JP2004354569A - Video display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video display device of which display units are connected one above the other by means of a connecting tool can be easily assembled in the vertical direction. <P>SOLUTION: A rail mechanism 6 is arranged on the back of each of the display devices and the back of the display unit 1 is freely attachably and detachably provided with guide shoes 45 to be positioned and fitted to the rail mechanism 6 in order to connect a plurality of the box-shaped display units 1 in the vertical direction, a. A balancing mechanism 7 is built above the rail mechanism 6 and one end of a rope 72 is locked to a locking section 5 attached to the backs of the display unit 1 to hoist the display unit and the display unit 1 is fixed to the rail mechanism 6 by means of bolts 8. An operator is able to easily couple and fix the display units 1 in the vertical direction by the operation to hoist the display units 1 by means of the balancing mechanism 7. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an improvement in a video display device configured by connecting at least a plurality of display units in which a number of display elements are arranged on the front surface in a vertical direction.
[0002]
[Prior art]
A number of display elements such as LEDs (light-emitting diodes) are arranged on the exterior wall (billboard) of buildings facing indoor and outdoor stadiums, various event venues, downtown areas, etc. to form a display screen (display). Video display device is installed.
[0003]
These video display devices are permanently installed in the building itself, such as stadiums and buildings, or are assembled and used at event venues in various locations, or are used by being mounted on the carrier of large vehicles in a portable manner. Display for advertising, display of guidance to customers, display of television images to viewers, and the like are performed, and so-called full-color display can be performed by controlling lighting of R (red), G (green), and B (blue). There are many things to do.
[0004]
The image display device is assembled by connecting flat box-shaped display units vertically and horizontally to form a large screen, but forms a high quality display screen without distortion or deformation as a whole. Is required.
[0005]
If the display unit is light, a large screen can be formed with a small number. However, in a video display device or the like that actually uses an LED or the like as a display element, the weight of one display unit reaches about 80 kg, and it is not easy to form a large screen by stacking the display units.
[0006]
As shown in FIGS. 8 and 9, the display unit constituting the video display device includes a plurality of small display panels 11 (six in FIG. 8 and FIG. 9) in which a large number of LED display elements 11a are arranged in a matrix. It is configured with embedded arrangement.
[0007]
FIG. 8 is a partially exploded perspective view of the conventional display unit 1, and FIG. 9 is a perspective view of the display unit 1 shown in FIG.
[0008]
That is, in the display unit 1, a plurality of display panels 11 are fitted into a front frame 12, and the front frame 12 is connected and fixed to a rear frame 14 via a plurality of columns 13. Of the plurality of columns 13, an auxiliary column 13 a also serving as reinforcement is provided between the left and right columns 13 in the middle stage.
[0009]
A leg member 15 also serving as a connection for another lower display unit 1 connected below is fitted and fixed between the lowermost column 13 and the front frame 12 and the rear frame 14. .
[0010]
As shown in FIG. 9, the rear frame 14 includes a frame 141 and an opening / closing door 142 provided on the frame 141, and a control for driving and controlling the display element 11 a is provided inside the opening / closing door 142. The part 16 and the like are attached.
[0011]
In addition, a connecting tool 2 employing a so-called twisting operation mechanism is attached and fixed to the support 13, the auxiliary support 13 a, and the leg member 15 for connection with the counterpart display unit 1 connected vertically and horizontally.
[0012]
The connecting device 2 is configured such that the movable portion 21 and the locking portion 22 form a pair, and one of the movable portion 21 and the locking portion 22 is attached to one of the display units 1 to be connected. It is configured so that it can be fitted and removed between the left and right counterpart display units 1 and 1 (for example, see Patent Document 1).
[0013]
However, in the connection between the display units 1 and 1, instead of the connecting tool 2, a bolt and a nut or the like are used to position and fix the columns of the adjacent display units.
[0014]
FIG. 10 is a partial front view of a video display device in which a large number of display units 1 are connected vertically and horizontally by a connecting tool 2 to form a large screen.
[0015]
[Patent Document 1]
JP 2001-350434 A
[Problems to be solved by the invention]
As described above, the video display device is configured such that a connecting device is provided between display units, and adjacent display units are connected by the connecting device to form a large screen.
[0017]
The image display device is configured by connecting display units vertically and horizontally, but since one display unit weighs as much as 80 kg and is heavy, it is difficult for an operator to stack display units and connect them with high accuracy. It was not easy, and much work was required to assemble and disassemble the image display device, so that improvement was demanded.
