| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric power conversion system and an air conditioner which achieve further cost reduction of an electric component box incorporating multiple semiconductor devices having different allowable temperatures.SOLUTION: An electric component box includes: a housing 1; a printed board 4 where a semiconductor device 2 having a relatively high allowable temperature and a semiconductor device 3 having an allowable temperature lower than that of the semiconductor device 2 are mounted, the printed board 4 provided in the housing 1 so that the semiconductor devices 2, 3 face an air channel side surface of the housing 1; an opening 10 formed on the air channel side surface of the housing 1 so that a non-substrate side surface of the semiconductor device 3 is exposed to the air channel side A of the housing 1; and a radiator 5 covering the opening 10 and connected with the non-substrate side surface of the semiconductor device 3. |
