JP2010009999A - Lighting system, display, and tv receiving equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting system for suppressing the leakage of light from a hole portion, and to provide a display and TV receiving equipment. <P>SOLUTION: A backlight device 12 includes a cold cathode tube 18, a lamp clip 20 for holding the cold cathode tube 18, a chassis 14 having a bottom plate 14a on which the lamp clip 20 is mounted and in which a mounting hole 21 is opened, and a mounting part 27 provided on the lamp clip 20 movably into the mounting hole 21 and having lower light transmissibility than exposed portions of the lamp clip 20 (a lamp gripping portion 25, a supporting pin 26 and a surface side portion 24a of a body part 24) exposed to the side of the cold cathode tube 18. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lighting device, a display device, and a television receiver.

  2. Description of the Related Art Conventionally, a liquid crystal panel used for a liquid crystal display device such as a liquid crystal television does not emit light spontaneously, and thus requires a backlight device as a separate illumination device. This backlight device is installed on the back side of the liquid crystal panel (the side opposite to the display surface). The backlight device is made of metal or resin and the liquid crystal panel side surface is open, and is laid in the chassis. And a large number of fluorescent tubes (for example, cold cathode tubes) housed in the chassis as lamps, and light emitted from the cold cathode tubes disposed in the opening of the chassis is efficiently emitted to the liquid crystal panel side. A plurality of optical members (such as a diffusion sheet) and a lamp clip for supporting an intermediate portion of the cold cathode tube having an elongated tubular shape.

Among these, what was described in following patent document 1 is known as an example of a lamp clip. In this device, the lamp clip attached to the chassis is formed of a transparent material, thereby preventing uneven brightness due to the shadow of the lamp clip.
JP 2005-332831 A

  By the way, an attachment hole for attaching the lamp clip is formed on the attachment surface of the lamp clip in the chassis, but if the lamp clip is transparent as described above, the light transmitted through the lamp clip is attached to the attachment hole. May be transmitted. The light transmitted through the mounting hole leaks to the outside of the chassis, and there is a risk of causing problems such as a reduction in display quality.

  This invention is completed based on the above situations, Comprising: It aims at suppressing the light leak from a hole.

  The illumination device of the present invention includes a lamp, a lamp holder that holds the lamp, a chassis on which the lamp holder is mounted, and a chassis that is provided with a hole opening on the surface. And an entrance portion that is provided in the lamp holder and is allowed to enter the hole portion and has a light transmittance lower than an exposed portion of the lamp holder that is exposed to the lamp side.

  In this way, even if light is transmitted through the exposed portion of the lamp holder that is exposed to the lamp side, the light transmittance of the entrance portion that enters the hole of the chassis is lower than that of the exposed portion. , It becomes difficult for light to pass through the hole.

The following configuration is preferable as an embodiment of the present invention.
(1) The exposed portion has a light reflectance higher than that of the entry portion. In this way, the light utilization efficiency can be improved by increasing the light reflectance of the exposed portion exposed to the lamp.

(2) The lamp holder includes a substantially plate-like main body portion attached to the adherend surface, the entry portion protrudes from the main body portion, and the exposed portion is excluded from the main body portion. It is a part, Comprising: The base part of the said approach part is set as the structure by which the light transmittance is lower than the said exposed part. In this way, it becomes more difficult for light to pass through the hole.

(3) A portion of the main body portion excluding the exposed portion and a portion overlapping the hole portion has a light transmittance lower than that of the exposed portion. In this way, it becomes more difficult for light to pass through the hole.

(4) A portion of the main body portion excluding the exposed portion, which is wider than the portion overlapping the hole portion, has a light transmittance lower than that of the exposed portion. In this way, it becomes more difficult for light to pass through the hole.

(5) The main body portion includes a first portion including the exposed portion and a second portion stacked on the chassis side with respect to the first portion, and the second portion has a light transmittance. Is lower than the first part. In this way, since the main body has a laminated structure of the first part and the second part having different light transmittances, it is difficult for light to pass through the entire main body, and light leakage from the hole is prevented. This can be prevented more reliably.

(6) The second part is configured to have the same light transmittance as that of the entry part. If it does in this way, compared with the case where the transmittance | permeability of light is different in the 2nd part and an entrance part, manufacture will become easy.

(7) The entry portion is arranged at a position overlapping the lamp. In this way, the distance between the lamp and the hole into which the entry part enters is the shortest, and although light leakage from the hole is a concern, transmission of light into the hole can be restricted by the entry part. It is valid.

(8) The entrance portion and the exposed portion are formed of materials having different light transmittances. As described above, since the material itself is different between the entrance portion and the exposed portion, for example, when the transmittance is changed by applying paint to the lamp holder, the transmittance may change due to peeling of the paint or the like. However, such a situation does not occur.

(9) The lamp holder is configured to be two-color molded from materials having different light transmittances. In this way, the lamp holder can be easily manufactured as compared with the case where the lamp holder is manufactured by assembling a plurality of components.

(10) The lamp holder includes a substantially plate-like main body portion attached to the adherend surface, and the entry portion protrudes from the main body portion, and the entry portion is located between the main body portion and the main body portion. Thus, the edge of the hole can be clamped. If it does in this way, the edge part of a hole will be pinched | interposed between an entrance part and a main-body part, and a lamp | ramp holder will be hold | maintained with a mounting state with respect to a chassis.

(11) The entry portion includes a base portion protruding from the main body portion toward the chassis, and a protrusion protruding from the base portion in a direction along the main body portion, and the protrusion portion is inserted into the hole portion. If it does, it will be set as the structure which can clamp the edge of the said hole part between the said main-body parts. If it does in this way, it will become suitable for the thing of the type attached by pushing a lamp holder into a chassis.

(12) The entry portion includes a base portion protruding from the main body portion toward the chassis, and a protrusion protruding from the base portion in a direction along the main body portion, and the protrusion portion is inserted into the hole portion. The edge of the hole can be clamped between the main body and the main body by sliding in the direction along the main body. If it does in this way, it will become suitable for the type which attaches by sliding a lamp holder to a chassis.

(13) The exposed portion is white, whereas the entry portion is black. If it does in this way, while the exposed part exposed to the lamp side is made white, light can be reflected efficiently, and the entrance part which enters into the hole part is made black, so that the light to the hole part can be reflected. Transmission can be well controlled.

  Next, in order to solve the above problem, a display device of the present invention includes the above-described illumination device and a display panel that performs display using light from the illumination device.

  According to such a display device, since the illumination device that supplies light to the display panel is difficult to cause unnecessary light leakage, it is possible to realize display with excellent display quality.

  An example of the display panel is a liquid crystal panel. Such a display device can be applied as a liquid crystal display device to various uses such as a display of a television or a personal computer, and is particularly suitable for a large screen.

  Next, in order to solve the above problems, a television receiver of the present invention includes the display device described above.

  According to such a television receiver, since the display panel is excellent in display quality, the display quality of television images can be improved.

  Further, the television receiver is provided with a cabinet that covers the chassis of the display device, and a heat dissipation hole is formed in the cabinet.

  In this case, there is a concern about light leakage from the heat radiation hole of the cabinet that covers the chassis, but it is particularly effective because light leakage from the hole of the chassis is suppressed.

  According to the present invention, light leakage from the hole can be suppressed.

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. In this embodiment, the liquid crystal display device 10 including the liquid crystal panel 11 is illustrated. In the following description, the upper side shown in FIGS. 2 and 3 is the front side, and the lower side is the back side.

