CN106793325A - The driving method of lighting apparatus, LED drive circuit and LED illumination - Google Patents
The driving method of lighting apparatus, LED drive circuit and LED illumination Download PDFInfo
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- CN106793325A CN106793325A CN201710004791.9A CN201710004791A CN106793325A CN 106793325 A CN106793325 A CN 106793325A CN 201710004791 A CN201710004791 A CN 201710004791A CN 106793325 A CN106793325 A CN 106793325A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/40—Details of LED load circuits
- H05B45/44—Details of LED load circuits with an active control inside an LED matrix
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
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Abstract
The present invention provides the driving method of a kind of lighting apparatus, LED drive circuit and LED illumination, and lighting apparatus is electrically connected including the first controller with the first LED load, for the operating current of control input to the first LED load；Second controller is in parallel with the first LED load after being connected with the second LED load, second controller detects that the voltage and the first threshold built-in with it at connected detection unit two ends are compared, when the voltage at two ends in detection unit is more than the first threshold, second controller is operated in high-impedance state, and the second LED load does not work；When the voltage at detection unit two ends is less than first threshold, second controller is used to control the first controller to be input into the operating current of the second LED load.The present invention can arbitrarily arrange in pairs or groups prime light adjusting circuit, can be from main regulation colour temperature switching point and the adjustment degree of colour temperature, with good light modulation toning compatibility.
Description
Technical field
The invention belongs to technical field of LED illumination, it is related to a kind of control device, more particularly to lighting apparatus, LED to drive
The driving method of circuit and LED illumination.
Background technology
In field of LED illumination, light modulation color-temperature regulating is always focus of concern.So-called light modulation adjusts the bright of light source
Degree；So-called color-temperature regulating, is generically considered to adjust the color of light source, and colour temperature is the color and black matrix of source emissioning light in a certain temperature
The lower radiant light form and aspect of degree are while the temperature of black matrix, in black body radiation, as temperature is different, the color of light is different.Colour temperature
Different from brightness often to give people different impression, such as under high color temperature light source irradiation, brightness is not high, has given people one kind
Sombre atmosphere；Under low color temperature light sources irradiation, brightness is too high to have given people a kind of sultry sensation.As can be seen here, accurate adjustment
The brightness of light source and colour temperature, are conducive to improving the LED illumination competitiveness of product in market.
And existing market existing main flow light modulation technology of mix colors, it is high to output parameter requirement, it is impossible to according to self-demand with
Meaning adjustment, to realize different light modulations toning effects.And, effect is unsatisfactory.
Therefore, the driving method of lighting apparatus, LED drive circuit and LED illumination how is provided, to solve prior art
Middle main flow light modulation technology of mix colors is high to output parameter requirement, and cannot arbitrarily adjust the defect such as photochromic according to their needs, in fact
As practitioner in the art's technical problem urgently to be resolved hurrily.
The content of the invention
The shortcoming of prior art, electricity is driven it is an object of the invention to provide a kind of lighting apparatus, LED in view of the above
Road and the driving method of LED illumination, it is high to output parameter requirement for solving main flow light modulation technology of mix colors in the prior art, and
Photochromic problem cannot be arbitrarily adjusted according to their needs.
In order to achieve the above objects and other related objects, one aspect of the present invention provides a kind of lighting apparatus, including a LED
Load, the second LED load, the first controller, second controller；First controller is electrically connected with the first LED load, is used for
Control input to first LED load operating current；The second controller connected with the second LED load after with first
LED load is in parallel, wherein the second controller detects the voltage at connected detection unit two ends and built-in with it the
One threshold value is compared, and when the voltage at two ends in detection unit is more than the first threshold, second controller is operated in high resistant
State, the second LED load does not work；When the voltage at detection unit two ends is less than the first threshold, the second controller is used
It is input into the operating current of second LED load in first controller is controlled.
In one embodiment of the invention, second controller is controlled by the output voltage and second for detecting the first controller
The built-in Second Threshold of device is compared, when the output voltage of the first controller is more than or equal to Second Threshold, second control
Device processed does not work, and the colour temperature of the lighting apparatus is the colour temperature of first LED load；When the output voltage of the first controller is big
When equal to Second Threshold, and when the voltage at detection unit two ends is less than the first threshold, the second controller is used for
The first controller is controlled to be input into the operating current of second LED load, the colour temperature of the lighting apparatus is a LED
The colour temperature of the colour temperature of load and the second LED load.
