KR20140011272A - Led electronic single pannel sign board with both directions - Google Patents

Abstract

Disclosed is an LED electronic panel sign board with both directions capable of saving costs, making thin and lightening self weight in an LED electronic single panel sign board with both directions for displaying information. The LED electronic single panel sign board with both directions for displaying information includes a case; one PCB mounted in the case; LED chips separated from each other with a constant distance in the front and the back surface of the PCB; a driving circuit electrically connected to control the operation of the LED chip; and a control part outputting a pattern signal to the driving circuit.

Description

Bi-directional LED single panel display board {LED ELECTRONIC SINGLE PANNEL SIGN BOARD WITH BOTH DIRECTIONS}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a single panel LED board of a bidirectional LED, and more particularly, to a single panel LED board of a bidirectional LED displaying information (images, characters, etc.) in both directions of the panel while using one panel.

In general, LED (Light Emitting Diode) refers to a light emitting diode that emits light, and is widely used in electronic displays such as various electronic products and instrument panels in various colors such as red, green, blue, and yellow.

In recent years, LED signboards are widely used for advertisements and information display (for example, information boards for trains and buses). For example, an LED signboard for displaying specific information is installed on an advertisement prop or an outer wall of a building, and an LED signboard is embedded in the signboard to display information on the signboard.

Recently, a bidirectional LED signboard including both of the above-described one-way LED signs has been disclosed. On the other hand, the one-way LED signboard is equipped with an LED display part to display information on the front side, and a controller and a power module for controlling the driver part and the back part on the rear side thereof. Such one-way LED signboard can display information on only one side. Because it was difficult to utilize for the rear problem.

1A to 1B, the conventional bidirectional LED display panel is provided with a front panel 11 and a rear panel 12 on the front and rear of the case 10, respectively. In this case, PCBs 50a and 50b are installed on the front and rear panels 11 and 12, respectively, and LEDs 20 are installed at predetermined intervals on the PCBs 50a and 50b.

In addition, the front and rear panels 50a and 50b are independently provided with driving circuits 30a and 30b (also called driving units) and control units 40a and 40b, respectively, so that the front and rear panels 50a and 50b are also known as front and rear panels. It was possible to display the information about the module).

However, in the conventional bidirectional LED display panel, the front panel 11 and the rear panel 12 are respectively installed on the front and rear surfaces of the case 10, and the driving unit, the control unit, and the power supply unit are disposed between the front and rear panels 11 and 12, respectively. There is a problem in that unnecessary space is greatly required inside the case 10. That is, there was a problem in that the thinning and downsizing of the case 10 were practically difficult. This causes a problem that is restricted to the installation environment.

In addition, the conventional bidirectional LED display board has a problem in that the manufacturing cost is increased by providing the driving circuit (30a, 30b) and the control unit (40a, 40b) in each of the front and rear panels (11, 12). That is, in order to drive the separately provided front and rear panels 11 and 12, a separate driving circuit (driving IC) must be provided in each of the front and rear panels 11 and 12, thereby increasing the structure and increasing the manufacturing cost. there was.

The present invention was devised to solve the above problems, and in a single-panel LED panel of bidirectional LEDs displaying information such as traffic guidance or advertisement in both directions, it is possible to configure LED display units on both sides while using one PCB. Therefore, it is possible to reduce the overall weight of the whole, and to shorten the circuit line of the LED is to provide a single-panel LED board of the two-way LED, which can reduce the size and size of the device and can reduce the cost.

According to an embodiment of the present invention for achieving the above object, in a single-panel LED board of the bidirectional LED for displaying information in both directions, a single PCB; A plurality of LED chips disposed at predetermined intervals on the front and rear surfaces of the PCB; A driving circuit electrically connected to control driving of the LED chip; And a control unit for transmitting a pattern signal to the driving circuit.

The case may be provided on the outside to protect the PCB.

The driving circuit operates the front LED chip of the PCB primarily, and repeats the control to operate the rear LED chip secondly, and the driving circuit cycles the front LED chip and the rear LED chip less than 1/30 seconds. It can be operated with (visible frame period) to enable operation while having one control unit and a driving circuit.

