JP4699093B2 - Thin display device and liquid crystal display device - Google Patents

Description

  The present invention relates to a thin display device such as a liquid crystal television, and more specifically, by providing a reinforcing member on the back surface of a chassis that supports a display member, the strength can be increased and a large screen can be handled. The present invention relates to a thin display device that can be attached to a table stand and can be easily attached to a wall hanging bracket.

  A thin display device using a liquid crystal display panel as a display element is thin and lightweight compared to a conventional display device using a cathode ray tube as a display element, but because the viewing angle characteristics of the liquid crystal display panel are narrow, The liquid crystal display device must have a left-right panning adjustment mechanism and a vertical tilting adjustment mechanism so that the liquid crystal display surface faces the viewer, and the above-mentioned advantages of the thin display device For the purpose of implicitly appealing the technical advancement from the viewpoint of design design, a simple design in which the thin display device body is supported from the table stand base by only one column has been applied.

  However, recently, the viewing angle characteristics of the liquid crystal display screen have been remarkably improved, the need for the panning adjustment mechanism and the tilting adjustment mechanism constituted by complicated mechanisms has been reduced, and the display screen of the thin display device As the diagonal dimension exceeds 1 meter and the display screen size is further increased, the table stand struts are provided with two table stand struts in order to improve the substantial strength of the table stand struts and to give a visual sense of stability. The need to configure has arisen.

The “display device” described in Patent Document 1 has been proposed as an object of improving the structural strength accompanying the increase in the screen size. In this case, two reinforcing ribs are arranged in the longitudinal direction (horizontal direction) on the back surface of the frame chassis that supports the display panel from the back surface. Thereby, the rigidity in the longitudinal direction of the display device is increased.
JP 2003-29643 A

  If the structure of the above-mentioned “display device” is applied to a liquid crystal television that has recently been remarkably increased in size, and the large liquid crystal television is made to stand on its own by a two-leg table stand column, the overall thickness of the device is limited. Inevitably, the upper end of the table stand is connected to the lower end of the frame chassis of the liquid crystal television. However, when the table stand is simply connected to the lower end of the frame chassis, the weight of the entire large LCD TV is concentrated on the connection part, making the frame chassis unstable in strength. Separately, the connection part with the table stand A structure to reinforce it was necessary. SUMMARY OF THE INVENTION An object of the present invention is to propose a thin display device that can reinforce the chassis structure of a large, heavy thin display device and can be self-supported by a two-leg table stand column.

  In order to solve the above-mentioned problems, a thin display device of the present invention is a thin display device having a chassis in which a display member is disposed on the front surface and a unit for driving and controlling the display device is disposed on the rear surface. At least two reinforcing members are attached to the back surface of the thin film display device in parallel with each other in the vertical direction of the thin display device at an appropriate interval. Further, the thin display device of the present invention is a thin display device having a chassis in which a display member is disposed on the front surface and a unit for driving and controlling the display device is disposed on the rear surface. It is characterized in that at least two reinforcing members having the same axis in the thickness direction of the thin display device are attached to the shaft of the table stand column of the thin display device. Here, the cross-sectional shape of the reinforcing member is a shape in which a U-shape is continued in a wave shape. Further, a cross-sectional hat-shaped auxiliary metal fitting at the lower end of the reinforcing member, or both ends of the reinforcing member, or a reinforcing member having a cross-sectional hat shape having the same pitch as the pitch between the two reinforcing members at both ends. Auxiliary metal fittings having a mounting portion are fastened with screws, a column insertion space for a table stand is provided between the reinforcing member and the auxiliary metal fittings, and a two-legged table is detachable in the column insertion space. It is characterized in that a stand column is inserted. Further, the two-legged type table stand is characterized in that two support columns are erected on a single base plate, and an insertion portion into the support column insertion space is formed at the upper end of the support column. Further, a boss having a tapping process is fixed to the top of the auxiliary metal fitting, and the boss is used as a mounting seat for the wall hanging metal fitting. In these thin display devices, a reflective sheet is laid on the front surface of the chassis, a plurality of light source lamp tubes are arranged in parallel to the reflective sheet surface, and further, the plurality of light source lamp tubes are parallel to the reflective sheet surface. A liquid crystal display device is configured by arranging an optical sheet and a liquid crystal panel at an appropriate interval in front of the optical sheet.