In one embodiment of the invention, the lighting apparatus further includes light modulator；Light modulator, with alternating current or
Direct current is electrically connected, for controlling first controller to be input into first LED load by adjusting light modulation angle
Operating current；Wherein, light modulation angle is smaller, is input into smaller to the operating current of first LED load.
In one embodiment of the invention, when the light modulator is from maximum dimmer angular adjustment to the first predetermined angular,
First controller is exported to the operating current of first LED load and reduced therewith, and the second controller is according to detection
The voltage at unit two ends is gradually reduced, until when being less than first threshold, the colour temperature for adjusting the lighting apparatus is the first LED load
Colour temperature add the second LED load colour temperature colour mixture colour temperature；Wherein, the colour temperature of first LED load is negative different from the 2nd LED
The colour temperature of load.
In one embodiment of the invention, when the light modulation angle of the light modulator is less than the second predetermined angular, and when the
When the output voltage that two controllers detect the first controller is more than or equal to Second Threshold, first LED load does not work, institute
State second controller for control the first controller be input into the operating current of the second LED load, the colour temperature of the lighting apparatus
It is the colour temperature of second LED load.
In one embodiment of the invention, first controller is LED linear constant-flow driver.
In one embodiment of the invention, the lighting apparatus further includes first resistor, the one of the first resistor
End is connected with the negative output terminal of first controller, one end phase of the other end of the first resistor and the first LED load
Connection, the size of first predetermined angular is adjusted by setting the resistance of first resistor, and the resistance of the first resistor is got over
Greatly, the first predetermined angular is smaller.
In one embodiment of the invention, when the operating voltage of the first LED load is big with the operating voltage of the second LED load
When equal to a threshold pressure differential, second resistance can be set between the second LED load and second controller；Wherein, described
One end of two resistance is connected with the input of the second controller, and the other end of the second resistance is negative with the 2nd LED
One end of load is connected；The threshold pressure differential is set according to practical application.
In one embodiment of the invention, the detection unit is 3rd resistor；One end of the 3rd resistor with it is described
Second controller is connected, and the other end of the 3rd resistor is connected with the other end of the first resistor, the 2nd LED
One end of load is connected with the input of second controller, the other end of second LED load and first controller
Positive output end be connected.
In one embodiment of the invention, second controller is by the second LED load or the second LED load and the second electricity
The output voltage of resistance the first controller of detection.
In one embodiment of the invention, the second controller also includes earth terminal, the earth terminal and described first
One end of resistance is connected.
Another aspect of the present invention provides a kind of lighting apparatus, including multiple LED loads, multiple controllers, wherein, it is multiple
LED load includes the first LED load, the second LED load ..., M LED loads；Multiple controllers include the first controller, the
Two controllers ..., M controllers, M is the positive integer more than 2；First controller is electrically connected with the first LED load, is used for
Control input to first LED load operating current；The second controller ..., M controllers respectively with the 2nd LED
Load ..., M LED loads correspond electrical connection, negative to the 2nd LED for controlling the first controller to be input into respectively
Carry ..., the operating current of M LED loads；Wherein, in addition to the first controller other each controllers pass through to detect and it
The voltage and the first threshold built-in with it at the detection unit two ends of connection are compared, when the voltage at detection unit two ends is more than
During the first threshold, described other each controllers in addition to the first controller are operated in high-impedance state, are connected electrically
LED load does not work；When the voltage at detection unit two ends is less than the first threshold, the controller second controller ...,
M controllers control respectively first controller be input into the second controller ..., M controllers electrically connect one by one
The second LED load ..., the operating current of M LED loads.
Another aspect of the invention provides a kind of LED drive circuit, and LED drive circuit is electrically connected with multiple LED loads, multiple
LED load include the first LED load, the second LED load ..., M LED loads, M is the positive integer more than 2；The LED drives
Dynamic circuit includes multiple controllers, the first controller, second controller ..., M controllers；First controller and first
LED load is electrically connected, for the operating current of control input to first LED load；The second controller ..., M controls
Device processed respectively with the second LED load ..., M LED loads correspond electrical connection, for control respectively the first controller be input into
To second LED load ..., the operating current of M LED loads；Wherein, in addition to the first controller other each controls
Device processed is compared by detecting the voltage and the first threshold built-in with it at the two ends in connected detection unit, works as inspection
When the voltage for surveying unit two ends is more than the first threshold, described other each controllers in addition to the first controller are operated in
High-impedance state, the LED load being connected electrically does not work；It is described when the voltage at detection unit two ends is less than the first threshold
Controller second controller ..., M controllers control respectively first controller be input into the second controller ...,
The second LED load ... that M controllers are electrically connected one by one, the operating current of M LED loads.
