JP2012043614A - Lighting system, display device, and television receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting system capable of carrying out easily installation work of a board cover.SOLUTION: The lighting system is provided with a cold-cathode tube 17, a chassis 14 in which the cold-cathode tube 17 is housed and a control board 40 is installed, and a board cover 60 which is installed in the chassis 14 and arranged so as to cover the control board 40. The board cover 60 has a guide member 70 and the chassis 14 has a guide groove 52 to guide the guide member 70, thereby, the board cover 60 can be guided to a prescribed installation position in the chassis 14.

Description

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

  Conventionally, a liquid crystal panel used for a liquid crystal display device such as a liquid crystal television does not emit light, and thus has a backlight device as a separate illumination device. Such a backlight device is well known to be installed on the back side (the side opposite to the display surface) of the liquid crystal panel. The backlight device has a chassis that is open on the liquid crystal panel side, and an inner surface side of the bottom plate in the chassis. A plurality of light sources to be installed (for example, cold cathode fluorescent lamps and LEDs), an optical member (such as a diffusion plate) that is disposed in the opening of the chassis and efficiently emits light emitted from the light sources to the liquid crystal panel side; A light reflection sheet is provided in the chassis and reflects light from the light source toward the optical member and the liquid crystal panel.

  In addition, a circuit board for driving a liquid crystal display device is attached to the chassis, and a chassis is known in which a board cover is attached to cover the circuit board. Such a board cover and a circuit board are attached to the chassis by attachment means such as screws. In addition, what was described in following patent document 1 is known as an example of the liquid crystal display device of the structure which fixes a circuit board with a screw | thread with respect to a chassis.

Japanese Patent Laid-Open No. 2007-180751

  When attaching the board cover as described above to the chassis, it is necessary to place the board cover at a predetermined attachment position. Conventionally, such alignment of the substrate cover to the mounting position has been performed manually by an operator, and there is room for improvement in workability.

  The present invention has been completed based on the above circumstances, and an object of the present invention is to provide an illuminating device capable of easily performing a mounting operation of a substrate cover. Moreover, it aims at providing the display apparatus provided with such an illuminating device, and a television receiver.

  In order to solve the above-described problems, a lighting device according to the present invention is arranged in such a manner that a light source, a chassis in which the light source is accommodated and a circuit board is attached, and a chassis that is attached to the chassis and covers the circuit board. A substrate cover, and one of the substrate cover and the chassis includes a guide piece, and the other includes a guide groove for guiding the guide piece, whereby the substrate cover is attached to the chassis in a predetermined manner. It is characterized in that it can be guided to a position.

  By guiding the guide piece in the guide groove, the substrate cover can be guided with respect to the chassis. As described above, the guide piece is guided by the guide groove portion, whereby the positioning of the substrate cover with respect to the chassis is facilitated, and the workability related to the attachment of the substrate cover is improved. Further, the board cover can be reliably set at the mounting position in the chassis, and the circuit board can be reliably covered with the board cover.

  In the above configuration, a protrusion is formed in one of the guide groove and the guide piece, and a protrusion insertion hole through which the protrusion is inserted is formed in the other, and the protrusion insertion hole is formed in the protrusion insertion hole. By inserting the protrusion, the substrate cover can be positioned at the mounting position in the guide direction of the guide piece with respect to the guide groove.

  The board cover is positioned at a predetermined mounting position by inserting the protrusion into the protrusion insertion hole. For this reason, a board | substrate cover can be distribute | arranged to a predetermined attachment position more reliably.

  Further, the protrusion may be formed by bending a part of the guide groove or a part of the guide piece toward the protrusion insertion hole. With such a configuration, the protrusion can be easily formed.

  Further, a chassis side marker is formed in a peripheral part of the board cover in the chassis, a cover side marker is formed on the board cover, and the chassis is disposed in the mounting position in the chassis. The side marker and the cover side marker may be arranged at the same position in the guide direction of the guide piece with respect to the guide groove.

  By arranging the chassis side marker and the cover side marker at the same position in the guide direction, it can be confirmed that the board cover is arranged at the mounting position of the chassis. Thereby, a board | substrate cover can be more reliably attached to the attachment position of a chassis.

  Further, a guide piece side marker is formed on a surface of the guide piece facing the guide groove portion, and in a state where the substrate cover is arranged at the attachment position, the guide piece side marker overlaps with the guide piece side marker. May be formed with a marker viewing hole that allows the guide piece side marker to be seen from the opposite side of the guide piece.

  In a state where the substrate cover is arranged at the mounting position, the guide one-side marker and the marker visual recognition hole overlap each other. In other words, by visually recognizing the guide one-side marker through the marker visual recognition hole, it can be confirmed that the substrate cover is arranged at the attachment position, and the substrate cover can be reliably attached to the attachment position of the chassis.

  Further, the shape of the marker visual recognition hole may be similar to the shape of the guide one side marker.

  Depending on the specifications of the lighting device, etc., one type of substrate cover may be selected from several types of substrate covers and attached to the chassis. In such a case, there is a concern that an incorrect type of board cover may be assembled to the chassis. In the present invention, a marker viewing hole and a guide one-side marker having a similar shape may be formed in a correct combination of chassis and board cover, respectively. With such a configuration, it is possible to easily confirm that the chassis and the board cover are in the correct combination by confirming that the shape of the marker visual recognition hole and the guide one side marker match. Incorrect assembly of the substrate cover can be suppressed.

  Further, the guide groove portion is configured, and a pair of wall portions are arranged so as to be opposed to each other so as to sandwich the guide piece, and the guide piece has a shape that tapers toward the tip side, The pair of wall portions are formed in such a shape that an interval between the walls becomes smaller toward the tip end side, and the guide piece is moved relative to the guide groove portion when the guide piece is moved relative to the tip end side. The substrate cover can be positioned at the mounting position in the guide direction of the guide piece with respect to the guide groove by contacting each of the pair of wall portions.

  The substrate cover can be positioned at the mounting position by the guide pieces coming into contact with both side walls. For this reason, a board | substrate cover can be distribute | arranged to an attachment position more reliably.

  Moreover, the said circuit board shall be provided with the said guide piece or the said guide groove part. With such a configuration, the board cover can be guided with respect to the circuit board.

  Next, in order to solve the above-described problem, the illumination device and a display panel that performs display using light from the illumination device are provided. According to such a display device, since the cost can be reduced in the lighting device, the cost can also be reduced in the display device.

