KR100540592B1 - Led display device for signboard using a color led and connecting method thereof - Google Patents

Abstract

Disclosed are an LED display device of a CHANNEL billboard using a color LED and a connection method thereof. According to the invention, the base panel; It is fixedly installed on the base panel, receives a standardized serial control signal, converts it into a parallel control signal, and includes an enable start signal, line selection information, unit selection information, pixel selection information, and color selection information from the parallel control signal. Extract enable information, determine whether the enable information and the pre-stored pixel unique information are the same, control the lighting of the light emitting element constituting the pixel, and bypass the serial control signal. Multiple pixels; And a controller which selects a pixel to be controlled to be lit based on respective pixel unique information of the plurality of pixels, and outputs a serial control signal for determining a color of the selected pixel.

Therefore, the present invention eliminates the difficulty of installation due to the wiring of the pixel unit by connecting a large number of pixels corresponding to the shape of the advertisement image, and at the same time, the control of the pixel unit is directly performed, resulting in a fast response speed. It is easy to cope with the change in shape of the advertisement image, and thus the installation cost of the advertisement display board is low.

LED, Advertising, Image, Display, Channel

Description

LED display device of zannel advertising board using color LED and its connection method {LED DISPLAY DEVICE FOR SIGNBOARD USING A COLOR LED AND CONNECTING METHOD THEREOF}

1 is a perspective view illustrating a pixel according to the present invention.

2 is a cross-sectional view of FIG. 1.

FIG. 3 is a diagram illustrating the pixel of FIG. 1 for each function.

4 is a configuration diagram illustrating the pixel connection of FIG. 1.

5 is a use state diagram showing an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

115: LED element 117: connecting line

201: first PCB 203: second PCB

205: second connector 207: dip switch

301: control unit 303: driver

305: serial / parallel converter 307 to 311: comparator

317: amplifier 325: data bus

The present invention relates to an LED display, and more particularly, to form a device in the pixel (PIXEL) unit, and to display a device for each device through serial communication between the devices, the color LED is easy to configure and control the display panel The present invention relates to an LED display device of a CHANNEL billboard and a connection method thereof.

In general, rooftop-type large advertisements used as outdoor advertisements include billboards, panaplexes, trivisions, etc., and large LED-type advertisements have recently been introduced. Billboard advertising is a way of designing the content of the advertisement in a paint (Paint) on a large plane, there is a freedom of expression, but there is a lack of sophistication, the use frequency is falling. The Panaflex has a skeleton of aluminum or stainless steel and wraps silk printed with advertisement information at the upper end thereof, and includes a plurality of fluorescent lamps in the skeleton so that the advertisement information is highlighted at night. have.

In addition, the tri-vision (Tri-vision) method is to form a three-dimensional advertising by the visual effect by printing the three advertisements on one surface of the advertising surface overlapping 120 ° C angle. Therefore, Tri Vision is characterized by being used for small-sized advertising. In addition, the advertisement using Zannel or SCSI is equipped with a separate neon according to the image shape of the Zannel or SCSI after implementing the Zannel or SCSI according to the advertisement image. Such an advertising method uses advertisement information implemented in the above-described channel or SCSI, and increases the visual effect by turning on and off neon when the surroundings are dark.

In recent years, neon advertisements are being used as large outdoor advertisements, and use monochromatic colors. Neon can express 48 colors, but it does not match the trend of advertisement of the times. This is because the width of the expression is limited because the neon advertisement bends the neon tube to express the advertisement image. It is also because 48 colors cannot express many images.

On the other hand, LED (LED) advertising is used to implement a dynamic image to increase the advertising efficiency. Multiple high-brightness LEDs are mounted in a predetermined matrix form, turning off each LED through matrix X, Y axis control. At this time, the matrix can be used for large-scale video advertising due to the fast response speed of the LED, and the frequency of use is improved due to the free color conversion. However, such LED advertisement is difficult to control the pixel unit after installation because the LED itself must be installed in one pixel unit of the screen.

In addition, the LED control on the currently used advertising panel is based on a programmed control of a microcomputer (not shown) having a large number of output ports. Micom enables all of the LEDs on a straight line (the X- or Y-axis of the matrix). Then, only the specific LED to be displayed is selected to perform on / off switching control. This causes the LEDs on the line to emit light pixel by pixel.

However, such a control method scans the synchronized control, that is, the matrixed screen for each line of a predetermined time unit, so that an unnecessary time delay occurs regardless of the LED's flashing. The above time delay causes a problem of deteriorating the image quality by delaying the image processing time for displaying the advertisement information.

