WO2013018648A1 - Dispositif d'éclairage, dispositif d'affichage et dispositif de réception de télévision - Google Patents

Dispositif d'éclairage, dispositif d'affichage et dispositif de réception de télévision Download PDF

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Publication number
WO2013018648A1
WO2013018648A1 PCT/JP2012/068950 JP2012068950W WO2013018648A1 WO 2013018648 A1 WO2013018648 A1 WO 2013018648A1 JP 2012068950 W JP2012068950 W JP 2012068950W WO 2013018648 A1 WO2013018648 A1 WO 2013018648A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
plate
light source
pressing member
lighting device
Prior art date
Application number
PCT/JP2012/068950
Other languages
English (en)
Japanese (ja)
Inventor
信宏 笠井
Original Assignee
シャープ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Publication of WO2013018648A1 publication Critical patent/WO2013018648A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical 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
    • G02B6/0085—Means for removing heat created by the light source from the package
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices 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 for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical 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
    • G02B6/0086—Positioning aspects
    • G02B6/0091—Positioning aspects of the light source relative to the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices 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 for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133628—Illuminating devices with cooling means

Definitions

  • the technology disclosed in this specification includes a light guide plate provided with a light incident surface on a side surface, a heat radiating plate having heat dissipation, and a light source substrate disposed on one plate surface in contact with the heat radiating plate, A light source disposed on the other plate surface of the light source substrate so as to face the light incident surface of the light guide plate, and disposed between the light guide plate and the heat radiating plate, and receives light from the light source.
  • the light source substrate is pressed against the heat radiating plate by the pressing member, thereby improving the adhesion between the light source substrate and the heat radiating plate. For this reason, a light source board
  • substrate can be closely_contact
  • the pressing member may be attached to the heat radiating plate by a part thereof being screwed to the heat radiating plate. According to this configuration, since the pressing member can be effectively pressed against the heat radiating plate by screwing a part of the pressing member, the light source substrate and the heat radiating plate can be more closely attached, and the heat dissipation can be further improved. Can be increased.
  • the pressing member may be formed of a hard member. According to this configuration, the light source substrate can be more effectively pressed against the heat radiating plate by the pressing member, and the heat dissipation can be further enhanced.
  • the light source may be a white light emitting diode. According to this configuration, the life of the light source can be extended and the power consumption can be reduced.
  • FIG. 1 is an exploded perspective view of the television receiver TV according to the first embodiment.
  • the television receiver TV includes a liquid crystal display device 10, front and back cabinets Ca and Cb that are accommodated so as to sandwich the display device D, a power source P, a tuner T, and a stand S.
  • a pair of heat radiation plates 36, 36, a pair of light emitting diode (LED) units 32, 32, a pair of pressing members 34, 34, the reflection sheet 26, and the light guide plate 20 are accommodated.
  • the pair of heat radiation plates 36, 36 extend in the long side direction of the chassis 22 and have a rectangular cross section, and are arranged in contact with the side plates 22 b, 22 c on the long side of the chassis 22.
  • the pair of LED units 32, 32 extend in the long side direction of the chassis 22, and are arranged on the long side of the chassis 22 in contact with the inside of the heat radiating plate 36. Light is emitted toward the surface 20a side.
  • the LED light source 28 may emit white light by combining a blue light emitting element, a green light emitting element, and a red light emitting element. Further, a combination of an ultraviolet light emitting element and a phosphor may be used. In particular, an ultraviolet light-emitting element may emit white light by applying a phosphor having emission peaks in blue, green, and red, respectively.
  • the light generated from the LED unit 32 enters from the light incident surface 20 a of the light guide plate 20 and exits from the light exit surface 20 b facing the diffusion sheet 18 a,
  • the liquid crystal panel 16 is irradiated from the back side.
  • the LED substrate 30 is pressed against the heat radiating plate 36 by the pressing member 34, so that the adhesion between the LED substrate 30 and the heat radiating plate 36 is improved. For this reason, the LED substrate 30 can be brought into close contact with the heat radiating plate 36 with a small number of screws 38, and good heat dissipation can be ensured. As a result, the emission efficiency of the LED light source 28 can be prevented or suppressed from decreasing, and the life of the LED light source 28 can be prevented or suppressed from decreasing.
  • the surface of the pressing member 34 opposite to the surface in contact with the LED substrate 30 is positioned on the light incident surface 20 a side from the light exit surface of the LED light source 28. For this reason, when the light incident surface 20a of the light guide plate 20 moves to the LED light source 28 side due to vibration, thermal expansion, or the like, the light incident surface 20a comes into contact with the pressing member 34. Contact with the light source 28 can be prevented. Thereby, it can prevent that the light-incidence surface 20a contact
  • a plurality of LED light sources 28 are arranged on the LED substrate 30, and a plurality of openings 34 a are provided at positions overlapping the LED light sources 28 of the pressing member 34. . For this reason, between the LED light sources 28 on the side of the LED substrate 30 on the side where the LED light sources 28 are arranged, the spaces between the LED light sources 28 come into contact with and are pressed against the pressing members 34. Can be pressed against.
  • the pressing member 134 has one rectangular opening 134 a that is horizontally long along the long side direction of the LED substrate 130. All the LED light sources 128 on the LED substrate 130 are inserted into the opening 134a. Even in such a configuration, the light emitted from the LED light source 128 is allowed to enter the light incident surface 120a of the light guide plate 120 while ensuring good heat dissipation by pressing the LED substrate 130 toward the heat radiating plate 136 by the pressing member 134. Can be incident.

