LIGHTING DEVICE, DISPLAY DEVICE, AND TELEVISION RECEIVING DEVICE

• Main Authors: GOTO AKIRA, KAMATA KENTARO, HARADA MASANOBU, SHIMIZU TAKAHARU, MATSUI KEITARO
• Format: Patent
• Language: English; Japanese
• Published: 25.10.2018
• 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

PROBLEM TO BE SOLVED: To reduce color unevenness of exiting light tinted with primary light from a light source more in an end than in a center in an edge light type lighting device.SOLUTION: A lighting device 12 comprises: a light source 17 configured to emit primary light rays included in a predefined wavelength range; a light guide plate 19 comprising a light entering surface 19c through which the primary light rays enter, a light exiting surface 19a through which the primary light rays exit, and an opposite surface 19b on a side opposite from the light exiting surface 19a; a reflection member 20 covering the opposite surface 19b; a wavelength converting member 150 containing phosphors configured to emit secondary light rays included in another wavelength range different from the wavelength range when excited by the primary light rays, the wavelength converting member being configured to pass some of the primary light rays; and a complementary color member 22 disposed to cover a gap S1 formed between the light source 17 and a light entering end 190 at least from the light exiting surface 19a side or cover the light entering end 190 at least from the opposite surface 19b side, the complementary color member exhibiting a color complementary to a reference color exhibited by the primary light rays.SELECTED DRAWING: Figure 4 【課題】エッジライト式の照明装置において端側が中央側よりも光源の一次光の色彩で色付く出射光の色ムラを抑制する。【解決手段】本発明の照明装置１２は、所定の波長領域に含まれる一次光を出射する光源１７と、前記一次光が入射される光入射面１９ｃと、前記一次光を出射させる光出射面１９ａと、光出射面１９ａの反対側に配される反対面１９ｂとを有する導光板１９と、反対面１９ｂを覆うように配される反射部材２０と、一次光によって励起されて前記波長領域とは異なる他の波長領域に含まれる二次光を放出する蛍光体を含有し、一次光の一部を透過させる波長変換部材１５０と、光源１７と入射端部１９０との間に形成される隙間Ｓ１を、光出射面１９ａ側から少なくとも覆うように又は入射端部１９０を反対面１９ｂ側から少なくとも覆うように配され、一次光が呈する基準色と補色の関係にある色を呈する補色部２２とを備える。【選択図】図４