KR20090011537U - Light emitting diode display apparatus - Google Patents

Abstract

The present invention relates to an LED display device, comprising: an LED display device used to form a large screen by arranging a plurality of LED display devices; A plurality of support frames coupled to a rear edge portion of the LED display panel and having insertion grooves formed therein for inserting connection members; At least one support frame is disposed at a position moved inwardly from an end portion of the rear surface of the LED display panel so as to be spaced apart from the support frame of the LED display device disposed laterally when arranging a plurality of LED display devices. ; When a plurality of LED display devices are arranged in series and connected to each other, the coupling portion is coupled to the insertion groove of the support frame of one LED display device and the insertion groove of the support frame of the other LED display device adjacent to the support frame, respectively. Provided is an LED display device in which the LED display devices are connected to each other by fitting the connection members.

LED display

Description

LED display {LIGHT EMITTING DIODE DISPLAY APPARATUS}

The present invention relates to an LED display panel connection support device and a LED display device having the same, which are installed in various areas such as indoor or outdoor commercial billboards or various performance halls, stages, etc. to express various images and characters in color. The present invention relates to an LED display device that facilitates installation and dismantling of a large screen.

In general, a multi-vision system uses a display device such as a CRT or LCD as a unit, and displays the screens by arranging the display devices in a plurality of rows and columns to display a different screen on each unit display device, or Refers to a device that divides and displays a screen on each unit display device.

Conventional multi-vision display devices include multi-cube using an initial CRT CRT tube, a multi-cube with a transmissive screen and a projector in a box of a predetermined size, a product using an LCD monitor, and a multi-cube using a DLP. Such multi-vision systems are becoming increasingly important as visual information transmission devices in various fields such as broadcast programs, large stages, big events, concerts, and brand presentations.

The multi-vision system as described above may be used for fixed installation, such as indoor and outdoor display boards, but is commonly used for rental of repeating installation and dismantling on a large screen having a predetermined size and shape as needed in a performance hall or an event event. .

However, the conventional multi-vision display device generally has a structure including a box-shaped frame or housing having a predetermined width and length, so that when a plurality of display devices are arranged in a horizontal row, a separate large installation space is required. Since it requires a lot of weight and volume per unit display device, there was a problem in that repeated installation and dismantling work was not particularly easy during rental.

In addition, since the conventional multi-vision display device blocks light or sound from the back side of the structure, it cannot be combined with the background or image of the back side of the display device, and the installation place is extremely limited, such as installations avoiding the front of the band or the speaker. There was a downside.

On the other hand, in recent years, a device that uses a brighter, lighter and more semi-permanent LED (Light Emitting Diode) than conventional multi-display devices using CRT, LCD, DLP, etc. It is also being used as a vision.

However, in the conventional LED display device according to the present invention, separate frames must be manufactured according to the change in screen size or change in screen form required for rental, thereby reducing productivity and greatly limiting the size and shape of the installation screen. There is only a problem.

In addition, the conventional LED display device is not only difficult to install and dismantle because of its bulky and heavy weight, but also very difficult to move or move once installed. Or a difficult task such as lifting the entire frame up. Therefore, the conventional method has a problem in that a lot of restrictions on the production, particularly by reducing the flexibility of the event site, such as a broadcast or a concert.

The present invention has been made to solve the above-described problems, the present invention is coupled to the support frame formed with a plurality of insertion grooves on the edge of each LED display panel to connect and support the LED display panel, each LED display panel When the LED display panel is disposed so that the insertion grooves of the support frames coupled to the edges of the support frames are opposite to each other, the connecting member having a coupling part coupled to the insertion grooves of the two neighboring support frames is detachably fitted and then rented. It is an object of the present invention to provide an LED display device which is easy to install and dismantle while not being restricted by the size and shape of a required multi-vision screen, an installation place, and the like.

The present invention is an LED display device used to form a large screen by arranging a plurality of LED display devices to achieve the above object, the LED display panel; A plurality of support frames coupled to a rear edge portion of the LED display panel and having insertion grooves formed therein for inserting connection members; At least one support frame is disposed at a position moved inwardly from an end of a rear surface of the LED display panel so as to be spaced apart from the support frame of the LED display device disposed laterally when arranging a plurality of LED display devices; When a plurality of LED display devices are arranged in series and connected to each other, the coupling portion is coupled to the insertion groove of the support frame of one LED display device and the insertion groove of the support frame of the other LED display device adjacent to the support frame, respectively. Provided is an LED display device in which the LED display devices are connected to each other by fitting the connection members.

