KR101691768B1 - A LED Driving Unit for Electromagnetic Waves Reduction - Google Patents

Abstract

The present invention relates to an LED driving apparatus for reducing an electromagnetic wave. More specifically, the present invention relates to an LED driving apparatus for reducing an electromagnetic wave which not only saves power consumption of an LED lighting and increases durability by reducing a heat amount generated when lighting the LED lighting, but also can restrain electromagnetic wave occurring. The LED driving apparatus comprises: a power supply unit for supplying alternating current power; a conversion unit for receiving the alternating current power, and converting the alternating current power into direct current power; a first current controller for controlling a current amount to operate a first lighting block according to the direct current power converted by the conversion unit; a second current controller for controlling a current amount to operate a second lighting block according to the direct current power converted by the conversion unit; a shielding unit connected between an output side of the first lighting block and an input side of the second lighting block, and operating the first and second current controllers in parallel or in serial-parallel according to a change amount of operation voltage; and a current amount determination unit for determining a control range of the current amount when the first and second current controllers operate in parallel or in series-parallel by the shielding unit.

Description

[0001] The present invention relates to an LED driving apparatus for reducing electromagnetic wave generation,

The present invention relates to an LED driving apparatus for reducing the generation of electromagnetic waves, and more particularly, to an LED driving apparatus which reduces power consumption of an LED lighting apparatus, reduces the amount of heat generated when the LED lighting apparatus is turned on, To the LED driving apparatus for reducing the generation of electromagnetic waves.

In general, an LED lighting apparatus using alternating electric energy or DC electric energy as a power source is generally used in order to limit an electric current of an LED and to use an impedance of a constant current resistance connected in series. In this case, a resistive impedance The power consumption of the electric energy is increased and the heat accumulates.

1, when the AC power source AC is supplied to the conversion unit 2 through the power source unit 1, the conversion unit 2 converts the supplied AC power source AC) to an appropriate DC power source (DC) necessary for driving the lighting blocks 4A, 4B made up of the light emitting diodes, and outputs the DC power to the current controller 3.

At this time, the lighting blocks 4A and 4B are connected in series. The current controller 3 controls the amount of current to be supplied to the primary lighting block 4A, The lighting blocks 4A and 4B can be turned on by supplying the primary lighting blocks 4A to the secondary lighting blocks 4B.

1, an AC voltage in the range of 0-220.5 V and a current of 100 mA is applied to an illumination block 4A (see FIG. 1) consisting of a plurality of LEDs (for example, 35) requiring a resistive load and a driving power of 3.15 V 4B, the conduction start voltage is 220.5 V x 0.7 = 154.35 V, and the voltage in the range where current conduction is possible is 220.5 V-154.35 V = 66.15 V, so that the emission power is 66.15 V x (0+ 100) mA / 2 = 3.308W.

Assuming that an AC voltage in the range of 220.5 V to 310 V and a current of 100 mA are supplied to the resistance load and the illumination blocks 4A and 4B respectively, the voltage in the range where the current is possible is 310V-220.5V = 89.5V , And the emission power is 89.5 V × (100 + 140) mA / 2 = 10.74 W.

Accordingly, in the conventional LED lighting apparatus of FIG. 1, the emission power is 3.308 + 10.74 = 14.05W, the power efficiency is 64.05 at 14.05W / 22W = 0.64, the conduction opening time is 30.3 degrees at 154.35V / 311V = 0.496 (1-n) / (1 + n) = 20% (n = 120 ° / 180 °) 22W-14.05W = 7.95W.

However, when the lifetime of each of the LEDs included in the illumination blocks 4A and 4B is about 30,000 hours, the peak current 140mA may be adjusted to 200mA in order to brighten the brightness of the illumination. However, in this case, 200) mA / 2 = 13.425 W, the emissive power is increased by about 2.7 W than the AC voltage in the range 220.5 to 310 V and the current of 100 mA is supplied to the resistive load and the illumination blocks 4A and 4B respectively, This has the disadvantage of shortening the life span of the lamp to 30,000 × (140/200) within 15,000 hours.

