Heat dissipating device

Abstract

A heat dissipating device includes a carrier, a magnetic driving module installed on the carrier, two fixing rivets, and two swing structures. Each of the swing structures includes a blade, a positioning rivet, and a magnetic actuation fixed on the blade by using the positioning rivet. The two blades are respectively fixed on two opposite outer sides of the carrier by using the two fixing rivets, and the two blades are parallel to each other. When the magnetic driving module generates a magnetic field, the two magnetic actuations are moved by the magnetic field to swing the two blades.

What is claimed is: 
     
         1 . A heat dissipating device, comprising:
 a carrier;   a magnetic driving module installed to the carrier, wherein the magnetic driving module is configured to generate a magnetic field, the magnetic field defining two magnetic areas respectively having two opposite magnetisms, and the magnetic driving module being configured to cyclically change the magnetisms of the two magnetic areas by receiving a periodic power;   two swing structures fastened to the carrier, each of the two swing structures comprising:
 a blade having a mounting portion and a free end portion; 
 a positioning rivet; and 
 a magnetic actuation fixed on a portion of the blade by using the positioning rivet, wherein the portion of the blade is arranged between the mounting portion and the free end portion; and 
   two fixing rivets respectively fixing the mounting portions of the two blades to two opposite outer sides of the carrier, wherein the two blades are parallel to each other, and the two magnetic actuations are respectively arranged in the two magnetic areas, and wherein when the magnetic driving module generates the magnetic field, the two magnetic actuations are moved by the two magnetic areas to swing the free end portions of the two blades.   
     
     
         2 . The heat dissipating device as claimed in  claim 1 , wherein the carrier has two positioning troughs, and the mounting portions of the two blades are respectively positioned in the two positioning troughs. 
     
     
         3 . The heat dissipating device as claimed in  claim 2 , wherein the carrier includes two bases and a connecting portion connecting the two bases, the two bases being in a mirror symmetrical arrangement with respect to the connecting portion, and wherein each of the two bases has an inner surface and an outer surface, two opposite ends of the connecting portion are respectively connected to the inner surfaces of the two bases, and the two positioning troughs are respectively formed on the outer surfaces of the two bases. 
     
     
         4 . The heat dissipating device as claimed in  claim 3 , wherein each of the two fixing rivets includes a shaft portion and two abutting portions respectively and integrally connected to two opposite ends of the shaft portion, and an outside diameter of each of the abutting portions is larger than that of each of the shaft portions, and wherein the shaft portions of the two fixing rivets are respectively inserted into the mounting portions of the two blades and are respectively inserted into the two bases, and the two abutting portions of each of the fixing rivets are respectively abutted against the mounting portion of the corresponding blade and the inner surface of the corresponding base. 
     
     
         5 . The heat dissipating device as claimed in  claim 4 , wherein one of the two abutting portions of each of the two fixing rivets abutted against the mounting portion of the corresponding blade is arranged in the positioning trough of the corresponding base. 
     
     
         6 . The heat dissipating device as claimed in  claim 1 , wherein in each of the two swing structures, the magnetic actuation includes at least one magnet and at least one buffering pad abutted against the blade, and the at least one magnet and the at least one buffering pad are fixed on the blade by the positioning rivet. 
     
     
         7 . The heat dissipating device as claimed in  claim 3 , wherein each of the two bases has two opposite end surfaces, and at least one fixing hole is recessed in at least one of the two end surfaces of each of the two bases. 
     
     
         8 . The heat dissipating device as claimed in  claim 3 , wherein the magnetic driving module includes a core and a coil, the core coupling into the connecting portion of the carrier in a tight-fitting manner, and the coil wounding on an outside of the connecting portion of the carrier. 
     
     
         9 . The heat dissipating device as claimed in  claim 3 , wherein in each of the two bases, the positioning trough includes a bottom flange formed on a bottom edge of the outer surface and at least one side flange formed on at least one side edge of the outer surface. 
     
     
         10 . The heat dissipating device as claimed in  claim 3 , wherein in each of the two bases, the positioning trough includes a bottom flange formed on a bottom edge of the outer surface and two side flanges respectively formed on two opposite side edges of the outer surface.