| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface illuminating apparatus which can reduce the amount of light leakage from the gap between a light emitting face of an LED and a side face of a stick-type light guide body. SOLUTION: Light emitted from a light-emitting face of an LED 20a fixed to a substrate 18 enters the stick-type light guide body 16 via a side face on the LED 20a side and is emitted from a side face on a light guide plate 12 side. The emitted light enters the light guide plate 12 via a side face and is emitted from an upper face. The substrate 18 has a through hole 18e and the stick-type light guide body 16 has a protrusion 16g on a bottom face. By inserting the protrusion 16g into the through hole 18e, the relative position of LED 20a and the stick-type light guide body 16 is determined and a close contact between the light-emitting face of the LED 20a and the side face of the stick-type light guide body 16 can be achieved. |