Last aspect of the invention provides a kind of driving method of LED illumination, comprises the following steps：1) the first controller is used
In the operating current of control input to first LED load；2) second controller detects connected detection unit two ends
Voltage and the first threshold built-in with it be compared, when detection unit two ends voltage be more than the first threshold when or
When the output voltage of the first controller is less than Second Threshold, second controller is operated in high-impedance state, the second LED load not work
Make；When the voltage in detection unit is less than the first threshold, and when the output voltage of the first controller is more than or equal to second
During threshold value, the second controller is used to control first controller to be input into the operating current of second LED load.
In one embodiment of the invention, step 1) further include：Described first is controlled by adjusting light modulation angle
Controller is input into the operating current of first LED load；Wherein, light modulation angle is smaller, input to first LED load
Operating current it is smaller.
In one embodiment of the invention, when the light modulator is from maximum dimmer angular adjustment to the first predetermined angular,
First controller is exported to the operating current of first LED load and reduced therewith, and the second controller is according to detection
The voltage at unit two ends is gradually decreased, until when being less than first threshold, the colour temperature for adjusting the lighting apparatus is the first LED load
Colour temperature add the second LED load colour temperature colour mixture colour temperature；Wherein, the colour temperature of first LED load is negative different from the 2nd LED
The colour temperature of load.
In one embodiment of the invention, when the light modulation angle of the light modulator is less than the second predetermined angular, and when second
When the output voltage that controller detects the first controller is more than or equal to Second Threshold, first LED load does not work, described
Second controller is used to control the first controller to be input into the operating current of the second LED load, and the colour temperature of the lighting apparatus is
The colour temperature of second LED load.
As described above, the driving method of lighting apparatus of the invention, LED drive circuit and LED illumination, has with following
Beneficial effect：
The driving method of lighting apparatus of the present invention, LED drive circuit and LED illumination selects linear electron element
Realize toning function, while the prime light adjusting circuit that can arbitrarily arrange in pairs or groups, can from main regulation colour temperature switching point and the adjustment degree of colour temperature,
With good light modulation toning compatibility.
Brief description of the drawings
Fig. 1 is shown as theory structure schematic diagram of the lighting apparatus of the invention in an embodiment.
Fig. 2 is shown as specific implementation circuit diagram of the lighting apparatus of the invention in an embodiment.
Fig. 3 is shown as theory structure schematic diagram of the lighting apparatus of the invention in another embodiment.
Fig. 4 is shown as schematic flow sheet of the driving method of LED illumination of the invention in an embodiment.
Component label instructions
1 lighting apparatus
11 first LED loads
12 second LED loads
13 first controllers
14 second controllers
15 light modulators
16 detection units
2 lighting apparatus
211 first LED loads
212 second LED loads
213 the 3rd LED loads
22 controllers
221 first controllers
222 second controllers
223 the 3rd controllers
242 detection units
244 detection units
23 light modulators
S1-S2 steps
Specific embodiment
Embodiments of the present invention are illustrated below by way of specific instantiation, those skilled in the art can be by this specification
Disclosed content understands other advantages of the invention and effect easily.The present invention can also be by specific realities different in addition
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under spirit of the invention.It should be noted that, in the case where not conflicting, following examples and implementation
Feature in example can be mutually combined.
It should be noted that the diagram provided in following examples only illustrates basic structure of the invention in a schematic way
Think, component count, shape and size when only display is with relevant component in the present invention rather than according to actual implementation in schema then
Draw, it is actual when the implementing kenel of each component, quantity and ratio can be a kind of random change, and its assembly layout kenel
It is likely more complexity.
Embodiment one
The present embodiment provides a kind of lighting apparatus, the first LED load, the second LED load, the first controller, the second control
Device；
First controller is electrically connected with the first LED load, for the work of control input to first LED load
Electric current；
The second controller is in parallel with the first LED load after being connected with the second LED load, wherein the second controller
Detect that the voltage and the first threshold built-in with it at connected detection unit two ends are compared, when detection unit two ends
When voltage is more than the first threshold, second controller is operated in high-impedance state, and the second LED load does not work；When detection unit two
When the voltage at end is less than the first threshold, the second controller is used to control first controller to be input into described second
The operating current of LED load.
