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DESCRIPTION JP2004064726

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DESCRIPTION JP2004064726
The present invention relates to the improvement of a thin flat speaker, and provides an
inexpensive and robust thin flat speaker. SOLUTION: Aluminum and low-foam polyethylene
having a total thickness of 1.5 mm to 6.0 mm, in which closed-cell low-foam polyethylene is used
as a core 111, and aluminum facings 112 and 113 are joined to the front and back of the core
111 An inexpensive, robust thin flat speaker apparatus in which a vibration applying unit 120
for applying vibration according to an acoustoelectric signal to the diaphragm 110 is fixed to
either of the front and back of the diaphragm 110. It is. [Selected figure] Figure 1
Thin flat speaker device
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the
improvement of a thin flat speaker, and more particularly to an inexpensive and robust thin flat
speaker and various applications using the same. [0002] The following is a prior art of a
diaphragm used for a thin flat speaker. First, Japanese Patent Application Laid-Open No. 200244782 "diaphragm for electro-acoustic transducer" can be mentioned. The publication discloses
that a diaphragm of a foam structure is obtained by laminating a low density polyethylene sheet,
a paper material, and a high density polyethylene sheet, and using moisture in the paper material
to foam the low density polyethylene sheet. . However, in the diaphragm disclosed herein, the
core material is a paper material, and a layer obtained by foaming a low density polyethylene
sheet on the front and back and a high density polyethylene sheet are used. In addition, the
rigidity is relatively low and the mechanical strength is low. Subsequently, Japanese Patent
Application Laid-Open No. 2001-313993 "diaphragm of thin flat plate speaker" can be
mentioned. In this publication, the diaphragm is prevented from being damaged via the hot-melt
films on the upper and lower sides (front and back) of the reinforcing material having rigidity
including glass fibers on the upper and lower sides (front and back) of the core material of the
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foamed polyurethane layer Thickness provided with a highly adhesive surface material (due to
the need to protect the surface of the diaphragm as a surface material) such as polyester nonwoven fabric or aluminum (due to the need to bond the transducer or drive). A laminate of 0 mm
to 3.0 mm is disclosed. However, the diaphragm disclosed herein has many components and is
expensive. On the other hand, some conventional examples related to thin flat speaker
applications can be mentioned. Specifically, the followings are known as providing a decorative
sheet on the surface of a thin flat type speaker or using a diaphragm for a decorative sheet or the
like. {Circle over (1)} JP-A-2000-125390 "Panel-type speaker" In this publication, the diaphragm
is made of expanded polystyrene and has a thickness of about 5.0 mm, and a speaker in which a
decorative sheet is attached in front of the diaphragm. Has been proposed. However, in the case
of this panel type speaker, the decorative sheet provided in front of the diaphragm is in contact
with air, and the decorative sheet vibrates the air and overlaps with the sound from the
diaphragm to be used for decoration There is also a fear that a sound may be generated from the
sheet, and the vibration of the diaphragm may be attenuated by the front decorative sheet.
That is, it is conceivable that the acoustic characteristics of the diaphragm are reduced, and the
application is limited. In addition, when the diaphragm is opaque and it is used for a billboard
such as an advertisement requiring illumination because it has a decorative sheet on the front
surface, any of the upper, lower, left, or right sides of the decorative sheet Lighting must be
provided on the side to illuminate, and even if thin flat speakers are used, protrusions are
produced, and their use is limited. {Circle over (2)} JP-A-2002-27588 "Panel-type speaker
system" In this publication, a pair of flat diaphragms disposed opposite to each other in the front
and back direction, and a single sheet interposed between the diaphragms or A speaker provided
with a plurality of exciters has been proposed, and a configuration in which the surface of the
diaphragm is an advertising billboard, a projection surface, or a white board is disclosed. (3)
Japanese Patent Application Laid-Open No. 2001-359188 "Drive unit and panel speaker
including the same" In this publication, a voice coil, a drive unit for applying vibration having a
magnetic gap, and vibration caused by this drive unit A plate is disclosed, and vibration is made
of a film-like surface vibration member made of a material having high hardness and impact
resistance such as carbon and Kepler, and a honeycomb core material having a honeycomb layer
and a foam layer. A board is disclosed. However, in the applications described in the documents
(2) and (3), the diaphragm is opaque, and in the case of an application requiring illumination as
in the configuration described in the document (1), It has the same disadvantage. In addition,
since carbon, Kepler or honeycomb is used for the diaphragm, it has a drawback that it has many
components, is made of an expensive material, and is expensive. Further, as a diaphragm made of
transparent resin and a decorative sheet or display disposed on the back surface of the
diaphragm so that the decorative sheet or display can be seen through the diaphragm of
transparent resin, JP 2001 The 'audio transducer and audio visual device' is known. However, in
the prior art described in such publication, it is necessary to apply a conductive coating to a
transparent polyester film that vibrates air using a transparent working diaphragm and a
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transparent stator. Moreover, this film is difficult to process and assemble, for example, it is
mounted while being pulled so as to leave a residual tension on the film. Furthermore, since a
protective member such as a metal grit to protect the film from mechanical damage must be
provided so as to be transparent and passable through sound waves, there is a disadvantage that
the structural member is complicated and complicated.
On the other hand, Japanese Patent Application Laid-Open No. 11-331965 entitled
“Information processing device and speaker unit applicable to the device” is known as a device
in which a part of the casing of the device is a speaker. In this speaker unit, the vibration area of
the housing is formed thinner than the other areas. However, since a part is formed thin, only a
diaphragm with a small sound emission surface can be obtained. In addition, depending on the
material of the housing, it may not be possible to obtain good acoustic characteristics.
Furthermore, since it is necessary to make a part thinner, it is necessary to carry out injection
molding or blow molding using resin, so it is difficult to simultaneously achieve both moldability
and acoustic characteristics, and it is feared that the material is not suitable for diaphragms.
There is also. Further, as a speaker by vibrating a structural member such as a ceiling, a wall
panel or the like, Japanese Patent Application Laid-Open No. 2001-157642 "Sound reproduction
device for bathroom" is known. In this bathroom sound reproducing apparatus, an alternating
current signal is supplied to the voice coil unit, and the magnet and the outer pole vibrate with
the magnetic flux induced by the voice coil unit, and this vibration is transmitted to the base and
the frame through the suspension. It is transmitted and vibrates structural members of synthetic
resin, such as ceilings, wall panels and aprons of bathtubs. However, similar to the one described
in the above-mentioned JP-A-2000-125390, a structural member of a synthetic resin such as a
ceiling, a wall panel or an apron of a bathtub in front of a frame generating vibration is in contact
with air, Since this structural member functions as a vibrating plate that vibrates air and emits
sound, there is a fear that the vibration of the base or the frame will be attenuated by the
structural member of this synthetic resin, and the material of this structural member is in
consideration of moldability. There is also a possibility that it is impossible to obtain good
acoustic characteristics because the material is limited. An object of the present invention is to
provide an inexpensive and robust thin flat speaker capable of solving all the problems described
above and various applications using the same. SUMMARY OF THE INVENTION In order to solve
the above problems, a thin flat speaker device according to the present invention uses low-foam
polyethylene of closed cells as a core material, and the front and back of the core material is
made of aluminum. A laminated composite plate of aluminum and low-foamed polyethylene with
a total thickness of 1.5 mm to 6.0 mm, in which face materials are joined, is used as a diaphragm,
and either front or back of the diaphragm according to the acoustoelectric signal. It is
characterized in that a vibration applying portion for giving vibration is fixed.
The front and back of the diaphragm is aluminum, and the core material is low-foamed
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polyethylene with closed cells, there are no through holes in the front and back direction, it is
smooth and aesthetic, it prevents deterioration of performance and has high rigidity. Good sex. In
addition, the core material is low-foamed polyethylene with closed cells, has low density and low
density, has independent air holes, is lightweight and has high rigidity, and suppresses the
corrugation of aluminum on the front and back and has a flat and smooth surface. It is formed.
As a result, the diaphragm as a whole is a low density, light weight, bent, highly rigid structure
having mechanical properties such as no through holes in the front and back direction, and thus
a high performance thin flat speaker device Become. In addition, since aluminum and low-foam
polyethylene are used for the diaphragm, a material can be easily obtained, and an inexpensive
thin flat speaker device can be obtained. In the thin flat speaker device according to claim 2 of
the present invention, the low foam polyethylene of the closed cell is used as the core material,
and the face material of stainless steel is joined to the front and back of the core material, the
total thickness is 1 2) A laminated composite plate of 2 mm to 4.0 mm stainless steel and low
foaming polyethylene was used as a diaphragm, and a vibration applying portion was fixed to
either the front or back of the diaphragm to give vibration to the diaphragm according to the
acoustoelectric signal It is characterized by As in the thin flat speaker device according to claim
1, the thin flat speaker device is a high performance thin flat speaker device, and the material is
easily obtained, and the thin flat speaker device is inexpensive and has high rigidity and is robust.
According to a third aspect of the present invention, there is provided a bulletin board
comprising: a back plate; a bulletin board disposed opposite to the back plate at a predetermined
distance and having translucency; and between the back plate and the bulletin board The back
plate is a thin flat speaker device according to claim 1 or 2. In such a bulletin board, the
aluminum facing of the diaphragm or the stainless steel facing faces the lighting means side, so
the light of the lighting means is reflected by the aluminum facing or stainless steel facing Flat
and even reflected indirect light from a light-transmitting notice board illuminates the display to
make the viewer look beautiful, and since the lighting means is built in, the lighting means is not
provided outside the notice board. It has a good appearance with no projections on the outside
and is easy to handle. Moreover, since the diaphragm of the thin flat speaker device according to
claim 1 or 2 is used for the back plate, the sound is emitted from the back surface of the bulletin
board, and a notice is provided in front of the sound emitting surface of the diaphragm. Because
there is no sound can be generated.
Further, as in the thin flat speaker device according to claim 1 or 2, the material can be easily
obtained, and the board becomes inexpensive, high in rigidity and robust. Moreover, it has the
structure that the through-hole in front and back direction does not have the front and back of a
diaphragm. Therefore, when air movement occurs due to temperature differences between the
inside and outside of the speaker device provided on the display panel etc., dust and dirt will
accumulate in the through holes like the conventional diaphragm and cause contamination.
prevent. A case according to claim 4 of the present invention is a case having a handle in one
part and capable of carrying stored goods, wherein at least a part of the case is thin according to
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claim 1 or 2 It is characterized by being composed of a flat speaker device. Similar to the thin flat
speaker device and the bulletin board described in the above-mentioned claims, the material is
easily obtained, and the case is inexpensive, has high rigidity and is robust. In addition, the
diaphragm can be used also as the outer plate and the inner bottom plate of the case, which
makes the case strong and good sound. The free-standing flat speaker device according to claim
5 of the present invention is mounted directly on the thin flat speaker device according to claim
1 or 2 and around the diaphragm of the thin flat speaker device. And a supporting base
connected to a part of the frame. Similar to the thin flat speaker device, the bulletin board, and
the case described in the above-mentioned claims, the material is easily obtained, and the low
cost, high rigidity and high rigidity self supporting flat speaker device can be obtained. In
addition, the frame covers the periphery of the diaphragm and looks good. In the free-standing
flat speaker device according to claim 6 of the present invention, the thin flat speaker device
according to claim 1 or 2 and an elastic body around the diaphragm of the thin flat speaker
device It is characterized in that a frame indirectly attached via the frame and a support
connected to a part of the frame are provided. As in the case of the freestanding flat speaker
device according to claim 5, the free standing flat speaker device is obtained which is easily
obtained, inexpensive, has high rigidity, and is robust. In addition, the frame covers the periphery
of the diaphragm and looks good. A display device according to claim 7 of the present invention
is a thin flat speaker device according to claim 1 or 2, a display main body, and a part of the
periphery of a diaphragm of the thin flat speaker device. And a frame for directly fixing the
remaining portion around the diaphragm of the thin flat speaker apparatus.
