CN103716935A - Drive device of a number of lighting units based on light emitting diodes - Google Patents
Drive device of a number of lighting units based on light emitting diodes Download PDFInfo
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- CN103716935A CN103716935A CN201210371527.6A CN201210371527A CN103716935A CN 103716935 A CN103716935 A CN 103716935A CN 201210371527 A CN201210371527 A CN 201210371527A CN 103716935 A CN103716935 A CN 103716935A
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Abstract
The invention provides a lighting device based on light emitting diodes. The lighting device comprises a number of lighting sections based on the light emitting diodes, and is connected in series with a current controller. Each lighting section based on the light emitting diode comprises at least one lighting unit which is based on the light emitting diode and is connected in series. A number of lighting sections based on the light emitting diodes are connected in parallel with a number of switch controllers. Under the control of a switching voltage comparing unit, a number of operation modes are provided, so as to open and light the light emitting diode lighting sections of different numbers. Each switch controller is respectively connected in parallel with a corresponding light emitting diode lighting section. The switching voltage comparing unit generates a transmission signal which is transmitted from one to another and controls a number of switch controller. Each switch controller is connected between the positive end of the corresponding light emitting diode lighting section and the current controller. The switching voltage comparing unit generates two transmission signals which are transmitted from one to another and control a number of switch 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 of the illumination unit based on light-emitting diode that includes a plurality of segmentations.
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 devices.For example, the light-emitting diode of high brightness has been widely used in traffic lights, automobiles indicator lamp and stop lamp.
The electric current of light-emitting diode is similar to general general-purpose diode to voltage (IV) characteristic curve, when being added on the voltage of light-emitting diode and being less than the forward voltage of diode, only has very little electric current to pass through light-emitting diode.When voltage surpasses forward voltage, by the significantly increase of electric current of light-emitting diode.In general, in most of opereating specifications, the luminous intensity of the lighting device based on light-emitting diode is to be directly proportional with the electric current passing through, but not like this while operating in high electric current.Being generally the drive unit of lighting device based on light-emitting diode design, is all that a constant electric current is provided is main, to can send stable light and 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, form a lighting device.For example, United States Patent (USP) discloses a plurality of illumination units based on light-emitting diode for No. 6777891, and forming one can be by computer-controlled lamp string, and wherein each illumination unit forms a separately controllable node in lamp string.
The needed operating voltage of each lighting device, the forward voltage that normally depends on the light-emitting diode in illumination unit, in each illumination unit, there are how many light-emitting diodes, each illumination unit is how phase mutual connection joins, and each illumination unit is in lighting device, is the voltage how receiving 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 offer one or more illumination units based on light-emitting diode.Because need such a voltage conversion device, cause the lighting apparatus efficiency based on light-emitting diode to lower, cost up, is also difficult to reduce its volume.
United States Patent (USP) provides a device of controlling the light-emitting diode of series connection for No. 7781979.Wherein there are two or more light-emitting diodes to be connected in series.When applying voltage, the electric current light-emitting diode of flowing through of a series connection.Wherein have a light-emitting diode at least by the one or more controllable current paths of parallel connection, make current segment these controllable current paths of flowing through of series connection, to do not need voltage conversion device can use general more general high-voltage power supply.Therefore this device can be used as the alternating voltage of 120V or 240V.U.S. Patent Bulletin has disclosed the device that a plurality of light-emitting diode mutual connections is connected into a plurality of light-emitting diodes pipeline sections No. 2010/0308739, and a plurality of derailing switches a plurality of light-emitting diodes pipeline section mutual connections therewith, choose and control a certain light-emitting diodes pipeline section, it is connected from a light-emitting diode series current path and access or cut every separating.
Because the existing increasing illumination unit based on light-emitting diode is used on the lighting apparatus of high brightness, how to use existing AC power on wall, improve flexibly and effectively the utilance of light-emitting diode, and provide stability and high brightness, drive and the method for designing and the device that are connected most the illumination units based on light-emitting diode, formed a kind of indispensable demand.In addition, the control connection illumination unit based on light-emitting diode together how, makes the brightness of illumination can be according to different lighting requirements, or the variation of AC supply voltage, and different light illumination modes is provided, and is also very important.
