KR101239081B1 - Led display apparatus - Google Patents

Abstract

PURPOSE: An LED display apparatus is provided to improve uniformity of a screen showing a large scale image. CONSTITUTION: A plurality of LED modules(10) includes a PCB(12), a front side protection cover(13), and a rear side protection cover(14). The PCB mounts a plurality of LEDs(11). The front side protection cover protects the LED in a front side of the PCB. The rear side protection cover is installed in a rear side of the PCB. A reinforcement panel(20) installs an LED module and forms a plurality of penetration holes(21) and screw holes(22). A case frame(30) supports the reinforcement panel. A support panel(40) is installed in the opposite side of a plurality of the LED modules in the case frame. A power supply(50) is installed in the support panel, is connected with the LED module, and supplies power.

Description

LED display apparatus

The present invention relates to an LED (hereinafter, referred to as an LED) display device which is installed to be stacked and arranged in commercial billboards, various performance halls, broadcast and event stages, for example, indoors and outdoors. It relates to an LED display device having a castle.

In general, a multi-vision system forms a screen by arranging these display devices in a plurality of rows and columns by using a display device such as a CRT or LCD as one unit, and displays different screens on each display device, or one screen. Refers to a device for dividing the display into each display device.

Conventional multi-vision systems include multi-cube using an initial CRT CRT tube, a multi-cube having a transmissive screen and a projector in a box of a predetermined size, a product using an LCD, a multi-cube using a DLP, and the like. Such multi-vision systems are becoming increasingly important as devices for transmitting visual information in broadcast programs, large performance stages, event venues, concerts, brand presentations, and exhibition halls such as motor shows.

The multi-vision system may be fixed and used like an indoor or outdoor advertising board or an electronic signboard, but it is usually an assembly type that can be repeatedly installed and dismantled as a screen having a predetermined size and shape as needed in a performance hall, a broadcasting and an event stage. It is used.

Recently, the display device using lighter, brighter and more semi-permanent LEDs is used as indoor or outdoor fixed billboards or billboards, and as an assembled multi-vision system, compared to existing CRT, LCD, and DLP display devices. There is a trend.

When the LED display device is used for the assembled multi-vision system, the product is thin and light, which is easy to carry and easy to install and dismantle. In addition, by using the LED display device for the assembly-type multi-vision system, the data processing speed is increased and the resolution of the image is high, there is an advantage that can produce a variety of images.

LED displays have a high resolution products every year, and recently, a compact product with a pitch of less than 6 mm is popular.

However, in the case of stacking LED display devices with increasing pitch, the connection between the LED display devices is a phenomenon due to mechanical errors (lines are generated due to gaps between the LED display devices when displaying large images). ) And the uniformity of the screen is lowered. In addition, the case frame is made by using an extruded steel, in this case there is a problem that the line phenomenon is intensified by fine irregularities or distortion in the contact surface.

In particular, in the LED display device having a pitch of 6 mm or less, as described above, the gap between the LEDs is too narrow to tighten the screw (since the screw head interferes with the LED), so that the front protective cover cannot be installed on the PCB. The product is made by attaching the LED to the case frame immediately after mounting the LED on the PCB surface without omitting the front protective cover. In this case, when the operator installs the LED display device, the operator accidentally damages the LED near the side tip of the LED display device, and thus there is a problem in that the image quality decreases along the tip of the screen.

Accordingly, an object of the present invention is to provide a LED display device which can solve the degradation of the image quality caused by the error in the mechanical design of the LED display device and improve the uniformity of the screen.

LED display device according to the present invention, a plurality of LED modules having a plurality of LEDs are mounted, a front protective cover for protecting the LED on the front of the PCB, and a rear protective cover located on the rear of the PCB. ; A reinforcement panel having the plurality of LED modules installed therein and having a plurality of through holes formed therein; A case frame supporting the reinforcement panel; A support panel installed on the case frame opposite to the plurality of LED modules; And a power supply unit installed on the support panel and electrically connected to the LED module to supply power.

In addition, in the LED display device according to the present invention, a plurality of hollow pins are formed at right angles on one side of the front protective cover, and a plurality of through holes are formed in the PCB corresponding to the position of the hollow pins. The rear protective cover is formed with a plurality of screw holes corresponding to the position of the hollow pin, the front protective cover, the hollow pin is screwed through the screw hole of the rear protective cover after the through hole of the PCB It is characterized in that coupled to the rear protective cover.

