| 摘要 |
PROBLEM TO BE SOLVED: To provide a spherical piezoelectric speaker with ease of manufacturing process and less manufacturing cost. SOLUTION: The piezoelectric speaker comprising a vibrator, a piezoelectric vibrator, and a pressure imparting tool 2, is characterized by having a structure such that the vibrator is a nearly spherical package 1 wherein fluid of gas or liquid is filled, and the piezoelectric bimorph being the piezoelectric vibrator which is pressurized in a direction of the package 1 by the pressure imparting tool 2 is fixed to the surface of the package 1. COPYRIGHT: (C)2006,JPO&NCIPI
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