| 摘要 |
A functional device has an operating button to control a function, a display window containing an indication of the function and a luminous device, containing a luminous material to illuminate the operating button and display window. The luminous device is formed from a one-piece continuous member containing luminous material. The material forming the luminous material is an aluminum oxide luminous material. A plurality of corresponding operating buttons and display windows may be formed in the functional device, with the luminous device formed of a plate to back light the plurality of display windows, luminous material formed in the plurality of operating buttons and connecting arms to connect plate to the operating buttons.
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