CN104936350A - Dimming method of LED light-emitting device - Google Patents
Dimming method of LED light-emitting device Download PDFInfo
- Publication number
- CN104936350A CN104936350A CN201510353103.0A CN201510353103A CN104936350A CN 104936350 A CN104936350 A CN 104936350A CN 201510353103 A CN201510353103 A CN 201510353103A CN 104936350 A CN104936350 A CN 104936350A
- Authority
- CN
- China
- Prior art keywords
- light source
- source module
- control signal
- power
- time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000003086 colorant Substances 0.000 claims abstract description 9
- 238000004891 communication Methods 0.000 claims description 6
- 230000007423 decrease Effects 0.000 abstract 2
- 238000002620 method output Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 13
- 239000002245 particle Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention relates to a dimming method of an LED light-emitting device. The dimming method is characterized in that the dimming method outputs a plurality of control signals corresponding to a plurality of light source modules with different colors respectively through a time division multiplexing module and controls that at most one control signal in the control signals is at a high level at any time, so that at most one path outputs a drive voltage or current so as to drive the corresponding light source module to emit light. Thus, electric energy provided by a power adapter is distributed to different branch circuits for use at different time periods in sequence, the problem of power adapter overload caused by power peak value overlapping is solved, and thus the power configuration of the power adapter can be reduced to be 1/3 of that in the prior art. The decrease of the power of the power adapter means the decreases of the size and weight of the power adapter, and thus the cost of an LED lamp is reduced.
Description
The invention relates to a divisional application of an LED lamp color adjusting driver, wherein the application number is 201110272764.2, the application date is 2011, 9, 15 and the name of the divisional application is disclosed.
Technical Field
The invention belongs to the technical field of LED lamp control, and particularly relates to a dimming method of an LED light-emitting device.
Background
As a new light source with high benefit, the LED lamp is widely used in the fields of business, industry, roads, advertising lamp boxes, etc. due to its advantages of long service life, low energy consumption, energy saving and environmental protection.
With the wide application of LED lamps, people have higher and higher requirements on LED lamps, and multiple control modes from single brightness adjustment to color adjustment are formed. The control modes adopted for color adjustment mainly include linear dimming in an analog mode and PWM (Pulse Width Modulation) dimming in a digital mode.
The driving aspect of the color adjustment of the LED lamp is not particularly limited, and the LED lamp mainly aims at realizing the function, and generally adopts a common anode or common cathode structure, and uses a constant voltage mode to supply power, and uses a PWM signal to control the color change. However, for the application occasions with fixed light source structures, the color change of the light source is mainly controlled by PWM in a driving mode of independent constant current of each group.
For the LED lamp with color modulation controlled by PWM signal, in order to avoid the problem of overload of the power converter caused by the superposition of power peak values, the sum of the maximum powers of the LED light source modules with three colors when they work alone is usually used as the power of the power converter of the LED lamp. However, the maximum value of the actual power consumption of the LED lamp is only about one third of the power converter, so that the power of the power converter is configured based on the sum of the powers of the three color light source modules when operating alone, which results in the waste of the power converter, and at the same time, the power converter has a large volume, a heavy weight, and a relatively high cost. Moreover, in general, the power converter is installed in the lamp housing, and the power converter occupies most space of the lamp, so that the whole LED lamp has large volume, weight and cost. Especially for outdoor LED lamps (such as street lamps), the increase of the volume and weight of the lamp has a great influence on the cost of the product. Because, not only is more material and human resources spent in the manufacturing process, but also the associated products involved in the later installation process, such as lamp posts used as support fixtures, are extremely demanding in terms of their strength properties, otherwise LED fixtures of such weight and volume cannot be supported. In addition, in coastal areas where typhoons frequently occur, the LED lamp has great potential safety hazards due to overlarge volume and weight. Therefore, how to obtain a power converter with small size, light weight and low cost and how to utilize the power converter to achieve the purpose of dimming an LED lamp is a problem to be solved. Chinese patent CN 101196276a discloses a program-controlled color-mixing LED projector, which aims to solve the technical problem of how to adjust the output of specific color and brightness of LED lamp set by PWM pulse width modulation signal. Chinese patent CN 201515523U discloses a driving device for light emitting diode LED, and discloses that the problems of excessive instantaneous current and significant electromagnetic interference in the circuit caused by the traditional LED driving method are reduced by a "sectional lighting" method, so as to reduce the instantaneous current in the circuit and reduce the output power of the power supply. Chinese patent CN 102087834a discloses an LED driving circuit, which solves the technical problems: the method can reduce the structural cost and size of the scanning display. None of the above-mentioned references relate to the problem and related technical means of how to obtain a compact, lightweight, low-cost power converter and how to use the compact power converter to achieve dimming of LED lamps.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an LED lamp color adjusting driver which enables the power of a power converter to be equivalent to the maximum value of the actual power consumption of an LED lamp.
