WO2019093725A1

WO2019093725A1 - Led lighting device

Info

Publication number: WO2019093725A1
Application number: PCT/KR2018/013300
Authority: WO
Inventors: 신규원
Original assignee: 주식회사 아모센스
Priority date: 2017-11-10
Filing date: 2018-11-05
Publication date: 2019-05-16

Abstract

Provided is an LED lighting device capable of performing both a lighting role for emitting light at a road and an indicator role enabling information on the road and the like to be guided. The provided LED lighting device comprises: a first LED module disposed in a body unit, and having a plurality of first LEDs mounted on a first printed circuit board; a second LED module disposed in the body unit and having a plurality of second LEDs mounted on a second printed circuit board; a power supply unit for supplying power to the first LED module and the second LED module; and a distributor for distributing power to the first LED module and the second LED module, wherein the second LED module comprises a converter for converting the power supplied from the distributor into necessary power.

Description

LED lighting device

The present invention relates to an LED lighting device, and more particularly, to an LED lighting device installed on a road, a tunnel, or the like.

In general, various types of lighting devices may be installed in a road or a tunnel. Sodium lamps, halogen lamps, mercury lamps or metal halide lamps have been used in conventional lighting devices. However, these lamps have high consumption of electricity, short service life, high maintenance cost, and environmental pollution problems.

Accordingly, efforts have been made to apply a light emitting diode (LED) light source as a means for solving the problem of power consumption due to the use of the lamp and extending the lamp replacement period in accordance with the extension of the lamp life.

A light emitting diode (LED) is a semiconductor device that generates light by flowing a current in a forward direction to a PN junction. LEDs are attracting attention as a next-generation illumination device because they have high efficiency of converting electric energy into light energy, have a long life, have low power consumption, and can greatly reduce maintenance and repair costs.

Since the LED is formed in the form of a chip, various elements are required to be packaged and applied to the LED illumination. For example, there is a need for a power supply that supplies power suitable for a plurality of LEDs, and a device for deriving the extracted light for an efficient light emitting structure is required.

Because LED lighting is generally driven by direct current, LED lighting uses SMPS (Switching Mode Power Supply) to convert AC power, which is a commercial power source, into DC power to drive LED lighting. However, since SMPS uses a transformer and a large-capacity capacitor, it is difficult to miniaturize the LED illumination and IC integration, and also causes a large loss due to power conversion.

It is an object of the present invention to provide an LED lighting device capable of simultaneously serving as an indicator for guiding the role of lighting for illuminating a road and information on roads.

It is another object of the present invention to provide an AC direct type LED lighting device in which SMPS is removed.

The LED lighting apparatus according to an embodiment of the present invention includes a first LED module disposed on a body portion and a body portion, a first LED module having a plurality of first LEDs mounted on a first printed circuit board, A second LED module mounted on a second printed circuit board, a power supply unit supplying power to the first LED module and the second LED module, and a distributor distributing power to the first LED module and the second LED module, The second LED module includes a converter for converting the power supplied from the distributor into the required power.

In the embodiment of the present invention, the distributor supplies the same power to the first LED module and the second LED module by receiving the DC power from the power supply unit, and the converter converts the power distributed from the distributor into the required power of the second LED module DC converter. At this time, the power supply unit may include an SMPS for converting AC power to DC power.

In the embodiment of the present invention, the distributor supplies the same power to the first LED module and the second LED module by receiving AC power from the power supply unit, and the converter converts the power distributed from the distributor into the required power of the second LED module To-AC converter. At this time, the distributor has a surge protection unit for limiting the surge signal inputted from the external AC power, and can distribute the AC power with the limited surge signal to the first LED module and the second LED module.

In an embodiment of the present invention, the converter may be installed on the second printed circuit board of the second LED module.

In an embodiment of the present invention, a plurality of the first LED modules may be disposed in the body portion, and the number of the second LEDs may be smaller than the number of the first LEDs.

In an embodiment of the present invention, the first LED module may be disposed on the body portion to irradiate light in a first direction, and the second LED module may be disposed on the body portion to irradiate light in a second direction different from the first direction have. In this case, the first LED module may be an illumination LED module for illuminating the road, and the second LED module may be an LED module for an indicator for guiding information to the user.

