| 摘要 |
PROBLEM TO BE SOLVED: To provide a sprinkler head which is cleaning-free and wherein the beautiful appearance can be maintained and the deterioration of sensitivity is prevented due to covering the surface of the sprinkler head with trash, dust and corrosion product in the sprinkler head installed indoor. SOLUTION: On the surface of the sprinkler head, a thin film of a photocatalyst having the decomposing function of bacteria, smell and a stain by optical energy is formed. Otherwise, on the surface of the sprinkler head, a thin film of a photocatalyst having hydrophilic action by optical energy is formed. COPYRIGHT: (C)2005,JPO&NCIPI
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