JP6333906B2 - Display device and television receiver - Google Patents

Description

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

  The liquid crystal display device includes a liquid crystal display panel that displays an image, and a backlight that illuminates the liquid crystal display panel from the rear side. There has been disclosed a display device including an edge light type backlight in which a rear side of a liquid crystal display panel is covered with a plate-shaped light guide plate and illumination light is incident from an end face of the light guide plate (Patent Document 1).

  The light guide plate illuminates the liquid crystal display panel by uniformly radiating illumination light incident from the end face from a wide surface on the liquid crystal panel side. By the action of the backlight, the user can visually recognize the video displayed on the liquid crystal display panel.

JP 2014-96234 A

  In the display device disclosed in Patent Document 1, the side surface of the light guide plate disposed on the rear side of the display panel and the illumination unit disposed along the edge of the display panel are opposed to each other. When an external force is applied to the display device, the positional relationship between the illuminating unit and the light guide plate is shifted, which may cause display unevenness.

  In one aspect, an object of the present invention is to provide a display device that can prevent display unevenness due to a shift in the positional relationship between an illumination unit and a light guide plate even when an external force is applied to the display panel.

The display device according to the present invention includes a rear plate portion disposed on the rear side of the display panel that displays an image on the front surface, a bottom plate portion that protrudes toward the display panel from an edge of the rear plate portion, and the rear plate portion. A heat radiating plate having a holding portion protruding shorter than the bottom plate portion in the same direction as the bottom plate portion, an illuminating portion that is held by the holding portion of the heat radiating plate and illuminates the rear side of the display panel, and the display A rectangular plate-shaped display unit having a panel, and a plate-shaped base unit that accommodates the bottom plate unit, protrudes from one side of the display unit to the display surface side of the display panel, and forms an L shape with the display unit With .

  In the display device according to the present invention, the rear plate portion has a thicker portion thicker than other portions on the side opposite to the bottom plate portion of the base end portion of the holding portion.

  In the display device according to the present invention, the rear plate portion has a thin portion thinner than other portions between the holding portion and the bottom plate portion.

  The display device according to the present invention includes a light guide plate that is disposed on a rear surface of the display panel and has one end surface facing the illumination unit.

  A television receiver according to the present invention includes the display device according to any one of the above and a receiving unit that receives a television broadcast, and based on the television broadcast received by the receiving unit, An image is displayed on the display device.

  Even when an external force is applied to the display panel, it is possible to provide a display device or the like that can prevent display unevenness due to a positional difference between the illumination unit and the light guide plate.

It is an external appearance perspective view of a display apparatus. It is a side view of a display apparatus. It is a disassembled perspective view of the principal part of a display apparatus. It is a longitudinal cross-sectional view of the center part of a display apparatus. It is a perspective view of a heat sink. It is an expansion perspective view of a heat sink. It is a schematic diagram which shows the state which combined the side housing and the heat sink. It is a perspective view of a reinforcement body. It is a perspective view inside a display apparatus. It is a cross-sectional view of a display device. It is an expansion perspective view of a display panel. It is an expansion perspective view of the 1st substrate stand. It is an expansion perspective view of the 2nd substrate stand. It is explanatory drawing which shows a simulation model. It is explanatory drawing which shows the simulation model of a comparative example. It is explanatory drawing which shows the simulation result of this Embodiment. It is explanatory drawing which shows the simulation result of a comparative example. FIG. 6 is an enlarged vertical cross-sectional view of a central portion of the display device according to the second embodiment. 6 is a longitudinal sectional view of a central portion of a display device according to Embodiment 3. FIG. FIG. 6 is an enlarged vertical cross-sectional view of a central portion of a display device according to a fourth embodiment.

[Embodiment 1]
FIG. 1 is an external perspective view of a display device. In the following description, the front, back, left, right, top, and bottom orientations indicated by arrows in each figure are used. The display device 10 includes a substantially rectangular plate-like display unit 11 and a substantially rectangular plate-like base unit 20. The display unit 11 includes a rectangular flat display panel 12. The upper and left and right edges of the display panel 12 are covered with a side housing 13 that is an exterior member of the display unit 11.

  FIG. 2 is a side view of the display device 10. The base part 20 protrudes forward from the lower side of the display part 11. The base unit 20 does not protrude behind the display unit 11. That is, the display device 10 has a shape in which the display unit 11 and the base unit 20 are continuous in an L shape. The upper surface of the base part 20 is a plane. An inclined surface that is inclined rearward and downward is provided at the protruding end portion of the base portion 20 on the front surface side.

