LED retrofit module for roadway fixture

A solid state replacement light module for a high intensity discharge light fixture comprised of a housing, said module comprised of a cast elongated generally planar metal body, said body having a first side including a plurality of light emitting diodes and a second side including a plurality of heat dissipation fins integrally cast with the planar metal body, an electronics module, said body further including a means for rotatable attachment to said housing which is integrally cast with the planar metal body, said means for rotatable attachment comprising a pair of tabs including passages adapted to receive a post disposed at a first end of said body and a retaining clasp for attachment to said housing disposed at an opposed end of the body.

A method of retrofitting a high intensity discharge roadway lamp fixture, said method comprising providing an LED inclusive metal door which is cooperatively shaped and sized relative to an opening in said lamp fixture, said LED inclusive door comprising a first side through which a plurality of light emitting diodes emit light and a second side including an electronics module, said light emitting diodes and said electronics module being in thermal communication with said LED inclusive door, removing an existing electronics door and an existing optical door from said fixture, the electronics door being removed at its hinged connection with said fixture, attaching said LED inclusive door to said fixture at said hinged connection, and connecting said electronics module to fixture power lines.