  As described above, according to the present invention, two reinforcing members parallel to each other are attached to the back surface of the chassis in the vertical direction of the thin display device at an appropriate interval, thereby reinforcing the chassis and reducing the thickness. It is possible to cope with an increase in the size of the display device. In addition, a cross-section hat-shaped auxiliary metal fitting is fastened with screws at two places on both lower ends of the reinforcing member or on both upper and lower ends of the reinforcing member, and is formed in the vertical direction between the reinforcing member and the auxiliary metal fitting on the lower end. The cylindrical space to be used as an insertion hole at the upper end of a bipod type table stand column allows the upper end of the bipod type table stand column to be inserted and removed freely. It becomes. Further, the chassis rigidity can be further enhanced by integrating the auxiliary metal fittings having a cross-sectional hat shape as a pair of left and right. Furthermore, a hat-shaped auxiliary metal fitting is fastened to the upper and lower ends of both of the reinforcing members with screws, and a boss having a tapping process is secured to the top of the auxiliary metal fitting, and this boss is used as a mounting seat for the wall hanging metal fitting. Thus, even when the thin display device is increased in size, it is easy to attach the wall hanging bracket.

  Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an external view from the back side of a liquid crystal television when the present invention is applied to the liquid crystal television, and FIGS. 2 and 3 are schematic diagrams of the internal configuration of the liquid crystal television. In FIG. 1, reference numeral 102 denotes a rear cabinet, 104 denotes a speaker, and 105 denotes a two-legged table stand. Next, the internal configuration of the liquid crystal television will be described with reference to FIGS. The liquid crystal panel 100 is held by a holding bracket to constitute a liquid crystal panel unit 110, and an optical sheet 111 composed of a reflection / polarization sheet, a prism sheet, a diffusion sheet, a diffusion plate, and the like is held on a sheet holding angle 112 on the back side thereof. Has been.

  A reflection sheet 116 is fixed to the liquid crystal panel 100 side of the backlight chassis 117 by a lamp clip (not shown), and a plurality of pieces having both ends fixed by a lamp holder upper 113 and a lamp holder lower 114 are fixed to the front surface of the reflection sheet 116. A lamp 115 is arranged. As an assembling procedure of this portion, after fixing the reflection sheet 116 with a lamp clip to the liquid crystal panel 100 side of the backlight chassis 117, the lamp holder lower 114 is fixed to the backlight chassis 117 with the reflection sheet 116 interposed therebetween.

  Next, the lamp 115 is placed in a lamp fixing groove provided at a predetermined interval below the lamp holder 114 so that the left and right positions are aligned, and then the lamp holder upper 113 is positioned, and then both ends of the lamp 115 are covered. The light source portion is completed by fixing 113 and the lower lamp holder 114. Next, the sheet pressing angle 112 holding the optical sheet 111 is fixed to the backlight chassis 117 with screws, and then the liquid crystal panel unit 110 fixed to the front cabinet 101 and the backlight chassis 117 are fixed with screws. Thus, the display optical system of the liquid crystal television is completed with the front cabinet 101.

  The back surface of the backlight chassis 117 (the surface opposite to the liquid crystal panel 100) includes a drive circuit unit for the liquid crystal panel 100, a drive circuit unit for the lamp 115, a video and audio signal receiving circuit unit, a signal processing circuit unit, and the like. A unit for driving and various controls of the liquid crystal television is mounted, and the liquid crystal television unit constituted by these series of steps is covered with the rear cabinet 102 and fixed to the front cabinet 101 by screws, thereby completing the liquid crystal television main body. .

