WO2008147073A1

WO2008147073A1 - Light emitting diode display panel connection apparatus and light emitting diode display apparatus having the same

Info

Publication number: WO2008147073A1
Application number: PCT/KR2008/002858
Authority: WO
Inventors: Young San Yoon
Original assignee: BASIC TECH Co Ltd
Current assignee: BASIC TECH Co Ltd
Priority date: 2007-05-29
Filing date: 2008-05-22
Publication date: 2008-12-04
Anticipated expiration: 2009-11-29

Abstract

Provided are a light emitting diode display panel connection apparatus and a light emitting diode display apparatus having the same. The light emitting diode display panel connection apparatus for connecting a plurality of light emitting diode display panels includes: support frames coupled to ends of edge parts of a rear surface of each of the LED display panels or inner parts of the edge parts of the rear surface; and connection members coupled to insertion grooves of the support frames between two adjacent LED display panels, each of the connection members including one coupling part inserted into the insertion groove of the one support frame and the other coupling part inserted into the insertion groove of the other support frame to fix the support frames to each other.

Description

LIGHT EMITTING DIODE DISPLAY PANEL CONNECTION

APPARATUS AND LIGHT EMITTING DIODE DISPLAY

APPARATUS HAVING THE SAME

Technical Field

[1] The present invention relates to a light emitting diode (LED) display panel connection apparatus capable of connecting a plurality of LED panels to constitute a large screen for indoor/outdoor billboards, various auditoriums, stages, etc., and a light emitting diode display apparatus having the same, and more particularly, to a light emitting diode display panel connection apparatus by which a large screen can be readily installed and dismantled using connection members connected in an insertion manner, and a light emitting diode display apparatus having the same. Background Art

[2] In general, a multi-vision system includes a plurality of display devices, for example,

CRTs, LCDs, etc. which are disposed in a matrix to form a large screen, and the respective display devices can display different images divided from a single image, or the same image.

[3] The conventional multi-vision system may include various products such as a multi- vision using conventional CRTs, a multi-cube including a small box having a transmissive screen and a projector, a multi-vision using LCD monitors, a multi-cube using DLP, and so on. The multi-vision system is widely used as a visual information display apparatus in various fields such as broadcasting programs, large stages, big events, concerts, brand presentations, and so on.

[4] While such a multi- vision system may be fixedly installed, for example, on indoor/ outdoor billboards, in general, it is widely used in a rental system, in which a large screen can be installed and dismantled to have a predetermined size and shape depending on the necessity of stages, events, and so on.

[5] However, since the conventional multi- vision system has a structure including a box- shaped frame or housing with a predetermined width and length, a separate large installation space is needed when a plurality of display devices are disposed in a matrix to form a large screen. In addition, since each of the display devices is heavyweight and bulky, installation and dismantlement repeated during each rental are time consuming and costly.

[6] Meanwhile, in recent times, a system using a light emitting diode (LED) which is semi-permanent and brighter and lighter than the multi-vision system using the CRT, LCD, DLP, and so on, is widely used in the multi-vision for rental as well as the fixed indoor/outdoor billboards.

[7] However, since the conventional LED display apparatus should have a separate frame depending on variation in screen size and screen shape required during rental, installation of the LED display apparatus is difficult, and the size and shape of the installed screen should be restricted. Therefore, lack of operation flexibility in venues such as broadcasting stations or concerts causes many restrictions to production. Disclosure of Invention Technical Problem

[8] An aspect of the present invention is to provide a light emitting diode display panel connection apparatus by which a plurality of LED display panels can be readily installed and dismantled by coupling support frames having insertion grooves into edge parts of the LED display panels and detachably connecting connection members to the insertion grooves of the support frames when the LED display panels are connected to each other, and a light emitting diode display apparatus having the same. Technical Solution

[9] The present invention provides a light emitting diode display panel connection apparatus for connecting a plurality of light emitting diode (LED) display panels including: support frames coupled to ends of edge parts of a rear surface of each of the LED display panels or inner parts of the edge parts of the rear surface; and connection members coupled to insertion grooves of the support frames between two adjacent LED display panels, each of the connection members including one coupling part inserted into the insertion groove of the one support frame and the other coupling part inserted into the insertion groove of the other support frame to fix the support frames to each other.

