Cooling and ventilating system for sunlight greenhouse

The utility model relates to the technical field of greenhouse equipment, and discloses a sunlight greenhouse cooling and ventilating system which comprises a main supporting column fixedly arranged at the top of each base, and a cross-shaped connecting base fixedly arranged at the top of each main supporting column. And main connecting beams are fixedly arranged among the cross-shaped connecting seats at the tops of the five main supporting columns on the same side. According to the greenhouse ventilation device, the two ventilation fans are arranged at the bottoms of the two sides of the greenhouse, when air in the greenhouse needs to be cooled and ventilated, only the ventilation fans on the two sides need to be turned on, the ventilation fans on the two sides work in a matched mode, and then turbid air in the greenhouse can be rapidly replaced; therefore, the work of cooling and ventilating the air environment in the greenhouse is achieved. 本实用新型涉及温室大棚设备技术领域，公开了日光温室降温通风系统，包括每个所述底座的顶部均固定设置有主支撑柱，每个所述主支撑柱的顶部