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JPH06205485

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DESCRIPTION JPH06205485
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker apparatus in which a speaker is mounted inside a cabinet body.
[0002]
2. Description of the Related Art In recent years, television receivers have been increased in size
(wide vision), and on the other hand, there has been a demand for increasing the directivity of
speaker devices.
[0003]
A conventional speaker device will be described below with reference to the drawings.
FIG. 3 is a perspective view showing the configuration of a conventional speaker device. In FIG. 3,
31 is a front portion of a cabinet, 32 is a high-sound speaker attached to the front portion 31 of
the cabinet, and 33 is a front portion 31 of the cabinet. The attached mid-low range speaker 34
is a side of the cabinet.
[0004]
However, in the above-described conventional configuration, the directivity of the sound wave
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radiated from the speaker is poor because the width dimension b of the cabinet is large relative
to the sound wave emitting surface size of each speaker. While R processing was applied to both
ends of the front portion 31 to improve the sound diffraction effect and improve the directivity in
the lateral direction, the above contents are insufficient for a wide vision type television receiver.
There is a problem that the directivity in the lateral direction is bad, and the directivity
characteristic of such a conventional speaker device is shown by a broken line in FIG.
[0005]
The present invention solves the above-mentioned conventional problems, and improves the
directivity of the lateral direction by improving the sound diffraction effect which is the problem
of the conventional speaker device, and a speaker for a wide vision type television receiver. It is
an object of the present invention to provide a speaker device with excellent directivity
characteristics that can be sufficiently coped with as a device.
[0006]
SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the speaker
device of the present invention has a speaker provided from the inside to an opening provided on
the front of a cabinet, and the width of the opening corresponds to the sound wave emitting
surface of the speaker. It is set as the composition narrowed rather than the width dimension of.
[0007]
[Operation] With this configuration, when the speaker device is operated, the total sound wave
emitted from the high directivity speaker and the mid-low frequency speaker is narrowed by the
width of the opening in the front part of the cabinet. And, as a result, there is an improvement in
the lateral directivity of the sound diffraction effect compared to conventional loudspeaker
devices.
[0008]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A loudspeaker apparatus according
to an embodiment of the present invention will be described below with reference to the
drawings.
FIG. 1 is a perspective view showing the configuration of the speaker device according to the
same embodiment. In FIG. 1, 11 is a front portion of a cabinet, 12 is a high sound speaker
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mounted inside a cabinet, and 13 is mounted inside a cabinet as well. A mid-low range speaker
14 is a side portion of the cabinet, and a is a width dimension of an opening provided in the front
portion 11 of the cabinet.
[0009]
The operation of the loudspeaker apparatus of the present invention configured as described
above will be described below.
When operated as a speaker device, all sound waves radiated from the high directivity speaker
12 and the mid-bass speaker 13 are narrowed in the sound wave in the lateral direction by the
width a of the opening provided in the front part 11 of the cabinet The crossover frequency
bandwidth which is radiated and determined by fc = 340 / a (a = a lateral width dimension of the
opening) is broadened, resulting in the crossover of the conventional speaker apparatus as
shown by the crossover frequency fca in the characteristic diagram of FIG. Compared to the
frequency fcb, the sound diffraction effect is improved, and the directivity in the lateral direction
can be improved.
[0010]
As described above, according to the present embodiment, all the sound waves emitted from the
high directivity speaker 12 and the mid-bass speaker 13 are narrowed by the width a of the
opening of the front portion 11 of the cabinet. As a result, the sound diffraction effect is
improved as compared with the conventional speaker device, and the lateral directivity can be
improved.
[0011]
As described above, in the speaker device according to the present invention, the width of the
opening provided in the front of the cabinet is made narrower than the width dimension of the
sound wave emitting surface of the speaker mounted inside the cabinet body. As a result, it is
possible to realize a speaker device in which the sound diffraction effect is improved and the
directivity in the lateral direction is improved as compared with the conventional speaker device.
[0012]
Brief description of the drawings
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[0013]
1 is a perspective view showing the configuration of a speaker apparatus according to an
embodiment of the present invention
[0014]
Fig. 2 Characteristic diagram comparing the directivity characteristics of the speaker device of
the embodiment and the prior art
[0015]
3 is a perspective view showing the configuration of the conventional speaker device
[0016]
Explanation of sign
[0017]
11 cabinet front portion 12 treble speaker 13 mid-bass speaker 14 cabinet side portion
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