| 摘要 |
PROBLEM TO BE SOLVED: To prevent tar and smell of tobacco from clinging to the surface of room interior, and enable one to smoke seated and relaxed with other family members in one room. SOLUTION: A ventilator 1 having an exhausting capacity of not less than 0.4 M/S at a wind velocity in a suction surface thereof, is selected. A small smoking space is prepared being defined by a transparent sheet 5 having a shape of canopy. An accommodation box 2 which can be rolled up and down is provided. The ventilator 1, a rail 4 and the accommodation box 2 are included in a unit by means of a fixing frame 3. The assembly can be readily done at a desired spot, and at the time of cleaning, the sheet 5 can be readily removed and fitted in. Thus, there can be provided a local ventilation system which can raise trapping wind velocity of tobacco smoke at an exhausting point as much as possible. |
