| 摘要 |
PROBLEM TO BE SOLVED: To resolve the problem that a ventilating air stream along a substan tially straight line, connecting the inflow point of the air stream into a space and a ventilating (exhausting) device, is formed in a space equipped with a conventional ventilating device and the ventilation of the inside of a booth, vicinity of a floor surface or the like, where the ventilating air stream does not reach, was difficult. SOLUTION: A ventilation assisting air stream (ventilating air flow) 235 is generated in the ventilating air stream 105 by a ventilation assisting device 233 equipped with at least a ventilating fan 233a from a position whereat the ventilating air stream 105 will not be arrive whereby the ventilating effect in the space can be improved. |
