| 摘要 |
<p>A telescopic trailer warning board, comprising a sleeve board (10) and an embedded board (20); the sleeve board (10) and the embedded board (20) are both hollow boards; the embedded board is inserted inside the sleeve board (10) and is in an axially extending and retracting state; the sleeve board (10) and the embedded board (20) are respectively provided with a first illuminant warning light (11) and a second illuminant warning light (21) at the opposite ends in the hollow core. The length of the telescopic trailer warning board can be adjusted by extending and retracting the sleeve board (10) and the embedded board (20), and the telescopic trailer warning board is suspended at the two sides or the back end of the trailer.</p> |
