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JP2008153780

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
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DESCRIPTION JP2008153780
An object of the present invention is to make it possible to listen to sound with good sound
quality in a predetermined viewing range and not to spoil the design of a flat panel display even
if the image display screen is enlarged to 60 inches or more. With the goal. SOLUTION: In a large
flat type image display apparatus in which speakers 17L and 17R are respectively provided on
the left and right sides of an image display screen 10, sound emitting surfaces f of the left and
right speakers 17L and 17R are displayed on the image display screen 10. On the other hand,
speaker grills 26L and 26R are formed of a sheet material having an infinite number of fine holes
directed to the front of the image display screen 10 in front of the left and right speakers 17L
and 17R while being inclined inward at a predetermined angle θ. Is provided. [Selected figure]
Figure 1
Large flat screen display
[0001]
The present invention relates to a large flat screen image display device having an image display
screen of, for example, 60 inches or more using a liquid crystal display panel, a plasma display
panel (PDP) or the like.
[0002]
Generally, a flat panel display using a liquid crystal display panel, a plasma display panel or the
like is commercially available.
[0003]
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In the flat panel display, speakers are provided on the left and right sides of an image display
screen including a liquid crystal display panel, a plasma display panel and the like.
[0004]
In front of the left and right speakers of this conventional flat panel display, a speaker grill
injection-molded from synthetic resin is disposed, and the left and right speakers emit sound to
the front of the video display screen. (See Patent Document 1).
[0005]
The device described in Patent Document 2 has a left tweeter and a left woofer integrally
provided with the television receiver on the left side of the television receiver, and a right tweeter
and a right woofer on the right side with the television receiver. It is provided integrally.
A center tweeter is integrally provided with the television receiver so as to be directed inwardly
at an angle θ on both the left and right sides of the television receiver, and the center tweeter is
disposed at the center of the television receiver by the left and right center tweeters. A sound
image similar to that of the center speaker is obtained.
[0006]
Further, the sound device disclosed in Patent Document 3 is a device for reproducing the sound
of the image display device having the image display surface, but the first speaker unit disposed
on the first side of the image display device And a second speaker unit disposed on the second
side of the image display device opposite to the first side.
Then, the distance between the image display plane and the intersection position of the first axis
of the speaker arranged in the first speaker unit and the second axis of the speaker arranged in
the second speaker unit is the width of the image display plane It is 0.5 to 2 times L.
Thereby, in the area between the image display device and the user of the image display surface,
the sound generated from the speaker unit can be reliably guided.
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JP-A-2004-72239 JP-A-2004-247890 JP-A-10-313493
[0007]
In the flat screen image display device of Patent Document 1 described above, when the size of
the image display screen is, for example, 60 inches or less, the speakers on the left and right
sides of the image display screen emit sound in the front direction of the image display screen.
Will be described. In this case, when viewed at the front center and at a distance three times the
height of the image display screen, which is regarded as the optimum viewing position of the flat
panel display device, there is no influence on the sound quality at all. It has been known.
However, when this video display screen is further enlarged and this video display screen
becomes 60 inches or more, it is at the front center and at a distance three times the height of
the video display screen, which is regarded as the optimum viewing position. There is a
disadvantage that the sound image can not be localized and the sound quality is deteriorated.
[0008]
Further, when the speaker grille 1 is injection molded with a synthetic resin, the thickness of the
speaker grille 1 needs to be 1.5 mm or more as shown in FIG. 10, and a hole for sound emission
formed in the speaker grille 1 1a becomes guidance of the directionality of sound. Even if the
sound emitting surface for emitting the sound of the speaker is inclined to the inside of the image
display screen, the emission direction of the sound is the front direction of the image display
screen and is the optimal viewing position, the front center and the image Even at a position at a
distance three times the height of the display screen, the sound image can not be localized and
the sound quality is degraded.
[0009]
Further, in the speaker device of the television receiver disclosed in Patent Document 2, there is a
problem that the design of the flat panel display may be impaired since the left and right center
tweeters project from the front of the television receiver. .
[0010]
Also, in the audio apparatus disclosed in Patent Document 3, the speakers of the first and second
speaker sections protrude from the front as in Patent Document 2, and therefore, there is a
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problem that the design of the flat panel display may be damaged.
[0011]
SUMMARY OF THE INVENTION In view of the foregoing, the present invention enables a user to
listen to a sound with good sound quality in a predetermined viewing range even when the image
display screen is enlarged to 60 inches or more, and at the same time the design of a flat panel
display The purpose is to ensure that
[0012]
The large flat type image display apparatus of the present invention is a large flat type image
display apparatus in which speakers are provided on the left and right sides of the image display
screen, respectively. While being inclined inward at a predetermined angle, at the front of each of
the left and right speakers, there is provided a speaker grill composed of a sheet material having
innumerable minute holes directed to the front of the image display screen.
