| 摘要 |
<p>PURPOSE:To make effective heat radiation of electromagnetic equipment and a switching element by arranging electromagnetic equipment on a position near to an output side terminal, contacting both the end parts of the iron core part of the electromagnetic equipment to a case inner surface, and arranging a switching element, to be fixed to a heat radiation plate, between the electromagnetic equipment and an input side terminal to fix the heat radiation plate to the case. CONSTITUTION:A case 21, electromagnetic equipment such as a transformer 41 having an iron core part 44 contained in the case 21, a switching element 51 such as a transistor built in the case 21, and an input side terminal 33 and an output side terminal 34, arranged in the opposite side respectively with the case 21, are provided. An electromagnetic equipment 41 is arranged on a position near to the output side terminal 34, both the end parts of the iron core part 44 of the electromagnetic equipment 41 are directly or indirectly contacted to the case 21 inner surface, and the switching element 51 fixed to a heat radiation plate 53 is arranged between the electromagnetic equipment 41 and the input side terminal 33 to fix the heat radiation plate 53 to the case 21. This permits the effective heat radiation of heat, generated with the electromagnetic equipment 41 and the switching element 51, to the case outside.</p> |