  FIG. 3 is an exploded perspective view of the main part of the display device 10. FIG. 4 is a longitudinal sectional view of the central portion of the display device 10. An outline of a main part of the display device 10 will be described with reference to FIGS. 3 and 4.

  The display unit 11 includes a light guide plate 14, a heat radiating plate 31, and a rear housing 16 in addition to the display panel 12 and the side housing 13.

  The light guide plate 14 is a rectangular acrylic plate having high transparency, for example. The wide surface of the light guide plate 14 has substantially the same shape as the wide surface of the display panel 12. An optical sheet is provided on the wide surface of the light guide plate 14 on the display panel 12 side. A reflection sheet is provided on the wide surface of the light guide plate 14 opposite to the display panel 12.

  The heat radiating plate 31 includes a rear plate portion 32, a bottom plate portion 34, and a holding portion 35, each having a substantially rectangular plate shape. The rear plate portion 32 covers the lower portion of the light guide plate 14 from the rear side. The bottom plate portion 34 projects forward from the lower side of the rear plate portion 32. The holding portion 35 slightly protrudes from the rear plate portion 32 forward and slightly shorter than the bottom plate portion 34 slightly above the bottom plate portion 34.

  The lengths of the long sides of the rear plate portion 32, the bottom plate portion 34, and the holding portion 35 are substantially the same as the length of the lower side of the display portion 11. The holding part 35 is parallel to the bottom plate part 34. That is, the bottom plate portion 34, the holding portion 35, and the rear plate portion 32 form a substantially F shape as shown in FIG.

  The illumination board 15 is fixed on the upper surface of the holding part 35 so as to face the lower end face of the light guide plate 14. The illumination board 15 is a long board-shaped circuit board having substantially the same length as the long side of the light guide plate 14. A plurality of white LEDs (Light Emitting Diodes) are mounted on the surface of the illumination substrate 15 facing the light guide plate 14.

  The rear housing 16 is an exterior member that covers the rear surface of the display unit 11. The rear housing 16 has a back plate portion 161 and a lower plate portion 162. The back plate portion 161 has a rectangular plate shape that is substantially the same shape as the display panel 12. The lower plate portion 162 has a rectangular plate shape that extends forward from the lower side of the back plate portion 161. The rear housing 16 is manufactured by bending a rectangular thin steel plate or the like.

  The side housing 13 is a substantially U-shaped frame that opens on the lower side, and has a front edge 131 and a rear edge 132 that protrude inward. The rear edge 132 is shorter than the front edge 131. The front edge 131 contacts the display panel 12 and the light guide plate 14. The rear edge 132 abuts on the rear housing 16. As shown in FIG. 4, the side housing 13 is manufactured by bending a metal bar having a substantially U-shaped cross section in which a front edge 131 and a rear edge 132 are connected at one end.

  The base unit 20 includes a decorative plate 25, an upper surface housing 26, a lower surface housing 21, and a first weight 51. Two speakers 22, an input board 23, a control board 24, a first board base 41, a second board base 46, and a fourth weight 54 are accommodated between the upper case 26 and the lower case 21. .

  The lower surface casing 21 includes a rectangular bottom portion 211 and an edge portion 212 that rises upward from the front edge of the bottom portion 211. The lower case 21, the lower plate part 162 of the rear case 16, and the bottom plate part 34 of the heat radiating plate 31 are overlapped and fixed by the first screw 61 from the lower side. The lower surface casing 21 and the bottom plate portion 34 of the heat radiating plate 31 further extend in the forward direction and are fixed by a second screw 62 from below. A plurality of first screws 61 and second screws 62 are arranged along the left-right direction.

  A rectangular plate-like fourth weight 54 is fixed on the bottom 211 at a position closer to the front from the center. The fourth weight 54 is preferably made of a material having high thermal conductivity and high density, such as a copper alloy.

  A second substrate base 46 is fixed on the fourth weight 54. Details of the shape of the second substrate base 46 will be described later. On the second board base 46, two speakers 22, an input board 23, a control board 24, a wiring member (not shown), and the like are arranged.

  The upper case 26 covers the upper opening of the lower case 21. The top housing 26 has a rectangular box-shaped box-like part 261 with the bottom facing upward, and an outer edge part 262 projecting forward and left and right from the edge of the box-like part 261. A first weight 51 is fixed on the outer edge 262 on the front side. The first weight 51 is a long plate having a length that extends over substantially the entire length of the base portion 20 in the left-right direction. The first weight 51 and the box-shaped portion 261 are covered with a decorative plate 25 that is an exterior part.

