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JP2010226648

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DESCRIPTION JP2010226648
PROBLEM TO BE SOLVED: To audibly improve the sound quality of a speaker with an
inexpensive structure. SOLUTION: In a thin display device in which a liquid crystal module 2 is
fixed on a stand 1 and a pair of speakers 4 is disposed downward at a lower part in a cabinet 3
covered with the liquid crystal module 2, the stand 1 is provided. The stand cover 1A includes a
wide flat base portion 1a and an upright portion 1b integrally formed on the base portion 1a, and
the front surface of the upright portion 1b is directed upward at a predetermined angle α
toward the rear. The reflection surface 8 is inclined to face the speaker 4, and the reflection
surface 8 reflects the sound transmitted from the speaker 4 forward. [Selected figure] Figure 1
Thin display device
[0001]
The present invention relates to, for example, a thin display device such as a liquid crystal
television (LCD TV), and in particular, an inexpensive structure that audibly improves the sound
quality of a speaker.
[0002]
Conventionally, there is one shown in FIG. 6 (a) and (b) as an example of a thin display device,
which is a liquid crystal television, and FIG. 6 (a) is the same front view and FIG. 6 (b) is the same
side view. It is.
[0003]
As shown in FIGS. 6 (a) and 6 (b), in the liquid crystal television, a liquid crystal module (thin
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display unit) 2 is fixed on a stand 1, and a pair of cabinets 3 covered with the liquid crystal
module 2 is mounted. The speaker 4 is arranged.
[0004]
In the liquid crystal television, since the internal space of the cabinet 3 is narrow, the speakers 4
are disposed downward on the lower sides of the cabinet 3 in a state of being formed in a narrow
elliptical shape.
As a related technique, there is one described in Patent Document 1.
[0005]
JP 2008-211381 A
[0006]
In the above-described conventional configuration, the speakers 4 are disposed downward on the
lower sides of the cabinet 3 and the sound transmitted from the speakers 4 strikes the stand
mounting surface 5 or the stand 1, so that the sounds are diffusely reflected. As a result, the
sound is distorted, and the loss of sound, especially in the high range, worsens, resulting in the
deterioration of sound quality.
[0007]
Therefore, it is conceivable to arrange a reflector below the cabinet 3 and to reflect the sound
emitted from each speaker 4 forward by the reflector, but in this case, the number of parts
increases by providing a reflector. Cost up.
[0008]
An object of the present invention is to provide a thin display device in which the sound quality
of a speaker is audibly improved with an inexpensive structure in view of the above-mentioned
conventional defects.
[0009]
In order to achieve the above object, the invention according to claim 1 is a thin display device in
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which a thin display unit is fixed on a stand, and a speaker is disposed downward at a lower
portion in a cabinet covered by the thin display unit. The stand cover of the stand includes a wide
flat base portion and an upright portion integrally provided on the base portion, and a front
surface of the upright portion is inclined upward at a predetermined angle toward the rear. It is
characterized as a reflecting surface facing the speaker, and the reflecting surface reflects the
sound transmitted from the speaker forward.
[0010]
According to the invention of claim 2, according to the invention of claim 1, the reflecting surface
is formed in a circular arc shape in plan view with a predetermined radius of curvature, and the
sound emitted from the speaker is fronted by the reflecting surface. It is characterized in that it is
made to reflect toward the center of the other.
[0011]
According to the first aspect of the present invention, since the sound transmitted from the
speaker is reflected forward by the reflection surface, the sound is not irregularly reflected as in
the prior art, and particularly, the omission in the high range is good. Thus, it is possible to
provide a good acoustic environment in which the sound quality is audibly improved.
[0012]
Further, since the reflecting surface is formed utilizing the front face of the standing portion of
the stand cover, the number of parts does not increase, and the cost is low and the cost is
excellent.
[0013]
According to the second aspect of the present invention, the sound emitted from the speaker is
intensively reflected toward the center of the room, for example, by the reflecting surface in a
circular arc shape in plan view, to provide a better acoustic environment. be able to.
[0014]
(A) is a front view of the thin display device which is one Embodiment of this invention, (b) is the
same side view.
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It is a top view of the principal part.
It is a perspective view of the principal part.
