The present invention relates to airtight equipment of an opening/closing window on a greenhouse roof, which is installed on both sides of the top part of opening/closing window on the roof positioned on both sides of the roof top of a greenhouse, blocks rainwater from flowing in to the inside of the greenhouse when raining, and the heat within the greenhouse from leaking out to outside, and facilitates to open/close in interlock with opening/closing of the opening/closing window on the roof when opening/closing the opening/closing window of the roof. The airtight equipment comprises a window frame pipe (110) having a film fixing part (111) formed on the upper part so as to combine and fix a film (F) on the opening/closing window (100) opening/closing the roof of a greenhouse a greenhouse pipe (120) installed along the longitudinal direction of the window frame pipe, and having a film fixing part (121) formed on the upper part so as to combine and fix the film (F) an internal cover (130) fixed to the greenhouse pipe in medium with a fixing member (150) in the state of being covered on the film fixing part of the greenhouse pipe, and having an extended part (131) facing the window frame pipe formed on one side, and an airtight maintenance member bonding unit (135), where an airtight maintenance member (136) is installed, formed on the end of the extended part to face up and an outer cover (140) fixed to the window frame pipe in medium with the fixing member (150) in the state of being covered on the film fixing part of the window frame pipe, and having an extended part (141) facing the greenhouse pipe formed on one side, and an airtight maintenance member bonding unit (145), where an airtight maintenance member (146) is installed, formed on the end of the extended part to face down.COPYRIGHT KIPO 2014본 발명은 온실지붕의 최상부 양측에 위치하는 천장개폐 창의 최상부 양측 설치되어 우천시 빗물이 온실 내부로 유입되는 것을 차단함은 물론, 온실 내부의 열기가 외부로 빠져나가는 것을 방지하고, 또 상기 천장개폐 창의 개폐시 그 천장개폐 창의 개폐와 함께 연동되어 용이하게 개폐되도록 한 온실지붕 개폐창의