Abstract

La présente invention porte sur un dispositif de rétroéclairage (24), lequel dispositif comprend : une plaque de guidage de lumière (20), une phase d'entrée de lumière (20a) étant disposée sur une face latérale de celle-ci ; une plaque de rayonnement (36), qui a une propriété de rayonnement de la chaleur ; un substrat de diodes électroluminescentes (30), qui est positionné de manière qu'une face de plaque de celui-ci soit en contact avec la plaque de rayonnement (36) ; une source de lumière à diodes électroluminescentes (28), qui est positionnée sur l'autre face de plaque du substrat de diodes électroluminescentes (30) opposée à la face d'entrée de lumière (20a) de la plaque de guidage de lumière (20) ; et un élément de pression (34), qui est positionné entre la plaque de guidage de lumière (20) et la plaque de rayonnement (36), qui a une ouverture dans laquelle la lumière venant de la source de lumière à diodes électroluminescentes (28) éclaire la face d'entrée de lumière (20a), est fixé à un site de la plaque de rayonnement (36) qui ne vient pas en contact avec le substrat de diodes électroluminescentes (30), et dont une partie presse l'autre face de plaque du substrat de diodes électroluminescentes (30) sur le côté de plaque de rayonnement (36).
PCT/JP2012/068950 2011-08-03 2012-07-26 Dispositif d'éclairage, dispositif d'affichage et dispositif de réception de télévision WO2013018648A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-169994 2011-08-03
JP2011169994 2011-08-03

Publications (1)

Publication Number Publication Date
WO2013018648A1 true WO2013018648A1 (fr) 2013-02-07

Family

ID=47629173

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/068950 WO2013018648A1 (fr) 2011-08-03 2012-07-26 Dispositif d'éclairage, dispositif d'affichage et dispositif de réception de télévision

Country Status (1)

Country Link
WO (1) WO2013018648A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014206603A (ja) * 2013-04-11 2014-10-30 船井電機株式会社 表示装置及び表示装置の光軸調整方法
JP2015008135A (ja) * 2013-06-24 2015-01-15 エルジー イノテック カンパニー リミテッド 回路基板及び回路基板を含む照明装置
JP2015026599A (ja) * 2013-07-25 2015-02-05 三星ディスプレイ株式會社Ｓａｍｓｕｎｇ Ｄｉｓｐｌａｙ Ｃｏ．，Ｌｔｄ． 表示装置用ライトユニット及びこれを含む液晶表示装置
CN104949007A (zh) * 2015-06-30 2015-09-30 京东方科技集团股份有限公司 一种侧入式背光模组及显示装置
WO2016139780A1 (fr) * 2015-03-04 2016-09-09 堺ディスプレイプロダクト株式会社 Dispositif formant une source de lumière et dispositif d'affichage
WO2017145294A1 (fr) * 2016-02-24 2017-08-31 堺ディスプレイプロダクト株式会社 Dispositif de source de lumière et dispositif d'affichage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009098310A (ja) * 2007-10-15 2009-05-07 Hitachi Displays Ltd 液晶表示装置
JP2009245884A (ja) * 2008-03-31 2009-10-22 Sanken Electric Co Ltd 面光源装置
JP2009272451A (ja) * 2008-05-08 2009-11-19 Hitachi Ltd 面光源モジュール、バックライトユニット及び液晶表示装置
JP2010231964A (ja) * 2009-03-26 2010-10-14 Panasonic Corp 照明装置
JP2010282911A (ja) * 2009-06-08 2010-12-16 Victor Co Of Japan Ltd バックライト装置および画像表示装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009098310A (ja) * 2007-10-15 2009-05-07 Hitachi Displays Ltd 液晶表示装置
JP2009245884A (ja) * 2008-03-31 2009-10-22 Sanken Electric Co Ltd 面光源装置
JP2009272451A (ja) * 2008-05-08 2009-11-19 Hitachi Ltd 面光源モジュール、バックライトユニット及び液晶表示装置
JP2010231964A (ja) * 2009-03-26 2010-10-14 Panasonic Corp 照明装置
JP2010282911A (ja) * 2009-06-08 2010-12-16 Victor Co Of Japan Ltd バックライト装置および画像表示装置

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014206603A (ja) * 2013-04-11 2014-10-30 船井電機株式会社 表示装置及び表示装置の光軸調整方法
JP2015008135A (ja) * 2013-06-24 2015-01-15 エルジー イノテック カンパニー リミテッド 回路基板及び回路基板を含む照明装置
JP2015026599A (ja) * 2013-07-25 2015-02-05 三星ディスプレイ株式會社Ｓａｍｓｕｎｇ Ｄｉｓｐｌａｙ Ｃｏ．，Ｌｔｄ． 表示装置用ライトユニット及びこれを含む液晶表示装置
WO2016139780A1 (fr) * 2015-03-04 2016-09-09 堺ディスプレイプロダクト株式会社 Dispositif formant une source de lumière et dispositif d'affichage
CN107430302A (zh) * 2015-03-04 2017-12-01 堺显示器制品株式会社 光源装置以及显示装置
JPWO2016139780A1 (ja) * 2015-03-04 2017-12-14 堺ディスプレイプロダクト株式会社 光源装置及び表示装置
US10302999B2 (en) 2015-03-04 2019-05-28 Sakai Display Products Corporation Light source device and display device
CN104949007A (zh) * 2015-06-30 2015-09-30 京东方科技集团股份有限公司 一种侧入式背光模组及显示装置
WO2017145294A1 (fr) * 2016-02-24 2017-08-31 堺ディスプレイプロダクト株式会社 Dispositif de source de lumière et dispositif d'affichage

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