Meanwhile, the brightness can be adjusted by increasing the number of LEDs that constitute the illumination blocks 4A and 4B without changing the peak current in the conventional LED lighting fixture. However, since the conduction angle is narrowed, It causes problems.
As an LED lighting device using a conventional electromagnetic wave interrupting circuit (Japanese Patent Laid-Open No. 10-1496821), an LED lighting device has been proposed in which an aluminum heat sink collects electromagnetic waves, converts them into surface currents, and discharges them through a ground. The conventional art uses a heat sink to induce grounding of an electromagnetic wave, which does not directly block the electromagnetic wave through the LED driving circuit, resulting in a problem of inefficiency.
Prior art literature
Patent literature
(Patent Document 0001) Korean Patent Publication No. 10-1496821

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a current controller for controlling the amount of current applied to an illumination block when a current controller is connected in series to a plurality of lighting blocks, (LEDs) constituting an illumination block by applying only a limited current according to the conduction-starting voltage, thereby increasing the brightness due to lighting of the lighting block while lowering the peak current, In addition to saving power consumption, it also reduces the heat generated when the LED lighting fixtures are turned on to extend the life span. Especially, it enlarges the conduction angle of the lighting to prevent the LED light from glare or glare and compensates the disadvantages of using the AC power. While preventing the generation of electromagnetic waves due to the harmonics of the DC power supply, To provide an LED lighting fixture apparatus so as to be with the purpose.

As means for achieving the above object,

The present invention relates to a power supply unit for supplying AC power; A converter for receiving the AC power and converting the AC power to DC power; A first current controller for controlling an amount of current for operating the first illumination block according to the DC power converted by the converter; A second current controller for controlling an amount of current for operating the second illumination block according to the DC power converted by the converter; A shield connected between the output side of the first lighting block and the input side of the second lighting block and operating the first and second current controllers in parallel or in series or in series according to a variation amount of the operating voltage; And a current amount determination unit that determines the range of the current amount control when the first and second current controllers operate in parallel or in series, in parallel, or in series by the shielding unit; And a shielding unit control unit 600 connected to the sensing unit to detect whether the shielding unit is in error, wherein the sensing unit 500 senses whether a current flows in the shielding unit, And an error signal automatic output unit (1000) for outputting a continuous alarm signal when an alarm signal output command is issued by the shielding unit control unit; The automatic error signal output unit 1000 includes a power supply unit 1101 for applying a power supply signal by its own power supply; An error signal output unit 1102 for switching the power supply circuit when an error occurs in the shielding unit; An oscillation transformer 1103 which is supplied with electricity when the power supply unit 1101 is turned on and outputs a boosted AC current; A relay operation switching unit 1108 connected to the output terminal of the oscillation transformer 1103 and turned on by electrical supply; A relay switch 1107 installed at an output terminal of the switching unit 1108 for generating a magnetic force and generating a magnetic force; A first circuit connection switch sw1 that performs a function of energizing the circuit while the iron wire is pulled by the relay switch 1107; An error signal output power switch sw2 for supplying power to the error signal output control unit 1140 and displaying an error signal when the relay wire is pulled by the relay switch 1107; The first circuit connection switch and the base end are connected to each other and the emitter end and the collector end are connected to the oscillation transformer 1103 and the relay operation switching part 1108. The operation of the relay operation switching part 1108 pulls the iron piece When the first circuit connection switch sw1 and the error signal output power switch sw2 are forcibly turned off at this time, the closed circuit is broken, And the relay switch 1108 is turned on to turn on the first circuit connection switch sw1 and the error signal output power switch sw2 so as to continuously output an error signal And a switching unit 1118 for maintenance.

The first device may be charged up to a half of the peak voltage through the second lighting block, and then the first device may be charged to a first And the second element is charged to a half of the peak voltage through the first illumination block and then discharged to the second illumination block.

The shielding unit is a shielding diode having a cathode to which positive voltage of the first element is applied and an anode to which a negative voltage of the second element is applied.

Also, the shielding diode is shielded to shield the first and second current controllers in parallel when the operating voltage applied to the cathode is less than a predetermined voltage, and the shielding diode has an operating voltage applied to the cathode, And the first and second current controllers are connected in series if the voltage is within a range of a predetermined voltage, and the shielding diode is connected to the first and second current controllers in series when the operating voltage applied to the cathode is equal to or higher than a predetermined voltage .

The current amount determination unit may include a first controller connected between the first illumination block and the shield to control the amount of current at a certain level of power or less, a second controller connected between the second illumination block and the shield diode, 2 controller.

The first controller includes a switching element, a Zener diode and a resistor to which a reference voltage is connected in parallel at a base end of the switching element, and an emitter resistor connected to the emitter terminal of the switching element. , The switching device compares the voltage across the base end with the emitter voltage dropped by the emitter resistance at the emitter end so that the emitter voltage is maintained at a constant level or below, And when the emitter voltage is higher than the base voltage, the transistor is turned off.

