KR101635482B1 - LED lamp for ships - Google Patents

Abstract

Disclosure of the Invention An object of the present invention is to provide a method and apparatus for protecting a ship from overvoltage, overcurrent, surge, and power supply caused by unstable power of a ship, And can provide a 18 W class ship LED illumination capable of stably operating the lighting by lowering the harmonic content (THD).
The present invention relates to a light emitting diode (LED) module, comprising: a housing which is opened at one side to form a housing part inside, a power supply circuit for supplying driving power, an LED module, and a plurality of through holes, And a light emitting diode (LED) module which is coupled to an upper side of the housing and which diffuses and emits light emitted from the LED module to the outside, Wherein the power supply circuit includes a circuit configured in parallel with an input AC power source to reduce an instantaneous overvoltage and a surge current applied from the AC power source and a circuit for sensing or controlling an overcurrent and adjusting or limiting the rated current .

Description

LED lamp for ships with overvoltage, overcurrent, surge and power supply protection,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an LED lighting device, and more particularly, to an LED lighting device capable of generating an LED light with a long time while being protected from overvoltage, overcurrent, surge, Which can withstand vibration, waterproofing, salt and the like due to temperature change, air volume, and the like, and can lower the harmonic content (THD) and operate the lighting stably.

Generally, in the residential area of the ship, the ceiling or the wall of the engine room, the deck area, etc., there is a lighting lamp that can illuminate the ship. However, the incandescent lamp, which was used as general light for ships, was easily destroyed due to engine room vibration. I have also introduced an earthquake-resistant incandescent lamp, but after long-distance voyages, many lights were replaced with new ones, which made maintenance costs expensive. Fluorescent lamps are particularly disadvantageous for use on commercial vessels that operate for several tens of days because of high power consumption.

In the meantime, as the development and distribution of LED lighting has spread and become active in the 21st century, the interest in LED lighting for ships has increased. Most of marine luminaires, It is incomplete without taking into consideration the special situation of marine use, and it is impossible to obtain various types of marine type approval.

Particularly, since the light weight of the lighting must be low due to the vibration of the ship and the influence of the waves due to the influence of the ship such as the LED lighting for ships, the LED chips are accumulated, and the heat dissipation Unique heat dissipation design that differentiates from structure is needed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art. SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a vibration control device and a vibration control method thereof that can prevent vibration due to a temperature change and a wind amount that can be generated due to a long voyage while protecting an overdrive, , Waterproof, saline, and the like, and can lower the harmonic content (THD) and operate the lighting stably.

Technical Solution In order to accomplish the above object, the present invention provides a ship LED illumination device comprising: a housing which is opened at one side and forms a housing portion inside, a power supply circuit for supplying driving power, an LED module, An LED heat sink for fixing the power supply circuit and the LED module by being electrically connected to a terminal of the power supply circuit located at a lower portion of the LED module, And a diffusion cover for diffusing and emitting light emitted from the LED module to the outside, wherein the power supply circuit comprises: a circuit configured in parallel with the input AC power supply, the circuit for attenuating the instantaneous overvoltage and the surge current applied from the AC power supply, May be included to detect and limit the current to the rated current.

The housing may be provided with a plurality of hinge clips along a side edge, and the diffusion cover may include a plurality of coupling grooves for fastening the hinge clip along the side edge.

The junction of the housing and the diffusion cover may further include a ring-shaped gasket.

The rear surface of the housing may further include a fixing bracket fixed to the cabin wall.

Sockets may be formed at one or both ends of the housing.

The power supply circuit includes an AC stabilization module that transmits AC power input through a commercial power supply to a power supply device, a power supply device that converts AC power from the AC stabilization module to DC power, And a DC stabilization module that supplies driving power to the LED module.

The AC stabilization module includes a current limiting unit for attenuating overvoltage and surge, a current sensing unit for sensing a current of an input AC power source, and a controller for controlling a current of the AC power source according to a sensing signal from the current sensing unit, And a current control unit for outputting the current control signal.

