KR102237863B1 - Large LED signboard system to monitor current consumption to prevent fire - Google Patents

Abstract

A large LED electronic signboard system for preventing a fire by monitoring an amount of consumed current of the present invention is a module added to prevent a fire. The large LED electronic signboard system comprises: a current input unit receiving a current for driving a driver module from a power supply device; a current output unit constituted with a plurality of current output terminals supplying the current inputted through the current input unit to each driver module, wherein each current output terminal includes a switching means; a control signal output unit performing data communication with a controller unit; and a control unit monitoring the amount of a current of each current output terminal of the current output unit, inputting a control signal to the controller unit through the control signal output unit, and blocking an output of the current output terminals through the switching means when the amount of the current of each current output terminal is measured over the set current amount. The present invention has an effect of immediately detecting a situation, which may cause a fire, through current monitoring, an effect of operating the large LED electronic signboard system in an emergency operation state when an abnormality of an LED light emitting unit is detected, and an effect of easily and additionally installing components to the large LED electronic signboard system, which has already been installed.

Description

Large LED signboard system to monitor current consumption to prevent fire}

The present invention relates to a large LED display system that is installed on the road and provides various information such as traffic information, weather information, air quality information, promotional video, etc. by outputting text, images, and videos, which occur due to overheating or overcurrent. It relates to a large LED display system that prevents fire and monitors and controls the operation of the electronic display system so that the large LED display can be safely driven.

As shown in the drawing showing an example of the large LED display system in FIG. 1, a large LED display system, generally referred to as an'outdoor display board', is installed in a place where vehicles and people pass a lot, such as a roadside or an area of a shopping mall. It is a kind of large-scale display means that provides various information such as weather information, promotional images and images, and generally uses an LED element as a light emitting device for high luminance.

In particular, the large LED display system may be installed in various places as shown in FIG. 1, but it is installed on the side of a road and has high relative effectiveness as a means for providing traffic information, so it is widely used as a means for providing traffic information.

Such a large-sized LED display system 1 forms an LED light emitting unit by connecting a plurality of plate-shaped LED (LED) pixel panels formed in a matrix structure of pixels composed of one or a plurality of LED elements in a plane. The LED pixel panel is controlled to emit light by a plurality of driving driver modules, and provides high luminance compared to other large-sized display means, thereby providing sufficient discrimination even during the daytime.

That is, as shown in the drawing for explaining the configuration of the large LED sign system 1, the large LED sign system 1 as shown in FIG. 1 is generally included in the LED sign housing 10 forming the exterior. The LED light emitting unit 20 is installed so as to be exposed, and means for driving the LED light emitting unit 20 are installed inside the LED signboard housing 10.

The plurality of LED pixel panels 210 forming the LED light-emitting unit 20 can display text, images, and videos by a signal for turning on/off the LED element of the LED pixel panel 210 from the driving driver module 30. Express.

In addition, the controller unit 40 and the controller unit 40 and the driving driver module 30 outputting output data that controls the output of the driving driver module 30 and outputting control signals for various driving of a large LED display board. ), including a DC power supply device 50 (SMPS) for supplying DC power.

On the other hand, such a large LED sign system 1 is always exposed to rain and wind and direct sunlight because most of it is installed outdoors, as shown in the drawing showing an accident example of the large LED sign system in FIG. 3, and in particular, the exposed LED light emitting unit The LED pixel panel 210 of (20) is easily deteriorated.

In the case of the LED light emitting unit 20 in which some circuits are short-circuited due to aging, the short circuit portion is easily overheated or sparks are generated due to the supply of high current, thereby causing a fire in the large LED display system.

In addition, problems such as a short circuit or short circuit may occur due to the inflow of rainwater, etc., and these problems are acting as a reason for causing a fire in the large LED display system 1.

As such, the large LED display system 1 is always exposed to fire, and in general, the large LED display system 1 is installed in a place where vehicles or people pass a lot, which causes secondary accidents caused by fire. Although the probability is very high, the reality is that there are no other preparations.

Specifically, the large LED display panel 1 includes several to dozens of LED pixel panels 210 on a plane in which hundreds of LED elements are mounted in a matrix structure and each LED element is turned on/off. As the LED light-emitting unit 20 is configured, a considerable amount of current is consumed. Therefore, the SMPS 50, which is a DC power supply means, supplies a large amount of current to the LED pixel panel 210. In the case of a short circuit due to aging or a short circuit due to rainwater in the pixel panel 210, the risk of ignition due to high heat or spark is very high. There is a problem in operation.

