| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a ventilation duct serving as an illumination capable of reducing an installation and occupied space by providing illumination and ventilation concurrently, and capable of facilitating installation and arrangement work by connecting a plurality of ducts. <P>SOLUTION: This duct is provided with at least two or more of optical pipes with air flowing in its inside and with light advancing total-reflectedly, and a connector for connecting the optical pipes and having a connection nipple for pipe connection. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
