| 摘要 |
PURPOSE:To reduce the uneasy feeling for an operater and also reduce cost, by making the thickness of the enclosure supported portion of an operation member maximum, and making the overall surface temperature low. CONSTITUTION:Heat emitted from an noise eliminating coil 17 and a semiconductor switching element 18 within an enclosure 11 is transmitted to an operation member 41 mainly from a support plate 13 through an operater 34 and fulcrum portions 36. The thickness of the member 41 is largest at receiving piece 43 portions which come into contact with the plate 13, and heat transmission from the body 11 is restrained. Also, the thickness of the member 41 becomes gradually smaller toward the outer perimeter side from receiving piece 43 portions, and heat is uniformly transmitted comparatively to the whole of the front surface of the member 41. As a result, the temperature distribution on the front surface of the member 41 becomes comparatively uniform, and the overall temperature becomes low. Accordingly, the sense of heat becomes uniform and also low. As a result, an operater can obtain the sense of relief, and also the saving of materials and the reduction of cost can be realized. |
