Patent ID: 7117928

Claim:
A heat sink, comprising: a base having a first side adapted to be in contact with a heat-generating electronic element and a second side opposed to the first side, said base including a pair of side walls each having a non-flat waveform surface, said side walls projecting upwardly from the base and having a first thickness; a set of fins formed on the second side of the base, each of said fins having a second thickness being less than said first thickness of the side wall, said fins disposed between said side walls of the base and each said non-flat waveform surface of said side walls facing at least one of said fins for increasing an area of heat-dissipation; and a non-rectilinear air channel being formed between two of the fins adjacent to each other and between each said non-flat waveform surface of said side walls and one of said fins, with a length of the non-rectilinear air channel being greater than a length of the base along an extending direction of the fins on the base; and a heat dissipating fan being attached to a side of the base to form a cooler for driving air from an end of the respective air channel through another end of the respective air channel.