In order to achieve the above object, the present invention provides a color adjustment driver for an LED lamp, comprising:
the time division multiplexing control module is provided with three registers and a communication interface, the three registers are respectively used for storing the turn-on time of the red, green and blue light source modules, the communication interface is connected with the color modulation control circuit, receives the turn-on time data of the red, green and blue light source modules from the color modulation control circuit, and is used for adjusting and updating the turn-on time of the red, green and blue light source modules stored by the three registers to realize the color adjustment of the LED lamp; three paths of light source module control signals are output and respectively correspond to the control of three colors of red, green and blue;
in the control period, firstly changing the control signal of the light source module corresponding to the first color from low level to high level and maintaining the corresponding on-time, then changing the control signal of the light source module corresponding to the second color from low level to high level and maintaining the corresponding on-time after the control signal of the light source module corresponding to the first color is changed to low level, and finally changing the control signal of the light source module corresponding to the third color from low level to high level and maintaining the corresponding on-time after the control signal of the light source module corresponding to the second color is changed to low level;
the power output module outputs driving voltage or current to drive the corresponding light source module to emit light when the control signal of the light source module corresponding to a certain color is at a high level;
the time division multiplexing control module and the power output module are connected with a power converter, and the power converter provides a direct current power supply for the time division multiplexing control module and the power output module.
The purpose of the invention is realized as follows:
the LED lamp color adjusting driver divides the light source module control signals corresponding to three colors in time through the time division multiplexing control module, so that at most one of the light source module control signals is in a high level at any moment, the power output module outputs driving voltage or current at most one path to drive the corresponding light source module to emit light, and thus, the electric energy provided by the power converter is sequentially distributed to different branches for use at different time periods, the problem of power converter overload caused by power peak value superposition does not exist, and the power configuration of the power converter can be reduced to one third of the prior art. The reduction in power of the power converter means that both its volume and weight are reduced, thus saving the cost of the LED lamp.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a color adjusting driver of an LED lamp according to the present invention;
FIG. 2 is a schematic diagram of one embodiment of the time division multiplexing control module shown in FIG. 1;
FIG. 3 is a functional block diagram of one embodiment of the power output module shown in FIG. 1;
FIG. 4 is a functional block diagram of another embodiment of the power output module shown in FIG. 1;
FIG. 5 is a timing diagram of an embodiment of light source module control signals in different color states.
Detailed Description
The following description of the embodiments of the present invention is provided in order to better understand the present invention for those skilled in the art with reference to the accompanying drawings. It is to be expressly noted that in the following description, a detailed description of known functions and designs will be omitted when it may obscure the subject matter of the present invention.
Fig. 1 is a schematic diagram of an embodiment of a color adjusting driver of an LED lamp according to the present invention.
In the present embodiment, as shown in fig. 1, the LED lamp color adjusting driver 2 includes a time division multiplexing control module 201 and a power output module 202.
The time division multiplexing control module 201 has three light source module control signals PMW1, PMW2, and PMW3 output, which correspond to the control of three colors of red, green, and blue, respectively.
The power output module 202 outputs a driving voltage or current to drive the corresponding light source module to emit light when the control signal of the light source module corresponding to a certain color is at a high level. When the light source module control signal PMW1 is at a high level, it outputs a driving voltage or current to drive the red light source module to emit light; when the light source module control signal PMW2 is at a high level, it outputs a driving voltage or current to drive the green light source module to emit light; when the light source module control signal PMW3 is at a high level, it outputs a driving voltage or current to drive the blue light source module to emit light.
