PROBLEM TO BE SOLVED: To provide a lighting device which enables an efficient growth of plants.SOLUTION: The lighting device, which supplies lights necessary for growing plants, includes: a first fluorescent part, having semiconductor light-emitting elements each having an emission region in a near-ultraviolet region or an ultraviolet region and a red fluorescent material excited by light emission from the semiconductor light-emitting elements to fluoresce red light, and radiating at least the red light from the red fluorescent material to the outer part a second fluorescent part having semiconductor light-emitting elements each having an emission region in a near-ultraviolet region or an ultraviolet region, and a blue fluorescent material excited by light emission from the semiconductor light-emitting elements to fluoresce blue light, and radiating at least the blue light from the blue fluorescent material to the outer part and an electric power supply part for supplying electric power to each of the semiconductor light-emitting elements which the first fluorescent part has and the semiconductor light-emitting elements which the second fluorescent part has. The red light emitted from the first fluorescent part and the blue light emitted from the second fluorescent part are synthesized to make the synthesized light illuminate the plants.COPYRIGHT: (C)2013,JPO&INPIT【課題】効率的な植物の育成を可能とする照明装置を提供する。【解決手段】植物の育成に必要な光を供給する照明装置であって、近紫外領域又は紫外領域に発光領域を有する半導体発光素子と、該半導体発光素子からの発光で励起し赤色光を蛍光する赤色蛍光体とを有し、外部に対して少なくとも該赤色蛍光体からの赤色光を出射する第一蛍光発光部と、近紫外領域又は紫外領域に発光領域を有する半導体発光素子と、該半導体発光素子からの発光で励起し青色光を蛍光する青色蛍光体とを有し、外部に対して少なくとも該青色蛍光体からの青色光を出射する第二蛍光発光部と、第一蛍光発光部が有する半導体発光素子と、第二蛍光発光部が有する半導体発光素子のそれぞれに電力を供給する電力供給部と、を備える。そして、第一蛍光発光部から出射される赤色光と第二蛍光発光部から出射される青色光が合成され、該合成光が植物に照射される。【選択図】図8A
