| 摘要 |
PURPOSE: A traffic warning sign is provided to self-clean the sign by installing an impeller, capable of rotating by wind power, to the plate surface of the sign and making the impeller rotate by wind pressure of a vehicle running on a road. CONSTITUTION: A sign(3) with a caution indication function is attached to a traffic sign body(1) having a support pipe(2). A fixed shaft is installed in the middle of the sign and a rotating shaft(4) to which three vane plates(5) are installed is installed to the fixed shaft. The rotating shaft is fixed by a cap(8) so as to freely rotate. Wipers(7) are installed to the inside of the vane plates by fixing-pieces(6), so as to slide on the sign. |
