CN102032458A - Light-emitting device and light-emitting method thereof - Google Patents
Light-emitting device and light-emitting method thereof Download PDFInfo
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- CN102032458A CN102032458A CN2009101772323A CN200910177232A CN102032458A CN 102032458 A CN102032458 A CN 102032458A CN 2009101772323 A CN2009101772323 A CN 2009101772323A CN 200910177232 A CN200910177232 A CN 200910177232A CN 102032458 A CN102032458 A CN 102032458A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The invention relates to a light-emitting device and a light-emitting method thereof. The light-emitting device receives an adjusted alternating current power supply as an input power supply. The embodiment of the light-emitting device comprises a light-emitting diode (LED) array and a drive circuit, wherein the LED array is formed by parallel connection of at least one light-emitting group; the drive circuit is provided with a plurality of outputs corresponding to the light-emitting groups; each output has a default so as to control the luminance of the corresponding light-emitting group; and each light-emitting group in the LED array automatically and sequentially conducts for fixed time according to the output of the drive circuit and the amplitude of the alternating current power supply and ends according to the default of the drive circuit.
Description
Technical field
The present invention relates to a kind of light-emitting device and luminescent method thereof, particularly a kind of the reception once the AC power of regulating or a direct current power supply with device and luminescent method thereof as the input power supply of this light-emitting device.
Background technology
Light emitting diode because have low power consumption, high brightness, volume is little and advantage such as long service life, has now become the main flow of lighting source of new generation.In the application of many light-emitting diode assemblies, the power supply supply is provided with in order to from AC power, for example 110V, 60Hz, and the VD after providing to regulate is to supply with this device.Fig. 1 illustrates one typically in conjunction with the configuration diagram of direct current to the power supply supply 10 of direct current transducer or switching type voltage stabilizer.With reference to Fig. 1, this power supply supply 10 receives AC power input after by bridge rectifier 12 and capacitor C
FilterFiltering, use provide one without the DC voltage of rectification as the input voltage V of direct current to direct current transducer 14
InThis direct current is a consequent converter (forward converter) in this example to direct current transducer 14, in order to carry out the function of step-down.This converter 14 comprises a transformer 142, diode D1 and D2, inductance L and capacitor C.This converter 14 also can comprise an isolated component 144 to send the error signal V from error amplifier 146
ErrorTo modulator 148.
Because direct current is to the switching characteristic of direct current transducer, above-mentioned converter can extract electric current in the pulse wave mode from the voltage source, and then produces some unwelcome effects, for example reduces power factor.In order to reach the maximization from the AC power power efficiency, the input current that extracts from this AC power finally should have sinusoidal waveform ideally and should keep same-phase with AC power.This situation is called single power factor (unity power factor), and it results under the situation of pure load usually.Yet its power factor of device that above-mentioned direct current can cause Fig. 1 to the pulse wave current draw of the switching characteristic of direct current transducer and generation is less than single power factor, and therefore do not have optimum power efficiency.In addition, be positioned at bridge rectifier 12 and direct current capacitor C among Fig. 1 to 14 of direct current transducers
FilterCan make that the total impedance on the bridge rectifier 12 is a non-pure resistance, its power factor that further decayed.
Taiwan bulletin patent case I220047 discloses a kind of LED driving circuit, and it can directly drive light emitting diode by the forward part voltage of supplying power supply under the design of no filter capacitor.Fig. 2 illustrates the configuration diagram of this LED driving circuit.With reference to Fig. 2, this drive circuit comprises a supply power supply V
S, a bridge rectifier 22, is by a plurality of current control unit I
1-I
nThe conduct current control circuit of being formed 24, and be used for detecting supply power supply V
SThe voltage detection circuit 20 of voltage.When this voltage detection circuit 20 detects alternating voltage greater than diode D
1Conducting voltage the time, current control unit I
1Conducting is to light this diode D
1Then, detect alternating voltage greater than diode D when this voltage detection circuit 20
1And D
2Conducting voltage the time, current control unit I
1End and another current control unit I
2Conducting is to light this diode D
1And D
2In this framework, because light emitting diode D
1-D
nThe conducting that can repeat on different current paths, therefore if when realizing brilliance control with the dimming mode of pulse width modulation, the design of conduct current control circuit 24 will be very complicated, and D
1-D
nCan't have identical brightness.
