| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce a coil device in size by improving heat dissipation efficiency of a core body which is formed from a first core thermally coupled to a metallic housing and a second core thermally and magnetically coupled to the first core at a side far from the metallic housing, and built in the metallic housing.SOLUTION: A coil device comprises: a metallic housing 1; a core body which is formed from a first core 3 thermally coupled to the metallic housing and a second core 2 thermally and magnetically coupled to the first core at a side far from the metallic housing, and built in the metallic housing; a winding wire 10 which is wound around the core body and defines the first core and the second core as a magnetic path; a heat dissipation plate 4 brought into surface-contact with a surface of the second core at the side far from the metallic housing; and a presser spring 7 which elastically presses the heat dissipation plate against the surface of the second core at the side far from the metallic housing.</p> |
