Lighted switch device
US7230196B2 · kind B2 · utility
79Cited by
5References
15Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Sep 27, 2005 |
| Grant date | Jun 12, 2007 |
| Priority date | — |
| Expiry date | Sep 27, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2231/012
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighted switch device, comprising a substrate, a switch provided on a first surface of the substrate, a light source provided on a second surface of the substrate, a key top to press the switch, and a light guide mechanism to guide light emitted from the light source to the key top or a periphery of the key top, the light guide mechanism including a first light guiding member to hold the key top and a second light guiding member disposed to surround the light source, the light emitted from the light source being guided through the second light guiding member to the first light guiding member holding the key top.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.