[10] In accordance with the present invention, the insertion groove of the support frame may have a shape, one side surface and an upper surface of which are open, the insertion groove may have an area that increases from one open side to the other side thereof, the insertion groove may have an area that decreases from the upper surface toward the LED display panel, and the one open surface of the insertion groove may be directed outward.

[11] In accordance with the present invention, when the two LED display panels adjacent to each other are fixed, a second connection member used when the support frames disposed at inner parts of edge parts of the LED display panel are fastened to each other may include a body; and coupling parts formed at both side surfaces of the body and corresponding to the shapes of the insertion grooves of the support frames. The second connection member may include a second insertion groove formed in one side surface perpendicular to the side surface having the coupling part corresponding to the insertion groove of the support frame, and a second coupling part formed at the other side surface corresponding to the second insertion groove.

[12] The present invention also provides a light emitting diode display apparatus comprising a plurality of LED display devices connected to each other to constitute a large screen, the LED display apparatus including: an LED display panel including a plurality of LEDs; a data distribution substrate fixed to a predetermined position of a rear surface of the LED display panel; and support frames coupled to ends of edge parts of the rear surface of the LED display panel or inner parts of the edge parts of the rear surface, wherein, when the plurality of LED display devices are continuously connected to each other, connection members including one coupling part inserted into the insertion groove of the one support frame and the other coupling part inserted into the insertion groove of the other support frame are inserted into the insertion grooves of the support frames adjacent to each other to fix the LED display devices to each other.

[13] In accordance with the present invention, the LED display panel may have a through- hole through which light, wind, and sound pass, and the insertion grooves may be opposite to each other between the support frames adjacent to each other, each of the insertion grooves having an outer open surface directed to the other insertion groove and an upper open surface far from the LED display panel. The insertion groove may have an area that decreases from the open surface toward an inner side thereof, and the insertion groove may have an area that decreases from the upper surface toward the LED display panel. Auxiliary connection members may be further disposed at edge parts of the LED display panel to support the edge parts of the LED display panel.

Advantageous Effects

[14] According to the present invention, it is possible to readily install and dismantle a plurality of LED display panels by coupling support frames having insertion grooves into edge parts of the LED display panels and detachably connecting connection members to the insertion grooves of the support frames when the LED display panels are connected to each other, and thus, and a large screen can be readily assembled. Brief Description of the Drawings

[15] FIGS. 1 to 5 are a perspective view, a left side view, a right side view, a plan view, and a rear view of a support frame in accordance with an exemplary embodiment of the present invention, respectively;

[16] FIGS. 6 to 9 are a perspective view, a front/rear view, a left/right side view, and a plan view of a connection member in accordance with an exemplary embodiment of the present invention, respectively;

[17] FIGS. 10 and 11 are an exploded perspective view and a coupled plan view showing a coupling state of support frames in accordance with an exemplary embodiment of the present invention, respectively; [18] FIG. 12 is a rear view of an example of an LED display panel in a state in which support frames are coupled to the LED display panel in accordance with an exemplary embodiment of the present invention; [19] FIG. 13 is a rear view of another example of the LED display panel in a state in which support frames are coupled to the LED display panel in accordance with an exemplary embodiment of the present invention; [20] FIG. 14 is a rear view of the LED display panels in a state in which the LED display panels are horizontally connected using connection apparatuses in accordance with an exemplary embodiment of the present invention; [21] FIG. 15 is a rear view of the LED display panels in a state that the LED display panels are vertically connected using connection apparatuses in accordance with an exemplary embodiment of the present invention; [22] FIG. 16 is a rear view of the LED display panels in a state in which the LED display panels are connected in a matrix using connection apparatuses in accordance with an exemplary embodiment of the present invention; [23] FIGS. 17 to 19 are perspective views showing a coupled state of the support frames and the connection member in accordance with an exemplary embodiment of the present invention; [24] FIG. 20 is a perspective view showing a coupled state of an auxiliary connection member in accordance with an exemplary embodiment of the present invention; [25] FIG. 21 is a rear view of the LED display panel, showing a coupled state of the support frames and a power supply in accordance with an exemplary embodiment of the present invention; [26] FIG. 22 is a view showing a coupled state of the support frames and the LED display panel in accordance with another exemplary embodiment of the present invention; [27] FIGS. 23 and 24 are views of a second connection member in accordance with another exemplary embodiment of the present invention; and [28] FIG. 25 shows LED display panels fixed to each other using the second connection member in accordance with another exemplary embodiment of the present invention.

