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DESCRIPTION JP2014216741

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DESCRIPTION JP2014216741
Abstract: The present invention provides a speaker device capable of propagating voice with
good sound quality to a user who is in the front, and increasing the degree of freedom of design.
A speaker unit installed upward, a head piece provided on the speaker unit, and a light emitting
element provided at a position not interfering with the propagation of sound between the
speaker unit and the head piece Have. The head piece has a reflector that reflects the sound
emitted by the speaker unit in the lateral direction, and the light emitting element is provided
toward the reflector. The reflector may be a surface formed by joining two triangles directed
from the lower end angle of the back plate to the upper side of the sound outlet. [Selected figure]
Figure 1
Speaker device and headpiece used for the speaker device
[0001]
The present invention relates to a speaker box provided with a speaker unit facing upward.
[0002]
In general, many speaker devices have a box-like shape in which a speaker unit is attached to the
front surface, which is the front direction to the user.
Therefore, the front surface that touches the user's eyes is whether the speaker unit is exposed
or covered with a net-like front grille. Many decorations could not be made because the speaker
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unit should not impede the propagation of the sound emitted. For this reason, the conventional
speaker apparatus was lacking in decorativeness.
[0003]
Unexamined-Japanese-Patent No. 2007-274313
[0004]
Therefore, if the speaker unit is provided on the upper surface or side, etc., it is possible to freely
decorate the front that touches the user's eyes, but if the speaker unit is provided in such a
direction, the sound emitted is good with good sound quality. It did not propagate to the user.
Further, it is conceivable to provide a member for reflecting in the front direction the sound
emitted toward the upper side or the side, but there is a possibility that the speaker device may
not be decorative by that member.
[0005]
An object of the present invention is to provide a speaker device capable of propagating voice
with good sound quality to the user in front and increasing the degree of freedom of design, and
a head piece used for the speaker device.
[0006]
A speaker device according to the present invention includes a speaker unit installed upward, a
head piece provided on the speaker unit, and a light emitting element provided at a position that
does not impede the propagation of sound between the speaker unit and the head piece. And
have.
The head piece has a reflector that reflects the sound emitted by the speaker unit in the lateral
direction, and the light emitting element is provided toward the reflector.
[0007]
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In another aspect of the present invention, the head piece has a substantially cube-shaped main
body portion and a skirt formed around the lower side of the main body portion, and the main
body portion is opened at substantially the same diameter as the diameter of the speaker unit.
And a sound outlet provided by cutting out two adjacent side surfaces of the four side surfaces of
the main body, and a back plate which is a wall surface of the other two side surfaces. The light
emitting element is provided at a corner on the sound emission port side between the bottom
plate on the inner side of the skirt and the speaker unit. Further, the reflector may be a surface
having a shape in which two triangles directed from the lower end angle of the back plate to the
upper side of the sound emission port are joined.
[0008]
The head piece according to the present invention is a member for sound reflection provided on
the front surface of the speaker unit, and has a substantially cube-shaped main body and a skirt
formed below the main body. The main body is a bottom plate having an opening of
approximately the same diameter as the aperture of the speaker unit, a sound outlet provided by
notching two adjacent side surfaces, and wall surfaces of the other two side surfaces, restricting
the sound propagation direction And a reflector which is a surface formed by joining two
triangles directed from the lower end angle of the back plate to the upper side of the sound
emission port.
[0009]
According to the present invention, even if the speaker unit is not directed to the front of the
user, the sound can be reflected and propagated toward the user, and the light reflection surface
can be decoratively illuminated with light.
[0010]
External view of a speaker according to an embodiment of the present invention. Perspective
view of a headpiece and a speaker unit according to an embodiment of the present invention.
Perspective view of the headpiece and speaker unit. Perspective view of a headpiece of a speaker
unit. Showing the direction of travel of light emitted from the LED and the LED
[0011]
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A speaker and a head piece to which the present invention is applied will be described with
reference to the drawings.
FIG. 1 is an external view of a speaker 1 according to an embodiment of the present invention.
The same figure (A) is a front view, and the same figure (B) is a left side view. In this embodiment,
the word "speaker" is used as the name of a device having a speaker unit which is a sound
producing body and a housing (speaker box) accommodating the speaker unit.
[0012]
As illustrated, the housing 11 of the speaker 1 has a substantially square pole shape, and has a
shape in which the width is slightly narrowed toward the upper side. That is, exactly, it has a
square frustum shape. The slope to the vertical of the side is 2 percent. As shown in the figure,
the speaker 1 is installed with its side (edge line) facing the front, not the surface. Further, the
speaker units 20, 21 and 22 are provided on the upper surface and the back side, and are not
provided on the front side. On the front side, a decorative lighting element such as an LED is
provided instead of the speaker unit. A rod-shaped pillow 13 is provided at the bottom of the
housing 11. The speaker 13 is supported by the pillow 13 and a disc-like base 14 provided at the
lower end of the pillow 13. As described above, the speaker provided with the vertically long
casing 11 and having the ridge line (angular direction) instead of the surface installed on the
front has a characteristic shape and has a good fit when installed in the corner of the room .
[0013]
On the back side of the housing 11, a speaker grill 12 is provided which covers the speakers 21
and 22 on the back side. The upward facing speaker unit 20 is fixed to the upper end of the
speaker box 30 which is a space formed in the upper part of the housing 11. Further above the
speaker unit 20, a headpiece 10 according to another embodiment of the present invention is
provided. The speaker unit 20, the speaker box 30, and the head piece 10 constitute a speaker
device of the present invention.
