LIGHTING MODULE - NITTOH KOGAKU KK

Title:

LIGHTING MODULE

Document Type and Number:

Japanese Patent JP2018107024

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide a structure of a lighting module capable of easily achieving equalization of luminance of a light emission range by making luminance adjustment of a peripheral edge part easy.SOLUTION: A lighting module 10 includes: a light source 11; a light guide plate 12 including a light incident end surface 12a where light emitted from the light source 11 enters and a light emission main surface 12b which emits the light which has entered from the light incident end surface 12a; and a diffusion plate 13 including a light incident surface 13a opposing to the light emission main surface 12b of the light guide plate 12 and including a light emission surface 13b provided on the opposite side from the light guide plate 12 with respect to the light incident surface 13a. Here, at the diffusion plate 13, a projection strip part 13c is provided which protrudes to the light guide plate 12 side on the peripheral edge part of the light incident surface 13a and extends along an outer edge of the peripheral edge part. Also, the light guide plate 12 is arranged adjacent to the inside with respect to a projection-like part 13c, and includes an outward emission surface part 123 facing outside which emits light toward the projection strip part 13c.SELECTED DRAWING: Figure 7

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