Mode for the Invention [29] Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. [30] Referring to FIGS. 1 to 21, an LED display apparatus in accordance with an exemplary embodiment of the present invention includes LED display panels 300, support frames 100 fixed to the LED display panels 300, and connection members 200 for connecting the support frames 100 to each other.

[31] As shown in FIGS. 1 to 5, each of the support frames 100 has a rectangular bar shape. The support frame 100 is fixed to an edge part of the LED display panel 300, specifically, an end of the edge part of the LED display panel 300 (see FIG. 12) or a slightly moved position inward from the end of the edge part (see FIG. 22), to support coupling between the LED display panels 300.

[32] A plurality of insertion grooves 110 are formed in one surface of the support frame

100 at predetermined intervals. One side surface and an upper surface of each of the insertion grooves 110 are opened, and a cross section of the groove is gradually decreased toward the other side, i.e., an inner side thereof. Therefore, the open upper surface of the insertion groove 110 has a trapezoidal structure. However, not limited thereto, the insertion groove may have various cross-sections, including a shape in which the area decreases from the one side to the other side.

[33] In addition, the area of the opened upper surface of the insertion groove 110 increases toward the lower surface thereof. Therefore, the shape of the opened one side of the insertion groove 110 has a trapezoidal shape. As a result, since the connection member 200 can be readily inserted and cannot be pushed any more when the insertion is completed, it is possible to prevent damage to the LED display panel 300.

[34] Meanwhile, when the support frames 100 are disposed around the LED display panel

300 in a lattice shape, in order to fasten and fix the support frames 100 to each other using screws N (see FIG. 10), a plurality of fastening grooves 120 and fastening holes 130 are formed in both ends of the support frames 100. Since the fastening grooves 120 are formed in a longitudinal direction of the support frame 100 and the fastening holes 130 are formed in a direction perpendicular to the longitudinal direction, i.e., a lateral direction, one end of the support frame 100 having the fastening grooves 120 is in contact with and fastened to the other end of the other support frame 100 having the fastening holes 130 disposed perpendicular to the support frame 100 by fastening screws N.

[35] In addition, a plurality of fastening grooves 140 are formed in a lower surface of the support frame 100 to fix the frame 100 to the LED display panel 300 by fastening screws N (see FIG. 20).

[36] Further, a plurality of fastening grooves 150 are formed in the upper surface of the support frame 100 to install a separate power supply 600 (see FIG. 21) for providing power to a data distribution substrate 400 (see FIG. 12) using screws N (see FIG. 21).

[37] Furthermore, a predetermined number of holes 160 may be further formed in the support frame 100 in a direction perpendicular to the insertion grooves 110 to readily extract the connection members 200 inserted into the insertion grooves 110 of the support frame 100 from the insertion grooves 110. [38] In addition, a plurality of introduction holes 170 may be formed between the insertion grooves 110 in the support frame 100 to introduce related cables. Therefore, various cables such as power cables, signal cables, and so on, can pass through the introduction cables 170 to be connected to the respective LED display panels 300 so that the cables can be readily arranged and the weight of the support frame 100 can be reduced.

[39] Further, in order to reinforce the entire strength of the support frame 100, reinforcement ribs 180 may be further formed at both sides of the support frame 100 in horizontal and vertical directions.

[40] Furthermore, as shown in FIG. 13, at least one locking groove 190 may be further formed in a center part of a lower end of the support frame 100 to pull the opposite support frames 100 to be detachably locked to at least one locking pin P fixed to both sides of the LED display panel 300 in a state in which the support frames 100 are coupled to each other in a rectangular shape.