According to the present invention, the plurality of support frames are coupled to form a square shape on the back of the LED display panel, a pair of the support frame facing each other is disposed at a position moved inward from the end of the LED display panel, One pair of the support frames facing each other is disposed at each end of the LED display panel.

According to the present invention, the connection member used when the support frames are positioned to be spaced apart from each other, the body and the coupling portion of the shape formed on both sides of the body and corresponding to the insertion groove shape of the support frame.

According to the present invention, the connecting members used when the spaced support frames are coupled to each other, the side that crosses the side having a coupling portion corresponding to the shape of the insertion groove of the support frame, the second insertion groove on one side It is provided with a second coupling portion corresponding to the second insertion groove on the other side.

According to the present invention, the insertion groove is formed in a shape in which the surface facing away from the LED display panel and the side facing in the outward direction, the area is widened toward the opposite side from the open side, the insertion groove The shape includes a portion in which the area decreases in the direction toward the LED display panel.

According to the present invention, in order to connect and support the LED display devices arranged to form a large screen to each other to combine the support frame formed with a plurality of insertion grooves on the edge of each LED display panel, By detachably fitting the connecting member having a coupling part coupled to the insertion groove, it is easy to install and dismantle while preventing the size and shape of the multi-vision screen required for rental, installation place, etc.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, embodiments of the present invention illustrated in the following may be modified in many different forms, the scope of the present invention is not limited to the embodiments described in the following. Embodiment of the present invention is provided to more completely describe the present invention to those skilled in the art.

1 to 5 are a perspective view, a left side view, a right side view, a plan view and a bottom view showing a support frame applied to an embodiment of the present invention, Figures 6 to 9 is a connection member applied to an embodiment of the present invention It is a perspective view, the front / back view, the left / right side view, and the top view which were shown.

1 to 9, an LED display device according to an embodiment of the present invention includes an LED display panel, a support frame 100 fixed to the LED display panel, and a connection member 200 for connecting them to each other. It is done by

As shown in FIGS. 1 to 5, the support frame 100 has a rod shape of a rectangular pillar. The support frame 100 is fixedly coupled to the edge portion of the LED display panel. Specifically, the support frame 100 is fixedly coupled to a position slightly moved inward from the edge end 300 (see FIG. 12) or the edge end (see FIG. 20). The LED display panel 300 supports the coupling between the LED display panels 300.

One side of the support frame 100 is formed with a plurality of insertion grooves 110 are spaced apart at regular intervals. Each of the insertion grooves 110 is open to the upper surface and one side and is formed in a form in which the area becomes wider toward the other side, that is, the inner side. Therefore, the open upper surface of the insertion groove 110 has a trapezoidal shape. However, the cross-sectional shape of the insertion groove is not limited thereto, and it is possible to have a modified form including a shape in which an area becomes wider from one open side to the other side.

In addition, the insertion groove 110 is formed such that the area of the open upper surface becomes smaller toward the lower side. Therefore, the open side surface of the open insertion groove 110 has a trapezoidal shape. Therefore, not only the insertion of the connection member 200 which will be described later is easy but also the insertion is not pushed out after the insertion is complete, there is an effect that can prevent the damage to the LED display panel 300 in advance.

Meanwhile, when the support frame 100 is disposed on the LED display panel 300 in a lattice form, both ends of the support frame 100 may be fixed to each other by fastening the support frames 100 with screws N (see FIG. 10). A plurality of fastening grooves 120 and fastening holes 130 are formed therein. The fastening groove 120 is formed in the longitudinal direction of the support frame 100, and the fastening hole 130 is formed in a direction perpendicular to the longitudinal direction, that is, in the lateral direction, so that the fastening groove 120 of the support frame 100 is formed. One side end formed and the other end formed with the fastening hole 130 of the other support frame 100 arranged in a form perpendicular to the support frame 100 is fastened to each other by fastening the screws (N) in a state in which they are opposed to each other It is possible.

In addition, a plurality of fastening grooves 140 are formed on the bottom surface of the support frame 100 to be fixedly coupled to the LED display panel 300 by fastening screws N (see FIG. 18).

