CN103716935B - Based on the drive unit of a majority illumination unit of light-emitting diode - Google Patents
Based on the drive unit of a majority illumination unit of light-emitting diode Download PDFInfo
- Publication number
- CN103716935B CN103716935B CN201210371527.6A CN201210371527A CN103716935B CN 103716935 B CN103716935 B CN 103716935B CN 201210371527 A CN201210371527 A CN 201210371527A CN 103716935 B CN103716935 B CN 103716935B
- Authority
- CN
- China
- Prior art keywords
- controller
- mentioned
- light
- emitting diode
- illumination
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention provides one based on the lighting device of light-emitting diode, comprise multiple illumination stage based on light-emitting diode, be connected in series with a current controller.Each illumination stage based on light-emitting diode, comprises at least one illumination unit based on light-emitting diode and connects in a series arrangement.This multiple illumination stage based on light-emitting diode is in parallel with multiple on-off controller again, provides multiple modes of operation under switching the control of voltage compare unit one, to open the LED lighting section of illumination varying number.Each on-off controller is distinctly in parallel with relative LED lighting section, and this switched voltage comparative unit produces a transmission signal, transmits scriptures and controls the plurality of on-off controller.Between the anode that each on-off controller also can be connected to relative LED lighting section and current controller, switched voltage comparative unit produces two transmission signals, transmits scriptures and controls the plurality of on-off controller.
Description
Technical field
The present invention relates to the lighting device based on light-emitting diode, especially one in order to drive the device including the illumination unit based on light-emitting diode of multiple segmentation.
Background technology
Light-emitting diode (LED) is a kind of light source of based semiconductor, is often used in the indicating device of low power consumption instrument and household electrical appliances, and application light-emitting diode is also more and more general at various lighting device.Such as, the light-emitting diode of high brightness is widely used in traffic lights, automobiles indicator lamp and stop lamp.
Current vs voltage (IV) characteristic curve of light-emitting diode is similar to general general-purpose diode, when the voltage being added on light-emitting diode is less than the forward voltage of diode, only has very little electric current to pass through light-emitting diode.When voltage exceedes forward voltage, then significantly increased by the electric current of light-emitting diode.In general, in most of opereating specification, the luminous intensity based on the lighting device of light-emitting diode is directly proportional with the electric current passed through, but then not like this when operating in high electric current.Being generally the drive unit that the lighting device based on light-emitting diode designs, is all provide a constant electric current to be master, can send stable light and to extend life-span of light-emitting diode.
In order to improve the brightness of the lighting device based on light-emitting diode, normally a majority light-emitting diode is cascaded, form an illumination unit based on light-emitting diode, and most the illumination units based on light-emitting diode can further be cascaded, and form a lighting device.Such as, No. 6777891st, United States Patent (USP) discloses multiple illumination unit based on light-emitting diode, and forming one can by computer-controlled lamp string, and wherein each illumination unit forms a separately controllable node in lamp string.
Operating voltage required for each lighting device, normally depend on the forward voltage of the light-emitting diode in illumination unit, how many light-emitting diodes are had in each illumination unit, each illumination unit is how phase mutual connection joins, and each illumination unit is in lighting device, be how to receive the voltage from power supply.Therefore, in most application, all need the supply voltage conversion equipment of certain type, by general more general high-voltage power supply, convert lower voltage to, to be supplied to one or more illumination unit based on light-emitting diode.Because need such a voltage conversion device, cause the lighting apparatus decreasing efficiency based on light-emitting diode, cost up, be also difficult to reduce its volume.
No. 7781979th, United States Patent (USP) provides the device that controls the light-emitting diode of series connection.Two or more light-emitting diode is wherein had to be connected in series.Upon application of a voltage, namely the electric current of a series connection flows through light-emitting diode.Wherein have a light-emitting diode at least by the one or more controllable current path of parallel connection, make the current segment of series connection flow through these controllable current paths, not need voltage conversion device can use general more general high-voltage power supply.Therefore this device can use the alternating voltage as 120V or 240V.No. 2010/0308739th, U.S. Patent Bulletin discloses the device multiple light-emitting diode mutual connection being connected into multiple light-emitting diodes pipeline section, and multiple derailing switch multiple light-emitting diodes pipeline section mutual connection therewith, choose and control a certain light-emitting diodes pipeline section, it is connected from a light-emitting diode series current path and accesses or cut every separating.
More and more be used on the lighting apparatus of high brightness based on the illumination unit of light-emitting diode because existing, how to use existing AC power on wall, improve the utilance of light-emitting diode flexibly and effectively, and stability and high brightness are provided, drive and be connected most the methods for designing based on the illumination unit of light-emitting diode and device, having formed a kind of indispensable demand.In addition, the how control connection illumination unit based on light-emitting diode together, makes brightness of illumination can according to different lighting requirements, or the change of AC supply voltage, and providing different light illumination modes, is also very important.
Summary of the invention
The invention provides a kind of can efficient driving based on light emitting diode illuminating apparatus, and the magnitude of voltage of alternating voltage according to input, creates to provide the drive unit of multiple modes of operation.In the present invention, the lighting device based on light-emitting diode is divided into multiple illumination stage based on light-emitting diode, and each illumination stage includes one or more illumination unit based on light-emitting diode.The plurality of illumination stage based on light-emitting diode is connected mutually, and last illumination stage is the ground connection via a current controller then.
