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JPWO2017002876

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
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DESCRIPTION JPWO2017002876
Abstract A speaker system which can form an optimum sound field in a wide range, can be easily
downsized (slimmed), and hardly causes deterioration of sound quality even when used for a
television. The loudspeaker system (100) comprises two loudspeakers (120) whose audio output
faces face each other. The loudspeaker system (100) comprises a diffuser (110) between the two
loudspeakers (120), which reflects the sound emitted by the two loudspeakers (120) in a specific
half-space direction.
Speaker system, display device, and television receiver
[0001]
The present invention relates to a speaker system and a display device provided with the speaker
system.
[0002]
Conventionally, in a speaker system, two direct radiation speakers are arranged in parallel
(simply arranged on the left and right sides) so that the sound output surfaces (that is, the
diaphragms constituting the speakers) face in the same direction. Are also described).
Although such a conventional speaker system can form an optimal sound field at the equal
position from each of the speakers disposed on the left and right, it is located at a position
deviated from the equal position from the two speakers. Can not form an optimal sound field.
02-05-2019
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[0003]
Therefore, recently, a speaker device (a facing arrangement type in which a pair of speaker units
whose voice output surfaces face each other and a reflecting member that reflects the sound
emitted by each speaker unit in the direction of the listener) is provided. Speaker devices have
been proposed.
[0004]
For example, Patent Document 1 discloses an omnidirectional speaker device in which the
waveguide reflects the sound emitted by the tweeter and the sound emitted by a pair of
intermediate range drivers in the circumferential direction.
In addition, Patent Document 2 discloses a low directivity speaker system (the speaker system in
FIG. 9 of Patent Document 2) in which a reflecting plate reflects the sound emitted by a pair of
speakers in a specific space in the inward direction. .
[0005]
Since these speaker devices can form an optimal sound field in a wide range of surroundings,
even when there are many listeners around, it is possible to give each listener an excellent sound
quality.
[0006]
Moreover, it can be said that the speaker system of Patent Document 2 is suitable for use as a
speaker system for television.
Even if the user arranges the speaker system of Patent Document 2 on the left and right of the
television in order to use it as a speaker system for a television and makes the speaker system
output sound, the above-mentioned pair of speakers is enclosed This is because the reflector
placed in the unit suppresses the deterioration of the sound quality due to the sound getting
around the back of the television.
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[0007]
Patent No. 5662462 gazette (issued on January 28, 2015) JP-A-2014-107751 gazette (released
on June 9, 2014)
[0008]
However, the speaker device of Patent Document 1 and the speaker system of Patent Document
2 have the following problems.
[0009]
That is, when the user arranges the speaker apparatus of Patent Document 1 to the left and right
of the television to use it as a speaker for the television, and causes the speaker apparatus to
output sound, the sound is transmitted to the back side of the television There is a problem that
the sound quality is easily degraded.
[0010]
On the other hand, in the speaker system of Patent Document 2, although the above-described
deterioration in sound quality is unlikely to occur, the reflector plate is disposed so as to
surround the pair of speaker units, which makes downsizing (slimming) difficult. There was a
problem that.
[0011]
Further, as is clear from paragraph 0010 of Patent Document 1, the speaker device of Patent
Document 1 outputs high directional 3 KHz to 8 KHz sound from both the tweeter and the
midrange driver.
Then, in the speaker device of Patent Document 1, the waveguide for reflecting the sound
emitted by the tweeter and the pair of waveguides for reflecting the sound emitted by the pair of
mid-range drivers are provided at mutually separated positions. ing.
[0012]
Therefore, the speaker device of Patent Document 1 has a problem that "some listeners may feel
uncomfortable with hearing high directivity sound of the same content from two different
02-05-2019
3
directions".
[0013]
Further, the speaker system of Patent Document 2 has a problem that it is difficult to miniaturize
(slim) since the reflection plate is disposed so as to surround the pair of speaker units.
[0014]
The present invention has been made in view of the above problems, and its main object is to (1)
be able to form an optimum sound field in a wide range, to easily achieve miniaturization
(slimming), and A speaker system which hardly causes deterioration of sound quality even when
used as a speaker system for a television is realized, and (2) a speaker group including a pair of
opposed speakers does not give a sense of discomfort to the listener A speaker system that can
be heard can be realized, (3) an optimal sound field can be formed in a wide range,
miniaturization (slimming) is possible, and sound quality can be achieved even when used as a
speaker system for a television It is to realize a speaker system in which the drop of
[0015]
In order to solve the above-mentioned subject, a speaker system concerning one mode of the
present invention is a speaker system provided with the 1st speaker and the 2nd speaker in
which the voice output side of each other is opposite, Between the first speaker and the second
speaker, the first speaker and a diffuser reflecting the sound emitted by the second speaker, said
And the sound emitted by the second speaker.
[0016]
In order to solve the above-mentioned subject, a speaker system concerning one mode of the
present invention is a speaker system provided with the 1st speaker which the voice output side
of each other has opposed, and the 2nd speaker. And a second speaker, the first speaker and a
diffuser reflecting the sound emitted from the second speaker, and the diffuser includes a third
speaker.
[0017]
In order to solve the above-mentioned subject, the speaker system concerning one mode of the
present invention is provided with the 1st speaker and the 2nd speaker in which the voice output
side of each other is opposite, and the 1st speaker enters. A wall-like connecting member is
provided between the first enclosure portion and the second enclosure portion containing the
second speaker, for connecting the first enclosure portion and the second enclosure portion.
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[0018]
In the speaker system according to one aspect of the present invention, an optimum sound field
can be formed in a wide range, miniaturization (slimming) is easy to achieve, and deterioration in
sound quality occurs even when used as a speaker system for television It has the advantage of
being difficult.
[0019]
Furthermore, according to one aspect of the present invention, it is possible to listen to the sound
emitted by the speaker group including the pair of oppositely disposed speakers without giving a
sense of discomfort to the listener.
[0020]
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a set of a plan view, a right side view, a left
side view, and a front view of a speaker system according to Embodiments 1 and 2 of the present
invention.
It is a perspective view of a speaker system concerning Embodiments 1 and 2 of the present
invention.
It is another perspective view of the speaker system which concerns on Embodiment 1, 2 of this
invention.
It is a six-sided figure showing the diffuser with which the speaker system which concerns on
Embodiment 1, 2 of this invention is provided.
It is a perspective view of a diffuser with which a speaker system concerning Embodiments 1 and
2 of the present invention is provided.
It is various sectional drawings of the diffuser with which the speaker system which concerns on
Embodiment 1, 2 of this invention is provided.
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The figure for demonstrating the positional relationship of two speaker systems and the housing
of a display panel in the television receiver in which the speaker system which concerns on
Embodiment 1, 2 of this invention was provided in the right and left of the housing of a display
panel. It is.
