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JP2007251421

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
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DESCRIPTION JP2007251421
The present invention provides an audio / video output device which is lighter than conventional
audio / video output devices and can be adjusted to an acoustic effect excellent in sense of
reality, and which reduces spatial problems even when used in a general home. SOLUTION: A
display 2 capable of displaying an image and a vibration of a honeycomb core structure provided
on the left and right of the display 2 and capable of changing the radiation angle of sound about
a rotation axis provided in the vertical direction An audio / video output device 1 comprising a
flat plate-like speaker 3 having a plate; [Selected figure] Figure 1A
Video and audio output device
[0001]
The present invention relates to a video and audio output apparatus having a flat plate-like
speaker having a honeycomb core structure, and in particular, it is lightweight and realistic that
can easily change the radiation angle of sound by means of a movable door-like speaker. The
present invention relates to a video and audio output device that exhibits excellent sound effects.
[0002]
Conventionally, in a video / audio output device such as a television, a speaker is incorporated in
the device, and sound emitted from the speaker is often configured to be emitted from an
opening fixed in front of the speaker.
[0003]
Also, a video / audio output device has been proposed which attempts to obtain more realistic
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voice by separating the speaker box from the video reproduction device and arranging it on the
left and right and emitting the sound from a position distant from the video device. In particular,
with the recent increase in the size of video and audio output devices, speakers are separated
from television receivers due to weight and space problems, and the purpose is to improve the
size and weight of the television receivers and the acoustic performance. , A television stand
apparatus with a speaker is proposed (for example, refer patent document 1).
[0004]
In addition, a video and audio output apparatus has been proposed in which a display screen
itself used as a projection screen is provided with a speaker function, and a display screen can be
obtained so as to obtain realistic sound (for example, see Patent Document 2). ).
JP-A-11-112910 JP-A-11-512245
[0005]
However, in a conventional television with a built-in speaker in the main body, sufficient realism
can not be obtained, and a separate type speaker and a TV stand with a speaker require a large
space, and thus, like in Japan. In a narrow residential environment, it was generally difficult to
use in general.
[0006]
On the other hand, although the display screen is lightweight and can provide realistic sound, it
has to be prepared for the environment of a projector, screen, etc., and the room needs to be
darkened at the time of projection, etc. There are many cases where it is difficult to use in
general homes.
[0007]
Therefore, the present invention provides an audio / video output device which is lighter than the
conventional audio / video output device and can be adjusted to an acoustic effect excellent in
sense of reality and which reduces spatial problems even when used in general homes. The
purpose is to
[0008]
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As a result of intensive studies to solve the above problems, the present inventors have solved
this problem by attaching flat speakers having a honeycomb core structure to the left and right
of the display so that the radiation angle of sound can be changed. It is found that the present
invention can be accomplished.
[0009]
That is, the video and audio output apparatus according to the present invention can be provided
with a display capable of displaying video and a pair provided on the left and right of the display,
and can change the radiation angle of audio around a rotation axis provided in the vertical
direction. And a flat loudspeaker having a honeycomb core structure diaphragm.
[0010]
According to the video and audio output device of the present invention, since the speaker using
the flat diaphragm made of the core member of the honeycomb core material and the resinimpregnated fiber base material laminated on both sides of the core member is provided, Since
the device itself is lighter than in the prior art and the angle of the sound emitted from this
speaker can be changed, adjustment to a position where an excellent acoustic effect of realism is
obtained can be easily performed. Can.
[0011]
Hereinafter, the video and audio output apparatus of the present invention will be described in
detail with reference to the drawings.
[0012]
First Embodiment FIG. 1A is a front view showing a configuration of a video and audio output
apparatus according to the present invention, FIG. 1B is a plan view thereof, and FIG. 1C is a left
side view thereof.
[0013]
As shown in FIGS. 1A to 1C, the video and audio output apparatus 1 according to the present
invention comprises a display 2 as a main body and a pair of speakers 3 attached to the left and
right of the display 2. It is attached by a hinge 4, and the outside surface can be moved in an arc
shape with the hinge 4 as a rotation axis.
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Further, a support 5 is attached to the back of the display 2 so that the video and audio output
apparatus 1 can be stably placed.
[0014]
Here, the display 2 in the present invention is not particularly limited as long as it can perform
video reproduction, and a liquid crystal display device, an SED (multi-electron gun type flat
display device), a flat display device for plasma application, A flat panel such as a thin ejection
type display device or an organic EL display device, a Braun tube display device, etc. may be
mentioned, and a flat panel is preferable from the viewpoint of reducing the weight of the device
itself and securing an installation space.