In addition, a separate power supply device 600 (see FIG. 19) and screws (N, FIG. 19) are provided on the upper surface of the support frame 100 to provide supply power for the data distribution substrate 400 (see FIG. 12). A plurality of fastening grooves 150 are formed to be fastened and fastened by fastening.

In addition, the support frame 100 so that the connection member 200 fitted into the insertion groove 110 of the support frame 100 can be easily removed from the insertion groove 110 using, for example, a hand or a separate tool. An opening 160 having a predetermined size that intersects the insertion groove 110 may be further formed.

In addition, a side of the support frame 100, a plurality of insertion holes 170 for introducing a plurality of cables may be formed through each insertion groove 110. Therefore, for example, various cables such as a power cable and a signal cable can be connected to each LED display panel 300 through the inlet hole 170 to facilitate the arrangement of the cable lines and at the same time the weight of the support frame 100 itself. Can be reduced.

In addition, reinforcing ribs 180 may be further formed on both sides of the support frame 100 in a horizontal / vertical direction to reinforce the overall strength of the support frame 100.

In addition, as shown in FIG. 13, the support frame 100 pulls the support frame 100 coupled to both sides at the lower center portion of the support frame 100 to form the LED display panel 300. At least one locking groove 190 may be further formed to be detachably fitted to at least one locking pin P fixedly coupled to both sides.

6 and 9, the plurality of connection members 200 are connected to the insertion grooves 110 of the support frame 100 so as to be detachably slidably inserted into and coupled to each other. Insertion groove 110 of the support frame 100 coupled to the edge of 300 has the same shape as the contact with each other.

'형상으로 이루어지며, 상측에서 하측으로 갈수록 그 면적이 넓어지게 형성됨이 바람직하다.That is, the front and back of each connecting member 200 is made of, for example, a trapezoidal shape and the cross section thereof is, for example, '

'It is formed in a shape, it is preferable that the area is formed to become wider from the upper side to the lower side.

In addition, reinforcing ribs 210 may be further formed on both sides, that is, the front and the back of each connection member 200 in the horizontal / vertical direction to reinforce the overall strength of the connection member 200.

In addition, a plurality of coupling holes 220 penetrating the front and rear of each connection member 200 is further formed, so that a separate fixing pin is coupled to the coupling hole 220 to connect the connection member 200 to the coupling groove ( Not only prevents it from being easily detached from the 110, but also firmly fixed to the bottom surface of the LED display panel 300 can be easily stacked from the bottom in a stacked form.

10 and 11 is an exploded perspective view and a coupling plan view showing a coupling state between the support frame applied to an embodiment of the present invention.

Referring to FIGS. 10 and 11, each support frame 100 applied to an embodiment of the present invention is arranged in various right-angle shapes (for example, 'a', 'b', 'c', or 'ㅁ' shape, etc.). In the above state, the fastening grooves 120 and the fastening holes 130 formed at both ends of each support frame 100 are matched with each other, and then the respective support frames 100 are firmly fixed to each other by fastening ordinary screws (N). To combine.

At this time, although both ends of each support frame 100 is fixedly coupled by a conventional screw (N) fastening, but not limited to this, by forming both ends of each support frame 100 in a pair of irregularities, Both ends of the support frame 100 may be detachably fitted to each other, or the support frame 100 may be integrally manufactured to form various right angles.

12 is a diagram illustrating an LED display device according to an embodiment of the present invention.

Referring to FIG. 12, in a state in which the plurality of LED display panels 300 are arranged to be spaced apart by a predetermined interval in the width direction, and the data distribution substrate 400 is mounted on the rear surface of each LED display panel 300, After the plurality of square support frames 100 are arranged on the rear edge of the LED display panel 300, the plurality of support frames 100 may be firmly fixed with a conventional screw (N, see FIG. 18).

At this time, the data distribution substrate 400 is made of a conventional printed circuit board (PCB), is fixedly coupled to the center of the back of the LED display panel 300, the LED pixel through the power supplied from the outside It performs the function of distributing data.

The data distribution board 400 is equipped with electronic components having various functions including the connector socket 410 to be electrically connected to the connector pin 320 protruding from the rear surface of each LED display panel 300.

