LIGHT GUIDE UNIT, ILLUMINATING DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE

摘要

In a light guide unit (40), light sources (22) are arranged on a first end section (24d) of a light guide body (24), and on a second end section (24e), which faces the first end section (24d) where the light sources (22) of the light guide body (24) are arranged, a side surface reflection member (26b) which can reflect light in the light guide body (24) is arranged. The thicknesses (D2, D4, D5) of the light guide body (24) are continuously increased toward the center of the light guide body (24) from the first end section (24d) where the light sources (22) are arranged. The thicknesses are also continuously increased toward the center of the light guide body (24) from the second end section (24e) where the side surface reflection member (26b) is arranged.