It is a figure for demonstrating the structure of the diffuser periphery in the speaker system
which concerns on various embodiment of this invention.
It is a figure which shows roughly the external appearance of the speaker system which concerns
on another embodiment of this invention.
It is a figure which shows roughly the external appearance of the speaker system which concerns
on another embodiment of this invention.
It is a figure for demonstrating the directivity of a speaker system.
It is a schematic block diagram of a drive control unit of the speaker system shown in FIG. It is a
figure which shows the correspondence of a source genre and the output ratio of each speaker.
[0021]
Embodiment 1 Hereinafter, a speaker system according to the present embodiment and a
television receiver according to the present embodiment in which such a speaker system is
provided on the left and right (surroundings) of the display screen will be described with
reference to the drawings. explain.
[0022]
(Configuration of Speaker System) First, the configuration of the speaker system according to the
present embodiment will be described with reference to FIGS. 1 to 3.
[0023]
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FIG. 1 is a set of a plan view, a right side view, a left side view, and a front view of a speaker
system 100 according to the present embodiment.
Specifically, (a) of FIG. 1 shows a plan view of the speaker system 100, and (b) and (d) of FIG. 1
show the left and right side views of the speaker system 100. 2C shows a front view of the
speaker system 100. FIG.
[0024]
2 and 3 are perspective views of the speaker system 100. FIG.
In addition, O in (a) of FIG. 2 is an XYZ space coordinate system shown in (b) of FIG. 1 (a space
coordinate system in which an X axis, an Y axis, and a Z axis orthogonal to each other are
defined) Indicates the position of the origin in
[0025]
As can be seen from FIGS. 1 to 3, in the speaker system 100, the audio output surfaces (the audio
output surface 121A of the first speaker 120A and the audio output surface 121B of the second
speaker 120B) face each other. Two speakers 120 (a first speaker 120A and a second speaker
120B) are provided.
[0026]
The two speakers 120 are speaker units connected to the same amplifier (not shown) and
emitting the same sound.
In the present embodiment, the two speakers 120 are mid-bass output speakers (mid-bus
speakers), but the two speakers 120 are other types of speakers (for example, a tweeter, a
squawker, a mid-high speaker, etc.) It is also good.
[0027]
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The speaker system 100 includes a diffuser (acoustic diffuser) 110 that reflects the sound
emitted by the first speaker 120A and the sound emitted by the second speaker 120B in a
specific half space inward direction. Here, the specific half space specifically refers to a half
space consisting of an infinite number of coordinates such that the Y coordinate value in the XYZ
space coordinate system is positive.
[0028]
As can be seen from (b) of FIG. 1, in the space represented by the XYZ space coordinate system
(in the space where the position in the space is represented by the coordinate value of the XYZ
space coordinate system), the first speaker 120A, The two speakers 120B and the diffuser 110
are juxtaposed in the order of the first speaker 120A, the diffuser 110, and the second speaker
120B along the Z-axis (first axis).
[0029]
In addition, the speaker system 100 includes two enclosure units 130 (a first enclosure unit
130A containing the first speaker 120A, and a second enclosure unit 130B containing the
second speaker 120B). There is.
As can be seen from (b), (d) of FIG. 1 and (a) of FIG. 2, the speaker system 100 comprises a first
enclosure portion 130A and a second enclosure portion 130B between two enclosure portions
130. And a wall-like (in the present embodiment, a U-shaped) connecting member 140 for
connecting the two.
[0030]
The diffuser 110 is attached to the connecting member 140.
[0031]
A sound absorbing material may be attached to the inner side of the U-shaped connecting
member 140, or all or part of the connecting member 140 may be made of a sound absorbing
material.
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[0032]
Hereinafter, the structure of the diffuser 110 will be further described in detail with reference to
FIGS. 4 to 6.
[0033]
FIG. 4 is a six-sided view showing the diffuser 110 provided in the speaker system 100. As shown
in FIG.
[0034]
Specifically, (a), (b) and (c) in FIG. 4 respectively show a plan view, a right side view and a front
view.
(D), (e) and (f) of FIG. 4 show a left side view, a rear view and a bottom view, respectively.
[0035]
FIG. 5 is a perspective view of the diffuser 110.
6 is various cross-sectional views of the diffuser 110. As shown in FIG.
[0036]
Specifically, (a) and (b) of FIG. 6 are a cross-sectional view taken along the line A-A 'and a crosssectional view taken along the line A-A', respectively.
(C) and (d) of FIG. 6 are a B-B 'line sectional view and a B-B' line sectional view, respectively.
(E) and (f) of FIG. 6 are a C-C 'line sectional view and a C-C' line sectional view, respectively.
02-05-2019
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[0037]
As can be seen from FIGS. 1, 4 and 5, the diffuser 110 exhibits a plane-symmetrical (substantially
plane-symmetrical) shape with the XY plane (plane perpendicular to the first axis) as the plane of
symmetry. As can be seen from FIGS. 1 and 3, the symmetry plane is a plane in which the
distance from the audio output surface 121A of the first speaker 120A and the distance from the
audio output surface 121B of the second speaker 120B are substantially equal. The abovementioned plane of symmetry may be a plane in which both distances are completely equal.
Further, the diffuser 110 may have a completely plane-symmetrical shape with the XY plane
(plane perpendicular to the first axis) as a plane of symmetry.
[0038]
In addition, as can be seen from FIGS. 4 to 6, the diffuser 110 is provided with a speaker 112.
Specifically, as can be seen from FIG. 1, the diffuser 110 is provided with a speaker 112 at a
position straddling the plane of symmetry. More specifically, the diffuser 110 includes a speaker
112 in which the center of the sound output surface is located in the above-mentioned plane of
symmetry.
[0039]
The audio output surface of the speaker 112 is directed in a direction parallel to the XY plane in
the specific half space.
[0040]
Although the speaker 112 according to the present embodiment is a high-tone output speaker
(tweeter) connected to an amplifier different from the above-described amplifier, the speaker 112
is a speaker of another type (for example, a mid-bus speaker or the like). It may be a squawker, a
mid high speaker, etc.).
[0041]
Further, as shown in FIG. 4B, two reflective surfaces 111 are provided.
[0042]
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One of the two reflecting surfaces 111 is one of the two quarters of space obtained by dividing
the specific half space from the sound emitted from the first speaker 120A. It reflects in one
space direction.
Here, one quarter space refers to a space consisting of an infinite number of coordinates in which
the Y coordinate value and the Z coordinate value are positive in the XYZ space coordinate
system.
[0043]
The other reflective surface 111 of the two reflective surfaces 111 reflects the sound emitted by
the second speaker 120B in the other quarter of the two quarters of the space.
