Light emitting diode-based signal light
US6796698B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2002 |
| Grant date | Sep 28, 2004 |
| Priority date | — |
| Expiry date | Apr 1, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/80
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light-emitting diode-based light source (40) for retro-fitting into a traffic signal lamp (10) employing an incandescent light bulb (12) includes at least one light emitting diode (LED) (46), a dispersing reflector (62) cooperating with the at least one LED (46) to adapt light (60) produced by the at least one LED (46) for receipt by optics of the traffic signal lamp (10), and a screw-type electrical connector (42) adapted to mate with a threaded socket connector (18) of the traffic signal lamp (10). The screw-type electrical connector (42) is adapted to transmit electrical power to the at least one LED (46). A method (100) is provided for the retro-fitting, including the step (104) of removing the threaded light bulb (12) from the threaded socket (18), and the step (106) of connecting the threaded LED light source (40) into the threaded socket (18).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.