It can improve the efficiency of the [problem] photosynthesis, to provide intermittent light irradiation apparatus for the cultivated plant to irradiate the intermittent light of the homogeneous. Set the A fan-shaped lighting bulb of the shade for light bulbs installed, lit, making the irradiated surface of the fan-shaped to the earths surface, is rotated in a horizontal plane the shade for the light bulb installed in a motor and Yukari to be, is irradiated with intermittent light to the circular of the irradiated surface to the center point of the isosceles apex of the irradiated surface of the fan-shaped. And intermittent operation and attached a timer flicker function, the intermittent light to cultivated plants, along with the to be periodically repeated within a certain time irradiation, the ratio of the operation in one cycle of intermittent operation (irradiation) time and stop (irradiation stop) the arbitrarily changed, it is preferable to control the amount of light to be irradiated within a fixed time.FIELD 6【課題】光合成の効率を向上できる、均質の間欠光を照射する栽培植物用の間欠光照射装置を提供する。【解決手段】扇型の照明電球を電球設置用笠にセットし、点灯して、地表面へ扇型の照射面を作り、電球設置用笠をモーターで水平な面で回転させることに由って、扇型の照射面の2等辺の頂点を中心点とする円形の照射面へ間欠光を照射する。フリッカー機能のタイマーを付設して間欠運転し、間欠光を栽培植物へ、周期的に一定時間内で繰り返し照射させると共に、間欠運転の1周期における運転(照射)時間と停止(照射停止)の比率を任意に変更して、一定時間内に照射する光の量を制御するのが好ましい。【選択図】図6
