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JPH0565196

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DESCRIPTION JPH0565196
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker system for a television receiver using a multi-channel audio reproduction system, and
more particularly to a method of installing a 3D audio system bass speaker.
[0002]
2. Description of the Related Art FIG. 4 is a perspective view of a television receiver having a
conventional multi-channel audio reproduction system disclosed in, for example, Japanese Utility
Model Application Publication No. 63-152376. In the figure, 1 is a cathode ray tube, 2 is a
cabinet in which the cathode ray tube 1 is disposed in the center on the front, right side speaker
3 for the right channel is provided on the front right side of the cabinet 2 Is provided. A bass
speaker 5 is provided below the Braun tube 1 disposed in the cabinet 2, that is, below the front
of the cabinet 2. 6 is a leg for supporting the television receiver, and 7 is an installation surface
on which the television receiver is installed.
[0003]
The conventional multi-channel audio reproduction type television receiver is configured as
described above, and considering the multi-channel audio reproduction method as a 3D audio
method, the right channel and left channel of the stereo audio signal are respectively It radiates
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from the right channel speaker 3 and the left channel speaker 4. In addition, the low frequency
band audio signal of the synthesized audio signal of the right channel and the left channel is
emitted from the low frequency speaker 5, and
[0004]
[0004] Since the conventional 3D audio system television receiver is configured as described
above, the front of the cabinet needs an area for installing a bass speaker, and the bass
augmentation is required. In the case of installing a large-diameter bass speaker advantageous
for the case, there is a problem that the area of the front of the cabinet is enlarged, and the whole
television receiver is enlarged.
[0005]
The present invention has been made to solve the above problems, and it is an object of the
present invention to provide a speaker system in which a large diameter bass speaker can be
installed without increasing the size of the entire television receiver.
[0006]
SUMMARY OF THE INVENTION The speaker system according to the present invention is
characterized in that a speaker for bass is installed on the bottom of a cabinet of a television
receiver having a multi-channel audio reproduction system, and a television receiver with a
plurality of legs. By supporting the whole, a space is provided between the television receiver
mounting surface and the cabinet bottom surface.
[0007]
Also, an acoustic radiation means is provided inside the television receiver cabinet, and the
acoustic radiation means is provided with an acoustic conductor which penetrates from the
acoustic radiation surface of the acoustic radiation means to the bottom of the cabinet and whose
central axis intersects the installation plane at an acute angle It is.
[0008]
Further, a partition plate is provided which is fixed to the bottom of the television receiver
cabinet and shields a part of the space between the installation surface and the cabinet bottom.
[0009]
[Operation] The speaker system according to the present invention is provided with the bass
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speaker at the bottom of the cabinet, and emits sound from the space between the TV receiver
installation surface and the bottom of the cabinet. You can install a large diameter bass speaker.
[0010]
Further, according to the method of guiding the sound of the bass speaker to the bottom of the
cabinet by sound conduction, the radiation sound of the bass speaker can be directed in any
direction by adjusting the angle at which the central axis of the sound conduction is incident on
the installation surface. It can be reflected to enable efficient acoustic radiation.
[0011]
Further, according to the method of providing the partition plate on a part of the bottom of the
cabinet, the sound of the bass speaker is prevented from being radiated in the unnecessary
direction, and the sound pressure at the listening position is increased.
[0012]
EXAMPLES Example 1
FIG. 1 is a sectional view showing an embodiment of the present invention, in which 8 is a bass
speaker attached to the bottom of a television receiver, and 9 is a speaker box to which the bass
speaker 8 is attached.
The other parts are the same as the above-described conventional apparatus, so the description
will be omitted.
[0013]
In the speaker system of the television receiver having the 3D audio system configured as
described above, the bass speaker 8 is provided on the bottom surface of the cabinet 2 and a
space between the installation surface 7 of the television receiver and the cabinet 2 is provided.
Emits sound from
[0014]
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Embodiment 2
FIG. 2 shows another embodiment of the present invention, in which the bass speaker 8 and the
speaker box 9 are installed inside the cabinet 2 and the radiated sound of the bass speaker 8 is
guided to the bottom of the cabinet 2 by the sound conductor 10. It is.
[0015]
In the second embodiment shown in FIG. 2, since the central axis of the sound conductor 10 is
incident at an acute angle θ with the installation surface 7, the radiation of the bass speaker 8
led to the sound conductor 10 is generated. The sound is reflected to the front of the cabinet 2
and efficient acoustic radiation is provided.
[0016]
Embodiment 3
FIG. 3 is a perspective view showing another embodiment of the present invention, and 11 is a
partition plate fixed to the bottom of the cabinet 2.
The sound radiated from the bass speaker 8 is shielded by the partition plate 11 to reduce the
sound pressure radiation in the unnecessary direction.
[0017]
By the way, in the above description, the present invention has been described about the speaker
system of the television receiver by the 3D audio system, but other multi-channel audio
reproduction center speakers, for example, the 3-1 system 4-channel stereo of high vision
receiver Needless to say, it can also be used for center speakers.
[0018]
Since the present invention is configured as described above, the following effects can be
obtained.
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[0019]
According to the speaker system of the present invention, since the bass speaker is provided on
the bottom of the cabinet, a large diameter bass speaker can be provided without increasing the
size of the entire television receiver.
[0020]
Further, since the acoustic radiation means is provided inside the television receiver cabinet and
the sound conduction for guiding the radiation sound of the acoustic radiation means to the
bottom of the cabinet is provided, the radiation sound can be reflected in any direction. This
enables efficient sound emission.
[0021]
Further, by providing a partition plate on a part of the bottom of the cabinet, the sound of the
bass speaker is prevented from being radiated in the unnecessary direction, and a sufficient
sound pressure can be obtained at the listening position.
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