The control device of the lighting apparatus provided the present embodiment below with reference to diagram is described in detail.This implementation
Control device described in example is applied to lighting apparatus, according to self-demand, arbitrarily adjusts output parameter, is set with adjusting the illumination
Standby colour temperature.Fig. 1 and Fig. 2 is referred to, theory structure schematic diagram and lighting apparatus of the lighting apparatus in an embodiment is shown as
Specific implementation circuit diagram in an embodiment.As shown in figure 1, including with the lighting apparatus 1, the first LED load 11, second
LED load 12, the first controller 13, second controller 14, light modulator 15 and detection unit 16.Wherein, the lighting apparatus 1
Described in the first LED load 11 colour temperature be A, for example, colour temperature A be cool colour or warm colour.
First controller 13 includes positive output end and negative output terminal, the positive output end of first controller 13 and institute
The one end (as shown in figure 1, the positive pole of one end of first LED load 11 for LED) for stating the first LED load 11 is connected,
The other end of the negative output terminal of first controller 13 and first LED load 11 is (as shown in figure 1, a LED is negative
It is the negative pole of LED to carry 11 other end) it is connected.In the present embodiment, first controller 13 for any collocation can
Control silicon light adjusting circuit (LED linear constant-flow driver).
Specifically, first controller 13 is also connected with the first resistor R1 of partial pressure effect together, i.e., with the first controller
13 negative output terminal is connected, and is input into for partial pressure to the operating current of first LED load 11.
The second controller 14 is in parallel with the first LED load 11 after being connected with the second LED load 12, wherein, described
Two controllers 14 detect that the voltage and the first threshold built-in with it at the two ends of connected detection unit 16 are compared, and work as inspection
When the voltage for surveying the two ends of unit 141 is more than the first threshold, second controller 14 is operated in high-impedance state, the second LED load 13
Do not work；When the voltage at the two ends of detection unit 141 is less than the first threshold, the second controller 14 is described for controlling
First controller 13 is input into the operating current of second LED load 12.
Output voltage and the built-in Second Threshold of second controller that second controller 14 passes through the first controller 13 of detection
It is compared, when the output voltage of the first controller 13 is more than or equal to Second Threshold, and the voltage at the two ends of detection unit 16 is big
When the first threshold, the second controller 13 does not work, and the colour temperature of the lighting apparatus is first LED load 11
Colour temperature；When the output voltage of the first controller 13 is more than or equal to Second Threshold, and when the voltage at the two ends of detection unit 16 is small
When the first threshold, the second controller 14 controls the first controller 13 to be input into the work of second LED load 12
Make electric current, the colour temperature of the lighting apparatus is the colour temperature of first LED load 11 plus the colour temperature of the second LED load 12.
The light modulator 15 electrically connected with first controller 13 is used to control described first by adjusting light modulation angle
Controller is input into the operating current of first LED load 11；Wherein, light modulation angle is smaller, and input is negative to a LED
The operating current of load is smaller.The light modulator 15 1 controls the thyristor regulating optical circuit to be input into institute by adjusting light modulation angle
State the work electricity of the first LED load 12.
When the light modulator 15 is from maximum dimmer angular adjustment to the first predetermined angular, first controller export to
The operating current of first LED load is reduced therewith, and the second controller controls to supply according to the voltage at detection unit two ends
The operating current of second LED load is gradually reduced to adjust the color that the colour temperature of the lighting apparatus is the first LED load 11
The colour mixture colour temperature of the colour temperature of temperature plus the second LED load 12；Wherein, the colour temperature of first LED load 11 is negative different from the 2nd LED
Carry 12 colour temperature.When the light modulation angle of the light modulator 15 is less than the second predetermined angular, and when second controller detects the
When the output voltage of one controller is more than Second Threshold, first LED load 11 is not worked, and the second controller 14 is controlled
First controller 13 is input into the operating current of the second LED load 12, and the colour temperature of the lighting apparatus is second LED load
Colour temperature.Described second determines angle determines that pressure difference is bigger, the second predetermined angle according to the second load with the voltage difference of the first load
Degree is bigger.When the light modulation angle of the light modulator is less than the second predetermined angular, and when second controller detects the first control
When the output voltage of device is less than Second Threshold, first LED load 11, the second LED load 12 do not work.In the present embodiment
In, colour temperature be the first LED load colour temperature what between the first LED load colour temperature and the second LED load colour temperature switching be due to the
One threshold value causes.Colour temperature switching between the first LED load colour temperature and the second LED load colour temperature and no color temperature output is due to the
Two threshold values cause.