  The liquid crystal display device 10 has a horizontally long rectangular shape as a whole. As shown in FIG. 2, the liquid crystal display device 10 emits light toward the liquid crystal panel 11 on the back side (back side) of the liquid crystal panel 11 that is a display panel capable of displaying an image. A backlight device 12 that is an external light source (illumination device) that can be irradiated is arranged, and these are integrally held by a frame-like bezel 13 or the like. The liquid crystal display device 10 can be applied to a television receiver TV. As shown in FIG. 1, a television receiver TV is a tuner T for receiving a liquid crystal display device 10, both front and back cabinets Ca and Cb accommodated with the liquid crystal display device 10 sandwiched therebetween, a power source P, and television broadcasting. And a stand S. Among these, the back cabinet Cb opens inward and outward in a state where a large number of heat radiation holes H are arranged in parallel to circulate air inside and outside the television receiver TV and exhaust heat generated from the liquid crystal display device 10 or the like. Is formed. The heat radiation hole H has a vertically long oval shape.

  As shown in FIG. 2, the liquid crystal panel 11 is interposed between a pair of transparent (translucent) glass substrates having a horizontally long rectangular shape, and both substrates. And a liquid crystal layer (not shown) containing liquid crystal molecules which are changing substances, and both substrates are bonded together with a sealing agent (not shown) while maintaining a gap corresponding to the thickness of the liquid crystal layer.

  Of the two substrates, the front side (front side) is a CF substrate, and the back side (back side) is an array substrate. On the inner surface side of the array substrate (the liquid crystal layer side, the surface facing the CF substrate), a large number of TFTs (Thin Film Transistors) and pixel electrodes, which are switching elements, are provided side by side, and around these TFTs and pixel electrodes. Are arranged so as to surround a gate wiring and a source wiring in a lattice shape. The pixel electrode is made of a transparent electrode such as ITO (Indium Tin Oxide) or ZnO (Zinc Oxide).

  On the other hand, on the CF substrate, a large number of color filters are provided side by side at positions corresponding to the respective pixels. The color filter is arranged so that three colors of R, G, and B are alternately arranged. A light shielding layer (black matrix) for preventing color mixture is formed between the color filters. A counter electrode facing the pixel electrode on the array substrate side is provided on the surface of the color filter and the light shielding layer. An alignment film for aligning liquid crystal molecules contained in the liquid crystal layer is formed on the inner surfaces of both substrates. Further, polarizing plates are respectively attached to the outer surface sides of both substrates.

  As shown in FIG. 2, the backlight device 12 is a so-called direct-type backlight in which a light source is disposed directly under the back surface of the liquid crystal panel 11, and has a substantially box shape opened on the front side (light emission side). Chassis 14, reflection sheet 15 laid in chassis 14, optical member 16 attached to the opening of chassis 14, frame 17 for fixing optical member 16, and a plurality of pieces accommodated in chassis 14 The cold cathode tube 18, a pair of holders 19 that hold both ends of the cold cathode tube 18, and a plurality of lamp clips 20 that hold an intermediate portion of the cold cathode tube 18.

  The chassis 14 is made of metal and includes a bottom plate 14a having a horizontally long rectangular shape similar to that of the liquid crystal panel 11, and a side plate rising from the periphery of the bottom plate 14a. Among these, as shown in FIG. 3, the bottom plate 14 a constitutes an attachment surface to which the lamp clip 20 is attached, and a plurality of attachment holes 21 to which the lamp clip 20 can be attached are provided. As shown in FIGS. 3 and 4, the mounting holes 21 have a circular shape in plan view, and a pair of mounting holes 21 are prepared corresponding to one lamp clip 20. Has been placed. As shown in FIG. 3, an inverter board 22 that supplies driving power to each cold cathode tube 18 is disposed on the back side of the chassis 14, and the inverter board 22 is fixed to the chassis 14 by fixing means (not shown). Yes. Further, on the further back side of the inverter board 22, a back side cabinet Cb constituting the television receiver TV is arranged, and the entire chassis 14 is covered from the back side by the cabinet Cb.

  The reflection sheet 15 is made of a synthetic resin exhibiting white having excellent light reflectivity, and is laid so as to cover almost the entire inner surface of the chassis 14. With this reflection sheet 15, most of the light emitted from each cold cathode tube 18 can be guided to the opening side of the chassis 14. The reflection sheet 15 is provided with a plurality of insertion holes 23 through which attachment portions 27 that are attachment structures of the lamp clips 20 to the chassis 14 can be inserted. Each insertion hole 23 is disposed at a position corresponding to each mounting hole 21 in the chassis 14, and more specifically, in a state where the reflection sheet 15 is laid on the chassis 14, the insertion hole 23 is superimposed on each mounting hole 21 in a plan view. It is said that. Further, the insertion hole 23 has a circular shape when seen in a plan view, and its diameter is slightly larger than that of the mounting hole 21. The cold cathode tube 18 is a kind of linear light source (tubular light source), and as shown in FIG. 2, the cold cathode tube 18 is mounted in the chassis 14 in a posture in which the axial direction thereof coincides with the long side direction of the chassis 14. A plurality of lines are arranged with their axes substantially parallel to each other and with a predetermined interval between each other. The holder 19 is made of a synthetic resin exhibiting white with excellent light reflectivity, covers the end portion (non-light emitting portion) of the cold cathode tube 18 where the electrode is installed, and extends along the short side direction of the chassis 14. It is a long and thin box.

  The optical member 16 is fixed by having the short side edge portion sandwiched between the holder 19 and the frame 17 while the long side edge portion is sandwiched between the chassis 14 and the frame 17. ing. As shown in FIG. 3, the optical member 16 includes a diffusion plate 16 a disposed so as to cover the opening of the chassis 14, and a plurality of optical sheets 16 b disposed between the diffusion plate 16 a and the liquid crystal panel 11. Consists of. The diffusion plate 16a is formed by dispersing and scattering light scattering particles in a synthetic resin plate-like member, and has a function of diffusing linear light emitted from the cold cathode tube 18 serving as a tubular light source. The optical sheet 16b disposed on the diffusion plate 16a is formed by laminating, for example, a diffusion sheet, a lens sheet, and a reflective polarizing plate in order from the diffusion plate 16a side. The optical sheet 16b is emitted from the cold cathode tube 18 and diffused. The light having passed through the light has a function of making it planar light.

  Here, the lamp clip 20 will be described in detail. The lamp clip 20 is made of synthetic resin (for example, polycarbonate), has a substantially plate shape along the bottom plate 14a of the chassis 14 (reflective sheet 15), and has a substantially rectangular main body portion 24 (mounting plate, base portion). ). As shown in FIG. 2, the lamp clip 20 has a posture in which the long side direction of the main body 24 is substantially parallel to the short side direction of the chassis 14 with respect to the chassis 14, that is, a direction orthogonal to the axial direction of the cold cathode tube 18. It is attached in a posture (orientation, state) almost parallel. The lamp clips 20 are installed at a plurality of dispersed positions on the bottom plate 14 a of the chassis 14.

  As shown in FIGS. 3 and 5, the cold cathode tube 18 is provided on the front side surface (the surface facing the diffusion plate 16 a or the cold cathode tube 18 side, the surface opposite to the chassis 14 side) of the main body 24. A lamp holding part 25 for supporting at a predetermined height position and a support pin 26 for supporting the diffusion plate 16a at a position higher than the cold cathode tube 18 are provided. A pair of lamp gripping portions 25 are installed side by side at positions separated in the long side direction of the main body portion 24, and each grips a different cold cathode tube 18. The support pin 26 is disposed at a central position in the long side direction and the short side direction in the main body portion 24 and at a substantially intermediate position between both the lamp gripping portions 25. In other words, the distance between each lamp gripping portion 25 and the support pin 26 is substantially equal.

  On the other hand, the lamp clip 20 is attached to the chassis 14 on the back surface (the surface facing the chassis 14 and the reflection sheet 15 side, the surface opposite to the diffusion plate 16a and the cold cathode tube 18 side) of the main body 24. A pair of mounting portions 27 for holding the mounting state is provided. Both attachment portions 27 are arranged at positions spaced apart in the long side direction of the main body portion 24 and at positions corresponding to the both lamp gripping portions 25 described above. Specifically, both mounting portions 27 are arranged at substantially the same position in the long side direction and the short side direction of the main body portion 24 with respect to both lamp gripping portions 25, that is, in the plate surface direction of the main body portion 24, and are viewed in a plane. Are arranged at the overlapping positions. In other words, the both attachment portions 27 are arranged at the true back position (directly below position) with respect to both the lamp gripping portions 25. In other words, the mounting portions 27 are arranged at positions overlapping the cold cathode tubes 18 respectively held by the lamp gripping portions 25 when seen in a plan view, and the interval between the mounting portions 27 is set. That is, it almost coincides with the pitch between the cold cathode tubes 18. The mounting portion 27 is formed to be slightly larger than the mounting hole 21 although the size of the main body portion 24 in the plate surface direction (size in a plan view) is smaller than that of the main body portion 24.