Application No. 10-2018-0055404 taking into account the problem of fire occurrence of the large LED display 1 as described above, the name of the invention'electric signboard having a fire detection function by a fire smoke sensor' has been disclosed.

As shown in the representative drawing of the name of the invention in Fig. 4 Application No. 10-2018-0055404, the'electronic board having a fire detection function by a fire smoke sensor', various information input using the light of the LED is provided to the public. It is an electronic sign that is transmitted for convenience, and in particular, if a fire occurs in a predetermined part of the sign, it is detected and immediately taken to prevent the fire from spreading to the entire sign. A body member 100 having a space therein; A screen member 200 for visually transmitting various information according to a signal input from the front of the main body 100 to the outside by emitting light using a plurality of LEDs; A control panel 310 is provided so as to transmit and receive electrical signals to and from the screen member 200. In the event of a fire, a fire smoke sensor 320 is used to provide a signal for detecting fire to notify the fact of the fire, and at the same time, the control panel ( 310) is used to control the operation of the screen member 200, and is configured to control the operation of the electronic sign based on the values obtained by measuring the temperature and humidity of the electronic sign in real time using a sensor. As a result of the improvement, it is possible to prevent a fire in advance due to the high temperature and humidity of the electronic display board, and by measuring the temperature and humidity of the electronic display panel, it is possible to predict the aging of the LED module and perform a preliminary replacement before the fire. In addition, when a fire occurs on the signboard, a smoke detection sensor is provided to improve the structure, so that the fire is detected by a smoke detection sensor and immediate action can be taken. It has the effect of preventing it from losing and spreading to a large fire.

However, the prior art is characterized by predicting the aging of the LED module so that fire can be prevented in advance by measuring the temperature and humidity of the electric sign in real time, but predicting the aging of the LED module through the actual temperature and humidity of the electric sign. There is a problem in which it is inaccurate and difficult to judge at the same time, and for this reason, a specific method for predicting the aging of the LED module through temperature and humidity has not been disclosed in the prior art.

In addition, since the prior art describes only a method of taking immediate action through a fire extinguishing means or the like when a fire occurs without specific consideration of the cause of the fire, there is a problem that it is difficult to specifically prevent the actual fire.

Accordingly, there is a need for a large LED display system capable of immediately detecting and coping with the risk of ignition by immediately recognizing a short circuit in a circuit due to an aging LED module.

In addition, there is a demand for a large LED display that actively responds to the heat generation problem of a large LED display.

The present invention was invented to solve the problems of the prior art as described above, and a situation in which a fire may be caused due to the aging of the LED pixel panel of the LED light emitting part of the large LED display system can be immediately detected through current amount monitoring. , An object of the present invention is to provide a large LED display that is operated in an emergency operation mode when an abnormality in the LED light emitting unit is detected.

In addition, an object of the present invention is to provide a large LED display that can check the status of the LED light emitting unit on a regular or irregular basis through a safety inspection mode capable of inspecting the state of a large LED display system.

In addition, an object of the present invention is to provide a large-sized LED display system that provides improved durability and energy efficiency through relatively high heat dissipation efficiency of the large-sized LED display system.

Other objects of the present invention can be understood through the features of the present invention, can be more clearly understood through the embodiments of the present invention, and can be realized by means and combinations shown in the claims.

In order to achieve the problem to be solved by the present invention as described above, the present invention has the following technical characteristics.

In the present invention, the large LED display system for preventing fire by monitoring the amount of current consumed forms the exterior of a box-shaped structure made of a metal material, and means for driving the LED light-emitting part by exposing the LED light-emitting part to the front or front and rear. An electric signboard enclosure made of a structure installed inside; An LED light-emitting unit installed on the front or both sides of the electric signboard housing and configured to combine a plurality of LED pixel panels made of LED light-emitting elements into a plane to form an output screen of a square plane; A plurality of driving driver modules outputting a signal for turning on/off the LED light emitting element of the LED pixel panel according to an image signal input from the controller unit; A controller unit for inputting an image signal for outputting content output through the LED light emitting unit to the driving driver module; A data communication unit that is included in the controller unit and connects to an information communication network, and transmits and receives data to and from an external information communication device through data communication; A DC power supply unit for receiving external AC power and changing it into DC power for supplying; A current input unit receiving current from the DC power supply unit; A current output unit comprising a plurality of current output terminals supplying the current input through the current input unit to each driving driver module, each current output unit having a switching means; A control signal output unit performing data communication with the controller unit; And monitoring the current amount of each current output terminal of the current output unit, inputting a control signal to the controller through the control signal output unit, and when the current amount of each current output terminal is measured to be more than a set current amount, the output of the current output terminal is output to the And a control unit that blocks through a switching means.

