KR101188236B1 - Apparatus for lighting control of lighting device - Google Patents

Abstract

The present invention relates to a light emitting device lighting control apparatus.
According to an embodiment of the present invention, there is provided a light emitting device illumination control device using a phase control signal, wherein the light emitting device illumination control device includes a first resistor, a second resistor, a first FET, a diode element, and a capacitor. One end of the first resistor and the drain D of the first FET are connected to one end of the phase control signal, and the other end of the first resistor is connected in parallel to the gate G of the first FET and the negative terminal of the diode element. The positive terminal of the diode element is connected to the other end of the phase control signal, and the source S of the first FET is connected to one end of the second resistor-capacitor connected in series, and the second resistor-capacitor connected in series The other end of is connected to the other end of the phase control signal, the capacitor provides a phase signal detection unit, characterized in that for detecting the on-off signal for the light emitting device.

Description

Light emitting device lighting control device {Apparatus for Lighting Control of Lighting Device}

Embodiment of the present invention relates to a light emitting device lighting control device. More specifically, when there is a phase control signal, the lighting control device is turned on, and if there is no phase control signal, the lighting control device is turned off, as well as controlling the current in controlling the illumination according to the phase of the phase control signal, thereby reducing heat generation and power. A light emitting device lighting control device for reducing consumption.

The contents described in this section merely provide background information on the embodiment of the present invention and do not constitute the prior art.

There are many types of lamps, but mainly fluorescent lamps are used, and the use of LED lamps (Lamp) is increasing in recent years.

Electronic ballasts are used for fluorescent lamps, and driving devices are used for LED lamps, and electronic ballasts for fluorescent lamps or driving devices for LED lamps are called lighting control devices.

The illumination control device for illumination control (hereinafter referred to simply as an illumination control device) receives a separate illumination control signal in addition to the power supply. The illumination control signal is controlled by communication, DC voltage, and phase control of AC power. And a method using a signal. The present invention particularly relates to a method of using a phase control signal of an AC power source.

1 is a block diagram illustrating an example of a lighting control device.

As shown in FIG. 1, the lighting control apparatus 100 includes a phase width detector 110, a phase signal detector 120, a driver 130, a first rectifier 140, a second rectifier 150, and a smoother 160. ) May be included.

The lighting control device 100 receives the phase control signal and rectifies and detects the presence or absence of the phase control signal to turn on / off the lighting control device, and to detect the pulse width of the phase control signal to adjust illuminance.

In FIG. 1, when the phase control signal is input to the second rectifier 150, the second rectifier 150 outputs the rectified phase control signal.

The phase width detector 110 receives the phase control signal rectified from the second rectifier 150 to detect the phase width to generate an illumination control signal.

The phase signal detector 120 receives the phase control signal rectified from the second rectifier 150 to generate an illumination signal, that is, an on / off signal.

The driver 130 receives the illuminance control signal from the phase width detector 110 to generate a driving current for the light emitting device 170, and receives an on / off signal from the phase signal detector 120. By controlling the on / off state of the 130, as a result, the on / off of the light emitting device 170 is controlled.

2 is a diagram illustrating an example of a circuit including a phase width detector 110 and a phase signal detector 120, and FIG. 3 is a phase control signal rectified in the circuit of FIG. 2 (that is, the drain voltage of FET1). Is a graph showing the waveform, the current of FET1, and the voltage of C1.

As shown in Fig. 2, a phase control signal is supplied to a power input. Phase control signals are usually obtained by phase-controlling an AC power supply with a triac.

The rectified phase control signal is obtained by rectifying the phase control signal by the second rectifying unit 150.

When the width of the turn-on period of the rectified phase control signal is β and the minimum value is β _min , the illuminance becomes minimum when β is β _min and the illuminance increases as β increases.

2 is a type of circuit used to obtain an on-off signal and an illuminance control signal for the driver 130 in order to apply an on-off signal and an illuminance control signal of the driver. That is, the circuit of FIG. 2 turns on the current control circuit (ie, the driver 130) when the waveform exists in the rectified phase control signal and turns off the current control circuit when the waveform does not exist in the rectified phase control signal. For this purpose, a phase control signal is input to the circuit shown in Fig. 2 and a power supply circuit composed of FET1, R1, ZD1 and C1 is used. At C1, the voltage of ZD1 minus the turn-on voltage of FET1 is maintained.When the voltage of C1 decreases, a large amount of current is supplied through FET1, so that the voltage of C1 increases, and when the voltage of C1 increases, the current flowing through FET1 decreases. Keep the voltage on C1 at the desired value by lowering the voltage on C1. Thus, by a constant C1, PC1 is turned on if a waveform is present in the rectified phase control signal and PC1 is turned off if no waveform is present in the rectified phase control signal. PC1 operates as a continuous signal by the smoothing action of C1 (not as a pulse). The on-off signal, which is the output of PC1, is sent to the driver of the lighting control device.

