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JP2008132161

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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
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DESCRIPTION JP2008132161
A speaker such as a subwoofer is disposed at an unobtrusive position of a storage rack. In a
storage rack capable of storing an audio device, a subwoofer, a top plate portion for supporting
the audio device, at least two leg portions for holding the top plate portion, and a top plate
portion. A shelf plate portion 40 joined in parallel with and perpendicular to the side surfaces of
the leg portions 20a and 20b in a state in which the distance from the top plate portion 30 can
be changed. And the speaker accommodating part 11 suspended by the back surface of the shelf
board part 40 was provided, and the speaker accommodating part 11 was shifted by the
predetermined space | interval in the depth direction of the shelf board part, and was arrange |
positioned. [Selected figure] Figure 4
Storage rack
[0001]
The present invention relates to a storage rack in which speakers such as subwoofers are
incorporated.
[0002]
2. Description of the Related Art Conventionally, there is known an AV (Audio-Video) rack in
which a television receiver or an audio device or the like can be installed or stored, and a
speaker, an amplifier device, and the like are integrated.
10-05-2019
1
In recent years, home theaters where you can enjoy movies with high quality screens and sound
quality at home have become widespread, and audio devices such as amplifier devices and
speakers installed in AV racks have become compatible with 5.1ch or more. .
[0003]
In order to create a 5.1-ch surround playback environment, it is necessary to have speakers for
the front left and right, rear left and right, and center, and a subwoofer that plays only the bass
range.
[0004]
Patent Document 1 discloses a stand device provided with a space for disposing a subwoofer.
JP 2005-303479 A
[0005]
By the way, the subwoofer in charge of 0.1ch of the 5.1ch generates air resonance and resonance
using the bass reflex duct and reproduces the deep bass, so the space for making the air resonate
and resonate. Need. In other words, in order to reproduce sufficient bass, the subwoofer must be
of a somewhat large size. Therefore, when the subwoofer is mounted on the storage rack as
described above, its presence is inconspicuous and leads to design restrictions.
[0006]
FIG. 10 is a front view showing a configuration example of a conventional AV rack 200 in which
a subwoofer is incorporated. The AV rack illustrated in FIG. 10 includes a top plate portion 213
on which a television receiver or the like can be installed, legs 212a and 212b supporting the top
plate 213, and a shelf board passed between two legs. And a subwoofer storage portion 202
provided with the subwoofer unit 201 at the right end.
[0007]
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2
In the AV rack 200 shown in FIG. 10, the ratio occupied by the subwoofer storage unit 202 is
large, the presence of the subwoofer storage unit 202 is noticeable, and the storage space for
installing audio devices such as a DVD (Digital Versatile Disc) recorder is compressed. It has been
In addition, in order to make the subwoofer inconspicuous, a storage rack in which the
subwoofer unit 201 is disposed on the back as shown in FIG. 11 is also emerging. 11 (a) is a
front view of the storage rack 200, and FIG. 11 (b) is a rear view of the storage rack 200.
[0008]
In the front view of FIG. 11 (a), although the subwoofer storage part 202 is arrange | positioned
on the left side, only the subwoofer storage part 202 can be seen from the user, and the
subwoofer unit stored in is not visible. is there. FIG. 11B is a rear view, and it can be seen that the
subwoofer unit 201 is directed to the side opposite to the direction in which the user is (the front
side of FIG. 11A).
[0009]
However, as shown in FIGS. 11A and 11B, when the subwoofer unit 201 is disposed on the back,
the reproduction frequency band of the subwoofer unit 201 and the reproduction frequencies of
other speakers (not shown) There was a possibility that the connection with the band would be
worse. In the state where the subwoofer unit 201 is disposed on the back side, in order to
improve the connection between the respective bands, it is necessary to extend the frequency
band reproduced from the speaker or subwoofer unit 201 other than the subfer. Although it is
possible to solve this problem by increasing the volume of the speaker storage unit provided with
the speaker, it is preferable to increase the size of the provided audio device in an AV rack for
storing audio devices and the like. Absent.
[0010]
The present invention has been made in view of the foregoing, and it is an object of the present
invention to provide a storage rack disposed at an inconspicuous position without losing the
sound quality output from a speaker such as a subwoofer.
[0011]
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3
According to the present invention, a storage rack capable of storing an audio device is provided
with a speaker storage portion and a top plate portion for supporting the audio device.