The surge absorber may include a surge absorber configured in parallel with the input AC power source to reduce an instantaneous overvoltage or a surge current of an instantaneous overvoltage or a surge current applied from the power source, And may include a varistor for absorbing a momentary overvoltage or a surge current from an instantaneous overvoltage or a surge current applied from a power source, and a line filter for removing noise from an input AC power source.

The current limiting unit includes three surge absorbers (Ab1 to Ab3) arranged in parallel to the input AC power sources (AC_L and AC_N), and at least one or more of the surge absorbers And a one-line filter for removing noise from the varactors (MOV1 to MOV5).

The current control unit may include a plurality of capacitors (capacitors) configured in parallel.

The power supply may be designed as a flyback converter, and may include a one-stage PFC circuit and an LC series resonant filter.

The DC stabilization module includes a driving power sensing unit formed corresponding to each of the output terminals connected to the plurality of driving power supply lines and sensing a connection state of the driving power supply lines, And a driving power controller for controlling whether the driving power is output to the LED module.

In the ship LED light according to the present invention, the heat sink having the LED module fixed thereto is seated in the housing, and the diffusion cover is closely contacted and engaged with the housing, and a gasket It is resistant to vibration due to air volume and the like, and can withstand water, salt, and the like. Also, it can be combined easily and quickly without assembly error, and it is easy to maintain by one-touch type LED illumination replacement method.

In addition, it is possible to rectify the AC power input from the commercial power supply, to remove the noise, to stabilize the power supply circuit from surges caused by natural phenomena such as lightning, lightning, and overvoltages caused by external electrical work or unstable power supply And the rated life can be maintained.

Furthermore, the harmonic content (THD) is greatly reduced to improve the stability of the power supply circuit and LED lighting. The PFC circuit and the PWM circuit design, which minimizes the reactive power consumption, prevent power loss and prevent power failure, power supply instability, It prevents reverse voltage and reverse current caused by cause.

1 is an external perspective view of a ship LED illumination according to an embodiment of the present invention.
2 is an exploded view of a ship LED illumination according to an embodiment of the present invention.
3 is an internal block diagram of a power circuit of a ship LED illumination according to an embodiment of the present invention.
4 is an internal configuration diagram of the AC stabilization module shown in FIG.
5 is a circuit diagram of a 6KV / 3KA class overvoltage, overcurrent, and surge protection module according to an embodiment of the present invention.
6 is a circuit diagram of an 18 W power supply (SMPS) according to an embodiment of the present invention.
7 is an internal configuration diagram of the DC stabilization module shown in FIG.
FIG. 8 is a chart showing the results of a test on a 18W-class ship LED illumination according to an embodiment of the present invention, after the test was conducted by KEITI.

The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text.

It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The terms first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprising" or "having ", and the like, are intended to specify the presence of stated features, integers, steps, operations, elements, parts, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, or combinations thereof.

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

FIG. 1 is an external perspective view of a ship LED illumination according to an embodiment of the present invention, and FIG. 2 is an exploded view of a ship LED illumination according to an embodiment of the present invention.

1 and 2, the ship LED light of the present invention includes a housing 100, a power supply circuit (not shown), an LED heat sink 300, an LED module 400 A diffusion cover 500 coupled to the upper side of the housing and a gasket 200 for maintaining the airtightness of the joint between the housing 100 and the diffusion cover 500.

The housing 100 is opened at one side, and a bracket for fixing the hanger 100 to the ceiling of the ship is installed on the rear surface, and a plurality of hinge clips 110 are installed along the side edge. A hollow 120 of a power socket to be connected to an external power source is formed at one end or both ends of the housing 100.

The power supply circuit converts an AC power supplied from the outside into a DC power and supplies it to the LED module 400. In particular, the power supply circuit of the present invention includes a circuit that is formed in parallel with an input AC power source and that attenuates an instantaneous overvoltage or surge current applied from a power source, and a circuit that detects an overcurrent and adjusts or restrains the rated current, Surge and power supply protection.

The LED module 400 is coupled to the LED heat sink 300 to generate light. A plurality of LEDs may be mounted on the upper surface of the LED module 300, and the LED module 400 may be designed as an independent unit module. In the embodiment of the present invention, LEDs are arranged in a line in the LED module 400, but the present invention is not limited to this, and two or more LEDs may be continuously arranged.