Second controller detects the defeated of the first controller by the second LED load or the second LED load and second resistance
Go out voltage
In the present embodiment, the detection unit being connected on the second controller 15 is set to 3rd resistor R3.
When the pressure difference between second LED load 12 and first LED load 11 is more than or equal to a threshold pressure differential (institute
Threshold pressure differential is stated to be set according to practical application) when, by the input in second LED load 12 and second controller 14
One is set between end is used to share the second resistance R2 of voltage.When LED2 is more too small than LED1, such as the operating voltage of LED1
Be 80V, the operating voltage of LED2 is 70V or so during perfect condition, but, due to user to colour temperature incorporation time and depth not
With requirement, it is possible to which the voltage of LED2 can need to share voltage to 30V is arranged on by second resistance R2.When the 2nd LED is negative
Carry the pressure difference very little between 12 and first LED load 11, then by second LED load 12 and second controller 14
Input between short circuit set.
Specific component connection is as shown in Fig. 2 one end of the first resistor R1 is negative with first controller 13
Output end is connected, and the other end of the first resistor R1 is connected with one end of the first LED load 11, and a LED bears
The other end for carrying 11 is connected with the positive output end of first controller 13；One end of the second resistance R3 and described second
Output end (CS ends) the end connection of controller 14, one end of the other end of the second resistance R3 and second LED load 13
(as shown in Fig. 2 one end of second LED load 13 for LED negative pole) be connected, second LED load 13 it is another
One end (as shown in Fig. 2 the positive pole of the other end of second LED load 12 for LED) is with first controller 13 just
Output end is connected.The earth terminal GND of the second controller 14 is connected with the other end of the first resistor R1.Described
One end of two resistance R2 is connected with the input Drain of the second controller 14, the other end of the 3rd resistor R3 and institute
The one end (as shown in Fig. 2 the negative pole of one end of second LED load 13 for LED) for stating the second LED load 13 is connected.
Embodiment two
The present embodiment also provides a kind of lighting apparatus 2, refers to Fig. 3, and another implementation method for being shown as lighting apparatus is shown
It is intended to.The lighting apparatus 2 include multiple LED loads 21 (including the first LED load 211, the second LED load 212 ..., M
LED load 21M, M more than or equal to 3), multiple controllers 23.The multiple controller 22 includes that the first controller 221, second is controlled
Device processed 222, M controllers 22M.First controller 221, second controller 222 ..., M controllers 22M respectively with a LED
The 211, second LED load 212 of load ..., M LED loads 21M electrically connects one by one.As shown in figure 3, with M etc. in the present embodiment
As a example by 3.Wherein, first controller 221 for being electrically connected with the first LED load 211 is used for control input to described first
The operating current of LED load 211；First controller 221, second controller 222, the 3rd controller 223 are respectively used to control
One controller is input into the operating current of the multiple LED load.Wherein, in addition to the first controller 221 other each controls
Device processed, i.e. second controller 222, the 3rd controller 223 by detect its connect detection unit, (i.e. with second controller 222
Connection detection unit 242 and the 3rd controller 223 connection detection unit 243) on voltage and first threshold built-in with it
Value is compared, when the voltage in detection unit 242 and detection unit 243 is more than the first threshold, second control
Device 222, the 3rd controller 223 are operated in high-impedance state, and the LED load being connected electrically does not work；When detection unit 242 and detection
When the voltage at the two ends of unit 243 is less than the first threshold, the control of the second controller 222 and the 3rd 223 is used to control institute
The first controller 221 is stated to be input into second LED load being electrically connected with the control of second controller 222 and the 3rd 223
With the operating current of the 3rd LED load.
The light modulator 23 electrically connected with first controller 22 is used to control described first by adjusting light modulation angle
Controller is input into the operating current of first LED load；Wherein, light modulation angle is smaller, input to first LED load
Operating current it is smaller.The light modulator 23 controls the thyristor regulating optical circuit to be input into institute for one by adjusting light modulation angle
State the light modulator of the operating voltage of the first LED load.
