CN101932172B - Lighting device - Google Patents
Lighting device Download PDFInfo
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- CN101932172B CN101932172B CN201010210031.1A CN201010210031A CN101932172B CN 101932172 B CN101932172 B CN 101932172B CN 201010210031 A CN201010210031 A CN 201010210031A CN 101932172 B CN101932172 B CN 101932172B
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Abstract
The present invention relates to a power reforming method and associated lighting device, especially to a power reforming method and associated lighting device that selectively turn ON and OFF to reform current to follow voltage appropriately, which provides better heat dissipation, improving power factor and color mixing capability. The method can be applied in an electronic device, and comprises steps of rectifying, synchronizing, setting and turning ON and OFF. The electronic device comprises at least two loads, a rectifier, at least two drivers and a controller.
Description
Technical field
The present invention is that an electronic installation selectivity can open or cut out by a kind of power reforming method and lighting device thereof, particularly one, adjusts power reforming method and the lighting device thereof of current waveform.
Background technology
The whole world is to environmental protection and energy-conservationly more and more pay attention to, and from individual to enterprise, more and more people comes to realise energy-conservation importance.This trend is also complied with in the development of power supply unit manufacturing company, numerous and confused exploitation meets the new product of this trend, wherein, power supply Related product (as transformer) improves electrical source power factor to reach the object of maximum energy-saving by the mode reducing power void consumption.
So-called power factor, refer to the ratio (between 0 ~ 1) of effective power and total power consumption, power factor is lower, represents electric power efficiency lower, also represents that more electric power intangibly can disappear, wear away.Therefore, adjust if can effectively control time and the wave mode that AC current inputs an electronic installation, make electric current consistent as far as possible with the phase place of voltage, then power factor can be allowed to level off to 1, reach energy-conservation effect.
But, current great majority are such as white light emitting diode (White Light Emitting Diode, hereinafter referred to as WLED), fluorescent lamp (compact fluorescent lamp, hereinafter referred to as CFL) and cold cathode ray tube (cold cathode fluorescent lamp, hereinafter referred to as CCFL) etc. interior illuminator, if reach 0.9 for allowing the power factor of those lighting devices, large pogoniasis adds a power factor correction circuit, reach the object improving power factor, thus, the increase of cost will certainly be caused by setting up especially auxiliary circuit, relatively many expenses need be paid when user is bought.
In addition, light-emitting diode (Light emitting diodes, hereinafter referred to as LED) or Organic Light Emitting Diode (white light emitting diodes, hereinafter referred to as OLED), it, because of the advantage such as have that volume is little, reaction is fast, energy utilization rate is high and the life-span is longer, becomes the star of the tomorrow that market is had an optimistic view of.
But LED, WLED or OLED still have some unavoidable shortcoming, such as, if the design of light fixture cooling mechanism is bad, make LED cannot effectively control or discharge produced heat, then the operating temperature of self can be made to raise, and shorten the useful life of LED, anti-, if the working temperature of LED is lower, except increasing except use, also can improving luminous efficiency.
In addition, relevant illumination manufacturer is except improving power factor or utilizing LED to improve except luminous efficiency by power factor correction circuit at present, and the light also attempting being produced by colour mixture or light regulating technology (as pulse width modulation technology) different colours makes lighting device have more polynary purposes.
Pulse width modulation technology mainly uses the unlatching or closedown that switch lighting device fast, adjust the fluorescent tube of different colours or colour temperature, make it have the different work periods, this measure can make lighting device produce the light source of different colours, but, if when having plural fluorescent tube in same room with them, and the frequency of the pulse width modulation technology switch of these fluorescent tubes inconsistent time, just there will be what is called and bounce effect (beatingphenomenon), and cause the situation of interference each other between fluorescent tube and the flicker of outlet fluorescent tube to occur.