Summary of the invention
The invention provides the efficient driving of a kind of energy based on light emitting diode illuminating apparatus, and according to the magnitude of voltage of the alternating voltage of input, to provide the drive unit of multiple modes of operation to create.In the present invention, the lighting device based on light-emitting diode is divided into a plurality of 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.
Main purpose of the present invention be to provide a kind of can be 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, thereby provide multiple modes of operation to the lighting device based on light-emitting diode.
Therefore, of the present invention first preferably implemented in example, and device of the present invention includes a plurality of on-off controllers under switched voltage comparative unit is controlled, and each on-off controller is in parallel with an illumination stage in a plurality of illumination stage based on light-emitting diode.Switched voltage comparative unit, according to input voltage value, is delivered to the plurality of on-off controller by several common signals, and these common signals can Resetting Switching controller, makes the switching over of on-off controller synchronous, and indication input voltage value is to rise or decline.
At first, preferably implement in example, each on-off controller, except receiving several common signals, also have an input to transmit signal to receive input, and an output transmits signal to send output.
At this, preferably implement the switched voltage comparative unit in example, first produce first and transmit signal, 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 opening or closing by selectivity along with input voltage.
At second of the present invention, preferably implement in example, device of the present invention also includes a plurality of on-off controllers under switched voltage comparative unit is controlled, 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, each on-off controller one end that anode of an illumination stage from a plurality of illumination stage based on light-emitting diode is linked current controller.
At second, preferably implement in example, switched voltage comparative unit, according to input voltage value, is delivered to the plurality of on-off controller by several common signals too.Yet each on-off controller, except receiving several common signals, each receives two input transmission signals sending here from former and later two on-off controllers to also have two inputs, and an output transmits signal to former and later two on-off controllers to send an output.
Preferably enforcement example is the same with first, second preferably implements the switched voltage comparative unit in example, also first produces first and transmits signal, is delivered to an input of first on-off controller, via the transmission of each on-off controller, arrive last on-off controller again.In addition, second preferably implements the switched voltage comparative unit in example, produces again a last signal that transmits, and is delivered to an input of last on-off controller, then forwards via each on-off controller, arrives first on-off controller.
Second, preferably implement in example, the plurality of illumination stage based on light-emitting diode, can be along with increasing gradually of input voltage value by according to the opening of order, or arrive after peak when input voltage value, along with input voltage value lowers and gradually by according to closing sequentially.
Below according to several preferred enforcement examples of the present invention, with reference to attached graphic detailed description, for those skilled in the art, read following according to the detailed description of several preferred enforcement examples of the present invention, refer again to attached graphicly, should very clearly understand the present invention.Accompanying drawing is for 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 light illumination mode that M kind is different
iN;
Fig. 2 shows according to the of the present invention first preferred example of implementing, for driving the circuit diagram of the lighting device of most the illumination stage based on light-emitting diode;
Fig. 3 shows take the waveform of the common signal that produces as input voltage through the alternating voltage of over commutation in the present invention;
Fig. 4 shows according to the circuit example of the of the present invention first on-off controller that preferably enforcement example designs;
Fig. 5 shows according to the circuit example of the of the present invention first switched voltage comparative unit that preferably enforcement example designs;
Fig. 6 shows according to the of the present invention first lighting device based on light-emitting diode that preferably enforcement example designs;
Fig. 7 shows according to the of the present invention second preferred example of implementing, for driving the circuit diagram of the lighting device of most the illumination stage based on light-emitting diode;
Fig. 8 shows according to the circuit example of the of the present invention second on-off controller that preferably enforcement example designs;
Fig. 9 shows according to the circuit example of the of the present invention second switched voltage comparative unit that preferably enforcement example designs;
Figure 10 shows according to the of the present invention second lighting device based on light-emitting diode that preferably enforcement example designs;
Figure 11 shows according to another circuit example of the of the present invention second switched voltage comparative unit that preferably enforcement example designs; And
Figure 12 shows the detailed circuit of the pattern differentiation voltage comparator in Figure 11.
