WO2013031672A1 - Dispositif d'éclairage, dispositif d'affichage et dispositif récepteur de télévision - Google Patents

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

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Publication number
WO2013031672A1
WO2013031672A1 PCT/JP2012/071400 JP2012071400W WO2013031672A1 WO 2013031672 A1 WO2013031672 A1 WO 2013031672A1 JP 2012071400 W JP2012071400 W JP 2012071400W WO 2013031672 A1 WO2013031672 A1 WO 2013031672A1
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WO
WIPO (PCT)
Prior art keywords
plate
light source
standing wall
mounting member
light
Prior art date
Application number
PCT/JP2012/071400
Other languages
English (en)
Japanese (ja)
Inventor
貴志 荻野
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 WO2013031672A1 publication Critical patent/WO2013031672A1/fr

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Classifications

    • 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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • 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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/0073—Light emitting diode [LED]
    • 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
    • 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
    • G02B6/009—Positioning aspects of the light source in 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
    • G02F1/133628—Illuminating devices with cooling means

Definitions

  • the present invention relates to a lighting device, a display device, and a television receiver.
  • the liquid crystal display device requires a backlight device as a separate illumination device because the liquid crystal panel used for this does not emit light.
  • a backlight device an edge light type backlight device in which a light incident surface is provided on a side surface of a light guide plate and a light source such as an LED is disposed on a side surface side of the light guide plate is known.
  • Patent Document 1 discloses an edge light type backlight device.
  • This backlight device includes a light source substrate on which a light source is arranged, and a holding plate that holds the light source substrate.
  • a latching portion that protrudes toward the holding plate is provided on the plate surface of the light source substrate facing the heat radiating plate, and a latching slit is provided at a position corresponding to the latching portion of the holding plate.
  • the light source substrate is brought into contact with and fixed on the holding plate by the latching portion of the light source substrate being latched by the latching slit of the holding plate. Thereby, the curvature of the light source substrate due to heat or the like is prevented or suppressed.
  • An object of the technology disclosed in this specification is to provide an illumination device that can prevent or suppress warping of a light source substrate due to heat or the like with a simple configuration.
  • the technology disclosed in this specification includes a chassis having at least a plate-shaped portion, a light incident surface provided on a side surface, a light guide plate disposed on one surface side of the plate-shaped portion, and the light incident surface.
  • Opposing light sources a bottom surface provided on the one surface side of the plate-like part and provided along the plate surface of the plate-like part, and at least one standing wall part rising from the bottom part
  • a light source mounting member to which the light source is mounted, wherein the member has a bent shape, and the standing wall portion is fitted between the bent shapes. It relates to an illuminating device provided with these.
  • the light source mounting member can be attached to the light source mounting member while the light source mounting member is held by the holding plate even in a portion other than the portion where the light source mounting member is fastened with a screw or the like by fitting the standing wall portion between the bent shapes of the light source mounting member.
  • part to which the light source of the member was attached will contact
  • a plurality of the standing wall portions are provided, and the light source mounting member is formed by bending a plate-like member, and is provided on one plate surface with a fitting plate portion provided so as to be fitted between the plurality of standing wall portions.
  • a light source plate portion on which the light source is disposed, and a connecting plate portion that connects the fitting plate portion and the light source plate portion, and the fitting plate portion is fitted between the plurality of standing wall portions. And may be sandwiched between the standing wall portions.
  • the fitting plate portion is fitted between the plurality of standing wall portions and sandwiched between the standing wall portions, whereby the fitting plate portion is firmly fixed and the light source plate portion is attracted to the standing wall portion side. It will be. For this reason, the curvature of the light source substrate (light source mounting member) due to heat or the like can be further prevented or suppressed.
  • the connecting plate portion has a plate shape whose plate surface is along the plate surface of the plate-like portion, and the fitting plate portion and the light source plate portion are plate surfaces of the standing wall portion of the heat radiating plate. You may be along. According to this configuration, a specific configuration of the light source mounting member can be realized.
  • the fitting plate portion and the light source plate portion may have a plate surface thickness equivalent to a plate surface thickness of the standing wall portion. According to this configuration, the degree of fitting between the standing wall portion and the light source mounting member can be improved.
