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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view showing an
embodiment of the present invention. A5・・・・・・ボイスコイル。 −57 1
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flat-plate type
"speaker device" in which a voice coil vibrates a diaphragm of a human face provided with a
drawing portion on the surface. The speaker device as described above usually attaches paper
printed with pictures, patterns, photographs, etc. on plywood to form an image area on the
surface, and with the image area exposed, it is hung on the i wall surface Use, such as, decorative
advantages, thickness' wn, ov-cyr ', = 6 hv 14 ~ "" E' $ 7 "&. Since they are integrated, they have
an advantage that the configuration is simple (148-105524-02). However, in the conventional
one, the diaphragm is made of plywood with a large area, and this is directly connected to the
voice coil, so that the sound with high fidelity is reproduced as compared with the one provided
with the speaker cone. In particular, the reproduction of the high-pitched sound region was poor.
It is an object of the present invention to provide a relatively simple arrangement which allows
good reproduction of sounds in the high-pitched range without impairing the above-mentioned
advantages of the loudspeaker system. Hereinafter, embodiments of the present invention will be
described with reference to the drawings. Reference numeral 1 denotes a vibrating plate made of
wooden plywood. A picture, a pattern, a photograph and the like are printed to cover the surface
and the peripheral surface, and a paper 2 is pasted to form a drawing portion. A round hole 3 is
formed in the central portion of the diaphragm 1, and the hole 5 is covered with a thin metal
plate 4 (including a foil) such as aluminum, and the outer peripheral portion of the thin plate 4 is
fixed to the peripheral portion of the hole 3 from the back side. ing. A voice coil 5 is provided
with a plug 7 at the tip of a connection vibro wound with the voice coil, and the central portion of
the metal sheet 4 is fixed to the plug 7. (2) 1'-Round 4B-105524-038 is a permanent magnet, the
yokes 9 and 10 are respectively provided on the surface side and the back side, and the
connection vibro is supported by the yoke 9 on the front side, The yoke 10 is fixed to the back
plate 11. 12 is a nail rim-like frame, the outer part of the back plate +1 is fixed to the back
surface side, and a slight gap 13 is formed between the inner periphery of the frame 12 and the
outer periphery of the diaphragm 1 I'm lying. The support pieces 14 are fixed to the front plate
11, and the back surface of the diaphragm 1 is fixed at a plurality of places by these. Therefore,
when using this speaker device, the voice current is flowed to the voice coil 5 to vibrate the
diaphragm 1 through the gold ll4 y II plate 4 and this, thereby reproducing sound. In this book,
the gold rRm plate 4 vibrates as in Qll, so the high frequency characteristics are improved
compared to a diaphragm made of only conventional plywood, and high sound, 261, □□□, □ 1:
color, 6 よ う 1 o Oh, □ 7, Ah.
In addition, since it is possible to easily form an image portion so that the metal thin plate 4 can
not be seen from the outside, the decorative outside “48-105524-04-3 ′ ′ ′ ′ which is one
of the features of this elliptical speaker device There is also the effect that the configuration is
simple because the attachment of a gold @ thin plate can be made relatively relatively without
losing the appearance.
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