| 摘要 |
PURPOSE: To collect tobacco smoke formed by smoking in a wide scope of area. CONSTITUTION: An air suction box 9, which is located above a site where tobacco smoke rises from a smoking area equipped with chairs 2 and the like and is provided with air suction openings 10 on the corners of wall surfaces 1, 1 and also with a built-in air suction unit 8 having an air cleaning filter, is disposed. A box-shaped appliance 16 set on a floor surface is disposed in a manner of almost encircling chairs 2 on the smoking area, and an air exhaust unit 19 with a blow fan is set in the appliance 16 so that the exhaust flow A1 generated by the air exhaust unit 19 is flowed from an air outlet 18 on the upper end of the appliance 16 upward obliquely to the air suction openings 10. |