[0018]
Therefore, an object of the present invention is to provide a video display device in which the display units can be easily connected particularly in the vertical direction.
[0019]
[Means for Solving the Problems]
In order to solve the above-mentioned conventional problems, the present invention provides a video display device in which a plurality of box-shaped display units having a large number of display elements arranged on a front surface are connected in a vertical direction via a connector. , A pair of guide mechanisms mounted on the left and right sides of the rear surface of the display unit so as to form a pair, and a rail mechanism configured to guide the guide mechanism and to support and fix the display unit at a predetermined height. A locking portion provided on the back surface of the display unit, and a fishing hook mechanism capable of lifting and moving the display unit guided by the rail mechanism by locking a rope or a chain at the locking portion. It is characterized by having.
[0020]
As described above, according to the image display device of the present invention, the guide mechanism is provided on the back of the display unit, and the display unit is lifted by the fishing support mechanism while guiding the guide mechanism along the rail mechanism, and displayed at a predetermined height position. Since the unit is configured to be supported and fixed to the rail mechanism, the operator can easily and accurately assemble and connect the display unit.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a video display device according to the present invention will be described in detail with reference to FIGS. Note that the same components as those of the conventional configuration shown in FIGS. 8 to 10 are denoted by the same reference numerals, and detailed description is omitted.
[0022]
FIG. 1 is a partially exploded perspective view showing an embodiment of the video display device of the present invention, and FIG. 2 is a perspective view of the video display device as viewed from the back. However, FIG. 2 shows only two display units connected in the vertical direction, and the other display units are omitted.
[0023]
As shown in FIGS. 1 and 2, each of the display units 1 connected in the up and down direction has a plurality of display elements 11 a such as LEDs (6 in this embodiment) arranged on the front surface of a housing 17. The display panel 11) is arranged in a built-in manner.
[0024]
In addition, a control unit for controlling the driving of the display element 11a is attached and fixed to the inner surface of the opening / closing door 17a shown in FIG.
[0025]
In order to connect the display units 1 in the up-down direction, connection pins 31 constituting the connection tool 3 are erected on the upper plate 171 of the housing 17, and the connection pins 31 are received, and the upper and lower display units 1, 1 are received. An engaging portion 32 that is detachably connected is incorporated in the bottom portion of the mating housing 17.
[0026]
The configuration and function of the connecting pin 31 and the locking portion 32 forming the connecting tool 3 are shown in an exploded perspective view shown in FIG. 3, an explanatory view of a fitting shape in the connecting tool 3 shown in FIG. 4, and FIG. A description will be given with reference to a side view of a relevant part of the connecting tool 3.
[0027]
As shown in FIG. 3, the connecting pin 31 provided on the upper plate 171 has a small-diameter portion formed by a groove 31a around the central axis.
[0028]
On the other hand, the locking portion 32 that is detachably connected to the connection pin 31 is incorporated inside the bottom plate 172 of the housing 17, and a through hole 172 a is formed in the bottom plate 172 where the connection pin 31 is inserted. ing.
[0029]
The locking portion 32 is composed of a frame 321 and a locking piece 322 incorporated in the frame 321 so as to be slidable in the horizontal direction. An insertable through hole 321a is provided.
[0030]
The locking piece 322 has a plate thickness that fits into the groove 31a formed in the connecting pin 31, and the locking piece 322 has a slightly smaller hole formed with a tapered portion so as to spread downward. A gourd-shaped locking hole 322a including the small-diameter hole and the large-diameter hole formed so as to be continuous in the sliding direction indicated by the arrow X is formed.
[0031]
That is, when the connecting pin 31 is inserted into the small-diameter hole of the locking hole 322a through the through hole 172a, the locking piece 322 guides the connecting pin 31 into the large-diameter hole while sliding. It is configured to penetrate the connection pin 31.
[0032]
Further, a pair of pins 322b are provided on the rear end surface (in the drawing, right hand direction) of the locking piece 322 in the sliding direction so as to protrude in the sliding direction, as shown in the drawing. It is configured to play.
[0033]
The pin 322b of the locking piece 322 is formed so that it can be freely inserted into the through hole 323a of the stopper plate 323 attached to the rear end face of the frame 321 with the coil spring 322c positioned inside the frame 321. I have.
