| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the following problems: a conventional cone cover cannot be used for a road sign cone used widely and cannot enhance night-time visibility. <P>SOLUTION: A cone cover is used by covering a road sign cone so as to solve the above problems. The cone cover includes an approximately cone-shaped optically-transparent cone cover body, and a plurality of skirt-part LED illuminants which are arranged along an inner peripheral surface of a skirt part of the cone cover body and which have a light illumination direction directed toward the top of the cone cover approximately along the inner peripheral surface of the cone cover body. <P>COPYRIGHT: (C)2013,JPO&INPIT |