In order to reach from the maximization of the power efficiency of AC power and an even and adjustable illuminating source to be provided, be necessary to propose a kind of light-emitting device and conducting method thereof to meet the demand in market.
Summary of the invention
The purpose of this invention is to provide a kind of light-emitting device.Light-emitting device of the present invention receives once the AC power of regulating to import power supply as one.One embodiment of this light-emitting device comprises a light emitting diode array and an one drive circuit.This light emitting diode array is made up of a plurality of luminous group of institutes in parallel, and this drive circuit has a plurality of described luminous group outputs that correspond to, and each of described output has a default value to control luminous group brightness of correspondence.Luminous group of in this light emitting diode array each according to the amplitude of the output of this drive circuit and this AC power and automatically and conducting in order and is ended according to this default value of this drive circuit.
Another object of the present invention provides a kind of light-emitting device.Light-emitting device of the present invention receives a direct current power supply to import power supply as one.One embodiment of this light-emitting device comprises a light emitting diode array and an one drive circuit.This light emitting diode array is made up of a plurality of luminous group of institutes in parallel, and this drive circuit has a plurality of described luminous group outputs that correspond to, and uses luminous group corresponding brightness of control.The luminous group selection of in this light emitting diode array each ground is based on the output of this drive circuit and conducting, and end according to a default value of the output of this drive circuit, and described luminous group set-up mode is to be incremented to luminous group with maximum series connection light emitting diode numbers in regular turn by luminous group with minimum series connection light emitting diode number, perhaps is decremented to luminous group with minimum series connection light emitting diode number in regular turn by luminous group with maximum series connection light emitting diode numbers.
Another purpose of the present invention provides a kind of method of sequentiality conducting one light emitting diode array, and wherein this light emitting diode array receives an AC power of regulating to be made up of a plurality of luminous group of parallel connections as an input power supply and this light emitting diode array.Method comprises following steps according to an embodiment of the invention: provide one first luminous group one first to drive signal; According to this first luminous group of the first amplitude conducting of this AC power; When this electric current of first luminous group reaches one first default value, by this electric current of first luminous group; Provide one second luminous group one second to drive signal; According to this second luminous group of the second amplitude conducting of this AC power; And when this electric current of second luminous group reaches one second default value, by this electric current of second luminous group.In the present embodiment, when this first amplitude during less than this second amplitude, the light emitting diode number of connecting in this first luminous group is less than the light emitting diode number of connecting in this second luminous group, and when this first amplitude during greater than this second amplitude, the light emitting diode number of connecting in this first luminous group is greater than the light emitting diode number of connecting in this second luminous group.
Another purpose of the present invention provides a kind of method of sequentiality conducting one light emitting diode array, and wherein this light emitting diode array receives a direct current power supply to be made up of a plurality of luminous group of parallel connections as an input power supply and this light emitting diode array.Method comprises following steps according to an embodiment of the invention: according to one first luminous group of an activation signal conduction; When this electric current of first luminous group reaches one first default value, by this electric current of first luminous group; According to one second luminous group of one first clock signal conducting; When this electric current of second luminous group reaches one second default value, by this electric current of second luminous group; And according to the 3rd luminous group of one second clock signal conducting 1.In the present embodiment, this first, second and the 3rd luminous group in the light emitting diode number of connecting for increasing progressively in regular turn or successively decreasing in regular turn.