  FIG. 5 is a perspective view of the heat sink 31. FIG. 6 is an enlarged perspective view of the heat radiating plate 31. The heat radiating plate 31 has a rectangular plate-shaped side plate portion 33 that protrudes forward along the left and right short sides of the rear plate portion 32. A fourth hole 74 is provided in the lower portion of the side plate portion 33. Further, the side plate portion 33 is provided with four fifth holes 75 at substantially equal intervals. Female threads are provided on the inner surfaces of the fourth hole 74 and the fifth hole 75. The functions of the third hole 73, the fourth hole 74, and the fifth hole 75 will be described later. The number of the fifth holes 75 is not limited to four shown in FIG. An arbitrary number of fifth holes 75 can be provided according to the dimensions of the display device 10 and the like.

  The bottom plate portion 34 includes a first hole 71 and a second hole 72 disposed on the front side of the first hole 71. A plurality of first holes 71 and second holes 72 are arranged at predetermined intervals in the left-right direction. Female threads are provided on the inner surfaces of the first hole 71 and the second hole 72. The first screw 61 described using FIG. 4 is inserted into the first hole 71. The second screw 62 described with reference to FIG. 4 is inserted into the second hole 72.

  A third hole 73 is provided near the rear of the left and right ends of the bottom plate portion 34. The third hole 73 is a round hole. The rear plate portion 32 has a thick portion 37 that is thicker than other portions at a portion that contacts the upper side of the holding portion 35.

  The heat radiating plate 31 is manufactured by cutting an extruded product of a highly heat conductive metal such as an aluminum alloy or a copper alloy having an F-shaped cross section and bending the end portion to form the side plate portion 33.

  FIG. 7 is a schematic view showing a state in which the side housing 13 and the heat radiating plate 31 are combined. FIG. 7 is a schematic view seen from the rear side. A structure for ensuring the strength of the display unit 11 will be described with reference to FIGS. 3 to 7.

  The rear edge 132 of the side housing 13 is removed at the lower portion of the side housing 13, and the heat radiating plate 31 is fitted into that portion to form a rectangular frame. The front side edge 131 is also removed at the lower end of the side housing 13.

  The inner surface of the side housing 13 and the outer surface of the side plate portion 33 of the heat sink 31 are in contact with each other. The side housing 13 and the side plate portion 33 are fixed by a countersunk screw inserted into the fifth hole 75 from the outside of the side housing 13. As described above, by fixing the side housing 13 and the heat radiating plate 31 in contact with each other, a frame of a structural member that is not easily distorted even when subjected to an external force is configured.

  As shown in FIG. 3, the display device 10 includes two reinforcing bodies 27 that reinforce the connection between the display unit 11 and the base unit 20. The two reinforcing bodies 27 are symmetrical. FIG. 8 is a perspective view of the reinforcing body 27. FIG. 8 shows the right reinforcing body 27.

  The reinforcing body 27 includes a first plate portion 271, a second plate portion 272, and a third plate portion 273 that are each substantially rectangular. The first plate portion 271 protrudes forward from the long side of the second plate portion 272. The third plate portion 273 protrudes rearward from the short side of the second plate portion 272. The first plate portion 271 has a screw hole at the center. The 3rd board part 273 has a through-hole in the center part. The reinforcing body 27 is manufactured by bending a substantially L-shaped steel plate at two locations. The first plate part 271, the second plate part 272, and the third plate part 273 are substantially perpendicular to each other.

  FIG. 9 is a perspective view of the inside of the display device 10. FIG. 9 shows a state in which the display unit 11 and the lower surface casing 21 are assembled. FIG. 10 is a cross-sectional view of the display device 10. FIG. 10 shows a right end portion of a cross section of the display device 10 taken along line XX of FIG. Hereinafter, the structure of the right end portion of the display device 10 will be described as an example, but the left side of the display device 10 has the same structure.

  The reinforcing body 27 is disposed on the lower right side of the display unit 11. The first plate portion 271 is disposed on the bottom plate portion 34 of the heat radiating plate 31. The third plate portion 273 is sandwiched between the inner surface of the lower surface housing 21 and the outer surface of the side surface housing 13.

  The round hole provided in the central portion of the third plate portion 273 is provided at a position corresponding to the fourth hole 74 of the side plate portion 33 described with reference to FIG. The side housing 13 and the lower housing 21 are provided with round holes (not shown) at positions corresponding to the fourth holes 74. As shown in FIG. 10, the lower surface housing 21, the reinforcing body 27, the side surface housing 13, and the side plate portion 33 of the heat radiating plate 31 are fixed by a fourth screw 64 inserted from the outside of the lower surface housing 21.