Similar to the thin flat speaker device, the bulletin board, the case, and the free-standing flat
speaker device described in the above-mentioned claims, the material can be easily obtained and
the display device becomes inexpensive and has high rigidity and is robust. In addition, the frame
covers the periphery of the diaphragm and looks good. A display device according to claim 8 of
the present invention is a thin flat speaker device according to claim 1 or 2, a display main body,
and a part of a periphery of a diaphragm of the thin flat speaker device. And a frame for fixing
the remaining portion around the diaphragm of the thin flat speaker apparatus via the elastic
body. As in the case of the self-supporting flat speaker device according to claim 7, the display
device can be obtained inexpensively, has high rigidity and is robust. In addition, the frame
covers the periphery of the diaphragm and looks good. The wall-mounted flat speaker device
according to claim 9 of the present invention is the thin flat speaker device according to claim 1
or claim 2 and is directly attached around the diaphragm of the thin flat speaker device. And a
holding portion holding the end of the diaphragm of the thin flat speaker device, and a wall
mounting extension portion extending from the holding portion. Similar to the thin flat speaker
device, the bulletin board, the case, the freestanding flat speaker device, and the display device
according to the above-mentioned claims, a wall mount type flat speaker device having low cost,
high rigidity and high rigidity which is easily obtained. It becomes. In addition, the frame covers
the periphery of the diaphragm and looks good. Furthermore, the thin flat speaker device can be
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easily attached to the wall through the frame. A wall-mounted flat speaker device according to
claim 10 of the present invention is the thin flat speaker device according to claim 1 or 2, and an
elastic body around the diaphragm of the thin flat speaker device. And a frame attached
indirectly via the frame, the frame having a sandwiching part sandwiching the end of the
diaphragm of the thin flat speaker device, and a wall mounting extension part extended from the
sandwiching part It is characterized by Similar to the wall-mounted flat speaker device according
to claim 9, the material is easily obtained, and the wall-mounted flat speaker device becomes
inexpensive and has high rigidity and is robust.
In addition, the frame covers the periphery of the diaphragm and looks good. Furthermore, the
thin flat speaker device can be easily attached to the wall through the frame. Further, in the case
according to claim 11 of the present invention, in a case having a handle in part and capable of
carrying stored goods, it is transparent to pass sound waves through at least a part of the outer
plate of the lid of the case. A thin flat speaker device according to claim 1 or claim 2 is provided
facing the through hole, and the support substrate to which the thin speaker device is attached is
detachably attached to the inside of the case. It is characterized by The speaker device portion
can be a thin speaker which is easily obtained at low cost, is high in rigidity, and is robust.
Further, since the speaker device portion is provided inside the case and emits a sound wave to
the outside through the through hole opened in the case outer plate, the speaker device portion
can be protected. Further, since the speaker device portion can be detached along with the
support substrate to which it is attached, when not used as a speaker, the speaker device portion
and the support substrate are removed to expand the storage portion as a case and reduce
weight be able to. BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the
present invention will be described below based on the drawings. In the following drawings,
hatching is appropriately omitted to facilitate the description. First, the thin flat speaker device 1
according to the first embodiment will be described. In the thin flat speaker device 1 according to
the first embodiment shown in FIG. 1, the low foam polyethylene of the closed cell is used as the
core material 111, and the smooth and thin plate-like surface of aluminum on the front and back
of the core material 111. A laminated composite plate of aluminum and closed-cell low-foam
polyethylene having a total thickness of 1.5 mm to 6.0 mm of a sandwich-like structure in which
the materials 112 and 113 are bonded (bonded) with an adhesive is used as a diaphragm 110.
The vibration applying unit 120 which vibrates the vibration plate 110 according to the
acoustoelectric signal is directly fixed to one side of the plate 110 by bonding with an adhesive
material such as a double-sided adhesive tape. As for the diaphragm 110, as shown in FIG. 2,
adhesion is made of aluminum, polyethylene, aluminum and resin laminated composite plate of
light aluminum (registered trademark) from one side made by Sankyo Yunite Industrial Co., Ltd.
And a total thickness of 1.5 mm, 2.0 mm, 3.0 mm, 4.0 mm or 6.0 mm including aluminum,
polyethylene and aluminum.
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This Litnium (registered trademark) uses low-foamed polyethylene having closed cell holes as a
core material 111, and the front and back of the core material 111 is sandwiched between the
surface materials 112 and 113 of aluminum thin metal sheets maintaining high strength. It has
high rigidity by becoming a sandwich structure (laminated composite structure) bonded by
Reference numerals 116 and 117 shown in FIG. 2 denote bonding layers for bonding the core
material 111 and the aluminum surface materials 112 and 113 on the front and back sides. In
addition, low foaming polyethylene having closed cell holes is used for the core material 111,
which is lightweight. (As a specific example, specific gravity is 0.80 to 1.30 as described later.
Also, the sandwich structure in which closed cell low expansion polyethylene is used as the core
material 111 and the front and back are sandwiched between the surface materials 112 and 113
of the aluminum thin metal plate is bonded to suppress the corrugation that tends to occur in the
metal thin plate. The polyethylene of 111 gives a flat and smooth (smoothed) surface due to low
foaming and closed cell. The aluminum facings 112 and 113 on the front and back sides may be
coated for aesthetics and reflection adjustment, or may be anodized as they are. In FIG. 2, the
surfaces of the surface materials 112 and 113 of each aluminum on the front and back are
further coated, and the coating layers 114 and 115 are formed. The relationships among the
total thickness, aluminum thickness, and specific gravity of Lightnium (registered trademark) are
as follows. Further, for driving the diaphragm 110 and the diaphragm 110 of the thin flat
speaker device 1 according to the first embodiment of the present invention. The vibration
applying unit 120 to be used applies a known technique, and, for example, Japanese Patent
Application Laid-Open No. 2001-359188 "Drive unit and panel speaker including the same",
Japanese Patent Application Laid-open No. 2002-27588 "Panel type speaker As in the case of the
panel type speaker device described in “System” or JP-A-11-220785 “Panel type speaker
device”, the diaphragm 110 is provided by the driver unit corresponding to the vibration
applying unit 120 according to the first embodiment of the present invention. The basic
configuration is a panel-type speaker device based on the bending wave theory that drives an
output to perform output reproduction.
Specifically, the technology of the panel speaker of the NXT (registered trademark) DM
(Distributed Mode) system of New Transducer Ltd. in the United Kingdom is applied. By using
this, a bi-directional, flat frequency characteristic is realized in the middle and high regions, and a
large radiation area can be obtained because fine divided vibration occurs in the diaphragm, and
the sound pressure is obtained even if it is separated from the diaphragm The level is maintained
and sufficient energy can be obtained. That is, the driver unit corresponding to the vibration
applying unit 120 causes the diaphragm 110 to generate a partial bending operation due to the
vibration and the sound is emitted. Here, the diaphragm 110 which is vibrated by the known
driver unit is capable of reproducing and outputting good sound quality even in a low frequency
band since the outer peripheral portion freely vibrates in an unconstrained state. However, a thin
flat speaker device used for a display plate to be described later of the present invention, a free
standing thin flat speaker device enabling the speaker itself to stand and stand, a thin flat
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speaker device attached to a display device, and a wall surface In the thin flat speaker device
used for the purpose, it is preferable to attach the diaphragm (sound emitting surface) 110 for
supporting, fixing, or for the purpose of concealing the peripheral cut surface in terms of
aesthetic appearance. It is necessary to provide a frame around the sound surface 110, but if the
diaphragm (sound emitting surface) 110 is large, the diaphragm (sound emitting surface) can
sufficiently allow partial bending operation by the vibration. ) Even if the periphery of the portion
110 is fixed to a frame, reproduction and output with good sound quality can be performed.
When the diaphragm (sound emitting surface) 110 is small, an elastic body is interposed
between the periphery of the diaphragm 110 and the frame to support the partial bending
operation due to the vibration so as not to be killed. It is designed to be able to reproduce and
output good sound quality. Subsequently, a specific configuration of the above-described
vibration applying unit 120 will be described. As shown in FIG. 1, the vibration applying unit 120
includes a bobbin 121 fixedly adhered (adhered) to the diaphragm 110, a voice coil 122 wound
around the bobbin 121, and a magnetic gap 123 into which the voice coil 122 is inserted. The
housing 125 is fixed (adhered) to the diaphragm 110 through the plate spring 124, the
permanent magnet 126 fixed to the bottom plate 125a of the housing 125, and the iron plate
127 fixed to the permanent magnet 126. .
A magnetic gap 123 is formed in the permanent magnet 126 and the iron plate 127. Further,
reference numeral 128 denotes a damper, which is swingably connected between the bobbin
121 and the iron plate 127. 129 is a jack to which a connection cord from an external audio
device such as a CD or MD (not shown) or an amplifier can be connected, and 129a is a lead wire
wired between the jack 129 and the voice coil 122 is there. With the above configuration, by
applying an electrical acoustic signal to the voice coil 122, the bobbin 121 on which the voice
coil 122 is wound vibrates according to the acoustoelectric signal, and is bonded and fixed to the
bobbin 121. The vibrating diaphragm 110 vibrates and is emitted as sound and becomes a
speaker. At that time, the mounting flange 125 b of the housing 125 and the diaphragm 110 are
fixed by adhesion through the plate spring 124, whereby the vibration applying unit 120 is
supported by the diaphragm 110, and the plate The spring 124 is provided with a slit 124 a, and
a gap 125 c is secured between the diaphragm 110 and the mounting flange 125 b of the
housing 125 so that the vibration of the diaphragm 110 is permitted by the deformation of the
leaf spring 124. It has become. In place of the plate spring 124, the diaphragm 110 and the
mounting flange 125b of the housing 125 may be attached via an elastic body made of foam
rubber. As is clear from the above configuration, the thin flat speaker device 1 according to the
first embodiment has aluminum on the front and back of the diaphragm 110, so even if low-foam
polyethylene of closed cells is used for the core material 111 There is no through hole in the
front and back direction, it is smooth and excellent in appearance, and the independent air
bubble hole of the core material 111 is not clogged with dust or the like in the air to block or
stain the independent air bubble hole. Can provide a speaker that does not need to be decorated
on the speaker surface, and has high rigidity and good adhesion, and can be firmly attached and
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attached to the vibration applying unit 120, and when the diaphragm 110 is attached to another
member Alternatively, when attaching another member such as a frame to the diaphragm 110, it
can be easily attached by adhesion, and a speaker easy to attach can be provided. In addition,
since the core material 111 is low-foamed polyethylene with closed cells, it has independent cell
holes, is low density and sparse, is lightweight, has high rigidity, and suppresses waving of
aluminum on the front and back and is flat and smooth Form a smooth surface.
