Thermal module and method of manufacturing same

Abstract

A thermal module and a method of manufacturing same are disclosed. The thermal module includes a radiating fin assembly and a base. The base has a bottom and a plurality of slot vertically extending through the base in a thickness direction thereof. The radiating fin assembly includes a plurality of radiating fins, each of which has a heat-dissipation end and a heat-absorption end. The heat-absorption ends are correspondingly extended through the slots and bent to bear on the bottom for contacting with a heat-producing element. Heat produced by the heat-producing element is absorbed by the heat-absorption ends and directly transferred from the heat-absorption ends to the heat-dissipation ends without the problem of thermal resistance. Therefore, upgraded heat transfer efficiency and excellent heat dissipation effect can be achieved with the thermal module.

1 . A thermal module, comprising:
 a base having a plurality of slots and a bottom, the slots vertically extending through the base in a thickness direction thereof; and   a radiating fin assembly having a plurality of radiating fins, each of the radiating fins having a heat-dissipation end and a heat-absorption end; the heat-absorption ends of the radiating fins being respectively extended through the slots to downward project from the base, and the downward projected heat-absorption ends being bent to bear on the bottom of the base.   
     
     
         2 . The thermal module as claimed in  claim 1 , wherein the heat-absorption ends after bending are oriented perpendicular to the heat-dissipation ends of the radiating fins. 
     
     
         3 . The thermal module as claimed in  claim 1 , wherein the heat-absorption ends of the radiating fins together define a heat-absorption section. 
     
     
         4 . The thermal module as claimed in  claim 1 , wherein the heat-dissipation ends of the radiating fins together define a heat-dissipation section. 
     
     
         5 . The thermal module as claimed in  claim 3 , wherein the heat-absorption section bears on a heat-producing element for absorbing heat produced by the heat-producing element. 
     
     
         6 . The thermal module as claimed in  claim 1 , wherein the slots are parallelly arranged on the base to equally space from one another. 
     
     
         7 . The thermal module as claimed in  claim 1 , wherein the slots are parallelly arranged on the base to non-equally space from one another. 
     
     
         8 . The thermal module as claimed in  claim 1 , wherein the base is further provided at locations between the slots and outer sides of the base with a plurality of coupling slots, and at the bottom with at least one downward opened recess; the recess being communicable with the slots, and the heat-absorption ends downward projected from the base being bent to bear on an inner wall surface of the at least one recess. 
     
     
         9 . The thermal module as claimed in  claim 8 , further comprising at least one heat pipe having a vaporizing end and a condensing end; the vaporizing end being correspondingly fitted in the recess, and having a first side tightly bearing on the heat-absorption ends of the radiating fins and a second side contacting with a heat-producing element; and the condensing end being extended through the heat-dissipation ends of the radiating fins. 
     
     
         10 . A method of manufacturing thermal module, comprising the following steps:
 providing a base having a plurality of slots, and a plurality of radiating fins; and the slots vertically extending through the base in a thickness direction thereof;   correspondingly extending the radiating fins through the slots, so that the radiating fins respectively have one end downward projected from the base; and   bending the downward projected ends of the radiating fins for them to bear on a bottom of the base.   
     
     
         11 . The thermal module manufacturing method as claimed in  claim 10 , wherein the downward projected ends of the radiating fins are mechanically bent to bear on the bottom of the base. 
     
     
         12 . The thermal module manufacturing method as claimed in  claim 11 , wherein the downward projected ends of the radiating fins are mechanically bent in a manner selected from the group consisting of rolling and stamping. 
     
     
         13 . The thermal module manufacturing method as claimed in  claim 10 , wherein the slots are parallelly formed on the base to equally space from one another. 
     
     
         14 . The thermal module manufacturing method as claimed in  claim 10 , wherein the slots are parallelly formed on the base to non-equally space from one another.