Here, the other quarter space refers to a space consisting of an infinite number of coordinates in
which the Y coordinate value is positive and the Z coordinate value is negative in the XYZ space
coordinate system. There is.
[0044]
In other words, the values of the Y-axis component (second axis component) of the normal vector
at all positions on all the reflection surfaces (two reflection surfaces 111) of the diffuser 110 are
positive and negative.
Specifically, the value of the Y-axis component of the normal vector at any position is a positive
value.
[0045]
(Television Receiver) Hereinafter, a television receiver (display device) in which the speaker
system 100 is provided will be described with reference to FIG.
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11
[0046]
FIG. 7 is a diagram for explaining the positional relationship between the two speaker systems
100 and the housing of the display panel 200 in such a television receiver 1.
[0047]
Note that FIG. 7 is a diagram for describing the positional relationship, and thus the external
appearance of the housing of the display panel 200 and the external appearance of the speaker
system 100 are not accurately shown.
Moreover, in FIG. 7, illustration of the diffuser 110 and the speaker 120 is also abbreviate |
omitted.
[0048]
As shown in FIG. 7, the two speaker systems 100 are disposed on the left and right of the
housing of the display panel 200.
Specifically, in the two speaker systems 100, the back surface of each speaker system 100 (the
surface formed by the back surface of the two enclosures 130 and the wall surface of the
connecting member 140) is flush with the back surface of the display panel 200. It is arranged to
become.
[0049]
(Acoustic Advantages of Television Receiver 1) The acoustic advantages of the television receiver
1 will be described below.
[0050]
Since the two speakers 120 are opposite speakers whose voice output surfaces face each other, a
viewer at any position in the specific half space can listen to program sound with excellent sound
quality.
02-05-2019
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[0051]
Further, as is apparent from the above description, since the speaker 112 is provided in the
diffuser 110, the viewer can hear the sound emitted by the two speakers 120 (sound reflected by
the diffuser 110) and the sound emitted by the speaker 112. And in the same direction.
[0052]
Therefore, the viewer can listen to the program sound without feeling discomfort.
[0053]
Furthermore, as described above, the diffuser 110 reflects the sound emitted by the two speakers
120 in a specific half space direction (direction of the half space where the viewer of the
program is present) and the other half space inward direction. It does not reflect in the direction
of the half space where there are no viewers of the program.
That is, the sound emitted from the two speakers 120 is not reflected to the back side of the
television receiver 1.
[0054]
Further, as described above, the speaker system 100 is provided with the wall-like connecting
member 140.
The wall-like connecting member 140 suppresses the sound emitted from the two speakers 120
from coming around to the back side of the television receiver 1 by the diffraction phenomenon.
[0055]
Furthermore, the back surface of the speaker system 100 (the back surface of the wall-like
connecting member 140) and the back surface of the housing of the display panel 200 may be
flush with each other, and the sound emitted by the two speakers 120 may be television
reception It contributes to preventing the wraparound to the back side of the machine 1.
02-05-2019
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[0056]
As described above, even when the television receiver 1 is installed such that the back surface of
the television receiver 1 approaches the wall of the room, the sound emitted from the two
speakers 120 is a television receiver It is difficult to get into the gap between the back of
machine 1 and the wall of the room.
Therefore, the program sound listened to by the viewer is less likely to be a sound of uttered
sound.
[0057]
Therefore, a viewer at any position in the specific half space can listen to program sound of very
clear sound quality.
[0058]
(Advantages of Speaker System 100) As can be understood from the above description, the
speaker system 100 can be said to be a speaker device that exhibits an excellent acoustic effect
by being used as a component of the television receiver 1.
[0059]
Furthermore, since the wall-like connecting member 140 and the diffuser 110 are disposed along
the Z-axis in which the two speakers 120 are arranged, the speaker system 100 having a shape
in which the Z-axis direction is the longitudinal direction is used. There is also the advantage that
it is easy to achieve miniaturization (slimming).
[0060]
(Additional remark matter 1) The display apparatus which concerns on this invention is not
limited to the television receiver 1. FIG.
For example, a display for a desktop PC having the same features as the television receiver 1 is
also included in the scope of the display device according to the present invention.
02-05-2019
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[0061]
(Appendix 2) The audio output surfaces of the two speakers 112 of the television receiver 1 are
directed to the display panel 200 side with a slight angle (for example, 18 °) from the normal
direction of the display panel 200. It is also good.
Thereby, a position separated from the television receiver 1 by a distance generally considered
appropriate (for example, a distance corresponding to three times the length in the vertical
direction of the display screen) in the front direction of the television receiver 1 Viewers who are
in can hear clear highs.
[0062]
Embodiment 2 Another embodiment of the present invention will be described with reference to
FIG. 8 as follows.
In addition, about the member which has the same function as the member demonstrated in the
said embodiment for convenience of explanation, the same code | symbol is appended and the
description is abbreviate | omitted.
[0063]
FIG. 8 is a diagram illustrating the structure around a diffuser in a speaker system according to
various embodiments of the present invention.
[0064]
(A) of FIG. 8 is a view showing a cross section of the DD ′ line cutting portion of the speaker
system according to the first embodiment, and (b) of FIG. 8 is a D− line of the speaker system
according to the present embodiment. It is the figure which showed the cross section of D 'line
cutting part.
[0065]
The speaker system and the television receiver according to the present embodiment are
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15
different from the speaker system 100 and the television receiver 1 according to the first
embodiment in the following points.
[0066]
That is, in the first embodiment, as shown in (a) of FIG. 8, a space (a square (X-axis positive
direction, X-axis negative direction perpendicular to the Z axis) is , A space surrounded by the
connecting member 140 in three directions (X-axis positive direction, X-axis negative direction
and Y-axis negative direction) of Y-axis positive direction and Y-axis negative direction). On the
other hand, in the present embodiment, as shown in FIG. 8B, the space inside the U-shape in the
connecting member 140 is filled with the filling member 4 (for example, a plate) for eliminating
the space.
[0067]
Except for the above points, the speaker system and the television receiver according to the
present embodiment are configured in the same manner as the speaker system 100 and the
television receiver 1 according to the first embodiment, respectively.
[0068]
In the speaker system and the television receiver according to the present embodiment, by
providing the filling member 4, the sound quality deterioration due to the sound emitted from
the two speakers 120 entering the U-shaped space in the connecting member 140 is reduced.
There is a further effect that it does not occur.
[0069]
Preferably, the filling member 4 is made of a sound absorbing material.
If the filling member 4 is made of a sound absorbing material, the viewer listens to the sound
emitted by the two speakers 120 from the two members 120, which is intended to wrap around
on the back side of the television receiver 1. This is because the program sound is less likely to
be a sound that sounds like it has been heard.
[0070]
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16
Third Embodiment Still another embodiment of the present invention will be described below
with reference to FIG. 8 and other drawings.
