WO2012005065A1 - Illumination device, display device, and television receiver device - Google Patents

Illumination device, display device, and television receiver device Download PDF

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Publication number
WO2012005065A1
WO2012005065A1 PCT/JP2011/062074 JP2011062074W WO2012005065A1 WO 2012005065 A1 WO2012005065 A1 WO 2012005065A1 JP 2011062074 W JP2011062074 W JP 2011062074W WO 2012005065 A1 WO2012005065 A1 WO 2012005065A1
Authority
WO
WIPO (PCT)
Prior art keywords
chassis
protrusion
cover
substrate cover
bottom plate
Prior art date
Application number
PCT/JP2011/062074
Other languages
French (fr)
Japanese (ja)
Inventor
達朗 黒田
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 WO2012005065A1 publication Critical patent/WO2012005065A1/en

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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
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133314—Back frames
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133322—Mechanical guidance or alignment of LCD panel support components
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/46—Fixing elements

Definitions

  • the present invention relates to a lighting device, a display device, and a television receiver.
  • a backlight device is separately provided as a lighting device.
  • This backlight device is well known to be installed on the back side of the liquid crystal panel (opposite to the display surface).
  • the backlight device is installed on the inner surface of the bottom plate of the chassis and the chassis having a shape opened on the liquid crystal panel side.
  • a plurality of light sources for example, cold-cathode tubes and LEDs
  • an optical member such as a diffusion plate
  • a light reflection sheet that is laid in the chassis and reflects light from the light source toward the optical member and the liquid crystal panel.
  • a circuit board for driving a liquid crystal display device is attached to the chassis, and a board cover is attached so as to cover the circuit board.
  • a board cover and a circuit board are attached to the chassis by attachment means such as screws.
  • a liquid crystal display device configured to fix a circuit board with screws, one described in Patent Document 1 below is known.
  • the present invention has been completed based on the above-described circumstances, and an object thereof is to provide an illuminating device capable of easily performing a mounting operation of a substrate cover. Moreover, it aims at providing the display apparatus provided with such an illuminating device, and a television receiver.
  • a lighting device of the present invention includes a light source, a chassis in which the light source is accommodated, a circuit board attached to a bottom plate of the chassis, and attached to the bottom plate to cover the circuit board.
  • a board cover arranged in a shape, wherein the bottom plate is provided with a protrusion protruding toward the board cover, and the chassis is installed such that the plate surface of the bottom plate is along the vertical direction In the state, the protrusion is characterized by supporting the substrate cover.
  • the board cover in the installed state where the chassis is installed such that the plate surface of the bottom plate of the chassis is along the vertical direction, the board cover is supported by the protrusions. Accordingly, when the board cover is attached to the chassis in the above installed state, the board cover can be prevented from dropping, and workability related to the attachment can be improved.
  • the protrusion in the installation state, may support the lower end portion of the substrate cover from below.
  • the substrate cover can be attached with the lower end of the substrate cover supported from below. For this reason, even if the board cover supported by the protrusion falls from the protrusion, the board cover rotates in a direction away from the circuit board with the contact point with the protrusion as the center of rotation. Fall at. If the protrusion is not formed, the substrate cover may drop along the bottom plate surface, and the substrate cover may come into contact with the circuit board.
  • the protrusion by providing the protrusion, it is possible to suppress the situation in which the substrate cover falls along the plate surface of the bottom plate, and to protect the circuit board.
  • the protrusion may be formed with a recess into which the lower end of the substrate cover is fitted.
  • the situation where the substrate cover falls from the protrusion can be suppressed by fitting the lower end of the substrate cover into the recess.
  • an insertion hole into which the protrusion can be inserted is formed in the substrate cover, and the protrusion can be inserted into the insertion hole to support the substrate cover.
  • the tip end portion may extend from the tip end of the projection so as to cover the substrate cover from the side opposite to the chassis.
  • circuit board is attached in such a manner as to straddle a plurality of attachment portions protruding from the bottom plate, and the protrusion is formed on at least one attachment portion among the plurality of attachment portions.
  • the circuit board is attached in such a manner as to straddle a plurality of attachment portions protruding from the bottom plate, and the protrusion is formed on at least one attachment portion among the plurality of attachment portions. Can be.
  • the protrusion may be formed integrally with the chassis. With such a configuration, it is possible to reduce the number of parts and contribute to cost reduction.
  • a display device includes the above-described illumination device and a display panel that performs display using light from the illumination device.
  • a liquid crystal panel using liquid crystal can be exemplified.
  • Such a display device can be applied as a liquid crystal display device to various uses, for example, a desktop screen of a television or a personal computer, and is particularly suitable for a large screen.
  • a television receiver includes the display device.
  • the invention's effect ADVANTAGE OF THE INVENTION According to this invention, the illuminating device which can perform the attachment operation
  • the disassembled perspective view which shows schematic structure of the television receiver which concerns on Embodiment 1 of this invention.
  • the disassembled perspective view which shows schematic structure of the liquid crystal display device with which the television receiver of FIG. 1 is provided.
  • Sectional drawing which shows the cross-sectional structure along the long side direction of a liquid crystal display device.
  • the top view which shows the back surface of the backlight apparatus with which the liquid crystal display device of FIG. 3 is provided.
  • Sectional drawing which shows the attachment structure of a board
  • Sectional drawing which shows the protrusion concerning Embodiment 2 of this invention.
  • Sectional drawing which shows the protrusion concerning Embodiment 3 of this invention.
  • the top view which shows the state which attached the board
  • FIG. 1 is an exploded perspective view showing a schematic configuration of the television receiver of the present embodiment
  • FIG. 2 is an exploded perspective view showing a schematic configuration of a liquid crystal display device included in the television receiver of FIG. 1
  • FIG. 3 is a liquid crystal display of FIG. It is sectional drawing which shows the cross-sectional structure along the long side direction of an apparatus.
  • the long side direction of the liquid crystal display device 10 (and the chassis 14) is the X-axis direction
  • the short side direction is the Y-axis direction
  • the vertical direction in FIG. 3 is the Z-axis direction (front and back direction).
  • 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 liquid crystal display device 10, a power supply substrate P, and a tuner T. And a stand S.
  • the liquid crystal display device 10 (display device) has a horizontally long rectangular shape as a whole, and is housed in a vertically placed state (a short side direction is arranged along the vertical direction. In the following description, The vertical direction in this vertically placed state (vertical direction in FIG. 4, Y-axis direction) is referred to as the vertical direction.
  • This liquid crystal display device 10 includes a liquid crystal panel 11 (display panel), as shown in FIG.
  • a backlight device 12 (illumination device) as an external light source is provided, and these are integrally held by a frame-like bezel 13 or the like.
  • the liquid crystal panel 11 is configured such that a pair of glass substrates are bonded together with a predetermined gap therebetween, and liquid crystal is sealed between the glass substrates.
  • 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. Note that polarizing plates 11a and 11b are attached to the outside of both substrates (see FIG. 3).
  • the backlight device 12 is attached so as to cover a substantially box-shaped chassis 14 having an opening 14 b on the light emitting surface side (liquid crystal panel 11 side), and the opening 14 b of the chassis 14.
  • a cold cathode tube 17 (light source), a lamp clip 18 for attaching the cold cathode tube 17 to the chassis 14, and a relay for relaying electrical connection at each end of the cold cathode tube 17.
  • a connector 19 and a holder 20 that collectively covers the end of the cold cathode tube 17 group and the relay connector 19 group are accommodated.
  • the diffusion plate 15 a side is a light emission side from the cold cathode tube 17.
  • the chassis 14 is made of a metal plate-like member formed by sheet metal, and has a rectangular flat plate-like bottom plate 14a and an outer edge portion 21 (short side in the short side direction) that rises from each side and is folded back into a substantially U shape. It has a substantially box shape including an outer edge portion 21a and a long side outer edge portion 21b) in the long side direction.
  • a plurality of attachment holes 22 for attaching the relay connector 19 are formed through both ends of the long side direction.
  • a fixing hole 14c is formed through the upper surface of the long-side outer edge portion 21b of the chassis 14, and the bezel 13, the frame 16, the chassis 14 and the like are integrated by screws or the like, for example. It is possible.
  • the material of the chassis 14 is not limited to metal and can be changed as appropriate.
  • a light reflection sheet 23 is disposed on the inner surface side (the surface side facing the cold cathode tube 17) of the bottom plate 14 a of the chassis 14.
  • the light reflecting sheet 23 is made of synthetic resin, and the surface thereof is white with excellent reflectivity, and is laid so as to cover almost the entire region along the inner surface of the bottom plate 14a of the chassis 14 (FIG. 3). (The light reflection sheet is not shown). With this light reflecting sheet 23, it is possible to reflect the light emitted from the cold cathode tube 17 toward the diffusion plate 15a.
  • a diffusion plate 15a and an optical sheet 15b are disposed on the opening 14b side of the chassis 14.
  • the diffusion plate 15a is formed by dispersing light scattering particles in a synthetic resin plate-like member and has a function of diffusing linear light emitted from the cold cathode tube 17 serving as a tubular light source.
  • the short side edge portion of the diffusion plate 15a is placed on the first surface 20a of the holder 20, and is not subjected to vertical restraining force.
  • the long side edge of the diffusion plate 15 a is fixed by being sandwiched between the chassis 14 and the frame 16.
  • the optical sheet 15b disposed on the diffusion plate 15a is a laminate of a diffusion sheet, a lens sheet, and a reflective polarizing plate in order from the diffusion plate 15a side.
  • the optical sheet 15b is emitted from the cold cathode tube 17 and passes through the diffusion plate 15a. It has a function of converting the light that has passed through into planar light.
  • the liquid crystal panel 11 is installed on the upper surface side of the optical sheet 15 b, and the optical sheet 15 b is sandwiched between the diffusion plate 15 a and the liquid crystal panel 11.
  • the cold-cathode tube 17 has a long and narrow tubular shape, and a large number (20 in this embodiment) are parallel to each other in a state in which the length direction (axial direction) thereof coincides with the long side direction of the chassis 14. They are housed in the chassis 14 in a line-up state (see FIG. 2). Each end of the cold cathode tubes 17 is provided with a terminal (not shown) for receiving driving power, the end is fitted into the relay connector 19, and a holder 20 is attached so as to cover the relay connector 19. It has been.
  • the holder 20 that covers the end of the cold cathode tube 17 is made of a white synthetic resin and has an elongated, substantially box shape extending along the short side direction of the chassis 14.
  • the holder 20 is arranged so as to partially overlap the short side outer edge portion 21a of the chassis 14, and constitutes the side wall of the backlight device 12 together with the short side outer edge portion 21a.
  • the insertion pin 24 protrudes from the surface of the holder 20 that faces the folded outer edge portion 21 a of the chassis 14, and the insertion pin 24 is formed on the upper surface of the short-side outer edge portion 21 a of the chassis 14.
  • the holder 20 is attached to the chassis 14 by being inserted into the insertion hole 25.
  • the stepped surface of the holder 20 consists of three surfaces parallel to the bottom plate 14a of the chassis 14, and the short side edge of the diffusion plate 15a is placed on the first surface 20a at the lowest position.
  • an inclined cover 26 that extends toward the bottom plate 14a of the chassis 14 extends from the first surface 20a.
  • the short side edge portion of the liquid crystal panel 11 is placed on the second surface 20 b of the stepped surface of the holder 20.
  • the third surface 20 c at the highest position among the stepped surfaces of the holder 20 is disposed at a position overlapping the short side outer edge portion 21 a of the chassis 14 and is in contact with the bezel 13.
  • an inverter board 30 and a control board 40 are attached to the outer surface side of the bottom plate 14a of the chassis 14 (on the opposite side to the cold cathode tube 17 and the back surface side).
  • the above-described power supply board P (see FIG. 1, not shown in FIG. 4) is electrically connected to the inverter board 30 and the control board 40, and is a power supply source that supplies power to each of these boards. ing.
  • the inverter board 30 is provided at both ends of the long side direction of the chassis 14 and has a long rectangular shape along the short side direction of the chassis 14. Each inverter board 30 is electrically connected to the cold cathode tube 17 via a connector 27 and a harness 28. Further, the inverter board 30 boosts the input voltage input from the power supply board P by an inverter circuit constituted by a transformer or the like, and outputs an output voltage higher than the input voltage to the cold cathode tube 17. 17 has a function of controlling turning on (or turning off).