The second controller includes a switching element, a Zener diode and a resistor to which a reference voltage is connected in parallel at a base end of the switching element, and an emitter resistor connected to the emitter terminal of the switching element. , The switching device compares the voltage across the base end with the emitter voltage dropped by the emitter resistance at the emitter end so that the emitter voltage is maintained at a constant level or below, And when the emitter voltage is higher than the base voltage, the transistor is turned off.

As described above, according to the present invention, when a current controller is connected in series to a plurality of lighting blocks, a current controller for controlling the amount of current applied to the lighting block is selected in parallel, in series or in series or in series, (LEDs) according to a conduction start voltage, thereby reducing power consumption of the LED lighting fixture by increasing the brightness of the lighting block while lowering the peak current, It is possible to reduce the amount of heat generated when the lighting apparatus is turned on to extend the life span and in particular to enlarge the conduction angle of the lighting so as to compensate for the disadvantages of the use of the alternating current power while preventing the light shaking or glare of the LED, Considering economical efficiency while preventing the generation of harmonics, it is expected that the effect of encouraging the use of AC power will be.

1 is a schematic operational circuit diagram of a conventional LED lighting apparatus.
2 is a schematic operational circuit diagram of an LED lighting apparatus according to a first embodiment of the present invention.
3 is a schematic operational circuit diagram of an LED lighting apparatus according to a second embodiment of the present invention.
Fig. 4 is a schematic operational circuit diagram of an LED lighting apparatus according to a third embodiment of the present invention. Fig.
5 is a graph of current amount control according to a third embodiment of the present invention.
6 is a circuit block diagram of an alarm signal output unit according to the present invention;
7 is a circuit diagram of an alarm signal output unit according to the present invention.

The operation principle of the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings and description. It should be understood, however, that the drawings and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention, and are not to be construed as limiting the present invention.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The terms used below are defined in consideration of the functions of the present invention, which may vary depending on the user, intention or custom of the operator. Therefore, the definition should be based on the contents throughout the present invention.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. The configuration is omitted as much as possible, and a functional configuration that should be additionally provided for the present invention is mainly described.

Those skilled in the art will readily understand the functions of the components that have been used in the prior art among the functional configurations that are not shown in the following description, The relationship between the elements and the components added for the present invention will also be clearly understood.

In order to efficiently explain the essential technical features of the present invention, the following embodiments properly modify the terms so that those skilled in the art can clearly understand the present invention, It is by no means limited.

As a result, the technical idea of the present invention is determined by the claims, and the following embodiments are merely illustrative of the technical idea of the present invention in order to efficiently explain the technical idea of the present invention to a person having ordinary skill in the art to which the present invention belongs. .

1 is a schematic operational circuit diagram of a conventional LED lighting apparatus.

2 is a schematic operational circuit diagram of an LED lighting apparatus according to a first embodiment of the present invention.

3 is a schematic operational circuit diagram of an LED lighting apparatus according to a second embodiment of the present invention.

Fig. 4 is a schematic operational circuit diagram of an LED lighting apparatus according to a third embodiment of the present invention. Fig.

5 is a graph of current amount control according to a third embodiment of the present invention.

6 is a circuit block diagram of an alarm signal output unit according to the present invention;

7 is a circuit diagram of an alarm signal output unit according to the present invention,

2 is a schematic operational circuit diagram of an LED lighting apparatus according to a first embodiment of the present invention.

Referring to FIG. 2, the power saving device of the LED lighting apparatus according to the first embodiment of the present invention includes a power source unit 10 for supplying an AC power source, The first and second current controllers 30 and 40, the shielding unit, and the current-amount determining unit 50, in addition to the converting unit 20 for converting the DC power to the DC power.

The first current controller 30 is configured to control an amount of current required for lighting the first illumination block 100 according to a DC power source converted by the converter 20.

The second current controller 40 is configured to control the amount of current required to turn on the second lighting block 200 according to the DC power converted by the converting unit 20. [

Here, the plurality of light emitting devices (LEDs) formed in the first and second illumination blocks 100 and 200 may have the same voltage value and different current value for lighting, , And the present invention has the same voltage value and current value.

For example, the first and second illumination blocks 100 and 200 may have 35 chip LEDs each having a voltage value of 3.1 V and a current value of 80 mA, or a voltage value of 3.15 V and a current value of 100 mA Thirty-five chip LEDs can be formed, but the present invention is not limited thereto.

