CN104684219B - LED lighting device and drive circuit - Google Patents
LED lighting device and drive circuit Download PDFInfo
- Publication number
- CN104684219B CN104684219B CN201510102978.3A CN201510102978A CN104684219B CN 104684219 B CN104684219 B CN 104684219B CN 201510102978 A CN201510102978 A CN 201510102978A CN 104684219 B CN104684219 B CN 104684219B
- Authority
- CN
- China
- Prior art keywords
- led
- constant current
- unit
- resistance
- switching device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The invention discloses a drive circuit of an LED lamp power supply. The drive circuit of the LED lamp power supply comprises a rectifier filter unit used for rectifying and filtering the alternating current for outputting a first DC voltage, a constant voltage power supply unit used for converting the first DC voltage outputted by the rectifier filter unit to the second DC voltage and outputting the constant voltage, a constant current drive unit used for performing the constant current conversion on the constant voltage outputted by the constant voltage power supply unit for outputting the constant current to the LED light source, and a dimming and toning control unit used for adjusting the brightness and temperature of the LED light source through outputting a first pulse width modulation signal and a second pulse width modulation signal, wherein the constant voltage power supply unit is the isolation type and the constant current drive unit is the non-isolated type.
Description
Technical field
The present invention relates to a kind of LED illumination device, more particularly, to a kind of drive circuit of LED illumination device.
Background technology
LED (Light Emitting Diode, light emitting diode) light fixture is replacing rapidly traditional incandescent lamp.With it is white
Vehement lamp is compared, and LED has the advantages that the high and low power consumption of luminous efficiency, adjustable color temperature, life-span length.In all parts of LED lamp
In, the design of power supply and drive circuit is most important.Because the light characteristic of LED is directly related with electric current, therefore LED generally adopts
Constant current drives, and to ensure to LED luminance, the accurate regulation of colourity, while avoiding driving current off-rating, affects reliability
And the life-span.
The patent of invention file of such as Publication No. CN101572972 discloses a kind of tunable optical constant-current source circuit, including
EMC protection circuits, PFC correcting circuits, constant-current source circuit and adjusting control circuit.The input of wherein EMC protection circuits is terminated to
External AC 220V is input into, and output end is connected to PFC correcting circuits, constant voltage signal is exported to constant-current source circuit by PFC correcting circuits
And adjusting control circuit, outside light fixture, the output end output pulse width modulation letter of adjusting control circuit are driven by constant current source output terminal
Number drive constant-current source, to reach light modulation purpose.The output and input of such circuit constant-current source is without electrical isolation, such case
It is required that lamp outer casing itself has good electrical isolation, safety can be ensured.Therefore, this LED lamp do not isolated is usual
In commercial illumination and street lamp, i.e., the occasion that only electrician of professional training just can contact.In addition, if the output of constant-current source
Electrical isolation is realized using switching mode power supply transformer with input, in this case, the operating frequency of Switching Power Supply is usually 20kHz
～70kHz, response of such operating frequency to pulse-width signal (usually 500Hz～1kHz) is not sensitive enough, i.e. light fixture
Relatively low brightness cannot be adjusted to.In common realization, when the dutycycle of pulse-width signal is less than 10% or so, light fixture is just
Can directly extinguish.
To sum up, the effect that this single-stage constant current drives is unsatisfactory, especially for the LED lamp that power is larger.
Accordingly, it would be desirable to the more stable power supply of performance and drive circuit design, and the adjusting control circuit that cost is lower.
The content of the invention
For this purpose, the present invention provides a kind of LED illumination device and drive circuit, to try hard to solve or at least alleviate to deposit above
At least one problem.
According to an aspect of the present invention, there is provided a kind of LED lamp power driving circuit, including：Rectification filtering unit, uses
In by alternating current carry out rectification and filtering to export the first DC voltage；Constant voltage source unit, for will be by rectification filtering unit
First DC voltage of output is converted to the second DC voltage and exports constant voltage；Constant current driving unit, for constant pressure is electric
The constant voltage of source unit output carries out constant current and converts to export constant current to LED/light source；With light modulation toning control unit, use
In brightness and the changes in temperature of LED/light source are adjusted by exporting the first pulse-width signal and the second pulse-width signal, wherein permanent
Piezoelectricity source unit is isolated form, and constant current driving unit is non-isolation type.