  • a part of the light source mounting member may be in contact with the bottom surface of the heat radiating plate. According to this configuration, heat generated in the light source mounting member is easily transmitted to the heat radiating plate side, so that heat dissipation can be improved.
  • Thermal radiation grease may be interposed between the standing wall portion and the light source mounting member. According to this configuration, heat can be more easily transferred from the light source mounting member to the standing wall portion, and the heat dissipation of the lighting device can be further enhanced.
  • the chassis may include a side plate that rises from an edge of the plate-like portion toward the one surface of the plate-like portion, and a part of the standing wall portion may be in contact with the side plate. According to this configuration, heat can be easily transferred from the heat sink to the chassis, and the heat dissipation of the lighting device can be further enhanced.
  • the technology disclosed in this specification can also be expressed as a display device including a display panel that performs display using light from the above-described lighting device.
  • a display device in which the display panel is a liquid crystal panel using liquid crystal is also new and useful.
  • a television receiver provided with the above display device is also new and useful.
  • FIG. 1 is an exploded perspective view of a television receiver TV according to Embodiment 1.
  • FIG. An exploded perspective view of the liquid crystal display device 10 is shown.
  • a cross-sectional view of the liquid crystal display device 10 is shown.
  • the top view which looked at the light source attachment member 30 fitted by the standing wall part 36b of the heat sink 36 from the front side is shown.
  • Sectional drawing showing the fitting method when fitting the light source attachment member 30 to the heat sink 36 is shown.
  • FIG. 3 shows a cross-sectional view of a liquid crystal display device 110 according to a second embodiment.
  • FIG. 6 shows a cross-sectional view of a liquid crystal display device 210 according to Embodiment 3.
  • Embodiment 1 will be described with reference to the drawings.
  • a part of each drawing shows an X-axis, a Y-axis, and a Z-axis, and each axis direction is drawn in a common direction in each drawing.
  • the Y-axis direction coincides with the vertical direction
  • the X-axis direction coincides with the horizontal direction.
  • the vertical direction is used as a reference for upper and lower descriptions.
  • 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.
  • FIG. 2 is an exploded perspective view of the liquid crystal display device 10.
  • the upper side shown in FIG. 2 is the front side, and the lower side is the back side.
  • the liquid crystal display device 10 has a horizontally long rectangular shape as a whole, and includes a liquid crystal panel 16 as a display panel and a backlight device 24 as an external light source, and these form a bezel having a frame shape. 12 and the like are integrally held.
  • the liquid crystal panel 16 has a configuration in which a pair of transparent (highly translucent) glass substrates are bonded together with a predetermined gap therebetween, and a liquid crystal layer (not shown) is enclosed between the glass substrates. Is done.
  • One glass substrate is provided with a switching element (for example, TFT) connected to a source wiring and a gate wiring orthogonal to each other, a pixel electrode connected to the switching element, an alignment film, and the like.
  • the substrate is provided with a color filter and counter electrodes in which colored portions such as R (red), G (green), and B (blue) are arranged in a predetermined arrangement, and an alignment film.
  • image data and various control signals necessary for displaying an image are supplied to a source wiring, a gate wiring, a counter electrode, and the like from a driving circuit board (not shown).
  • a polarizing plate (not shown) is disposed outside both glass substrates.
  • FIG. 3 shows a cross-sectional view of a cross section of the liquid crystal display device 10 cut along the vertical direction (Y-axis direction).
  • the backlight device 24 includes a frame 14, an optical member 18, and a chassis 22.
  • the frame 14 has a frame shape, is disposed along the edge side of the surface of the light guide plate 20 (light output surface 20b), and supports the liquid crystal panel 16 along the inner edge.
  • the optical member 18 is placed on the front side of the light guide plate 20 (the light exit surface 20b side).
  • the chassis 22 has a substantially box shape opened to the front side (light emission side, liquid crystal panel 16 side).
  • a pair of heat radiation plates 36, 36, a pair of LED (Light Emitting , Diode) units 32, 32, the reflection sheet 26, and the light guide plate 20 are accommodated.
  • Each of the pair of heat sinks 36 and 36 extends in the long side direction of the chassis 22 and has a substantially L-shaped cross section. A part of the heat sinks 36 and 36 abuts on both side plates 22 b and 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, are arranged on the long side of the chassis 22 and fitted to a part of the heat radiating plate 36, and Light is emitted toward the light incident surface 20a.
  • the longitudinal side surface (light incident surface) 20a of the light guide plate 20 is disposed at a position facing the LED units 32 and 32, and guides the light emitted from the LED unit 32 to the liquid crystal panel 16 side.
  • the optical member 18 is placed on the front side of the light guide plate 20.
  • the light guide plate 20 and the optical member 18 are arranged directly below the liquid crystal panel 16 and the LED unit 32 that is a light source is arranged at the side end of the light guide plate 20.
  • a so-called edge light system (side light system) is adopted.
