LIGHTING DEVICE AND LIGHT GUIDE PLATE FOR THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a lighting device capable of uniforming the distribution of brightness even if luminescent elements with plural colors are arranged in the longitudinal direction of the incident plane of a light guide plate. SOLUTION: A lighting device comprises a light guide plate having an emission plane and an incident plate and at least one set of luminescent elements opposed to the incident plane and adjacent to each other along the longitudinal direction of the incident plane. The incident plane is formed to be more extended to the sides of the luminescent elements as closer to a position of the half of a distance between the adjacent luminescent elements.