[41] In addition, as shown in FIGS. 6 to 9, the connection member 200 is a connection pin detachably slid into the insertion grooves 110 of the support frames 100 to be press- fitted thereinto, and having the same shape as that in which the insertion grooves 110 of the support frames 100 coupled to the edge parts of the LED display panels 300 are in contact with each other.

[42] That is, front and rear surfaces of the connection member 200 have a trapezoidal shape, and a substantially X-shaped cross-section, for example, "

", an area of which increases from an upper side to a lower side thereof.

[43] Further, both surfaces of the connection member 200, i.e., the front and rear surfaces may further include horizontal and vertical reinforcement ribs 210 in order to reinforce the entire strength of the connection member 200.

[44] Furthermore, a plurality of coupling holes 220 are further formed in the connection member 200 to pass through the front and rear surfaces such that separate fixing pins are fastened to the coupling holes 220 to prevent separation of the connection member 200 from the fastening grooves 110 and securely fix the connection member 200 to a rear surface to readily stack the LED display panels 300 from the bottom.

[45] FIGS. 10 and 11 are an exploded perspective view and a coupled plan view showing a coupling state of support frames in accordance with an exemplary embodiment of the present invention, respectively.

[46] Referring to FIGS. 10 and 11, in a state in which the support frames 100 in accordance with an exemplary embodiment of the present invention are disposed around the LED display panel, the fastening grooves 120 and the fastening holes 130 formed in both ends of the support frames 100 are aligned to each other, and then, the support frames 100 are firmly fastened to each other by conventional screws N.

[47] At this time, while both ends of the support frames 100 are fastened to each other by conventional screws N, not limited thereto, both ends of the support frames 100 may be formed to have prominences and depressions, which are alternately coupled to each other, to be press-fitted into each other in a right angle shape, or the support frames 100 may be integrally formed with each other to form a right angle shape.

[48] FIG. 12 is a view showing the LED display device in accordance with an exemplary embodiment of the present invention.

[49] Referring to FIG. 12, a data distribution substrate 400 is mounted on a rear surface of the LED display panel 300, a plurality of support frames 100 coupled in a square shape are disposed at edge parts of the rear surface of the LED display panel 300, and then, conventional screws N (see FIG. 20) firmly fasten the support frames 100. At this time, the LED display panel 300 includes a plurality of unit LED display panels arrayed and fixed to each other. That is, in a state in which the unit LED display panels are disposed, the support frame 100 is coupled to the unit LED display panels to form the LED display panel 300. At this time, the support frame 100 functions as a coupling member for coupling a plurality of unit LED display panels to form a single LED display panel. The LED display panel 300 has a through-hole through which light, wind and sound can pass.

[50] The data distribution substrate 400 is formed of a conventional printed circuit board

(PCB), which is fixed to a rear center part of the LED display panel 300 to distribute data to LED pixels through power supplied from the exterior.

[51] Various electronic components such as connector sockets 410 are mounted on the data distribution substrate 400 to be electrically connected to connector pins 320 projecting from the rear surface of the LED display panel 300.

[52] FIG. 13 is a rear view of the LED display apparatus in accordance with another exemplary embodiment of the present invention, showing a coupling structure between the LED display panels 300 and the support frames 100, which is different from FIG. 12.

[53] Referring to FIG. 13, in a state in which a plurality of support frames 100 are coupled in a rectangular shape, the support frames 100 disposed at both sides (upper and lower sides or left and right sides) are pulled by an operator such that at least one locking groove 190 formed in centers of lower ends of the support frames 100 connected to both sides (upper and lower sides of left and right sides) is detachably fitted onto at least one locking pin P fixed to both sides (upper and lower sides or left and right sides) of the LED display panel 300. As a result, it is possible to attach/detach the support frames 100 to/from the LED display panel 300.

[54] FIG. 14 is a rear view of the LED display panels in a state in which the LED display panels are horizontally connected using connection apparatuses in accordance with an exemplary embodiment of the present invention, FIG. 15 is a rear view of the LED display panels in a state in which the LED display panels are vertically connected using connection apparatuses in accordance with an exemplary embodiment of the present invention, and FIG. 16 is a rear view of the LED display panels in a state that the LED display panels are connected in a matrix using connection apparatuses in accordance with an exemplary embodiment of the present invention.

