JP2013093250A - Lighting control method and lighting control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting control method capable of greatly simplifying a light control circuit of a lighting equipment, reducing manufacturing cost of the lighting equipment and vastly improving compatibility of the lighting equipment, and a lighting control device.SOLUTION: The lighting control method comprises: placing a phase comparing unit mainly connected between a rectifying unit and an oscillating unit on the primary side of a voltage transforming unit of a lighting equipment; setting a frequency multiplication signal of a pulse DC signal outputted through the rectifying unit, obtained by the phase comparing unit to a reference phase; transmitting a signal obtained by acquiring an AC power supply signal to synchronize a phase angle θ to a port enabling control of the oscillating unit; and synchronizing an oscillation circuit frequency of the oscillating unit and a θ phase angle of a multiplication signal of a rectifying unit export. A phase of the AC power supply prevents a flicker from occurring in the light source of the lighting equipment due to adjustment or change of the dimmer (triac; TRIAC).

Description

  The present invention relates to dimming technology for lighting equipment, and in particular, dimming light source lighting equipment using a light emitting diode (LED) or a cold cathode fluorescent lamp (CCFL) at an AC port, and a dimming method that does not generate flicker and It relates to the light control device related to it.

The appeal for energy saving CO2 reduction and the government of each country gradually banning the use of incandescent lamps, the advantages of high efficiency, energy saving and dimming of light emitting diodes (LEDs), street lights, cars It has been applied to lights, outdoor lighting, mood lighting, etc. and has attracted worldwide attention.

In the well-known lighting technology area, the brightness of the lighting equipment is usually adjusted with a dimmer. Similar dimmers (for example, triac tri-electrode AC switch, TRIAC) provide voltage by the light-emitting effect of trimmer lighting equipment light-emitting components (for example, halogen lamp, tungsten lamp, etc.) mainly based on their conductive conditions To do. For this reason, the dimmer in the home is installed separately from the lighting equipment (for example, the dimmer is installed at an opposing position on the wall) to achieve the purpose of adjusting the illumination luminance required by the user.

In addition, lighting equipment that uses light emitting diodes (LEDs) or cold cathode fluorescent lamps (CCFLs) as light sources uses a transformer to convert the AC power supply of commercial power into low-voltage DC power, and uses LEDs or DC-AC inverters with the CCFL. Then, the light is driven and emitted by the line. The circuit characteristics of light-emitting diodes (LEDs) become capacitor characteristics, so when adjusting the light source brightness of LED bulbs directly through the dimmer, if the dimmer (TRIAC) moves, the wavelength is cut and the flicker phenomenon occurs at the same time Does not occur.

Therefore, a kind of light-emitting diode lighting equipment on the market first adjusts the commercial power supply AC power input by the dimming control unit composed of the dimmer and the transformer unit to the dimming AC power supply, and then in the drive device The voltage doubler unit doubles the dimming AC power supply and converts it to a DC power supply. The driving DC power generated by the voltage doubler is within the operating voltage range of the dimming drive unit and the light emitting diode is driven to prevent the light emitting diode from generating flicker during dimming.

Taiwan Opening No. 201100211 Taiwan Public Release No. 2011117670 Taiwan Notice No. M366854

The problem to be solved is that this type of design complicates the architecture of the entire dimming circuit, lowers the compatibility of the lighting equipment body, and increases the manufacturing cost of the lighting equipment.

  The dimming method and its apparatus are mainly provided with a phase comparison unit connected between the rectification unit and the oscillation unit on the primary side of the transformation unit of the lighting equipment, and the phase comparison unit outputs the pulse direct current signal output through the rectification unit. Acquire frequency multiplication signal as reference phase, acquire AC power signal and synchronize phase angle θ and transmit to oscillation unit controllable port, oscillation circuit frequency of oscillation unit and multiplication signal of rectification unit export Synchronize the θ phase angle of. The main feature is that the phase of the AC power supply achieves the purpose of preventing flicker from occurring in the light source of the lighting equipment by changing the adjustment of the dimmer (TRIAC).

The light control method and apparatus of the present invention have the following advantages.
1. Efficiently solves the problem of flickering when lighting equipment that uses light emitting diodes (LEDs) or cold cathode fluorescent lamps (CCFL) as light sources is dimmed by a dimmer (TRIAC).
2. Since dimming can be performed at the AC port using a dimmer (TRIAC), the dimming circuit of the lighting equipment can be greatly simplified and the manufacturing cost of the lighting equipment can be reduced.
3. The dimmer (TRIAC) can be dimmed at the AC port, greatly expanding the compatibility of lighting equipment.

It is a basic composition architecture of the light modulation apparatus of this invention. 2 is a phase comparison unit circuit architecture of a preferred embodiment of the present invention.

