| 摘要 |
PROBLEM TO BE SOLVED: To provide a piezoelectric speaker that makes the best use of a motion of a piezoelectric element. SOLUTION: In the piezoelectric speaker where the piezoelectric element 1 is stuck to a panel 2, the piezoelectric element 1 and the panel 2 are formed in a rectangular shape, the piezoelectric element 1 is stuck to an end of the panel 2 in its length direction and the length direction of the piezoelectric element 1 is aligned with the short side of the panel 2, and the length directional size of the panel 2 is selected to be an odd number of multiple of the width of the short side of the piezoelectric element 1. Or the piezoelectric element 1 is stuck to a corner or in the middle of the panel 2 so that the length direction of the piezoelectric element 1 is coincident with the length direction of the panel 2, and the length of the panel in the long side and the short side is selected to be an odd number multiple of the length of the long side and the short side of the piezoelectric element.
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