When the light modulator 23 is from maximum dimmer angular adjustment to the first predetermined angular, first controller export to
The operating current voltage of first LED load is reduced therewith, and the second controller and/or the 3rd controller are single according to detection
The voltage control at first two ends is gradually decreased for the operating current of second LED load and/or the 3rd LED load, until being less than
First threshold adjusts the colour temperature plus the second LED load and/or the 3rd LED that the colour temperature of the lighting apparatus is the first LED load
The colour mixture colour temperature of the colour temperature of load；Wherein, the colour temperature of first LED load is different from the second LED load and/or the 3rd LED
The colour temperature of load.When the light modulation angle of the light modulator is less than the second predetermined angular, and when second controller and/or the 3rd control
When the output voltage that device processed detects the first controller is more than or equal to Second Threshold, first LED load does not work, and described the
Two controllers and/or the 3rd controller are used to controlling the first controller to be input into the second LED load and/or the 3rd LED load
Operating current, the colour temperature of the lighting apparatus is the colour temperature of second LED load and/or the 3rd LED load.Described second determines
Angle determines that pressure difference is bigger according to the second LED load and/or the 3rd LED load with the voltage difference of the first load, and second makes a reservation for
Angle is bigger.When the light modulation angle of the light modulator is less than the second predetermined angular, and when second controller and/or the 3rd control
When the output voltage that device detects the first controller is less than Second Threshold, first LED load, the second LED load, the 3rd
LED load does not work.
Second controller detects the defeated of the first controller by the second LED load or the second LED load and second resistance
Go out voltage.
The present embodiment also provides a kind of LED drive circuit, is applied to include multiple LED load (the first LED loads, second
LED load ..., M LED loads, M is more than or equal in lighting apparatus 3).The LED drive circuit includes multiple controllers
(the first controller, second controller ..., M controllers).First controller is electrically connected with the first LED load, for controlling
System is input into the operating current of first LED load；The multiple controller respectively with addition to first LED load
Multiple LED loads are electrically connected one by one, for controlling the first controller to be input into the operating current of the multiple LED load respectively；
Wherein, in addition to the first controller other each controllers by detect connected detection unit two ends voltage and with
Its built-in first threshold is compared, described when the voltage at detection unit two ends is more than the first threshold, except the first control
Other each controller (second controller ..., M controllers) beyond device processed is operated in high-impedance state, the LED being connected electrically
Load does not work；When the voltage at detection unit two ends is less than the first threshold, the controller is used to control described first
Controller is input into the operating current of the LED load being electrically connected with the controller.
Embodiment three
The present embodiment also provides a kind of driving method of LED illumination, refers to Fig. 4, is shown as the driving method of LED illumination
Schematic flow sheet in an embodiment.As shown in figure 4, the driving method of the LED illumination comprises the following steps：
S1, the operating current of the first controller control input to first LED load.In the present embodiment, by adjusting
The dimmer for light control angle that section is connected with first controller is negative to a LED to control first controller to be input into
The operating current of load；Wherein, light modulation angle is smaller, is input into smaller to the operating current of first LED load.When the light modulation
When device is from maximum dimmer angular adjustment to the first predetermined angular, first controller is exported to the work of first LED load
Make electric current to reduce therewith, the second controller supplies the work of second LED load according to the control of the voltage at detection unit two ends
Gradually decreased as electric current, until when being less than first threshold, with the colour temperature that the colour temperature for adjusting the lighting apparatus is the first LED load
Plus second LED load colour temperature colour mixture colour temperature；Wherein, the colour temperature of first LED load is different from the color of the second LED load
Temperature.
In the present embodiment, when the light modulation angle of the light modulator is less than the second predetermined angular, and second controller is worked as
When the output voltage for detecting the first controller is more than or equal to Second Threshold, first LED load does not work, second control
Device processed is used to control the first controller to be input into the operating current of the second LED load, and the colour temperature of the lighting apparatus is described the
The colour temperature of two LED loads.
When the light modulation angle of the light modulator is less than the second predetermined angular, and when second controller detects the first control
When the output voltage of device is less than Second Threshold, first LED load, the second LED load do not work.
S2, second controller detects that the voltage and the first threshold built-in with it at connected detection unit two ends are carried out
Compare, when the voltage at detection unit two ends is less than the first threshold or when the output voltage of the first controller is more than or equal to
During Second Threshold, second controller is operated in high-impedance state, and the second LED load does not work；When the voltage at detection unit two ends is less than
During the first threshold, and when the output voltage of the first controller is more than or equal to Second Threshold, the second controller is used for
First controller is controlled to be input into the operating current of second LED load.