[0014]
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FIG. 2 is a perspective view of a state in which the head piece 10 and the speaker unit 20 are
taken out of the speaker 1. FIG. 3 is a three-sided view of the head piece 10 and the speaker unit
20. As shown in FIG. FIG. 4 is a perspective view of the head piece 10 and shows the circuit
board 40 inside. In the following description, the left and right when the speaker 1 is viewed
from the front with the user's line of sight will be used for the description in the left and right
direction.
[0015]
As shown in FIG. 2, the head piece 10 has a substantially rectangular parallelepiped shape.
However, since the head piece 10 is integrally formed with the housing 11, the head piece 10 is
slightly narrowed upward, and the outer diameter (the length of the diagonal line) of the top
plate 102 is slightly smaller than the outer diameter of the bottom plate 103. . The head piece 10
includes an upper main body portion 101 having a sound emission port 110 and a lower skirt
106, and the main body portion 101 has a substantially cubic shape. In the bottom plate 103 of
the head piece 10, a circular opening 103A is formed at the center thereof. The aperture of the
opening 103A is substantially the same as the aperture of the speaker unit 20.
[0016]
The substantially cubic main body portion 101 has four side surfaces, of which the two side
surfaces 111 and 112 on the front side are cut out and open as a sound emission port 110. A
wall plate is provided on the back side two side surfaces 113 and 114, and serves as a back plate
104 which restricts the sound from spreading backward. Inside the main body portion 101, an
apex 105C on the lower side of the side sandwiched between the two side surfaces 113 and 114
as the back plate 104 and two side surfaces 111 and 112 as the sound emission port 110 The
reflectors 105 (105A, 105B) are formed, which are two triangular surfaces connecting with the
upper side of the. Since the main body portion 101 is substantially cubic, the left and right
surfaces 105A and 105B of the reflector 105 form an angle of about 45 degrees with respect to
the horizontal surface of the bottom plate 103 and the like.
[0017]
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As described above, the skirt 106 is formed downward around the bottom plate 103 of the head
piece 10. The height of the skirt 106 is about a quarter of the height of the entire headpiece 10.
The lower end of the skirt 106 is assembled to abut on the flange 20 A of the speaker unit 20. In
the assembled state, the speaker unit 20 and the head piece 10 share the central axis.
[0018]
The head piece 10 and the speaker unit 20 are screwed together and fixed to the housing 11.
Thus, the speaker unit 20 is attached to the upper end of the speaker box 30. The upper end of
the speaker box 30 is opened in the shape of the flange 20A of the speaker unit 20, and by
mounting the speaker unit 20 thereon, the opening is closed to form a closed space inside.
[0019]
A space 120 corresponding to the height of the skirt 106 is formed between the speaker unit 20
and the bottom plate 103 of the head piece 10. The circuit board 40 is provided in the space
120. The circuit board 40 is provided near the lower side of the front left side, that is, the open
left side surface 111, avoiding the positions of the opening portion 103A of the speaker unit 20
and the bottom plate 103. An LED 41 is provided on the circuit board 40. The LED 41 is
provided at the front center of the head piece 10, that is, at the front end of the front side. By
providing the LED 41 at this position, the user can not directly view it. Even if the user looks into
it, it can not be seen because the tabletop 102 is present.
[0020]
FIG. 5 is a view showing the traveling direction of sound propagating in the head piece 10 and
the traveling direction of light. The speaker unit 20 is installed downward and on the same
central axis of the head piece 10 and directly upwards, and the surface of the reflector 105 of the
head piece 10 is about 45 degrees, so the speaker unit 20 emits sound upward. The voiced sound
is reflected by the reflector 105 as shown by the arrow 201 in the figure and is propagated so as
to spread to the left and right diagonally forward. As a result, even if sound is emitted upward
from the speaker unit 20, it can be reflected by the reflector 105 and propagate in the front left
and right directions with little loss. In addition, since there is no need to provide a speaker grille
on the front, the design freedom on the front is also improved.
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[0021]
Further, the head piece 10 including the reflector 105 is molded of resin and is smooth but not
mirror-finished. That is, if it is a sound wave, it may be considered as regular reflection, but it is
considered that light of a short wavelength such as light is irregularly reflected. Diffuse reflection
means that incident light is reflected in all directions, and it is a phenomenon as if it appears
bright (lighting). The LEDs 41 are provided on the front side of the space 120 below the bottom
plate 103 and thus can not be seen by the user. When the LED 41 is turned on, the inside of the
headpiece 10, that is, the top plate 102, the back plate 104, and the reflector 105 are illuminated
as indicated by the arrow 202 in the figure. In particular, the reflector 105 strongly receives light
to cause irregular reflection and emits bright light (note that the arrow of the irregularly
reflected light is omitted in the figure). Thereby, the speaker 1 can produce a decorative
atmosphere as well as reproducing music.
[0022]
In addition, the speaker 1 and the headpiece 10 are not limited to the shape demonstrated above.
Modifications are free within the scope of the present invention.
[0023]
DESCRIPTION OF SYMBOLS 1 speaker (apparatus) 10 headpiece 11 housing | casing 20 speaker
unit 40 circuit board 41 LED 101 main-body part 102 top plate 103 bottom plate 103A opening
part 104 back plate 105 reflector
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