Compact light emitting diode retrofit lamp and method for traffic signal lights
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United States of America Patent
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Jun 28, 2005
Grant Date -
Apr 15, 2004
app pub date -
May 30, 2003
filing date -
Sep 4, 2002
priority date (Note) -
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Abstract
A high power LED lamp and method for retrofitting conventional traffic signal lamps. The LED lamp includes a housing, a power supply disposed in the housing, a plurality of LEDs mounted to a substantially planar mounting surface in the housing and electrically connected to the power supply for producing diverging light, and a threaded electrical connector extending from the housing. The method includes replacing a conventional incandescent light bulb with the LED lamp, and installing a Fresnel lens inside the traffic signal lamp that collimates and just fills and illuminates the outer lens of the traffic signal lamp.
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