| 摘要 |
PROBLEM TO BE SOLVED: To suppress luminance unevenness of emission light of a lighting system utilizing reflected light by a directivity reflection part and direct light from a light source.SOLUTION: The backlight device (lighting system) 12 includes an LED (light source) 17 and a directivity reflection part 22 which is provided at least at a part of the surrounding of the LED 17 and has a light reflecting surface 22a inclined to make an angle against the mounting surface 18c being an installation surface of the LED 17, and of which the light reflecting surface 22a directs to the opposite side to the LED 17 side. Light returned to the surrounding of the LED 17 is reflected to the opposite side to the LED 17 side, while making an angle according to the angles in which the light reflecting surface 22a is inclined against the mounting surface 18c being the installation surface of the LED 17 by the light reflecting surface 22a which the directivity reflection part 22 provided at least at a part of the surrounding of the LED 17 has, and is utilized as emission light of the backlight device 12. |
