A rotating electric machine, comprising a rotating machine main body, a power conversion unit provided on one side on an axis of rotation of the rotating machine main body and electrically connected to the rotating machine main body and pulley means provided on the other side on the axis of rotation of the rotating machine main body, in which rotating electric machine: the rotating machine main body has a pulley means side bracket and a non-pulley means side bracket that configure a housing, a rotor is supported in such a way as to be able to rotate, by the pulley means side bracket and the non-pulley means side bracket, a stator, which has a stator core and a stator winding, is fixed by the pulley means side bracket and the non-pulley means side bracket and is disposed coaxially in such a way as to enclose the rotor, and blades are attached to a non-pulley means side of the rotor wherein a flow path along which gas as a refrigerant is caused to flow by rotation of the blades, cooling the power conversion unit and the stator, is formed, the flow path having a flow path inflow portion in a radial direction outer peripheral face of the power conversion unit and a flow path outflow portion in a radial direction outer peripheral face of the non-pulley means side bracket, the flow path inflow portion and the flow path outflow portion being disposed separated in a rotation axis direction; wherein in the flow path outflow portion, a first flow path outflow portion thickness configuring a rotation axis direction thickness, protruding from a non-pulley means side end face side of the non-pulley means side bracket toward the pulley means side, inward in the radial direction from the flow path outflow portion, and a second flow path outflow portion thickness, configuring a radial direction thickness of the flow path outflow portion in the outer peripheral face of the non-pulley means side bracket, are disposed in such a way that at least one portion of a third flow path outflow portion thickness, which is a radial direction thickness of the first flow path outflow portion thickness, and one portion of the second flow path outflow portion thickness, overlap in such a way that there is no opening between the first flow path outflow portion thickness and the second flow path outflow portion thickness, when seen in the rotation axis direction, wherein either (a) the second flow path outflow portion thickness is thicker in a radial direction than the third flow path outflow portion thickness and/or (b) the second flow path outflow portion thickness and the third flow path outflow portion thickness overlap in only one portion, whereby the first flow path outflow portion thickness forms a first separating portion restricting the heated refrigerant, which flows out from the flow path outflow portion, from flowing in again by the flow path inflow portion. the rotating machine main body has a pulley means side bracket and a non-pulley means side bracket that configure a housing, a rotor is supported in such a way as to be able to rotate, by the pulley means side bracket and the non-pulley means side bracket, a stator, which has a stator core and a stator winding, is fixed by the pulley means side bracket and the non-pulley means side bracket and is disposed coaxially in such a way as to enclose the rotor, and blades are attached to a non-pulley means side of the rotor wherein a flow path along which gas as a refrigerant is caused to flow by rotation of the blades, cooling the power conversion unit and the stator, is formed, the flow path having a flow path inflow portion in a radial direction outer peripheral face of the power conversion unit and a flow path outflow portion in a radial direction outer peripheral face of the non-pulley means side bracket, the flow path inflow portion and the flow path outflow portion being disposed separated in a rotation axis direction; wherein in the flow path outflow portion, a first flow path outflow portion thickness configuring a rotation axis direction thickness, protruding from a non-pulley means side end face side of the non-pulley means side bracket toward the pulley means side, inward in the radial direction from the flow path outflow portion, and a second flow path outflow portion thickness, configuring a radial direction thickness of the flow path outflow portion in the outer peripheral face of the non-pulley means side bracket, are disposed in such a way that at least one portion of a third flow path outflow portion thickness, which is a radial direction thickness of the first flow path outflow portion thickness, and one portion of the second flow path outflow portion thickness, overlap in such a way that there is no opening between the first flow path outflow portion thickness and the second flow path outflow portion thickness, when seen in the rotation axis direction, wherein either (a) the second flow path outflow portion thickness is thicker in a radial direction than the third flow path outflow portion thickness and/or (b) the second flow path outflow portion thickness and the third flow path outflow portion thickness overlap in only one portion, whereby the first flow path outflow portion thickness forms a first separating portion restricting the heated refrigerant, which flows out from the flow path outflow portion, from flowing in again by the flow path inflow portion.