WO2011118620A1 - Light source device, display device, and television receiver - Google Patents

Light source device, display device, and television receiver Download PDF

Info

Publication number
WO2011118620A1
WO2011118620A1 PCT/JP2011/056952 JP2011056952W WO2011118620A1 WO 2011118620 A1 WO2011118620 A1 WO 2011118620A1 JP 2011056952 W JP2011056952 W JP 2011056952W WO 2011118620 A1 WO2011118620 A1 WO 2011118620A1
Authority
WO
WIPO (PCT)
Prior art keywords
light source
guide plate
light guide
light
chassis
Prior art date
Application number
PCT/JP2011/056952
Other languages
French (fr)
Japanese (ja)
Inventor
広明 原
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 WO2011118620A1 publication Critical patent/WO2011118620A1/en

Links

Images

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
    • 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 light source device that emits light through a light guide plate, a display device including the light source device, and a television receiver including the display device.
  • Liquid crystal display devices that occupy a small indoor area compared to the size of the display screen are widely used because they can effectively use a limited indoor space.
  • the liquid crystal display device is configured to display an image by irradiating light from a light source device housed in the rear cabinet to a liquid crystal display panel that displays an image arranged inside the front cabinet.
  • the light source used in the light source device includes a cold cathode fluorescent tube or an LED (Light Emitting Diode). Since LEDs can control brightness more closely than cold cathode fluorescent tubes, many liquid crystal display devices using LEDs as light sources have been proposed (for example, Patent Document 1).
  • the light source device using the LED makes the LED light enter from the side of the light guide plate by causing the LED to face the edge portion of the light guide plate, diffusely reflects inside the light guide plate, and irradiates the front side.
  • the LED When the LED emits light, heat is generated from the LED.
  • the LED is mounted on an LED substrate, and the LED substrate is fixed to the chassis of the light source device via a heat dissipation member. Therefore, the heat generated in the LED is conducted to the chassis through the LED substrate and the heat dissipation member and released.
  • the present invention has been made in view of such circumstances, and an object thereof is to provide a light source device, a display device, and a television receiver capable of efficiently releasing heat generated by a light source.
  • the light source device is a light source device including a light source that emits light toward the light guide plate and a chassis that supports the light source, and the chassis has a flat plate shape with one surface facing the light guide plate,
  • the chassis includes a projecting portion projecting to the other surface side, and supports the light source on one surface side of the projecting portion.
  • the heat radiation path is shortened and efficient heat radiation is realized. Further, by directly fixing the light source to the chassis, the number of screws used for fixing is reduced as compared with the case of fixing to the chassis via the heat radiating member, and the production efficiency is improved.
  • the light source faces one surface of the light guide plate, and an inclined surface having a thickness dimension on the edge side shorter than that of the central portion is formed on the edge of the other surface of the light guide plate. It is characterized by being.
  • the heat dissipating part faces the edge of the light guide plate in a state of facing the light guide plate, and the horizontal width or vertical width of the light source device is shorter than when the light source faces the side surface of the light guide plate. Become. Further, the light emitted from the light source while facing the light guide plate is reflected by the inclined surface by the inclined surface formed at the edge of the light guide plate, and is guided to the inside of the light guide plate.
  • the light source device is characterized in that the inclined surface is mirror-finished.
  • the light emitted from the light source while facing the light guide plate is reliably reflected by the inclined surface.
  • the light source device is characterized in that the protruding portion is formed in a concave shape that is recessed toward the side away from the light guide plate, and the light source is supported at a recessed portion of the protruding portion. To do.
  • the light guide plate is close to the chassis, and no unnecessary gap is generated in the direction perpendicular to the light guide plate.
  • a through hole is provided in the chassis, the projecting portion is opposed to the light guide plate through the through hole, and the light source is located inside the through hole. It is characterized by.
  • the light source by inserting the light source into the through hole from the side opposite to the light guide plate, the light source is positioned inside the through hole and close to the edge portion of the light guide plate.
  • the chassis has a flat plate shape facing the light guide plate, the chassis extends around the light guide plate, and extends around the light guide plate in the chassis.
  • a through hole is provided in the portion, and the protruding portion protrudes from the through hole.
  • the light source is positioned between the heat radiation part and the side surface of the light guide plate, and the light emitted from the light source surely enters the inside of the light guide plate from the side surface of the light guide plate.
  • the light source device is characterized in that the light source includes an LED.
  • the amount of heat generated is suppressed by using an LED as the light source as compared with the case of using a cold cathode fluorescent tube.
  • a display device includes any one of the light source devices described above and a display unit that transmits light emitted from the light source device.
  • a television receiver includes the above-described display device and a tuner that receives broadcast waves.
  • the display device described above can be used for a television receiver. It is particularly suitable for a television receiver with a large screen.
  • the heat radiation path can be shortened and efficient heat radiation can be realized by supporting the light source on the heat radiation portion provided in the chassis. Further, by directly fixing the light source to the chassis, the number of screws used for fixing can be reduced as compared with the case of fixing to the chassis via the heat radiating member, and the production efficiency can be improved.
  • FIG. 3 is a schematic front view of the display device according to Embodiment 1.
  • FIG. 2 is a schematic plan cross-sectional view of the display device according to Embodiment 1.
  • FIG. 6 is a schematic plan cross-sectional view of a display device according to Embodiment 2.
  • FIG. 10 is a schematic plan sectional view of a display device according to Embodiment 3.
  • FIG. It is a block diagram which briefly shows a television receiver.
  • FIG. 1 is a schematic front view of the display device 110.
  • reference numeral 1 denotes a rectangular display panel including a liquid crystal
  • the display panel 1 is configured to control the voltage applied to the liquid crystal to adjust the light transmittance.
  • the peripheral edge of the display panel 1 is sandwiched between a front holding frame 2 and a rear holding frame 3 (see FIG. 2 described later), and is accommodated in a rectangular frame-shaped front cabinet (not shown). Yes.
  • the front cabinet is disposed around the front holding frame 2 and the rear holding frame 3.
  • the front cabinet has a rectangular opening, and the dimensions of the opening correspond to the display panel 1.
  • FIG. 2 is a schematic plan sectional view of the display device 110.
  • a light source device 100 is provided on the rear side of the display panel 1, and the light source device 100 includes a rectangular light guide plate 4 facing the display panel 1.
  • a rectangular diffusion plate 6 that uniformly diffuses the light emitted from the light guide plate 4 and the light diffused by the diffusion plate 6 are displayed on the front side of the light guide plate 4.
  • a rectangular optical sheet 5 that collects light toward the panel 1 is provided in order. Note that the vertical and horizontal dimensions of the light guide plate 4 are larger than those of the optical sheet 5 and the diffusion plate 6.
  • a flat chassis 9 is provided on the rear side of the light guide plate 4, and the chassis 9 and the light guide plate 4 face each other.
  • the vertical dimension and the horizontal dimension of the chassis 9 are larger than those of the light guide plate 4.
  • a recessed portion (projecting portion) 90 that is recessed to the rear side is formed in a portion of the chassis 9 that faces the left and right edges of the light guide plate 4, and the recessed portion 90 projects to the rear side.
  • the recess 90 is located in the vicinity of the edge of the chassis 9. The edge of the chassis 9 protrudes forward.
  • an inclined surface 40 On the front surface of the left and right edge portions of the light guide plate 4, an inclined surface 40 whose front and rear dimensions (thickness dimensions) on the edge side are shorter than those on the center side is formed.
  • the inclination angle of the inclined surface 40 is set to an angle suitable for reflecting light from the light source 8 described later toward the inside of the light guide plate 4.
  • the inclined surface 40 is mirror-finished.
  • the mirror surface processing is realized by polishing, for example.
  • Reinforcing rods 7 and 7 for reinforcing the display device 110 are separately provided on the left and right sides of the display device 110 between the inclined surface 40 and the edge of the chassis 9 protruding forward.
  • a spacer 10 is provided between the reinforcing rod 7 and the rear holding frame 3. The spacer 10 extends toward the light guide plate 4 at a position in front of the light guide plate 4. The extended portion of the spacer 10 protrudes rearward, and the front and rear positions of the protruding end of the spacer 10 are substantially the same as the front surface of the light guide plate 4.
  • the light guide plate 4 is sandwiched between the spacer 10 and the chassis 9.
  • the reinforcement rod 7 is sandwiched between the spacer 10 and the chassis 9.
  • a hook-like locking groove 70 in a plan view is formed on the inclined surface 40 side of the reinforcing rod 7.
  • the locking groove 70 is parallel to the front surface of the light guide plate 4 and has a front and back position that is substantially the same as the front surface of the light guide plate 4 and a rear surface of the light guide plate 4.
  • the front and rear dimensions of the connecting surface 73 are substantially the same as the front and rear dimensions of the light guide plate 4.
  • the left and right edge portions of the light guide plate 4 are inserted into the locking grooves 70.