Main purpose of the present invention is to provide one can when input voltage value increases, optionally open some or all illumination stage based on light-emitting diode, and when input voltage value reduces, optionally close some or all illumination stage based on light-emitting diode, thus provide multiple modes of operation to the lighting device based on light-emitting diode.
Therefore, preferably implement in example for first of the present invention, device of the present invention includes the multiple on-off controllers under switched voltage comparative unit controls, and each on-off controller is in parallel based on the illumination stage of in the illumination stage of light-emitting diode with multiple.Several common signal, according to input voltage value, is delivered to the plurality of on-off controller by switched voltage comparative unit, and these common signals can Resetting Switching controller, makes the switching over of on-off controller synchronous, and indicative input magnitude of voltage rises or declines.
Preferably implement in example at first, each on-off controller, except receiving several common signal, also have an input to receive input transmission signal, and an output is to send output transmission signal.
The switched voltage comparative unit in example is preferably implemented at this, first first transmission signal is produced, delivered to the input of first on-off controller, again via the transmission of each on-off controller, arrive last on-off controller, make the plurality of illumination stage based on light-emitting diode, can increasing or lowering and optionally opened or close along with input voltage.
Preferably implement in example at second of the present invention, device of the present invention also includes the multiple on-off controllers under switched voltage comparative unit controls, each illumination stage based on light-emitting diode has an anode to connect with the negative terminal of the previous illumination stage based on light-emitting diode, and one end of current controller then linked by each on-off controller from multiple anode based on the illumination stage of the illumination stage of light-emitting diode.
Preferably implement in example at second, several common signal, according to input voltage value, is delivered to the plurality of on-off controller by switched voltage comparative unit too.But each on-off controller, except receiving several common signal, also have two inputs respectively to receive two the input transmission signals sent here from former and later two on-off controllers, and an output is to send an output transmission signal to former and later two on-off controllers.
Preferably to implement example the same with first, second preferably implements the switched voltage comparative unit in example, also first produces first transmission signal, is delivered to an input of first on-off controller, again via the transmission of each on-off controller, arrive last on-off controller.In addition, second preferably implements the switched voltage comparative unit in example, produces a last transmission signal again, is delivered to an input of last on-off controller, then forward via each on-off controller, arrive first on-off controller.
Preferably implement in example second, the plurality of illumination stage based on light-emitting diode, can along with increasing gradually of input voltage value by opening according to order, or when input voltage value arrives after peak, along with input voltage value lowers and gradually by according to closedown sequentially.
Below according to several preferred enforcement example of the present invention, with reference to attached graphic detailed description, for those skilled in the art, read the following detailed description according to several preferred enforcement example of the present invention, refer again to attached graphic, very clearly should understand the present invention.Accompanying drawing is in order to the present invention can further be understood, and also forms a part for implementation of the present invention simultaneously, by attached diagram, enforcement example of the present invention is described, and explains principle of the present invention.
Accompanying drawing explanation
Fig. 1 shows the lighting device based on light-emitting diode in the present invention, operates in the magnitude of voltage V of the input power under the different light illumination mode of M kind
iN;
Fig. 2 display preferably implements example according to of the present invention first, for driving most based on the circuit diagram of the lighting device of the illumination stage of light-emitting diode;
Fig. 3 shows in the present invention with the waveform of the common signal produced for input voltage through the alternating voltage of over commutation;
The circuit example of the on-off controller that Fig. 4 display is preferably implemented example according to of the present invention first and designed;
The circuit example of the switched voltage comparative unit that Fig. 5 display is preferably implemented example according to of the present invention first and designed;
The lighting device based on light-emitting diode that Fig. 6 display is preferably implemented example according to of the present invention first and designed;
Fig. 7 display preferably implements example according to of the present invention second, for driving most based on the circuit diagram of the lighting device of the illumination stage of light-emitting diode;
The circuit example of the on-off controller that Fig. 8 display is preferably implemented example according to of the present invention second and designed;
The circuit example of the switched voltage comparative unit that Fig. 9 display is preferably implemented example according to of the present invention second and designed;
The lighting device based on light-emitting diode that Figure 10 display is preferably implemented example according to of the present invention second and designed;
Another circuit example of the switched voltage comparative unit that Figure 11 display is preferably implemented example according to of the present invention second and designed; And
Figure 12 shows the detailed circuit of the Mode Areas component voltage comparator in Figure 11.
Wherein, description of reference numerals is as follows:
100:101:102:10N: based on the illumination stage of light-emitting diode
201:202:20N: on-off controller
301: switched voltage comparative unit
401: demand limiter
501: resistor
600:601:602:603:60N: based on the illumination stage of light-emitting diode
801:802:803:80N: on-off controller
901: switched voltage comparative unit
2001: derailing switch
3001: voltage comparator
8001: derailing switch
9001: voltage comparator
9002: Mode Areas component voltage comparator
3011:2011:2021:8011:8021:8031:9011:9012: transmission signal
Embodiment
As mentioned above, in order to improve the brightness of the lighting device based on light-emitting diode, most the illumination units including more than one light-emitting diode are connected, usually to increase luminous intensity.Therefore, providing multiple possible light illumination mode, to make lighting device can operate with different luminous intensities, is in demand.For reaching this object, the most direct method is to each illumination unit based on light-emitting diode, other derailing switch each is used to control this illumination unit, make it be serially connected in lighting device, or walked around in a short circuit manner, but this method needs very expensive hardware cost.
