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JPH10313493

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JPH10313493
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
audio apparatus for reproducing the sound of an image display apparatus having an image
display surface of a television set of a computer.
[0002]
2. Description of the Related Art Examples of image display devices having an image display
surface include television sets and computer displays. In such an image display device, a speaker
device for producing a sound related to an image is in widespread use, but recently, a speaker
device of this type capable of reproducing sound in stereo has appeared It has been done. That is,
such a speaker apparatus for stereo is an apparatus as shown in FIGS. 9 and 10, and for example,
a left speaker 301 and a right speaker 302 are respectively provided on the left and right sides
of a cathode ray tube (CRT) 300 of a television set. It is supposed to be put.
[0003]
However, the left speaker 301 and the right speaker 302 are arranged, for example, on a desk
separately from the cabinet 303 having a cathode ray tube as described above. In the case of the
301 and the right speakers 302, the spread of sound in the middle and high tone parts where a
clear feeling can be obtained with respect to their axes 304 and 305 is at most about ± 30 °.
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Although the necessary area for sound of the left speaker 301 and the right speaker 302 needs
to be formed between the position of the user M looking at the cathode ray tube 300 from the
front and the screen 306 of the cathode ray tube 300, as shown in FIG. The left speaker 301, the
right speaker 302, and the axes 304 and 305, which are placed like this, are parallel to the axial
direction of the cathode ray tube 300, and the arrangement method of such left speaker 301 and
right speaker 302 is a conventional concert. It is an infinite space that assumes a hall. For this
reason, in the arrangement state of the speaker in FIG. 9, the sound is emitted to the unnecessary
area in the area between the cathode ray tube 300 and the user M. Therefore, since the sound of
these left speaker 301 and right speaker 302 is emitted to the people around, it is possible to
cause trouble.
[0004]
Also, the arrangement of the left speaker 301 and the right speaker 302 shown in FIG. 10 is in a
state where the user M has appropriately arranged these speakers, and the arrangement state of
the speakers is not managed by the user. It is. In this case, the clear middle-to-high-pitched sound
is not easily transmitted to the area between the user M and the cathode ray tube 300, which
often causes inconvenience to the surrounding people. That is, this is because the axis 304 of the
left speaker 301 and the axis 305 of the right speaker 302 point in a totally disorderly direction.
[0005]
In any of the speaker arrangement methods shown in FIGS. 9 and 10, for example, the left
speaker 301 and the right speaker 302 are placed on a desk carrying a cabinet 303 of a
computer or television set. In addition, since it is necessary to place a pointing device such as a
keyboard or a mouse, the left speaker 301 and the right speaker 302 can not be enlarged. In
addition, when the left speaker 301 and the right speaker 302 are fixed with respect to the case
where the cabinet is attached to the cabinet 303, the style of the left speaker 301 and the right
speaker 302 can not be sufficiently secured. Moreover, simply fixing the left speaker 301 and the
right speaker 302 to the cabinet 303 as shown in FIG. 9 causes the axes 304 and 305 of the
respective speakers to be parallel to the axis of the cathode ray tube 300. Because the sound
from, especially the high-pitched sound is emitted to infinity, it will cause trouble to the
surrounding people.
[0006]
Therefore, an object of the present invention is to provide an acoustic device capable of reliably
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guiding the sound generated from the speaker unit in the area between the image display device
and the user of the image display surface.
[0007]
SUMMARY OF THE INVENTION In order to solve the above problems, the present invention is an
acoustic device for reproducing sound of an image display device having an image display
surface, which is disposed on the first side of the image display device. A first speaker unit, and a
second speaker unit disposed on a second side of the image display device opposite to the first
side, the first axis of the speaker disposed on the first speaker unit The distance between the
image display surface and the position of the intersection point of the second axis of the speaker
disposed in the second speaker unit and the image display surface is 0.5 to 2 times the width of
the image display surface. Achieved by the device.
[0008]
In the present invention, the first speaker unit is disposed on the first side of the image display
device.
On the other hand, the second speaker unit is disposed on the second side of the image display
device.
The second side is opposite to the first side. The distance between the image display plane and
the intersection point of the second axis of the first axis of the speaker in which the first speaker
section is arranged and the second axis of the speaker is 0 in width of the image display plane. .5
to 2 times are set. By doing this, the respective sounds generated from the first speaker unit and
the second speaker unit can be reliably guided between the image display surface of the image
display device and the user.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present
invention will now be described in detail with reference to the attached drawings. The
embodiment described below is a preferable specific example of the present invention, and
therefore, various technically preferable limitations are given. However, the scope of the present
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invention particularly limits the present invention in the following description. As long as there is
no statement of purport, it is not limited to these forms.