On the other hand, R4, TR1, PC2, R5, and FET2, which are separate circuits from R1, ZD1, FET1, C1, R3, and PC1, are phase width detection circuits, and PC2 is turned on only in a section where the waveform of the rectified phase control signal exists. If not, PC2 is turned off. PC2 operates as a pulse signal and the output of PC2 receives the phase width signal as it is and is sent to the driver of the lighting control device.

In FIG. 3, when the drain voltage of the FET1 exhibits the waveform as shown in FIG. 3A, as shown in FIG. 3B, the current of the FET1 does not flow over the entire period of β, but at the point where the phase of the rectified phase control signal starts. Intensive flow in short intervals. This is because C1 is charged at the beginning of the β period, and the voltage of C1 increases. However, the period in which the current flows through FET1 is the period where the voltage of the drain of FET1 is high, and the voltage of the drain of FET1 has a high voltage of about 300 V, and the voltage of C1 is usually about 10 V, so most of the voltage drops from FET1 and thus FET1 This is caused by a lot of losses in the power loss is a lot of heat generation problem occurs.

In order to solve this problem, an embodiment of the present invention, when there is a phase control signal, the lighting control device is turned on, if there is no phase control signal, the lighting control device is turned off, as well as the current in controlling the illumination according to the phase of the phase control signal The main purpose is to control heat generation and reduce power consumption.

In addition, the purpose is to simplify the circuit and increase the economic efficiency by configuring the phase width detection circuit and the phase signal detection circuit as one circuit.

In order to achieve the above object, an embodiment of the present invention provides a light emitting device lighting control device using a phase control signal as input, wherein the light emitting device lighting control device includes a first resistor, a second resistor, a first FET, and a diode device. And a capacitor, wherein one end of the first resistor and the drain D of the first FET are connected to one end of the phase control signal, and the other end of the first resistor of the gate G of the first FET and the diode device. It is connected in parallel to the (-) terminal, the (+) terminal of the diode element is connected to the other end of the phase control signal, the source (S) of the first FET is connected to one end of the second resistor-capacitor connected in series, The other end of the second resistor-capacitor connected in series is connected to the other end of the phase control signal, and the capacitor detects an on-off signal for the light emitting device.

The light emitting device illumination control device further includes a phase signal detection device that receives the phase control signal, senses a phase width thereof, and generates an illuminance control signal, and one end of the phase signal detection device includes a phase control signal. One end and one end of the first resistor may be connected in parallel, and the other end of the phase signal detecting element may be connected to the drain of the first FET.

The light emitting device illumination control device may further include a phase signal detection device that receives the phase control signal, senses a phase width thereof, and generates an illumination control signal, wherein the phase signal detection device comprises: the second resistor, the capacitor; It may be connected in series and connected between the source of the first FET and the other end of the phase control signal.

As described above, according to the embodiment of the present invention, when there is a phase control signal, the lighting control device is turned on, and when there is no phase control signal, the lighting control device is turned off, and in addition, the current in controlling the illumination according to the phase of the phase control signal. By controlling the power consumption, it reduces the power consumption and heat generation.

In addition, by configuring the phase width detector and the phase signal detector in one circuit, the circuit can be simplified to increase the economic efficiency.

1 is a block diagram illustrating an example of a lighting control device.
2 is a diagram illustrating an example of a circuit including a phase width detector 110 and a phase signal detector 120.
FIG. 3 is a graph showing the waveform of the rectified phase control signal (ie, the drain voltage of FET1), the current of FET1, and the voltage of C1 in the circuit of FIG.
4 is a diagram illustrating a circuit diagram of the phase signal detector 320 according to an embodiment of the present invention.
FIG. 5 is a graph showing the waveform of the drain voltage of FET1 (FIG. 5A), the current of FET1 (FIG. 5B), and the voltage of capacitor C1 (FIG. 5C) in the circuit of FIG. 4.
6 is a diagram illustrating an example in which the position of PC2 is changed in the circuit diagram of the phase signal detector 320 according to an exemplary embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. 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.

In addition, in describing the component of this invention, terms, such as 1st, 2nd, A, B, (a), (b), can be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."

1 is a block diagram showing a light emitting device lighting control apparatus 100 according to an embodiment of the present invention.