The information may be text or image information, and the driving circuit may control operation of the front LED chip on the front surface of the PCB in a first direction, and the rear LED chip on the rear surface of the PCB may be opposite to the first direction. By operating control in two directions, the character or the image information can be displayed.

A light blocking plate is mounted in front of the LED chip, and the light blocking plate has a reference surface having an opening in which the LED chip is located, and a light blocking surface formed to protrude perpendicularly from the reference surface and positioned above the LED chip, respectively. It is preferable to construct.

According to another embodiment of the present invention, there is provided a bi-panel LED panel for displaying information in both directions, comprising: a single PCB having a front / rear; A plurality of front LED chips and rear LED chips respectively disposed at predetermined intervals on the front and rear surfaces of the PCB; A driving circuit mounted on the front or rear of the PCB and electrically connected to a power supply unit to control driving of the front LED chip and the rear LED chip; And a controller for transmitting a pattern signal to the driving circuit, wherein the LED chip is formed by forming a group of a red LED element, a green LED element, and a blue LED element, wherein the red color is formed on the front and rear surfaces of the PCB. The LED element, the green LED element, and the blue LED element are provided with a single-panel LED panel having a bidirectional LED disposed with the LED elements interposed symmetrically with each other in a straight line with the PCB therebetween.

The driving circuit may operate repeatedly the LED elements installed on the front surface of the PCB and operate the LED elements installed on the rear surface of the PCB secondly.

Through-holes are formed in the PCB so that the LED elements installed on the front and rear surfaces of the PCB may be electrically connected to each other in the horizontal direction through the through-holes.

According to the present invention, the LED chip is mounted on the front and rear of the single PCB, and the information on the front and rear surfaces can be displayed through one driving circuit and the control unit, and the LED elements installed on the front and rear of the PCB are symmetrically with each other through the PCB. By disposing the circuit line, the circuit board can be simplified and downsized, the manufacturing process can be simplified, and the manufacturing cost can be reduced.

1A is an exemplary view showing a sign of a conventional bidirectional LED;
1B is an exemplary view showing another conventional bidirectional LED display board;
2A is a block diagram of a single panel LED of a bidirectional LED according to an embodiment of the present invention;
2B is a block diagram of a single panel LED of a bidirectional LED according to an embodiment of the present invention;
2C is a control block diagram of a single panel LED of a bidirectional LED according to an embodiment of the present invention;
3 is an exemplary view showing a control cycle of a conventional two-panel LED board;
4A is an exemplary view illustrating a control cycle of a single panel LED of a bidirectional LED according to an embodiment of the present invention;
4B is an exemplary view showing a control cycle and information display of a single panel LED of a bidirectional LED according to an embodiment of the present invention;
5 is a perspective view showing the configuration of a single-panel LED board of a bidirectional LED according to an embodiment of the present invention;
6 is a side view showing the configuration of a single-panel LED board of an interactive LED according to an embodiment of the present invention;
FIG. 7A is a partial side view illustrating a light shielding plate of a single panel LED of a bidirectional LED according to an embodiment of the present invention; FIG.
7B is a partial perspective view illustrating a light blocking plate of a single panel LED of a bidirectional LED according to an embodiment of the present invention;
8A is a layout view of a conventional LED device for comparing the arrangement of the LED devices of the single-panel LED board of the bidirectional LED of the present invention;
8B is a configuration diagram showing an arrangement of LED devices of a single panel LED of a bidirectional LED according to another embodiment of the present invention; and
9 is a state diagram illustrating a circuit connection state between module elements of a conventional LED module.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention prior to the description, terms referring to the components of the present invention are named in consideration of the function of each component, and should not be understood as a meaning of limiting the technical components of the present invention. Will be.

≪ Embodiment 1 >

2A is a block diagram of a single panel LED of a bidirectional LED according to an embodiment of the present invention, Figure 2B is a block diagram of a single panel LED of a bidirectional LED according to an embodiment of the present invention, Figure 2C FIG. 1 is a control block diagram of a single panel LED of a bidirectional LED. Referring to FIG.