It is an object of the present invention to provide a dimming method and a dimming apparatus related to the dimming method that do not generate flicker by dimming the lighting equipment of a light source using a light emitting diode (LED) or a cold cathode fluorescent lamp (CCFL) at an AC port The main purpose of

In order to achieve the above-described object, the kind of dimming method of the present invention mainly includes a phase comparison unit connected between the rectification unit on the primary side of the transformer unit of the lighting equipment and the oscillation unit, and the phase comparison unit includes: Obtain the frequency multiplied signal of the pulse DC signal output from the rectifier unit, change it to the reference phase, acquire the AC power signal and transmit the signal synchronized with the phase angle θ to the controllable port of the oscillation unit, and oscillate the oscillation unit Synchronize the circuit frequency and the θ phase angle of the multiplication signal of the rectifier unit export. Achieving the purpose of preventing flicker from occurring in the light source of the lighting equipment due to the adjustment change of the dimmer (TRIAC) with the phase of the AC power supply.

The kind of light control device of the present invention includes a rectification unit, an oscillation unit, a transformation unit, and a phase comparison unit. Among them, the rectification unit acquires a sine wave AC periodic signal of a commercial power source and converts it into a pulsed DC signal having a full-string waveform with a positive period. The oscillation unit acquires the pulse direct current signal of the rectification unit and converts it into a level signal, and determines the output of the power conduction cycle signal. The transformer unit continuously receives the voltage pulse signal corresponding to each voltage pulse signal, and outputs a voltage to the photoelectric component of the lighting equipment based on the input voltage of each voltage pulse signal.

The phase comparison unit acquires a frequency multiplied signal of the pulse DC signal output from the rectification unit and changes it to a reference phase, and further acquires an AC power supply signal and synchronizes the phase angle θ to the controllable port of the oscillation unit. Transmit and synchronize the oscillation circuit frequency of the oscillation unit and the θ phase angle of the multiplication signal of the rectification unit export. Achieving the purpose of preventing flicker from occurring in the light source of the lighting equipment due to the adjustment change of the dimmer (TRIAC) with the phase of the AC power supply.

The present invention provides a dimming method and a dimming apparatus related to the dimming method that do not generate flicker by dimming the lighting equipment of a light source mainly using a light emitting diode (LED) or a cold cathode fluorescent lamp (CCFL) at an AC port. To do. As shown in FIG. 1, the kind of dimming method of the present invention includes a phase comparison unit 40 connected between the rectification unit 10 and the oscillation unit 20 mainly on the primary side of the transformer unit 30 of the lighting equipment. 40, the frequency multiplied signal of the pulse DC signal output from the rectifying unit 10 is acquired and changed to the reference phase, the AC power supply signal is acquired and the signal in which the phase angle θ is synchronized is transmitted to the controllable port of the oscillation unit 20, By synchronizing the oscillation circuit frequency of the oscillation unit 20 and the θ phase angle of the multiplied signal output from the rectification unit 10, the phase of the AC power supply is flickered in the light source of the lighting equipment due to the adjustment adjustment of the dimmer (TRIAC) Achieve the purpose of preventing it.

As shown in FIG. 2, the kind of light control device of the present invention includes a rectifying unit 10, an oscillation unit 20, a transformation unit 30, and a phase comparison unit 40. Of which

The rectifying unit 10 acquires a sine wave AC periodic signal of a commercial power source and converts it into a full-string pulse DC signal having a positive period. The oscillation unit 20 acquires the pulse direct current signal of the rectification unit 10 and uses it to determine the output of the power conduction cycle signal as a level signal. The transformer unit 30 receives a continuous voltage pulse signal corresponding to each voltage pulse signal, and the voltage output is operated to the photoelectric component 50 of the lighting equipment based on the voltage input of each voltage pulse signal. The photoelectric component 50 may be a light emitting diode (LED) or a cold cathode fluorescent lamp (CCFL).

The phase comparison unit 40 obtains a frequency multiplied signal of the pulse direct current signal output from the rectifying unit 10 and uses it as a reference phase, obtains an alternating current power supply signal, and controls a signal synchronized with the phase angle θ to control the oscillation unit 20. By transmitting to the available port and synchronizing the oscillation circuit frequency of the oscillation unit 20 and the θ phase angle of the multiplication signal of the rectification unit export, the phase of the AC power supply can be adjusted by adjusting the dimmer (TRIAC). To achieve the purpose of preventing flicker from occurring. As a matter of course, the entire light control device increases the electric energy usage rate by electrically connecting a power factor control unit (PFC) 60 between the rectifying unit 10 and the oscillation unit 20.

