KR20160018627A - Light driving apparatus and driving method thereof - Google Patents

Abstract

The present invention relates to a lighting driving apparatus which can be used in common in various types of dimmers, and a driving method thereof. The lighting driving apparatus comprises: a driving unit for driving a lighting body by supplying driving power to the lighting body depending on a control; and a universal dimming control unit for converting a range of a brightness control signal of an external dimmer into a first voltage range according to a preset ratio, and controlling power supply of the driving unit to control dimming.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a light driving apparatus,

The present invention relates to an illumination driving apparatus and a driving method thereof that can use various kinds of dimmers.

Generally, a certain area such as a building, an office, a room, and a classroom is provided with a light for the user to use the corresponding area.

Such lighting is mainly used for incandescent lamps and fluorescent lamps. In recent years, light emitting diodes (LEDs) have been replaced by incandescent lamps and fluorescent lamps due to advantages such as power consumption and use time.

On the other hand, as a drive device for driving the above-described illumination, a dimmer that adjusts the brightness as well as the switch on / off of the illumination may be used as well as the following prior art documents.

However, in general, such a dimmer may have a variety of dimming methods depending on the source dimmer or the sink dimmer. Also, in the case of the sink dimmer, the characteristic value may vary according to the maker, This is a difficult problem.

Particularly, the dimmer described above is already installed on a ceiling or a wall surface of a building, an office, a house, etc., and it is difficult to change or replace the dimmer, .

U.S. Published Patent Application No. 2012-0256558

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an illumination driving apparatus and a driving method thereof that can be commonly used for various kinds of dimmers.

According to one technical aspect of the present invention, there is provided a driving unit for supplying driving power to an illuminator in accordance with a control to drive the illuminator; And a general dimming control unit for converting a brightness control signal range of the external dimmer into a first voltage range according to a preset ratio to control power supply of the driving unit to control dimming.

According to one technical aspect of the present invention, the general dimming control unit may convert the voltage range or the impedance range of the brightness control signal of the external dimmer into the first voltage range.

According to one technical aspect of the present invention, the general dimming control unit includes: a voltage converting unit converting a voltage range or an impedance range of the brightness control signal of the external dimmer into the first voltage range; And a controller for recognizing a type of a corresponding dimmer according to a first voltage range from the converter and providing a dimming signal according to the brightness control signal.

According to one technical aspect of the present invention, the control unit comprises: a recognition unit for comparing a first voltage range from the conversion unit with a voltage range of a preset lookup table to recognize a type of the corresponding dimmer; And a dimming control unit for providing a dimming signal according to the brightness control signal according to the kind of the dimmer by the recognition unit.

According to one technical aspect of the present invention, the dimming control unit can control the dimming of the illuminant by controlling the current information of the illuminator detected by the driving unit.

According to one technical aspect of the present invention, the illuminator may be at least one light emitting diode.

According to one technical aspect of the present invention, the driving unit includes a power factor correcting unit for switching an input power source to correct a power factor; And a DC / DC converter for converting the DC power from the power factor correcting unit into the driving power according to the control.

According to one technical aspect of the present invention, the driving unit may further include a filter unit for rectifying and smoothing the AC power source and removing electromagnetic interference.

According to one technical aspect of the present invention, the DC / DC converter includes a converter for switching a DC power source from the power factor correction unit according to a feedback signal to convert the DC power source into the driving power source; And a feedback unit for detecting the current flowing through the illuminator and providing the detected current to the conversion unit.

According to another aspect of the present invention, there is provided a method of manufacturing a semiconductor device, comprising: reading a type of a previously used dimmer; And a step of converting the range of the brightness control signal into a first voltage range according to a preset ratio to control power supply to the illuminator to control dimming of the illuminator will be.

According to another technical aspect of the present invention, the step of controlling the dimming includes: setting a dimming range of a dimmer in a preset look-up table; Acquiring data of a connected dimmer; Comparing whether the data of the obtained dimmer is larger or smaller than the maximum value of the set dimming range; And changing the dimming range according to the comparison result or outputting dimming data to control the dimming of the illuminator.

According to another technical aspect of the present invention, it is possible to further include recording the changed dimming range.