Therefore, the diaphragm 110 as a whole is a structure having a low density, light weight, high
bending and rigidity, and mechanical properties such as no through holes in the front and back
direction, thereby providing high performance. In addition, since a laminated composite plate of
aluminum and low-foam polyethylene is used for the diaphragm 110, the outer wall, inner wall,
ceiling partition, door or sign of a building, cold storage room of a lorry car, gate, wing It is a
material that is wide and is widely used, and the material can be easily obtained and is
inexpensive. Subsequently, a thin flat speaker device 2 according to a second embodiment of the
present invention will be described. As shown in FIG. 3, the thin flat speaker apparatus 2
according to the second embodiment has a low foam polyethylene of a closed cell as a core
material 211, and on the front and back of the core material 211, smooth and extremely thin
stainless steel. Diaphragm 210 is a laminated composite plate of stainless steel and closed-cell
low-foamed polyethylene, having a total thickness of 1.2 mm to 4.0 mm in a sandwich structure
in which plate-like face materials 212 and 213 are bonded (bonded) with an adhesive. The
vibration applying unit 220 which vibrates the vibration plate 210 according to the
acoustoelectric signal is directly adhered to one side of the vibration plate 210 by an adhesive
such as double-sided adhesive tape. There is. As for the diaphragm 210, as shown in FIG. 4,
stainless steel, polyethylene, stainless steel, stainless steel and resin laminated composite plate,
Suslight (registered trademark), from one side made by Sankyo Yunite Industries, Ltd. A total
thickness of 1.2 mm, 1.5 mm, 2.0 mm, 3.0 mm, and 4.0 mm including an adhesive and stainless
steel, polyethylene, and stainless steel is used. This Suslight (registered trademark) uses lowfoamed polyethylene having closed cell holes as a core material 211, and the front and back of
the core material 211 is a surface material 212, 213 of a stainless steel thin metal plate which
maintains high strength. By providing a sandwich structure (laminated composite structure)
which is sandwiched and bonded, high rigidity is obtained. Reference numerals 214 and 215
shown in FIG. 4 denote adhesive layers which bond the core 211 and stainless steel facings 212
and 213 on the front and back sides. In addition, low foaming polyethylene having closed cell
holes is used for the core material 211, which is lightweight. (Specific examples will be specific
gravity 1.03 to 1.95 as described later. In addition, the sandwich structure in which closed cell
low expansion polyethylene is used as core material 211 and the front and back are sandwiched
between the surface materials 212 and 213 of stainless steel thin metal plates is bonded, thereby
suppressing waviness that tends to occur in the thin metal sheets. The polyethylene of material
211 provides a flat and smooth (smoothed) surface due to low foaming and closed cell.
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Since the front and back are stainless steel facings 212 and 213 with excellent corrosion
resistance, they may be used as they are, but the surface may be coated for aesthetics and
reflection adjustment. In FIG. 4, the thing which has not painted on the surface is shown. In
addition, it is as follows when the relationship about the total thickness and specific gravity
regarding Susulight (trademark) is illustrated. <Img class = "EMIRef" id = "197790513-00004" />
The diaphragm 210 of the thin flat speaker device 2 according to the second embodiment of the
present invention Similar to the diaphragm 110 of the thin flat speaker apparatus 1 according to
one embodiment, a panel type speaker apparatus that performs output reproduction based on a
known bending wave theory is basically configured. On the other hand, the vibration applying
portion 220 of the thin flat speaker device 2 according to the second embodiment of the present
invention also uses a known drive device (driver unit). Specifically, the vibration applying unit
220 according to the second embodiment of the present invention is disclosed in Japanese
Patent Application Laid-Open No. 2000-253492 “Speaker Using Piezoelectric Vibrator”,
Japanese Patent Application Laid-Open No. 2001-320798 “Acoustic Similar to the speaker
described in the "piezoelectric diaphragm for device", a known driver unit using the phenomenon
of the piezoelectric effect is used. The vibration applying unit 220 according to the second
embodiment of the present invention is a vibration applying unit utilizing the phenomenon of the
piezoelectric effect, and uses two ceramics. The two ceramics have the property of piezoelectric
effect. Note that this is called a piezoelectric ceramic, and a substance having a piezoelectric
effect is called a piezoelectric body. The piezoelectric body generates force and strain (elongation
and contraction) when electricity is applied to its crystal. That is, it has an inverse piezoelectric
effect. Then, the acoustoelectric signal output from the output terminal of the CD player, MD
player or the like is amplified by the amplifier and applied to the piezoelectric ceramic, whereby
the piezoelectric body repeats expansion and contraction according to the acoustoelectric signal.
Note that the specific structure of the vibration applying unit 220 is a structure in which the
brass electrode plate 223 is bonded so as to be sandwiched between two ceramics 221 and 222
which are piezoelectric bodies. The two ceramics 221 and 222 are wired so that the polarities
are opposite (if one extends, the other shrinks), and the brass electrode plate 223 is deformed
into an arc according to the magnitude of the acoustoelectric signal. , The whole vibrates.
Then, this vibration is transmitted to the diaphragm 210 and emitted as a sound to be a speaker.
Reference numeral 224 denotes a vibration transmitting unit of the vibration applying unit 220
for supporting and fixing the vibration applying unit 220 to the vibrating plate 210 and bonding
and fixing the vibration applying unit 220 to the vibrating plate 210 to transmit the vibration.
Further, 225 is a damper weight of a weight bonded and fixed to the outer periphery of the brass
electrode plate 223 in order to amplify and adjust the vibration. Reference numeral 231 denotes
a plug connected to an amplifier (not shown), and reference numeral 232 denotes a wire
connecting the plug 231, the ceramics 221 and 222, and the brass electrode plate 223. It should
be noted that, unlike the above-described embodiment, the diaphragm 110 of the first
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embodiment may be provided with the vibration applying unit 220 of the second embodiment,
which may be a thin flat speaker device. The thin flat speaker device may be provided with the
vibration applying unit 120 according to the first embodiment. Next, a bulletin board 3 according
to a third embodiment of the present invention will be described. This bulletin board 3 is
provided with the diaphragm 110 or 210 used in the first embodiment or the second
embodiment on the back side of the notice. Specifically, as shown in FIG. 5, a diaphragm (back
plate) 110 of the thin flat speaker device 1 and a diaphragm disposed opposite to the diaphragm
110 at a predetermined distance and having translucency It comprises a section 310, a
fluorescent lamp 320 interposed between the diaphragm 110 and the display section 310, and a
frame 330 for fixing these. The diaphragm 110 has the same structure as the diaphragm 110
used in the thin flat speaker device 1 according to the first embodiment, that is, the core material
111 of low-foam polyethylene made of closed cells is sandwiched between the aluminum surface
materials 112 and 113. It has a sandwich structure. The vibration applying unit 120 of the thin
flat speaker device 1 according to the first embodiment is bonded and fixed at a position slightly
offset from the center of the diaphragm 110, and the acoustic amplifier 130 and the fluorescent
lamp 320 are positioned at appropriate positions of the diaphragm 110. A noise canceller 322 is
mounted to take the noise of. The wiring in the bulletin board 3 and jacks connected to external
sound equipment are not shown. As shown in FIG. 6, the display unit 310 includes a light
transmission type display panel 313 made of a photo and the like, and a support panel 311 made
of a transparent acrylic plate for protection of the display panel sandwiching the display panel
313 in a sandwich. , 312.
In addition, a translucent light reflecting acrylic plate 321 for light diffusion is interposed
between the display unit 310 and the fluorescent lamp 320. As shown in FIGS. 7 and 8, these
components are formed around the bulletin board from a self-support frame 331 and a U-shaped
cover frame 332, and the cross section as a whole is It is fixed while maintaining a
predetermined relative positional relationship by a frame 330 formed in an E shape. The support
frame 331 has the entire periphery of the bulletin board, ie, four sides formed in a self-shaped
cross section, and the cover frame 332 inserted and fixed to the support frame 331 has three
sides of the bulletin board formed in a U-shaped cross section. The other side is formed to have a
cross-sectional shape I only with the front edge plate 335, and the side edge 335a of the side is
formed in an open shape. A U-shaped cover frame insertion groove 313 b formed by the front
end 313 a of the self-shaped cross section self-shaped support frame 313 is a folded rear edge of
the U-shaped cover frame 332. The portion 332a is inserted and fixed, the width of the cover
frame insertion groove 332b and the thickness of the rear edge portion 332a are formed to be
substantially the same, and the rear edge portion 332a is press-fit into the cover frame insertion
groove 332b. The support panel 311, the display panel 313, and the support panel 312 are
inserted and fixed in a display panel insertion groove 332c formed by the cover frame 332
having a U-shaped cross section and the support frame 331 having a self-shaped cross section.
Furthermore, as shown in FIG. 8, a lid 334 which can be opened and closed via a hinge 333
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attached to the frame 330 is provided on the remaining side around the bulletin board. The lid
334 is always urged in the closing direction by the spring 333 a provided on the hinge 333 and
is opened only when the display panel 313 is replaced. The display panel 313 can be inserted
into the bulletin board 3 by slidingly inserting the support panels 311 and 312 holding the
display panel 313 in the display panel insertion groove 332c appearing with the lid 334 open.
The assembling method will be described in more detail. As shown in FIGS. 6, 7 and 8, the rear
end portion 332 a of the cover frame 332 is inserted into the cover frame insertion groove 332 b
of the support frame 331. At this time, the open side edge portion 335a of the cover frame 332
is inserted (pressed in) from the side opposite to the lid 334 of the support frame 331 and
attached. Then, as shown in FIG. 8, the lid 334 attached to the side of the support frame 331 via
the hinge 333 is opened against the spring force (biasing force acting in the direction to close the
lid) to open the lid The light transmitting type display panel 313 inserted into the support panels
311 and 312 of the acrylic plate is inserted from the side of the side 334.
When the size of the display panel 313 is relatively large (for example, A1 or A0) of A4 size or
more, the diaphragm 110 is directly fixed to the frame 330 with an adhesive (agent), a screw, a
rivet, or the like. Enough sound pressure can be obtained. On the other hand, when the size of the
display panel 313 is smaller than the A5 version such as the B5 version or the A5 version, the
periphery of the diaphragm 110 is attached by attaching it via the elastic body between the
diaphragm 110 and the frame 330. Not to solidify. The rigidity of the diaphragm 110 is
necessary, but if the rigidity is made higher than necessary, the vibration is suppressed.
Therefore, when the diaphragm 110 is small, the rigidity is made higher than necessary by fixing
directly to the frame 330. To prevent it. Although the insertion openings of the support panels
311 and 312 and the display panel 313 may be the upper part or the lower part, in the case of
the lower part, an engaging tool for engaging and holding the lid is provided. With the above
configuration, the aluminum plate material 113 of the fluorescent lamp 320 is formed on the
bulletin board 3 because the aluminum plate material 113 of the diaphragm 110 faces the
fluorescent lamp 320 side. Since the semitransparent light reflecting acrylic plate 321 for light
diffusion is provided in front of the fluorescent lamp 320 to reflect light, flat and uniform
indirect light is irradiated on the entire display unit 310, and the rear surface of the display unit
310 Since the display panel 313 such as a photograph of the display section 310 is entirely
raised by the indirect light transmitted from the display section 310, the viewer can be made to
have a beautiful appearance. Moreover, since there are no protrusions such as illumination lights
outside the bulletin board 3, the appearance is simple and the handleability is excellent.