  • the light guide plate 4 is locked between the locking front surface 71 and the locking rear surface 72.
  • the left and right dimensions and left and right positions of the locking front surface 71 and the locking rear surface 72 are such that when the light guide plate 4 is inserted into the locking groove 70, the front edge of the light guide plate 4 faces the locking front surface 71.
  • 4 is designed such that the edge of the rear surface faces the rear surface 72 of the latch.
  • a plurality of light sources 8 are provided inside the recess 90, and the light source 8 includes an LED substrate 8a and an LED 8b mounted on the LED substrate 8a.
  • the LED substrate 8a is fixed to the bottom surface of the recess 90 with a screw (not shown).
  • the LED 8 b is mounted on the front surface of the LED substrate 8 a and faces the edge portion of the light guide plate 4. LED8b is facing the center part of the inclined surface 40 in the left-right direction.
  • the front-rear dimension of the light source 8 is shorter than the dimension between the bottom surface of the recess 90 and the rear surface of the light guide plate 4.
  • a box-shaped rear cabinet (not shown) that engages with the front cabinet is disposed on the rear side of the chassis 9, and the rear cabinet accommodates the light guide plate 4 and the chassis 9.
  • the heat generated by the light emission of the LED 8b is conducted to the recess 90 through the LED substrate 8a and is released to the outside.
  • the light emitted from the LED 8 b enters the light guide plate 4 from the rear side, is reflected by the inclined surface 40 that has been mirror-finished, and is centered in the left-right direction of the light guide plate 4. Proceed toward.
  • the heat dissipation path can be shortened and efficient heat dissipation can be realized.
  • the surface area of the recessed part 90 is large compared with the case where it is formed flat, and can improve the efficiency of heat dissipation.
  • the number of screws used for fixing can be reduced as compared with the case of fixing to the chassis 9 via a heat radiating member, and the production efficiency can be improved.
  • the concave portion 90 faces the edge of the light guide plate 4 in a state of facing the light guide plate 4, and the lateral width of the light source device 100 is shorter than when the light source 8 faces the left and right side surfaces of the light guide plate 4.
  • the display device 110 can be downsized and the frame of the display device 110 can be narrowed.
  • the light emitted from the light source 8 while facing the light guide plate 4 is reflected by the inclined surface 40 and guided to the inside of the light guide plate 4 by the inclined surface 40 formed at the edge of the light guide plate 4. Further, by applying a mirror finish to the inclined surface 40, the light emitted from the light source 8 can be reliably reflected by the inclined surface 40, and light leakage can be prevented. Further, by using the LED 8b, it is possible to suppress the amount of heat generated at the time of light emission compared to the case of using a cold cathode fluorescent tube.
  • the light guide plate 4 is close to the chassis 9, and it is possible to avoid unnecessary gaps in the direction perpendicular to the light guide plate 4 (front-rear direction). Therefore, enlargement of the light source device 100 and the display device 110 can be prevented.
  • the light source 8 faces the rear surface of the light guide plate 4, and even if the light guide plate 4 is thermally expanded in the left-right direction, the light guide plate 4 does not contact the LED 8b. Therefore, the malfunction of lighting of LED8b by the contact of the light-guide plate 4 does not generate
  • the light sources 8 are arranged on the left and right sides, but inclined surfaces may be formed on the upper and lower side surfaces of the light guide plate 4 and the light sources 8 may be arranged on the upper and lower sides. .
  • the vertical width of the light source device 100 is shorter than when the light source 8 faces the upper and lower side surfaces of the light guide plate 4.
  • FIG. 3 is a schematic plan sectional view of the display device 110. In FIG. 3, only the right side portion of the display device 110 is displayed.
  • through holes 91 are formed in portions facing the left and right edges of the light guide plate 4, and the through holes 91 are located in the vicinity of the edges of the chassis 9.
  • a concave heat radiating portion (projecting portion) 92 is disposed on the rear side of the through hole 91, and a recessed portion of the heat radiating portion 92 faces the light guide plate 4 through the through hole 91.
  • the heat radiating portion 92 is fixed to the rear surface of the chassis 9 with screws 93 so as to close the through holes 91.
  • the heat radiating portion 92 protrudes rearward from the rear surface of the chassis 9.
  • the light source 8 is provided in a portion of the heat radiating portion 92 that faces the through hole 91.
  • the LED substrate 8 a is fixed to a recessed portion of the heat radiating portion 92.
  • the LED 8 b is located inside the through hole 92. Further, the LED 8b faces the central portion of the inclined surface 40 in the left-right direction.
  • the vertical dimension and the horizontal dimension of the light source 8 are smaller than the diameter of the through hole 91, and the longitudinal dimension of the light source 8 is smaller than the axial dimension of the through hole 91.
  • the heat generated by the light emission of the LED 8b is conducted to the heat radiating portion 92 via the LED substrate 8a and released to the outside. As shown by the arrow in FIG. 3, the light emitted from the LED 8 b enters the light guide plate 4 from the rear side, is reflected by the inclined surface 40 that is mirror-finished, and is centered in the left-right direction of the light guide plate 4. Proceed toward.
  • the light source 8 is located inside the through hole 91 by inserting the light source 8 into the through hole 91 from the rear side of the light guide plate 4. Proximity to the edge of the optical plate 4.
  • the light emitted from the light source 8 can be given directivity in the forward direction, and from the light source 8 by approaching the edge portion of the light guide plate 4.
  • the irradiated light can be immediately guided to the light guide plate 4.
  • the light source 8 can be replaced by removing the heat radiating portion 92 from the rear side, it is not necessary to remove the display panel 1 for replacing the light source 8, and the maintenance and replacement of the light source 8 can be easily performed.
  • the design of the heat radiating portion 92 can be easily changed, such as changing the size of the heat radiating portion 92 in the front-rear direction or changing to a fin shape.
  • the display device 110 can be both reduced in size and efficiently radiated.
  • the light source 8 faces the rear surface of the light guide plate 4, and even if the light guide plate 4 is thermally expanded in the left-right direction, the light guide plate 4 does not contact the LED 8b. Therefore, the malfunction of lighting of LED8b by the contact of the light-guide plate 4 does not generate
  • FIG. 4 is a schematic plan sectional view of the display device 110. In FIG. 4, only the right side portion of the display device 110 is displayed.
  • a through hole 95 is formed in the chassis 9 at a position on the right side or the left side of the light guide plate 4.
  • the through hole 95 is close to the right side surface or the left side surface of the light guide plate 4.
  • An L-shaped heat radiation part (projection part) 96 in a plan view is inserted into the through hole 95 from the rear side.
  • the heat radiating portion 96 includes an extending portion 96a that is inserted into the through hole 95 and extends forward, and a right-angle portion 96b that is continuous with the extending portion 96a and is perpendicular to the extending portion 96a.
  • the extending portion 96 a is inserted into the through hole 95 so as to be close to the right side surface or the left side surface of the light guide plate 4, and is in contact with the inner side surface of the through hole 95.
  • the right angle portion 96 b is located behind the through hole 95 and protrudes in a direction away from the light guide plate 4.
  • the extending width of the right-angled part 96 b is larger than the diameter of the through hole 95 and closes the through hole 95.
  • the right angle portion 96 b faces the rear surface of the chassis 9 and is fixed to the rear surface of the chassis 9 with screws 97.
  • the light source 8 is provided in the extending part 96a.
  • the LED substrate 8a of the light source 8 is fixed to the extending portion 96a.
  • the LED 8b of the light source 8 faces the central portion of the right side surface or the left side surface of the light guide plate 4 in the front-rear direction.
  • the heat generated by the light emission of the LED 8b is conducted to the heat radiating portion 96 through the LED substrate 8a, and is released to the outside from the right angle portion 96b. As indicated by the arrows in FIG. 4, the light emitted from the LED 8 b enters the right side surface or the left side surface of the light guide plate 4 and travels toward the center in the left-right direction of the light guide plate 4.
  • the light source is located between the heat radiation part 96 and the right side surface or the left side surface of the light guide plate 4, and the light emitted from the light source 8 is the light guide plate. 4 reliably enters the light guide plate from the right side surface or the left side surface.
  • the design of the heat radiating unit 96 can be easily changed, such as changing the size of the heat radiating unit 96 in the front-rear direction or changing to a fin shape.
  • the display device 110 can be both reduced in size and efficiently radiated.
  • the light source 8 in the first to third embodiments includes the LED 8b
  • the light source 8 may include other light emitting elements such as an LD (Laser Diode), a fluorescent tube, and an incandescent bulb instead of the LED 8b.
  • LD Laser Diode
  • the display device 110 may be used for the television receiver 200.
  • FIG. 5 is a block diagram schematically showing the television receiver 200.
  • the television receiver 200 includes a tuner 201 that receives broadcast waves from an antenna 300, a decoder 202 that decodes encoded broadcast waves, and a display device 110.
  • the television receiver 200 decodes the broadcast wave received by the tuner 201 by the decoder 202 and displays an image on the display device 110 based on the decoded information.
  • the display device 110 since the display device 110 can be both reduced in size and efficiently radiated, the display device 110 is suitably used for the television receiver 200 having a large screen.
  • Display panel (display section) 4 Light guide plate 40 Inclined surface 8 Light source 8a LED substrate 8b LED 9 Chassis 90 Recess (projection) 91, 95 Through hole 92, 96 Heat radiation part (protrusion part) DESCRIPTION OF SYMBOLS 100 Light source device 110 Display apparatus 200 Television receiver 201 Tuner