As shown in FIG. 1, a light emitting device lighting control having a function of receiving a phase control signal and detecting the presence or absence of a phase control signal to turn on / off the lighting control device and a function of detecting illuminance by detecting a pulse width of the phase control signal. The apparatus 100 may include a phase width detecting unit 110, a phase signal detecting unit 120, a driving unit 130, a first rectifying unit 140, a second rectifying unit 150, and a smoothing unit 160. In some instances, some of the components may be omitted.

When the phase control signal is input to the second rectifier 150, the second rectifier 150 rectifies the phase control signal. In the following description, it is assumed that the phase control signal is rectified to DC by the second rectifying unit 150 to generate an on-off signal and an illuminance control signal. However, in some embodiments, the phase control signal may be used without rectifying the phase control signal.

The phase width detector 110 receives the phase control signal rectified from the second rectifier 150 to detect the phase width to generate an illumination control signal.

The phase signal detector 120 receives the phase control signal rectified from the second rectifier 150 to generate an illumination signal, that is, an on / off signal.

The driver 130 receives the illuminance control signal from the phase width detector 110 to generate a driving current for the light emitting device 170, and receives an on / off signal from the phase signal detector 120. By controlling the on / off state of the 130, as a result, the on / off of the light emitting device 170 is controlled. Here, the light emitting device 170 may be used a variety of lighting, such as LED, fluorescent lamp, the present invention is not limited thereto.

When the main power is input to the first rectifying unit 140 and the first rectifying unit 140 outputs the rectified main power, the main power rectified through the smoothing unit 160 is smoothed so that the main power is driven by the driving unit 130. ) Is entered. The rectified main power input to the driver 130 is applied to the light emitting device 170 under the control of the driver 130 and controlled to emit light. Here, the main power source may be a general AC power source. The driving unit 130 is converted into alternating current (when the light emitting device is a fluorescent lamp) or direct current (when the light emitting device is an LED) through high frequency switching with respect to the rectified main power to drive the light emitting device load (fluorescent light or LED). At this time, the current flowing through the load controls the illuminance by adjusting the magnitude of the current flowing through the light emitting device according to the illuminance control signal.

The light emitting device lighting control device 100 controls the light emitting device 170 to turn on when there is a signal from the rectified phase control signal, but to turn off the light emitting device 170 completely when there is no signal, and the phase of the rectified phase control signal is changed. If it goes forward, the light intensity of the light emitting device 170 is brightened, and if the phase goes backward, the light intensity of the light emitting device 170 is darkened. To this end, the light emitting device lighting control device 100 includes a phase signal detection unit 120 to function to turn on / off the light emitting device 170 by detecting the presence or absence of a signal after rectifying the rectified phase control signal. The phase width detection unit 110 is provided to have a function of adjusting the illuminance by detecting the pulse width of the signal of the rectified phase control signal.

Meanwhile, according to an exemplary embodiment, the function of the phase width detector 110 may be implemented by being included in the phase signal detector 120. In this case, the phase signal detector 120 receives the phase control signal rectified from the second rectifier 150 to generate an on / off signal, and detects the phase width of the rectified phase control signal to control the illumination. Generate a signal.

4 is a diagram illustrating a circuit diagram of the phase signal detector 120 according to an embodiment of the present invention. In FIG. 4, the function of the phase width detector 110 is implemented by being included in the phase signal detector 120.

As shown in FIG. 4, the phase signal detector 120 according to an exemplary embodiment of the present invention may include a first resistor R1, a second resistor R2, a first FET FET1, a diode device, and a capacitor C1. And a phase signal detecting element. Here, the phase signal detection device may implement the phase width detection unit 110 and may use the photocoupler PC2 as shown in FIG. 4, but the present invention is not limited thereto. In addition, as an example of the diode device in the phase signal detection unit 120 according to an embodiment of the present invention, a zener diode ZD1 may be used as shown in FIG. 4, but the present invention is not limited thereto.

In FIG. 4, one end of the first resistor R1 and one end of the photocoupler PC2 are connected in parallel to one end of the rectified phase control signal, and the first FET FET1 is connected to the other end of the photocoupler PC2. Drain D is connected, the other end of the first resistor R1 is connected in parallel to the gate G of the first FET FET1 and the negative terminal of the zener diode ZD1, and the zener diode ZD1 The positive terminal of) is connected to the other end of the rectified phase control signal. A source S of the first FET1 is connected to one end of a second resistor R2 capacitor C1 connected in series, and the other end of the second resistor capacitor C1 connected in series is rectified phase control signal. Is connected to the other end of the Here, the positions of the second resistor-capacitor C1 may be interchanged.

FIG. 5 is a graph showing the waveform of the drain voltage of FET1 (FIG. 5A), the current of FET1 (FIG. 5B), and the voltage of capacitor C1 (FIG. 5C) in the circuit of FIG. 4.

