| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent both hydrophilic and hydrophobic adhesive substances from adhering to the surface of a member and keep the surface clean by forming a surface layer, in which both hydrophilic and water repellent parts are dispersed in micro level, on glass cover surface. SOLUTION: A lighting system 10 is buried and has a housing 14 buried in a concrete wall 12. A light source 16 is covered with a cover glass 18. As the light source 16, a low pressure sodium lamp, high pressure sodium lamp, a fluorescent lamp, a mercury lamp, a fluorescent mercury lamp, other types of electric lamps can be employed. A practically transparent surface layer 20 having a structure in which hydrophilic parts so exposed as to bring photocatalytic oxide particles into contact with outside air and water-repellent parts exposed to bring water-repellent fluororesin into contact with outside air are dispersed in a micro level is formed on the outer surface of the glass cover 18. The film thickness of the surface layer 20 is preferably set to be 0.4μm or thinner. Consequently, opaqueness due to diffused reflection of light rays can be prevented and practically transparent property can be obtained.</p> |
