| 摘要 |
The invention relates to a device making it possible to ventilate, without the risk of rain, wind or sand entering into the buildings, greenhouses or shelters by traction. It consists of an arched element 1 fixed on each side to bars 10. It tilts by traction on the arm 8. It is folding by the sliding of the tube 3 in the tube 2 and the sliding of the tube 6 in the tube 5. The fixing is held by the element 6 fixed to a frame 11. The articulations are locked by the assembly 7 fixed to the module 7 and are reinforced by the system 4. When the user exerts traction on the arm 8, the elements 8 and 9 tilt and enable the ventilation to be adjusted. <IMAGE>
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