Patent ID: 8414177

Claim:
A planar light emitting device comprising: a light guide plate having an upper surface and a lower surface facing each other; a reflective sheet placed on a lower surface of said light guide plate; a point light source having at least one light emitting element and provided so that light from the light emitting element enters into a side end surface of said light guide plate; a light source substrate mounted with said point light source and placed in parallel with the side end surface of said light guide plate; a first chassis that covers at least a back surface of said light source substrate and a lower surface of said light guide plate in parallel; a second chassis having an emission opening for planar emission placed in the upper surface of said light guide plate and mating with said first chassis; a light source substrate take-out portion provided in a side surface of said planar light emitting device for taking out said light source substrate along the side end surface of said light guide plate; and a fixing member provided on the side surface of said planar light emitting device and having an inclined portion inclined with respect to a longitudinal direction of the side end surface of said light guide plate, wherein the inclined portion of said fixing member is formed so that when said fixing member is pressed inside from outside said planar light emitting device, said light guide plate moves closer to said light source substrate, and said light source substrate is held and fixed between the side end surface of the light guide plate and the first chassis; and so that when the fixing member is removed from the side surface of said planar light emitting device, a gap is created between said light source substrate and the side end surface of said light guide plate or said first chassis, and said light source substrate can be taken out of said light source substrate take-out portion.