Wherein, description of reference numerals is as follows:
100:101:102:10N: the illumination stage based on light-emitting diode
201:202:20N: on-off controller
301: switched voltage comparative unit
401: demand limiter
501: resistor
600:601:602:603:60N: the illumination stage based on 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: pattern is distinguished voltage comparator
3011:2011:2021:8011:8021:8031:9011:9012: transmit signal
Embodiment
As mentioned above, in order to improve the brightness of the lighting device based on light-emitting diode, most the illumination units that include more than one light-emitting diode are connected conventionally, to increase luminous intensity.Therefore lighting device, provides multiple possible light illumination mode, so that can, with different luminous intensity operations, be in demand.For reaching this object, the most direct method, is the illumination unit based on light-emitting diode to each, with each other derailing switch, control this illumination unit, it is serially connected in lighting device, or is walked around in short circuit mode, 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, with the method for segmentation, controls.This new method, by the illumination units based on light-emitting diode all in lighting device, is divided into most the illumination stage based on light-emitting diode, and each illumination stage includes the illumination unit of the light-emitting diode of more than one series connection.Under each light illumination mode, the illumination stage of some in lighting device based on light-emitting diode, can be controlled so as to mutual series connection, and other illumination stage is bypassed.For the purpose of simplifying the description, following example is supposed 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 to the magnitude of voltage V of the input power under the light illumination mode that M kind is different
iN.This input power is the alternating voltage through over commutation, and under every 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
iNin time T
iwith T
i+1between from V
ibe increased to V
i+1time, should operate in pattern-i by the lighting device based on 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, lighting device that should be based on light-emitting diode operate in pattern-M, and dropped to V when input voltage value
iwith V
i+1between time, operate in again pattern-i.Magnitude of voltage V
iwith V
i+1between difference be that pattern is distinguished voltage V
mdiff.
Fig. 2 has shown according to the of the present invention first preferred example of implementing, for driving the circuit diagram of the lighting device of most the illumination stage based on 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 has been controlled a plurality of on-off controllers 201,202 ..., 20N.Each illumination stage based on light-emitting diode has an anode and a negative terminal, and the illumination stage of each on-off controller and based on light-emitting diode is connected in parallel between this anode and negative terminal.
In the present invention, switched voltage comparative unit 301 is according to input voltage V
iNcarry out the switching over voltage of each operator scheme of comparison.Switched voltage comparative unit 301 produces several common signals and delivers to each on-off controller, and these signals comprise reset signal, up/down signal, and synchronizing signal.Reset signal is all on-off controllers 201,202 ..., 20N is reset to initial condition, and up/down signal shows input voltage V
iNbe to increase or reducing, synchronizing signal makes all on-off controllers 201,202 ..., 20N can synchronously switch.Fig. 3 has shown take the waveform of the common signal that produces as 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 and transmits signal, and sends an output and transmit signal to next on-off controller.As can be seen from Figure 2.Illumination stage 101 first on-off controller 201 in parallel with first based on light-emitting diode, receives the first transmission signal 3011 producing from switched voltage comparative unit 301.The first on-off controller 201 is sent and is transmitted signal 2011 to second switch controller 202.And second switch controller 202 is sent transmission signal 2021 again to next on-off controller, the rest may be inferred.In some applications, in the illumination stage based on light-emitting diode 101 topmost, do not need to be controlled, therefore do not need an on-off controller in parallel.In this case, switched voltage comparative unit 301 can be delivered to second on-off controller 202 in parallel of the illumination stage 102 based on light-emitting diode with second by the first transmission signal 3011 producing.
In the present invention, each on-off controller 201,202, ..., 20N is subject to the control of switched voltage comparative unit 301, and its illumination stage based on light-emitting diode being 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 being 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 in Fig. 2 is 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
iNin time T
iwith T
i+1between from V
ibe increased to V
i+1time, should operate in pattern-i by the lighting device based on light-emitting diode.The preferred enforcement example showing according to Fig. 2, on-off controller 201,202 ..., 20N is subject to the control of switched voltage comparative unit 301, can optionally the light-emitting diode unit in some or most the illumination stage based on light-emitting diode be opened to illumination.
