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JPH06165275

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DESCRIPTION JPH06165275
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker apparatus used for video equipment such as a television receiver and a television
receiver using the same.
[0002]
2. Description of the Related Art A method of providing a horn or an acoustic tube on the front of
a speaker and guiding a sound wave generated from the speaker to the opening provides a large
output sound pressure as compared to the case where the horn or the acoustic tube is not used.
There is an advantage that sound is transmitted in a specific direction, etc., and it has been
widely used conventionally.
[0003]
Hereinafter, a speaker device using a conventional acoustic tube will be described with reference
to the drawings.
FIG. 3 is a plan sectional view of a television receiver constructed by mounting the abovementioned conventional speaker apparatus using an acoustic tube. In FIG. 3, 1 is a speaker, 2 is
an acoustic tube to which the speaker 1 is attached, 3 is a television cabinet, 4 is a cathode ray
tube, 5 is an opening of the acoustic tube 2, 6 is a sound absorbing material, and 7 is a reflector.
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1
[0004]
The function of the television receiver constructed by incorporating the speaker device using the
conventional acoustic tube 2 configured as described above will be described below. As shown in
FIG. 3, the acoustic tube 2 to which the speaker 1 is attached is built in along the cathode ray
tube 4 inside the television receiver, and the television cabinet 3 is further placed along the
acoustic tube 2. It is possible to miniaturize a television receiver.
[0005]
Further, in the inside of the acoustic tube 2, sound absorption optimally installed in accordance
with the length and shape of the acoustic tube 2 in order to guide the sound wave emitted from
the speaker 1 more naturally to the opening 5 of the acoustic tube 2. The material 6 and the
reflection plate 7 are provided, whereby high sound quality of the television receiver can be
achieved.
[0006]
However, in the above-described conventional configuration, since the acoustic tube 2 is
disposed between the television cabinet 3 and the cathode ray tube 4, in order to further
miniaturize the television receiver, The cross-sectional area of the sound guiding portion for
guiding the sound wave inside the sound tube 2 and the cross-sectional area of the opening 5
become small, and it becomes impossible to perform more natural sound reproduction I had it.
[0007]
The present invention solves the above-mentioned conventional problems, and it is an object of
the present invention to provide a speaker device capable of achieving further downsizing and
higher sound quality of a television receiver and a television receiver using the same. It is
[0008]
SUMMARY OF THE INVENTION In order to solve this problem, the speaker device and the
television receiver using the same according to the present invention have an elongated opening
on the front surface of the speaker and are formed in a shape close to a substantially rectangular
shape. An acoustic tube for guiding the acoustic wave is disposed, and the tip opening of the
acoustic tube is joined to the outer wall side surface of the cathode ray tube and the inner wall
side surface of the television cabinet, and the outer wall side surface of the cathode ray tube from
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2
this junction to the opening of the television cabinet A sound guiding portion for guiding the
sound wave emitted from the sound tube to the front of the television receiver is formed by
utilizing the hollow portion between the and the inner wall side of the television cabinet.
[0009]
[Operation] With this configuration, the cathode ray tube and the television cabinet of the
television receiver can be formed in a speaker device in which the opening is made into an
elongated rectangular shape in consideration of incorporation into equipment and further
slimming the opening of the acoustic tube Since the cross-sectional area of the sound guiding
portion of the sound pipe can be enlarged by constructing the sound guiding portion of the
sound pipe by effectively utilizing the space of the above, the sound quality and television
receiver can be further enhanced. It is possible to further miniaturize the
[0010]
An embodiment of the present invention will be described below with reference to the drawings.
The same reference numerals as in FIG. 3 denote the same parts.
[0011]
FIG. 1 is a plan sectional view of a television receiver constructed by mounting a speaker device
according to an embodiment of the present invention.
In FIG. 1, 1 is a speaker, 8 is an acoustic tube to which the speaker 1 is attached, 9 is a television
cabinet, 4 is a cathode ray tube, 10 is an end opening of the acoustic tube, 11 is a space between
the cathode ray tube 4 and the television cabinet 9 12 is an opening of the television receiver
constituted by the sound guiding unit 11, and 13 is a tip of the sound tube 8 constituting the tip
opening 10 of the sound tube and the television cabinet A fitting rib for joining 9 and a
cushioning member 14 provided at the joining portion between the tip of the acoustic tube 8
constituting the tip opening 10 of the acoustic tube and the cathode ray tube 4 are provided.
[0012]
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FIG. 2 is a perspective view showing the structure of the speaker device according to the
embodiment of the present invention shown in FIG.
In FIG. 2, 15 is a sound absorbing material, and 16 is a reflector.
[0013]
In the case of the speaker apparatus using the acoustic tube 8 of the present invention
configured as described above, the cathode ray tube 4 and the television of the television
receiver can be used even in the speaker apparatus in which the opening 12 of the television
receiver is slimmed. By forming the sound guiding portion 11 for guiding the sound wave
radiated from the tip opening 10 of the sound tube 8 by effectively utilizing the space with the
cabinet 9, the opening 12 of the television receiver is Since it is possible to set a large crosssectional area that affects the ease of passage of the sound wave of the part 11, it is possible to
improve the sound quality of the speaker device and further miniaturize the television receiver.
[0014]
Furthermore, in the embodiment of the present invention, the sound-absorbing member 15 and
the reflecting plate 16 provided inside the acoustic tube 8 are the length of the acoustic
conducting portion 11 composed of the television cabinet 9 and the cathode ray tube 4 and the
acoustic tube 8 The cushioning material 14 is provided at the joint between the tip opening 10 of
the acoustic tube and the outer wall side surface of the cathode ray tube 4 to prevent acoustic
waves from entering the acoustic tube, and High sound quality can be achieved by joining the tip
opening 10 and the inner wall side surface of the television cabinet 9 via the fitting rib 13 so as
to prevent sound wave penetration and simultaneously increase the rigidity of the television
cabinet 9. It can be possible.
[0015]
Further, in the case of the embodiment of the present invention, the cross-sectional area of the
sound conducting portion 11 constituted by the cathode ray tube 4 and the television cabinet 9
is configured to be larger than the cross-sectional area of the tip opening 10 of the acoustic tube
The attenuation of the acoustic signal radiated from the speaker 1 through the acoustic tube 8 is
suppressed to realize high sound quality.
[0016]
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When the speaker device according to the present invention and the television receiver using the
same are configured, the further downsizing and higher sound quality of the television receiver
which can not be realized conventionally can be achieved by the cross-sectional area of the
sound conductor 11 It became possible because it became the composition which can be taken
larger effectively.
[0017]
As described above, according to the present invention, an acoustic tube for guiding a sound
wave having an elongated opening and having a substantially rectangular shape is disposed on
the front of the speaker, and the tip opening of the acoustic tube is a cathode ray. The acoustics
are joined to the outer wall side of the tube and to the inner wall side of the television cabinet,
utilizing the cavity between the outer wall side of the cathode ray tube and the inner wall side of
the television cabinet from the joint to the opening of the television cabinet. By forming the
sound waves emitted from the tube as the sound guiding portion leading to the front of the
television receiver, it is possible to realize further downsizing of the television receiver, high
sound quality, and high sound pressure sound reproduction.
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