Flat heat pipe structure

Abstract

The instant disclosure relates to a flat heat pipe structure, which includes a flat tubing and a support member. The flat tubing has two opposed main walls and two opposed connecting walls connected thereto. The main and connecting walls cooperatively define an internal space. The inner surfaces of the flat tubing are covered with a capillary structure. The support member is disposed in the internal space of the flat tubing and has at least one support arm. The support arm extends in the longitudinal direction of the flat tubing. The support arm has two opposed surfaces abutting to the capillary structure of the main walls.

What is claimed is: 
     
         1 . A heat dissipation device, comprising:
 a flat tubing having two opposed main walls and two connecting walls connected thereto, wherein
 the main walls and the connecting walls form an inner surface of the flat tubing, 
 the inner surface at least partially encloses an internal space of the flat tubing, and 
 a first capillary structure is disposed on the inner surface; and 
   only one support arm disposed in the internal space, wherein
 the support arm extends along a longitudinal direction of the flat tubing, 
 the support arm has a first longitudinal surface, a second longitudinal surface opposite the first longitudinal surface, a first side surface connected to the first longitudinal surface and the second longitudinal surface, and a second side surface opposite the first side surface and connected to the first longitudinal surface and the second longitudinal surface, 
 at least one of the first longitudinal surface and the second longitudinal surface contacts the first capillary structure, and 
 a second capillary structure is disposed on the first side surface and the second side surface. 
   
     
     
         2 . The heat dissipation device of  claim 1 , wherein the support arm includes a first end and a second end longitudinally opposite the first end, and
 the first longitudinal surface, the second longitudinal surface, the first side surface, and the second side surface each extends continuously from the first end to second end.   
     
     
         3 . The heat dissipation device of  claim 1 , wherein the support arm is spaced from the connecting walls, and wherein the support arm and the first and second connecting walls cooperatively define at least one longitudinal passageway in the internal space. 
     
     
         4 . The heat dissipation device of  claim 3 , wherein the support arm and the first and second connecting walls cooperatively define at least two longitudinal passageways on opposite sides of the support arm. 
     
     
         5 . The heat dissipation device of  claim 3 , wherein the second capillary structure and the first capillary structure are arranged in the at least one longitudinal passageway. 
     
     
         6 . The heat dissipation device of  claim 1 , wherein the first capillary structure and the second capillary structure include one of a metal mesh, grooves, and a sintered metal powder. 
     
     
         7 . The heat dissipation device of  claim 1 , wherein the support arm includes at least one bend. 
     
     
         8 . The heat dissipation device of  claim 1 , wherein the second capillary structure is disposed only on the first side surface and the second side surface. 
     
     
         9 . The heat dissipation device of  claim 1 , wherein the flat tubing including the two opposed main walls and two connecting walls is a unitary structure.