So, different frequencies often causes the upper maximum problem of illumination application, this problem of bouncing phenomenon almost occurs in all lighting devices, sometimes even can by the perception of human eye institute, in other words, for the frequency of different fluorescent tube is adjusted to consistent, mostly need use more accurately and the technology of costliness, but in electronics manufacturing process, also therefore produce different variations (the matching test circuit as complexity), the complexity on design of integer electro-circuit will certainly be caused and cause cost to increase.
Summary of the invention
An object of the present invention is to provide a kind of power reforming method improving an electronic device power factor, it uses open or close at least two loads be arranged on this electronic installation, addition, modulation and moulding is able to make the current waveform flowing through each load, reach to reduce and flow through the electric current of this electronic installation and the phase difference of voltage, and then reach the effect improving this electronic device power factor.
Another object of the present invention is to provide a kind of power reforming method can strengthening the radiating effect of a lighting device, it is used and opens or close at least two loads be arranged on this electronic installation, by reducing the opening time between each load, this even load is dispelled the heat in turn.
Another object of the present invention is the power reforming method providing a kind of control one illuminating device luminous color, and it is used and optionally opens at least two coloured light fixtures, the glow color of this lighting device of modulation.
For reaching above-mentioned purpose, method of the present invention is applied to the electronic installation that has at least two loads, and it includes the following step:
Rectifying step: be a pulsed dc voltage by an ac voltage rectifier;
Synchronisation steps: by a time reference signal and this pulsed dc voltage synchronization, this time reference signal is that PGC demodulation is in this pulsed dc voltage;
Setting procedure: be in the pulse period in this pulsed dc voltage, according to this time reference signal setting at least two clock signals, each clock signal has at least one rise time and at least one fall time, and this rise time and this fall time form an impulse duration; And
Open or close step: being open according to rise time of the clock signal of this correspondence and fall time correspondence or close this at least two load.
Use above-mentioned steps, and open at different time points or close the different loads of this electronic installation, import the respectively electric current of this load mutually to add and be shaped as the stacking electric current that has more this pulse direct current corrugating of convergence, therefore, use the phase difference reducing this pulse voltage and this stacking electric current, reach the effect improving power factor.
Wherein, use and implement this setting procedure and this unlatching or close step has at least two fluorescent tubes lighting device in one, can by opening in turn or closing this at least two fluorescent tube, make each fluorescent tube only can open a period of time, to reduce the work period of fluorescent tube out of the ordinary, and then fluorescent tube is allowed to produce less heat energy and to have the longer heat radiation time.
In addition, this setting procedure also can be applicable to a color-mixture device with this unlatching or closedown step, this uses to open or close this at least two coloured fluorescent tube respectively, to make those fluorescent tubes have the different work periods, allows coloured fluorescent tube can have the color range performance of more multi-layered time.
It should be noted that, to application that the present invention is thrown light on compared to known applications in colour mixture and light modulation etc., the present invention is by by the frequency of unlatching or shut-in time and this alternating voltage synchronization, and in this, the present invention the mutual interference between lighting device can not occur and produce to bounce the phenomenons such as flicker.
Again, an object of the present invention is to provide a kind of lighting device with better power factor, and it uses refigure current waveform, reaches with the phase difference reduced between this electric current and voltage.
Another object of the present invention is to provide a kind of lighting device with better radiating efficiency.
Another object of the present invention is then for providing a kind of lighting device with colour mixture efficiency.
For reaching aforementioned object, lighting device of the present invention includes at least two fluorescent tubes, a rectifier, at least two drivers and a controller.
Wherein this fluorescent tube can be a cold cathode ray tube (cold cathode fluorescent lamp, hereinafter referred to as CCFL), an outer electrode fluorescent lamp (external electrode fluorescent lamp, hereinafter referred to as EEFL), a nano-sized carbon fluorescent tube (carbon nanotube lamp, hereinafter referred to as CNL), a light-emitting diode (light emitting diode, hereinafter referred to as LED) fluorescent tube or an Organic Light Emitting Diode (organiclight emitting diode, hereinafter referred to as OLED) fluorescent tube.
This rectifier is connected to an external ac power source (such as a domestic sewing voltage), and can be a pulsed dc voltage by an ac voltage rectifier.
Each driver then can drive fluorescent tube corresponding thereto, that is can provide the electric current needed for each lamp luminescence, allows fluorescent tube operate.
This controller is connected between this rectifier and this driver, and a pulse width modulation (pulse-width modulation synchronous with this pulsed dc voltage can be produced, hereinafter referred to as PWM) signal, and can control this pulse direct current be pressed between a pulse period open or close at least one times.
This controller also can in the pulse period of this pulsed dc voltage, this load is closed when waveform is the position of 0 or 180 degree, this load is opened when waveform is the position of 90 or 270 degree, or at least open once this load when the position of other angles of waveform, by this, by moulding for the electric current of this lighting device, it can be made to be able to follow more accurately the waveform of this pulsed dc voltage, and to reach the effect improving power factor.
Meanwhile, this controller can use and sequentially open or cut out this driver, reduces the work period (duty cycle) of fluorescent tube, reduces to reach the power consumption making each fluorescent tube and reduces the object of heating.
In addition, this controller also can control this load and open respectively or cut out a period of time and carry out colour mixture, because use the work period of each fluorescent tube of adjustment, can be have different colors and colour temperature by each fluorescent tube, to send the light color of institute's wish generation.
Accompanying drawing explanation
Fig. 1 is the flow chart of power reforming method of the present invention.
Fig. 2 A is the waveform schematic diagram of the embodiment one using power reforming method of the present invention.
Fig. 2 B is another waveform schematic diagram of the embodiment one using power reforming method of the present invention.
Fig. 3 is the waveform schematic diagram of the embodiment two using power reforming method of the present invention.
Fig. 4 is the waveform schematic diagram of the embodiment three using power reforming method of the present invention.
Fig. 5 is the circuit framework figure of the lighting device of use power reforming method of the present invention.
Fig. 6 is the circuit framework figure of the white light emitting diode group of use power reforming method of the present invention.
Fig. 7 is the voltage oscillogram of Fig. 6.
Fig. 8 is leggy illuminator structure schematic diagram power reforming method of the present invention being applied to the parallel staggered cold cathode ray tube of bifilar helix.
Fig. 9 is the circuit framework figure of modified form controller of the present invention.
Embodiment
Please refer to shown in Fig. 1, a kind of power reforming method of the present invention can be applicable to one have in the electronic installation of at least two loads, and it includes the following step:
Rectifying step (10): be a pulsed dc voltage by an ac voltage rectifier;
Synchronisation steps (11): by a time reference signal and this pulsed dc voltage synchronization, wherein this time reference signal is that PGC demodulation is in this pulsed dc voltage;
Setting procedure (12): be in the pulse period in this pulsed dc voltage, according to this time reference signal setting at least two clock signals, each clock signal has at least one rise time and at least one fall time, and this rise time and this fall time form an impulse duration; And
This clock signal is in the frequency of this time reference signal, selects suitable frequency as the frequency of this clock signal.For example, though this time reference signal is identical with pulsed dc voltage phase place, but frequency can be this pulsed dc voltage (Taiwan be frequency be 60Hz) several times, and so get so high frequency, mainly person easy to use chooses the combination as this clock signal appropriate frequency of the frequency wanted in this time reference signal, in simple terms, if a time reference signal is 8 times of this pulsed dc voltage, i.e. 480Hz, user just removes two circuit by one and obtains the clock signal that has 240Hz, by two except two circuit, then can obtain the clock signal that has 120Hz, and when selecting 240Hz, i.e. minimum 50% work period that may correspond in alternating voltage, when selecting 480Hz, then minimum 25% work period that may correspond in alternating voltage, in other words, the frequency of clock signal is higher, can in this alternating voltage segment out more multizone as this suitable impulse duration.
This unlatching or closedown step (13), open according to rise time of this clock signal and fall time correspondence or close this at least two load, use the current waveform that adjustment flows through this electronic installation, to make the formation of this current waveform similar in appearance to the waveform of this pulsed dc voltage, the phase difference of this voltage and current is allowed to reduce, this unlatching or to close this at least two load be have an opening time and a shut-in time, this closedown or opening time are selected from this pulsed dc voltage, 10 to 90% work periods.
Under preferably situation, in the cycle of a pulsed dc voltage, this pulse direct current corrugating is position near 0 and 180 degree, close all loads (such as: 0 ~ 10 degree and 170 ~ 190 degree time close), near 90 and 270 degree during position, open all loads (such as: 60 ~ 120 degree and 240 ~ 300 degree), or when this pulse direct current corrugating is other angles (such as: 10 ~ 20 degree and 190 ~ 200 degree), at least open a load, by this can in this pulse period, the current waveform flowing through each load is allowed to carry out addition, to form a stacking electric current more identical with this pulse direct current corrugating.
But the above-mentioned impulse duration opened by position near special angle or closed, it can be exist for symmetrical or asymmetric pass, and in other words, in a pulsed dc voltage, the opening time point in each cycle does not need to be symmetrical arranged.
Therefore, there is closedown, at least one closedown, at least one unlatching completely once at least two loads in this electronic installation or open completely, it is moulding that the electric current flowing through this electronic installation can carry out modulation, allows the phase difference between electric current and voltage reduce, and then reach the object improving power factor.
Wherein this load can be a CCFL, an EEFL, a CNL fluorescent tube, a LED lamp tube or an OLED fluorescent tube.
Below namely more detailed illustrating is carried out with embodiment for power reforming method of the present invention.
Embodiment one
Please refer to shown in Fig. 2 A and Fig. 2 B, illustrate that the present invention will flow through two electric currents (20 of two loads in the present embodiment, 21) modulation is carried out moulding, to form a stacking electric current (22), the waveform of this stacking electric current (22) is allowed more to meet the waveform of a pulsed dc voltage (23), to improve power factor.
Embodiment two
Please refer to shown in Fig. 3, illustrate that the present invention will flow through three current waveforms (30 of three loads, 31,32) addition modulation is carried out moulding, to form a stacking electric current (33), the waveform of this stacking electric current (33) is allowed more to meet the waveform of a pulsed dc voltage (34), to improve power factor.
Embodiment three
Please refer to shown in Fig. 4, it is the result that the load (such as use different power supplys or set different electric currents and drive) power reforming method of the present invention being applied to the different voltage swing of two acceptance is described, for example, if be twice or half for driving another load (41) power supply for driving the power supply of a load (40), so will flow through this two load (40, 41) power supply carries out addition can produce the high and low layered stacking current waveform of four kinds of differences, this stacking current waveform includes current reference (45), low current benchmark (48), middle current reference (46) and high current reference (47), under such a condition, this stacking electric current with four kinds of high and low layered waveforms of difference still significantly can reach and improve power factor.
Refer again to shown in Fig. 1, power reforming method of the present invention also can be applicable in a lighting device, and can open or close at least two fluorescent tubes be mutually crisscross arranged in this lighting device respectively.
If the luminous efficiency of this at least two fluorescent tube is identical, only that one after the other is opened, compare with single fluorescent tube, not only can not reduce integrated light source to export, also more reduce because the time of closing increases because the power of indivedual fluorescent tube and the heat distributed are subject to indivedual fluorescent tube, there is better radiating effect on the contrary.
For example, if the work period of 50% opened in turn by two WLED fluorescent tubes on an electronic installation, its light source exported is the same with the effect that single WLED fluorescent tube opened for 100% work period, but in fact this two WLED fluorescent tube is the work period of indivedual unlatching 50%, the effect of its output light source can open the better effects if of 100% work period than single WLED fluorescent tube, because the luminous efficiency of WLED fluorescent tube can reduce along with the rising of temperature.
When this two WLED fluorescent tube is all closed time, the amount of residual heat will that produces of front luminescence can flow into the fin linked with this WLED fluorescent tube, when wherein a WLED fluorescent tube is opened, this WLED fluorescent tube can produce maximum luminous efficiency with the power of the best, that is, although there are two WLED fluorescent tubes, but generation two times power is not needed, the total amount of heat being sent to this fin by this WLED fluorescent tube can be increased, therefore can reach the effect of the operating temperature reducing WLED lighting device, and then improve the luminous efficiency of WLED.
But the above-mentioned bifilar formula WLED lighting device with two WLED fluorescent tubes can increase its manufacturing cost because of needs use two WLED fluorescent tube, but again due to the lighting apparatus of the single WLED fluorescent tube of tradition, the minimizing of index multiple can be presented its useful life because operating temperature increases, replacement rate is significantly improved, so compare, use bifilar formula WLED lighting device of the present invention, cost benefit may not be certain can be costly.
Power reforming method of the present invention also can be used in a color-mixture device, and it uses to open or close in this color-mixture device at least two coloured fluorescent tube a period of times respectively to reach the effect of colour mixture.
Wherein this coloured fluorescent tube can be a CCFL, an EEFL, a CNL fluorescent tube, a LED lamp tube or an OLED fluorescent tube, and this coloured fluorescent tube is respectively redness, green, blueness or the white fluorescent tube with different-colour, colour temperature is that a kind of explanation produces the method for color spectrum by white light source, the light source with higher color temperature (5000K) seems to level off to blueness, and the light source of colour temperature lower (3000K) then looks like redness.
In order to the light source of a particular color will be produced, the work period of different coloured fluorescent tube can be different, work period is then defined as fluorescent tube open-interval ratio in all operations time, for example, when the coloured fluorescent tube representing three primary colors (blue, red and green) is respectively opened simultaneously, just white light can be produced, when to open as red and blue coloured fluorescent tube and when closing green coloured fluorescent tube, just can produce purple light, therefore can use the light that the work period adjusting different coloured fluorescent tube produces particular color.
Please refer to shown in Fig. 5, the lighting device applying power reforming method of the present invention includes at least two fluorescent tubes (50), a rectifier (51), at least two drivers (52) and a controller (53).
Wherein this fluorescent tube (50) is a CCFL, an EEFL, a CNL fluorescent tube, a LED lamp tube or an OLED fluorescent tube.
This rectifier (51) is linked to an external ac power source (power supply of such as household socket), and be a pulsed dc voltage by an ac voltage rectifier.
This driver (52) drives corresponding fluorescent tube (50) and provides this fluorescent tube (50) required electric current, this driver (52) can according to its required fluorescent tube (50) type of driving difference to some extent, such as, the driver of LED lamp tube can be certain current device.
This controller (53) connects this rectifier (51) and this driver (52), and produce at least two pwm signals synchronous with this pulsed dc voltage, this pwm signal can control this driver (52) and opens or close a period of time, this controller (53) can by a phase-locked loop (phase locked loop, hereinafter referred to as PLL) circuit (531) and a work period selector (532) form or be made up of a PLL circuit (531) and other combinational circuits that can produce pwm signal.
This pwm signal has at least one opening time and at least one shut-in time, this shut-in time be selected from the work period be 10% to 90% interval in any point.
This PLL circuit (531) is connected to this rectifier (51), is the frequency and voltage value of this pulsed dc voltage of sensing, and produce the clock signal of one and this pulsed dc voltage PGC demodulation.
This work period selector (532) is connected to this PLL circuit (531) and this driver (52), the clock signal produced by this PLL circuit (531) can be received, and produce at least two pwm signals with this clock signal synchronization, open with correspondence or close this driver (52).
