LED display
US6491412B1 · kind B1 · utility
73Cited by
8References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2000 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Jun 30, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/812
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An illuminated sign having an LED as a light source as claimed. A housing has a plurality of internal surfaces wherein at least one of the internal surfaces is a translucent surface. A reflective layer covers each of said internal surfaces except the translucent surface. At least one LED is positioned between the internal surfaces such that the illumination field of the LED is in a direction substantially opposite that of the translucent surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.