In addition, about the member which has the same function as the member demonstrated in the
said embodiment for convenience of explanation, the same code | symbol is appended and the
description is abbreviate | omitted.
[0071]
(C)-(e) of FIG. 8 illustrate the cross section (cross section cut in a plane perpendicular to the
longitudinal direction of the connection member 140) of the cut portion of the connection
member 140 and the diffuser 110 'of the speaker system according to this embodiment. doing.
[0072]
The speaker system and the television receiver according to the present embodiment are
different from the speaker system 100 and the television receiver 1 according to the first and
second embodiments only in the following points.
[0073]
That is, in the first and second embodiments, as shown in (c) to (f) of FIG. 6, the outer edge
(outline) of the cross section obtained by cutting the diffuser 110 at the XY plane exhibits a
shape close to a semicircle. On the other hand, in the present embodiment, as shown in (c) of FIG.
8, the outer edge (contour) of the cross section of the diffuser 110 ′ cut in a plane
perpendicular to the longitudinal direction of the connecting member 140 exhibits a
circumferential shape. ing.
[0074]
In the speaker system and the television receiver according to the present embodiment, as in the
first embodiment (that is, as shown in FIG. 8C), the space inside the U-shape in the connecting
member 140 is eliminated. The filling member 4 may not be filled.
Alternatively, in the speaker system and the television receiver according to the present
embodiment, as in the second embodiment (that is, as shown in (d) of FIG. 8), the filling member
02-05-2019
17
4 for eliminating the space is It may be filled.
[0075]
In the latter case, the deterioration of the sound quality due to the sound emitted from the two
speakers 120 entering the space inside the U-shape in the connecting member 140 does not
occur.
[0076]
As can be seen from FIG. 8 (d), in the latter speaker system and television receiver, the speaker
surrounded on three sides by the connecting member 140 filled with the filling member 4 and
the diffuser 110 ' A space not visible from the front of the system is formed near the two
speakers 120.
[0077]
In order to avoid the deterioration of the sound quality due to the sound emitted by the two
speakers 120 entering this space, this space is filled with another filling member 4 'as shown in
(e) of FIG. In the diffuser 110 ', a filler metal may be used to eliminate the
[0078]
Fourth Embodiment Another embodiment of the present invention will be described with
continued reference to FIG.
[0079]
(F) of FIG. 8 shows a cross section (a cross section cut along a plane perpendicular to the
longitudinal direction of the connecting member 140) of a cut portion of the connecting member
140 of the speaker system according to an embodiment of the present invention. 4G shows a
cross section (a cross section cut in a plane perpendicular to the longitudinal direction of the
connecting member 140) of a cut portion of the connecting member 140 of the speaker system
according to another embodiment of the present invention.
[0080]
As can be seen from (f) and (g) in FIG. 8, the wall-shaped connecting member is not limited to the
U-shaped connecting member 140.
02-05-2019
18
[0081]
That is, the wall-like connecting member may be a connecting member 140A having an I-shaped
cross section as shown in FIG. 8 (f), as shown in FIG. 8 (g). The connecting member 140B may be
L-shaped in cross section.
[0082]
In addition, a television receiver including the following four speaker systems 100 and a super
large display panel is also included in the scope of the display device according to the present
invention.
The speaker system 100 provided on the left side of the display panel such that the longitudinal
direction is parallel to the vertical direction of the display panel and the height of one end in the
longitudinal direction matches the height of the upper end of the display panel Speaker system
100)-A speaker provided on the left side of the display panel so that the longitudinal direction is
parallel to the vertical direction of the display panel and the height of one end in the longitudinal
direction matches the height of the lower end of the display panel System 100 (second speaker
system 100) The right side of the display panel so that the longitudinal direction is parallel to the
vertical direction of the display panel, and the height of one end in the longitudinal direction
matches the height of the upper end of the display panel Speaker system 100 (third speaker
system 100) provided in each of the longitudinal direction parallel to the vertical direction of the
display panel, and the height of one end in the longitudinal direction The speaker system 100
(fourth speaker system 100) provided on the right side of the display panel so as to match the
height of the lower end of the panel Note that each of the speakers 112 of the first speaker
system 100 and the third speaker system 100 It is desirable that the voice output surface is
directed in a direction (a direction not parallel to the XY plane) in a half space consisting of an
infinite number of coordinates in which the Z coordinate value in the XYZ space coordinate
system is negative.
In addition, it is desirable that the sound output surfaces of the speakers 112 of the second
speaker system 100 and the fourth speaker system 100 face a direction (a direction not parallel
to the XY plane) in the other half space.
[0083]
Even when using the television receiver in a viewing environment in which the viewer is in each
of the front direction, the elevation angle direction, and the depression angle direction of the
02-05-2019
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display panel, each viewer can clearly make the sound from the speaker 112 clear. It is because it
can hear.
[0084]
Also, for the same reason, the diffuser 110 of each of the four speaker systems 100 may be
configured as follows.
[0085]
That is, the diffusers 110 of the first speaker system 100 and the third speaker system 100 have
a strong inclination of the upper reflecting surface 111 with respect to a plane parallel to the XY
plane, and the lower reflecting surface 111 with respect to the eye parallel to the XY plane. It
may be formed to weaken the slope of.
[0086]
In other words, the angle formed by the plane parallel to the XY plane and the upper reflecting
surface 111 may be large, and the angle formed by the plane parallel to the XY plane and the
lower reflecting surface 111 may be small.
For example, the former angle may be greater than 45 ° and the latter angle may be less than
45 °.
[0087]
Thereby, the space located in the front direction or the depression angle direction of the display
panel of the sound emitted by the two speakers 120 of the first speaker system 100 and the
sound emitted by the two speakers 120 of the third speaker system 100 The sound pressure
level at will increase.
[0088]
Similarly, in the diffusers 110 of the second speaker system 100 and the fourth speaker system
100, the inclination of the upper reflecting surface 111 with respect to the plane parallel to the
XY plane is weak, and the inclination of the lower reflecting surface 111 with respect to the
plane is It may be formed to be strong.
02-05-2019
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[0089]
In other words, the angle formed by the plane parallel to the XY plane and the upper reflecting
surface 111 may be small, and the angle formed by the plane parallel to the XY plane and the
lower reflecting surface 111 may be large.
For example, the former angle may be less than 45 °, and the latter angle may be greater than
45 °.
[0090]
Thereby, the space located in the front direction or the elevation angle direction of the display
panel of the sound emitted by the two speakers 120 of the second speaker system 100 and the
sound emitted by the two speakers 120 of the fourth speaker system 100 The sound pressure
level at will increase.
[0091]
Fifth Embodiment Another variation of the speaker system and the display device according to
the present invention will be described with reference to FIG.