The time division multiplexing control module 201 and the power output module 202 are both connected to the power converter 1, and the power converter 1 provides a direct current power supply for the time division multiplexing control module 201 and the power output module 202. In the present embodiment, the power converter 1 includes an AC-DC converter 101 and a plug 102; the plug 102 is a single-phase three-terminal plug, includes a live wire terminal L, a ground terminal E, and a zero line terminal N, and is connected to a power grid through a plug power converter 1 to obtain an ac power supply. The AC-DC converter 101 converts AC power obtained from the power grid into DC power, and supplies the DC power to the time division multiplexing control module 201 and the power output module 202. The structure and principle of the power converter belong to the prior art, and are not described in detail herein.
Fig. 2 is a schematic diagram of an embodiment of the time division multiplexing control module shown in fig. 1.
In the embodiment, as shown in fig. 2, the time division multiplexing control module 201 includes a micro processing unit (MCU)2011 and a DC-DC converter 2012; the micro-processing unit 2011 has three registers R1-R3 and a communication Interface, and in this embodiment, the communication Interface is a DALI Interface (Digital addressable lighting Interface).
The three registers R1-R3 are respectively used for storing the turn-on time of the red, green and blue light source modules, the communication interface is connected with the color modulation control circuit, receives the turn-on time DATA DATA of the red, green and blue light source modules from the color modulation control circuit, and is used for adjusting and updating the turn-on time of the red, green and blue light source modules stored in the three registers R1-R3 to realize the color adjustment of the LED lamp.
In this embodiment, the power converter 1 only outputs one power Vdd, and since it needs to provide power for the power output module at the same time, and the voltage value of the power Vdd is high, it needs to be stepped down to meet the requirement of the power needed by the micro-processing unit 2011, and the DC-DC converter 2012 steps down the power Vdd and then outputs the power Vdd as the power of the micro-processing unit 2011.
Fig. 3 is a functional block diagram of one embodiment of the power output module shown in fig. 1.
In this embodiment, as shown in fig. 3, the power output module 202 includes three constant current drivers Q1 to Q3, each of the constant current drivers Q1 to Q3 has a PWM dimming interface, and when a certain light source module control signal is at a high level, the connected constant current driver outputs a driving current and drives the corresponding light source module to emit light. In addition, the constant current driver is a constant current power supply with open circuit protection.
In the control period T, the light source module control signal PWM1 corresponding to the first color, red in this embodiment, is first changed from low level to high level and maintained for the corresponding on-time T1, then, after the light source module control signal PWM1 corresponding to the first color, red, is changed to low level, the light source module control signal PWM2 corresponding to the second color, green in this embodiment, is changed from low level to high level and maintained for the corresponding on-time T2, and finally, after the light source module control signal corresponding to the second color, green, is changed to low level, the light source module control signal PWM3 corresponding to the third color, blue is changed from low level to high level and maintained for the corresponding on-time T3.
As shown in fig. 1, the time division multiplexing control module 201 outputs three non-overlapping high-level light source module control signals PWM 1-PWM 3, and when the light source module control signal PWM1 is at a high level, the constant current driver Q1 outputs a driving current to drive the red light source module to emit light; when the light source module control signal PWM2 is at a high level, the constant current driver Q2 outputs a driving current to drive the green light source module to emit light; when the light source module control signal PWM3 is at a high level, the constant current driver Q3 outputs a driving current to drive the blue light source module to emit light, so that the power output of the power supply is distributed to the red light source module via the constant current driver Q1, the green light source module via the constant current driver Q2, and the blue light source module via the constant current driver Q3 at different time periods within the control period T.
The LED lamp color is adjusted by setting the on-time t 1-t 3 of the red, green and blue light source modules and controlling the high level time of the light source module control signals PWM1, PWM2 and PWM 3.
In this embodiment, the LED lamp is a color-tunable flat lamp with a power rating of 20W, the light source portion is composed of 14 strings of 24 red light source modules each composed of 0.06W single particles, 14 strings of 24 green light source modules each composed of 0.06W single particles, and 14 strings of 24 blue light source modules each composed of 0.06W single particles, and the three color light source modules are connected by independent loops.
Fig. 4 is a functional block diagram of another embodiment of the power output module shown in fig. 1.
