KR101153272B1 - Led bar lighting device and display device using that - Google Patents

Abstract

PURPOSE: A bar-type LED lighting device and an LED display device using the same are provided to prevent moisture and dust from flowing into an LED module by securely coupling the LED module to a terminal base through a gasket. CONSTITUTION: A bar-type LED lighting device comprises multiple pixel units. Each pixel unit comprises an LED module(130) and a terminal base(150). The LED module receives one or more LEDs(132) and a printed circuit board therein. A first connector connected to the printed circuit board is formed on the rear surface of the LED module. The terminal base has a second connector(152). The second connector is detachably connected to the first connector.

Description

Bar type LED lighting device and LED display device using the same {LED bar lighting device and display device using that}

The present invention relates to a bar-shaped LED lighting device and an LED display device using the same, and more particularly, to a bar-shaped LED lighting device and a LED display device using the same structure of the LED pixel unit easy to maintain.

In general, LED has a long life, low power consumption, and easy control compared to other lighting means. Such LEDs replace conventional lighting and display devices in various forms. Among the LED lighting devices, the bar type LED lighting device is provided in the form of a strip having a plurality of LEDs mounted on a length member substrate. Bar-type LED lighting device is usually installed in the form of landscape lighting on the exterior wall of the building. The LED display device arranges a plurality of such bar-shaped LED lighting devices, and displays an image or a moving picture by controlling R, G, and B values in each LED pixel unit.

1 is a perspective view illustrating an LED strip in a conventional bar-type LED lighting device. Referring to FIG. 1, one or more LEDs 12 are installed on the LED pixel unit 10 serving as a unit light emitter. The LED pixel units 10 are connected by the connecting line 14. The connection line 14 includes a power line for LED lighting and a signal line for controlling LED lighting.

FIG. 2 is a front view illustrating a facade display device using a conventional LED, and shows an example in which an LED display device is applied to a facade display displaying advertisements on an outer wall of a building. Referring to FIG. 2, a plurality of LED pixel units 10 are connected by the connecting line 14 and mounted on the strip 20. For example, aluminum is extruded to form a length member, and the LED pixel units 10 are fixed thereto at predetermined intervals. The strips 20 are arranged in a plurality of rows to form the LED display device 22.

Conventional bar-type LED lighting device has a printed circuit board (PCB) not shown in the housing forming the LED pixel unit 10, as shown in Figure 1, the housing is connected to the connection line 14 in the insulating material, etc. It is composed by impregnation. This is because the LED pixel unit 10 should be waterproofed due to the characteristics of the landscape lighting or the facade display mounted on the building exterior wall.

However, in such a structure, when a specific LED pixel unit 10 fails on the strip 20, the connection line 14 is cut to separate the failed LED pixel unit 10, and a new LED pixel unit 10 is removed. Should be connected. That is, the maintenance of the LED pixel unit 10 is very cumbersome, and there is a high probability that an accident such as a short circuit or short may occur in the process of cutting and reconnecting the connection line 14.

In addition, when the facade display is constructed in the same manner as in FIG. 2, the connecting lines 14 are connected to each other by a connector at the connecting portion of the strip 20 and the strip 20. By the way, the connector connection part is often released by an impact such as wind or vibration, or the transmission of power and signals is often not made due to poor contact.

The present invention has been proposed to solve the above-mentioned conventional problems, and an object thereof is to provide a bar-shaped LED lighting device having a new structure and an LED display device using the same that can be easily replaced and repaired when an LED pixel unit fails. .

In the bar-shaped LED lighting apparatus according to an embodiment of the present invention, a bar-shaped LED lighting apparatus having a structure in which a plurality of LED pixel units are connected by a connection line and fixedly installed on a strip, the LED pixel unit may include one or more LEDs. And an LED module having a printed circuit board printed with a lighting control circuit of the LED, and having a first connector connected to the printed circuit board at a rear surface thereof. And a second connector detachably connected to the first connector to the outside of the housing, and including a terminal base in which a connection between the connecting line and the second connector is impregnated in the housing.

In the bar-shaped LED lighting apparatus according to another embodiment of the present invention, a gasket is interposed between the rear surface of the LED module and the front surface of the terminal base.