[0092]
FIG. 9 is a view schematically showing the appearance of a speaker system 100 'according to still
another embodiment of the present invention.
[0093]
The scope of the loudspeaker system according to the invention includes a loudspeaker system
with a diffuser of any shape.
[0094]
For example, the scope of the loudspeaker system according to the present invention includes the
loudspeaker system shown in FIG.
02-05-2019
21
That is, a speaker system 100 ′ having a diffuser 110B that reflects the sound emitted by the
first speaker 120A and the second speaker 120B in the entire circumferential direction instead of
in the specific half space direction is also a speaker system according to the present invention. It
is included in the range.
[0095]
Moreover, the television receiver provided with the speaker system 100 'is also included in the
range of the display apparatus based on this invention.
[0096]
Although the speaker system and the television receiver of each embodiment are provided with a
diffuser including the speaker 112, the present invention is not limited to such a configuration.
That is, the speaker system and the television receiver according to each embodiment may be
provided with a diffuser that does not include the speaker 112.
[0097]
Sixth Embodiment Still another embodiment of the present invention will be described below.
In addition, about the member which has the same function as the member demonstrated by the
said each embodiment for convenience of explanation, the same code | symbol is appended and
the description is abbreviate | omitted.
[0098]
(Structure of Speaker System) FIG. 10 is a view schematically showing an appearance of a
speaker system according to still another embodiment of the present invention.
02-05-2019
22
The loudspeaker system 300 shown in FIG. 10 is substantially the same as the external
appearance of the loudspeaker system 100 ′ shown in FIG. 9 of the fifth embodiment except
that the diffuser 110 B is provided with a third loudspeaker 150.
[0099]
The first speaker 120A and the second speaker 120B are speakers for medium-bass output
connected to an amplifier (first speaker driving unit 313: FIG. 12), and the third speaker 150 is a
first speaker 120A. The speaker connected to the second speaker 120B is connected to an
amplifier (second speaker driver 314: FIG. 12) that is different from the amplifier connected to
the second speaker 120B.
[0100]
In the present embodiment, mid-bus speakers are used as the first speaker 120A and the second
speaker 120B, and a squawker is used as the third speaker 150.
Note that the first speaker 120A and the second speaker 120B are not limited to mid-bus
speakers, and may be speakers for mid-bass output having directivity of a sound field-oriented
type.
Further, the third speaker 150 is not limited to a squawker, and may be a speaker for middle-tohigh sound output having sound image-oriented directivity.
[0101]
In the speaker system 300, a part of the sound range which the first speaker 120A and the
second speaker 120B take charge of is made lower than the sound range which the third speaker
150 takes charge of.
[0102]
The sound emitted from the first speaker 120A and the second speaker 120B is reflected in the
entire circumferential direction by the diffuser 110B, so that the sound spreads around including
the space where the listener is present .
02-05-2019
23
[0103]
On the other hand, the sound output surface of the third speaker 150 is provided in the diffuser
110B so as to face the space in which the listener is present.
As a result, the sound emitted by the third speaker 150 has high directivity and is directed to the
direction in which the listener is present, so the listener can easily hear it.
That is, since the sound emitted by the third speaker 150 is a sound in the middle to high range,
for example, the same range as the voice of the announcer who reads the news, the listener can
easily hear the announcer's voice.
[0104]
(Directivity of Speaker System) FIG. 11 is a diagram for explaining the directivity of the speaker
system, in which (a) shows sound image-oriented directivity and (b) shows sound field-oriented
directivity. .
Here, the directivity of sound image emphasis type shown in (a) of FIG. 11 shows the directivity
of a general speaker system, and the directivity of emphasis on sound field shown in (b) of FIG.
11 shows the implementation of the present invention. 15 shows directivity of the speaker
system described in the first to fifth aspects.
[0105]
The merits and demerits of sound image-oriented directivity and sound-field-oriented directivity
will be described.
[0106]
As shown in FIG. 11, consider a case where two speaker systems 300 are arranged at a
predetermined interval, and the listener X is at a position separated from the center by a
predetermined distance.
02-05-2019
24
[0107]
First, in sound image-oriented directivity, the sound of Lch (left channel) of stereo sound output
from the two speaker systems 300 is almost to the left ear of listener X and the sound of Rch
(right channel) to most of listeners Get into the right ear of X.
As described above, sound image-oriented directivity does not require much sound spreading,
and is suitable when the voice of a person such as news is main, while it is more than the
arrangement interval of the speaker system 300 in live sound source or movie When the listener
X is slightly deviated from the viewing position to the left or right, the sound on one side
becomes dominant, and no stereo feeling can be obtained.
[0108]
On the other hand, in the directivity based on the sound field, the sound of both channels of the
stereo sound output from the two speaker systems 300 enters the left ear and the right ear of the
listener X.
As described above, since the sound of both channels enters the listener's ears and the sense of
spreading of the sound more than the arrangement interval of the speaker system 300 can be
obtained, a live sound source, a movie, etc. which needs the sense of the spread of the sound It is
suitable for viewing, and although the sense of stereo is not impaired even if the listener X
deviates somewhat from the viewing position, the sound spreads too much and it is difficult to
hear the voice of the person. Not very suitable.
[0109]
That is, the directivity based on the sound image and the directivity based on the sound field
have opposite merits and demerits.
Therefore, the speaker system 300 according to the present embodiment has the merits of both
sound image-oriented directivity and sound field-oriented directivity, so that the type of audio to
be output, that is, the source of audio data to be output (news (A) of FIG. 11 and the directivity of
02-05-2019
25
the sound field emphasis type shown in (b) of FIG.
The switching control between the sound image-oriented directivity and the sound field-oriented
directivity in the speaker system 300 will be described below.
[0110]
(Drive Control of Speaker System) FIG. 12 is a schematic block diagram of a drive control unit
310 that controls the drive of the speaker system 300. As shown in FIG.
[0111]
The drive control unit 310 uses the determination unit 311 that determines the type of audio to
be output (source of audio data) from the input audio data, and the determination result of the
determination unit 311, the first speaker 120A and the second speaker 120A. The output control
unit 312 controls the ratio of the output by the speaker 120B to the output by the third speaker
150, and the output corresponding to the ratio controlled by the output control unit 312 is the
first speaker 120A and the second speaker 120A. It includes a first speaker driving unit 313
given to the speaker 120 B, and a second speaker driving unit 314 giving a third speaker 150 an
output according to the ratio controlled by the output control unit 312.
[0112]
FIG. 13 is a table showing the relationship between the type of audio data source (source genre),
the output ratio of the first speaker and the second speaker, and the output ratio of the third
speaker.
