Recreational vehicle vent top cover still capable of ventilation in closed state of top cover

1. A vehicle vent top cover still capable of ventilation in a closed state of the top cover, characterized by comprising a top cover body and an air duct structural frame, wherein the top cover body comprises a top plate; fixed rims and side protection plates are arranged below the top plate; the fixed rims are located at inner sides of the side protection plates; and the fixed rims are provided with a first ventilation groove respectively; and the air duct structural frame is fixed below the top plate; the air duct structural frame is located above the bottom walls of the side protection plates; the first ventilation groove and an upper surface of the air duct structural frame form an air inlet; one side of the air duct structural frame close to the side protection plate is provided with a second ventilation groove; and the second ventilation groove and the side wall of the side protection plate form an air outlet.

2. The vehicle vent top cover still capable of ventilation in the closed state of the top cover according to claim 1 , characterized in that a screw-fixing bore log is arranged below the top plate, the air duct structural frame is provided with a screw hole, and the air duct structural frame is fixed by screws and the screw-fixing bore logs on the top plate.

3. The vehicle vent top cover still capable of ventilation in the closed state of the top cover according to claim 1 , characterized in that the air duct structural frame comprises a panel with a hollow window, the panel is located above the bottom walls of the side protection plates, a circle of connecting rim is integrally formed on the panel along the outer edge of the hollow window, the connecting rim is perpendicular to the panel, the fixed rim corresponds to the connecting rim, the second ventilation groove is arranged at the edge of the panel, and the second ventilation grooves and the first ventilation grooves are staggered to each other.

4. The vehicle vent top cover still capable of ventilation m the closed state of the top cover according to claim 1 , characterized in that at least one side wall of a panel is provided with the second ventilation groove.

5. The vehicle vent top cover still capable of ventilation in the closed state of the top cover according to claim 1 , characterized in that two opposite side walls of a panel are provided with the second ventilation groove respectively.

6. The vehicle vent top cover still capable of ventilation in the closed state of the top cover according to claim 1 , characterized in that three side walls of a panel are provided with the second ventilation groove respectively.

7. The vehicle vent top cover still capable of ventilation in the closed state of the top cover according to claim 1 , characterized in that four side walls of a panel are provided with the second ventilation groove respectively.

8. The vehicle vent top cover still capable of ventilation in the closed state of the top cover according to claim 1 , characterized in that an upper surface of the top plate is a plane structure or an arc structure.

9. The vehicle vent top cover still capable of ventilation in the closed state of the top cover according to claim 1 , characterized in that the side protection plate is perpendicular to the top plate.

10. The vehicle vent top cover still capable of ventilation in the closed state of the top cover according to claim 1 , characterized in that an inner side of the top plate is provided with a sliding strip connected with a metal push rod with a gear, and the sliding strip is fixed on a fixed buckle at the inner side of the top plate.