For instance, in 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 all other illumination stage are closed.In 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 all other illumination stage are closed.As input voltage value V
iNbe increased to V
mwith V
iN (MAX)between time, switched voltage comparative unit 301 can be controlled 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 that one according to the of the present invention first on-off controller 201,202 that preferably enforcement example designs ..., the circuit example of 20N.It is in parallel with the corresponding illumination stage based on light-emitting diode that the circuit of on-off controller comprises a derailing switch 2001.On-off controller receives from switched voltage comparative unit 301 or is connected to the input that another on-off controller of front end sends and transmits signal P
in, also send an output simultaneously and transmit signal P
outgive another on-off controller that is connected to rear end.Switched voltage comparative unit 301 will be synchronous, reset, and the common signal such as up/down deliver to each on-off controller, make the logical circuit in on-off controller be produced output transmission signal P
out.On-off controller inside also produces a control signal that is used for opening or closing derailing switch 2001.
Fig. 5 shows that one according to the circuit example of the of the present invention first switched voltage comparative unit 301 that preferably enforcement example designs.Switched voltage comparative unit 301 includes most voltage comparators 3001.According to input voltage V
iNmagnitude of voltage, circuit in switched voltage comparative unit 301 produces first and transmits signal and shown synchronous of Fig. 3, resets, and the common signal such as up/down.
Fig. 6 shows that one according to the of the present invention first lighting device based on light-emitting diode that preferably enforcement example designs, and wherein includes four illumination stage based on light-emitting diode.Illumination stage 600 topmost one based on light-emitting diode contains one based on light-emitting diode, and other three the illumination stage 601-603 based on light-emitting diode distinctly has 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 deliver to each on-off controller 201-203, and the first transmission signal is delivered to on-off controller 201.On-off controller 201 is sent an output again and is transmitted signal to on-off controller 202, and 202 of on-off controllers are sent an output transmission signal to on-off controller 203.
According to the present invention, under different operator schemes, how to open or close some or all the illumination stage based on light-emitting diode, by the design of on-off controller, determined.With on-off controller shown in Fig. 4, the lighting device based on light-emitting diode in Fig. 6, can be controlled under eight kinds of patterns and operate, and one to eight light-emitting diode is opened to illumination.
At the lighting device based on light-emitting diode of Fig. 6, on-off controller 201-203 wherein, can form with the controller circuitry of Fig. 4 the up/down counter of three, to be controlled at the derailing switch 2001 in on-off controller.The up/down counting of this counter of three of transmission signal controlling of sending from switched voltage comparative unit 301, when on-off controller 201-203 is reset, because the derailing switch 2001 in all on-off controller 201-203, all by short circuit, is only opened illumination at the light-emitting diode of 600 li of illumination stage.
As input voltage V
iNincrease, and transmit signal through the transmission of on-off controller 201-203, the up/down counter of three being formed by on-off controller 201-203, can be in pattern-1, pattern-2, pattern-3, pattern-4, pattern-5, pattern-6, and pattern-7 time, output 011,101,001,110,010,100 and 000 switching signal, controls derailing switch 2001 in each on-off controller to open the light-emitting diode of varying number, thereby provides different operator scheme to the lighting device based on light-emitting diode.For instance, in pattern-3 time, the value of this up/down counter of three is 001, and on-off controller 201 and two positions of 202 are 0.Therefore,, except the light-emitting diode 600 li of illumination stage, at the light-emitting diode of illumination stage 601 and 602 li, also all open illumination.
Fig. 7 has shown according to the of the present invention second preferred example of implementing, for driving the circuit diagram of the lighting device of most the illumination stage based on light-emitting diode.At this, preferably implement in example, 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, from the anode of this illumination stage, be connected to the first end of current controller 401 with a corresponding on-off controller, and a switching voltage ratio a plurality of on-off controllers 801,802 have been controlled compared with unit 901, ..., 80N.
As can be seen from Figure 7, at this, preferably implement in example, each on-off controller connects all illumination stage based on light-emitting diode under the corresponding illumination stage based on light-emitting diode with parallel way.For instance, 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 in parallel with the illumination stage 103-10N based on light-emitting diode, and the rest may be inferred.
