| 摘要 |
PROBLEM TO BE SOLVED: To reduce manufacturing cost of a sylindrical heat sink having protrusions exhibiting heat dissipation effect by combining a plurality of longitudinally split heat sink sections. SOLUTION: A fixing piece 11 having a part fixing face 11a on one side face and a heat dissipating face 11b on the other side face is coupled, at one side edge thereof, perpendicularly with a side wall piece 12 and, at the other side edge thereof, perpendicularly with a coupling piece 13 to construct a pair of split heat sink sections 10. Protrusions 11c project from the heat dissipating face 11b of the fixing piece 11 in the pair of split heat sink sections 10 and a screw hole 12a is made in the side wall piece 12. A tap 13a is formed in the coupling piece 13 and the pair of split heat sink sections 10 are fitted while facing the heat dissipating faces 11b each other and secured by means of screws thus reducing manufacturing cost. |