  Next, the structure of the connecting portion between the backlight chassis 117 and the two-legged table stand 105 will be described. FIG. 4 is a rear view of the backlight chassis 117 in a state where the rear cabinet 102 is removed from the main body of the liquid crystal television shown in FIG. FIG. 5 is also a rear view of the table stand 105 extracted from the liquid crystal television main body shown in FIG. 6 is an enlarged perspective view showing the lower end of the reinforcing member of FIG. FIG. 7 is a perspective view showing a single member of the reinforcing member of FIG. FIG. 8 is a perspective view showing a single piece of the auxiliary metal fitting of FIG.

  FIG. 9 is a perspective view showing a single base plate of the table stand 105 of FIG. FIG. 10 is a plan view of the bottom plate fastened to the lower surface of the base plate of FIG. FIG. 11 is a perspective view showing a single column of the table stand 105 of FIG. 12 is a cross-sectional view of the column of the table stand 105 of FIG. FIG. 13 is a rear view showing a single column insertion portion of the table stand 105 of FIG. FIG. 14 is a side view showing a single column insertion part of the table stand 105 of FIG. FIG. 15 is a front view showing a single column insertion portion of the table stand 105 of FIG. 16 is a plan view showing a single column insertion part of the table stand 105 of FIG.

  4 and 6, the backlight chassis 117 is formed of sheet metal, and two reinforcing members 11 are fastened by screws from the back side in a short direction at a position obtained by dividing the longitudinal direction into approximately three equal parts. As shown in FIG. 7, the reinforcing member 11 has a U-shaped continuous cross-sectional shape, and is formed by bending a metal plate or by extrusion of aluminum. An auxiliary metal fitting 12 having a hat-shaped cross section is fastened to the upper and lower ends of the reinforcing member 11 with screws 13. The portion that comes into contact with the auxiliary metal fitting 12 on the reinforcing member 11 side is a protruding top portion, and the tapped caulking boss 14 fixed to the backlight chassis 117 is located inside the top portion.

  Therefore, the auxiliary metal fitting 12 is also fastened to the backlight chassis 117 via the tapping caulking boss 14. As shown in FIGS. 6 and 8, the auxiliary metal fitting 12 has a tapped through caulking boss 15 fixed to the top, and the tapped through caulking boss 15 is a wall hanging metal fitting when the liquid crystal television is used on a wall. It becomes a screw hole to be attached, and a mounting seat for attaching the wall hanging bracket is formed. In actual assembly, since the rear cabinet 102 is covered above the auxiliary metal fitting 12, the wall hanging metal fitting is tapped through the caulking boss through four through holes formed at the position of the tapping through caulking boss 15 in the rear cabinet 102. 15 is screwed.

  Cylindrical through caulking bosses 16 and 17 that are one step lower than the tapping through caulking boss 15 are fixed to the top of the auxiliary metal fitting 12 adjacent to the tapping through caulking boss 15 in the vertical direction. This is because when an insertion portion 23 of a table stand 105 described later is inserted into a space 18 having a substantially square cross section formed between the auxiliary metal fitting 12 fastened to the lower end side of the reinforcing member 11 and the reinforcing member 11, It becomes a hole for screwing a screw into the female screw holes 31 and 32 of the insertion portion 23.

  In FIG. 5, the table stand 105 is configured such that two support columns 22 are erected on a single base plate 21, and an insertion portion 23 is connected to the upper end of the support column 22. As shown in FIG. 9, the base plate 21 is formed by molding into a shape in which the letter H is deformed. The bottom plate 24 shown in FIG. 10 is fastened to the lower surface of the base plate 21 with screws. 11 and 12 is inserted into the holes 25 formed on the left and right sides of the base plate 21, and screws are inserted through the through holes 26 of the bottom plate 24 to fasten the columns 22 to the bottom plate 24. . The support column 22 is formed by extrusion of aluminum. In FIG. 5, a hole 27 formed on the side surface of the support column 22 is a hole into which a screw for fixing the speaker 104 is inserted.