Preferably enforcement example is similar with of the present invention first, and switched voltage comparative unit 901 is according to input voltage V
iNcarry out the switching over voltage of each operator scheme of comparison.Switched voltage comparative unit 901 produces several common signals and delivers to each on-off controller, and these signals comprise reset signal, up/down signal, and synchronizing signal.Reset signal is all on-off controllers 801,802 ..., 80N is reset to initial condition, and up/down signal shows input voltage V
iNbe to increase or reducing, synchronizing signal makes all on-off controllers 801,802 ..., 80N can synchronously switch.
According to of the present invention second, preferably implement example, except first and last on-off controller, each on-off controller is all sent an output and is transmitted signal to former and later two on-off controllers, and each on-off controller also all receives the output of sending from former and later two on-off controllers and transmits signal.For instance, on-off controller 802 is sent output and is transmitted signal 8021 to on-off controller 801 and 803, and receives the output transmission signal 8011 of sending from on-off controller 801, and the output of sending from on-off controller 803 transmits signal 8031.
As can be seen from Figure 7, the first on-off controller 801 is the on-off controller of front end not, so it receives first transmission signal 9011 sending from switched voltage comparative unit 901.This preferred enforcement in example, last on-off controller 80N does not have the on-off controller of rear end yet, so its receives last the transmission signal 9012 sending from switched voltage comparative unit 901.
As previously mentioned, in some applications, in the illumination stage based on light-emitting diode 101 topmost, necessity of not controlling.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, the illumination stage of each in the present invention based on light-emitting diode 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.
Of the present invention second, preferably implement in example each on-off controller 801,802, ..., 80N is subject to the control of switched voltage comparative unit 901, and makes its illumination stage based on light-emitting diode being in parallel open illumination, maybe the illumination stage short circuit based on light-emitting diode being in parallel is walked around.For instance, if on-off controller 801 is controlled so as to short circuit, all illumination stage based on light-emitting diode are all walked around by short circuit.If on-off controller 802 is controlled so as to short circuit,, except first illumination stage based on light-emitting diode, other all illumination stage based on light-emitting diode is all walked around by short circuit, and the rest may be inferred.
Of the present invention second preferably implements the operation of example, also as shown in Figure 1, and as input voltage value V
iNin time T
iwith T
i+1between from V
ibe increased to V
i+1time, should operate in pattern-i by the lighting device based on light-emitting diode.Second preferred the implement example shown according to Fig. 7, in time T
1and T
2between, switched voltage comparative unit 901 can control switch controller 801, make to open illumination in the light-emitting diode unit of 101 li of the illumination stage based on light-emitting diode, and all other illumination stage 102,103, ..., 10N, is subject to on-off controller 802,803, ..., the control of 80N and closing.
In time T
2and T
3between, switched voltage comparative unit 901 can control switch controller 801 and 802, make to open illumination in the light-emitting diode unit of the illumination stage 101 based on light-emitting diode and 102 li, and all other illumination stage 103, ..., 10N, is subject to on-off controller 803, ..., the control of 80N and closing.
The second shown preferred enforcement in example of Fig. 7, each illumination stage based on light-emitting diode is opened illumination according to order, as input voltage value V
iNfrom 0, be increased to V
iN (MAX)time, illumination stage 101, illumination stage 102 ..., illumination stage 10N sequentially opens illumination.When input voltage value reaches the highest and while starting to reduce, each illumination stage based on light-emitting diode is also closed according to order.
Fig. 8 shows that one according to the of the present invention second on-off controller 801,802 that preferably enforcement example designs ..., the circuit example of 80N.It is in parallel with the corresponding illumination stage based on light-emitting diode that the circuit of on-off controller comprises a derailing switch 8001.On-off controller receives an input transmission signal P1 who sends from being connected to an on-off controller of front end
inand receive from being connected to another input that another on-off controller of rear end sends and transmit signal P2
in.Also send an output and transmit signal P simultaneously
outgive two on-off controllers that are connected to front and back end.Switched voltage comparative unit 901 will be synchronous, reset, and the common signal such as up/down deliver to each on-off controller, make the logical circuit in on-off controller be produced output transmission signal P
out.On-off controller inside also produces a control signal that is used for opening or closing derailing switch 8001.
Fig. 9 shows that one according to the circuit example of the of the present invention second switched voltage comparative unit 901 that preferably enforcement example designs.Switched voltage comparative unit 901 includes most voltage comparators 9001.According to input voltage V
iNmagnitude of voltage, circuit in switched voltage comparative unit 901 produces shown synchronous of 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 the last signal 9011,9012 that transmits to first and last two on-off controllers 801 and 80N.
Figure 10 shows that one according to the of the present invention second lighting device based on light-emitting diode that preferably enforcement example designs, and wherein includes four illumination stage based on light-emitting diode.Illumination stage 100 topmost one based on light-emitting diode does not have corresponding on-off controller.Three on-off controller 801-803 are respectively connected to the first end of current controller 401 since the anode of three corresponding illumination stage 101-103 based on light-emitting diode.
Switched voltage comparative unit 901 will be synchronous, reset, and the common signal such as up/down deliver to each on-off controller 801-803, and the first transmission signal 9011 be delivered to on-off controller 801 and finally transmit signal 9012 and deliver to on-off controller 803.On-off controller 801 is sent an output again and is transmitted signal 8011 to on-off controller 802,802 of on-off controllers are sent again an output and are transmitted signal 8021 to on-off controller 801 and 803, and on-off controller 803 is also sent an output transmission signal 8031 to on-off controller 802.
According to the of the present invention second switched voltage comparative unit 901 that preferably enforcement example designs, also can implement with the shown circuit example of Figure 11.In this circuit, switched voltage comparative unit 901 includes two voltage comparators 9001 and a pattern is distinguished voltage comparator 9002.Different from Fig. 9, the synchronizing signal in Figure 11 is distinguished voltage comparator 9002 by pattern and is produced according to replacement and up/down two common signals, rather than is produced by most voltage comparators 9001.
Figure 12 shows the detailed circuit of the pattern differentiation voltage comparator 9002 in Figure 11.Except replacement and up/down two common signals, by input voltage V
iNand the magnitude of voltage V deriving
x=α * V
iNfor the input of pattern differentiation voltage comparator 9002, wherein α is a scale factor that is less than 1.
According to the present invention, the light-emitting diode in the illumination stage based on light-emitting diode, be general reference all types of light-emitting diodes, as semiconductor light-emitting-diode and Organic Light Emitting Diode, these light-emitting diodes may be luminous at various frequency spectrums.Lighting device of the present invention, can comprise the illumination stage based on light-emitting diode of suitable hop count, and 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 equipment or the upper practical application of device.
Be more than the circuit example that on-off controller and switched voltage comparative unit are shown and illustrate, be just used for illustrating principle of the present invention.On-off controller and switched voltage comparative unit can design with equivalent circuit and reach the same function.Derailing switch in on-off controller is also to make a general reference generally to include the switch module that can suitably connect or cut out a circuit, and derailing switch can be mechanical or electric power type, can be also the semiconductor switching device of manufacturing with integrated circuit.
In a word, the invention provides a kind of drive unit, with most on-off controllers, control and drive the lighting device of a plurality of illumination unit's segmentations based on light-emitting diode, and by switched voltage comparative unit, produce several common signals and one or two and transmit signal and carry out control switch controller, make its illumination stage of corresponding light-emitting diode can be opened illumination or short circuit walk around, thereby multiple different operator scheme is provided.
Although above, only by several preferred enforcement examples, the present invention is described, yet those skilled in the art, can understand clearly, still has many flexible and modifications of not describing, all within not departing from following defined claim of the present invention.
Claims (25)
1. the drive unit of a majority based on a light-emitting diode illumination unit, is characterized in that, comprising:
A plurality of illumination stage serial connections based on light-emitting diode, each illumination stage in the plurality of illumination stage based on light-emitting diode has an anode, 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 a plurality of 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 a plurality of illumination stage based on light-emitting diode, its second end ground connection;
A plurality of on-off controllers, each on-off controller in the plurality of on-off controller is corresponding and in parallel with this illumination stage with an illumination stage in above-mentioned a plurality of illumination stage based on light-emitting diode separately, and receive an input and transmit signal, and generation one output transmits signal; And
One switches voltage ratio compared with unit, this switched voltage comparative unit receives above-mentioned input power, produce and send most common signals to each on-off controller of above-mentioned a plurality of on-off controllers, and produce first and transmit the input that signal usings as the first on-off controller of above-mentioned a plurality of on-off controllers and transmit signal;
Wherein in above-mentioned a plurality of on-off controller, except above-mentioned the first on-off controller, the input of each on-off controller transmits the output that signal immediately produces at the on-off controller of its front end and transmits signal.