[0013]
The large flat screen image display apparatus according to the present invention is the large flat
screen image display apparatus according to claim 1, wherein the sound emitting surfaces of the
left and right speakers are inclined at predetermined angles inward with respect to the image
display screen in this case. 8 degrees and -8 degrees.
[0014]
A large flat type image display apparatus according to the present invention is the large flat type
image display apparatus according to claim 1, wherein a speaker grill composed of sheet
materials having numerous fine holes in front of the left and right speakers is used as a speaker
sound. The release openings are deposited on the left and right sides of the formed bezel.
[0015]
The large flat panel display according to the present invention is the large flat panel display
according to claim 1, wherein the display screen is 60 inches or more.
[0016]
The large flat panel display according to the present invention is the large flat panel display
according to claim 1, wherein the video display screen is a liquid crystal display panel.
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[0017]
In the large flat type image display apparatus according to the present invention, in the large flat
type image display apparatus according to claim 1, the left and right speakers respectively have
tweeters arranged in the middle, and squawkers are provided above and below the tweeters. It is
arranged.
[0018]
According to the present invention, the sound emitting surfaces of the left and right speakers are
inclined inward at a predetermined angle with respect to the image display screen, and the front
direction of the image display screen is directed forward of each of the left and right speakers.
Since the speaker grill composed of the sheet material having innumerable micro holes is
provided, the speaker grill composed of the sheet material is as thin as, for example, 0.25 mm,
and the micro holes only serve as a sound discharge port. Without restricting the direction of
emission, the sound from the sound emitting surface of the speaker is emitted as it is.
Therefore, the sound image is localized in a predetermined viewing range on the front surface of
the large-sized flat screen video display device, so that it is possible to hear an audio of good
sound quality.
[0019]
According to the present invention, since the speaker grille composed of the sheet material
facing the front direction of the image display screen is attached to the front of the left and right
sides of the bezel, the flat type in the front of the large flat panel display is maintained. There is
no loss in the design of the flat panel display.
[0020]
Hereinafter, an example of the best mode for carrying out the large flat panel display according
to the present invention will be described with reference to the drawings.
[0021]
1 is a cross-sectional view of the main part of this embodiment, FIG. 2 is a front view of a large
flat panel display according to this embodiment, FIG. 3 is a partial cross-sectional view of FIG. In
FIG. 3, reference numeral 10 denotes, for example, a 70-inch liquid crystal display panel which
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constitutes the large flat type image display apparatus main body of this embodiment.
[0022]
Further, in FIG. 1, FIG. 2 and FIG. 3, reference numeral 11 denotes a bezel of a plate-like
rectangular frame having an opening of substantially the same size as the liquid crystal display
panel 10 which is an image display screen. It is formed by injection molding of an ABS
(acrylonitrile butadiene styrene) resin and then coated with a gloss.
The bezel 11 is fixed to the front cabinet 12 as shown in FIG. 1, FIG. 2 and FIG.
[0023]
Further, in FIG. 1, FIG. 2 and FIG. 3, reference numeral 13 denotes a center cabinet of a plate-like
rectangular frame body made of a transparent member provided on the outer periphery of the
bezel 11, and this center cabinet 13 is made of transparent PC, for example. (Polycarbonate) A
resin is injection molded.
[0024]
The center cabinet 13 is fixed so as to be held between the front cabinet 12 and the rear cover
14, and the outer periphery of the center cabinet 13 is edged with the aluminum extrusion
material 15.
[0025]
In such a large flat screen image display apparatus as shown in FIG. 2, since the liquid crystal
display panel 10 which is an image display screen is surrounded by the transparent center
cabinet 13, the image display screen is viewed when the image display screen is viewed. Looks
like floating in the air, giving the viewer an open feeling in design.
[0026]
Moreover, in FIG. 2, 16 is a support leg which supports and fixes this large-sized flat type image
display apparatus.
[0027]
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In the present embodiment, as shown in FIG. 1 and FIG. 3, the left speaker 17L and the right
speaker 17R are provided on the left and right sides of the liquid crystal display panel 10 which
is a video display screen.
[0028]
In this example, the left and right speakers 17L and 17R are formed by injection molding of a
synthetic resin, respectively, and in the longitudinally elongated speaker boxes 18L and 18R,
respectively, as shown in FIG. A tweeter 17T for high-pitched sound is disposed, and mid-lowpitch scokes 17S1 and 17S2 are disposed above and below the tweeter 17T.
