| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a road sign pole for a road boundary which is light in weight and convenient for handling during installation or removal without corrosion such as rust and also strong against a shock, and hardly causes discoloring. <P>SOLUTION: A hollow road sign pole 1 is formed of an innerpipe 2 and an outer pipe 3 made of synthetic resin such as polyethylene. The outer pipe 3 comprises a plurality of divided pipes 4 formed to portions with different colors such as red, yellow and white or the like so as to make a combination of red and yellow or red and white on the outer periphery of the inner pipe. And the colored divided portions 4 are arranged alternately, for example, the combinations of red and yellow or red and white are formed on the outer periphery of the inner pipe 2. In the case of a road sign pole 1 for the road boundary which has a multiple pipe structure having the inner pipe 2 and the outer pipe 3, the pole resists against rust, break due to an impact and hardly causes discoloring. Also, the pole can be handled easily during installation or removal. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
