JPS5349421

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DESCRIPTION JPS5349421
BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 and 2 are front and side sectional views
respectively illustrating a conventional speaker device, and FIGS. 3 and 4 show an embodiment of
the speaker device according to the present invention, respectively. A front view and a side
sectional view, FIGS. 5 and 6 show a front view and a side sectional view of another embodiment
of a speaker device according to the present invention, and FIGS. 7 and 8 show a third
embodiment according to the present invention respectively. It is a characteristic view which
shows the output sound pressure frequency characteristic of the Example of FIG. 4 and FIG. 5, 6,
compared with each of the example of FIG. In the drawings, the same reference numerals indicate
the corresponding parts, 1 is a frame of a saran net, 2 is an inner peripheral surface of the frame,
3 is a baffle, 4 is a cabinet, 5 is a high sound speaker, and 7 is a sound absorbing material. is
there. ′
DETAILED DESCRIPTION OF THE INVENTION A non-inventive embodiment relates to a speaker
apparatus having an improved salan net 7 frame mounted on a speaker cabinet. (1) Im-3 Zanico /
Be, generally speaking, in the conventional bookshelf type or floor type speaker device,
diffraction or reflection of the sound wave is caused because the cabinet is small or saran net is
scooped. There is a lot of C that causes disturbance in sound pressure custom-made. In
particular, if there is a salan net frame that protrudes from the baffle of the cabinet, the sound
pressure characteristics will be distorted by diffraction or reflection in the short high frequency
band of the wavelength. 1 and 2 are front views showing the conventional speaker apparatus of
this type, respectively. In the section 1: f, 1 is a frame of saran net, 2 is a 7 V-m. The circle 1jov3
of l is a baffle, 4 # -1 caine nets, 5 is a speaker for high-pitched sound, and 6 is a speaker for lowpitched sound. Same i1! As shown by JK, the frame 1 of the saran net in the conventional speaker
equipment rItIC is such that the inner circumferential direction 2 surrounding the high sound
speaker 5 is perpendicular to the surface of the baffle 3 of the cabinet 4 attached with the
speaker 5 attached. As a result, the sound pressure characteristics come to have a longing such
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as peaks and tips due to reflection and the like in the short sound wavelength range. (Gallen-book
'i # tea is made to overcome the above-mentioned drawbacks, and by providing a means for
preventing the disturbance of the sound pressure characteristic in the inner circumferential
direction of the saran net frame, It is an object of the present invention to provide an improved
speaker device. Hereinafter, non-inventive embodiments will be described in detail with reference
to the drawings. 3 and 4 show an embodiment of the speaker apparatus according to the present
invention. FIG. 3 is a front view of the speaker apparatus according to the present invention. [In
the figure, the same reference numerals as in FIG. It shall be. As shown in the figure, the inner
circumference IN [I2 surrounding the stuttering speaker 5 of the frame 1 of the saran net in the
speaker apparatus of the non-embodiment example is 45 "without the method of opening the
baffle 3 of the cabinet 4. Since the light is inclined outward by an angle less than ♂, the
occurrence of disturbances such as peaks and dips in the sound pressure t # note due to
reflection or the like in a short wavelength range is reduced. Islands 5 and 6 show another
embodiment of the speaker device according to the present invention-an orthographic view and a
portion (3) view, respectively, wherein the same reference numerals as in Figs. 7 # i is a sound
absorbing material. As shown in the figure, since the sound absorbing material 7 is attached to
the inner peripheral surface 2 surrounding the high-tone speaker 5 of the frame 1 of the saran
net in the speaker apparatus of this embodiment, the reflection is made in the high-pitch range of
short wavelength. As a result, the occurrence of disturbances such as peaks and dips in the island
sound pressure characteristics is reduced.
Note that only the frame 1 of the saran net is illustrated through the above-described drawings,
and the net is not illustrated. 7 and 148 respectively illustrate the output sound pressure
frequency characteristics of the speaker apparatus of FIGS. 3.4 and 5.6 according to the present
invention in comparison with that of the conventional speaker apparatus of FIG. 1.2. In the
characteristic diagram, the characteristic α in the figure is the conventional characteristic, and
the characteristic is 41 according to the present invention. 両 From both the figures according to
the prior art (D4I method a has many peaks and dips, It can be seen that the characteristics
according to are flat with less disturbance such as peaks and dips. In the above embodiment, the
sound pressure characteristic is disturbed on the inner peripheral surface of the high sound
speaker around the high sound speaker on the inner peripheral surface of the saran net frame in
the two-way speaker cage (4). However, the above-described means may be provided on the
entire inner peripheral surface of the saran net frame, and the present invention is not limited to
the two-way speaker device. Further, a sound absorbing material according to the embodiment of
FIG. 5.6 may be attached to the inclined inner peripheral surface of the saran net frame
according to the embodiment of FIG. 3.4. Furthermore, the cross-sectional shape of the sound
absorbing material is not limited to the rectangular shape shown in FIG. As described above, in
the speaker device according to the present invention, the inner peripheral surface of the saran
net frame, which was llIC vertical of the conventional baffle, is inclined to the outside, or the
sound absorbing material is attached to the circumferential surface of the saran net frame. The
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speaker vtxto output sound pressure frequency characteristic can be improved by providing a
means for preventing the disturbance of pressure characteristics, and in particular, as a means
for inclining the inner peripheral surface of the saran net frame outward, the normal of the
panfull surface The effect is remarkable when it is inclined by an angle of 4 to 90 ′ ′ (5) to the
outside.
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