[0029]
In this case, the sound emission surfaces of the tweeter 17T and the upper and lower mid-lowscore scours 17S1 and 17S2 are made to be the same.
Although FIG. 4 shows an example of the right side speaker 17R, the left side speaker 17L is
similarly configured.
[0030]
When the vertically elongated speaker boxes 18L and 18R are attached to the left and right sides
of the liquid crystal display panel 10 which is an image display screen, first, as shown in FIG. 1
and FIG. The tip of the formed sound guiding tubular rib is made to abut.
Thereafter, as shown in FIG. 5, at a predetermined position on one side of the speaker box 18R
(18L), a boss 20 fixed at a predetermined position on the back chassis 19 of the liquid crystal
display panel 10 via a damper material 21 such as rubber. While fixing, the other side of the
speaker box 18R (18L) is fixed to a boss 22 planted at a predetermined position of the front
cabinet 12 via a damper material 23 such as rubber.
[0031]
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In FIG. 5, reference numerals 24 and 25 denote fixing screws for fixing the speaker box 18R
(18L) to the bosses 20 and 22, respectively.
In this case, it may be fixed via a washer or the like.
The fixed locations and the fixed numbers on one side and the other side of the speaker box 18R
(18L) can be selected as needed.
Although an example of the right speaker box 18R is shown in FIG. 5, the left speaker box 18L is
similarly configured.
[0032]
In fixing the speaker boxes 18L and 18R, in this example, as shown in FIG. 1, the sound emitting
surface f of each of the left speaker 17L and the right speaker 17R is placed against the front
surface of the liquid crystal display panel 10 which is an image display screen. Each is inclined
inward by a predetermined angle θ.
[0033]
In the present example, the predetermined angles θ inclining inward with respect to the front
surface of the liquid crystal display panel 10 which is an image display screen of the sound
emission surface f of the left and right speakers 17L and 17R are respectively 8 degrees and -8
degrees.
The predetermined angle θ inclined inward with respect to the front surface of the liquid crystal
display panel 10 which is the video display screen is determined based on the effective viewing
range.
[0034]
As in the present example, when the sound emission faces f of the left speaker 17L and the right
speaker 17R are respectively set at predetermined angles θ of 8 degrees and -8 degrees with
respect to the front surface of the liquid crystal display panel 10 that is an image display screen.
Then, when the liquid crystal display panel 10 is 70 inches, the sound radiated from the sound
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emitting surface f of the left and right speakers 17L and 17R is the front surface of the liquid
crystal display panel 10 which is a video display screen as shown in FIG. The sound image is
localized in a triangular area shown by oblique lines in FIG. 6 which intersects the intersection
point a with the left and right speakers 17L and 17R, and the area indicated by the oblique lines
is the effective viewing area It becomes.
[0035]
Therefore, the image display screen of the front center, which is the optimum viewing position of
the 70-inch image display screen which is this large flat screen image display device, that is,
about three times the height of approximately 1 m of the 70-inch liquid crystal display panel 10
The position b at a distance of 3 m is within this effective viewing range, and can listen to sound
of good sound quality.
[0036]
Further, in the present embodiment, sound emission openings through which sound passes as
shown in FIG. 7 at the corresponding portions of the left speaker 17L and the right speaker 17R
of the bezel 11 on the left and right sides of the liquid crystal display panel 10 which is a video
display screen. 11a, 11b, 11c are formed.
In FIG. 7, 11a is a sound emission opening of the sound from tweeter 17T, and 11b and 11c are
sound emission openings of the sound from squawkers 17S1 and 17S2.
[0037]
Although FIG. 7 shows an example of the bezel 11 of the portion corresponding to the right side
speaker 17R, the bezel 11 of the portion corresponding to the left side speaker 17L is similarly
configured.
[0038]
In FIG. 1, FIG. 2 and FIG. 3, 26L and 26R indicate the front direction of the liquid crystal display
panel 10 which is the video display screen in front of the left and right speakers 17L and 17R of
the liquid crystal display panel 10 which is the video display screen. It is a speaker grill that faces
you.
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[0039]
In this example, the speaker grills 26L and 26R are formed of, for example, a sheet material of
PET (polyethylene terephthalate) resin as shown in FIG. 1, FIG. 2, FIG. 8 and FIG. The panel 10
has an elongated rectangular shape about the height of which is extremely thin, for example,
0.25 mm, and this sheet material is provided with innumerable micro holes 26a.
The innumerable minute holes 26a of the sheet material are used as sound passing holes.
[0040]
The speaker grills 26L and 26R according to this example are, as shown in FIG. 1, FIG. 2, FIG. 3
and FIG. 9, in front of the left and right sides of the bezel 11 with substantially the same width
and length as the speaker grills 26L and 26R. A stepped portion 11d is formed.