On the other hand, the LED display panel 300 applied to an embodiment of the present invention may be made by arranging four LED display panels 300 made of a rectangular shape in the width direction so that the overall shape is a square, but is not limited thereto. The plurality of LED display panels 300 may be arranged in the width direction to have various shapes, and the data distribution substrate 400 may be manufactured in various lengths to correspond to the width of the LED display panel 300. The support frame 100 is manufactured to correspond to the length of the LED display panel 300 arranged in various ways.

FIG. 13 is a view of an LED display device according to an embodiment of the present invention seen from the back side thereof. FIG.

Referring to FIG. 13, as shown in FIG. 12, the support frame 100 and the LED display panel 300 are not fixedly coupled by screws N, but the plurality of support frames 100 are squarely coupled. In the state, the support frame 100 coupled to both sides (up / down or left / right) is pulled by the operator's hand to the lower center portion of the support frame 100 connected to both sides (up / down or left / right). The formed at least one locking groove 190 is detachably fitted to at least one locking pin P fixedly coupled to both sides (upper / lower side or left / right side) of the LED display panel 300, thereby making it more convenient. The support frame 100 may be attached to or detached from the LED display panel 200.

14 is a view showing the state in which the LED display panel is connected in the horizontal direction by using the connection support device according to an embodiment of the present invention from the back of the LED display panel, and FIG. 15 is a connection according to an embodiment of the present invention. FIG. 16 is a view of the LED display panel connected in a vertical direction using a support device, as viewed from the back of the LED display panel, and FIG. 16 is a view of connecting the LED display panels in a horizontal row using a connection support device according to an embodiment of the present invention. One state is viewed from the back of the LED display panel.

Referring to FIG. 14, when the plurality of LED display panels 300 are connected in a horizontal direction, the insertion grooves 110 formed on one side of the support frame 100 are symmetrical to face the outside of the LED display panel 300. The pair of support frames 100 are fixedly coupled to the left and right edges of the LED display panels 300, respectively.

Thereafter, the plurality of LED display panels 300 are horizontally disposed such that the insertion grooves 110 of the support frames 100 coupled to the left and right sides of each of the LED display panels 300 face each other. By slidingly inserting the connection member 200 of the present invention into the insertion groove 110 abutting against each other, the LED display panels 300 may be firmly connected horizontally without being separated from each other.

Referring to FIG. 15, when the plurality of LED display panels 300 are connected in the vertical direction, the insertion grooves 110 formed on one side of the support frame 100 face the outside of the LED display panel 300. The pair of support frames 100 are symmetrically fixed to upper and lower edges of the LED display panels 300, respectively.

Thereafter, the plurality of LED display panels 300 are vertically disposed such that the insertion grooves 110 of the support frames 100 coupled to the upper and lower sides of the LED display panels 300 face each other. By slidingly inserting the connection member 200 of the present invention into the insertion groove 110 which is opposed to each other, the LED display panels 300 may be vertically firmly connected without being separated from each other.

Referring to FIG. 16, when the plurality of LED display panels 300 are connected in a horizontal row, the insertion grooves 110 formed on one side of the support frame 100 are symmetrical to face the outside of the LED display panel 300. The pair of support frames 100 are fixedly coupled to the upper, lower, left, and right edges of the LED display panels 300, respectively.

Thereafter, the plurality of LED display panels 300 are arranged side by side so that the insertion grooves 110 of the support frame 100 coupled to the top, bottom, left, and right sides of the LED display panels 300 abut each other. After the arrangement, the LED display panel 300 can be firmly connected in a horizontal row without being separated from each other by slidingly inserting the connection member 200 of the present invention into the insertion groove 110 facing each other.

17A to 17C are perspective views illustrating a coupling state of a support frame and a connection member applied to an embodiment of the present invention.

Referring to Figure 17a to Figure 17c, the coupling of the support frame 100 and the connection member 200 applied to an embodiment of the present invention, first, a pair of support frame 100 made of the same structure with each other insertion groove ( After arranging 110 to face each other, the pair of support frames 100 are face-contacted so that each insertion groove 110 abuts to match each other, and then corresponds to the insertion groove 110 abutting against each other. By slidingly inserting and coupling the connection member 200, the LED display panels 300 may be firmly connected without being separated from each other.

18 is an exploded perspective view illustrating a coupling state of the auxiliary connection member applied to an embodiment of the present invention.

