JP2008292689A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device in which a terminal of a substrate and an opening part of a cabinet can be exactly aligned with each other and an aperture between the terminal and the opening part can be minimized. <P>SOLUTION: The display device comprises: a display part having a display surface on the front side; a plurality of terminals with which lead wires are connected/separated; the substrate 4 attached to the back side of a display part; and the cabinet 3 with which the back side of the display part is covered, wherein a hole 42 is opened on one side of the substrate 4 and cabinet 3 and a protrusion part 36 which is inserted into the hole 42 is disposed on the other side, a relative movement of the substrate 4 and cabinet 3 in the direction along the display surface is regulated and, thereby, the exact alignment of the terminal of the substrate 4 and the opening part of the cabinet 3 with each other is made possible. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a display device such as a liquid crystal display device, a plasma display device, an SED display, and an EL display.

  A display device such as a television includes a display unit having a display surface for displaying an image on the front side, a frame that is fitted on the peripheral part of the display unit to surround the peripheral part, and covers the rear side of the display unit And a peripheral portion of the frame body and the cabinet is attached to the peripheral portion of the display portion by a male screw such as a screw (for example, see Patent Document 1).

In addition, the liquid crystal television is attached to the rear side of the panel unit for outputting various video signals, the backlight unit for irradiating the panel unit with light, and the rear side of the backlight unit. The display unit is configured by a substrate such as a terminal substrate on which a plurality of terminals to which conductive wires such as cables are connected / disconnected to / from an external device are mounted. The terminals of the board are juxtaposed so that the conductors can be connected / disconnected from the side of the display unit in the lateral direction, and the side of the cabinet corresponds to the plurality of terminals. There are several open sections.
JP 2004-151305 A

  By the way, since the cabinet of the display device is integrally formed of synthetic resin, when the display device is relatively large, the cabinet is likely to have dimensional variations.

  However, the peripheral edge of the cabinet is attached to the peripheral edge of the display part by male screws, and the board is attached to a location separated from the peripheral edge of the cabinet. For display devices that are juxtaposed on the rear surface of the display unit so that they can be connected / disconnected from the back and forth in the back and forth direction, and a plurality of open portions corresponding to the terminals are opened on the rear surface of the cabinet, the dimensions of the cabinet The position of the open part with respect to the terminal shifts due to the variation of the terminal, and the terminal of the board and the open part of the cabinet cannot be accurately aligned, resulting in a relatively large gap between the terminal and the open part. A plan was requested.

  The present invention has been made in view of such circumstances, and a main purpose thereof is to accurately align the terminal of the board and the open part of the cabinet, and to make the clearance between the terminal and the open part small. To provide an apparatus.

  The display device according to the present invention includes a display unit having a display surface on the front side, a terminal to which a conductive wire is connected / disconnected, a substrate attached to the rear side of the display unit, and a location corresponding to the terminal. In the display device having an open portion and a cabinet covering the rear side of the display portion, the substrate and the cabinet include restriction means for restricting relative movement of the substrate and the cabinet in the direction along the display surface. It is characterized by providing.

  In this invention, since the restricting means regulates the relative movement in the direction along the display surface of the substrate and the cabinet, the size of the cabinet is likely to vary in a relatively large display device. In addition, the terminal of the board and the open part of the cabinet can be accurately aligned, the gap between the terminal and the open part can be made small, and the workability of assembling the cabinet can be improved.

Further, in the display device according to the present invention, it is preferable that the restricting means has a hole opened in one of the substrate and the cabinet, and a convex portion that is fitted into the hole and protrudes from the other. .
In this invention, the restricting means can be simply configured, and when the cabinet is assembled, the relative movement of the substrate and the cabinet can be easily regulated by inserting the convex portion into the hole. it can.

In the display device according to the present invention, it is preferable that the display unit and the cabinet include positioning means for the display unit of the cabinet.
In this invention, since the positioning means determines the position of the cabinet with respect to the display unit, the cabinet can be easily attached to the display unit without being affected by the regulating unit.

In the display device according to the present invention, it is preferable that the convex portion has a cylindrical shape, and the display portion has a shaft portion that is fitted into the convex portion.
In this invention, since the convex part of the regulating means also serves as a part of the positioning means, the configuration of the positioning means can be simplified, and the cabinet can be more easily attached to the display part.