By adding a function as a television receiver to the display 2, the display 2 can be used as a video
output device in general homes, which is particularly preferable.
[0015]
Next, the speaker 3 in the present invention has its inner surface on the display side attached to
the side surface of the display 2 by the hinge 4 and, as shown in the plan view of FIG. The outer
surface of the speaker 3 can be moved in the form of an open door so as to draw an arc-like
locus.
Here, FIG. 2 is a plan view of the video and audio output device 1 according to the present
embodiment, and shows a fluctuation state of the speaker 3 when the speaker 3 is moved by the
rotation axis of the hinge 4.
With such a configuration, the angle of the sound emitted from the speaker 3 is changed, so that
the sound effect can be adjusted.
[0016]
In addition, when moving or not using the device body, the speaker 3 is folded by positioning the
speaker 3 at a position covering the front of the display 2 or by bringing the side of the display 2
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into contact with the back of the speaker 3. 3 reduces the possibility of damage due to the
popping out, can secure a space, and also looks smart.
[0017]
The speaker 3 moves from the rear surface of the speaker 3 to the side surface of the display 2
while sequentially moving as shown by the broken line starting from the position which partially
covers the front of the display shown by the solid line in FIG. It can move to a contact position,
and its movable range is preferably 270 to 330 degrees.
Arrows in FIG. 2 indicate the movable range.
[0018]
The reason for enabling wide-angle movement up to this point is largely due to the flat-plate-like
speaker 3 consisting of a diaphragm with a honeycomb structure capable of excellent voice
output, and the thickness of this speaker 3 is 1 to 30 mm Preferably, it is 3 to 16 mm.
[0019]
Here, in the present embodiment, the display 2 and the speaker 3 are attached by the hinge 4,
but the present invention is limited to this as long as the radiation angle of the sound from the
speaker 3 can be similarly adjusted. It is not a thing.
[0020]
Since the speaker 3 can be moved as described above, it is possible for the viewer who
simultaneously views the video reproduced on the display 2 and the sound radiated from the
speaker 3 to read the sound radiated from the speaker 3 The viewer can appropriately select
whether to radiate in the direction to adjust the sound effect, and can change to a desired angle
each time depending on the viewer, the content to be viewed, and the like.
[0021]
At this time, the left and right speakers 3 may maintain the same angle with respect to the
display, or the left and right speakers may be independently adjusted to different angles.
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Also, the angle adjustment may be manually adjusted by the viewer, or may be provided by
means of angle adjustment and mechanically adjusted by commanding a desired angle or a
preset angle. May be
[0022]
Next, the configuration of the speaker 3 will be described in detail.
3A is a schematic configuration view of the speaker 3, and FIG. 3B is a partially cutaway
perspective view of the diaphragm 11 having a honeycomb structure used for the speaker 3.
[0023]
The speaker 3 used in the present invention comprises a diaphragm 11 having a honeycomb
structure and an exciter 12 for vibrating the diaphragm 11 as shown in FIG. 3A. An amplifier
(amplifier) 13 is connected which amplifies the audio signal sent and transmits it to the exciter
12.
[0024]
The speaker 3 according to the present invention can improve the sound quality and the output
by using the diaphragm 11 having a honeycomb structure as compared with the case where the
piezoelectric speaker is simply used, and a general cone The weight of the speaker can be
reduced as compared with that of the type speaker, and the thickness of the speaker can be
reduced.
Furthermore, the diaphragm 11 having a honeycomb core structure used in the speaker 3 of the
present invention can stably output sound during sound reproduction, and is effectively stable
even if the sound to be reproduced is a large sound. Can be played back.
[0025]
The exciter 12 is usually provided on the back surface of the diaphragm 11 (opposite to the
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listener), and vibrates the exciter 12 to vibrate the diaphragm 11 having a honeycomb structure
in contact therewith. It emits sound.
[0026]
Note that FIG. 3A shows only the main configuration of the speaker 3, and in addition, a coating
for decoration, a coating for protecting the exciter 12, and the like in a range not impairing the
function as the speaker 3. Can be provided as appropriate.