As shown in FIGS. 2A to 2C, the bi-directional LED single panel display board includes a case 100, a PCB 500, a front and rear LED chip 200, a driving circuit 300, and a controller 400. .

The case 100 may be made of a metal panel or the like, and is preferably configured to have rigidity in wind pressure or external pressure after installation. In addition, a separate reinforcement structure (eg, a reinforcement bar) may be installed in the case 100.

A plurality of front and rear LED chips 200 may be arranged at regular intervals as shown in FIGS. 5 and 6. Preferably, each of the front and rear surfaces of one PCB 500 is disposed, and the front and rear LED chips 200 in a predetermined area are electrically connected by a driving IC (a driving circuit).

The driving circuit (indicated by '300' in FIG. 2A) operates and controls the front and rear LED chips 200 disposed on the front and rear surfaces of the PCB 500. Preferably, the light emission cycle of the front and rear LED chips 200 is effective. It is preferable to control to achieve 1/30 second frame or less, which is a visible frame period.

3 is an exemplary view showing a control cycle of a conventional single-panel LED board of the bidirectional LED, Figure 4a is an exemplary view showing a control cycle of the single-panel LED board of the bidirectional LED according to an embodiment of the present invention, Figure 4b FIG. 5 is a view illustrating a control cycle and information display of a single panel LED of a bidirectional LED according to an embodiment of the present invention. FIG. 5 is a perspective view illustrating a configuration of a single panel LED of a bidirectional LED according to an embodiment of the present invention. 6 is a side view illustrating a configuration of a single panel LED of a bidirectional LED according to an embodiment of the present invention.

As shown in FIG. 4B, the driving circuit 300 alternately operates the front LED chip 210 (see FIG. 2) disposed on the front surface of the PCB 500 and the rear LED chip 220 (see FIG. 2A) disposed on the rear surface. . As a result, information on the front and rear surfaces A and B of the panel can be displayed.

That is, by operating the front LED chip 210 first, and by operating the rear LED chip 220 secondly, it is possible to cross the front and rear surfaces. At this time, since the effective visible frame period of the LED is controlled to less than 1/30 second frame, information can be visually recognized even if the front and rear LED chips 210 and 220 of the first panel 110 and the second panel 120 blink alternately. Do.

On the other hand, since the present invention presupposes an electronic display board, a letter or an image may be provided as 'information' in the information display. Therefore, in order to display a character or an image on the first panel 110 and the second panel 120, it is required to be displayed in different directions (left and right directions) to ensure readability in both directions.

For example, in the driving circuit 300, the front LED chip 210 of the PCB is operated from left to right, and the back LED chip 220 of the PCB is operated from right to left to display character information. Can be displayed on the panel to ensure readability. At this time, when the front LED chip 210 operation control from the right to the left direction, the rear LED chip 220 may be configured to be the operation control from the left to the right direction.

Referring to FIG. 4B, the front (A) display and the rear (B) display are alternately displayed at regular intervals. In other words, a double-sided panel in which the phrase 'Kanadara' is displayed on the front and 'Mabasa' is displayed on the back is one example. One driving circuit 300 is 1/30 seconds or less with respect to the front and rear LEDs. By setting a signal for displaying each character at intervals and rapidly blinking (on / off) accordingly, the character can be displayed before and after the electronic display.

The driving circuit 300 may be installed in the form of a plurality of driving ICs 510 as shown in FIGS. 5 and 6.

As shown in FIG. 3, the conventional electronic display panel adopts a method in which odd lines and even lines of the display intersect and display at regular intervals. In other words, the driving circuit and the control unit are connected to each of the plurality of panels, which results in a complicated structure and an increase in product cost.

On the other hand, the present invention enables the operation control of the front and rear LED chips 210 and 220 of the first and second panels 110 and 120 through one driving circuit 300 and the control unit 400. Accordingly, the structure can be simplified, as well as downsized and thinned. In addition, it is possible to display information on both sides through a single PCB, the drive circuit 300 and the control unit 400, and to improve the manufacturing efficiency and operational efficiency by solving the structural problems that must be provided with a separate drive circuit and control unit in the past. .