Alternatively, in LED lamp power driving circuit of the invention, constant voltage source unit include for electrically every
From isolated part.
Alternatively, in LED lamp power driving circuit of the invention, also include：Changes in temperature light switch unit, is used for
The cold and warm tone of LED/light source is adjusted, wherein the first pulse-width signal is output to constant current driving unit, the second pulsewidth modulation letter
Number it is output to changes in temperature light switch unit.
Alternatively, in LED lamp power driving circuit of the invention, LED/light source is included with different-colour
At least first group LED and second group of LED, the changes in temperature light switch unit includes：First switch device
(Q1) the first output end of constant current driving unit and second defeated, is connected to the first series arm of first group of LED
Go out between end；Second switch device (Q2), with the second series arm of second group of LED constant current driving unit is connected to
The first output end and the second output end between；First partial pressure branch road, including first resistor (R1), the second resistance (R2) of series connection
With 3rd resistor (R3)；3rd switching device (Q3), it is connected to constant current driving unit with the 3rd series arm of partial pressure branch road
The first output end and earth terminal between；Second partial pressure branch road, including the first output end for being connected on constant current driving unit and
The 4th resistance (R4) and the 5th resistance (R5) between two output ends；With the 4th switching device (Q4), itself and the 4th resistance (R4)
Parallel connection, wherein the gating end of the 3rd switching device receives the second pulse-width signal from light modulation toning control unit, wherein
The gating end of first switch device (Q1) is connected between second resistance (R2) and 3rd resistor (R3), second switch device (Q2)
Gating end be connected between the 4th resistance (R4) and the 5th resistance (R5), the gating end of the 4th switching device (Q4) is connected to
Between one resistance (R1) and second resistance (R2).
Alternatively, in LED lamp power driving circuit of the invention, the 3rd switching device includes the pole of NPN type three
Pipe, the gating end of the 3rd switching device is base stage, and base stage receives the second pulse-width signal and Jing via the 6th resistance (R6)
Earth terminal is connected to by the 7th resistance (R7), the colelctor electrode of the 3rd switching device is connected to 3rd resistor (R3), emitter stage connection
To earth terminal.
Alternatively, in LED lamp power driving circuit of the invention, the 4th switching device includes the pole of positive-negative-positive three
Pipe, the gating end of the 4th switching device is base stage, and it is first defeated that the emitter stage of the 4th switching device is connected to constant current driving unit
Go out end, the colelctor electrode of the 4th switching device is connected between the 4th resistance (R4) and the 5th resistance (R5).
Alternatively, in LED lamp power driving circuit of the invention, first switch device includes PMOS, the
The gating end of one switching device is grid, and the drain electrode of first switch device is connected with first group of LED, first switch device
The source electrode of part is connected to the first output end of constant current driving unit.
Alternatively, in LED lamp power driving circuit of the invention, second switch device includes PMOS, the
The gating end of two switching devices is grid, and the drain electrode of second switch device is connected with second group of LED, second switch device
The source electrode of part is connected to the first output end of constant current driving unit.
Alternatively, in LED lamp power driving circuit of the invention, also including EMI filter units, for suppressing
The electromagnetic interference that electrical network and electronic component itself are produced.
Alternatively, in LED lamp power driving circuit of the invention, constant current driving unit operating frequency range is
600kHz to 1000kHz.
According to a further aspect in the invention, there is provided a kind of LED illumination device, including LED lamp power supply as above
Drive circuit and LED/light source.
LED lamp power driving circuit scheme of the invention, employs the driving of constant pressure and flow the two poles of the earth, one side constant pressure
Switching Power Supply realizes circuit output and mains isolation by transformer, so that it is guaranteed that the security of circuit；On the other hand due to
Constant current driving unit adopts low pressure non-isolated structure, operating frequency to realize essence far above light modulation pulse-width signal
The very high brightness regulation of degree, and less than the steady illumination under the low illumination conditions of 5% rated power.