[0027]
As shown in FIG. 3B, the diaphragm 11 having the honeycomb structure of the speaker 3 is
configured, for example, by sandwiching the honeycomb core core member 22 by two outer
layer plates 21. This honeycomb core core member No particular limitation is imposed on the
cross-sectional shape and the like of the cavity, as long as the honeycomb structure 22 has a
honeycomb structure in which the cavity is formed. For example, a hexagonal shape as shown in
the notch of FIG. There may be mentioned square, rectangular, rhombic, corrugated, etc., and it is
not particularly limited.
Among these, a hexagonal honeycomb is preferable, and the hexagonal shape is preferably a
dense structure having an area of 0.01 to 1 cm <2>.
[0028]
In addition, the outer layer plate 21 constituting the diaphragm 11 can use a resin-impregnated
fiber base material, and as the base material, cellulose, glass fiber, carbon fiber, aramid fiber from
the viewpoint of easiness of manufacture and strength. And the like can be used, and either a
woven fabric or a non-woven fabric can be used, but from the viewpoint of improving sound
quality and volume characteristics, it is preferable to be a woven fabric having excellent isotropy.
[0029]
The resin-impregnated fiber base material used for the outer layer plate is obtained by
continuously applying and drying a thermosetting resin to a roll-like base material such as woven
fabric or non-woven fabric, and forming a prepreg suitably cut into a necessary size. Can.
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[0030]
On the other hand, the honeycomb core core member 22 can be made of a fiber material used as
a base material and impregnated with a resin, and the base material may be any fiber material
that can form a honeycomb core, cellulose, glass fiber, A carbon fiber, an aramid fiber, etc. can be
used, and it is preferable to form a honeycomb core substrate by an aramid fiber substrate
because an excellent sound quality can be obtained.
[0031]
The honeycomb core substrate is manufactured by bonding and spreading a plurality of sheets of
linear adhesive coated at regular intervals on a fiber substrate, for example, aramid woven fabric
or nonwoven fabric. It may be formed by any method such as a method of forming a shape of
unevenness and then bonding and forming a method of stacking and bonding a plurality of tubes.
The honeycomb core substrate can be impregnated with the resin composition, dried and cured
to form a honeycomb core core member.
[0032]
The outer layer plate 21 and the honeycomb core core member 22 can be obtained by
impregnating and curing the above-mentioned base material with a resin, and as the resin used
here, any resin used for forming a prepreg can be used. However, in view of strength, heat
resistance, moldability and the like, thermosetting resins are preferable, and in particular, epoxy
resins, phenol resins and unsaturated polyester resins are particularly preferable.
[0033]
In order to further increase the strength, a filler may be added to these resins, and as the filler
used here, inorganic fillers such as mica and talc, organic fillers, glass fibers, carbon fibers and
aramid fibers Fibrous fillers such as nylon fibers and silicon carbide fibers, chops and the like can
be used as appropriate mixed.
[0034]
And although manufacture of diaphragm 11 pastes and builds outer layer board 21 on both sides
of honeycomb core core member 22, adhesion is made to apply adhesive on both sides of
honeycomb core core member 22 and then outer layer board 21 is bonded. Alternatively, a
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prepreg impregnated with a thermosetting resin to be an outer layer plate may be laminated on
both surfaces of the honeycomb core core member 22 and integrally molded.
[0035]
As a particularly preferable configuration of the diaphragm 11, a composite material in which a
glass fiber substrate is hardened with an epoxy resin as the outer layer plate 21 and a material in
which an aramid fiber substrate is impregnated as a honeycomb core core member 22 is used.
Included sandwich panels.
[0036]
The exciter 12 is not particularly limited as long as it can effectively vibrate the speaker
diaphragm 11 to generate sound, and a piezoelectric vibrator or the like can also be used.
It is preferable that these be appropriately selected and used according to the thickness allowed
when installing, the required output, and the like.
[0037]
For example, as shown in FIG. 3A, one exciter 12 may be provided on the back of the surface of
the diaphragm 11 that emits sound as a speaker, and the position may be disposed near the
center of the speaker diaphragm 11. Although not shown, for example, two speakers may be
arranged with gaps in the vertical direction of the speaker diaphragm, or two may be arranged
with gaps in the left-right direction, and the installation location and number thereof are
necessarily limited. It is possible to select and install any position as long as the sound effect to
be exerted is effective.
[0038]
Next, the operation of the video and audio output apparatus 1 of the present invention when the
radiation direction of the sound of the speaker 3 is changed will be described.
[0039]
The video and audio output apparatus 1 according to the present invention is intended to be able
to obtain an excellent acoustic effect even in a narrow room rather than an environment with
well-equipped audio equipment.
