DEVICE FOR TESTING WEATHER RESISTANCE

PROBLEM TO BE SOLVED: To allow a specified ultraviolet ray to enter accurately and perform testing accurately by arranging a sample table in a part to be irradiated by ultraviolet ray of an ultraviolet ray source and placing an ultraviolet ray receiver under the light source. SOLUTION: After a rubber, etc., are placed on a testing table 14, a light source for radiating ultraviolet ray is lit up to emit an ultraviolet ray to a sample on the table 14. In order to conduct a weather resistance test, the ultraviolet irradiation test and dewing test are alternately performed at a specified cycle of time. At this time, an ultraviolet ray receiver 16 is covered with a light-shielding cover provided with a light-receiving window made of light- transmissive quartz. Since the light-shielding cover is covered with a light- transmissive cover, the quantity of ultraviolet ray applying to a light receiving element can be controlled constantly at a proper range.