[0034]
A cam 324 is rotatably attached to a support block 324b via a shaft 324a on the front end surface (in the left-hand direction in the figure) of the frame body 321. The cam 324 projects forward of the locking piece 322. The locking piece 322 is configured to act as a follower with respect to the original section of the cam 324 that rotates in contact with the projected portion 322d. One end of the shaft 324a is exposed on the back side of the display unit 1 (not shown), and the worker inserts a flat-blade screwdriver or the like into the slit 324aa formed at the exposed end of the shaft 324a. The cam 324 can be rotated.
[0035]
In FIG. 3, the frame 321 is fixed to the bottom plate 172 by bolts 321b and nuts 321c, the support block 324b is fixed to the frame 321 by screws 324c, and the stopper plate 323 is fixed to the frame 321 by screws 323b.
[0036]
With the configuration of the connecting member 3 described above, when the connecting pin 31 is inserted into the locking portion 32 through the through hole 172a, the connecting pin 31 slides the locking piece 322 backward while resisting the coil spring 322c. While entering.
[0037]
In this embodiment, as shown in FIG. 4, the relationship between the sharpened head shape of the connecting pin 31 and the tapered portion of the locking piece 322 that receives the connecting pin 31 is shown in FIG. The taper angle θ inclined from the vertical axis is about 27 degrees, and the angle α at the same tapered portion of the locking piece 322 is about 30 degrees. As a result, the connecting pin 31 can be smoothly inserted into the locking hole 322a of the locking piece 322 while resisting the coil spring 322c.
[0038]
If the angle α of the tapered portion of the locking piece 322 is set to about 30 degrees, and the taper angle θ of the connecting pin 31 is set to an angle smaller than 27 (for example, 25 degrees), the insertable area becomes narrower, so that the insertion operation is stabilized. If the taper angle θ is increased to more than 27 degrees (for example, 29 degrees), the required slippage at the time of insertion may not be obtained, and a stable fitting operation may not be obtained.
[0039]
In any case, when the connecting pin 31 is fitted into the locking portion 32, the locking piece 322 urged by the coil spring 322c is pushed forward, so that the locking piece 322 is inserted into the groove 31a of the connecting pin 31. The locking hole 322a of the small diameter portion is fitted and locked, and the upper and lower display units 1, 1 are connected and stabilized. FIG. 5A is a right side view showing a state in which the locking hole 322 a of the small diameter portion of the locking piece 322 is fitted into the groove 31 a of the connecting pin 31 and locked.
[0040]
Next, when the operator operates the shaft 324a to rotate the cam 324 90 degrees clockwise, the cam 324 slides the locking piece 322 backward while resisting the coil spring 322c. The connecting pin 31 shifts to the large diameter portion inside the stop hole 322a.
[0041]
As a result, the lower display unit 1 can be detached from the upper display unit 1 while pulling out the connecting pin 31 from the locking hole 42a. FIG. 5B is a right side view showing a state in which the connecting pin 31 is positioned at a large portion of the locking hole 322a by the 90-degree rotation of the cam 324, and the lower display unit can be detached from the upper display unit. FIG.
[0042]
As shown in FIG. 3, an R-shaped (rounded) concave portion is provided on the distal end surface of the protruding portion 322 d so that the protruding end portion of the rotated cam 324 can be fitted. In the pushing operation of the locking piece 322 by the cam 324 accompanying the turning operation of the cam 324 shown in ()), the protruding end of the cam 324 is stably fitted into the recess while resisting the coil spring 322c. Therefore, the operator can easily perform the operation of pulling out the connecting pin 31 from the locking portion 32 in a stable state.
[0043]
Further, in this embodiment, as shown in FIGS. 1 and 2, guide mechanisms 4 are incorporated at four positions on the back, top, bottom, left and right of each display unit 1.
[0044]
As shown in an enlarged exploded perspective view of FIG. 6, the guide mechanism 4 penetrates a bottomed cylindrical body 42 that houses a coil spring 41 and has an internal thread formed on an inner wall and a key-shaped hole 43 a in the axial direction. It is composed of an engagement screw 43 formed by this and a guide shoe 45 provided with a T-shaped arm 45a fitted to the engagement screw 43.
[0045]
The bottomed cylinder 42 is screwed into an engagement screw 43, and the engagement screw 43 is attached and fixed to a back plate of the display unit 1 by a nut 44.
[0046]
The guide shoe 45 is removably incorporated into the engagement screw 43, and a roller 45b that is guided and rotated by a rail mechanism described below is attached to one end of the arm 45a.
