Industry Patents

An improved LED light source assembly is described, suitable for use as a retrofit for prior lighting fixtures of a kind including a concave reflector, an incandescent lamp positioned with its filament(s) at or near a focal region of the reflector, and a lens assembly for projecting light reflected by the reflector to a distant location, e.g., a theater stage. The improved LED light source assembly includes a compact arrangement of three or more LED assemblies, which are mounted at the forward end of an elongated heat pipe. The heat pipe's rearward end attaches to a heat sink mountable on the back side of the lighting fixture's concave reflector, and the heat pipe extends through a central hole in the reflector to position the LED assemblies at or near the concave reflector's focal region. The concave reflector reflects light emitted by the LED assemblies forward to the lighting fixture's lens assembly, which in turn projects a beam of light to a distant location. The LED light engine's configuration allows a significant proportion of the prior lighting fixture to continue to be utilized, leading to substantial cost saving and simplified installation.