PROBLEM TO BE SOLVED: To provide means for causing a sufficient increase in the temperature of air in a heat insulation chamber, such as a house type seedling facility, with low operating cost.SOLUTION: According to the present invention, there is provided a seedling facility 1 comprising a seedling chamber 2 partitioned by heat-insulating partition members 2a, 2b and housing a seedling device 5, a solar panel 13, a light-emitting diode 6, a light-condensing device 14, a heating medium-heating device 15 and a heat-exchanging device 22. The solar panel 13 supplies generated electric energy to the light-emitting diode 6. The light-emitting diode 6 irradiates seedlings housed in the seedling apparatus 5 with light. The light-condensing device 14 comprises a light collecting mirror 26 and a heat collecting pipe 27 disposed at a position where sunlight is condensed. The heat-insulating partition member 15 comprises a heating medium storage tank 16 and a heating medium circulation mechanism that supplies a heat medium in the heating medium storage tank 16 into a heat collection pipe 27 for making the heat medium circulate in the heat collection pipe and returning the heat medium to the heating medium storage tank. The heat-exchanging device 22 causes heat exchange between the heat medium and the air in the seedling chamber.SELECTED DRAWING: Figure 1【課題】低廉な運転費でハウス型育苗設備等の断熱室の空気の温度を十分に高めることを可能にする手段を提供する。【解決手段】育苗施設1は、断熱性の仕切部材2a、2bで仕切られ育苗装置5を収容する育苗室2と、太陽光発電パネル13と、発光ダイオード6と、集光装置14と、熱媒加熱装置15と、熱交換器22とを有する。太陽光発電パネル13は、生成した電気エネルギを発光ダイオード6に供給する。発光ダイオード6は、育苗装置5に収容された苗に光を照射する。集光装置14は、集光ミラー26と、太陽光が集光される位置に配置された集熱パイプ27とを有する。熱媒加熱装置15は、熱媒貯槽16と、熱媒貯槽内の熱媒を集熱パイプ27に供給して該集熱パイプ内を流通させ熱媒貯槽16に還流させる熱媒循環機構とを有する。熱交換器22は、熱媒と育苗室内の空気との間で熱交換を行わせる。【選択図】図1