[55] Referring to FIG. 14, when the plurality of LED display panels 300 are connected in a horizontal direction, the insertion groove 110 is formed in one side of the support frame 100 such that a pair of support frames 100 disposed toward the exterior of the LED display panel 300 in a symmetrical manner are fixed to left and right edge parts of the LED display panel 300.

[56] Then, the plurality of LED display panels 300 are disposed in a horizontal direction such that the insertion grooves 110 of the support frames 100 coupled to left and right sides of the LED display panel 300 are opposite to each other, and then, the connection member 200 in accordance with the present invention is slid into the insertion grooves 110 in contact with each other to firmly couple the LED display panels 300 in a horizontal direction.

[57] Referring to FIG. 15, when the plurality of LED display panels 300 are connected in a vertical direction, a pair of support frames 100 are fixed to upper and lower edge parts of the LED display panel 300 such that the insertion grooves formed in one side surfaces of the support frames 100 are opposite to each other toward the exterior of the LED display panels 300.

[58] Next, the plurality of LED display panels 300 are disposed in a vertical direction such that the insertion grooves 110 of the support frames 100 coupled to upper and lower sides of the LED display panel 300 are opposite to each other, and then, the connection member 200 in accordance with the present invention is slid and press- fitted into the insertion grooves 110 in contact with each other in an opposite manner so that the LED display panels 300 can be firmly connected in a vertical direction.

[59] Referring to FIG. 16, when the plurality of LED display panels 300 are connected in a matrix, pairs of support frames 100 are fixed to upper/lower/left/right sides of the LED display panel 300 such that the insertion grooves 110 formed in one side surface of the support frames 100 are opposite to each other toward the exterior of the LED display panels 300.

[60] Next, the plurality of LED display panels 300 are disposed in a matrix such that the insertion grooves 110 of the support frames 100 coupled to upper/lower/left/right sides of the LED display panel 300 are opposite to each other, and then, the connection member 200 in accordance with the present invention is slid and press-fitted into the insertion grooves 110 in contact with each other in an opposite manner so that the LED display panels 300 can be firmly connected in a matrix.

[61] FIGS. 17 to 19 are perspective views showing a coupled state of the support frames and the connection member in accordance with an exemplary embodiment of the present invention.

[62] Referring to FIGS. 17 to 19, the support frames 100 and the connection members 200 in accordance with an exemplary embodiment of the present invention will be coupled to each other as follows. First, a pair of support frames 100 having the same structure are disposed such that the insertion grooves 110 are opposite to each other. Then, the support frames 100 are in surface contact with each other such that the insertion grooves 110 are in contact with each other. Next, the connection member 200 in accordance with the present invention is slid and press-fitted into the opposite insertion grooves 110 to securely couple the LED display panels 300 to each other.

[63] FIG. 20 is a perspective view showing a coupled state of an auxiliary connection member in accordance with an exemplary embodiment of the present invention.

[64] Referring to FIG. 20, when the LED display panel is constituted of a plurality of unit

LED display panels, which are coupled to each other, the plurality of unit LED display panels are disposed at predetermined intervals, and a pair of auxiliary connection members 500a and 500b are fastened to upper and lower ends of the unit LED display panels by screws to thereby form a single LED display panel. The pair of auxiliary connection members 500a and 500b have a "

^~ι

"shape to support ends of the LED display panels 300. The auxiliary connection members 500a and 500b may be used even when the LED display panel is formed of a single unit LED display panel. The auxiliary connection members function to support the ends of the LED display panel 300 to prevent the panel from being bent by an external force. The auxiliary connection members may be coupled to both side ends as well as upper and lower ends of the LED display panels to surround the outermost part of the LED display panel.

[65] In addition, a pair of locking pins P may pass through holes formed in center parts of the auxiliary connection members 500a and 500b to be detachably inserted into the locking grooves 190 formed in the support frames 100, as shown in FIG 17 to 19.