  • the control board 40 (circuit board) has a rectangular shape, and is centered in the long side direction of the chassis 14 and a position biased to one side in the short side direction of the chassis 14 (FIG. 4). (Upper side).
  • the control board 40 has a circuit component 41 mounted on a board made of synthetic resin (for example, made of paper phenol or glass epoxy resin), and receives various input signals such as TV signals from the tuner T as signals for driving the liquid crystal. And a function of supplying the converted liquid crystal driving signal to the liquid crystal panel 11.
  • a board cover 60 is attached to the bottom plate 14 a of the chassis 14 so as to cover the control board 40.
  • a substrate cover 31 is attached to the bottom plate 14 a so as to cover each inverter substrate 30.
  • Such a substrate cover 60, 31 has a function of protecting the substrates 40, 30 and preventing the touch of the substrates 40, 30 when the substrate becomes hot, such as when the substrate is driven. I'm in charge.
  • FIG. 4 shows a state in which the substrate covers 60 and 31 are removed from the chassis 14.
  • the substrate cover 60 has a plate shape, and has a central portion 61 having a substantially U shape in cross section opened toward the chassis 14, and the chassis 14 in the central portion 61. End 62 (upper end 62A and lower end 62B) extending along the bottom plate 14a from both ends in the short side direction (upper and lower ends in FIG. 6).
  • the control substrate 40 and the substrate cover 60 are shown in a sectional view.
  • an attachment base portion 50 (attachment portion, partially indicated by a broken line in FIG. 5) is provided at the attachment location of the control board 40.
  • a plurality of control boards 40 are formed so as to straddle the plurality of mounting base parts 50. Further, the control board 40 is attached to each mounting base portion 50 by screws B1.
  • the mounting base 50 is formed by protruding a part of the bottom plate 14a toward the outer surface side of the chassis 14 as shown in FIG. As shown in FIG. 5, the mounting base 50 is formed at positions corresponding to the four corners of the control board 40 having a square shape.
  • the upper mounting base 50 (indicated by reference numeral 50A) shown in FIG. 5 has a substantially hemispherical shape.
  • the lower mounting base 50 (indicated by reference numeral 50B) shown in FIG. 5 has a substantially rectangular shape that is long in the vertical direction in FIG.
  • each mounting base portion 50 is formed with a circular mounting hole 51 into which the screw B ⁇ b> 1 can be inserted.
  • the protrusion 52 is formed in the mounting base part 50B in the form which protruded one part to the chassis 14 outer surface side (namely, integral formation with the chassis 14).
  • the protrusion 52 is arranged below the adjacent mounting hole 51 in the vertically placed state (installed state), and is configured to support the lower end 62 of the substrate cover 60.
  • the protrusion 52 has a substantially quadrangular prism shape.
  • the protruding portion 52 extends in a form in which the protruding direction coincides with a direction orthogonal to the plate surface of the bottom plate 14a of the chassis 14 (X-axis and Y-axis directions, the vertical direction in FIG. 6).
  • the protrusion 52 is formed so that the protrusion length L1 is not less than the sum of the plate thickness t1 of the substrate cover 60 and the plate thickness t2 of the control substrate 40, as shown in FIG.
  • the control board 40 and the board cover 60 are supported from below.
  • the shape of the protrusion 52 is not limited to a columnar shape, and can be changed as appropriate.
  • the protrusion 52 may be a columnar shape.
  • the control board 40 is formed with a circular screw insertion hole 45 into which the screw B1 can be inserted.
  • a circular screw insertion hole 65 is formed at a position overlapping the screw insertion hole 45 at the end 62 of the substrate cover 60.
  • the mounting base 50 is formed by protruding a part of the bottom plate 14a to the outer surface side of the chassis 14. For this reason, when screw B1 is screwed into the inner periphery of mounting hole 51, it is possible to suppress a situation in which the tip of screw B1 interferes with light reflecting sheet 23 provided on bottom plate 14a.
  • the mounting base 50A and the mounting base 50B are also formed at locations corresponding to both ends of the inverter board 30 in the long side direction on the bottom plate 14a of the chassis 14, respectively.
  • the cover 31 can be attached via the screw B1.
  • a protrusion 52 is also formed on the mounting base portion 50B, so that the inverter substrate 30 and the substrate cover 31 can be supported.
  • the mounting structure for mounting the inverter board 30 and the board cover 31 to the mounting base 50 (structure using the protrusion 52 and the screw B1) is the mounting for mounting the control board 40 and the board cover 60 to the mounting base 50. Since it is the same as the structure, detailed description is omitted.
  • the chassis 14 is vertically placed with a holder (not shown) or the like, and the control board 40 and the board cover 60 are attached in this vertically placed state.
  • a vertical installation state here is an installation state (state of FIG.4 and FIG.6) which installed the chassis 14 in the form where the plate
  • the control board 40 is arranged at the upper part of the bottom plate 14a and at the central part in the left-right direction.
  • the lower end portion of the control board 40 is placed on the upper surface 52A of each protrusion 52 of each mounting base portion 50B. As a result, the control board 40 is supported by the protrusions 52.
  • the substrate cover 60 is disposed so as to cover the control substrate 40 from the outside of the chassis 14 (right side in FIG. 6).
  • the lower end 62B of the substrate cover 60 is placed on the upper surface 52A of each protrusion 52.
  • the substrate cover 60 is supported so as to straddle both protrusions 52.
  • the end portions 62 of the substrate cover 60 and the peripheral end portions on the upper and lower sides of the control substrate 40 are arranged so as to overlap each other in plan view.
  • the screw B1 is inserted into both the screw insertion hole 45 of the control board 40 and the screw insertion hole 65 of the board cover 60 from the outside of the chassis 14, and the tip of the screw B1 is screwed into the mounting hole 51 of the mounting base 50. Let Thereby, the attachment of the control board 40 and the board cover 60 to the chassis 14 is completed.
  • a substrate cover 60 disposed so as to cover the control substrate 40.
  • the bottom plate 14a is provided with a protrusion 52 projecting toward the substrate cover 60, and the plate surface 14a1 of the bottom plate 14a extends in the vertical direction (Y In the installed state in which the chassis 14 is installed along the axial direction), the protrusion 52 is characterized by supporting the substrate cover 60.
  • the board cover 60 is supported by the protrusion 52 in the installed state in which the chassis 14 is installed such that the plate surface 14a1 of the bottom plate 14a of the chassis 14 is along the vertical direction. Therefore, when the board cover 60 is attached to the chassis 14 in the installation state, the fall of the board cover 60 can be suppressed, and workability related to the attachment can be improved.
  • the protrusion 52 in the installed state, can support the lower end 62B of the substrate cover 60 from below.
  • the substrate cover 60 can be attached with the lower end 62B of the substrate cover 60 supported from below. For this reason, even if the substrate cover 60 supported by the protrusion 52 falls from the protrusion 52, the substrate cover 60 moves away from the circuit board with the contact point with the protrusion 52 as the center of rotation. It falls in the form of rotating in the direction (the direction of rotation of the substrate cover 60 is indicated by the arrow P1 in FIG. 6).
  • the substrate cover 60 falls along the plate surface 14a1 of the bottom plate 14a. That is, there is a possibility that the substrate cover 60 falls from the state shown in FIG. 6 and the substrate cover 60 may come into contact with the control substrate 40 (circuit component 41 or the like).
  • the protrusion 52 by providing the protrusion 52, it is possible to suppress the situation in which the substrate cover 60 falls along the plate surface 14a1 of the bottom plate 14a, and to protect the control substrate 40 (and in turn, its mounted components). .
  • the control board 40 is attached so as to straddle a plurality of mounting base parts 50 projecting from the chassis 14, and the projecting part 52 is at least one of the plurality of mounting base parts 50. It is formed in the part 50.
  • the protrusion 52 is formed integrally with the chassis 14. With such a configuration, it is possible to reduce the number of parts and contribute to cost reduction.
  • Embodiment 2 of the present invention will be described with reference to FIG.
  • the same parts as those in the above embodiment are denoted by the same reference numerals, and redundant description is omitted.
  • the protrusion 152 of the present embodiment is formed with a recess 152A that is recessed downward, and the lower end 62B of the substrate cover 60 and the lower end of the control substrate 40 can be fitted into the recess 152A. ing.
  • both the substrate cover 60 and the control substrate 40 are fitted in the recess 152A, but the present invention is not limited to this.
  • a configuration may be adopted in which only the substrate cover 60 is fitted into the recess 152A.
  • Embodiment 3 of the present invention will be described with reference to FIG.
  • the same parts as those in the above embodiment are denoted by the same reference numerals, and redundant description is omitted.
  • the configuration relating to the protrusions is different from that of the above embodiment.
  • the protrusion 252 of the present embodiment is a plate-like member that is configured as a separate part from the chassis 14.
  • the protrusion 252 protrudes in a downwardly inclined manner with respect to the direction intersecting the plate surface 14a1 of the bottom plate 14a. From the tip of the protrusion 252, the tip 253 extends so as to cover the substrate cover 260 from the side opposite to the chassis 14 (the right side in FIG. 8). That is, the protrusion 252 and the tip 253 constitute a substantially L-shaped member in cross-sectional view.
  • the protrusion 252 and the tip 253 constitute a substantially L-shaped member in cross-sectional view.
  • control board 40 and the board cover 60 are attached to the chassis 14 by passing the screws B1 through both the screw insertion holes 45 of the control board 40 and the screw insertion holes 65 of the board cover 60, in other words. And the control board 40 and the board
  • the control board 40 and the board cover 260 are individually attached to the chassis 14 with different screws B1. That is, the control board 40 and the board cover 260 are fixed separately. For this reason, the control board 40 is not supported by the protrusions 252, and only the substrate cover 260 is supported by the protrusions 252.
  • the protrusion 352 of the present embodiment includes a base end portion 352B extending from the bottom plate 14a and a front end portion 352A extending so as to bend upward with respect to the base end portion 352B. There is no.
  • insertion holes 363 are respectively formed in the lower end portion 362 ⁇ / b> B of the substrate cover 360 corresponding to the protrusions 352.
  • the insertion hole 363 has a rectangular shape, and the protrusion 352 can be inserted therethrough.
  • the board cover 360 can be supported by inserting the protrusion 352 into the insertion hole 363.
  • the shape of the insertion hole 363 is not limited to a square shape and can be changed as appropriate.
  • the tip 352A of the protrusion 352 can be locked to the edge of the insertion hole 363 from the outside of the chassis 14 (the side opposite to the chassis 14). In this way, the protrusion 352 is less likely to be removed from the insertion hole 363, and the substrate cover 360 can be more reliably supported by the protrusion 352.
  • the protrusion may be anything that can support the substrate cover.
  • the protrusion may have a structure in which the substrate cover is sandwiched and supported by a pair of protrusions.
  • the location where the protrusion 52 is formed is not limited to the mounting base 50.
  • the bottom plate 14 a of the chassis 14 may be formed at a location other than the mounting base portion 50. Moreover, you may form in the at least 1 mounting base part 50 among the some mounting base parts 50. FIG.
  • the shape of the mounting base 50 is not limited to that of the above embodiment. Further, the board cover 60 and the control board 40 may be configured to be attached to a portion of the bottom plate 14a of the chassis 14 where the mounting base 50 is not formed.
  • control board 40 is exemplified as the circuit board, but the present invention is not limited to this. As long as the circuit board and the board cover are attached to the chassis 14, the configuration of the present invention (configuration supported by the protrusions) can be applied.
  • the cold cathode tube 17 is used as the light source.
  • the present invention is not limited to this. It is also possible to use a hot cathode tube or an LED as the light source.
  • the liquid crystal panel and the chassis have been vertically placed with the short side direction aligned with the vertical direction.
  • the liquid crystal panel and the chassis have the long side direction set to the vertical direction. It may be in a vertically placed state matched.
  • the TFT is used as the switching element of the liquid crystal display device.
  • the present invention can also be applied to a liquid crystal display device using a switching element other than TFT (for example, a thin film diode (TFD)), and color display.
  • a switching element other than TFT for example, a thin film diode (TFD)
  • TFT thin film diode
  • the present invention can be applied to a liquid crystal display device that displays black and white.
  • the liquid crystal display device using the liquid crystal panel as the display panel has been illustrated, but the present invention can also be applied to a display device using another type of display panel.
  • the television receiver provided with the tuner is exemplified, but the present invention can also be applied to a display device not provided with the tuner.
  • SYMBOLS 10 Liquid crystal display device (display device), 11 ... Liquid crystal panel (display panel), 12, 112, 212, 312 ... Backlight device (illumination device), 14 ... Chassis, 14a ... Bottom plate, 14a1 ... Plate surface of bottom plate, 17 ... Cold cathode tube (light source), 40 ... Control board (circuit board), 50 ... Mounting base (mounting part), 52, 152, 252, 352 ... Projection, 60, 260, 360 ... Board cover, 62B, 262B, 362B ... lower end portion of substrate cover, 152A ... concave portion, 253 ... tip portion, 363 ... insertion hole, TV ... TV receiver