  An insertion portion 23 shown in FIGS. 13 to 16 is fastened to the upper end of the column 22 with screws. The insertion portion 23 has the same shape as the end face shape of the support column 22, and includes a flange portion 28 that comes into contact with the upper end surface of the support column 22, and a prismatic column portion 29 having a deformed hexagonal cross section protruding above the flange portion 28. And is formed by die casting such as aluminum. A prism portion 29 is inserted into the space 18 formed in FIG. 6, and the weight of the liquid crystal television main body is received and supported by the flange portion 28.

  In FIG. 13, female screw holes 31 and 32 are formed at two positions on the back side of the prismatic part 29, and after the prismatic part 29 is inserted into the space 18, And the table stand 105 and the backlight chassis 117 are integrated. In the assembly process of the factory, after the table stand 105 and the backlight chassis 117 are integrated, the rear cabinet 102 is attached to the back surface of the backlight chassis 117, so the auxiliary metal fitting 12, the reinforcing member 11, etc. are attached by the rear cabinet 102. Covered.

Next, a second embodiment of the present invention will be described with reference to FIGS. In the second embodiment, the auxiliary metal fittings 12 mounted on the two reinforcing members 11 provided in the short direction of the backlight chassis 117 in the first embodiment are arranged in a pair of left and right in the longitudinal direction of the liquid crystal television. The upper auxiliary metal fitting 210 and the lower auxiliary metal fitting 310 are attached to the reinforcing member 11 as the upper auxiliary metal fitting 210 and the lower auxiliary metal fitting 310. It is the explanation regarding the attachment of the metal fitting 310.

FIG. 17 is a rear view of the backlight chassis 417 with the rear cabinet 102 removed and the table stand 105 removed from the liquid crystal television main body shown in FIG. FIG. 18 is a perspective view of the upper reinforcing member. FIG. 19 is a perspective view of the lower reinforcing member. In FIG. 18, reference numeral 210 denotes an upper reinforcing member, 211 is a backlight chassis mounting surface, 212 is a boss caulking surface, 213 is a backlight chassis mounting hole, 214 is a cabinet mounting hole, 215 is a tapped through caulking boss, and 218 is a reinforcing member. It is a mounting surface. The pitch between the right and left tapping through caulking bosses 215 coincides with the pitch of the two laying reinforcing members 11, and the screw holes provided in the reinforcing member mounting surface 218 and the screw holes provided in the reinforcing member 11 are aligned. Then, it is fastened together with a caulking boss provided on the backlight chassis 417 with screws. In FIG. 19, 310 is a lower reinforcing member, 311 is a backlight chassis mounting surface, 312 is a boss caulking surface, 313 is a backlight chassis mounting hole, 314 is a cabinet mounting hole, 315 is a tapped through caulking boss, 316 and 317 Is a through caulking boss, and 318 is a reinforcing member mounting surface. The pitch between the right and left tapping through caulking bosses 315 matches the pitch of the two laying reinforcing members 11, and the screw holes provided in the reinforcing member mounting surface 318 and the screw holes provided in the reinforcing member 11 are aligned. Then, it is fastened together with a caulking boss provided on the backlight chassis 417 with screws. As shown in FIGS. 18 and 19, the upper auxiliary metal fitting 210 and the lower auxiliary metal fitting 310 are metal fittings in which both ends of a sheet metal are formed in a cross-sectional hat shape.

  In FIG. 17, the backlight chassis 417 is formed of sheet metal. As an assembly order, first, the two reinforcing members 11 are screwed from the back side with screws in the short direction of the position where the longitudinal direction is divided into approximately three equal parts. Conclude. As shown in FIG. 7, the reinforcing member 11 has a U-shaped continuous cross-sectional shape, and is formed by bending a metal plate or by extrusion of aluminum. Next, after the upper auxiliary metal fitting 210 and the lower auxiliary metal fitting 310 are aligned with the upper and lower ends of the two reinforcing members 11, the screw holes provided in the reinforcing member attachment surfaces 218 and 318 and the screws provided in the reinforcing member 11 are used. The holes are aligned and fastened to the tapping caulking boss provided on the backlight chassis 417 with screws. Next, the backlight shear assembly is completed by screwing the backlight chassis 417 with screws through the backlight chassis mounting holes 213 and 313. The cabinet mounting holes 214 and 314 are screw holes for fixing the rear cabinet 102.