  Subsequently, the structure of the lamp gripping portion 25 will be described in detail. As shown in FIG. 3, the lamp gripping portion 25 has an intermediate portion between the opposite ends of the cold cathode tube 18, that is, the light emitting portion, from the back side to a height position slightly lifted from the reflection sheet 15. Can be supported. The lamp gripping part 25 has a pair of arms 28 that are opposed to each other and have an end-like annular shape that opens to the front side as a whole. An opening 29 that allows passage of the cold cathode tube 18 that is attached and detached along the vertical direction shown in FIG. 3 (the direction perpendicular to the plate surface of the bottom plate 14a of the chassis 14) shown in FIG. It is secured. Both arm portions 28 have cantilever shapes that rise from positions separated from each other in the long side direction on the front side surface of the main body portion 24, and have a shape curved in a substantially arc shape. The curvatures of both the arm portions 28 substantially coincide with the curvature of the outer peripheral surface of the cold cathode tube 18 to be attached, and the gap generated between the cold cathode tube 18 in the attached state has a substantially constant width in the circumferential direction. Both arm portions 28 are elastically deformable along the long side direction of the main body portion 24 with the rising base end portion from the main body portion 24 as a fulcrum.

  Holding protrusions 30 for holding the cold cathode tubes 18 are provided on the inner surfaces of the front end portions of both arm portions 28 (opposing circumferential surfaces facing the cold cathode tubes 18). Opening 29 is secured. The opening in the opening 29 is set to be slightly narrower than the outer diameter of the cold cathode tube 18. Therefore, when the cold cathode tube 18 is attached / detached through the opening 29, both the arm portions 28 are elastically expanded and deformed by being pushed by the cold cathode tube 18. The holding projection 30 is configured to project inward from the inner surface of the distal end portion of the arm portion 28 (toward the central axis side in the cold cathode tube 18), and the cold cathode tube 18 from the front side (light emission side). It is in a position to cover, that is, on the side of the cold cathode tube 18 in the removal direction. In the mounted state, the cold-cathode tube 18 has a first support point at the center located immediately below the center of the cold-cathode tube 18 on the bottom surface of the lamp gripping portion 25, a second support point at the inner ends of both holding projections 30, and A small gap extending in the circumferential direction between the outer peripheral surface of the cold cathode tube 18 and the inner peripheral surface of the lamp gripping portion 25 between the support points. (Clearance) is made available.

  Guide portions 31 for guiding the mounting operation of the cold cathode tubes 18 are provided on the outer surfaces of the distal end portions of the both arm portions 28, respectively. Both guide portions 31 are formed in a tapered shape that rises obliquely outward from the arm portion 28. Both guide portions 31 have a gradient that is spaced from the projecting proximal end to the projecting distal end, and the inner surface facing the cold cathode tube 18 is also an inclined surface having the same gradient. Accordingly, the distance between the inner surfaces which are the opposing surfaces of the guide portions 31 is gradually narrower toward the lower side of the drawing, that is, toward the mounting direction side of the cold cathode tube 18, and conversely on the removal direction side of the cold cathode tube 18. It gradually gets wider as you go. Thereby, the mounting operation of the cold cathode tube 18 can be smoothly guided by the inner surfaces of the both guide portions 31. Further, the inner surface of the guide portion 31 is gently connected to the inner surface of the holding projection 30 as it is.

  Next, the structure of the support pin 26 will be described in detail. As shown in FIG. 3, the support pins 26 support the center portion of the screen from the back side of the outer peripheral edge portion supported by the holder 19 or the like in the diffusion plate 16 a, so that the diffusion plate 16 a is on the cold cathode tube 18 side. It is possible to regulate bending and warping. The support pin 26 is formed in a tapered shape in which the cross-sectional shape cut along the horizontal direction is circular (FIG. 5), and the diameter gradually decreases from the root side to the tip side. That is, the support pin 26 is formed in a substantially conical shape. An R surface is formed and rounded at the tip of the support pin 26 that can come into contact with the diffusion plate 16a. The protruding height of the support pin 26 from the main body 24 is set to be higher than that of the lamp gripping portion 25, and the support pin 26 is a portion protruding to the highest position in the lamp clip 20. Accordingly, when performing the work of attaching / detaching the lamp clip 20 to / from the chassis 14, the operator can grasp the support pin 26 to perform the work, and the support pin 26 serves as an operation part at the time of attachment / detachment. Can also work.

  Next, the structure of the attachment portion 27 will be described in detail. As shown in FIG. 3, the mounting portion 27 includes a base portion 32 that protrudes from the back surface of the main body portion 24, and a pair of protrusions that are folded back from the tip of the base portion 32 toward the main body portion 24 side and face the side of the base portion 32. Part 33. The base portion 32 protrudes substantially perpendicularly from the surface on the back side of the main body portion 24, and the protruding direction coincides with the direction orthogonal to the plate surface of the main body portion 24. The base portion 32 has a substantially prismatic shape with a rectangular cross section, and the long side direction thereof coincides with the short side direction of the main body portion 24.

  The pair of protrusions 33 are each formed in a cantilever shape protruding from both side surfaces on the long side of the protruding tip portion of the base portion 32, and protrude in opposite directions with respect to the long side direction of the main body portion 24. Accordingly, both protrusions 33 are arranged side by side in the long side direction of the main body 24 with the base 32 interposed therebetween. The projecting portion 33 is inclined so as to gradually move away from the base portion 32 from the base end portion to the free end portion, and is in a direction in which the base end portion is brought into contact with and separated from the base portion 32 as a fulcrum (long side direction of the main body portion 24). ) Can be elastically deformed. The tip portion of the protrusion 33 is formed in a stepped shape with the outer portion 33b being lower than the inner portion 33a that is relatively close to the base portion 32. Of these, the inner portion 33a is the chassis when attached to the chassis 14. The outer portion 33 b is arranged outside the mounting hole 21, while entering the 14 mounting holes 21. A surface of the outer portion 33b that faces the main body 24 is a locking surface 33c that can be locked to the hole edge of the chassis 14 from the back side. The distance between the main body 24 and the locking surface 33c is approximately the same as that obtained by adding the thickness dimensions of the chassis 14 and the reflection sheet 15 together.

  The lamp clip 20 is formed in two colors by using two kinds of materials having different light transmittance and reflectance. The portion of the lamp clip 20 exposed to the cold cathode tube 18 side (optical member 16 side) is made of the first material having a relatively high light transmittance and reflectance, whereas the attachment portion 27 is provided. The portion that is included and faces the chassis 14 is made of a second material that has a relatively low light transmittance and reflectance.

  As the first material and the second material, for example, the same polycarbonate resin is used, but the color is different between the first material and the second material, whereby the first material and the second material are used. And have different light transmittance and reflectance. The first material is white with excellent light reflectivity, while the second material is black with excellent light blocking properties. Specifically, as the white resin as the first material, “LR8031V” manufactured by Sumitomo Dow Co., Ltd. (light reflectance: 98% to 99%, light transmittance: 0.5% to 1.2%) Alternatively, “EHR3100” (light reflectance: 97%, light transmittance: 1%) manufactured by Mitsubishi Engineering Plastics Co., Ltd. can be used. The black resin used as the second material includes “8720-20” (light reflectance: 10%, light transmittance: 0%) manufactured by Sumitomo Dow Co., Ltd. and “EFR3000” manufactured by Mitsubishi Engineering Plastics Co., Ltd. (Light reflectance: 5.72%, light transmittance: 0%) can be used. As described above, the white resin as the first material has a very high light reflectivity, but transmits a slight amount of light, whereas the black resin as the second material reflects the light. Although the rate is relatively low, it is a material that does not transmit light at all.

