Balloon for lighted sign comprising an inflatable envelope with self-regulated internal pressure
First Claim
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1. A balloon, comprising:
- an envelope made of translucent flexible material and being inflatable by a gas;
a mast for supporting the envelope;
lighting means having at least one electric lamp arranged inside the envelope;
means for electrical power supply of the lamp; and
electro-pneumatic blowing means for inflating the envelope, wherein an upper part of the mast passes vertically through the envelope to give the envelope a static rigidity at the level of the diametrically opposed bottom pole and top pole, the mast being hollow throughout a majority of a length of the mast and having at least one air outlet orifice in the upper part to perform inflation of the envelope by the electro-pneumatic blowing means.
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Abstract
A balloon includes an envelope inflatable by a gas, in particular air, an anemometer for detection of the wind speed outside the envelope, and a control circuit to control a fan so as to make the internal inflation pressure of the envelope vary according to the wind speed. The upper part of the mast passes vertically through the envelope to give the latter a static rigidity at the level of the diametrically opposed bottom pole and top pole. The mast is hollow and includes at least one air outlet orifice in its upper part to perform inflation of the envelope.
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Citations
10 Claims
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1. A balloon, comprising:
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an envelope made of translucent flexible material and being inflatable by a gas; a mast for supporting the envelope; lighting means having at least one electric lamp arranged inside the envelope; means for electrical power supply of the lamp; and electro-pneumatic blowing means for inflating the envelope, wherein an upper part of the mast passes vertically through the envelope to give the envelope a static rigidity at the level of the diametrically opposed bottom pole and top pole, the mast being hollow throughout a majority of a length of the mast and having at least one air outlet orifice in the upper part to perform inflation of the envelope by the electro-pneumatic blowing means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification