| 摘要 |
In the subject matter of the invention, the central wall (possibly even the entire upper end of the pole) of the pole is an intermediate plate between the signal concept carrier and the light source carrying plate. In this way, it is ensured that the signalling head has a narrow appearance and additionally is constructed so as to be fracture-proof and vibration-proof. All of these three main components are plugged one into the other and thus can be easily assembled. <IMAGE>
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