In this embodiment, as shown in fig. 3, the power output module 202 includes a constant current driver 2021 and three switching tubes K1-K3, the constant current driver 202 is a constant current power supply with open circuit protection, the three switching tubes K1-K3 are respectively connected in series with the light source modules D1-D3 of the corresponding colors, and then are all connected to the output end of the constant current driver 2021, three light source module control signals PWM1, PWM2, and PWM3 are respectively connected to the control ends of the switching tubes K1-K3 of the corresponding colors, when a certain light source module control signal is at a high level, the switching tube connected to the certain light source module is turned on, and the output of the constant current driver drives the corresponding light source module to emit light through the switching tube. In this way, compared with the power output module shown in fig. 3, only one constant current driver is needed, so that the cost is greatly reduced.
FIG. 5 is a timing diagram of an embodiment of light source module control signals in different color states.
In the present embodiment, as shown in fig. 5, (a) to (f) are signal timing diagrams of light source module control signals PWM1, PWM2 and PWM3 outputted by the light source module time division multiplexing control module under different color states, i.e., white highlight, white half-bright, purple highlight, purple half-bright, red highlight and red half-bright. The on-time T1 corresponds to the high level time of the light source module control signal PWM1, the on-time T2 corresponds to the high level time of the light source module control signal PWM2, the on-time T3 is corresponding to the high level time of the PWM3, wherein T ═ 4ms is the PWM period.
Fig. 5(a) shows a timing chart of the time division multiplexing module in a white and high light state, where T1 is 4/3ms, T2 is 4/3ms, T3 is 4/3ms, and T1+ T2+ T3 is T, the sum of the output powers of the constant current drivers Q1 to Q3 is about 20W, the red light source module, the green light source module, and the blue light source module all operate at 1/3 power, and the power consumption of the light source module for each color is 6.67W.
Fig. 5(b) shows a timing diagram of the time division multiplexing module in a white half-bright state, where T1 is 2/3ms, T2 is 2/3ms, T3 is 2/3ms, and T1+ T2+ T3 is T/2, the sum of the output powers of the constant current drivers Q1 to Q3 is about 10W, the red light source module, the green light source module, and the blue light source module all operate at 1/6 power, and the power consumption of the light source module in each color is 3.33W. In addition, in the control time T, the high levels of the control signals PWM 1-PWM 3 of the light source modules are uniformly spaced, so that the stability of the output power of the power converter 1 can be further maintained.
Fig. 5(c) shows a timing chart of the time division multiplexing module in the purple highlight state, where T1 is 2ms, T2 is 0ms, T3 is 2ms, and T1+ T2+ T3 is T, the sum of the output powers of the constant current drivers Q1 and Q3 is about 20W, the red light source module and the blue light source module both operate at half power, that is, the power consumption is 10W, and the green light source module does not operate.
Fig. 5(d) shows a timing diagram of the time division multiplexing module in the purple half-bright state, where T1 is 1ms, T2 is 0ms, T3 is 1ms, and T1+ T2+ T3 is T/2, the sum of the output powers of the constant current drivers Q1 and Q3 is about 10W, the red light source module and the blue light source module both operate at 1/4 power, that is, the power consumption is 5W, and the green light source module does not operate.
Fig. 5(e) shows a timing chart of the red highlight time division multiplexing module, where T1 is 4ms, T2 is 0ms, T3 is 0ms, and T1+ T2+ T3 is T, the output power of the constant current driver Q1 is about 20W, the red light source module operates at full power, that is, the power consumption is 20W, and the green light source module and the blue light source module do not operate.
Fig. 5(f) shows a red half-bright time division multiplexing timing chart, where T1 is 2ms, T2 is 0ms, T3 is 0ms, and T1+ T2+ T3 is T/2, the output power of the constant current driver Q1 is about 10W, the red light source module operates at half power, that is, the power consumption is 10W, and the green light source module and the blue light source module do not operate.
Given the example of 6 color adjustments above, other color states can be adjusted by adjusting the high time of the light source module control signals PWM1, PWM2, and PWM3, i.e.: and changing the on-time t1, t2 and t3 to control the light emitting power of the red light source module, the green light source module and the blue light source module, so that the color is mixed into different color states. For a color adjustment, the on-times t1, t2, and t3 are changed while maintaining the brightness, but the sum of t1, t2, and t3 is maintained at a constant value.
Meanwhile, as can be seen from fig. 5, as long as the maximum power of the LED lamp is determined, the maximum power of each light source module is also determined, and the maximum power of the LED lamp is the same, because the maximum brightness during monochromatic light emission should be the same as the maximum brightness during three-color light emission, and no matter the color is adjusted, brightness conversion occurs.