  A portion of the lamp clip 20 exposed to the cold cathode tube 18 side (portion facing the light emitting side (optical member 16 side) in the backlight device 12), that is, the front side of the lamp gripping portion 25, the support pin 26, and the main body portion 24. Whereas the portion 24a is made of the first material described above, the portion of the lamp clip 20 facing the chassis 14 side, that is, the mounting portion 27 and the back side portion 24b of the main body portion 24 are made of the second material. In particular, the main body 24 is divided into a first part 34 which is a front side part 24a made of a first material and a second part 35 which is a back side part 24b made of a second material, and these are laminated on the front and back sides. It has a double laminated structure. The boundary position between the first part 34 and the second part 35 in the main body part 24 is substantially the center position in the thickness direction, and the thickness dimensions of the first part 34 and the second part 35 are substantially equal to each other. It has become. The lamp gripping portion 25 and the support pin 26 are integrally formed with the first portion 34 of the main body portion 24, while the attachment portion 27 is integrally formed with the second portion 35 of the main body portion 24.

  In a state where the lamp clip 20 is attached to the chassis 14, as shown in FIGS. 3 and 6, each attachment portion 27 made of the second material is inserted into each attachment hole 21, and the back side portion 24b is Each mounting hole 21 is closed from the front side by the main body portion 24 which is the second portion 35 made of the second material. Since the size of the main body portion 24 in plan view is sufficiently larger than that of the mounting hole 21, a predetermined region including the mounting hole 21 and the peripheral portion of the chassis 14 can be covered from the front side. . As a result, even if light passes through the first portion 34 of the main body 24 slightly, it is possible to reliably prevent the light from reaching the mounting hole 21. In this state, the lamp grip portion 25 exposed to the cold cathode tube 18 side, the support pin 26, and the first portion 34 which is the front side portion 24a of the main body portion 24 are all formed of the first material. Therefore, the light emitted from the cold cathode tube 18 can be favorably reflected to the optical member 16 side.

  This embodiment has the structure as described above, and the operation thereof will be described subsequently. The liquid crystal display device 10 shown in FIG. 2 is manufactured by separately manufacturing the liquid crystal panel 11 and the backlight device 12 and assembling them with each other using the bezel 13 or the like. Next, the assembly work of the backlight device 12, particularly the work of attaching the lamp clip 20 to the chassis 14 will be described in detail.

  As shown in FIG. 7, when the reflection sheet 15 is laid on the inside of the chassis 14, the corresponding mounting holes 21 are positioned so that the corresponding mounting holes 21 face each other. Perform the installation work. When the support pins 26 of the lamp clip 20 are gripped, the main body 24 is directed from the front side to the bottom plate 14a of the chassis 14 while aligning each mounting portion 27 with each mounting hole 21 at the planned mounting position on the bottom plate 14a of the chassis 14. And push it in. Then, each attachment portion 27 is inserted into each attachment hole 21 from the distal end side, and the protrusion 33 interferes with the front edge of the attachment hole 21 so as to approach the base portion 32 once (to squeeze). Elastically deformed.

  When the lamp clip 20 is pushed to such a depth that the back surface of the main body 24 contacts the bottom plate 14a of the chassis 14, the outer portion 33b at the tip of the projection 33 protrudes to the back side of the bottom plate 14a and the projection 33 is restored. As shown in FIG. 3, the locking surface 33 c of the outer portion 33 b is locked to the edge on the back side of the mounting hole 21. Thus, the edge of the mounting hole 21 and the edge of the insertion hole 23 of the reflection sheet 15 in the bottom plate 14a of the chassis 14 are sandwiched between the protrusion 33 and the main body 24 of the mounting part 27, and The lamp clip 20 is held in the attached state with the reflective sheet 15 interposed with respect to the chassis 14. In this attachment state, the protruding proximal end portion of the base portion 32 and the inner portion 33 a at the distal end portion of the protrusion portion 33 of the attachment portion 27 enter the attachment hole 21.

  After the lamp clip 20 is attached as described above, each cold cathode tube 18 is attached to each lamp gripping portion 25, and then the holder 19 is attached. Thereafter, the diffusion plate 16a and the optical sheets 16b are stacked and installed, and the backlight device 12 is assembled. After the liquid crystal panel 11 is further mounted from the front side, the liquid crystal display device 10 is assembled by assembling the bezel 13. .

  When an image is displayed on the liquid crystal display device 10 assembled as described above, each cold cathode tube 18 of the backlight device 12 is turned on and an image signal is supplied to the liquid crystal panel 11. At this time, the linear light emitted from the cold cathode tube 18 is irradiated to the optical member 16 directly or after being reflected by the reflection sheet 15 or the lamp clip 20 and transmitted through the optical member 16. Then, the light is converted into planar light and then irradiated onto the liquid crystal panel 11. At this time, the portion of the lamp clip 20 exposed to the cold cathode tube 18 side (the lamp gripping portion 25, the support pin 26, and the front side portion 24a of the main body portion 24) is more than the second material constituting the attachment portion 27 and the like. Since it is made of the first material having a high light reflectance, the light can be favorably reflected toward the optical member 16 and the light utilization efficiency is excellent.

  By the way, the portion of the lamp clip 20 exposed to the cold cathode tube 18 side is formed of a first material that is a white resin excellent in light reflectivity. This first material is: While excellent in light reflectivity, it has a slight translucency. Therefore, most of the light emitted from the cold-cathode tube 18 that hits the lamp clip 20 is reflected, but a part of the lamp gripping portion 25 made of the first material and the support pin are partially reflected. 26 and the front side portion 24a (first portion 34) of the main body 24 can be transmitted. If the light that has passed through the lamp clip 20 enters the mounting hole 21, it is likely to escape to the rear side of the chassis 14 and the light may leak to the outside.

  However, in the present embodiment, the mounting portion 27 that has entered the mounting hole 21 in the lamp clip 20 and the back side portion 24b (second portion 35) of the main body 24 that closes the mounting hole 21 from the front side are light-shielding. Because it is formed of the second material, which is a black resin that is excellent in light translucency, even if light passes through the portion exposed to the cold cathode tube 18 in the lamp clip 20, the light is attached. The light can be shielded before reaching the hole 21. Thereby, it is possible to reliably prevent light in the chassis 14 from passing through the attachment hole 21 and leaking to the outside on the back side. Therefore, light leakage does not occur from the heat radiating hole H formed in the rear cabinet Cb in the television receiver TV, and even when the television receiver TV is used in a dark room, an excellent quality display is provided. be able to.

  As described above, according to the present embodiment, the backlight device 12 includes the cold cathode tube 18, the lamp clip 20 that holds the cold cathode tube 18, and the bottom plate 14 a to which the lamp clip 20 is attached. The chassis 14 provided with the mounting hole 21 opened in the bottom plate 14a, and the exposed portion (exposed to the cold cathode tube 18 side of the lamp clip 20 that is provided in the lamp clip 20 and can enter the mounting hole 21). The lamp gripping portion 25, the support pin 26, and the attachment portion 27 having a light transmittance lower than that of the front side portion 24a) of the main body portion 24 are provided.

  In this way, even if light passes through the exposed portion of the lamp clip 20 exposed to the cold cathode tube 18 side, the mounting portion 27 that enters the mounting hole 21 of the chassis 14 transmits light more than the exposed portion. Since the rate is low, it becomes difficult for light to pass through the mounting hole 21. Accordingly, light leakage from the mounting hole 21 can be suppressed.

  Further, the exposed portion has a higher light reflectance than the mounting portion 27. In this way, the light utilization efficiency can be improved by increasing the light reflectance of the exposed portion exposed to the cold cathode tube 18.

