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JPH0837693

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DESCRIPTION JPH0837693
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker device used for audio equipment such as a television receiver and other video equipment
and audio equipment, and a television receiver using the same.
[0002]
2. Description of the Related Art In recent years, with the progress of large screen, high sound
quality, and small space saving in television receivers, a horn and an acoustic tube are provided
on the front of the speaker to reproduce sound waves as a means to satisfy them. A system is
often used conventionally.
[0003]
Hereinafter, sound reproduction of a television receiver using such a conventional speaker device
will be described with reference to the drawings.
[0004]
FIG. 2 is a perspective view showing a schematic configuration of a television receiver
constructed by using the above-mentioned conventional speaker device. In FIG. 2, 1 is a speaker,
2 is an acoustic tube to which the speaker 1 is attached, 3 is an A cathode ray tube, 4 is an
opening of the acoustic tube 2, and 5 is a television cabinet.
03-05-2019
1
[0005]
As shown in FIG. 2, the television receiver incorporating the conventional speaker apparatus
constructed as described above has a speaker apparatus in which the acoustic tube 2 is disposed
on the front of the speaker 1, the television cabinet 5 and the television The television receiver
can be miniaturized and slimmed down by being built along the cathode ray tube 3 inside the
television receiver, and the opening 4 has a long and narrow rectangular shape. By arranging
them close to the front part of the cathode ray tube 3, it is possible to realize a high sound
quality and a high sound localization.
[0006]
However, in the above-described conventional configuration, as shown in FIG. 2, the backs of the
two speakers 1 disposed on the left and right sides of the L side and the R side are open. The
sound waves of antiphase components radiated to the back of the two speakers 1 interfere with
each other inside the television cabinet 5, and through many holes (not shown) for heat
dissipation usually provided in the television cabinet 5. The sound wave of the antiphase
component wraps around the front opening 4 of the television receiver and interferes with the
normal sound wave emitted from the opening 4, resulting in a decrease in bass characteristics.
[0007]
As a means for solving this problem, there is also a high-inch type television receiver
incorporating a closed box type speaker device in which a rear cabinet is disposed on the back of
the speaker device, but the cost increases. The low-inch television receiver has a problem that the
rear cabinet can not be disposed in the inner space.
[0008]
The present invention solves the above-mentioned problems of the prior art, and enables lowcost and sufficient reproduction of bass characteristics, and a speaker which can be practically
used even in a low-inch type television receiver. It is an object to provide an apparatus.
[0009]
SUMMARY OF THE INVENTION In order to solve this problem, the speaker device of the present
invention arranges two speaker devices on the left and right sides inside the cabinet of the
television receiver, As a means to prevent mutual interference of sound waves of antiphase
components radiated to the back of this speaker device, a rear cabinet is provided on the back of
the speaker device on either the L side or the R side to prevent sound waves from coming around
The configuration is as follows.
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2
[0010]
With this configuration, even in the case of a speaker device having an acoustic tube with a long
and narrow rectangular opening in consideration of incorporation into the device, it is possible to
use either the L side or the R side on the back of the speaker device. The provision of the rear
cabinet makes it possible to prevent the sound waves of antiphase components emitted from the
rear of the speaker device from interfering with each other inside the television cabinet, and
further to the front of the television receiver. It is possible to reproduce sufficient low-pitched
sound characteristics since an effect of substantially reducing the phenomenon in which the
sound wave of the antiphase component turns around and interferes with the normal sound wave
emitted from the opening of the acoustic tube is obtained. it can.
[0011]
Embodiments of the present invention will be described below with reference to the drawings.
The same reference numerals as those in FIG. 2 used in the above-mentioned conventional
example indicate the same parts.
[0012]
FIG. 1 is a plan sectional view of a television receiver showing the construction of a speaker
apparatus according to the embodiment. In FIG. 1, 1 is a speaker, 2 is an acoustic tube to which
the speaker 1 is attached, 3 is a cathode ray tube, 4 is an opening of the acoustic tube 2, 5 is a
television cabinet, and 6 is a rear cabinet provided on the back of the speaker 1.
[0013]
The operation of the speaker apparatus of the present invention configured as described above
will be described with reference to FIG.
Between the television cabinet 5 and the cathode ray tube 3, a speaker apparatus having an
acoustic tube 2 disposed on the front side of the speaker 1 is built in the left and right sides of
the speaker 1. Furthermore, on the back side of either the L side or the R side. The rear cabinet 6
is installed (in the embodiment of the present invention, installed in the L-side speaker device).
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3
[0014]
With this configuration, sound waves of antiphase components emitted from the back surface of
the speaker 1 of the L side speaker device are sealed by the rear cabinet 6 and the low frequency
characteristics are improved as the L side speaker device In addition, sound waves of antiphase
components emitted from the back surface of the speaker 1 of the R-side speaker device are
emitted to the inside of the television cabinet 5, but the rear surface provided to the L-side
speaker device The cabinet 6 does not interfere with the sound wave emitted from the rear
surface of the L-side speaker 1, and the reverse is made through the large number of heat
radiation holes (not shown) usually provided in the television cabinet 5. To significantly reduce
the phenomenon in which the sound wave of the phase component wraps in the vicinity of the
front opening 4 of the television receiver and interferes with the regular sound emitted from the
opening 4 And it serves as a possible.
[0015]
Therefore, reproduction of bass characteristics sufficient as the acoustic characteristics of a
television receiver can be made possible, and the rear cabinet 6 is installed only on the rear
surface of either the L-side or R-side speaker device. The above-described effect can be obtained
by doing this, and it is possible to realize a low-cost speaker device that can be put to practical
use also for a television receiver having a low-inch type internal space restriction. Become.
[0016]
Furthermore, the configuration of the embodiment of the present invention eliminates the
interference of sound waves inside the television cabinet 5, thereby providing the effect of newly
improving the sound clarity and simultaneously improving the sense of sound image localization.
It becomes possible.
[0017]
As described above, according to the present invention, two speaker devices are disposed on the
left and right sides of the L side and the R side, and sound waves of antiphase components
radiated to the back of the speaker device interfere with each other. As a means to prevent noise,
a low-cost reproduction of sufficient bass characteristics is possible by providing a rear cabinet
on the back of either the L-side or R-side speaker device to prevent sound wave wrap around It is
possible to improve the audio clarity and the sound localization, and further to install it on a lowinch type television receiver.
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[0018]
Brief description of the drawings
[0019]
1 is a cross-sectional plan view of a television receiver showing the configuration of a speaker
apparatus according to an embodiment of the present invention
[0020]
2 is a perspective view showing a schematic configuration of a television receiver configured
using the conventional speaker device
[0021]
Explanation of sign
[0022]
1 Speaker 2 Acoustic Tube 3 Cathode Ray Tube 4 Opening 5 Television Cabinet 6 Rear Cabinet
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