Patent ID: 6268801
Filing Date: 2001-07-31
Classification: F21V,F21W,F21Y,G08G

Abstract:
The method of retro-fitting a traffic signal lamp with an LED lamp, where the traffic signal lamp has a housing, a front door plate attached to the housing, a lens attached to the front door plate, a reflector in the housing, a threaded electrical socket connector in the housing, and a threaded light bulb connected into the socket connector, the method comprising the steps of:removing the lens from the front door plate;removing the threaded light bulb from the threaded socket connector;affixing an LED lamp module to the front door plate, wherein the LED lamp module includes:a plurality of light emitting diodes,a power supply electrically connected to the plurality of light emitting diodes,wires extending from the power supply that terminate in a threaded electrical connector compatible with the socket connector; andconnecting the threaded electrical connector of the LED lamp module to the threaded socket connector.