| 摘要 |
A backlight unit 12 includes a plurality of light source units 16. Each of the light source units 16 includes an LED 20, a light guide plate 22, a first reflecting member 28 and a guidance reflecting member 31. The light guide plate 22 includes a light guide portion 23 and a light exit portion 24. The light guide portion 23 faces the LED 20 and has a light entrance surface 26 which light enters. The light exit portion 24 has a light exit surface 27 that is parallel to an arrangement direction of the LED and the light entrance surface 26 and through which light exits. The light exit portion 24 overlaps the light guide portion 23 in a direction perpendicular to the light exit surface 27 and provided on relatively a light exit side from the light guide portion 23 and formed optically continuous from the light guide portion 23. The first reflecting member 28 is provided between the light guide portion 23 and the light exit portion 24 and configured to reflect light. The guidance reflecting member 31 reflects light from the light guide portion 23 to guide the light to the light exit portion 24. The light source units 16 are arranged in series in at least one direction along the light exit surface 27. |
