Ventilation and cooling system applied to parking lot

The utility model provides a ventilation and cooling system applied to a parking lot. The system comprises a first exhaust pipe, a second exhaust pipe, a third exhaust pipe, a ventilation pipe, an arc funnel cap and a cooling device. One end of the first exhaust pipe, one end of the second exhaust pipe and one end of the third exhaust pipe are communicated with the wall of the ventilation pipe. The first exhaust pipe, the second exhaust pipe and the third exhaust pipe are arranged in the same horizontal plane. A number of vertical support rods are fixed on the top end of the ventilation pipe. The upper end of each support rod is connected with the inner side wall of the arc funnel cap with a downward opening and supports the arc funnel cap. The cooling device is provided with an air inlet pipe and an air outlet pipe. The air inlet pipe and the air outlet pipe are communicated through a radiating pipeline. The radiating pipeline is used for realizing heat exchange between cool air in the radiating pipeline and