| 摘要 |
PURPOSE:To unify distribution of the velocity of the wide while remarkably improving radiation efficiency of a cooling fin by uniformly arranging cooling fins ranging over nearly the whole region of the circulation path of the cooling air. CONSTITUTION:Serrated small pieces 5-1-5-3 shifted from the serration-starting positions 5a-1-5a-3 form groups to be bent sideways downwards from the serration-starting positions 5a-1-5a-3 and these are turned up sideways at the bent parts 5c-1-5c-3 while shifting their positions respectively. As a result, the neighboring serrated small pieces 5-1-5-3 turning to the same direction hold a positional relation having a gap C1 between the serrated small pieces 5-1-5-2 while a gap C2 between the serrated small pieces 5-2-5-3 seen from the direction of the cooling air flow. The other serrated small pieces are also similarly formed. In this way, the cooling fins are uniformly arranged ranging over nearly the whole region of the cooling air circulation path thus unifying distribution of the velocity of the wind and remarkably improving radiation efficiency. |
