JP2008197446A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device usable according to all of the cases: where the shape of a display surface is made into a flat surface shape, where the shape is made into a curved surface shape and where the curvature of the curved display surface is changed. <P>SOLUTION: The display device includes at least a pair of first frames 2 which are arranged to face each other in parallel, at least a pair of second frames 3, 3a which have flexibility, are arranged in a direction orthogonal to the first frames 2, and are connected to the first frames 2, and a plurality of display element frames 4 to which a plurality of display elements 21 along a longitudinal direction are attached, which are arranged in parallel to the first frames 2 and are attached to the second frames 3, 3a. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a display device, and more particularly to a display device that forms a large screen by arranging a plurality of display elements such as LEDs.

  As often seen, indoor and outdoor stadiums, various event venues, and the outer wall surface (building board) of buildings are equipped with LED display devices in which a plurality of LEDs are arranged vertically and horizontally to form a display surface. ing.

  As an example of such an LED display device, one described in Patent Document 1 below is known. In the LED display device described in Patent Document 1 below, a plurality of long members are attached to an outer frame made of steel, and a plurality of LEDs are attached to the long member along the longitudinal direction. The plurality of long members are arranged in parallel to each other, and a gap is provided between adjacent long members.

Therefore, according to this LED display device, the overall weight can be reduced. Further, when this LED display device is used outdoors, the wind passes through the gaps between the long members, so that the wind pressure received by the LED display device can be greatly reduced.
JP 2003-316298 A

  However, in the LED display device described in Patent Document 1, the following points are not considered.

  Since the outer frame is made of steel, the outer shape of the LED display device is fixed. For this reason, in order to curve the display surface of the LED display device in a convex shape, a concave shape or a wavy shape, a curved outer frame must be prepared and a long member must be attached to the outer frame.

  Therefore, it is necessary to prepare a plurality of outer frames according to the shape of the display surface. For example, it is necessary to prepare an outer frame whose display surface is a flat surface, an outer frame whose display surface is a curved surface, and the like. Moreover, it is expected that the curvature of the display surface to be curved is different, and it is necessary to prepare a plurality of types of outer frames having different curvatures as the display frame.

  For this reason, it is necessary to manufacture many types of outer frames, which increases the manufacturing costs of the individual outer frames, and consequently increases the manufacturing costs of the individual LED display devices.

  Also, there may be no outer frame with the required curvature, in which case an outer frame with a curvature different from the desired curvature must be used.

  The present invention has been made to solve such problems, and its purpose is to change the curvature of the curved display surface when the display surface is flat or curved. Even if it is a case, it is providing the display apparatus which can be used corresponding to all those cases.

  According to an embodiment of the present invention, in the display device, at least a pair of first frames arranged in parallel and opposite to each other, a direction perpendicular to the first frame, and the first frame are connected. At least a pair of flexible second frames, a plurality of display elements attached along the longitudinal direction, and a plurality of display element frames arranged parallel to the first frame and attached to the second frame; Is.

  According to the present invention, when the display surface of the display device has a flat surface shape or a curved surface shape, and even when the curvature of the curved display surface is changed, all of these cases It is possible to provide a display device that can be used corresponding to the above.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 to 3, the LED display device 1 that is a display device includes a pair of long first frames 2 and three long second frames that are arranged to face each other in parallel. 3, 3a, a plurality of elongated display element frames 4, and one elongated reinforcing frame 5.

  The first frame 2 is a metal member and has a U-shaped cross section. One end of the first frame 2 in the longitudinal direction is provided with a first connecting portion 6 that is a connecting portion, and the other end of the first frame 2 in the longitudinal direction is provided with a second connecting portion 7 that is a connecting portion. ing. The first connecting portion 6 and the second connecting portion 7 are used when two LED display devices 1 are connected at a position along the longitudinal direction of the first frame 2. The 1st connection part 6 of 1 and the 2nd connection part 7 of the other LED display apparatus 1 are connected so that attachment or detachment is possible.

  As shown in FIG. 4, the first connecting portion 6 includes a hook 9 that is attached to the first frame 2 so as to be rotatable about a support shaft 8, and the hook 9 is connected to the first connecting portion 6 and the second connecting portion 7. And a tension spring 10 that is biased in the direction of rotation in the connecting direction. The hook 9 is formed with a handle portion 11 for turning the hook 9 and a stopper 12 for restricting the turning position of the hook 9.

  As shown in FIG. 5, the second connecting portion 7 includes a cam case 13 fixed to the first frame 2, a cam shaft 14 attached to the cam case 13, and attached to the cam shaft 14 so as to be integrated with the cam shaft 14. And an operating handle 15 that rotates. The cam shaft 14 is formed of a cylindrical shaft portion 14a and a cam portion 14b, and a convex eccentric portion 14c protruding from the other portion is formed on a part of the outer peripheral portion of the cam portion 14b. The cam case 13 has two plate-like members 13a facing each other in parallel, the cam shaft 14 is attached through the two plate-like members 13a, and the cam portion 14b is formed of the two plate-like members 13a. The operation handle 15 is disposed outside the one plate-like member 13a. Two engaging portions 15a and 15b are formed at the base portion of the operation handle 15, and one plate-like member 13a is engaged with one of the two engaging portions 15a and 15b at a specified rotational position. A spring 16 for restricting the rotation of the cam shaft 14 is attached.

  Further, a pair of third connecting portions 17 that are connecting portions are provided on the side surface portion of the first frame 2. This 3rd connection part 17 is used when arrange | positioning and connecting the two LED display apparatuses 1 in the position where the 1st flame | frame 2 adjoins in parallel. The 3rd connection part 17 is comprised by the hook part which is provided in one LED display device 1, and is rotatable, and the engaging part which is provided in the other LED device 1, and a hook part is engaged / disengaged.

  In addition, the first frame 2 is provided with a power supply control unit 18 for supplying power to the LED described later.

  The reinforcing frame 5 is a metal member, and is disposed in parallel with the pair of first frames 2 and at an intermediate position between the pair of first frames 2.

  The second frames 3, 3a are long members formed of a flexible material, for example, polycarbonate. The second frames 3 and 3 a are arranged in a direction orthogonal to the first frame 2, both ends in the longitudinal direction are bolted to the first frame 2, and an intermediate portion in the longitudinal direction is bolted to the reinforcing frame 5. . A plurality of signal distribution boards 19 are attached to the second frame 3a located at the center of the three second frames 3 and 3a to control the lighting state of the LEDs to be described later.

  The display element frame 4 is a long member formed of PBT resin, and is disposed in parallel with the first frame 2 and with a gap A between the adjacent first frames 2. Both ends in the longitudinal direction of the display element frame 4 are detachably attached to the second frames 3 and 3a.

  As shown in FIG. 6, the display element frame 4 is provided with a wiring board 20 extending in the longitudinal direction of the display element frame 4. A plurality of LEDs 21 which are display elements are attached to the wiring board 20, and these LEDs 21 are arranged along the longitudinal direction of the display element frame 4. These LEDs 21 are supplied with power from the power supply control unit 18 and are controlled to be turned on by the signal distribution board 19 to perform image display. The LED 21, the wiring board 20, the signal distribution board 19, and the power supply control unit 18 are waterproofed, and the LED display device 1 is configured to withstand outdoor use.

  As shown in FIGS. 6 and 7, attachment grooves 22 are formed at both ends in the longitudinal direction of the display element frame 4, and first attachment portions 23 having elasticity are detachably attached to the attachment grooves 22. . The first attachment portion 23 is a columnar member having a large-diameter base portion 23a and a head portion 23b, and rubber is used as a material. The head 23b is formed with a slit 23c that allows the head 23b to be deformed in the diameter reducing direction. The first mounting portion 23 is attached to the display element frame 4 by sliding the first mounting portion 23 in the lateral direction (the direction of arrow B shown in FIG. 7) and engaging the large-diameter base portion 23a with the mounting groove 22. Done.

  A mounting hole 24 as a second mounting portion is formed in the second frames 3 and 3a. The inner diameter of the mounting hole 24 is formed such that the head 23b whose diameter is reduced in the direction of reducing the gap of the slit 23c can be inserted, and the head 23b whose released diameter is released is prevented from coming off. The display element frame 4 is detachably attached to the second frames 3 and 3 a by engaging the head 23 b of the first attachment portion 23 attached to the display element frame 4 with the attachment hole 24.