Therefore, set by this pwm signal work period can use the clock signal of frequency multiplication produced according to the alternating voltage produced by this PLL circuit (531) correspondence and combine to the addition carrying out logicality and carry out cutting computing, for example, if the frequency of a pwm signal is the octuple (i.e. 480Hz) of this pulsed dc voltage frequency, it is 12.5 that this work period selector (532) can produce percentage, 25, 37.5, 50, 67.5, 75, the work period (because (60/480) × 100%=12.5%) of 87.5 and 100, in this, this controller (53) can put the time that setting is opened or closed this driver (52) at any time.
All Drives (52) can be closed position by this controller (53) near the waveform of this pulsed dc voltage is positioned at 0 and 180 degree, during position, All Drives (52) is opened near waveform is positioned at 90 and 270 degree, or the angle in other opens at least one driver (52), can adjust by this and make it more meet the waveform of this pulsed dc voltage by the electric current of this lighting device, reach the effect improving power factor.
In addition, this controller (53) can control the opening time ratio of each driver (52) respectively, with the power reducing fluorescent tube out of the ordinary and the heat produced.This controller (53) also can cut out this fluorescent tube (50) at its waveform of this pulsed dc voltage near 0 and 180 degree during position, open each fluorescent tube (50) more one by one, allow current waveform can the waveform of more this pulsed dc voltage of convergence, to improve power factor.
Please refer to shown in Fig. 5 and Fig. 9, in one embodiment, lighting apparatus of the present invention separately can include a modified form controller (54), this PLL circuit (531) can be improved before PGC demodulation, the pwm signal that this work period selector (532) produces possibly cannot set the problem of suitable work period accurately, in the present embodiment, this PLL circuit (531) is connected to this modified form controller (54), this modified form controller (54) includes a voltage detection unit (541), one memory cell (542) and a counting unit (543).
This voltage detection unit (541), be linked to this rectifier (51), this voltage detection unit (541) produces a clock signal to this PLL circuit (531), using the reference signal (reference signal) as this PLL circuit (531) according to this pulsed dc voltage correspondence.
This memory cell (542) stores the timetable of opening or closing this driver (52), this timetable includes a plurality of opening and closing time, and to should cycle time of pulsed dc voltage, wherein, this memory cell (542) is a read-only memory.
This counting unit (543) is linked to this driver (52), this PLL circuit (531), this voltage detection unit (541) and this memory cell (542).This counting unit (543) sequentially reads the timetable being stored in this memory cell (542), this memory cell (542) correspondence is made to produce at least two pwm signals, open or the shut-in time to control this driver (52), and according to this voltage detection unit (541), when this pulsed dc voltage be 0 degree or 180 degree time, again the timetable in this memory cell (542) is read, to reset this at least two pwm signal.
Please refer to shown in Fig. 6 and Fig. 7, illustrate that lighting apparatus of the present invention includes three groups of WLED lamp bundles (55), these WLED lamp bundles (55) have the not identical work period all separately, and after modulation current waveform, really reach and improve power factor, in addition because the opening time shortens, also reach preferably radiating effect.
Please refer to shown in Fig. 5, the fluorescent tube (50) that this driver (52) has different colours or colour temperature opened or cut out respectively by this controller (53), use the work period that adjustment has each fluorescent tube (50) of different colours or colour temperature, reach specific light color or colour temperature.
This lighting device more includes an environment sensor and a receiver, this environment sensor is connected to this controller (53), the environmental information of local can be sensed, and have a feedback loop with the work period of asking this controller (53) automatically to adjust indivedual fluorescent tube (50), the environmental information of this local includes incident light source, sound or temperature; This receiver is connected to this controller (53), the wireless signal transmitted by an external control unit outside can be accepted, to carry out far-end control for this controller (53) and to adjust the work period of each fluorescent tube (50), this wireless signal is a radio frequency (radio frequency, RF) signal or infrared ray (infrared, an IR) signal.
