JP6832688B2 - Display device - Google Patents

Description

The present invention relates to a display device configured by arranging a plurality of display tiles, which are tile-shaped display panels in which a plurality of display elements such as LEDs (Light Emitting Diodes) are arranged in a square arrangement, in the vertical direction and the horizontal direction. Is.

Display tiles composed of a plurality of display elements such as LEDs are often used for outdoor and indoor advertisement display, etc., thanks to the technological development and cost reduction of the display elements. Until now, display devices equipped with display tiles have been mainly used for displaying natural images and moving images of animation. However, when it is used for indoor advertisement display, etc., the viewing distance becomes shorter as the pixel pitch becomes narrower. Therefore, a display device equipped with display tiles is used for displaying images on a personal computer such as a conference room or a monitoring application. Is also used. In particular, in surveillance applications, personal computer images that are close to still images are often displayed.

Further, as a display device provided with display tiles, an LED display element is mounted inside a cavity molded of ceramic or resin, and a small LED display module formed by solidifying the LED display element with a sealing resin is mounted on a substrate. The SMD (Surface Mount Device: surface mount component) type is the mainstream. The SMD type display device has been used as a large-scale image display device having a pixel pitch of 3 mm or more.

However, in recent years, against the background of cost reduction and high definition of LED display elements, a large-scale image in which a plurality of LED display devices composed of high-density mounting products having a pixel pitch of 1 to 2 mm are arranged in a tile shape. Display devices have been introduced to the market.

For example, Patent Document 1 and Patent Document 2 disclose components of an LED display device and a method for holding the same.

In Patent Document 1, the large-sized image display device is composed of a multi-display system composed of a plurality of LED display tiles. R, G, and B LED display elements are mounted on a small LED display module board up to the vicinity of the peripheral edge of the module board. A plurality of LED display module boards are assembled in a support structure so that the plurality of LED display module boards are arranged in a square array to form a first LED display tile. The second LED display tile is also assembled in a support structure like the first LED display tile. The first LED display tile and the second LED display tile are assembled in a support structure in a state of being substantially in close contact with each other while maintaining a very small gap. The same dimensions as the pixel pitch are required for this very small gap.

Further, in Patent Document 1 and Patent Document 2, the shape of the side surface of the LED display tile is processed into a flat shape. When a plurality of these LED display tiles are combined to form a large-screen image display device, the side surfaces of the LED display tiles are connected so as to be substantially in close contact with each other.

Further, Patent Document 3 discloses a structure in which LED display tiles are connected to each other by using a hook type connecting member.

U.S. Pat. No. 8,384,616 Chinese Patent No. 101937630 Chinese Patent No. 2036443333

The vertical and horizontal gaps between the LED display tile and the adjacent LED display tile, and the step in the front-rear direction of the LED display surface should be suppressed to the same dimensions as the pixel pitch so that these gaps and steps are not noticeable. Is required.

In Patent Document 1, each LED display tile is supported by a mounting structure so that its arrangement is not impaired. This mounting structure is arranged so that the gap between the LED display tile and the LED display tiles adjacent to each other in the vertical and horizontal directions has the same dimension as the pixel pitch. However, since the sides of the LED display tile are formed flat, other LEDs adjacent to the LED display tile may be due to mechanical precision such as dimensional tolerances or flatness of the support structure that holds the LED display tile. There was a problem that the gap with the display tile was scattered.

Further, in Patent Document 2, the LED display module substrate is attached to the LED base component, and the housing frame component and the joint component are attached to the back surface of the LED base component. The LED display tile composed of these members has a substantially flat side surface. In Patent Document 2, as in the case of Patent Document 1, when a plurality of LED display tiles are arranged in the vertical direction and the horizontal direction, there is a problem that the gap between the LED display tile and another adjacent LED display tile varies. It was.

Further, in Patent Document 3, since the LED display tiles are connected to each other by using a hook type connecting member, highly accurate alignment is required when connecting the LED display tiles to each other in the left-right direction. Therefore, there is a problem that it takes a considerable amount of time to align the LED display tiles.

As described above, in the structures described in Patent Documents 1 to 3, there are other structures adjacent to the LED display tiles due to variations in the processing dimensions of the structural parts of the metal housing constituting the LED display tiles, warpage of the LED display module substrate, or the like. There is a problem that a gap with the LED display tile and a step in the front-rear direction of the LED display surface are generated. Such gaps and steps are recognized as joints between the LED display tile and other adjacent LED display tiles due to changes in brightness or directivity, and the quality of the image deteriorates. It was a factor.

Therefore, an object of the present invention is to provide a display device capable of improving the quality of an image by easily making the joint between the display tile and another display tile adjacent to the display tile inconspicuous. ..

The display device according to the present invention is a display device configured by arranging a plurality of display tiles in which a plurality of display elements are arranged in the vertical direction and the horizontal direction, and a joint connected to the back surface of each display tile. The joint width between the frame unit holding the back surface of the plurality of display tiles and the display tile provided on the joint or the frame unit and between the display tile and the other adjacent display tiles is adjusted. The joint width adjusting mechanism includes a joint width adjusting mechanism, the joint width adjusting mechanism includes a second adjusting mechanism for adjusting the vertical or horizontal position of each display tile, and the second adjusting mechanism includes each of the display tiles and the said display tile. A position adjusting jig that can be attached to and detached from the frame unit is provided, and the position adjusting jig has a mounting hole and a fitting pin that can be fitted into the fitting hole provided in each display tile. The position adjusting jig is fixed to each display tile by fitting the fitting pin into the fitting hole, and is attached to the frame unit by a mounting screw loosely fitted in the mounting hole. By adjusting the position of the position adjusting jig in the vertical direction or the horizontal direction through the mounting hole, the position of each display tile in the vertical direction or the horizontal direction with respect to the frame unit is adjusted .

According to the present invention, since the display device is provided in the joint or the frame unit and includes a joint width adjusting mechanism for adjusting the joint width between the display tile and other adjacent display tiles, the joint width adjustment By adjusting the joint width by the mechanism, the joint between the display tile and another adjacent display tile can be easily made inconspicuous. Thereby, the quality of the image can be improved.

It is a perspective view of the LED display device which concerns on embodiment. It is an exploded perspective view of the LED display tile. It is a rear view of the LED display device in a state where the rear frame is removed. It is a rear perspective view of the LED display tile. It is a perspective view of the connection part of a frame and a joint. FIG. 3 is a cross-sectional view taken along the line AA of FIG. FIG. 3 is a cross-sectional view taken along the line BB of FIG. FIG. 6 is an enlarged view of part C in FIG. It is a front view of the connection part of the LED base and the rear frame unit. It is sectional drawing which shows the state before adjustment of the Z direction in the LED display tile. It is sectional drawing which shows the state which the bush is rotated by using the Z direction adjustment tool, and the Z direction is adjusted in the LED display tile. It is sectional drawing which shows the state which the joint is fixed to the LED base by rotating the connecting screw. It is a figure for demonstrating attachment / detachment of XY position adjustment jig with respect to LED display tile.

<Embodiment>
Embodiment 1 of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of the LED display device 200 according to the embodiment, and FIG. 2 is an exploded perspective view of the LED display tile 1f. FIG. 3 is a rear view of the LED display device with the rear frame 13 removed.

As shown in FIG. 1, the LED display device 200 as a display device includes a plurality of display tiles 1a to 1r, a joint 10, a rear frame unit 2, and a gantry 3. Further, the LED display device 200 further includes a joint width adjusting mechanism for adjusting the joint width between the LED display tile and another adjacent LED display tile.

The LED display device 200 is configured by arranging, for example, 18 display tiles 1a to 1r on the gantry 3 in the vertical direction and the horizontal direction. More specifically, three display tiles 1a to 1r are arranged in the vertical direction and six in the horizontal direction. Since the 18 LED display tiles 1a to 1r have the same configuration, the LED display tile 1f will be described here.

As shown in FIG. 2, the LED display tile 1f includes four LED module substrates 5 and an LED base 6. Two of the four LED module boards 5 are arranged in the vertical direction and two in the horizontal direction. A plurality of LEDs as display elements are arranged in a square array on each of the four LED module substrates 5. The LED base 6 is fixed to the back surface of the four LED module boards 5. The four LED module boards 5 are accurately positioned with respect to the LED base 6, and are arranged and fixed so that the seam between the LED module board 5 and the adjacent LED module board 5 is inconspicuous.