Description of drawings
Fig. 1 illustrates one typically in conjunction with direct current its configuration diagram of an example to the power supply supply of direct current transducer or switching type voltage stabilizer;
Fig. 2 illustrates the configuration diagram of this LED driving circuit;
Fig. 3 shows the configuration diagram that merges the light-emitting device of power supply device in conjunction with one of one embodiment of the invention;
Fig. 4 shows the flow chart of the method for sequentiality conducting one light emitting diode array according to an embodiment of the invention;
Fig. 5 illustrates this light emitting diode array based on this AC power V
AC, regConduction status;
Fig. 6 shows the set-up mode in conjunction with the light emitting diode array of another embodiment of the present invention;
Fig. 7 shows the set-up mode of the luminous row in this light emitting diode array;
Fig. 8 shows the set-up mode of the luminous row in this light emitting diode array;
Fig. 9 shows luminous group set-up mode in conjunction with another embodiment of the present invention;
Figure 10 illustrates a light emitting diode array based on this AC power V
AC, regConduction status;
Figure 11 shows the configuration diagram in conjunction with the light-emitting device of one embodiment of the invention; With
Figure 12 shows the flow chart of the method for sequentiality conducting one light emitting diode array according to an embodiment of the invention.
[main element symbol description]
10 power supply supplies
12 bridge rectifiers
14 direct currents are to direct current transducer
142 transformers
144 isolated components
146 error amplifiers
148 modulators
C
Filter, the C capacitor
D
1～D
2Diode
The L inductance
R
2～R
3Resistance
20 voltage detection circuits
22 bridge rectifiers
24 conduct current control circuits
I
1～I
nCurrent control unit
D
1～D
nLight emitting diode
30 power supply devices
302 rectification circuits
32 light-emitting devices
322 light emitting diode arrays
324 drive circuits
326～330 luminous row
332 synchronous tracing units
C
1～C
2Capacitor
R
1～R
2Resistance
91～93 luminous groups
99 light emitting diode arrays
100 light-emitting devices
102 light emitting diode arrays
104 drive circuits
106～108 luminous row
R
1～R
2Resistance
C
2Capacitor
S40～S49 step
S110～S118 step
The specific embodiment
Fig. 3 shows the configuration diagram that merges the light-emitting device 32 of power supply device 30 in conjunction with one of one embodiment of the invention.This light-emitting device 32 receives the AC power V that regulated from one of this power supply device 30
AC, regWith as the input power supply.This power supply device 30 comprises one in order to receive the rectification circuit 302 of AC power input.This rectification circuit 302 can be a full-wave rectifying circuit or a half-wave rectification circuit, for should light-emitting device 32 1 forward voltages.This power supply device 30 also can comprise a capacitor C who is connected in this rectification circuit 302
1, the high-frequency noise part that it is only imported in order to this AC power of filtering.
With reference to Fig. 3, this light-emitting device 32 comprises a light emitting diode array 322 and one drive circuit 324.In one embodiment, this light emitting diode array 322 is by a plurality of luminous row 326,328 and 330 in parallel and form, and each luminous row 326,328 and 330 are made up of at least one light emitting diode series connection institute.This drive circuit 324 has a plurality of output OUT that correspond to described luminous row
0, OUT
1To OUT
n, and output OUT
0, OUT
1To OUT
nHas a default value individually to control corresponding luminous row 326,328 and 330 brightness.In one embodiment, this default value is a fixedly ON time of a fixed current value and, and changes the brightness that this current value and this ON time can be adjusted described luminous row.
With reference to Fig. 3, in one embodiment, the power end V of this drive circuit 324
DDFrom this AC power V
AC, regA dividing potential drop and filter circuit.This dividing potential drop and filter circuit comprise resistance R
1, R
2And C
2Perhaps, the power end V of this drive circuit 324
DDCan be from a cell apparatus.In addition, each the luminous row in this light emitting diode array 322 also can comprise one and are connected in this AC power V
AC, regAnd the resistance between this drive circuit 324.This resistance is in order to protect the normal operation of luminous row, for example, and in order to current limliting or overvoltage protection.In another embodiment of the present invention, each the luminous row in this light emitting diode array 322 comprise one and are connected in this AC power V
AC, regAnd the switch element between this drive circuit 324.This switch element is in order to realize brightness adjustment control or execute protection function when the drive circuit 324 undesired runnings.