2. device as claimed in claim 1, it is characterized in that, each on-off controller includes one and is controlled by its input transmission signal, and can be by the derailing switch of its corresponding illumination stage short circuit, and the output that produces of this on-off controller transmits, and signal transmits signal according to its input and an above-mentioned majority common signal produces.
3. device as claimed in claim 2, is characterized in that, above-mentioned a plurality of on-off controllers form the counter of a multidigit, and each on-off controller of take is wherein one, receives its input transmission signal and controls contained derailing switch in it.
4. device as claimed in claim 1, it is characterized in that, an above-mentioned majority common signal comprises a reset signal with the above-mentioned a plurality of on-off controller of resetting, one synchronizing signal is so that above-mentioned a plurality of on-off controller synchronously switches, and a up/down signal increases or lowers to show the magnitude of voltage of above-mentioned input power.
5. device as claimed in claim 1, is characterized in that, above-mentioned switched voltage comparative unit comprises most voltage comparators, produces above-mentioned first transmit signal and an above-mentioned majority common signal according to the magnitude of voltage of above-mentioned input power.
6. device as claimed in claim 1, is characterized in that, in above-mentioned a plurality of illumination stage based on light-emitting diode, the rarest illumination stage does not have on-off controller in parallel with it.
7. device as claimed in claim 1, is characterized in that, in above-mentioned a plurality of illumination stage based on light-emitting diode, the rarest illumination stage wherein quantity of the contained illumination unit based on light-emitting diode is different from other illumination stage.
8. device as claimed in claim 1, is characterized in that, in above-mentioned a plurality of on-off controllers, the circuit of the rarest on-off controller is different from other on-off controller.
9. device as claimed in claim 1, is characterized in that, above-mentioned current controller is a demand limiter.
10. device as claimed in claim 1, is characterized in that, above-mentioned current controller is a resistor.
11. devices as claimed in claim 1, it is characterized in that, above-mentioned a plurality of illumination stage based on light-emitting diode includes the first illumination stage, the second illumination stage, the 3rd illumination stage, and the 4th illumination stage, and wherein above-mentioned a plurality of on-off controller include three on-off controllers respectively with the second illumination stage, the 3rd illumination stage, and the 4th illumination stage is in parallel.
12. devices as claimed in claim 11, it is characterized in that, above-mentioned a plurality of on-off controller forms the counter of three, each on-off controller of take is wherein one, receive its input transmission signal and control contained derailing switch in it, make the corresponding illumination stage short circuit of each on-off controller, or connect with other illumination stage.
13. devices as claimed in claim 12, it is characterized in that, above-mentioned the first illumination stage comprises an illumination unit based on light-emitting diode, above-mentioned the second illumination stage comprises an illumination unit based on light-emitting diode, above-mentioned the 3rd illumination stage comprises two illumination units based on light-emitting diode, and above-mentioned the 4th illumination stage comprises four illumination units based on light-emitting diode.
14. devices as claimed in claim 13, is characterized in that, above-mentioned switched voltage comparative unit is controlled above-mentioned a plurality of on-off controllers, under different kind operator schemes, can make one to eight illumination unit based on light-emitting diode open illumination.
