| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat sink that has a large surface area and can be manufactured at low cost.SOLUTION: A heat sink has a first heat sink member 2 having many radiation fins 5 which are formed on a first base plate 4 so as to be erected from the first base plate 4 and spaced from one another at predetermined intervals, and a second heat sink member 3 having many fin receiving portions 7 which can receive parts 5a of the fins 5 and are formed on a second base plate 6 so as to be erected from the second base plate 6 and spaced from one another at predetermined intervals. The parts 5a of the fins 5 protrude into the fin receiving portions 7, and the first heat sin member 2 and the second heat sin member 3 are joined to each other without being fastened between the fins 5 and the fin receiving portions 7 under the state that the parts 5a of the fins 5 are in contact with the fin receiving portions 7.SELECTED DRAWING: Figure 2 |
