| 摘要 |
The invention relates to a device making it possible to send out a series of clouds into the sky which are arranged in a matrix of parallel lines, which, seen from the ground, forms a graphical representation capable of containing words or images. It consists of a series of dispensers (of smoke, of mist, of powder or of aerosols) individually controlled by an automatic system and arranged along a boom which keeps a constant spacing between each of these dispensers. This dispenser boom is held in a straight line in the sky, the relative displacement of the surrounding air resulting in the cloudy emissions, which may be coloured or uncoloured, along parallel lines. The device according to the invention is particularly intended for writing information messages, advertising slogans, artistic creations and various signs in the sky. <IMAGE>
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