| 摘要 |
PROBLEM TO BE SOLVED: To improve uniformity in an irradiation object region while using a light source having directivity in light distribution characteristics.SOLUTION: A lamp socket 44 is attached on an inside surface of a side wall 201 of each reflection plate 20. Also, a feeder line 45 is led out at each lamp socket 44, and a plug connector 46 provided at the tip of each feeder line 45 is connected to a receptacle connector 41 of a lighting device 4. That is, when base parts 19 on both ends of an LED unit 1B are mounted on the pair of lamp sockets 44 separately, the LED unit 1B is arranged inside each reflection plate 20 respectively. Also, a DC current is supplied to the LED unit 1B via each lamp socket 44 from the lighting device 4, and an LED 100 emits light. Here, each LED unit 1B is mounted on the lamp socket 44 in such a manner that a direction which overlaps with a focal point of a parabola when seen from an axial direction (left-and-right direction) and in which the light distribution characteristics becomes highest luminous intensity is faced toward a reflection surface 200. |
