| 摘要 |
PROBLEM TO BE SOLVED: To completely clean an ambient air even in a place where an ultraviolet light hardly reaches, for example, a narrow place, a crooked place or the like. SOLUTION: In an air cleaning device structured of a light source 1 which emits an ultraviolet light and a lateral light-emitting optical fiber cable 2 which emits light linearly, the lateral light-emitting optical fiber cable 2 has a cladding layer formed on a core, and a matter containing a titanium oxide is formed at a part or the entirety of the outer periphery of the cladding layer. |
