LED elevated light fixture and method
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United States of America Patent
Stats
-
Dec 8, 2015
Issued Date -
N/A
app pub date -
Dec 3, 2014
filing date -
Dec 3, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Disclosed are elevated lights and methods of maintaining illumination in elevated lights for an airfield. The elevated lights have a substrate having a mounting surface, LEDs, a reflector, and an LED driver circuit. The LEDs are disposed on the mounting surface of the substrate and configured such that a primary illumination axis of each LED is oriented along a longitudinal axis of the elevated light. The reflector is configured such that the light emitted from the LEDs is reflected radially with respect to the longitudinal axis of the elevated light. The driver circuit is configured to provide a current to the LEDs and detect failure of one or more of the LEDs. Illumination is maintained by providing a current to the LEDs, detecting a voltage change across the LEDs, determining, based on the voltage change, LED failure, and altering the provided electrical current in order to maintain illumination.
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Cited Art Landscape
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