[0010]
1 to 3 show an acoustic device 10 of the present invention. 1 and 2, the acoustic device 10
includes the image display device storage unit 12, the first speaker unit 14, the second speaker
unit 16, and the like, but the acoustic device 10 is illustrated in FIGS. 1 and 2. In the embodiment
of the present invention, the image display device storage unit 12 is made to correspond to the
unit of the personal computer, and the image display device storage unit 12 is a portion for
storing the image display device 20 of the computer 18.
[0011]
The first speaker unit 14 is disposed on the first side 22 of the image display device 20 of the
image display device storage unit 12, and the second speaker unit 16 is disposed on the second
side 24 side of the image display device 20. ing. The first speaker portion 14 and the second
speaker portion 16 have a line symmetrical shape when viewed from the direction of arrow Z in
FIGS. 1 and 2 with respect to the center line CL of the acoustic device 10. The acoustic device 10
is supported on a desk 38 using four thin legs 30, 32, 34, 36 in the embodiment of FIGS. That is,
a space 38 b is formed between the acoustic device 10 and the upper surface 38 a of the desk
38. The main body 40 of the computer 18 is disposed in the space 38 b. In front of the main
body 40, a keyboard 42 and a mouse 44 as a pointing device are placed on the upper surface
38a of the desk 38.
[0012]
The first speaker unit 14 has a left speaker 50, and the second speaker unit 16 has a right
speaker 52. The attachment surface 54 of the left speaker 50 of the first speaker unit 14 is
directed to the center line CL of the acoustic device 10 as shown in FIGS. 2 and 3 and, similarly,
of the attachment surface 56 of the second speaker unit 16. It is directed to the center line CL of
the acoustic device 10. That is, the first axis 58 of the left speaker 50 and the second axis 60 of
the right speaker 52 intersect at the intersection position 62 on the center line CL of the acoustic
device. The intersection position 62 is located in an area AR between a user M who is a user of
the computer 18 and the image display surface 20a of the image display device 20, as shown in
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FIG. In order to make it possible to position the intersection point position 62 with respect to the
area AR in which the sound should be mixed, as shown in FIGS. 4 and 5, the second speaker 50
disposed in the first speaker portion 14 The distance between the image display surface 20a and
the intersection point position 62 of the second shaft 60 of the right speaker 52 disposed in the
second speaker portion 16 with the one axis 58 is the width L of the image display surface 20a.
It is set to 0.5 times to 2 times.
[0013]
As described above, when the distance between the intersection point position 62 and the image
display surface 20a is smaller than 0.5 times the width L of the image display surface 20a, the
user M approaches the image display surface 20a too much, and the image display surface 20a is
It is difficult for the user M to operate the keyboard 42 and the mouse 44 while it is difficult to
see the contents of the image. In addition, when the distance between the intersection point
position 62 and the image display surface 20a exceeds twice the width L of the image display
surface 20a, the user M is too far from the image display surface 20a. As the user M is separated
from the image display surface 20a, the display content of the image display surface 20a
becomes difficult to confirm. Further, in this case, since the first axis 58 and the second axis 60
become close to parallel to the center line CL of the acoustic device 10, there is also a possibility
that the sound is dispersed to the outside.
[0014]
As shown in FIGS. 4 and 5, since the distance between the intersection point position 62 and the
image display surface 20a is 0.5 to 2 times the width L of the image display surface 20a, as
shown in FIG. Since the intersection point position 62 can be arranged in the area AR, the sound
with high intelligibility falls within the area AR of the user M, and the person with low
intelligibility (low) reaches other people except the user M, Since the sound other than user M
can not be heard with high clarity, the situation of distraction is reduced. Also, although the
sound coming from the left speaker 50 and the right speaker 52 is stereo sound, the direction of
the sound is accurately managed also from the stereo effect, and the localization of the sound
image of the sound is changed by the user M casually. As a result, a sound image matching the
size of the image display surface 20a can be obtained at any time.
[0015]
As described above, the left speaker 50 and the right speaker 52 are fixed to the first speaker
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portion 14 and the second speaker portion 16 respectively at a distance exceeding the lateral
width L of the image display surface 20a, and these mounting surfaces (baffle plates) The
vibration directions of the diaphragms (for example, a cone-shaped diaphragm) of the left
speaker 50 and the right speaker 52 respectively attached to the mounting surface (baffle plate)
54 and 54 are the first shaft 58 and the second shaft 60.