  The display panel can be exemplified by 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.

  ADVANTAGE OF THE INVENTION According to this invention, the illuminating device which can perform the attachment operation | work of a board | substrate cover easily can be provided. In addition, it is possible to provide a display device and a television receiver including such a lighting device.

The disassembled perspective view which shows schematic structure of the television receiver which concerns on Embodiment 1 of this invention. The disassembled perspective view which shows schematic structure of the liquid crystal display device with which the television receiver of FIG. 1 is provided. Sectional drawing which shows the cross-sectional structure along the long side direction of a liquid crystal display device. The top view which shows the back surface of the backlight apparatus with which the liquid crystal display device of FIG. 2 is provided. The enlarged view which shows the state which attached the board | substrate cover in FIG. The perspective view which shows a guide piece and a guide groove part. The top view which shows a guide piece and a guide groove part. Sectional drawing which shows the process in which a guide piece is penetrated to a guide groove part. Sectional drawing which shows the attachment structure of a board | substrate cover and a control board (The figure cut | disconnected by the AA line of FIG. 5). Sectional drawing which shows the attachment structure of a board | substrate cover and a control board (figure cut | disconnected by the BB line of FIG. 5). The perspective view which shows the guide piece and guide groove part which concern on Embodiment 2 of this invention. The top view which shows the guide piece and guide groove part which concern on Embodiment 2 of this invention. The perspective view which shows the guide piece and guide groove part which concern on Embodiment 3 of this invention. The top view which shows the guide piece and guide groove part which concern on Embodiment 3 of this invention. Sectional drawing which shows the guide piece and guide groove part which concern on Embodiment 4 of this invention. The top view which shows the guide piece and guide groove part which concern on Embodiment 5 of this invention. The top view which shows the guide piece and guide groove part which concern on Embodiment 6 of this invention. The top view which shows the guide piece and guide groove part which concern on Embodiment 7 of this invention. The top view which shows the guide piece and guide groove part which concern on Embodiment 8 of this invention. Sectional drawing which shows the guide piece and guide groove part which concern on Embodiment 8 of this invention.

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. First, the configuration of the television receiver TV including the liquid crystal display device 10 will be described. 1 is an exploded perspective view showing a schematic configuration of the television receiver of the present embodiment, FIG. 2 is an exploded perspective view showing a schematic configuration of a liquid crystal display device included in the television receiver of FIG. 1, and FIG. It is sectional drawing which shows the cross-sectional structure along the long side direction of an apparatus. The long side direction of the liquid crystal display device 10 (and the chassis 14) is the X-axis direction, and the short side direction is the Y-axis direction. Also, the vertical direction in FIG. 3 is the Z-axis direction (front and back direction), the upper direction in FIG. 3 is the front side, and the lower direction is the back side.

  As shown in FIG. 1, the television receiver TV according to the present embodiment includes a liquid crystal display device 10, front and back cabinets Ca and Cb that are accommodated so as to sandwich the liquid crystal display device 10, a power supply substrate P, and a tuner T. And a stand S. The liquid crystal display device 10 (display device) has a horizontally long rectangular shape as a whole, and is accommodated in a vertically placed state (a state in which the short side direction is arranged along the vertical direction). As shown in FIG. 2, the liquid crystal display device 10 includes a liquid crystal panel 11 (display panel) and a backlight device 12 (illumination device) as an external light source, which are integrated by a frame-like bezel 13 or the like. Is supposed to be retained.

  Next, the liquid crystal panel 11 and the backlight device 12 constituting the liquid crystal display device 10 will be described. The liquid crystal panel 11 is configured such that a pair of glass substrates are bonded together with a predetermined gap therebetween, and liquid crystal is sealed between the glass substrates. One glass substrate is provided with a switching element (for example, TFT) connected to a source wiring and a gate wiring orthogonal to each other, a pixel electrode connected to the switching element, an alignment film, and the like. The substrate is provided with a color filter and counter electrodes in which colored portions such as R (red), G (green), and B (blue) are arranged in a predetermined arrangement, and an alignment film. Note that polarizing plates 11a and 11b are attached to the outside of both substrates (see FIG. 3).

  As shown in FIG. 2, the backlight device 12 is attached so as to cover a substantially box-shaped chassis 14 having an opening 14 b on the light emitting surface side (liquid crystal panel 11 side), and the opening 14 b of the chassis 14. Diffusion plate 15a, a plurality of optical sheets 15b arranged between the diffusion plate 15a and the liquid crystal panel 11, and a long side edge of the diffusion plate 15a arranged along the long side of the chassis 14 with the chassis 14 And a frame 16 that is held between them.

  Further, in the chassis 14, a cold cathode tube 17 (light source), a lamp clip 18 for attaching the cold cathode tube 17 to the chassis 14, and a relay for relaying electrical connection at each end of the cold cathode tube 17. A connector 19 and a holder 20 that collectively covers the end of the cold cathode tube 17 group and the relay connector 19 group are accommodated. In the backlight device 12, the diffusion plate 15 a side is a light emission side from the cold cathode tube 17.

  The chassis 14 is made of a metal plate-like member formed by sheet metal, and has a rectangular flat plate-like bottom plate 14a and an outer edge portion 21 (short side in the short side direction) that rises from each side and is folded back into a substantially U shape. It has a substantially box shape including an outer edge portion 21a and a long side outer edge portion 21b) in the long side direction. In the bottom plate 14a of the chassis 14, a plurality of attachment holes 22 for attaching the relay connector 19 are formed through both ends of the long side direction. Furthermore, a fixing hole (not shown) is formed through the upper surface of the long-side outer edge portion 21b of the chassis 14 so that the bezel 13, the frame 16, the chassis 14 and the like can be integrated with, for example, screws. It is said that. The material of the chassis 14 is not limited to metal and can be changed as appropriate.

  As shown in FIG. 2 or 8, a light reflecting sheet 23 is disposed on the inner surface side (the surface side facing the cold cathode tube 17) of the bottom plate 14 a of the chassis 14. The light reflecting sheet 23 is made of synthetic resin, and the surface thereof is white with excellent reflectivity, and is laid so as to cover almost the entire region along the inner surface of the bottom plate 14a of the chassis 14 (FIG. 3). (The light reflection sheet is not shown). With this light reflecting sheet 23, it is possible to reflect the light emitted from the cold cathode tube 17 toward the diffusion plate 15a.

