Abstract: [Purpose] To provide a surface illumination fixture using a point light source having strong directivity. [Constitution] In the surface illumination fixture 3 including a surface illumination light-source device 6 converting light from a plurality of point light sources 36 having strong directivity into surface illumination and an illumination fixture main body 41, the surface illumination light-source device 6 includes a casing 30 having a flat plate part 35 being used to attach the surface illumination light-source device to the illumination fixture main body, lateral plate parts standing from the flat plate part, and an opening on a surface opposite to the flat plate part, and includes a light-guide reflection plate covering the opening. The flat plate part 35, the lateral plate parts 32 and 33, and the light-guide reflection plate 40 are formed by members having a high light reflectance and a low light transmittance.

Abstract: To provide a planar light source device that can provide large-area, uniform, and high-quality planar illumination light. A planar light source device includes a main body case 4 that surrounds the periphery of a gap between a pair of optical reflection plates disposed to face each other with side plates, and a plurality of point light sources 2 arranged at predetermined intervals on at least one side plate of the main body case. The planar light source device allows light from the point light sources 2 to be transmitted through at least one of the pair of optical reflection plates 5 and emitted to the outside.

Abstract: To provide a planar light source device that can provide large-area, uniform, and high-quality planar illumination light. A planar light source device includes a main body case 4 that surrounds the periphery of a gap between a pair of optical reflection plates disposed to face each other with side plates, and a plurality of point light sources 2 arranged at predetermined intervals on at least one side plate of the main body case. The planar light source device allows light from the point light sources 2 to be transmitted through at least one of the pair of optical reflection plates 5 and emitted to the outside.

Abstract: [Purpose] To provide a surface illumination fixture using a point light source having strong directivity. [Constitution] In the surface illumination fixture 3 including a surface illumination light-source device 6 converting light from a plurality of point light sources 36 having strong directivity into surface illumination and an illumination fixture main body 41, the surface illumination light-source device 6 includes a casing 30 having a flat plate part 35 being used to attach the surface illumination light-source device to the illumination fixture main body, lateral plate parts standing from the flat plate part, and an opening on a surface opposite to the flat plate part, and includes a light-guide reflection plate covering the opening. The flat plate part 35, the lateral plate parts 32 and 33, and the light-guide reflection plate 40 are formed by members having a high light reflectance and a low light transmittance.