PROBLEM TO BE SOLVED: To lower temperature in a chamber.SOLUTION: A plant cultivation chamber for cultivating plants has: an opening which makes air pass into/out from a chamber in which the plants are placed; a first blocking part which blocks inflowing air flowing from the opening and outflowing air flowing out from the opening; a shielding object which at least shields sunlight irradiating the plants; a gap part through which the air passes in between a sidewall which the plant cultivation chamber has; a nozzle part which emits moisture into the chamber; and either a first fan which absorbs the inflow air from the opening or a second fan which discharges the outflowing air from the opening and a third fan which sends air passing through the gap part toward the nozzle part.SELECTED DRAWING: Figure 1【課題】室内の温度を下げることを目的とする。【解決手段】植物を栽培するための植物栽培室が、前記植物が置かれる室内に、空気を出入りさせる開口部と、前記開口部から流入する流入空気と、前記開口部から流出する流出空気とを遮蔽する第1遮蔽部と、前記植物に対して射し込む日光を少なくとも遮蔽する遮光物と、前記植物栽培室が有する側壁との間に前記空気が通る間隙部と、前記室内に水分を放出するノズル部と、前記流入空気を前記開口部から吸い込む第1ファン又は前記流出空気を前記開口部から排出させる第2ファンのいずれかと、前記ノズル部に向かって前記間隙部を通過した空気を送る第3ファンと有することで上記課題を解決する。【選択図】図1