| 摘要 |
PROBLEM TO BE SOLVED: To improve a ventilating port in regard to a problem wherein contamination is generated on a surrounding ceiling and walls due to the outflow of ventilating air stream or a problem wherein uncomfortable feeling is given to a passerby by the ventilating air stream. SOLUTION: A ventilating port is provided with a cover unit 2, provided with slanted fins 4 on the rim of a slender ventilating opening. Respective slanted from fins are provided with different slanting angles, which are different from each other in neighboring fins, while imaginary lines of elongation in respective slanting directions of the fins are designed so as to have a radial shape substantially. According to this method, ventilating air stream can be sent out of the ventilating port as uniform as possible while dispersing it into a range as wide as possible under a condition that the pressure loss of the ventilation is not increased. |
