Patent ID: 6115252
Filing Date: 2000-09-05
Classification: F28D,G06F

Abstract:
A heat sink device for use in an electronic device for dissipating into the atmosphere outside a housing of the electronic device the heat generated by an electronic component disposed within the housing, the housing having a peripheral wall formed with a heat removal opening, a heat sink being disposed within the housing, the heat sink comprising a body having a heat pipe portion, and a radiation fin attached to the body in the vicinity of the heat removal opening and opposed to the opening, wherein the body comprises a base plate having two opposite surfaces, said base plate comprising a plurality of metal sheets joined to one another in superposed layers, a hollow portion being formed in a required pattern between one of the two metal sheets providing opposite surfaces of the base plate and the metal sheet adjacent to said one metal sheet, a working liquid being enclosed in the hollow portion to provide the heat pipe portion, the heat pipe portion having a heat receiving part for receiving the heat generated by the electronic component, the radiation fin being attached to the body at a location a predetermined distance away from the heat receiving part of the heat pipe portion, wherein the radiation fin is attached to one of the opposite surfaces of the base plate of the body which surface is flat and not forming the working liquid enclosing portion.