| 摘要 |
PROBLEM TO BE SOLVED: To provide a cooling device for a heating element that suitably cools the heating element.SOLUTION: The cooling device for the heating element includes a first radiator 4 which has a principal surface where the heating element is arranged and the other principal surface where a radiation portion 41 having a plurality of first projections 42a to 42e and a first junction 43 surrounding the radiation portion 41 are formed, and a second radiator 5 which has a second junction 52 having a junction surface 53 joined to a junction surface 44 of the first junction 43, and is combined with the first radiator 4 by joining the second junction 52 to the first junction 43 to receive the radiation portion 41 to form a refrigerant flow passage, the second radiator 5 having second projections 51a to 51f inserted between adjacent ones of the first projections 42a to 42e. |