  On the other hand, a diffusion plate 15a and an optical sheet 15b are disposed on the opening 14b side of the chassis 14. The diffusion plate 15a is formed by dispersing and mixing light scattering particles in a plate member made of synthetic resin, and has a function of diffusing linear light emitted from the cold cathode tube 17 serving as a linear light source. As described above, the short side edge portion of the diffusion plate 15a is placed on the first surface 20a of the holder 20, and is not subjected to vertical restraining force. On the other hand, the long side edge of the diffusion plate 15 a is fixed by being sandwiched between the chassis 14 and the frame 16.

  The optical sheet 15b disposed on the diffusion plate 15a is a laminate of a diffusion sheet, a lens sheet, and a reflective polarizing plate in order from the diffusion plate 15a side. The optical sheet 15b is emitted from the cold cathode tube 17 and passes through the diffusion plate 15a. It has a function of converting the light that has passed through into planar light. The liquid crystal panel 11 is installed on the upper surface side of the optical sheet 15 b, and the optical sheet 15 b is sandwiched between the diffusion plate 15 a and the liquid crystal panel 11.

  The cold-cathode tube 17 has a long and narrow tubular shape, and a large number (20 in this embodiment) are parallel to each other in a state in which the length direction (axial direction) thereof coincides with the long side direction of the chassis 14. They are housed in the chassis 14 in a line-up state (see FIG. 2). Each end of the cold cathode tubes 17 is provided with a terminal (not shown) for receiving driving power, the end is fitted into the relay connector 19, and a holder 20 is attached so as to cover the relay connector 19. It has been.

  The holder 20 that covers the end of the cold cathode tube 17 is made of a synthetic resin that exhibits white color, and has a long and narrow box shape that extends along the short side direction of the chassis 14. The holder 20 is arranged so as to partially overlap the short side outer edge portion 21a of the chassis 14, and constitutes the side wall of the backlight device 12 together with the short side outer edge portion 21a. As shown in FIG. 3, the insertion pin 24 protrudes from the surface of the holder 20 that faces the short side outer edge portion 21 a of the chassis 14, and the insertion pin 24 is formed on the upper surface of the short side outer edge portion 21 a of the chassis 14. The holder 20 is attached to the chassis 14 by being inserted into the inserted insertion hole 25.

  As shown in FIG. 3, the stepped surface of the holder 20 consists of three surfaces parallel to the bottom plate 14a of the chassis 14, and the short side edge of the diffusion plate 15a is placed on the first surface 20a at the lowest position. Has been. Furthermore, an inclined cover 26 that extends toward the bottom plate 14a of the chassis 14 extends from the first surface 20a. The short side edge portion of the liquid crystal panel 11 is placed on the second surface 20 b of the stepped surface of the holder 20. The third surface 20 c at the highest position among the stepped surfaces of the holder 20 is disposed at a position overlapping the short side outer edge portion 21 a of the chassis 14 and is in contact with the bezel 13.

  As shown in FIGS. 2 and 4, the inverter board 30 and the control board 40 are attached to the outer surface side (the opposite side to the cold cathode tube 17, the rear surface side) of the bottom plate 14 a (chassis wall portion) of the chassis 14. (Attached). In other words, it can also be said that the inverter board 30 and the control board 40 constitute a part of the chassis 14. The above-described power supply board P (see FIG. 1, not shown in FIG. 4) is electrically connected to the inverter board 30, the control board 40, and the like, and serves as a power supply source that supplies power thereto.

  The inverter board 30 is provided at both ends of the long side direction of the chassis 14 and has a long rectangular shape along the short side direction of the chassis 14. Each inverter board 30 is electrically connected to the cold cathode tube 17 via a connector 27 and a harness 28. Further, the inverter board 30 boosts the input voltage input from the power supply board P by an inverter circuit constituted by a transformer or the like, and outputs an output voltage higher than the input voltage to the cold cathode tube 17. 17 has a function of controlling turning on (or turning off).

  As shown in FIG. 4, the control board 40 (circuit board) has a rectangular shape, and is centered in the long side direction of the chassis 14 and is biased to one side in the short side direction of the chassis 14 (FIG. 4). (Upper side). The control board 40 has a circuit component 41 mounted on a board made of synthetic resin (for example, made of paper phenol or glass epoxy resin), and receives various input signals such as TV signals from the tuner T as signals for driving the liquid crystal. And a function of supplying the converted liquid crystal driving signal to the liquid crystal panel 11.

  As shown in FIGS. 2 and 5, a board cover 60 is attached to the bottom plate 14 a of the chassis 14 so as to cover the control board 40. FIG. 4 illustrates the chassis 14 with the substrate cover 60 removed. Such a substrate cover 60 is intended to protect the control substrate 40. The substrate cover 60 has a function of preventing a hand from touching the control board 40 and increases the safety when the control board 40 becomes hot when the control board 40 is driven.

  As shown in FIGS. 5 and 10, the substrate cover 60 is a plate-like member that has a square shape in plan view, and a central portion 61 that has a substantially U shape in sectional view and opens toward the chassis 14 side. And end portions 62 respectively extending along the bottom plate 14a from both ends (left and right ends in FIG. 5) in the long side direction of the chassis 14 of the central portion 61. The board cover 60 is attached to the chassis 14 in such a manner that both ends 62 of the board cover 60 overlap with the left and right peripheral edges of the control board 40 in FIG.

  Next, a structure for attaching the control board 40 and the board cover 60 to the chassis 14 will be described. As shown in FIG. 4, a mounting base portion 50 is formed at the mounting location of the control board 40 on the bottom plate 14 a of the chassis 14. The mounting base portion 50 is formed by protruding a part of the bottom plate 14a toward the outer surface of the chassis 14, and has a long shape in the Y-axis direction. The mounting pedestal 50 is formed at a location overlapping the both ends 62 of the substrate cover 60, and the control board 40 and the substrate cover 60 are arranged so as to straddle both the mounting pedestals 50.

  As shown in FIG. 6, guide pieces 70 that protrude toward the bottom plate 14 a of the chassis 14 are formed at both ends 62 of the substrate cover 60. 6 and 7 are views showing a state in which the bottom plate 14a of the chassis 14 is viewed from the front side (inside the chassis). The guide piece 70 is formed by punching a part of the end portion 62 toward the mounting base portion 50, and has a plate shape. As shown in FIG. 8, the guide piece 70 has a base end portion 71 extending from the substrate cover 60 and a front end portion 72 extending from the base end portion 71. The distal end portion 72 is formed so as to extend along the direction of the plate surface of the bottom plate 14a (or the surface facing the control board 20 in the mounting base portion 50).