In addition, above-mentioned at least two fluorescent tubes (50) also can be a spiral CCFL, its etc. be crisscross arranged on a lamp socket, this lamp socket is an Edison base being linked to a power supply, and this rectifier (51), this at least two driver (52) and this controller (53) then more further can be integrated into the electronic module that is arranged at this lamp socket.
Embodiment four
Please refer to shown in Fig. 8, that another embodiment by lighting device of the present invention is described, the present embodiment includes a spiral helicine CCFL (80) and one and CCFL (80) in-parallel to be staggered and to be spiral helicine 2nd CCFL (81), when the colour temperature of a CCFL (80) is 6000K, and the colour temperature of the 2nd CCFL (81) is when being 3000K, if the colour temperature of this leggy lighting device, when being respectively 50%, just can be adjusted to 4500K by the work period adjusting a CCFL (80) and the 2nd CCFL (81).
Use the suitable setting work period in addition, can regulate by the current waveform of this lighting device and the waveform of this pulsed dc voltage consistent, to reach bring to power factor and to complete the object of colour mixture.
Claims (9)
1. a lighting device, includes:
At least two fluorescent tubes;
One rectifier is connected with an external ac power source, is be a pulsed dc voltage by an ac voltage rectifier;
At least two drivers are that correspondence is connected to this at least two fluorescent tube, are to provide the electric current of this at least two fluorescent tube running; And
One controller, connect this rectifier and this driver, produce a pulse width modulation pwm signal synchronous with this pulsed dc voltage, to open or to close this driver a period of time, this controller includes a phase-locked loop PLL circuit, it is connected to this rectifier, and this phase-locked loop PLL circuit senses the frequency and voltage value of this pulsed dc voltage, and produces the clock signal of one and pulsed dc voltage PGC demodulation according to this pulsed dc voltage;
It is characterized in that, this controller includes:
One voltage detection unit is linked to this rectifier, and this voltage detection unit produces a clock signal to this phase-locked loop PLL circuit, using the reference signal reference signal as this phase-locked loop PLL circuit according to this pulsed dc voltage correspondence;
One memory cell, store and open or close the timetable of this driver, this timetable includes a plurality of opening and closing time point, and to should cycle time of pulsed dc voltage; And
One counting unit, be linked to this driver, this phase-locked loop PLL circuit, this voltage detection unit and this memory cell, it sequentially reads the timetable being stored in this memory cell, this memory cell correspondence is made to produce at least two pwm signals, to control the time that this driver is opened or closed, and according to this voltage detection unit, when this pulsed dc voltage be 0 degree or 180 degree time, again the timetable in this memory cell is read, to reset this at least two pwm signal.
2. lighting device as claimed in claim 1, it is characterized in that, this fluorescent tube is a cold cathode ray tube, an outer electrode fluorescent lamp, a nano-sized carbon fluorescent tube, a light-emitting diode lamp tube or an organic light emitting diode lamp pipe.
3. lighting device as claimed in claim 1, it is characterized in that, this pwm signal has at least one opening time and at least one shut-in time, and this opening time and this shut-in time are the percentage corresponding to the work period.
4. lighting device as claimed in claim 1, it is characterized in that, this controller also includes:
One work period selector, be connected to this phase-locked loop PLL circuit and this driver, it receives the clock signal and at least two pwm signals of generation and this clock signal synchronization that are produced by this phase-locked loop PLL circuit, this pwm signal is opened or is closed this driver, and cutting is carried out in the addition combination that the alternating voltage that wherein the work period foundation of this pwm signal is produced by this phase-locked loop PLL circuit carries out logicality.
5. lighting device as claimed in claim 1, it is characterized in that, this controller be open All Drives when this pulsed dc voltage is position near 0 and 180 degree, the closedown All Drives or open at least one driver in arbitrary angle position at waveform position when waveform position is position near 90 and 270 degree.