[0113]
The output control unit 312 specifies the source genre of the audio data from the determination
result from the determination unit 311, and the output ratio of the first speaker and the second
speaker with reference to the table shown in FIG. And the output ratio of the third speaker, and
the control signal of each of the first speaker, the second speaker and the third speaker is
generated from the determined output ratio, and the first speaker driving unit 313 and the
second speaker are generated. It outputs to each drive part 314. FIG.
[0114]
The first speaker driving unit 313 drives the first speaker 120A and the second speaker 120B
based on the received control signal, and the second speaker driving unit 314 drives the third
02-05-2019
26
speaker 150 based on the received control signal. Do.
[0115]
For example, if the source genre is news / news, as shown in FIG. 13, the output ratio of the first
speaker to the second speaker is 0, and the output ratio of the third speaker is 100.
In this case, no sound is emitted from the first and second speakers, and the sound is emitted
only from the third speaker, so that the directivity of the sound image emphasis type shown in (a)
of FIG. Makes it easy to hear the voice of the announcer reading the news.
On the other hand, if the source genre is music, the output ratio of the first speaker to the second
speaker is 100, and the output ratio of the third speaker is 0.
In this case, the sound is emitted only from the first speaker and the second speaker, and no
sound is emitted from the third speaker, so that the directivity of the sound field emphasis type
shown in (b) of FIG. You can feel the spread of the sound and get a feeling of live.
[0116]
Further, if the source genre is variety, it is necessary to spread the sound to some extent, so the
output ratio of the first speaker to the second speaker is 20, and the output ratio of the third
speaker is 80, as shown in FIG. The directivity of the sound image emphasis type shown in a) is
obtained.
[0117]
Furthermore, if the source genre is a movie, it is necessary to spread the sound, but it is also
necessary to listen to the audio, so the output ratio of the first speaker to the second speaker is
70, and the output ratio of the third speaker is 30 and has directivity of the sound field emphasis
type shown in (a) of FIG.
[0118]
Similarly in the other source genres, the directivity of the sound emitted by the speaker system
300 is determined by the output ratio of the first speaker and the second speaker set in advance
02-05-2019
27
and the output ratio of the third speaker.
[0119]
As described above, in the speaker system 300, the drive control unit 310 is used to distribute
the output ratio of each speaker according to the source genre, thereby selecting the directivity
based on the sound field and the directivity based on the sound image. be able to.
Thus, if the specified source genre is a voice main source, the output ratio from the third speaker
is increased, and if the specified source genre is a source for enjoying a sense of reality, the first
By increasing the output ratio of the speaker and the second speaker, it is possible to obtain a
sound field sound image suitable for the source genre, so it is possible to always hear the sound
of any source genre without giving a sense of discomfort to the listener It becomes.
[0120]
In addition, distribution of the output ratio of each speaker according to a source genre is not
limited to performing automatically by the drive control part 310 as mentioned above, A user
(listener) himself operation panel (figure (Not shown) may be operated.
[0121]
Further, in the speaker system 300 according to the present embodiment, an example provided
with the diffuser 110B that reflects the sound emitted from the first speaker 120A and the
second speaker 120B not in the specific half space direction but in the entire circumferential
direction Although it demonstrated, it is not limited to this, You may use the diffuser 110
reflected in the specific half space direction used in the said Embodiment 1 grade | etc.,.
In this case, the high sound output speaker 112 provided in the diffuser 110 shown in FIG. 4 of
the first embodiment may be replaced with the third high sound output speaker 150 described in
the present embodiment.
[0122]
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28
(Television Receiver) The speaker system 300 according to the present embodiment can be
replaced with the speaker system 100 provided in the television receiver (display device) shown
in FIG. It may be used as a speaker system.
In this case, since the sound emitted from the speaker system 300 has directivity suitable for the
source genre to be viewed on the television receiver, the sound of any source genre may be
heard without always giving a sense of discomfort to the viewer. it can.
[0123]
Although the speaker system and the television receiver of each embodiment are provided with a
wall-shaped connecting member as a connecting member for connecting the first enclosure
portion 130A and the second enclosure portion 130B, the present invention Is not limited to
such a configuration.
That is, the connecting member may be, for example, an elongated rod-like member having a
circular cross section.
[0124]
[Summary] The speaker system (speaker system 100) according to aspect 1 of the present
invention includes the first speaker (the first speaker 120A) and the first speaker (the first
speaker 120A) in which the audio output surfaces (audio output surfaces 121A and 121B) face
each other. A speaker system including two speakers (second speaker 120B), which is provided
between the first speaker and the second speaker, and reflects the sound emitted from the first
speaker and the second speaker A diffuser (diffuser 110), which reflects the sound emitted by
the first speaker and the second speaker in a specific half space inward direction.
[0125]
According to the above configuration, in the above speaker system, since the facing speakers
emit sound, the above speaker system can form an optimum sound field in a wide range.
[0126]
According to the above configuration, the sound emitted from the first speaker and the second
02-05-2019
29
speaker is reflected in the specific half space direction, but not in the other half space direction.
[0127]
That is, when the above speaker system is used as a speaker system for a television, the speaker
system is such that the space in front of the television is in the specific half space and the space
in the rear of the television is in the other half space. The sound emitted from the first and
second speakers is not reflected to the back of the television.
[0128]
Therefore, it can be said that the above-mentioned speaker system has an advantage that "even if
it is used as a speaker system for a television, deterioration of the sound quality due to the sound
entering the back side of the television hardly occurs".
[0129]
In addition, since the diffuser is provided between the first speaker and the second speaker, the
above-described speaker system also has the advantage of being easy to achieve miniaturization
(slimming) as compared with the conventional speaker system. It can be said that there is.
[0130]
In the speaker system according to aspect 2 of the present invention, in the above-mentioned
aspect 1, it is a space coordinate system in which a first axis (Z axis), a second axis (Y axis) and a
third axis (X axis) orthogonal to each other are defined. In the space to be represented, a first
speaker, a second speaker and the diffuser are juxtaposed in the order of the first speaker, the
diffuser and the second speaker along a first axis, the diffuser The value of the second axis
component of the normal vector at all positions on all the reflecting surfaces of may have the
same value in positive and negative.
[0131]
In the speaker system according to aspect 3 of the present invention, in the above aspect 2, the
diffuser has a plane-symmetrical shape (approximately or completely plane-symmetrical shape)
with the plane (XY plane) perpendicular to the first axis as the plane of symmetry. May be
presented.
[0132]
02-05-2019
30
Here, the specific half space refers to the following half space of two half spaces obtained by
dividing the space (entire space) by a plane including the first axis and the third axis.