15. the drive unit of a majority based on a light-emitting diode illumination unit, is characterized in that, comprising:
A plurality of illumination stage serial connections based on light-emitting diode, each illumination stage in the plurality of illumination stage based on light-emitting diode has an anode, 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 a plurality of 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 a plurality of illumination stage based on light-emitting diode, its second end ground connection;
A plurality of on-off controllers, each on-off controller in the plurality of on-off controller is corresponding with an illumination stage in above-mentioned a plurality of illumination stage based on light-emitting diode separately, and each own first end is connected with the anode of this illumination stage, and there is the second end to be connected to the first end of above-mentioned current controller, and receive the first input and transmit signal, transmit signal with the second input, and produce an output transmission signal; And
One switches voltage ratio compared with unit, this switched voltage comparative unit receives above-mentioned input power, produce and send most common signals to each on-off controller of above-mentioned a plurality of on-off controllers, with produce first and transmit the first input that signal usings as the first on-off controller of above-mentioned a plurality of on-off controllers and transmit signal, and produce and finally transmit the second input that signal usings as last on-off controller of above-mentioned a plurality of on-off controllers and transmit signal;
Wherein in above-mentioned a plurality of on-off controller, except above-mentioned the first on-off controller, the first input of each on-off controller transmits the output that signal immediately produces at the on-off controller of its front end and transmits signal, and except above-mentioned last on-off controller, the second input of each on-off controller transmits the signal output that immediately on-off controller in its back-end produces and transmits signal.
16. devices as claimed in claim 15, it is characterized in that, each on-off controller includes one and is controlled by its first input transmission signal and the second input transmission signal, and can be by the derailing switch of its corresponding illumination stage short circuit, and the output that produces of this on-off controller transmits signal and according to its first input, transmits signal and produce with the second input transmission signal and an above-mentioned majority common signal.
17. devices as claimed in claim 15, it is characterized in that, an above-mentioned majority common signal comprises a reset signal with the above-mentioned a plurality of on-off controller of resetting, one synchronizing signal is so that above-mentioned a plurality of on-off controller synchronously switches, and a up/down signal increases or lowers to show the magnitude of voltage of above-mentioned input power.
18. devices as claimed in claim 17, it is characterized in that, above-mentioned switched voltage comparative unit comprises most voltage comparators, produces above-mentioned first transmit signal according to the magnitude of voltage of above-mentioned input power, above-mentioned the second input transmits signal, and an above-mentioned majority common signal.
19. devices as claimed in claim 17, it is characterized in that, above-mentioned switched voltage comparative unit comprises two voltage comparators and a pattern is distinguished voltage comparator, according to the magnitude of voltage of above-mentioned input power, produce above-mentioned first and transmit signal, above-mentioned the second input transmits signal, and an above-mentioned majority common signal.
20. device as claimed in claim 19, is characterized in that, above-mentioned pattern is distinguished a part of voltage that voltage comparator receives the magnitude of voltage of above-mentioned input power, above-mentioned reset signal, with above-mentioned up/down signal, and pattern differentiation voltage, above-mentioned synchronizing signal produced.
21. devices as claimed in claim 15, is characterized in that, in above-mentioned a plurality of illumination stage based on light-emitting diode, the rarest illumination stage does not have on-off controller in parallel with it.
22. devices as claimed in claim 15, is characterized in that, in above-mentioned a plurality of illumination stage based on light-emitting diode, the rarest illumination stage wherein quantity of the contained illumination unit based on light-emitting diode is different from other illumination stage.
23. device as claimed in claim 15, is characterized in that, in above-mentioned a plurality of on-off controllers, the circuit of the rarest on-off controller is different from other on-off controller.
24. devices as claimed in claim 15, is characterized in that, above-mentioned current controller is a demand limiter.
25. devices as claimed in claim 15, is characterized in that, above-mentioned current controller is a resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210371527.6A CN103716935B (en) | 2012-09-29 | 2012-09-29 | Based on the drive unit of a majority illumination unit of light-emitting diode |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210371527.6A CN103716935B (en) | 2012-09-29 | 2012-09-29 | Based on the drive unit of a majority illumination unit of light-emitting diode |
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| CN103716935A true CN103716935A (en) | 2014-04-09 |
| CN103716935B CN103716935B (en) | 2016-01-13 |
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Cited By (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 (5)
| 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 |
| US20120217887A1 (en) * | 2010-09-15 | 2012-08-30 | Chin-Feng Kang | 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 (5)
| 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 |
| US20120217887A1 (en) * | 2010-09-15 | 2012-08-30 | Chin-Feng Kang | Led lighting systems, led controllers and led control methods for a string of leds |
Cited By (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 |
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| CN103716935B (en) | 2016-01-13 |
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