Self-lighting type push button input device
US7266194B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2004 |
| Grant date | Sep 4, 2007 |
| Priority date | — |
| Expiry date | Apr 30, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2231/022
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A self-lighting type push-button input device according to the presently disclosed subject matter can include a button base portion formed of a transparent material. Holes can be formed in predetermined positions of the button base portion, and spring portions can be formed integrally with the holes by molding transparent silicone rubber with a light diffusing agent incorporated therein. The button base portion serves as a light conducting portion, and the spring portions can uniformly diffuse the light distributed thereto by the light conducting portion, whereby lighting can be effected by a reduced number of light sources, effecting a reduction of size and cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.