Referring to FIG. 18, a plurality of LED display panels 300 are disposed at regular intervals, and are fixed by fastening normal screws N at upper and lower ends in order to connect and fix the LED display panels 300. A pair of auxiliary connection members 500a and 500b coupled to each other may be further provided. The pair of auxiliary connection members 500a and 500b are curved in a '-' shape so as to support an end portion of the LED display panel 300. The auxiliary connection member supports an end of the LED display panel 300 to protect the auxiliary display member from being bent by external pressure. The auxiliary connection member may be coupled not only to the upper and lower ends of the LED display panel but also to both side ends, and may be formed to surround the outermost part of the LDE display panel.

In the coupling method, a pair of locking pins P are formed at the centers of the auxiliary connection members 500a and 500b, respectively, and as shown in FIGS. 17A to 17C, the locking grooves formed in the support frame 100 ( 190 may be implemented to be detachably fitted.

The auxiliary connection members 500a and 500b are interposed between the support frame 100 and the LED display panel 300.

19 is a view as viewed from the back of the LED display panel showing a coupling state of the support frame and the power supply applied to an embodiment of the present invention.

Referring to FIG. 19, the plurality of LED display panels 300 are arranged to be spaced apart by a predetermined interval in the width direction, and after mounting the data distribution substrate 400 on the back of each LED display panel 300, a square is formed. In the state in which the plurality of support frames 100 coupled to each other are fixedly coupled to the rear edge of the LED display panel 300, each of the power supply devices 600 for supplying the supply power required for the data distribution substrate 400 is supported. It is fixedly coupled to the plurality of fastening grooves 150 formed on the upper surface of the frame 100 by a conventional screw (N) fastening.

20 is a view illustrating a coupling state between a support frame and an LED display panel applied according to another embodiment of the present invention.

Referring to FIG. 20, the support frame 100 is fixed to the edge end at the upper and lower edges of the LED display panel, but is fixed at the position moved from the end to the inner side at the left and right edges.

When the LED display panels are continuously arranged to form a large screen, the one LED display panel and the other LED display panel may be arranged to form a predetermined angle so as to form a polygonal screen. When the support frame is located at the edge of the LED display panel, interference between the support frames may be problematic depending on the arrangement of the LED display panel. However, when the support frame is coupled to a position moved inward from the edge of the LED display panel, the LED display panel may be disposed at a predetermined angle while eliminating interference between the support frames. Accordingly, the LED display device according to the present invention includes a support frame 100 fixed to a position moved from the end to the inside.

21 and 22 are views illustrating a second connection member used for coupling between the LED display panels of the application example of the support frame according to another embodiment of the present invention shown in FIG. 20.

The second connection member 250 has coupling portions 260 corresponding to the shape of the insertion groove 110 of the support frame 100 on both sides of the rectangular parallelepiped body 255. Since the coupling part 260 corresponds to the shape of the insertion groove 110, the coupling part 260 has a trapezoidal shape when viewed from the side, and has a form in which the area decreases toward the inner side of the body 255. In addition, it has a form that becomes smaller toward the lower direction (see Fig. 21).

In addition, a second insertion groove 265 and a second coupling portion 270 are formed in the longitudinal side of the body 255, that is, the sides intersecting both sides of the coupling portion 260. The second insertion groove 265 has a trapezoidal cross-sectional shape that is wider toward the inner direction and narrower toward the lower direction, such as the insertion groove 110 formed in the support frame 100. The second coupling portion 270 has a shape corresponding to the portion coupled to the second insertion groove 265. The body 255 has a small area in the inner direction and has a trapezoidal cross section that decreases toward the lower direction.

FIG. 23 is a view illustrating a state in which the LED display devices are fixed to each other by using the first connection member 200 and the second connection member 9250 according to another embodiment of the present invention.

Referring to the drawings, between the support frame 100 of the LED display device adjacent to each other in the vertical direction, the connecting member 200 is inserted and fixed to the insertion groove 110, the support frame of the LED display device adjacent to each other side Between the 100, the second connecting member 250 is fitted into the insertion groove 110 of both the support frame.

In addition, a second connection member fixed between the support frame of the LED display device of the lower array in the second insertion groove 265 of the second connection member 250 fixed between the support frame of the LED display device of the upper array ( The second coupling part 270 of the 250 is fitted to each other and the second connection members 250 are coupled to each other. According to the exemplary embodiment shown in FIG. 23, the second connection member 250 may not only bind the support frames to each other but also allow the second connection members to be coupled to each other, thereby more firmly coupling the LED display devices. Do.