Abstract

Disclosed is a light source device capable of efficiently releasing the heat generated by a light source. Also disclosed are a display device and a television receiver. By supporting the light source (8) in a depression (90) provided in a chassis (9), the heat dissipation path can be shortened and efficient heat dissipation can be realized. In addition, by directly fixing the light source (8) onto the chassis (9), the number of screws used for fixing can be reduced in comparison to cases in which the light source is fixed to the chassis (9) with a heat dissipating member therebetween, and production efficiency can be improved.

Description

光源装置、表示装置及びテレビ受信装置Light source device, display device, and television receiver
　本発明は導光板を介して光を照射する光源装置、該光源装置を備える表示装置及び該表示装置を備えるテレビ受信装置に関する。 The present invention relates to a light source device that emits light through a light guide plate, a display device including the light source device, and a television receiver including the display device.
　表示画面の大きさに比べて室内の占有面積が小さい液晶表示装置は、限られた室内空間を有効に利用することができることから、一般に広く普及している。液晶表示装置は、前キャビネットの内側に配置された映像を表示する液晶表示パネルに、後キャビネットに収容してある光源装置の光を照射して、映像を表示するように構成されている。 Liquid crystal display devices that occupy a small indoor area compared to the size of the display screen are widely used because they can effectively use a limited indoor space. The liquid crystal display device is configured to display an image by irradiating light from a light source device housed in the rear cabinet to a liquid crystal display panel that displays an image arranged inside the front cabinet.
　光源装置に使用される光源としては、冷陰極蛍光管又はＬＥＤ(Light Emitting Diode)が挙げられる。ＬＥＤは冷陰極蛍光管に比べて輝度の制御を綿密に行うことができるため、光源にＬＥＤを使用した液晶表示装置が多く提案されようになってきている（例えば特許文献１）。ＬＥＤを使用する光源装置は、ＬＥＤを導光板の縁部分に対向させることによって、導光板の側方からＬＥＤの光を進入させて、導光板の内部にて乱反射させ、前側へ照射する。 The light source used in the light source device includes a cold cathode fluorescent tube or an LED (Light Emitting Diode). Since LEDs can control brightness more closely than cold cathode fluorescent tubes, many liquid crystal display devices using LEDs as light sources have been proposed (for example, Patent Document 1). The light source device using the LED makes the LED light enter from the side of the light guide plate by causing the LED to face the edge portion of the light guide plate, diffusely reflects inside the light guide plate, and irradiates the front side.
　ＬＥＤが発光した場合、ＬＥＤから熱が発生する。ＬＥＤはＬＥＤ基板に実装されており、該ＬＥＤ基板は放熱部材を介して光源装置のシャーシに固定してある。そのためＬＥＤで発生した熱は、ＬＥＤ基板及び放熱部材を介してシャーシに伝導し、放出される。 When the LED emits light, heat is generated from the LED. The LED is mounted on an LED substrate, and the LED substrate is fixed to the chassis of the light source device via a heat dissipation member. Therefore, the heat generated in the LED is conducted to the chassis through the LED substrate and the heat dissipation member and released.
特開２００８－８９９４４号公報JP 2008-89944 A
　しかしＬＥＤ基板と放熱部材との間及び放熱部材とシャーシとの間には、隙間が発生し易く、二つの隙間によって熱伝導が著しく妨げられ、効率良く熱を放出することができないという問題があった。 However, there is a problem that a gap is easily generated between the LED substrate and the heat radiating member and between the heat radiating member and the chassis, and heat conduction is remarkably hindered by the two gaps, so that heat cannot be efficiently released. It was.
　本発明は斯かる事情に鑑みてなされたものであり、光源にて発生した熱を効率良く放出することができる光源装置、表示装置及びテレビ受信装置を提供することを目的とする。 The present invention has been made in view of such circumstances, and an object thereof is to provide a light source device, a display device, and a television receiver capable of efficiently releasing heat generated by a light source.
　本発明に係る光源装置は、導光板に向けて光を出射する光源と、該光源を支持するシャーシとを備える光源装置において、前記シャーシは、一面が前記導光板と対面する平板状をなし、前記シャーシは他面側に突出する突出部を備え、前記突出部の一面側にて前記光源を支持していることを特徴とする。 The light source device according to the present invention is a light source device including a light source that emits light toward the light guide plate and a chassis that supports the light source, and the chassis has a flat plate shape with one surface facing the light guide plate, The chassis includes a projecting portion projecting to the other surface side, and supports the light source on one surface side of the projecting portion.
　本発明においては、シャーシが備える突出部に光源を直接支持することで、放熱経路の短縮を図り、効率的な放熱を実現する。また光源をシャーシに直接固定することによって、固定に使用するビスの数は、放熱部材を介してシャーシに固定する場合に比べて削減され、生産効率は向上する。 In the present invention, by directly supporting the light source on the protruding portion provided in the chassis, the heat radiation path is shortened and efficient heat radiation is realized. Further, by directly fixing the light source to the chassis, the number of screws used for fixing is reduced as compared with the case of fixing to the chassis via the heat radiating member, and the production efficiency is improved.
　本発明に係る光源装置は、前記光源は前記導光板の一面に対向し、前記導光板の他面における縁部に、該縁部側の厚さ寸法が中央部側よりも短い傾斜面を形成してあることを特徴とする。 In the light source device according to the present invention, the light source faces one surface of the light guide plate, and an inclined surface having a thickness dimension on the edge side shorter than that of the central portion is formed on the edge of the other surface of the light guide plate. It is characterized by being.
　本発明においては、放熱部は、導光板に対面した状態で導光板の縁部に対向しており、光源装置の横幅又は縦幅は、導光板の側面に光源を対面させる場合に比べて短くなる。また導光板の縁部に形成された傾斜面によって、導光板に対面した状態で光源から出射された光は傾斜面で反射し、導光板の内部に導かれる。 In the present invention, the heat dissipating part faces the edge of the light guide plate in a state of facing the light guide plate, and the horizontal width or vertical width of the light source device is shorter than when the light source faces the side surface of the light guide plate. Become. Further, the light emitted from the light source while facing the light guide plate is reflected by the inclined surface by the inclined surface formed at the edge of the light guide plate, and is guided to the inside of the light guide plate.
　本発明に係る光源装置は、前記傾斜面には鏡面加工が施してあることを特徴とする。 The light source device according to the present invention is characterized in that the inclined surface is mirror-finished.
　本発明においては、傾斜面に鏡面加工を施すことによって、導光板に対面した状態で光源から出射された光は傾斜面で確実に反射する。 In the present invention, by applying a mirror finish to the inclined surface, the light emitted from the light source while facing the light guide plate is reliably reflected by the inclined surface.
　本発明に係る光源装置は、前記突出部は、前記導光板から離反する側に窪んだ凹形に形成されており、前記突出部の窪んだ箇所に前記光源を支持していることを特徴とする。 The light source device according to the present invention is characterized in that the protruding portion is formed in a concave shape that is recessed toward the side away from the light guide plate, and the light source is supported at a recessed portion of the protruding portion. To do.
　本発明においては、凹型の放熱部の内側に光源を支持することによって、導光板はシャーシに近接し、導光板に垂直な方向に不要な隙間が発生しない。 In the present invention, by supporting the light source inside the concave heat radiating portion, the light guide plate is close to the chassis, and no unnecessary gap is generated in the direction perpendicular to the light guide plate.
　本発明に係る光源装置は、前記シャーシに貫通孔を設けてあり、前記突出部は、前記貫通孔を介して前記導光板に対向しており、前記光源は前記貫通孔の内側に位置することを特徴とする。 In the light source device according to the present invention, a through hole is provided in the chassis, the projecting portion is opposed to the light guide plate through the through hole, and the light source is located inside the through hole. It is characterized by.
　本発明においては、導光板と反対側から光源を貫通孔に挿入することによって、光源は貫通孔の内側に位置し、導光板の縁部分に近接する。 In the present invention, by inserting the light source into the through hole from the side opposite to the light guide plate, the light source is positioned inside the through hole and close to the edge portion of the light guide plate.
　本発明に係る光源装置は、前記シャーシは、前記導光板と対面する平板状をなし、前記シャーシは、前記導光板の周囲に延出しており、前記シャーシにおける前記導光板の周囲に延出した部分に貫通孔を設けてあり、前記突出部は前記貫通孔から突出していることを特徴とする。 In the light source device according to the present invention, the chassis has a flat plate shape facing the light guide plate, the chassis extends around the light guide plate, and extends around the light guide plate in the chassis. A through hole is provided in the portion, and the protruding portion protrudes from the through hole.
　本発明においては、光源は放熱部と導光板の側面との間に位置し、光源から出射された光は導光板の側面から導光板の内部に確実に進入する。 In the present invention, the light source is positioned between the heat radiation part and the side surface of the light guide plate, and the light emitted from the light source surely enters the inside of the light guide plate from the side surface of the light guide plate.
　本発明に係る光源装置は、前記光源はＬＥＤを備えることを特徴とする。 The light source device according to the present invention is characterized in that the light source includes an LED.
