PROBLEM TO BE SOLVED: To provide a plant cultivation device that can irradiate leaf surfaces of plants with appropriate light volume.SOLUTION: A plant cultivation device comprises: a planting part 4 into which plants 1 are planted； a light irradiation part 3 which irradiates the planting part 4 with light from a first direction； and an intensity setting part 31 which increases a preset value of the irradiation intensity of the light irradiation part 3 as exposure rate, in which the planting part 4 is not covered by the plants 1 but exposed in the case of seeing from the first direction, becomes smaller.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2020,JPO&INPIT【課題】植物の葉面に適切な光量を照射できるようにした植物栽培装置を提供する。【解決手段】植物１が植え込まれる植込部４と、植込部４へ第一方向から光を照射する光照射部３と、前記第一方向から視た場合において植込部４が植物１に覆われずに露出する露出率が低くなるほど、光照射部３の照射強度の設定値を高くする強度設定部３１と、を備える。【選択図】図１