In the display device according to the present invention, the positioning means includes a fitting hole opened in one of the display part and the cabinet, and a shaft part fitted into the fitting hole and protruding from the other. It is preferable.
In this invention, when the cabinet is assembled, the position of the cabinet with respect to the display unit can be determined by inserting the shaft portion into the insertion hole.

In the display device according to the present invention, it is preferable that the display unit has a support plate that supports the substrate, and the shaft portion is formed integrally with the support plate.
In the present invention, since the shaft portion constituting the positioning means is integrally formed on the support plate supporting the substrate, the positioning means can be disposed in the vicinity of the regulating means, Positioning by regulation and positioning means can be simplified.

  As described above in detail, according to the present invention, the terminal of the board and the open portion of the cabinet can be accurately aligned by the restricting means, and the gap between the terminal and the open portion can be reduced.

Hereinafter, the present invention will be described in detail with reference to the drawings showing embodiments thereof.
Embodiment 1
FIG. 1 is a longitudinal side view showing the configuration of a display device according to the present invention, and FIG. 2 is a front view showing the configuration of the display device.

  The illustrated display device includes a panel unit 11 on the front side, a backlight unit 12 that irradiates light to the panel unit 11 on the rear side, and a substrate module that is attached to a rear surface 1a of the backlight unit 12. A display unit 1 having a substantially rectangular parallelepiped shape, a frame 2 that fits around the periphery of the display unit 1 and surrounds the periphery, and a cabinet 3 that covers the rear side of the display unit 1 are provided.

  The panel unit 11 includes a panel 11a having a display surface on the front side and a substantially rectangular parallelepiped shape, and an optical sheet 11b such as a diffusion plate disposed on the rear side of the panel 11a. The backlight unit 12 is juxtaposed vertically on the rear side of the optical sheet 11b, and accommodates and supports a plurality of lamps 12a for irradiating light to the optical sheet 11b side, and a box-shaped chassis 12b. The peripheral part of the panel part 11 is supported by the chassis 12b. The lamp 12a is a cold cathode tube having electrodes at both ends, and an inverter circuit board is connected to the electrodes at both ends of each lamp 12a, and the brightness is controlled by a pulse width modulation signal.

  The chassis 12b has a substantially rectangular parallelepiped shape, and includes a frame portion 12c formed by forming a metal plate, and a lid plate portion 12d formed by closing the rear end of the frame portion 12c and forming a metal plate. The plate portion 12d is a rear surface 1a of the display portion 1, and the substrate module A is attached to the rear surface 1a. Further, a mounting piece 12f having a mounting hole 12e is provided on the peripheral edge of the chassis 12b (see FIG. 9).

  3 is a rear view showing the configuration of the substrate module A, FIG. 4 is a rear view showing the configuration of the support plate 5, FIG. 5 is a side view showing the configuration of the support plate 5, and FIG. 6 is a diagram showing the substrate module A attached to the chassis 12b. FIG. 7 is an enlarged cross-sectional view of the main part, and FIG. 8 is an enlarged cross-sectional view of the main part in an exploded state. The substrate module A includes a terminal 41 for input / output signals input / output to / from an external device, a processing circuit for processing an image displayed on the panel unit 11, a power supply circuit for supplying a voltage to the processing circuit, and the like. 4 and a support plate 5 on which the substrate 4 is mounted on one surface. The substrate 4 has a plurality of holes 42 into which shafts described later are loosely fitted.

  The terminal 41 has a D terminal, three RCA pin-video input terminals, an S terminal, an analog tuner terminal, a digital tuner terminal, a DVI terminal, an HDMI terminal, and an i-LINK terminal. It is juxtaposed on the back of the substrate. The D terminal is for digital broadcast video connecting the digital tuner and the television, the RCA pin-video input terminal is for capturing the video output signal of the external device, and the S terminal is for separating the luminance signal and the color signal. In this way, S-video signals with reduced image degradation due to mutual interference are input and output, and the analog tuner terminal receives analog broadcast video, and the digital tuner terminal receives digital broadcast video. The DVI terminal is for connecting an external device such as a personal computer, the HDMI terminal is for capturing digital video and audio, and the i-LINK terminal is for capturing digital broadcasting. belongs to.

