| 摘要 |
A cooler capable of reducing the fabrication cost is provided. In the cooler, in which electronic parts 6 are held between neighboring tubes 1, each of the tubes 1 is formed by joining the edges of plates 1a, 1b, each of which is formed into a predetermined shape by press molding, and fins 5 for accelerating heat exchange are arranged in the tube 1. As an inner wall conventionally exists when the tube 1 is manufactured by extrusion, can be removed, it is no longer necessary to remove the inner wall by machining, therefore, the fabrication cost can be reduced.
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