  The screw hole provided in the central portion of the first plate portion 271 is provided at a position corresponding to the third hole 73 of the bottom plate portion 34 described with reference to FIG. The lower plate portion 162 of the rear housing 16 is also provided with a round hole (not shown) at a position corresponding to the third hole 73. Furthermore, a countersink hole is provided at a position corresponding to the third hole 73 in the bottom portion 211 of the lower surface casing 21. The lower surface housing 21, the rear surface housing 16, the heat radiating plate 31, and the reinforcing body 27 are fixed by a third screw 63 inserted from below. The third screw 63 is a countersunk screw.

  As described above, the display unit 11 and the base unit 20 are firmly fixed by using the reinforcing bodies 27 on the left and right. In addition, you may fix the lower surface housing | casing 21, the side surface housing | casing 13, and the heat sink 31 using two or more screws, without using the reinforcement body 27. FIG.

  FIG. 11 is an enlarged perspective view of the display panel 12. A plurality of driver boards 17 are connected outward along the lower side of the display panel 12. The driver substrate 17 is an example of a flexible substrate connected to the display panel 12. The driver board 17 is rectangular, and one long side is connected to the display panel 12. For the driver substrate 17, for example, an FPC (Flexible printed circuits) in which a polyimide sheet and a metal wiring pattern are stacked is used.

  A driver control board 19 is connected to the other long side of the driver board 17. As shown in FIG. 3, the driver control board 19 is a rectangular board having a long side that is about half the long side of the display panel 12. The display device 10 includes two driver control boards 19. One driver control board 19 is connected to the display panel 12 via six driver boards 17.

  As shown in FIG. 4, a driver 18 is mounted on the rear surface of the driver board 17. The driver 18 is disposed in front of the display surface of the display panel 12. The driver 18 is an integrated circuit that outputs a drive signal for driving each pixel of the display panel 12 based on a signal input from the driver control board 19. The driver 18 is an example of an integrated circuit disposed in the vicinity of the display panel 12. The driver control board 19 is an example of an integrated circuit control board.

  The number of driver control boards 19 and driver boards 17 is not limited to that shown in FIG. Any number of driver control boards 19 and driver boards 17 according to specifications such as the number of pixels of the display panel 12 can be used. A plurality of drivers 18 may be mounted on one driver board 17.

  FIG. 12 is an enlarged perspective view of the first substrate base 41. The shape of the first substrate base 41 will be described with reference to FIGS. 3 and 12. The first substrate base 41 has a two-step staircase plate portion 43 that is long in the left-right direction, and a substrate holding portion 42. The board holding portion 42 is a J-shaped plate that extends in the forward direction from the center of the staircase plate 43 and extends upward and then turns back.

  FIG. 13 is an enlarged perspective view of the second substrate base 46. The shape of the second substrate base 46 will be described with reference to FIGS. 3 and 13. The second substrate base 46 has a main substrate mounting portion 47 that extends forward at the center of the long side of the front side of the rectangular plate that is long in the left-right direction, and a speaker mounting that extends forward to the left and right of the main substrate mounting portion 47. A placement part 48 is provided. Furthermore, the second substrate base 46 has a heat transfer section 49 that rises obliquely upward and rearward from the long side of the rectangular plate that is long in the left-right direction. The second substrate base 46 is an example of a heat transfer member of the present embodiment.

  The second substrate base 46 is manufactured by bending a metal plate having high thermal conductivity such as an aluminum alloy or a copper alloy. The second substrate base 46 may be manufactured by injection molding a high heat conductive resin such as nylon resin or polycarbonate resin of high heat conductive grade.

  As shown in FIG. 4, the first board base 41 is fixed to the upper part of the bottom plate part 34 of the heat radiating plate 31 with the board holding part 42 facing the front side. The second substrate base 46 is fixed so that the heat transfer section 49 is located near the lower side of the lower side of the display panel 12.

  As shown in FIG. 9, the driver substrate 17 is bent forward in the base portion 20, that is, toward the display surface. As shown in FIG. 4, the end portion of the driver control board 19 is held by the board holding section 42 at the center of the display device 10. The driver board 17 contacts the heat transfer section 49 on the back side of the part where the driver 18 is mounted.

  As shown in FIG. 3, the speaker 22 is fixed on the speaker mounting portion 48. On the main board mounting portion 47, the input board 23, the control board 24, and the like are fixed. Furthermore, the wiring etc. which connect each board | substrate etc. are accommodated in the inside of the base part 20. FIG.

