Infection preventing device

An infection preventing device that is mounted, for suppressing infection among a plurality of passengers, on a vehicle comprising a plurality of seats for the plurality of passengers, the plurality of seats being aligned in a front-rear direction and a left-right direction as viewed when seated in the seats, the infection preventing device comprising:

• air barrier forming units that comprise an air inlet for taking in air from the rear in the front-rear direction, an air purification mechanism for creating clean air by purifying the air taken in from the air inlet, and an air outlet for blowing the clean air toward the front in the front-rear direction, and are capable of blowing out the clean air from the air outlet in the form of layer perpendicular to the left-right direction,
• wherein the air barrier forming unit is provided at each of side ends of seat backs of the plurality of seats, the air barrier forming units provided on the seats adjacent in the front-rear direction face in the front-rear direction, and it is configured that air including clean air blown out of the air outlet of the rear air barrier forming unit can be taken in by the air inlet of the front air barrier forming unit.