  Further, the lamp clip 20 includes a substantially plate-like main body portion 24 attached to the bottom plate 14a, and an attachment portion 27 projects from the main body portion 24, and is a portion of the main body portion 24 excluding the exposed portion. Thus, the base portion of the mounting portion 27 has a light transmittance lower than that of the exposed portion. In this way, light transmission to the mounting hole 21 can be restricted not only by the mounting portion 27 but also by the root portion, so that light is less likely to pass through the mounting hole 21.

  Further, the portion of the main body 24 excluding the exposed portion and overlapping with the mounting hole 21 has a light transmittance lower than that of the exposed portion. If it does in this way, permeation | transmission of the light to the attachment hole 21 can be controlled also by the part which overlaps with the attachment hole 21 in addition to the attachment part 27 and its base part, and light becomes difficult to permeate | transmit the attachment hole 21 further.

  Further, the portion of the main body 24 excluding the exposed portion and wider than the portion overlapping the mounting hole 21 has a light transmittance lower than that of the exposed portion. In this way, the transmission of light to the mounting hole 21 can be restricted by a portion extending over a wider range in addition to the mounting portion 27, its root portion, and the portion overlapping the mounting hole 21, and light can pass through the mounting hole 21. It becomes even more difficult to penetrate.

  The main body 24 includes a first part 34 including an exposed portion, and a second part 35 stacked on the chassis 14 side with respect to the first part 34. The second part 35 has a light transmittance. Is lower than the first part 34. In this way, the main body portion 24 has a laminated structure of the first portion 34 and the second portion 35 having different light transmittances, and the second portion 35 covers the entire area in the plate surface direction of the main body portion 24. Since it is formed in the range, it is difficult for light to pass through the entire main body 24, and light leakage from the mounting hole 21 can be prevented more reliably.

  The second portion 35 has the same light transmittance as that of the mounting portion 27. By doing so, it is easier to manufacture compared to the case where the second portion 35 and the mounting portion 27 have different light transmittances.

  Further, the mounting portion 27 is disposed at a position overlapping the cold cathode tube 18. In this way, the distance between the cold cathode tube 18 and the mounting hole 21 into which the mounting portion 27 enters becomes shortest and there is a concern about light leakage from the mounting hole 21, but the light to the mounting hole 21 by the mounting portion 27. This is particularly effective because the transmission of the light can be restricted.

  Further, the attachment portion 27 and the exposed portion are formed of materials having different light transmittances. As described above, since the material itself is different between the mounting portion 27 and the exposed portion, for example, when the transmittance is changed by applying paint to the lamp clip 20, the transmittance changes due to peeling of the paint or the like. You get it, but that doesn't happen.

  The lamp clip 20 is formed in two colors from materials having different light transmittances. In this way, it is possible to easily manufacture the lamp clip 20 as compared with the case where the lamp clip 20 is manufactured by assembling a plurality of parts.

  Further, the lamp clip 20 includes a substantially plate-like main body portion 24 attached to the bottom plate 14 a, and an attachment portion 27 protrudes from the main body portion 24, and the attachment portion 27 is attached to the main body portion 24. The edge of the hole 21 can be clamped. In this manner, the lamp clip 20 is held in the mounting state with respect to the chassis 14 by sandwiching the edge of the mounting hole 21 between the mounting portion 27 and the main body portion 24.

  The mounting portion 27 includes a base portion 32 that protrudes from the main body portion 24 toward the chassis 14, and a protrusion 33 that protrudes in a direction along the main body portion 24 from the base portion 32, and the protrusion 33 is formed in the mounting hole 21. When inserted, the edge portion of the mounting hole 21 can be clamped between the main body portion 24 and the body portion 24. If it does in this way, it will become suitable for the type of attachment which pushes lamp clip 20 into chassis 14 and attaches.

  Further, the exposed portion is white, while the attachment portion 27 is black. If it does in this way, while being able to reflect light efficiently by making the exposed part exposed to the cold-cathode tube 18 side white, it is possible to make the attachment part 27 entering the attachment hole 21 black. Light transmission to the mounting hole 21 can be well regulated.

  Of the liquid crystal display device 10 including the backlight device 12 having the above-described configuration and the liquid crystal panel 11 that performs display using light from the backlight device 12, the chassis 14 is a part of the television receiver TV. It is covered with a certain cabinet Cb, and a heat radiating hole H is formed in the cabinet Cb. In this case, there is a concern about light leakage from the heat radiation hole H of the cabinet Cb covering the chassis 14, but this is particularly effective because light leakage from the mounting hole 21 of the chassis 14 is suppressed.

<Embodiment 2>
A second embodiment of the present invention will be described with reference to FIGS. In the second embodiment, a structure in which the attachment structure of the lamp clip 20-A to the chassis 14-A is changed is shown. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals and the suffix -A is added to the end thereof, and the description of the structure, operation, and effect is omitted. .

  In the present embodiment, as a mounting structure of the lamp clip 20-A, a type of mounting by sliding the lamp clip 20-A with respect to the chassis 14-A is adopted. Specifically, as shown in FIG. 8, the pair of attachment portions 36 and 37 provided on the back surface of the main body portion 24-A are both hooks along the back surface (plate surface) of the main body portion 24-A. It has a shape. In the following, of the two attachment portions 36 and 37, the left side shown in FIG. 8 is referred to as a first attachment portion 36, and the right side in FIG. 8 is referred to as a second attachment portion 37.

  First, the common structure of the mounting portions 36 and 37 will be described. The first mounting portion 36 and the second mounting portion 37 are bent at substantially right angles from the base portions 36a and 37a protruding from the back surface of the main body portion 24-A, and the tips of the base portions 36a and 37a, and the long sides of the main body portion 24-A. Cantilevered protrusions 36b and 37b that protrude (extend) along the direction are provided, and are substantially L-shaped when viewed from the front. The base portions 36a and 37a have a substantially prismatic shape with a rectangular cross section, and the long side direction thereof coincides with the short side direction in the main body portion 24-A. The protrusions 36b and 37b are substantially parallel to the plate surface of the main body portion 24-A, and come into and out of contact with the main body portion 24-A with the base end portion connected to the base portions 36a and 37a as a fulcrum (FIG. 8). In the vertical direction) shown in FIG. The protruding directions of the protrusions 36b and 37b from the base portions 36a and 37a coincide with the sliding direction when the lamp clip 20-A is attached to the chassis 14-A. The bases 36a and 37a and the protrusions 36b and 37b have substantially the same dimension in the short side direction of the main body part 24-A, and the size thereof is smaller than the short side dimension of the main body part 24-A.

  Next, a different structure between the first attachment portion 36 and the second attachment portion 37 will be described. The first mounting portion 36 is provided with a locking protrusion 39 that protrudes from the tip of the protrusion 36b toward the main body 24-A. A taper surface is formed on a surface of the locking projection 39 facing the main body portion 24-A. The surface of the locking protrusion 39 that faces the base portion 36a is substantially parallel and upright with the outer surface of the base portion 36a, and is substantially straight along the direction perpendicular to the sliding direction of the lamp clip 20-A with respect to the chassis 14-A. This is a locking surface for the locking hole 42 of the chassis 14-A. On the other hand, for the second attachment portion 37, a guide portion 38 capable of guiding the attachment operation to the chassis 14-A is provided at the tip of the projection 37b. The guide portion 38 is formed with a gradient such that the guide portion 38 moves away from the main body portion 24-A as it goes to the distal end side. Further, with respect to the arrangement of the main body portion 24-A in the long side direction, the base portion 36a of the first mounting portion 36 is a position eccentric to the support pin 26-A with respect to the lamp gripping portion 25-A corresponding to the front side. In contrast, the base portion 37a of the second mounting portion 37 is disposed at a substantially central position of the lamp gripping portion 25-A corresponding to the front side. In addition, the protrusion 37b of the second mounting portion 37 does not protrude outward from the end portion in the long side direction of the main body portion 24-A, and is on the back side of the main body portion 24-A in a plan view. It is supposed to hide.

