Light emitting diode traffic control device

Details Light emitting diode traffic control device Light emitting diode traffic control device

2007-09-25

2007-09-25

Wu, Daniel (Department: 2612)

Communications: electrical

Visual indication

Using light emitting diodes

C362S294000, C362S373000, C361S688000, C361S690000

Reexamination Certificate

active

10843876

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.

REFERENCES:
patent: 5898381 (1999-04-01), Gartner et al.
patent: 6054932 (2000-04-01), Gartner et al.
patent: 6236331 (2001-05-01), Dussureault
patent: 6244727 (2001-06-01), Ryan et al.
patent: 6803732 (2004-10-01), Kraus et al.
patent: 2002/0175826 (2002-11-01), Hutchison et al.

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