Patent ID: 7845396

Claim:
A heat dissipation device with coarse surface capable of intensifying heat transfer comprising: a plate shaped main body with a periphery and an upper surface; a plurality of partition members being disposed slightly upright from said upper surface and apart a distance from each other to form a plurality of partitioned zones between said periphery and said partition members; a plurality of fish-scale-like parts being disposed at said partitioned zones orderly to form a plurality of rows of said fish-scale-like parts in each of said partition zones; wherein each of said fish-scale-like parts has a semi-circular vertical edge, a slant inclining toward said upper surface with a specific inclining angle with the bottom of the vertical edge intersecting the slant respectively; two ends of the respective vertical edges are sharp ends and the sharp ends at each of the rows of said fish-scale-like parts are joined to each other successively; each of said partition members has a first partition and a second partition extending from two opposite lateral sides of the periphery of said main body respectively and intersecting at the middle of said main body.