Patent ID: 8230905

Claim:
A heat dissipation device comprising: a fin group defining two elongated slots in two opposite lateral sides thereof and two receiving grooves in two opposing inner faces of each elongated slot, the receiving grooves having openings at a top of the fin group; two fan holders each having a main plate attached to a lateral side of the fin group and a locking plate connected to an inner side of the main plate and being inserted into the two receiving grooves of a corresponding elongated slot from the openings at the top of the fin group; and a fan being secured to retaining plates of the two fan holders at a front side of the fin group; wherein the locking plate comprises a locking part separated from the main plate by two connecting parts respectively extending obliquely from two opposite ends of the locking part to connect the main plate; and wherein two operating screws extend through the main plate to be engagingly received in two locking holes defined in the locking part of the locking plate and can be further screwed into the locking holes to force the locking part to move toward the main plate to thus secure each fan holder to the fin group.