| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily recover visibility of a road sign pole in a short time without carrying out cleaning work of the road sign pole. <P>SOLUTION: This road sign pole disposed on a road has a hollow columnar member fixedly disposed on the road, a replaceable sleeve-like film member covering the exterior of the columnar member in close contact, and a cap member fitted to the upper part of the columnar member while pressing down the film member. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
