LUMINESCENT DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a luminescent device having twinkling feeling.SOLUTION: A lamp device 10 as a luminescent device includes a luminescent element and a light radiation part 47 radiating light of the luminescent element. The average brightness of the light radiation part 47 is equal to or more than 5,000 cd/m, and an apparent size of the light radiation part 47 when being 10 m apart from the light radiation part 47 is equal to or less than 0.000001 sr.SELECTED DRAWING: Figure 1