The rear frame unit 2 is connected to the back surface of the LED display tiles 1a to 1r, more specifically, to the back surface of the LED base 6 via a plurality of joints 10 to hold the back surface of the LED display tiles 1a to 1r. The rear frame unit 2 is configured by assembling two rear frames 12 and 13 having a rectangular frame shape in the front-rear direction. The back frame 12 and the back frame 13 are fixed by a plurality of frames 12e extending in the front-rear direction (hereinafter, also referred to as “Z direction”). The frame 12e is arranged at a position corresponding to the four corners of the display tiles 1a to 1r.

Next, the back frame 12 will be described. As shown in FIGS. 1 to 3, the rear frame 12 is a front frame, and has 12 frames 12a extending in the left-right direction (hereinafter, also referred to as “X direction”) and 12 frames 12d extending in the X direction. , Five frames 12b extending in the vertical direction (hereinafter, also referred to as "Y direction"), and two 12c extending in the Y direction. The two frames 12c form a left end portion and a right end portion of the back frame 12, respectively. The five frames 12b are arranged between the LED display tile and the other LED display tiles adjacent to each other in the X direction.

The 12 frames 12a form an upper end portion and a lower end portion of the back frame 12. More specifically, the 12 frames 12a correspond to the upper ends of the LED display tiles 1a to 1f and the lower ends of the LED display tiles 1m to 1r in the two frames 12c and the five frames 12b. Each is connected to a position. The twelve frames 12d are arranged between the LED display tile and other LED display tiles adjacent to each other in the Y direction.

Next, the back frame 13 will be described. The rear frame 13 is a rear frame, which includes twelve frames 13a extending in the X direction, twelve frames 13d extending in the X direction, five frames 13b extending in the Y direction, and two frames extending in the Y direction. It has 13c. The two frames 13c form a left end portion and a right end portion of the back frame 13, respectively. The five frames 13b are arranged between the LED display tile and the other LED display tiles adjacent to each other in the X direction.

The twelve frames 13a form an upper end portion and a lower end portion of the back frame 13. More specifically, the 12 frames 13a correspond to the upper ends of the LED display tiles 1a to 1f and the lower ends of the LED display tiles 1m to 1r in the two frames 13c and the five frames 13b. Each is connected to a position. The twelve frames 13d are arranged between the LED display tile and other LED display tiles adjacent to each other in the Y direction.

Further, although the LED display drive circuit, the power supply, and the like are housed inside the LED base 6, the details thereof will be omitted because the configuration is the same as the conventional configuration.

By adopting a configuration in which the LED module board 5 is self-supporting by the LED base 6 and the rear frame unit 2, the depth of the LED base 6 is increased without providing the rear frame unit 2, and only the external dimensional accuracy of the LED base 6 is achieved. The LED base 6 can be miniaturized as compared with the conventional configuration in which the LED module substrate 5 is made to stand on its own. This makes it possible to improve the external dimensional accuracy of the LED base 6 and reduce the weight.

Further, since the rear frame unit 2 is an assembly type, distortion and assembly error of individual frames can be corrected at the time of assembling the rear frame unit 2. This makes it possible to suppress the processing cost of the LED base 6.

As shown in FIG. 3, the back frame 12 of the back frame unit 2 is connected by a plurality of joints 10. More specifically, the plurality of joints 10 are arranged at positions corresponding to the four corners of the LED display tiles 1a to 1f, respectively, and the frame 12c and the frame 12a, the frame 12c and the frame 12d, and the frame 12b and the frame 12a. , And the frame 12b and the frame 12d are connected by using screws 110, respectively.

Further, the back frame 12 of the back frame unit 2 is connected to the back of the LED display tiles 1a to 1r by using a plurality of connecting screws 100. The connection method will be described later. An XY position adjusting jig 50 is attached to the back frame 12 on the back surface of the LED display tile 1e. The rear frame unit 2 can be inexpensively configured by using a plurality of frames having different lengths, such as an extruded frame having the same cross section.

FIG. 4 is a rear perspective view of the LED display tile 1f. FIG. 5 is a perspective view of a connecting portion between the frame 12d, the frame 12b, and the joint 10. 6 is a cross-sectional view taken along the line AA of FIG. 3, and FIG. 7 is a cross-sectional view taken along the line BB of FIG. Here, since the 18 LED display tiles 1a to 1r have the same configuration, the LED display tiles 1f will be described here.

