| 摘要 |
PURPOSE:To improve the usage convenience by an arrangement in which a selection input means which is transparent to allow reading the display is provided in such a manner that it overlaps an analog display section for heating time and heating temperature etc. CONSTITUTION:A transparent switch 29 is disposed on the front of an analog value display section 7 comprising liquid crystal 26 and a display panel 274 in such a manner that they are overlapped with an intervening transparent plate 28. The transparent switch 29 is so constructed that a wiring of indium oxide or gold is made on a sheet in a required pattern. By this constitution, a direct input on the display location of heating time and heating temperature etc. can be conducted, and so, the convenience in use is improved.
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