In addition, LED lamp power driving circuit scheme of the invention, employs using single constant current driving unit reality
Existing changes in temperature switching circuit, has not only saved cost, and due in adjustment of cold/warm single constant-current supply output current be steady
It is fixed constant, therefore during adjustment of cold/warm, the luminosity of whole light fixture will not change.
To sum up, the present invention can provide the more stable LED power of performance and drive circuit design, and the tune that cost is lower
Light control circuit.
Description of the drawings
In order to realize above-mentioned and related purpose, some illustrative sides are described herein in conjunction with explained below and accompanying drawing
Face, these aspects indicate various modes that can be to put into practice principles disclosed herein, and all aspects and its equivalent aspect
It is intended to fall under in the range of theme required for protection.By being read in conjunction with the accompanying detailed description below, the disclosure it is above-mentioned
And other purposes, feature and advantage will be apparent from.Throughout the disclosure, identical reference generally refers to identical
Part or element.
Fig. 1 shows the structure of the LED lamp power driving circuit 100 of an illustrative embodiments of the invention
Figure；
Fig. 2 shows the changes in temperature of the LED lamp power driving circuit 100 of an illustrative embodiments of the invention
The circuit diagram of light switch unit 150.
Specific embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure and should not be by embodiments set forth here
Limited.On the contrary, there is provided these embodiments are able to be best understood from the disclosure, and can be by the scope of the present disclosure
Complete conveys to those skilled in the art.
Fig. 1 is the structural representation of LED lamp power driving circuit 100 according to an embodiment of the invention.The LED
The drive circuit of lamp power includes：Rectification filtering unit 110, constant voltage source unit 120, constant current driving unit 130 and light modulation
Toning control unit 140.
Alternating current is carried out rectification and filtering to export the first DC voltage by rectification filtering unit 110, such as 220V
The situation of civil power input, the output after rectifying and wave-filtering is no more than the direct current of 400V.Constant voltage source unit 120 will be filtered by rectification
The first voltage direct current of the output of ripple unit 110 is converted to second voltage direct current and exports burning voltage, wherein constant voltage source
Unit 120 includes the isolated part for electrical isolation, an embodiment of the invention, constant voltage source unit 120 by
Constant pressure Switching Power Supply and transformer are constituted, and constant pressure Switching Power Supply changes high voltage direct current (direct current such as less than 400V)
For 24V low-voltage DCs, and keep stablizing for output voltage.Wherein the operating frequency of constant pressure Switching Power Supply be 20kHz extremely
70kHz.Constant pressure Switching Power Supply realizes the isolation of output stage and input stage (civil power) by transformer, so as to ensure its follow-up institute
There is the security of circuit.Constant current driving unit 130 is connected with constant voltage source unit 120, the perseverance that constant voltage source unit 120 is exported
Determining voltage carries out constant current conversion to export constant current to LED/light source, and according to one embodiment of present invention, the constant current is protected
Hold in 250mA to 300mA, the operating frequency range of constant current driving unit 130 is 600kHz to 1000kHz.It should be noted that
The constant voltage source unit 120 is isolated form, and constant current driving unit 130 is non-isolation type.In addition, light modulation toning control unit 140
Output two-way pulse-width signal, is respectively intended to adjust brightness and the changes in temperature of LED/light source.
According to one embodiment of present invention, the drive circuit 100 also includes changes in temperature light switch unit 150, for adjusting
The cold and warm tone of LED/light source.In i.e. above-mentioned two-way pulse-width signal, the first pulse-width signal is output to constant current and drives list
To adjust the brightness of light, the second pulse-width signal is output to changes in temperature light switch unit 150 to adjust the cold-warm color of light for unit 130
Adjust, then exporting changes in temperature light switch unit 150 to LED.
Wherein, LED/light source includes at least first group LED and second group of LED light emitter with different-colour
Part.
According to one embodiment of present invention, the drive circuit 100 also includes EMI filter units 160, and its input is terminated to
The input of external power source AV220V, it is then that alternating current is defeated for the electromagnetic interference for suppressing electrical network and electronic component itself to produce
Go out to rectification filtering unit 110.