According to the present invention, the dimming range is determined according to the voltage value, or the dimming range is set to the first voltage range from the various types of dimmers to the first voltage range according to the impedance value, There is an effect that can be used in common.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic configuration diagram of an illumination driving apparatus of the present invention; Fig.
FIGS. 2A and 2B are tables showing the types of dimmers and the characteristic values thereof.
Fig. 3 is a schematic configuration diagram of a general-purpose dimming control unit employed in the illumination driving apparatus of the present invention shown in Fig. 1; Fig.
4 is a flow chart showing a driving method of an illumination driving apparatus according to the present invention.
5A to 5D are graphs showing dimming control results of various kinds of dimmers by the illumination driving apparatus of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in order that those skilled in the art can easily carry out 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 same or similar reference numerals are used throughout the drawings for portions having similar functions and functions.

In addition, in the entire specification, when a part is referred to as being 'connected' with another part, it is not only a case where it is directly connected, but also a case where it is indirectly connected with another element in between do.

Also, to include an element means to include other elements, not to exclude other elements unless specifically stated otherwise.

Hereinafter, the present invention will be described in detail with reference to the drawings.

1 is a schematic configuration diagram of an illumination driving apparatus of the present invention.

Referring to FIG. 1, an illumination driving apparatus 100 of the present invention may include a driving unit 110 and a general dimming control unit 120.

The driving unit 110 supplies driving power to the illuminator A so that the illuminator A can emit light and the illuminator A can be at least one light emitting diode have.

The driving unit 110 can control the brightness of the illuminant A by controlling the supply of driving power to the illuminator A. [

To this end, the driving unit 110 may include a filter unit 111, a power factor correcting unit 112, and a DC / DC converting unit 113.

The filter unit 111 can rectify and smoothen the inputted AC power, remove the electromagnetic interference, and transmit it to the power factor correcting unit 112.

The power factor correcting unit 112 may correct the power factor by correcting the phase difference between the voltage and the current by switching the rectified power source and may also correct the power factor by adjusting the waveform of the current to estimate the waveform of the voltage.

The DC / DC converter 113 may switch the power factor corrected DC power source from the power factor correcting unit 112, convert the DC power factor into the driving power, and supply the DC power to the illuminator A. At this time, the power level of the driving power may vary depending on the control.

The general dimming control unit 120 can control the power supply level of the driving power of the DC / DC converting unit 113 according to the brightness control signal from the external dimmer B. [

On the other hand, the types of the external dimmer B may vary.

2A and 2B are tables showing types of dimmers and characteristic values thereof.

Referring to FIGS. 2A and 2B, a dimming method of a dimmer may include a source dimming method using a voltage and a sink dimming method using an impedance. The sink dimming method may have a variety of impedance ranges .

That is, as shown in FIG. 2A, when the dimming range of the source dimmer is set to 100% to 10%, the corresponding voltage value can be set to 10V to 1V.

On the other hand, as shown in FIG. 2B, the sink dimmer may have various impedance settings from the first to the third sink dimmers, and even if the dimming ratio is set to 100% to 10% 84Kohm, 200Kohm to 52Kohm, and 120Kohm to 32Kohm, respectively.

3 is a schematic configuration diagram of a general-purpose dimming control unit employed in the illumination driving apparatus of the present invention shown in FIG.

Referring to FIG. 3 together with FIG. 3, the general dimming control unit includes a voltage conversion unit 121 and a control unit 122 in order to generally use the illumination driving apparatus of the present invention for various types of dimmers, as described above. can do.

The voltage converting unit 121 may convert the range of brightness control signals from various kinds of dimmers, such as the first to the Nth dimmers, into a predetermined first voltage range. At this time, since the brightness control signal of the source dimmer has voltage information, it can be converted into a first voltage range that can be recognized by the control unit. The brightness control signal of the sink dimmer has impedance information, To a first voltage range which can be recognized by the first voltage range.

The control unit 122 may include a recognition unit 122a and a dimming control unit 122b.

The recognizing unit 122a can recognize the type of the corresponding dimmer by comparing the first voltage range from the voltage converting unit 121 with a predetermined voltage range of the lookup table.

The dimming control unit 122b may provide a dimming signal corresponding to the brightness control signal to the DC / DC converting unit 113 according to the type of the dimmer by the recognizing unit 122a.

The DC / DC converting unit 113 may include a converting unit 113a and a feedback unit 113b. The converting unit 113a may switch the DC power from the power factor correcting unit 112 according to a feedback signal, And the feedback section 113b can detect the current flowing through the illuminant A and provide it to the conversion section 113a.

