| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a buried member capable of leading a walker in an underground market to which neither sunlight nor electric wave of GPS reaches, for example, in the case of a disaster. <P>SOLUTION: The buried member 1 is so constituted that a sheet material 21 forming a two-dimensional code pattern 23 coding positional information on the inside of a cover member 16 and that it is buried in floor surface or the like. The buried member 1 is so constituted that power is generated by force applied to the cover member 16 and that a luminous member 33 is caused to emit light by the power. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
