Patent ID: 6301115
Filing Date: 2001-10-09
Classification: G06F,H01L

Abstract:
A heat sink device for releasing the heat generated by a CPU assembly disposed in a housing of an electronic device to the outside of the housing, the heat sink device for the electronic device being characterized in that a heat dissipating base plate of a heat sink has radiating fins on a lower surface of the base plate and a slot formed in an upper surface of the base plate and extending transversely thereof, a mount frame member being fitted to the base plate and provided with upright walls projecting upward respectively from front and rear opposite edge portions thereof and opposed to each other, the front and rear upright walls being each provided at an upper end portion thereof with an engaging projection and a fitting furrow positioned under and extending along the engaging projection, a fastening member having a striplike base fitted in the slot of the base plate of the heat sink and pinlike projections each projecting upward from a longitudinal intermediate portion of the striplike base, the radiating fins of the heat sink being inserted from above through an opening of the mount frame member to fit a lower half portion of the base plate into the opening, the base plate being provided at front and rear ends thereof with stepped portions engaged respectively with a front edge and a rear edge of the mount frame member defining the opening thereof, the CPU assembly being placed on the upper surface of the base plate of the heat sink, the fastening member having each of the pinlike projections thereof inserted from below through a hole in the CPU assembly, a circuit board of the CPU assembly having front and rear edge portions fixedly engaged with the respective engaging projections of the front and rear upright walls of the mount frame member while being fitted in the respective fitting furrows of the upright walls.