  The input board 23 is a board that receives a video signal input from the outside and performs predetermined signal processing. The control board 24 is a board that receives a signal output from the input board 23 and outputs a signal for controlling the driver control board 19. The control board 24 is an example of a control unit that controls the display panel 12.

  An outline of the operation of the display device 10 will be described. Light emitted from the white LED mounted on the illumination board 15 enters the lower surface of the light guide plate 14. The incident light is radiated from the wide surface on the front side of the light guide plate 14 as planar light by the action of the light guide plate 14. The emitted planar light is transmitted from the back surface of the display panel 12 to the front side. That is, the light guide plate 14 and the illumination substrate 15 constitute a backlight that illuminates the display panel 12 from the back.

  The illumination board 15 is an example of an illumination unit of the present embodiment that illuminates the rear side of the display panel 12. A light emitter such as an organic EL (ElectroLuminescence) element may be mounted on the illumination board 15 instead of the white LED. The illumination unit may be a light emitter such as a cold cathode tube.

  Based on the video signal input from the input board 23, the control board 24 connects a signal for controlling the driver control board 19. Based on the control of the driver control board 19, the driver 18 controls each pixel constituting the display panel 12. Thereby, each pixel which comprises the display panel 12 permeate | transmits and shields the light radiated | emitted from the backlight. The user can visually recognize the video displayed on the display panel 12 by the action of the backlight.

  Note that some or all of the functions of the input board 23 and the control board 24 may be executed by a device provided outside the display device 10.

  The heat dissipation of the display device 10 will be described. Among the components constituting the display device 10, the illumination board 15 and the driver 18 are components that generate a large amount of heat. A structure for radiating heat generated from each component will be described.

  Heat generated from the illumination board 15 is transmitted to the rear casing 16 and the lower casing 21 via the heat radiating plate 31. The transmitted heat is further diffused from the rear casing 16 and the lower casing 21 to the upper casing 26, the side casing 13, and the floor, wall, and air around the display device 10. As described above, the heat generated in the illumination board 15 is dissipated to the outside of the display device 10 and the illumination board 15 is prevented from being overheated.

  Heat generated from the driver 18 is transmitted to the heat transfer section 49 via the driver board 17. The transmitted heat is diffused throughout the second substrate base 46 and is transmitted to the lower surface casing 21 via the fourth weight 54 having excellent thermal conductivity, and is transmitted to the floor, wall, air, etc. around the display device 10. Spread. As described above, the heat generated in the driver 18 is radiated to the outside of the display device 10 and the driver 18 is prevented from being overheated.

  Note that a small amount of heat conductive grease may be applied to the driver board 17 or the heat transfer section 49. By assisting heat conduction in this way, heat can be radiated more efficiently.

  The prevention of the overturn of the display device 10 will be described. As described above, since the display device 10 of the present embodiment is L-shaped, it can be installed so that the rear surface of the display unit 11 is in close contact with the wall surface. However, the case where the display apparatus 10 is installed in a place away from the wall surface will be described here.

  As described with reference to FIG. 4, the first weight 51 and the fourth weight 54 are fixed to the front side of the base portion 20. Due to these weights, the center of gravity of the display device 10 is located on the front side compared to the case where there is no weight. Therefore, even if a backward force is applied to the display unit 11, the display device 10 can be prevented from falling backward.

  Deformation of the heat dissipation plate 31 when an external force is applied will be described based on simulation results. FIG. 14 is an explanatory diagram showing a simulation model. FIG. 15 is an explanatory diagram showing a simulation model of a comparative example.

  FIG. 14 shows a model for simulating deformation of the display device 10 of the present embodiment. In the model shown in FIG. 14, the heat radiating plate 31 includes seven first screws 61, seven second screws 62 (see FIG. 4), two third screws 63 (see FIG. 10), and two first screws 61. It is fixed to the lower case 21 by four screws 64 (see FIG. 10).

  FIG. 15 shows a model for simulating deformation of the display device 10 of the comparative example in which the illumination board 15 is fixed to the bottom plate portion 34. In the model shown in FIG. 15, the heat radiating plate 31 is fixed to the lower surface casing 21 by seven first screws 61, two third screws 63 and two fourth screws 64.

  FIG. 16 is an explanatory diagram showing a simulation result of the present embodiment. FIG. 17 is an explanatory diagram illustrating a simulation result of the comparative example. In either case, a deformation is simulated when a force of 100 Newton is applied backward to the center of the upper side of the display unit 11.

  FIG. 16 shows a simulation result of the deformation of the surface indicated by A in FIG. 14, that is, the front end surface of the holding portion 35. FIG. 17 shows a simulation result of the deformation of the surface indicated by B in FIG. 16 and 17 show the deformation amount enlarged in the vertical direction at the same scale.