The present invention has been made to solve the above problems, and an object of the present invention is to control the LEDs in the pixel unit by serial communication, so that the connections between the LEDs are easy and the wiring with a plurality of LEDs and control devices is simplified. Accordingly, the present invention provides an LED display device of a CHANNEL billboard using color LEDs for efficiently installing and controlling a system, and a method of connecting the same.

An LED display device of a CHANNEL billboard using a color LED according to an aspect of the present invention for achieving the above object is a base panel; It is fixedly installed on the base panel, receives a standardized serial control signal, converts it into a parallel control signal, and includes an enable start signal, line selection information, unit selection information, pixel selection information, and color selection information from the parallel control signal. Extract enable information, determine whether the enable information and the pre-stored pixel unique information are the same, control the lighting of the light emitting element constituting the pixel, and bypass the serial control signal. Multiple pixels; And a controller configured to select a pixel to be controlled to be lit based on respective pixel unique information of the plurality of pixels, and output a serial control signal for determining a color of the selected pixel.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view illustrating a pixel PIXEL which is an LED display device according to the present invention. The pixel 101 has a housing 109 of a predetermined shape, and has a shade 121 in which one side of the housing 109 extends in the vertical direction. The shade 121 is to block sunlight. The extension length of the shade 121 is set within a range that does not affect the LED light emission when a plurality of pixels 101 are densely installed.

Fixtures 107 are formed on both sides of the housing 109 for connecting the pixels 101 with respect to the shade 121, and have fasteners 113 on both sides of the connector 107. 111) is attached. A plurality of high brightness R, G, B LED (LED) elements are mixed and arranged on an upper surface of the pixel 101 on which the shade 121 is mounted, and fixedly installed by the support panel 119.

The connection end 105 of the first connector 103 is introduced into the connector 107. The connection terminal 105 is connected to a connection line 117 of a predetermined length to transmit a serial signal for controlling the lighting of the LED element. Therefore, the connection line 117 of the predetermined length is coupled to the first connector 103 having a connection end 105 at each end.

Meanwhile, in order to improve productivity of the pixel 101 according to the present invention, a connection line may be extended to one side connector 107. And a connector having a connecting end is connected to the end of the connecting line. Therefore, the pixel and the connecting line may be implemented as an integrated pixel to facilitate the connection between pixels. In addition, if necessary, the length of the connection line may be used in a plurality of kinds.

FIG. 2 shows a cross section of the pixel 101, the housing 109 having a number of LED elements 115 fixedly mounted by the support panel 119 to its inner top. The plurality of LED elements 115 are coupled onto a first PCB 201 having an LED lighting pattern. The second PCB 203 for providing the LED lighting control signal to the first PCB 201 is connected to the first PCB 201. Second connectors 205 are respectively provided on the bottom surface of the second PC 203. The second connector 205 is installed in the housing 109 and is fixedly installed to facilitate attachment and detachment with the connection end 105.

The second PC 203 includes a control IC (IC) having a control program and a plurality of switching elements (unsigned), and an address setting dip switch (DIP SWITCH; 207) for enabling a specific pixel. It includes. The first and second PCS 201 and 207 may reduce the volume of the pixel 101 by using integrated PCs according to the integration of circuits or layers of the PCS pattern.

FIG. 3 is a diagram illustrating an internal configuration of the pixel 101 shown in FIG. 1. The second connector CN2 205 is a connection terminal for receiving a serial signal transmitted from another pixel 101. The serial signal includes an enable start signal, a line select signal, a unit select signal, a pixel select signal, a color select signal, a synchronization signal, and an enable end signal to select a corresponding pixel. The third connector CN3 205 is connected in parallel with the second connector 205 and used as a connection terminal for providing the serial signal to the outside.

The line selection signal, the unit selection signal, and the pixel selection signal are selection signals for selecting any one of the plurality of connected pixels 101. Here, the pixel is one display element, and the unit is a set group in which a plurality of pixels are connected. The line is a collection group in which a plurality of units are connected. Accordingly, the pixel selection signal is a signal for selecting any one of the plurality of pixels. The unit selection signal is a signal for selecting any one of the plurality of units. The line selection signal is a signal for selecting any one of a plurality of lines.

The controller 301 is composed of a serial / parallel converter 305, a first comparator 307, a second comparator 309, a third comparator 311, and a memory 315. The serial / parallel converter 305 receives the serial signal and converts the serial signal into parallel data, and then mounts the parallel data on the data bus 325. The data bus 325 is divided into a line selection signal, a unit selection signal, a pixel selection signal, and a data bus for each color selection signal. The line selection signal is applied to the first comparator 307 and the unit selection signal is applied to the second comparator 309. The pixel selection signal is applied to the third comparator 311, and the color selection signal is applied to the driver 303 which has not been described.

