A new trend watertight fittings that admits air for overhead type air conditioning unit

The utility model discloses a new trend watertight fittings that admits air for overhead type air conditioning unit belongs to a rail transit car air conditioning equipment technical field, including the fresh air valve in the waterproof cavity who sets up top new trend air inlet, the evaporation chamber that is located waterproof cavity one side and intercommunication waterproof cavity and evaporation chamber, the key lies in: below at top new trend air inlet is equipped with rainwater collecting groove, rainwater collecting groove communicates with each other with the help of the wash port of drainage post bottom waterproof cavity. The utility model discloses an useful technological effect is: 1, rainwater that rainwater collecting groove collected is discharged through the wash port through the drainage post is direct, greatly reduced the rainwater probability that gets into vehicle passenger district, 2, whole device simple structure, compactness can not influence the air inlet that evaporates the chamber