Furthermore, since the diaphragm 110 of the thin flat speaker device 1 according to the first
embodiment of the present invention is used as the back plate of the bulletin board 3, the sound
is emitted from the back of the bulletin board 3 and the sound of the diaphragm 110 is released.
Since there is no display panel 313 on the sound surface, a good sound can be generated, and the
advertising effect can be enhanced. Moreover, since the thin flat speaker device 1 according to
the first embodiment of the present invention is lightweight and strong and has excellent dust
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resistance, the bulletin board 3 using such thin flat speaker device 1 as a back plate is required
to have weather resistance. It is excellent for use in an outdoor environment, is suitable for
portability, and can be easily transported and installed in a desired location. It should be noted
that, unlike the above embodiment, even if the thin flat speaker device 2 according to the second
embodiment is used for the back plate, the same effect can be expected.
Subsequently, the case 4 according to the fourth embodiment of the present invention will be
described. This case 4 utilizes the thin flat speaker device 1 according to the first embodiment for
at least a part of the case 4 made of aluminum. That is, the case 4 may be a thin flat speaker
device that is a part of an aluminum case or a trunk used to store and carry a notebook personal
computer, a notebook personal computer such as an AC adapter, or a set of esthetic tools. It is
composed of 1. Specifically, as shown in FIG. 9, the case 4 includes a case main body 410, a lid
420, hinges 430 (FIG. 10) for connecting these so as to be able to open and close, and the case
main body 410 , And a hook 450 for locking the lid 420 to the case main body 410, and the
front plate 423a of the outer plate 423 of the lid 420 according to the first embodiment The
diaphragm 110 of the thin flat speaker device 1 is configured. The side plate 423 b of the outer
plate 423 of the lid 420 is formed by bending and extending the front plate 423 a formed of the
diaphragm 110. An acoustic amplifier 130 is attached to the inside of the front plate 423 a of the
lid 420 formed of the diaphragm 110 of the thin flat speaker device 1. Reference numeral 120 is
a vibration applying portion, 424 is an edge reinforcing frame for reinforcing the edges of the
outer plates 423, 425, and 426 is a corner reinforcing piece for reinforcing the corners of the
outer plates 423, 425. Then, as shown in FIG. 10, a lid inner bottom plate 421 is provided inside
the lid 420 (shown by a two-dot chain line in the drawing). In addition, a lid internal space 427 in
which the acoustic amplifier 130 and the vibration applying unit 120 are accommodated exists
between the outer plate 423 formed of the diaphragm 110 and the lid inner bottom plate 421. In
addition, urethane 422 for protecting the stored items is attached to the peripheral wall inside
the lid inner bottom plate 421, and formed on the inner side of the case main body 410
according to the outer shape of the stored items as shown in FIG. Urethane 412 in which a
storage recess 412a for protecting stored items is formed is inserted. In FIG. 11, the edge
reinforcing frame 424 of the outer plates 423 and 425, the corner reinforcing piece 426, and the
hooking tool 450 are not shown. Further, the case 4 and the outer plate 423 of the lid 420 and
the outer plate 425 of the case main body 410 are also made of low-foam polyethylene of closed
cell similar to the diaphragm 110 of the thin flat speaker device 1 according to the first
embodiment. It is formed of a laminated composite plate of aluminum and low-foamed
polyethylene in which a core material and a face material of aluminum are joined to front and
back of the core material.
And it is set as the thin flat speaker apparatus concerning 1st Embodiment which made the front
plate 423a of the outer plate 423 of the lid 420 the diaphragm 110. FIG. Thus, at least a part of
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the case made of a laminated composite plate of aluminum and low-foam polyethylene is
constituted by the thin flat speaker device 1 of the first embodiment, and while the case with a
speaker is lightweight and strong and excellent in dust resistance. It can be used for advertising
in outdoor environments where weather resistance is required, is suitable for portability, and can
be brought to any place. Note that, as an example of the usage form, it is also conceivable to play
music and voice from the personal computer storage case in response to an audio signal from the
personal computer. Alternatively, at the time of a demonstration of beauty treatment or make-up,
a voice reproduction device for storing a comment or advertisement and an beauty treatment
tool storage case storing the beauty treatment tool may be connected, and a sound for
advertisement may be made to flow. When the front plate 423a of the outer plate 423 of the lid
420 is used as the diaphragm 110, it may be used as a speaker with the lid 420 of the case
closed, or may be used as a speaker with the lid open. good. Further, as shown by a two-dot chain
line in FIG. 10, the lid inner bottom plate 421 can also be used as the diaphragm 110. In this
case, the lid inner bottom plate 421 is configured of the diaphragm 110 of the thin speaker
device 1 according to the first embodiment, and the acoustic amplifier 130 is attached to the
outer plate 423 side of the lid inner bottom plate 421. In addition, what the code | symbol 120
shown with the dashed-two dotted line in FIG. 10 points out is a vibration provision part of the
thin speaker apparatus 1. As shown in FIG. When the lid inner bottom plate 421 is used as the
diaphragm 110, it is used as a speaker with the lid 420 of the case opened. The diaphragm 110
may be provided on both sides of the outer plate 423 and the lid inner bottom plate 421. In this
case, one of the vibration applying units 120 is attached to the diaphragm 110 forming the outer
plate 423, and the other is attached to the diaphragm 110 forming the lid inner bottom plate
421. Even in this case, by arranging the vibration applying unit 120 and the acoustic amplifier
130 at appropriate positions, mutual interference can be prevented. When the thin flat speaker
device 2 according to the second embodiment is used for the outer plate 423 or the lid inner
bottom plate 421 unlike the above-described embodiment, the above-described case is somewhat
reduced in terms of weight reduction. Although inferior, it can be an excellent case in terms of
strength.
In this case, the outer plate 423 is formed by the diaphragm 210, and the lid inner bottom plate
421 is formed by the diaphragm 210. Next, a description will be given of a self-supporting flat
speaker device 5 according to a fifth embodiment of the present invention. The free-standing flat
speaker device 5 is a thin flat speaker device placed on the floor or on a rack and on a tabletop.
The free-standing flat speaker device 5 includes, as shown in FIG. 12, the thin flat speaker device
1 of the first embodiment, a frame 510 directly attached around the thin flat speaker device 1,
and a lower portion of the frame 510. And a support 520 connected thereto. Further, as shown in
the cross-sectional view of FIG. 13, the support 520 is provided with an amplifier 530 and can be
connected to an external audio device 540 such as a CD or MD via the jack 531 and the
connection cord 541. Reference numeral 120 denotes a vibration applying unit, and reference
numeral 120 a denotes a wire connecting the vibration applying unit 120 and the amplifier 530.
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The size of the diaphragm 110 is a relatively large sound emitting surface (diaphragm) of A4 size
or more, for example, a size in which two A4 size and A4 size are continued in the longitudinal
direction, A3 size, As shown in the cross-sectional view of the frame of FIG. 14, in the case of the
A2 version, the A1 version, and the A0 version, the frame 510 is adhered or press-fitted and fixed
to the periphery of the diaphragm 110 . The frame 510 is formed by bonding and assembling in
a frame shape using an aluminum extruded material, but a resin may be used. In the case of a
sound emitting surface (diaphragm) having a size smaller than that of the A4 size or
longitudinally elongated or horizontally elongated, it is attached between the diaphragm 110 and
the frame 510 through an elastic body. (See the cross-sectional view of the frame of the other
embodiment shown in FIG. 18) On the other hand, in the case of long and thin elongated (for
example, two A5 plates in the longitudinal direction), the longitudinal end is the diaphragm 110
and the frame The 510 is fixed directly by bonding or the like, and the latitudinal end is attached
between the diaphragm 110 and the frame 510 via an elastic body. In the case of the selfsupporting flat speaker device according to the present embodiment, the support 520, the
diaphragm 110, and the frame 510 can be divided to make the package compact, the support
520 and the diaphragm 110, Between the frame 510 and the support connection member 521 is
provided. The lower portion of the frame 510, the support connection member 521, and the
support base 520 are provided with a concave portion and a convex portion, and by inserting
and fixing, they are detachable at this portion.
The height of the device from the floor or table may be made variable by changing the length of
the support connection member 521. Further, unlike the above embodiment, even if the frame
510 and the support 520 or the support connecting member 521 are attached to the thin flat
speaker device 2 according to the second embodiment, the same effect can be expected. Next, the
display device 6 according to the sixth embodiment of the present invention shown in FIG. 15
and the wall-mounted flat speaker device 7 according to the seventh embodiment will be
described. The display device 6 and the wall-mounted flat speaker device 7 are used in home
theaters and audio rooms. As the background, in home theaters, the demand for thin and flat
display devices such as plasma displays and liquid crystal displays is in full swing as a spacesaving video device, and the space is taken up by further multichanneling of surround sound. It
can be mentioned that a good speaker with no sound is required. In order to meet the demand,
the thin flat speaker device 1 according to the present invention is used to provide a display
device 6 integrally provided with a speaker unit on the display side and a wall mounted flat
speaker device 7 provided on a wall of a room I will provide a. First, the display device 6
according to the sixth embodiment, in which the thin flat speaker device 1 is provided on the thin
display, will be described. The display device 6 does not transmit the vibration of the frame 621
and the speaker formed on the both sides of the thin display 610 so as to fit on the display 610,
as shown in the cross sectional view of FIG. The thin flat speaker apparatus 1 of the first
embodiment is attached to the display 610 by attaching the diaphragm 110 of the thin flat
speaker apparatus 1 of the first embodiment via the elastic body 630 as described above. The
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frame 621 also serves as a terminal cover of the diaphragm 110. Further, as shown in the frame
cross-sectional views of FIGS. 16 and 17, the periphery of the diaphragm 110 of the thin flat
speaker device 1 other than corresponding to both side surfaces of the thin display 610 is
vibrated without using an elastic body. A frame 622 is fixed by bonding or press fitting around
the plate 110. The periphery of the diaphragm 110 of the thin flat speaker device 1 other than
that corresponding to both side surfaces of this thin display may also be fixed by the frame 624
via the elastic body 623 as shown in FIG. .
Reference numeral 120 denotes a vibration applying unit, reference numeral 640 denotes a
display support, and reference numeral 641 denotes a support leg. Further, unlike the above
embodiment, the thin flat speaker device 2 according to the second embodiment may be used as
the thin flat speaker device used for the display device 6. Subsequently, a wall mounted flat
speaker device (refer to FIG. 15 again) which can be mounted on a wall will be described. As
shown in the cross-sectional views of FIGS. 19 and 20, the wall-mounted flat speaker device 7
according to the present embodiment includes the thin flat speaker device 1 according to the
first embodiment and the vibration of the thin flat speaker device 1. The frame 710 includes a
frame 710 attached around the periphery of the plate 110. The frame 710 extends from the
sandwiching portion 711 and the sandwiching portion 711 sandwiching the end of the
diaphragm 110 of the thin flat speaker device 1 And a wall mounting extension 712 attached
thereto, and is formed in a U-shaped cross section. An elastic body 713 for absorbing vibration is
interposed between the sandwiching portion 711 and the diaphragm 110 of the thin flat speaker
device 1. The vibration absorbing elastic body 714 is also fixed to the wall attachment extension
712, and the thin flat speaker device 1 can be attached to the wall through the vibration
absorbing elastic bodies 713 and 714. . Reference numeral 120 denotes a vibration applying
unit. The thin and flat speaker device 1 is vibrated efficiently by these vibration absorbing elastic
bodies 713 and 714 so that good sound is emitted and excessive vibration is not transmitted to
the wall. The cross-sectional views of FIGS. 19 and 20 show an example provided on the wall 720
of the room having the acoustic characteristics (sound field) and the soundproof function.