In addition, the current input unit, the current output unit, the control signal output unit, and the control unit of the large LED display system for preventing fire by monitoring the amount of current consumption of the present invention are formed in the form of a board formed on a single circuit board. .

In addition, the control unit of the large LED display system for preventing fire by monitoring the amount of current consumption of the present invention outputs an alarm signal to the controller unit when an overcurrent flows in the large LED display system, and the controller unit generates the alarm signal. And outputting through the data communication unit.

In addition, the control unit of the large-sized LED display system for preventing fire by monitoring the amount of current consumed according to the present invention relatively lowers the driving output of the LED light-emitting unit through the controller unit to induce a lower luminance of the LED light-emitting unit. It is done.

In addition, the control unit of the large LED display system for preventing fire by monitoring the amount of current consumed according to the present invention outputs a safety inspection mode signal to the controller unit so that the controller unit outputs an inspection screen at maximum luminance, and each of the current output units It is a technical feature to monitor the amount of current at the current output terminal to determine the presence or absence of an abnormality in each LED pixel panel.

In addition, the control unit of the large LED display system for preventing fire by monitoring the amount of current consumed according to the present invention includes an internal temperature measurement sensor that measures the internal temperature of the large LED display housing, and the internal temperature detected by the internal temperature measurement sensor When is higher than a set internal temperature setting value, inducing a driving output of the LED light-emitting unit to be relatively lowered through the controller unit to lower the brightness of the LED light-emitting unit.

In addition, the signboard enclosure of the large LED signboard system for preventing fire by monitoring the amount of current consumption of the present invention is coupled to a lower surface, and an opening portion having a plurality of open shutters automatically opened and closed by an electric motor; further comprising: It is characterized by a technical feature.

In addition, the present invention monitors the amount of current consumption and prevents fire, the electronic signboard enclosure of the large-sized LED signboard system is coated with a heat dissipating paint; it is a technical feature.

In addition, the display panel housing of the large LED display system for preventing fire by monitoring the amount of current consumption of the present invention is coupled to the upper portion of the display panel to form a shade by blocking sunlight; the technical feature further comprises.

The present invention can accurately and immediately detect a situation that may cause a fire due to deterioration, etc. in a part of the LED light emitting part of a large LED display system through the solution to the above problem, through monitoring the amount of current consumption, and an abnormality in the LED light emitting unit. When this is detected, there is an effect that the large LED display system can be safely operated in the emergency operation mode.

In addition, according to the present invention, it is possible to check the state of the LED light emitting unit on a regular or irregular basis through a safety inspection mode capable of inspecting the state of a large LED display system, thereby preventing failures or accidents in advance.

In addition, the present invention improves durability and energy efficiency through relatively high heat dissipation efficiency of the large LED display system, and when the internal temperature of the display enclosure is excessively high, the operation of the large LED display system can be operated in a low heat operation mode. There is an effect that can be.

Other effects of the present invention can be understood through the features of the present invention, can be more clearly known through the embodiments of the present invention, and can be exerted by means and combinations shown in the claims.

1 is a view showing an example of a large LED display system,
2 is a view for explaining the configuration of a large LED display system,
3 is a view showing an accident example of a large LED display system,
Figure 4 is a representative drawing of the title of the invention of Application No. 10-2018-0055404,'An electronic signboard having a fire detection function by a smoke sensor';
5 is a view for explaining a large LED display system for preventing fire by monitoring the amount of current consumed in the present invention;
6 is a view for explaining an electric sign enclosure of a large LED sign system for preventing fire by monitoring the amount of current consumed according to the present invention;
FIG. 7 is a view for explaining an embodiment of an electronic sign board enclosure of a large LED sign system for preventing fire by monitoring the amount of current consumed according to the present invention;

For a detailed description of the present invention to be described later, reference is made to the accompanying drawings, which illustrate specific embodiments in which the present invention may be practiced. These embodiments are described in detail sufficient to enable a person skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different from each other, but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the present invention in relation to one embodiment. In addition, it should be understood that the location or arrangement of individual components in each disclosed embodiment may be changed without departing from the spirit and scope of the present invention. Accordingly, the detailed description to be described below is not intended to be taken in a limiting sense, and the scope of the present invention is limited only by the appended claims along with all scopes equivalent to those claimed by the claims. Like reference numerals in the drawings refer to the same or similar functions over several aspects.