The present invention proposes a kind of device of innovation, by the lighting device based on light-emitting diode, controls with the method for segmentation.This new method is by the illumination units based on light-emitting diode all in lighting device, and be divided into most based on the illumination stage of light-emitting diode, each illumination stage includes the illumination unit of the light-emitting diode of more than one series connection.Under each light illumination mode, some illumination stage based on light-emitting diode in lighting device, can be controlled so as to mutual series connection, other illumination stage is then bypassed.For the purpose of simplifying the description, following example supposes each illumination unit based on light-emitting diode, only has a light-emitting diode.
Fig. 1 shows in the present invention, the lighting device based on light-emitting diode is operated in the magnitude of voltage V of the input power under the different light illumination mode of M kind
iN.This input power is through the alternating voltage of rectification, and under often kind of different operator scheme, input voltage value can make the illumination stage of varying number open.As shown in Figure 1, as input voltage value V
iNat time T
iwith T
i+1between from V
ibe increased to V
i+1time, pattern-i should be operated in based on the lighting device of light-emitting diode.When the input voltage value through over commutation arrives peak V
iN (MAX)after, magnitude of voltage starts to lower.When input voltage value is at V
mwith V
iN (MAX)between time, pattern-M should be operated in based on lighting device of light-emitting diode, and when input voltage value drops to V
iwith V
i+1between time, then operate in again pattern-i.Magnitude of voltage V
iwith V
i+1between difference be Mode Areas component voltage V
mdiff.
Fig. 2 shows and preferably implements example according to of the present invention first, for driving most based on the circuit diagram of the lighting device of the illumination stage of light-emitting diode.Lighting device based on light-emitting diode comprises most the illumination stage 101,102 based on light-emitting diode ..., 10N, is series at input voltage V with a current controller 401
iNand between ground.Switched voltage comparative unit 301 controls multiple on-off controller 201,202 ..., 20N.Each illumination stage based on light-emitting diode has an anode and a negative terminal, and each on-off controller and is connected in parallel between this anode and negative terminal based on the illumination stage of light-emitting diode.
In the present invention, switched voltage comparative unit 301 is according to input voltage V
iNcompare the switching over voltage of each operator scheme.Switched voltage comparative unit 301 produces several common signal and delivers to each on-off controller, and these signals comprise reset signal, up/down signal, and synchronizing signal.Reset signal by all on-off controllers 201,202 ..., 20N is reset to initial condition, up/down Signal aspects input voltage V
iNthat synchronizing signal makes all on-off controllers 201,202 in increase or minimizing ..., 20N can synchronism switching.Fig. 3 shows with the waveform of the common signal produced for input voltage through the alternating voltage of over commutation.
According to the present invention, as shown in Figure 2, each on-off controller receives an input transmission signal, and sends an output transmission signal to next on-off controller.As can be seen from Figure 2.With first based on the illumination stage 101 of light-emitting diode first on-off controller 201 in parallel, receive the first transmission signal 3011 produced from switched voltage comparative unit 301.First on-off controller 201 sends transmission signal 2011 to second switch controller 202.And second switch controller 202 sends transmission signal 2021 again to next on-off controller, the rest may be inferred.In some applications, do not need to be controlled in the illumination stage 101 based on light-emitting diode topmost, therefore do not need an on-off controller in parallel.In this case, the first transmission signal 3011 produced can be delivered to second based on the illumination stage 102 of light-emitting diode second on-off controller 202 in parallel by switched voltage comparative unit 301.
In the present invention, each on-off controller 201,202, ..., 20N is by the control of switched voltage comparative unit 301, and the illumination stage based on light-emitting diode making it be in parallel is connected with other the illumination stage based on light-emitting diode, maybe the illumination stage short circuit based on light-emitting diode be in parallel is walked around.Each illumination stage based on light-emitting diode can have the illumination unit based on light-emitting diode of varying number, each on-off controller 201,202 ..., 20N can be not identical.Current controller 401 shown is in fig. 2 a demand limiter, and this current controller also can be replaced by a resistor 501.
As shown in Figure 1, as input voltage value V
iNat time T
iwith T
i+1between from V
ibe increased to V
i+1time, pattern-i should be operated in based on the lighting device of light-emitting diode.According to the preferred enforcement example of Fig. 2 display, on-off controller 201,202 ..., 20N, by the control of switched voltage comparative unit 301, optionally can open illumination by some or most based on the light-emitting diode unit in the illumination stage of light-emitting diode.
For example, at time T
1and T
2between, switched voltage comparative unit 301 can control switch controller 201, makes to open illumination in the light-emitting diode unit of the illumination stage 101 based on light-emitting diode, and other illumination stage all are then closed.At time T
2and T
3between, switched voltage comparative unit 301 can control switch controller 202, makes to open illumination in the light-emitting diode unit of the illumination stage 102 based on light-emitting diode, and other illumination stage all are then closed.As input voltage value V
iNbe increased to V
mwith V
iN (MAX)between time, switched voltage comparative unit 301 can control all on-off controllers 201,202 ..., 20N, and make all in the illumination stage 101,102 based on light-emitting diode ..., the light-emitting diode unit of 10N all opens illumination.