In the bar-shaped LED lighting apparatus according to another embodiment of the present invention, a seating rib is placed on the rear surface of the LED module so as to receive an outer portion of the terminal base, and the terminal base is provided at an end portion of the fixing piece which is placed on both sides of the mounting rib. A fixing wedge for protruding the terminal base from the rear side is protruded, and the gasket is interposed between the seating rib and the first connector.

Bar-shaped LED lighting apparatus according to another embodiment of the present invention, the front side of the LED module is coupled to a light transmission cover for transmitting the light of the LED, the light refractive means for refracting the light of the LED on the light transmission cover at a predetermined angle Is provided.

In the bar-shaped LED lighting apparatus according to another embodiment of the present invention, the light refractive means is composed of any one of a convex lens, a concave lens, and a planar lens.

In the bar-shaped LED lighting apparatus according to another embodiment of the present invention, a tangy piece is extended to the front side of the floodlight cover on both sides of the floodlight cover, a protrusion is formed in the front end of the tangy piece in a direction perpendicular to the tangy piece, the strip A locking hole is formed at a position corresponding to the locking protrusion, and the locking protrusion of the floodlight cover is elastically coupled to the locking hole to fix the LED pixel unit to the strip.

In the bar-shaped LED lighting apparatus according to another embodiment of the present invention, a connecting line connector for interconnecting connecting lines is formed at the end of the connecting line drawn out at both ends of the strip, the connecting line connector is a screw coupling portion formed with male or female threads at the end; Equipped.

In the bar-shaped LED lighting apparatus according to another embodiment of the present invention, the strip has a top and bottom shades protruding forward and respectively at the top and bottom to protect the LED pixel unit, the rear of the strip The rear cover formed with a heat dissipating portion is coupled to the side.

The LED display device according to an embodiment of the present invention is configured by combining a plurality of bar type LED lighting devices of any one of the bar type LED lighting devices described above.

The LED display device according to another embodiment of the present invention further includes a control board for individually controlling the LED pixel units so that each LED pixel unit is individually displayed as a unit pixel having R, G, and B values.

The LED display device according to another embodiment of the present invention, further comprises a monitoring device for monitoring the state of the LED pixel unit in communication with the control board, the LED pixel controller installed in each of the LED pixel unit is connected to the connection line At least one of the connected state, the disconnection state of the LED, and the short state inside the LED pixel unit is detected and transmitted to the control board.

According to the present invention, by configuring a terminal base functioning as a terminal connected to the LED module and the connection line for accommodating the LED and PCB by a connector, it is easy to replace only the LED module when a failure occurs in the LED or PCB, etc. It can be repaired easily, and when replacing the LED module, there is no need to connect a new connection line, thereby preventing a safety accident such as a short circuit or a short.

According to the present invention, the LED module and the terminal base are firmly coupled with the gasket interposed therebetween, thereby preventing moisture and dust from entering into the LED module.

In addition, according to the present invention, by mounting a lens in front of the LED module to increase the brightness by light refraction and to adjust the range and direction of the angle of orientation, while reducing the number of LEDs in the LED pixel unit to increase the luminous effect to reduce power consumption can do.

In addition, according to the present invention, by forming a screw coupling portion in the connector of the end of the connecting line connecting the LED strips, to strengthen the connector connection structure and to prevent the disconnection and contact failure caused by the impact of wind or vibration. have.

In addition, according to the present invention, the LED pixel unit is individually controlled, and a pixel error check is performed in the monitoring device to detect a dead pixel in a facade display in real time and to perform rapid maintenance when a dead pixel is generated.

1 is a perspective view illustrating a conventional bar LED lighting device,
Figure 2 is a front view illustrating a facade display device using a conventional LED,
3 is a perspective view illustrating a bar type LED lighting apparatus according to the present invention;
4 is an exploded perspective view illustrating an LED pixel unit according to the present invention;
5 is an exploded perspective view illustrating a connector coupling structure of an LED module and a terminal base;
6 is a perspective view illustrating a coupling structure of an LED pixel unit and a strip;
7 is a view illustrating a connecting line coupling structure in a strip unit, and
8 is a block diagram illustrating a pixel error check system configuration in the present invention.

Hereinafter, with reference to the accompanying drawings will be described a specific embodiment according to the present invention. However, this is not intended to limit the present invention to the specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

The same reference numerals are used for parts having similar configurations and operations throughout the specification. And the drawings attached to the present invention is for convenience of description, the shape and relative measures may be exaggerated or omitted.