According to the embodiment of the present invention, an outdoor lighting device in which an LED module for illumination and an LED module for indicator are arranged in one body can provide an indicator that can guide a driver to a lighting role for illuminating a road, Role can be performed at the same time.

In addition, since the LED illumination device eliminates the SMPS and has the surge protection part in the distributor, the lifetime of the LED lighting module can be further extended and the loss due to the power conversion can be further reduced.

In addition, the LED illumination device has the effect of reducing the size of the LED illumination module and IC integration by removing the SMPS.

1 is a perspective view schematically showing a state in which an LED illumination device according to an embodiment of the present invention is installed;

2 is a perspective view of an LED illumination device according to an embodiment of the present invention;

Fig. 3 is a front view of the LED illumination device according to Fig. 2; Fig.

Fig. 4 is a side view of the LED illumination device according to Fig. 2; Fig.

5 is a view schematically showing power supply of an LED illumination device according to an embodiment of the present invention;

5 to 7 are views schematically showing power supply of an LED illumination device according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

For the sake of clarity, parts of the present invention that are not related to the essence of the present invention can be omitted from the detailed description, and the same or similar elements can be given the same reference numerals throughout the specification.

Also, when a part is referred to as " including " an element, it does not exclude other elements unless specifically stated otherwise. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention and that, unless otherwise defined herein, it will be understood by those skilled in the art, Can be interpreted as a concept.

1 to 4, an LED illumination apparatus according to an embodiment of the present invention includes a body 100. The body 100 includes a first LED module 200 and a second LED module 300, .

The body portion 100 may be installed in a straight line or a curved line of the road. The body portion 100 may be formed in a substantially hexahedral shape. That is, the body portion 100 may have a front surface, a back surface, both sides, a flat surface, and a bottom surface. Here, the front surface of the body part 100 refers to a direction facing the road side. A post of a predetermined length may be provided on the lower side of the body part 100. The post may be fixedly installed on a road surface or a concrete structure such as a boundary stone along the longitudinal direction of the road.

The body portion 100 may be formed at a low height of 3 m or less. For example, when the LED illumination device is installed adjacent to the bridge, the height of the body 100 is less than 3 m, thereby minimizing interference with the work of the maintenance vehicle of the bridge. In addition, the manufacturing cost of the lighting apparatus can be reduced by reducing the height of the body portion 100 as compared with the existing street lamps of 3 m or more.

The first LED module 200 may be disposed on the front surface of the first surface 110 of the body part 100, for example, the body part 100. A plurality of the first LED modules 200 may be disposed on the body 100. The first LED module 200 may be an LED module for illuminating the road. That is, the first LED module 200 may be disposed on the body 100 so that light is emitted toward the road side.

The second LED module 300 may be disposed on the second surface 120 of the body 100, for example, on the side surface of the body 100. The second LED module 300 may be an LED module for an indicator that can display information such as road information, a rapid curve section, and a speed limit to the driver. That is, the second LED module 300 can be disposed on the body 100 in a direction that the driver of the vehicle can easily recognize.

That is, the first LED module 200 and the second LED module 300 are arranged in the body part 100 such that the irradiation direction of the second LED module 300 and the emitting direction of the first LED module 200 are different from each other .

Referring to FIG. 5, the first LED module 200 may be manufactured in the form of a module in which a plurality of first LEDs 210 are mounted on the first printed circuit board 220. The number of the first LEDs 210 used in the first LED module 200 may be determined according to the height of the set body 100 or the required illuminance.

The second LED module 300 may be manufactured in the form of a module in which a plurality of second LEDs 310 are mounted on the second printed circuit board 320. The number of the second LEDs 310 used in the second LED module 300 may be determined according to the height of the set body 100 or the required illuminance. The number of the second LEDs 310 may be smaller than the number of the first LEDs 210 because the second LED module 300 may be used for an indicator that is not for illumination.

The first LED module 200 and the second LED module 300 can receive power from the single power supply unit 500 and thus the LED illumination device can further include the distributor 400. [ The distributor 400 may distribute power to the first LED module 200 and the second LED module 300. [ The distributor 400 may include an input terminal 410 and an output terminal 420. The input terminal 410 is connected to the power supply unit 500 and the output terminal 420 is connected to the first LED module 200 and the second LED module 300.