  In such a configuration, the LED display device 1 is formed with the gap A between the adjacent display element frames 4, and thus can be reduced in weight even when the LED display device 1 becomes large.

  Further, since the gap A is formed between the adjacent display element frames 4, when the LED display device 1 is installed outdoors, the wind passes through the gap A even if wind blows. Thereby, the wind pressure which acts on LED display device 1 falls, the structural strength and attachment strength of LED display device 1 can be held down, and the cost of the device and construction can be kept down.

  As an installation state of the LED display device 1, when the display surface is installed so as to be a flat surface as shown in FIG. 1, or when the display surface is installed so as to be a curved surface as shown in FIG. Or, it may be installed so that the display surface has a wavy surface.

  The display surface of the LED display device 1 can be formed into a flat surface shape as shown in FIG. 1 by making the flexible second frames 3 and 3a straight, and the second frames 3 and 3a are curved. By doing so, a curved surface shape as shown in FIG. 8 can be obtained, and furthermore, a curved surface shape can be obtained by bending the second frames 3 and 3a in a plurality of stages.

  Therefore, although the LED display device 1 to be used has the same structure, the shape of the display surface can be variously changed in accordance with the installation location or the use situation of the LED display device 1, and one LED display device 1. Therefore, the manufacturing cost of the LED display device 1 can be kept low.

  When the shape of the display surface is curved by curving the second frames 3 and 3a, the LED display device 1 is fixed to a mounting member, a wall surface, a pillar, or the like with a bolt or the like while the display surface is curved. Then, the curved display surface shape is maintained.

  FIG. 8 shows an example in which the display surface is bent in the left-right direction. However, when the display surface is bent in the vertical direction, the mounting direction of the LED display device 1 is changed by 90 °. The second frames 3 and 3a may be installed so as to face in the vertical direction.

  The display element frame 4 is attached to the second frame 3 or 3a by engaging the elastic first attachment portion 23 attached to the display element frame 4 with the attachment hole 24 formed in the second frame 3 or 3a. Is done by letting For this reason, when the display element frame 4 is attached to and detached from the second frames 3 and 3a, or when the second frames 3 and 3a are bent, a load acting on the wiring board 20 of the display element frame 4 is applied to the first mounting portion 23. Therefore, it is possible to prevent the wiring board 20 from being damaged by a load acting on the wiring board 20.

  Since the display element frame 4 is detachably attached to the second frames 3 and 3a, the number of display element frames 4 to be attached can be changed as necessary. When the number of display element frames 4 attached to the LED display device 1 is increased, the image quality of the displayed image can be improved. On the other hand, when the number of display element frames 4 to be attached to the LED display device 1 is reduced, it is possible to produce an effect such that the back side of the LED display device 1 can be seen by turning off the LEDs 21.

  As the usage form of the LED display device 1, there are a case where one LED display device 1 is used alone and a case where two or more LED display devices 1 are connected in the vertical direction and the horizontal direction. In the case of using two or more LED display devices 1 connected in the vertical direction, a first connection portion 6 provided in the LED display device 1 and a second connection portion 7 provided in another LED display device 1 This is done by connecting

  This connection procedure will be described with reference to FIGS. First, one LED display device 1 is attached to the installation location, and another LED display device 1 is disposed on the lower side thereof. As shown in FIG. 9A, the second connecting portion 7 and the first connecting portion 6 Face each other in the vertical direction. Next, the lower LED display device 1 is lifted, and the hook 9 is inserted between the two plate-like members 13 a of the cam case 13. As the hook 9 enters between the plate-like members 13a, the outer peripheral side curved surface 9a of the hook 9 comes into contact with the outer peripheral surface of the cam portion 14b. When the lower LED display device 1 is subsequently lifted, the hook 9 rotates about the support shaft 8 in the direction of arrow C as shown in FIG. 9B. In this case, the cam shaft 14 is fixed at a position where the spring 16 is engaged with one of the engaging portions 15a and the convex eccentric portion 14c faces the horizontal direction.