In this embodiment, if the conventional driving method is adopted, the light source module control signals PWM1, PWM2 and PWM3 are all high level, and the power peaks are superimposed, and a 60W power converter is required. With the scheme of the invention, the power of the power converter is one third of that of the traditional scheme. In addition, the situation of power peak value superposition can not occur, and the output power is stable.
In the present embodiment, as shown in fig. 5, the high levels of the light source module control signals PWM 1-PWM 3 are uniformly spaced during the control time T, so as to further maintain the stability of the output power of the power converter 1.
The light source module control signal PWM signal adopts positive logic, takes high level as effective, controls the output of the power output module, and drives the light source modules of three colors to emit light.
Although illustrative embodiments of the present invention have been described above to facilitate the understanding of the present invention by those skilled in the art, it should be understood that the present invention is not limited to the scope of the embodiments, and various changes may be made apparent to those skilled in the art as long as they are within the spirit and scope of the present invention as defined and defined by the appended claims, and all matters of the invention which utilize the inventive concepts are protected.
Claims (10)
1. A dimming method of an LED light-emitting device is characterized in that a time division multiplexing control module outputs a plurality of control signals respectively corresponding to a plurality of light source modules with different colors and controls at most one of the control signals to be at a high level at any moment, so that at most one path of output driving voltage or current drives the corresponding light source module to emit light.
2. The method of dimming an LED lighting device according to claim 1, wherein the LED lighting device comprises red, green and blue light source modules, a power output module and a time division multiplexing control module,
the dimming method comprises the steps of outputting a first light source module control signal, a second light source module control signal and a third light source module control signal which respectively correspond to the red light source module, the green light source module and the blue light source module through a time division multiplexing control module, controlling at most one of the first light source module control signal, the second light source module control signal and the third light source module control signal to be at a high level at any moment, and enabling the power output module to output driving voltage or current at most one path so as to drive the corresponding light source module to emit light.
3. The method of claim 2, wherein the time division multiplexing control module divides the first light source module control signal, the second light source module control signal, and the third light source module control signal in time, and adjusts the high-level time of the first light source module control signal, the second light source module control signal, and the third light source module control signal by adjusting the on-time of the red, green, and blue light source modules, thereby adjusting the color of the LED lighting device.
4. The method of claim 3, wherein the sum of the on-times of the red, green and blue light source modules maintains a constant value.
5. The dimming method of LED lighting device according to claim 4, wherein an on-time T1 corresponds to the first light source module control signal high level time, an on-time T2 corresponds to the second light source module control signal high level time, an on-time T3 corresponds to the third light source module control signal high level time, T4 ms is PWM period,
t1 ═ 4/3ms, T2 ═ 4/3ms, T3 ═ 4/3ms, and T1+ T2+ T3 ═ T, this time is a white highlight state, the red light source module, green light source module, and blue light source module all operate at 1/3 power, or T1 ═ 2ms, T2 ═ 0ms, T3 ═ 2ms, and T1+ T2+ T3 ═ T, this time is a purple highlight state, the red light source module and blue light source module all operate at half power, green light source module does not operate, or T1 ═ 4ms, T2 ═ 0ms, T3 ═ 0ms, and T1+ T2+ T3 ═ T, this time is a red highlight state, the red light source module operates at full power, and the green light source module and blue light source module do not operate;
or,
t1 is 2/3ms, T2 is 2/3ms, T3 is 2/3ms, and T1+ T2+ T3 is T/2, which is a white half-bright state, the red light source module, the green light source module and the blue light source module all operate at 1/6 power, or T1 is 1ms, T2 is 0, T3 is 1ms, and T1+ T2+ T3 is T/2, which is a purple half-bright state, the red light source module and the blue light source module all operate at 1/4 power, the green light source module does not operate, or T1 is 2ms, T2 is 0, T3 is 0, and T1+ T2+ T3 is T/2, which is a red half-bright state, the red light source module operates at half power, and the green light source module and the blue light source module do not operate at T2 power.
6. The dimming method of an LED lighting device according to any one of claims 2 to 5, wherein the high levels of the first light source module control signal, the second light source module control signal and the third light source module control signal are uniformly spaced during the control period.