Fig. 4 shows the flow chart of the method for sequentiality conducting one light emitting diode array according to an embodiment of the invention, and wherein this light emitting diode array receives an AC power of regulating to import power supply as one.In step S40, provide one first luminous group one first to drive signal; In step S42, according to this first luminous group of the first amplitude conducting of this AC power; In step S44, when this electric current of first luminous group reaches one first default value, by this electric current of first luminous group; In step S46, provide one second luminous group one second to drive signal; In step S48, according to this second luminous group of the second amplitude conducting of this AC power; In step S49, when this electric current of second luminous group reaches one second default value, by this electric current of second luminous group; Wherein, when this first amplitude during less than this second amplitude, the light emitting diode number of connecting in this first luminous group is less than the light emitting diode number of connecting in this second luminous group, and when this first amplitude during greater than this second amplitude, the light emitting diode number of connecting in this first luminous group is greater than the light emitting diode number of connecting in this second luminous group.Below cooperate Fig. 3 that the details of the method for sequentiality conducting one light emitting diode array of the present invention is described.
At first, an AC power V who regulated
AC, regSetting is in order to provide the power supply supply of a light emitting diode array 322, this AC power V
AC, regRegulative mode can or be a half-wave rectification for a full-wave rectification.Then, along with this AC power V
AC, regThe amplitude and the output OUT of this drive circuit 324
0, OUT
1To OUT
nBoot sequence, described luminous row 326,328 and 330 can be switched in regular turn.Fig. 5 illustrates this light emitting diode array 322 based on this AC power V
AC, regConduction status.At first, as t＜t
1The time, the output OUT of this drive circuit 324
0Be enabled, represent these first luminous row 326 to be switched on.Then, work as t=t
1The time, this AC power V
AC, regAmplitude greater than the pressure drop of light emitting diode in the first luminous row 326 and the output OUT of this drive circuit 324
0To the pressure drop between Gnd, so these first luminous row 326 now are switched on and diode is lighted.Then, the electric current when these first luminous row 326 reaches output OUT
0Default value the time, that is the electric current of these first luminous row 326 reaches this fixed current value and should be fixedly during ON time, ends the electric current of these first luminous row 326.At this moment, the output OUT of this drive circuit 324
1Be enabled, represent these second luminous row 328 to be switched on.
Work as t=t
2The time, this AC power V
AC, regAmplitude greater than the pressure drop of the light emitting diode of connecting in the second luminous row and the output OUT of this drive circuit 324
1To the pressure drop between Gnd, so these second luminous row 328 now are switched on and diode is lighted.When the electric current of these second luminous row 328 reaches output OUT
1Default value the time, by the electric current of these second luminous row 328.Similarly, work as t=t
3To t
6The time, this light emitting diode array 322 is along with this AC power V
AC, regAmplitude, the output OUT of this drive circuit 324
0, OUT
1To OUT
nEnabled status and its default value be switched in regular turn and end.Because the detecting current mechanism of drive circuit 324 inside, each only single luminous row or only very the luminous row of minority be switched on, so can significantly reduce the overall power dissipation of light-emitting device.In addition, when the AC power operating frequency of input when being 60Hz, represent each luminous row to be lighted in regular turn with the frequency of per second 120 times.Because the persistence of vision phenomenon of human eye, the CCFL fluorescent tube performance that its visual effect of disclosed method and apparatus will be more traditional is more excellent.
In addition, in an embodiment of the present invention, this drive circuit 324 comprises a synchronous tracing unit 332, and it is used for following the trail of this AC power V
AC, regAmplitude and cycle, use and adjust its output OUT
0, OUT
1Boot sequence and operating frequency to OUTn.In one embodiment, first and second conducting states of these synchronous tracing unit 332 these first luminous row 326 of detecting are with this AC power of synchronous tracking V
AC, regCycle, use adjust these drive circuit 324 outputs operating frequency to be synchronized with this AC power V
AC, regIn another embodiment, a voltage drop of these synchronous tracing unit 332 these first luminous row 326 of detecting is to follow the trail of this AC power V
AC, regAmplitude, use the boot sequence of adjusting these drive circuit 324 outputs.
