ILLUMINATING DEVICE AND DISPLAY DEVICE

To suppress such a situation that temperature of a light source arranged above a light guiding plate becomes high when light sources are respectively arranged above and below the light guiding plate.SOLUTION: An illuminating device comprises: an LED unit 30; an LED unit 40 which is arranged perpendi...

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Bibliographic Details
Main Authors OKAWA YUKI, KAMATA KENTARO
Format Patent
LanguageEnglish
Japanese
Published 29.08.2019
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
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
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Summary:To suppress such a situation that temperature of a light source arranged above a light guiding plate becomes high when light sources are respectively arranged above and below the light guiding plate.SOLUTION: An illuminating device comprises: an LED unit 30; an LED unit 40 which is arranged perpendicularly above the LED unit 30, and has smaller power consumption than that of the LED unit 30; and a light guiding plate 50 having a light incidence surface 51 which is composed of a surface opposed to the LED unit 30 and on which the light emitted by the LED unit 30 is made incident, a light incidence surface 52 which is composed of a surface opposed to the LED unit 40 and on which the light emitted by the LED unit 40 is made incident, and a light emission surface 53 which is composed of one plate surface and from which the lights made incident from the light incidence surface 51 and light incidence surface 52 are emitted.SELECTED DRAWING: Figure 3 【課題】導光板の上下両側にそれぞれ光源が配された場合において、上側に配された光源が高温となる事態を抑制する。【解決手段】ＬＥＤユニット３０と、ＬＥＤユニット３０に対して鉛直方向上側に配されると共に消費電力がＬＥＤユニット３０に比べて小さいＬＥＤユニット４０と、ＬＥＤユニット３０と対向する面からなり、ＬＥＤユニット３０から出射された光が入射する光入射面５１と、ＬＥＤユニット４０と対向する面からなり、ＬＥＤユニット４０から出射された光が入射する光入射面５２と、一方の板面からなり、光入射面５１及び光入射面５２から入射された光が出射される光出射面５３と、を有する導光板５０と、を備えることに特徴を有する。【選択図】図３
Bibliography:Application Number: JP20180030607