LUMINAIRE

• Main Authors: SHINOHARA KATSUNORI, YAMASHINA KAZUNARI
• Format: Patent
• Language: English; Japanese
• Published: 21.06.2018
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

PROBLEM TO BE SOLVED: To provide a luminaire capable of suppressing luminance spots by suppressing deterioration in luminance of corner parts of a diffusion plate, even when a housing in which a light guide plate is stored and the diffusion plate are fixed with each other by screws at the corner parts of the diffusion plate.SOLUTION: A luminaire 1 includes: a light guide plate 2; an LED 3 arranged so as to face an end surface of the light guide plate 2; a storage part 8a in which the LED 3 is stored; a diffusion plate 6 fixed to the storage part 8a; and screws 14 for fixing the storage part 8a and the diffusion plate 6. In the storage part 8a, the light guide plate 2 is stored in such a manner that a thickness direction of the light guide plate 2 coincides with a Z direction. The diffusion plate 6 is arranged in such a manner that a thickness direction of the diffusion plate 6 coincides with the Z direction. When viewed from the Z direction, corner parts of the light guide plate 2 and corner parts of the diffusion plate 6 are overlapped with each other, and the screws 14 are arranged at the corner parts of the light guide plate 2. At the corner parts of the light guide plate 2, cutout parts 2h, 2j are formed so as to cut out the corners of the light guide plate 2, and in each of the cutout parts 2h, 2j, one part of a shaft part of the screw 14 is arranged.SELECTED DRAWING: Figure 2 【課題】導光板が収容される筐体と拡散板とが拡散板の角部においてネジで互いに固定されていても、拡散板の角部の輝度の低下を抑制して、輝度斑を抑制することが可能な照明装置を提供する。【解決手段】照明装置１は、導光板２と、導光板２の端面に臨むように配置されるＬＥＤ３と、ＬＥＤ３が収容される収容部８ａと、収容部８ａに固定される拡散板６と、収容部８ａと拡散板６とを固定するネジ１４とを備えている。収容部８ａには、導光板２の厚さ方向とＺ方向とが一致するように導光板２が収容され、拡散板６は、拡散板６の厚さ方向とＺ方向とが一致するように配置されている。Ｚ方向から見たときに、導光板２の角部と拡散板６の角部とが重なっており、ネジ１４は、導光板２の角部に配置されている。導光板２の角部には、切欠き部２ｈ、２ｊが導光板２の角を切り欠くように形成されており、切欠き部２ｈ、２ｊには、ネジ１４の軸部の一部が配置されている。【選択図】図２