The LED heat sink 300 is formed to have a size corresponding to the upper end of the housing 100 and at least one through hole 310 is formed so that the LED module 400 is inserted into the LED heat sink 300 through the through hole 310 And is connected to the power supply circuit. That is, the LED module 400 is located on the upper part of the LED heat sink 300, the power supply circuit is located below the LED heat sink 300, and the terminals provided on the LED module 400 through the holes 310 The power supply circuit and the LED module 400 are fixed to the LED heat sink 300 by being electrically connected to terminals provided in the power supply circuit through the LED heat sink 300.

The LED heat sink 300 is fixedly coupled to the housing 100 by respective fitting jaws (not shown) formed inside the housing 100 with the fitting grooves 320 formed at regular intervals along the outer circumference of the body . The LED heat sink 300 is preferably made of a special aluminum alloy material having excellent thermal conductivity.

As described above, in the ship LED illumination according to the present invention, the power supply circuit is provided in the illumination, and the terminals provided in the power supply circuit and the terminal provided in the LED module 400 are connected to each other so that the power supply circuit and the LED module 400 The wiring structure can be remarkably simplified because of the electrical connection, and the LED module 400 and the power supply circuit are fixed to the LED heat sink 300, which is advantageous against the vibration due to the air volume and the like.

The diffusion cover 500 is coupled with the housing 100 to seal the inside of the housing 100 from the outside, and diffuses light emitted from the LED module 400 to the outside and emits the light. Accordingly, the light radiated to the front portion of the LED module 400 is uniformly emitted by the diffusion cover 500, so that stable surface light emission is performed, thereby reducing the glare caused by the point light emission. The diffusion cover 500 is preferably a transparent or semitransparent synthetic resin, preferably polycarbonate (PC).

The diffusion cover 500 is provided with a plurality of coupling grooves 510 along a side surface thereof to be fastened to the hinge clip 110 of the housing 100. The coupling groove 510 and the hinge clip 510 110 are uniformly generated by the contact pressure of the contact surfaces of the first and second electrodes 110, 110, thereby improving the waterproof efficiency.

In addition, a gasket (200) is provided at a joint portion between the diffusion cover (500) and the housing (100) to prevent water from being introduced into the interior of the housing in order to further increase the waterproof efficiency of the vessel from moisture or seawater.

Hereinafter, a method of assembling a ship LED light according to an embodiment of the present invention will be described.

First, the connection terminal of the LED module 400 is inserted into the through hole 310 of the LED heat sink 300 and connected to the power supply circuit located below the LED heat sink 300. Then, the LED heat sink 300 is mounted on the housing 100, and the diffusion cover 500 and the housing 100 are combined with each other by a hinge clip 110 and assembled.

Accordingly, the LED heat sink 300 is fitted into the housing 100 in a state of being seated, and the diffusion cover 500 is tightly coupled with the housing 100 in a form of being engaged with the housing 100, , Waterproofing, salt and so on. In addition, it is possible to easily and quickly join without an assembly error, and maintenance is easy.

Hereinafter, a power supply circuit of a ship LED illumination according to an embodiment of the present invention will be described.

In order to develop the 18 W power supply circuit used in the ship LED lighting of the present invention, it is necessary to control the output voltage and the current according to the LED drive voltage and to protect the power supply circuit in the event of abnormal operation and abnormal voltage / 6KV / 3KA protection circuit should be constructed.

To this end, the present invention employs a one-stage method to achieve high efficiency in an 18 W power supply circuit and a flyback method to reduce the size of the circuit. In addition, the AC stabilization module rectifies the AC power supply and eliminates noise. By designing to generate a constant output by adopting the current mode method through the PWM control, the overvoltage, the overcurrent, and the surge ) Designed to protect the power supply and LED module.

FIG. 3 is an internal block diagram of a power supply circuit of a ship LED illumination according to an embodiment of the present invention, FIG. 4 is an internal configuration diagram of the AC stabilization module shown in FIG. 3, 6KV / 3KA class overvoltage, overcurrent and surge protection module according to Fig. 6 is a circuit diagram of an 18 W power supply SMPS according to an embodiment of the present invention, and FIG. 7 is an internal configuration diagram of the DC stabilization module shown in FIG.