Specifically, the thin flat speaker device 1 according to the first embodiment is applied to the
laminated wall 720 including the sound field panel 721, the sound insulation layer 722, the
vibration cut layer 723, the sound absorption layer 724, the vibration cut layer 725, and the
sound insulation layer 726. Attached. In addition, 730 is a recess provided in the wall 720 so
that the thin flat speaker device 1 does not protrude from the wall 720 of the room into the
room, and is fitted into the space of the recess 730 to be thin flat speaker device Attached.
Further, the wall mounted flat speaker device 7 according to the present embodiment is a recess
in which the thin flat speaker device 1 is provided on the wall 720 through the wall mounting
extension 712 of the frame 710 having a U-shaped cross section. Since 730 can also be fitted
into the space and attached so as not to protrude from the wall 720, it is excellent not only in
terms of acoustic characteristics but also in terms of aesthetics.
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Further, the frame 710 attached around the diaphragm 110 of the thin flat speaker device 1 has
a vibration absorbing elastic body 713 interposed between the sandwiching portion 711 of the
frame 710 and the periphery of the diaphragm 110. It may be fixed directly by adhesion or
press-fitting, without being carried out. Note that, unlike the above-described embodiment, a
wall-mounted flat speaker device in which the frame 710 is attached to the diaphragm 210 of the
thin flat speaker device 2 according to the second embodiment may be used. Next, a case 810
according to the eighth embodiment of the present invention will be described. 21, 22, and 23
correspond to the case 810 of the eighth embodiment in the drawings. The case 810 according
to the eighth embodiment of the present invention is the same as the case 4 according to the
fourth embodiment described above, but includes peripheral devices of a notebook computer
such as a notebook computer and an AC adapter, a set of beauty treatment tools, etc. In addition
to the case to carry and store, thin flat in the case to store and carry a complete set of equipment
for listening or playing music such as a CD player or music CD so that it is easy to listen to or
play music on the move destination if necessary The speaker device 1 is built in. The specific
structure of case 810 will be described below. In addition, the same thing as the structure of the
thin flat speaker apparatus 1 concerning 1st Embodiment attaches | subjects a same agreement,
and abbreviate | omits description. In the case 810, at least a part of the outer plate forming the
outer surface 811 of the case 810 made of aluminum or the like as shown in FIG. The thin flat
speaker device 1 (see FIG. 22) according to the first embodiment is provided facing the inside of
the through hole 812 in the open state. The thin flat speaker device 1 is detachably attached to
the case 810. In addition, as shown in FIGS. 21 and 22, the case 810 has a case main body 813, a
lid 814, a hinge 815 for connecting these in an openable / closable manner, and a pivoting shaft
pivotable to the case main body 813. A handle 817 fixed via 816 and a hook 818 for locking the
lid 814 to the case body 813 are provided. 【0129】 なお。 Reference numeral 820 denotes
an outer plate of the case main body 813, and reference numeral 821 denotes an outer plate of
the lid 814. At one corner of the outer plate 821 forming the outer surface of the lid 814, a large
number of through holes 812 for passing sound waves are made through the outer plate 821.
Inside the many through holes 812, that is, in the case 810, as shown in FIG. 22, the thin flat
speaker device 1 according to the first embodiment is faced to the many through holes 812. A
diaphragm 110 is disposed. The vibration applying unit 120 is joined and fixed to the inside of
the diaphragm 110, that is, the back surface. Further, on the inner side of the lid 814, that is, on
the back side, a support substrate 822 is screwed with a screw and detachably attached. In the
supporting substrate 822, a battery case 831 for storing a battery 824 as a speaker power
source, an audio amplifier 832, a jack 829 for inserting a plug from a CD player or the like not
shown, AC (AC) from the outside AC power input terminal 833 for connection to a 100 V power
supply, external microphone input terminal 834 for connection to an external microphone,
volume control unit 825, volume control knob 826, pilot lamp 827, and diaphragm 110 (see FIG.
22) are attached. ing. The diaphragm 110 is attached to a support substrate 822 via a diaphragm
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support bracket 835 and a support elastic body 836. In addition, a sound emission hole 847 is
opened at a position corresponding to the large number of through holes 812 of the support
substrate 822. Then, the sound wave comes out of the lid 814 through the sound release hole
847 and the through hole 812. Reference numeral 822 c denotes an edge of the sound release
hole 847 of the support substrate 822. In addition, a volume control knob 826 which doubles as
a speaker ON / OFF switch is attached to the lid 814 so as to protrude from the lid 814. The
volume control unit 825 having the volume control knob 826 faces the inside of the lid 814 and
is fixed. They are connected by wiring to the acoustic amplifier 832. A volume control shaft 826
a protrudes from the volume control knob 826 and is integrally pivoted together. The pilot lamp
827 is turned on when the volume control knob 826 is turned to turn on the speaker, and turned
off when the speaker is turned off. The volume control knob 826, the pilot lamp 827, the AC
power input terminal 833, and the external microphone input terminal 834 are attached to the
mounting base 838 fixed to the support substrate 822. The base upper and lower sides of the
mounting base 838 are in contact with an outer plate end 838a having a U-shaped cross section
in which the outer plate 821 is inserted, and the outer plate end 838a is an edge reinforcing
frame 840 via a fixing piece 838b It is attached to the edge reinforcing frame 842 by rivets.
The left and right ends of the mounting base 838 are in contact with the edge reinforcing frame
840 and the lid side opening edge reinforcing frame 842. Reference numeral 828 is a wiring
partially shown, 846 is a resin foam spacer for closing the gap between the support substrate
822 and the outer plate 821 of the lid 814, and 826a is a volume control shaft (See FIG. 22). A
cover 819 for preventing a storage item stored in the case 810 from hitting the vibration
applying unit 120, the diaphragm 110, the acoustic amplifier 832, the battery 824, the wiring
828, etc. inside the vibration applying unit 120. Are detachably attached to the support substrate
822 with screws or other fixed components via screw holes 819a (see FIG. 23). Further, a wire
129 a is derived from the acoustic amplifier 832. The cover 819 is formed in an L shape in an
end view, and a part of the cover 819 is a foamed resin such as urethane that holds the battery
824 at a position corresponding to the battery 824 when attached to the support substrate 822
The pressing member 823 made of When the cover 819 is removed, the diaphragm 110, the
speaker including the vibration applying unit 120, the battery 824, the acoustic amplifier 832,
etc. are exposed, and these can be checked, and the battery 824 can be replaced. It becomes
possible. On the other hand, 840 is an edge reinforcing frame which joins and reinforces the
edges of the outer plates 820 and 821, and 841 and 842 are in contact with each other when the
lid 814 is closed to the case main body 813 so as to be in close contact with each other. The case
main body side opening rim and the lid side opening rim are formed respectively with a convex
portion on one side and a concave groove 842a (see FIG. 22) on the other. The both opening
edge reinforcing frames 841 and 842 also serve as reinforcing frames for the opening edges of
the case main body 813 and the lid 814. Reference numeral 843 denotes a corner connection
piece which connects and reinforces the corners of the outer plates 820 and 821, the edge
reinforcing frame 840, and both opening edge reinforcing frames 841 and 842. Further, 849 are
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legs provided at the four corners of the lower end of the case 810. The inner wall of the bottom
of the case main body 813 and the lid 814 and the periphery thereof is covered with a foam
resin such as urethane for protecting stored items, or an inner line of felt or non-woven fabric.
The hinge 815 is formed with hinge stopper surfaces 815a and 815b which are opposite
surfaces of the mail and the female. The hinge stopper surfaces 815a and 815b facing each other
are separated when the lid is closed, and are in contact with each other when the lid is opened to
serve as a stopper, and the lid 814 is supported by the case main body 813 with the lid 814
opened.
In the state where the lid 814 is opened, the opening degree of the lid remains at a position
slightly over 90 °. On the other hand, on the inner side of the case of the outer plate 821, a pair
of rail-shaped rails (not shown) are disposed opposite to each other at positions partially
sandwiching the through hole 812 and the seal plate 837 guided by the rails It is slidably
mounted so as to close the through hole 812 from the inside of the case as required. A space AP
shown in FIG. 22 is a guide space into which the seal plate 837 enters and exits. And the handle
837a for making this slide easily is attached to the seal board 837. As shown in FIG. The through
hole 812 can be closed by the seal plate 837 when the speaker is not in use, and intrusion of rain
water, dust and the like can be prevented. Furthermore, the case 810, the outer plate 820 of the
case main body 813, and the outer plate 821 of the lid 814 are also made of low-foam
polyethylene of a closed cell similar to the diaphragm 110 of the thin flat speaker device 1
according to the first embodiment. It is formed of a laminated composite plate of aluminum and
low-foaming polyethylene in which face materials 112 and 113 of aluminum are joined to the
front and back of the core 111 and the core 111. Further, the outer plate 821 of the lid 814 is
provided with a through hole 812 for passing a sound wave, and the diaphragm 110 is disposed
to face the through hole 812. Therefore, the lid 814 is closed or opened. It can be used as a
speaker. In addition, the support substrate 822 can be removed from the lid 814 as described
later. As is clear from the above configuration, in the case 810 according to the eighth
embodiment, the speaker comprising the diaphragm 110, the vibration applying unit 120, etc.,
the acoustic amplifier 832, the battery case 831, and the jack 829 are directly supported. On a
plate 822, a volume control unit 825, a volume control knob 826, a pilot lamp 827, an AC power
input terminal 833, and an external microphone input terminal 834 are attached to a support
substrate 822 via a mounting base 838. Thus, the speaker and all of the components for
operating the speaker are attached to the support substrate 822. Among these, the volume
control knob 826, the pilot lamp 827, the AC power input terminal 833, and the external
microphone input terminal 834 protrude (exposed) from the lid side wall outer plate and can be
operated from the outside of the case. ing. Although the jack 829 is provided on the lower side
(lower end) of the support substrate 822, the jack 829 may also be provided so as to protrude
outward from the lid side wall outer plate as described above. It may be provided so as to
protrude from the lower end of 822 and the lid side wall skin at two places.
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A mounting base 838 on which the volume control knob 826, pilot lamp 827, AC power input
terminal 833, and external microphone input terminal 834 are mounted is fixed to the side
surface of the support substrate 822. The mounting base 838 has a lid It is fitted so as to be
fitted into the mounting base exposure opening hole 839 opened in the side wall skin 821 of
814. As described above, the mounting base exposure opening hole 839 has the left and right
opening edges thereof formed by the edge reinforcing frame 840 and the lid side opening edge
reinforcing frame 842 of the lid 814, and the upper and lower opening edges are side wall outer
plates of the lid 814 An outer plate 821 is formed so as to be surrounded by a U-shaped outer
plate end 838a which is fitted in and opened. The outer plate end 838a is riveted to the edge
reinforcing frame 840 of the lid 814 and the lid side opening edge reinforcing frame 842 via the
fixing piece 838b. On the other hand, the support substrate 822 is screwed to the side wall outer
plate 821 of the lid 814 with a screw. In this case, the screw provided on the support substrate
822 may be tightened from the outside of the side wall outer plate 821 of the lid 814.