  Next, the structure on the chassis 14-A side to which both the attachment portions 36 and 37 are attached will be described. As shown in FIGS. 8 and 9, the bottom plate 14 a -A of the chassis 14 -A has a pair of mounting holes 40 and 41 corresponding to both mounting portions 36 and 37, and a locking projection of the first mounting portion 36. 39 is provided with an opening corresponding to 39. In the following, of the two mounting holes 40 and 41, the left side shown in FIG. 9 is referred to as a first mounting hole 40, and the right side of FIG.

  The first mounting hole 40 and the second mounting hole 41 are formed in a rectangular shape in plan view in accordance with the first mounting portion 36 and the second mounting portion 37, and the long side dimension and the short side dimension thereof are the main body part. It is smaller than 24-A. Accordingly, when the lamp clip 20-A is attached, the first attachment hole 40 and the second attachment hole 41 are closed by the main body portion 24-A (FIG. 10). The locking hole 42 is disposed in the bottom plate 14a-A of the chassis 14-A between the mounting holes 40, 41 and near the first mounting hole 40. The locking projection 42 of the first mounting portion 36 enters the locking hole 42 and can be locked to the edge thereof. The locking hole 42 is also formed to be smaller than the main body 24-A in the same manner as the first mounting hole 40 and the second mounting hole 41, and is closed by the main body 24-A in the mounted state. Is done. The reflective sheet 15-A is provided with a pair of insertion holes 43 and 44 corresponding to both the mounting holes 40 and 41, respectively. The first insertion hole 43 corresponding to the first mounting hole 40 is formed in a size that can collectively surround the first mounting hole 40 and the locking hole 42. The second insertion hole 44 is set to be larger than the second attachment hole 41.

  As in the first embodiment, the lamp clip 20-A according to this embodiment is a portion exposed to the cold cathode tube 18 side (the lamp gripping portion 25-A, the support pin 26-A, and the main body portion 24-A. The front side portion 24a-A) is formed of the first material, which is a white resin excellent in light reflectivity, while facing the chassis 14-A side including both mounting portions 36 and 37. About the part, it forms with the 2nd material which is black resin excellent in light-shielding property. That is, in the mounted state, the mounting portions 36 and 37 that enter the mounting holes 40 and 41 and the locking hole 42 are the back side portions of the main body portion 24-A that closes the mounting holes 40 and 41 and the locking hole 42. Along with 24b-A, the transmittance and reflectance of light are lower than the portion of the lamp clip 20-A exposed to the cold cathode tube 18 side.

  Next, an operation for attaching the lamp clip 20-A to the chassis 14-A will be described. As shown in FIG. 11, when the reflective sheet 15-A is laid in the chassis 14-A and aligned so that the corresponding mounting holes 40, 41 and the locking holes 42 face each other in the insertion holes 43, 44, An operation of attaching the lamp clip 20-A to the bottom plate 14a-A of the chassis 14-A is performed. The lamp clip 20-A is pushed toward the bottom plate 14a-A of the chassis 14-A while aligning the mounting portions 36, 37 with the corresponding mounting holes 40, 41. Then, the mounting portions 36 and 37 are inserted into the corresponding mounting holes 40 and 41, respectively. When the back surface of the main body portion 24-A comes into contact with the reflection sheet 15-A, as shown in FIG. 12, the projections 36b, 37b of the mounting portions 36, 37 are the bottom plate 14a of the chassis 14-A. -It protrudes to the back side of A.

  From this state, the lamp clip 20-A is slid in the arrow direction shown in FIG. 12 along the long side direction of the main body portion 24-A. Then, the protrusion 36b of the first attachment portion 36 is once elastically deformed by the locking protrusion 39 running on the back side with respect to the edge of the first attachment hole 40. Further, in this process, the guide portion 38 formed at the distal end portion of the second attachment portion 37 is slidably contacted with the edge portion of the second attachment hole 41, so that a smooth sliding operation is achieved. Then, when the lamp clip 20-A slides a predetermined distance, as shown in FIG. 8, the locking projection 39 enters the locking hole 42 and the projection 36b of the first mounting portion 36 is restored. In this state, the locking surface of the locking projection 39 is locked to the edge of the locking hole 42, so that the lamp clip 20-A is displaced in the direction opposite to the sliding direction at the time of attachment, that is, the removal direction. Is regulated. In this mounted state, the edge of both mounting holes 40 and 41 of the bottom plate 14a-A of the chassis 14-A is located between the projections 36b and 37b of both mounting sections 36 and 37 and the main body section 24-A. Thus, the lamp clip 20-A is held in the attached state.

  By the way, in the state where the lamp clip 20-A is attached to the chassis 14-A, as shown in FIGS. 8 and 10, the attachment portions 36 and 37 are respectively inserted into the corresponding attachment holes 40 and 41 and the locking holes 42. As it enters, the mounting holes 40 and 41 are closed from the front side by the main body portion 24-A. The mounting portions 36 and 37 and the back side portion 24b-A of the main body portion 24-A have lower light transmissivity than the portion of the lamp clip 20-A exposed to the cold cathode tube 18 side. Therefore, even if light is transmitted through the portion exposed to the cold cathode tube 18 side, it is possible to reliably prevent the light from entering the mounting holes 40 and 41 and the locking holes 42. Thereby, it is possible to prevent light leakage from the mounting holes 40 and 41 and the locking hole 42.

  As described above, according to the present embodiment, the attachment portions 36 and 37 are provided on the base portions 36a and 37a projecting from the main body portion 24-A toward the chassis 14-A and from the base portions 36a and 37a to the main body portion 24-A. The protrusions 36b and 37b protrude in the direction along the main body part. The protrusions 36b and 37b are slid in the direction along the main body part 24-A from the state where the protrusions 36b and 37b are inserted into the mounting holes 40 and 41. The edge portions of the mounting holes 40 and 41 can be sandwiched between 24-A and 24-A. If it does in this way, it will become suitable for the type which attaches by sliding lamp clip 20-A to chassis 14-A.

<Embodiment 3>
A third embodiment of the present invention will be described with reference to FIG. The third embodiment should also be referred to as a modification of the above-described first embodiment, and shows a case where the back side portion 24b-B in the main body portion 24-B is partially formed of the second material. In the third embodiment, the same reference numerals are used for the parts changed from the first embodiment and the suffix -B is added at the end thereof, and redundant description of the structure, operation, and effect is omitted. .

  In the present embodiment, only the portion corresponding to the attachment hole 21-B in the back side portion 24b-B in the main body portion 24-B is made of the second material. Specifically, of the back side portion 24b-B (the portion excluding the front side portion 24a-B exposed to the cold cathode tube side) in the main body portion 24-B, a portion wider than the mounting hole 21-B in a plan view. As shown in FIG. 13, the second portion 35-B is made of the second material having excellent light shielding properties. The second part 35-B includes a root part of the attachment part 27-B and a part overlapping the attachment hole 21-B in the back side part 24b-B of the main body part 24-B, and is attached in a plan view. The area is wider than the hole 21-B and wider than the insertion hole 23-B of the reflection sheet 15-B. Further, the second portion 35 is formed over a range overlapping with the lamp gripping portion 25-B when viewed in plan. On the other hand, the front side portion 24a-B of the main body portion 24-B and the portion of the back side portion 24b-B excluding the second portion 35-B are made of a first material having excellent light reflectivity. This is the first part 34-B. Of the main body portion 24-B, the entire outer peripheral surface along the vertical direction shown in FIG. 13 is constituted by the first portion 34-B, which is exposed to the cold cathode tube side in the main body portion 24-B. It means that the entire surface is constituted by the first part 34-B. Therefore, compared with Embodiment 1, the light from the cold cathode tube can be reflected more efficiently to the optical member side.

  As described above, according to the present embodiment, the above-described embodiment is provided as a light shielding effect for the mounting hole 21-B even if the entire back side portion 24b-B of the main body portion 24-B is not the second portion 35-B. 1 can exhibit the same performance.

