KR101167497B1 - Bar type led module and led illuminating device - Google Patents

Abstract

PURPOSE: A bar type LED module easy to mutually connect and an LED lighting apparatus using the same are provided to arrange a plurality of LED modules with the same direction by forming an input terminal and an output terminal on one part of a bar type LED module. CONSTITUTION: A plurality of bar type LED modules(510) are mutually connected in series or parallel. A number of LED chips(512) are mounted on the longitudinal direction of a substrate(511). A controller(520) inputs power and a control signal to a first input terminal(513). A fist output terminal(514) and a second output terminal(515) output power and the control signal. A conductive pattern(516) connects the first output terminal with the second output terminal.

Description

Bar type LED module with easy interconnection and LED lighting device using the same {BAR TYPE LED MODULE AND LED ILLUMINATING DEVICE}

The present invention relates to a bar type LED module and an LED lighting device using the same. More specifically, by forming output terminals at both ends of the bar type LED module, connecting cables through adjacent output terminals according to the arrangement direction. In addition, the present invention relates to a technology for reducing the cost according to the interconnection of bar-type LED modules, and an even picture quality of the LED lighting device.

In general, a light-emitting device (LED) is more stable and reliable than other heat conversion light emitting devices, has low power consumption, and has a long lifetime. Currently, LED technology is evolving rapidly, and high-efficiency, high-brightness LEDs of various colors are being released. One LED acts as a point light source, but when a plurality of LEDs are collected, it may act as a line light source or a surface light source. With the development of LED technology, the application field of LED, which was applied to simple display devices, is also expanding.

Recently, LED is used as a light source of a backlight unit used in a flat panel display, and the use of LEDs as outdoor indicators such as signal lamps and electronic signs is increasing along with high brightness. In particular, the bar-type LED module can be implemented in various forms in the stage, indoor, and outdoor design by the combination of the bar-type module, has attracted the spotlight for landscape production, such as landscape lighting, signboards.

1 is a view showing a conventional bar type LED module disclosed in the registration utility model 20-0440817.

Referring to FIG. 1, a conventional bar type LED module 100 includes input and output terminals 111 and 112 through which power and signals are transmitted at both ends, and a connection circuit connecting the input and output terminals is printed. The PCB board 110, which is attached to the front surface of the PCB board 110, the LED 120 and the relay for emitting light in the state exposed to the outside by the power and signal transmitted through the connection circuit and the relay 130.

The plurality of bar-type LED modules can implement various types of landscape lighting by a combination such as a series or parallel arrangement. Conventionally, several wiring connection structures are used depending on the connection method when the plurality of bar-type LED modules are arranged in parallel. have.

2 to 4 is a view showing the connection structure of the LED lighting apparatus for arranging a plurality of conventional bar type LED module in parallel.

The LED lighting apparatus 200 of FIG. 2 is a method of arranging a plurality of LED modules 210 in parallel but alternately arranging the input terminal 211 and the output terminal 212 of each LED module. Although the connection line connecting the input terminal 211 and the output terminal 212 of the effect is shortened, the position of the LED emitting light of different colors on the LED chip 213 is changed, the image quality is not clear, bar type There is a problem in that connection lines are disposed at both ends of the LED module 210 so that installation and replacement are not easy.

Referring to FIG. 3, the LED lighting device 300 of FIG. 3 is a controller 320 directly connected to each input terminal 311 of the plurality of LED modules 310, and the arrangement of the LEDs is not changed. Compared to the LED lighting apparatus 200, the image quality is clear, but as the number of the bar type LED modules 310 increases, the number of the controller 320 also increases, thereby increasing the cost.

Referring to FIG. 4, the LED lighting device 400 of FIG. 4 has a plurality of bar-type LED modules 410 arranged in the same direction, but using a long connection line between the output terminal 412 and the input terminal 411. To connect. Therefore, the image quality is clear compared to the LED display board 200 of FIG. 2, and even though the number of the bar type LED modules 410 increases, the number of the controllers 420 does not increase, compared to the LED lighting device 00 of FIG. 3. Although there is an effect of reducing the cost, if the bar type LED module 410 is long, there is a problem in that the signal length is lowered due to the length of the connection line is lowered or noise is generated.