Constant pressure and flow two-stage drive circuit of the invention, by constant voltage source unit circuit output and civil power are realized
Isolation, has ensured the security of circuit；Simultaneously non-isolated constant current driving unit is with the frequency adjusting pulsewidth of 600kHz to 1000kHz
Modulated signal (usually 1kHz), it is possible to achieve the very high brightness regulation of precision, and brightness less than less than 5% low-light level it is defeated
Go out.
Fig. 2 shows the circuit diagram of changes in temperature light switch unit 150 according to an embodiment of the invention.Changes in temperature light
Switch unit 150 includes：First switch device Q1, the first series connection with first group of LED (LED_P1, LED_N)
Road is connected between the first output end of constant current driving unit and the second output end；Second switch device Q2, sends out with second group of LED
Second series arm of optical device (LED_P2, LED_N) is connected to first output end and the second output end of constant current driving unit
Between；First partial pressure branch road, including first resistor R1, second resistance R2 and 3rd resistor R3 connected；3rd switching device Q3,
It is connected between the first output end of constant current driving unit and earth terminal GND with the 3rd series arm of partial pressure branch road；Second
Partial pressure branch road, including the 4th resistance R4 and the 5th being connected between the first output end of constant current driving unit and the second output end
Resistance R5；With the 4th switching device Q4, it is in parallel with the 4th resistance R4.
The gating end of wherein the 3rd switching device receives the second pulsewidth modulation letter from light modulation toning control unit 140
Number, i.e. changes in temperature switching signal, the wherein gating end of first switch device Q1 is connected between second resistance R2 and 3rd resistor R3,
The gating end of second switch device Q2 is connected between the 4th resistance R4 and the 5th resistance R5, the gating end of the 4th switching device Q4
It is connected between first resistor R1 and second resistance R2.
More specifically, the 3rd switching device includes NPN type triode Q3, the gating end of the 3rd switching device is base stage, base
Pole receives the second pulse-width signal and is connected to earth terminal via the 7th resistance R7 via the 6th resistance R6, and its colelctor electrode connects
3rd resistor R3 is connected to, emitter stage is connected to earth terminal.
4th switching device includes PNP type triode Q4, and the gating end of the 4th switching device is base stage, its emitter stage connection
To the first output end of constant current driving unit, colelctor electrode is connected between the 4th resistance R4 and the 5th resistance R5.
First switch device includes PMOS Q1, and the gating end of the first switch device is grid, and it drains and first group
LED is connected, and source electrode is connected to the first output end of constant current driving unit.
Second switch device includes PMOS Q2, and the gating end of the second switch device is grid, and it drains and second group
LED is connected, and source electrode is connected to the first output end of constant current driving unit.
When changes in temperature signal input is high level, the conducting of NPN type triode Q3 has electric current to pass through on the first partial pressure branch road,
PMOS Q1 and PNP type triode Q4 are turned on, and then the 4th resistance R4 is shorted, the cut-off of PMOS Q2.Now first group of LED sends out
There is electric current to pass through on optical device, the LED is lighted, in the same manner, second group of LED is extinguished.
Correspondingly, when changes in temperature signal input is low level, NPN type triode Q3 cut-off, then on the first partial pressure branch road
No current passes through, and so as to PMOS Q1 and PNP type triode Q4 are turned off, has electric current to pass through on the second partial pressure branch road, therefore
PMOS Q2 is turned on.In the same manner, now second group of LED is lighted, and first group of LED is extinguished.
Because in actual applications, two paths of LED luminescent device need not be lighted simultaneously, therefore changes in temperature light of the invention
Switching circuit, it is possible to use single constant current driving unit, without two or more constant current units.Cost has not only been saved,
And in adjustment of cold/warm, single constant-current supply output current stablizes constant, therefore adjustment of cold/warm will not change whole light fixture
Luminosity.
It should be appreciated that in order to simplify the disclosure and help understand one or more in each inventive aspect, it is right above
The present invention exemplary embodiment description in, the present invention each feature be grouped together into sometimes single embodiment, figure or
In person's descriptions thereof.However, the method for the disclosure should be construed to reflect following intention：I.e. required for protection is sent out
The bright feature more features required than being expressly recited in each claim.More precisely, as the following claims
As book reflects, inventive aspect is all features less than single embodiment disclosed above.Therefore, it then follows concrete real
Thus the claims for applying mode are expressly incorporated in the specific embodiment, and wherein each claim itself is used as this
Bright separate embodiments.