The shielding unit is connected between the output side of the first lighting block 100 and the input side of the second lighting block 200 and is connected to the first and second current controllers 30 and 40 ) In parallel or series-parallel or in series.

The current amount determination unit 50 determines the range of current amount control when the first and second current controllers 30 and 40 operate in parallel, in series, in parallel, or in series by the shielding unit. The first and second elements C11 and C12 are applied so that the range of the current amount control is determined.

Here, the first element C11 is a charge-only capacitor that is charged to a half of the peak voltage through the second illumination block 200 and is discharged to the first illumination block 100, C12 are charged charges up to a half of the peak voltage through the first lighting block 100 and then discharged to the second lighting block 200. [

That is, the first element C11 is configured to be charged to a half of the peak voltage through the second illumination block 200, and the discharge is made up of the first illumination block 100. The second element C12, Is configured to be charged to a half of the peak voltage (311V) through the first illumination block (100), and to discharge the second illumination block (200).

Here, the peak voltage is 311V.

On the other hand, the shielding portion includes a shielding diode having a cathode to which a positive voltage (+) of the first element C11 is applied and an anode to which a negative voltage (-) of the second element C12 is applied The shielding diode D10 shields the first and second current controllers 30 and 40 when the operating voltage Vf applied to the cathode is less than a predetermined voltage (for example, 150 V) And the first and second current controllers 30 and 40 are connected in parallel to each other when the operating voltage Vf applied to the cathode is within a range of a predetermined voltage (e.g., 150 V to 220 V) And the first and second current controllers 30 and 40 are connected in series when the operating voltage Vf applied to the cathode is greater than or equal to a predetermined voltage (for example, 220 V).

2, when the AC power source AC is supplied to the conversion unit 20 through the power source unit 10, the power saving unit of the LED lighting apparatus according to the first embodiment of the present invention includes the steps of: The conversion unit 20 converts the AC power source AC into a DC power source DC and the converted DC power source DC is applied to the first illumination block 100 through the first current controller 30, The first illumination block 100 is turned on while the DC power applied to the first illumination block 100 charges the second element C12 included in the current amount determination unit 50. [

The DC power source DC converted and output through the conversion unit 20 is applied to the first element C11 included in the current amount determination unit 50 so as to charge the first element C11 The second illumination block 200 is turned on so that the second illumination block 200 is turned on.

At this time, a positive voltage (+) passing through the first element (C11) is applied to the cathode of the shielding diode (D10) which is a shielding part connected to the first and second illumination blocks (100, 200) A negative voltage (-) passing through the two elements C12 is applied to the shielding diode D10 when the operating voltage Vf applied to the cathode is less than a predetermined voltage (e.g., 150 V) D10 are shielded to connect the first and second current controllers 30 and 40 in parallel.

When the operating voltage Vf applied to the cathode of the shielding diode D10 is within a range of a predetermined voltage (for example, 150V to 220V220V), the first and second current controllers 30 and 40 When the operating voltage Vf applied to the cathode of the shielding diode D10 is equal to or higher than a predetermined voltage (for example, 220 V), conduction is established and the first and second current controllers 30 40 are connected in series.

For example, when the first and second illumination blocks 100 and 200 have 35 chip LEDs having a voltage value of 3.1 V and a current value of 80 mA, respectively, the operation voltage Vf is 3.1 V × 35 = The first and second elements C11 and C12 are charged from the conduction start voltage to 1/2 of the peak voltage since the conduction start voltage is 75.95 V which is 70% of the operation voltage Vf The shielding diode D10 is shielded and the first and second current controllers 30 and 30 are turned on and off because the operating voltage Vf applied to the cathode of the shielding diode D10 is less than a predetermined voltage (40) operate in parallel to control the current amount of the first and second illumination blocks (100, 200) to 80 mA.

That is, 35 chip LEDs having a voltage value of 3.1 V and a current value of 80 mA are constituted so that when the first and second current controllers 30 and 40 operate in parallel, the operating voltage Vf is 3.1 V x 35 Is 108.5 V and the conduction start voltage is 108.5 V x 0.7 = 75.95 V, the voltage in the range in which current conduction is possible is calculated to be 108.5 V-75.95 V = 32.55 V through calculation of the operating voltage V f and the conduction starting voltage When the first and second current controllers 30 and 40 operate in parallel to control the amount of current of the first and second illumination blocks 100 and 200 to be 80 mA, The emission power of the light source 200 is 32.55 V x 80 mA = 2.604 W.