Conversely, the screw may be tightened to the side wall outer plate 821 of the lid 814 from the
support substrate 822 side. You may do so. Reference numeral 822 b denotes a side wall outer
plate fixing portion integrally formed on the side portion of the support substrate 822. The side
wall outer plate fixing portion abuts on the side wall outer plate 821 of the lid 814 and is fixed to
the side wall outer plate 821 by screws. The mounting base 838 fixed to the support substrate
822 and the volume control knob 826 attached to the mounting base 838 or the like are
separated from the lid 814 by removing the screw and moving the support substrate 822 away
from the outer plate 821. All components attached to the support substrate 822 can be removed
from the side wall skin 821 of the lid 814 by moving the support substrate 822 laterally to the
inside of the lid 814. On the other hand, when mounting the support substrate 822 on which all
the components are mounted, the support substrate 822 is moved laterally so that the mounting
base 838 is inserted into the mounting base exposure opening 839, and the mounting base
exposure opening The mounting base 838 is fitted in the hole 839 and screwed between the side
wall outer plate fixing portion 822 b of the support substrate 822 and the side wall outer plate
821 of the lid 814. After removing the support substrate 822 and removing the speaker, volume
control knob 826 and the like, a hole filling plate (not shown) having a hole filling convex part
matching the mounting base exposure opening hole 839 is supported. The substrate 822 is fixed
to the side wall skin 821 of the lid 814 by screws.
Thus, the opening formed by removing the mounting base 838 can be closed and used only as
the case 810. That is, when the diaphragm 110 attached to the support substrate 822, the
speaker including the vibration applying unit 120 and the like, the acoustic amplifier 832, the
battery case 831, the volume control unit 825 and the like are not used as a speaker for a long
time The storage space of the case can be expanded and used by using it as the case only. It can
also be used with reduced weight. Further, as described above, since the diaphragm 110 and the
case main body 813 and the outer plates 820 and 821 of the lid 814 are made of the same
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material (quality), material management can be facilitated without increasing the types of
materials. At the same time, the processing method and processing apparatus can be unified, and
can be provided inexpensively. In addition, the speaker device can be easily replaced with a new
one or one of different specifications and types. Furthermore, when a speaker etc. breaks down
or at the time of maintenance, the support board 822 which has the speaker consisting of the
diaphragm 110 and the vibration application unit 120 etc., the volume control knob 826 etc. It
can be sent to the station for inspection and repair. When the support substrate 822 is removed
and the speaker including the diaphragm 110, the vibration applying unit 120 and the like is
removed, the seal plate 837 is slid to prevent the entry of rainwater or the like into the case 810.
The through hole 812 may be always closed. Similar to the case 4 according to the fourth
embodiment described above, the case 810 having the above configuration may receive audio
signals from a personal computer and play music and voice as the personal computer storage
case. [0168] Alternatively, for commentary or advertisement from a case as an esthetic tool or
makeup tool storage case, which is connected to a voice reproduction device containing
commentary or advertisement at the time of demonstration of beauty salon or make-up and
storing beauty salon or make-up tools. You may make it flow the voice of. Alternatively, it may be
connected to a CD player stored in a case and brought into play, for example, by placing a
plurality of cases 810 in one corner of the hall borrowed to a dance practice hall, or in four
corners of the hall. . As a modified example of the case according to the eighth embodiment
described above, when it is desired not to mix rainwater etc. from the through hole 812, the
cover 819 is used instead of the through hole 812 on the outer plate 821 side. And the
diaphragm 110 is disposed facing the through hole provided in the cover 819, and the vibration
applying portion 120 is joined and fixed to the outside of the diaphragm 110, that is, the outer
plate 821 side of the lid 814. The structure to do is considered.
In this case, the lid 814 is opened when using the speaker. Further, a through hole through
which the sound wave passes is made clear in the outer plate 821 of the lid 814 and opened in
the cover 819, and a through hole 812 and a cover 819 made in the outer plate 821 of the lid
814 When the lid 814 is released, sound may be made to flow from both the front surface and
the rear surface of the lid 814. Further, the through hole 812 is opened at the upper center of
the outer plate 821 of the lid 814, that is, near the handle 817 when the lid 814 is closed, and
the diaphragm 110, the vibration applying portion 120, the acoustic amplifier 832, and the
battery case 831. Or the like may be disposed in the central portion so that the left and right
weights centering on the handle 817 are not biased when there is no storage in the case 810 and
the inside of the case is empty, making it easy to hold. The thin flat speaker device 2 according to
the second embodiment is used as a diaphragm or the like, and the outer plate 820 of the case
main body 813 and the outer plate 821 of the lid 814 are the thin flat speaker device 2
according to the second embodiment. The same material (quality) as the diaphragm 210 may be
used. In this case, in terms of weight reduction of the case, although the case is slightly inferior to
the case 810 described above, the case can be excellent in terms of strength. [0175] When the
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case 810 is used for cosmetic sales by storing the cosmetic in the case 810, the container filled
with the cosmetic is stored and easily taken out, and an inner lid, band or partition for holding
the container is provided, etc. A core material 111 made of low foam polyethylene of a closed cell
as a material forming the outer plate 820, 821 of the lid 814 of the case 810 and an aluminum
thin plate or stainless steel thin plate mirror-finished or mirror-finished on the front and back of
the core 111 By using a mirror plate obtained by bonding the surface members 112 and 113 or
a laminated composite plate of mirror-finished metal and low-foam polyethylene, both inner and
outer surfaces or the inner surface of the lid 814 may be used as a mirror. . Then, when only the
inner surface can be used as a mirror, leather or cloth of various colors is attached to the outer
surface of the lid 814, and the appearance of the case 810 is a color leather or cloth attached
case. be able to. Further, all the outer plates 820 and 821 of the case main body 813 and the lid
814 are formed of the above-mentioned laminated composite plate, and all surfaces of the case
main body 813 and the lid 814 can be used as mirrors. By selecting a surface selected from all
surfaces of case 810 as a mirror, and attaching a leather or cloth to the other surface as
described above, it is possible to increase the freedom of design while using outer plates 820 and
821 as a mirror. .
The case 810 is used as a cosmetic storage case, and can be used for playing voices or playing
commentary or advertising voices or music such as BGM for demonstrations such as beauty
treatment or make-up at the time of sales, and further convenience. An improved cosmetic sales
case 810 may also be provided. Next, a case 850 according to the ninth embodiment of the
present invention will be described. In the drawings, FIG. 24, FIG. 25, and FIG. 26 correspond to
the ninth embodiment. This case 850 is a through hole 852 through which the sound wave
generated in the case 850 passes through at least a part of the outer plate 821 forming the outer
surface 851 of the case 850 made of aluminum or the like as shown in FIG. In the sound source
portion disposed facing the inside of the through hole 852, a cone-shaped speaker device 853 is
used instead of the diaphragm 110 and the vibration applying portion 120 which are the sound
source portion of the eighth embodiment described above. (See FIG. 26) is used. The case 850
itself maintains sufficient strength. This is because the edge reinforcing frames and the outer
plates are firmly connected to each other. Specifically, the edge reinforcing frame 840 and the
outer plate 821 are firmly fixed by caulking 840a. That is, since outer plate 821 has core 111
made of resin and front and back made of aluminum thin plates 112 and 113 and edge
reinforcing frame 840 is made of aluminum, the joint between edge reinforcing frame 840 and
outer plate 821 is pressed from the inside of the case with a die or the like. Then, this joint is
crimped and both are firmly connected. Further, since the edge reinforcing frame 840 has
different lengths in the cross sectional direction on the inner side and the outer side and the
outer side is longer than the inner side, the caulking 840a is covered on the outer side of the rim
reinforcing frame 840 and distortion due to caulking of the outer plate 821 does not reach the
outer side It can not be seen from the outside of the case, and the appearance of the case is not
impaired. Note that both opening edge reinforcing frames 841 and 842 on the case main body
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side and lid side and the outer plates 820 and 821 are fixed via rivets via corner pieces, and they
are also firmly connected. The through hole 852 is formed in a circular shape as a whole so as to
correspond to the cone portion of the cone type speaker device 853. Further, unlike the eighth
embodiment, the volume control knob 826 and the pilot lamp 827 are provided on the outer
plate 821 on the handle 817 side. The side outer plate 821 is provided with an external
microphone input terminal 834 and an AC power input terminal (power terminal for AC 100 V)
833. Further, in the hinge 815, as in the eighth embodiment, the e-mails of the hinge 815 and
hinge stopper surfaces 815a and 815b which are opposite surfaces of the female are formed,
and the angle is 90 when the lid 814 is opened. It is designed to maintain a position slightly
beyond the °.
In the ninth embodiment, a cone-shaped speaker device 853, an acoustic amplifier 832, a battery
case 831, a volume control unit 825, and a pilot lamp 827 are directly attached to the support
substrate 822. On the other hand, a pin terminal connector 828 a connected to an AC power
input terminal 833, an external microphone input terminal 834, and a socket (not shown)
forming a connector is attached to the side wall outer plate 821 of the lid 814. Further, a wire
855 leading to the AC power input terminal 833, the external microphone input terminal 834,
and the pin terminal connector 828a is provided inside the protective cover 828b fixed to the
outer plate 821 of the lid 814. . The cover for protection 828 b removes the support substrate
822 on which the cone-shaped speaker device 853, the acoustic amplifier 832, the battery case
831, the volume control unit 825, the pilot lamp 827 and the jack 829 are attached from the
case 850. The AC power input terminal 833, the external microphone input terminal 834, the pin
terminal connector 828a, and the wiring 855 from these terminals to the pin terminal connector
828a remaining in the lid 814 of the case 850 are accommodated in the case 850. It is for
protecting not to abut on things. The volume control knob 826 is detachably provided to the
volume control axis (axis of the volume control knob 826) coming out of the volume control
section 825. Further, the volume control shaft 826 a protrudes from the outer plate 821 of the
lid 814, and the volume control knob 826 inserted and fixed to the volume control shaft 826 a is
exposed outside the outer plate 821 of the lid 814. In the circumferential direction of the volume
adjustment shaft 826a and the circumferential direction of the volume adjustment knob 826,
four convex ridges 826b and key groove slits corresponding to this are provided at equal
intervals, and both are fitted. As a result, the volume control knob 826 and the volume control
shaft 826a are detachably and integrally pivoted. However, instead of the ridges 826 b and the
key groove slits, a large number of mountain-shaped projections are formed at constant intervals
along the axial longitudinal direction over the entire outer periphery of the volume adjustment
shaft 826 a. A slit corresponding to the projection may be formed over the entire inner
circumference, and both may be fitted and rotated integrally. Note that the volume control unit
825 having the volume control axis 826 a and the pilot lamp 827 are attached to the support
substrate 822 so as to remove the support substrate 822 and remove it.
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On the other hand, the pilot lamp 827 is exposed to the outside of the outer plate 821 of the lid
814, that is, the outer side of the case from the hole made in the outer plate 821 of the lid 814.