The power supply unit 500 may include an SMPS (Switched Mode Power Supply) 510 that converts AC power to DC power. The SMPS 510 controls the on / off time ratio of the semiconductor switch device To stabilize the output. That is, the SMPS 510 receives power from the outside, converts the power into an appropriate power for the LED module, and supplies the power to the LED module.

The first LED module 200 may include a heat dissipation unit 230 on one side of the first printed circuit board. 2. Description of the Related Art In general, an LED illumination device is manufactured by mounting a plurality of relatively small-sized LED chips on a printed circuit board in order to prevent overheating. When a part of the plurality of LEDs mounted on the printed circuit board is abnormally heated to overheat, the temperature of the surrounding LEDs also rises together with a failure, resulting in the LED lighting device being completely extinguished. If the LED lighting device is completely turned off, it may remain in an unlit state until the repair is completed, which may cause accidents. The heat dissipation unit 230 can prevent overheating of the LED module.

The first LED module may include a first connector 240 connected to one of the output terminals 420 of the distributor 400. The second LED module 300 may include a second connector 340 connected to another one of the output terminals 420 of the distributor 400. As the first connector 240 and the second connector 340, a DC wire connector can be applied.

Since the second LED module 300 is provided for the purpose of recognizing road information or the like to the driver, the power supplied to the first LED module 200 for illumination may be smaller than that of the first LED module 200 for lighting. That is, the first LED module 200 and the second LED module 300 may be different from each other in luminance to be illuminated. For example, when the second LED module 300 having a lower power consumption than the first LED module 200 is used, the same power is supplied from the power supply unit 500 to the first LED module 200 and the second LED module 300 , An overload occurs due to a high current, which may cause a failure of the second LED module 300. [ In other words, the main cause of the failure of the LED illumination device is the overcurrent input to the LED, the overheating of the LED, and the like.

Accordingly, in order to supply the power from the power supply unit 500 to the first LED module 200 and the power from the power supply unit 500 to the second LED module 300, (300) may include a converter (330). The converter 330 allows the power supplied from the power supply unit 500 to be converted into the required power of the second LED module 300. That is, the first LED module and the second LED module receive the same power from the distributor, and the DC converter can convert the power distributed from the distributor into the required power of the second LED module. The converter 330 may be provided on the second printed circuit board 320 of the second LED module 300 so as to increase the conversion efficiency.

For example, referring to FIG. 5, two first LED modules 200 and one second LED module 300 are disposed in the body 100, and the second LED module 300 is an LED module for an indicator A lower power consumption than that of the first LED module 200 can be applied. At this time, if it is assumed that a current of 1.4 A is supplied from the power supply unit 500, a current of 467 mA is supplied to each LED module through the distributor 400. However, the second LED module 300 may be overloaded due to the high current of 467 mA, but the LED lighting device may be provided with a comparatively low current of about 70 mA by the converter 330 to the second LED module 300 have. Therefore, it is possible to prevent the failure of the second LED module 300 due to the overcurrent.

6 and 7, the first LED module 200 may include a heat dissipation unit 230 on one side of the first printed circuit board. 2. Description of the Related Art In general, an LED illumination device is manufactured by mounting a plurality of relatively small-sized LED chips on a printed circuit board in order to prevent overheating. When a part of the plurality of LEDs mounted on the printed circuit board is abnormally heated to overheat, the temperature of the surrounding LEDs also rises together to cause a failure, so that the LED illumination device may be extinguished completely. If the LED lighting device is completely turned off, it may remain in an unlit state until the repair is completed, which may cause accidents. The heat dissipation unit 230 may prevent overheating of the LED module and may be configured such that a plurality of heat dissipation fins protrude to increase a heat dissipation area.

The first LED module 200 and the second LED module 300 can receive external AC power. Accordingly, the LED lighting device can further include the distributor 400. The distributor 400 may distribute AC power to the first LED module 200 and the second LED module 300. [ The distributor 400 may include an input terminal 410 and an output terminal 420. The input terminal 410 receives external AC power and the output terminal 420 is branched into a plurality of terminals to be connected to the first LED module 200 and the second LED module 300. That is, in the LED illumination device, AC power applied from the outside is input to the distributor 400, and the distributor 400 outputs AC power to each LED module.

