| 摘要 |
PROBLEM TO BE SOLVED: To provide an emblem light-emitting device which achieves light emission with even intensity and reduced colour unevenness by efficiently using light from an LED, and achieves reduced thickness and improvement of heat radiation property.SOLUTION: An emblem light-emitting device 1 comprises an emblem 10, a light guide plate 2 and an LED 5. The light guide plate 2 is composed of a first light guide member 2A opposing the LED 5 and a second light guide member 2B opposing the emblem 10. A primary refractive surface 2b and a secondary refractive surface 2c which are convex-shaped are respectively formed on an incident part and an emission part which are formed on an optical axis of the LED 5 of the first light guide member 2A. Light incident to the first light guide member 2A from the LED 5 is refracted by the primary refractive surface 2b and the secondary refractive surface 2c to form light parallel to the optical axis of the LED 5. A reflection surface 3b is formed on a salient 3A provided projecting on a rear surface of a reflector 3, for reflecting parallel light emitted from the secondary refractive surface 2c of the first light guide member 2A in a direction orthogonal to the optical axis of the LED 5 and making the light incident into the second light guide member 2B. |
