Electronic device with speaker cavity cooling
US9860660B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2015 |
| Grant date | Jan 2, 2018 |
| Priority date | — |
| Expiry date | May 22, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/022
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronic device may have a housing. The housing may enclose an interior cavity. A speaker may be mounted in an opening in the housing. The interior cavity may serve as a sealed back volume for the speaker during normal operation of the speaker. During normal operation, control circuitry in the interior cavity plays audio content through the speaker. When it is desired to cool the control circuitry and the speaker, the control circuitry supplies a subaudible signal to the speaker. Airflow regulators having one-way valves and valves that are controlled by the control circuitry are mounted in the housing. Movement of a diaphragm in the speaker when the subaudible speaker is applied causes the diaphragm to pump air through the airflow regulators, creating a cooling airflow through the interior cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.