Heat pipe structure

Abstract

A heat pipe structure includes a hollow tube body and a plurality of capillary structures. A first region and a second region are defined in the hollow tube body. The capillary structure is disposed on the first region. A diameter of the second region is larger than a diameter of the first region.

What is claimed is: 
     
         1 . A heat pipe structure, comprising
 a hollow tube body, defining a first region and a second region; and   a plurality of capillary structures disposed on the first region, wherein the diameter of the second region is larger than the diameter of the first region.   
     
     
         2 . The heat pipe structure according to  claim 1 , wherein the first region includes a first surface and a second surface, and the capillary structure is divided into a first part and a second part. 
     
     
         3 . The heat pipe structure according to  claim 2 , wherein the first part contacts the first surface. 
     
     
         4 . The heat pipe structure according to  claim 3 , wherein the first part is connected to the second part. 
     
     
         5 . The heat pipe structure according to  claim 1 , wherein the second region is divided into at least two subspaces. 
     
     
         6 . The heat pipe structure according to  claim 5 , wherein the diameter of each of the subspaces is equal or not equal to that of the first region. 
     
     
         7 . The heat pipe structure according to  claim 5 , wherein the diameters of the subspaces are equal or not equal. 
     
     
         8 . The heat pipe structure according to  claim 1 , wherein the capillary structure is metal sinters, micro grooves, fibers, mental nets or the combinations thereof.