Moreover, the shelf board part joined in the state which can change the space | interval with a
top-plate part so that the space | interval with a top-plate part can be changed perpendicularly |
vertically with respect to each side of a leg parallel to a top plate part and at least 2 legs holding
a top plate part. Equipped with Then, the speaker storage portion is suspended on the back
surface of the shelf portion, and the speaker storage portion is disposed so as to be shifted by a
predetermined distance in the depth direction of the shelf portion.
[0012]
As a result, the speakers such as the subwoofer are disposed behind the lower portion of the
shelf board, and it becomes difficult to see the speakers such as the subwoofer from the front of
the storage rack.
[0013]
In this case, although the speaker storage portion is disposed slightly behind the front of the
storage rack, the sound quality output from the subwoofer or the like is impaired because a
member or the like for concealing the speaker storage portion is not used. There is no
[0014]
According to the present invention, it can be arranged in an inconspicuous position without
impairing the sound quality output from a speaker such as a subwoofer.
[0015]
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1
to 9.
The present embodiment is an AV rack including an amplifier for amplifying sound of a television
receiver and an audio device, a speaker unit for outputting sound, and a subwoofer unit for
reproducing sound in a band of about 40 Hz to 200 Hz Rack)).
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4
[0016]
In FIG. 1, the AV rack 100 includes a top plate 30 on which, for example, a television receiver or
the like can be placed, and the top plate 30 is held by legs 20 a and 20 b.
And the shelf board part 40 has passed between the leg parts 20a and 20b.
A plurality of shelf receivers (not shown) are provided at predetermined intervals on the side
surfaces of the legs 20a and 20b, and the shelf unit 40 can freely move up and down between
the plurality of shelf receivers. Below the shelf plate portion 40, a subwoofer box (subwoofer
storage portion) 11 incorporating the subwoofer units 10SW-a and 10SW-b is provided. The
subwoofer box 11 is held so as to be suspended by the subwoofer holding portions 42a and 42b
from the back surface (lower surface) of the shelf plate portion 40. Since the subwoofer box 11 is
disposed at the lower part of the shelf board portion 40, it has a horizontally elongated shape in
which the height is lowered. FIG. 2 is a view showing the AV rack 100 in a perspective view. In
the state of FIG. 2, the subwoofer box 11 is hidden from the outside, and the subwoofer box 11 is
indicated by a broken line.
[0017]
In addition, as shown in FIG. 1, the AV rack 100 of this example is a voice from a television
receiver disposed on the top plate 30 and a voice from an audio device or the like installed on the
shelf plate 40. And a speaker unit for outputting the sound amplified by the amplifier device 50.
The speaker unit includes a left rear speaker 10SL, a left front speaker 10FL, a center front
speaker 10FC, a right front speaker 10FR, and a right rear speaker 10SR, all of which are
disposed in the top plate portion 30. By providing the subwoofer box 11 incorporating the
subwoofer units 10SW-a and 10SW-b in addition to these speaker units in the lower part of the
shelf board portion 40, it is possible to construct a 5.1 ch surround environment around the user
It becomes possible.
[0018]
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5
Next, an example of the internal configuration of the AV rack 100 of this embodiment will be
described with reference to FIG. First, a reproduced audio signal output from an audio device or
the like is supplied from the signal source 21 to the amplifier device 50. In the amplifier device
50, the audio signal of the subwoofer left channel, the audio signal of the subwoofer right
channel, the audio signal of the center channel, and the left front for each of the preamplifiers
2SW-b, 2SW-a, 2FC, 2FL, 2FR, 2SL, and 2SR. An audio signal of a channel, an audio signal of a
right front channel, an audio signal of a left rear channel, and an audio signal of a right rear
channel are supplied. The audio signal of each channel amplified by the preamplifiers 2SW-b,
2SW-a, 2FC, 2FL, 2FR is supplied to the amplifiers 5SW-b, 5SW-a, 5FC, 5FL, 5FR, respectively,
and the speakers 10SW-b, 10SW Audio is output from -a, 10FC, 10FL, 10FR.
[0019]
The audio signal amplified by the preamplifier 2SL for the left rear channel and 2SR for the right
rear channel is supplied to the sound image processing circuits 4SL and 4SR that perform virtual
sound image processing, and the virtual sound image processing is performed by the sound
image processing circuits 4SL and 4SR. Applied. The audio signals output from the sound image
processing circuits 4SL and 4SR are supplied to the amplifiers 5SL and 5SR, and sound is output
from the speakers 10SL and 10SR. The processing in the sound image processing circuits 4SL
and 4SR, the amplification control of the amplifiers 5SW-b to 5SR, and the like are performed
based on predetermined calculations and control performed by the control unit 3.