3, the power supply circuit 900 of the present invention includes an AC stabilization module 600 and an AC stabilization module 600 for delivering AC power input through the commercial power supply to the power supply 700 And a direct current stabilization module 800 for supplying the driving power outputted from the power supply device 700 to the LED module 400. The power supply device 700 includes a DC power supply 700,

First, the AC stabilization module 600 attenuates and absorbs an overcurrent, an overvoltage, or a surge current instantaneously generated from an AC power source applied from a commercial power source, protects the power source circuit 900, and adjusts the current of the output voltage to a constant level. 4, the AC stabilization module 600 includes a current limiting unit 610 for attenuating overvoltage and surge, a current sensing unit 630 for sensing an input current, and a current sensing unit 630, And a current control unit 620 for controlling the current of the AC power according to a detection signal from the AC power source.

The current limiting unit 610 includes three overvoltage protection surge absorbers Ab1 to Ab3, which are arranged in parallel to the AC power sources AC_L and AC_N, as shown in FIG. 5, And at least one varistor (MOV1 to MOV5, Varistor) for overvoltage protection, which is configured in parallel with an AC power source, and a line filter for removing one noise.

The surge absorber attenuates the initial instantaneous overvoltage or surge current in the instantaneous overvoltage or surge current applied from the power source. The varistor protects the circuit of the power circuit by absorbing the instantaneous overvoltage or surge current in the overvoltage or surge current momentarily applied from the power source. do.

The surge current is a very short time, but the waveform and amplitude vary according to the flowing time. At first, the waveform is high and the amplitude is small. However, as time passes, the waveform becomes low and the amplitude becomes large. Therefore, since the surge absorber has a faster reaction speed than the varistor, it is constructed in front of the varistor to attenuate the surge current input to the AC stabilization module first, and the surge current that can not be attenuated by the surge absorber is absorbed by the varistor. In other words, among the input surge currents, the initial surge current, that is, the surge current having a high peak and a short cycle, attenuates to the surge absorber, the surge current having a low peak of the latter period and a long period is absorbed by the varistor, And completely absorbs and absorbs the surge current.

The current sensing unit 630 senses the current of the AC power input to the AC stabilization module 600 and transmits a sensing signal to the current control unit 620. Particularly, when the overcurrent is inputted from the commercial power source due to natural phenomenon such as lightning, lightning, external electrical work, unstable power supply, etc., the current sensing unit 630 senses the input of the overcurrent, (620).

The current control unit 620 controls the current value of the AC power outputted to the power supply unit 700 based on the sensing signal input from the current sensing unit 630. For example, when the current sensing unit 630 receives a detection signal indicating that an overcurrent is input from the commercial power supply, the current control unit 620 adjusts or limits the input overcurrent to a rated current and outputs the overcurrent to the power supply SMPS .

5, the current control unit 620 is disposed behind the current limiting unit 610 and controls the AC currents AC_L and AC_N applied from the current limiting unit 610 to the appropriate load capacities of the LED modules The voltage is lowered and fine-tuned to supply the power to the power supply. To this end, the current controller 620 includes a plurality of capacitors C1 and C2 configured in parallel.

The current control unit 620 is a part for lowering the AC input voltage with the capacitor as the main axis. The current control unit 620 is capable of adjusting the voltage value that decreases according to the capacitance of the capacitor. The current control unit 620 is composed of a plurality of capacitors such as a capacitor. The alternating current applied to the current control unit 620 is stored in the capacitor C1 and charged. The excess current remaining in the capacitor C1 is stored in the capacitor C2 and charged. That is, in the case where the capacitor of the current control unit is Cn, the capacitor C1 is sequentially charged in the order of the capacitor C1 → the capacitor C2 → the capacitor Cn. When the charged alternating current becomes a certain value or more, And the electric current is supplied to the power supply 700 connected to the rear of the AC stabilization module 600.

Accordingly, the AC stabilization module 600 rectifies the AC power input from the commercial power supply, removes the noise, and generates surges caused by natural phenomena such as lightning, lightning, and overvoltages caused by external electrical work or unstable power supply And the overcurrent, the power supply circuit can be stably protected and the rated life can be maintained. In addition, the current mode controls the circuit to generate a constant output to the power supply.

