| 摘要 |
PROBLEM TO BE SOLVED: To obtain a switching control apparatus whose heat dissipating efficiency by a radiating fin is increased, which prevents an electronic component in a case from being exposed to a high-temperature atmosphere and in which the replacement operation of a cooling fan is performed easily without lowering a cooling performance when the cooling fan is provided. SOLUTION: A radiating fin 27 is arranged so as to close an opening part on the surface of a case 21. The radiating fin 27 is constituted of a base part 28 attached to the opening part and of numerous fins 29 which are installed so as to protrude toward the upper part from the surface of the base part 28. On the other hand, a main circuit board on which various electronic components and the like have been mounted is housed in the horizontal direction inside the case 21, a switching element as a heat generating component out of the electronic components is mounted on the surface, and the switching element is fixed to the base part 28 at the radiating fin 27. Then, when the switching element generates heat, the heat is conducted to the radiating fin 27 so as to be dissipated. |