[0020]
Next, an example of the attachment position of the subwoofer box 11 will be described with
reference to FIG. FIG. 4 is a view of the AV rack 100 viewed from the side. In the example of FIG.
4, the television receiver 60 is disposed on the top plate portion 30 of the AV rack 100. In FIG. 4,
in order to make the inside of the AV rack 100 intelligible, the state in which the member
covering the side surface of the AV rack 100 is removed is shown.
[0021]
In FIG. 4, the subwoofer box 11 is disposed on the back side as viewed from the user e1. The
reason why the subwoofer box 11 is disposed on the back side when viewed from the user e1 is
to make the subwoofer box 11 less visible to the user e1, and the arrangement position of the
10-05-2019
6
subwoofer box 11 in the front-rear direction is the height of the line of sight of the user
Calculated based on the distance of
[0022]
For example, the sum of the height of the AV rack 100 and the half height of the television
receiver 60 (= the height assumed by the user's eyes) is 90 cm, and the user e1 is at a distance of
2 m from the television receiver 60 In this case, the distance from the center position of the
television receiver 60 to the foremost surface of the AV rack 100 (18 cm in this example) and the
length from the shelf 40 to the floor (in this example) (Approximately 42 degrees) when the user
e1 drops the line of sight to the lower part of the shelf plate 40 from 15 cm), and the distance x
reached by the line of sight of the user e1 can also be calculated (of the leg 20a When the
thickness in the depth direction is 5 cm, it is about 11 cm). If the subwoofer box 11 is disposed
on the back side even a little from the calculated value of x, it is calculated that the subwoofer
box 11 can not be seen from the user e1.
[0023]
As described above, since the subwoofer box 11 is provided at the lower portion of the shelf
plate portion 40 at a position spaced by a predetermined distance in the depth direction, the
subwoofer box 11 is difficult to see from the user e1. This makes it possible to eliminate design
restrictions on the AV rack 100 caused by the presence of the subwoofer.
[0024]
Further, since the subwoofer units 10SW-a and 10SW-b are disposed on the front side, which is
the direction in which the user is present, the sound emitted from the subwoofer units 10SW-a
and 10SW-b is in the direction in which the user is located. It is output directly and there is no
loss of the sound quality.
[0025]
Further, since the subwoofer units 10SW-a and 10SW-b are respectively arranged at equal
positions from the center of the AV rack 100, the band of 40 Hz to 200 Hz to be output from the
subwoofer units 10SW-a and 10SW-b of this example Among them, sound in a band of 150 Hz or
more, which is said to have directivity, will be output in a well-balanced manner.
10-05-2019
7
[0026]
In this case, in order to make the subwoofer box 11 less visible to the user e1, as shown in FIG. 5,
the blind plate 21 may be provided directly below the front side of the shelf board portion 40.
This makes it difficult for the line of sight of the user e1 to reach, making it possible to make the
presence of the subwoofer box 11 less noticeable.
[0027]
Next, an example of joining of the subwoofer box 11 and the shelf board portion 40 will be
described with reference to FIG.
In FIG. 6, a reinforcing member 41 as a structure for holding the strength of the AV rack 100 is
provided under the shelf plate portion 40, and the subwoofer box 11 is provided by the
subwoofer holding portions 42 a and 42 b attached to the reinforcing member 41. Is suspended
and held.
[0028]
As described above, since the subwoofer box 11 is not directly adhered to the legs 20a or 20b,
the vibration generated by the subwoofer unit in the subwoofer box 11 is installed on the AV
rack 100 or an audio stored in the rack. It will be difficult to communicate to devices.
[0029]
Alternatively, as shown in FIG. 7, the subwoofer box 11 may be held by only the subwoofer
holders 42a 'and 42b'.
In this example, subwoofer holding portions 42a 'and 42b' fixed to the legs 20a and 20b support
the subwoofer box 11. Since the speaker box such as the subwoofer box 11 is originally
structured to have strength, the subwoofer box 11 and the subwoofer holders 42 a and 42 b
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8
function as the structure of the AV rack 100 by adopting such a configuration. It will be. For this
reason, it becomes unnecessary to newly provide a structure for reinforcing the AV rack 100,
and the manufacturing cost of the AV rack 100 can be reduced.
[0030]
As described above, when using the robustness of the speaker box such as the subwoofer box 11
or the like to function as the structure of the AV rack 100, the member disposed below the shelf
board portion 40 is not the subwoofer box 11. It may be a speaker box that houses other
speakers such as a center speaker.
[0031]
Although the subwoofer units 10SW-a and 10SW-b are arranged on the front in the embodiment
described above, the subwoofer units 10SW-a and 10SW-b are shown in FIG. They may be
disposed laterally in the opposite directions.
