| 摘要 |
PROBLEM TO BE SOLVED: To visually confirm an operational state over the wide range by housing inside a control unit for controlling current supply to a heater wire of a main body, constituting an opening part of a controller box formed by opening a part from the side surface over the top surface with a light transmitting material, and emitting light from the inside of the box. SOLUTION: A controller box 3 installed at a corner of a main body 2 contains a control means 10 for controlling current supply to a heater wire 1 of the main box 2; a power source switch 5; a knob 5t of the power source switch 5; and a volume 6 A light transmitting means 8 made of a material with relatively high transparency and light transmitting capability, fixed to an opening part widely opened from the side surface over the top surface of the box 3 is made shine with light emitted from a light source means 9 on the inside. The control means 10 controls lighting, lights out, flashing, and lighting brightness. Operability and visibility of an operational state of an apparatus in a dark room at night for example are enhanced.
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