| 摘要 |
PURPOSE:To confirm the setting state of temperature easily and visually by using a heater which emits visible light and a heater which emits no visible light in combination for temperature adjustment. CONSTITUTION:Desired temperature is set by a temperature setting circuit 8 and inputted to an ON/OFF control circuit 10 and a phase control circuit 11. The control circuit 10 turns on and off a heater 6 in accordance with the output of a temperature detecting circuit 9. The phase control circuit 11 controls an angle of current flow corresponding to the set temperature to control a light source 7 which emits visible light. The light source 7 emits constant light by being supplied with invariably constant electric power in accordance with the set temperature. Consequently, the temperature setting condition is recognized visually and this suits to an anchor, etc. |
