Patent ID: 8267157

Claim:
A heat dissipation device comprising: a base comprising a substrate and a conducting plate attached to a bottom of the substrate; a fin group placed on the base; and a plurality of heat pipes having evaporating sections and condensing sections extending upwardly from the evaporating sections; wherein the evaporating sections are wholly accommodated in the substrate and in contact with the conducting plate, and the condensing sections are extended upwardly through the fin group, wherein the substrate is made of aluminum and comprises a frame and a supporting plate formed on a bottom of the frame, while the conducting plate is made of copper and engages a bottom of the supporting plate; wherein the evaporating sections of the heat pipes are supported on the supporting plate and surrounded by the frame; wherein the conducting plate have a protruding part extending upwardly from a top thereof and extending through the supporting plate to contact the evaporating sections of the heat pipes; wherein an opening is defined in the supporting plate and receives the protruding part of the conducting plate therein; wherein the substrate has a beam spanning over the supporting plate and connected to two opposite inner portions of the frame; wherein the beam defines a slot therein and has two pressing plates extending outwardly and horizontally from two opposite lateral sides of an upper portion thereof