| 摘要 |
PROBLEM TO BE SOLVED: To obtain an AC generator for vehicles whose local temperature increase is prevented by flattening the temperature distribution of the inside of a rectifier unit. SOLUTION: This is an AC generator provided with a case, a rotor put rotatably in this case, a stator which is fixed to the case and has stator coils wound on the stator, and a rectifier unit 100 for rectifying alternating current generated in the stator coils into direct current. In the rectifier unit, a plurality of positive pole side diodes 51a are fixed to a positive pole side heat sink 54 in an arched band shape, and a plurality of negative pole side diodes 52a are fixed to a negative pole side heat sink 55. One end sides of these diodes are arranged staggered along the circumferential direction. |
