DIFFUSION COVER, LIGHTING LAMP, LIGHTING DEVICE, AND MANUFACTURING METHOD OF DIFFUSION COVER

摘要

PROBLEM TO BE SOLVED: To provide a diffusion cover which achieves high light permeability and high light diffusion ability while reducing the manufacturing costs, and to provide a lighting lamp using the diffusion cover, a lighting device, and a manufacturing method of the diffusion cover.SOLUTION: A diffusion cover 2 includes: a light permeable cover body 3 in which a light emitting part 11 is stored; and a diffusion film 4 provided at the cover body 3, the diffusion film 4 in which multiple cavities 5 for diffusing light emitted from the light emitting part 11 are filled with a base material 6.