Patent ID: 8403542

Claim:
An LED (light-emitting diode) lamp comprising: a rectifier ( 1 ) for converting AC (alternating current) into DC (direct current); an inverted cup shaped heat sink ( 3 ) comprising a plurality of spaced, elongated heat radiating members ( 32 ) projecting upward from top, and a plurality of spaced hollow cylindrical heat radiating elements ( 33 ) arranged around the heat radiating members ( 32 ); a mounting plate ( 2 ) fastened between the rectifier ( 1 ) and the heat radiating members ( 32 ); a plurality of L-shaped heat conduction members ( 5 ) each having a longitudinal part inserted through the heat radiating element ( 32 ) and a lateral part engaged with bottom of the heat sink ( 3 ), the number of the heat conduction members ( 5 ) being less than that of the heat radiating elements ( 33 ); and a circuit board ( 4 ) secured to the bottom of the heat sink ( 3 ) to fasten the lateral parts of the heat conduction members ( 5 ), the circuit board ( 4 ) comprising a plurality of LEDs ( 42 ) each electrically connected to the rectifier ( 1 ) and being in contact with the lateral parts of the heat conduction members ( 5 ), wherein the heat sink ( 3 ) further comprises a plurality of first heat radiating plates ( 35 ) each having one end put on the longitudinal part of the heat conduction member ( 5 ), a plurality of second heat radiating plates ( 36 ) each having one end fastened in the heat radiating element ( 33 ), and a plurality of third heat radiating plates ( 37 ) releasably secured to the heat sink ( 3 ); wherein the first, second, and third heat radiating plates ( 35 , 36 , 37 ) are arranged around the heat radiating element ( 32 ); and wherein each of the first, second, and third heat radiating plates ( 35 , 36 , 37 ) comprises a plurality of openings ( 39 ) and shaped top and bottom edges ( 38 ).