Vehicular internal ventilating device

Claim 1

A vehicular internal ventilation device for a vehicle having a passenger compartment and a luggage compartment and a back wall between said passenger compartment and said luggage compartment, seats against said back wall and a windshield, the ventilation device comprising: an air inlet device, an air exhaust device, and a power supply device; the air inlet device being installed on the front top end portion of the passenger compartment just above the windshield, the air inlet device including external wind tubes, internal wind tubes, wind tube seats for each of the tubes, a push door strip, and air filters; the external wind tubes being located externally to the passenger compartment and being connected to their respective wind tube seats; each external wind tube being formed into an arched conical shape with a slant cut air inlet port; the internal wind tubes being located inside the passenger compartment and being also connected to their respective wind tube seats; the internal wind tubes being also formed into an arched conical shape with their outlet ports facing upwardly to the top front end ceiling just above the windshield of the passenger compartment; the wind tube seat arranged to hold pairs of external and internal wind tubes, the push door strip being installed in the wind tube seat; door openings provided on the push door strip, one door opening for each tube seat; the door openings being provided with air filters; the push door strip being so arranged that when it is switched with its openings in alignment with a pair of external and internal wind tubes, the fresh air will come into the passenger compartment of the vehicle, and when the push door strip is switched with its door openings out of alignment with this pair of external and internal wind tubes, the fresh air inlet passages are closed preventing fresh air from coming into the passenger compartment of the vehicle; the air exhaust device being installed under the back seats on the wall which separates the passenger compartment and luggage compartment; the air exhaust device comprising a DC motor, a fan blade, and a frame; the back wall having an opening, the frame being mounted at the opening of the back wall, the central portion of the frame carrying the DC motor which is connected for driving the fan blade.