Heat dissipation apparatus

Abstract

A heat dissipation apparatus may include a heat dissipation plate, which is made of metal materials, and has a first end and a second end thereon. A plurality of slots formed on the heat dissipation plate are located between the first end and the second end, and a plurality of fin units are located between the two ends of the slots. A serrated surface is formed transversely on at least one side of the fin unit for enhancing the ductility thereof, and the fin unit protrudes from the heat dissipation plate. In one embodiment, the heat dissipation plate is circular, and the first end is located on a middle portion thereof, while the second end is located on an edge portions thereof, so the fin units are radially surrounded thereon.

What is claimed is: 
     
         1 . A heat dissipation apparatus comprising: a heat dissipation plate made of metal materials and having a first end and a second end; a plurality of slots formed on the heat dissipation apparatus located between the first end and the second end; a fin unit located between the first and second ends of each slot, wherein a serrated surface is formed transversely on at least one side of the fin unit for enhancing the ductility thereof, and the fin unit protrudes from the heat dissipation plate, so a surface area of the heat dissipation plate increases significantly by increasing length of the fin units and the serrated surface to enhance heat dissipation efficiency and lower production costs. 
     
     
         2 . The heat dissipation apparatus of  claim 1 , wherein the heat dissipation plate is circular, and the first end is located on a middle portion thereof, while the second end is located on an edge portions thereof, so the fin units are radially surrounded thereon. 
     
     
         3 . The heat dissipation apparatus of  claim 1 , wherein the fin unit protrudes from the heat dissipation plate and is shaped into a hollow triangle. 
     
     
         4 . The heat dissipation apparatus of  claim 1 , wherein the shape of the serrated surface of the fin unit is triangle. 
     
     
         5 . The heat dissipation apparatus of  claim 1 , wherein a lower portion of serrated surface is perpendicular to the surface of the heat dissipation plate. 
     
     
         6 . The heat dissipation apparatus of  claim 1 , wherein the shape of the serrated surface of the fin unit is semi-circular. 
     
     
         7 . The heat dissipation apparatus of  claim 1 , wherein an upper portion and a lower portion of the serrated surface are aligned, so the thickness of the fin unit is uniform. 
     
     
         8 . The heat dissipation apparatus of  claim 1 , wherein an upper portion and a lower portion of the serrated surface are misaligned, so the thickness of the fin unit varies. 
     
     
         9 . The heat dissipation apparatus of  claim 1 , wherein a triangle-shaped space is formed between two nearby fin units toward the second end and the fin units are divided to form a Y-shaped unit.