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JPS5866791

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DESCRIPTION JPS5866791
[0001]
Brief description of the drawings
[0002]
FIG. 1 is a sectional view showing a conventional cone-shaped speaker, FIG. 2 is a sectional view
of a cone-shaped diaphragm, and FIGS. 3a and 3b. FIG. 4C is a cross-sectional view showing a
conventional flat panel speaker, FIG. 4 is a cross-sectional view showing a flat panel speaker
according to an embodiment of the present invention, and FIG. 5 is an embodiment of the present
invention shown in FIG. FIG. 3 is a graph showing sound pressure-frequency characteristics of
each of the flat loudspeaker according to the present invention, the conventional cone
loudspeaker using a paper cone, and the conventional flat loudspeaker shown in FIG. 3C.
DESCRIPTION OF SYMBOLS 10 ... Flat speaker, 11 ... Ring-shaped flat plate 12 ... Voice coil, 13 ...
Edge, 14 ... Spider, 15 ... Magnetic circuit part, 16 ... Cone diaphragm , 18 ... circular plate, 19 ...
plate diaphragm. なお。 The same reference numerals in the drawings denote the same or
corresponding parts. Figure 3 Figure 4
11-05-2019
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