The memory 315 is connected to the second comparator 309 to extract unique unit selection information corresponding to the pixel from the input unit selection signal. Also, the memory 315 is connected to the third comparator 311 and extracts unique pixel selection information corresponding to the pixel from the input pixel selection signal. The dip switch 207 is connected to the first comparator 307 to extract unique line selection information corresponding to the pixel from the input line selection signal.

The driver 303 is enabled according to the line selection information, unit selection information, and pixel selection information extracted respectively. The enabled driver 303 is connected to the data bus 325 to receive the color selection signal. The color selection signal turns on any one or more of the plurality of LED elements 115 connected to the output terminal of the driver 303.

The amplifier 317 amplifies the serial signal provided from the second connector CN2 205 to a predetermined level and provides it to the third connector CN3 205. The non-described sync signal line 323 has a pulse shape of a predetermined frequency and is provided to a plurality of comparators 307-311 including the serial / parallel converter 305 and a memory 315. From this, synchronous control is performed between systems.

The operation of the present invention will be described as follows.

A system controller (not shown) provides a serial signal through the second connector 205. The serial signal starts with the enable start signal, and is a line select signal, a unit select signal, a pixel select signal, a color select signal, and an enable end signal. At this time, the synchronization signal is provided separately.

The serial signal is applied in parallel to the amplifier 317 through the second connector 205. The amplifier 317 amplifies to a predetermined level, that is, a potential level for supplying the same power to a plurality of pixels. Here, amplification is current amplification, which performs buffering. The amplified signal is applied to the connection line 117 through the third connector 205. At the same time, the serial signal is supplied to the serial / parallel converter 305. Serial-to-parallel converter 305 detects an enable start signal. Subsequent data, that is, line selection information, unit selection information, pixel selection information, and color selection information is received.

The serial / parallel converter 305 detects an enable end signal and converts the received selection information into parallel data. The parallel data is provided to the first comparator 307 through the third comparator 311 and the driver 303 via the data bus 325. Data, which is a line selection signal, is applied to the first comparator 307, and unit selection data is applied to the second comparator 309. Pixel selection data is applied to the third comparator 311, and color selection data is applied to the driver 303.

The first comparator 307 receives line selection information for line selection from the dip switch 207 and compares the line selection data. As a result of the comparison, when it is determined that the line selection information and the line selection data are the same, the first comparator 307 generates an enable signal 327 for triggering the second comparator 309. If it is determined that the line selection information held by the dip switch 207 is not the same as the line selection data, the first comparator 307 disables the second comparator 309 and then the third comparator ( 311) and driver 303 remain disabled.

Meanwhile, when the second comparator 309 is enabled, the second comparator 309 receives unit selection information from the memory 315 based on the synchronization signal. The second comparator 309 compares the unit selection information with the unit selection data flowing from the data bus 425. As a result of comparison, when the unit selection information and the unit selection data are the same, the second comparator 309 generates an enable signal 327 for turning on the third comparator 311.

However, when the unit selection information and the unit selection data are different, the third comparator 311 and the driver 303 are disabled so that the LED element 115 of the pixel 101 remains off. On the other hand, when the third comparator 311 is enabled by the second comparator 309, the driver 303 is enabled by the enable signal 327.

The enabled driver 303 may receive color selection information provided from the serial / parallel converter 305. The color information is information for turning on at least one of the plurality of LED elements 115. Therefore, the LED element 115 of the pixel 101 is turned on based on the color information. The LED element 115 is turned on by being supplied with power by a switching element, for example, a contactless switching element such as a transistor.

As a result, the LED element lighting signal input to the second connector 205 determines whether or not the corresponding pixel 101 is enabled by the controller 301. At the same time, by amplifying and outputting the same LED element lighting signal to the third connector 321, mutual serial communication due to serial connection between the pixels 101 is achieved.

As described above, the system control apparatus includes the enable start signal, the line selection signal, the unit selection signal, the pixel selection signal, the color selection signal, and the enable end signal described above to control a plurality of connected pixels, respectively. And a synchronization signal. At this time, the line selection information, the unit selection information, the pixel selection information and the color selection information are set by the administrator or the manufacturer. The set pixel unique information is stored in the memory 315 and transmitted as a serial signal under the control of a system controller.

The serial signal may be provided with a predetermined protocol to emphasize the simplicity of the pixel control program.

