| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a reactor heat radiation structure which reduces heat stress applied from a coil to a core and thereby achieves excellent durability.SOLUTION: A reactor heat radiation structure is formed by fixing a reactor 1 to a radiator 6. The reactor 1 includes: a core 2; a coil 3 which is partially embedded in the core 2 and formed by spirally winding a conductor wire; and a case 4. The core 2 includes a magnetic path formation part 21 forming an annular magnetic path including the inner peripheral side and the outer peripheral side of the coil 3. The coil 3 includes an exposed part 31 which is exposed from the core 2 and the case 4 in a part of an outer peripheral surface 301. An inner peripheral surface 302, the outer peripheral surface 301 excluding the exposed part 31, and a pair of axial end surfaces 303, 304 are covered by a bobbin 5 made of an insulation material. The exposed part 31 contacts with the radiator 6. A stress absorbing member 11 for absorbing stress is placed between at least a portion of the outer peripheral surface 301 of the coil 3, which is opposite to the exposed part 31, and the bobbin 5.</p> |