Abstract

Provided is an illumination device in which a substrate cover can be attached easily. The disclosed illumination device includes: a cold-cathode tube (17); a chassis (14) in which the cold-cathode tube (17) is housed; a control substrate (40) that is attached to the base plate (14a) of the chassis (14); and a substrate cover (60) that is attached to the base plate (14a) and that is arranged so as to cover the control substrate (40). The illumination device is characterized in that: the base plate (14a) has a projection (52) that projects toward the substrate cover (60); and the projection (52) supports the substrate cover (60) when the chassis (14) is installed in a state such that the plate surface (14a1) of the base plate (14a) is arranged along the vertical direction.

Description

照明装置、表示装置、及びテレビ受信装置Lighting device, display device, and television receiver
　本発明は、照明装置、表示装置、及びテレビ受信装置に関する。 The present invention relates to a lighting device, a display device, and a television receiver.
　従来、液晶テレビなどの液晶表示装置に用いる液晶パネルは、自発光しないため、別途に照明装置としてバックライト装置を備えている。このバックライト装置は、液晶パネルの裏側（表示面とは反対側）に設置されるものが周知であり、液晶パネル側に開口された形状をなすシャーシと、シャーシにおける底板の内面側に設置される複数の光源（例えば冷陰極管やＬＥＤなど）と、シャーシの開口部を覆う形で配され、光源が発する光を効率的に液晶パネル側へ出射させるための光学部材（拡散板等）と、シャーシ内に敷設され、光源からの光を光学部材並びに液晶パネル側に反射させる光反射シートなど備えている。 Conventionally, since a liquid crystal panel used for a liquid crystal display device such as a liquid crystal television does not emit light spontaneously, a backlight device is separately provided as a lighting device. This backlight device is well known to be installed on the back side of the liquid crystal panel (opposite to the display surface). The backlight device is installed on the inner surface of the bottom plate of the chassis and the chassis having a shape opened on the liquid crystal panel side. A plurality of light sources (for example, cold-cathode tubes and LEDs), and an optical member (such as a diffusion plate) that is arranged to cover the opening of the chassis and efficiently emits light emitted from the light sources to the liquid crystal panel side. And a light reflection sheet that is laid in the chassis and reflects light from the light source toward the optical member and the liquid crystal panel.
　また、シャーシには、液晶表示装置の駆動に係る回路基板が取り付けられており、この回路基板を覆う形で基板カバーが取り付けられているものが知られている。このような基板カバー及び回路基板は、例えば、ビスなどの取付手段によってシャーシに取り付けられる。このような、ビスで回路基板を固定する構成の液晶表示装置の一例として下記特許文献１に記載されたものが知られている。 Also, it is known that a circuit board for driving a liquid crystal display device is attached to the chassis, and a board cover is attached so as to cover the circuit board. Such a board cover and a circuit board are attached to the chassis by attachment means such as screws. As an example of such a liquid crystal display device configured to fix a circuit board with screws, one described in Patent Document 1 below is known.
特開２００７－１８０７５１号公報JP 2007-180751 A
（発明が解決しようとする課題）
　ところで、シャーシに基板カバーを取り付ける作業は、シャーシを立てた状態、つまり、シャーシにおける基板カバーの取付面が鉛直方向に沿った状態で行われることがある。このため、作業者が基板カバーを取り付ける際には、基板カバーが落下しないように手などで保持しておく必要があり、作業性において改善の余地があった。また、基板カバーを作業者が手で保持する場合は、取付作業中に基板カバーが落下し、回路基板に接触して、回路基板を傷付ける事態も懸念される。 (Problems to be solved by the invention)
By the way, the operation | work which attaches a board | substrate cover to a chassis may be performed in the state which stood the chassis, ie, the state where the attachment surface of the board | substrate cover in a chassis was along the perpendicular direction. For this reason, when an operator attaches the substrate cover, it is necessary to hold the substrate cover by hand so that the substrate cover does not fall, and there is room for improvement in workability. In addition, when the operator holds the board cover by hand, there is a concern that the board cover may fall during the attaching operation and come into contact with the circuit board to damage the circuit board.
　本発明は上記のような事情に基づいて完成されたものであって、基板カバーの取付作業を容易に行うことができる照明装置を提供することを目的とする。また、このような照明装置を備えた表示装置、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 completed based on the above-described circumstances, and an object thereof is to provide an illuminating device capable of easily performing a mounting operation of a substrate cover. Moreover, it aims at providing the display apparatus provided with such an illuminating device, and a television receiver.
（課題を解決するための手段）
　上記課題を解決するために、本発明の照明装置は、光源と、前記光源が収容されたシャーシと、前記シャーシの底板に取り付けられた回路基板と、前記底板に取り付けられ、前記回路基板を覆う形で配された基板カバーと、を備え、前記底板には、前記基板カバー側に突出された突部が設けられ、前記底板の板面が鉛直方向に沿う形で前記シャーシが設置された設置状態において、前記突部は、前記基板カバーを支持することに特徴を有する。 (Means for solving problems)
In order to solve the above-described problems, a lighting device of the present invention includes a light source, a chassis in which the light source is accommodated, a circuit board attached to a bottom plate of the chassis, and attached to the bottom plate to cover the circuit board. A board cover arranged in a shape, wherein the bottom plate is provided with a protrusion protruding toward the board cover, and the chassis is installed such that the plate surface of the bottom plate is along the vertical direction In the state, the protrusion is characterized by supporting the substrate cover.
　本発明において、シャーシの底板の板面が鉛直方向に沿う形でシャーシが設置された設置状態では、突部によって基板カバーが支持される構成となっている。これにより、上記設置状態において、シャーシに基板カバーを取り付ける際に、基板カバーの落下を抑制でき、取付に係る作業性を向上させることができる。 In the present invention, in the installed state where the chassis is installed such that the plate surface of the bottom plate of the chassis is along the vertical direction, the board cover is supported by the protrusions. Accordingly, when the board cover is attached to the chassis in the above installed state, the board cover can be prevented from dropping, and workability related to the attachment can be improved.
　上記構成で、前記設置状態において、前記突部は、前記基板カバーの下端部を下方から支持するものとすることができる。本発明においては、基板カバーの下端部を下方から支持した状態で、基板カバーの取り付けを行うことができる。このため、突部に支持された基板カバーが、仮に突部から落下する場合であっても、基板カバーは、突部との当接箇所を回転中心として、回路基板から遠ざかる方向に回転する形で落下する。仮に突部が形成されていない構成の場合は、底板の板面に沿って基板カバーが落下する可能性があり、回路基板に基板カバーが接触するおそれがある。この点、本発明においては、突部を備えることによって、底板の板面に沿って基板カバーが落下する事態を抑制でき、回路基板を保護できる。 In the above configuration, in the installation state, the protrusion may support the lower end portion of the substrate cover from below. In the present invention, the substrate cover can be attached with the lower end of the substrate cover supported from below. For this reason, even if the board cover supported by the protrusion falls from the protrusion, the board cover rotates in a direction away from the circuit board with the contact point with the protrusion as the center of rotation. Fall at. If the protrusion is not formed, the substrate cover may drop along the bottom plate surface, and the substrate cover may come into contact with the circuit board. In this regard, in the present invention, by providing the protrusion, it is possible to suppress the situation in which the substrate cover falls along the plate surface of the bottom plate, and to protect the circuit board.
　また、前記突部には、前記基板カバーの前記下端部が嵌合される凹部が形成されているものとすることができる。基板カバー取り付け時に、基板カバーの下端部を凹部に嵌合させることで、突部から基板カバーが落下する事態を抑制できる。 Further, the protrusion may be formed with a recess into which the lower end of the substrate cover is fitted. When the substrate cover is attached, the situation where the substrate cover falls from the protrusion can be suppressed by fitting the lower end of the substrate cover into the recess.
　また、前記基板カバーには、前記突部が挿通可能な挿通孔が形成され、前記突部は、前記挿通孔に挿通されることで、前記基板カバーを支持するものとすることができる。基板カバー取り付け時に、基板カバーの挿通孔を突部に挿通させることで、突部から基板カバーが落下する事態を抑制でき、より確実に基板カバーを支持することができる。 In addition, an insertion hole into which the protrusion can be inserted is formed in the substrate cover, and the protrusion can be inserted into the insertion hole to support the substrate cover. By inserting the insertion hole of the substrate cover into the protrusion when the substrate cover is attached, a situation where the substrate cover falls from the protrusion can be suppressed, and the substrate cover can be supported more reliably.
　また、前記突部の先端からは、前記基板カバーを前記シャーシとは反対側から覆う形で先端部が延びているものとすることができる。先端部にて基板カバーをシャーシとは反対側から覆うことで、突部から基板カバーが落下する事態を抑制でき、より確実に基板カバーを支持することができる。 Further, the tip end portion may extend from the tip end of the projection so as to cover the substrate cover from the side opposite to the chassis. By covering the substrate cover from the side opposite to the chassis at the front end portion, it is possible to suppress the situation where the substrate cover falls from the protrusion, and the substrate cover can be supported more reliably.
　また、前記回路基板は、前記底板に突設された複数の取付部に跨がる形で取り付けられており、前記突部は、前記複数の取付部のうち、少なくとも一つの取付部に形成されているものとすることができる。 Further, the circuit board is attached in such a manner as to straddle a plurality of attachment portions protruding from the bottom plate, and the protrusion is formed on at least one attachment portion among the plurality of attachment portions. Can be.
　また、前記突部は、前記シャーシと一体形成されているものとすることができる。このような構成とすれば、部品点数を削減することができ、コスト削減に寄与することが可能となる。 Further, the protrusion may be formed integrally with the chassis. With such a configuration, it is possible to reduce the number of parts and contribute to cost reduction.
　次に、上記課題を解決するために、本発明の表示装置は、上記照明装置と、前記照明装置からの光を利用して表示を行う表示パネルと、を備えることを特徴とする。 Next, in order to solve the above-described problem, a display device according to the present invention includes the above-described illumination device and a display panel that performs display using light from the illumination device.
　また、前記表示パネルとしては液晶を用いた液晶パネルを例示することができる。このような表示装置は液晶表示装置として、種々の用途、例えばテレビやパソコンのデスクトップ画面等に適用でき、特に大型画面用として好適である。 Also, as the display panel, a liquid crystal panel using liquid crystal can be exemplified. Such a display device can be applied as a liquid crystal display device to various uses, for example, a desktop screen of a television or a personal computer, and is particularly suitable for a large screen.
　次に、上記課題を解決するために、本発明のテレビ受信装置は、上記表示装置を備えることを特徴とする。 Next, in order to solve the above-described problem, a television receiver according to the present invention includes the display device.
（発明の効果）