　本発明においては、光源にＬＥＤを使用することによって、冷陰極蛍光管を使用する場合に比べて、発熱量を抑制する。 In the present invention, the amount of heat generated is suppressed by using an LED as the light source as compared with the case of using a cold cathode fluorescent tube.
　本発明に係る表示装置は、前述したいずれかの光源装置と、該光源装置から照射された光を透過する表示部とを備えることを特徴とする。 A display device according to the present invention includes any one of the light source devices described above and a display unit that transmits light emitted from the light source device.
　本発明においては、前述した光源装置を表示装置に使用することによって、効率的な放熱を実現する。 In the present invention, efficient heat dissipation is realized by using the light source device described above for a display device.
　本発明に係るテレビ受信装置は、前述した表示装置と、放送波を受信するチューナとを備えることを特徴とする。 A television receiver according to the present invention includes the above-described display device and a tuner that receives broadcast waves.
　本発明においては、前述した表示装置をテレビ受信装置に使用することができる。特に大型画面のテレビ受信装置に適している。 In the present invention, the display device described above can be used for a television receiver. It is particularly suitable for a television receiver with a large screen.
　本発明に係る光源装置、表示装置及びテレビ受信装置にあっては、シャーシが備える放熱部に光源を支持することによって、放熱経路の短縮を図り、効率的な放熱を実現することができる。また光源をシャーシに直接固定することによって、固定に使用するビスの数は、放熱部材を介してシャーシに固定する場合に比べて削減され、生産効率を向上させることができる。 In the light source device, the display device, and the television receiver according to the present invention, the heat radiation path can be shortened and efficient heat radiation can be realized by supporting the light source on the heat radiation portion provided in the chassis. Further, by directly fixing the light source to the chassis, the number of screws used for fixing can be reduced as compared with the case of fixing to the chassis via the heat radiating member, and the production efficiency can be improved.
実施の形態１に係る表示装置の略示正面図である。3 is a schematic front view of the display device according to Embodiment 1. FIG. 実施の形態１に係る表示装置の略示平面断面図である。2 is a schematic plan cross-sectional view of the display device according to Embodiment 1. FIG. 実施の形態２に係る表示装置の略示平面断面図である。6 is a schematic plan cross-sectional view of a display device according to Embodiment 2. FIG. 実施の形態３に係る表示装置の略示平面断面図である。10 is a schematic plan sectional view of a display device according to Embodiment 3. FIG. テレビ受信装置を略示するブロック図である。It is a block diagram which briefly shows a television receiver.
　（実施の形態１）
　以下本発明を実施の形態１に係る光源装置１００及び該光源装置１００を備える表示装置１１０を示す図面に基づいて詳述する。図１は表示装置１１０の略示正面図である。 (Embodiment 1)
Hereinafter, the present invention will be described in detail with reference to the drawings showing a light source device 100 according to Embodiment 1 and a display device 110 including the light source device 100. FIG. 1 is a schematic front view of the display device 110.
　図において１は液晶を備える矩形の表示パネルであり、該表示パネル１は、液晶への印加電圧を制御して光の透過率を調整するように構成されている。表示パネル１は、前保持枠体２と後保持枠体３（後述する図２参照）とによって、その周縁部が挟持されており、矩形枠状の前キャビネット（図示せず）に収容されている。前キャビネットは前保持枠体２及び後保持枠体３の周囲に配置されている。前キャビネットは矩形の開口を備えており、該開口の寸法は表示パネル１に対応した寸法となっている。 In the figure, reference numeral 1 denotes a rectangular display panel including a liquid crystal, and the display panel 1 is configured to control the voltage applied to the liquid crystal to adjust the light transmittance. The peripheral edge of the display panel 1 is sandwiched between a front holding frame 2 and a rear holding frame 3 (see FIG. 2 described later), and is accommodated in a rectangular frame-shaped front cabinet (not shown). Yes. The front cabinet is disposed around the front holding frame 2 and the rear holding frame 3. The front cabinet has a rectangular opening, and the dimensions of the opening correspond to the display panel 1.
　図２は表示装置１１０の略示平面断面図である。なお図２には表示装置１１０の右側部分のみ表示されている。
　表示パネル１の後側には光源装置１００が設けてあり、該光源装置１００は表示パネル１に対向する矩形の導光板４を備えている。導光板４と表示パネル１との間において、導光板４の前側に、導光板４から出射された光を均一に拡散する矩形の拡散板６と、該拡散板６によって拡散された光を表示パネル１へ向けて集光する矩形の光学シート５とが順に設けてある。なお導光板４の縦寸法及び横寸法は、光学シート５及び拡散板６よりも大きい。 FIG. 2 is a schematic plan sectional view of the display device 110. In FIG. 2, only the right side portion of the display device 110 is displayed.
A light source device 100 is provided on the rear side of the display panel 1, and the light source device 100 includes a rectangular light guide plate 4 facing the display panel 1. Between the light guide plate 4 and the display panel 1, a rectangular diffusion plate 6 that uniformly diffuses the light emitted from the light guide plate 4 and the light diffused by the diffusion plate 6 are displayed on the front side of the light guide plate 4. A rectangular optical sheet 5 that collects light toward the panel 1 is provided in order. Note that the vertical and horizontal dimensions of the light guide plate 4 are larger than those of the optical sheet 5 and the diffusion plate 6.
　導光板４の後側に平板状のシャーシ９が設けてあり、該シャーシ９と導光板４とは対面している。シャーシ９の縦寸法及び横寸法は導光板４よりも大きい。シャーシ９における導光板４の左右の縁部に対向する部分に、後側に窪んだ凹部（突出部）９０が形成してあり、該凹部９０は、後側に突出している。また凹部９０は、シャーシ９の縁部の近傍に位置する。シャーシ９の縁部は前側に突出している。 A flat chassis 9 is provided on the rear side of the light guide plate 4, and the chassis 9 and the light guide plate 4 face each other. The vertical dimension and the horizontal dimension of the chassis 9 are larger than those of the light guide plate 4. A recessed portion (projecting portion) 90 that is recessed to the rear side is formed in a portion of the chassis 9 that faces the left and right edges of the light guide plate 4, and the recessed portion 90 projects to the rear side. The recess 90 is located in the vicinity of the edge of the chassis 9. The edge of the chassis 9 protrudes forward.
　導光板４の左右の縁部における前面には、縁部側の前後寸法（厚さ寸法）が中央部側よりも短い傾斜面４０が形成してある。該傾斜面４０の傾斜角は、後述する光源８からの光を導光板４の内部に向けて反射させるのに好適な角度に設定されている。なお傾斜面４０には鏡面加工が施してある。鏡面加工は、例えば研磨によって実現される。 On the front surface of the left and right edge portions of the light guide plate 4, an inclined surface 40 whose front and rear dimensions (thickness dimensions) on the edge side are shorter than those on the center side is formed. The inclination angle of the inclined surface 40 is set to an angle suitable for reflecting light from the light source 8 described later toward the inside of the light guide plate 4. The inclined surface 40 is mirror-finished. The mirror surface processing is realized by polishing, for example.
　表示装置１１０の左右において、前記傾斜面４０と、前側に突出したシャーシ９の縁部との間に、表示装置１１０を補強する補強杆７、７が各別に設けてある。補強杆７と後保持枠体３との間にスペーサ１０が設けてある。該スペーサ１０は、導光板４よりも前側に位置にて、導光板４側に延出している。スペーサ１０の延出部分は、後方に突出しており、スペーサ１０の突出端の前後位置は、導光板４の前面と略同じである。スペーサ１０とシャーシ９との間で、導光板４は挟持されている。 Reinforcing rods 7 and 7 for reinforcing the display device 110 are separately provided on the left and right sides of the display device 110 between the inclined surface 40 and the edge of the chassis 9 protruding forward. A spacer 10 is provided between the reinforcing rod 7 and the rear holding frame 3. The spacer 10 extends toward the light guide plate 4 at a position in front of the light guide plate 4. The extended portion of the spacer 10 protrudes rearward, and the front and rear positions of the protruding end of the spacer 10 are substantially the same as the front surface of the light guide plate 4. The light guide plate 4 is sandwiched between the spacer 10 and the chassis 9.
　スペーサ１０とシャーシ９との間で、補強杆７は挟持されている。補強杆７の傾斜面４０側には、平面視鈎形の係止溝７０が形成してある。該係止溝７０は、導光板４の前面に平行であって、前後位置が導光板４の前面と略同じである係止前面７１と、導光板４の後面に平行であって、前後位置が導光板４の後面と略同じである係止後面７２と、傾斜面４０に対向しており、係止前面７１及び係止後面７２を前後方向に連結する連結面７３とを備える。連結面７３の前後寸法は、導光板４の前後寸法と略同じである。 The reinforcement rod 7 is sandwiched between the spacer 10 and the chassis 9. On the inclined surface 40 side of the reinforcing rod 7, a hook-like locking groove 70 in a plan view is formed. The locking groove 70 is parallel to the front surface of the light guide plate 4 and has a front and back position that is substantially the same as the front surface of the light guide plate 4 and a rear surface of the light guide plate 4. Is provided with a locking rear surface 72 that is substantially the same as the rear surface of the light guide plate 4 and a locking front surface 71 and a connecting surface 73 that connects the locking rear surface 72 in the front-rear direction. The front and rear dimensions of the connecting surface 73 are substantially the same as the front and rear dimensions of the light guide plate 4.
　導光板４の左右の縁部分は、係止溝７０に挿入されている。係止前面７１及び係止後面７２の間において、導光板４が係止されている。なお係止前面７１及び係止後面７２の左右寸法及び左右位置は、導光板４を係止溝７０に挿入した場合に、導光板４の前面の縁が係止前面７１に対向し、導光板４の後面の縁が係止後面７２に対向するように設計してある。 The left and right edge portions of the light guide plate 4 are inserted into the locking grooves 70. The light guide plate 4 is locked between the locking front surface 71 and the locking rear surface 72. The left and right dimensions and left and right positions of the locking front surface 71 and the locking rear surface 72 are such that when the light guide plate 4 is inserted into the locking groove 70, the front edge of the light guide plate 4 faces the locking front surface 71. 4 is designed such that the edge of the rear surface faces the rear surface 72 of the latch.
