| 摘要 |
PROBLEM TO BE SOLVED: To improve cooling performance of a heating coil as well as reducing the number of components to simplify a structure and improve assembling performance.SOLUTION: A base member 17 molded by a resin material is arranged below a heating coil 3c, and an air-blowing rib (wall face) 16 for drawing a cooling air to the lower side of the heating coil 3c and a part of a coil supporting shaft 18 for supporting the heating coil 3c upward and forming a space for passing the air downward of the heating coil 3c are molded integrally on the base member 17. |
