| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an optical information outlet of a monument type in which the stability is excellent, such abnormality as the line break of an optical fiber is easily recovered and the manufacturing, handling, and installing of components are easy. <P>SOLUTION: A cylindrical cover 4 with a closed upper part which covers a support 3 is freely detachably connected to the upper part of the support 3 in the cover, the cover 4 is pressed against a base metallic attachment 2 by applying a downward tensile force by connecting the cover and the attachment, thus the stability of the cover 4 and the support 3 is enhanced. Further, the connection and release of the cover 4 to the support 3 are performed by opening a door 15, and the cover 4 and the support 3 are freely detachable even after the lower part of the cover is fixed with concrete. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
