| 摘要 |
The present invention relates to a transparent element of anti-noise screens, installed particularly along road communications with a heavy traffic, said transparent element consisting of two transparent plates (1, 2) fastened in a distance frame (5). An air gap (6) with absorption elements (9) arranged therein is performed between the two transparent plates (1, 2). The absorption elements (9) are usually in the form of bars of different shapes made of crystalline sand solid particles coupled by a binding agent such that air channels are formed between them. The transparent plate (2) turned toward the source of noise is provided with primary openings (3), serving as entry for noise between both the transparent plates (1, 2), and secondary openings (4), optionally recesses (10), serving for attaching the absorption elements (9). Another damping material (7) is attached by means of pressure strips (8) to the edges of the distance frame (5). The facing of the absorption elements (9) is always smaller than 3 percent of the total facing of each panel of the transparent anti-noise screen. |
