Heat sink structure

Abstract

A heat sink structure includes a base and heat dissipating fins, which are arranged into at least two heat dissipating groups and integrally formed with the base. Lines connecting apexes of the heat dissipating fins in the heat dissipating group form a convex arc shape. In addition, The heat dissipating fins of the neighboring heat dissipating groups are arranged in the same pattern, or are arranged at different levels and in a gradually rising or gradually falling manner. Thus, the heat dissipation efficiency of the heat sink structure is enhanced.

1 . A heat sink structure, comprising:
 a base; and   at least two heat dissipating groups formed on the base and integrally formed with the base, wherein each of the heat dissipating groups comprises a plurality of heat dissipating fins with end portions corresponding to one another so that connecting lines connecting the end portions form a convex arc structure.   
     
     
         2 . The heat sink structure according to  claim 1 , wherein the end portions of the heat dissipating fins of each of the heat dissipating groups correspondingly form an arced structure, and the arced structures of the neighboring heat dissipating groups have the same height, so that the neighboring arced structures form continuous arcs with the same pattern. 
     
     
         3 . The heat sink structure according to  claim 1 , wherein the end portions of the heat dissipating fins of each of the heat dissipating groups correspondingly form an arced structure, and the arced structures of the neighboring heat dissipating groups have different heights, so that the neighboring arced structures form arced configurations which gradually rise and fall. 
     
     
         4 . The heat sink structure according to  claim 1 , wherein the base is a metal plate. 
     
     
         5 . The heat sink structure according to  claim 1 , wherein the base is an upper lamp shell of a light-emitting diode (LED) road lamp. 
     
     
         6 . A heat sink structure, comprising:
 a base; and   at least one heat dissipating group, which is formed on the base and integrally formed with the base, and comprises a plurality of heat dissipating fins, wherein an end portion of each of the heat dissipating fins is formed with an arced structure with arced sections.   
     
     
         7 . The heat sink structure according to  claim 6 , wherein the arced structures of the neighboring heat dissipating fins are contour structures and are staggered, so that an included angle is formed between a width extending direction of the heat dissipating fin and a connecting line connecting the arced sections of the neighboring heat dissipating fins. 
     
     
         8 . The heat sink structure according to  claim 6 , wherein the arced structure of each of the heat dissipating fins comprises the arced sections, which are connected together and have different heights, and the arced structures of the neighboring heat dissipating fins are staggered, so that an included angle is formed between a width extending direction of the heat dissipating fin and a connecting line connecting the arced sections of the neighboring heat dissipating fins. 
     
     
         9 . The heat sink structure according to  claim 6 , wherein the base is a metal plate. 
     
     
         10 . The heat sink structure according to  claim 6 , wherein the base is an upper lamp shell of a light-emitting diode (LED) road lamp.