  When the lower LED display device 1 is continuously lifted and the upper end portion of the first frame 2 of the lower LED display device 1 is brought into contact with the lower end portion of the first frame 2 of the upper LED display device 1, FIG. As shown in FIG. 10A, the hook 9 is rotated in the direction of the arrow C ′ by the urging force of the tension spring 10, and the stopper 12 returns to the original position where it abuts against the first frame 2. In this state, a gap D is generated between the inner inner peripheral surface 9b of the hook 9 and the upper outer peripheral surface of the cam portion 14b.

  When the force to lift the lower LED display device 1 is removed from the state shown in FIG. 10A, the lower LED display device 1 moves downward due to its own weight, and as shown in FIG. Is caught on the cam portion 14b. In this case, a gap E is generated between the upper end portion of the first frame 2 of the lower LED display device 1 and the lower end portion of the first frame 2 of the upper LED display device 1. The dimension of the gap E is substantially the same as the dimension of the gap D shown in FIG.

  The operating handle 15 of the cam shaft 14 is operated from the state shown in FIG. 10B, and the cam shaft 14 is rotated to a position where the convex eccentric portion 14c faces upward. By rotating the convex eccentric portion 14c to a position where the convex eccentric portion 14c faces upward, the hook 9 is pushed up by the convex eccentric portion 14c, and the lower LED display device 1 moves upward together with the hook 9, as shown in FIG. As described above, the upper end portion of the first frame 2 of the lower LED display device 1 and the lower end portion of the first frame 2 of the upper LED display device 1 come into contact with each other. Thereby, the connection state of the two LED display devices 1 connected in the up-down direction is stabilized, and wobbling at the connection portion is prevented. When the cam shaft 14 is rotated to a position where the convex eccentric portion 14 c faces upward, the spring 16 is engaged with the engaging portion 15 b formed on the base portion of the operation handle 15, and the cam shaft 14 rotates. Movement is regulated.

  When releasing the connection of the two LED display devices 1 connected in the vertical direction as shown in FIG. 11, the operation handle 15 of the cam shaft 14 is operated, and the convex eccentricity as shown in FIG. The cam shaft 14 is rotated to a position where the portion 14c is horizontal. Next, the lower LED display device 1 is lifted as shown in FIG. 10 (a), the handle portion 11 is gripped, and the hook 9 is rotated in the direction of arrow C as shown in FIG. 9 (b). 9 is disengaged from the camshaft 14. By releasing the engagement of the hook 9 with the camshaft 14, the connection between the upper and lower LED display devices 1 is released.

  When two LED display devices 1 are connected in the left-right direction, the third connection portion 17 provided on the first frame 2 of the LED display device 1 and the first frame 2 of another LED display device 1 are provided. The third connecting part 17 is used for connection.

It is a front view which shows the LED display apparatus which concerns on one embodiment of this invention. It is a top view of the LED display apparatus shown in FIG. It is a side view of the LED display apparatus shown in FIG. It is a side view which shows the 1st connection part provided in the upper end side of the 1st frame. It is a side view which shows the 2nd connection part provided in the lower end side of the 1st frame. It is sectional drawing which shows the attachment structure of the display element frame to a 2nd frame. It is a disassembled perspective view which shows the attachment structure of the 1st attachment part to a display element frame. It is a perspective view which shows the LED display apparatus which curved the 2nd frame and changed the display surface into the shape of a curved surface. It is a procedure figure in the case of connecting two LED display apparatuses in an up-down direction. It is a procedure figure in the case of connecting two LED display apparatuses in an up-down direction. It is a procedure figure in the case of connecting two LED display apparatuses in an up-down direction.

Explanation of symbols

2 1st frame 3, 3a 2nd frame 4 Display element frame 6 Connection part 7 Connection part 17 Connection part 19 Display element 21 1st attachment part 22 2nd attachment part

Claims (3)

At least a pair of first frames arranged to face each other in parallel;
A second frame having at least a pair of flexibility, disposed in a direction orthogonal to the first frame and connected to the first frame;
A plurality of display elements attached along the longitudinal direction, arranged in parallel with the first frame and attached to the second frame;
A display device comprising: A first mounting portion provided on the display element frame and having elasticity;
A second mounting portion provided on the second frame, to which the first mounting portion is detachably mounted;
The display device according to claim 1, further comprising:   The display device according to claim 1, wherein the first frame is provided with a connecting portion that is detachably connected to a connecting portion provided on the first frame of another display device. .

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