PROBLEM TO BE SOLVED: To provide a plant cultivation apparatus capable of optimizing photon flux density with which a plant is irradiated according to a type of a plant and a growth status of a plant.SOLUTION: A plant cultivation apparatus is equipped with: a mounting section 2 on which a cultivation tank planting a plant therein is mounted and an LED illumination device which is arranged above the mounting section 2 and uses only LED packages 12 which emit photon flux density required for the growth of the plant in the cultivation tank mounted on the mounting section 2. The plant cultivation apparatus has a square cultivation region 5 in a plan view above the mounting section 2 and at a height position between roots and leaves of the plant planted in the cultivation tank. Assuming that a length of both right/left sides 5a of the cultivation region 5 be L, 30% or more of LED packages 12 out of the total number of LED packages 12 in the LED illumination device are arranged above belt-like portions 7,9 formed between straight lines 6,8, which connect points PA,PB positioned at length portions of 0.3×L from both front/rear ends of both right/left sides 5a, and both front/rear sides 5b,5c.COPYRIGHT: (C)2014,JPO&INPIT【課題】植物の種類や植物の成育状況に応じて植物に照射する光量子束密度を最適化しうる植物栽培装置を提供する。【解決手段】植物栽培装置は、植物が植えられた栽培槽を載せる載置部2と、載置部2の上方に配置されかつ載置部2に載せられる栽培槽の植物の生育に必要な光量子束密度を発するLEDパッケージ12のみを使用したLED照明装置とを備えている。植物栽培装置は、載置部2の上方でかつ栽培槽に植えられた植物の根と葉との間の高さ位置に、平面から見て方形の栽培領域5を有する。栽培領域5の左右両側辺5aの長さをLとすると、左右両側辺5aの前後両端から0.3×Lの長さ部分に位置する点PA,PBどうしを結んだ直線6,8と、前後両側辺5b,5cとの間に形成される帯状部分7,9の上方に、それぞれLED照明装置の全LEDパッケージ12の30%以上の数のLEDパッケージ12を配置する。【選択図】図2