In addition, the LED display device according to the present invention, the case frame is provided with a pair of horizontal frame and a pair of vertical frame, the horizontal frame and the vertical frame are each formed in an L-shaped cross-section, The long side of the L-shaped cross-section constitutes the side of the case frame, and the short side of the L-shaped cross-section constitutes the rear surface of the case frame, while the horizontal frame and the vertical frame of the case frame are coupled, A short side of the L-shaped cross section of any one of the horizontal frame and the vertical frame is cut at a corner formed by the frame and the vertical frame meeting each other.

In the LED display device according to the present invention, a concave groove is formed in the center of the long surface of the L-shaped cross section, so that both ends of the concave groove protrude relatively high.

According to the present invention as described above, it is possible to install the front protective cover and the rear protective cover on the PCB in the LED module, it is possible to protect the LED of the PCB.

Moreover, according to this invention, the cross section of a case frame is formed in L shape, and each corner of a case frame can hold a right angle structure.

In addition, according to the present invention, by providing a reinforcement panel for maintaining the flatness of the screen in which a plurality of LED modules are arranged, it is possible to maintain an even screen state when viewing the LED display device from the side.

According to the present invention, it is possible to reduce the line phenomenon by forming a concave groove to minimize the contact surface when the adjacent LED display device contacts.

Ultimately, according to the present invention, the uniformity of the screen may be improved.

1 is a perspective view showing an LED display device according to the present invention.
FIG. 2 is an exploded perspective view of the LED display shown in FIG. 1.
3 is an exploded perspective view of the LED module.
Figure 4 is a perspective view of the front protective cover used for the LED module viewed from the rear side.
5 is an exploded perspective view illustrating the case frame.
6 is a perspective view of the fixing block.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention unclear.

Here, the term defining the directionality below is used. The front means a screen or a near side when the image is displayed by installing the LED display device according to the present invention, the rear side is the opposite side of the above-described front, that is, when the image is displayed by installing the LED display device according to the present invention It means the far side from the screen. In addition, the upper (upper) and lower (lower) means a place far from the ground when the LED display device according to the present invention is installed upright, respectively. These terms are not intended to limit the invention, but rather to aid in a clearer understanding of the invention.

1 is a perspective view showing an LED display device according to the present invention, Figure 2 is an exploded perspective view of the LED display device shown in FIG. As shown in these figures, the LED display device 100 according to the present invention is to protect the LED (11) on the front of the PCB 12, the PCB 12 is arranged a plurality of LED 11 is mounted. A plurality of LED modules having a front protective cover 13 and a rear protective cover 14 located at the rear of the PCB 12; These LED module 10 is installed, the reinforcement panel 20 is formed with a plurality of through holes 21 and screw holes 22; A case frame 30 supporting the reinforcement panel 20; A support panel 40 installed at an opposite side of the plurality of LED modules 10 in the case frame 30; And a power supply unit 50 installed on the support panel 40 and electrically connected to the LED module 10 to supply power.

3 is an exploded perspective view of the LED module, and as shown therein, the LED module 10 includes a PCB 12, a front protective cover 13, a rear protective cover 14, and the like.

Here, the PCB 12 is a substantially rectangular printed circuit board, and a plurality of LEDs 11 are arranged apart by a predetermined interval. The PCB 12 is formed with a plurality of through holes 15 for coupling the front protective cover 13 and the rear protective cover 14.

Each LED 11 emits full color light by the sum of the tones of one or more LED elements emitting three primary colors of red (R), green (G) and blue (B), for example, housed in a circular or rectangular pixel case. It is configured to produce. These LEDs 11 are arranged at regular intervals (pitch) from each other and are spaced apart by a pitch of approximately 6 mm or less. As the pitch is smaller, the number of LEDs 11 per unit area of the PCB 12 increases, so that the design of the integrated PCB can be more efficiently implemented, and the resolution of the image is remarkably improved.

4 is a perspective view of the front protective cover used in the LED module from the rear side, as shown in Figure 4, the front protective cover 13 is each LED 11 so that each LED 11 is inserted and exposed to the outside. A plurality of holes 16 formed corresponding to the position of In addition, a plurality of hollow pins 17 are formed at right angles between the holes 16 on one side of the front protective cover 13. These hollow pins 17 pass through a plurality of through holes 15 formed in the PCB 12 described above. The front protective cover 13 is preferably manufactured by injection molding plastic, for example, but is not necessarily limited thereto.