The set-up mode of above-mentioned light emitting diode array is in an embodiment of the present invention by a plurality of luminous row 326,328 shown in Figure 3 and 330 in parallel and form.Yet the set-up mode of this light emitting diode array can be based on teaching of the present invention and announcement and is done all replacement and modifications that does not deviate from spirit of the present invention.Fig. 6 shows the set-up mode in conjunction with the light emitting diode array of another embodiment of the present invention.Light emitting diode array 322 in Fig. 5, its luminous row 326,328 and 330 are according to AC power V
AC, regAmplitude and arrange to form the pattern structure of approximate this amplitude, its set-up mode of luminous row in the light emitting diode array shown in Figure 6 is to be incremented to the luminous row with maximum series connection light emitting diode numbers by the luminous leu preface with minimum series connection light emitting diode number, and the whole square chart spline structure that forms of this light emitting diode array.In another embodiment of the present invention, its set-up mode of luminous row in this light emitting diode array can be decremented to the luminous row with minimum series connection light emitting diode number by the luminous leu preface with maximum series connection light emitting diode numbers.
In addition, in further embodiment of this invention, the set-up mode of the luminous row in this light emitting diode array can be incremented to the luminous row with maximum series connection light emitting diode numbers by the luminous leu preface with minimum series connection light emitting diode number, to form a triangular graph spline structure, as shown in Figure 7.Perhaps, the set-up mode of the luminous row in this light emitting diode array can be decremented to the luminous row with minimum series connection light emitting diode number by the luminous leu preface with maximum series connection light emitting diode numbers, to form a triangular graph spline structure, as shown in Figure 8.Fig. 7 and Fig. 8 also indicate the conducting order of the luminous row in this light emitting diode array.
With reference to Fig. 3, aforementioned luminous group set-up mode is connected to form single luminous row by at least one light emitting diode in Fig. 3.Yet this set-up mode of luminous group can be based on teaching of the present invention and announcement and is done all replacement and modifications that does not deviate from spirit of the present invention.Fig. 9 shows luminous group set-up mode in conjunction with another embodiment of the present invention.Among Fig. 9 luminous group 91 is made up of single luminous row, and luminous group 92 is made up of two luminous row institute in parallel, each in these two luminous row by three light emitting diodes series connection formed.That is luminous group set-up mode can form to several luminous row by in parallel one, and this luminous row by the light emitting diode of the different numbers of connecting to form.
In addition, luminous group in this light emitting diode array is except can be at this AC power V
AC, regWhole forward voltage scopes in conducting, also can be in this AC power V
AC, regPart forward voltage scope in conducting.Figure 10 illustrates a light emitting diode array 99 based on this AC power V
AC, regConduction status.Luminous group of its conducting scope of in this light emitting diode array 99 each only limits to this AC power V
AC, regThe part forward voltage.
Light-emitting device 32 among Fig. 3 receives the AC power V that regulated from one of power supply device 30
AC, regTo import power supply as one.Yet this light-emitting device 32 also can receive a direct current power supply to import power supply as one.Figure 11 shows the configuration diagram in conjunction with the light-emitting device 100 of one embodiment of the invention.This light-emitting device 100 receives from a battery, a linear voltage regulator or the direct current direct current power supply V to direct current transducer
DCTo import power supply as one.With reference to Figure 11, this light-emitting device 100 comprises a light emitting diode array 102 and one drive circuit 104.The set-up mode of this light emitting diode array 102 can adopt Fig. 5 to pattern structure shown in Figure 8.