Fig. 4 shows an on-off controller 201,202 designed according to the of the present invention first preferred enforcement example ..., the circuit example of 20N.The circuit of on-off controller comprises a derailing switch 2001 and the parallel connection of the corresponding illumination stage based on light-emitting diode.On-off controller receives from switched voltage comparative unit 301 or is connected to the input transmission signal P that another on-off controller of front end sends
in, also send an output transmission signal P simultaneously
outto another on-off controller being connected to rear end.Switched voltage comparative unit 301 will be synchronous, reset, and the common signal such as up/down delivers to each on-off controller, makes the logical circuit in on-off controller be produced output transmission signal P
out.On-off controller is inner also produces the control signal that is used for opening or closing derailing switch 2001.
Fig. 5 shows the circuit example of the switched voltage comparative unit 301 that designs according to the of the present invention first preferred enforcement example.Switched voltage comparative unit 301 includes most voltage comparators 3001.According to input voltage V
iNmagnitude of voltage, it is synchronous that the circuit in switched voltage comparative unit 301 produces shown by the first transmission signal and Fig. 3, resets, and the common signal such as up/down.
Fig. 6 shows a lighting device based on light-emitting diode designed according to the of the present invention first preferred enforcement example, wherein includes four illumination stage based on light-emitting diode.An illumination stage 600 based on light-emitting diode in the top is containing one based on light-emitting diode, and other three illumination stage 601-603 based on light-emitting diode then distinctly have one, two and four based on light-emitting diode.Three on-off controller 201-203 are distinctly in parallel with three illumination stage 601-603 based on light-emitting diode.Switched voltage comparative unit 301 will be synchronous, reset, and the common signal such as up/down delivers to each on-off controller 201-203, and the first transmission signal is delivered to on-off controller 201.On-off controller 201 sends an output transmission signal again to on-off controller 202, and on-off controller 202 sends an output transmission signal to on-off controller 203.
According to the present invention, in different modes of operation, how to open or close some or all the illumination stage based on light-emitting diode, determined by the design of on-off controller.With on-off controller shown in Fig. 4, the lighting device based on light-emitting diode in figure 6, operates under can being controlled in eight kinds of patterns, and one to eight light-emitting diodes is opened illumination.
At the lighting device based on light-emitting diode of Fig. 6, on-off controller 201-203 wherein, can form the up/down counter of three, to control the derailing switch 2001 in on-off controller with the controller circuitry of Fig. 4.The transmission signal sent from switched voltage comparative unit 301 controls the up/down counting of this counter of three, when on-off controller 201-203 is reset, because the derailing switch 2001 in all on-off controller 201-203 is all shorted, the light-emitting diode only in illumination stage 600 opens illumination.
As input voltage V
iNincrease, and transmission signal is through the transmission of on-off controller 201-203, the up/down counter of three that are formed by on-off controller 201-203, can in pattern-1, pattern-2, pattern-3, pattern-4, pattern-5, pattern-6, and pattern-7 times, export 011,101,001,110,010, the switching signal of 100 and 000, controls derailing switch 2001 in each on-off controller to open the light-emitting diode of varying number, thus provides different operator scheme to the lighting device based on light-emitting diode.For example, pattern-3 times, the value of this up/down counter of three is 001, and two positions of on-off controller 201 and 202 are 0.Therefore, except the light-emitting diode in illumination stage 600, the light-emitting diode in illumination stage 601 and 602 also all opens illumination.
Fig. 7 shows and preferably implements example according to of the present invention second, for driving most based on the circuit diagram of the lighting device of the illumination stage of light-emitting diode.Preferably implement in example at this, this lighting device also comprises most the illumination stage 101,102 based on light-emitting diode ..., 10N, is series at input voltage V with a current controller 401
iNand between ground.Each illumination stage based on light-emitting diode has an anode and a negative terminal, to be connected to the first end of current controller 401 from the anode of this illumination stage with a corresponding on-off controller, and one switches voltage compare unit 901 and controls multiple on-off controller 801,802, ..., 80N.
As can be seen from Figure 7, preferably implement in example at this, each on-off controller connects corresponding with parallel way based on all illumination stage based on light-emitting diode under the illumination stage of light-emitting diode.For example, on-off controller 801 is in parallel with the illumination stage 101-10N based on light-emitting diode, on-off controller 802 is in parallel with the illumination stage 102-10N based on light-emitting diode, and on-off controller 803 is then in parallel with the illumination stage 103-10N based on light-emitting diode, and the rest may be inferred.
Preferably to implement example similar with of the present invention first, and switched voltage comparative unit 901 is according to input voltage V
iNcompare the switching over voltage of each operator scheme.Switched voltage comparative unit 901 produces several common signal and delivers to each on-off controller, and these signals comprise reset signal, up/down signal, and synchronizing signal.Reset signal by all on-off controllers 801,802 ..., 80N is reset to initial condition, up/down Signal aspects input voltage V
iNthat synchronizing signal makes all on-off controllers 801,802 in increase or minimizing ..., 80N can synchronism switching.