The voltage of ZD1 is constant and the voltage of C1 is almost constant although there is some ripple component, and the voltage of R2 is constant because the gate-source threshold voltage of FET1 is also constant. When this display by a formula is the _{(V R2 = V ZD1 - -} V C1 V GSth) ( However, V _R2: R2, the voltage, V _ZD1: the ZD1 voltage, V _C1: the C1 voltage, V _GSth: FET1 of the gate Source threshold voltage. Therefore, the current IR2 flowing in R2 becomes IR2 = VR2 / R2, and if VR2 is constant, IR2 is also constant.

Thus, in Fig. 5, a constant current flows through FET1. The current flows evenly in the high and low parts of the drain voltage of FET1, minimizing losses. In other words, the loss in FET1 becomes drain-source voltage x drain (or source) current, so that the loss of current flows at a lower drain voltage is much less than that at a high drain voltage. Therefore, as shown in FIG. 5, the phase signal detector 120 according to the present invention has a waveform of FIG. 3 having a waveform of FIG. It consumes less power and generates less heat than circuits.

In addition, since the current flows more uniformly than the conventional method, the phase width detection unit 110 can be configured such that the PC2 is inserted into the drain of the FET1 in series as shown in FIG. 4 without forming a separate circuit.

The phase width of the rectified phase control signal is detected by PC2 and transmitted to the driver 130, and the on-off signal generated by C1 is connected to C1 in parallel with a third resistor (R3) -photocoupler (PC1) series. It may be detected by the circuit and transferred to the driver 130.

In the conventional circuit as shown in FIG. 2, since the current flows in the FET1 intensively only at the beginning of the phase instead of evenly in the entire phase signal section, the PC2 cannot be inserted in the FET1 in series and a separate phase width detection circuit should be used. However, in the present invention, since the PC2 can be inserted in series into the FET1, the circuit configuration can be simplified.

6 is a diagram illustrating an example in which the position of PC2 is different from the circuit diagram of the phase signal detector 120 according to an exemplary embodiment of the present invention.

As shown in Fig. 6, the phase width detection unit 110 may insert PC2 in series with the source of the FET1 to detect the phase width β of the rectified phase control signal.

In FIG. 6, the position of PC2 is connected in series between the source of the FET1 and the second resistor R2, or connected in series between the second resistor R2 and C1, or the other end of the phase control power source rectified with C1. It can be connected in series between and. That is, PC2 may be connected in series with the second resistor R2 and C1 to be connected between the source of FET1 and the other end of the rectified phase control power supply.

As such, it is very important to minimize the current consumption in the manner of detecting the phase control signal as in the embodiment of the present invention. This is because the lighting controller has to reduce even a very small current consumption because tens or hundreds are used at the same time.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. That is, all of the components may operate selectively in combination with one or more of them.

It is also to be understood that the terms such as " comprises, "" comprising," or "having ", as used herein, mean that a component can be implanted unless specifically stated to the contrary. But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, in the present invention, when there is a phase control signal, the lighting control device is turned on, and when there is no phase control signal, the lighting control device is turned off, and heat is generated by controlling current in controlling illumination according to the phase of the phase control signal. It is a useful invention that can reduce the power consumption, reduce the power consumption, and simplify the circuit.

Claims (3)

In the light emitting device lighting control apparatus using a phase control signal as an input,
The light emitting device lighting control device includes a first resistor, a second resistor, a first FET, a diode element and a capacitor,
One end of the first resistor and the drain (D) of the first FET are connected to one end of the phase control signal, and the other end of the first resistor is parallel to the gate (G) of the first FET and the (-) terminal of the diode element. (+) Terminal of the diode element is connected to the other end of the phase control signal, and the source (S) of the first FET is connected in series with a second resistor connected to one end of the capacitor and the second resistor connected in series. And the other end of the capacitor is connected to the other end of the phase control signal, wherein the capacitor detects an on / off signal for the light emitting device. The method of claim 1,
The light emitting device lighting control device,
And a phase signal detecting element for receiving the phase control signal and detecting a phase width thereof to generate an illumination control signal.
One end of the phase signal detecting element and one end of the phase control signal and one end of the first resistor are connected in parallel, and the other end of the phase signal detecting element is connected to the drain of the first FET; Lighting control device. The method of claim 1,
The light emitting device lighting control device,
And a phase signal detecting element for receiving the phase control signal and detecting a phase width thereof to generate an illumination control signal.
And the phase signal detecting element is connected in series with the second resistor and the capacitor and is connected between the source of the first FET and the other end of the phase control signal.

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