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US 8,477,968 B2Granted
Thermal acoustic speaker
AssigneeHon Hai Precision Industry Co., Ltd.
InventorJen-Tsorng Chang
Life of this patent
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Abstract
A thermal acoustic speaker comprises a body and a thermoelectric converter. The body comprises a shell with at least one hole and a side with a sound hole. The shell defines a sound cavity in the body. The thermoelectric converter, disposed around at least a part of the shell, comprises a circuit and a conductive membrane and covers at least a part of the at least one hole. The circuit receives at least one electrical audio signal. The conductive membrane contacts a part of the circuit so that the thermoelectric converter heats air in the sound cavity to emit sound.
Claims11
A thermal acoustic speaker, comprising:
- a shell having a sound cavity formed therein, and comprising a top wall having a first sound hole exposed to an outside of shell and in communication with the sound cavity, and a peripheral wall extending down from the top wall and comprising at least one through hole in communication with the sound cavity;
- and
- a thermoelectric converter disposed around at least a part of the shell, comprising:
- a circuit for receiving at least one electrical audio signal;
- and
- a conductive membrane contacting a part of the circuit,
- wherein the thermoelectric converter covers at least a part of the at least one through hole of the shell and heats air in the sound cavity to emit sound according to the at least one electrical audio signal.
4 more elements
Dependencies are inferred from the claim text.