Since the concave groove 842a (see FIG. 25) is formed in the lid side opening rim frame 842 and
the convex portion 841a is formed in the case main body opening rim reinforcing frame 841,
when the lid 814 is closed, The lid 814 is in close contact with the case body 813. On the other
hand, a notch 822 a of the support substrate 822 is provided at a position corresponding to the
protective cover 828 b of the support substrate 822. By providing this notch 822a, a gap (see
FIG. 26) of the dimension A--A of the volume adjustment axis 826a and the movement amount of
the pilot lamp 827 plus alpha is provided (see FIG. 26). When the shaft 826 a and the pilot lamp
827 are moved to the inside of the lid 814 and removed from the outer plate 821 of the lid 814,
the support substrate 822 does not abut on the protective cover 828 b. Then, when the speaker
unit including the cone-shaped speaker device 853, the acoustic amplifier 832, the battery case
831, the volume control unit 825, the volume control shaft 826 a, and the pilot lamp 827
attached to the support substrate 822 is removed from the case 850, First, remove the screwed
cover 819 from the support substrate 822 to expose wiring and connectors, disconnect the
connector's pin terminal connector 828a from the socket not shown, and project it out of the
outer plate 821 of the lid 814 Remove the volume control knob 826 from the volume control
shaft 826a and remove it. After that, the screw securing the space between the support substrate
822 and the lid side wall outer plate 821 is removed, the support substrate 822 is moved
downward, and the volume control shaft 826 a and the pilot lamp 827 are removed from the
outer plate 821 of the lid 814 After being pulled inward of 814, the support substrate 822 is
completed by moving the inside of the lid 814 laterally. As described above, also in the ninth
embodiment, the removal operation of the speaker and the like can be easily performed. [0190]
The holes of the volume control shaft 826a and the pilot lamp 827 after the speaker etc. are
removed together with the support substrate 822 can be securely inserted by inserting a
grommet (not shown) which is a hole filling member such as rubber. Can be covered. Further, by
fixing the cover 819 again with a screw to the supporting substrate 822 from which the speaker
and the like have been removed, the exposure of the cone type speaker device 853, the acoustic
amplifier 832, the volume control unit 825, the wiring and the like is covered. It is also possible
to protect them during their storage.
At that time, the volume control knob 826 is inserted into the volume control axis 826 a and
stored. [0193] FIG. 25 shows a state in which the case 850 contains a personal computer PC, a
mobile phone (or remote control) SP, and an AC power supply adapter AD, and the lid 814 of the
case 850 is opened. Inside the case body 813 of the case 850, a member 871 for fixing and
protecting the device made of urethane foam is fitted, and the PC body accommodating recess
871a, the cellular phone accommodating recess 871b, and the AC power adapter accommodating
recess 871c are appropriate places Is formed. A PC lid opening / closing operation recess (gap)
871d is formed in the PC body housing recess 871a at a position corresponding to the lid
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opening / closing lock portion HL and the side of the housed PC, and the PC is housed in the case
850. A recessed portion (gap) 871 e for connecting the connection cord CB to the personal
computer input / output terminal in the above state is formed. Thus, the lid opening and closing
lock portion HL of the personal computer PC can be easily operated to open and close the lid of
the personal computer PC, and the personal computer PC and the acoustic amplifier 832 of the
lid 814 are connected via the connection cord CB. Is possible. The AC power input terminal 833
and the external microphone input terminal 834 provided on the side wall outer plate 821 of the
lid 814 can be used even when the lid is open as shown in the figure, thereby enhancing the
usability of the case 850. ing. Furthermore, the volume control knob 826 and the pilot lamp 827
provided on the outer plate 821 above the lid 814 become considerably higher than the
mounting surface of the case 850 when the lid 814 is opened, so that volume control and
speaker It is easy to check the operation. On the other hand, inside the lid 814, a storage portion
872 for storing a large notebook, a document or the like is provided while maintaining an
appropriate degree of opening via the holding belt 872a. A pen holder 873, various cases such as
a CD and a floppy (registered trademark), and two storage units 874 and 875 used as card
storages are further provided on the side surface of the storage unit 872, thereby enhancing
convenience in use of the case. The other structure of the ninth embodiment is the same as the
structure of the eighth embodiment, so the same reference numerals are given to the drawings
and the description will be omitted. Further, with regard to the operation and effect of the ninth
embodiment as well, of the operation and effect of the eighth embodiment, the material (quality)
of the outer plate 820 of the case main body 813 and the outer plate 821 of the lid 814 and the
diaphragm 110 The same effects as those of the eighth embodiment are obtained except that the
same effects as the material (quality) are achieved, and the management of materials is facilitated
and the processing method and processing device can be unified as well as the types of materials
are increased. You can get it.
Further, in the case 850 having the above configuration, as in the case 4 according to the fourth
embodiment described above and the case 810 according to the eighth embodiment, music and
voice are played upon receiving an audio signal from a personal computer. Also, when playing
esthetics or make-up, it can be connected to an audio playback device that contains commentary
and advertisements, and audio for commenting on esthetics and make-up tools and advertising
can be streamed. It is also possible to connect to a CD player and play music, for example, at one
or four corners of a dance practice area. Further, in the ninth embodiment, by using a large
number of cone type speaker devices 853 distributed in the market, a cheaper case as a case
with a speaker, a better case of sound quality, etc. It is easy to select and provide. A modification
equivalent to the modification of the eighth embodiment is also conceivable in the ninth
embodiment. Subsequently, a case 850 according to the tenth embodiment of the present
invention will be described. FIG. 27 corresponds to the tenth embodiment. With respect to the
case 850 of the tenth embodiment, a cone-shaped speaker device 853, an acoustic amplifier 832,
a battery case 831, a volume control unit 825, a pilot lamp 827, a volume control knob 826, an
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AC power input terminal 833, an external microphone An input terminal 834 and a jack 829 are
attached to the support substrate 822 side. Among them, the volume control axis (the axis of the
volume control knob) 826a, the volume control knob 826, and the pilot lamp 827 are exposed
outward from the outer plate 821 of the top wall of the lid 814, It is attached to the support
substrate 822 via In addition, the AC power input terminal 833 and the external microphone
input terminal 834 are exposed outward from the outer plate 821 of the side wall of the lid 814,
and are supported via the external input terminal mounting base 877 (see FIG. 28). (Not shown).
The two mounting bases 876 and 877 are respectively inserted into the external input terminal
exposing opening 877a in the volume adjusting portion exposing opening 876a opened in the
outer plate 821 of the lid 814, and the external input terminal is attached In the external input
terminal exposure opening 877a which is the opening on the base 877 side, the volume
adjustment knob 826, the pilot lamp 827, and the volume adjustment axis 826a together with
the volume adjustment portion attachment base 876 are provided from the outer plate 821
above the lid 814 A slide groove 878 (see FIG. 27 and FIG. 28) is provided as a space for moving
the supporting substrate 822 to which the mounting bases 876 and 877 are attached downward
when the lid is pulled out to the inside of the lid.
The slide groove 878 has an external input terminal for moving an amount necessary to extract
the volume control knob 826 and the pilot lamp 827 together with the volume control unit
mounting base 876 from the volume control unit exposure opening 876a to the inside of the lid
814 It secures below the mounting base 877, and is formed by providing the external input
terminal exposure opening 877a to the external input terminal mounting base 877 in a size
obtained by adding the amount of movement. With regard to the external input terminal
exposure opening 877a including the slide groove 878 and the volume adjustment unit exposure
opening 876a, the left and right edges are the top and bottom of the edge reinforcing frame 840
and the lid side opening edge reinforcing frame 842 of the lid 814. The edge is formed so as to
be surrounded by an opening edge 879 having a U-shaped cross section. The opening rim 879
has a U-shaped cross section, into which the outer skin 821 of the side wall of the lid 814 and
the outer skin 821 of the upper wall of the lid 814 are fitted, and the end of the opening rim 879
The portion is fixed to the edge reinforcing frame 840 of the lid 814 and the lid side opening
edge reinforcing frame 842 via a fixing piece 879 a. In the tenth embodiment configured as
described above, when removing the cone-shaped speaker device 853, the acoustic amplifier 832
and the like together with the support substrate 822, first, the support substrate 822 and the
outer plate 821 of the side wall of the lid 814 The screw fixing between is removed and the
support substrate 822 is pushed downward. At this time, since the slide groove 878 is opened in
the external input terminal exposure opening 877 a, the external microphone input terminal 834,
the AC power input terminal 833, etc. are provided outside the outer plate 821 of the side wall of
the lid 814. Together with the volume adjuster mounting base 876 exposed to the outside from
the outer plate 821 of the upper wall of the lid 814 to allow downward sliding of the exposed
external input terminal mounting base 877 (see the arrow in FIG. 28) , The volume control knob
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826 provided on the volume control unit mounting base 876, the pilot lamp 827, etc. are
extracted to the inside of the lid 814 from the volume control unit exposure opening 876a
opened in the outer plate 821 of the upper wall of the lid 814 be able to. Next, the support
substrate 822 is moved in the lateral direction, the external input terminal mounting base 877 is
extracted from the external input terminal exposure opening 877a to the inside of the lid 814,
and the configuration of all the cone type speaker devices 853 and the like Remove support
substrate 822 with attached elements. After both the cone-shaped speaker device 853 and the
like are removed together with the support substrate 822, the two openings 876 a and 877 a
have openings insertion projections 880 a and 880 b formed in the hole filling member 880 (see
FIG. 29). The hole filling member 880 is fixed to the outer plate 821 of the side wall of the lid
814 again using the screws inserted respectively and fixing the support substrate 822 and the
outer plate 821 of the side wall of the lid 814.
The opening insertion protrusion 880a inserted into the volume adjustment unit exposure
opening 876a is formed in the same shape and size as the volume adjustment unit exposure
opening 876a, and is formed in the external input terminal exposure opening 877a. The opening
insertion protrusion 880b to be inserted is formed in the same shape and size as the external
input terminal exposure opening 877a including the slide groove 878. The biconvexes 880a and
880b of the hole-filling member 880 can be inserted into the two openings 876a and 877a to
completely close the two openings 876a and 877a. As described above, the case 850 according
to the tenth embodiment is provided with the slide groove 878 so that the external input
terminal mounting base 877 can also slide downward when the volume adjusting portion
mounting base 876 is lowered. It is characterized in that the external input terminal mounting
base 876 can slide up and down in the slide groove 878 opened in the outer plate 821 of the
side wall of the lid 814. Further, like the case 810 according to the eighth embodiment described
above and the case 850 according to the ninth embodiment, the speaker etc. is not used in the
case 850 according to the tenth embodiment, and the speaker etc. When repairing the speaker or
replacing the speaker, the volume control knob 826 which projects the support substrate 822 to
which the cone-shaped speaker device 853 and the acoustic amplifier 832 are attached from the
lid 814 of the case 850 above the case 850, a pilot The lamp 827 and the like, and the AC power
input terminal 833 protruding to the side of the case 850, the external microphone input
terminal 834 and the like are removed. Incidentally, in addition to the hole filling member 880,
the hole filling plate 881 of another component shown in FIG. 29 (b) is applied to the both
openings 876a and 877a of the lid 814 formed after the support substrate 822 is removed. The
two openings 876a and 877a may be fitted and closed. In this case, it is preferable that the hole
filling plate 881 be biased by springs 882a and 882b so as not to come off. As to the operation
and effect of the tenth embodiment, as in the operation and effect of the ninth embodiment, the
skin of the case main body 813 and the skin of the lid 814 are also included in the operation and
effect of the eighth embodiment. The same as the material (quality) of the material and the
material (quality) of the diaphragm 110, not only to increase the types of materials but also to
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facilitate the management of the material and to remove the effect of being able to unify the
processing method and processing device The same effect as that of the eighth embodiment can
be obtained.
