JP2004096273

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DESCRIPTION JP2004096273
[PROBLEMS] To provide a speaker system which can enjoy images and sounds in a natural form
with a sense of presence and which does not impair the features of a thin display. A board is
formed into a curved surface. This board is used as a vibrating body 6, and at least one L or R
driver 7 is provided at appropriate positions on both sides of the inner surface to constitute a
stereo board speaker 8. This size is substantially the same as that of the image device 3 and is
attached to the back surface of the speaker device, and is disposed on the front surface of the
wall-like body. [Selected figure] Figure 1
Speaker system for video equipment
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker system for an image device used for a large liquid crystal television, a plasma display
device, etc. [0002] A large and thin liquid crystal display, a plasma display and the like are widely
used because they can enjoy powerful large screens despite the fact that they are expensive. The
device of the present invention incorporates a plurality of speakers. Conventionally, as shown in
FIG. 4 and FIG. 5, these video devices 3 are provided with speaker units 9 at the left and right or
upper and lower ends of the screen, respectively, to match the moving image and sound on the
screen 1. It was SUMMARY OF THE INVENTION However, as the size of the screen increases, the
motion and sound of the image become separated and become unfit and unnatural. was there. In
addition, there is a problem that the speaker unit becomes large to reproduce low tones, and the
characteristics of a thin display can not be utilized. Furthermore, the speaker unit 9 is provided
on the outside of the screen, and there is a problem that the external size is increased.
Furthermore, there is a problem that the speaker unit 9 is uncomfortable to the eyes of the
viewer. The present invention has been proposed in view of the above, and the object of the
present invention is to enjoy images and sounds in a natural way with a sense of realism, and to
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impair the features of thin displays To provide a speaker system that According to the present
invention, there are provided an imaging device 3, a stereo board speaker 8 provided on the back
of the imaging device 3 and disposed with a space 5 between the imaging device 3 and a walllike body. , And the stereo board speaker 8 has substantially the same shape as the rear surface
of the image device 3 and includes a vibrating body 6 formed on a curved surface and drivers 7
provided on the left and right sides of the vibrating body 6, respectively. The configuration is to
achieve the above purpose. The curved surface is characterized in that the curved surface and
the wall-like body form a horn shape. DETAILED DESCRIPTION OF THE INVENTION The present
invention will be described below with reference to the drawings. FIG. 1 is a plan view of an
embodiment of the present invention, and FIGS. 2 and 3 are operation explanatory diagrams. In
the figure, reference numeral 1 denotes a screen of a liquid crystal display or plasma display
image device 3 which is horizontally long in front of a wall 2 and is substantially rectangular in
plan view.
The structure of the imaging device 3 is well known. Further, the image device 3 is appropriately
supported by a support 4 provided on a floor surface or a wall surface, for example, as shown in
FIG. The support table 4 has a support surface 4 a to which the imaging device 3 is attached at
the top, the imaging device 3 is mounted and attached on the upper front side of the upper
surface, and a space 5 is formed at the rear. A space 5 is formed between the back surface and
the wall surface 2. The shape of the support 4 is not limited to the illustrated example. A vibrator
6 is formed by forming a plate on a curved surface. The vibrating body 6 has a substantially
rectangular shape, and both ends thereof are attached and fixed at or near the rear end portions
of the image device 3 and the central portion is formed so as to project rearward. The material of
the vibration body 6 is appropriately selected from various known materials such as expanded
polystyrene, other resins, paper, honeycomb structure, FRP (fiber reinforced plastic), etc., and
these are molded into a desired shape and used. . Preferably, the size is approximately equal to
the size of the back of the imaging device. This is because the matching between the moving
image and the sound on the screen, that is, the moving image and the sound can be matched to
obtain a sense of unity between the screen and the sound. The size does not necessarily have to
be equal to the image device 3 and the vibrator 6, and it may be slightly smaller as long as the
desired purpose can be achieved. Drivers 7 for L and R are provided at appropriate positions on
the left and right of the inner surface of the vibrating body 6 respectively. As is well known, the
driver 7 includes a magnetic circuit and a voice coil that is vibratably provided in the magnetic
gap of the magnetic circuit, and a drive unit including the voice coil is a vibrating body 6. The
vibration is transmitted to the vibrating body 6 through the respective drivers 7 so that sound
waves can be emitted. The driver 7 is provided at least on the left and right, one for the left and
one for the right, and the so-called stereo board speaker 8 is configured by the driver 7 and the
vibrator 6. Note that either one of the upper and lower surfaces of the stereo board speaker 8
may be closed by a plate member (not shown) of an appropriate shape and an appropriate
material. In FIG. 3, r 0 is the distance between the wall 2 and the top of the back of the stereo
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board speaker 8, r is the distance between the wall 2 and both ends of the back of the stereo
board speaker 8, where r> r 0 ing. In addition, the distance between the back top and each end is
L, respectively, and they are equally formed, and the curved surface of the stereo board speaker
8 forms a horn shape by the curved surface and the wall surface 2 to obtain good acoustic
efficiency. It is configured to be able to.
Next, the operation of the present invention will be described. When a stereo audio signal is
applied to each driver 7, the vibrating body 6 of the stereo board speaker 8 vibrates
correspondingly and emits a sound wave. The sound waves from the stereo board speaker 8 hit
the rear wall 2 as shown by the arrows in each figure, and are reflected forward, and the person
in front is as if the sound is coming out from the screen of the movie theater You can hear the
sound with a real sense of presence. The stereo board speaker 8 is not disposed only in front of
the wall 2 but may of course be disposed in front of a wall-like body such as a screen. As
described above, according to the present invention, the stereo board speaker provided on the
back surface of the video apparatus 3 and the video apparatus 3 and having the space 5 between
the video apparatus 3 and the wall-like body is provided. 8 and the stereo board speaker 8 has
substantially the same shape as the rear face of the image device 3 and has a curved body 6 and
drivers 7 respectively provided on the left and right sides of the inner face of the vibration body
6. It can be heard in a realistic sense of sound that matches the image coming around from the
rear of the image to the front. Further, since the speaker unit is not exposed behind and hidden
outside the screen, there is no sense of incongruity, and it is possible to enjoy video and sound in
a cinema or theater atmosphere. Furthermore, since the speaker unit is not exposed to the
outside of the screen, enlargement of the outer shape can be prevented. BRIEF DESCRIPTION OF
THE DRAWINGS FIG. 1 shows a plan view of an embodiment of the present invention. FIG. 2 is a
perspective view for explaining the operation of the above. FIG. 3 is a plan view for explaining
the operation of the above. FIG. 4 shows a front view of a prior art example. FIG. 5 shows a front
view of another conventional example. [Description of the code] 1 screen 2 wall 3 image device 4
support 4 a support surface 5 space 6 vibrator 7 driver 8 stereo board speaker
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