ILLUMINATION DEVICE, DISPLAY DEVICE AND TV RECEIVER

摘要

Provided is a backlight device that includes: LEDs; a LED substrate; a light guide plate having a light-exiting surface, an opposite surface on an opposite side of the light-exiting surface, and a light-receiving face; a chassis; a frame; a heat dissipating member having a bottom part and a raised part; a pair of fixing members, each having a gripping part that extends along a long-side direction of the raised part and that grips each end in the long-side direction of the raised part in a direction perpendicular to a plate surface of the raised part, and a locking part that extends along the long-side direction of the raised part and that is locked to each of side faces adjacent to the light-receiving face of the light guide plate on a side of the light-receiving face. The pair of fixing members keeps a distance between the LED substrate and the light guide plate constant by fixing a distance between the gripping part and the locking part.

主权项

1. An illumination device, comprising:
a light source; a light source substrate having a rectangular plate shape, said light source being disposed on one surface of the light source substrate; a light guide plate that guides light from said light source and that has a light-exiting surface, an opposite surface that is opposite to said light-exiting surface, and at least one rectangular light-receiving side face facing said light source and having a long-side direction parallel to a long-side direction of the light source substrate; a chassis having at least a bottom plate that is disposed on a side of the opposite surface of said light guide plate; a frame on a side of said light-exiting surface of the light guide plate and housing at least said light source and said light guide plate between said frame and said chassis; a heat dissipating member having heat dissipating characteristics and comprising a bottom part that has a plate shape parallel to the bottom plate of said chassis and that is disposed on said bottom plate, and a raised part that rises from said bottom part in a rectangular plate-like shape so as to attach thereon the light source substrate such that a long-side direction of said raised part and the long-side direction of said light source substrate are parallel to each other, and such that a length along the long-side direction of said raised part is greater than a length along a long-side direction of said light source substrate; and a pair of fixing members at respective sides in the long-side direction of said light source substrate, each of the fixing members comprising a gripping part and a locking part, said gripping part extending along the long-side direction of said raised part and gripping each end in the long-side direction of said raised part along a direction orthogonal to a surface of said raised part, and said locking part extending along the long-side direction of said raised part and locking each side face of the light guide plate abutting the light-receiving side face thereof, said pair of fixing members thereby maintaining a gap between said light source substrate and said light guide plate.