[66] The auxiliary connection members 500a and 500b are disposed between the support frames 100 and the LED display panel 300.

[67] FIG. 21 is a rear view of the LED display panel showing a coupled state of the support frames and a power supply in accordance with an exemplary embodiment of the present invention.

[68] Referring to FIG. 21, the data distribution substrate 400 is mounted on a rear surface of the LED display panel 300, and then, the plurality of support frames 100 coupled in a square shape are fixed to edge parts of the rear surface of the LED display panel 300. In this state, a power supply 600 for supplying power to the data distribution substrate 400 is fixed to an upper surface of the support frame 100 through a plurality of fastening grooves 150 using screws N.

[69] FIG. 22 is a view showing a coupled state of the support frames and the LED display panel in accordance with another exemplary embodiment of the present invention.

[70] Referring to FIG. 22, while the support frames 100 disposed at upper and lower sides of the LED display panel are fixed to ends of edge parts of the LED display panel, the support frames 100 disposed at left and light sides of the LED display panel are fixed to inner parts of the edge parts of the LED display panel.

[71] When the LED display panels are continuously disposed to form a large screen, one

LED display panel and the other LED display panel may be disposed to form a certain angle to form a polygonal screen. When the support frames are disposed at ends of the edge parts of the LED display panel, interference between the support frames may be generated depending on disposition of the LED display panel. However, when the support frames are coupled to the inner parts of the edge parts of the LED display panels, it is possible to prevent interference between the support frames and dispose the LED display panels at a predetermined angle. Therefore, the LED display apparatus in accordance with the present invention includes the support frames fixed to the inner parts of the edge parts of the LED display panel.

[72] FIGS. 23 and 24 are views showing a second connection member in accordance with another exemplary embodiment of the present invention.

[73] The second connection member 250 includes coupling parts 260 formed at both sides of a rectangular body 255 thereof to correspond to the insertion grooves 110 of the support frame 100. The coupling parts 260 corresponding to the shape of the insertion grooves 110 also have a trapezoidal shape, an area of which decreases toward the inner part of the body 255 and decreases toward a lower part thereof (see FIG. 23).

[74] Further, a second insertion groove 265 and a second coupling part 270 are formed in side surfaces of the body 255, i.e., surfaces perpendicular to the both surfaces having the coupling parts 260. The second insertion groove 265 has a trapezoidal cross- section, an area of which increases toward the inner part and decreases toward a lower part thereof, like the insertion grooves 110 formed in the support frame 100. The second coupling part 270 has a trapezoidal shape corresponding to the second insertion groove 265, an area of which decreases toward an inner part of the body 255 and decreases toward a lower part thereof.

[75] FIG. 25 shows LED display devices fixed to each other using the first connection members 200 and the second connection members 250 in accordance with another exemplary embodiment of the present invention.

[76] Referring to FIG. 25, the first connection members 200 are inserted into the insertion grooves 110 of the support frames 100 of the LED display devices adjacent to each other in a vertical direction, and the second connection members 250 are inserted into the insertion grooves 110 of the left and right support frames 100 of the LED display devices adjacent to each other in a horizontal direction.

[77] In addition, the second coupling parts 270 of the second connection members 250 fixed between the support frames of the lower LED display devices are inserted into the second insertion grooves 265 of the second connection members 250 fixed between the support frames of the upper LED display devices to couple the second connection members 250 to each other. In the embodiment shown in FIG. 25, the second connection members 250 fasten the support frames to each other and the second connection members can be coupled to each other, thereby securely coupling the LED display devices.

[78] While this invention has been described with reference to exemplary embodiments thereof, it will be clear to those of ordinary skill in the art to which the invention pertains that various modifications may be made to the described embodiments without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents.

Claims

[1] A light emitting diode display panel connection apparatus for connecting a plurality of light emitting diode (LED) display panels to each other, comprising: support frames coupled to ends of edge parts of a rear surface of each of the LED display panels or inner parts of the edge parts of the rear surface; and connection members coupled to insertion grooves of the support frames between two adjacent LED display panels, each of the connection members including one coupling part inserted into the insertion groove of the one support frame and the other coupling part inserted into the insertion groove of the other support frame to fix the support frames to each other.