Therefore, it is possible to arrange so that the position of the LED does not change, and even if the length of the bar type LED module becomes long, the bar type LED module and the LED lighting device using the same do not cause signal distortion due to low signal level or noise generation. This is an urgent need.

The present invention has been made to solve the above problems, an object of the present invention is to provide a second output terminal formed on the other end of the bar-type LED module and the first output terminal connected via a conductive pattern formed on the substrate By forming at one end of the module, when connecting a plurality of bar type LED modules in parallel, it is possible to arrange the plurality of bar type LED modules in the same direction while minimizing the wiring.

Still another object of the present invention is to form a second input terminal on the other end of the LED module, so that the wiring can be minimized even if the bar type LED module is connected in either of parallel or longitudinal directions.

Another object of the present invention is to form a buffer circuit on one side of the conductive pattern connecting the first output terminal and the second output terminal, so that even if the length of the bar-type LED module is increased, voltage reduction and signal distortion that may occur accordingly To prevent this.

Still another object of the present invention is that the conductive pattern further includes a selection unit, so that when the bar type LED modules are connected in series or in parallel, it is possible to select an output terminal where the bar type LED modules are easily connected to each other.

According to an aspect of the present invention for achieving the above object, a plurality of LED chips are mounted in a longitudinal direction on a substrate, a first input terminal and a first output terminal is formed on one end of the substrate, A second output terminal is formed at the other end, a plurality of bar type LED modules having a conductive pattern connecting the second output terminal and the first output terminal and the plurality of LED chips connected to the first input terminal. Provided is an LED lighting device having an easy-to-connect bar type LED module comprising a controller for controlling light emission of the light.

Here, the substrate may further include a second input terminal connected to the first output terminal through the conductive pattern at the other end.

In addition, it is more preferable that a buffer circuit is formed on one side of the conductive pattern to prevent voltage reduction and signal distortion.

The conductive pattern may further include a selector configured to select a signal transmission path by selecting one of the first output terminal and the second output terminal.

According to an aspect of the present invention for achieving the above object, the circuit pattern is formed on the substrate, one end of the substrate is installed, the first input terminal to which power and control signals are input, one end of the substrate, A first output terminal for outputting the power and the control signal, a second output terminal for outputting the power and the control signal, a second output terminal for outputting the power and the control signal, and mounted in a longitudinal direction of the substrate, and the first input terminal And a plurality of LED chips electrically connected to a second output terminal, and a conductive pattern connecting the second output terminal and the first output terminal. do.

According to the present invention as described above, by forming an input terminal and an output terminal at one end of the bar-type LED module, in the parallel connection between the bar-type LED module can be connected to one end of the LED module can be installed and replaced It is easy to reduce costs by shortening the connection line, it is possible to arrange a plurality of LED modules in the same direction, there is an effect that the image quality is clear.

In addition, by forming a second input terminal on the other end of the bar type LED module, even if the bar type LED module extends in the longitudinal direction, there is an effect that can reduce the cost by minimizing the connection line.

In addition, by forming a buffer circuit on one side of the conductive pattern, even if the length of the bar-type LED module is long, even if a large number of LED modules are connected in parallel, it is possible to prevent the voltage decrease and signal distortion caused by the lighting device as well as large There is an effect that can be applied to the electronic sign.

In addition, the conductive pattern may form a selector to select a transmission path for power and control signals, thereby providing convenience of serial or parallel connection between a plurality of bar type LED modules.

1 is a view showing a conventional bar type LED module.
2 to 4 is a view showing the connection structure of the LED lighting apparatus for arranging a plurality of conventional bar type LED module in parallel.
5 is a view showing an LED lighting device using a bar type LED module that is easy to interconnect according to an embodiment of the present invention.
FIG. 6 is a diagram illustrating a bar type LED module of FIG. 5.
FIG. 7 is a view illustrating an LED lighting apparatus in which a plurality of bar type LED modules of FIG. 5 are connected in parallel or in series.
FIG. 8 is a view illustrating an LED lighting apparatus in which a plurality of bar type LED modules of FIG. 5 are connected in series and in parallel.

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

5 is a view showing an LED lighting apparatus using a bar type LED module that is easy to interconnect according to an embodiment of the present invention.

Referring to FIG. 5, an LED lighting device 500 using a bar type LED module that is easily interconnected includes a plurality of bar type LED modules 510 and a controller 520.