  The distal end portion 72 has a rectangular shape that is long in the Y-axis direction in plan view. As shown in FIGS. 6 and 7, a chassis opening 51 is formed in the mounting base 50 of the chassis 14 at a location facing the distal end portion 72 by penetrating the mounting base 50.

  The chassis opening 51 has a square shape that is slightly larger than the distal end portion 72 in plan view, and the guide piece 70 can be inserted therethrough. In the control board 40, a board opening 42 having substantially the same shape as the chassis opening 51 is formed at a position overlapping the chassis opening 51. Thereby, the guide piece 70 is configured to be able to be inserted into the board opening 42 and the chassis opening 51 from the outside of the chassis 14.

  In the mounting base portion 50 of the chassis 14, a guide groove portion 52 is formed at a location facing the tip portion 72. The guide groove portion 52 is formed by denting a part of the mounting base portion 50 to the side opposite to the substrate cover 60, and overlaps with a portion of the chassis opening 51 in the Y-axis direction in plan view. It is arranged.

  More specifically, the guide groove portions 52 are formed along the Y-axis direction, and are erected from the edge portions on both sides in the X-axis direction of the chassis opening portion 51 toward the side opposite to the board cover 60. The pair of groove side walls 52A and a groove bottom wall 52B formed so as to connect both the groove side walls 52A. Further, the groove bottom wall 52 </ b> B extends in parallel with the distal end portion 72 of the guide piece 70.

  The guide groove portion 52 can be fitted with the distal end portion 72 of the guide piece 70. When the distal end portion 72 of the guide piece 70 is fitted into the guide groove portion 52, both groove portion side walls 52 </ b> A sandwich the distal end portion 72. And is configured to restrict the movement of the tip 72 in the X-axis direction. That is, the guide groove 52 is configured to be able to guide the guide piece 70 in the Y-axis direction. In the state in which the substrate cover 60 is disposed at a predetermined mounting position, as shown in FIG. 6, the distal end portion of the distal end portion 72 of the guide piece 70 is the edge of the chassis opening 51 (inside the chassis 14). And are superposed.

  As shown in FIG. 10, the guide groove 52 has a configuration in which the groove width (in other words, the interval between the two groove side walls 52 </ b> A) increases toward the back side (upper side in FIG. 10). The tip portion 72 of the piece 70 is easily fitted into the guide groove portion 52.

  From the above configuration, as shown in FIG. 8, each guide piece 70 is inserted into the board opening 42 and the chassis opening 51 and is fitted in the corresponding guide groove 52, and then each guide groove 52. While the guide pieces 70 are guided, the guide pieces 70 are slid (moved along the XY plane) to one end side (left side in FIG. 8) in the guide direction, whereby the substrate cover 60 is fixedly attached (see FIG. It is possible to guide to the position of the substrate cover 60 shown in FIG.

  In the present embodiment, the position where the substrate cover 60 overlaps the entire surface of the control substrate 40 is set as the mounting position of the substrate cover 60. The mounting position of the substrate cover 60 can be changed as appropriate, and may be any position as long as the substrate cover 60 is disposed so as to cover the control substrate 40.

  Further, as shown in FIG. 9, screw insertion holes 63 are formed at the four corners of the substrate cover 60 in plan view. The screw insertion hole 63 overlaps with the screw insertion hole 43 formed in the control board 40 and the screw attachment hole 53 formed in the attachment base portion 50 when the substrate cover 60 is moved to a predetermined attachment position. It has become. A screw is cut on the inner peripheral surface of the screw mounting hole 53, and the tip of the screw B1 can be screwed together.

  Thereby, the screw B1 is inserted into the screw insertion holes 63 and 43 from the back side (upper side in FIG. 9), and the tip of the screw B1 is screwed into the screw mounting hole 53, so that the control board 40 and the board cover 60 are connected to the chassis. It is the structure which can be attached with respect to the 14 attachment base parts 50. FIG.

  As shown in FIGS. 6 and 9, a guide piece side marker 73 is formed on a surface 72A of the guide piece 70 facing the guide groove portion 52 (groove bottom wall 52B). The guide one-side marker 73 has, for example, a circular shape and is formed by printing a paint. As a means for forming the guide piece side marker 73, in addition to printing, a means for marking the guide groove portion 52 with a laser marker, a means for marking the guide piece 70 by recessing in the shape of the guide piece side marker 73, and the like. Can be illustrated.

  In addition, in the state where the substrate cover 60 is disposed at the attachment position, a marker visual recognition hole 54 is formed through the portion overlapping the guide one side marker 73 on the groove bottom wall 52B of the guide groove 52. Thereby, the guide piece side marker 73 can be visually recognized from the opposite side to the guide piece 70 through the marker visual recognition hole 54, and it can be confirmed easily that the board | substrate cover 60 is distribute | arranged to the attachment position. The marker visual recognition hole 54 has a similar shape to the guide one-side marker 73 (circular shape in the present embodiment).

As shown in FIG. 5, a chassis-side marker 55 is formed on the periphery of the substrate cover 60 on the bottom plate 14 a of the chassis 14. On the other hand, of the both ends 62 of the substrate cover 60,
A cover side marker 64 is formed at one end 62 (the end 62 on the side adjacent to the chassis side marker 55). In a state where the substrate cover 60 is disposed at the attachment position, the chassis side marker 55 and the cover side marker 64 are disposed at the same position in the Y-axis direction (the guide direction of the guide piece 70 with respect to the guide groove portion 52). It has become.

  The chassis side marker 55 and the cover side marker 64 have, for example, a shape that is longer in the X-axis direction, and are formed by printing a paint. Examples of the means for forming the chassis-side marker 55 and the cover-side marker 64 include not only printing but also means for marking with a laser marker, or means for marking by recessing the substrate cover 60 or the chassis 14. .

  Next, a procedure for attaching the substrate cover 60 to the chassis 14 in the backlight device 12 of the present embodiment will be described. First, as shown in FIG. 8, with the control board 40 set on the outer surface side of the bottom plate 14 a of the chassis 14, the guide piece 70 of the board cover 60, the board opening 42 of the control board 40, and the chassis opening of the chassis 14. Insert into the part 51. Then, the distal end of the distal end portion 72 of the guide piece 70 is fitted into the guide groove portion 52.