[2] The light emitting diode display panel connection apparatus according to claim

1, wherein the insertion groove of the support frame has a shape, one side surface and an upper surface of which are open.

[3] The light emitting diode display panel connection apparatus according to claim

2, wherein the insertion groove has an area that increases from one open side to the other side thereof.

[4] The light emitting diode display panel connection apparatus according to claim

3, wherein the insertion groove has an area that decreases from the upper surface toward the LED display panel.

[5] The light emitting diode display panel connection apparatus according to claim 3 or 4, wherein the one open surface of the insertion groove is directed outward.

[6] The light emitting diode display panel connection apparatus according to claim

5, wherein, when the two adjacent LED display panels are fixed, the connection members used when the support frames disposed at ends of the edge parts of the rear surface of the LED display panel are fastened to each other have the same shape as the insertion grooves in contact with each other.

[7] The light emitting diode display panel connection apparatus according to claim

6, wherein the connection member has a lateral cross-section of "

> <

[8] The light emitting diode display panel connection apparatus according to claim

5, wherein, when the two adjacent LED display panels are fixed, a second connection member used when the support frames disposed at inner parts of the edge parts of the LED display panel are fastened to each other comprises: a body; and coupling parts formed at both side surfaces of the body and corresponding to the shapes of the insertion grooves of the support frames.

[9] The light emitting diode display panel connection apparatus according to claim

8, wherein the second connection member comprises: a second insertion groove formed in one side surface perpendicular to the side surface having the coupling part corresponding to the insertion groove of the support frame, and a second coupling part formed at the other side surface corresponding to the second insertion groove.

[10] The light emitting diode display panel connection apparatus according to claim

5, wherein the support frame further has a hole passing through the insertion groove so that the connection member coupled to the insertion grooves is readily separated through the hole.

[11] The light emitting diode display panel connection apparatus according to any one of claims 1 to 4, wherein the open upper surface or the open one surface of the insertion groove has a trapezoidal shape.

[12] The light emitting diode display panel connection apparatus according to any one of claims 1 to 4, wherein the support frame further has an introduction hole for introducing a cable through side surfaces thereof.

[13] A light emitting diode (LED) display apparatus to constitute a large screen which has a plurality of LED display apparatus connected to each other, the light emitting diode display apparatus comprising: an LED display panel including a plurality of LEDs; a data distribution substrate fixed to a predetermined position of a rear surface of the LED display panel; and support frames coupled to ends of edge parts of the rear surface of the LED display panel or inner parts of the edge parts of the rear surface, wherein, when the plurality of LED display devices are continuously connected to each other, connection members including one coupling part inserted into the insertion groove of the one support frame and the other coupling part inserted into the insertion groove of the other support frame are inserted into the insertion grooves of the support frames adjacent to each other to fix the LED display devices to each other.

[14] The light emitting diode display apparatus according to claim 13, wherein the

LED display panel has a through-hole through which light, wind, and sound pass.

[15] The light emitting diode display apparatus according to claim 13, wherein the insertion grooves are opposite to each other between the support frames adjacent to each other, and each of the insertion grooves has outer open surface directed to the other insertion groove and an upper open surface far from the LED display panel.

[16] The light emitting diode display apparatus according to claim 15, wherein the insertion groove has an area that decreases from the open surface toward an inner side thereof.

[17] The light emitting diode display apparatus according to claim 16, wherein the insertion groove has an area that decreases from the upper surface toward the LED display panel.

[18] The light emitting diode display apparatus according to claim 13, wherein the

LED display panel has a locking pin formed at its rear surface, and the support frame has a locking groove fitted onto the locking pin.

[19] The light emitting diode display apparatus according to claim 13, wherein one pair of support frames opposite to each other are disposed at ends of edge parts of the rear surface of the LED display panel, and the other pair of support frames opposite to each other are disposed at inner parts of edge parts of the rear surface.

[20] The light emitting diode display apparatus according to claim 13, further comprising auxiliary connection members disposed at edge parts of the LED display panel to support the edge parts of the LED display panel.