When practicing the present invention, the phase comparison unit 40 further includes a voltage dividing circuit 41, a filter circuit 42, a clamp circuit 43, and a switch component 44. Of which

The voltage dividing circuit 41 acquires a frequency multiplied signal of the pulse direct current signal of the rectifying unit 10 and uses it as a reference phase. The filter circuit 42 is used to reduce the noise of the frequency multiplied signal. The clamp circuit 43 is used to limit the voltage of the frequency multiplication signal to 5 to 10V.

The switch component 44 is a transistor, a MOSFET, or an OP comparator, and the embodiment shown in the figure is a transistor. When the frequency multiplication signal is set to Low, the transistor does not conduct (open circuit), and when the frequency multiplication signal is set to High, the transistor conducts (closed circuit). At this time, the oscillation unit 20 is oscillated synchronously, and the purpose of synchronizing the oscillation circuit frequency of the oscillation unit 20 and the θ phase angle of the multiplied signal output from the rectifying unit 10 is achieved.

Compared with the known technology, the dimming method and the dimming apparatus related to the dimming method submitted by the present invention are a dimmer (light-emitting diode (LED) or cold-cathode fluorescent lamp (CCFL) used as a light source. When dimming with TRIAC, it effectively eliminates the problem of flickering. In particular, the dimming method and the dimming apparatus related thereto provided by the present invention can greatly simplify the dimming circuit of the lighting equipment by dimming the dimmer (TRIAC) at the AC port. The manufacturing cost of the equipment will be reduced and the compatibility of the lighting equipment will be greatly improved.

As described above, the present invention provides a dimming method and a dimming device associated therewith capable of implementing a lighting facility using a light emitting diode (LED) or a cold cathode fluorescent lamp (CCFL) as a light source, based on the law. Apply for an invention patent. The technical contents and technical features of the present invention are as described above. However, those skilled in the field may make various substitutions and modifications based on the presentation of the present invention without departing from the spirit of the present invention. Therefore, the protection scope of the present invention is not limited to the embodiments, and includes various substitutions and modifications that do not depart from the present invention, and belongs to the following claims.

DESCRIPTION OF SYMBOLS 10 Rectification unit 20 Oscillation unit 30 Transformer unit 40 Phase comparison unit 41 Voltage dividing circuit 42 Filter circuit 43 Clamp circuit 44 Switch part 50 Photoelectric part 60 Power factor control unit (PFC)

Claims (5)

In the dimming method,
A phase comparison unit connected between the rectification unit and the oscillation unit is installed on the primary side of the transformation unit of the lighting equipment, and the phase comparison unit acquires the frequency multiplied signal of the pulse DC signal output from the rectification unit and uses it as a reference phase. In addition, the AC power signal is acquired and the phase angle θ synchronized signal is transmitted to the control port of the oscillation unit, the oscillation circuit frequency of the oscillation unit and the θ phase angle of the multiplication signal of the rectification unit export are synchronized, and the AC A dimming method characterized in that the phase of a power source achieves an object of preventing flickering from occurring in a light source of a lighting equipment by adjusting and adjusting a dimmer (TRIAC). In the dimmer,
A rectifying unit that acquires a sinusoidal AC periodic signal of a commercial power source and converts it into a pulsed DC signal of a full-string waveform with a positive period;
An oscillation unit that acquires the pulse direct current signal of the rectification unit and converts it into a level signal, and determines the output of the power conduction cycle signal;
A transformer unit that continuously receives a voltage pulse signal corresponding to each voltage pulse signal connection, and outputs an input voltage of each voltage pulse signal to a photoelectric component of the lighting equipment;
Obtain the frequency multiplied signal of the pulsed DC signal output from the rectifier unit and change it to the reference phase.Acquire the AC power signal and transmit the signal synchronized with the phase angle θ to the controllable port of the oscillation unit. A dimmer comprising a phase comparison unit that synchronizes an oscillation circuit frequency and a θ phase angle of a multiplied signal output from a rectification unit. The phase comparison unit further includes:
A voltage dividing circuit that obtains a frequency-multiplied signal of the pulse direct current signal of the rectifying unit and changes it to a reference phase;
A filter circuit for reducing noise of the frequency multiplied signal;
A clamp circuit that limits the voltage of the frequency-multiplied signal to between 5 and 10V;
When the frequency multiplication signal is set to Low, the switch component does not conduct, but when the frequency multiplication signal is set to High, the switch component conducts, at which time the oscillation unit oscillates simultaneously, 3. The light control device according to claim 2, further comprising a switch component that achieves an object of synchronizing the oscillation circuit frequency and the θ phase angle of the multiplication signal of the rectified original export.   4. The light control device according to claim 3, wherein the switch component may be one of a transistor, a MOSFET, and an OP comparator.   The light control device according to claim 2, wherein the rectification unit and the oscillation unit are electrically connected to a power factor control unit (PFC).