On the other hand, when the first and second illumination blocks 100 and 200 have 35 chip LEDs having a voltage value of 3.15 V and a current value of 100 mA, respectively, the operation voltage Vf is 3.15 V × 70 = 220.5 V and the conduction start voltage is 154.35 V which is 70% of the operation voltage Vf, the first and second elements C11 and C12 are charged from the conduction start voltage to 1/2 of the peak voltage , The operating voltage Vf applied to the cathode of the shielding diode D10 is higher than a predetermined voltage (for example, 150 V), so that the shielding diode D10 is gradually turned on and the first and second current controllers 30 and 40 Operate in series and in parallel to control the current amount of the first and second illumination blocks 100 and 200 to be 100 mA.

That is, 35 LEDs having a voltage value of 3.15 V and a current value of 100 mA are configured so that when the first and second current controllers 30 and 40 operate in series-parallel, the operating voltage Vf is 3.15 V × 70 = 220.5 V and the conduction initiation voltage is 220.5 V x 0.7 = 154.35 V, the voltage in the range in which current conduction is possible is calculated as 154.5 V-108.5 V = 45.85 V When the first and second current controllers 30 and 40 are operated in parallel and the current amount of the first and second illumination blocks 100 and 200 is controlled to be 100 mA, 100) 200 is 45.85V x 80mA = 3.668W. When the first and second current controllers 30 and 40 are operated in series, a voltage in a range in which current conduction is possible is equal to the operating voltage Vf, The first and second current controllers 30 and 40 are operated in parallel and the first and second lighting blocks 100 and 200 are operated while calculating 220.5V-154.35V = 66.15V through the calculation of the conduction start voltage. Is controlled to be 100 mA, the first and second lights The emission power of the blocks 100 and 200 is 66.15V x (100 + 120) mA / 2 = 5.954W.

In the first and second illumination blocks 100 and 200, 35 chip LEDs each having a voltage value of 3.15 V and a current value of 120 mA are formed, the operating voltage applied to the cathode of the shielding diode D10 The current is increased from 100 mA to 120 mA so that the shield diode D10 is conductive and the first and second current controllers 30 and 40 are turned on when the voltage Vf gradually increases to within a range of 220.5 V to 305 V. Accordingly, Operates in series to control the amount of current of the first and second illumination blocks 100 and 200 to 120 mA.

That is, when 35 LEDs having a voltage value of 3.15 V and a current value of 120 mA are configured and the first and second current controllers 30 and 40 are operated in series, the operating voltage Vf is 3.15V x 70 The first and second current controllers 30 and 40 are operated in series and the first and second lighting blocks 30 and 40 are turned on while the voltage in the range where the current is allowed to flow is calculated as 305 V - 220.5 V = (100 + 120) mA / 2 = 9.295 W when the current amount of the first and second illumination blocks 100 and 200 is controlled to be 120 mA.

Therefore, the total emission power of the parallel section, the serial section and the serial section is 2.604W + 3.668W + 5.954W + 9.295W = 21.521W, and the power efficiency according to the emission power is 98.52W / (14 ° x 2) = 152 °, and the power ratio is 1-n / 1 + n = 8.4% (n) = 152/180), and the insufficient power is 22W-21.521W = 0.48W. The present invention reduces the peak current and improves the power efficiency to increase the brightness according to the lighting of the first and second lighting blocks 100 and 200 Thereby preventing the light from being shaken or glare. As a result, it is possible to reduce the overall power consumption and to extend the life of the light emitting devices constituting the first and second lighting blocks 100 and 200 .

3, the current amount determining unit 50 is controlled by the first and second controllers 51 and 52 without using the first and second elements C11 and C12, which are the charge-only capacitors, 52) according to the second embodiment of the present invention.

That is, the first controller 51 included in the current amount determining unit 50 of the second embodiment of the present invention is connected between the first lighting block 100 and the shielding diode D10, (52) is connected between the second lighting block (200) and the shielding diode (D10).

The first controller 51 includes a switching element Q11 as an NPN transistor and a zener diode ZD11 having a reference voltage (for example, 1.8 V) connected in parallel to the base end of the switching element Q11 And the emitter resistor R12 connected to the emitter terminal of the switching element Q1 so that the switching element Q11 is connected between the voltage Vb applied to the base end and the emitter resistor R12, The emitter voltage Ve of the second current controller 40 is lowered by the emitter resistance R12 so that the current amount control of the second current controller 40 is performed at a constant level (Ve) is smaller than or equal to the base voltage (Vb), and when the emitter voltage (Ve) is greater than the base voltage (Vb), the off operation is performed.