　本発明によれば、基板カバーの取付作業を容易に行うことができる照明装置を提供することができる。 (The invention's effect)
ADVANTAGE OF THE INVENTION According to this invention, the illuminating device which can perform the attachment operation | work of a board | substrate cover easily can be provided.
本発明の実施形態１に係るテレビ受信装置の概略構成を示す分解斜視図。The disassembled perspective view which shows schematic structure of the television receiver which concerns on Embodiment 1 of this invention. 図１のテレビ受信装置が備える液晶表示装置の概略構成を示す分解斜視図。The disassembled perspective view which shows schematic structure of the liquid crystal display device with which the television receiver of FIG. 1 is provided. 液晶表示装置の長辺方向に沿った断面構成を示す断面図。Sectional drawing which shows the cross-sectional structure along the long side direction of a liquid crystal display device. 図３の液晶表示装置が備えるバックライト装置の裏面を示す平面図。The top view which shows the back surface of the backlight apparatus with which the liquid crystal display device of FIG. 3 is provided. 図４において基板カバーを取り付けた状態を拡大して示す拡大図。The enlarged view which expands and shows the state which attached the board | substrate cover in FIG. 基板カバー及びコントロール基板の取付構造を示す断面図（図５のＡ－Ａ線で切断した図）。Sectional drawing which shows the attachment structure of a board | substrate cover and a control board (The figure cut | disconnected by the AA line of FIG. 5). 本発明の実施形態２に係る突部を示す断面図。Sectional drawing which shows the protrusion concerning Embodiment 2 of this invention. 本発明の実施形態３に係る突部を示す断面図。Sectional drawing which shows the protrusion concerning Embodiment 3 of this invention. 本発明の実施形態４において、基板カバーを取り付けた状態を示す平面図。The top view which shows the state which attached the board | substrate cover in Embodiment 4 of this invention. 本発明の実施形態４に係る突部を示す断面図。Sectional drawing which shows the protrusion concerning Embodiment 4 of this invention.
　＜実施形態１＞
　本発明の実施形態１を図１ないし図６によって説明する。まず、液晶表示装置１０を備えたテレビ受信装置ＴＶの構成について説明する。図１は本実施形態のテレビ受信装置の概略構成を示す分解斜視図、図２は図１のテレビ受信装置が備える液晶表示装置の概略構成を示す分解斜視図、図３は図２の液晶表示装置の長辺方向に沿った断面構成を示す断面図である。なお、液晶表示装置１０（及びシャーシ１４）の長辺方向をＸ軸方向とし、短辺方向をＹ軸方向とし、図３における上下方向をＺ軸方向（表裏方向）としている。 <Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. First, the configuration of the television receiver TV including the liquid crystal display device 10 will be described. 1 is an exploded perspective view showing a schematic configuration of the television receiver of the present embodiment, FIG. 2 is an exploded perspective view showing a schematic configuration of a liquid crystal display device included in the television receiver of FIG. 1, and FIG. 3 is a liquid crystal display of FIG. It is sectional drawing which shows the cross-sectional structure along the long side direction of an apparatus. The long side direction of the liquid crystal display device 10 (and the chassis 14) is the X-axis direction, the short side direction is the Y-axis direction, and the vertical direction in FIG. 3 is the Z-axis direction (front and back direction).
　本実施形態に係るテレビ受信装置ＴＶは、図１に示すように、液晶表示装置１０と、当該液晶表示装置１０を挟むようにして収容する表裏両キャビネットＣａ，Ｃｂと、電源基板Ｐと、チューナーＴと、スタンドＳとを備えて構成される。液晶表示装置１０（表示装置）は、全体として横長の方形を成し、縦置き状態（短辺方向が鉛直方向に沿って配された状態で収容されている。なお、以下の説明においては、この縦置き状態における上下方向（図４の上下方向、Ｙ軸方向）を上下方向と呼ぶこととする。この液晶表示装置１０は、図２に示すように、液晶パネル１１（表示パネル）と、外部光源であるバックライト装置１２（照明装置）とを備え、これらが枠状のベゼル１３などにより一体的に保持されるようになっている。 As shown in FIG. 1, the television receiver TV according to the present embodiment includes a liquid crystal display device 10, front and back cabinets Ca and Cb that are accommodated so as to sandwich the liquid crystal display device 10, a power supply substrate P, and a tuner T. And a stand S. The liquid crystal display device 10 (display device) has a horizontally long rectangular shape as a whole, and is housed in a vertically placed state (a short side direction is arranged along the vertical direction. In the following description, The vertical direction in this vertically placed state (vertical direction in FIG. 4, Y-axis direction) is referred to as the vertical direction.This liquid crystal display device 10 includes a liquid crystal panel 11 (display panel), as shown in FIG. A backlight device 12 (illumination device) as an external light source is provided, and these are integrally held by a frame-like bezel 13 or the like.
　次に、液晶表示装置１０を構成する液晶パネル１１及びバックライト装置１２について説明する。液晶パネル１１は、一対のガラス基板が所定のギャップを隔てた状態で貼り合わせられるとともに、両ガラス基板間に液晶が封入された構成とされる。一方のガラス基板には、互いに直交するソース配線とゲート配線とに接続されたスイッチング素子（例えばＴＦＴ）と、そのスイッチング素子に接続された画素電極、さらには配向膜等が設けられ、他方のガラス基板には、Ｒ（赤色），Ｇ（緑色），Ｂ（青色）等の各着色部が所定配列で配置されたカラーフィルタや対向電極、さらには配向膜等が設けられている。なお、両基板の外側には偏光板１１ａ，１１ｂが取り付けられている（図３参照）。 Next, the liquid crystal panel 11 and the backlight device 12 constituting the liquid crystal display device 10 will be described. The liquid crystal panel 11 is configured such that a pair of glass substrates are bonded together with a predetermined gap therebetween, and liquid crystal is sealed between the glass substrates. 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. Note that polarizing plates 11a and 11b are attached to the outside of both substrates (see FIG. 3).
　バックライト装置１２は、図２に示すように、光出射面側（液晶パネル１１側）に開口部１４ｂを有する略箱型をなすシャーシ１４と、シャーシ１４の開口部１４ｂを覆うようにして取り付けられる拡散板１５ａと、拡散板１５ａと液晶パネル１１との間に配される複数の光学シート１５ｂと、シャーシ１４の長辺に沿って配され拡散板１５ａの長辺縁部をシャーシ１４との間で挟んで保持するフレーム１６とを備える。 As shown in FIG. 2, the backlight device 12 is attached so as to cover a substantially box-shaped chassis 14 having an opening 14 b on the light emitting surface side (liquid crystal panel 11 side), and the opening 14 b of the chassis 14. Diffusion plate 15a, a plurality of optical sheets 15b arranged between the diffusion plate 15a and the liquid crystal panel 11, and a long side edge of the diffusion plate 15a arranged along the long side of the chassis 14 with the chassis 14 And a frame 16 that is held between them.
　さらに、シャーシ１４内には、冷陰極管１７（光源）と、冷陰極管１７をシャーシ１４に取り付けるためのランプクリップ１８と、冷陰極管１７の各端部において電気的接続の中継を担う中継コネクタ１９と、冷陰極管１７群の端部及び中継コネクタ１９群を一括して覆うホルダ２０とが収容されている。なお、当該バックライト装置１２においては、冷陰極管１７よりも拡散板１５ａ側が光出射側となっている。 Further, in the chassis 14, a cold cathode tube 17 (light source), a lamp clip 18 for attaching the cold cathode tube 17 to the chassis 14, and a relay for relaying electrical connection at each end of the cold cathode tube 17. A connector 19 and a holder 20 that collectively covers the end of the cold cathode tube 17 group and the relay connector 19 group are accommodated. In the backlight device 12, the diffusion plate 15 a side is a light emission side from the cold cathode tube 17.
　シャーシ１４は、金属製の板状部材が板金成形されたものとされ、矩形平板状の底板１４ａと、その各辺から立ち上がり略Ｕ字状に折り返された外縁部２１（短辺方向の短辺外縁部２１ａ及び長辺方向の長辺外縁部２１ｂ）とからなる略箱型をなしている。シャーシ１４の底板１４ａにおいて、その長辺方向の両端部には、中継コネクタ１９を取り付けるための複数の取付孔２２が貫通形成されている。さらに、シャーシ１４の長辺外縁部２１ｂの上面には、図３に示すように、固定孔１４ｃが貫通形成されており、例えばネジ等によりベゼル１３、フレーム１６、及びシャーシ１４等を一体化することが可能とされている。なお、シャーシ１４の材質は金属に限定されず適宜変更可能である。 The chassis 14 is made of a metal plate-like member formed by sheet metal, and has a rectangular flat plate-like bottom plate 14a and an outer edge portion 21 (short side in the short side direction) that rises from each side and is folded back into a substantially U shape. It has a substantially box shape including an outer edge portion 21a and a long side outer edge portion 21b) in the long side direction. In the bottom plate 14 a of the chassis 14, a plurality of attachment holes 22 for attaching the relay connector 19 are formed through both ends of the long side direction. Further, as shown in FIG. 3, a fixing hole 14c is formed through the upper surface of the long-side outer edge portion 21b of the chassis 14, and the bezel 13, the frame 16, the chassis 14 and the like are integrated by screws or the like, for example. It is possible. The material of the chassis 14 is not limited to metal and can be changed as appropriate.
　図２または図６に示すように、シャーシ１４の底板１４ａの内面側（冷陰極管１７と対向する面側）には光反射シート２３が配設されている。光反射シート２３は、合成樹脂製とされ、その表面が反射性に優れた白色とされており、シャーシ１４の底板１４ａの内面に沿ってそのほぼ全域を覆うように敷かれている（図３では光反射シートは不図示）。この光反射シート２３により、冷陰極管１７から出射された光を拡散板１５ａ側に反射させることが可能となっている。 As shown in FIG. 2 or FIG. 6, a light reflection sheet 23 is disposed on the inner surface side (the surface side facing the cold cathode tube 17) of the bottom plate 14 a of the chassis 14. The light reflecting sheet 23 is made of synthetic resin, and the surface thereof is white with excellent reflectivity, and is laid so as to cover almost the entire region along the inner surface of the bottom plate 14a of the chassis 14 (FIG. 3). (The light reflection sheet is not shown). With this light reflecting sheet 23, it is possible to reflect the light emitted from the cold cathode tube 17 toward the diffusion plate 15a.
　一方、シャーシ１４の開口部１４ｂ側には拡散板１５ａ及び光学シート１５ｂが配設されている。拡散板１５ａは、合成樹脂製の板状部材に光散乱粒子が分散配合されてなり、管状光源たる冷陰極管１７から出射される線状の光を拡散する機能を有する。拡散板１５ａの短辺縁部は上記したようにホルダ２０の第１面２０ａ上に載置されており、上下方向の拘束力を受けないものとされている。一方、拡散板１５ａの長辺縁部は、シャーシ１４とフレーム１６とに挟まれることで固定されている。 On the other hand, a diffusion plate 15a and an optical sheet 15b are disposed on the opening 14b side of the chassis 14. The diffusion plate 15a is formed by dispersing light scattering particles in a synthetic resin plate-like member and has a function of diffusing linear light emitted from the cold cathode tube 17 serving as a tubular light source. As described above, the short side edge portion of the diffusion plate 15a is placed on the first surface 20a of the holder 20, and is not subjected to vertical restraining force. On the other hand, the long side edge of the diffusion plate 15 a is fixed by being sandwiched between the chassis 14 and the frame 16.
　拡散板１５ａ上に配される光学シート１５ｂは、拡散板１５ａ側から順に、拡散シート、レンズシート、反射型偏光板が積層されたものであり、冷陰極管１７から出射され、拡散板１５ａを通過した光を面状の光とする機能を有する。当該光学シート１５ｂの上面側には液晶パネル１１が設置され、当該光学シート１５ｂは拡散板１５ａと液晶パネル１１とにより挟持されている。 The optical sheet 15b disposed on the diffusion plate 15a is a laminate of a diffusion sheet, a lens sheet, and a reflective polarizing plate in order from the diffusion plate 15a side. The optical sheet 15b is emitted from the cold cathode tube 17 and passes through the diffusion plate 15a. It has a function of converting the light that has passed through into planar light. The liquid crystal panel 11 is installed on the upper surface side of the optical sheet 15 b, and the optical sheet 15 b is sandwiched between the diffusion plate 15 a and the liquid crystal panel 11.
