发明名称 |
Spherical piezoelectric speaker |
摘要 |
A spherical piezoelectric speaker having a small and simple structure, a wide sound frequency range and a high sound pressure includes a spherical shell piezoelectric ceramic body which is hollow inside and an external electrode and an internal electrode defining a driving device for oscillating the spherical shell piezoelectric ceramic body. A sound absorber is provided in a hollow section of the piezoelectric ceramic body and a frame for holding the piezoelectric ceramic body is disposed on the outer surface of the piezoelectric ceramic body via dampers for reducing an influence of external oscillation.
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申请公布号 |
US5825902(A) |
申请公布日期 |
1998.10.20 |
申请号 |
US19960725000 |
申请日期 |
1996.10.01 |
申请人 |
MURATA MANUFACTURING CO., LTD. |
发明人 |
FUJISHIMA, SATORU |
分类号 |
H04R17/00;H04R17/10;(IPC1-7):H04R25/00 |
主分类号 |
H04R17/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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