LED Driving circuit PCB Power panel Memory map
Conventional panels
2,048
128
Chapter 8
2
Chapter Two
Front and back
Distinct
Panel of the invention
2,048
64
Chapter four
One
1 page
Front and back
Link

For example, when four modules are installed on a PCB as shown in Table 1, the number of parts is as follows.

First, the LEDs of the conventional panel and the panel of the present invention have the same number. On the other hand, according to the present invention, the driving circuit, the PCB, and the like control the LEDs installed on the front and rear surfaces of the panel, so that the required number can be reduced to 1/2 of the conventional panel for the same number of LEDs.

In addition, it is possible to operate the LED on both sides of the panel through one power (power supply). For example, it is possible to display information on the front and back of the panel through the sequential control of the two-sided LED, while the number of parts required for this can be reduced to 1/2, which is advantageous in light weight and small size.

FIG. 7A is a partial side view illustrating a light blocking plate of a single panel LED of a bidirectional LED according to an embodiment of the present invention, and FIG. 7B is a partial perspective view illustrating a light blocking plate of a single panel LED of a bidirectional LED according to an embodiment of the present invention.

As shown in FIGS. 7A and 7B, the light shielding plate 600 for shielding light may be mounted in front of the front and rear LED chips 210 and 220. In detail, the light blocking plate 600 is formed to protrude perpendicularly from the reference plane 610 having the opening 630 in which the front and rear LED chips 210 and 220 are positioned, and the reference plane 610 to be disposed above the front and rear LED chips 210 and 220. It is provided with a light shielding surface 620, respectively located.

Accordingly, it is possible to prevent the information discriminating power of the display board from being lowered by external light such as sunlight.

Second Embodiment

FIG. 8A is a layout view of a conventional LED device for comparing the arrangement of LED devices of a single panel LED board of a bidirectional LED of the present invention, and FIG. 8B is a LED device of a single panel LED board of a bidirectional LED according to another embodiment of the present invention. This diagram shows the arrangement of.

In the second embodiment of the present invention, in the above-described embodiment, the front LED chip 210 and the rear LED chip 220 of the PCB 500 are red LED elements (denoted as 'R'), green LED elements ('G' And blue LED elements (denoted by 'B') form one group.

Specifically, as shown in FIG. 8B, the LED elements R, G, and B are red LED elements 211 and 221, green LED elements 212 and 222, and blue LED elements 213 and 223 on the front and rear surfaces of the PCB 500, respectively. ) Are preferably connected to each of the individual LED elements (R, G, B) with the PCB 500 interposed in a straight line with the PCB 500 therebetween, symmetrical with each other. In this case, reference numerals '214' and '224' denoted as 'C' in FIG. 8B indicate a ground element (ground) for connection between the other LED elements R, G, and B.

In addition, through-holes 250 may be formed in the PCB 500 so that each of the LED elements R, G, and B may be connected in a straight line at the front and the rear of the PCB 500. For example, the red LED element 211 on the front side and the red LED element 221 on the back side are connected to each other in a straight line through the through hole 250 of the PCB 500, and the remaining green and blue LED elements 212, 213, and 222, 223, respectively. The LED elements R, G, and B may be symmetrically disposed on the front and rear surfaces of the PCB 500 by being connected in a straight line through the through holes 250.

In addition, the driving circuit 300a or 300b installed on the PCB 500 operates the LED elements 211, 212, 213 installed on the front surface of the PCB 500 firstly, and the LEDs installed on the rear surface of the PCB 500 secondly. It can be controlled so that iterative control to operate the elements (221, 222, 223) is made.

Hereinafter, the use state of the single panel LED of the bidirectional LED according to the second embodiment of the present invention will be described.

First, referring to FIG. 8A, in the conventional electronic display board, the LED elements 51 to 58 are disposed to be shifted (not symmetrically) to both sides with respect to the front and rear PCBs 50a and 50b. These are disposed on the front PCB 50a and the rear PCB 50b, respectively, and drive circuits 30a and 30b for controlling them are also installed, so that their LED elements 51 to 58 are operated from the front and the rear, respectively. It has a configuration to control.