<Embodiment 4>
A fourth embodiment of the present invention will be described with reference to FIG. The fourth embodiment should also be referred to as a modification of the second embodiment described above. The back side portion 24b-C in the main body portion 24-C is partially formed of the second material, and the third embodiment described above. The same as above. In the fourth embodiment, the same reference numerals are used for the parts changed from the second embodiment described above, and the suffix -C is added at the end thereof, and redundant description of the structure, operation, and effect is omitted. .

  Of the back side portion 24b-C (the portion excluding the front side portion 24a-C exposed to the cold cathode tube side) in the main body portion 24-C, the first mounting hole 40-C and the locking hole 42-C in a plan view. As shown in FIG. 14, the wider part is the second part 35-C made of the second material having excellent light shielding properties. The second part 35-C overlaps the base part of the first attachment part 36-C, the first attachment hole 40-C, and the locking hole 42-C in the back side part 24b-C of the main body part 24-C. And includes a portion wider than the first mounting hole 40-C and the locking hole 42-C in a plan view and wider than the first insertion hole 43-C of the reflective sheet 15-C. . Further, the second portion 35-C is formed over a wider range than the range overlapping the lamp gripping portion 25-C when viewed in plan. On the other hand, the front side portion 24a-C of the main body portion 24-C and the portion of the back side portion 24b-C excluding the second portion 35-C are made of a first material having excellent light reflectivity. This is the first part 34-C.

  In FIG. 14, only the portion of the main body portion 24-C that closes the first mounting hole 40-C and the locking hole 42-C is illustrated, but the back side portion 24b-C of the main body portion 24-C. Similarly, the portion that closes the second mounting hole can also be the second portion made of the second material.

<Embodiment 5>
Embodiment 5 of the present invention will be described with reference to FIG. The fifth embodiment should be referred to as a further modification of the above-described first embodiment, and shows a modification of the formation range of the second portion 35-D in the main body portion 24-D from the third embodiment. In the fifth embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals and suffixed with -D at the end thereof, and redundant description of the structure, operation, and effect is omitted. .

As shown in FIG. 15, the second portion 35-D made of the second material is formed only in the portion overlapping the insertion hole 23-D in the back side portion 24b-D of the main body portion 24-D. The second portion 35-D is formed in the same range as the insertion hole 23-D in a plan view in the back side portion 24b-D of the main body portion 24-D, including the root portion of the mounting portion 27-D. Is slightly wider than the mounting hole 21-D of the chassis 14-D. On the other hand, the front side portion 24a-D of the main body portion 24-D and the portion of the back side portion 24b-D excluding the second portion 35-D described above are the first portion 34-D made of the first material. It has become.
Even with the configuration as described above, since the insertion hole 23-D larger than the attachment hole 21-D is covered over the entire area by the second portion 35-D, a sufficient light shielding effect for the attachment hole 21-D can be obtained. Can do.

<Embodiment 6>
A sixth embodiment of the present invention will be described with reference to FIG. The sixth embodiment should be said to be a further modification of the above-described second embodiment. The formation range of the second portion 35-E in the main body portion 24-E is further changed from the fourth embodiment. The same as above. In the sixth embodiment, the same reference numerals are used for the parts changed from the second embodiment described above, and the suffix -E is added to the end thereof, and redundant description of the structure, operation, and effect is omitted. .

As shown in FIG. 16, the second portion 35-E made of the second material is formed only in the portion overlapping the first insertion hole 43-E in the back side portion 24b-E of the main body portion 24-E. Yes. The second portion 35-E is formed in the same range as the first insertion hole 43-E in the back side portion 24b-E of the main body portion 24-E, including the root portion of the first attachment portion 36-E in a plan view. The range is slightly wider than the range extending from the first mounting hole 40-E to the locking hole 42-E of the chassis 14-E. On the other hand, the front side portion 24a-E of the main body portion 24-E and the portion of the back side portion 24b-E excluding the second portion 35-E are the first portion 34-E made of the first material. It has become. In addition, although illustration is abbreviate | omitted, also about the part corresponding to a 2nd attachment hole and a 2nd penetration hole among the back side parts 24b-E of the main-body part 24-E, it is set as the 2nd part of the range similar to the above. it can.
Even with the configuration as described above, the first insertion hole 43-E (second mounting hole) larger than the first mounting hole 40-E and the locking hole 42-E (second mounting hole) is the second portion 35-. Since the entire region is covered with E, it is possible to sufficiently obtain a light shielding effect for the first mounting hole 40-E and the locking hole 42-E (second mounting hole).

<Embodiment 7>
A seventh embodiment of the present invention will be described with reference to FIG. The seventh embodiment should be called a further modification of the above-described first embodiment, and shows a modification of the formation range of the second portion 35-F in the main body portion 24-F from the fifth embodiment. In the seventh embodiment, parts changed from those in the first embodiment are denoted by the same reference numerals and suffixed with -F, and redundant description of the structure, action, and effect is omitted. .

  As shown in FIG. 17, the second portion 35-F made of the second material is formed only at the base portion of the attachment portion 27-F in the back side portion 24b-F of the main body portion 24-F. The second portion 35-F is formed in the same range as the base portion 32-F of the mounting portion 27-F in the back side portion 24b-F of the main body portion 24-F in a plan view, and the range is the mounting hole 21-F. It is narrower than F. On the other hand, the front side portion 24a-F of the main body portion 24-F and the portion of the back side portion 24b-F excluding the second portion 35-F are the first portion 34-F made of the first material. It has become.

<Eighth embodiment>
An eighth embodiment of the present invention will be described with reference to FIG. The eighth embodiment should be said to be a further modification of the above-described first embodiment, and shows only the attachment portion 27-G formed of the second material. In the eighth embodiment, the same reference numerals are used for the parts changed from the first embodiment and the suffix -G is added to the end thereof, and redundant description of the structure, operation, and effect is omitted. .

  In the lamp clip 20-G, as shown in FIG. 18, the entire area of the main body portion 24-G is formed of the first material, whereas the mounting portion 27- is inserted into the mounting hole 21-G. Only G is formed of the second material. Even when light is slightly transmitted through the main body portion 24-G made of the first material in the mounting state, the mounting portion 27-G that has entered the mounting hole 21-G has a good light shielding property. Therefore, it is possible to suppress the light from being transmitted through the mounting hole 21-G.

<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) In each of the above-described embodiments, the case where the lamp clip is formed by two-color molding has been shown. However, by assembling a part molded by resin with the first material and a part molded by resin with the second material. A lamp clip is also included in the present invention.

  (2) In each of the above-described embodiments, the first material and the second material are made of the same material (polycarbonate resin) having different colors (light transmittance, etc.). The material may be different from that of the second material.

  (3) In each of the above-described embodiments, the case where the lamp clip is formed of two kinds of materials having different light transmittances and the like has been shown. However, the lamp clip is formed of one kind of material and the surface thereof is colored. Thus, the light transmittance or the like may be partially varied. Specifically, the entire lamp clip may be resin-molded with a white resin, and then a black paint may be applied and colored on the surface of the mounting portion or the back side surface of the main body portion. Conversely, the entire lamp clip may be molded with a black resin, and then the white color may be applied to the lamp gripping portion, the support pin, or the front surface of the main body portion to be colored.

  (4) In each of the above-described embodiments, the lamp clip in which the portion exposed to the cold cathode tube side is white is illustrated, but it can be changed to other colors such as milky white in addition to white. It is also possible to make the exposed part transparent.

  (5) In each of the above-described embodiments, the lamp clip whose portion facing the attachment portion or the chassis side is illustrated as black, but can be changed to other colors such as gray in addition to black.

  (6) In each of the above-described embodiments, the lamp clip in which the portion facing the mounting portion or the chassis side has both light transmittance and reflectance lower than the portion exposed to the cold cathode tube side is exemplified. However, only the light transmittance may be lowered.