In the present invention, the large LED display system for preventing fire by monitoring the amount of current consumed is an invention related to the large LED display system 1 as shown in Figs. 1 and 2, and in Fig. 5, the present invention monitors the amount of current consumed to prevent fire. As shown in the drawing for explaining the large-sized LED display system, the electronic display housing 10, the LED light emitting unit 20, the driving driver module 30, the controller unit 40, the data communication unit 50, the DC power supply unit 60, a current input unit 70, a current output unit 80, a control signal output unit 90, and a control unit 95.

As shown in the figure for explaining the signboard body of the large LED signboard system that prevents fire by monitoring the current consumption of the present invention in FIG. 6, the signboard enclosure 10 is formed of a box-shaped structure made of a metal material. And, the front or front and rear are made of an open structure so that the LED light emitting unit 20 can be exposed to the front or front and rear.

In addition, a driving driver module 30 for driving the LED light emitting unit 20, a controller unit 40, a data communication unit 50, a DC power supply unit 60, a current input unit 70, a current output unit 80 ), the control signal output unit 90, and the control unit 95 are configured to be installed therein.

On the other hand, the electric signboard enclosure 20 is sealed to prevent rainwater from entering from the outside except for the portion where the LED light emitting unit 20 is installed, so that the LED light emitting unit 20 or a DC power supply unit 60 that generates severe heat generation. ), the heat generated by the heat cannot be easily discharged to the outside, so that the internal temperature of the signboard enclosure 20 rapidly increases, and as shown in FIG. 6, a large LED signboard system according to the present invention ( It is preferable that the heat dissipation paint 11 is applied to the electronic board housing 10 of 100).

The heat dissipation paint 11 is a special heat shielding paint that prevents heating due to infrared rays due to high reflectance of sunlight or physically consumes heat from sunlight, and is used for heat dissipation in various industries such as buildings, transformer enclosures, and communication unit enclosures. It can be a conventional heat dissipation paint and is not limited to any specific special paint.

In addition, the signboard enclosure 10 of the large LED signboard system 100 according to the present invention is shown in Fig. 7 in the drawing for explaining an embodiment of the signboard enclosure of the large LED signboard system that prevents fire by monitoring the amount of current consumed in the present invention (a It is preferable to further include an opening portion 12 having a plurality of open shutters, which are coupled to the lower surface (bottom surface) of the electric signboard housing, and are automatically opened and closed by an electric motor as shown in ).

The opening part 12 is formed on the lower surface of the electric signboard housing 10, as shown in FIG. 7(a), so that rainwater, etc., from outside even when the open shutter 12-1 is open for heat dissipation. While preventing inflow, the entire lower surface of the electric signboard housing 10 is opened or closed through the opening and closing operation of the plurality of open shutters 12-1.

The operation of the open shutter 12-1 is automatically driven by an electric motor, and the electric motor is controlled by an electric motor control signal from the controller 95.

In addition, the billboard housing 10 of the large LED billboard system 100 according to the present invention is coupled to the upper portion of the billboard housing 10, as shown in FIG. 7(b), and blocks sunlight. It is preferable to further include a sunscreen plate 13 to form a shade.

Such a sunscreen 13 is made of a synthetic resin material or a metal material through which sunlight is not transmitted, and has a predetermined width to form them.

Therefore, the electric signboard housing 10 located in the shade formed by the sunscreen 13 can be prevented from being heated by direct sunlight because it is not exposed to direct sunlight, and furthermore, it is prevented from being directly exposed to rain or snow. In particular, it may play a role of protecting the exposed LED light-emitting unit 20.

Furthermore, the sunlight shielding plate 13 has an effect of increasing the discrimination or readability of an image output from the LED light-emitting unit 20 in a noon period in which sunlight is strong by forming a shade.

