Intelligent light degradation sensing LED traffic signal

Details Intelligent light degradation sensing LED traffic signal Intelligent light degradation sensing LED traffic signal

2008-09-16

2008-09-16

Lee, Wilson (Department: 2163)

Electric lamp and discharge devices: systems

With signal, indicator, or alarm

C315S130000

Reexamination Certificate

active

11093391

ABSTRACT:
The inventive signal incorporates an intelligent diagnosis module inside a light emitting diode (LED) signal, such as an LED traffic signal. The inventive signal can self-extinguish or send a signal through its communication port at the end of its useful life when the LEDs are no longer providing the required light output. Additionally, the inventive signal sends a signal to increase the current as the LEDs degrade to ensure the light output is above a threshold minimum.

REFERENCES:
patent: 5019769 (1991-05-01), Levinson
patent: 5581173 (1996-12-01), Yalla et al.
patent: 6078148 (2000-06-01), Hochstein
patent: 6127784 (2000-10-01), Grossman
patent: 6153985 (2000-11-01), Grossman
patent: 6236331 (2001-05-01), Dussureault
patent: 6448716 (2002-09-01), Hutchison
patent: 6577080 (2003-06-01), Lys et al.
patent: 6667623 (2003-12-01), Bourgault
patent: 6963175 (2005-11-01), Archenhold et al.
patent: 2003/0015973 (2003-01-01), Ovens et al.
patent: 1 098 550 (2001-05-01), None

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