As shown in FIGS. 4 and 5, bosses 8 with female screw holes are provided at the four corners of the LED base 6 constituting the back surface of the LED display tile 1f. Further, in the lower part of the LED base 6, three fitting holes 7 that can be fitted with the fitting pin 51 of the XY position adjusting jig 50 are provided.

The structure of the joint 10 is slightly different between those fixed to the lower corner of the LED display tile 1f and those fixed to the upper corner of the LED display tile 1f. The joint 10 fixed to the lower corner of the LED display tile 1f is composed of a bottom surface 10a, a front surface 10b, and a side surface 10c, and the upper, rear, and one side are formed in an open shape. There is. The joint 10 used in the lower corner of the LED display tile 1f is further fitted with a screw hole 104 into which a boss 8 with a female screw hole provided in the LED display tile 1f can be fitted, and a screw 110. It is provided with two fixing holes 11. The screw hole 104 is provided in the front surface portion 10b. Two of the three fixing holes 11 are provided on the bottom surface portion 10a, and one is provided on the side surface portion 10c.

As shown in FIGS. 6 and 7, the joint 10 fixed to the upper corner of the LED display tile 1f is composed of an upper surface portion 10d, a front surface portion 10b, and a side surface portion 10c, and is composed of a lower surface portion, a rear portion, and one of the joint portions. The sides are formed in an open shape. The joint 10 used in the upper corner of the LED display tile 1f also has a screw hole 104 into which a boss 8 with a female screw hole provided in the LED display tile 1f can be loosely fitted, and three screws 110 to which the screw 110 can be attached. A fixing hole 11 is provided. The screw hole 104 is provided in the front surface portion 10b. Two of the three fixing holes 11 are provided on the upper surface portion 10d, and one is provided on the side surface portion 10c.

Hereinafter, when there is no distinction between the joint 10 fixed to the lower corner of the LED display tile 1f and the joint 10 fixed to the upper corner of the LED display tile 1f, it is simply referred to as the joint 10.

As shown in FIGS. 4 and 5, in the connecting portion between the frame 12d, the frame 12b, and the joint 10, the screw 110 is a nut fixed to the groove of the frame 12b and the frame 12d via the fixing hole 11 of the joint 10. It is connected by screwing it into 111.

As shown in FIG. 7, the fitting pin 51 of the XY direction position adjusting jig 50 is guided and inserted into the fitting hole 7 provided on the back surface of the LED display tile 1e. The XY direction position adjusting jig 50 is a jig for adjusting the position of the LED display tile 1e in the XY direction, that is, in the left-right direction and the up-down direction. The XY direction position adjusting jig 50 is detachably configured on the back frame unit 2 and is sequentially used for the LED display tiles 1a to 1r when assembling the LED display tiles 1a to 1r. Therefore, the LED display tiles 1a to 1r do not need to be provided with a mechanism for adjusting the positions in the left-right direction and the up-down direction, and have a simple structure and are reduced in weight. The details of the XY direction position adjusting jig 50 will be described later.

Next, with reference to FIGS. 8 to 12, a first adjustment mechanism for adjusting the positions of the LED display tiles 1a to 1r in the Z direction will be described. FIG. 8 is an enlarged view of part C of FIG. FIG. 9 is a front view of the connecting portion between the LED base 6 and the rear frame unit 2. FIG. 10 is a cross-sectional view showing a state of the LED display tile 1e before adjustment in the Z direction. FIG. 11 is a cross-sectional view showing a state in which the bush 102 with a male screw is rotated by using the Z direction adjusting tool 300 to adjust the LED display tile 1e in the Z direction. FIG. 12 is a cross-sectional view showing a state in which the joint 10 is fixed to the LED base 6 by rotating the connecting screw 100.

The joint width adjusting mechanism includes a first adjusting mechanism that adjusts the positions of the LED display tiles 1a to 1r in the Z direction, and the X and Y directions (hereinafter, "XY directions") of the LED display tiles 1a to 1r. It is equipped with a second adjustment mechanism that adjusts the position of).

As shown in FIGS. 8 and 9, the first adjusting mechanism includes a bush 102 with a male screw. The bush 102 with a male screw is configured to be screwable into the screw hole 104 of the joint 10. The male-threaded bush 102 is screwed into the screw hole 104 of the joint 10, and the female-threaded boss 8 is inserted into the male-threaded bush 102. In this state, the joint 10 is connected to the LED display tile 1e by screwing the connecting screw 100 to the boss 8 with a female screw hole via the washer 101. As a result, the LED display tile 1e is temporarily fixed.