　前記凹部９０の内側に複数の光源８が設けてあり、該光源８は、ＬＥＤ基板８ａと、該ＬＥＤ基板８ａに実装されたＬＥＤ８ｂとを備える。ＬＥＤ基板８ａは図示しないビスによって、凹部９０の底面に固定してある。ＬＥＤ８ｂは、ＬＥＤ基板８ａの前面に実装してあり、導光板４の縁部分に対向している。ＬＥＤ８ｂは、左右方向において、傾斜面４０の中央部に対向している。なお光源８の前後寸法は、凹部９０の底面と導光板４の後面との間の寸法よりも短い。 A plurality of light sources 8 are provided inside the recess 90, and the light source 8 includes an LED substrate 8a and an LED 8b mounted on the LED substrate 8a. The LED substrate 8a is fixed to the bottom surface of the recess 90 with a screw (not shown). The LED 8 b is mounted on the front surface of the LED substrate 8 a and faces the edge portion of the light guide plate 4. LED8b is facing the center part of the inclined surface 40 in the left-right direction. The front-rear dimension of the light source 8 is shorter than the dimension between the bottom surface of the recess 90 and the rear surface of the light guide plate 4.
　シャーシ９の後側には、前記前キャビネットに係合する箱状の後キャビネット（図示せず）が配してあり、該後キャビネットは導光板４及びシャーシ９などを収容している。 A box-shaped rear cabinet (not shown) that engages with the front cabinet is disposed on the rear side of the chassis 9, and the rear cabinet accommodates the light guide plate 4 and the chassis 9.
　ＬＥＤ８ｂの発光によって発生した熱は、ＬＥＤ基板８ａを介して凹部９０に伝導し、外部に放出される。図２の矢印にて示すように、ＬＥＤ８ｂから照射された光は、後側から導光板４に進入し、鏡面加工が施された傾斜面４０に反射して、導光板４の左右方向中央部に向けて進行する。 The heat generated by the light emission of the LED 8b is conducted to the recess 90 through the LED substrate 8a and is released to the outside. As shown by the arrow in FIG. 2, the light emitted from the LED 8 b enters the light guide plate 4 from the rear side, is reflected by the inclined surface 40 that has been mirror-finished, and is centered in the left-right direction of the light guide plate 4. Proceed toward.
　実施の形態１に係る光源装置１００及び表示装置１１０にあっては、シャーシ９が備える凹部９０に光源８を支持することによって、放熱経路の短縮を図り、効率的な放熱を実現することができる。また凹部９０の表面積は平坦に形成されている場合に比べて大きく、放熱の効率を向上させることができる。また光源８をシャーシ９に直接固定することによって、固定に使用するビスの数は、放熱部材を介してシャーシ９に固定する場合に比べて削減され、生産効率を向上させることができる。 In the light source device 100 and the display device 110 according to the first embodiment, by supporting the light source 8 in the recess 90 provided in the chassis 9, the heat dissipation path can be shortened and efficient heat dissipation can be realized. . Moreover, the surface area of the recessed part 90 is large compared with the case where it is formed flat, and can improve the efficiency of heat dissipation. Further, by directly fixing the light source 8 to the chassis 9, the number of screws used for fixing can be reduced as compared with the case of fixing to the chassis 9 via a heat radiating member, and the production efficiency can be improved.
　また凹部９０は、導光板４に対面した状態で導光板４の縁部に対向しており、光源装置１００の横幅は、導光板４の左右側面に光源８を対面させる場合に比べて短くなり、表示装置１１０の小型化を図ることができ、また表示装置１１０の額縁を狭くすることができる。また導光板４の縁部に形成された傾斜面４０によって、導光板４に対面した状態で光源８から出射された光は傾斜面４０で反射し、導光板４の内部に導かれる。また傾斜面４０に鏡面加工を施すことによって、光源８から出射された光を傾斜面４０にて確実に反射させることができ、光漏れを防止することができる。またＬＥＤ８ｂを使用することによって、冷陰極蛍光管を使用する場合に比べて、発光時に発生する熱量を抑制することができる。 The concave portion 90 faces the edge of the light guide plate 4 in a state of facing the light guide plate 4, and the lateral width of the light source device 100 is shorter than when the light source 8 faces the left and right side surfaces of the light guide plate 4. The display device 110 can be downsized and the frame of the display device 110 can be narrowed. The light emitted from the light source 8 while facing the light guide plate 4 is reflected by the inclined surface 40 and guided to the inside of the light guide plate 4 by the inclined surface 40 formed at the edge of the light guide plate 4. Further, by applying a mirror finish to the inclined surface 40, the light emitted from the light source 8 can be reliably reflected by the inclined surface 40, and light leakage can be prevented. Further, by using the LED 8b, it is possible to suppress the amount of heat generated at the time of light emission compared to the case of using a cold cathode fluorescent tube.
　また凹部９０の内側に光源８を支持させることによって、導光板４はシャーシ９に近接し、導光板４に垂直な方向（前後方向）に不要な隙間が発生することを回避することができる。そのため光源装置１００及び表示装置１１０の大型化を防ぐことができる。 Further, by supporting the light source 8 inside the recess 90, the light guide plate 4 is close to the chassis 9, and it is possible to avoid unnecessary gaps in the direction perpendicular to the light guide plate 4 (front-rear direction). Therefore, enlargement of the light source device 100 and the display device 110 can be prevented.
　また光源８は導光板４の後面に対向しており、導光板４が左右方向へ熱膨張したとしても、導光板４はＬＥＤ８ｂに接触しない。そのため導光板４の接触によるＬＥＤ８ｂの点灯の不具合は発生しない。 Further, the light source 8 faces the rear surface of the light guide plate 4, and even if the light guide plate 4 is thermally expanded in the left-right direction, the light guide plate 4 does not contact the LED 8b. Therefore, the malfunction of lighting of LED8b by the contact of the light-guide plate 4 does not generate | occur | produce.
　なお実施の形態１に係る光源装置１００及び表示装置１１０は、左右に光源８を配置しているが、導光板４の上下側面に傾斜面を形成し、上下に光源８を配置しても良い。この場合、光源装置１００の縦幅は、導光板４の上下側面に光源８を対面させる場合に比べて短い。 In the light source device 100 and the display device 110 according to the first embodiment, the light sources 8 are arranged on the left and right sides, but inclined surfaces may be formed on the upper and lower side surfaces of the light guide plate 4 and the light sources 8 may be arranged on the upper and lower sides. . In this case, the vertical width of the light source device 100 is shorter than when the light source 8 faces the upper and lower side surfaces of the light guide plate 4.
　（実施の形態２）
　以下本発明を実施の形態２に係る光源装置１００及び該光源装置１００を備える表示装置１１０を示す図面に基づいて詳述する。図３は表示装置１１０の略示平面断面図である。なお図３には表示装置１１０の右側部分のみ表示されている。 (Embodiment 2)
Hereinafter, the present invention will be described in detail based on the drawings showing a light source device 100 according to a second embodiment and a display device 110 including the light source device 100. FIG. 3 is a schematic plan sectional view of the display device 110. In FIG. 3, only the right side portion of the display device 110 is displayed.
　前記シャーシ９の内、前記導光板４の左右の縁部に対向する部分に、貫通孔９１がそれぞれ形成してあり、該貫通孔９１は、シャーシ９の縁部の近傍に位置する。貫通孔９１の後側に、凹形の放熱部（突出部）９２が配置してあり、該放熱部９２の窪んだ部分が貫通孔９１を介して導光板４に対面している。放熱部９２はビス９３によって、貫通孔９１を塞ぐようにシャーシ９の後面に固定してある。放熱部９２は、シャーシ９の後面よりも後方に突出している。 In the chassis 9, through holes 91 are formed in portions facing the left and right edges of the light guide plate 4, and the through holes 91 are located in the vicinity of the edges of the chassis 9. A concave heat radiating portion (projecting portion) 92 is disposed on the rear side of the through hole 91, and a recessed portion of the heat radiating portion 92 faces the light guide plate 4 through the through hole 91. The heat radiating portion 92 is fixed to the rear surface of the chassis 9 with screws 93 so as to close the through holes 91. The heat radiating portion 92 protrudes rearward from the rear surface of the chassis 9.
　放熱部９２の内、貫通孔９１に対向する部分に光源８が設けてある。ＬＥＤ基板８ａは、放熱部９２の窪んだ部分に固定してある。ＬＥＤ８ｂは、貫通孔９２の内側に位置している。またＬＥＤ８ｂは、左右方向において、傾斜面４０の中央部に対向している。なお光源８の上下寸法及び左右寸法は、貫通孔９１の直径よりも小さく、光源８の前後寸法は、貫通孔９１の軸方向の寸法よりも小さい。 The light source 8 is provided in a portion of the heat radiating portion 92 that faces the through hole 91. The LED substrate 8 a is fixed to a recessed portion of the heat radiating portion 92. The LED 8 b is located inside the through hole 92. Further, the LED 8b faces the central portion of the inclined surface 40 in the left-right direction. The vertical dimension and the horizontal dimension of the light source 8 are smaller than the diameter of the through hole 91, and the longitudinal dimension of the light source 8 is smaller than the axial dimension of the through hole 91.
　ＬＥＤ８ｂの発光によって発生した熱は、ＬＥＤ基板８ａを介して放熱部９２に伝導し、外部に放出される。図３の矢印にて示すように、ＬＥＤ８ｂから照射された光は、後側から導光板４に進入し、鏡面加工が施された傾斜面４０にて反射し、導光板４の左右方向中央部に向けて進行する。 The heat generated by the light emission of the LED 8b is conducted to the heat radiating portion 92 via the LED substrate 8a and released to the outside. As shown by the arrow in FIG. 3, the light emitted from the LED 8 b enters the light guide plate 4 from the rear side, is reflected by the inclined surface 40 that is mirror-finished, and is centered in the left-right direction of the light guide plate 4. Proceed toward.
