LUMINAIRE

• Main Authors: KOIZUMI FUMIAKI, AKAHA NAOTOSHI, YAMASHINA KAZUNARI
• Format: Patent
• Language: English; Japanese
• Published: 27.04.2017
• Subjects: BLASTING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LIGHTING; LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE ORSPECIALLY ADAPTED FOR TRANSPORTATION; MECHANICAL ENGINEERING; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; WEAPONS

PROBLEM TO BE SOLVED: To provide a luminaire which enables downsizing while balancing brightness of a light emission surface.SOLUTION: A luminaire 1 has: a light guide plate 14 having a first light incident surface 12 and a first light emission surface 13 which emits light entering from the first light incident surface 12 to a front surface side; an LED light source 9 which causes light to enter into the first light incident surface 12; and a light diffusion plate 2 having a second light incident surface 15 disposed at a side of the first light incident surface 13 and into which the light emitted from the first light emission surface 13 enters, and a second light emission surface 16 from which the light entering from the second light incident surface 15 is emitted. The luminaire 1 has an exterior housing 3 which is provided so as to face the light diffusion plate 2. Fixing engagement parts 80 are respectively provided at a light diffusion plate side wall part 38 which extends from an outer peripheral edge of the light diffusion plate 2 toward the exterior housing 3 side and an exterior housing side wall part 4 which extends from an outer peripheral edge of the exterior housing 3 to the diffusion plate 2 side.SELECTED DRAWING: Figure 2 【課題】光出射面の明るさの均斉化を図りつつ、小型化が可能な照明装置を提供すること。【解決手段】照明装置１は、第１光入射面１２と、第１光入射面１２から入射された光を正面の側に出射させる第１光出射面１３とを有する導光板１４と、第１光入射面１２に光を入射させるＬＥＤ光源９と、第１光出射面１３の側に配置され、第１光出射面１３から出射された光が入射される第２光入射面１５と、第２光入射面１５から入射した光が出射される第２光出射面１６とを有する光拡散板２と、を有する。照明装置１は、光拡散板２に対向するように設けられる外装筐体３を有し、光拡散板２の外周縁から外装筐体３側に向かって延出された光拡散板側壁部３８と、外装筐体３の外周縁から拡散板２側に向かって延出された外装筐体側壁部４とそれぞれに固定用係合部８０が設けられている。【選択図】図２