| 摘要 |
The present invention provides an AC generator for a vehicle, capable of improving the cooling capability and environmental resistance of a rectifier. The rectifier of the vehicle AC generator includes a positive electrode side heat sink (501) and negative electrode side heat sink (503) disposed in a stack positive and negative electrode side rectifying elements (502,504) provided on the heat sinks (501,503), and a terminal board. The positive electrode side heat sink (501) is equipped with cylindrical fixing portions (505) to which the positive electrode side rectifying elements (502) are fixed and radial fins (506) extending radially from the fixing portions (505). An opening portion (509) is surrounded by the fixing portion (505), the radial fin (506) and others to form an axial air flow passage. <IMAGE> |
