Patent ID: 7764503

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 main portion, the spring being mounted around the main portion with a diameter smaller than that of the head portion; a base forming a number of securing arms, each securing arm defining a securing hole therein for extension of a corresponding fastener therethrough, the securing hole comprising an inner portion and an outer portion extending horizontally from the inner portion to an outside of the each securing arm, a width of the outer portion of the securing hole being smaller than the diameter of the fixing portion and being larger than the diameter of the main portion, the main portion horizontally entering into the inner portion of the securing hole through the outer portion, the fixing portion abutting against a bottom of the each securing arm, the spring resiliently compressed between a top of the each securing arm and the head portion of the bolt, a concave depressed from the each securing arm and in communication with the inner portion of the securing hole, the concave receiving a portion of the corresponding fastener therein, when the corresponding fastener is moved outwardly and horizontally along the securing hole, a wall of the each securing arm defining the concave engaging with the portion the corresponding fastener to block the corresponding fastener from moving horizontally and outwardly to the outside; and a number of fins extending upwardly from the base.