| 摘要 |
A surface light-emitting device includes a transparent plate having two main surfaces and a light source. The light source is arranged adjacent to a side of the transparent plate so that the light source radiates light to the inside of the transparent plate from the side of the transparent plate. One main surface of the transparent plate is formed with a plurality of cone-shaped dimples, which reflect radiated light toward the other main surface of the transparent plate. The surface light-emitting device may further include a black sheet arranged adjacent to one main surface of the transparent plate formed with the plurality of cone-shaped dimples. The surface light-emitting device can be used as a guide device for an input/output interface unit of an automated transaction apparatus.
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