  Next, the substrate cover 60 is moved to the distal end side of the distal end portion 72 while sliding the distal end portion 72 of the guide piece 70 in the guide groove portion 52 and moved to a predetermined mounting position (state of FIG. 9). Thereby, the substrate cover 60 is disposed so as to cover the control substrate 40 from the outside of the chassis 14. Further, as shown in FIG. 9, the guide piece side marker 73 is visible from the front side through the marker visual recognition hole 54 by being superimposed on the marker visual recognition hole 54. Further, in a state where the substrate cover 60 is arranged at a predetermined attachment position, the screw insertion hole 63, the screw insertion hole 43, and the screw attachment hole 53 are arranged in an overlapping manner.

  Next, the screw B1 is inserted into the screw insertion holes 63 and 43, and the tip of the screw B1 is screwed into the screw mounting hole 53, whereby the attachment of the control board 40 and the board cover 60 to the chassis 14 is completed. .

  8 and 9, the guide piece side marker 73 is given a certain thickness in order to illustrate the guide piece side marker 73, and the guide piece side marker 73 interferes with the guide groove portion 52 in the drawings. Looks like. However, the guide piece side marker 73 is actually thinner than the guide piece 70 and the like, and does not interfere with the guide groove portion 52.

  As described above, the backlight device 12 of the present embodiment includes the cold cathode tube 17, the chassis 14 in which the cold cathode tube 17 is accommodated and the control board 40 is attached, the chassis 14 and the control board 40. 40, the board cover 60 is provided with a guide piece 70, and the chassis 14 is provided with a guide groove 52 for guiding the guide piece 70. It is a configuration that can guide to a predetermined mounting position.

  When the guide piece 70 is guided by the guide groove portion 52, the substrate cover 60 is guided with respect to the chassis 14, and more specifically, the substrate cover 60 is moved in the Y-axis direction while being positioned in the X-axis direction. be able to. With such a configuration, the guide piece 70 is guided by the guide groove portion 52, whereby the positioning of the substrate cover 60 with respect to the chassis 14 is facilitated, and the workability related to the attachment of the substrate cover 60 is improved. Further, the board cover 60 can be reliably set at the mounting position in the chassis 14, and the control board 40 can be reliably covered with the board cover 60.

  In the above configuration, the guide piece side marker 73 is formed on the surface of the guide piece 70 facing the guide groove portion 52, and overlaps with the guide piece side marker 73 in the guide groove portion 52 in a state where the substrate cover 60 is disposed at the mounting position. A marker visual recognition hole 54 that allows the guide piece side marker 73 to be seen from the opposite side of the guide piece 70 is formed through the portion.

  In the state where the substrate cover 60 is disposed at the mounting position, the guide one-side marker 73 and the marker visual recognition hole 54 overlap each other. In other words, by visually recognizing the guide one-side marker 73 through the marker visual recognition hole 54, it can be confirmed that the board cover 60 is disposed at the attachment position, and the board cover 60 can be reliably attached to the attachment position of the chassis. .

  Further, the shape of the marker visual recognition hole 54 is similar to the shape of the guide one side marker 73.

  Depending on differences in the specifications of the backlight device 12, one type of substrate cover may be selected from several types of substrate covers and attached to the chassis 14. In such a case, there is a concern that an incorrect type of board cover may be assembled to the chassis 14. In the present embodiment, the marker viewing hole 54 and the guide one side marker 73 having a similar shape (for example, a circular shape) may be formed in the chassis 14 and the substrate cover 60 in the correct combination. With such a configuration, it is easily confirmed that the chassis 14 and the board cover 60 are in the correct combination by confirming that the shape of the marker visual recognition hole 54 and the guide one-side marker 73 are matched. It is possible to suppress erroneous assembly of the substrate cover.

  Further, in the chassis 14, the chassis side marker 55 is formed in the peripheral portion of the substrate cover 60, the cover side marker 64 is formed on the substrate cover 60, and the substrate cover 60 is disposed at the mounting position. In the guide direction of the guide piece 70 with respect to the guide groove 52, the chassis side marker 55 and the cover side marker 64 are arranged at the same position.

  By arranging the chassis side marker 55 and the cover side marker 64 at the same position in the guide direction, it can be confirmed that the board cover 60 is arranged at the mounting position of the chassis 14. Thereby, the board | substrate cover 60 can be more reliably attached to the attachment position of the chassis 14. FIG.

<Embodiment 2>
Next, a second embodiment of the present invention will be described with reference to FIGS. In the backlight device 112 of the present embodiment, the configuration of the guide piece and the guide groove is different from that of the above embodiment. Note that the same portions as those in the above embodiment are denoted by the same reference numerals and redundant description is omitted.

  11 and 12 are views showing a state in which the bottom plate 14a of the chassis 14 is viewed from the front side. As shown in FIG. 11, a protrusion 173 is formed on the guide piece 170 of the present embodiment, and the protrusion is inserted into a protrusion insertion hole 154 formed in the guide groove 152. The protrusion 173 has a plate shape formed by bending a part of the distal end side of the distal end portion 72 of the guide piece 170 toward the protrusion insertion hole 154. The protrusion 173 is bent at a right angle to the tip 72.

  The protrusion insertion hole 154 is formed by cutting out the groove bottom wall 52B of the guide groove 152, and is formed in a shape opening to the opposite side (lower side in FIG. 12) of the guide piece 170. The protrusion 173 can be inserted into (inserted into) the protrusion insertion hole 154 from the side opposite to the distal end side of the guide piece 170. In a state where the substrate cover 60 is disposed at a predetermined mounting position, the protrusion 173 is configured to abut on the inner peripheral surface 154A on the distal end side of the guide piece 170 in the protrusion insertion hole 154.

  In this way, the protrusion 173 is inserted into the protrusion insertion hole 154 and abuts against the inner peripheral surface 154A, so that the Y-axis direction (the guide direction of the guide piece 170 with respect to the guide groove 152) is one direction (with respect to the guide groove 152). In the sliding direction of the guide piece 170 (upper side in FIG. 12), the movement of the substrate cover 60 is restricted. As a result, the substrate cover 60 is positioned at the mounting position. For this reason, the substrate cover 60 can be more reliably disposed at a predetermined mounting position.

  The protrusion 173 is formed by bending a part of the guide piece 170 toward the protrusion insertion hole 154. With such a configuration, the protrusion 173 can be easily formed.

<Embodiment 3>
Next, a third embodiment of the present invention will be described with reference to FIGS. In the backlight device 212 of the present embodiment, the configuration of the guide pieces and the guide groove portions is different from that of the above-described embodiments. In addition, the same code | symbol is attached | subjected to the same part as said each embodiment, and the overlapping description is abbreviate | omitted.

