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1. WO2011105147 - LIGHTING DEVICE, DISPLAY DEVICE, AND TELEVISION RECEIVER

Publication Number WO/2011/105147
Publication Date 01.09.2011
International Application No. PCT/JP2011/051177
International Filing Date 24.01.2011
IPC
F21S 2/00 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
2Systems of lighting devices, not provided for in main groups F21S4/-F21S10/113
G02F 1/13357 2006.1
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333Constructional arrangements
1335Structural association of cells with optical devices, e.g. polarisers or reflectors
13357Illuminating devices
F21Y 101/02 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V124
101Point-like light sources
02Miniature, e.g. light emitting diodes (LED)
CPC
G02B 6/003
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
0001specially adapted for lighting devices or systems
0011the light guides being planar or of plate-like form
0013Means for improving the coupling-in of light from the light source into the light guide
0023provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
003Lens or lenticular sheet or layer
G02B 6/0031
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
0001specially adapted for lighting devices or systems
0011the light guides being planar or of plate-like form
0013Means for improving the coupling-in of light from the light source into the light guide
0023provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
0031Reflecting element, sheet or layer
G02B 6/0068
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
0001specially adapted for lighting devices or systems
0011the light guides being planar or of plate-like form
0066characterised by the light source being coupled to the light guide
0068Arrangements of plural sources, e.g. multi-colour light sources
G02B 6/0073
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
0001specially adapted for lighting devices or systems
0011the light guides being planar or of plate-like form
0066characterised by the light source being coupled to the light guide
0073Light emitting diode [LED]
G02B 6/0085
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
0001specially adapted for lighting devices or systems
0011the light guides being planar or of plate-like form
0081Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
0085Means for removing heat created by the light source from the package
Applicants
  • シャープ株式会社 SHARP KABUSHIKI KAISHA [JP]/[JP] (AllExceptUS)
  • 鷹田 良樹 TAKATA Yoshiki (UsOnly)
Inventors
  • 鷹田 良樹 TAKATA Yoshiki
Agents
  • 特許業務法人暁合同特許事務所 AKATSUKI UNION PATENT FIRM
Priority Data
2010-04198926.02.2010JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) LIGHTING DEVICE, DISPLAY DEVICE, AND TELEVISION RECEIVER
(FR) DISPOSITIF D'ÉCLAIRAGE, DISPOSITIF D'AFFICHAGE, ET DISPOSITIF DE RÉCEPTION DE TÉLÉVISION
(JA) 照明装置、表示装置及びテレビ受信装置
Abstract
(EN) Disclosed is a lighting device that can suppress the formation of dark portions at the light incident surface of a light guide plate. The lighting device is characterized by: being provided with a light source (17), a light guide plate (19) that has a light incident surface (19b) on a side and that guides light from the aforementioned light source (17) and incident to the aforementioned light incident surface (19b), and a light-path alteration member (34) that covers the light emitting surface (17a) of the aforementioned light source (17) and that alters the light path of light emitted from said light source (17); the aforementioned light source (17) being disposed facing the aforementioned light incident surface (19b) of the aforementioned light guide plate (19) with the aforementioned light-path alteration member (34) therebetween; and the aforementioned light-path alteration member (34) causing light emitted from the aforementioned light source (17) to radiate directed towards the portions (19b2) of the aforementioned light incident surface (19b) that are not directly facing the aforementioned light source (17) by means of reflecting or refracting said light.
(FR) L'invention concerne un dispositif d'éclairage permettant d'empêcher la formation de parties sombres sur une face d'entrée de lumière d'une plaque de guidage de la lumière. Le dispositif d'éclairage de l'invention est équipé : d'une source de lumière (17); d'une plaque de guidage de la lumière (19) possédant des faces d'entrée de lumière (19b) côté latéral, et guidant la lumière incidente depuis ladite source de lumière (17) vers lesdites faces d'entrée de lumière (19b); et d'un élément de modification du trajet de lumière (34) qui tout en couvrant une face d'émission de lumière (17a) de ladite source de lumière (17), modifie le trajet de la lumière émise à partir de la source de lumière (17). Ladite source de lumière (17) est disposée face à ladite face d'entrée de lumière (19b) de ladite plaque de guidage de la lumière (19), ledit élément de modification du trajet de lumière (34) étant intercalé entre les deux. Ledit élément de modification du trajet de lumière (34) est caractéristique en ce que, par réflexion ou réfraction, la lumière émise par ladite source de lumière (17) est émise en direction du côté d'une région (19b2), desdites faces d'entrée de lumière (19b), ne faisant pas face à la face avant de ladite source de lumière.
(JA) 導光板の入光面に暗部が形成されることを抑制することが可能な照明装置を提供する。本発明に係る照明装置は、光源17と、側面に入光面19bを有し、前記光源17から前記入光面19bに入射した光を導光する導光板19と、前記光源17の光出射面17aを覆うとともに、当該光源17から出射された光の光路を変更する光路変更部材34と、を備え、前記光源17は、前記光路変更部材34を介して、前記導光板19の前記入光面19bと対向して配置されており、前記光路変更部材34は、前記光源17から出射された光を、反射又は屈折させることにより、前記入光面19bのうち前記光源17とは正面対向しない部位19b2側へ指向させて出射することを特徴とする。
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