LIGHTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME

• Main Authors: KYOKANE YOZO, WATANABE HISASHI, YASUNAGA HIROTOSHI
• Format: Patent
• Language: English; Japanese
• Published: 19.09.2019
• 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; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-LINEAR OPTICS; NON-PORTABLE LIGHTING DEVICES; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; SYSTEMS THEREOF; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

To provide a lighting device which can prevent occurrence of luminance unevenness effectively even if heat shrinkage of a reflection sheet occurs under a predetermined high temperature environment and thereby illuminate in a more uniform manner, and to provide a display device including the lighting device.SOLUTION: A lighting device includes: a substrate 20 in which multiple light emitting elements 17 are arranged in parallel to each other; and a reflection sheet 40 provided on the substrate. Multiple openings 30 are formed on the reflection sheet 40. The multiple light emitting elements 17 respectively overlap with the multiple openings 30 in the reflection sheet 40. The reflection sheet 40 extends in a predetermined extension direction which is determined in advance. A projection part 22 protruding to the reflection sheet 40 side is provided at the substrate 20. The projection part 22 is integrally formed with the substrate 20.SELECTED DRAWING: Figure 5 【課題】所定の高温環境下での反射シートの熱収縮があっても輝度ムラの発生を効果的に防止することができ、これにより均一に照明することができる照明装置及びそれを備えた表示装置を提供する。【解決手段】照明装置は、複数の発光素子１７が並設された基板２０と、基板上に設けられた反射シート４０とを備えている。反射シート４０には複数の開口３０が形成されている。複数の発光素子１７は、それぞれ、反射シート４０における複数の開口３０と重畳している。反射シート４０は、予め定めた所定の延伸方向に延伸されている。基板２０には、反射シート４０側に突出した突起部２２が設けられている。突起部２２は基板２０と一体的に形成されている。【選択図】図５