  The support plate 5 is opposed to the rear surface 1a, and includes a plate portion 51 on which the substrate 4 is mounted on one surface, and mounting pieces 52 and 53 that rise from the side edge of the plate portion 51 to the chassis side. One attachment piece 52 is hooked on a latching pin protruding from the surface 1a of the other, and the other attachment piece 53 is attached to the rear surface 1a with a male screw such as a screw. It is configured to be arranged on the rear side. A plurality of support pieces 54 for supporting the substrate 4 are integrally formed on the plate portion 51 by cutting up and a cylindrical shaft portion 55 is integrally formed on the support piece 54 by burring. The shaft portion 55 extends rearward, and a screw hole 55a penetrating in the front-rear direction is provided in the center portion.

  FIG. 9 is a partially enlarged vertical side view showing the configuration of the display device. The frame body 2 covers the front surface of the panel portion 11, and has an annular plate portion 21 whose upper and lower portions are long sides and a frame portion 22 that is continuous with the outer peripheral edge of the annular plate portion 21 and faces the peripheral edge of the panel portion 11. And is integrally formed of synthetic resin. The annular plate portion 21 has screw holes 23a, and a plurality of bosses 23 corresponding to the mounting holes 12e are integrally formed. The boss 23 has a cylindrical shape and extends rearward.

  FIG. 10 is a rear view showing the configuration of the cabinet 3. As shown in FIGS. 9 and 10, the cabinet 3 includes a frame portion 31 that covers the peripheral portion of the display unit 1, and a lid plate portion 32 that has a deep dish shape and covers the rear side of the display unit 1. It is integrally molded with a synthetic resin. The frame portion 31 is provided with a plurality of bosses 33 having insertion holes 33a corresponding to the mounting holes 12e and the screw holes 23a of the bosses 23, and the male screws 6 such as screws inserted into the insertion holes 33a are attached to the mounting holes. The cabinet 3 and the frame 2 are configured to be attached to the chassis 12b by tightening from 12e to the screw holes 23a of the boss 23.

  In the middle of the cover plate portion 32 in the vertical direction, at a location facing the substrate 4 of the substrate module A, a plurality of open portions 34 opened in a size corresponding to the terminals 41, and extending forward, A plurality of cylindrical bosses 35 and convex portions 36 that are formed at the tips of the bosses 35 and are fitted into the holes 42 are provided. The opening 34 is opened to a size that substantially matches each tip of the terminal 41. The convex portion 36 has a cylindrical shape and is configured such that the shaft portion 55 is fitted into the inner hole 36a. Further, the tip of the convex portion 36 is chamfered to serve as a guide surface when being inserted into the hole 42. The convex portion 36 and the hole 42 constitute a restricting means for restricting relative movement in the direction along the display surface of the substrate 4 and the cabinet 3, and the shaft portion 55 and the hole 36 a are positions relative to the display portion 1 of the cabinet 3. Positioning means for determining the position.

  In the display device configured as described above, the support plate 5 of the substrate module A is attached to the chassis 12b of the backlight unit 12, the shaft portion 55 is provided on the support piece 54 of the support plate 5, and the substrate 4 Since the relative movement restricting hole 42 is provided in the cabinet 3, when the cabinet 3 is assembled, for example, the shaft portion 55 is loosely fitted in the hole 42 of the substrate 4, and the cabinet 3 is displayed in a state where the substrate 4 is temporarily positioned. 1, the convex portion 36 of the cabinet 3 can be fitted into the hole 42 of the substrate 4, and the shaft portion 55 can be fitted into the hole 36 a of the convex portion 36. With this insertion, the relative movement of the substrate 4 and the cabinet 3 in the direction along the display surface can be restricted, and the position of the cabinet 3 with respect to the chassis 12b (display unit 1) can be determined. Thereafter, the male screw 7 such as a screw inserted from the boss 35 of the cabinet 3 into the hole 36 a is tightened into the screw hole 55 a of the shaft portion 55, thereby fixing the substrate 4 to the support piece 54 of the support plate 5. In addition, the lid plate portion 32 of the cabinet 3 can be fixed to the chassis 12 b via the support plate 5. Therefore, even when the size of the cabinet 3 is likely to vary with a relatively large display device, the terminal 41 mounted on the substrate 4 and the open portion 34 of the cabinet 3 are accurately aligned. And the gap between the outer peripheral portion of the terminal 41 and the open portion 34 can be made small.