The switching power supply SMPS supplies a commercial power source (for example, 220 V or 110 V AC power) supplied from the AC stabilization module 600 to a driving power source (not shown) for driving the LED of the LED module 400 For example, a DC power supply). A circuit diagram of an 18 W power supply (SMPS) according to an embodiment of the present invention is shown in FIG.

As shown in FIG. 6, the 18 W power supply of the present invention is designed as a flyback converter. The flyback converter has a smaller number of elements than other converters, it is easy to vary the output voltage by changing the winding ratio of the transformer, and the power supply and the load are electrically insulated by the transformer. In addition, a one-stage PFC circuit with its own power factor correction and constant voltage output characteristics was included for 90% or more power factor. In addition, the LC resonance filter was applied to greatly reduce the ripple component on the output side.

The DC stabilization module 800 transmits the DC driving power output from the power supply 700 to the LED module 400. The DC stabilization module 800 may include a driving power sensing unit 810 and a driving power control unit 820, as shown in FIG. The driving power sensing unit 810 is connected to each of the plurality of driving power lines and senses a connection state with the driving power lines and transmits a sensing signal to the driving power control unit 820 do. The driving power control unit 820 controls whether or not the driving power is output according to a sensing signal transmitted from the driving power sensing unit 810. The driving power control unit 820 stabilizes the direct current level of the power output while preventing the overvoltage or the overcurrent of the direct current applied from the power supply 700. [ The DC stabilization module 800 may be included in the power supply 700.

As described above, the ship LED light according to the present invention can be applied to various types of ship lighting, such as a temperature change that can be caused by a long voyage while protecting an overvoltage, an overcurrent, an LED from a surge, Can withstand the vibration, waterproof, salt and the like due to the air flow rate, and can lower the harmonic content (THD) and operate the lighting stably.

FIG. 8 is a graph showing the relationship between the power consumption of the 18W-class ship LED lighting and the LED lighting according to the embodiment of the present invention; the surge resistance (overvoltage / overcurrent prevention efficiency); the SMPS power factor; And a temperature test was conducted by the Korea Institute of Lighting Research (KIET).

As shown in the charts, the shipboard LED lighting of the present invention showed a lighting appliance efficiency of 85% or more and was suitable for opening and closing test and surge resistance. The SMPS power factor was 0.94 or more, the illuminance was 4,110 or more, / W or more. Also, it conforms to IP65 certification standard of outer enclosure protection grade, and it is confirmed that it is resistant to vibration due to air flow rate, waterproof, salt and so on in conformity with the results of the resistance test and LED defect rate test results. In addition, it is shown that the internal temperature of the lighting is less than 35 degrees when driving, so that the structure is designed to efficiently discharge heat.

Accordingly, it can be utilized not only as an engine room (engine room), a lighting room such as a boiler room, but also as an illumination outside the cabin, and can be used for railroad history, subway history, nuclear power plant, underground railroad, It can be used as lighting for special facilities.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Therefore, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. It will be obvious to those of ordinary skill in the art.

100: housing 110: hinge clip
120: Hollow 200 of power socket: Gasket
300: LED heat sink 310: through hole
320: fitting groove 400: LED module
500: diffusion cover 510: coupling groove
600: AC stabilization module 610: Current limiting unit
620: current control unit 630: current sensing unit
700: Power supply 800: DC stabilization module
810: driving power detecting unit 820: driving power controlling unit
900: Power supply circuit

Claims (12)