  • the chassis 22 is made of a metal such as an aluminum-based material, for example, and has a bottom plate 22a having a rectangular shape in plan view, side plates 22b and 22c rising from outer edges of both long sides of the bottom plate 22a, and each of short sides of the bottom plate 22a. It consists of a side plate that rises from the outer edge.
  • a space facing the LED units 32, 32 in the chassis 22 is a housing space for the light guide plate 20.
  • a power circuit board (not shown) for supplying power to the LED unit 32 is attached to the back side of the bottom plate 22a.
  • the optical member 18 is formed by laminating a diffusion sheet 18a, a lens sheet 18b, and a reflective polarizing plate 18c in order from the light guide plate 20 side.
  • the diffusion sheet 18a, the lens sheet 18b, and the reflective polarizing plate 18c have a function of converting light emitted from the LED unit 32 and passing through the light guide plate 20 into planar light.
  • a liquid crystal panel 16 is installed on the upper surface side of the reflective polarizing plate 18 d, and the optical member 18 is disposed between the light guide plate 20 and the liquid crystal panel 16.
  • the LED unit 32 has a configuration in which LED light sources 28 that emit white light are arranged in a line in a portion of the light source mounting member 30 that faces the light incident surface 20a of the light guide plate 20.
  • the light source mounting member 30 is disposed in a state where a portion different from the portion where the LED light source 28 is disposed is fitted to a part of the heat radiating plate 36.
  • the configuration of the light source mounting member 30 will be described in detail later.
  • the LED light source 28 may emit white light by applying a phosphor having a light emission peak in a yellow region to a blue light emitting element.
  • the blue light emitting element may emit white light by applying a phosphor having emission peaks in the green and red regions.
  • a phosphor having a light emission peak in a green region may be applied to a blue light emitting element, and white light may be emitted by combining a red light emitting element.
  • 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.
  • a combination of an ultraviolet light emitting element and a phosphor may be used.
  • an ultraviolet light-emitting element may emit white light by applying a phosphor having emission peaks in blue, green, and red, respectively.
  • the light guide plate 20 is a rectangular plate-like member, is formed of a highly transparent (highly transparent) resin such as acrylic, is in contact with the reflective sheet 26 and is supported by the chassis 22. Yes. 2 and 3, the light guide plate 20 is a plate opposite to the light output surface 20b, with the light output surface 20b being the main plate surface facing the diffusion sheet 18a between the pair of LED units 32 and 32.
  • the opposite plate surface 20c which is a surface, is arranged so as to face the reflection sheet 26 side.
  • 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.
  • FIG. 4 shows a plan view of the light source mounting member 30 fitted to the standing wall portion 36b of the heat radiating plate 36 as viewed from the front side.
  • FIG. 5 is a cross-sectional view showing a fitting method when fitting the light source mounting member 30 to the heat radiating plate 36.
  • the pair of light source mounting members 30, 30 are arranged along the long side direction of the chassis 22 (see FIG. 2), have an inverted U-shape (a groove shape opening downward) as viewed in cross section, It is configured by bending the shaped member.
  • the light source mounting member 30 includes a light source plate portion 30a, a fitting plate portion 30c, and a connecting plate portion 30b (see FIG. 3).
  • the light source plate portion 30a of the light source mounting member 30 has a plate shape, and one plate surface thereof faces the light incident surface 20a of the light guide plate 20 in parallel.
  • a plurality of LED light sources 28 are arranged on a plate surface facing the light incident surface 20a.
  • the fitting plate portion 30c has a plate shape that can be fitted between two standing wall portions 36b and 36c to be described later, and is parallel to the light incident surface 20a of the light guide plate 20 like the light source plate portion 30a. It is arranged on the outer side of 30a (side plates 22b and 22c side of chassis 22) in a state of being separated from light source plate portion 30a.
  • the connecting plate portion 30b has a plate shape, is parallel to the bottom plate 22a of the chassis 22, and connects the light source plate portion 30a and the fitting plate portion 30c on the upper side.
  • the pair of heat radiating plates 36, 36 are members having heat radiating properties, are arranged along the long side direction of the chassis 22 (see FIG. 2), have an L shape in cross section, and have a bottom surface 36a. And two standing wall portions 36b and 36c (see FIG. 3).
  • the bottom surface portion 36 a is disposed in contact with the bottom plate 22 a along the plate surface of the bottom plate 22 a of the chassis 22. Further, the bottom surface portion 36a is affixed and fixed on the bottom plate 22a with, for example, an adhesive tape.
  • the two standing wall portions 36b and 36c rise from the bottom surface portion 36a toward the front side of the chassis 22 perpendicularly to the bottom surface portion 36a, and the plate surfaces thereof are parallel to the light incident surface 20a of the light guide plate 20. It has a plate shape. That is, the light source mounting member 30 has a shape in which a part thereof is bent by connecting the light source plate portion 30a and the fitting plate portion 30 by the connecting plate portion 30b.
