Patent attributes
A cooling device including a container to which at least one heating element is thermally connected, a primary refrigerant, and a condensation tube through which a secondary refrigerant flows, wherein a container inner surface area increasing portion is formed on an inner surface of the container to which the heating element is thermally connected, and a plate-shaped member is provided, that includes a shielding portion that is located above the container inner surface area increasing portion in a direction of gravity and below the condensation tube in the direction of gravity, with at least a part of the shielding portion not immersed in the primary refrigerant in a liquid phase, and the plate-shaped member includes a support portion extending from the shielding portion, in a part of a periphery along an orthogonal direction to the direction of gravity, of the container inner surface area increasing portion.