The second controller 52 includes a switching element Q21 which is a PNP transistor and a zener diode C21 having a reference voltage (for example, 1.8 V) connected in parallel to the base end of the switching element Q21 And the emitter resistor R22 connected to the emitter terminal of the switching element Q21. The switching element Q21 thus has a voltage Vb across the base end The emitter voltage Ve of the first current controller 30 is lowered by the emitter resistance R22 at the emitter terminal so that the current amount control of the first current controller 30 is performed at a constant level Is turned on when the voltage Ve is lower than or equal to the base voltage Vb and turned off when the emitter voltage Ve is greater than the base voltage Vb.

That is, the first and second controllers 51 and 52 according to the second embodiment of the present invention apply a negative voltage to the negative electrode of the shielding diode D10 connected to the first and second lighting blocks 100 and 200 The negative voltage is applied to the anode and the operating voltage Vf applied to the cathode of the shielding diode D10 is lower than a predetermined voltage (for example, 150 V) The second current controller 30 or 40 operates in parallel or the operation voltage Vf applied to the cathode of the shield diode D10 is within a range of a predetermined voltage (e.g., 150 V to 220 V) The current controllers 30 and 40 operate in series or in parallel with each other so that the operating voltage Vf applied to the cathode of the shielding diode D10 becomes greater than a predetermined voltage The first and second controllers 51 and 52 are turned on and off while the two current controllers 30 and 40 are operated in series and the first and second current controllers 30 and 40 40 of the first and second illumination blocks 100, 200 It is possible to selectively control the ryuryang.

Hereinafter, the same parts as in the first embodiment of the present invention are denoted by the same reference numerals, and a duplicate description thereof will be omitted.

FIG. 4 is a circuit diagram of a third embodiment of the present invention, which includes a power supply unit 10 for supplying AC power; A converter 20 for receiving the AC power and converting the AC power to DC power; And an eleventh current controller 401 is connected to an output terminal of the converting unit 20 and the eleventh to thirteenth lighting blocks 100, 200, 300 And a twelfth current controller 402 is connected between the eleventh and twelfth lighting blocks 100 and 200. The twelfth and thirteenth lighting blocks 200 and 300 are connected to each other, And a thirteenth current controller 403 is connected between them.

The light emitting elements included in the eleventh and twelfth illumination blocks 100 and 200 have the same voltage value and current value for turning on the light emitting elements. The voltage value and the current value for lighting are different from the voltage value and the current value for lighting the light emitting elements formed in the eleventh and twelfth illumination blocks 100 and 200. [

5, the eleventh and twelfth current controllers 401 and 402 are respectively connected to the 11th and 12th lighting blocks 100 and 200 with a conduction starting voltage (e.g., 148.8 V) And the thirteenth current controller 403 is configured to apply a limited current (for example, 80 mA) according to the conduction starting voltage (e.g., 73.2 V) to the thirteenth lighting block 300 And the thirteenth current controller 403 controls the current amount control of the third illumination block 300 when the current control of the second illumination block 200 is controlled by the twelfth current controller 402 And the cut-off bias is configured to be performed by the twelfth current controller 402.

In addition, the first current controller 401 may control the amount of current (e.g., current) that may flow to the first, second, and third lighting blocks 100, 200, and 300 according to the variation amount of the current conduction start voltage (226.8V to 311V). When the amount of change in the current conduction start voltage (226.8 V to 311 V) reaches a peak voltage (e.g., 311 V), the first, second, and third lighting blocks 100, The amount of current can be controlled so that a current exceeding a current (for example, 120 mA) that can be conducted to the power supply 300 can be controlled.

That is, in the third embodiment of the present invention, the 11th, 12th, and 13th current controllers 401, 402, and 403 are disposed in the middle of the first, second, and third lighting blocks 100, 200, The current controllers 401, 402, and 403 control the current amounts of the first, second, and third lighting blocks 100, 200, and 300 in multiple stages Thereby increasing the brightness of the first, second, and third lighting blocks 100, 200, and 300 while increasing the brightness of the first, second, and third lighting blocks 100, 200, and 300 so as to prevent the light from being shaken or glare, The life of the light emitting devices constituting the first, second, and third lighting blocks 100, 200, and 300 can be extended.

