OPERATION DEVICE, HEAT-COOKING APPARATUS USING THE SAME AND OPERATION METHOD

摘要

To present an operating apparatus having features including ease of operation, controllability for preventing misoperation, small size, long life, and ease of assembling. The constitution comprises a base unit as skeleton of operation unit, a key operation unit 13 having plural switches disposed at the front side of the base unit, a first design sheet 12 disposed at the front side of the key operation unit 13, printing patterns at positions corresponding to each switch, a display device 11 disposed at the front side of the first design sheet 12, having light function elements 11g for transmitting and shielding the positions corresponding to the patterns on the first design sheet 12, and a second design sheet 10 disposed at the front side of the display device 11, having windows 10b at positions corresponding to the light function elements. By manipulating a desired window, the light function element is set in light transmission state, and the pattern printed on the first design sheet is displayed in the window. <IMAGE>