Abstract: A transmission device is provided in which a parking mechanism and a breather chamber are provided within a power-transmission case, the breather chamber being present at least above an input gear and providing communication between the interior of the power-transmission case and the exterior of the power-transmission case, wherein the breather chamber, which is present at least above the input gear and providing communication between the interior of the power-transmission case and the exterior of the power-transmission case, extends further outward than the input gear in an arrangement direction of the input gear and the output gear, and part of the parking mechanism is disposed within the breather chamber. Thus, it is possible to increase the capacity of a breather chamber while avoiding an increase in the size of a transmission device.

Abstract: A transmission device is provided in which a parking mechanism and a breather chamber are provided within a power-transmission case, the breather chamber being present at least above an input gear and providing communication between the interior of the power-transmission case and the exterior of the power-transmission case, wherein the breather chamber, which is present at least above the input gear and providing communication between the interior of the power-transmission case and the exterior of the power-transmission case, extends further outward than the input gear in an arrangement direction of the input gear and the output gear, and part of the parking mechanism is disposed within the breather chamber. Thus, it is possible to increase the capacity of a breather chamber while avoiding an increase in the size of a transmission device.

Abstract: An inverter includes: a housing base which includes a front area and a rear area opposite to the front area; a main body which is arranged in the front area of the housing base and houses a plurality of electronic components forming a power conversion circuit; a first duct which is arranged in the rear area of the housing base and includes a first end connected to an intake port of cooling air; a first heat sink which is arranged in the rear area of the housing base and includes a first fin and a first heat sink base extending perpendicular to an extension direction of the first duct; and a reactor which is arranged in the heat sink base in the rear area of the housing base, and generates heat at the time of energization.

Abstract: An inverter includes: a housing base which includes a front area and a rear area opposite to the front area; a main body which is arranged in the front area of the housing base and houses a plurality of electronic components forming a power conversion circuit; a first duct which is arranged in the rear area of the housing base and includes a first end connected to an intake port of cooling air; a first heat sink which is arranged in the rear area of the housing base and includes a first fin and a first heat sink base extending perpendicular to an extension direction of the first duct; and a reactor which is arranged in the heat sink base in the rear area of the housing base, and generates heat at the time of energization.