Patent ID: 8122945

Claim:
A heat dissipation device, comprising: a number of fasteners each comprising a bolt and a spring, the bolt comprising a main portion, a fixing portion formed at a bottom end of the main portion with a diameter greater than that of the main portion, and a head portion formed at a top end of the main portion with a diameter greater than that of the fixing portion, the spring being mounted around the main portion; a base forming a number of securing members, each securing member defining a securing hole therein for extension of a corresponding fastener therethrough, the securing hole comprising a large portion, a small portion communicating with the large portion, and a concave depressed from a top side of the securing member around the small portion, a diameter of the small portion being greater than that of the main portion and smaller than that of the fixing portion of the bolt, a diameter of the large portion being greater than that of the fixing portion and smaller than that of the spring, the main portion of the bolt extending through the small portion with the fixing portion abutting a bottom side of the securing member, the spring being received in the concave of the securing hole and resiliently abutting the head portion of the bolt and a portion of the securing member in the concave; and a plurality of parallel fins extending upwardly from the base.