[0016]
In FIGS. 1 and 2, since the acoustic device 10 is supported by the four thin legs 30, 32, 34, and
36 with respect to the upper surface 38a of the desk 38, for example, the bottom surface of the
second speaker portion 16 Between the upper surface 38a of the desk 38 is open.
Therefore, for example, the operation area of the mouse 44 can be secured at the open portion,
and a space where the user M can operate the mouse 44 at the upper surface 38 a of the desk 38
can be secured.
[0017]
Further, as shown in FIG. 2 and FIG. 3, since the intersection position 62 is disposed in the area
AR, the high and medium pitch range with high clarity is transmitted around the user M and not
transmitted far beyond necessary. It can be locked so that the sound of middle and high range is
not emitted.
[0018]
In FIGS. 1 and 2, an image display device 20, such as a cathode ray tube, is preferably disposed
within the image display housing 12, preferably in a snug fit.
The reason why the image display device 20 is fitted into the space of the image display device
storage unit 12 in this manner is to prevent the sound from the left speaker 50 and the right
speaker 52 from being leaked to the rear. Further, it is desirable that the first speaker unit 14
and the second speaker unit 16 be integrated with the image display device storage unit 12.
[0019]
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FIG. 4 shows the case where the intersection position 62 and the image display surface 20a are
0.5 times the width L of the image display surface 20a as described above, but the attachment
surfaces 54 and 56 at this time are The angle θ formed with respect to the image display
surface 20a is, for example, about 45 °. In this case, the on-axis angle with respect to the first
axis 58 and the second axis 60 in which the highest sound of the left speaker 50 and the right
speaker 52 is clear and is about ± 30 °, and the range of about ± 30 ° is It becomes almost
close to the width of the shoulders of the user M, and the high-pitched sound with high clarity in
the middle and high range that can be seen behind from the shoulder is reduced. Therefore, the
high definition sound of the middle and high tone range is an area substantially formed between
the image display surface 20a and the shoulder of the user M, and the middle and high tone
range hardly reaches people other than the user M.
[0020]
FIG. 5 shows a case where the distance between the intersection point position 62 and the image
display surface 20a is twice the width L of the image display surface 20a, and the user M looks at
the image display surface 20a at a position slightly apart Is the case. Even in this case, with
respect to the first axis 58 and the second axis 60, a region of middle to high range of ± 30 °
each and a high sound pressure is mostly blocked by the user M, so a clear area AR is an area
shown in the vicinity of the user M, and it is difficult for the surrounding people to get in the
way. By intentionally using the left speaker 50 and the right speaker 52 having narrow
directivity, it is possible to prevent the area AR2 from leaking further.
[0021]
FIG. 6 shows another embodiment of the acoustic device of the present invention, and the
acoustic device 100 has an image display device storage unit 112, a first speaker unit 114, a
second speaker unit 116, and the like. . The first speaker unit 114 and the second speaker unit
116 are connected by, for example, four connecting rods 140, 141, 142, 143. The connecting
rods 140 to 143 are parallel to each other and located at four corner positions of the first
speaker portion 114 and the second speaker portion 116. The image display device 120 of the
computer 118 is accommodated in the space part of these connecting rods 140 to 143. The
computer 118 is a tower type computer, and the tower main body 140 is placed upright next to
the second speaker unit 116. The first speaker unit 114 and the second speaker unit 116 are
placed upright with a gap from the upper surface 138 a of the desk 138 by the four legs 130,
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132, 134, 136. A keyboard 149 and a mouse 151 are placed on the desk 138a.
[0022]
Two-way left speakers 50 a and 50 b are attached to the attachment surface (baffle plate) 154 of
the first speaker unit 114. In addition, two-way right speakers 52 a and 52 b are attached to the
second speaker unit 116. The first axis 158 of the left speakers 50a and 50b and the second axis
160 of the right speakers 52a and 52b intersect at an intersection position 62. The first speaker
portion 114 further has a shroud 170, and similarly, the second speaker portion 116 also has a
shroud 172. By providing these shrouds 170 and 172, the sounds emitted from the left speakers
50a and 50b and the right speakers 52a and 52b can be reliably transmitted to the user M, and
leakage of sound to the outside can be prevented. .
[0023]
Next, FIG. 7 shows still another embodiment of the acoustic device of the present invention. The
acoustic device 200 of FIG. 7 includes an image display device storage unit 212, a first speaker
unit 214, and a second speaker unit 216. The first speaker unit 214 and the second speaker unit
216 are detachably connected by, for example, three connecting rods 240, 241, 242. An image
display device 220 is disposed in the image display device storage unit 212. The three-way left
speakers 250a, 250b, and 250c of the first speaker unit 214 are disposed at the left and right
positions of the image display surface 220a of the image display device 220, and the three-way
right speakers 252a, 252b, and 252c is arranged. The first axis 258 of the left speakers 250a to
250c and the second axis 260 of the right speakers 252a to 252c intersect at the intersection
position 62 on the front side of the image display surface 220a.
