Light emitting diode-based signal light
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United States of America Patent
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Sep 28, 2004
Grant Date -
Oct 2, 2003
app pub date -
Apr 1, 2002
filing date -
Apr 1, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A light-emitting diode-based light source (40) for retro-fitting into a traffic signal lamp (10) employing an incandescent light bulb (12) includes at least one light emitting diode (LED) (46), a dispersing reflector (62) cooperating with the at least one LED (46) to adapt light (60) produced by the at least one LED (46) for receipt by optics of the traffic signal lamp (10), and a screw-type electrical connector (42) adapted to mate with a threaded socket connector (18) of the traffic signal lamp (10). The screw-type electrical connector (42) is adapted to transmit electrical power to the at least one LED (46). A method (100) is provided for the retro-fitting, including the step (104) of removing the threaded light bulb (12) from the threaded socket (18), and the step (106) of connecting the threaded LED light source (40) into the threaded socket (18).
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