The rear protective cover 14 is formed with a plurality of screw holes 18 corresponding to the position of the hollow pin 17 provided with the front protective cover 13, the hollow pin 17 of the front protective cover 13 is After passing through the through hole 15 of the PCB 12, the hollow portion of the hollow pin 17 is positioned coincident with the screw hole 18 of the rear protective cover 14, and is fixed with the screw 19, the rear protective cover The 14 and the front protective cover 13 are coupled to each other with the PCB 12 therebetween. The rear protective cover 14 is formed with a plurality of ventilation holes 19, it is possible to easily discharge the heat generated from the plurality of LEDs 11 and the PCB 12 to the outside.

The reinforcement panel 20 is made of a metal such as aluminum, for example, and the LED module 10 of the above-described configuration is positioned to cover the through hole 21 so that the reinforcement panel 20 and the rear protective cover 14 are screwed. It is fixed to (not shown). In addition, the reinforcement panel 20 is attached to the front side of the case frame 30 by screws (not shown) through a plurality of screw holes 22.

5 is an exploded perspective view illustrating the case frame. As shown in the drawing, the case frame 30 includes a pair of horizontal frames 31 and a pair of vertical frames 32. The horizontal frame 31 and the vertical frame 32 are each formed in an L-shaped cross section, and the long side of the L-shaped cross section constitutes the side of the case frame 30, and the short side of the L-shaped cross section is the case frame. The back side of 30 is comprised.

When the horizontal frame 31 and the vertical frame 32 are combined, an L-shaped one of the horizontal frame 31 and the vertical frame 32 is formed at a corner portion where the horizontal frame 31 and the vertical frame 32 meet. The short side of the cross section is cut by a predetermined length to form the cut portion 34, whereby the horizontal frame 31 and the vertical frame 32 always meet at right angles to be fixed. Cylindrical portions (not shown) are provided on the inner surfaces of the frames 31 and 32, and a plurality of screw holes 33 are formed at both ends of the frames 31 and 32, and the screws 7 (See Fig. 1) is inserted into the cylindrical portion of the other frame through one screw hole 33 in one frame, so that the case frame 30 is assembled to be exactly rectangular or square.

In addition, when the horizontal frame 31 and the vertical frame 32 are coupled, the corner block where the horizontal frame 31 and the vertical frame 32 meet, for example, formed of plastic and having a right angle corner 35 ) May be provided. This fixing block 35 also has a plurality of screw holes 37, which are fitted with a plurality of screw holes 33 at both ends of the frames 31 and 32 to be fastened and fastened with a plurality of screws (see Fig. 1). Will be.

Further, in each of the frames 31 and 32, a concave groove 36 having a somewhat shallow depth is formed in the long surface of the L-shaped cross section, and both ends of the concave groove 36 protrude relatively high. have. By configuring the side of the case frame 30 as described above, even if the LED display device 100 according to the present invention is stacked or arranged, it is possible to minimize the contact surface to eliminate the line phenomenon.

On the other hand, between the reinforcing panel 20 and the case frame 30 may be further included a reinforcing table 23 made of metal. By this reinforcement 23, it is possible to maintain a more even screen state when viewing the LED display device 100 according to the present invention.

A support panel 40 is installed on the back side of the case frame 30, that is, on the opposite side of the LED module 10, and the power supply unit is electrically connected to the LED module 10 to supply power to the support panel 40. 50 is to be mounted. Components and circuit relations of the power supply unit 50 are well known technologies, and thus detailed description thereof will be omitted.

6 is a perspective view of the fixing block. The LED display device 100 according to the present invention is a coupling means of suitable structure that can be used to connect adjacent LED display devices 100 to each other when these LED display devices 100 are stacked up and down or arranged side to side. It is provided. Conventional coupling means have a large housing size, which makes it difficult or difficult to place the coupling means on the case frame of the LED display.

In this regard, the present inventors have a coupling means made of a coupling ring 39 or a coupling pin (shown in FIG. 6 in a virtually interlocking relationship) is embedded in the fixed block 35, and thus the position of the coupling means is defined in each frame ( 31, 32) to both ends. The coupling ring 39 is installed in each of the frames 31 and 32 together with the fixing block 35 and is exposed through each of the frames 31 and 32. The coupling pins are installed in the frames 31 and 32 together with the fixing block 35, but are not exposed to the outside while being fixed in the groove of the fixing block 35. The coupling ring 39 and the coupling pin are properly positioned in each LED display device 100 in a predetermined direction, or when one LED display device 100 has only the coupling ring 39, the other LED display device 100 Only coupling pins may be provided. Accordingly, the LED display apparatuses 100 are firmly coupled to each other by the coupling means to build a screen displaying a large image.