Figure 12 shows the flow chart of the method for sequentiality conducting one light emitting diode array according to an embodiment of the invention, and wherein this light emitting diode array receives a direct current power supply to import power supply as one.In step S110, according to one first luminous group of an activation signal conduction; In step S112, when this electric current of first luminous group reaches one first default value, by this electric current of first luminous group; In step S114, according to one second luminous group of one first clock signal conducting; In step S116, when this electric current of second luminous group reaches one second default value, by this electric current of second luminous group; In step S118, according to the 3rd luminous group of one second clock signal conducting 1; Wherein, this first, second and the 3rd luminous group in the light emitting diode number of connecting for increasing progressively in regular turn or successively decreasing in regular turn.Below cooperate Figure 11 that the details of the method for sequentiality conducting one light emitting diode array of the present invention is described.
At first, light emitting diode array 102 receives direct current power supply V
DCTo import power supply as one.Then, the enable signal EN and the frequency signal OUT that are exported by this drive circuit 104 of luminous row 106,107 in this light emitting diode array 102 and 108 conducting order
1-OUT
nDetermine, but not by this direct current power supply V
DCAmplitude determine.When the electric current of described luminous row reaches a default value, the fixing ON time of a fixed current value and for example, then the electric current of described luminous row will be cut off.
In the above-described embodiments, the brightness of adjusting luminous row in this light emitting diode array 102 or luminous group is reached by changing this fixed current value or changing fixedly ON time.Yet, in order further to reduce the power attenuation of light-emitting device, when this light emitting diode array 102 was carried out light modulation, these luminous row or luminous group can keep a fixing ON time, and only change the size of drive current, use the effect that reaches light modulation or RGB three color contamination light.
Technology contents of the present invention and technical characterstic disclose as above, yet those skilled in the art still may be based on teaching of the present invention and announcements and done all replacement and modifications that does not deviate from spirit of the present invention.Therefore, protection scope of the present invention should be not limited to that embodiment discloses, and should comprise various do not deviate from replacement of the present invention and modifications, and is contained by claims.
Claims (30)
1. light-emitting device, it receives once the AC power of regulating with as an input power supply, comprises:
One light emitting diode array, it is made up of a plurality of luminous group of institutes in parallel; And
One drive circuit, it has and a plurality ofly corresponds to described luminous group output, and each of described output has a default value to control luminous group corresponding brightness;
Wherein, luminous group of each in this light emitting diode array is according to the amplitude of the output of this drive circuit and this AC power and conducting in order, and ends according to this default value of this drive circuit.
2. light-emitting device according to claim 1, wherein this set-up mode of luminous group is made up of one to three luminous row institute in parallel, and in this luminous row each by a plurality of light emitting diodes connect formed.
3. light-emitting device according to claim 2, wherein the pressure drop of the light emitting diode of connecting in luminous group greater than this when the amplitude of the output enable of this drive circuit correspondence and this AC power and this drive circuit export pressure drop between a reference voltage to the time, this luminous group begins conducting.
4. light-emitting device according to claim 1, wherein this default value is a fixedly ON time of a fixed current value and.
5. light-emitting device according to claim 2, wherein each luminous group the conducting scope in this light emitting diode array only limits to the part forward voltage of this AC power.
6. light-emitting device according to claim 2, wherein the set-up mode of this light emitting diode array is to be incremented to luminous group with maximum series connection light emitting diode numbers in regular turn by luminous group with minimum series connection light emitting diode number.
7. light-emitting device according to claim 2, wherein the set-up mode of this light emitting diode array is to be decremented to luminous group with minimum series connection light emitting diode number in regular turn by luminous group with maximum series connection light emitting diode numbers.
8. light-emitting device according to claim 2, wherein the pattern structure of this light emitting diode array is that the pattern structure of a square chart spline structure, a triangular graph spline structure, an approximate string ripple maybe can be any geometric pattern structure.
9. light-emitting device according to claim 2, wherein this luminous group more comprises a resistance or a switch that is connected between this AC power and this drive circuit.
10. light-emitting device according to claim 1, wherein this drive circuit is adjusted the frequency of its described output by a synchronous tracing unit.
