| 摘要 |
PURPOSE: A radiation fin for heat exchanger is provided to achieve an improved radiation efficiency and allow the water formed at the surface of the radiator to be easily drained by improving the structure of radiation fin into cut type. CONSTITUTION: A radiator includes a plurality of radiation fins(2), wherein the radiation fin is injection molded into an integrated type and has a plurality of cut portions. A groove(4) is formed at an end of the cut portion of the radiation fin, and the radiation fin is divided into a plurality of radiation pieces(5) by the cut portion. A connection portion(6) is formed between radiation fins, and a water drain unit is formed by radiation pieces and the groove formed at the end of the cut portion of the radiation fin. Thus, the water formed at the surface of the radiator is drained in an easy manner.
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