　実施の形態２に係る光源装置１００及び表示装置１１０にあっては、導光板４の後側から貫通孔９１に光源８を挿入することによって、光源８は貫通孔９１の内側に位置し、導光板４の縁部分に近接する。貫通孔９１の内側に光源８を位置させることによって、光源８から照射された光に前方への指向性を持たせることができ、また導光板４の縁部分に近接させることによって、光源８から照射された光を直ちに導光板４に導くことができる。 In the light source device 100 and the display device 110 according to the second embodiment, the light source 8 is located inside the through hole 91 by inserting the light source 8 into the through hole 91 from the rear side of the light guide plate 4. Proximity to the edge of the optical plate 4. By positioning the light source 8 inside the through hole 91, the light emitted from the light source 8 can be given directivity in the forward direction, and from the light source 8 by approaching the edge portion of the light guide plate 4. The irradiated light can be immediately guided to the light guide plate 4.
　また放熱部９２を後側から取り外すことによって、光源８の交換ができるため、光源８の交換のために、表示パネル１を取り外す必要がなく、光源８の保守・交換を容易に行うことができる。また表示装置１１０内の空間を考慮した上で、放熱部９２の前後方向の寸法を変更する又はフィン形状に変更するなど、放熱部９２の設計を容易に変更することができ、光源装置１００及び表示装置１１０の小型化並びに効率的な放熱を両立させることができる。 Further, since the light source 8 can be replaced by removing the heat radiating portion 92 from the rear side, it is not necessary to remove the display panel 1 for replacing the light source 8, and the maintenance and replacement of the light source 8 can be easily performed. . In addition, in consideration of the space in the display device 110, the design of the heat radiating portion 92 can be easily changed, such as changing the size of the heat radiating portion 92 in the front-rear direction or changing to a fin shape. The display device 110 can be both reduced in size and efficiently radiated.
　また光源８は導光板４の後面に対向しており、導光板４が左右方向へ熱膨張したとしても、導光板４はＬＥＤ８ｂに接触しない。そのため導光板４の接触によるＬＥＤ８ｂの点灯の不具合は発生しない。 Further, the light source 8 faces the rear surface of the light guide plate 4, and even if the light guide plate 4 is thermally expanded in the left-right direction, the light guide plate 4 does not contact the LED 8b. Therefore, the malfunction of lighting of LED8b by the contact of the light-guide plate 4 does not generate | occur | produce.
　実施の形態２に係る光源装置１００及び表示装置１１０の構成の内、実施の形態１と同様な構成については同じ符号を付し、その詳細な説明を省略する。 Of the configurations of the light source device 100 and the display device 110 according to the second embodiment, configurations similar to those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
　（実施の形態３）
　以下本発明を実施の形態３に係る光源装置１００及び表示装置１１０を示す図面に基づいて詳述する。図４は表示装置１１０の略示平面断面図である。なお図４には表示装置１１０の右側部分のみ表示されている。 (Embodiment 3)
Hereinafter, the present invention will be described in detail with reference to the drawings showing a light source device 100 and a display device 110 according to a third embodiment. FIG. 4 is a schematic plan sectional view of the display device 110. In FIG. 4, only the right side portion of the display device 110 is displayed.
　前記シャーシ９には、導光板４よりも右側又は左側の位置において、貫通孔９５が形成してある。貫通孔９５は、導光板４の右側面又は左側面に接近している。貫通孔９５には、平面視Ｌ形の放熱部（突出部）９６が後側から挿入してある。放熱部９６は、貫通孔９５に挿入されて前方に延出する延出部９６ａと、該延出部９６ａに連なり、延出部９６ａに直角な直角部９６ｂとを備える。 A through hole 95 is formed in the chassis 9 at a position on the right side or the left side of the light guide plate 4. The through hole 95 is close to the right side surface or the left side surface of the light guide plate 4. An L-shaped heat radiation part (projection part) 96 in a plan view is inserted into the through hole 95 from the rear side. The heat radiating portion 96 includes an extending portion 96a that is inserted into the through hole 95 and extends forward, and a right-angle portion 96b that is continuous with the extending portion 96a and is perpendicular to the extending portion 96a.
　延出部９６ａは、導光板４の右側面又は左側面に近接するように、貫通孔９５に挿入されており、貫通孔９５の内側面に当接している。直角部９６ｂは、貫通孔９５よりも後側に位置し、導光板４から離隔する方向に突出している。直角部９６ｂの延出幅は、貫通孔９５の直径よりも大きく、貫通孔９５を塞いでいる。直角部９６ｂは、シャーシ９の後面に対向し、ビス９７によってシャーシ９の後面に固定されている。 The extending portion 96 a is inserted into the through hole 95 so as to be close to the right side surface or the left side surface of the light guide plate 4, and is in contact with the inner side surface of the through hole 95. The right angle portion 96 b is located behind the through hole 95 and protrudes in a direction away from the light guide plate 4. The extending width of the right-angled part 96 b is larger than the diameter of the through hole 95 and closes the through hole 95. The right angle portion 96 b faces the rear surface of the chassis 9 and is fixed to the rear surface of the chassis 9 with screws 97.
　延出部９６ａには、光源８が設けてある。光源８のＬＥＤ基板８ａは、延出部９６ａに固定してある。光源８のＬＥＤ８ｂは、前後方向において、導光板４の右側面又は左側面の中央部に対向している。 The light source 8 is provided in the extending part 96a. The LED substrate 8a of the light source 8 is fixed to the extending portion 96a. The LED 8b of the light source 8 faces the central portion of the right side surface or the left side surface of the light guide plate 4 in the front-rear direction.
　ＬＥＤ８ｂの発光によって発生した熱は、ＬＥＤ基板８ａを介して放熱部９６に伝導し、直角部９６ｂから外部に放出される。図４の矢印にて示すように、ＬＥＤ８ｂから照射された光は、導光板４の右側面又は左側面に進入し、導光板４の左右方向中央部に向けて進行する。 The heat generated by the light emission of the LED 8b is conducted to the heat radiating portion 96 through the LED substrate 8a, and is released to the outside from the right angle portion 96b. As indicated by the arrows in FIG. 4, the light emitted from the LED 8 b enters the right side surface or the left side surface of the light guide plate 4 and travels toward the center in the left-right direction of the light guide plate 4.
　実施の形態３に係る光源装置１００及び表示装置１１０にあっては、光源は放熱部９６と導光板４の右側面又は左側面との間に位置し、光源８から出射された光は導光板４の右側面又は左側面から導光板の内部に確実に進入する。また表示装置１１０内の空間を考慮した上で、放熱部９６の前後方向の寸法を変更する又はフィン形状に変更するなど、放熱部９６の設計を容易に変更することができ、光源装置１００及び表示装置１１０の小型化並びに効率的な放熱を両立させることができる。 In the light source device 100 and the display device 110 according to the third embodiment, the light source is located between the heat radiation part 96 and the right side surface or the left side surface of the light guide plate 4, and the light emitted from the light source 8 is the light guide plate. 4 reliably enters the light guide plate from the right side surface or the left side surface. In addition, in consideration of the space in the display device 110, the design of the heat radiating unit 96 can be easily changed, such as changing the size of the heat radiating unit 96 in the front-rear direction or changing to a fin shape. The display device 110 can be both reduced in size and efficiently radiated.
　実施の形態３に係る光源装置１００及び表示装置１１０の構成の内、実施の形態１又は２と同様な構成については、同じ符号を付し、その詳細な説明を省略する。 Among the configurations of the light source device 100 and the display device 110 according to the third embodiment, configurations similar to those in the first or second embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
　実施の形態１～３における光源８はＬＥＤ８ｂを備えているが、ＬＥＤ８ｂに代えて、ＬＤ(Laser Diode)、蛍光管及び白熱球などの他の発光素子を備えてもよい。 Although the light source 8 in the first to third embodiments includes the LED 8b, the light source 8 may include other light emitting elements such as an LD (Laser Diode), a fluorescent tube, and an incandescent bulb instead of the LED 8b.
　実施の形態１～３に係る表示装置１１０をテレビ受信装置２００に使用してもよい。図５はテレビ受信装置２００を略示するブロック図である。図５に示すように、テレビ受信装置２００は、アンテナ３００から放送波を受信するチューナ２０１と、符号化された放送波を復号するデコーダ２０２と、表示装置１１０とを備える。テレビ受信装置２００は、チューナ２０１にて受信した放送波をデコーダ２０２で復号し、復号した情報に基づいて表示装置１１０に映像を表示する。上述したように、表示装置１１０の小型化及び効率的な放熱を両立させることができるので、表示装置１１０は、大型画面のテレビ受信装置２００に好適に使用される。 The display device 110 according to Embodiments 1 to 3 may be used for the television receiver 200. FIG. 5 is a block diagram schematically showing the television receiver 200. As shown in FIG. 5, the television receiver 200 includes a tuner 201 that receives broadcast waves from an antenna 300, a decoder 202 that decodes encoded broadcast waves, and a display device 110. The television receiver 200 decodes the broadcast wave received by the tuner 201 by the decoder 202 and displays an image on the display device 110 based on the decoded information. As described above, since the display device 110 can be both reduced in size and efficiently radiated, the display device 110 is suitably used for the television receiver 200 having a large screen.
　以上説明した実施の形態は本発明の例示であり、本発明は特許請求の範囲の記載に基づいて定められる範囲内において種々変更した形態で実施することができる。 The embodiment described above is an exemplification of the present invention, and the present invention can be implemented in variously modified forms within the scope determined based on the description of the claims.
　１　表示パネル（表示部）
　４　導光板
　４０　傾斜面
　８　光源
　８ａ　ＬＥＤ基板
　８ｂ　ＬＥＤ
　９　シャーシ
　９０　凹部（突出部）
　９１、９５　貫通孔
　９２、９６　放熱部（突出部）
　１００　光源装置
　１１０　表示装置
　２００　テレビ受信装置
　２０１　チューナ 1 Display panel (display section)
4 Light guide plate 40 Inclined surface 8 Light source 8a LED substrate 8b LED
9 Chassis 90 Recess (projection)
91, 95 Through hole 92, 96 Heat radiation part (protrusion part)
DESCRIPTION OF SYMBOLS 100 Light source device 110 Display apparatus 200 Television receiver 201 Tuner