　冷陰極管１７は、細長い管状をなしており、その長さ方向（軸方向）をシャーシ１４の長辺方向と一致させた状態で、かつ多数本（本実施形態では２０本）が互いに平行に並んだ状態でシャーシ１４内に収容されている（図２参照）。これら冷陰極管１７の各端部には駆動電力を受容する端子（図示せず）が備えられ、当該端部が中継コネクタ１９に嵌め込まれ、これら中継コネクタ１９を被覆するようにホルダ２０が取り付けられている。 The cold-cathode tube 17 has a long and narrow tubular shape, and a large number (20 in this embodiment) are parallel to each other in a state in which the length direction (axial direction) thereof coincides with the long side direction of the chassis 14. They are housed in the chassis 14 in a line-up state (see FIG. 2). Each end of the cold cathode tubes 17 is provided with a terminal (not shown) for receiving driving power, the end is fitted into the relay connector 19, and a holder 20 is attached so as to cover the relay connector 19. It has been.
　冷陰極管１７の端部を覆うホルダ２０は、白色を呈する合成樹脂製とされ、シャーシ１４の短辺方向に沿って延びる細長い略箱型をなしている。当該ホルダ２０は、シャーシ１４の短辺外縁部２１ａと一部重畳した状態で配されており、短辺外縁部２１ａとともに当該バックライト装置１２の側壁を構成している。図３に示すように、ホルダ２０のうちシャーシ１４の折返し外縁部２１ａと対向する面からは挿入ピン２４が突出しており、当該挿入ピン２４がシャーシ１４の短辺外縁部２１ａの上面に形成された挿入孔２５に挿入されることで、当該ホルダ２０はシャーシ１４に取り付けられるものとされている。 The holder 20 that covers the end of the cold cathode tube 17 is made of a white synthetic resin and has an elongated, substantially box shape extending along the short side direction of the chassis 14. The holder 20 is arranged so as to partially overlap the short side outer edge portion 21a of the chassis 14, and constitutes the side wall of the backlight device 12 together with the short side outer edge portion 21a. As shown in FIG. 3, the insertion pin 24 protrudes from the surface of the holder 20 that faces the folded outer edge portion 21 a of the chassis 14, and the insertion pin 24 is formed on the upper surface of the short-side outer edge portion 21 a of the chassis 14. The holder 20 is attached to the chassis 14 by being inserted into the insertion hole 25.
　ホルダ２０の階段状面は、図３に示すように、シャーシ１４の底板１４ａと平行な３面からなり、最も低い位置にある第１面２０ａには拡散板１５ａの短辺縁部が載置されている。さらに、第１面２０ａからは、シャーシ１４の底板１４ａに向けて傾斜する傾斜カバー２６が延出している。ホルダ２０の階段状面の第２面２０ｂには、液晶パネル１１の短辺縁部が載置されている。ホルダ２０の階段状面のうち最も高い位置にある第３面２０ｃは、シャーシ１４の短辺外縁部２１ａと重畳する位置に配され、ベゼル１３と接触するものとされている。 As shown in FIG. 3, the stepped surface of the holder 20 consists of three surfaces parallel to the bottom plate 14a of the chassis 14, and the short side edge of the diffusion plate 15a is placed on the first surface 20a at the lowest position. Has been. Further, an inclined cover 26 that extends toward the bottom plate 14a of the chassis 14 extends from the first surface 20a. The short side edge portion of the liquid crystal panel 11 is placed on the second surface 20 b of the stepped surface of the holder 20. The third surface 20 c at the highest position among the stepped surfaces of the holder 20 is disposed at a position overlapping the short side outer edge portion 21 a of the chassis 14 and is in contact with the bezel 13.
　図２及び図４に示すように、シャーシ１４の底板１４ａの外面側（冷陰極管１７とは反対側、裏面側）には、インバータ基板３０及びコントロール基板４０が取り付けられている。なお、上述した電源基板Ｐ（図１参照、図４では図示せず）は、インバータ基板３０やコントロール基板４０などと電気的に接続され、これらの各基板に電力を供給する電力供給源とされている。 As shown in FIGS. 2 and 4, an inverter board 30 and a control board 40 are attached to the outer surface side of the bottom plate 14a of the chassis 14 (on the opposite side to the cold cathode tube 17 and the back surface side). The above-described power supply board P (see FIG. 1, not shown in FIG. 4) is electrically connected to the inverter board 30 and the control board 40, and is a power supply source that supplies power to each of these boards. ing.
　インバータ基板３０は、シャーシ１４の長辺方向の両端部にそれぞれ設けられ、シャーシ１４の短辺方向に沿った長い方形状をなしている。各インバータ基板３０は、コネクタ２７及びハーネス２８を介して冷陰極管１７と電気的に接続されている。また、インバータ基板３０は、電源基板Ｐから入力される入力電圧をトランスなどにより構成されるインバータ回路によって昇圧し、入力電圧よりも高い出力電圧を冷陰極管１７へ出力するなどして冷陰極管１７の点灯（又は消灯）を制御する機能を有する。 The inverter board 30 is provided at both ends of the long side direction of the chassis 14 and has a long rectangular shape along the short side direction of the chassis 14. Each inverter board 30 is electrically connected to the cold cathode tube 17 via a connector 27 and a harness 28. Further, the inverter board 30 boosts the input voltage input from the power supply board P by an inverter circuit constituted by a transformer or the like, and outputs an output voltage higher than the input voltage to the cold cathode tube 17. 17 has a function of controlling turning on (or turning off).
　コントロール基板４０（回路基板）は、図４に示すように、方形状をなしており、シャーシ１４の長辺方向の中央部、かつシャーシ１４の短辺方向において一方に偏った位置（図４の上側）に配されている。コントロール基板４０は、合成樹脂製（例えば紙フェノール製またはガラスエポキシ樹脂製など）の基板上に回路部品４１が実装されており、チューナーＴからのテレビ信号などの各種入力信号を液晶駆動用の信号に変換し、その変換した液晶駆動用の信号を液晶パネル１１に供給する機能を有する。 As shown in FIG. 4, the control board 40 (circuit board) has a rectangular shape, and is centered in the long side direction of the chassis 14 and a position biased to one side in the short side direction of the chassis 14 (FIG. 4). (Upper side). The control board 40 has a circuit component 41 mounted on a board made of synthetic resin (for example, made of paper phenol or glass epoxy resin), and receives various input signals such as TV signals from the tuner T as signals for driving the liquid crystal. And a function of supplying the converted liquid crystal driving signal to the liquid crystal panel 11.
　シャーシ１４の底板１４ａには、図２及び図５に示すように、コントロール基板４０を覆う形で基板カバー６０が取り付けられている。また、各インバータ基板３０を覆う形で基板カバー３１が底板１４ａに、それぞれ取り付けられている。このような基板カバー６０，３１は、各基板４０，３０の保護を図るとともに、基板駆動時など基板が高温となった際に、各基板４０，３０に手などが触れる事態を防止する機能を担っている。なお、図４は、基板カバー６０，３１をシャーシ１４から取り外した状態を示している。 As shown in FIGS. 2 and 5, a board cover 60 is attached to the bottom plate 14 a of the chassis 14 so as to cover the control board 40. A substrate cover 31 is attached to the bottom plate 14 a so as to cover each inverter substrate 30. Such a substrate cover 60, 31 has a function of protecting the substrates 40, 30 and preventing the touch of the substrates 40, 30 when the substrate becomes hot, such as when the substrate is driven. I'm in charge. FIG. 4 shows a state in which the substrate covers 60 and 31 are removed from the chassis 14.
　基板カバー６０は、図２及び図６に示すように、板状をなしており、シャーシ１４側に向かって開口された断面視略Ｕ字型をなす中央部６１と、中央部６１においてシャーシ１４の短辺方向の両端（図６の上下両端）から底板１４ａに沿ってそれぞれ延びる端部６２（上端部６２Ａ及び下端部６２Ｂ）と、を備えている。なお、図６においては、コントロール基板４０及び基板カバー６０を断面視にて図示してある。 As shown in FIGS. 2 and 6, the substrate cover 60 has a plate shape, and has a central portion 61 having a substantially U shape in cross section opened toward the chassis 14, and the chassis 14 in the central portion 61. End 62 (upper end 62A and lower end 62B) extending along the bottom plate 14a from both ends in the short side direction (upper and lower ends in FIG. 6). In FIG. 6, the control substrate 40 and the substrate cover 60 are shown in a sectional view.
　次に、シャーシ１４に対するコントロール基板４０及び基板カバー６０の取付構造について説明する。シャーシ１４の底板１４ａにおけるシャーシ１４外側の面において、コントロール基板４０の取付箇所には、図５及び図６に示すように、取付台座部５０（取付部、図５では一部破線で示す）が複数形成されており、コントロール基板４０は、複数の取付台座部５０に跨る形で配されている。また、コントロール基板４０は、各取付台座部５０に対して、ビスＢ１によって、取り付けられている。 Next, the mounting structure of the control board 40 and the board cover 60 to the chassis 14 will be described. As shown in FIGS. 5 and 6, on the surface of the bottom plate 14 a of the chassis 14 on the outer side of the chassis 14, an attachment base portion 50 (attachment portion, partially indicated by a broken line in FIG. 5) is provided at the attachment location of the control board 40. A plurality of control boards 40 are formed so as to straddle the plurality of mounting base parts 50. Further, the control board 40 is attached to each mounting base portion 50 by screws B1.
　取付台座部５０は、図６に示すように、底板１４ａの一部をシャーシ１４外面側に突き出すことで形成されている（突設されている）。取付台座部５０は、図５に示すように、方形状をなすコントロール基板４０の４隅に対応する位置にそれぞれ形成されている。図５に示す上側の取付台座部５０（符号５０Ａで示す）は、略半球状をなしている。一方、図５に示す下側の取付台座部５０（符号５０Ｂで示す）は平面視において、図５の上下方向に長い略方形状をなしている。 The mounting base 50 is formed by protruding a part of the bottom plate 14a toward the outer surface side of the chassis 14 as shown in FIG. As shown in FIG. 5, the mounting base 50 is formed at positions corresponding to the four corners of the control board 40 having a square shape. The upper mounting base 50 (indicated by reference numeral 50A) shown in FIG. 5 has a substantially hemispherical shape. On the other hand, the lower mounting base 50 (indicated by reference numeral 50B) shown in FIG. 5 has a substantially rectangular shape that is long in the vertical direction in FIG.
　図６に示すように、各取付台座部５０には、ビスＢ１が挿通可能な円形状の取付孔５１がそれぞれ形成されている。そして、取付台座部５０Ｂには、その一部をシャーシ１４外面側に突き出した形（つまり、シャーシ１４と一体形成）で突部５２が形成されている。突部５２は、縦置き状態（設置状態）において、隣接する取付孔５１の下方に配されており、基板カバー６０の下側の端部６２を支持する構成となっている。 As shown in FIG. 6, each mounting base portion 50 is formed with a circular mounting hole 51 into which the screw B <b> 1 can be inserted. And the protrusion 52 is formed in the mounting base part 50B in the form which protruded one part to the chassis 14 outer surface side (namely, integral formation with the chassis 14). The protrusion 52 is arranged below the adjacent mounting hole 51 in the vertically placed state (installed state), and is configured to support the lower end 62 of the substrate cover 60.
　図５に示すように、突部５２は、略四角柱状をなしている。突部５２は、その突き出し方向が、シャーシ１４の底板１４ａの板面（Ｘ軸及びＹ軸方向、図６では上下方向）と直交する方向と一致する形で延びている。 As shown in FIG. 5, the protrusion 52 has a substantially quadrangular prism shape. The protruding portion 52 extends in a form in which the protruding direction coincides with a direction orthogonal to the plate surface of the bottom plate 14a of the chassis 14 (X-axis and Y-axis directions, the vertical direction in FIG. 6).
　突部５２は、その突出長さＬ１が、基板カバー６０の板厚ｔ１とコントロール基板４０の板厚ｔ２とを合わせた長さ以上の長さとなる形で形成されており、図６に示すように、コントロール基板４０及び基板カバー６０を下方から支持する構成となっている。なお、突部５２の形状は、柱状に限定されるものではなく、適宜変更可能である。例えば、突部５２を円柱状としてもよい。 The protrusion 52 is formed so that the protrusion length L1 is not less than the sum of the plate thickness t1 of the substrate cover 60 and the plate thickness t2 of the control substrate 40, as shown in FIG. In addition, the control board 40 and the board cover 60 are supported from below. In addition, the shape of the protrusion 52 is not limited to a columnar shape, and can be changed as appropriate. For example, the protrusion 52 may be a columnar shape.