In describing the embodiments in detail, overlapping descriptions or descriptions of obvious technology in the art are omitted. In addition, in the following description, when a portion "includes" another component, it means that the component can be further included in addition to the described component unless otherwise stated.

 In addition, the terms "~", "~", "~ module" described in the specification means a unit for processing at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software. Can be. In addition, when a part is electrically connected to another part, this includes not only the case where it is directly connected, but also the case where it is connected through the other structure in the middle.

Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the second component may be referred to as the first component, and similarly, the first component may also be referred to as the second component.

The present invention relates to a bar type LED lighting device and an LED display device using the same. First, an embodiment of a bar type LED lighting device will be described, and then, an LED display device using the same will be described.

3 is a perspective view illustrating a bar LED lighting device according to the present invention, Figure 4 is an exploded perspective view illustrating an LED pixel unit according to the present invention, Figure 5 is an exploded view illustrating a connector coupling structure of the LED module and the terminal base Perspective view.

Referring to FIG. 3, the plurality of LED pixel units 100 are connected by a connection line 202 to form line illumination. The LED pixel unit 100 is equipped with one or more LEDs 132 to form a unit light emitting unit. The connection line 202 includes a power line for lighting the LED 132 and a signal line for controlling the LED 132 lighting.

Referring to the exploded perspective view of FIG. 4, the LED pixel unit 100 includes a floodlight cover 110, an LED module 130, and a terminal base 150. The floodlight cover 110 is coupled to the front surface of the LED module 130 and includes light refractive means 112 that refracts the light of the LED 132 at a predetermined angle corresponding to each LED 132. In the example shown, the light refracting means 112 is a convex lens, but may be replaced with a concave lens or a planar lens.

On both sides of the floodlight cover 110 is provided with a finger piece 116 for fixing the LED pixel unit 100 to the strip 300 to be described later. The finger piece 116 extends from both sides of the floodlight cover 110 to the front side to have a finger force at an angle perpendicular to the front surface of the floodlight cover 110. The locking portion 114 protrudes in the vertical direction from the edge portion 116 of the edge portion 116. The structure in which the LED pixel unit 100 is fastened to the strip 300 by the finger piece 116 will be described later with reference to FIG. 6.

The LED module 130 has a box shape and accommodates the LED 132 and a printed circuit board (not shown) for controlling the lighting of the LED 132 therein. As shown, the light emitting portion of the LED 132 is exposed to the front of the LED module 130. In order to increase the luminance of the LED pixel unit 100, the LED module 130 may be provided with a plurality of LEDs 132. In the illustrated example, four LEDs 132 are installed, but the number of LEDs 132 is not limited thereto.

Referring to FIG. 5, the first connector 142 protrudes toward the rear side of the LED module 130. A hollow rectangular gasket 144 is interposed around the first connector 142, and a seating rib 146 is installed along the circumference of the gasket 144. A fixing piece 134 is inserted into both sides of the mounting rib 146, and a fixing protrusion 136 is formed at an end of the fixing piece 134 to be perpendicular to the fixing piece 134. The fixing protrusion 136 includes a fixing wedge 138 having a wedge formed to protrude toward the inside of the LED module 130.

The terminal base 150 functions as a terminal block for transmitting the power line and the signal line of the connection line 202 to the LED module 130. As shown, the second connector 152 is detachably connected to the first connector 142 to the front of the terminal base 150. The front surface of the terminal base 150 around the second connector 152 forms a plane. The connection line 202 is inserted into both sides of the terminal base 150, and the pins of the connection line 202 and the second connector 152 are connected inside the terminal base 202. The terminal base 202 has a structure in which the connecting portion of the connecting line 202 and the second connector 152 is impregnated with an insulating material so as to be insulated from the outside in a moistureproof and dustproof state.

Referring to FIG. 5, the seating rib 146 accommodates an outer portion of the terminal base 150, and the fixing pieces 134 formed on both sides of the seating rib 146 are in close contact with both side walls of the terminal base 150. And as shown in Figure 3, the fixing wedge 138 of the end of the fixing piece 134 is caught on the back side of the terminal base 150, the LED module 130 and the terminal base 150 is interference fit.