Preferably example is implemented according to of the present invention second, except first and last on-off controller, each on-off controller all sends an output transmission signal to former and later two on-off controllers, and each on-off controller also all receives the output transmission signal sent from former and later two on-off controllers.For example, on-off controller 802 is sent and is exported transmission signal 8021 to on-off controller 801 and 803, and receives the output transmission signal 8011 sent from on-off controller 801, and from the output transmission signal 8031 that on-off controller 803 is sent.
As can be seen from Figure 7, the first on-off controller 801 does not have the on-off controller of front end, and therefore it receives first transmission signal 9011 sent from switched voltage comparative unit 901.In this preferred enforcement example, last on-off controller 80N does not have the on-off controller of rear end yet, and therefore its receives last transmission signal 9012 sent from switched voltage comparative unit 901.
As previously mentioned, in some applications, in the illumination stage 101 based on light-emitting diode topmost, the necessity do not controlled.In the case, if on-off controller 801 does not exist, first transmission signal 9011 that switched voltage comparative unit 901 sends, is just directly sent to on-off controller 802.In addition, each illumination stage based on light-emitting diode in the present invention can have the illumination unit based on light-emitting diode of varying number, each on-off controller 801,802 ..., 80N must not be identical with other on-off controller.
Preferably implement in example of the present invention second, each on-off controller 801,802, ..., 80N is by the control of switched voltage comparative unit 901, and the illumination stage based on light-emitting diode making it be in parallel opens illumination, maybe the illumination stage short circuit based on light-emitting diode be in parallel is walked around.For example, if on-off controller 801 is controlled so as to short circuit, all illumination stage based on light-emitting diode are all shorted and walk around.If on-off controller 802 is controlled so as to short circuit, then except first based on except the illumination stage of light-emitting diode, other all illumination stage based on light-emitting diode is all shorted to be walked around, and the rest may be inferred.
The of the present invention second preferred operation implementing example, also as shown in Figure 1, as input voltage value V
iNat time T
iwith T
i+1between from V
ibe increased to V
i+1time, pattern-i should be operated in based on the lighting device of light-emitting diode.According to Fig. 7 second preferably implements example, at time T
1and T
2between, switched voltage comparative unit 901 can control switch controller 801, make opening illumination based on the light-emitting diode unit in the illumination stage 101 of light-emitting diode, and other illumination stage 102,103 all, ..., 10N, be then subject to on-off controller 802,803, ..., the control of 80N and closing.
At time T
2and T
3between, switched voltage comparative unit 901 can control switch controller 801 and 802, make opening illumination based on the light-emitting diode unit in the illumination stage 101 and 102 of light-emitting diode, and other illumination stage 103 all, ..., 10N, be then subject to on-off controller 803, ..., the control of 80N and closing.
Preferably implement in example at second shown by Fig. 7, each illumination stage based on light-emitting diode opens illumination, as input voltage value V according to order
iNv is increased to from 0
iN (MAX)time, illumination stage 101, illumination stage 102 ..., illumination stage 10N sequentially opens illumination.When input voltage value reaches the highest and starts to reduce, each illumination stage based on light-emitting diode is also closed according to order.
Fig. 8 shows an on-off controller 801,802 designed according to the of the present invention second preferred enforcement example ..., the circuit example of 80N.The circuit of on-off controller comprises a derailing switch 8001 and the parallel connection of the corresponding illumination stage based on light-emitting diode.On-off controller receives the input transmission signal P1 sent from the on-off controller being connected to front end
inand receive another input transmission signal P2 sent from another on-off controller being connected to rear end
in.Also send an output transmission signal P simultaneously
outto two on-off controllers being connected to front and back end.Switched voltage comparative unit 901 will be synchronous, reset, and the common signal such as up/down delivers to each on-off controller, makes the logical circuit in on-off controller be produced output transmission signal P
out.On-off controller is inner also produces the control signal that is used for opening or closing derailing switch 8001.
Fig. 9 shows the circuit example of the switched voltage comparative unit 901 that designs according to the of the present invention second preferred enforcement example.Switched voltage comparative unit 901 includes most voltage comparators 9001.According to input voltage V
iNmagnitude of voltage, it is synchronous that the circuit in switched voltage comparative unit 901 produces shown by Fig. 3, resets, and the common signal such as up/down.In addition, as shown in fig. 7, switched voltage comparative unit 901 also produce first and last transmission signal 9011,9012 to first and last two on-off controllers 801 and 80N.
Figure 10 shows a lighting device based on light-emitting diode designed according to the of the present invention second preferred enforcement example, wherein includes four illumination stage based on light-emitting diode.At the on-off controller that an illumination stage 100 based on light-emitting diode is topmost not corresponding.Three on-off controller 801-803 are respectively since the anode of three corresponding illumination stage 101-103 based on light-emitting diode is connected to the first end of current controller 401.
Switched voltage comparative unit 901 will be synchronous, reset, and the common signal such as up/down delivers to each on-off controller 801-803, and the first transmission signal 9011 be delivered to on-off controller 801 and last transmission signal 9012 delivers to on-off controller 803.On-off controller 801 sends an output transmission signal 8011 again to on-off controller 802, on-off controller 802 sends again an output transmission signal 8021 to on-off controller 801 and 803, and on-off controller 803 also sends an output transmission signal 8031 to on-off controller 802.
