Patent ID: 8562178

Claim:
A passive heat radiator, comprising: a heat radiating base plate; a sealing housing connected to the heat radiating base plate; a heat absorbing ending face disposed at one side of the heat radiating base plate deviated from the sealing housing, and adapted to mount a heat generating element; and heat radiating fins connected to the sealing housing; wherein the sealing housing comprises: a slablike upstanding plate defining a cavity and connected to the heat radiating base plate; a wick disposed in the cavity of the sealing housing, wherein the cavity is under vacuum and poured with liquid working substance having heat evaporation characteristics and at least a portion of the wick is impregnated with the liquid working substance; and a supporting component disposed in the cavity in the sealing housing, adapted to eliminate deformation of the sealing housing due to pressure generated by external atmosphere and evaporation of the liquid working substance on the sealing housing.