Patent ID: 7473011

Claim:
An LED lighting apparatus comprising: a tubular housing; and a heat sink assembly for mounting an LED module to the inside of the housing, the assembly comprising: a first plate having inner and outer faces and a peripheral edge; a second plate movable with respect to the first plate and having inner and outer faces and an inwardly-tapered peripheral camming surface; an expandable ring sandwiched between the first and second plates and having an inward peripheral edge engaging the camming surface and an outward heat-transfer surface expandable to beyond the peripheries of the first and second plates; and a sandwiching-device adjustably interconnecting the first and second plates such that sandwiching of the ring facilitates heat-transfer engagement of the heat-transfer surface with the inside of the housing whereby, upon tightening of the sandwiching device, expandable ring is sandwiched by first and second plates thereby expanding the ring against the sides of the tubular housing to facilitate transfer of heat from the LED module to the heat sink module and therefrom to the tubular housing and for dissipation to the atmosphere.