LED traffic light with individual LED reflectors
US6283613A · kind A · utility
76Cited by
30References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 29, 1999 |
| Grant date | Sep 4, 2001 |
| Priority date | — |
| Expiry date | Jul 29, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/80
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An LED signal module includes a casing defining a cavity. Within the cavity is an array of LEDs. Individual reflectors are placed around individual LEDs of the array. The individual reflectors are structured to receive direct light from their associated individual LEDs and substantially to prevent direct light from their associated individual LEDs from impinging upon the individual reflectors of other LEDs of the array of LEDs. Also included, and covering the cavity, is a lens shaped to direct the output luminance of the LEDs below a horizontal axis of the module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.