| 摘要 |
PROBLEM TO BE SOLVED: To simplify the structure of an operation button section, and reduce the amount of pressing operation of the operation button, and improve operation property of the operation button. SOLUTION: A mark section 9 is disposed on the side of the back of an operation button 3 for operating a switch 2 connected to a control section for controlling cooking temperature. The operation button 3 possesses optical transmittance capable of optically transmitting the mark section 9, and holds one side of the operation button 3 on a holder relatively movably with the other side of the same being provided oppositely to the foregoing switch 2. Hereby, the need of a lamp and a graphic sheet is eliminated to simplify the structure and reduce the amount of pushing operation of the operation button 3.
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