| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultraviolet ray irradiation device which is constituted into a small size and efficiently irradiates the ultraviolet ray on an object to be irradiated. SOLUTION: An ultraviolet ray irradiation device is so constituted that a long light source 12 is mounted in the inside of an ultraviolet ray irradiation device, an elliptical upper reflection plate 13 is provided on the upper part of the light source, and elliptical side reflection plates 14 are arranged on its both sides, the upper reflection plate 13 and the side reflection plates 14 have the same focus, and the reflection light of the end of the upper reflection plate 13 is hardly reflected to the outside of the ends of the both side reflection plates 14. |