When the value of the second axis component of the normal vector at all positions on all
reflective surfaces of the diffuser is positive: A half space consisting of an infinite number of
coordinates such that the value of the second axis component is positive When the value of the
second axis component of the normal vector at all positions on all the reflecting surfaces of is
negative: a half space consisting of innumerable coordinates such that the value of the second
axis component is negative According to the present invention, the sound pressure distribution of
the sound from the first speaker in one quarter space of one of the two quarter spaces obtained
by dividing the specific half space by the symmetry plane, The sound pressure distribution of the
sound from the second speaker in the other quarter space of the half space is the same.
[0133]
Thus, the speaker system can be used to set the viewer's position when standing up or sitting
down (i.e., within one quarter of the viewer's ear (e.g., below the plane of symmetry) from the
other quarter). Even in one space (for example, when moving to a position higher than the abovementioned plane of symmetry), there is a further effect that the sound emitted by the speaker
system does not give the viewer a sense of discomfort.
[0134]
The speaker system (speaker system 100) according to aspect 4 of the present invention includes
a first speaker (first speaker 120A) and a second speaker in which the audio output surfaces
(audio output surfaces 121A and 121B) of each other face each other. A speaker system
including the (second speaker 120B), comprising: a diffuser (diffuser 110) for reflecting the
sound emitted from the first speaker and the second speaker; and a first axis (Z axis) orthogonal
to each other In a space represented by the space coordinate system in which the second axis (Y
axis) and the third axis (X axis) are defined, the first speaker, the second speaker, and the The
first speaker, the diffuser, and the second speaker are juxtaposed in this order, and normal
vectors at all positions on all reflective surfaces of the diffuser. The value of the second shaft
component, polarity have the same value.
[0135]
According to said structure, the said speaker system has an effect similar to the speaker system
which concerns on the said aspect 1.
02-05-2019
31
[0136]
A display device (television receiver 1) according to aspect 5 of the present invention includes
the speaker system according to any one of aspects 1 to 4 and a display panel (display panel
200).
[0137]
According to the above configuration, an optimum sound field can be formed in a wide range in
the display device, and miniaturization (thinning) can be easily achieved, and sound quality
caused by the sound entering the back side of the own device. It has the advantage of being less
likely to cause
[0138]
The speaker system (speaker systems 100 and 300) according to aspect 6 of the present
invention includes a first speaker (first speaker 120A) and a second speaker (a first speaker
120A) in which the audio output surfaces (audio output surfaces 121A and 121B) face each
other. Speaker system including the second speaker (second speaker 120B), provided between
the first speaker and the second speaker, and a diffuser that reflects the sound emitted from the
first speaker and the second speaker A diffuser 110, a diffuser 110B) are provided, and the
diffuser is provided with a third speaker (speaker 112, third speaker 150).
[0139]
According to the above configuration, since the diffuser reflects the sound emitted by the pair of
opposed speakers (the first speaker and the second speaker), the listener can recognize the pair
of opposed speakers. The sound emitted by the speaker is perceived in the direction of the
diffuser.
[0140]
In addition, since the diffuser is provided with the third speaker, the listener perceives the sound
emitted by the third speaker in the direction of the diffuser.
[0141]
Then, since the listener perceives the sounds emitted by the three speakers (speaker group)
including the pair of oppositely arranged speakers in the same direction, "the sound with high
directivity of the same content from two different directions is There is no "uncomfortable
feeling".
02-05-2019
32
[0142]
Therefore, the above-mentioned speaker system has an effect that the sound emitted by three
speakers (speaker group) including a pair of speakers arranged opposite to each other can be
heard without giving a sense of discomfort to the listener.
[0143]
In addition, since the diffuser is provided between the first speaker and the second speaker, the
above-described speaker system also has an advantage of being easy to achieve downsizing
(slimming) as compared with the conventional speaker system. It can be said that there is.
[0144]
In the speaker system according to aspect 7 of the present invention, in the above-mentioned
aspect 6, a part of the sound range in which the first speaker (first speaker 120A) and the second
speaker (second speaker 120B) are in charge is the third Is preferably lower than the tone range
handled by the second speaker (third speaker 150).
[0145]
According to the above configuration, the above speaker system can hear the middle and highpitched sound without giving the listener "the discomfort due to the sound with high directivity
having the same content being heard from two different directions". The additional effect of
being able to
[0146]
In the speaker system according to aspect 8 of the present invention, in the above-mentioned
aspect 6 or 7, the first speaker (first speaker 120A) and the second speaker (second speaker
120B) are mid-bus speakers, and the third The speaker (speaker 112) may be a tweeter.
[0147]
According to the above configuration, by the third speaker being the tweeter, it is possible to
listen to the listener particularly without disturbing the sound of the high range.
[0148]
In the speaker system according to aspect 9 of the present invention, in the above-mentioned
02-05-2019
33
aspect 6 or 7, the first speaker (first speaker 120A) and the second speaker (second speaker
120B) are mid-bus speakers, and the third The speaker (third speaker 150) may be a squawker.
[0149]
According to the above-described configuration, since the third speaker is a squawker, it is
possible to listen to the listener in particular the sound in the middle to high range without a
sense of discomfort.
In other words, the human voice can be heard by the listener without discomfort.
[0150]
The speaker system according to aspect 10 of the present invention is the speaker system
according to any one of aspects 6 to 9, wherein the first axis (Z axis), the second axis (Y axis), and
the third axis (X axis) orthogonal to each other A first speaker, a second speaker, and the
diffuser, the first speaker, the diffuser, the second speaker, and The diffusers may have a planesymmetrical shape (a substantially or completely plane-symmetrical shape) in which a plane (XY
plane) perpendicular to the first axis is a plane of symmetry.
[0151]
According to the above configuration, the sound pressure distribution of the sound from the first
speaker in one half space of the two half spaces obtained by dividing the space (entire space) by
the symmetry plane, and the two half spaces The sound pressure distribution of the sound from
the second speaker in the other half of the space is the same.
[0152]
Thus, the speaker system may be configured such that when the viewer stands up or sits down
(i.e., the viewer's ear is in one half space (e.g., a position lower than the plane of symmetry)) in
the other half space (e.g. Also when moving to a position higher than the above-mentioned plane
of symmetry), the sound emitted by the speaker system does not give a sense of discomfort to
the viewer.
[0153]
In the speaker system according to aspect 11 of the present invention, in the above aspect 10,
02-05-2019
34
the plane of symmetry is a plane in which the distance from the audio output plane of the first
speaker and the distance from the audio output plane of the second speaker are equal (both The
distance may be substantially or completely equal to each other, and the diffuser may include a
third speaker at a position straddling the plane of symmetry.
[0154]
According to the above configuration, the above speaker system has the further effect of being
able to clearly hear the sound emitted by the third speaker.
[0155]
The speaker system according to aspect 12 of the present invention uses the determination
section (determination section 311) that determines the type of audio to be output in any of the
above aspect 6 to aspect 11, and the determination results of the above determination section In
addition, an output control unit (output control unit 312) may be further included, which
controls the ratio of the output of the first speaker and the second speaker to the output of the
third speaker.