A housing having one side opened and forming a receiving portion inside;
A power supply circuit receiving an AC power and outputting driving power;
An LED module driven by the driving power source;
An LED heat sink for fixing the power supply circuit and the LED module by being electrically connected to a terminal provided in the power supply circuit disposed at a lower portion of the LED module disposed at an upper portion through the through hole; And
And a diffusion cover coupled to an upper side of the housing and diffusing light emitted from the LED module to the outside,
The power supply circuit includes:
An AC stabilization module for receiving and stabilizing the AC power;
A power supply unit for converting the power output from the AC stabilization module into DC power and outputting the DC power; And
And a DC stabilization module for stabilizing the DC power to generate the driving power and supplying the driving power to the LED module,
The AC stabilization module includes:
A current limiting unit capable of attenuating and outputting an instantaneous overvoltage and a surge current of the AC power source;
A current sensing unit sensing a current of the AC power source and outputting a sensing signal when the current of the AC power source is an overcurrent; And
And a current control unit responsive to the detection signal to limit the current of the power output from the current limiting unit to the energizing current received by the power supply unit and output the limited current to the power supply unit,
The AC power is input to the current limiting unit through the first line AC_L, the second line AC_N, and the third line GND,
Wherein the current-
A first surge absorber Ab1 connected between the first line AC_L and the second line AC_N to attenuate an initial instantaneous overvoltage or a surge current in an instantaneous overvoltage or a surge current of the AC power source;
(AC_L) and the second line (ACN) in parallel with the first surge absorber (Ab1) and arranged in the rear of the first surge absorber (Ab1) First and second varistors (MOV1, MOV2) capable of attenuating a momentary overvoltage or a surge current in an overvoltage or a surge current;
And a line filter (Line) disposed behind the first and second varistors (MOV1, MOV2) for connecting the first line (AC_L) and the second line (AC_N) Filter);
And a second line (AC_L) and a third line (GND) disposed behind the line filter to attenuate an initial instantaneous overvoltage or a surge current in an instantaneous overvoltage or a surge current of the AC power source A second surge absorber (Ab2) that can be used;
(AC_L) and the third line (GND) in parallel with the second surge absorber (Ab2) arranged in the rear of the second surge absorber (Ab2) A third varistor (MOV3) capable of attenuating a momentary overvoltage or a surge current in an overvoltage or a surge current;
(AC_N) and the third line (GND) disposed at the rear of the third varistor (MOV3) to attenuate the initial instantaneous overvoltage or surge current in the instantaneous overvoltage or surge current of the alternating current power source A third surge absorber Ab3 that can be used;
(AC_N) and the third line (GND) in parallel with the third surge absorber (Ab3), and the third surge absorber (Ab2) is connected in parallel with the third surge absorber A fourth varistor (MOV4) capable of attenuating a momentary overvoltage or a surge current in an overvoltage or a surge current; And
(AC_L) and the second line (AC_N) are connected in parallel to each other, and the instantaneous overvoltage or the surge current of the AC power source is applied to the second instantaneous overvoltage or the surge current And a fifth varistor (MOV5) capable of attenuating the second varistor
The current control unit
A first capacitor (C1) disposed behind the fifth varistor (MOV5) and connecting between the first line (AC_L) and the second line (AC_N); And
And a second capacitor (C2) disposed behind the fifth varistor (MOV5) and connecting between the second line (AC_N) and the third line (GND). The overvoltage, overcurrent, And ship LED lights with power supply protection.
The method according to claim 1,
In the housing,
A plurality of hinge clips are provided along side edges,
In the diffusion cover,
And a plurality of coupling grooves for fastening the hinge clip along the side edges of the hinge clip. The overhead power source, the overdrive power source, the surge power source,
The method according to claim 1,
At the joining portion of the housing and the diffusion cover,
Characterized in that the gasket further comprises a ring-shaped gasket.
The method according to claim 1,
On the back surface of the housing,
Characterized in that it further comprises a fixing bracket that can be secured to the cabin wall. The ship LED light with overvoltage, overcurrent, surge and power supply protection.
The method according to claim 1,
At one end or both ends of the housing,
Wherein a socket is formed on the surface of the light emitting diode.
delete delete delete delete delete The method according to claim 1,
The power supply device includes:
Designed as a flyback converter,
Wherein the light source includes a one-stage PFC circuit and an LC series resonance filter.
The method according to claim 1,
The DC stabilization module includes:
A driving power sensing unit configured to correspond to each of output terminals connected to the plurality of driving power supply lines to sense a connection state of the driving power supply lines; And
And a driving power controller for controlling whether the driving power is output to the LED module according to a sensing signal transmitted from the driving power sensing unit.

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