Patent ID: 8237889

Claim:
A backlight device used in a liquid crystal display device, wherein in a housing of the backlight device, a reflector insertion opening is formed through which a reflector that houses a light source is put in and taken out, in a direction in which the reflector is inserted into the reflector insertion opening, a height of an outer perimeter of a front-end part of the reflector is smaller than a height of an inner perimeter of the reflector insertion opening, and a height of an outer perimeter of a rear-end part of the reflector is substantially equal to the height of the inner perimeter of the reflector insertion opening, the reflector has a top plate, a side plate, and a bottom plate connected together so as to have a substantially square-cornered C sectional shape, the top plate, the side plate, and the bottom plate being substantially rectangular, and the top plate is inclined in the direction in which the reflector is inserted with respect to the bottom plate.