Distress flare

1. A distress flare comprising:

a cartridge comprising two ends connected by a side surface;

activation means configured for expelling the cartridge into the sky;

illuminating means powered by a battery and capable of emitting visible light, said illuminating means being arranged on the side surface; and

deploying means for deploying an inflatable shell that covers the side surface,

wherein the inflatable shell is configured to diffuse the visible light.

2. The distress flare according to claim 1 , wherein the illuminating means includes light emitting diodes configured to emit visible light according to a predetermined spectrum of wavelengths.

3. The distress flare according to claim 2 , wherein the inflatable shell is coated in a layer of luminophore material configured to modify the spectral range of the visible light emitted by the illuminating means.

4. The distress flare according to claim 3 , wherein the modification of the spectral range comprises an increase in said range.

5. The distress flare according to claim 1 , wherein the inflatable shell, when deployed, allows the distress flare to float.

6. The distress flare according to claim 1 , wherein the deploying means includes a pyrotechnic charge arranged at one end of the cartridge.

7. The distress flare according to claim 1 , wherein the activation means includes a case engaging with the cartridge, and includes a pyrotechnic charge configured to expel the cartridge.

8. The distress flare according to claim 1 , wherein the distress flare includes an electronic control module, powered by the battery, configured to modulate an intensity of the visible light as a function of an altitude of said flare according to predetermined criteria.

9. The distress flare according to claim 8 , wherein the predetermined criteria requires that the illuminating means emit continuous visible light, the intensity whereof is at least equal to a first threshold intensity when the distress flare is located at an altitude that exceeds a threshold altitude.

10. The distress flare according to claim 8 , wherein the predetermined criteria requires that the illuminating means have an energy-saving mode when the distress flare is located at ground level and/or when the charge status of the battery is less than a threshold charge level,

wherein the energy-saving mode includes the emission of intermittent visible light and/or of visible light having an intensity that is less than a second threshold intensity, whereby the second threshold intensity is less than the first threshold intensity.

11. The distress flare according to claim 8 , wherein the control module further controls an activation of the deploying means.

12. The distress flare according to claim 11 , wherein the control module is configured to initiate the activation when the distress flare has reached a maximum altitude.

13. The distress flare according to claim 8 , wherein the distress flare further comprises a distress module suitable for emitting a distress signal.

14. The distress flare according to claim 13 , wherein the flare further comprises a positioning module configured to determine a position of the distress flare, said position being encoded in the distress signal emitted by the distress module.

15. The distress flare according to claim 14 , wherein the positioning module is a satellite positioning module.

16. The distress flare according to claim 13 , wherein the distress signal is emitted on an international distress frequency.

17. The distress flare according to claim 1 , wherein the distress flare further comprises a parachute configured to be deployed during a parachutal phase, and after having reached a maximum altitude.

18. The distress flare according to claim 17 , wherein the distress flare comprises an electronic control module, powered by the battery, configured to modulate an intensity of the visible light as a function of an altitude of said flare according to predetermined criteria, and

wherein the deployment of the parachute is controlled by the control module.

19. The distress flare according to claim 17 , wherein the parachute is configured to be ejected when said flare is located on the ground or in water.