Tap machining through caulking bosses 215 and 315 are fixed to the boss caulking surfaces 213 and 312 of the upper auxiliary metal fitting 210 and the lower auxiliary metal fitting 310, and the tap machining through caulking bosses 215 and 315 are used when the liquid crystal television is used on a wall. It becomes a screw hole for attaching the wall hanging bracket, and a mounting seat for attaching the wall hanging bracket is formed. In actual assembly, the rear cabinet 102 is covered above the upper auxiliary metal fitting 210 and the lower auxiliary metal fitting 310, and therefore, through the four through holes formed at the positions of the tapping through caulking bosses 215 and 315 in the rear cabinet 102. The wall-hanging metal fittings are screwed to the tapped through caulking bosses 215 and 315.

  Cylindrical through caulking bosses 316 and 317 that are one step lower than the tapping through caulking boss 315 are fixed to the upper side of the tapping through caulking boss 315 provided on the boss caulking surface 312 of the lower auxiliary metal fitting 310. This is because when the insertion portion 23 of the table stand 105 described later is inserted into a space having a substantially square cross section formed between the lower auxiliary metal fitting 310 fastened to the lower end side of the reinforcing member 11 and the reinforcing member 11, It becomes a hole for screwing a screw into the female screw holes 31 and 32 of the insertion portion 23.

  In the assembly process of the factory, since the rear cabinet 102 is attached to the back surface of the backlight chassis 417 after the table stand 105 and the backlight chassis 417 are integrated, the upper auxiliary metal fitting 210, the lower auxiliary metal fitting 310, the reinforcing member 11, etc. Is covered by the rear cabinet 102. As described above, the auxiliary metal fitting in the first embodiment is configured to be integrated on the left and right sides, and the center portion and both end portions of the auxiliary metal fitting are screw-fixed to the backlight chassis, so that the backlight chassis rigidity can be further enhanced. It becomes.

  As described above, when the liquid crystal television configured in the first and second embodiments is installed on the floor and is self-supported by the table stand, the backlight is provided by the table stand 105 as described above. The chassis 117, 417 can be used in a supported form. Here, when the user wants to change the liquid crystal television set on the floor to a wall hanging for the convenience of the user, the table stand 105 is removed by removing the four screws that are fastened to the backlight chassis 117, 417. The stand 105 can be removed.

  When the table stand 105 is removed, wall hanging metal fittings (not shown) can be attached to the four places of the tapping through caulking bosses 15 and 315 of the auxiliary metal fitting 12 and the lower auxiliary metal fitting 310 to be a wall hanging type. Similarly, when changing from wall-mounted to floor-mounted, it can be changed by attaching the table stand 105 and removing the wall-hanging bracket. As described above, the liquid crystal television of the present invention can be adapted to be either floor-mounted or wall-mounted according to the convenience and preference of the user. In addition, when the pitch of the mounting screw for the wall mounting bracket conforms to the standard such as the VESA standard, the mounting position of the auxiliary bracket is not always positioned at both ends of the reinforcing bracket, and the boss position for wall mounting is the standard pitch. The attachment position of the auxiliary metal fitting is also adjusted so as to match.

  The present invention can be used for a thin display device such as a PDP television having a chassis structure in addition to a liquid crystal display device such as a liquid crystal television having a backlight chassis.