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[0040]
If there is room in the normal space, as shown in FIG. 1B, the speaker 3 may finely adjust the
angle based on the position where the front of the speaker is directed to the viewer. For example,
the installation space The television may be installed at a narrow corner of a room, for example,
at a position as shown in FIG. 4 and it may be difficult to adjust.
At this time, according to the video and audio output device 1, the back of the speaker 3 is
moved to a position in contact with the side surface of the display 2 to reduce the width of the
video and audio output device itself by the size of the speaker 3. Can be made easier.
[0041]
At this time, the front side (the sound emission side) of the speaker 3 is directed outward from
the side of the display, so the reproduced sound is emitted diagonally backward with respect to
the front of the display. Because of the arrangement, the wall is in close proximity, and the sound
emitted from the speaker 3 is reflected on the wall and reaches the viewer.
In addition, since the viewer can appropriately select the angle of the speaker 3, it is possible to
easily adjust it to the optimum position at which the sense of reality is maintained.
Therefore, according to the video and audio output device of the present invention, it is possible
to hold the acoustic effect while saving the installation space.
[0042]
As described above, the video and audio output apparatus 1 according to the present invention is
not only used for normal video and audio reproduction, but also enables effective reproduction of
audio even in a narrow house, and provides excellent sound effects. It is something to try to
demonstrate.
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In addition, the viewer can easily obtain a desired sound effect by selecting and adjusting the
angle of the speaker appropriately.
[0043]
Second Embodiment FIG. 5 shows a plan view and sound effects of the video and audio output
device 31 according to a second embodiment of the present invention.
The video / audio output device 31 shown in FIG. 5 is different from the video / audio output
device 31 of the first embodiment only in that the double-sided speaker 32 is configured to emit
sound from both the front and back sides. It is.
[0044]
When this audio / video output device 31 is arranged in a room as shown in FIG. 5, the
installation space itself has a little extra space, so there is no need to fold the double-sided
speaker 32 to the display side. The two-sided speaker 32 may be adjusted.
[0045]
At this time, since the video / audio output device 31 uses a diaphragm having a honeycomb
structure as the double-sided speaker 32, vibrations given by the exciter are not only voices from
the front side but also the back side of the double-sided speaker 32. And are configured to be
emitted.
In this way, when sound is emitted from both the front and back of the speaker, the sound
emitted from the back is reflected to the wall in addition to the sound emitted from the front of
the speaker, unlike the normal speaker. Reach the audience.
[0046]
As described above, the video and audio output apparatus 31 according to the present invention
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is not only used for video and audio reproduction normally, but also enables effective
reproduction of audio even in a narrow house, and provides excellent sound effects. It is
something to try to demonstrate.
In addition, the viewer can easily obtain a desired sound effect by selecting and adjusting the
angle of the speaker appropriately.
[0047]
Third Embodiment FIG. 6A is a plan view of a video and audio output device 41 according to a
third embodiment of the present invention.
In the video and audio output device 41 shown in FIG. 6A, a first speaker 42a in which the
speaker 42 is attached to the display 2 by a hinge 4 and a second speaker 42b in which the
speaker 42 is attached to the first speaker 42a by a hinge 43 , The other configuration is the
same as that of the first embodiment.
[0048]
Here, the speaker 42 comprises a first speaker 42a and a second speaker 42b, and the first
speaker 42a and the second speaker 42b have a hinge portion 43 formed between the two
speakers. Audio can be output by changing the angle of the speaker.
For example, as shown in FIG. 6A, the first speaker 42a is directed to the viewer near the video
and audio output device 41, and the second speaker 42b is away from the video and audio
output device 41, respectively. By pointing at, it is possible to effectively listen to the audience at
different positions.
[0049]
Further, for example, as shown in FIG. 6B, when the speaker 42 covers the display 2, it can
function as a protective door of the display, and the display can be protected from dirt and the
like caused by dust and scratches caused by external force. .
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[0050]
Furthermore, although not shown, by folding the first speaker 42a and the second speaker 42b
so that the back surfaces of the speakers are in contact with each other, sound is emitted from
the front and back surfaces of the speaker similar to the second embodiment. Can also be used.
[0051]
As described above, the video and audio output apparatus 41 according to the present invention
is not only used for video and audio reproduction normally, but also enables effective
reproduction of audio even in a narrow house, and provides excellent sound effects. It is
something to try to demonstrate.
In addition, the viewer can easily obtain a desired sound effect by selecting and adjusting the
angle of the speaker appropriately.
