Ultraviolet light emitting source suppression, suppression ultraviolet light-emitting source coating agent for, and method of manufacturing a light emitting source UV suppression

摘要

PURPOSE:To improve the ultraviolet ray suppressive effect, the light flux, and the coloration property, by providing a coverage which consists of a fine powder of zinc oxide and titanium oxide, and a binder, at the outer surface of a glass tube, when a light source such as a fluorescent lamp and a tungsten halogen lamp which can suppress the radiation of ultraviolet rays to the minimum is prodeced. CONSTITUTION:The particle diameter of a fine powder of zinc oxide and titanium oxide which functions as an ultraviolet absorbent is preferable to make less than 0.1mum to obtain a good ultraviolet absorbent function and a good visible light transmissibility. In this case, 4.5wt.pt. of zinc of the particle diameter 0.03mum, and 0.5wt.pt. of titanium of the particle diameter 0.03mum, for example, are included to 100wt.pt. of binder solution. Then, as the binder to compose the film, it is necessary to have little deterioration by the ultraviolet rays, a good transmissibility of visible light, a good attaching property to a glass tube, a good film forming property, and a good drying property. Therefore, a butyral resin, a acrylic resin, a fluorine resin, a silicone resin, sodium silicate, and the like are used.