Lighting device, display device and television device

摘要

A backlight device includes a light guide plate, a first light source, a second light source, and a positioning portion. The light guide plate has at least one end surface as a light entrance surface and one plate surface as a light exit surface. The first light source is opposed to a first light entrance surface that is a first end surface of the light guide plate. The second light source is opposed to a second light entrance surface that is an end surface opposite from the first light entrance surface of the light guide plate. The second light source is arranged to have a distance from the second light entrance surface relatively greater than a distance between the first light source and the first light entrance surface. The positioning portion is configured to position the light guide plate in a direction in which the first light source, the light guide plate, and the second light source are arranged, and to position the light guide plate with respect to the first light source and the second light source. The positioning portion is arranged to have a distance from the second light entrance surface relatively greater than a distance from the first light entrance surface.

主权项

1. A lighting device comprising:
a light guide plate having at least one end surface as a light entrance surface and one plate surface as a light exit surface; a first light source opposed to a first light entrance surface that is a first end surface of the light guide plate; a second light source opposed to a second light entrance surface that is an end surface opposite from the first light entrance surface of the light guide plate, the second light source being away from the second light entrance surface with a distance relatively greater than a distance between the first light source and the first light entrance surface; a positioning portion configured to position the light guide plate in a direction in which the first light source, the light guide plate, and the second light source are arranged, and to position the light guide plate with respect to the first light source and the second light source, the positioning portion being arranged to be away from the second light entrance surface with a distance relatively greater than a distance between the positioning portion and the first light entrance surface; and a chassis where the first light source, the light guide plate, and the second light source are arranged, the chassis including the positioning portion that is fitted to a part of the light guide plate with concavo-convex fitting.