| 摘要 |
A signalling device suitable for being secured people and/or objects to be spotted at a distance, comprising a casing ( 1 ), anchoring means ( 3 ) suitable for constraining the casing ( 1 ) to a person's limb or an object in touch with a person, an inflatable body member ( 4 ) located in the casing ( 1 ) in a collapsed condition and having an inflation mouth ( 6 ), a cable ( 12 ) having one end thereof secured to the inflatable body member ( 4 ) and its other end anchored to the casing ( 1 ), a compressed fluid container ( 7 ) arranged to supply a fluid lighter than the air, valve means ( 9 ) in a closed condition designed to control fluid flow from the fluid container ( 7 ) to the inflation mouth ( 6 ), and control means ( 10, 11 ) arranged to open the valve means ( 9 ), thereby inflating the inflatable body member ( 4 ) and causing it to rise from the casing into the air while being anchored through the cable ( 12 ) to the casing ( 1 ) to constitute a spotting signal.
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