Retro-fit illuminated sign module and method
US5469347A · kind A · utility
18Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1994 |
| Grant date | Nov 21, 1995 |
| Priority date | — |
| Expiry date | Feb 7, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/80
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A module for retro-fitting an illuminated Exit sign, includes a plurality of light emitting diodes mounted in the module. Light emitted by the diodes is reflected and scattered by a reflector panel in a generally uniform distribution pattern to illuminate the sign.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.