  • One standing wall portion 36b of the heat radiating plate 36 is disposed between the light source plate portion 30a and the fitting plate portion 30c of the light source mounting member 30 and is sandwiched between the two plate portions 30a and 30c, and the top surface thereof is The contact plate 30b is in contact with the connection plate 30b (see FIGS. 3 and 4). Since the standing wall portion 36b is sandwiched in this way, the light source mounting plate portion 30a is in close contact with the standing wall portion 36b with almost no gap.
  • the other standing wall portion 36c rises from one edge of the bottom surface portion 36a (an edge located outside the chassis 22), and the outer surface abuts against the side plates 22b and 22c of the chassis 22, The inner surface is in contact with the fitting plate 30c.
  • the fitting plate portion 30c of the light source mounting member 30 is sandwiched between the two standing wall portions 36b and 36c, and the bottom surface thereof is in contact with the bottom surface portion 36a of the heat radiating plate 36. ing.
  • the thickness of the plate surface of the fitting plate part 30c and the light source plate part 30a of the light source mounting member 30 is equal to the thickness of the standing wall parts 36b and 36c of the heat sink 36.
  • the light source mounting member 30 and the heat radiating plate 36 are fitted, as shown in FIG.
  • the light source mounting member 30 is positioned so as to be positioned between the light source plate portion 36a and the fitting plate portion 36c. Then, the light source mounting member 30 is moved toward the heat radiating plate 36 (in the direction of the arrow in FIG. 5), and one standing wall portion 36b of the heat radiating plate 36 is placed between the light source plate portion 36a and the fitting plate portion 36c. Insert and insert until the top surface of the standing wall portion 36b contacts the connecting plate portion 30b. Thereafter, a predetermined position of the light source mounting member 30 is screwed to the heat radiating plate 36.
  • the standing wall portion 36b is sandwiched between the light source plate portion 36a and the fitting plate portion 36c, and the light source mounting member 30 is fitted to the heat radiating plate 36 without a gap. For this reason, the light source mounting member 30 and the heat radiating plate 36 come into contact with each other at a portion other than the portion fastened with a screw or the like, and the adhesion between them is increased.
  • heat radiation grease (not shown) is interposed between the standing wall portions 36b and 36c and the light source mounting member 30, so that heat generated in the light source mounting member 30 is easily transmitted to the heat radiation plate 36 side. , Heat dissipation is enhanced.
  • the one standing wall portion 36b is fitted between the bent shape of the light source mounting member 30 (between the light source plate portion 30a and the fitting plate portion 30c).
  • the light source plate portion 30a of the light source attachment member 30 comes into contact with the standing wall portion 36b on the surface while being held by the holding plate 36 at portions other than the portion where the light source attachment member 30 is fastened with screws or the like.
  • the adhesiveness with respect to the standing wall part 36b of the light source mounting member 30 increases compared with the case where the plate-shaped light source mounting member 30 is fastened to the standing wall part 36b only with a screw etc., it is a simple structure, heat etc. The warp of the light source mounting member 30 due to can be prevented or suppressed.
  • the light source mounting member 30 and the heat radiating plate 36 can be fitted to each other depending on the shape. For this reason, it is not necessary to provide a separate latching portion or the like for fitting the light source mounting member 30 with the holding plate 36, and further, it is necessary to provide a separate opening or the like for fitting the light source mounting member 30 to the light source mounting member 30. Nor. Therefore, it is possible to prevent or suppress warping of the light source mounting member 30 due to heat or the like with a simple configuration.
  • the light source mounting member 30 has the light source plate portion 30a and the fitting plate portion 30c, and the standing wall portion 36b of the heat radiating plate 36 is inserted between the both plate portions 30a and 30c.
  • the light source mounting member 30 and the heat sink 36 are fitted.
  • the contact area of the light source mounting member 30 with respect to the heat radiating plate 36 as compared with the configuration in which the light source mounting member 30 has only a plate-like member and the plate surface is mounted on the plate surface of the heat radiating plate 36. Will increase. Thereby, since heat is easily transmitted from the light source mounting member 30 to the heat radiating plate 36, heat dissipation of heat generated in the light source mounting member 30 can be enhanced.
  • two standing wall portions 36b and 36c are provided.
  • the light source mounting member 30 is configured by bending a plate-like member, and the fitting light source 30 is provided between the two standing wall portions 36b and 36c so as to be fitted, and the LED light source 28 is provided on one plate surface.
  • the light source plate portion 30a and the connection plate portion 30b for connecting the fitting plate portion 30c and the light source plate portion 30a, and the fitting plate portion 30c fit between the two standing wall portions 36b and 36c. Combined, it is sandwiched between the standing wall portions 36b and 36c.
  • the fitting plate portion 30c is fitted between the two standing wall portions 36b and 36c and is sandwiched between the standing wall portions 36b and 36c, whereby the fitting plate portion 30c is firmly fixed, and the light source plate portion 30a is attracted to the standing wall 36b side. For this reason, the curvature of the light source mounting member 30 due to heat or the like can be further prevented or suppressed.