7. The dimming method of an LED lighting device according to any one of claims 2 to 5, wherein three registers of the time division multiplexing control module respectively store the on-times of the red, green and blue light source modules, and a communication interface of the time division multiplexing control module is connected to the color modulation control circuit, receives the on-time data of the red, green and blue light source modules from the color modulation control circuit, and is configured to adjust and update the on-times of the red, green and blue light source modules stored in the three registers, thereby implementing the color modulation of the LED lamp.
8. The method as claimed in claim 7, wherein the light source module control signal corresponding to the first color is first changed from low level to high level and maintains the corresponding on-time in the control period, then the light source module control signal corresponding to the second color is changed from low level to high level and maintains the corresponding on-time after the light source module control signal corresponding to the first color is changed to low level, and finally the light source module control signal corresponding to the third color is changed from low level to high level and maintains the corresponding on-time after the light source module control signal corresponding to the second color is changed to low level.
9. The dimming method of an LED lighting device according to any one of claims 2 to 5, wherein the power output module comprises three constant current drivers, wherein
When the first light source module control signal is at a high level, the first constant current driver outputs a driving current to drive the red light source module to emit light; when the control signal of the second light source module is at a high level, the second constant current driver outputs a driving current to drive the green light source module to emit light; when the control signal of the third light source module is at a high level, the third constant current driver outputs a driving current to drive the blue light source module to emit light; therefore, the voltage output power is distributed to the red light source module, the green light source module and the blue light source module through the first constant current driver, the second constant current driver and the third constant current driver at different time intervals in the control cycle.
10. The dimming method of an LED lighting device according to any one of claims 2 to 5, wherein the time division multiplexing control module and the power output module are both connected to a power converter, and the power converter provides dc power to the time division multiplexing control module and the power output module, so that the maximum powers of the LED lamps are determined and the same, and then the maximum powers of the red, green and blue light source modules are the same, thereby ensuring that the maximum brightness of monochromatic light emission is the same as the maximum brightness of three-color light emission during color adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510353103.0A CN104936350B (en) | 2011-09-15 | 2011-09-15 | A kind of light-dimming method of LED light emission device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110272764.2A CN102421230B (en) | 2011-09-15 | 2011-09-15 | A kind of LED color adjustment driver |
| CN201510353103.0A CN104936350B (en) | 2011-09-15 | 2011-09-15 | A kind of light-dimming method of LED light emission device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110272764.2A Division CN102421230B (en) | 2011-09-15 | 2011-09-15 | A kind of LED color adjustment driver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104936350A true CN104936350A (en) | 2015-09-23 |
| CN104936350B CN104936350B (en) | 2017-12-12 |
Family
ID=45945391
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510353103.0A Active CN104936350B (en) | 2011-09-15 | 2011-09-15 | A kind of light-dimming method of LED light emission device |
| CN201110272764.2A Expired - Fee Related CN102421230B (en) | 2011-09-15 | 2011-09-15 | A kind of LED color adjustment driver |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110272764.2A Expired - Fee Related CN102421230B (en) | 2011-09-15 | 2011-09-15 | A kind of LED color adjustment driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN104936350B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107087327A (en) * | 2017-05-28 | 2017-08-22 | 巨尔(上海)光电照明有限公司 | LED/light source regulating system and its adjusting method |
