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US 2014/0153750 A1Published application
Directional loudspeaker
AssigneePanasonic Corporation
InventorsFumiyasu Konno, Katsu Takeda
Life of this patent
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Abstract
In a directional loudspeaker, an audible sound signal that is modulated with a carrier wave in the ultrasonic wave band is input to a piezoelectric element, and thereby a diaphragm having the piezoelectric element is vibrated and a sound wave is generated. In such a directional loudspeaker, the diaphragm is fixed to a fixed part via a plurality of beams disposed along the outer circumference of the diaphragm.
Claims7
A directional loudspeaker comprising a vibrator including:
- a diaphragm;
- a piezoelectric element disposed on at least one of a top face and a bottom face of the diaphragm;
- beams disposed in at least a part of an outer circumference of the diaphragm;
- and
- a fixed part disposed outside the beams.
2 more elements
Dependencies are inferred from the claim text.