  After the lid plate portion 32 of the cabinet 3 is fixed to the chassis 12b, the frame 2 is put on the peripheral portion of the display portion 1 from the front side of the display portion 1, and screws inserted into the insertion holes 33a in the peripheral portion of the cabinet 3 By tightening the male screw 6 from the mounting hole 12e into the screw hole 23a of the boss 23, the peripheral edge portion of the cabinet 3 and the frame body 2 can be attached to the chassis 12b (display portion 1). In this case, since the insertion hole 33a and the mounting hole 12e are formed to have a slightly larger diameter than the male screw 6, the peripheral edge of the cabinet 3 even when the position of the insertion hole 33a with respect to the mounting hole 12e is slightly shifted. The portion can be fixed to the chassis 12b.

Further, since the hole 42 provided in one of the substrate 4 and the cabinet 3 and the convex portion 36 inserted into the hole 42 and projecting from the other constitute a restricting means, the restricting means can be simplified. Can be configured.
Moreover, since the positioning means with respect to the display part 1 of the cabinet 3 is provided, the cabinet 3 can be simply attached to the display part 1 without being influenced by the regulation means.

  Further, since the convex portion 36 has a cylindrical shape and the shaft portion 55 fitted into the convex portion 36 is provided in the chassis 12b of the display portion 1, the configuration of the positioning means can be simplified, and the cabinet is further enhanced by the display portion. Can be installed easily.

  Further, since the shaft portion 55 is formed integrally with the support plate 5 that supports the substrate 4, the restriction by the restricting means and the positioning by the positioning means can be simplified, and the cabinet 3 is attached more easily by the display portion 1. be able to.

Embodiment 2
FIG. 11 is a cross-sectional view of the main part showing another configuration of the display device according to the present invention, and FIG. 12 is a cross-sectional view of the state in which the cabinet 3 is removed. In this display device, instead of providing the regulating means and the positioning means at the same position as in the first embodiment, the regulating means and the positioning means are provided separately in the direction along the display surface.

  The restricting means includes a plurality of holes 43 provided in the substrate 4 and a plurality of convex portions 37 extending inward toward the inside of the lid plate portion 32 and having a columnar shape inserted into the holes 43. The tip of the convex portion 37 is chamfered, and serves as a guide surface when being inserted into the hole 43. Further, the substrate 4 has a plurality of temporary positioning holes 44 and insertion holes 45 which are opened at positions separated from the holes 43, and the temporary positioning convex portions 56 and insertion holes which are loosely fitted into the temporary positioning holes 44. A shaft portion 57 that is loosely fitted to the shaft 45 and has a screw hole 57a in the center is provided on the support piece 54 of the support plate 5 by burring.

  The positioning means is formed at a plurality of shaft portions 57 and a tip end portion of a cylindrical boss 38 extending forward from the inside of the lid plate portion 32, and an insertion hole 38a into which the shaft portion 57 is inserted. Have

  In this display device, when the cabinet 3 is assembled, for example, the temporary positioning convex portion 56 is loosely fitted in the temporary positioning hole 44 of the substrate 4, and the substrate 4 is temporarily positioned on the support plate 5. The shaft portion 57 is loosely fitted into the insertion hole 45. By covering the cabinet 3 on the rear side of the display unit 1 in this state, the temporary positioning convex portion 56 of the cabinet 3 can be inserted into the temporary positioning hole 44 of the substrate 4, and the shaft portion 57 is further inserted into the insertion hole 38a. Can be inserted. With this insertion, the relative movement of the substrate 4 and the cabinet 3 in the direction along the display surface can be restricted, and the position of the cabinet 3 with respect to the chassis 12b (display unit 1) can be determined. Thereafter, the board 4 can be fixedly fastened to the support piece 54 of the support plate 5 by tightening the male screw 7 such as a screw inserted into the boss 38 of the cabinet 3 into the screw hole 57a of the shaft portion 57. In addition, the lid plate portion 32 of the cabinet 3 can be fixed to the chassis 12 b via the support plate 5. Therefore, even when the size of the cabinet 3 is likely to vary with a relatively large display device, the terminal 41 mounted on the substrate 4 and the open portion 34 of the cabinet 3 are accurately aligned. And the gap between the outer peripheral portion of the terminal 41 and the open portion 34 can be made small.