  (7) In addition to the above-described embodiments, the formation range of the second part (the part made of the second material) in the main body part can be appropriately changed. Specifically, as a modification of the fifth embodiment, the second portion may be formed in a range narrower than the insertion hole in a range where the second portion overlaps the attachment hole in the back side portion of the main body portion. In addition, as a modified example of the sixth embodiment, the second portion overlaps the first mounting hole and the locking hole in the back side portion of the main body portion and spans them, and in a range narrower than the first insertion hole. It may be formed. Note that this structure can be similarly applied to portions corresponding to the second mounting hole and the second insertion hole. In addition to the above, the present invention includes the second portion formed in a narrower range than the mounting holes (first mounting hole, second mounting hole) in a plan view.

  (8) In each of the above-described embodiments, the case where the entire attachment portion is formed of the second material has been described. However, the present invention includes a case where only a part of the attachment portion is formed of the second material.

  (9) In each of the above-described embodiments, the attachment portion is disposed so as to overlap with the lamp gripping portion. However, the lamp gripping portion and the attachment portion are not disposed so as to overlap each other in a plan view. Included in the invention.

  (10) In each of the above-described embodiments, as the “entrance portion” described in the claims, the attachment portion forming the attachment structure of the lamp clip to the chassis is exemplified. However, the portion other than the attachment structure is referred to as the “entrance portion”. You can also Specifically, when the lamp clip has a positioning portion capable of positioning the lamp clip in the plate surface direction of the main body by entering the positioning hole formed in the chassis, the positioning portion May be used as an “entrance portion”. In that case, the positioning hole becomes the “hole” described in the claims.

  (11) Besides the above-described embodiments, the number and shape of the attachment portions can be appropriately changed. Further, the numbers and shapes of the lamp gripping portions and the support pins can be appropriately changed. Furthermore, the shape of the main body can be changed as appropriate.

  (12) In the first and second embodiments described above, the case where the thickness of the first portion and the thickness of the second portion constituting the main body portion are substantially the same is shown, but the ratio of the thickness can be changed as appropriate. is there.

  (13) In each of the above-described embodiments, a case where a cold cathode tube is used as a light source has been shown. However, for example, a device using another type of light source such as a hot cathode tube is included in the present invention.

  (14) In each of the embodiments described above, the chassis is made of metal sheet metal, but may be made of resin molding.

  (15) In each of the embodiments described above, a TFT is used as a switching element of a 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)). In addition to the liquid crystal display device for display, the present invention can also be applied to a liquid crystal display device for monochrome display.

  (16) In each of the above-described embodiments, the liquid crystal display device using the liquid crystal panel as the display panel has been exemplified. However, the present invention is applicable to display devices using other types of display panels.

  (17) In each of the above-described embodiments, the television receiver provided with the tuner has been exemplified. However, the present invention can also be applied to a display device that does not include the tuner.

1 is an exploded perspective view showing a schematic configuration of a television receiver according to Embodiment 1 of the present invention. Exploded perspective view showing schematic configuration of liquid crystal display device Sectional drawing which shows the lamp clip in a liquid crystal display device Plan view showing mounting holes in chassis Top view of the lamp clip Top view showing the lamp clip attached to the chassis Sectional drawing which shows the state before attaching a lamp clip to a chassis Sectional drawing which shows the lamp clip in the liquid crystal display device which concerns on Embodiment 2 of this invention. Plan view showing mounting holes and locking holes in the chassis Top view showing the lamp clip attached to the chassis Sectional drawing which shows the state before attaching a lamp clip to a chassis Sectional drawing which shows the state before sliding a lamp clip Sectional drawing which shows the lamp clip which concerns on Embodiment 3 of this invention. Sectional drawing which shows the lamp clip which concerns on Embodiment 4 of this invention. Sectional drawing which shows the lamp clip which concerns on Embodiment 5 of this invention. Sectional drawing which shows the lamp clip which concerns on Embodiment 6 of this invention. Sectional drawing which shows the lamp clip which concerns on Embodiment 7 of this invention. Sectional drawing which shows the lamp clip which concerns on Embodiment 8 of this invention.

Explanation of symbols

10. Liquid crystal display device (display device)
11 ... Liquid crystal panel (display panel)
12 ... Backlight device (lighting device)
14 ... Chassis 14a ... Bottom plate (attachment surface)
18 ... Cold cathode tube (lamp)
20 ... Lamp clip (lamp holder)
21 ... Mounting hole (hole)
24 ... Main body 24a ... Front side part (exposed part)
24b ... Back side part (excluding the exposed part of the main body)
25. Lamp gripping part (exposed part)
26 ... support pin (exposed part)
27 ... Mounting part (entrance part)
32 ... Base 33 ... Projection 34 ... First part 35 ... Second part 36 ... First attachment part (entrance part)
36a ... Base portion 36b ... Projection portion 37 ... Second mounting portion (entrance portion)
37a ... Base 37b ... Projection 40 ... First mounting hole (hole)
41 ... Second mounting hole (hole)
42 ... Locking hole (hole)
Cb ... Cabinet H ... Heat dissipation TV ... TV receiver

Claims (18)

A lamp,
A lamp holder for holding the lamp;
A chassis having an attachment surface to which the lamp holder is mounted, and a hole provided in the attachment surface;
An illuminating device comprising: an entrance portion that is provided in the lamp holder and is capable of entering into the hole portion, and having a light transmittance lower than an exposed portion of the lamp holder that is exposed to the lamp side. The lighting device according to claim 1, wherein the exposed portion has a light reflectance higher than that of the entry portion. The lamp holder includes a substantially plate-like main body attached to the adherend surface, and the entry portion protrudes from the main body.
3. The lighting device according to claim 1, wherein a light transmittance of a portion of the main body portion excluding the exposed portion and a base portion of the entry portion is lower than that of the exposed portion. The lighting device according to claim 3, wherein a portion of the main body portion excluding the exposed portion and overlapping with the hole portion has a light transmittance lower than that of the exposed portion. The lighting device according to claim 4, wherein a portion of the main body portion excluding the exposed portion and wider than a portion overlapping the hole portion has a light transmittance lower than that of the exposed portion. . The main body portion includes a first portion including the exposed portion and a second portion stacked on the chassis side with respect to the first portion, and the second portion has a light transmittance of the first portion. The lighting device according to claim 5, wherein the lighting device is lower than one part. The lighting device according to claim 6, wherein the second part has the same light transmittance as that of the entry part. The lighting device according to claim 1, wherein the entry portion is disposed at a position overlapping the lamp. The lighting device according to any one of claims 1 to 8, wherein the entrance portion and the exposed portion are formed of materials having different light transmittances. The lighting device according to claim 9, wherein the lamp holder is molded in two colors from materials having different light transmittances. The lamp holder includes a substantially plate-like main body attached to the adherend surface, and the entry portion protrudes from the main body.
The lighting device according to any one of claims 1 to 10, wherein the entry portion can sandwich an edge portion of the hole portion with the main body portion. The entry portion includes a base portion that protrudes from the main body portion toward the chassis, and a protrusion that protrudes in a direction along the main body portion from the base portion, and the protrusion portion is inserted into the hole portion. The lighting device according to claim 11, wherein an edge of the hole can be sandwiched between the main body and the body. The entry portion includes a base portion protruding from the main body portion toward the chassis, and a protrusion protruding from the base portion in a direction along the main body portion, and the protrusion portion is inserted into the hole portion. The lighting device according to claim 11, wherein the edge of the hole can be clamped between the main body and the main body by being slid in a direction along the main body. The lighting device according to any one of claims 1 to 13, wherein the exposed portion is white, whereas the entry portion is black. A display device comprising: the illumination device according to any one of claims 1 to 14; and a display panel that performs display using light from the illumination device. The display device according to claim 15, wherein the display panel is a liquid crystal panel in which liquid crystal is sealed between a pair of substrates. A television receiver comprising the display device according to claim 15 or 16. The television receiver according to claim 17, wherein a cabinet that covers the chassis of the display device is provided, and a heat radiating hole is formed in the cabinet.

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