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JPH0578098

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DESCRIPTION JPH0578098
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
grille structure of an omnidirectional speaker system, and more particularly to a grille structure
of an omnidirectional speaker system constructed by arranging a diffuser in front of the
loudspeakers.
[0002]
2. Description of the Related Art Among omnidirectional speaker systems in which a diffuser is
disposed in front of a speaker, the one proposed last time is shown in FIG. In the figure, S is a
nondirectional speaker system, and includes a cabinet 2 having an opening 21 at the top, a
speaker unit 3 attached to the opening 21 with the diaphragm 31 facing upward, and a bridge
member 4 It is comprised by the diffuser D arrange | positioned ahead of the speaker diaphragm
31 by the bridge | crosslinking structure, and the grille 1 for speaker unit protection. The grill 1
is composed of a tension frame portion 11 made of resin and a grill net 12 attached to the
tension frame portion 11. According to the above configuration, the sound wave emitted from
the speaker diaphragm 31 is reflected and diffused by the diffuser D so as to exhibit
nondirectionality.
[0003]
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1
However, in the above conventional omnidirectional speaker system S, since it is necessary to
provide the bridge leg member 4 for supporting the diffuser D, the number of assembling steps
increases, and The cost of materials, etc. was incurred, and the cost increased. Furthermore, since
the bridge leg member 4 is disposed in the vicinity of the speaker diaphragm 31 and the diffuser
D, it also affects the reflection and diffusion of the sound wave, which causes non-directional
interference.
[0004]
An object of the present invention is to provide a grille structure of an omnidirectional speaker
system which can be manufactured at low cost and can be manufactured at low cost and is
excellent in the effect of radiation and diffusion of sound waves.
[0005]
SUMMARY OF THE INVENTION The grill structure of a nondirectional speaker system according
to the present invention is for protecting a speaker unit in a nondirectional speaker system
configured by arranging a diffuser in front of the speaker unit. And the diffuser are integrally
formed.
Further, the diffuser may be attached to a position corresponding to the front of the speaker unit
of the metal punching grill.
[0006]
A diffuser integrally formed with the grille for protecting the speaker unit reflects and diffuses
the sound wave from the speaker diaphragm. Further, in the case where the grill is a metal
punching grill, a diffuser attached at a corresponding position in front of the speaker reflects and
diffuses the sound wave from the speaker diaphragm.
[0007]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The grille structure of a
nondirectional speaker system according to the present invention will be described with
03-05-2019
2
reference to FIGS. 1 and 2. FIG. FIG. 1 is a sectional view showing an embodiment according to
the present invention, and FIG. 2 is a sectional view showing another embodiment according to
the present invention. In FIG. 1, S is a nondirectional speaker system, and is constructed by
integrally forming the diffuser D and the tension frame portion 11 of the grille net 12 of the
grille 1 for protecting the speaker 3 with a resin molded product. There is. According to the
above-described configuration, the diffuser D is disposed in front of the speaker 3, and the sound
wave from the speaker diaphragm 31 can be reflected and diffused to be nondirectional. In
addition, at this time, in the vicinity of the speaker diaphragm 31 and the diffuser D, there is not
formed a thing that inhibits the reflection and diffusion of the sound wave, so that good
directivity characteristics can be obtained. Since it is integrally formed with the tension frame
portion 11 of the net 12, it can be manufactured at low cost, and if the grille net 11 is attached to
the cabinet 2 also at the time of assembly, the diffuser D is in front of the speaker 3 It is possible
to greatly reduce the number of man-
[0008]
In FIG. 2, the grille 1 is a metal punching grille 13 and a diffuser D is mounted at a position
corresponding to the front of the speaker 3 of the punching grille 13. In the figure, reference
numeral 14 denotes an attaching portion of the punching grill 13 to the cabinet 2. Also in this
case, the same effect as the nondirectional speaker S of FIG. 1 can be obtained.
[0009]
According to the grille structure of the omnidirectional speaker system of the present invention,
since the grille for protecting the speaker and the diffuser are integrally formed or attached, the
number of assembling steps is reduced. In addition, it is possible to reduce the manufacturing
cost, and to obtain good directivity characteristics, since there is not formed in the vicinity of the
speaker diaphragm and the diffuser the one that inhibits the reflection and diffusion of the sound
wave. it can.
03-05-2019
3
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