  As shown in FIG. 16, the holding portion 35 of the present embodiment is in a flat state even when a force is applied. This is because the holding portion 35 is provided separately from the bottom plate portion 34 that fixes the heat radiating plate 31 and the lower surface casing 21, and therefore the influence of the portion fixed by the first screw 61 or the like is not easily transmitted to the holding portion 35. On the other hand, as shown in FIG. 17, in the comparative example, the surface on which the illumination board 15 is placed is deformed so as to wave. This is because in the comparative example, the influence of the portion fixed by the first screw 61 or the like is directly transmitted to the surface on which the illumination board 15 is placed.

  Note that, as described above, the rear plate portion 32 has the thick portion 37 that is thicker than the other portions in the portion that is in contact with the upper side of the holding portion 35, so that deformation is unlikely to occur in this portion. For this reason, deformation due to external force mainly occurs at a portion between the holding portion 35 and the bottom plate portion 34, and misalignment between components in the display portion 11 hardly occurs.

  In the comparative example, there is a possibility that breakage such as disconnection may occur by deforming the illumination board 15 so as to wave. Furthermore, there is a possibility that scratches, breakage, and deformation due to contact between the illumination substrate 15 and the end face of the light guide plate 14 may occur. When the positional relationship between the illumination substrate 15 and the light guide plate 14 is shifted due to deformation or the like, the image quality is deteriorated due to luminance unevenness or the like.

  According to this Embodiment, the display apparatus 10 which can be installed so that the rear surface of the display part 11 closely_contact | adheres to a wall surface can be provided. Furthermore, since the various substrates etc. which control the display panel 12 are arrange | positioned in the base part 20, the display part 11 can be made thin. As described above, it is possible to provide the display device 10 that can effectively use the space of the room without generating a dead space.

  According to the present embodiment, since the center of gravity is located in front of the display panel 12 by the first weight 51 and the fourth weight 54, it is possible to provide the display device 10 that is not easily toppled by an external force. According to the present embodiment, since the holding portion 35 that holds the illumination substrate 15 is provided separately from the bottom plate portion 34 that is fixed to the lower surface casing 21, the image quality is deteriorated due to distortion or breakage of the illumination substrate 15 due to external force. Therefore, it is possible to provide the display device 10 that is less likely to cause the problem.

  According to the present embodiment, since the frame body which is fixed in a state where the side housing 13 and the heat radiating plate 31 are in contact with each other is configured, the display panel 12 and the conductive plate are guided even when receiving external force. Thin members such as the optical plate 14 and the rear housing 16 can be prevented from being deformed or broken. Further, since the heat radiating plate 31 also serves as a structural member, the display device 10 can be configured with a small number of components.

  According to the present embodiment, since the holding portion 35 is provided separately from the bottom plate portion 34 that fixes the heat radiating plate 31 and the lower surface casing 21, the illumination substrate is undulated even when it receives an external force. Therefore, it is possible to provide the display device 10 that is less likely to be damaged by the above and a deterioration in image quality.

  According to the present embodiment, it is possible to provide the display device 10 that can efficiently dissipate the heat generated by the illumination board 15 and the driver 18. Thereby, damage, deterioration, malfunction, etc. of each component by heat can be prevented.

  According to the present embodiment, as described with reference to FIG. 2, the front surface of the base portion 20 has a rearward downward slope. Therefore, when the display device 10 is viewed from the front side, the presence of the base portion 20 is not conspicuous, and the display device 10 having a design that gives the impression that the display panel 12 and the wall are integrated can be provided.

  When the display device 10 is used as a television receiver, a television receiver having an antenna terminal for connecting a television broadcast antenna and a tuner circuit for receiving television broadcast radio waves is mounted on the input board 23. . A predetermined process is performed on the broadcast signal received by the television receiver, and the broadcast signal is separated into a video signal and an audio signal. An image is displayed on the display panel 12 based on the image signal. The audio signal is output from the speaker 22. Note that an antenna for receiving a television broadcast may be mounted on the input board 23 instead of the antenna terminal.

  In this way, by using the display device 10 as a television receiver, a television receiver including the heat sink 31 having the rear plate portion 32, the bottom plate portion 34, and the holding portion 35, and the illumination substrate 15 is provided. be able to. The rear plate portion 32 is disposed on the rear side of the display panel 12 that displays an image on the front surface. The bottom plate portion 34 protrudes from the edge of the rear plate portion 32 toward the display panel 12 side. The holding portion 35 protrudes from the rear plate portion 32 in the same direction as the bottom plate portion 34 so as to be shorter than the bottom plate portion 34. The illumination board 15 is held by the holding part 35 of the heat sink 31 and illuminates the rear side of the display panel 12.

