This creation system is the improvement (three) of a greenhouse structure, refer in particular to the skylight structure that one kind sets up what greenhouse roof, wind direction can be detected by Weather wind way ball, make round-trip switching with the transmission of control device adjustment rack gear, make the skylight structure for setting what greenhouse roof can the change of box haul make the actuation of opening angle size, for convenience of controlling temperature and adjusting the purpose of air-flow.本創作係為一溫室結構之改良(三)，特指一種搭設於溫室屋頂之天窗結構，可藉由氣象風向球偵測風向，以控制裝置調整齒條之傳動作往返切換，使置於溫室屋頂之天窗結構可隨風向的改變作開啟角度大小之作動，為方便控制溫度及調節氣流之目的。