It is an external view from the back side of the liquid crystal television which concerns on this invention. It is a perspective view which shows the internal structure of the liquid crystal television based on this invention. It is a perspective view which shows the internal structure of the liquid crystal television based on this invention. FIG. 2 is a rear view of the chassis in a state where the rear cabinet is removed from the liquid crystal television main body of FIG. 1 and the table stand is pulled out in the first embodiment. It is a rear view of the table stand extracted from the liquid crystal television main body which concerns on this invention. In 1st embodiment, it is an expansion perspective view of the lower end of the reinforcement member of FIG. It is a perspective view showing the simple substance of the reinforcing member concerning the present invention. It is a perspective view which shows the simple substance of the auxiliary metal fitting in 1st embodiment. It is a perspective view which shows the baseplate of the table stand concerning this invention alone. It is a top view of the baseplate fastened by the lower surface of the baseplate which concerns on this invention. It is the perspective view which showed the support | pillar of the table stand concerning this invention alone. It is sectional drawing of the support | pillar of the table stand which concerns on this invention. It is a rear view which shows the insertion part of the support | pillar of the table stand which concerns on this invention alone. It is a side view which shows the insertion part of the support | pillar of the table stand which concerns on this invention alone. It is a front view which shows the insertion part of the support | pillar of the table stand which concerns on this invention alone. It is a top view which shows the insertion part of the support | pillar of the table stand which concerns on this invention alone. In 2nd embodiment, the rear cabinet is removed from the liquid crystal television main body of FIG. 1, and the rear view of the chassis of the state which extracted the table stand. It is a perspective view which shows the single body of the upper auxiliary metal fitting in 2nd embodiment. It is a perspective view which shows the single body of the lower auxiliary | assistant metal fitting in 2nd embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Reinforcement member 12 Auxiliary metal fitting 13 Screw 14 Tap process caulking boss 15 Tap process caulking caulking boss 16, 17 Through caulking caulking boss 18 Space 21 Base plate 22 Strut 23 Insertion part 24 Bottom plate 25 Hole 26 Through hole 27 Hole 28 Flange part 29 Square pillar part 31, 32 Female thread Hole 100 Liquid crystal panel 101 Front cabinet 102 Rear cabinet 104 Speaker 105 Table stand 110 Liquid crystal panel unit 111 Optical sheet 112 Sheet presser angle 113 Lamp holder upper 114 Lamp holder lower 115 Lamp 116 Reflective sheet 117 Backlight chassis 210 Upper auxiliary metal fitting 310 Lower auxiliary Hardware 417 Backlight chassis

Claims (6)

A chassis having a display member disposed on the front surface and a unit for driving and controlling the display device disposed on the rear surface, and a plurality of reinforcing members on the rear surface of the chassis parallel to the axial direction of the column of the table stand In a thin display device attached with
At least two reinforcing members of the plurality of reinforcing members, or at both ends of at least two reinforcing members of the plurality of reinforcing members, a cross-sectional hat-shaped auxiliary metal fitting is fastened with screws, and the at least two A thin display device comprising a table stand support insertion space between the reinforcing member and the auxiliary metal fitting. The thin display device according to claim 1 ,
2. The thin display device according to claim 1, wherein the two auxiliary metal fittings have an integrated structure continuous with each other . The thin display device according to claim 1 or 2 ,
A thin display device, wherein a tapped boss is fixed to a top of the auxiliary metal fitting, and the boss is used as a mounting seat for a wall hanging metal fitting. The thin display device according to claim 1 ,
A thin display device, wherein a support of a two-legged type table stand is inserted into the support column insertion space in a removable manner. The thin display device according to claim 4 ,
The two-legged type table stand is a thin display device characterized in that two support columns are erected on a single base plate, and an insertion portion into the support column insertion space is formed at the upper end of the support column. Laying reflection sheet on the front of the chassis in the thin display apparatus according to any one of claims 1 to 5, wherein arranging a plurality of light source lamp tube parallel to the reflective sheet surface, further a parallel to the reflective sheet surface A liquid crystal display device, wherein an optical sheet and a liquid crystal panel are arranged in front of the plurality of light source lamp tubes at an appropriate interval in this order.

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