As shown in FIG. 5, the LED light-emitting unit 20 is installed on the front or both sides of the electric signboard housing 10, and is formed by combining a plurality of LED pixel panels 210 made of LED light-emitting elements in a plane. It forms a flat output screen.

As shown in FIG. 5, the LED light-emitting unit 20 combines a plurality of LED pixel panels 210 made of LED light-emitting elements into a plane to form a rectangular output screen P1.

On the other hand, the LED pixel panel 210 is a substrate on which an LED light emitting device forming N×N dots is mounted, and according to the output color of the LED pixel panel 210, one LED light emitting device is used for monochromatic output. In the case of a single dot, in the case of three-color output, two LED light-emitting elements with different luminous colors of red, blue, and green form one dot, and in the case of full color, three LEDs of blue, green, and red are emitted. The device forms one dot.

Such an N×N dot LED pixel panel 210 may be composed of 8×8 dots to 32×32 dots, preferably 16×16 dots (N=16), or 24×24 dots (N= It is preferable that it is any one of 24).

As shown in FIG. 5, the driving driver module 30 is installed for each LED pixel panel 210 or installed on a plurality of LED pixel panels 210 to constitute the LED light emitting unit 20. A signal for turning on and off the LED light emitting device of the LED pixel panel 210 is output.

The driving driver module 30 receives an image signal from the controller unit 40 and turns on and off each of the LED light emitting elements constituting the LED pixel panel 210 according to the received image signal, thereby generating an image from the LED light emitting unit ( 20).

On the other hand, the driving driver module 30 is a driving driver module added to drive each LED pixel panel 210 in a typical large LED display system 1, and is not limited to any specific driving driver module.

As shown in FIG. 5, the controller unit 40 is a means for outputting a video signal for outputting a predetermined video content through the output screen of the LED light emitting unit 20 to the driving driver module 30 As a result, a data storage means and a data processing means are included and are driven according to program logic, and various data are processed to control the overall driving of the large LED display system 100 according to the present invention.

As shown in FIG. 5, the data communication unit 50 is included in the controller unit 40 to access an information communication network, and provides an environment in which data transmission and reception can be performed with an external information communication device through data communication. do.

The DC power supply unit 60 supplies DC power to the controller unit 40 and the current input unit 70 as a means for receiving external AC power and converting it into DC power.

Such a DC power supply unit 60 may be a DC power supply device commonly referred to as'SMPS' used to supply DC power in a typical large LED display system, and is not limited to any specific DC power supply device.

As shown in FIG. 5, the current input unit 70 receives a current for driving the driving driver module 30 from the DC power supply unit 60.

That is, the driving driver module of a conventional LED display system receives direct DC power from the DC power supply unit 60, but the driving driver module 30 of the large LED display system 100 according to the present invention is the current input unit 70 DC power input through) is supplied through the current output unit 80.

The current input unit 70 has a circuit structure capable of sufficiently accommodating the amount of current output from the DC low source supply unit 60.

As shown in FIG. 5, the current output unit 80 includes a plurality of current output terminals 82 that distribute and supply the current input through the current input unit 70 to each driving driver module 30. And, each of the current output stage 82 has a switching means (84).

In this case, the number of the current output terminals 82 may be formed from as few as 4 to as many as 20 or more.

On the other hand, such a current output terminal 82 has a switching means 84 for blocking the current supplied to the driving driver module 30 in accordance with the control signal of the control unit 95, such a switching means 84 is a signal As a result, it may be a relay device that performs an operation of turning on/off wiring connection according to a signal.

Meanwhile, the switching means 124 may be various switching devices or electric devices capable of accommodating a high current amount from several amps to tens amps in addition to the relay device.

The control signal output unit 90 is a means for outputting a signal to transmit a predetermined control signal according to a control signal previously set in the controller unit 40, as shown in FIG. 5. The output unit 90 may be configured as a general signal output terminal including a plurality of pins for outputting a control signal, or may be a data input/output terminal for data communication.

As shown in FIG. 5, the control unit 95 monitors the amount of current at each current output terminal 82 of the current output unit 80, and controls the controller unit 40 through the control signal output unit 90. ), and when the current amount of each current output terminal 82 is measured to be equal to or greater than the set current amount, the output of the current output terminal 122 is cut off through the switching means 84.

