| 摘要 |
PURPOSE: A sign bottle on a road is provided to make a traffic lane recognized in any condition, to prevent breakage of a reflecting plate, to prevent damage of a steering device and to bring a driver to sense about safe travelling. CONSTITUTION: A tire directly pressurizes a reflecting member(31) if a vehicle is out of a traffic lane and steps on a sign bottle. The reflecting member compresses a spring(35) and goes into operation spaces after descending while being sealed with the inner walls of the operation spaces by the packings(316,317). The air in the lower operation space is compressed by the instantaneous pressurizing force acting downward and passes through a vent hole(341) of a horn(34) interposed between a first and a second support members(33). Strong vibrating sound is generated in a horn formed of metal plate and the air generating the vibrating sound is discharged via a discharge hole(312) formed on the upper part of a reflecting member(31). The air discharged from the operation spaces is strongly discharged to the outer part around the reflecting member. The dust and the alien substances deposited on the surrounding are flown. Thereby, a driver recognizes the separation of a vehicle from a lane.
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