Hereinafter, a method of manufacturing the LED display device according to the present invention will be described.

First, assembling the case frame 30, a pair of horizontal frame 31 is disposed to face each other and a pair of vertical frame 32 is disposed to face each other between them. Further, at the corner where the horizontal frame 31 and the vertical frame 32 meet, the short side of any one of the L-shaped cross section of the horizontal frame 31 and the vertical frame 32 is cut by a predetermined length, and the cutting part 34. ). Next, the screw holes 37 of the fixing block 35 are aligned with the plurality of screw holes 33 at both ends of the frames 31 and 32, and fastened and fixed by the plurality of screws 8. In addition, the screw 7 is inserted into the cylindrical portion of the other frame through one screw hole 33 in one frame so that the case frame 30 is assembled in a precisely rectangular or square shape.

Subsequently, the reinforcement panel 20 is attached to the front side of the case frame 30 with screws (not shown) through the plurality of screw holes 22.

Meanwhile, after the hollow pin 17 of the front protective cover 13 passes through the through hole 15 of the PCB 12 on which the plurality of LEDs 11 are mounted, the hollow portion of the hollow pin 17 protects the rear surface. By being aligned with the screw hole 18 of the cover 14 and fixed with the screw 19, the rear protective cover 14 and the front protective cover 13 are coupled to each other with the PCB 12 therebetween. As a result, the LED module 10 is assembled.

The assembled LED module 10 is mounted on the case frame 30. Specifically, the LED module 10 is positioned in the reinforcement panel 20 as if the LED module 10 covers the through hole 21, and the reinforcement panel 20 is provided. And rear protective cover 14 is fixed with a screw (not shown). Of course, after mounting the LED module 10 to the reinforcement panel 20, the assembly may be fixed to the case frame 30. In addition, a reinforcing table 23 may be further provided between the reinforcing panel 20 and the case frame 30.

Thereafter, the support panel 40 is provided on the back side of the case frame 30, and the support panel 40 is equipped with a power supply unit 50 for supplying electric power.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

10: LED module
11: LED
12: PCB
13: front protective cover
14: rear protective cover
20: reinforcement panel
30: case frame
40: support panel
50: power supply

Claims (6)

A plurality of LED modules having a PCB on which a plurality of LEDs are mounted, a front protective cover for protecting the LEDs on the front of the PCB, and a rear protective cover located on the rear of the PCB;
A reinforcement panel having the plurality of LED modules installed therein and having a plurality of through holes formed therein;
A case frame supporting the reinforcement panel;
A support panel installed on the case frame opposite to the plurality of LED modules; And
A power supply unit installed on the support panel and electrically connected to the LED module to supply power;
Including,
One side of the front protective cover is formed with a plurality of hollow pins at right angles,
The PCB has a plurality of through holes corresponding to the positions of the hollow pins,
The rear protective cover is formed with a plurality of screw holes corresponding to the position of the hollow pin,
The front protective cover is a LED display device characterized in that the hollow pin is penetrated through the through hole of the PCB and then screwed through the screw hole of the rear protective cover is coupled with the rear protective cover. delete The method of claim 1,
The case frame has a pair of horizontal frame and a pair of vertical frame, the horizontal frame and the vertical frame are each formed in an L-shaped cross-section,
The longer side of the L-shaped cross section constitutes the side surface of the case frame, and the short side of the L-shaped cross section constitutes the rear surface of the case frame,
When the horizontal frame and the vertical frame of the case frame is combined, the short side of the L-shaped cross-section of any one of the horizontal frame and the vertical frame is cut at the corner portion formed by the horizontal frame and the vertical frame meet; LED display. The method of claim 3,
A concave groove is formed in the center of the long surface of the L-shaped cross section, so that both ends of the concave groove protrude relatively high. The method of claim 3,
The corner portion formed by the horizontal frame and the vertical frame is provided with a fixed block having a right angled corner,
The fixing block is fastened and fixed to each of the frames by screws,
The fixing block has a coupling ring or a coupling pin built-in, wherein the coupling ring is installed on each frame together with the fixing block can be exposed through each frame LED display device. The method of claim 1,
LED display device, characterized in that the reinforcement is further provided between the reinforcement panel and the case frame.

Images