In sum, the driving method of lighting apparatus of the present invention, LED drive circuit and LED illumination is from linear
Electronic component realizes toning function, while the prime light adjusting circuit that can arbitrarily arrange in pairs or groups, can be from main regulation colour temperature switching point and colour temperature
Adjustment degree, with good light modulation toning compatibility.So, the present invention effectively overcomes various shortcoming of the prior art and has
High industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
The personage for knowing this technology all can carry out modifications and changes under without prejudice to spirit and scope of the invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete with institute under technological thought without departing from disclosed spirit such as
Into all equivalent modifications or change, should be covered by claim of the invention.
Claims (17)
1. a kind of lighting apparatus, it is characterised in that including the first LED load, the second LED load, the first controller, the second control
Device；
First controller is electrically connected with the first LED load, for the work electricity of control input to first LED load
Stream；The second controller is in parallel with the first LED load after being connected with the second LED load, wherein the second controller is detected
The voltage and the first threshold built-in with it at connected detection unit two ends are compared, when the voltage at detection unit two ends
During more than the first threshold, second controller is operated in high-impedance state, and the second LED load does not work；When detection unit two ends
When voltage is less than the first threshold, the second controller is used to control first controller to be input into the 2nd LED
The operating current of load.
2. lighting apparatus according to claim 1, it is characterised in that
Second controller is compared by detecting the output voltage of the first controller Second Threshold built-in with second controller,
When the first controller output voltage be more than or equal to Second Threshold when, and detection unit two ends voltage be more than first threshold when,
The second controller does not work, and the colour temperature of the lighting apparatus is the colour temperature of first LED load；When the first controller
When output voltage is more than or equal to Second Threshold, and when the voltage at detection unit two ends is less than the first threshold, described second
Controller is used to control the first controller to be input into the operating current of second LED load, and the colour temperature of the lighting apparatus is
The colour temperature of first LED load and the colour temperature of the second LED load.
3. lighting apparatus according to claim 1, it is characterised in that the lighting apparatus further includes light modulator；
Light modulator, electrically connects with alternating current or direct current, for controlling first controller by adjusting light modulation angle
It is input into the operating current of first LED load；Wherein, light modulation angle is smaller, the work of input to first LED load
Electric current is smaller.
4. lighting apparatus according to claim 3, it is characterised in that：When the light modulator from maximum dimmer angular adjustment to
During the first predetermined angular, first controller is exported to the operating current of first LED load and reduced therewith, and described second
Controller is gradually reduced according to the voltage at detection unit two ends, until when being less than first threshold, adjusting the color of the lighting apparatus
Temperature adds the colour mixture colour temperature of the colour temperature of the second LED load for the colour temperature of the first LED load；Wherein, the colour temperature of first LED load
Different from the colour temperature of the second LED load.
5. the control device of lighting apparatus according to claim 3, it is characterised in that：When the light modulation angle of the light modulator
During less than the second predetermined angular, and when the output voltage that second controller detects the first controller is more than or equal to Second Threshold
When, first LED load does not work, and the second controller is used to control the first controller to be input into the second LED load
Operating current, the colour temperature of the lighting apparatus is the colour temperature of second LED load.
6. lighting apparatus according to claim 1, it is characterised in that：First controller is that LED linear constant current drives
Device.
7. lighting apparatus according to claim 4, it is characterised in that the lighting apparatus further includes first resistor,
One end of the first resistor is connected with the negative output terminal of first controller, the other end of the first resistor and first
One end of LED load is connected, and the size of first predetermined angular, described are adjusted by setting the resistance of first resistor
The resistance of one resistance is bigger, and the first predetermined angular is smaller.
8. lighting apparatus according to claim 4, it is characterised in that：When the operating voltage and the 2nd LED of the first LED load
When the operating voltage of load is more than or equal to a threshold pressure differential, second can be set between the second LED load and second controller
Resistance；Wherein, one end of the second resistance is connected with the input of the second controller, the other end of the second resistance
One end with second LED load is connected；The threshold pressure differential is set according to practical application.
9. lighting apparatus according to claim 1, it is characterised in that：The detection unit is 3rd resistor；Described 3rd
One end of resistance is connected with the second controller, the other end phase of the other end of the 3rd resistor and the first resistor
Connection, one end of second LED load is connected with the input of second controller, the other end of second LED load
Positive output end with first controller is connected.