The switched voltage comparative unit 901 designed according to the of the present invention second preferred enforcement example, also can implement with the circuit example shown by Figure 11.In the circuit, switched voltage comparative unit 901 includes two voltage comparators 9001 and a Mode Areas component voltage comparator 9002.Produced according to replacement and up/down two common signal by Mode Areas component voltage comparator 9002 unlike, the synchronizing signal in Figure 11 with Fig. 9, instead of produced by most individual voltage comparators 9001.
Figure 12 shows the detailed circuit of the Mode Areas component voltage comparator 9002 in Figure 11.Except replacement and up/down two common signal, by input voltage V
iNand the magnitude of voltage V derived
x=α * V
iNfor the input of Mode Areas component voltage comparator 9002, wherein α is a scale factor being less than 1.
According to the present invention, based on the light-emitting diode in the illumination stage of light-emitting diode, be all types of light-emitting diode of general reference, as semiconductor light-emitting-diode and Organic Light Emitting Diode, these light-emitting diodes may be luminous at various frequency spectrum.Lighting device of the present invention, can comprise the illumination stage based on light-emitting diode of suitable hop count, each illumination stage based on light-emitting diode, can comprise the illumination unit based on light-emitting diode of right quantity.These quantity all can be determined according to the requirement of practical application on equipment or device.
Be more than the circuit example that on-off controller and switched voltage comparative unit are shown and illustrate, be only used to principle of the present invention is described.On-off controller and switched voltage comparative unit can design with the circuit of equivalence and reach the same function.Derailing switch in on-off controller is also make a general reference the switch module generally including and can suitably connect or cut out a circuit, and derailing switch can be mechanical or electric power type, also can be the semiconductor switching device with IC manufacturing.
In a word, the invention provides a kind of drive unit, control and the lighting device driven multiple illumination unit segmentation based on light-emitting diode with most on-off controllers, and produce several common signal by switched voltage comparative unit and one or two transmission signals carry out control switch controller, make it illumination stage of corresponding light-emitting diode can be opened illumination or short circuit is walked around, thus provide multiple different operator scheme.
Only by several preferred enforcement example, the present invention is described although above, but those skilled in the art, can understand clearly, still has many accommodations of not describing and amendment, is not departing within following defined claim of the present invention.
Claims (22)
1. one based on the drive unit of majority the illumination unit of light-emitting diode, it is characterized in that, comprising:
Multiple illumination stage based on light-emitting diode is connected in series, and the plurality of have an anode based on each illumination stage in the illumination stage of light-emitting diode, a negative terminal, and at least one illumination unit based on light-emitting diode is connected in series between above-mentioned anode and negative terminal;
One input power is connected to the anode of first illumination stage of above-mentioned multiple illumination stage based on light-emitting diode;
Its first end of one current controller is connected to the negative terminal of last illumination stage of above-mentioned multiple illumination stage based on light-emitting diode, its second end ground connection;
Multiple on-off controller, each in the plurality of on-off controller comprises set of number logical circuit and a switch driving circuit and a derailing switch, Digital Logical Circuits in the plurality of on-off controller forms the up/down counter of a multidigit, derailing switch in each on-off controller in the plurality of on-off controller is multiple corresponding and in parallel with this illumination stage based on the illumination stage of in the illumination stage of light-emitting diode with above-mentioned separately, and each on-off controller in the plurality of on-off controller receives an input transmission signal, and generation one exports transmission signal; And
One switches voltage compare unit, comprise most voltage comparators, most or gating element and most non-gating elements, this switched voltage comparative unit receives the magnitude of voltage of above-mentioned input power and produces via this majority voltage comparator, this majority or gating element and this majority non-gating element and send the individual common signals of majority each on-off controller to above-mentioned multiple on-off controller, and generation first transmission signal is using the input transmission signal of the first on-off controller as above-mentioned multiple on-off controller;
This majority common signal comprises a reset signal to reset above-mentioned multiple on-off controller, one synchronizing signal is to make above-mentioned multiple on-off controller synchronism switching, increase with a up/down signal with the magnitude of voltage showing above-mentioned input power or lower, and the Digital Logical Circuits of each on-off controller in the plurality of on-off controller controls signal to each derailing switch in the plurality of on-off controller according to this reset signal, this up/down signal and this synchronizing signal, thus the plurality of illumination stage is opened by according to order or closes;
Wherein in above-mentioned multiple on-off controller, except above-mentioned first on-off controller, the output transmission signal that the input transmission signal of each on-off controller produces immediately preceding the on-off controller of its front end.
2. device as claimed in claim 1, it is characterized in that, each on-off controller include one by its input transmission signal control, and can by the derailing switch of its corresponding illumination stage short circuit, and the output transmission signal that this on-off controller produces produces according to its input transmission signal and an above-mentioned majority common signal.
3. device as claimed in claim 1, is characterized in that, above-mentioned switched voltage comparative unit comprises most voltage comparators, produces above-mentioned first transmission signal and an above-mentioned majority common signal according to the magnitude of voltage of above-mentioned input power.
4. device as claimed in claim 1, it is characterized in that, above-mentioned multiple based in the illumination stage of light-emitting diode, the rarest illumination stage does not have on-off controller in parallel with it.
5. device as claimed in claim 1, is characterized in that, above-mentioned multiple based in the illumination stage of light-emitting diode, and the quantity of the illumination unit based on light-emitting diode that the rarest illumination stage is wherein contained is different from other illumination stage.
