LIGHTING DEVICE, DISPLAY DEVICE AND TELEVISION DEVICE

摘要

A lighting device 24 includes a light guide plate 20, LEDs 28, an LED board 30, a chassis 22, a heat dissipation member 36, and a restriction member 40. The light guide plate 20 includes a light entrance surface 20a and a light exit surface 20b. The heat dissipation member 36 has a heat dissipation property and includes a bottom portion 36a and a stand-up portion 36b. The bottom portion 36a has a plate-like shape arranged on the bottom plate 22a so as to be parallel to the bottom plate 22a. The LED board 30 is mounted to a plate surface of the stand-up portion 36b such that a longitudinal direction thereof and a longitudinal direction of the stand-up portion 36b are parallel to each other and a dimension of the stand-up portion 36b in the longitudinal direction is larger than a dimension of the LED board 30 in the longitudinal direction. The restriction member 40 has elasticity. The restriction member 40 is arranged in space other than space between the LEDs 28 and the light entrance surface 20a, configured to be in contact with the plate surface of the stand-up portion 36b on which the LED board 30 is mounted and the light entrance surface 20a to maintain a distance between the each LED 28 and the light guide plate 20. The restriction member 40 includes a portion that is in contact with a side surface of the LED board 30 on a short-edge side.

主权项

1. A lighting device comprising:
a light guide plate including at least one side surface configured as a light entrance surface and a plate surface configured as a light exit surface; a light source arranged such that a light emitting side thereof is opposite the light entrance surface; a light source board having a rectangular shape and arranged such that a plate surface thereof faces the light entrance surface with a longitudinal direction thereof parallel to a plate surface direction of the light guide plate, wherein the light source is disposed on the plate surface thereof; a chassis including at least a bottom plate arranged opposite from the light exit surface of the light guide plate and holding at least the light guide plate, the light source, and the light source board therein; a heat dissipation member having a heat dissipation property and including a bottom portion and a stand-up portion, the bottom portion having a plate-like shape arranged on the bottom plate so as to be parallel to the bottom plate, the stand-up portion having a rectangular plate-like shape, projecting from a portion of the bottom portion toward the light exit surface, wherein the light source board is mounted to a plate surface of the stand-up portion such that a longitudinal direction thereof and a longitudinal direction of the stand-up portion are parallel to each other and a dimension of the stand-up portion in the longitudinal direction is larger than a dimension of the light source board in the longitudinal direction; and a restriction member having elasticity, arranged in space other than space between the light source and the light entrance surface, configured to be in contact with the plate surface of the stand-up portion on which the light source board is mounted and the light entrance surface to maintain a distance between the light source and the light guide plate, and having a portion that is in contact with a side surface of the light source board on a short-edge side.