| 摘要 |
PROBLEM TO BE SOLVED: To provide a winding component which improves heat dissipation and in which downsizing can be implemented, and a power unit to which the winding component is applied.SOLUTION: In a winding component 3A, a third coil part 44 of a coil winding 40 is mounted while being held between heat transfer sheets 91 and 92 and further held between a magnetic substance core 82 and a casing 10, and heat generated in the coil winding 40 is appropriately dissipated through the heat transfer sheet 92 to the casing 10. Heat generated in the magnetic substance core 80 is also appropriately dissipated through the heat transfer sheets 91 and 92 to the casing, thereby appropriately securing a heat transfer path from the coil winding 40 and the magnetic substance core 80. Further, in the winding component 3A, the coil winding 40 is disposed at a lower side of the magnetic substance core 80, such that downsizing of the winding component 3A can also be implemented in comparison with the conventional case where the coil winding 40 is disposed along a horizontal surface (XY plane). |
