| 摘要 |
A surface lighting device includes a stick type light guide body. The stick type light guide body receives a light emitted from a light emitting surface of an LED fixed on a substrate from a side surface which faces to the LED and emits the received light from a side surface which faces to a light guide plate. The emitted light is incident from a side surface of the light guide plate and is emitted from an upper surface of the light guide plate. Then, the substrate is formed with a throughhole, and the stick light guide is formed with a protrude portion on the lower surface thereof. By fitting the protrude portion into the throughhole, the LED and the stick type light guide body are relatively positioned such that the light emitting surface of the LED and the side surface of the stick light guide are brought into close contact with each other.
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