As described above, the large LED display system 100 according to the present invention organically combines the above components to monitor the amount of current consumed by each LED pixel panel 210 in real time, so that the amount of current is abnormally excessive due to a short circuit. If supplied properly, it is judged as a short circuit or a risk of fire, etc., and the switching means 84 is used to cut off the DC power supply itself to prevent a fire that may occur due to a short circuit, etc. have.

As such, the large LED display system 100 according to the present invention accurately detects a short circuit or a short circuit in a relatively easy and accurate method, and immediately blocks the supplied high current, thereby causing a short circuit in the LED pixel panel 210, etc. It prevents fire by preventing ignition due to the occurrence of high heat.

Meanwhile, as shown in FIG. 5, the large LED display system 100 according to the present invention includes the current input unit 70, the current output unit 80, the control signal output unit 90, and the control unit 95. ) Is preferably formed on one circuit board 200 to form a board.

That is, it is preferable that the current input unit 70, the current output unit 80, the control signal output unit 90, and the control unit 95 are in the form of one module.

However, it is not necessarily limited thereto, and the current output unit 80 occupying a relatively large area may be formed on a separate substrate, and at this time, the current input unit 70 is included in the separately formed current output unit 80. It is preferably formed.

In addition, in the large LED display system 100 according to the present invention, when an overcurrent flows in the LED pixel panel 210 through the current output unit 80, the control unit 95 returns to the controller unit 40. The alarm signal is output, and the controller unit 40 outputs the alarm signal through the data communication unit 50 to transmit the alarm signal to the administrator's server or terminal through an Internet network or a wireless communication network.

That is, in the large LED display system 100 according to the present invention, when an abnormal situation in which an overcurrent flows, such as a circuit short, occurs, the control unit 95 outputs an alarm signal to notify the manager of such a situation and transmits an alarm signal. The received controller unit 40 transmits a warning message according to the alarm signal to the manager through the data communication unit 50.

Through this, the manager can immediately recognize that a situation in which there is a risk of fire has occurred in the large LED display system 100 in operation, so that emergency measures are possible.

On the other hand, the control unit 95 of the large LED display system 100 according to the present invention is a control to relatively reduce the output to the controller unit 40 when it is determined that the detected current amount is not a short circuit due to a small amount higher than the set current amount. A signal is output through the control signal output unit 90, and the controller unit 40 receiving the control signal lowers the output of the LED light-emitting unit 20 according to a preset value.

That is, the control unit 140 inputs a control signal to the controller unit 40 to prevent overheating due to high output to relatively lower the driving output of the LED light-emitting unit 20 so that the LED light-emitting unit 20 Induces to lower the luminance of the large LED display system (1) so that it can be safely operated.

Even in such a case, the controller 140 outputs an alarm signal to notify the manager that the output has been automatically lowered due to overheating, and the controller unit 40 receiving the alarm signal sends a warning message according to the alarm signal. It is transmitted to the manager through the data communication unit 60.

In addition, the control unit 95 of the large LED display system 100 according to the present invention outputs a safety inspection mode signal that causes the controller unit 40 to output an inspection screen such as a white background screen at maximum luminance.

That is, the maximum current consumed by the LED pixel panel 210 is measured while the maximum current consumed by the LED pixel panel 210 of the large LED display system 100 according to the present invention is set. Determine whether there is an abnormality in (210).

Such safety inspections can be automatically conducted regularly or irregularly.

For example, when a single LED pixel panel 210 outputs a white background screen with maximum brightness, when the current consumed is 2 amps (A), the controller 140 has the maximum current consumption value (2A). If the current consumption of the LED pixel panel 210 detected in the safety inspection mode is 3 amps (A) in the state that is set, this is determined as an abnormality of the LED pixel panel 210 such as a short circuit, etc. Likewise, a message requesting inspection is sent to the administrator.

As described above, the electronic signboard safety module 100 according to the present invention determines whether or not each LED pixel panel 210 is abnormal through the execution of the safety inspection mode.

Finally, the control unit 95 of the large LED display system 100 according to the present invention includes an internal temperature measurement sensor 97 for measuring the internal temperature of the display housing 10 as shown in FIG. 5. And, when the internal temperature detected by the internal temperature measurement sensor 97 is higher than a set internal temperature setting value, the output of the LED light-emitting unit 20 is relatively lowered through the controller unit 40 to the LED light-emitting unit. (20) And by inducing to reduce the amount of heat generated by the DC power supply unit 60, the internal space of the electric signboard housing 10 is prevented from being continuously overheated.

