PROBLEM TO BE SOLVED: To suppress decline of the efficiency of irradiation with solar light when plants are cultivated with both artificial light and solar light.SOLUTION: A cultivation unit 3 includes: a frame body 10 whose top is open artificial light irradiation parts 20 for applying artificial light to cultivation plants stored in the frame body 10 from the upper side of the frame body 10 and support parts 30 for supporting the artificial light irradiation parts 20 to the frame body 10. The artificial light irradiation parts 20 include a first irradiation body 21, a second irradiation body 22 and a third irradiation body 23 each of which has a plate-shaped radiation plate and a light emission part. The artificial light irradiation parts are supported in the frame body 10 by the support parts 30 in such a way that solar light can pass through the first irradiation body 21 to the third irradiation body 23. The inclination of the first irradiation body 21 to the third irradiation body 23 can be adjusted according to the altitude of the sun.COPYRIGHT: (C)2012,JPO&INPIT【課題】人工光と太陽光とを併用して植物を栽培する場合に、太陽光の照射効率が低下するのを抑制する。【解決手段】栽培ユニット3は、上部側が開口する枠体10と、枠体10の上部側から枠体10に収容される栽培植物に人工光を照射する人工光照射部20と、人工光照射部20を枠体10に支持させる支持部30とを備える。人工光照射部20は、それぞれが板状の放熱板と発光部とを有する第1照射体21、第2照射体22、および第3照射体23を備えており、これら第1照射体21~第3照射体23の間を太陽光が通過できるように、支持部30にて枠体10に支持させる。また、第1照射体21~第3照射体23の傾斜を、太陽の高度に応じて調整可能とする。【選択図】図2