  Since the holding portion 35 is provided separately from the bottom plate portion 34 that fixes the heat radiating plate 31 and the lower surface casing 21, even when an external force is applied, the lighting substrate 15 is damaged due to undulating deformation and the image quality is deteriorated. Thus, it is possible to provide a television receiver in which the occurrence of noise is difficult.

[Embodiment 2]
The present embodiment relates to the display device 10 in which the rear housing 16 does not have the lower plate portion 162. Note that description of portions common to the first embodiment is omitted.

  FIG. 18 is an enlarged longitudinal sectional view of the central portion of the display device 10 according to the second embodiment. In FIG. 18, components other than the heat radiating plate 31, the lower case 21, the rear case 16, the illumination board 15, and the light guide plate 14 are not shown.

  The rear housing 16 has a flat plate shape without the lower plate portion 162. The bottom plate portion 34 of the heat radiating plate 31 and the lower surface casing 21 of the base portion 20 are in direct contact. The rear housing 16 and the rear plate portion 32 are fixed with a double-sided tape or an adhesive. The rear housing 16 and the rear plate portion 32 may be fixed by screws or the like (not shown).

  The bottom plate portion 34 and the lower surface casing 21 may be fixed by, for example, friction stir welding, spot welding, rivets, or the like.

  According to the present embodiment, since the rear housing 16 is a flat plate, it can be easily stored and handled in the state of components. According to the present embodiment, since the bottom plate portion 34 and the lower surface casing 21 are in direct contact with each other, a joining technique such as friction stir welding or spot welding can be used.

[Embodiment 3]
The present embodiment relates to the display device 10 in which the heat radiating plate 31 and the rear housing 16 are integrated. Note that description of portions common to the first embodiment is omitted.

  FIG. 19 is a longitudinal sectional view of the central portion of the display device 10 according to the third embodiment. The rear plate portion 32 of the present embodiment also serves as an exterior member that covers the back surface of the display device 10.

  According to this embodiment, since the rear plate portion 32 of the heat radiating plate 31 is extended upward and used as the rear housing 16, the display device 10 having a small number of components and a high heat radiating effect can be provided.

[Embodiment 4]
The present embodiment relates to the display device 10 having a thin portion 38 in which a part of the rear plate portion 32 is thinned between the holding portion 35 and the bottom plate portion 34 of the heat radiating plate 31. Note that description of portions common to the first embodiment is omitted.

  FIG. 20 is an enlarged vertical cross-sectional view of the central portion of the display device 10 according to the fourth embodiment. In FIG. 20, components other than the heat radiating plate 31, the lower case 21, the rear case 16, the illumination board 15, and the light guide plate 14 are not shown.

  Between the holding part 35 and the bottom plate part 34 of the rear plate part 32, a thin part 38 in which a part of the rear plate part 32 is thinned is provided. When an external force in the front-rear direction is applied to the display part 11, the rear plate part 32 is elastically deformed in the vicinity of the thin part 38. The light guide plate 14 and the illumination board 15 are integrally tilted in the front-rear direction, but the mutual positional relationship does not change.

  When no external force is applied, the shape of the rear plate portion 32 returns to the original state. Since the positional relationship between the light guide plate 14 and the illumination substrate 15 does not change, the external force applied to the display unit 11 can prevent damage due to a change in the positional relationship between the light guide plate 14 and the illumination substrate 15 and collision between the two. Can do.

  According to the present embodiment, the presence of the thin wall portion 38 can prevent a positional shift or the like between the light guide plate 14 and the illumination base 15. Furthermore, since the heat sink 31 can be reduced in weight, the lightweight display device 10 can be provided.

The technical features (components) described in each embodiment can be combined with each other, and new technical features can be formed by combining them.
The embodiments disclosed herein are illustrative in all respects and should not be considered as restrictive. The scope of the present invention is defined not by the above-described meaning but by the scope of the claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.

As described above, the display device 10 according to the present invention protrudes toward the display panel 12 from the rear plate portion 32 disposed on the rear side of the display panel 12 that displays an image on the front surface and the edge of the rear plate portion 32. A heat sink 31 having a bottom plate 34, a holding plate 35 projecting from the rear plate 32 in the same direction as the bottom plate 34 shorter than the bottom plate 34, and the holding portion 35 of the heat sink 31. The illumination unit 15 that is held and illuminates the rear side of the display panel 12, the rectangular plate-like display unit 11 having the display panel 12, and the bottom plate unit 34 are accommodated, and the display is displayed from one side of the display unit 11. A panel-like base portion 20 that protrudes toward the display surface of the panel 12 and forms an L-shape together with the display portion 11 is provided.

