Lighting device, display device and television receiver

摘要

A backlight unit 12 includes LED units 17, a light guide plate 18 and a follow-up mechanism. The light guide plate 18 has light entrance surfaces 18b and a light exit surface 18a. The light entrance surfaces 18b are provided so as to face the respective LED units 17. The light exit surface 18a is provided parallel to an arrangement direction in which the LED units 17 and the light entrance surface 18b are arranged (i.e., the Y-axis direction) and such that light exits therethrough. The follow-up mechanism is configured to move the LED unit 17U in the arrangement direction in response to a deformation of the light guide plate 18. The follow-up mechanism includes a support member 20 that supports the LED unit 17U. The support member is in contact with a surface of the light guide plate 18 along the light entrance surface 18bU.

主权项

1. A lighting device, comprising:
at least one light source; a light guide member including a light entrance surface facing the light source and a light exit surface along an arrangement direction in which the light source and the light entrance surface are arranged; and a follow-up mechanism configured to move the light source in the arrangement direction in response to a deformation of the light guide member; wherein: the follow-up mechanism includes a support member supporting the light source and being in contact with a surface of the light guide member along the light entrance surface; the lighting device further comprises:
a chassis housing the light source and the light guide member; anda guide mechanism including a portion provided in the chassis and a portion provided in the support member, and configured to guide a movement of the support member relative to the chassis; the guide mechanism includes a first mating portion provided in the support member and a second mating portion provided in the chassis so as to mate with the first mating portion and to have a clearance relative to the first mating portion in the arrangement direction; the chassis includes a bottom plate arranged on a side opposite from the light exit surface with respect to the light guide member and a side plate rising from an outer edge of the bottom plate; and the second mating portion is provided in the side plate.