| 摘要 |
<p>A ventilator at the ridge of a building roof intended to allow external air to escape, which as a result of natural draft flows from the eaves up towards the ridge of the roof on the underside of profiled run-off panels (1). It consists substantially of, on the one hand, a cover plate (8) consisting of two flanks joining over an opening (2) between opposite run-off plates (1) at the ridge, and on the other hand of a cap (3) above the said cover plate (8). Between the cover plate (8) and cap (3) is a space. The cap (3) is perforated at its lower edges extending over opposite run-off panels (1). The cover plate (8) has also perforated rows at right angles below the perforations of cap (3) as well as a perforation at the top in the area of the ridge. At the upper ends of the run-off panels opposite the ridge of the roof is provided a seal between the said panels and the cover plate (8). </p> |
