Light emitting diode traffic control device
US7274302B2 · kind B2 · utility
17Cited by
5References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 2004 |
| Grant date | Sep 25, 2007 |
| Priority date | — |
| Expiry date | Jul 8, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/095
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A convection cooled traffic control device for selectively indicating traffic control guidance to vehicles. An enhanced brightness traffic control device for selectively displaying patterns of light emitting diodes (LEDs). A convection cooled traffic control device for selectively directing traffic by selectively actuating patterns of LEDs. A tapering system of a LED traffic control device. A brightness regulated LED traffic signal lamp. A conflict monitor interface system for a LED signal lamp. A failure logging method for compiling LED failures within an LED traffic signal light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.