Claims (9)

  1. 　導光板に向けて光を出射する光源と、該光源を支持するシャーシとを備える光源装置において、
    　前記シャーシは、一面が前記導光板と対面する平板状をなし、
    　前記シャーシは他面側に突出する突出部を備え、
    　前記突出部の一面側にて前記光源を支持していることを特徴とする光源装置。     In a light source device comprising a light source that emits light toward a light guide plate and a chassis that supports the light source,
    The chassis has a flat plate shape with one surface facing the light guide plate,
    The chassis includes a protruding portion protruding to the other surface side,
    The light source device, wherein the light source is supported on one surface side of the protrusion.
  2. 　前記光源は前記導光板の一面に対向し、
    　前記導光板の他面における縁部に、該縁部側の厚さ寸法が中央部側よりも短い傾斜面を形成してあること
    　を特徴とする請求項１に記載の光源装置。     The light source faces one surface of the light guide plate,
    2. The light source device according to claim 1, wherein an inclined surface having a thickness dimension on the edge side shorter than that on the center side is formed on an edge of the other surface of the light guide plate.
  3. 　前記傾斜面には鏡面加工が施してあることを特徴とする請求項２に記載の光源装置。 The light source device according to claim 2, wherein the inclined surface is mirror-finished.
  4. 　前記突出部は、前記導光板から離反する側に窪んだ凹形に形成されており、
    　前記突出部の窪んだ箇所に前記光源を支持していることを特徴とする請求項２又は３に記載の光源装置。     The protrusion is formed in a concave shape that is recessed on the side away from the light guide plate,
    The light source device according to claim 2, wherein the light source is supported at a recessed portion of the protrusion.
  5. 　前記シャーシに貫通孔を設けてあり、
    　前記突出部は、前記貫通孔を介して前記導光板に対向しており、
    　前記光源は前記貫通孔の内側に位置すること
    　を特徴とする請求項２から４のいずれか一つに記載の光源装置。     A through hole is provided in the chassis;
    The protruding portion faces the light guide plate through the through hole,
    The light source device according to claim 2, wherein the light source is located inside the through hole.
  6. 　前記シャーシは、前記導光板と対面する平板状をなし、
    　前記シャーシは、前記導光板の周囲に延出しており、
    　前記シャーシにおける前記導光板の周囲に延出した部分に貫通孔を設けてあり、
    　前記突出部は前記貫通孔から突出していること
    　を特徴とする請求項１に記載の光源装置。     The chassis has a flat plate shape facing the light guide plate,
    The chassis extends around the light guide plate,
    A through hole is provided in a portion extending around the light guide plate in the chassis,
    The light source device according to claim 1, wherein the protruding portion protrudes from the through hole.
  7. 　前記光源はＬＥＤを備えることを特徴とする請求項１から６のいずれか一つに記載の光源装置。 The light source device according to any one of claims 1 to 6, wherein the light source includes an LED.
  8. 　請求項１から７のいずれか一つに記載の光源装置と、該光源装置から照射された光を透過する表示部とを備えることを特徴とする表示装置。 A display device comprising: the light source device according to claim 1; and a display unit that transmits light emitted from the light source device.
  9. 　請求項８に記載された表示装置と、放送波を受信するチューナとを備えるテレビ受信装置。 A television receiver comprising the display device according to claim 8 and a tuner for receiving broadcast waves.
PCT/JP2011/056952 2010-03-24 2011-03-23 Light source device, display device, and television receiver WO2011118620A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010-068569 2010-03-24
JP2010068569A JP2011204391A (en) 2010-03-24 2010-03-24 Light source device and display device

