| 摘要 |
PROBLEM TO BE SOLVED: To provide a ventilation equipment for a roof, in which a backflow in a ventilation passage of wind and rain in the blow-up direction and the slanting direction can be prevented even at the time of exposure to the wind and the rain. SOLUTION: An apron wall 27 is installed to a cover plate 13, a lower ventilating opening 28 is formed between the upper and lower sections of the lower end of the apron wall 27 and a roofing material 7, and an upper ventilating opening 29 is formed on the top face side as a section in the vicinity of the upper end section of the apron wall 27. Since slating wind and rain collide with the apron wall 27 at that time and are formed in a flow Y peeling at high speed to an upper section, negative pressure (suction action) is generated in the upper ventilating opening 29, and wind and rain blown into the lower ventilating opening 28 are sucked out.
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