  13 and 14 are views showing a state in which the bottom plate 14a of the chassis 14 is viewed from the front side. As shown in FIG. 13, a protrusion 273 is formed on the guide piece 270 of the present embodiment, and the guide piece 270 is inserted into a protrusion insertion hole 254 formed in the guide groove 252. The protrusions 273 have a plate shape, and bend each end of the distal end portion 72 of the guide piece 270 in the short side direction (direction intersecting the guide direction of the guide piece 270) toward the protrusion insertion hole 254. Is formed. Note that each of the protrusions 273 is formed, for example, in a right angle with respect to the distal end portion 72.

  The protrusion insertion hole 254 is formed by cutting out the groove bottom wall 52B of the guide groove 152 so as to open to the opposite side (lower side in FIG. 14) of the guide piece 270. Both protrusions 273 can be inserted into (inserted into) the protrusion insertion hole 254 from the opposite side (the lower side in FIG. 14) of the guide piece 270. In the state in which the substrate cover 60 is disposed at a predetermined mounting position, both the protrusions 273 are configured to abut on the inner peripheral surface 254A on the distal end side of the guide piece 270 in the protrusion insertion hole 254.

  In this manner, the protrusion 273 is inserted into the protrusion insertion hole 254 and abuts against the inner peripheral surface 254A, so that the Y axis direction (the guide direction of the guide piece 270 with respect to the guide groove 252) is one direction (upper side in FIG. 14). ), The movement of the substrate cover 60 is restricted, so that the substrate cover 60 is positioned at the mounting position. For this reason, the substrate cover 60 can be more reliably disposed at a predetermined mounting position.

  Further, in the present embodiment, the protrusion 273 is formed by bending both end portions in the short side direction (direction intersecting with the guide direction of the guide piece 270) of the distal end portion 72 of the guide piece 270 toward the protrusion insertion hole 254. Is forming. In this way, the bending direction when forming the protrusions 273 is set to a direction intersecting with the direction in which the protrusions 273 abut on the protrusion insertion holes 254, so that each protrusion 273 is within the protrusion insertion hole 254. When contacting the peripheral surface 254A, the rigidity of each protrusion 273 can be further increased.

  The protrusion 273 is formed by bending a part of the guide piece 270 toward the protrusion insertion hole 254. With such a configuration, the protrusion 273 can be easily formed.

<Embodiment 4>
Next, a fourth embodiment of the present invention will be described with reference to FIG. The backlight device 312 according to the present embodiment has a configuration in which the guide pieces and the guide groove portions are different from those in the above embodiments. In addition, the same code | symbol is attached | subjected to the same part as said each embodiment, and the overlapping description is abbreviate | omitted.

  As shown in FIG. 15, a protrusion 373 is formed on the guide piece 370 of the present embodiment. On the other hand, a protrusion insertion hole 354 is formed in the guide groove 352. The protrusion 373 is configured to be inserted into the protrusion insertion hole 354 in a state where the substrate cover 60 is disposed at a predetermined mounting position. The protrusion 373 is formed in a shape protruding from the surface facing the groove bottom wall 352B of the guide groove 352 toward the groove bottom wall 352B at the distal end 72 of the guide piece 370, and has a substantially hemispherical shape. .

  The protrusion insertion hole 354 is a closed hole through which the protrusion 373 can be inserted, and has a circular shape in plan view. Further, in the state in which the substrate cover 60 shown in FIG. 15 is disposed at a predetermined mounting position, the guide piece 370 and the mounting base 50 are parallel and are disposed with a gap Z1 in the Z-axis direction. ing. The guide piece 370 can be elastically deformed, and can be bent and deformed toward the mounting base portion 50 by using the base end side of the guide piece 370 as a fulcrum, for example, by the gap Z1. And the protrusion height of the protrusion part 373 is set smaller than the clearance gap Z1.

  With the above configuration, when the guide piece 370 is inserted into the guide groove portion 352 from the left side of FIG. 15, the protrusion 373 comes into contact with the groove bottom wall 352B, and the guide piece 370 is positioned upward in FIG. Bend. Further, the guide piece 370 is inserted into the guide groove 352, and when the protrusion 373 reaches the same position as the protrusion insertion hole 354 in the Y-axis direction, the guide piece 370 is elastically restored and the protrusion 373 protrudes. It is inserted into the part insertion hole 354.

  As described above, in the present embodiment, the protrusion 373 is inserted into the protrusion insertion hole 354, so that the movement of the substrate cover 60 is restricted in the Y-axis direction (the guide direction of the guide piece with respect to the guide groove). As a result, the substrate cover 60 is positioned at a predetermined mounting position. For this reason, the substrate cover 60 can be more reliably disposed at a predetermined mounting position.

  Further, if the projection 373 is inserted into the projection insertion hole 354 that is a closed hole as in the present embodiment, the movement of the substrate cover 60 can be restricted in both directions in the Y-axis direction. In this way, a screw or the like that has been conventionally used for fixing the substrate cover 60 can be eliminated, and the cost associated with the screw can be reduced.

<Embodiment 5>
Next, Embodiment 5 of the present invention will be described with reference to FIG. The backlight device 412 of the present embodiment is configured such that the configuration of the guide piece and the guide groove is different from those of the above-described embodiments. In addition, the same code | symbol is attached | subjected to the same part as said each embodiment, and the overlapping description is abbreviate | omitted.

  FIG. 16 is a plan view showing a state in which the bottom plate 14a of the chassis 14 is viewed from the front side. As shown in FIG. 16, for example, a columnar protrusion 454 is formed toward the guide piece 470 on the groove bottom wall 52 </ b> B of the guide groove 452 of the present embodiment. On the other hand, a protrusion insertion hole 473 into which the protrusion 454 can be inserted is formed at the distal end portion 72 of the guide piece 470. The protrusion insertion hole 473 is formed in a shape that opens to the distal end side of the guide piece 470. In a state where the substrate cover 60 is disposed at a predetermined mounting position, the protrusion 454 is configured to abut on the inner peripheral surface 473A on the proximal end side of the guide piece 270 in the protrusion insertion hole 473.

