| 摘要 |
PURPOSE:To improve operability, by constituting a composite type heating device such that two types of information on a time and temperature are displayed in different colors on the same multicolor fluorescent display tube. CONSTITUTION:When a positive voltage is supplied to a multicolor fluorescent display tube 7-2 from O7 and R4 connected to a grid 3-a, an oven emits a red light. When a positive voltage is supplied from R3, a yeast 130 emits a red light. When a positive voltage is similarily fed from R2, R1, and R0, their respective display parts emit a red light. By lighting such lighting displays in order at a high speed, open display and temperature scale display meet operator's eyes such that they seem to be all lighted. In this case, a temperature display segment is controlled by R7-R10 and R3-R0. In this constitution, temperature display and time display are displayed in different colors on a display tube 7-2, and this enables to facilitate watching of display and permits improvement of operability. |
