| 摘要 |
PROBLEM TO BE SOLVED: To reduce cost by using ultraviolet rays of two wave lengths with one ultraviolet lamp. SOLUTION: A tube 7 composing a luminescent part of the ultraviolet lamp 2 is composed by being divided in the tube peripheral direction in an ozone generating part 10 formed by a first material that transmits a first ultraviolet ray capable of generating ozone and a sterilization part 11 formed by a second material that absorbs the first ultraviolet ray and transmits a second ultraviolet ray of a longer wavelength capable of sterilization and fixing both the parts 10, 11 together. An air cleaning equipment 1 comprises the ultraviolet lamp 2, a filter part member 4 that covers the ozone generating part 10 from outside and is formed by the second material, and a displacement means 3 for selectively exposing the ozone generating part 10 by displacing the filter part member 4 or the ultraviolet lamp 2. |