Those skilled in the art should be understood the module or unit or group of the equipment in example disclosed herein
Part can be arranged in equipment as depicted in this embodiment, or alternatively can be positioned at and the equipment in the example
In one or more different equipment.Module in aforementioned exemplary can be combined as a module or be segmented in addition multiple
Submodule.
Those skilled in the art are appreciated that can be carried out adaptively to the module in the equipment in embodiment
Change and they are arranged in one or more equipment different from the embodiment.Can be the module or list in embodiment
Unit or component are combined into a module or unit or component, and can be divided in addition multiple submodule or subelement or
Sub-component.In addition at least some in such feature and/or process or unit is excluded each other, can adopt any
Combine to all features disclosed in this specification (including adjoint claim, summary and accompanying drawing) and so disclosed
Where all processes or unit of method or equipment are combined.Unless expressly stated otherwise, this specification is (including adjoint power
Profit is required, summary and accompanying drawing) disclosed in each feature can it is identical by offers, be equal to or the alternative features of similar purpose carry out generation
Replace.
A：LED lamp power driving circuit of the invention, wherein constant current driving unit operating frequency range is
600kHz to 1000kHz.
Although additionally, it will be appreciated by those of skill in the art that some embodiments described herein include other embodiments
In included some features rather than further feature, but the combination of the feature of different embodiments means in of the invention
Within the scope of and form different embodiments.For example, in the following claims, embodiment required for protection appoint
One of meaning can in any combination mode using.
Additionally, some heres in the embodiment be described as can be by the processor of computer system or by performing
The combination of method or method element that other devices of the function are implemented.Therefore, with for implementing methods described or method
The processor of the necessary instruction of element forms the device for implementing the method or method element.Additionally, device embodiment
Element described in this is the example of following device：The device is used to implement by performed by the element for the purpose for implementing the invention
Function.
As used in this, unless specifically stated so, come using ordinal number " first ", " second ", " the 3rd " etc.
Description plain objects are merely representative of and are related to the different instances of similar object, and are not intended to imply that the object being so described must
Must have the time it is upper, spatially, sequence aspect or given order in any other manner.
Although describing the present invention according to the embodiment of limited quantity, above description, the art are benefited from
It is interior it is clear for the skilled person that in the scope of the present invention for thus describing, it can be envisaged that other embodiments.Additionally, it should be noted that
Language used in this specification primarily to readable and teaching purpose and select, rather than in order to explain or limit
Determine subject of the present invention and select.Therefore, in the case of without departing from the scope of the appended claims and spirit, for this
Many modifications and changes will be apparent from for the those of ordinary skill of technical field.For the scope of the present invention, to this
The done disclosure of invention is illustrative and not restrictive, and it is intended that the scope of the present invention be defined by the claims appended hereto.
Claims (9)
1. a kind of LED lamp power driving circuit, including：
Rectification filtering unit, for alternating current to be carried out into rectification and filtering to export the first DC voltage；
Constant voltage source unit, for the exported by the rectification filtering unit first DC voltage to be converted to into the second DC voltage
And export constant voltage；
Constant current driving unit, converts to export constant current extremely for the constant voltage that constant voltage source unit is exported to be carried out into constant current
LED/light source；With
Light modulation toning control unit, for adjusting LED by exporting the first pulse-width signal and the second pulse-width signal
The brightness of light source and changes in temperature,
Changes in temperature light switch unit, for adjusting the cold and warm tone of LED/light source, wherein, first pulse-width signal is output
To the constant current driving unit, second pulse-width signal is output to the changes in temperature light switch unit, wherein, it is described
LED/light source includes at least first group LED and second group of LED with different-colour,
The changes in temperature light switch unit includes：
First switch device (Q1), with the first series arm of first group of LED the constant current driving unit is connected to
The first output end and the second output end between；
Second switch device (Q2), with the second series arm of second group of LED the constant current driving unit is connected to
The first output end and the second output end between；
First partial pressure branch road, including first resistor (R1), second resistance (R2) and the 3rd resistor (R3) connected；
3rd switching device (Q3), it is first defeated that it is connected to the constant current driving unit with the 3rd series arm of partial pressure branch road
Go out between end and earth terminal；
Second partial pressure branch road, including the 4th be connected between the first output end of the constant current driving unit and the second output end
Resistance (R4) and the 5th resistance (R5)；With
4th switching device (Q4), it is in parallel with the 4th resistance (R4),
The gating end of wherein the 3rd switching device receives the second pulse-width signal from the light modulation toning control unit, its
The gating end of middle first switch device (Q1) is connected between second resistance (R2) and 3rd resistor (R3), second switch device
(Q2) gating end is connected between the 4th resistance (R4) and the 5th resistance (R5), the gating end connection of the 4th switching device (Q4)
To between first resistor (R1) and second resistance (R2)；
Wherein described constant voltage source unit is isolated form, and the constant current driving unit is non-isolation type.
