| 摘要 |
<p>A noise screen for a traffic route, said screen being composed of a substantially vertically extending wall, which extends alongside the traffic route. In order to limit the inflence of wind on the effectiveness of the noise screen a construction of (2) of mesh material is provided on the top edge of the wall of the noise screen for breaking the wind, said construction of mesh material extending over some distance above the wall of the screen, en projects over some distance beyond the side of the wall of the screen facing the traffic route (A). Preferably the construction of mesh material is composed of two concentric in cross section circular mesh walls (3,4), a strip of sound-absorbing material being situated in the center point. The outer mesh wall (3) has a greater air permeability than the inner mesh wall (4).</p> |