As shown in FIG. 9, for example, six adjusting pin insertion holes 105 are provided at the rear end of the male screwed bush 102. The six adjusting pin insertion holes 105 are provided so as to face each other by three.

Two elongated holes 106 formed in an arc shape are provided on the circumference of the washer 101. The two elongated holes 106 are provided at positions facing each other and at positions where three adjusting pin insertion holes 105 are exposed.

Next, the adjustment allowance of the LED display tile 1e will be described. As shown in FIG. 8, the dimensions a and b are adjustment allowances in the Z direction of the LED display tile 1e, and the dimensions a and b can be increased by loosening the connecting screw 100. Further, (φd−φc) / 2 is an adjustment allowance in the XY directions in the LED display tile 1e. Here, φd is the inner diameter of the bush 102 with a male screw, and φc is the outer diameter of the boss 8 with a female screw hole. That is, (φd−φc) / 2 is the dimension of the gap between the bush 102 with a male screw and the boss 8 with a female screw hole. The dimensional relationship described here is the same for the four corners of the LED display tile 1e.

Next, a method of adjusting the position of the LED display tile 1e in the Z direction will be described. First, the Z direction adjusting tool 300 will be described. As shown in FIG. 10, the Z direction adjusting tool 300 includes a main body portion 303, a recess 302, two pins 301, and a handle 304. The main body 303 is formed in a rectangular parallelepiped shape, for example, and a recess 302 capable of accommodating the head of the connecting screw 100 is provided in a region excluding the peripheral edge of the main surface of the main body 303. Two pins 301 are provided on the peripheral edge of the main surface of the main body 303. The two pins 301 can be inserted into two of the six adjusting pin insertion holes 105, respectively. The handle 304 is provided on a surface of the main body 303 opposite to the main surface.

As shown in FIG. 10, in the default position, which is the position before adjustment in the Z direction, first, the screw 100 is loosened so that the tip portion of the bush 102 with a male screw is aligned with the front surface of the front surface portion 10b of the joint 10. ..

Next, as shown in FIG. 11, the two pins 301 of the Z-direction adjusting tool 300 are inserted into the adjusting pin insertion holes 105 of the male-threaded bush 102 via the elongated holes 106 of the washer 101. Then, by rotating the Z direction adjusting tool 300, the bush 102 with a male screw is rotated, and the LED display tile 1e is adjusted so as to move in the Z direction.

Since the Z-direction adjusting tool 300 can be rotated within the range of the elongated holes 106 formed in an arc shape, the rotation range of the Z-direction adjusting tool 300 is limited. Therefore, when the adjustment pin insertion hole 105 moves to the end of the long hole 106, the pin 301 of the Z direction adjustment tool 300 is reinserted into the adjustment pin insertion hole 105 located at the opposite end of the long hole 106, and the male is inserted. The position of the LED display tile 1e in the Z direction is adjusted by rotating the screwed bush 102. When the position of the LED display tile 1e in the Z direction is determined by this adjustment, the LED display tile 1e is fixed by rotating the connecting screw 100 in the fixing direction as shown in FIG.

With the above configuration, the connection mechanism between the LED display tiles 1a to 1r and the rear frame unit 2 and the first adjustment mechanism for adjusting the positions of the LED display tiles 1a to 1r in the Z direction have a simple structure. And it can be configured compactly. Further, it is possible to accurately adjust the step in the Z direction of the LED display surface, that is, the joint width, which is a deviation in the Z direction between the LED display tile and another adjacent LED display tile.

Next, a second adjustment mechanism for adjusting the positions of the LED display tiles 1a to 1r in the XY directions will be described. FIG. 13 is a diagram for explaining attachment / detachment of the XY position adjusting jig 50 to / from the LED display tile 1e.

The second adjusting mechanism includes an XY position adjusting jig 50. As shown in FIG. 13, the XY position adjusting jig 50 includes a plate 52, four mounting holes 53, and three fitting pins 51. The plate 52 is composed of two plates 52a and 52b, and the plate 52b is fixed to the main surface of the plate 52a. Two mounting holes 53 are provided at both ends of the plate 52a.