　コントロール基板４０には、ビスＢ１を挿通可能な円形状のビス挿通孔４５が形成されている。そして、基板カバー６０の端部６２においてビス挿通孔４５と重畳する箇所には、円形状のビス挿通孔６５が形成されている。これにより、ビス挿通孔４５，６５の双方にビスＢ１をシャーシ１４外側から挿通させた後に、取付台座部５０の取付孔５１にビスＢ１の先端部を螺合させることで、シャーシ１４に対するコントロール基板４０及び基板カバー６０の取付が可能な構成となっている。 The control board 40 is formed with a circular screw insertion hole 45 into which the screw B1 can be inserted. A circular screw insertion hole 65 is formed at a position overlapping the screw insertion hole 45 at the end 62 of the substrate cover 60. As a result, the screw B1 is inserted into both the screw insertion holes 45 and 65 from the outside of the chassis 14, and then the tip end of the screw B1 is screwed into the mounting hole 51 of the mounting base 50, whereby the control board for the chassis 14 is secured. 40 and the substrate cover 60 can be attached.
　また、上述したように取付台座部５０は、底板１４ａの一部をシャーシ１４外面側に突き出すことで形成されている。このため、ビスＢ１を取付孔５１の内周に螺合させた際に、ビスＢ１の先端が底板１４ａに配設された光反射シート２３と干渉する事態を抑制可能となっている。 Further, as described above, the mounting base 50 is formed by protruding a part of the bottom plate 14a to the outer surface side of the chassis 14. For this reason, when screw B1 is screwed into the inner periphery of mounting hole 51, it is possible to suppress a situation in which the tip of screw B1 interferes with light reflecting sheet 23 provided on bottom plate 14a.
　また、本実施形態においては、シャーシ１４の底板１４ａにおいて、インバータ基板３０の長辺方向両端に対応する箇所にも取付台座部５０Ａ、取付台座部５０Ｂがそれぞれ形成されており、インバータ基板３０及び基板カバー３１をビスＢ１を介して取り付け可能な構成となっている。また、取付台座部５０Ｂにも突部５２が形成されており、インバータ基板３０及び基板カバー３１を支持可能な構成となっている。なお、インバータ基板３０及び基板カバー３１を取付台座部５０に取り付けるための取付構造（突部５２及びビスＢ１を用いる構造）は、コントロール基板４０及び基板カバー６０を取付台座部５０に取り付けるための取付構造と同じであるため、詳しい説明は省略する。 In the present embodiment, the mounting base 50A and the mounting base 50B are also formed at locations corresponding to both ends of the inverter board 30 in the long side direction on the bottom plate 14a of the chassis 14, respectively. The cover 31 can be attached via the screw B1. Further, a protrusion 52 is also formed on the mounting base portion 50B, so that the inverter substrate 30 and the substrate cover 31 can be supported. The mounting structure for mounting the inverter board 30 and the board cover 31 to the mounting base 50 (structure using the protrusion 52 and the screw B1) is the mounting for mounting the control board 40 and the board cover 60 to the mounting base 50. Since it is the same as the structure, detailed description is omitted.
　次に、本実施形態のバックライト装置１２において、シャーシ１４に対してコントロール基板４０及び基板カバー６０を取り付ける手順について説明する。本実施形態においては、シャーシ１４を保持具（図示せず）などで縦置き状態とし、この縦置き状態において、コントロール基板４０及び基板カバー６０の取り付けが行われる。 Next, a procedure for attaching the control board 40 and the board cover 60 to the chassis 14 in the backlight device 12 of the present embodiment will be described. In the present embodiment, the chassis 14 is vertically placed with a holder (not shown) or the like, and the control board 40 and the board cover 60 are attached in this vertically placed state.
　なお、ここでいう縦置き状態とは、シャーシ１４の底板１４ａの板面１４ａ１が鉛直方向に沿う形でシャーシ１４を設置した設置状態（図４及び図６の状態）のことである。また、この縦置き状態においては、コントロール基板４０は、底板１４ａにおける上部であって左右方向における中央部に配される。 In addition, a vertical installation state here is an installation state (state of FIG.4 and FIG.6) which installed the chassis 14 in the form where the plate | board surface 14a1 of the bottom plate 14a of the chassis 14 followed a perpendicular direction. In this vertically placed state, the control board 40 is arranged at the upper part of the bottom plate 14a and at the central part in the left-right direction.
　まず、図６に示すように、各取付台座部５０Ｂの各突部５２における上面５２Ａにコントロール基板４０の下端部を載せる。これにより、コントロール基板４０が突部５２によって支持される。 First, as shown in FIG. 6, the lower end portion of the control board 40 is placed on the upper surface 52A of each protrusion 52 of each mounting base portion 50B. As a result, the control board 40 is supported by the protrusions 52.
　続いて、コントロール基板４０をシャーシ１４外側（図６の右側）から覆う形で基板カバー６０を配する。この時、基板カバー６０の下端部６２Ｂを各突部５２における上面５２Ａに載せる。これにより、図５に示すように、両突部５２に跨る形で基板カバー６０が支持される。なお、この状態では、基板カバー６０の各端部６２とコントロール基板４０の上下両側の周端部とが、それぞれ平面視において重畳する形で配される。 Subsequently, the substrate cover 60 is disposed so as to cover the control substrate 40 from the outside of the chassis 14 (right side in FIG. 6). At this time, the lower end 62B of the substrate cover 60 is placed on the upper surface 52A of each protrusion 52. Thereby, as shown in FIG. 5, the substrate cover 60 is supported so as to straddle both protrusions 52. In this state, the end portions 62 of the substrate cover 60 and the peripheral end portions on the upper and lower sides of the control substrate 40 are arranged so as to overlap each other in plan view.
　次に、コントロール基板４０のビス挿通孔４５及び基板カバー６０のビス挿通孔６５の双方にビスＢ１をシャーシ１４外側から挿通させ、取付台座部５０の取付孔５１にビスＢ１の先端部を螺合させる。これにより、シャーシ１４に対するコントロール基板４０及び基板カバー６０の取付が完了する。 Next, the screw B1 is inserted into both the screw insertion hole 45 of the control board 40 and the screw insertion hole 65 of the board cover 60 from the outside of the chassis 14, and the tip of the screw B1 is screwed into the mounting hole 51 of the mounting base 50. Let Thereby, the attachment of the control board 40 and the board cover 60 to the chassis 14 is completed.
　以上、説明したように、本実施形態においては、冷陰極管１７と、冷陰極管１７が収容されたシャーシ１４と、シャーシ１４の底板１４ａに取り付けられたコントロール基板４０と、底板１４ａに取り付けられ、コントロール基板４０を覆う形で配された基板カバー６０と、を備え、底板１４ａには、基板カバー６０側に突出された突部５２が設けられ、底板１４ａの板面１４ａ１が鉛直方向（Ｙ軸方向）に沿う形でシャーシ１４が設置された設置状態において、突部５２は、基板カバー６０を支持することに特徴を有する。 As described above, in the present embodiment, the cold cathode tube 17, the chassis 14 in which the cold cathode tube 17 is accommodated, the control board 40 attached to the bottom plate 14a of the chassis 14, and the bottom plate 14a. And a substrate cover 60 disposed so as to cover the control substrate 40. The bottom plate 14a is provided with a protrusion 52 projecting toward the substrate cover 60, and the plate surface 14a1 of the bottom plate 14a extends in the vertical direction (Y In the installed state in which the chassis 14 is installed along the axial direction), the protrusion 52 is characterized by supporting the substrate cover 60.
　本実施形態においては、シャーシ１４の底板１４ａの板面１４ａ１が鉛直方向に沿う形でシャーシ１４が設置された設置状態においては、突部５２によって基板カバー６０を支持する構成となっている。これにより、上記設置状態において、シャーシ１４に基板カバー６０を取り付ける際に、基板カバー６０の落下を抑制でき、取付に係る作業性を向上させることができる。 In the present embodiment, the board cover 60 is supported by the protrusion 52 in the installed state in which the chassis 14 is installed such that the plate surface 14a1 of the bottom plate 14a of the chassis 14 is along the vertical direction. Thereby, when the board cover 60 is attached to the chassis 14 in the installation state, the fall of the board cover 60 can be suppressed, and workability related to the attachment can be improved.
　上記構成において、設置状態において、突部５２は、基板カバー６０の下端部６２Ｂを下方から支持するものとすることができる。基板カバー６０の下端部６２Ｂを下方から支持した状態で、基板カバー６０の取り付けを行うことができる。このため、突部５２に支持された基板カバー６０が、仮に突部５２から落下する場合であっても、基板カバー６０は、突部５２との当接箇所を回転中心として、回路基板から遠ざかる方向に回転する形で落下する（基板カバー６０の回転方向を図６の矢線Ｐ１で示す）。 In the above configuration, in the installed state, the protrusion 52 can support the lower end 62B of the substrate cover 60 from below. The substrate cover 60 can be attached with the lower end 62B of the substrate cover 60 supported from below. For this reason, even if the substrate cover 60 supported by the protrusion 52 falls from the protrusion 52, the substrate cover 60 moves away from the circuit board with the contact point with the protrusion 52 as the center of rotation. It falls in the form of rotating in the direction (the direction of rotation of the substrate cover 60 is indicated by the arrow P1 in FIG. 6).
　仮に突部５２がない構成の場合は、底板１４ａの板面１４ａ１に沿って基板カバー６０が落下する。つまり、図６の状態から真下に基板カバー６０が落下する可能性があり、コントロール基板４０（回路部品４１など）に基板カバー６０が接触するおそれがある。この点、本実施形態においては、突部５２を備えることによって、底板１４ａの板面１４ａ１に沿って基板カバー６０が落下する事態を抑制でき、コントロール基板４０（ひいては、その実装部品）を保護できる。 If the projection 52 is not provided, the substrate cover 60 falls along the plate surface 14a1 of the bottom plate 14a. That is, there is a possibility that the substrate cover 60 falls from the state shown in FIG. 6 and the substrate cover 60 may come into contact with the control substrate 40 (circuit component 41 or the like). In this respect, in the present embodiment, by providing the protrusion 52, it is possible to suppress the situation in which the substrate cover 60 falls along the plate surface 14a1 of the bottom plate 14a, and to protect the control substrate 40 (and in turn, its mounted components). .
　また、コントロール基板４０は、シャーシ１４に突設された複数の取付台座部５０に跨がる形で取り付けられており、突部５２は、複数の取付台座部５０のうち、少なくとも一つの取付台座部５０に形成されている。 The control board 40 is attached so as to straddle a plurality of mounting base parts 50 projecting from the chassis 14, and the projecting part 52 is at least one of the plurality of mounting base parts 50. It is formed in the part 50.
　また、突部５２は、シャーシ１４と一体形成されている。このような構成とすれば、部品点数を削減することができ、コスト削減に寄与することが可能となる。 Further, the protrusion 52 is formed integrally with the chassis 14. With such a configuration, it is possible to reduce the number of parts and contribute to cost reduction.
　＜実施形態２＞
　次に、本発明の実施形態２を図７によって説明する。上記実施形態と同一部分には、同一符号を付して重複する説明を省略する。本実施形態のバックライト装置１１２においては、突部の構成が上記実施形態と異なる。本実施形態の突部１５２には、下方に凹む形状の凹部１５２Ａが形成されており、この凹部１５２Ａに基板カバー６０の下端部６２Ｂ及びコントロール基板４０の下端部を嵌合させることが可能となっている。 <Embodiment 2>
Next, Embodiment 2 of the present invention will be described with reference to FIG. The same parts as those in the above embodiment are denoted by the same reference numerals, and redundant description is omitted. In the backlight device 112 of this embodiment, the configuration of the protrusions is different from that of the above embodiment. The protrusion 152 of the present embodiment is formed with a recess 152A that is recessed downward, and the lower end 62B of the substrate cover 60 and the lower end of the control substrate 40 can be fitted into the recess 152A. ing.
　このような構成とすれば、基板カバー６０を取り付ける際に、基板カバー６０の下端部６２Ｂを凹部１５２Ａに嵌合させることで、突部１５２から基板カバー６０が落下する事態を抑制できる。なお、本実施形態では、凹部１５２Ａに基板カバー６０及びコントロール基板４０の双方を嵌合させる構成としたが、これに限定されない。例えば、凹部１５２Ａに基板カバー６０のみを嵌合させる構成としてもよい。 With this configuration, when the substrate cover 60 is attached, the lower end 62B of the substrate cover 60 is fitted into the recess 152A, so that the situation where the substrate cover 60 falls from the protrusion 152 can be suppressed. In the present embodiment, both the substrate cover 60 and the control substrate 40 are fitted in the recess 152A, but the present invention is not limited to this. For example, a configuration may be adopted in which only the substrate cover 60 is fitted into the recess 152A.
