Patent ID: 7407307

Claim:
An illuminating panel comprising: a module panel; and a plurality of linear light source units disposed thereon, each of the linear light source units comprising: a light emitter having a base and a plurality of light emitting diodes linearly installed on the base; a first reflector formed of parabolic surfaces that are provided for each of the light emitting diodes on a light emergence side, each of the parabolic surfaces having a focal position being set at a light emitting face of the respective light emitting diodes; and a second reflector having a pair of flat plate-like reflecting surfaces being arranged with the light emitting diodes sandwiched therebetween, the second reflector being disposed farther to the light emergence side than the first reflector and parallel to an array direction of the light emitting diodes, and the second reflector reflecting light from the light emitting diodes toward the light emergence side, wherein the linear light source units are annularly disposed on the module panel, and wherein said second reflector comprises a first end adjacent to said first reflector and a second end opposite to said first end, said flat plate-like reflecting surfaces extending from said first end to said second end.