6. device as claimed in claim 1, it is characterized in that, in above-mentioned multiple on-off controller, the circuit of the rarest on-off controller is different from other on-off controller.
7. device as claimed in claim 1, it is characterized in that, above-mentioned current controller is a demand limiter.
8. device as claimed in claim 1, it is characterized in that, above-mentioned current controller is a resistor.
9. device as claimed in claim 1, it is characterized in that, above-mentioned multiple illumination stage based on light-emitting diode includes the first illumination stage, second illumination stage, 3rd illumination stage, and the 4th illumination stage, and wherein above-mentioned multiple on-off controller include three on-off controllers respectively with the second illumination stage, 3rd illumination stage, and the 4th illumination stage is in parallel.
10. device as claimed in claim 9, it is characterized in that, above-mentioned multiple on-off controller forms the counter of three, it is one with each on-off controller wherein, receive its input transmission signal to control derailing switch contained in it, make the illumination stage short circuit that each on-off controller is corresponding, or connect with other illumination stage.
11. devices as claimed in claim 10, it is characterized in that, above-mentioned first illumination stage comprises an illumination unit based on light-emitting diode, above-mentioned second illumination stage comprises an illumination unit based on light-emitting diode, above-mentioned 3rd illumination stage comprises two illumination units based on light-emitting diode, and above-mentioned 4th illumination stage comprises four illumination units based on light-emitting diode.
12. devices as claimed in claim 11, is characterized in that, above-mentioned switched voltage comparative unit controls above-mentioned multiple on-off controller, under different kind operator schemes, one to eight illumination units based on light-emitting diode can be made to open illumination.
13. one based on the drive unit of majority the illumination unit of light-emitting diode, it is characterized in that, comprising:
Multiple illumination stage based on light-emitting diode is connected in series, and the plurality of have an anode based on each illumination stage in the illumination stage of light-emitting diode, a negative terminal, and at least one illumination unit based on light-emitting diode is connected in series between above-mentioned anode and negative terminal;
One input power is connected to the anode of first illumination stage of above-mentioned multiple illumination stage based on light-emitting diode;
Its first end of one current controller is connected to the negative terminal of last illumination stage of above-mentioned multiple illumination stage based on light-emitting diode, its second end ground connection;
Multiple on-off controller, each in the plurality of on-off controller comprises set of number logical circuit and a switch driving circuit and a derailing switch, derailing switch in each on-off controller in the plurality of on-off controller is multiple corresponding based on the illumination stage of in the illumination stage of light-emitting diode with above-mentioned separately, and each own first end is connected with the anode of this illumination stage, and have the second end to be connected to the first end of above-mentioned current controller, and each on-off controller in the plurality of on-off controller receives the first input transmission signal, with the second input transmission signal, and produce an output transmission signal, and
One switches voltage compare unit, comprise most voltage comparators, most or gating element and most non-gating elements, this switched voltage comparative unit receive above-mentioned input power magnitude of voltage and via this majority voltage comparator, this majority or gating element and this majority non-gating element produce and send the individual common signals of majority each on-off controller to above-mentioned multiple on-off controller, with generation first transmission signal using first of the first on-off controller as above-mentioned multiple on-off controller the input transmission signal, and produce last transmission signal using second of last on-off controller as above-mentioned multiple on-off controller the input transmission signal,
This majority common signal comprises a reset signal to reset above-mentioned multiple on-off controller, one synchronizing signal is to make above-mentioned multiple on-off controller synchronism switching, increase with a up/down signal with the magnitude of voltage showing above-mentioned input power or lower, and the Digital Logical Circuits of each on-off controller in the plurality of on-off controller controls signal to each derailing switch in the plurality of on-off controller according to this reset signal, this up/down signal and this synchronizing signal, thus the plurality of illumination stage is opened by according to order or closes;
Wherein in above-mentioned multiple on-off controller, except above-mentioned first on-off controller, the output transmission signal that first input transmission signal of each on-off controller produces immediately preceding the on-off controller of its front end, and except last on-off controller above-mentioned, the output transmission signal that the second input transmission signal of each on-off controller produces immediately preceding the on-off controller of its rear end.
14. devices as claimed in claim 13, it is characterized in that, each on-off controller include one by its first input transmission signal and second input transmission signal control, and can by the derailing switch of its corresponding illumination stage short circuit, and the output transmission signal that produces of this on-off controller inputs transmission signal and an above-mentioned majority common signal according to its first input transmission signal and second and produces.
15. devices as claimed in claim 13, it is characterized in that, above-mentioned switched voltage comparative unit comprises most voltage comparators, produces above-mentioned first transmission signal according to the magnitude of voltage of above-mentioned input power, above-mentioned second input transmission signal, and an above-mentioned majority common signal.
16. devices as claimed in claim 13, it is characterized in that, above-mentioned switched voltage comparative unit comprises two voltage comparators and a Mode Areas component voltage comparator, above-mentioned first transmission signal is produced according to the magnitude of voltage of above-mentioned input power, above-mentioned second input transmission signal, and an above-mentioned majority common signal.
17. device as claimed in claim 16, it is characterized in that, above-mentioned Mode Areas component voltage comparator receives a part of voltage of the magnitude of voltage of above-mentioned input power, above-mentioned reset signal, with above-mentioned up/down signal, and a Mode Areas component voltage, produce above-mentioned synchronizing signal.