Furthermore, the speaker can also function as a protective door for the display.
[0052]
In this embodiment, an example in which one speaker is configured by two speakers is shown,
but three or more speakers may be configured.
Further, even when one speaker is used as in the first embodiment, it is possible to play a
function as a protective door by enlarging the shape of the speaker.
[0053]
Hereinafter, the present invention will be described with reference to Reference Examples and
Examples.
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The present invention is not limited by these examples.
[0054]
(Reference Example 1) [Preparation of Varnish] 200 parts by mass of resol-type phenol resin
(manufactured by Showa Highpolymer Co., Ltd., trade name: BRM-470) and 800 parts by mass of
methanol are mixed to prepare a varnish for impregnation. did.
[0055]
Reference Example 2 Preparation of Outer Layer Board A Glass fiber cloth (Asahi Shiyu Bell Co.,
Ltd., trade name: A57628) One ply is impregnated with the varnish of Reference Example 1 and
cured to form an outer layer board A having a thickness of 0.2 mm. Created.
[0056]
Reference Example 3 Preparation of Outer Layer Board B A carbon fiber cloth (made by Toray
Industries, Inc., trade name: Torayca C06142) 1 ply is impregnated with the varnish of Reference
Example 1 and cured to form an outer layer board B having a thickness of 0.2 mm. Created.
[0057]
(Reference Example 4) [Preparation of Outer Layer Plate C] A paper ply (made by Ohira Paper
Co., Ltd., trade name: FC-10) 1 ply is impregnated with the varnish of Reference Example 1 and
cured to form an outer layer plate C having a thickness of 0.2 mm It was created.
[0058]
Example 1 A varnish prepared by using a honeycomb core material (hexagonal honeycomb;
length 400 mm × width 300 mm × thickness 6 mm) obtained by using aramid fiber non-woven
fabric (manufactured by DuPont, 0.1 mm thickness) according to the reference example After
impregnation for 3 minutes, it was cured at 175 ° C. for 2 hours.
After curing, the honeycomb core material was cut according to the shape of the speaker with a
cutter to obtain a honeycomb core core member having a thickness of 6 mm.
[0059]
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The outer layer board A prepared in Reference Example 2 as an outer layer board was adhered to
both surfaces of this honeycomb core core member with an epoxy resin to form a diaphragm.
An exciter was attached to this diaphragm to create a speaker.
The obtained speakers were attached to the left and right sides of the display one by one with a
hinge as shown in FIG. 1 so that the angle could be changed into an open door shape to
manufacture a video and audio output device.
[0060]
This audio / video output device can output sound quality and volume from the speaker to the
same level as conventional speakers, and can easily obtain desired acoustic effects by adjusting
the angle of the speaker. confirmed.
[0061]
(Examples 2 to 3) As the outer layer plate adhered to both surfaces of the honeycomb core core
member, in Example 2, the outer layer plate B prepared in Reference Example 3 and in Example
3, the outer layer plate C prepared in Reference Example 4 A speaker was prepared in the same
manner as in Example 1 except that the above was used, and further, an audio and video output
apparatus was manufactured using this.
[0062]
These audio / video output devices are capable of outputting sound quality and volume from
speakers to the same level as conventional speakers, and can easily obtain desired sound effects
by adjusting the angle of the speakers. confirmed.
[0063]
FIG. 2 is a front view showing the configuration of a video and audio output device according to
the first embodiment.
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It is a top view of the audio-video output device in FIG. 1A.
FIG. 1B is a left side view of the video and audio output device in FIG. 1A.
FIG. 6 is a plan view of the video and audio output device showing an operation state of the
speaker in the first embodiment.
It is a schematic block diagram of the speaker in a 1st embodiment.
It is a partially cutaway perspective view of the diaphragm 11 which has a honeycomb structure
used for the speaker of FIG. 3B.
It is a conceptual diagram which shows the acoustic effect in 1st Embodiment.
It is a conceptual diagram which shows the acoustic effect in 2nd Embodiment.
It is a top view of the audio-video output device in a 3rd embodiment.
It is a top view when the speaker in 3rd Embodiment is made into a protection door.
Explanation of sign
[0064]
DESCRIPTION OF SYMBOLS 1 ... Audio-video output apparatus, 2 ... Display, 3 ... Speaker: 4 ...
hinge. Output device 32: double-sided speaker 41: video and audio output device 42: speaker
42a: first speaker 42b: second speaker 43: hinge
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