Three fitting pins 51 are provided on the main surface of the plate 52b. The three fitting pins 51 are provided at positions corresponding to the three fitting holes 7 of the LED display tile 1e, and can be inserted into the three fitting holes 7, respectively. The four mounting holes 53 are provided at positions corresponding to the four nuts 111 provided in the grooves of the frame 12b. The XY position adjusting jig 50 is attached to the rear frame unit 2 by screwing the four mounting screws 112 into the four nuts 111 via the four mounting holes 53, respectively. The four nuts 111 are fixed to the grooves of the two frames 12b, two each.

The diameter of the four mounting holes 53 is formed to be larger than the diameter of the shaft portion of the four mounting screws 112 so as to include the adjustment allowance in the XY directions in the LED display tile 1e. Therefore, the four mounting screws 112 are loosely fitted into the four mounting holes 53, respectively.

The XY position adjusting jig 50 is fixed to the LED display tile 1e by fitting the three fitting pins 51 into the three fitting holes 7 of the LED display tile 1e. Further, the XY position adjusting jig 50 is attached to the four nuts 111 of the rear frame unit 2 by the mounting screws 112 loosely fitted in the four mounting holes 53. The XY position adjusting jig 50 can be moved in the X direction and the Y direction within the range of the adjustment allowance of the LED display tile 1e in the four mounting holes 53.

The four mounting screws 112 are screwed into the four nuts 111 provided in the grooves of the frame 12b via the four mounting holes 53 of the XY position adjusting jig 50, respectively. Further, since the three fitting pins 51 of the XY position adjusting jig 50 are fitted into the three fitting holes 7 of the LED display tile 1e, the four XY position adjusting jigs 50 are attached. When the LED display tile 1e in the hole 53 is moved in the X direction or the Y direction within the adjustment allowance range, the LED display tile 1e also moves in the X direction or the Y direction with respect to the frame 12b. As a result, the position of the LED display tile 1e in the XY directions can be adjusted.

When adjusting the position in the XY directions after installing the LED display tiles 1a to 1r, attach the XY position adjustment jig 50 to the LED display tile to be adjusted and loosen the connecting screw 100 to adjust the position in the XY direction. The position of the can be adjusted.

The order of position adjustment is to loosen the connecting screws 100 at the four corners of the LED display tile to be adjusted and adjust to the default position shown in FIG. The XY position adjusting jig 50 is attached to the back frame unit 2 of the LED display tile to be adjusted to adjust the position in the XY direction. Next, using the Z-direction adjusting tool 300, the position of the front corner of the LED display tile to be adjusted in the Z direction is set to the front corner of another LED display tile adjacent to the LED display tile to be adjusted. Adjust so that it matches the position in the Z direction.

After the adjustment is completed, the LED display tile to be adjusted and the joint 10 are fixed with the screw 110. In the example shown in FIG. 1, the LED display tiles are sequentially adjusted in the order of 1o, 1p, 1n, 1q, 1i, 1j ..., And other LED display tiles radially adjacent to each other from the lower center. ..

In the embodiment, the LED display device 200 having an 18-sided configuration has been described as an example, but the same assembly adjustment can be performed in the case of the LED display device including a larger number of LED display tiles. ..

As described above, the LED display device 200 according to the embodiment is provided in the joint 10 or the rear frame unit 2 and adjusts the joint width between the LED display tile and another adjacent LED display tile. Since the joint width adjusting mechanism is provided, the joint width between the LED display tile and another adjacent LED display tile can be easily made inconspicuous by adjusting the joint width by the joint width adjusting mechanism. Thereby, the quality of the image can be improved.

The joint width adjusting mechanism includes a first adjusting mechanism for adjusting the position of each LED display tile in the Z direction, and the first adjusting mechanism includes a bush 102 with a male screw that can be screwed into the screw hole 104 of the joint 10. The bush 102 with a male screw is configured so that a boss 8 with a female screw hole provided in each LED display tile can be inserted, and the joint 10 has a bush 102 with a male screw screwed into the screw hole 104 and a female screw. Each LED display is connected to each LED display tile by a connecting screw 100 screwed into the female screw hole boss 8 with the hole boss 8 inserted into the male screw bush 102, and each LED display is connected to each LED display tile via the male screw bush 102. By adjusting the gap between the tile and the joint 10, the position of each LED display tile in the Z direction is adjusted.

Therefore, it is possible to accurately and easily adjust the step in the Z direction of the LED display surface, that is, the joint width, which is the deviation in the Z direction between the LED display tile and the other adjacent display tiles.

