The subject innovation is related to a exhaust system of an automotive device used to vent the car interior air, in particular is attached to the vehicle ceiling according to Chun Jung-bae device of the vehicle equipment to be used in order to vent the car room air will be.; Object of the present invention is to be able to open and close the car Chun Jung-bae-based device, the temperature of the indoor air decreases, if that does not require ventilation is by doing so as not to prevent the ventilation apertures, in particular in winter the unwanted ventilation does not occur for now it would prevent.; In order to achieve the above objects; This is designed; Lower portion of the upper cover 7, the exhaust duct 5 is fixed while leaving a predetermined gap (6) on top of the exhaust duct 5, the air exhaust duct (5) formed through the car roof (4) but the installation across the hole, through the left and right movement to the upper surface of the through hole 8-2 while around the grill plate (8) forming a handle slot (8-3) to form a, the grill plate (8) installed free to but, as to form a through-hole (9-2) of the same arrangement as the grill plate (8) as well as the formation of the handle (9-3) so as to project a long hole (8-3) of the grill plate 8, the shielding plate makes available a device of the car Chun Jung-bae, characterized in that consisting of (9).
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