Publications (1)

Publication Number Publication Date
WO2011118620A1 true WO2011118620A1 (en) 2011-09-29

Family

ID=44673171

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/056952 WO2011118620A1 (en) 2010-03-24 2011-03-23 Light source device, display device, and television receiver

Country Status (2)

Country Link
JP (1) JP2011204391A (en)
WO (1) WO2011118620A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013218125A (en) * 2012-04-10 2013-10-24 Japan Display Inc Liquid-crystal display

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11203925A (en) * 1998-01-14 1999-07-30 Noritake Co Ltd Light-emitting panel device
JP2001319514A (en) * 2000-05-11 2001-11-16 Stanley Electric Co Ltd Planar light source device
JP2002268572A (en) * 2001-03-06 2002-09-20 Citizen Electronics Co Ltd Illuminator for display
JP2007188863A (en) * 2005-12-15 2007-07-26 Mitsubishi Electric Corp Plane light source device and display device using the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11203925A (en) * 1998-01-14 1999-07-30 Noritake Co Ltd Light-emitting panel device
JP2001319514A (en) * 2000-05-11 2001-11-16 Stanley Electric Co Ltd Planar light source device
JP2002268572A (en) * 2001-03-06 2002-09-20 Citizen Electronics Co Ltd Illuminator for display
JP2007188863A (en) * 2005-12-15 2007-07-26 Mitsubishi Electric Corp Plane light source device and display device using the same

Also Published As

Publication number Publication date
JP2011204391A (en) 2011-10-13

Similar Documents

Publication Publication Date Title
JP5657763B2 (en) Display device, liquid crystal display device
JP5092408B2 (en) Backlight device and display device
EP2725291B1 (en) Curved display apparatus
US7663730B2 (en) Heat radiator and display unit
JP5508478B2 (en) Display device and television receiver
WO2014024771A1 (en) Lighting apparatus, display apparatus, and television receiver
WO2017002308A1 (en) Backlight device and liquid crystal display device
WO2012169268A1 (en) Display device and television receiver
JP2008060204A (en) Led back light unit and liquid display device using the same
JP2006310221A (en) Edge input type backlight and liquid crystal display device
JP2008103150A (en) Surface light source device
JP2009244861A (en) Image display apparatus
WO2016009543A1 (en) Display device
US10302999B2 (en) Light source device and display device
WO2011118620A1 (en) Light source device, display device, and television receiver
JP5098778B2 (en) LIGHTING DEVICE, LIQUID CRYSTAL DISPLAY DEVICE, AND ELECTRONIC DEVICE
JP2013218125A (en) Liquid-crystal display
JP5189702B2 (en) Display device and television receiver
JP2013196931A (en) Lighting device, display device, and television receiving apparatus
US10816748B2 (en) Display apparatus having holding member between optical sheet and diffusion plate
JP2011082036A (en) Light source module and electronic device including the same
JP2008130413A (en) Backlight unit and liquid crystal display having the same
JP4429870B2 (en) Liquid crystal display
JP2007121927A (en) Backlight device, and liquid crystal display device
JP2015087411A (en) Display device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11759425

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11759425

Country of ref document: EP

Kind code of ref document: A1