　＜実施形態３＞
　次に、本発明の実施形態３を図８によって説明する。上記実施形態と同一部分には、同一符号を付して重複する説明を省略する。本実施形態のバックライト装置２１２においては、突部に係る構成が上記実施形態と異なる。本実施形態の突部２５２は、シャーシ１４と別部品で構成された板状の部材とされる。 <Embodiment 3>
Next, Embodiment 3 of the present invention will be described with reference to FIG. The same parts as those in the above embodiment are denoted by the same reference numerals, and redundant description is omitted. In the backlight device 212 of the present embodiment, the configuration relating to the protrusions is different from that of the above embodiment. The protrusion 252 of the present embodiment is a plate-like member that is configured as a separate part from the chassis 14.
　突部２５２は、底板１４ａの板面１４ａ１に対して交差する方向に対して、下方に傾斜する形で突き出している。突部２５２の先端からは、基板カバー２６０をシャーシ１４とは反対側（図８の右側）から覆う形で先端部２５３が延びている。つまり、突部２５２と先端部２５３とは、断面視において略Ｌ字状をなす部材を構成している。このように、先端部２５３にて基板カバー２６０の下端部２６２Ｂをシャーシ１４とは反対側から覆うことで、突部２５２から基板カバー２６０が落下する事態を抑制でき、より確実に基板カバー２６０を支持することができる。 The protrusion 252 protrudes in a downwardly inclined manner with respect to the direction intersecting the plate surface 14a1 of the bottom plate 14a. From the tip of the protrusion 252, the tip 253 extends so as to cover the substrate cover 260 from the side opposite to the chassis 14 (the right side in FIG. 8). That is, the protrusion 252 and the tip 253 constitute a substantially L-shaped member in cross-sectional view. Thus, by covering the lower end portion 262B of the substrate cover 260 from the side opposite to the chassis 14 at the front end portion 253, a situation in which the substrate cover 260 falls from the protrusion 252 can be suppressed, and the substrate cover 260 can be more securely attached. Can be supported.
　また、上記実施形態では、コントロール基板４０のビス挿通孔４５及び基板カバー６０のビス挿通孔６５の双方にビスＢ１を貫通させることで、コントロール基板４０及び基板カバー６０をシャーシ１４に取り付ける構成、言い換えると、コントロール基板４０及び基板カバー６０を同時に取り付ける構成とした。これに対して、本実施形態においては、コントロール基板４０及び基板カバー２６０をそれぞれ別のビスＢ１でシャーシ１４に対して個別に取り付けてある。つまり、コントロール基板４０と基板カバー２６０が別々に固定されている。このため、コントロール基板４０は突部２５２に支持されておらず、基板カバー２６０のみ突部２５２に支持される構成となっている。 In the above-described embodiment, the control board 40 and the board cover 60 are attached to the chassis 14 by passing the screws B1 through both the screw insertion holes 45 of the control board 40 and the screw insertion holes 65 of the board cover 60, in other words. And the control board 40 and the board | substrate cover 60 were set as the structure attached simultaneously. On the other hand, in this embodiment, the control board 40 and the board cover 260 are individually attached to the chassis 14 with different screws B1. That is, the control board 40 and the board cover 260 are fixed separately. For this reason, the control board 40 is not supported by the protrusions 252, and only the substrate cover 260 is supported by the protrusions 252.
　＜実施形態４＞
　次に、本発明の実施形態４を図９及び図１０によって説明する。上記実施形態と同一部分には、同一符号を付して重複する説明を省略する。本実施形態のバックライト装置３１２においては、突部に係る構成が上記実施形態と異なる。本実施形態の突部３５２は、底板１４ａから延びる基端部３５２Ｂと、基端部３５２Ｂに対して上方に折れ曲がる形で延びる先端部３５２Ａとから構成され、全体としては断面視略Ｌ字状をなしている。 <Embodiment 4>
Next, a fourth embodiment of the present invention will be described with reference to FIGS. The same parts as those in the above embodiment are denoted by the same reference numerals, and redundant description is omitted. In the backlight device 312 of the present embodiment, the configuration related to the protrusion is different from that of the above embodiment. The protrusion 352 of the present embodiment includes a base end portion 352B extending from the bottom plate 14a and a front end portion 352A extending so as to bend upward with respect to the base end portion 352B. There is no.
　基板カバー３６０の下端部３６２Ｂには、図９に示すように、各突部３５２に対応して挿通孔３６３がそれぞれ形成されている。挿通孔３６３は、方形状をなしており、突部３５２が挿通可能とされる。本実施形態では、突部３５２を挿通孔３６３に挿通することで、基板カバー３６０を支持可能な構成となっている。このような構成とすれば、基板カバー３６０を取り付ける際に、基板カバー３６０の挿通孔３６３を突部３５２に挿通させることで、突部３５２から基板カバー３６０が落下する事態を抑制でき、より確実に基板カバー３６０を支持することができる。なお、挿通孔３６３の形状は方形状に限定されず適宜変更可能である。 As shown in FIG. 9, insertion holes 363 are respectively formed in the lower end portion 362 </ b> B of the substrate cover 360 corresponding to the protrusions 352. The insertion hole 363 has a rectangular shape, and the protrusion 352 can be inserted therethrough. In this embodiment, the board cover 360 can be supported by inserting the protrusion 352 into the insertion hole 363. With such a configuration, when the substrate cover 360 is attached, by inserting the insertion hole 363 of the substrate cover 360 into the protrusion 352, the situation in which the substrate cover 360 falls from the protrusion 352 can be suppressed, and more reliably. The substrate cover 360 can be supported. Note that the shape of the insertion hole 363 is not limited to a square shape and can be changed as appropriate.
　また、本実施形態においては、突部３５２の先端部３５２Ａを挿通孔３６３の縁部に対して、シャーシ１４の外側（シャーシ１４側とは反対側）から係止させることができる。このようにすれば、突部３５２が挿通孔３６３から抜けにくくなり、突部３５２にて、基板カバー３６０を、より確実に支持することができる。 In this embodiment, the tip 352A of the protrusion 352 can be locked to the edge of the insertion hole 363 from the outside of the chassis 14 (the side opposite to the chassis 14). In this way, the protrusion 352 is less likely to be removed from the insertion hole 363, and the substrate cover 360 can be more reliably supported by the protrusion 352.
　＜他の実施形態＞
　本発明は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本発明の技術的範囲に含まれる。 <Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
　（１）上記実施形態において、突部の形状、個数などは適宜変更可能である。突部は基板カバーを支持できるものであればよく、例えば、一対の突部により、基板カバーを挟みこんで支持する構成のものであってもよい。 (1) In the above embodiment, the shape and number of protrusions can be changed as appropriate. The protrusion may be anything that can support the substrate cover. For example, the protrusion may have a structure in which the substrate cover is sandwiched and supported by a pair of protrusions.
　（２）突部５２の形成箇所は取付台座部５０に限定されるものではない。シャーシ１４の底板１４ａにおいて、取付台座部５０以外の箇所に形成されていてもよい。また、複数の取付台座部５０のうち、少なくとも一つの取付台座部５０に形成されていてもよい。 (2) The location where the protrusion 52 is formed is not limited to the mounting base 50. The bottom plate 14 a of the chassis 14 may be formed at a location other than the mounting base portion 50. Moreover, you may form in the at least 1 mounting base part 50 among the some mounting base parts 50. FIG.
　（３）取付台座部５０の形状は、上記実施形態のものに限定されない。また、基板カバー６０及びコントロール基板４０は、シャーシ１４の底板１４ａのうち、取付台座部５０が形成されていない箇所に取り付けられる構成であってもよい。 (3) The shape of the mounting base 50 is not limited to that of the above embodiment. Further, the board cover 60 and the control board 40 may be configured to be attached to a portion of the bottom plate 14a of the chassis 14 where the mounting base 50 is not formed.
　（４）上記実施形態では、回路基板として、コントロール基板４０を例示したが、これに限定されない。シャーシ１４に取り付けられる回路基板及び基板カバーであれば、本発明の構成（突部にて支持する構成）を適用することが可能である。 (4) In the above embodiment, the control board 40 is exemplified as the circuit board, but the present invention is not limited to this. As long as the circuit board and the board cover are attached to the chassis 14, the configuration of the present invention (configuration supported by the protrusions) can be applied.
　（５）上記した各実施形態では、光源として冷陰極管１７を用いた場合を示したが、これに限定されない。光源として熱陰極管やＬＥＤなどを用いることも可能である。 (5) In each of the above-described embodiments, the cold cathode tube 17 is used as the light source. However, the present invention is not limited to this. It is also possible to use a hot cathode tube or an LED as the light source.
　（６）上記した実施形態では、液晶パネル及びシャーシがその短辺方向を鉛直方向と一致させた縦置き状態とされるものを例示したが、液晶パネル及びシャーシがその長辺方向を鉛直方向と一致させた縦置き状態とされるものであってもよい。 (6) In the above-described embodiment, the liquid crystal panel and the chassis have been vertically placed with the short side direction aligned with the vertical direction. However, the liquid crystal panel and the chassis have the long side direction set to the vertical direction. It may be in a vertically placed state matched.
　（７）上記した実施形態では、液晶表示装置のスイッチング素子としてＴＦＴを用いたが、ＴＦＴ以外のスイッチング素子（例えば薄膜ダイオード（ＴＦＤ））を用いた液晶表示装置にも適用可能であり、カラー表示する液晶表示装置以外にも、白黒表示する液晶表示装置にも適用可能である。 (7) In the above-described embodiment, the TFT is used as the switching element of the liquid crystal display device. However, the present invention can also be applied to a liquid crystal display device using a switching element other than TFT (for example, a thin film diode (TFD)), and color display. In addition to the liquid crystal display device, the present invention can be applied to a liquid crystal display device that displays black and white.
　（８）上記した実施形態では、表示パネルとして液晶パネルを用いた液晶表示装置を例示したが、他の種類の表示パネルを用いた表示装置にも本発明は適用可能である。 (8) In the above-described embodiment, the liquid crystal display device using the liquid crystal panel as the display panel has been illustrated, but the present invention can also be applied to a display device using another type of display panel.
　（９）上記した実施形態では、チューナーを備えたテレビ受信装置を例示したが、チューナーを備えない表示装置にも本発明は適用可能である。 (9) In the above-described embodiment, the television receiver provided with the tuner is exemplified, but the present invention can also be applied to a display device not provided with the tuner.
１０…液晶表示装置（表示装置）、１１…液晶パネル（表示パネル）、１２，１１２，２１２，３１２…バックライト装置（照明装置）、１４…シャーシ、１４ａ…底板、１４ａ１…底板の板面、１７…冷陰極管（光源）、４０…コントロール基板（回路基板）、５０…取付台座部（取付部）、５２，１５２，２５２，３５２…突部、６０，２６０，３６０…基板カバー、６２Ｂ，２６２Ｂ，３６２Ｂ…基板カバーの下端部、１５２Ａ…凹部、２５３…先端部、３６３…挿通孔、ＴＶ…テレビ受信装置 DESCRIPTION OF SYMBOLS 10 ... Liquid crystal display device (display device), 11 ... Liquid crystal panel (display panel), 12, 112, 212, 312 ... Backlight device (illumination device), 14 ... Chassis, 14a ... Bottom plate, 14a1 ... Plate surface of bottom plate, 17 ... Cold cathode tube (light source), 40 ... Control board (circuit board), 50 ... Mounting base (mounting part), 52, 152, 252, 352 ... Projection, 60, 260, 360 ... Board cover, 62B, 262B, 362B ... lower end portion of substrate cover, 152A ... concave portion, 253 ... tip portion, 363 ... insertion hole, TV ... TV receiver