| CN107580392A (en) * | 2017-09-25 | 2018-01-12 | 欧普照明股份有限公司 | A constant power output system and lighting device |
| CN108513396A (en) * | 2018-03-27 | 2018-09-07 | 广州市浩洋电子股份有限公司 | A kind of control method of LED lamp invariable power constant current time-sharing multiplex |
| CN113178166A (en) * | 2021-04-08 | 2021-07-27 | Tcl华星光电技术有限公司 | LED panel and driving method thereof |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103179757B (en) * | 2013-03-25 | 2015-07-08 | 浙江海振电子科技有限公司 | Time-sharing multi-path constant current driving light emitting diode (LED) lamp |
| CN103634986B (en) * | 2013-11-04 | 2016-10-19 | 惠州雷士光电科技有限公司 | Multichannel light modulating device and light-dimming method thereof |
| CN103874310A (en) * | 2014-04-10 | 2014-06-18 | 浙江省能源与核技术应用研究院 | Method for improving LED visual illuminating effect and lowering heating of LED lamp |
| CN104066237B (en) * | 2014-05-09 | 2016-08-24 | 浙江凯耀照明股份有限公司 | A kind of LED driving method |
| CN104183585B (en) * | 2014-08-26 | 2017-05-17 | 广东威创视讯科技股份有限公司 | Chip laminating structure and method for controlling LED |
| CN104318903B (en) | 2014-11-19 | 2018-05-18 | 京东方科技集团股份有限公司 | Driving power, pixel unit drive circuit and organic light emitting display |
| CN104837267B (en) * | 2015-05-12 | 2018-09-18 | 金红涛 | Multichannel light modulating device |
| CN105848386A (en) * | 2016-04-20 | 2016-08-10 | 深圳市火星物联科技有限公司 | Multipath time-sharing light mixing system |
| EP3626029B1 (en) * | 2017-05-18 | 2023-06-07 | Gary Paulsen | Lighting devices and methods for use |
| CN110493917A (en) * | 2019-08-24 | 2019-11-22 | 浙江雷培德科技有限公司 | A kind of multiple-channel output control circuit and method for LED light supplementing lamp for plants |
| CN111901930B (en) * | 2020-08-31 | 2022-10-28 | 深圳市明微电子股份有限公司 | LED driving method, driving circuit thereof and LED lighting device |
| CN112886953A (en) * | 2021-01-27 | 2021-06-01 | 华中科技大学 | Driving method and driving system of large-scale thermally-modulated phase shifter |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1888522A (en) * | 2006-07-24 | 2007-01-03 | 北方工业大学 | 256 colourful lamp with random changeable colours |
| CN101196276A (en) * | 2007-09-21 | 2008-06-11 | 广州市雅江光电设备有限公司 | Program controlled mixed color LED light projector |
| WO2008068713A2 (en) * | 2006-12-08 | 2008-06-12 | Koninklijke Philips Electronics N.V. | Device for generating light with a variable color |
| CN101621880A (en) * | 2009-04-16 | 2010-01-06 | 青岛海信电器股份有限公司 | Three-color light source color point adjustment method and adjustment system |
| CN101658071A (en) * | 2007-03-08 | 2010-02-24 | 罗姆股份有限公司 | Led illumination device and its drive method |
| CN201515523U (en) * | 2009-05-27 | 2010-06-23 | 彩虹集团公司 | Driving device of light-emitting diode LED |
| CN102087834A (en) * | 2009-12-08 | 2011-06-08 | Nxp股份有限公司 | Method and apparatus for LED driver color-sequential scan |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7154458B2 (en) * | 2002-08-21 | 2006-12-26 | Nec Viewtechnology, Ltd. | Video display device with spatial light modulator |
| US8330393B2 (en) * | 2007-04-20 | 2012-12-11 | Analog Devices, Inc. | System for time-sequential LED-string excitation |
-
2011
- 2011-09-15 CN CN201510353103.0A patent/CN104936350B/en active Active
- 2011-09-15 CN CN201110272764.2A patent/CN102421230B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1888522A (en) * | 2006-07-24 | 2007-01-03 | 北方工业大学 | 256 colourful lamp with random changeable colours |
| WO2008068713A2 (en) * | 2006-12-08 | 2008-06-12 | Koninklijke Philips Electronics N.V. | Device for generating light with a variable color |
| CN101658071A (en) * | 2007-03-08 | 2010-02-24 | 罗姆股份有限公司 | Led illumination device and its drive method |
| CN101196276A (en) * | 2007-09-21 | 2008-06-11 | 广州市雅江光电设备有限公司 | Program controlled mixed color LED light projector |
| CN101621880A (en) * | 2009-04-16 | 2010-01-06 | 青岛海信电器股份有限公司 | Three-color light source color point adjustment method and adjustment system |
| CN201515523U (en) * | 2009-05-27 | 2010-06-23 | 彩虹集团公司 | Driving device of light-emitting diode LED |