That is, when the internal space of the electric signboard housing 10 is overheated to a certain temperature or higher, the output of the LED light-emitting unit 20 and DC power supply 60, which generate a lot of heat with high output, is relatively lowered to the internal space. Reduce the amount of heat supplied.

On the other hand, in this case, by opening the open shutter 12-1 of the open part 12 coupled to the lower surface of the electric signboard box as described above, it is possible to quickly heat dissipation, and such an open part 12 The operation of is performed through control of an electric motor that drives the open shutter 12-1 by a motor control signal of the controller unit 40 or a motor control signal of the control unit 95.

In the above, the present invention has been described based on a preferred embodiment, but the technical idea of the present invention is not limited thereto, and modifications or changes can be implemented within the scope described in the claims. It is obvious to the user, and such modifications or changes will fall within the scope of the appended claims.

1: Large LED display system
10: electronic signboard enclosure
11: heat dissipation road
12: opening
12-1: Open shutter
13: Sunscreen plate
20: LED light emitting unit
210: LED pixel panel
30: drive driver module
40: controller unit
50: Data Communication Department
60: DC power supply
70: current input unit
80: current output unit
82: current output stage
84: switching means
90: control signal output unit
95: control unit
97: internal temperature measurement sensor
100: large LED display system according to the present invention

Claims (9)

An electric signboard enclosure having a structure in which the exterior is formed of a box-shaped structure made of a metal material, and the LED light-emitting unit is exposed forward or forward/rearly, and means for driving the LED light-emitting unit are installed therein; An LED light-emitting unit installed on the front or both sides of the electronic signboard housing and configured to form a rectangular output screen by combining a plurality of LED pixel panels made of LED light-emitting elements into a plane; A plurality of driving driver modules outputting a signal for turning on/off the LED light emitting element of the LED pixel panel according to an image signal input from the controller unit; A controller unit for inputting an image signal for outputting content output through the LED light emitting unit to the driving driver module; A data communication unit that is included in the controller unit and connects to an information communication network and transmits and receives data to and from an external information communication device through data communication; A DC power supply unit for receiving external AC power and changing into DC power for supplying; A current input unit receiving current from the DC power supply unit; A current output unit comprising a plurality of current output terminals supplying the current input through the current input unit to each driving driver module, each current output unit having a switching means; A control signal output unit performing data communication with the controller unit; And monitoring the current amount of each current output terminal of the current output part, inputting a control signal to the controller through the control signal output part, and when the current amount of each current output terminal is measured to be more than a set current amount, the output of the current output terminal is Characterized in that it comprises a; but the control unit to block through the switching means,
The control unit outputs a safety inspection mode signal to the controller unit so that the controller unit outputs an inspection screen at maximum luminance, monitors the amount of current at each current output terminal of the current output unit to determine the presence or absence of an abnormality in each LED pixel panel, When an abnormality in which overcurrent flows in the large LED display system occurs, the controller outputs an alarm signal to the controller unit, and the controller unit outputs the alarm signal through the data communication unit, and the driving output of the LED light emitting unit is relatively output through the controller unit. Lowering it to induce to lower the luminance of the LED light emitting unit,
The current input unit, the current output unit, the control signal output unit and the control unit are formed in the form of a board formed on one circuit board,
The control unit,
Includes an internal temperature measurement sensor for measuring the internal temperature of the large LED display housing, and when the internal temperature detected by the internal temperature measurement sensor is higher than a set internal temperature setting value, the driving output of the LED light emitting unit is transmitted through the controller unit. It is relatively lowered to induce to lower the luminance of the LED light emitting unit,
The electronic signboard enclosure,
Consumption characterized by further comprising: a sunscreen plate coupled to the lower surface and having a plurality of open shutters that are automatically opened and closed by an electric motor and a sunscreen plate coupled to the upper portion to form a shade by blocking sunlight A large LED display system that prevents fire by monitoring the amount of current. delete delete delete delete delete delete The method of claim 1, wherein the electronic signboard enclosure
A large LED display system that prevents fire by monitoring the amount of current consumed, characterized in that the heat dissipation paint is applied. delete

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