PURPOSE: To prevent the dining room side from the inflow of a stink generated in the kitchen side for improving residential properties by forming a belt-shaped air ejecting port forming cutting-off air flow in a communicating opening of partitioning furniture on the bottom surface of the opening and providing an intake port disposed opposed to the air ejecting port in the upper section to suck the air flow.

CONSTITUTION: Partitioning furniture 5 defines two rooms of a kitchen 3 and dining room 4. A communicating opening 6 of the partitioning furniture 5 is formed on the bottom surface 7 with a belt-shaped air ejecting port 10 of an air ejector 9 for forming cutting-off air flow 8 in the communicating opening 6. An intake port 13 of a suction device 12 in the upper section 11 opposed to the belt-shaped air ejecting port 10 to suck the air flow 8 from the air ejecting port 10 is provided. Then, a stink, heat, etc., generated in the kitchen 3 side do not flow into the dining room 4 side so that an unpleasant feeling is not given to the dining room 4 side, i.e., the rooms other than the kitchen can be kept comfortable while an emancipatory feeling is kept in the open kitchen, semiopen kitchen or the like.