| 摘要 |
A life jacket consists of front (1) and rear (2) sections made from linked rigid inner and outer walls with holes (3, 4, 5) for the torso, neck and arms, forming a sealed chamber containing buoyancy floats and one or more heat sources to heat the air inside the cavity and circulate it. A life jacket consists of front (1) and rear (2) sections made from linked rigid inner and outer walls with holes (3, 4, 5) for the torso, neck and arms, forming a sealed chamber containing buoyancy floats and one or more heat sources to heat the air inside the cavity and circulate it. The heat source is in the form of at least one exothermic cartridge inserted into a sealed and movable container, while a rechargeable electrical source powers a flashing light (7) and radio transmitter.
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