The plurality of bar type LED modules 510 may include LED chips 512 longitudinally mounted on the substrate 511, first input and output terminals 513 and 514 formed at one end of the substrate 511, and a substrate. The second output terminal 515 and the conductive pattern 516 connecting the first output terminal 514 and the second output terminal 515 are formed at the other end of 511. In one embodiment, the plurality of bar type LED modules 510 may be connected in series or in parallel with each other.

The controller 520 is connected to the first input terminal 513 of any one of a plurality of bar type LED modules 510 connected to each other to transmit power and control signals to control light emission of the plurality of LED chips 510. do. In detail, the controller 520 receives a video signal, which is a combination of various signals such as RGB and DVI, output from an image reproducing medium such as a PC or a DVD player, and then applies the video signal to the LED chips 512 of the LED module 510. The signal is converted into a data signal that is a blinking signal and outputs to the plurality of LED modules 510. In one embodiment, the controller 520 may be implemented as a PC, but may be implemented by using a separate microprocessor or graphics processor.

FIG. 6 is a diagram illustrating a bar type LED module of FIG. 5.

The bar type LED module 510 includes a substrate 511 on which a circuit pattern is formed, a plurality of LED chips 512 mounted in the longitudinal direction of the substrate 511, and a first input terminal 513 through which a power and a control signal are input. And first and second output terminals 514 and 515 for outputting power and control signals, and conductive patterns 516 for connecting the first and second output terminals.

In an exemplary embodiment, the bar type LED module 510 may be formed at the other end of the substrate 511 and further include a second input terminal 517 for outputting power and control signals. In one embodiment, the bar type LED module 510 may be formed with a buffer circuit 518 on one side of the conductive pattern 516 to prevent voltage reduction and signal distortion. In another embodiment, the bar type LED module 510 may further include a selector 519 which selects one of the first output terminal and the second output terminal to select a signal transmission path.

The substrate 511 has a plurality of LED chips 512 mounted on the upper surface thereof in a length direction, and a first input terminal 513 and a first output terminal 514 are formed at one end thereof, and a second output terminal 515 at the other end thereof. ) And a second input terminal 517, and a conductive pattern for electrically connecting the plurality of LED chips 512 and the input and output terminals 513, 514, 515, and 517.

The LED chip 512 is composed of three LEDs representing three primary colors, such as a red (R) LED 512a, a green (G) LED 512b, and a blue (B) LED 512c. Of course, the type or number of LEDs constituting the LED chip 512 in the present invention can be changed in various ways. As shown in the drawings, the plurality of LED chips 512 may be spaced apart at regular intervals in the longitudinal direction of the substrate 511, but the present invention is not limited thereto. In one embodiment, the LEDs 512a, 512b, and 512c may be implemented as Surface Mounted device LEDs (SMLEDs) mounted on the upper surface of the substrate 511 using a surface mounted technology.

The first input terminal 513 and the first output terminal 514 are formed at one end of the substrate 511, the second output terminal 515 and the second input terminal 517 are formed at the other end of the substrate 511. do.

The first input terminal 513 is electrically connected to the plurality of LED chips 512 and a circuit pattern formed on the substrate 511, and the power and control signals received from the outside are connected through the first input terminal 513. It is delivered to the plurality of LED chips 512.

The first output terminal 514 is electrically connected to the second output terminal 515 through the conductive pattern 516 formed on the substrate 511, and a power supply and a control signal are output.

The second output terminal 515 is electrically connected to the plurality of LED chips 512 by a circuit pattern formed on the substrate 511, and a power supply and a control signal are output. In an embodiment, the first input terminal 513 and the first output terminal 514 are connected to the second output terminal 515 of the bar type LED modules for convenience of series connection between the bar type LED modules 510. ) And the second input terminal 517 may be directly connected without using a connection line.

If the length of the bar-type LED module 510 is longer, the length of the conductive pattern 516 is also increased, and thus signal level may be lowered due to the internal resistance of the pattern, or signal distortion may occur due to noise. Therefore, it is preferable to form a buffer circuit 518 on one side of the conductive pattern 516 to prevent voltage reduction and signal distortion.

In one embodiment, the buffer circuit 518 may be composed of a buffering unit for preventing voltage reduction and a Schmitt trigger unit for preventing signal distortion. In yet another embodiment, the buffer circuit 518 may further include a capacitor to compensate for the lost voltage.