  Moreover, the insertion hole 38a opened in one of the display part 1 and the cabinet 3 and the shaft part 57 inserted in the insertion hole 38a and projecting from the other constitute a positioning means, whereby the cabinet 3 When is installed, the position of the cabinet 3 with respect to the display unit 1 can be easily determined. Further, the positioning means can be disposed in the vicinity of the regulating means, and the regulation by the regulating means and the positioning by the positioning means can be simplified.

  Further, since the temporary positioning convex portion 56 and the shaft portion 57 are integrally formed on the support plate 5 supporting the substrate 4, the restriction by the restriction means and the positioning by the positioning means can be simplified.

  In the embodiment described above, the holes 42 and 43 are provided in the substrate 4 as the restricting means, and the convex portions 36 and 37 are provided in the cabinet 3, but in addition, the convex portions 36 or 37 are provided in the substrate 4 and the cabinet 4. 3 may be provided with holes 42 or 43. Further, as the positioning means, the support plate 5 is provided with the shaft portion 55 or 57, and the cabinet 3 is provided with the hole 36a or the insertion hole 38a. In addition, the support plate 5 is provided with the hole 36a or the insertion hole 38a. 3 may be provided with a shaft portion 55 or a shaft portion 57.

  Further, in the embodiment described above, the regulating means and positioning means are provided in the support plate 5 and the cabinet 3 that support the substrate 4, but in addition, the support plate 5 is eliminated and the substrate 4 is attached to the chassis 12b. The chassis 12b and the cabinet 3 may be provided with restricting means and positioning means.

  The display device according to the present invention may be a liquid crystal display device such as a liquid crystal television, or a display device such as a plasma display device or an EL display.

It is a vertical side view which shows the structure of the display apparatus which concerns on this invention. It is a front view which shows the structure of the display apparatus which concerns on this invention. It is a rear view which shows the structure of the board | substrate module of the display apparatus which concerns on this invention. It is a rear view which shows the structure of the support plate of the display apparatus which concerns on this invention. It is a side view which shows the structure of the support plate of the display apparatus which concerns on this invention. It is a side view which shows the state by which the board | substrate module of the display apparatus which concerns on this invention was attached to the chassis. It is an expanded sectional view of the important section of the display concerning the present invention. It is an expanded sectional view of the state which decomposed | disassembled the component of the principal part of the display apparatus which concerns on this invention. It is the vertical side view which expanded a part which shows the structure of the display apparatus which concerns on this invention. It is a rear view which shows the structure of the cabinet of the display apparatus which concerns on this invention. It is sectional drawing of the principal part which shows the other structure of the display apparatus which concerns on this invention. It is sectional drawing of the state which has removed the cabinet of the display apparatus which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display part 3 Cabinet 34 Open part 36,37 Convex part (regulation means)
36a hole (positioning means)
38a Insertion hole (positioning means)
4 Substrate 41 Terminal 42, 43 Hole (Regulator)
5 Support plate 55, 57 Shaft (positioning means)

Claims (6)

  A display unit having a display surface on the front side; a terminal to which a conductive wire is connected / disconnected; a substrate attached to the rear side of the display unit; and an open part at a position corresponding to the terminal; A display device comprising a cabinet that covers the rear side of the display unit, wherein the substrate and the cabinet are provided with restriction means for restricting relative movement of the substrate and the cabinet in the direction along the display surface. .   The display device according to claim 1, wherein the restricting unit includes a hole provided in one of the substrate and the cabinet, and a convex portion that is fitted into the hole and protrudes from the other.   The display device according to claim 1, wherein the display unit and the cabinet include positioning means for the display unit of the cabinet.   The display device according to claim 2, wherein the convex portion has a cylindrical shape, and the display portion includes a shaft portion that is fitted into the convex portion.   The display device according to claim 3, wherein the positioning means includes an insertion hole provided in one of the display unit and the cabinet, and a shaft part that is inserted into the insertion hole and protrudes from the other.   The display device according to claim 4, wherein the display unit includes a support plate that supports the substrate, and the shaft portion is formed integrally with the support plate.

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