Although a preferred embodiment of the LED display panel connection support device according to the present invention has been described above, the present invention is not limited thereto, but the utility model registration claims and the detailed description of the invention and various scopes of the accompanying drawings. It is possible to perform the transformation to this also belongs to the present invention.

1 to 5 is a perspective view, left side view, right side view, plan view and bottom view showing a support frame applied to an embodiment of the present invention.

6 to 9 is a perspective view, a front / rear view, a left / right side view and a plan view showing a connecting member applied to an embodiment of the present invention.

10 and 11 is an exploded perspective view and a coupling plan view showing a coupling state between the support frame applied to an embodiment of the present invention.

12 is a view of an example of a state coupled between a support frame and an LED display panel applied to an embodiment of the present invention from the back of the LED display panel.

FIG. 13 is a view of another example of a coupling state between a support frame and an LED display panel applied to an embodiment of the present invention as viewed from the back of the LED display panel; FIG.

FIG. 14 is a view of the LED display panel connected in a horizontal direction using a connection support device according to an embodiment of the present invention as viewed from the rear of the LED display panel; FIG.

15 is a view of the LED display panel connected in a vertical direction by using the connection support device according to an embodiment of the present invention as viewed from the rear of the LED display panel;

FIG. 16 is a view of the LED display panel connected side by side using a connection support device according to an embodiment of the present invention as viewed from the rear of the LED display panel; FIG.

Figure 17a to 17c is a perspective view showing a coupling state of the support frame and the connection member applied to an embodiment of the present invention.

18 is an exploded perspective view illustrating a coupling state of the auxiliary connection member applied to an embodiment of the present invention.

19 is a view as seen from the back of the LED display panel showing a coupling state of the support frame and the power supply applied to an embodiment of the present invention,

20 is a view illustrating a coupling state between a support frame and an LED display panel applied according to another embodiment of the present invention;

21 and 22 is a view showing a second connecting member which is another embodiment of the connecting member according to the present invention,

FIG. 23 is a view illustrating a state in which LED display panels are fixed to each other by using a second connection member according to the present invention.

*** Explanation of symbols on the main parts of the drawing ***

100: support frame, 110: insertion groove,

120,140,150: fastening groove 130: fastening hole,

160: hole, 170: hole,

180,210: Reinforcement rib, 190: Hanging groove,

200: connection member, 220: coupling hole,

250: second connection member 300: LED display panel

320: connector pin, 400: data distribution board

410: connector socket 500a, 500b: auxiliary connecting member,

600: power supply N: screw,

P: Hanging pin

Claims (6)

An LED display device used to form a large screen by arranging a plurality of LED display devices, LED display panel; A plurality of support frames coupled to a rear edge portion of the LED display panel and having insertion grooves formed therein for inserting connection members; At least one support frame is disposed at a position moved inwardly from an end of the rear surface of the LED display panel so as to be spaced apart from the support frame of the LED display device disposed laterally when arranging a plurality of LED display devices. When a plurality of LED display devices are arranged in series and connected to each other, the coupling portion is coupled to the insertion groove of the support frame of one LED display device and the insertion groove of the support frame of the other LED display device adjacent to the support frame, respectively. LED display device, characterized in that the LED display device is connected to each other by fitting the connection member. The method of claim 1, The plurality of support frames are coupled in a square shape on the rear surface of the LED display panel, and a pair of the support frames facing each other are disposed at positions moved inwardly from an end of the LED display panel, and the other of the support frames LED pairs facing each other are disposed at the end of the LED display panel, respectively. The method of claim 1, The insertion groove may include a form in which the side facing outward and the surface far from the LED display panel is open, and the area is increased from the open side toward the opposite side. The method of claim 3, wherein The insertion groove is an LED display device, characterized in that it comprises a shape portion is reduced toward the direction toward the LED display panel. The method according to any one of claims 1 to 4, The connecting member used when the support frames are spaced apart from each other, And a coupling portion formed on both sides of the body and having a shape corresponding to the insertion groove shape of the support frame. The method of claim 5, wherein The connecting member used when the support frames are spaced apart from each other, A side intersecting with a side having a coupling portion corresponding to the shape of the insertion groove of the support frame, one side having a second insertion groove and the other side has a second coupling portion corresponding to the second insertion groove LED display.

Images