10. lighting apparatus according to claim 10, it is characterised in that：Second controller by the second LED load or
Second LED load and second resistance detect the output voltage of the first controller.
11. lighting apparatus according to claim 6, it is characterised in that：The second controller also includes earth terminal, described
Earth terminal is connected with one end of the first resistor.
12. a kind of lighting apparatus, it is characterised in that including multiple LED loads, multiple controllers, wherein, multiple LED load bags
Include the first LED load, the second LED load ..., M LED loads；Multiple controllers include the first controller, the second control
Device ..., M controllers, M is the positive integer more than 2；
First controller is electrically connected with the first LED load, for the work electricity of control input to first LED load
Stream；
The second controller ..., M controllers respectively with the second LED load ..., M LED loads correspond be electrically connected
Connect, for controlling the first controller to be input into second LED load ..., the operating current of M LED loads respectively；
Wherein, in addition to the first controller other each controllers are by detecting the voltage at connected detection unit two ends
It is described to remove the when the voltage at detection unit two ends is more than the first threshold and the first threshold built-in with it is compared
Other each controllers beyond one controller are operated in high-impedance state, and the LED load being connected electrically does not work；Work as detection unit
When the voltage at two ends is less than the first threshold, the controller second controller ..., M controllers control described the respectively
One controller is input into the second LED load ... electrically connected one by one with the second controller ..., M controllers, M LED
The operating current of load.
13. a kind of LED drive circuits, it is characterised in that LED drive circuit is electrically connected with multiple LED loads, multiple LED loads
Including the first LED load, the second LED load ..., M LED loads, M is the positive integer more than 2；The LED drive circuit bag
Include multiple controllers, the first controller, second controller ..., M controllers；
First controller is electrically connected with the first LED load, for the work electricity of control input to first LED load
Stream；
The second controller ..., M controllers respectively with the second LED load ..., M LED loads correspond be electrically connected
Connect, for controlling the first controller to be input into second LED load ..., the operating current of M LED loads respectively；
Wherein, in addition to the first controller other each controllers are by detecting the voltage at connected detection unit two ends
It is described to remove the when the voltage at detection unit two ends is more than the first threshold and the first threshold built-in with it is compared
Other each controllers beyond one controller are operated in high-impedance state, and the LED load being connected electrically does not work；Work as detection unit
When the voltage at two ends is less than the first threshold, the controller second controller ..., M controllers control described the respectively
One controller is input into the second LED load ... electrically connected one by one with the second controller ..., M controllers, M LED
The operating current of load.
14. a kind of driving methods of LED illumination, it is characterised in that comprise the following steps：
1) the first controller is used for the operating current of control input to first LED load；
2) second controller detects that the voltage and the first threshold built-in with it at connected detection unit two ends are compared,
When the voltage at detection unit two ends is more than the first threshold or when the output voltage of the first controller is less than Second Threshold
When, second controller is operated in high-impedance state, and the second LED load does not work；When the voltage at detection unit two ends is less than described first
During threshold value, and when the output voltage of the first controller is more than or equal to Second Threshold, the second controller is described for controlling
First controller is input into the operating current of second LED load.
The driving method of 15. LED illuminations according to claim 14, it is characterised in that：Step 1) further include：
First controller is controlled to be input into the operating current of first LED load by adjusting light modulation angle；Wherein,
Light modulation angle is smaller, is input into smaller to the operating current of first LED load.
The driving method of 16. LED illuminations according to claim 16, it is characterised in that：When the light modulator from maximum
When light modulation angular adjustment is to the first predetermined angular, first controller export operating current to first LED load with
Reduction, the second controller gradually decreases according to the voltage at detection unit two ends, until during less than first threshold, adjusting institute
The colour temperature for stating lighting apparatus is the colour mixture colour temperature of the colour temperature of the colour temperature plus the second LED load of the first LED load；Wherein, described
The colour temperature of one LED load is different from the colour temperature of the second LED load.
The driving method of 17. LED illuminations according to claim 16, it is characterised in that：The light modulation angle of the light modulator
When degree is less than the second predetermined angular, and when the output voltage that second controller detects the first controller is more than or equal to Second Threshold
When, first LED load does not work, and the second controller is used to control the first controller to be input into the second LED load
Operating current, the colour temperature of the lighting apparatus is the colour temperature of second LED load.
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| CN106793325B (en) | 2020-03-20 |
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