In this case, by providing the reflection plates 16a and 16b on the side surfaces of the legs 20a
and 20b, the sound output from the subwoofer units 10SW-a and 10SW-b can be reflected in the
direction in which the user is positioned. Further, in this case, if the bass reflex ports 15a and
15b are arranged on the front side, the voice in the low band is output in the direction in which
the user is located.
[0032]
In the embodiment described above, an example in which the speaker unit other than the
subwoofer is built in the top plate portion 30 of the AV rack 100 has been described. However,
even if it is applied to the AV rack 100 having only the subwoofer Good. An exemplary
configuration of the AV rack in this case will be described with reference to FIG.
[0033]
Similarly to the AV rack 100 in the embodiment described above, the AV rack 100 'of FIG. 9 also
includes a top plate portion 30' on which a television receiver and the like can be arranged, and
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9
the top plate portion 30 'has both ends Are held by the legs 20a 'and 20b'. A subwoofer box 11
provided with subwoofer units 10SW-a and 10SW-b is provided below the shelf plate portion 40
'passed between the legs 20a' and 20b '.
[0034]
That is, the AV rack 100 ′ in FIG. 9 is a rack provided with only the subwoofer box 11. In such
an AV rack 100 ', audio in a band other than the reproduction frequency band of the subwoofer
units 10SW-a and 10SW-b is, for example, a television receiver installed on the AV rack 100' (not
shown in FIG. 9). And the like, and output from a speaker provided to another device such as the
[0035]
Even when the configuration can not play back surround sound of 5.1 ch or more, it has been
practiced to expand the sound by expanding the subwoofer as a single unit. In this case, a
relatively large subwoofer box is I had to install somewhere. In such a case, if an AV rack 100
'built in the subwoofer box 11' as illustrated in FIG. 9 is used, it can not be reproduced from a
normal speaker unit without considering the installation location of the subwoofer It becomes
possible to reproduce the sound of the range.
[0036]
In the above-described embodiment, as described with reference to FIGS. 6 and 7, the subwoofer
box 11 is fixed to the reinforcing member 41 or the legs 20a and 20b via the subwoofer holding
parts 42a and 42b. Alternatively, it may be fixed directly to the shelf board portion 40 via the
subwoofer holding portions 42a and 42b.
[0037]
In the embodiment described above, two holding portions for holding the subwoofer box 11 are
provided on the left and right, but the holding portions are not limited to two points, and a
plurality of points such as three points are provided. It is good also as composition held by.
[0038]
Further, in the embodiment described above, the configuration in which nothing is provided on
the front surface of the speaker unit including the subwoofer has been described, but a speaker
10-05-2019
10
cross may be provided.
[0039]
Also, the legs 20a and 20b of the AV rack 100 may function as a pressure board.
[0040]
It is a front view showing an example of composition of AV rack by a 1 embodiment of the
present invention.
It is a perspective view showing an example of composition of AV rack by a 1 embodiment of the
present invention.
It is a block diagram showing an example of an internal configuration of AV rack by one
embodiment of the present invention.
It is a side view showing an example of a subwoofer box attachment position by one embodiment
of the present invention.
It is a side view showing an example of AV rack composition at the time of blind board
attachment according to other forms of the present invention. It is a front view which shows the
example of attachment of the subwoofer box by one embodiment of this invention. It is a front
view which shows the example of attachment of the subwoofer box by other embodiment of this
invention. It is a front view which shows the example of the attachment position of the subwoofer
unit by the other form of this invention. It is a front view showing an example of composition of
AV rack by other forms of the present invention. It is a front view which shows the structural
example of the conventional AV rack. It is the front view and rear view showing the example of
composition of the conventional AV rack.
Explanation of sign
[0041]
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11
DESCRIPTION OF SYMBOLS 1 ... Signal source, 2FC-2SW ... Preamplifier, 3 ... Control part, 4SL,
4SR ... Sound image processing circuit, 5FC-5SW ... Amplifier, 10FC ... Center front speaker unit,
10FL ... Left front speaker unit, 10FR ... Right front speaker unit, 10SL ... Left rear speaker unit,
10 SR ... Right rear speaker unit, 10 SW ... Sub woofer unit, 11 ... Sub woofer box, 15 ... Bass
reflex port, 16 ... Reflector, 20 ... Legs, 21 ... Blindfolds, 30 ... Top plate, 40 ... Shelf portion 41, ...
Reinforcement, 42 ... Subwoofer holding portion, 50 ... Amplifier device, 60 ... Television receiver,
100 ... AV rack
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