The selector 519 may be formed at one side of the conductive pattern 516 connecting the first output terminal 514 and the second output terminal 515, and the selector 519 may include a plurality of LED chips 512. The power and control signals passed through the control unit may select and output a transmission path connected to any one of the first output terminal 514 or the second output terminal 515. In one embodiment, the selector 519 may be configured using a variable resistor or a switch.

FIG. 7 is a view illustrating an LED lighting apparatus in which a plurality of bar type LED modules of FIG. 5 are connected in parallel or in series.

Referring to FIG. 7, the first input terminal 513 of the first bar type LED module 510a among the bar type LED modules 510 is connected to the controller 520 to supply power from the controller 520. And a control signal is input.

When the plurality of bar type LED modules 510 are connected in parallel, when the path connected to the first output terminal 514a is selected by the selection unit 519a of the bar type LED module 510a, Since power and control signals are output from the first output terminal 514a closest to the first input terminal 513b of the bar type LED module 510b to be connected to the plurality of bar type LED modules using a short connection line. 510 may be connected, and connection lines may be disposed to one side to facilitate interconnection.

On the contrary, when the plurality of bar type LED modules 510 are connected in series, the transmission path connected to the second output terminal 515c by the selection unit 519c of the bar type LED module 510c is selected. When the power supply and control signals are output from the first output terminal 514c closest to the first input terminal 513d of the bar type LED module 510d to be connected in series, the plurality of bar types It is possible to connect the LED modules 510.

FIG. 8 is a view illustrating an LED lighting apparatus in which a plurality of bar type LED modules of FIG. 5 are connected in series and in parallel.

Referring to FIG. 8, the plurality of bar type LED modules 510 may be connected in series and in parallel to be used as a large display board.

When the plurality of bar type LED modules 810 of the first group connected in series are connected in parallel with the plurality of bar type LED modules 820 of the second group connected in series,

The controller 520 is connected to the first input terminal 813a of the first bar type LED module 810a, and the second output terminal 815a of the first bar type LED module 810a is the second bar type. The first output terminal 814b of the second bar type LED module 810b is connected to the first input terminal 813b of the LED module 810b of the second bar type LED module 810a. It is connected to the input terminal 817a. Accordingly, the power and control signals inputted to the first input terminal 813a of the first bar type LED module 810a may include the plurality of LED chips 512 of the plurality of bar type LED modules 810 of the first group. ) Is output to the first output terminal 813a of the first bar type LED module 810a.

Accordingly, the plurality of bar type LED modules 820 of the second group include the first output terminal 813a of the first bar type LED module 810a and the first of the third bar type LED module 820a. By connecting the input terminal 823a, a power supply and a control signal are input.

In conclusion, in case of extending the bar type LED modules in the longitudinal direction and the width direction, the power and control signals are output at the first output terminal of the first module among the group of bar type LED modules connected in the longitudinal direction. By doing so, the length of the connecting line can be minimized, thereby reducing costs and facilitating installation and repair.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications and variations without departing from the spirit and scope of the invention. Accordingly, the scope of the appended claims should include all such modifications and changes as fall within the scope of the present invention.

500: LED lighting device using the bar type LED module
510: a plurality of bar type LED module 511: a substrate
512: a plurality of LED chips 513: first input terminal
514: first output terminal 515: second output terminal
516: conductive pattern 517: second input terminal
518: buffer circuit 519: selection unit
520 controller

Claims (5)

A plurality of LED chips are mounted on a substrate in a length direction, a first input terminal and a first output terminal are formed at one end of the substrate, and a second output terminal is formed at the other end of the substrate, and the second output terminal and the A plurality of bar type LED modules in which a conductive pattern connecting the first output terminal is formed; And
A controller connected to the first input terminal to control light emission of the plurality of LED chips;
One side of the conductive pattern is an LED lighting device having a bar type LED module for easy interconnection, characterized in that a buffer circuit is formed to prevent voltage reduction and signal distortion.
The method of claim 1,
The substrate further comprises a second input terminal connected to the first output terminal through the conductive pattern on the other end of the LED lighting device having an easy-to-interconnect bar type LED module.
delete The method according to claim 1 or 2,
The conductive pattern may further include a selection unit for selecting a signal transmission path by selecting any one of the first output terminal and the second output terminal. .
delete

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