COOLING DEVICE AND MOTOR

摘要

[Problem] To provide a cooling device having a structure capable of improving the cooling efficiency while suppressing an increase in size. [Solution] A cooling device that cools a heating element, according to one aspect of the present invention, is provided with: a cooling chamber for cooling the heating element with a first cooling medium; a radiator chamber for releasing the heat of the first cooling medium to the outside; and a first connection path and a second connection path for connecting the cooling chamber and the radiator chamber. At least part of the radiator chamber is located father toward the upper side in the vertical direction than the cooling chamber is. A portion where the first connection path and the radiator chamber are connected is located at the same position, in the vertical direction, as a portion where the first connection path and the cooling chamber are connected or is located father toward the upper side than the portion where the first connection path and the cooling chamber are connected is. When part of the first cooling medium in the cooling chamber is gasified, at least part of the gasified first cooling medium moves into the first connection path, thus causing a circulation in which the first cooling medium in the cooling chamber flows into the radiator chamber via the first connection path, and the first cooling medium in the radiator chamber flows into the cooling chamber via the second connection path.