In-car audio system
US9591388B2 · kind B2 · utility
5Cited by
0References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 12, 2014 |
| Grant date | Mar 7, 2017 |
| Priority date | — |
| Expiry date | Apr 7, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An in-car audio system includes a speaker unit. A frame of the speaker unit is fixed to a support plate serving as part of the structural member of a vehicle via a partition wall member. The support plate has an opening formed therein. A duct is connected to the opening, and the opening communicates with the outside of the vehicle. A space surrounded by the speaker unit, the support plate, and a partition wall member serves as a first acoustic resonance space, and a communication channel located inside the duct serves as a second acoustic resonance space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.