Illuminated button switch
US6670565B2 · kind B2 · utility
9Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 2003 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | May 15, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2221/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illumination type push button switch includes EL element 20 mounted to a bottom surface of board 17 below switch contact 2. Board 17 has through-holes 17A and 17B near the contact. EL element 20, which is capable of lighting plural push buttons simultaneously by surface-light emission, emits light via through-holes 17A and 17B of board 17 to light push buttons 11 and 12. The illumination type push button switch thus lighting the push buttons clearly includes a small number of components and is inexpensive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.