If the shielding unit is in error, the shielding unit control unit 500 detects the error and outputs the error signal to the automatic error outputting unit 1000. The error detecting unit 500 detects the error of the shielding unit by checking whether current flows through the shielding unit. And outputs an error signal when the shielding portion fails.

The configuration of the error signal automatic output unit 1000 of the present invention is as follows.

A relay power supply unit 1101, an error signal output unit 1102, an oscillation transformer 1103, a relay operation switching unit 1108, a relay switch 1107, a first circuit connection switch sw1, A communication terminal power switch sw2, and a power source holding switching section 1118. [

The power supply unit 1101 applies a power supply signal by itself.

The error signal output unit 1102 switches the power supply circuit if the shielding unit does not respond.

The oscillation transformer 1103 is supplied with electricity when the power supply unit 1101 is turned on, and outputs the boosted AC current.

The switching unit 1108 for relay operation is connected to the output terminal of the oscillation transformer 1103 and is turned on by electrical supply.

The relay switch 1107 is installed at an output terminal of the relay operation switching unit 1108 and generates a magnetic force.

The first circuit connection switch (sw1) performs a function of energizing the circuit by pulling the iron wire by the relay switch (1107).

The power switch for outputting the error signal sw2 induces an error signal to be displayed by supplying power to the error signal output control unit 1140 while the iron strip is pulled by the relay switch 1107. [

The power supply switching unit 1118 is connected to the base end of the first circuit connection switch and the emitter end and the collector end are connected to the oscillation transformer 1103 and the relay operation switching unit 1108, The wire is pulled by the operation of the switch 1108 to form a closed circuit while switching is turned on, and then the operation of the relay switch 1107 is stopped. At this time, if the first circuit connecting switch sw1 and the error signal output power switch sw2 are forcibly turned off, the closed circuit is broken while the closed circuit is broken and the relay operating switch 1108 is turned on and the relay switch is turned on The first circuit connecting switch sw1 and the error signal output power switch sw2 are turned on to induce the error signal to be output continuously.

Hereinafter, the operation of the automatic error signal output unit will be described.

First, when the error signal output unit 1102 is turned on, a DC power source is connected to supply power to the oscillation transformer, and a high voltage is applied to the secondary side of the oscillation transformer.

The power source induced on the secondary side becomes a DC power source of a half wave through a rectifying diode, and this half wave DC power source becomes a more stable DC power source due to the charging and discharging action of the condenser.

This DC power source is applied to the anode terminal of the thyristor through the coil of the relay switch 1107, while the DC power source charges the capacitor through the resistor. The elevated voltage passes through the die and triggers the switching section 1108 for relay operation so that the node node and the cathode node are switched so that the operation of the relay switch is made, The circuit connection switch sw1 and the error signal output power switch sw2 are turned on to apply power to the error signal output control unit 1140 to display an error signal.

When the first circuit connection switch sw1 is activated, a base end of the power supply maintaining switch 1118 is activated, and a closed circuit is induced in the emitter end and the collector end of the power supply holding switch 1118 to supply power to the transformer Off.

That is, a voltage between the resistor 1109 and the capacitor 1110 flows through the diode 1120 to flow between the emitter terminal and the collector terminal of the power source holding switching unit 1118, and the resistance between the resistor by the bypass and the capacitor When the voltage between the resistor and the capacitor is lowered, the trigger signal to the switching unit for relay operation 1108 is stopped, so that the node end and the tail end are turned off and the current flows to the relay switch 1107 So that the power supply is continuously stopped for switching.

On the other hand, if the manager turns off the first circuit connecting switch and the error signal output power switch during the output of the error signal, no current flows in the closed circuit and accordingly the bias voltage flowing between the emitter end and the base end of the power- And the power supply switching unit 1118 is turned off.

The power supply switching unit 1118 is turned off to remove the bypass voltage between the resistor and the capacitor through the diode 1120 and the voltage is charged in the capacitor 1110.

The charged voltage causes a break-over phenomenon of the die 1111 and a trigger signal is output from the die to the switching section 1108 for auxiliary switch operation to move the iron piece, while maintaining the closed circuit, and at the same time, So that the error signal display unit 1150 can be continuously operated.

That is, according to the present invention, if the error factor is not cured, the warning sound is continuously output, and the lighting device can be operated after necessarily correcting the error factor.