4 is a diagram illustrating an example of connection of pixels. As shown, eight pixels 401 may constitute one unit 403. The eight units 403 form one line 405, and the plurality of lines 405 implement the shape of the advertisement image. Therefore, in order to select and light one pixel, first, a line selection signal for line selection is required. A unit selection signal for selecting a unit and a pixel selection signal for selecting a final pixel will be required.

The line 405 is fixedly installed according to the shape of the advertisement image. The plurality of lines 405 installed can be controlled line by line, unit by unit or pixel by the system controller. It also selects the color for each pixel. Accordingly, the line 405 provided in the main part of the advertisement image can be turned on, blinking, and color changed according to the control pattern. In addition, the non-consecutive advertisement image may be installed in the unit 403 or the pixel 401 to broaden the application range of the present invention.

5 is a view showing an example of use of the present invention. As shown, the advertising channel 501 has a predetermined shape and a plurality of pixels 503 fixed to the inner side of the channel 501. The first pixel 503 receives a serial signal from the signal line 509. Each pixel 503 is interconnected via a connection line 505.

The plurality of pixels 503 is configured according to an advertisement image formed from the channel 501. The plurality of pixels 503 are turned on or off based on the control information flowing through the signal line 509. The illustrated figure shows a portion of an advertisement and illustrates a "A" type channel. By controlling the plurality of pixels, the control program mounted on the system controller can gradually turn on from the upper end to the lower end of the "A". Or gradually change the color to highlight the advertising image.

On the other hand, the system control device can be interlocked with the temperature sensor and humidity sensor for measuring the ambient temperature and humidity, it is possible to control whether or not the light emission of the advertisement image according to the temperature / humidity.

As described above, the LED display device of the CHANNEL billboard using the color LED according to the present invention and a connection method thereof include a display element provided for each of R, G, and B in units of pixels, and the serial flows into each pixel. The selection of the corresponding pixel is determined based on the signal, and at the same time, as the serial signal is amplified and transmitted to another pixel, a large number of pixels corresponding to the shape of the advertisement image are connected in series so In addition to eliminating the difficulty, the control of the pixel unit is directly performed, and the response speed is not only high, but also it is easy to cope with the shape change of the advertisement image, so that the installation cost of the advertisement display board is low.

What has been described above is only one embodiment for implementing the LED display device and the connection method thereof according to the present invention, the present invention is not limited to the above embodiment, as claimed in the following claims Without departing from the gist of the invention, anyone of ordinary skill in the art to which the present invention will have the technical spirit of the present invention to the extent that various modifications can be made.

Claims (6)

Base panel; It is fixedly installed on the base panel, receives a standardized serial control signal, converts it into a parallel control signal, and includes an enable start signal, line selection information, unit selection information, pixel selection information, and color selection information from the parallel control signal. A plurality of pixels for extracting enable information, performing lighting control of a light emitting device based on the enable information and pre-stored pixel unique information, and bypassing the serial control signal; And CHANNEL using a color LED comprising a controller for selecting a pixel to be controlled for lighting based on each pixel unique information of the plurality of pixels and outputting a serial control signal for determining the color of the selected pixel. LED display device of billboard. The LED display device of a CHANNEL billboard using a color LED according to claim 1, wherein the base panel is a channel. The method of claim 1, wherein the pixel is A driver for turning on the light emitting device according to a lighting control signal; A control unit that holds the selection information, extracts the enable information from the serial control signal, compares the enable information with the selection information, and generates the lighting control signal based on a comparison result; And LED display device of the CHANNEL advertising board using a color LED, characterized in that consisting of; amplification unit for amplifying and outputting the serial control signal. 4. The housing of claim 3, further comprising: a connection port for fastening with a connection terminal for inputting and outputting the serial control signal to one side and an opposite surface thereof, the housing for fixing and installing the at least one light emitting element; LED display device of the CHANNEL billboard using a color LED, characterized in that it further comprises a holder for fixing the housing is installed as. The method for connecting the LED display device according to claim 1, At least two LED display devices, each of which is controlled to be lit in accordance with different pixel unique information, are connected in series, and at least two or more serially connected LED display devices are connected in parallel, and are provided from a controller of each LED display device. A method of connecting an LED display device, wherein each serial control signal has the same period. The method of claim 5, wherein the serial connection of the LED display device is composed of a unit (UNIT) consisting of eight of the LED display device, and a line (LINE) consisting of eight of the unit (UNIT), Parallel connection is a connection method of the LED display device, characterized in that consisting of 256 lines.

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