11. light-emitting device according to claim 1, wherein. this drive circuit is adjusted the order of its described output by this synchronous tracing unit.
12. light-emitting device according to claim 1, wherein this default value has a fixing ON time, and the size of current of this default value is used described luminous group of light modulation and mixed light for adjusting.
13. a light-emitting device, its receive a direct current power supply with as one the input power supply, comprise:
One light emitting diode array, it is made up of a plurality of luminous group of institutes in parallel; And
One drive circuit, it has a plurality of described luminous group outputs that correspond to, and uses luminous group corresponding brightness of control;
Wherein, the luminous group selection of in this light emitting diode array each ground is according to the output of this drive circuit and conducting, and end according to a default value of the output of this drive circuit, and described luminous group set-up mode is to be incremented to luminous group with maximum series connection light emitting diode numbers in regular turn by luminous group with minimum series connection light emitting diode number, perhaps is decremented to luminous group with minimum series connection light emitting diode number in regular turn by luminous group with maximum series connection light emitting diode numbers.
14. light-emitting device according to claim 13, wherein this set-up mode of luminous group is made up of one to three luminous row institute in parallel, and these at least one luminous row each by a plurality of light emitting diodes series connection formed.
15. light-emitting device according to claim 14, wherein this luminous group based on an activation signal of this drive circuit or a clock signal and conducting.
16. light-emitting device according to claim 13, wherein this default value is a fixedly ON time of a fixed current value and.
17. light-emitting device according to claim 13, wherein the pattern structure of this light emitting diode array is that the pattern structure of a square chart spline structure, a triangular graph spline structure, an approximate string ripple maybe can be any geometric pattern structure.
18. light-emitting device according to claim 13, wherein this luminous group more comprises a resistance or a switch that is connected between this AC power and this drive circuit.
19. light-emitting device according to claim 13, wherein this default value has a fixing ON time, and the size of current of this default value is used described luminous group of light modulation and mixed light for adjusting.
20. luminescent method, it is via sequentiality conducting one light emitting diode array, this light emitting diode array receives an AC power of regulating importing power supply as one, and this light emitting diode array is made up of a plurality of luminous group of parallel connections, and the method includes the steps of:
Provide one first luminous group one first to drive signal;
According to this first luminous group of the first amplitude conducting of this AC power;
When this electric current of first luminous group reaches one first default value, by this electric current of first luminous group;
Provide one second luminous group one second to drive signal;
According to this second luminous group of the second amplitude conducting of this AC power; And
When this electric current of second luminous group reaches one second default value, by this electric current of second luminous group;
Wherein, when this first amplitude during less than this second amplitude, the light emitting diode number of connecting in this first luminous group is less than the light emitting diode number of connecting in this second luminous group, and when this first amplitude during greater than this second amplitude, the light emitting diode number of connecting in this first luminous group is greater than the light emitting diode number of connecting in this second luminous group.
21. luminescent method according to claim 20, wherein this first and second to drive signal be one to have the fixedly signal of ON time of fixed current value and.
22. luminescent method according to claim 20, wherein when this first or second driving signal of this first or second luminous group of received, and first or second amplitude of this AC power greater than the pressure drop of the light emitting diode of connecting in this first or second luminous group and this drive circuit export pressure drop between a reference voltage to the time, this first or second luminous group begins conducting.
23. luminescent method according to claim 21, wherein this first and second default value is that this first and second drives the fixed current value of signal and fixing ON time.
24. luminescent method according to claim 20, wherein these first and second luminous groups only conductings in the part forward voltage scope of this AC power.
25. luminescent method according to claim 20 more comprises and detects the cycle of these first and second conducting states of first luminous group with synchronous this AC power of tracking, uses the step of the operating frequency of adjusting this first and second drivings signal.
26. luminescent method according to claim 20 more comprises and detects the amplitude of this voltage pressure reduction of first luminous group with synchronous this AC power of tracking, uses the step of the boot sequence of adjusting this first and second drivings signal.