[0047]
At the rear end (the display unit 1 side) of the engagement screw 43, three slits 43b are formed at an interval of 45 degrees when viewed from the axial direction, and one of the T-shaped arms 45a is connected to a coil spring. When inserted into the hole 43a of the engagement screw 43 against the 41, the projection 45aa provided at the tip of the T-shaped arm 45a fits into one of the slits 43b while being urged by the coil spring 41. It is configured to be able to.
[0048]
In FIG. 6, reference numeral 41a denotes a spacer movably inserted between the coil spring 41 and the engagement screw 43, and reference numeral 44a denotes a nut 44 for attaching and fixing the engagement screw 43 to the display unit 1. It shows a spring washer (washer).
[0049]
Therefore, as shown in FIG. 6, when the guide shoe 45 is rotated in the direction of arrow R and inserted into the engagement screw 43 in the position shown by the dashed line in the drawing, the right side of FIG. As shown in the figure, the distal end of the inserted guide shoe 45 pushes the coil spring 41 so that the projection 45aa can be positioned outside (inside) the engagement screw 43.
[0050]
In this state, since the guide shoe 45 is urged forward by the coil spring 41, the guide shoe 45 is rotated 90 degrees in the direction opposite to the arrow R shown in FIG. 6 (ie, clockwise). This allows the projection 45aa to be fitted into one slit 43b and locked at the angle shown in FIG. 7B. In this embodiment, since the slit 43b is provided also at the intermediate angle position of 45 degrees, the guide shoe 45 is temporarily fixed to the display unit 1 at the intermediate point (45-degree inclined position) of the attaching / detaching operation of the guide shoe 45. Let it be.
[0051]
Next, in this embodiment, as shown in FIG. 2, screw holes 5a, 5a are provided in advance at the center upper and lower ends of the rear surface of the display unit 1, and the screw holes 5a are used for locking. The part 5 is configured to be detachable.
[0052]
Further, in this embodiment, as shown in FIGS. 1 and 2, a rail mechanism 6 having a pair of rails 61, 61 is provided corresponding to the mounting position of the guide shoe 45. The rail mechanism 6 incorporates a fishing support mechanism 7 in which a rope 72 is wound around a pulley 71, and a hook 72 a that can be locked to the locking portion 5 is connected to the tip of the rope 72.
[0053]
Therefore, in a state where the hook 72a is locked by the locking portion 5, the guide shoe 45 of the guide mechanism 4 is operated to bring the roller 45b into contact with the rail 61, and the other end of the rope 72 is pulled. The unit 1 can be lifted and moved along the rail 61.
[0054]
Therefore, in order to support and fix the suspended display unit 1 on the rail mechanism 6 at a predetermined height position, a vertically long through hole 61a is formed in the rail 61 in advance, and a U-shaped fixture on the back surface of the display unit 1 is provided. A nut is attached to the (bracket) 18, and the bolt 8 passing through the through-hole 61 a is screwed and fixed to the nut of the fixture 18.
[0055]
Therefore, when connecting the display unit 1 in the up-down direction, the worker first attaches the locking portion 5 to the display unit 1 sequentially from the display unit 1 positioned above → connection of the hook 72a and the locking portion 5. → Lifting of the display unit 1 by the rope 72 → Fixing the display unit 1 located at the predetermined height position with the bolts 8 allows the display unit 1 to be mounted and fixed at the predetermined height position.
[0056]
In the fixing operation of the display unit 1 by the bolt 8, since the through hole 61a of the rail 61 is formed slightly longer in the vertical direction, it is possible to absorb the error in the height dimension of the mounting position and mount and fix it with high accuracy. it can.
[0057]
Further, when the display unit 1 which is suspended and fixed first and the display unit 1 which is suspended and fixed next come into contact with each other, the upper and lower display units 1 and 1 are automatically coupled by the coupling 3 described above. .
[0058]
The above description has described the procedure for assembling the display unit 1, but the disassembled display unit 1 can be disassembled in the reverse order of the above description.
[0059]
However, when separating the upper and lower display units 1 and 1, the operator needs to operate the cam 324 of the connecting tool 3 using a driver or the like so that the connecting pin 31 can be separated from the locking portion 32. Needless to say.
[0060]
In the above-described embodiment, only two rails are shown in FIGS. 1 and 2 assuming that the display units 1 are stacked in a line in the vertical direction, but additional rails are provided in the left-right direction. The display unit 1 can be connected in the left-right direction as appropriate.
