| 摘要 |
The invention relates to a tubular reinforcing element for the frame tube 2 in a light column or the like, which reinforcing element comprises a reinforcing tube 1 disposed in the frame tube 2, the reinforcing tube 1 having been arranged to bear against the inner face of the frame tube 2 through the expansion of the reinforcing tube by means of a force acting from inside to out in the radial direction. In order to achieve secure fastening for the reinforcing tube 1, at least one inwardly directed elbow 6 has been configured in its wall, which elbow is arranged such that, when the reinforcing tube 1 is expanded, the elbow is straightened and extends the outer periphery of the reinforcing tube such that the reinforcing tube 1, following expansion, bears against the inner face of the frame tube 2. <IMAGE>
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