Patent ID: 6611304
Filing Date: 2003-08-26
Classification: F21V,G02B,G02F

Abstract:
A planar light source device comprising:a light guiding plate constituted in a shape of a plate, having a light irradiating face for irradiating light at one main face thereof and having at least one side edge in a linear shape at a peripheral edge thereof; a linear light source arranged along the side edge of the light guiding plate; a lamp reflector arranged along the side edge of the light guiding plate to cover the linear light source for reflecting light emitted from the linear light source to inside of the light guiding plate; lamp holders each arranged at inside of an end portion of the lamp reflector for holding the linear light source; and a reflection sheet provided at other main face of the light guiding plate opposed to the light irradiating face; wherein the reflection sheet includes a projected portion projected from the side edge of the light guiding plate to inside of the lamp reflector and end portions of the projected portion are provided with notch portions for avoiding interference between the reflection sheet and the lamp holders.