[0061]
That is, the connection mechanism of the display units 1 adjacent to each other in the left-right direction will be described with reference to FIGS. 1 and 2. It is constructed so that it can be worn freely.
[0062]
That is, the hooks 91 and the bar-shaped locking portions 92 are respectively configured and attached so that the coupling tools 9 and 9 form a hook joint with the counterpart display unit 1.
[0063]
Since the hook portion 91 is configured by attaching a hook to a rotating shaft having a hexagonal hole formed on an end face, as shown in FIG. Can be connected to or released from the mating locking portion 92.
[0064]
A handle 10 is provided at the center of the left and right side wall surfaces of the display unit 1 so that an operator can carry the display unit 1.
[0065]
In the above embodiment, the rail 61 of the rail mechanism 6 has a T-shaped cross section, but may have an H-shaped cross section. Further, in this embodiment, the roller 45b is provided on the guide shoe 45 to form a roller type guide shoe, but a sliding type guide shoe may be employed instead of the roller type.
[0066]
Furthermore, it has been described that the pulley 71 is used to wind the rope on the lifting portion of the fishing support mechanism 7. However, instead of the pulley 71, a so-called chain block using a chain is adopted, and the display unit is used. You may comprise so that it can be lifted easily.
[0067]
In any case, the video display device according to the present embodiment has a structure in which the guide mechanism and the locking portion are attached to the rear surface of the display unit to form a display screen by connecting the individual display units in the vertical direction. The unit is fixed through a fitting operation to the unit and a lifting operation of the unit by the fishing support mechanism, and then the lower display unit is similarly lifted and connected to and fixed to the upper display unit via a connector. Therefore, the operator can easily connect and fix the plurality of display units in the up-down direction.
[0068]
【The invention's effect】
According to the video display device of the present invention, a plurality of display units can be easily connected in the vertical direction, and can be assembled with high accuracy, and the effect obtained in practical use is large.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a main part showing an embodiment of a video display device according to the present invention.
FIG. 2 is a perspective view of a main part of the video display device shown in FIG. 1 as viewed from the rear side.
FIG. 3 is an exploded perspective view of the coupler shown in FIG. 1;
FIG. 4 is a front view illustrating a fitting shape of the connecting tool shown in FIG. 3;
5 (a) is a front view showing a state where the connecting pins of the connecting tool shown in FIG. 3 are fitted, and FIG. 5 (b) is a connecting pin of the connecting tool shown in FIG. It is the front view which showed the state which can be extracted.
FIG. 6 is an exploded perspective view of the guide mechanism shown in FIG.
7A is a right side view showing a state where an arm is inserted by the guide mechanism shown in FIG. 6, and FIG. 7B is a view showing a state where the arm is fitted and locked by the guide mechanism shown in FIG. 6; It is a right view which shows the state performed.
FIG. 8 is a perspective view of a display unit constituting a conventional video display device.
9 is a perspective view of the display unit shown in FIG. 8 as viewed from the back side.
FIG. 10 is a front view of a video display device connected by the display unit shown in FIG. 8;
[Explanation of symbols]
1 display unit 11 display panel 11a display element (LED)
17 Housing 3 Connecting tool 31 Connecting pin 32 Locking portion 322 Locking piece 322d Projecting portion 324 Cam 4 Guide mechanism 43 Engaging screw 45 Guide shoe 45b Roller 5 Locking portion 5a Screw hole 6 Rail mechanism 61 Rail 7 Fishing support mechanism 71 Pulley 71
72 Rope 72a Hook 8 Bolt 9 Connector 91 Hook 92 Engagement 10 Handle

Claims (4)

In a video display device configured by connecting a plurality of display elements in a box shape in which a large number of display elements are arranged on a front surface, and connecting a plurality of display elements in a vertical direction via a connector,
A guide mechanism attached to form a pair on the left and right sides of the back of the display unit,
A rail mechanism configured to guide the guide mechanism and to support and fix the display unit at a predetermined height position,
A locking portion provided on the back surface of the display unit,
A video display device, comprising: a hook or a chain capable of suspending the display unit guided by the rail mechanism by suspending a rope or a chain at the retaining portion. The image display device according to claim 1, wherein the guide mechanism is configured such that a guide shoe fitted to the rail mechanism is detachably attached to the display unit. The image display device according to claim 1, wherein the locking portion is configured to be detachable from the display unit. The image display device according to any one of claims 1 to 3, wherein the fishing support mechanism is configured by a chain block.

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