[0024]
The image display device 220 may be a television set using a normal cathode ray tube or a liquid
crystal display device, or another image projector may be an image projector of an image
projection type. Both the first speaker unit 214 and the second speaker unit 216 adopt a threeway system using dedicated speakers for bass, medium and treble.
[0025]
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It is preferable that the image display device 220 be in close contact with the first speaker unit
214 and the second speaker unit 216 as much as possible. This is to prevent noise, and the
image display device 220 is placed directly on the floor. Instead of using several connecting rods,
it is also possible to adopt other methods or to change the number of connecting rods.
[0026]
FIG. 8 shows still another embodiment of the acoustic device of the present invention. An
acoustic device 300 according to the embodiment of FIG. 8 includes an image display device 312,
a first speaker portion 314, and a right speaker portion 316. The image display device 312 is a
portion that projects the image light projected at a position away from the projector device 340.
The first speaker section 314 is disposed on the left side of the image display surface 312a of the
image display device 312. The second speaker unit 316 is disposed. The first axis 358 of the left
speaker 350 of the first speaker portion 314 and the second axis 360 of the right speaker 352 of
the second speaker portion 316 intersect at the intersection position 62.
[0027]
The image display surface 312a is simply a planar plate that displays the image light IL. A user M
who is a viewer can view between the projector 340 and the image display device 312. In this
way, during viewing of the image light IL on the image display surface 312a, reflection of sound
on the wall behind the user M in particular is less likely to occur, and the sound can be heard
clearly. Further, instead of the image display surface 312 a in the embodiment of FIG. 8, a main
body of a normal stereophonic sound device may be disposed.
[0028]
As described above, the user M is an area formed between the image display surface and the user
by fixing and fixing the degree of freedom of the arrangement of the left and right speakers
conventionally used. By making the intersection position of the left and right speakers, the user
M can clearly hear the sound and can limit the leakage of the sound to the surroundings. When a
computer display, an image display, etc. are disposed at the center and speakers are provided on
the left and right, if the distance between the intersection position 62 and the image display
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surface is 0.5 to 2 times the width L of the image display surface High clarity sounds in the
middle to high range can be positioned between the user and the display, and the degree of
sound recognition is enhanced.
[0029]
The present invention is not limited to the above embodiment. In the other embodiments, the
speaker portion is formed in a relatively box-like shape, but it is of course possible to adopt an
oval or spherical shape or various shapes in cross section without being limited to a box-like
shape. Moreover, it is of course possible to adopt not only a circular speaker but also other types
of speakers.
[0030]
According to the present invention, it is possible to reliably guide the sound generated from the
speaker unit in the area between the image display device and the user of the image display
surface.
[0031]
Brief description of the drawings
[0032]
1 is a perspective view showing a preferred embodiment of the acoustic device of the present
invention.
[0033]
2 is a perspective view of the acoustic device of FIG.
[0034]
3 is a plan view showing the corresponding position between the acoustic device of FIG. 1 and
FIG. 2 and the user.
[0035]
4 is a plan view showing a case where the distance between the intersection of the first axis and
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the second axis of the speaker and the image display surface is 0.5 times the width of the image
display surface.
[0036]
5 is a plan view showing a case where the distance between the intersection of the first axis and
the second axis of the speaker and the image display surface is twice the width of the image
display surface.
[0037]
6 is a diagram showing another embodiment of the acoustic device of the present invention.
[0038]
7 shows another embodiment of the acoustic device of the present invention.
[0039]
8 is a perspective view showing still another embodiment of the acoustic device of the present
invention.
[0040]
9 is a diagram showing an acoustic device used in a conventional computer or the like, showing a
state in which the sound is directed in an infinite direction.
[0041]
10 is a view showing a state in which the direction of the sound is directed to any direction in the
acoustic device of FIG.
[0042]
Explanation of sign
[0043]
DESCRIPTION OF SYMBOLS 10 ... Acoustic device, 14 ... 1st speaker part, 16 ... 2nd speaker part,
20 ... Image display apparatus, 20a ... Image display surface, 50 ... Left speaker, 52 ... Right
speaker, 30, 32, 34, 36 ... Leg Part, 62: Intersection position, M: User, L: Width of image display
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surface.
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