Device for signalling in an aquatic environment

Abstract

A signalling system is configured to be carried by a user at the surface of a body of water. The system includes a device for ejecting a fluid having a first fluid inlet configured to enable the penetration of water into a pipe, a second fluid inlet configured to enable the penetration of gas into the pipe, a fluid outlet of the pipe is configured so as to enable the formation of a fluid jet propagating out of the system. The jet being formed of the water and the gas coming out of the pipe. The ejection device being configured so that the water and gas mix in the pipe.

1 . A signalling system configured to be carried by a user at the surface of a body of water, the system comprising a device for ejecting a fluid, the ejection device comprises:
 at least one first fluid inlet configured to enable the penetration of water from the body of water into a pipe of the ejection device,   at least one second fluid inlet configured to be connected to a source of a pressurized gas, in order to enable the penetration of the gas inside the pipe, the ejection device being configured so that water and the gas mix in the pipe, and   at least one fluid outlet of the pipe configured so as to enable the formation of a fluid jet propagating outside the system according to a main direction, the jet being formed of water and gas escaping from the pipe.   
     
     
         2 . The system according to  claim 1 , further comprising at least one optical output, secured to the ejection device and configured so as to propagate a light beam delimited by a casing according to at least one secondary direction, the system being configured so that the envelope of the light beam emitted from the optical output intersects the envelope of the beam of the fluid jet ejected from the fluid outlet. 
     
     
         3 . The system according to  claim 2 , further comprising a casing, the casing incorporating the pipe with the first fluid inlet, the second fluid inlet, the first fluid outlet with the optical output. 
     
     
         4 . The system according to  claim 2 , wherein the jet has a height Hj and the system being configured so that the envelope of the light beam intersects the fluid jet over a height, measured according to the vertical, such that H i ≥0.5*H j . 
     
     
         5 . The system according to  claim 2 , configured so that the light beam propagates according to the secondary direction and has a divergence angle α smaller than or equal to 45° with respect to the main direction. 
     
     
         6 . (canceled) 
     
     
         7 . (canceled) 
     
     
         8 . The system according to  claim 1 , wherein the pipe has a constriction of the at least one second fluid inlet, configured so as to suck water at the level of the first fluid inlet by Venturi effect. 
     
     
         9 . The system according to  claim 1 , wherein the at least one first fluid inlet is more than one first fluid inlets. 
     
     
         10 . (canceled) 
     
     
         11 . (canceled) 
     
     
         12 . The system according to  claim 2 , the system being configured to emit several light beams and several fluid jets so that each light beam intersects at least one fluid jet. 
     
     
         13 . The system according to  claim 2 , wherein the light beam is configured so as to intersect the jet at a different distance. 
     
     
         14 . The system according to  claim 2 , wherein the light beam is flared and or discontinuous so as to cover a larger area, at the same time, the jet has a diffuse shape in order to illuminate a microdroplet area. 
     
     
         15 . (canceled) 
     
     
         16 . The system according to  claim 1 , configured to be carried at an arm of the user. 
     
     
         17 . The system according to  claim 1 , comprising a light source configured to emit a light beam. 
     
     
         18 . (canceled) 
     
     
         19 . The system according to  claim 1 , wherein the at least one fluid outlet is divided into several elementary outlets. 
     
     
         20 . The system according to  claim 1 , further comprising several light sources. 
     
     
         21 . (canceled) 
     
     
         22 . (canceled) 
     
     
         23 . (canceled) 
     
     
         24 . The system according to  claim 1 , configured so as to continuously propagate said fluid jet when the at least one first fluid inlet is supplied with water from the body of water and simultaneously the at least one fluid outlet is arranged outside the water. 
     
     
         25 . (canceled) 
     
     
         26 . A set comprising a system according to  claim 1  and a gas source, both being distinct elements and configured to be fluidly connected via an adapter so as to supply the second fluid inlet with gas. 
     
     
         27 . A method for signalling a user, at the surface of a body of water using a system according to  claim 1 , the system being carried by the user, the method comprising a step of fluid connection to the second fluid inlet of an air inlet pipe connected to a pressurized gas tank, comprised in a piece of equipment of the user. 
     
     
         28 . The method according to  claim 27 , further comprising a step of turning on a light source so that an optical output emits a beam that diffuses into the water jet. 
     
     
         29 . (canceled) 
     
     
         30 . (canceled) 
     
     
         31 . The method according to  claim 27 , wherein the pressurized gas entering an interior of the pipe has a pressure higher than or equal to 5 bar, so that said jet formed of water and gas coming out of the pipe has a height Hj larger than 50 cm. 
     
     
         32 . The method according to  claim 27 , wherein throughout the propagation of the fluid jet, the ejection device is continuously supplied with water from the body of water via the at least one first fluid inlet.