2. LED lamp power driving circuit as claimed in claim 1, wherein the constant voltage source unit include for electrically every
From isolated part.
3. LED lamp power driving circuit as claimed in claim 1, wherein the 3rd switching device includes the pole of NPN type three
Pipe, the gating end of the 3rd switching device is base stage, and base stage receives the second pulse-width signal simultaneously via the 6th resistance (R6)
And earth terminal is connected to via the 7th resistance (R7), the colelctor electrode of the 3rd switching device is connected to 3rd resistor (R3), emitter stage
It is connected to earth terminal.
4. LED lamp power driving circuit as claimed in claim 1, wherein the 4th switching device includes the pole of positive-negative-positive three
Pipe, the gating end of the 4th switching device is base stage, and the emitter stage of the 4th switching device is connected to the of constant current driving unit
One output end, the colelctor electrode of the 4th switching device is connected between the 4th resistance (R4) and the 5th resistance (R5).
5. LED lamp power driving circuit as claimed in claim 1, wherein the first switch device includes PMOS, institute
The gating end for stating first switch device is grid, and the drain electrode of first switch device is connected with first group of LED, and first opens
The source electrode for closing device is connected to the first output end of the constant current driving unit.
6. LED lamp power driving circuit as claimed in claim 1, wherein the second switch device includes PMOS, institute
The gating end for stating second switch device is grid, and the drain electrode of second switch device is connected with second group of LED, and second opens
The source electrode for closing device is connected to the first output end of the constant current driving unit.
7. LED lamp power driving circuit as claimed in claim 1, also including EMI filter units, for suppressing electrical network and electricity
The electromagnetic interference that subcomponent itself is produced.
8. LED lamp power driving circuit as claimed in claim 1, wherein the constant current driving unit operating frequency range is
600kHz to 1000kHz.
9. a kind of LED illumination device, including LED lamp power driving circuit and LED as any one of claim 1-8
Light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510102978.3A CN104684219B (en) | 2015-03-09 | 2015-03-09 | LED lighting device and drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510102978.3A CN104684219B (en) | 2015-03-09 | 2015-03-09 | LED lighting device and drive circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104684219A CN104684219A (en) | 2015-06-03 |
| CN104684219B true CN104684219B (en) | 2017-05-10 |
Family
ID=53318633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510102978.3A Expired - Fee Related CN104684219B (en) | 2015-03-09 | 2015-03-09 | LED lighting device and drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104684219B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105376892A (en) * | 2015-12-11 | 2016-03-02 | 成都翰道科技有限公司 | Intelligent LED lamp control system based on adjustable constant-current drive circuit |
| CN105792416B (en) * | 2016-03-16 | 2018-10-16 | 浙江双宇电子科技有限公司 | A kind of control circuit of switch dimming LED light |
| CN106051499A (en) * | 2016-06-17 | 2016-10-26 | 厦门阳光恩耐照明有限公司 | LED light-emitting mechanism capable of regulating color temperature |
| CN108337762B (en) * | 2017-01-20 | 2022-06-24 | 松下知识产权经营株式会社 | Control circuit and LED lighting device |
| CN111288368A (en) * | 2020-02-26 | 2020-06-16 | 赛尔富电子有限公司 | Dimming track lamp |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102458012A (en) * | 2010-10-26 | 2012-05-16 | 海洋王照明科技股份有限公司 | LED stepless light-adjusting driving circuit and LED lamp |