Further, since the LED display tiles 1a to 1r do not need to be provided with a mechanism for adjusting the position in the Z direction, the LED display tiles 1a to 1r can be compactly configured. Along with this, the weight of the LED base 6 can be reduced, so that the LED display tiles 1a to 1r can be easily handled.

Further, since the depth of the LED base 6 is small and the shape is simple, it is possible to reduce the cost of the parts constituting the LED display tiles 1a to 1r. As a result, the manufacturing cost of the LED display device 200 can be reduced.

The joint width adjusting mechanism includes a second adjusting mechanism for adjusting the position of each LED display tile 1a to 1r in the X direction or the Y direction, and the second adjusting mechanism is attached to each LED display tile 1a to 1r and the rear frame unit 2. On the other hand, a detachable XY position adjusting jig 50 is provided, and the XY position adjusting jig 50 can be fitted into the mounting holes 53 and the fitting holes 7 provided in the LED display tiles 1a to 1r. The XY position adjusting jig 50 is fixed to each LED display tile 1a to 1r by fitting the fitting pin 51 into the fitting hole 7, and has a mounting hole. The rear frame unit 2 is attached to the rear frame unit 2 by the mounting screw 112 loosely fitted to the 53, and the position of the XY position adjusting jig 50 in the X direction or the Y direction is adjusted through the mounting hole 53. The position of each LED display tile 1a to 1r with respect to the X direction or the Y direction is adjusted.

Therefore, it is possible to accurately and easily adjust the gap, that is, the joint width, which is a deviation in the X direction or the Y direction between the LED display tile and another adjacent display tile.

Further, since the LED display tiles 1a to 1r do not need to be provided with a mechanism for adjusting the position in the X direction or the Y direction, the LED display tiles 1a to 1r can be compactly configured. Along with this, the weight of the LED base 6 can be reduced, so that the LED display tiles 1a to 1r can be easily handled.

With respect to the position adjustment in the X direction or the Y direction, the LED base 6 only needs to be provided with the fitting hole 7, so that the structure of the LED base 6 is simplified. Since the XY position adjusting jig 50 can be attached to and detached from each of the LED display tiles 1a to 1r and the rear frame unit 2, the LED display device 200 needs only one XY position adjusting jig 50. Well, the manufacturing cost of the LED display device 200 can be reduced.

In the present invention, the embodiments can be appropriately modified or omitted within the scope of the invention.

1a ~ 1r LED display tile, 2 rear frame unit, 7 fitting hole, 8 boss with female screw hole, 10 joint, 50 XY position adjustment jig, 51 fitting pin, 53 mounting hole, 100 connecting screw, 102 Bush with male screw, 104 screw holes, 112 mounting screws, 200 LED display device.

Claims (2)

It is a display device configured by arranging a plurality of display tiles in which a plurality of display elements are arranged in the vertical direction and the horizontal direction.
A frame unit that holds the back surfaces of the plurality of display tiles via joints connected to the back surface of each display tile.
A joint width adjusting mechanism provided in the joint or the frame unit and adjusting the joint width between the display tile and another adjacent display tile.
Equipped with a,
The joint width adjusting mechanism includes a second adjusting mechanism that adjusts the vertical or horizontal position of each display tile.
The second adjusting mechanism includes a position adjusting jig that can be attached to and detached from each display tile and the frame unit.
The position adjusting jig has a mounting hole and a fitting pin that can be fitted into the fitting hole provided in each display tile.
The position adjusting jig is fixed to each display tile by fitting the fitting pin into the fitting hole, and is attached to the frame unit by a mounting screw loosely fitted in the mounting hole.
A display device that adjusts the vertical or horizontal position of each display tile with respect to the frame unit by adjusting the vertical or horizontal position of the position adjusting jig through the mounting holes. The joint width adjusting mechanism includes a first adjusting mechanism for adjusting the position of each display tile in the front-rear direction.
The first adjusting mechanism includes a bush that can be screwed into the screw hole of the joint.
The bush is configured so that a boss provided on each display tile can be inserted.
The joint is connected to each display tile by a connecting screw screwed into the boss with the bush screwed into the screw hole and the boss inserted into the bush.
The display device according to claim 1, wherein the position of each display tile in the front-rear direction is adjusted by adjusting the gap between each display tile and the joint via the bush.

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