  • the connecting plate portion 30b has a plate shape whose plate surface is along the plate surface of the bottom plate 22a. And the board surface of the fitting board part 30b and the light source board part 30a shall be along the board surface of the standing wall parts 30b and 30c of the heat sink 36. As shown in FIG. For this reason, the specific structure of the light source attachment member 30 is implement
  • the thickness of the fitting plate portion 30c and the light source plate portion 30a is equal to the thickness of the standing wall portions 36b and 36c. For this reason, the degree of fitting between the standing wall portions 36b and 36c and the light source mounting member 30 is good.
  • the backlight device 24 according to the present embodiment, a part of the light source mounting member 30 is in contact with the bottom surface portion 36 a of the heat radiating plate 36. Thereby, since the heat generated in the light source mounting member 30 is easily transmitted to the heat radiating plate 36 side, the heat dissipation of the backlight device 24 is enhanced.
  • heat radiation grease is interposed between the standing wall portions 36 b and 36 c and the light source mounting member 30. For this reason, heat can be more easily transferred from the light source mounting member 30 to the standing wall portions 36b and 36c, and the heat dissipation of the backlight device 24 can be further enhanced.
  • the chassis 22 includes side plates 22b and 22c that rise from the edge of the bottom plate 22a to the surface side of the bottom plate 22a, and a part of the standing wall portion 36c includes the side plates 22b and 22c. It is in contact. For this reason, heat can be easily transmitted from the heat sink 36 to the chassis 22, and the heat dissipation of the backlight device 24 can be further enhanced.
  • FIG. 6 is a cross-sectional view of the liquid crystal display device 110 according to the second embodiment.
  • the shape of a part of the light source mounting member 130 is different from that of the first embodiment. Since the other configuration is the same as that of the first embodiment, the description of the structure, operation, and effect is omitted.
  • the part obtained by adding the numeral 100 to the reference sign in FIG. 3 is the same as the part described in the first embodiment.
  • the upper surface of the connecting plate portion 130 b of the light source mounting member 130 is curved.
  • the uppermost portion of the curved surface is in contact with the frame 114.
  • the connecting plate portion 130b has a curved surface shape
  • the light source mounting member 130 is formed by fitting the standing wall portion 136b of the heat sink between the light source plate portion 130a and the fitting plate portion 130c. Since the light source plate part 130a comes into contact with the standing wall part 136b on the surface, the warp of the light source mounting member 130 due to heat or the like can be prevented or suppressed.
  • FIG. 7 is a cross-sectional view of the liquid crystal display device 210 according to the third embodiment.
  • the shape of the heat sink 236 is different from that of the first embodiment. Since the other configuration is the same as that of the first embodiment, the description of the structure, operation, and effect is omitted.
  • FIG. 7 the part obtained by adding the numeral 200 to the reference sign in FIG.
  • the heat radiating plate 236 has only one standing wall portion 236b.
  • the standing wall portion 236b is sandwiched between the light source plate portion 230a and the fitting plate portion 230c, and the bottom surface thereof is in contact with the bottom surface portion 236a of the heat radiating plate 36.
  • the heat sink 236 has only one standing wall 236b, the light source mounting member 230 is fitted to the heat sink 236.
  • the adhesion to the portion 236b is increased, and the warp of the light source mounting member 230 due to heat or the like can be prevented or suppressed with a simple configuration.
  • the LED light sources 28, 128, and 228 are examples of “light sources”. Further, the bottom plates 22a, 122a, and 222a are examples of the “plate portion”.
  • the backlight devices 24, 124, and 224 are examples of “illumination devices”.
  • the liquid crystal display devices 10, 110, and 210 are examples of the “display device”.
  • the light source mounting member exemplifies a configuration having the light source plate portion, the fitting plate portion, and the connecting plate portion, but the light source mounting member only needs to have a bent shape.
  • the shape of the light source mounting member is not limited.
  • the standing wall portion of the heat sink rises perpendicularly to the bottom surface portion
  • the standing wall portion may be a portion that rises from the bottom surface portion. It does not have to be vertical.
  • the shape, configuration, etc. of the light source mounting member can be changed as appropriate.
  • the shape, configuration, etc. of the heat sink can be changed as appropriate.
  • the television receiver provided with the tuner is exemplified, but the present invention can also be applied to a display device that does not include the tuner.
  • TV TV receiver, Ca, Cb: cabinet, T: tuner, S: stand, 10, 110, 210: liquid crystal display, 12, 112, 212: bezel, 14, 114, 214: frame, 16, 116, 216: liquid crystal panel, 18, 118, 218: optical member, 20, 120, 220: light guide plate, 20a, 120a, 220a: light incident surface, 20d, 120d, 220d: opposite side surface, 22, 122, 222: chassis, 24, 124, 224: Backlight device, 26, 126, 226: Reflective sheet, 28, 128, 228: LED light source, 30, 130, 230: Light source mounting member, 32, 132, 232: LED unit, 36, 136 236: Heat sink