27. luminescent method according to claim 23, wherein this first and second drives signal and has a fixing ON time, and size of current of this first and second drivings signal is used described luminous group of light modulation and mixed light for adjusting.
28. luminescent method, it is via sequentiality conducting one light emitting diode array, this light emitting diode array receives a direct current power supply to be made up of a plurality of luminous group of parallel connections as an input power supply and this light emitting diode array, and the method includes the steps of:
According to one first luminous group of an activation signal conduction;
When this electric current of first luminous group reaches one first default value, by this electric current of first luminous group;
According to one second luminous group of one first clock signal conducting;
When this electric current of second luminous group reaches one second default value, by this electric current of second luminous group; And
According to the 3rd luminous group of one second clock signal conducting 1;
Wherein, this first, second and the 3rd luminous group in the light emitting diode number of connecting for increasing progressively in regular turn or successively decreasing in regular turn.
29. luminescent method according to claim 28, wherein this first and second default value is a fixedly ON time of a fixed current value and.
30. luminescent method according to claim 28, wherein this first and second default value has a fixing ON time, and the size of current of this first and second default value is used described luminous group of light modulation and mixed light for adjusting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101772323A CN102032458A (en) | 2009-09-27 | 2009-09-27 | Light-emitting device and light-emitting method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133917A (en) * | 2011-12-01 | 2013-06-05 | 采钰科技股份有限公司 | LED light device |
| CN103167680A (en) * | 2011-12-16 | 2013-06-19 | 晶锜科技股份有限公司 | Luminous device and operation method thereof |
| CN104009621A (en) * | 2013-02-24 | 2014-08-27 | 理察·蓝德立·葛瑞 | Device for improving power efficiency for power factor corrections |
| CN106195722A (en) * | 2015-05-05 | 2016-12-07 | 扬州艾笛森光电有限公司 | The light emitting diode illuminating apparatus of alternating current power supply be can be used directly |
| CN111064458A (en) * | 2019-12-03 | 2020-04-24 | 国网江苏省电力有限公司电力科学研究院 | Direct current cuts device soon |
| CN112664846A (en) * | 2016-01-22 | 2021-04-16 | 嘉兴山蒲照明电器有限公司 | Installation detection device, power module device and LED lamp using same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101208813A (en) * | 2005-06-28 | 2008-06-25 | 首尔Opto仪器股份有限公司 | Light emitting device for AC power operation |
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- 2009-09-27 CN CN2009101772323A patent/CN102032458A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101208813A (en) * | 2005-06-28 | 2008-06-25 | 首尔Opto仪器股份有限公司 | Light emitting device for AC power operation |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133917A (en) * | 2011-12-01 | 2013-06-05 | 采钰科技股份有限公司 | LED light device |
| CN103167680A (en) * | 2011-12-16 | 2013-06-19 | 晶锜科技股份有限公司 | Luminous device and operation method thereof |
| CN104009621A (en) * | 2013-02-24 | 2014-08-27 | 理察·蓝德立·葛瑞 | Device for improving power efficiency for power factor corrections |
| CN106195722A (en) * | 2015-05-05 | 2016-12-07 | 扬州艾笛森光电有限公司 | The light emitting diode illuminating apparatus of alternating current power supply be can be used directly |
| CN112664846A (en) * | 2016-01-22 | 2021-04-16 | 嘉兴山蒲照明电器有限公司 | Installation detection device, power module device and LED lamp using same |
| CN112664846B (en) * | 2016-01-22 | 2023-03-28 | 嘉兴山蒲照明电器有限公司 | Installation detection device, power module device and LED lamp using same |
| CN111064458A (en) * | 2019-12-03 | 2020-04-24 | 国网江苏省电力有限公司电力科学研究院 | Direct current cuts device soon |
| CN111064458B (en) * | 2019-12-03 | 2022-04-12 | 国网江苏省电力有限公司电力科学研究院 | Direct current cuts device soon |
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Application publication date: 20110427 |