| CN102087834A (en) * | 2009-12-08 | 2011-06-08 | Nxp股份有限公司 | Method and apparatus for LED driver color-sequential scan |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107087327A (en) * | 2017-05-28 | 2017-08-22 | 巨尔(上海)光电照明有限公司 | LED/light source regulating system and its adjusting method |
| CN107580392A (en) * | 2017-09-25 | 2018-01-12 | 欧普照明股份有限公司 | A constant power output system and lighting device |
| CN108513396A (en) * | 2018-03-27 | 2018-09-07 | 广州市浩洋电子股份有限公司 | A kind of control method of LED lamp invariable power constant current time-sharing multiplex |
| WO2019184567A1 (en) * | 2018-03-27 | 2019-10-03 | 广州市浩洋电子股份有限公司 | Method for controlling led lamp constant-power constant-current time division multiplexing |
| CN113178166A (en) * | 2021-04-08 | 2021-07-27 | Tcl华星光电技术有限公司 | LED panel and driving method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102421230A (en) | 2012-04-18 |
| CN104936350B (en) | 2017-12-12 |
| CN102421230B (en) | 2015-08-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102421230B (en) | A kind of LED color adjustment driver | |
| CN102316648B (en) | Light-emitting diode (LED) illuminating device | |
| CN104365004B (en) | Drive circuit for tunable optical solid state illumination device | |
| US8853958B2 (en) | Driving circuits for solid-state lighting apparatus with high voltage LED components and related methods | |
| CN102870498A (en) | Dimming regulator including programmable hysteretic down-converter for increasing dimming resolution of solid state lighting loads | |
| Alonso et al. | A long-life high-power-factor HPS-lamp LED retrofit converter based on the integrated buck-boost buck topology | |
| US8354802B2 (en) | Solid state device controller | |
| CN108696967B (en) | Dimming and toning driving circuit of LED lamp | |
| WO2012059778A1 (en) | Driver for two or more parallel led light strings | |
| US9658638B2 (en) | Buck-boost voltage converter circuits for solid state lighting apparatus | |
| CN102045928A (en) | LED (light-emitting diode) lamp power supply capable of dimming | |
| CN107567144B (en) | Color mixing controller, color mixing control chip and dimming and color mixing LED driving control circuit | |
| CN202261957U (en) | LED lighting device | |
| US9763297B2 (en) | Lighting apparatus and methods using oscillator-based dimming control | |
| CN102316647A (en) | LED lamp color temperature adjusting driver | |
| CN201937905U (en) | Light emitting diode (LED) lamp dimmable power supply | |
| CN103152934A (en) | LED (Light Emitting Diode) drive circuit capable of adjusting light and color temperature | |
| CN202261958U (en) | LED lamp color adjustment driver | |
| CN202261959U (en) | Color temperature adjusting driver of light-emitting diode (LED) lamp | |
| CN209861217U (en) | LED lighting module | |
| CN203814005U (en) | LED dimming circuit with trigger lock memory function | |
| CN218301688U (en) | Landscape brightening lamp driving system and landscape brightening lamp | |
| US11930571B2 (en) | Solid-state lighting with a luminaire phase-dimming driver | |
| CN211859956U (en) | Half-bridge LLC constant power circuit of adjusting luminance | |
| CN202551438U (en) | Light-load control structure for power source using LLC (logical link control) topology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180530 Address after: 610046 Wuhou District Wuhou new town administrative committee, Wuxi City, Chengdu, Sichuan, 6 6 units of wukexi five road 360 units 1, 2, 3, 4, 5, 6, and 6 floor. Patentee after: Sichuan able photoelectric Co Ltd Address before: 611731 Sichuan Chengdu high tech Zone (West District) Xinda Road No. 2 Patentee before: Sichuan Sunfor Light Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190201 Address after: 610046 No. 360, Wukexi Five Road, Chengdu City, Sichuan Province Patentee after: Sichuan can bo Investment Limited smart lighting Address before: 610046 Wuhou District Wuhou new town administrative committee, Wuxi City, Chengdu, Sichuan, 6 6 units of wukexi five road 360 units 1, 2, 3, 4, 5, 6, and 6 floor. Patentee before: Sichuan able photoelectric Co Ltd |
|
| TR01 | Transfer of patent right | ||
| CP03 | Change of name, title or address |
Address after: 610046 No. 360, Wukexi Five Road, Chengdu City, Sichuan Province Patentee after: Sichuan energy investment intelligent photoelectric Co., Ltd Address before: No.2, floor 3, unit 2, building 6, no.360, Xiwu Road, Wuhou District, Chengdu Patentee before: SICHUAN NENGTOU BOZHONG WISDOM LIGHTING INVESTMENT Co.,Ltd. |
|
| CP03 | Change of name, title or address |