| 主权项 |
1. A rotating electrical machine comprising:
a housing; a stator fixed to the housing; a rotating shaft attached rotatable relative to the housing; a rotor, fixed to the rotating shaft, which faces the stator in a radial direction; a feeding brush attached to the housing for supplying power to the rotor by slide-contacting against a slip ring disposed on a first end portion of the rotating shaft; a power conversion element that converts power generated in the stator into direct current, or converts the power supplied to the stator into alternating current; a flat-plate shaped heat radiating member having a first surface and a second surface, the first surface is disposed closer to the first end portion side of the rotating shaft than to the housing so as to face the housing, heat radiation fins being formed on the first surface, and the power conversion element being attached to the second surface; a control board disposed on the second surface side of the heat radiating member; a rotation sensor attached to the control board that faces a magnetic pole that is disposed in the first end portion of the rotating shaft; and a rear cover disposed at a position sandwiching the control board together with the heat radiating member so as to cover the control board, and an outer periphery of the rear cover faces an outer peripheral surface of the housing in an axial direction with a predetermined space therebetween; wherein, there is formed a first air passage that enables external air to flow in from between the housing and the rear cover and to advance in a radially inward direction after passing through the heat radiation fins; and a second air passage that enables the external air to pass through and around the first end portion of the rotating shaft after flowing into the second surface side of the heat radiating member from a radially outward direction. |