Therefore, in order to arrange these LED elements 51 to 58 so as not to interfere with each other in a limited space, there is a problem in that a circuit line becomes long and complicated (a bypass design of the circuit line is necessary). For example, FIG. 9 is a state diagram illustrating a circuit connection state between module elements of a conventional LED module. Each LED element is densely arranged on a PCB of a display board on which a plurality of LED modules are disposed, and drives them. It can be seen that the circuit lines are designed to be very complicated so that they do not interfere with each other.

On the contrary, in the present invention, as shown in FIG. 8B, the LED elements 211, 212, 213, and 221, 222, 223 are respectively connected horizontally through the through holes 250 to the front and the rear with respect to the PCB 500. The problem that the lines overlap with each other and becomes complicated can be solved (simplification of the circuit pattern and miniaturization of the device are possible).

In addition, since the space for preventing the circuit lines from overlapping each other is unnecessary, the LED elements can be densely arranged and the resolution can be increased. In addition, as the number of LED elements controlled by one driving circuit is increased, the number of parts can be reduced as a whole, thereby increasing production cost.

While the present invention has been particularly shown and described with reference to the particular embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

100: case 110: first panel
120: second panel 200: LED
300: driving circuit 400: control unit
500: PCB

Claims (8)

In the single-panel LED board of the bidirectional LED that displays information in both directions,
Single PCB with front and back sides; A plurality of front LED chips and rear LED chips respectively disposed at predetermined intervals on the front and rear surfaces of the PCB;
A driving circuit mounted on the front or rear of the PCB and electrically connected to a power supply unit to control driving of the front LED chip and the rear LED chip;
A control unit for transmitting a pattern signal to the driving circuit;
The driving circuit is a single-panel LED panel of the two-way LED, characterized in that the first control to operate the front LED chip of the PCB, the second iterative control to operate the rear LED chip. The method according to claim 1,
Single panel electronic board of the two-way LED, characterized in that the case is provided on the outside to protect the PCB. The method according to claim 1,
And the driving circuit operates the front LED chip and the rear LED chip in a period (visible frame period) of 1/30 seconds or less, respectively. The method according to any one of claims 1 to 3,
The information is text or image information,
In the driving circuit, the front LED chip on the front surface of the PCB is controlled to operate in a first direction,
The back panel LED chip on the back of the PCB is the operation control is performed in a second direction opposite to the first direction to display the character or the image information, characterized in that the single-panel LED panel. The method according to claim 1 or 2,
The front of the front or rear LED chip is equipped with a light shield plate,
The light blocking plate has a reference surface formed with an opening in which the front or rear LED chip is positioned, and
And a light shielding surface protruding perpendicularly from the reference surface and positioned on top of the front or rear LED chip, respectively. In the single-panel LED board of the bidirectional LED that displays information in both directions,
Single PCB with front and back sides;
A plurality of front LED chips and rear LED chips respectively disposed at predetermined intervals on the front and rear surfaces of the PCB;
A driving circuit mounted on the front or rear of the PCB and electrically connected to a power supply unit to control driving of the front LED chip and the rear LED chip; And
A control unit for transmitting a pattern signal to the driving circuit;
The LED chip is formed by grouping a red LED device, a green LED device, and a blue LED device to form a plurality of groups,
The red LED device, the green LED device, and the blue LED devices on the front and rear of the PCB, the LED elements are arranged in a position symmetrical with each other by connecting the LED elements in a straight line with the PCB therebetween. LED single panel display board. The method according to claim 6,
The driving circuit is a bi-directional LED single-panel display board, characterized in that the first operation to operate the LED elements installed on the front of the PCB, the second iteration control to operate the LED elements installed on the back of the PCB. The method according to claim 6,
A through-hole is formed in the PCB, the LED elements installed in the front and rear surfaces of the PCB through the through-holes of the two-panel LED panel, characterized in that the electrically connected to each other in the horizontal direction.

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