6. lighting device as claimed in claim 1, it is characterized in that, this fluorescent tube has different colours or colour temperature.
7. lighting device as claimed in claim 1, it is characterized in that, this lighting device more includes an environment sensor, is be connected to this controller, the environmental information of sensing local, and there is a feedback loop with the work period of asking this controller automatically to adjust indivedual fluorescent tube.
8. lighting device as claimed in claim 1, it is characterized in that, this lighting device more includes a receiver, is be connected to this controller, accept the wireless signal transmitted by an external control unit, to carry out far-end control for this controller and to adjust the work period of each fluorescent tube.
9. lighting device as claimed in claim 1, it is characterized in that, this controller is before this phase-locked loop PLL circuit PGC demodulation, this at least two pwm signal is exported according to a pre-defined rule, another after this phase-locked loop PLL circuit PGC demodulation, this at least two pwm signal is exported, with to the driver should opening or close this lighting device according to a pre-defined rule.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US21933709P | 2009-06-22 | 2009-06-22 | |
| US61/219,337 | 2009-06-22 | ||
| US22058209P | 2009-06-26 | 2009-06-26 | |
| US61/220,582 | 2009-06-26 | ||
| US23675709P | 2009-08-25 | 2009-08-25 | |
| US61/236,757 | 2009-08-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101932172A CN101932172A (en) | 2010-12-29 |
| CN101932172B true CN101932172B (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010210031.1A Expired - Fee Related CN101932172B (en) | 2009-06-22 | 2010-06-22 | Lighting device |
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|---|---|
| JP (1) | JP2011019389A (en) |
| CN (1) | CN101932172B (en) |
| TW (1) | TW201101930A (en) |
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| US20130169165A1 (en) * | 2011-12-15 | 2013-07-04 | Laurence P. Sadwick | Multi-Phase Lighting Driver |
| WO2015193071A1 (en) * | 2014-06-17 | 2015-12-23 | Koninklijke Philips N.V. | Led lamp device having two or more light strings |
| JP7037036B2 (en) * | 2017-09-22 | 2022-03-16 | 日亜化学工業株式会社 | Light emitting diode drive device and lighting for plant cultivation using it |
| JP6959273B2 (en) * | 2019-01-31 | 2021-11-02 | 矢崎総業株式会社 | Control device, lighting device, and control device program |
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| CN1658506A (en) * | 2004-02-18 | 2005-08-24 | 上海乐金广电电子有限公司 | Phase-locked loop signal generating device of commutator |
| US7378805B2 (en) * | 2005-03-22 | 2008-05-27 | Fairchild Semiconductor Corporation | Single-stage digital power converter for driving LEDs |
| US7317288B2 (en) * | 2005-09-02 | 2008-01-08 | Au Optronics Corporation | Controlling method and system for LED-based backlighting source |
| KR100679410B1 (en) * | 2006-04-04 | 2007-02-06 | 엘지.필립스 엘시디 주식회사 | Device for driving light emitting diode |
| US8134253B2 (en) * | 2007-02-21 | 2012-03-13 | Sharp Kabushiki Kaisha | Load driving circuit, integrated circuit, DC-DC converter, and load driving method |
| KR101282997B1 (en) * | 2007-10-11 | 2013-07-05 | 엘지디스플레이 주식회사 | Liquid crystal display device and backlight driving method thereof |
| US8248825B2 (en) * | 2007-11-26 | 2012-08-21 | IP Vision Holding B.V. | Power factor control circuit and mains power supply |
-
2010
- 2010-06-21 JP JP2010140397A patent/JP2011019389A/en active Pending
- 2010-06-21 TW TW99120120A patent/TW201101930A/en unknown
- 2010-06-22 CN CN201010210031.1A patent/CN101932172B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101932172A (en) | 2010-12-29 |
| JP2011019389A (en) | 2011-01-27 |
| TW201101930A (en) | 2011-01-01 |
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