  With the above configuration, when the guide piece 470 is inserted into the guide groove 452 from below in FIG. 16, the protrusion 454 comes into contact with the inner peripheral surface 473A of the protrusion insertion hole 473, thereby The movement of the substrate cover 60 is restricted in one direction (the tip side of the guide piece 470) in the guide direction of the guide piece 470 with respect to the groove 452, and as a result, the substrate cover 60 is positioned at the mounting position. For this reason, the substrate cover 60 can be more reliably disposed at a predetermined mounting position.

<Embodiment 6>
Next, Embodiment 6 of the present invention will be described with reference to FIG. The backlight device 512 of the present embodiment has a configuration in which the guide pieces and the guide groove portions are different from those in the above embodiments. In addition, the same code | symbol is attached | subjected to the same part as said each embodiment, and the overlapping description is abbreviate | omitted.

  FIG. 17 is a plan view showing a state in which the bottom plate 14a of the chassis 14 is viewed from the front side. As shown in FIG. 17, a columnar protrusion 554 is formed on the groove bottom wall 52 </ b> B of the guide groove 552 of the present embodiment toward the guide piece 570. For example, two protrusions 554 are arranged in the X-axis direction. On the other hand, the distal end side of the distal end portion 572 of the guide piece 570 is formed so as to be narrower than the proximal end side, and has a shape that can be inserted between the both projecting portions 554.

  In other words, the front end portion 572 is formed in a shape in which both end portions in the X-axis direction are notched, and the notch portions are respectively projecting portion insertion holes 573 into which the projecting portions 554 can be inserted. In a state where the substrate cover 60 is disposed at a predetermined mounting position, both the protrusions 554 are in contact with the inner peripheral surface 573A of the protrusion insertion hole 573.

  With the above configuration, the guide piece 570 is inserted into the guide groove portion 552 from below in FIG. 17, and each protrusion 554 comes into contact with the side surface 573 </ b> A of the guide piece 570, so that the Y-axis direction (guide to the guide groove portion 552). As a result of the movement of the substrate cover 60 being restricted in one direction (the guide side of the guide piece 570) in one direction (the guide direction of the piece 570), the substrate cover 60 is positioned at the mounting position. For this reason, the substrate cover 60 can be more reliably disposed at a predetermined mounting position. Further, the distal end side of the distal end portion 572 of the guide piece 570 is inserted between both the projecting portions 554. For this reason, the substrate cover 60 can be positioned more reliably in the X-axis direction.

<Embodiment 7>
Next, Embodiment 7 of the present invention will be described with reference to FIG. In the backlight device 612 of the present embodiment, the configurations of the guide pieces and the guide groove portions are different from those of the above embodiments. In addition, the same code | symbol is attached | subjected to the same part as said each embodiment, and the overlapping description is abbreviate | omitted.

  FIG. 18 is a plan view showing a state in which the bottom plate 14a of the chassis 14 is viewed from the front side. As shown in FIG. 18, the distal end 672 of the guide piece 670 of this embodiment is formed in such a manner that the side surface 672A is inclined inwardly toward the distal end side (upper side in FIG. 18). In other words, the distal end portion 672 of the guide piece 670 has a shape that tapers toward the distal end side.

  The guide groove portion 652 connects a pair of groove side walls 652A (a pair of wall portions, side walls of the guide groove portion) that are arranged to face each other with the front end portion 672 of the guide piece 670 interposed therebetween, and the front ends of both groove portion side walls 652A. And a groove bottom wall 652B. A facing surface 653 of each groove side wall 652A facing the side surface 672A of the guide piece 670 is arranged in an inclined manner along the facing side surface 672A. In other words, the pair of groove side walls 652 </ b> A is formed in such a manner that the facing distance between both facing surfaces 653 decreases toward the tip end side of the guide piece 670.

  In a state where the substrate cover 60 is disposed at a predetermined mounting position, each side surface 672A of the guide piece 670 is configured to abut on each opposing surface 653 of the guide groove portion 652.

  With the above configuration, when the guide piece 670 is inserted into the guide groove portion 652 from below in FIG. 18, each side surface 672A comes into contact with each opposing surface 653 of the guide groove portion 652. As a result, the movement of the substrate cover 60 is restricted in one direction (the leading end side of the guide piece 670) in the Y-axis direction (the guide direction of the guide piece 670 with respect to the guide groove portion 652). As a result, the substrate cover 60 is positioned at the mounting position. Is done. For this reason, the substrate cover 60 can be more reliably arranged at the mounting position.

<Eighth embodiment>
Next, an eighth embodiment of the present invention will be described with reference to FIGS. The backlight device 712 of the present embodiment is configured such that the configuration of the guide piece and the guide groove is different from those of the above-described embodiments. In addition, the same code | symbol is attached | subjected to the same part as said each embodiment, and the overlapping description is abbreviate | omitted. In each of the above embodiments, the guide groove portion is provided in the bottom plate 14a (mounting base portion 50) of the chassis 14. On the other hand, in the present embodiment, the guide groove portion 752 is provided in the control substrate 40.

  As shown in FIG. 19, the control board 40 is attached to the mounting base 50 by screws B <b> 1 provided in the vicinity of the four corners in plan view, for example. As shown in FIG. 20, the guide groove portion 752 is provided at a position facing the guide piece 770 of the substrate cover 60. The guide groove 752 includes a pair of groove side walls 752A erected from the control substrate 40 toward the substrate cover 60, and a groove bottom wall 752B formed so as to connect the tips of both groove side walls 752A ( (See FIG. 19).

  The distal end portion 72 of the guide piece 770 is configured to be able to be inserted from the Y-axis direction into the guide groove portion 752 (between both groove portion side walls 752A opposed to each other). A protrusion 773 that protrudes toward the groove bottom wall 752B is formed at the tip 72 of the guide piece 770. In the groove bottom wall 752B, a protrusion insertion hole 754 is formed at a position facing the protrusion 773. In a state where the substrate cover 60 is arranged at a predetermined mounting position (position in FIG. 20), the protrusion 773 is inserted into the protrusion insertion hole 754.

  More specifically, when the guide piece 770 is inserted from the right side of FIG. 20 into the guide groove 752 (between both groove side walls 752A), the protrusion 773 comes into contact with the groove bottom wall 752B. Further, when the guide piece 770 is inserted through the guide groove 752, the protrusion 773 or the groove bottom wall 752B is elastically deformed (flexed) in a direction away from each other. When the protrusion 773 reaches the protrusion insertion hole 754, the protrusion 773 or the groove bottom wall 752 </ b> B is elastically restored, so that the protrusion 773 is inserted into the protrusion insertion hole 754.