In the present invention, since the holding portion 35 that holds the illumination portion 15 is provided separately from the bottom plate portion 34 that is fixed to the lower surface casing 21, the image quality is deteriorated due to distortion or breakage of the illumination portion 15 due to external force. Therefore, it is possible to provide the display device 10 that is less likely to cause the problem. According to the present invention, an L-shaped display device 10 that can effectively use the space of a room without generating a dead space by providing the rear side along a wall surface or the like is provided. It is possible.

  In the display device 10 according to the present invention, the rear plate portion 32 has a thick portion 37 that is thicker than other portions on the side opposite to the bottom plate portion 34 of the base end portion of the holding portion 35.

  In the present invention, the portion in contact with the upper side of the holding portion 35 has the thick portion 37 that is thicker than the other portions, so that deformation is unlikely to occur in this portion. For this reason, deformation due to external force mainly occurs at a portion between the holding portion 35 and the bottom plate portion 34, and misalignment between components in the display portion 11 hardly occurs.

  In the display device 10 according to the present invention, the rear plate portion 32 includes a thin portion 38 that is thinner than other portions between the holding portion 35 and the bottom plate portion 34.

  In the present invention, the presence of the thin-walled portion 38 can prevent misalignment between the light guide plate 14 and the illumination base 15. Furthermore, since the heat sink 31 can be reduced in weight, the lightweight display device 10 can be provided.

  The display device 10 according to the present invention includes a light guide plate 14 disposed on the rear surface of the display panel 12 and having one end surface facing the illumination unit 15.

  In the present invention, it is possible to provide the display device 10 having an edge light type backlight.

  A television receiver according to the present invention includes the display device 10 according to any one of the above and a receiving unit that receives a television broadcast, and based on the television broadcast received by the receiving unit, An image is displayed on the display device 10.

  In the present invention, it is possible to provide a television apparatus that is less likely to cause image quality degradation due to distortion and breakage of the illumination unit 15 due to external force.

DESCRIPTION OF SYMBOLS 10 Display apparatus 11 Display part 12 Display panel 13 Side surface housing 131 Front side edge 132 Rear side edge 14 Light guide plate 15 Illumination board (illumination part)
16 Rear housing 161 Back plate portion 162 Lower plate portion 17 Driver substrate 18 Driver 19 Driver control substrate 20 Base portion 21 Lower surface housing 211 Bottom portion 212 Edge portion 22 Speaker 23 Input substrate 24 Control substrate 25 Cosmetic plate 26 Upper surface housing 261 Box Shaped part 262 Outer edge part 27 Reinforcement body 271 First plate part 272 Second plate part 273 Third plate part 31 Heat sink 32 Rear plate part 33 Side plate part 34 Bottom plate part 35 Holding part 37 Thick part 38 Thin part 41 First substrate Base 42 Substrate holding part 43 Stair board part 46 Second board stand 47 Main board placing part 48 Speaker placing part 49 Heat transfer part 51 First weight 54 Fourth weight 61 First screw 62 Second screw 63 Third screw 64 Fourth screw 71 First hole 72 Second hole 73 Third hole 74 Fourth hole 75 Fifth hole

Claims (5)

A rear plate portion disposed on the rear side of the display panel displaying an image on the front surface, a bottom plate portion protruding from the edge of the rear plate portion toward the display panel side, and the rear plate portion in the same direction as the bottom plate portion A heat dissipation plate having a holding portion that protrudes shorter than the bottom plate portion;
An illuminating unit that is held by the holding unit of the heat sink and illuminates the rear side of the display panel ;
A rectangular plate-like display unit having the display panel;
A display device comprising: the bottom plate portion; and a plate-like base portion that protrudes from one side of the display portion toward the display surface of the display panel and forms an L shape with the display portion .   The display device according to claim 1, wherein the rear plate portion has a thicker portion thicker than other portions on a side opposite to the bottom plate portion of the base end portion of the holding portion.   The display device according to claim 1, wherein the rear plate portion includes a thin-walled portion thinner than other portions between the holding portion and the bottom plate portion.   4. The display device according to claim 1, further comprising a light guide plate disposed on a rear surface of the display panel and having one end surface facing the illumination unit. 5. A display device according to any one of claims 1 to 4 ,
A receiver for receiving television broadcasts,
A television receiver, wherein an image is displayed on the display device based on the television broadcast received by the receiving unit.

Images