Then, except for the sound emission openings 11a, 11b and 11c which pass the sound on the left
side and the right side of the left side and the right side of the step 11d on the front side of the
left side and the right side of the bezel 11, for example The grills 26L and 26R are adhesively
fixed.
Others are configured in the same manner as in the prior art.
[0041]
According to this embodiment, the sound emitting surfaces f of the left and right speakers 17L
and 17R are inclined inward at the predetermined angle θ with respect to the liquid crystal
display panel 10 which is an image display screen.
Then, at the same time, a speaker composed of a sheet material having innumerable micro holes
26a facing the front direction of the liquid crystal display panel 10 in front of the left and right
speakers 17L and 17R with respect to the liquid crystal display panel 10. Grills 26L and 26R are
provided.
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As a result, the speaker grills 26L and 26R made of sheet material are as thin as, for example,
0.25 mm, and the minute holes 26a only serve as sound outlets and do not restrict the sound
emission direction, so the sound emitting surface of the speakers The sound from can be emitted
as it is.
[0042]
Therefore, as shown in FIG. 6, the sound radiated from the sound emitting surface f of the left
and right speakers 17L and 17R intersects at the position of the screen center on the front
surface of the liquid crystal display panel 10 which is an image display screen. The sound image
is localized in the range of a triangle shown by oblique lines in FIG. 6 connecting the left and
right speakers 17L and 17R, and the range indicated by the oblique lines becomes the effective
viewing range.
[0043]
In this example, it is assumed that the respective sound emitting faces f of the left speaker 17L
and the right speaker 17R are set to 8 degrees and 8 degrees respectively with respect to the
front surface of the liquid crystal display panel 10 which is a video display screen.
In this case, when the liquid crystal display panel 10 is 70 inches, the sound radiated from the
sound emission surface f of the left and right speakers 17L and 17R is the screen center of the
front surface of the liquid crystal display panel 10 as shown in FIG. It crosses at the position of
about 6m.
Then, the sound image is localized in the range of a triangle shown by oblique lines in FIG. 6
connecting the intersection point a with the left and right speakers 17L and 17R, and the range
shown by the oblique lines becomes the effective viewing range.
[0044]
Therefore, the image display screen of the front center, which is the optimum viewing position of
the 70-inch image display screen which is this large flat screen image display device, that is,
about three times the height of approximately 1 m of the 70-inch liquid crystal display panel 10
The position b at a distance of 3 m is within this effective viewing range, and can listen to sound
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of good sound quality.
[0045]
Further, according to the present embodiment, the speaker grills 26L and 26R made of sheet
material facing the front direction of the liquid crystal display panel 10 which is an image display
screen are attached to the step 11d on the front surface of the left and right sides of the bezel 11.
Therefore, the flat type in the front of the large flat type image display device is maintained, and
the design of the large flat type image display device is not damaged.
[0046]
In the above example, the tweeter 17T for high-pitched sound is disposed in the middle in the
vertical direction as the left and right side speakers 17L and 17R, and the mid-low-pitch scousers
17S1 and 17S2 are disposed above and below the tweeter 17T. Of course, various configurations
can be adopted instead according to the demand.
[0047]
Further, it goes without saying that the present invention is not limited to the above-described
example and that various other configurations can be adopted without departing from the scope
of the present invention.
[0048]
It is a cross-sectional view of the principal part of the example of the best mode for carrying out
the large flat type image display device of the present invention.
FIG. 1 is a front view of an example of a best mode for carrying out a large flat panel display
according to the present invention.
FIG. 1 is a partially cutaway top view of an example of a best mode for carrying out a large flat
panel display according to the present invention.
It is a front view which shows the example of arrangement | positioning of a speaker.
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It is a sectional view showing an example of attachment of a speaker box.
FIG. 2 is a diagram for describing the present invention.
It is a front view which shows the example of the principal part of a bezel.
It is a front view which shows the example of the principal part of a speaker grille.
It is a sectional view showing an example of an important section of a speaker grill.
It is sectional drawing which shows the example of the principal part of the conventional speaker
grille.
Explanation of sign
[0049]
DESCRIPTION OF SYMBOLS 10 ... Liquid crystal display panel, 11 ... Basil, 11a, 11b, 11c ... Sound
emission opening, 11d ... Step difference part, 12 ... Front cabinet, 13 ... Center cabinet, 14 ... Rear
cover, 15 ... Aluminum extrusion material, 16 ... Supporting leg, 17L: left side speaker, 17R: right
side speaker, 18L, 18R: speaker box, 19: back chassis, 20, 22: boss, 26L, 26R: speaker grille
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