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

Cette invention concerne un dispositif de rétroéclairage (24), comprenant : un boîtier (22) comprenant une plaque inférieure (22a) ; une plaque de guidage de lumière (20) disposée sur une surface de la plaque inférieure et présentant une surface d'admission de lumière (20a) ménagée dans sa surface latérale ; une source d'éclairage à DEL (28) disposée de manière à faire face à la surface d'admission de lumière (20a) ; une plaque rayonnante (36) disposée sur une surface de la plaque inférieure (22a) et présentant une surface inférieure (36a), s'étendant le long de la surface formant plaque de la plaque inférieure (22a), ainsi que deux parois verticales (36b, 36c) s'élevant à partir de la surface inférieure (36a) ; et un élément de fixation de source d'éclairage (30) auquel est fixée la source d'éclairage à DEL (28), ledit élément (30) présentant une forme courbe, et une paroi verticale (36b) étant adaptée dans la forme courbe.
PCT/JP2012/071400 2011-09-02 2012-08-24 Dispositif d'éclairage, dispositif d'affichage et dispositif récepteur de télévision WO2013031672A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011191500 2011-09-02
JP2011-191500 2011-09-02

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WO2013031672A1 true WO2013031672A1 (fr) 2013-03-07

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018043261A1 (fr) * 2016-09-05 2018-03-08 シャープ株式会社 Téléviseur et dispositif d'affichage
JP2018040851A (ja) * 2016-09-05 2018-03-15 シャープ株式会社 表示装置およびテレビジョン受信機
JP2018040850A (ja) * 2016-09-05 2018-03-15 シャープ株式会社 表示装置およびテレビジョン受信機
JP2018040853A (ja) * 2016-09-05 2018-03-15 シャープ株式会社 表示装置およびテレビジョン受信機

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007193946A (ja) * 2006-01-17 2007-08-02 Nippon Seiki Co Ltd 発光装置
JP2007311327A (ja) * 2006-04-20 2007-11-29 Mitsubishi Electric Corp 面状光源装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007193946A (ja) * 2006-01-17 2007-08-02 Nippon Seiki Co Ltd 発光装置
JP2007311327A (ja) * 2006-04-20 2007-11-29 Mitsubishi Electric Corp 面状光源装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018043261A1 (fr) * 2016-09-05 2018-03-08 シャープ株式会社 Téléviseur et dispositif d'affichage
JP2018040851A (ja) * 2016-09-05 2018-03-15 シャープ株式会社 表示装置およびテレビジョン受信機
JP2018040850A (ja) * 2016-09-05 2018-03-15 シャープ株式会社 表示装置およびテレビジョン受信機
JP2018040853A (ja) * 2016-09-05 2018-03-15 シャープ株式会社 表示装置およびテレビジョン受信機

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