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DESCRIPTION JPS6140099
[0001]
Brief description of the drawings
[0002]
1 to 3 show an embodiment of the present invention. FIG. 1 is an exploded perspective view, FIG.
2 is a longitudinal sectional view, FIG. 3 is an enlarged longitudinal sectional view of the main
parts, FIG. Fig. 5 is a sound pressure-frequency characteristic diagram of the piezoelectric
speaker according to the present invention, Fig. 5 is an enlarged longitudinal sectional view of
the main part showing another embodiment, and Fig. 6 is an enlarged longitudinal sectional view
of the main part showing an intermediate plan of the present invention; Figs. 7A, 7B and 8C are
longitudinal sectional views showing the prior art respectively, Fig. 8A port is a plan view of Fig.
8A, and Fig. 9 is a sound pressure-frequency characteristic diagram of Fig. 8A. is there. 1 is a
piezoelectric vibrator, '2 is a support rod, 3 is a frame, 4 is a ring-like member, and 5 is a flat
diaphragm.
11-05-2019
1