[0156]
According to the above configuration, the speaker system emits a sound by the ratio of the
output by the first speaker and the second speaker to the output by the third speaker according
to the type of audio to be output. It becomes possible to listen to any kind of voice (source genre)
without giving a sense of discomfort to the listener.
[0157]
A display device (television receiver 1) according to aspect 13 of the present invention includes
the speaker system according to any one of aspects 6 to 12 and a display panel (display panel
200).
[0158]
According to the above configuration, in the display device, the sound emitted by the speaker
group including the pair of opposed speakers can be heard without giving a sense of discomfort
to the listener, and the downsizing (thinning) Has the advantage of being easy to
[0159]
In the display device according to aspect 14 of the present invention, in the aspect 13, the
02-05-2019
35
speaker system is provided on the left and right of the display panel, and for each of the two
speaker systems, a third speaker of the speaker system is provided. The audio output surface
may be directed to a direction inclined to the display panel side relative to the normal direction
of the display panel.
[0160]
According to the above configuration, the display device has a further effect that the viewer who
is in front of the display device can hear the sound emitted by the third speaker more clearly.
[0161]
The speaker system (speaker system 100) according to aspect 15 of the present invention
includes a first speaker (first speaker 120A) and a second speaker in which the audio output
surfaces (audio output surfaces 121A and 121B) of each other face each other. A first enclosure
unit (first enclosure unit 130A) including the (second speaker 120B), and a second enclosure unit
(second enclosure) including the second speaker (first enclosure unit 130A) A wall-like
connecting member (connecting member 140) for connecting the first enclosure part and the
second enclosure part is provided between the part 130B).
[0162]
According to the above configuration, in the above speaker system, since the facing speakers
emit sound, the above speaker system can form an optimum sound field in a wide range.
[0163]
According to the above configuration, the sound emitted from the first speaker and the second
speaker is the rear side of the wall-like connecting member connecting the first enclosure portion
and the second enclosure portion (ie, the speaker system Hard to get around on the back side of
[0164]
Therefore, it can be said that the above-mentioned speaker system has an advantage that "even if
it is used as a speaker system for a television, deterioration of the sound quality due to the sound
entering the back side of the television hardly occurs".
[0165]
In addition, since the wall-like connecting member is provided between the first enclosure
portion and the second enclosure portion, the above-described speaker system is "reduced in size
02-05-2019
36
(slimmed) compared to the conventional speaker system. It can be said that there is an advantage
that it is easy to plan.
[0166]
In the loudspeaker system according to aspect 16 of the present invention, in the aspect 15, all
or part of the connecting member may be made of a sound absorbing material.
[0167]
According to the above configuration, the first speaker and the second speaker emit sound, and
the wall-shaped connecting member made of the sound absorbing material absorbs the sound
directed to the back side of the speaker system.
[0168]
Therefore, it can be said that the above-mentioned speaker system has an advantage that "even if
it is used as a speaker system for a television, the deterioration of the sound quality due to the
sound entering the back side of the television is less likely to occur".
[0169]
The speaker system according to aspect 17 of the present invention is provided between the first
speaker and the second speaker in the above-mentioned aspect 15 or 16, and reflects the sound
emitted by the first speaker and the second speaker. A diffuser (diffuser 110) may be provided,
and the diffuser may be attached to the connection member.
[0170]
According to the above configuration, the speaker system has the further effect that the sound
emitted by the first speaker and the second speaker can be heard more clearly to the listener.
[0171]
In the speaker system according to aspect 18 of the present invention, in the above-mentioned
aspect 17, it is a space coordinate system in which the first axis (Z axis), the second axis (Y axis),
and the third axis (X axis) orthogonal to each other are defined. In the space to be represented, a
first loudspeaker, a second loudspeaker and the diffuser are juxtaposed in the order of the first
loudspeaker, the diffuser and the second loudspeaker along a first axis, the wall The three-way
02-05-2019
37
connecting member may form a space in which three of four directions perpendicular to the first
axis are surrounded by the connecting member, and the space may be filled with the filling
member.
In addition, the shape of the cross section perpendicular to the first axis of the wall-shaped
connecting member may be U-shaped (for example, when the shape of the speaker system is an
elongated square pole), it is an arc shape (E.g., if the shape of the speaker system is an elongated
cylinder), or other shapes.
[0172]
According to the above configuration, the speaker system has the further effect of preventing the
deterioration of the sound quality caused by the sound emitted from the first speaker and the
second speaker entering the space.
[0173]
In the speaker system according to aspect 19 of the present invention, in the aspect 18, the
space surrounded by the connecting member filled with the filling member and the diffuser is
filled with another filling member (filling member 4 ′) It is also good.
[0174]
According to the above configuration, in the display device, according to the above configuration,
the speaker system degrades the sound quality due to the sound emitted from the first speaker
and the second speaker entering the space There is a further effect that can be prevented.
[0175]
A display device (television receiver 1) according to aspect 20 of the present invention includes
the speaker system according to any one of aspects 15 to 19 and a display panel (display panel
200).
[0176]
According to the above configuration, an optimum sound field can be formed in a wide range in
the display device, and miniaturization (thinning) can be easily achieved, and sound quality
caused by the sound entering the back side of the own device. It has the advantage of being less
likely to cause
02-05-2019
38
[0177]
In the display device according to aspect 21 of the present invention, in the aspect 20, the
speaker system is disposed around the housing of the display panel, and the wall surface of the
connection member and the back surface of the housing are flush It may be done.
[0178]
According to the above configuration, the sound emitted by the first speaker and the second
speaker becomes even more difficult to turn to the back side of the display device.
[0179]
Therefore, it can be said that the above-mentioned speaker system has an advantage that "even if
it is used as a speaker system for a television, the deterioration of the sound quality due to the
sound entering the back side of the television is less likely to occur".
[0180]
The present invention is not limited to the above-described embodiments, and various
modifications can be made within the scope of the claims, and embodiments obtained by
appropriately combining the technical means disclosed in the different embodiments. Is also
included in the technical scope of the present invention.
Furthermore, new technical features can be formed by combining the technical means disclosed
in each embodiment.
[0181]
DESCRIPTION OF SYMBOLS 1 television receiver (display apparatus) 100 speaker system 110
diffuser 111 reflective surface 112 speaker (3rd speaker, tweeter) 120A 1st speaker (mid-bus
speaker) 120B 2nd speaker (mid-bus speaker) 121A audio output surface 121B Audio output
surface 130 Enclosure unit 140 Connecting member 150 Third speaker 200 Display panel 300
Speaker system 310 Drive control unit 311 Determination unit 312 Output control unit
02-05-2019
39
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