10: power supply unit 20:
30: first current controller 40: second current controller
50: Amount of current determination unit C11: First element
C12: second element 51: first controller
52: second controller 100: first lighting block
200: second lighting block 300: third lighting block
401: eleventh current controller 402: twelfth current controller
403: thirteenth current controller D10: shielding diode

Claims (7)

A power supply unit for supplying AC power;
A converter for receiving the AC power and converting the AC power to DC power;
A first current controller for controlling an amount of current for operating the first illumination block according to the DC power converted by the converter;
A second current controller for controlling an amount of current for operating the second illumination block according to the DC power converted by the converter;
A shield connected between the output side of the first lighting block and the input side of the second lighting block and operating the first and second current controllers in parallel or in series or in series according to a variation amount of the operating voltage;
And a current amount determination unit that determines the range of the current amount control when the first and second current controllers operate in parallel or in series, in parallel, or in series by the shielding unit;
And a shielding unit control unit 600 connected to the sensing unit to detect whether the shielding unit is in error, wherein the sensing unit 500 senses whether a current flows in the shielding unit, And an error signal automatic output unit (1000) for outputting a continuous alarm signal when an alarm signal output command is issued by the shielding unit control unit;
The error signal automatic output unit 1000 outputs,
A power supply unit 1101 for applying a power supply signal by its own power supply;
An error signal output unit 1102 for switching the power supply circuit when an error occurs in the shielding unit;
An oscillation transformer 1103 which is supplied with electricity when the power supply unit 1101 is turned on and outputs a boosted AC current;
A relay operation switching unit 1108 connected to the output terminal of the oscillation transformer 1103 and turned on by electrical supply;
A relay switch 1107 installed at an output terminal of the switching unit 1108 for generating a magnetic force and generating a magnetic force;
A first circuit connection switch sw1 that performs a function of energizing the circuit while the iron wire is pulled by the relay switch 1107;
An error signal output power switch sw2 for supplying power to the error signal output control unit 1140 and displaying an error signal when the relay wire is pulled by the relay switch 1107;
The first circuit connection switch and the base end are connected to each other and the emitter end and the collector end are connected to the oscillation transformer 1103 and the relay operation switching part 1108. The operation of the relay operation switching part 1108 pulls the iron piece When the first circuit connection switch sw1 and the error signal output power switch sw2 are forcibly turned off at this time, the closed circuit is broken, And the relay switch 1108 is turned on to turn on the first circuit connection switch sw1 and the error signal output power switch sw2 so as to continuously output an error signal And a switching unit (1118) for holding the LEDs. The method according to claim 1,
The first and second elements are charged to a half of a peak voltage through a second illumination block, and then the first and second elements are turned on. Respectively,
Wherein the second element is charged to a half of the peak voltage through the first illumination block and then discharged to the second illumination block. 3. The method of claim 2,
Wherein the shield is a shielding diode having a cathode to which a positive voltage of the first element is applied and an anode to which a negative voltage of the second element is applied. . The method of claim 3,
Wherein the shielding diode is shielded so that the first and second current controllers are connected in parallel when the operating voltage applied to the cathode is less than a predetermined voltage, and the shielding diode is configured such that the operating voltage applied to the cathode is a constant voltage And the first and second current controllers are connected in series to each other when the operating voltage applied to the cathode is equal to or higher than a predetermined voltage, The LED driving apparatus comprising: 5. The method of claim 4,
Wherein the current amount determination unit includes a first controller connected between the first illumination block and the shield so that current amount control is performed at a power equal to or lower than a predetermined level, a second controller connected between the second illumination block and the shield diode, Wherein the LED driving device is configured to reduce the generation of electromagnetic waves. 6. The method of claim 5,
Wherein the first controller includes a switching element, a Zener diode and a resistor to which a reference voltage is connected in parallel at a base end of the switching element, and an emitter resistor connected to the emitter terminal of the switching element, The emitter voltage is lower than the base voltage so that the current amount control of the second current controller is performed at a predetermined level or lower by comparing the voltage across the base end with the emitter voltage dropped by the emitter resistance at the emitter end And when the emitter voltage is larger than the base voltage, the transistor is turned off. 6. The method of claim 5,
The second controller includes a switching element, a Zener diode and a resistor to which a reference voltage is connected in parallel at a base end of the switching element, and an emitter resistor connected to the emitter terminal of the switching element. The emitter voltage is lower than the base voltage so that the current amount control of the first current controller is performed at a predetermined level or less by comparing the voltage across the base end and the emitter voltage dropped by the emitter resistance at the emitter end And when the emitter voltage is larger than the base voltage, the transistor is turned off.

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