On the other hand, a surge signal may be generated when external AC power is supplied to each of the LED modules through the distributor 400. Surge refers to excessive waveforms of current, voltage, or power with characteristics that propagate along the circuit line and increase rapidly and gradually decrease. Especially, the LED modules used in the outdoor are sometimes subjected to surge voltage generated by lightning or high-voltage facilities.

In addition, the surge voltage can be mainly applied to the LED module through a converter or SMPS that converts AC power inputted from the outside into DC power, and when the surge voltage is applied to the LED module, the converter and the LED module are all damaged . Accordingly, the LED illumination device does not have the SMPS for converting the AC power to the DC power, and the distributor 400 is provided with the surge protection unit 430. That is, the LED illumination device includes the surge protection unit 430 in the distributor 400 that distributes and outputs the AC power to the first LED module 200 and the second LED module 300, It is possible to limit the surge signal.

The first LED module 200 may include a first connector 240 connected to one of the output terminals 420 of the distributor 400. The second LED module 300 may include a second connector 340 connected to another one of the output terminals 420 of the distributor 400. The first connector 240 and the second connector 340 may be wire connectors.

Since the second LED module 300 is provided for the purpose of recognizing road information or the like to the driver, the power supplied to the first LED module 200 for illumination may be smaller than that of the first LED module 200 for lighting. That is, the first LED module 200 and the second LED module 300 may be different from each other in luminance to be illuminated. For example, when the second LED module 300 having lower power consumption than the first LED module 200 is applied, when the same power is supplied to the first LED module 200 and the second LED module 300, The second LED module 300 may fail due to an overload. That is, the main cause of the failure of the LED lighting device may include an overcurrent flowing into the LED, an overheating of the LED, and the like.

Accordingly, the LED illumination device supplies external AC power to the first LED module 200 through the distributor 400, while the second LED module 300 supplies the second LED module 300 with the required AC power, A converter 330 may be provided. The converter 330 allows the power supplied from the AC power input to the distributor to be converted into the required power of the second LED module 300. That is, the first LED module and the second LED module can receive the same AC power, and the AC converter can convert the power distributed from the distributor into the required power of the second LED module. The converter 330 may be provided on the second printed circuit board 320 of the second LED module 300 so as to increase the conversion efficiency.

Claims

A body portion;

A first LED module disposed on the body and having a plurality of first LEDs mounted on a first printed circuit board;

A second LED module disposed on the body and having a plurality of second LEDs mounted on a second printed circuit board;

A power supply unit for supplying power to the first LED module and the second LED module; And

And a distributor for distributing power to the first LED module and the second LED module,

And the second LED module includes a converter for converting power supplied from the distributor into required power.
The method according to claim 1,

The distributor supplies the same power to the first LED module and the second LED module by receiving DC power from the power supply unit,

Wherein the converter is a DC converter that converts the power distributed from the distributor into the required power of the second LED module.
3. The method of claim 2,

Wherein the power supply unit includes an SMPS for converting AC power to DC power.
The method according to claim 1,

Wherein the distributor supplies AC power to the first LED module and the second LED module by receiving AC power from the power supply unit,

Wherein the converter is an AC converter that converts the power distributed from the distributor into the required power of the second LED module.
5. The method of claim 4,

Wherein the distributor has a surge protection unit for limiting a surge signal inputted from an external AC power and distributes AC power with a limited surge signal to the first LED module and the second LED module.
The method according to claim 1,

And the converter is mounted on a second printed circuit board of the second LED module.
The method according to claim 1,

Wherein a plurality of the first LED modules are arranged in the body part.
The method according to claim 1,

Wherein the number of the second LEDs is smaller than the number of the first LEDs.
The method according to claim 1,

Wherein the first LED module is disposed on the body portion to emit light in a first direction and the second LED module is disposed on the body portion to emit light in a second direction different from the first direction.
The method according to claim 1,

Wherein the first LED module is an LED module for illuminating light on a road.
The method according to claim 1,

And the second LED module is an LED module for an indicator for guiding information to a user.