| 摘要 |
PROBLEM TO BE SOLVED: To provide a christmas tree including a photocatalytic body which demonstrates a function of decomposing harmful gas and odors by irradiation with a visible light from various light sources such as a light source for illuminations. SOLUTION: Visible light responsive photocatalyst powder in which tungsten oxide photocatalyst powder has such a color that a* is -5 or less, b* is -5 or more, and L* is 50 or more when indicated by the L*a*b* color system, is applied to at least a part of a christmas tree constituting member, and it is irradiated with visible light from an LED or the like. Thus, indoor odors and harmful gas are decomposed. COPYRIGHT: (C)2009,JPO&INPIT
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