Also in this tenth embodiment, as in the ninth embodiment, the cone-type speaker device 853
which is on the market in various types and in large quantities is used, so a cheaper case or a
better case of sound quality, etc. Can be selected and provided. The case 850 of the tenth
embodiment having the above configuration is the same as the case 4 of the fourth embodiment
described above, the case 810 of the eighth embodiment, and the case 850 of the ninth
embodiment. It is possible to play music and voice through a personal computer, play voice for
commentary and advertisement during a performance of beauty treatment and make-up, or play
music in a dance practice field by connecting to a CD player. The present invention is a thin flat
speaker device that can be used in various ways in addition to the embodiments described above.
For example, the thin flat speaker device according to the present invention can be used for a
frame of a bicycle or a motorcycle. In that case, the diaphragm is used as a frame, the diaphragm
is connected to the box closed cross section, and the vibration applying unit is provided in the
box closed cross section. In addition, when there is no power supply like a bicycle, it is good to
use a battery as a power supply and attach a battery box to the frame section. In addition, the
support of the free-standing flat speaker device of the present invention has a clamp shape that
can be attached by sandwiching the handle or frame of a bicycle or bike, the clamp portion is
tightened with a wing nut or the like to handle the bicycle or bike handle or frame It can also be
a thin flat speaker device that can be attached to or detached from. As described above, in the
thin flat speaker device according to claim 1 or 2 of the present invention, the front and back
sides of the diaphragm are aluminum or stainless steel, and the core material is a closed cell.
Even low-foamed polyethylene has no through holes in the front and back direction, is smooth
and aesthetic, prevents deterioration of performance, has high rigidity, and has good adhesion. In
addition, the core material is low-foamed polyethylene with closed cells, has low density and low
density with closed cell holes, is lightweight and has high rigidity, and suppresses waving of
aluminum or stainless steel on the front and back, and is flat and smooth Form a smooth surface.
As a result, the diaphragm as a whole is a structure having a low density, light weight, high
bending and rigidity, and mechanical properties such as no through holes in the front and back
direction, thereby providing high performance. In addition, since aluminum or stainless steel and
low-foam polyethylene are used for the diaphragm, the material can be easily obtained, and an
inexpensive thin flat speaker device can be obtained.
In the bulletin board according to claim 3 of the present invention, since the aluminum facing of
the diaphragm or the stainless steel facing faces the lighting means side, the light of the lighting
means is the aluminum facing Alternatively, the surface of the stainless steel is reflected, and a
flat, uniform reflected indirect light is emitted from the light-transmitting bulletin board to the
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billboard to make the viewer look beautiful and the lighting means is built-in. It is not necessary
to provide a lighting means outside, and the appearance without projections on the outside is
simple and the handling is excellent. Moreover, since the diaphragm of the thin flat speaker
device according to claim 1 or 2 is used for the back plate, the sound is emitted from the back
surface of the bulletin board, and a notice is provided in front of the sound emitting surface of
the diaphragm. Because there is no sound can be generated. Further, as in the thin flat speaker
device according to claim 1 or 2, the material can be easily obtained, and the board becomes
inexpensive, high in rigidity and robust. Moreover, it has the structure that the through-hole in
front and back direction does not have the front and back of a diaphragm. Therefore, when air
movement occurs due to temperature differences between the inside and outside of the speaker
device provided on the display panel etc., dust and dirt will accumulate in the through holes like
the conventional diaphragm and cause contamination. prevent. The case according to claim 4 of
the present invention, like the thin flat speaker device and the bulletin board described in the
above-mentioned claim, is a case which is easily obtained with low cost, has high rigidity and is
robust. In addition, the diaphragm can be used also as the outer plate and the inner bottom plate
of the case, which makes the case strong and good sound. The free-standing flat speaker device
according to claim 5 or 6 of the present invention is easy to obtain the material as well as the
thin flat speaker device, the bulletin board and the case described in the above-mentioned claim,
and is inexpensive. High rigidity and stand-alone self-supporting flat speaker device. In addition,
the frame covers the periphery of the diaphragm and looks good. In the display device according
to claim 7 or 8 of the present invention, like the thin flat speaker device, the bulletin board, the
case, and the free standing flat speaker device according to the above-mentioned claims, the
material can be easily It is an inexpensive, rigid and robust display device. In addition, the frame
covers the periphery of the diaphragm and looks good. In the wall mounted flat speaker device
according to claim 9 or 10 of the present invention, the thin flat speaker device, the bulletin
board, the case, the self supporting flat speaker device, the display device and the display device
according to the above-mentioned claims Similarly, the material is easily obtained and it becomes
an inexpensive, rigid and rigid wall-mounted flat speaker device.
In addition, the frame covers the periphery of the diaphragm and looks good. Furthermore, the
thin flat speaker device can be easily attached to the wall through the frame. In the case
described in claim 11 of the present invention, the speaker device portion can be easily obtained
as an inexpensive material having high rigidity and high rigidity, and can be a thin speaker which
is rigid and is provided inside the case and outside the case. Since the sound waves are emitted to
the outside through the through holes formed in the plate, the speaker device can be protected.
Further, since the speaker device portion can be detached along with the supporting substrate to
which the speaker device portion is attached, when not used as a speaker, the speaker device
portion can be detached to expand the housing portion as a case and reduce weight. BRIEF
DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a thin flat speaker apparatus
according to a first embodiment of the present invention. 2 is a cross-sectional perspective view
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of a diaphragm used in the thin flat speaker device of FIG. 1; FIG. 3 is a cross-sectional view of a
thin flat speaker device according to a second embodiment of the present invention. 4 is a crosssectional perspective view of a diaphragm used in the thin flat speaker device of FIG. 2; FIG. 5 is a
perspective view partially showing a bulletin board according to a third embodiment of the
present invention. 6 is a cross-sectional view taken along the line VI-VI of the bulletin board of
FIG. 5; 7 is a cross-sectional view taken along the line VII-VII of the bulletin board of FIG. 5; 8 is a
sectional view taken along the line VIII-VIII of the bulletin board of FIG. 5; FIG. 9 is a perspective
view of a case according to a fourth embodiment of the present invention. 10 is a cross-sectional
view of the case of FIG. 9 taken along the line XX. 11 is a perspective view showing the case of
FIG. 9 in an open state. FIG. 12 is a perspective view of a freestanding flat speaker device
according to a fifth embodiment of the present invention. 13 is a cross-sectional view taken along
line XIII-XIII of the free-standing flat speaker device of FIG. 12; 14 is a cross-sectional view taken
along line XIV-XIV of the free-standing flat speaker device of FIG. FIG. 15 is a perspective view of
a display device according to a sixth embodiment of the present invention and a wall-mounted
flat speaker device according to the seventh embodiment. 16 is a cross-sectional view of the
display apparatus of FIG. 15 taken along XVI-XVI. 17 is a cross-sectional view of the display
device of FIG. 15 taken along line XVII-XVII; 18 is a cross-sectional view corresponding to FIG.
17 and showing a modification of the display device shown in FIG. 15; 19 is a cross-sectional
view of the wall-mounted flat speaker device of FIG. 15 taken along a line XVIIII-XVIIII.
FIG. 20 is a cross-sectional view of the wall-mounted flat speaker device of FIG. FIG. 21 is a
perspective view of a case according to an eighth embodiment of the present invention. 22 is a
cross-sectional view of the case shown in FIG. FIG. 23 is a perspective view of a cover used in the
case of FIG. 21; FIG. 24 is a perspective view of a case according to a ninth embodiment of the
present invention. 25 is a perspective view of the case shown in FIG. 24 with the lid open. 26 is a
cross-sectional view taken along line SB-SB of the case shown in FIG. FIG. 27 is a cross-sectional
view corresponding to FIG. 26 of a case according to a tenth embodiment of the present
invention; FIG. 28 is a cross-sectional view showing in detail the mounting state of the external
microphone input terminal mounting base in FIG. 27; 29 is a view showing a hole filling member
and a hole filling plate to be fitted instead of the external microphone input terminal mounting
base of FIG. 28 in a fitting state. [Description of the code] 1, 2 Thin flat speaker device 3 Bulletin
board 4 Case 5 Free-standing flat speaker device 6 Display device 7 Wall mounted flat speaker
device 110 Diaphragm 111 Core material 112, 113 Surface material 114, 115 Paint layer 116,
117 adhesive layer 120 vibration applying unit 120a wiring 121 bobbin 122 voice coil 123
magnetic gap 124 plate spring 125 housing 125a bottom plate 125b mounting flange 125c gap
126 permanent magnet 127 iron plate 128 damper 129 jack 129a lead wire 130 acoustic
amplifier 210 diaphragm 211 core Material 212, 213 Face material 214, 215 Adhesive layer 22
Vibration application unit 221, 222 Ceramics 223 Brass electrode plate 224 Vibration
transmission unit 225 Damper weight 231 Plug 232 Wiring 310 Bulletin unit 311, 312 Support
panel 313 Bulletin panel 313a Front end 313b Cover frame insertion groove 320 Fluorescent
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lamp 321 Acrylic plate 322 INOS Canceller 330 frame 331 support frame 332 cover frame 332a
rear edge 332b cover frame insertion groove 332c notice panel insertion groove 333 hinge 333a
spring 334 lid 335 front edge plate 335a side edge 410 case main body 412 urethane 412a
storage recess 420 lid 421 lid Inner bottom plate 422 Urethane 423 Outer plate 423a Front
plate 423b Side plate 424 Edge reinforcement frame 425 Outer plate 426 Corner reinforcement
piece 427 Space in the lid 430 Hinge 440 Handle 450 Locking tool 510 Frame 520 Support base
521 Support connecting member 530 Amplifier 531 Jack 540 External sound equipment 541
Connection cord 610 Thin display 621 Frame 623 Elastic body 624 Frame 630 Elastic body 640
Display support base 641 Support leg 710 Frame 711 Clamping part 712 Wall mounting
extension 713 Vibration absorbing elastic body 714 Vibration absorbing elastic body 730
Concave area 810 Case 811 Outer surface 812 Perforated 813 Case body 814 Dew 815 Hinge
815a, 815b Hinge stopper surface 816 Pivot axis 817 Handle 818 Hook 819 Cover 819a Screw
hole 820 Outer plate 821 Outer plate 822 Support substrate 822a Notch 822b Side wall outer
plate fixing portion 822c Edge 823 Holding member 824 Battery 825 Volume control 826
Volume control knob 826a Volume control axis 826b Convex bar 827 Pilot lamp 828 Wiring
828a Pin terminal connector 828b Protective cover 829 Jack 831 Battery case 832 Acoustic
amplifier 833 AC power input terminal 834 External microphone input terminal 835 diaphragm
Support bracket 836 Support elastic body 837 Seal plate 837a Handle 838 Mounting base 838a
Outer plate end 838b Fixed piece 839 Mounting base exposure opening hole 840 Edge
reinforcement frame 840a Crimping 841 Case body side opening edge reinforcement frame
841a Convex part 842 Lid side opening edge reinforcement frame 842a Groove 843 Corner
connection piece 846 Spacer 847 sound emission hole 849 leg 850 case 851 outer surface 852
through hole 853 cone type speaker device 855 wiring 876 volume control unit mounting base
876a volume control unit exposure opening 877 external input terminal mounting base 877a
external input terminal exposure opening 878 Slide groove 879 Opening rim 879a Fixing piece
880 Hole filling member 880a, 880b Opening insertion convex 88 881 Hole plate 882a, 882b
Spring AD AC power adapter CB connection cord HL lid opening lock part PC PC
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