Heat radiating fin

Abstract

A heat radiating fin includes a flat body having a front side and a rear side, a plurality of protruded portions formed on the front side of the flat body, and a plurality of recessed portions correspondingly formed on the rear side of the flat body behind the protruded portions. The protruded portions on the flat body of a first heat radiating fin are partially extendable into corresponding recessed portions on the flat body of a second heat radiating fin located before the first one, allowing the first and the second heat radiating fins to be easily and stably stacked.

1 . A heat radiating fin, comprising a flat body having a front side and a rear side, a plurality of protruded portions formed on the front side of the flat body, and a plurality of recessed portions correspondingly formed on the rear side of the flat body behind the protruded portions; and the protruded portions on the flat body of a first heat radiating fin being partially extendable into corresponding recessed portions on the flat body of a second heat radiating fin located before the first heat radiating fin, allowing the first and second heat radiating fins to be stably stacked. 
   
   
       2 . The heat radiating fin as claimed in  claim 1 , wherein the protruded portions are provided around an outer surface at a predetermined position with a plurality of dots to prevent the protruded portions from being excessively extended into the corresponding recessed portions. 
   
   
       3 . The heat radiating fin as claimed in  claim 1 , wherein the protruded portions are provided around an outer surface at a predetermined position with an annular rib to prevent the protruded portions from being excessively extended into the corresponding recessed portions. 
   
   
       4 . The heat radiating fin as claimed in  claim 1 , wherein the protruded portions are provided around an outer surface at a predetermined position with a plurality of spaced ribs to prevent the protruded portions from being excessively extended into the corresponding recessed portions. 
   
   
       5 . The heat radiating fin as claimed in  claim 1 , wherein the protruded portions are provided around an outer surface at a predetermined position with a plurality of spaced and raised areas to prevent the protruded portions from being excessively extended into the corresponding recessed portions. 
   
   
       6 . The heat radiating fin as claimed in  claim 1 , further comprising at least one spacer protrusion of a predetermined height formed on the front side of the flat body; whereby when the first and second flat bodies are stacked, the spacer protrusion on the first flat body is in contact with the rear side of the second flat body, allowing the stacked first and second flat bodies to always maintain a fixed spacing therebetween.