As the LED module 130 and the terminal base 150 are mutually coupled, the first connector 142 of the LED module 130 and the second connector 152 of the terminal base 150 are connected to each other. Therefore, the power line and the signal line of the connection line 202 may be connected to the LED module 130.

At this time, the front surface of the terminal base 150 is in close contact with the gasket 144 to seal the connection between the first connector 142 and the second connector 152. Therefore, moisture and dust may be blocked from being introduced into the printed circuit board inside the LED module 130. Here, referring to FIG. 5, it can be seen that the gasket 144 has a plurality of ribs protruding toward the terminal base 150 along the circumference of the first connector 142. This gasket 144 structure tightly seals the LED module 130.

Meanwhile, in the illustrated example, the first connector 142 is illustrated as a male connector and the second connector 152 is illustrated as a female connector, but these connectors may be configured to be opposite to each other.

6 is a perspective view illustrating a coupling structure of an LED pixel unit and a strip, and shows a state in which the LED pixel unit 100 is fastened to the strip 300. The strip 300 is a frame extruded aluminum or the like into a predetermined length. As shown, a pair of engaging holes 312 are formed on the strip 300 at predetermined intervals corresponding to the engaging portions 114 of the LED pixel unit 100. Here, when the slide pieces 116 on both sides of the floodlight cover 110 shown in FIG. As the 114 is caught by the catching hole 312, the LED pixel unit 100 may be coupled onto the strip 300.

This coupling structure allows the LED pixel unit 100 to be easily coupled without any other means such as adhesive or double-sided adhesive tape. In addition, since the LED pixel unit 100 can be easily separated by pushing the finger piece 116, the maintenance of the LED pixel unit 100 becomes convenient.

Referring to FIG. 6, the top and bottom of the strip 300 are provided with an upper awning 302 and a lower awning 304 protruding forward. The upper shade 302 and the lower shade 304 may protect the LED pixel unit 100 and prevent the light emitted from the LED pixel unit 100 from being dispersed in the vertical direction. A coupling groove 306 is formed at the rear of the strip 300 up and down, and the rear cover 320 is coupled as shown here. The rear cover 320 is convexly formed on the rear side, so that the installation space of the LED pixel unit 100 can be sufficiently secured. In addition, irregularities are formed on the rear side of the rear cover 320 to form the heat dissipation unit 322. The heat dissipation unit 322 circulates heat of the LED pixel unit 100 with the outside air to radiate heat.

FIG. 7 is a diagram illustrating a connecting line coupling structure in a strip unit, and illustrates an example in which different strips are interconnected. Referring to FIG. 7, the LED strips are connected to both ends of the connection line 202 and the end of the connection line 202 is equipped with a connection line connector 204 as shown. The connector 204 has a connection terminal (not shown) of each of the connection lines 202 therein. The end of the connector 204 is provided with a screw coupling portion 206 formed with a male thread or a female thread. For example, male screw coupling portions and female screw coupling portions are formed at ends of the connecting line 202 drawn out to both sides of one strip 300, respectively.

As shown in the drawing, as the connection line connectors 204 are coupled to each other by screwing together, it is possible to prevent the connection of the connection line connecting portion from being disconnected or a poor contact caused by wind or vibration.

8 is a block diagram illustrating a configuration of a pixel error check system in the present invention, and shows the example in which the bar-shaped LED lighting apparatus described above is arranged in a plurality of columns to configure the facade display 400.

Each row of strips 300 is provided with a plurality of LED pixel units 100. However, in FIG. 8, instead of the LED pixel unit 100, the LED pixel controller 170 mounted on the printed circuit board for each LED pixel unit 100 is illustrated.

The LED pixel controller 170 controls LED lighting of the LED pixel unit 100 according to the control signal of the control board 500 as shown in FIG. 8. Specifically, the LED pixel controller 170 has a unique address. For example, the LED pixel controller 170 located at the top left has an address of "# 1-1". The LED pixel controller 170 located at the bottom right side has an address of "# M-M". These address names are simply named for explanatory purposes.

As shown, the LED pixel units 100 constitute a display having a resolution of M * N. The control board 500 controls each of the LED pixel units 100 so that each LED pixel unit is displayed as a unit pixel having R, G, and B values. Accordingly, the facade display 400 can reproduce not only still images but also moving images.