That is, the conversion unit 113a can control the power supply level of the driving power according to the current information of the feedback detection signal, and the dimming control unit 122b can control the power supply level of the driving power from the feedback unit 113b to the conversion unit 113a The brightness of the illuminant A can be controlled by controlling the power level of the driving power supplied to the illuminator A by controlling the current information of the signal.

4 is a flow chart showing a driving method of the illumination driving apparatus of the present invention.

Referring to Fig. 4, the operation of the general-purpose dimming control unit 120 shown in Fig. 3 will be described in more detail.

First, the general-purpose dimming control unit 120 may read the type of a previously used dimmer stored in the look-up table (S10).

Thereafter, the range of the brightness control signal from the connected dimmer is converted into the first voltage range according to the predetermined ratio, and the power supply to the illuminator is controlled to control the dimming of the illuminator (S20 to S70).

More specifically, in step S20 to S70 of controlling dimming of the illuminator, a dimming range of a dimmer is set in a preset look-up table (S20), data of a connected dimmer is obtained (S30) After comparing the data of one dimmer with the maximum value or less of the set dimming range (S40); The dimming range may be changed according to the comparison result (S50), and the dimming of the illuminator may be controlled by outputting the dimming data (S60).

If the dimming range is changed, the changed dimming range can be recorded (S70).

5A to 5D are graphs showing dimming control results of various kinds of dimmers by the illumination driving apparatus of the present invention.

Referring to FIGS. 5A to 5D, it can be seen that the dimming control is performed at 10% to 100% in the case of the source dimmer as shown in FIG. 5A.

Similarly, as shown in FIGS. 5B, 5C, and 5D, it can be seen that the dimming control is smoothly performed at 10% to 100% even in the case of the first, second, and third sink dimmers.

As described above, according to the present invention, the dimming range is determined according to the voltage value or the dimming range is set to the first voltage range from the dimmers of various types to the dimmer according to the impedance value, An illumination driving device can be commonly used.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not intended to limit the invention to the particular forms disclosed. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: Lighting drive device
110:
111:
112: Power factor correction unit
113: DC / DC converter section
113a:
113b:
120: General-purpose dimming control unit
121:
122:
122a:
122b: a dimming control section

Claims (8)

10. An illumination driving apparatus for receiving a brightness control signal from a dimmer,
A driving unit for supplying driving power to the illuminator to drive the illuminator; And
A voltage converter for converting a voltage range or an impedance range of the brightness control signal input from the dimmer into a first voltage range according to a preset ratio; A dimming control unit for recognizing a dimmer type of a source dimmer or a plurality of sink dimmers and controlling dimming of the illuminator by controlling supply of driving power to the driving unit according to the brightness control signal;
And a driving circuit for driving the light source.
The apparatus of claim 1, wherein the control unit comprises:
A recognition unit for recognizing the type of the dimmer by comparing the first voltage range with a predetermined voltage range of a lookup table; And
A dimming control unit for controlling the dimming of the illuminant by varying a power supply level of the driving power according to the brightness control signal in accordance with the type of the dimmer recognized by the recognizing unit;
And a driving circuit for driving the light source.
3. The method of claim 2,
Wherein the dimming control unit controls the current information of the illuminator detected by the driving unit to vary the power supply level of the driving power.
The method according to claim 1,
Wherein the illuminator is at least one light emitting diode.
The apparatus of claim 1, wherein the driving unit comprises:
A power factor correcting unit for switching the input power source to perform power factor correction; And
A direct current / direct current (DC / DC) converter for converting direct current power from the backflow correction part into driving power and supplying the driving power to the illuminator;
And a driving circuit for driving the light source.
6. The apparatus of claim 5, wherein the driving unit comprises:
A filter unit for rectifying and smoothing the AC power source and eliminating total interference;
Further comprising:
Converting a potential range or an impedance range of the brightness control signal input from the dimmer into a first voltage range according to a preset ratio;
Recognizing a dimmer type according to the first voltage range, the dimmer being a source dimmer or a plurality of sink dimmers; And
Controlling dimming of the illuminator according to the brightness control signal in accordance with the type of the recognized dimmer;
≪ / RTI >
8. The method of claim 7,
Wherein the step of recognizing the dimmer type recognizes the type of the dimmer by comparing the first voltage range with a voltage range of a preset lookup table.

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