JPS58109397

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DESCRIPTION JPS58109397
[0001]
Brief description of the drawings
[0002]
1 is a top view of a conventional piezoelectric speaker, FIG. 2 is a cross-sectional view of the
same, FIG. 3 is a frequency characteristic diagram of the same speaker, and-FIG. 5 and 6 are the
same cross-sectional view, and FIGS. 6 and 7 are cross-sectional views showing another
embodiment of the loudspeaker according to the present invention, and FIG. 8 is a frequency
characteristic of the loudspeaker in the embodiment of FIG. FIG. 7 · · · · · · Piezoelectric elements, ·
· · · · · · · · · · · · · · · · · · · · · · 1st diaphragm, 10. 13. 14 ...... second diaphragm, lea ...... hole, 11 ......
metal frame.
11-05-2019
1