| 摘要 |
PROBLEM TO BE SOLVED: To provide a light shield case with good workability capable of sufficiently shielding a leakage magnetic flux.SOLUTION: Rectangular side face shield plates 8, 10 are respectively formed on side edges 2a, 2b of an approximate rectangular bottom face shield plate 2 almost vertically to the bottom face shield plate 2, and a rectangular back face shield plate 12 is provided on a back face edge 2c of the bottom face shield plate 2 almost vertically to the bottom face shield plate 2 while both edges are adjacent to the side face shield plates 8, 10. The bottom face shield plate 2, the side face shield plates 8, 10 and the back face shield plate 12 form a space surrounding a coil section 1. A deposition section 14 magnetically couples at least one part of a portion at which the side face shield plate 8 is adjacent to the back face shield plate 12, and the deposition section 14 magnetically couples at least one part of a portion at which the side shield plate 10 is adjacent to the back shield plate 12. |