| CN103037585A (en) * | 2012-12-21 | 2013-04-10 | 深圳桑达百利电器有限公司 | Distributed light-emitting diode (LED) lamp and drive power supply plug-in plug-out protective circuit thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102783254B (en) * | 2010-09-27 | 2015-04-01 | 三菱化学株式会社 | LED illumination appliance and LED illumination system |
| CN102510614A (en) * | 2011-10-25 | 2012-06-20 | 上海大学 | LED (light-emitting diode) multi-lamp distributed group drive system |
| CN203167350U (en) * | 2013-02-23 | 2013-08-28 | 杭州乐图光电科技有限公司 | LED drive circuit with capabilities of light modulation and color temperature adjustment |
| CN204598365U (en) * | 2015-03-09 | 2015-08-26 | 北京幻腾科技有限公司 | A kind of LED illumination device and LED lamp power driving circuit |
-
2015
- 2015-03-09 CN CN201510102978.3A patent/CN104684219B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102458012A (en) * | 2010-10-26 | 2012-05-16 | 海洋王照明科技股份有限公司 | LED stepless light-adjusting driving circuit and LED lamp |
| CN103037585A (en) * | 2012-12-21 | 2013-04-10 | 深圳桑达百利电器有限公司 | Distributed light-emitting diode (LED) lamp and drive power supply plug-in plug-out protective circuit thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104684219A (en) | 2015-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103763842B (en) | LED lamp | |
| JP3163276U (en) | LED lighting device capable of changing the hue of illumination | |
| US8669721B2 (en) | Solid state light source based lighting device and lighting system | |
| CN106686798B (en) | For driving the system and equipment of multiple great power LED units | |
| JP5214585B2 (en) | LED drive circuit, phase control dimmer, LED illumination lamp, LED illumination device, and LED illumination system | |
| CN104684219B (en) | LED lighting device and drive circuit | |
| EP2257123A1 (en) | Light emitting diode circuit | |
| EP2850916B1 (en) | Driver circuit for solid state light sources | |
| JP2019068614A (en) | Power supply system, lighting device, and illumination system | |
| JP2014160574A (en) | Led driving device and led lighting device | |
| JP3172933U (en) | LIGHT EMITTING DIODE DRIVING DEVICE AND LIGHTING EQUIPMENT USING THE SAME | |
| CN103098547A (en) | Circuit assembly and method for operating at least one LED | |
| CN202603016U (en) | Driving circuit of LED (light-emitting diode) fluorescent lamp with adjustable light | |
| CN105142282A (en) | MCU-based LED sectional type alternative conduction circuit and driving method thereof | |
| JP6373947B2 (en) | Lighting device and system in which dimmer and driver have electrically insulating structure | |
| JP2019061802A (en) | Illumination control system, lighting system, illumination system, and program | |
| Shagerdmootaab et al. | A double-loop primary-side control structure for HB-LED power regulation | |
| CN204598365U (en) | A kind of LED illumination device and LED lamp power driving circuit | |
| CN103763825A (en) | LED constant current PWM drive circuit and three-primary-color LED light mixing driving circuit | |
| KR100850249B1 (en) | Lighting dimming apparatus | |
| JP5972313B2 (en) | 3-color LED dimming lamp | |
| Cardesín et al. | Low cost intelligent LED driver for public Lighting Smart Grids | |
| CN205510466U (en) | Adjust control system of luminance and G9LED bulb thereof | |
| CN202907306U (en) | Circuit capable of realizing section regulation on LED lamp brightness | |
| RU134383U1 (en) | LED BRIGHTNESS CONTROL DEVICE |
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 | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190109 Address after: Room 33025, Shuangqing Road, Haidian District, Beijing 100085 Patentee after: BEIJING HAOHENGTIAN TECHNOLOGY Co.,Ltd. Address before: 100036 No. 2004, No. 2 Courtyard, Cuiwei Road, Haidian District, Beijing Patentee before: BEIJING PHANTOM TECHNOLOGY CO.,LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170510 |