18. devices as claimed in claim 13, is characterized in that, above-mentioned multiple based in the illumination stage of light-emitting diode, the rarest illumination stage does not have on-off controller in parallel with it.
19. devices as claimed in claim 13, is characterized in that, above-mentioned multiple based in the illumination stage of light-emitting diode, and the quantity of the illumination unit based on light-emitting diode that the rarest illumination stage is wherein contained is different from other illumination stage.
20. device as claimed in claim 13, it is characterized in that, in above-mentioned multiple on-off controller, the circuit of the rarest on-off controller is different from other on-off controller.
21. devices as claimed in claim 13, it is characterized in that, above-mentioned current controller is a demand limiter.
22. devices as claimed in claim 13, it is characterized in that, above-mentioned current controller is a resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210371527.6A CN103716935B (en) | 2012-09-29 | 2012-09-29 | Based on the drive unit of a majority illumination unit of light-emitting diode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210371527.6A CN103716935B (en) | 2012-09-29 | 2012-09-29 | Based on the drive unit of a majority illumination unit of light-emitting diode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103716935A CN103716935A (en) | 2014-04-09 |
| CN103716935B true CN103716935B (en) | 2016-01-13 |
Family
ID=50409369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210371527.6A Expired - Fee Related CN103716935B (en) | 2012-09-29 | 2012-09-29 | Based on the drive unit of a majority illumination unit of light-emitting diode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103716935B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105188211A (en) * | 2015-09-02 | 2015-12-23 | 绍兴恒力特微电子有限公司 | Light-emitting diode (LED) circuit compatible with low-voltage and high-voltage input and constant-power output |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101137261A (en) * | 2006-08-29 | 2008-03-05 | 安华高科技Ecbuip(新加坡)私人有限公司 | Device and method for driving LED |
| CN101668373A (en) * | 2009-09-29 | 2010-03-10 | 李云霄 | LED light source driving circuit supplied by AC power |
| CN101772245A (en) * | 2010-03-12 | 2010-07-07 | 陈林 | LED lighting device capable of automatically adapting to power supply voltage |
| CN102349354A (en) * | 2009-02-17 | 2012-02-08 | 鲁米自然株式会社 | Power-saving led lighting apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8901835B2 (en) * | 2010-09-15 | 2014-12-02 | Analog Integrations Corporation | LED lighting systems, LED controllers and LED control methods for a string of LEDS |
-
2012
- 2012-09-29 CN CN201210371527.6A patent/CN103716935B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101137261A (en) * | 2006-08-29 | 2008-03-05 | 安华高科技Ecbuip(新加坡)私人有限公司 | Device and method for driving LED |
| CN102349354A (en) * | 2009-02-17 | 2012-02-08 | 鲁米自然株式会社 | Power-saving led lighting apparatus |
| CN101668373A (en) * | 2009-09-29 | 2010-03-10 | 李云霄 | LED light source driving circuit supplied by AC power |
| CN101772245A (en) * | 2010-03-12 | 2010-07-07 | 陈林 | LED lighting device capable of automatically adapting to power supply voltage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103716935A (en) | 2014-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202759632U (en) | Drive circuit and lighting device of light emitting diode | |
| US9357607B2 (en) | LED light source | |
| CN107172755B (en) | A kind of LED light bar network current foldback circuit, driving power and television set | |
| CN102202445B (en) | LED drive circuit, LED illumination fixture, LED illumination device and LED illumination system | |
| CN101916548B (en) | Control circuit of light-emitting diode (LED) lamp tube of liquid crystal display | |
| CN105101521B (en) | Light emitting diode circuit and driving method thereof | |
| CN106304518B (en) | A kind of control circuit and method adjusting LED colour temperature or brightness | |
| CN104427711A (en) | LED lighting systems, LED controllers and LED control methods for a string of LEDs | |
| CN205232541U (en) | LED driver embeds dial switch isolation control circuit | |
| TWI584672B (en) | Multicolor led driver structure | |
| CN102387628A (en) | LED (Light-Emitting Diode) dimming control circuit | |
| CN105025632A (en) | Light-emitting diode (LED) lamp capable of color modulation by switches and control circuit thereof | |
| US9055639B2 (en) | Apparatus for driving a plurality of segments of LED-based lighting units | |
| CN105323916A (en) | Multi-section power supply control circuit of light emitting diode | |
| JP2017112111A (en) | Lighting apparatus and system having electrical insulation structure between dimmer and driver | |
| CN103152933A (en) | LED (Light Emitting Diode) drive circuit capable of adjusting light and color temperature | |
| CN104219825B (en) | driving device of light emitting diode | |
| CN201097468Y (en) | LED light source circuit | |
| CN103716935B (en) | Based on the drive unit of a majority illumination unit of light-emitting diode | |
| CN103906294A (en) | Apparatus provided with universal structure capable of driving multiple light emitting diode strings | |
| KR20140084732A (en) | Power supplies for LED modules | |
| CN204810620U (en) | Linear LED drive circuit of segmentation | |
| KR101518554B1 (en) | Power supplies to drive the multiple LED modules and the lighting apparatus including the same | |
| CN103298194A (en) | Lighting device | |
| CN103179750A (en) | Adjustable-color-temperature dimmable LED (light emitting diode) driving circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160113 Termination date: 20200929 |