8, the control board 500 communicates with an external monitoring device 600. The LED pixel controller 170 may be connected to the connection line 202 of the LED pixel unit 100, a disconnection state inside the LED 132, and a short circuit state inside the LED pixel unit 100 (eg, in a printed circuit board). Such as a short). The detected state information is transmitted to the monitoring device 600 through the control board 500.

The monitoring device 600 reads address information and status information from the status information received from the LED pixel controller 170. Therefore, the position of the LED pixel unit 100 in which an abnormality occurs can be accurately determined, and can be quickly detected and maintained when an abnormality such as a dead pixel occurs.

The invention described above is susceptible to various modifications within the scope not impairing the basic idea. That is, the above embodiments should all be interpreted as illustrative and not restrictive. Therefore, the protection scope of the present invention should be determined according to the appended claims rather than the above-described embodiments, and if the components defined in the appended claims are replaced by equivalents, they should be regarded as belonging to the protection scope of the present invention.

100: LED pixel unit 110: floodlight cover
112: light refractive means 114: obstruction protrusion
116: bullet point 130: LED module
132: LED 134: fixing piece
136: fixing protrusion 138: fixing wedge
142: first connector 144: gasket
146: seating rib 150: terminal base
152: second connector 170: LED pixel controller
202: connecting line 204: connecting line connector
206: screw connection 300: strip
302: top sun shade 304: bottom sun shade
306: coupling groove 312: locking hole
320: rear cover 322: heat dissipation unit
400: facade display 500: control board
600: monitoring device

Claims (11)

In the bar-shaped LED lighting device having a structure in which a plurality of LED pixel units are connected by a connecting line and fixedly installed on a strip,
The LED pixel unit,
An LED module accommodating at least one LED and a printed circuit board on which a lighting control circuit of the LED is printed, and a rear surface of the LED module having a first connector connected to the printed circuit board; And
A second connector detachably connected to the first connector is provided outside the housing, and the terminal base is impregnated with a connection between the connecting line and the second connector in the housing.
Bar type LED lighting device comprising a. The method of claim 1,
Bar-shaped LED lighting device that the gasket is interposed between the rear surface of the LED module and the front surface of the terminal base. The method of claim 2,
A mounting rib is placed on the rear surface of the LED module to accommodate the outer portion of the terminal base, and a fixing wedge protrudes from the rear side of the terminal base to an end portion of the fixing piece which is placed on both sides of the mounting rib. And the gasket is interposed between the seating rib and the first connector. The method of claim 1,
The front side of the LED module is coupled to a transparent cover for transmitting the light of the LED, the bar type LED lighting apparatus is provided with a light refractive means for refracting the light of the LED at a predetermined angle on the transparent cover. The method of claim 4, wherein
The light refraction means is a bar-shaped LED illumination device composed of any one of a convex lens, a concave lens, and a planar lens. The method of claim 4, wherein
On both sides of the translucent cover, a tangy piece is extended to the front side of the translucent cover, and a protruding protrusion is formed at the front end of the tangy piece in a direction perpendicular to the tangy piece,
A locking hole is formed on the strip at a position corresponding to the locking protrusion,
Bar-type LED lighting device that the engaging projection of the floodlight cover is elastically coupled to the locking hole to fix the LED pixel unit to the strip. The method of claim 1,
And a connecting line connector for interconnecting connecting lines formed at ends of the connecting line drawn out at both ends of the strip, wherein the connecting line connector includes a screw connection part having male or female threads formed at an end thereof. The method of claim 1,
The strip has a top and bottom awning protruding forward at the top and bottom, respectively, to protect the LED pixel unit,
The rear of the strip bar-shaped LED lighting device is coupled to the rear cover is formed with a heat dissipating portion on the back side. The LED display device of claim 1, wherein a plurality of bar LED lighting devices of any one of claims 1 to 8 are combined. 10. The method of claim 9,
And a control board for individually controlling the LED pixel units so that each LED pixel unit is individually displayed as a unit pixel having R, G, and B values. The method of claim 10,
And a monitoring device in communication with the control board for monitoring a state of the LED pixel unit.
And an LED pixel controller installed in each of the LED pixel units detects at least one of a connection state of a connection line, a disconnection state of the LED, and a short circuit state inside the LED pixel unit and transmits the state to the control board.

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