It is a top view of the principal part of the thin display which is other forms of implementation of
this invention.
It is a perspective view of the principal part.
(A) is a front view of a prior art example, (b) is the same side view.
[0015]
1 to 3 show a thin display device according to an embodiment of the present invention, which is
a liquid crystal television, and a stand 1 is a stand cover 1A made of a synthetic resin material,
and the stand cover 1A. The stand cover 1A is made of a rigid metal stand core material 1B fixed
inside and fixed to the liquid crystal module 2 with a screw 7. The stand cover 1A includes a wide
flat base part 1a and the base part 1a. a front surface of the rising portion 1b is inclined upward
at a predetermined angle α (for example, 45 °) toward the rear and a reflecting surface 8
facing both speakers 4 The reflection surface 8 is formed to have a smooth surface in order to
reflect sound efficiently.
Since the configuration other than the above is substantially the same as the configuration shown
in FIG. 6, the same reference numerals are given to the same parts and the description will be
omitted.
[0016]
As shown in FIG. 1, the vertical width T1 along the back and forth directions a and b of the
reflecting surface 8 is set equal to or larger than the vertical width t1 of the exclusive range of
both speakers 4 (T11t1), and the reflecting surface The width H along the left and right
directions c and d orthogonal to the front and rear directions a and b of 8 is set equal to or larger
than the width h of the exclusive range of both speakers 4 (Hhh). All of the emitted sound is
received by the reflecting surface 8 and reflected.
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[0017]
As shown in FIG. 1, the vertical width T2 along the front and rear directions a and b of the upper
surface 9 of the upright portion 1b is set equal to or smaller than the distance t2 from the two
speakers 4 to the rear end face 3a of the cabinet 3. By bringing the upper surface 9 of the rising
portion 1b into contact with the lower surface rear portion of the cabinet 3 and fastening it with
the screw 7, the reflecting surface 8 is made to face the both speakers 4 with certainty.
[0018]
The procedure for mounting the stand 1 will be described. With the liquid crystal module 2 in a
horizontal state, the stand core 1B of the stand 1 is fixed to the liquid crystal module 2 with a
screw 7, whereby the upper surface of the standing portion 1b is obtained. While bringing 9 into
contact with the lower rear of the cabinet 3, the reflecting surface 8 is directed to each speaker 4.
[0019]
In the above-described configuration, when the liquid crystal module 2 is activated and sounds
are emitted downward from the respective speakers 4, the emitted sounds are reflected by the
reflection surface 8 and projected forward.
[0020]
According to the above configuration, since the sound transmitted from the speaker 4 is reflected
forward by the reflection surface 8 (see arrow A), the sound is not irregularly reflected as in the
prior art, and particularly in the high frequency range. It is possible to provide a good acoustic
environment in which the sound quality is improved audibly.
[0021]
Further, since the reflecting surface 8 is formed utilizing the front surface of the rising portion 1b
of the stand cover 1A, the number of parts is not increased, and the cost is low and the cost is
excellent.
[0022]
FIGS. 4 and 5 show a flat panel display according to another embodiment of the present
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invention, which is a liquid crystal television, and the reflective surface 8 is flat with a
predetermined radius of curvature R (for example, 3 to 5 m). It is formed in the shape of a visual
arc.
Since the configuration other than the above is substantially the same as the configuration shown
in FIGS. 1 to 3, the same parts will be denoted by the same reference numerals and the
description thereof will be omitted.
[0023]
In the above configuration, when sound is emitted downward from each speaker 4, the emitted
sound is reflected by the reflection surface 8 and projected toward the front center.
[0024]
According to the above configuration, the sound transmitted from the speaker 4 is intensively
reflected toward the center of the room, for example, by the reflecting surface 8 in a plan view
arc shape, to provide a better acoustic environment. Can.
[0025]
In the above embodiment, the liquid crystal television has been described as an example, but the
present invention is not limited to this. For example, the present invention can be applied to
various thin display devices such as a liquid crystal monitor.
[0026]
Reference Signs List 1 stand 1A stand cover 1a base portion of stand cover 1b standing portion
of stand cover 2 liquid crystal module (thin display portion) 3 cabinet 4 speaker 8 reflection
surface α inclination angle of reflection surface R radius of curvature of reflection surface
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