To absorb ultraviolet rays and prevent exhibits from being irradiated with ultraviolet rays by applying an adhesive mixed with a ultraviolet ray absorbent to the light radiating surface of a fluorescent lamp main body, and sticking an achromatic and transparent fluororesin film.

An achromatic and transparent fluororesin film 11 coated with an adhesive 13 on the back face side is stuck to the light radiating surface 12 of a fluorescent lamp main body. The adhesive 13 is mixed with a ultraviolet ray absorbent, and it absorbs the ultraviolet rays radiated from the light radiating surface 12. The fluororesin of the film 11 is excellent in heat resistance and weather resistance, the film 11 can be directly stuck to the heat source of the fluorescent lamp light radiating surface 12, and the peeling of the ultraviolet ray absorbent is prevented even in the inferior environment. The ultraviolet ray absorbent is mixed in the adhesive 13, not in the film 11, the absorption factor of ultraviolet rays can be improved when the layer of the adhesive 13 is made thick, and the strength of the film 11 is not reduced. Exhibits can be prevented from being radiated with ultraviolet rays when a ultraviolet ray absorbing fluorescent lamp is merely installed.