Claims (10)

  1. 　光源と、
    　前記光源が収容されたシャーシと、
    　前記シャーシの底板に取り付けられた回路基板と、
    　前記底板に取り付けられ、前記回路基板を覆う形で配された基板カバーと、を備え、
    　前記底板には、前記基板カバー側に突出された突部が設けられ、
    　前記底板の板面が鉛直方向に沿う形で前記シャーシが設置された設置状態において、前記突部は、前記基板カバーを支持することを特徴とする照明装置。     A light source;
    A chassis containing the light source;
    A circuit board attached to the bottom plate of the chassis;
    A board cover attached to the bottom plate and arranged to cover the circuit board,
    The bottom plate is provided with a protrusion protruding to the substrate cover side,
    In the installation state in which the chassis is installed such that the plate surface of the bottom plate is along the vertical direction, the projection supports the substrate cover.
  2. 　前記設置状態において、前記突部は、前記基板カバーの下端部を下方から支持することを特徴とする請求項１に記載の照明装置。 The lighting device according to claim 1, wherein, in the installed state, the protrusion supports a lower end portion of the substrate cover from below.
  3. 　前記突部には、前記基板カバーの前記下端部が嵌合される凹部が形成されていることを特徴とする請求項２に記載の照明装置。 3. The illumination device according to claim 2, wherein the protrusion is formed with a recess into which the lower end portion of the substrate cover is fitted.
  4. 　前記基板カバーには、前記突部が挿通可能な挿通孔が形成され、
    　前記突部は、前記挿通孔に挿通されることで、前記基板カバーを支持することを特徴とする請求項１に記載の照明装置。     The substrate cover is formed with an insertion hole through which the protrusion can be inserted,
    The lighting device according to claim 1, wherein the protrusion supports the substrate cover by being inserted through the insertion hole.
  5. 　前記突部の先端からは、前記基板カバーを前記シャーシとは反対側から覆う形で先端部が延びていることを特徴とする請求項１から請求項４のいずれか１項に記載の照明装置。 5. The lighting device according to claim 1, wherein a tip end portion extends from a tip end of the protrusion so as to cover the substrate cover from a side opposite to the chassis. .
  6. 　前記回路基板は、前記底板に突設された複数の取付部に跨がる形で取り付けられており、
    　前記突部は、前記複数の取付部のうち、少なくとも一つの取付部に形成されていることを特徴とする請求項１から請求項５のいずれか１項に記載の照明装置。     The circuit board is attached so as to straddle a plurality of attachment portions protruding from the bottom plate,
    The lighting device according to claim 1, wherein the protrusion is formed on at least one of the plurality of mounting portions.
  7. 　前記突部は、前記シャーシと一体形成されていることを特徴とする請求項１から請求項６のいずれか１項に記載の照明装置。 The lighting device according to any one of claims 1 to 6, wherein the protrusion is formed integrally with the chassis.
  8. 　請求項１から請求項７のいずれか１項に記載の照明装置と、
    　前記照明装置からの光を利用して表示を行う表示パネルと、を備えることを特徴とする表示装置。     The lighting device according to any one of claims 1 to 7,
    And a display panel that performs display using light from the lighting device.
  9. 　前記表示パネルが液晶を用いた液晶パネルであることを特徴とする請求項８に記載の表示装置。 The display device according to claim 8, wherein the display panel is a liquid crystal panel using liquid crystal.
  10. 　請求項８又は請求項９に記載された表示装置を備えることを特徴とするテレビ受信装置。 A television receiver comprising the display device according to claim 8 or 9.
PCT/JP2011/062074 2010-07-07 2011-05-26 Illumination device, display device, and television receiver device WO2012005065A1 (en)

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WO2018163588A1 (en) * 2017-03-06 2018-09-13 ソニーセミコンダクタソリューションズ株式会社 Tuner module and receiving device

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WO2006123472A1 (en) * 2005-05-20 2006-11-23 Sharp Kabushiki Kaisha Chassis for illumination unit, illumination unit having the chassis unit incorporated therein, display device, and television receiver

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Publication number Priority date Publication date Assignee Title
JP2001215896A (en) * 2000-02-02 2001-08-10 Seiko Epson Corp Electro-optic device and method for manufacturing the same as well as electronic apparatus
WO2006123472A1 (en) * 2005-05-20 2006-11-23 Sharp Kabushiki Kaisha Chassis for illumination unit, illumination unit having the chassis unit incorporated therein, display device, and television receiver

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018163588A1 (en) * 2017-03-06 2018-09-13 ソニーセミコンダクタソリューションズ株式会社 Tuner module and receiving device
US11102443B2 (en) 2017-03-06 2021-08-24 Sony Semiconductor Solutions Corporation Tuner module and reception apparatus

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