LED LAMPS FOR RETROFIT ON HIGH WATTAGE METAL HALIDE BALLASTS.

摘要

Lamp (200) for retrofit in existing HID fixtures, including a heat sink (202) including: an annular tube (212) including a first end (214) and a second end (216), a plurality of fins (218) extending radially from an exterior surface of the annular tube (212), wherein a length of each fin (218) extends from the first end (214) of the annular tube to the second end (216) of the annular tube; a plurality of light sources (204) in thermal contact with the heat sink (202); a driver circuit (208) operative to provide the inpur voltage and current for the plurality of light sources (204); wherein the free-end (224) of each fin (218) is forked.