LUMINAIRE AND DISPLAY DEVICE

• Main Authors: MASUDA JUNICHI, YAGI SHUGO, TSUBOOKA MASARU, KANBAYASHI YUICHI
• Format: Patent
• Language: English; Japanese
• Published: 07.09.2023
• Subjects: BLASTING; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-LINEAR OPTICS; NON-PORTABLE LIGHTING DEVICES; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SYSTEMS THEREOF; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

To improve brightness of light emitted in a direction inclined to a front direction by suppressing outgoing of light to the outside of a limited angular range.SOLUTION: A luminaire 12 includes: a first light source 13; a first light guide plate 14; a first sheet 18 having a third main surface 18A facing a first main surface 14B and a fourth main surface 18B; a second light source 24; and a second light guide plate 25 having a second end face 25A opposed to the second light source 24, a fifth main surface 25B, and a sixth main surface 25C facing the fourth main surface 18B. A first louver 18 has two first light shielding portions 18C disposed at an interval in a first direction including a direction from a first LED 13 toward the first light guide plate 14, and a first translucent portion 18D disposed between the two first light shielding portions 18C and transmitting light. The sixth main surface of the second light guide plate 25 is provided with a first lens 28 having a first slant face of inclination rising toward the second light source 24 side from a side opposite to the second light source 24 in the first direction.SELECTED DRAWING: Figure 1 【課題】制限された角度範囲外への光の出射を抑制し、正面方向に対して傾いた方向への出射光の輝度を向上させる。【解決手段】照明装置１２は、第１光源１３と、第１導光板１４と、第１主面１４Ｂを向いて配される第３主面１８Ａ及び第４主面１８Ｂを有する第１シート１８と、第２光源２４と、第２光源２４と対向する第２端面２５Ａ、第５主面２５Ｂ及び第４主面１８Ｂを向いて配される第６主面２５Ｃを有する第２導光板２５を備え、第１ルーバー１８は、第１ＬＥＤ１３から第１導光板１４へ向かう向きを含む第１方向に間隔を空けて配されて光を遮る２つの第１遮光部１８Ｃと、２つの第１遮光部１８Ｃの間に配されて光を透過する第１透光部１８Ｄを有し、第２導光板２５の第６主面には、第１方向の第２光源２４とは反対側から第２光源２４側に向かって立ち上がる傾斜の第１斜面を有する第１レンズ２８が設けられる。【選択図】図１