  From the above configuration, in this embodiment, the board cover 60 can be guided with respect to the control board 40 by fitting the guide piece 770 into the guide groove portion 752. Further, in the state in which the substrate cover 60 is disposed at a predetermined mounting position (the position in FIG. 20), the protrusion 773 is inserted into the protrusion insertion hole 754. Can be surely arranged.

<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 the first to seventh embodiments, the chassis 14 includes the guide groove and the substrate cover 60 includes the guide piece. However, the chassis 14 includes the guide piece and the substrate cover 60 includes the guide groove. Also good.

  (2) The shapes of the guide one-side marker 73 and the marker visual recognition hole 54 are not limited to a circular shape and can be changed as appropriate. For example, the guide one-side marker 73 and the marker visual recognition hole 54 may be rectangular or triangular. Moreover, the shape of the guide piece side marker 73 and the shape of the marker visual recognition hole 54 do not need to correspond.

  (3) The shape of each protrusion illustrated in the above embodiment and the shape of each protrusion insertion hole can be changed as appropriate.

  (4) In the eighth embodiment, the control substrate 40 includes the guide groove portion 752 and the substrate cover 60 includes the guide piece 770. However, the configuration is not limited thereto. The control substrate 40 may include a guide piece 770 and the substrate cover 60 may include a guide groove portion 752.

  (5) In the said embodiment, although the control board 40 was illustrated as a circuit board, it is not limited to this. If it is a circuit board and a board | substrate cover attached to the chassis 14, it is possible to apply the structure (structure fixed with a protrusion and a latching | locking part) of this invention.

  (6) The shape of the mounting base part 50 is not limited to the thing of the said embodiment. Further, the board cover 60 and the control board 40 may be configured to be attached to a portion of the bottom plate 14a of the chassis 14 where the mounting base 50 is not formed. That is, the formation part of a protrusion is not limited to the attachment base part 50, It can change suitably.

  (7) Although the case where the cold cathode tube 17 is used as the light source has been described in the above embodiment, the present invention is not limited to this. It is also possible to use a hot cathode tube or an LED as the light source.

  (8) In the above embodiment, the liquid crystal panel 11 and the chassis 14 are vertically placed with their short sides aligned with the vertical direction. However, the liquid crystal panel 11 and the chassis 14 indicate the long sides. What is made into the vertical installation state matched with the perpendicular direction is also contained in this invention.

  (9) Although the TFT is used as the switching element of the liquid crystal display device 10 in the above embodiment, the present invention can be applied to a liquid crystal display device using a switching element other than the TFT (for example, a thin film diode (TFD)), and color display. In addition to the liquid crystal display device, the present invention can be applied to a liquid crystal display device that displays black and white.

  (10) In the above-described embodiment, the liquid crystal display device 10 using the liquid crystal panel 11 as the display panel has been exemplified. However, the present invention can also be applied to display devices using other types of display panels.

  (11) In the above-described embodiment, the television receiver TV including the tuner is exemplified. However, the present invention can also be applied to a display device not including the tuner.

DESCRIPTION OF SYMBOLS 10 ... Liquid crystal display device (display device), 11 ... Liquid crystal panel (display panel), 12, 112, 212, 312, 412, 512, 612, 712 ... Backlight device (illumination device), 14 ... Chassis, 17 ... Cold Cathode tube (light source), 40 ... control board (circuit board), 52, 152, 252, 352, 452, 552, 652, 752 ... guide groove, 54 ... marker viewing hole, 55 ... chassis side marker, 60 ... board cover 64 ... Cover side marker, 70, 170, 270, 370, 470, 570, 670, 770 ... Guide piece, 72A ... Opposing surface (opposite surface of the guide piece with the guide groove), 73 ... Guide one side marker, 154 254, 354, 473, 573, 754 ... projection insertion hole, 173, 273, 373, 454, 554, 773 ... projection, 6 2A ... groove sidewalls (pair of wall portions, the side wall portion of the guide groove), TV ... television receiver apparatus

Claims (11)

A light source;
A chassis in which the light source is accommodated and a circuit board is attached;
A board cover attached to the chassis and arranged to cover the circuit board,
Either one of the substrate cover and the chassis includes a guide piece, and the other includes a guide groove portion that guides the guide piece, so that the substrate cover can be guided to a predetermined mounting position in the chassis. There is a lighting device. One of the guide groove and the guide piece is formed with a protrusion, and the other is formed with a protrusion insertion hole through which the protrusion is inserted.
2. The board cover is positioned at the mounting position in the guide direction of the guide piece with respect to the guide groove by inserting the protrusion into the protrusion insertion hole. The lighting device described in 1.   The lighting device according to claim 2, wherein the protrusion is formed by bending a part of the guide groove or a part of the guide piece toward the protrusion insertion hole. A chassis side marker is formed on the periphery of the substrate cover in the chassis,
A cover side marker is formed on the substrate cover,
The chassis-side marker and the cover-side marker are arranged at the same position in the guide direction of the guide piece with respect to the guide groove when the board cover is arranged at the attachment position. The lighting device according to any one of claims 1 to 3. A guide piece side marker is formed on the surface of the guide piece facing the guide groove,
In the state where the substrate cover is arranged at the mounting position, a marker visualizing hole that allows the guide piece side marker to be seen from the opposite side of the guide piece at a position overlapping the guide piece side marker in the guide groove portion. The lighting device according to any one of claims 1 to 4, wherein the lighting device is formed to penetrate therethrough.   The lighting device according to claim 5, wherein a shape of the marker visual recognition hole is similar to a shape of the guide one-side marker. A side wall portion of the guide groove portion is configured, and a pair of wall portions arranged in an opposing manner so as to sandwich the guide piece is provided,
The guide piece has a shape that tapers toward the tip side,
The pair of wall portions are formed in a shape in which the facing interval decreases toward the tip side,
When the guide piece is moved relative to the leading end side with respect to the guide groove portion, the guide piece comes into contact with each of the pair of wall portions, so that the substrate cover is guided to the guide groove portion. The lighting device according to any one of claims 1 to 6, wherein the lighting device is configured to be positioned at the mounting position in a guide direction of the piece.   The lighting device according to claim 1, wherein the circuit board includes the guide piece or the guide groove portion. The lighting device according to any one of claims 1 to 8,
And a display panel that performs display using light from the lighting device.   The display device according to claim 9, wherein the display panel is a liquid crystal panel using liquid crystal.   A television receiver comprising the display device according to claim 9.

Images