发明名称 |
ULTRASONIC SOUNDER, ULTRASONIC DEVICE, AND PARAMETRIC SPEAKER USING THE SAME |
摘要 |
<p>PROBLEM TO BE SOLVED: To provide: an ultrasonic sounder by which a high sound pressure can be obtained efficiently; and a parametric speaker using such an ultrasonic sounder.SOLUTION: An ultrasonic sounder 110 is utilized as an oscillation source of a parametric speaker 100. The ultrasonic sounder 110 comprises: a piezoelectric vibrator formed by a plate-like piezoelectric device and a vibration plate with the piezoelectric device glued to one principal surface thereof; and a resonator which is provided on the other principal surface of the vibration plate and resonates with vibration of the vibration plate to generate ultrasonic waves. The characteristic vibration caused by only the resonator is coincident with a primary resonance of itself in frequency. Therefore, not only the whole ultrasonic wave vibrator 110, but also the resonator resonates and thus, a high sound pressure can be obtained.</p> |
申请公布号 |
JP2015012384(A) |
申请公布日期 |
2015.01.19 |
申请号 |
JP20130135328 |
申请日期 |
2013.06.27 |
申请人 |
TAIHEIYO CEMENT CORP;NIHON CERATEC CO LTD |
发明人 |
ASAKURA RYOTA;KUROSAKI NOBUYUKI |
分类号 |
H04R3/00;H04R17/00 |
主分类号 |
H04R3/00 |
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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