CN202026501U - AC-drive LED lighting device - Google Patents
AC-drive LED lighting device Download PDFInfo
- Publication number
- CN202026501U CN202026501U CN2011200428711U CN201120042871U CN202026501U CN 202026501 U CN202026501 U CN 202026501U CN 2011200428711 U CN2011200428711 U CN 2011200428711U CN 201120042871 U CN201120042871 U CN 201120042871U CN 202026501 U CN202026501 U CN 202026501U
- Authority
- CN
- China
- Prior art keywords
- led lamp
- lamp pearl
- array
- section
- voltage
- 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
Images
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses an AC-drive LED lighting device, which belongs to the technical field of lighting. The AC-drive LED lighting device comprises an LED lamp bead array, an AC power supply, a protective circuit, a rectifying module and a power supply drive module, wherein the AC power supply is in one-way connection with the protective circuit and used for outputting AC to the protective circuit; the protective circuit is in one-way connection with the rectifying module and plays a protective role; the rectifying module is in one-way connection with the LED lamp bead array and used for outputting rectified AC to the LED lamp bead array; and the power supply drive module is in two-way connection with the LED lamp bead array and used for detecting the voltage and current information of the LED lamp bead array and outputting a feedback control signal to the LED lamp bead array according to the voltage and current information. The AC-drive LED lighting device solves the problems that energy waste is caused by DC power supply, and an original DC-drive LED lighting device has short service life, is difficult in integration and has a higher price.
Description
Technical field
The utility model relates to a kind of LED lighting device of LED lighting device, particularly a kind of AC driving.
Background technology
LED(Light Emitting Diode) lighting technology is called as the revolution of lighting technology for the third time after naked light and incandescent lamp.LED is a light-emitting diode, is a kind of semiconductor device that electric energy can be converted into visible light, and direct voltage is added in its positive and negative two ends, and LED just can be luminous, belongs to the cold light source category.The LED fluorescent lamp is compared with incandescent lamp, has advantages such as volume is little, brightness is high, energy-conserving and environment-protective, is widely used in fields such as general lighting, back lighting, road traffic, medical science and communication.
But along with the continuous development of LED lighting technology, the shortcoming of LED fluorescent lamp is also more and more obvious:
At first, common LED fluorescent lamp employing direct current supply, just running into inevitably to exchange changes direct current efficient problem on the low side, because technology is limit, interchange changes in the process of direct current, has the energy above 25% to be depleted.
In addition, the realization circuit of direct-current LED fluorescent lamp has generally adopted electrolytic capacity element, and the life-span of this element has only 3000 hours, therefore the useful life of having limited the LED fluorescent lamp greatly.
Moreover because common direct-current LED daylight lamp circuit complexity, therefore the board area that takies is big, is difficult for power supply, lamp pearl and drive circuit are integrated on the circuit board.
At last, common direct-current LED fluorescent lamp is because the electronic devices and components quantity of its use is many, so cost restricts by electronic device, and the price of LED fluorescent lamp is also high.
The utility model content
Goal of the invention of the present utility model is: at the problem of above-mentioned existence, provide a kind of and can improve utilization rate of electrical, increase the service life, reduce manufacturing cost and be easy to the LED lighting device of integrated AC driving.
To achieve these goals, the utility model provides a kind of LED lighting device of AC driving, it comprises the LED lamp pearl section SEG1 by N series connection, SEG2, SEGN-1, LED lamp pearl array, AC power and protective circuit that SEGN constitutes, wherein N is a positive integer, also comprise have first input end, the rectification module and the electric power driving module of second input, first output and second output, wherein AC power is connected with protective circuit is unidirectional, is used for output AC power source and gives protective circuit;
Protective circuit is connected with rectification module is unidirectional, plays protection;
Rectification module and LED lamp pearl unidirectional connection of array, the AC power that is used to export after the rectification is given LED lamp pearl array;
Electric power driving module and described LED lamp pearl two-way connection of array are used to detect the voltage and current information of LED lamp pearl array, and export feedback control signal according to voltage and current information and give LED lamp pearl array, thus the stable power supply that offers LED lamp pearl array.
In according to an embodiment of the present utility model; this protective circuit is made of fuse and piezo-resistance; wherein an end of fuse is connected with the positive pole of AC power; the other end is connected with first end of piezo-resistance; second end of piezo-resistance is connected with the negative pole of AC power; and first end of piezo-resistance also is connected with the first input end of rectification module, and second end of piezo-resistance also is connected with second input of rectification module.
In according to another embodiment of the present utility model, this rectification module is selected bridge rectifier for use, and wherein first output of rectification module is connected with the positive pole of LED lamp pearl section SEG1 in the LED lamp pearl array.
In according to another embodiment of the present utility model, electric power driving module is made of pull-up resistor array, inductive reactance array and AC power chip for driving:
This pull-up resistor array is by N pull-up resistor R1, R2 ..., RN-1, RN constitutes;
This inductive reactance array by N the series connection inductive reactance RS1, RS2 ... RSN-1, RSN constitutes, and wherein the input of inductive reactance RS1 is connected with the negative pole of LED lamp pearl section SEGN in the LED lamp pearl array, and the output of inductive reactance RSN is connected with second output of rectification module;
This AC power chip for driving comprises by N current detecting end S1, S2, SN-1, the current detecting end group that SN constitutes, wherein the input of corresponding inductive reactance is connected in each current detecting end and the inductive reactance array, and be used for detecting in real time the current information on the corresponding LED lamp of the LED lamp pearl array pearl section: current detecting end S1 is connected with the input of inductive reactance RS1, is used for detecting in real time the current information of LED lamp pearl section SEG1; Current detecting end SN is connected with the input of inductive reactance RSN, is used for detecting in real time the current information of LED lamp pearl section SEGN;
By N voltage detecting end T1, T2, TN-1, the voltage detecting end group that TN constitutes, wherein each voltage detecting end is connected with the negative pole of corresponding LED lamp pearl section respectively, is used for detecting in real time the information of voltage of the corresponding LED lamp of LED lamp pearl array pearl section: voltage detecting end T1 is connected with the negative pole of LED lamp pearl section SEG1, is used for detecting in real time the information of voltage of LED lamp pearl section SEG1; Voltage detecting end TN is connected with the negative pole of LED lamp pearl SEGN, is used for detecting in real time the information of voltage of LED lamp pearl section SEGN;
By N control end P1, P2, PN-1, the control end group that PN constitutes, wherein each control end is connected by the positive pole of pull-up resistor with corresponding LED lamp pearl section respectively, be used for exporting respectively feedback control information and give corresponding LED lamp pearl section, regulate the input power supply of corresponding LED lamp pearl section: control end P1 is connected with the positive pole of LED lamp pearl section SEG1 by pull-up resistor R1, is used to export feedback control information and gives described LED lamp pearl section SEG1, regulates the input power supply of described LED lamp pearl section SEG1; , control end PN is connected with the positive pole of LED lamp pearl section SEGN by pull-up resistor RN, is used for output and feeds back to described LED lamp pearl section SEGN, regulates the input power supply of described LED lamp pearl section SEGN; And the earth terminal that is connected with second output of this rectification module; Wherein, in the described pull-up resistor array in the quantity of pull-up resistor, the described inductive reactance array in the quantity of inductive reactance, the AC power chip for driving quantity of current detecting end, control end and voltage detecting end equal the quantity of LED lamp pearl section in the described LED lamp pearl array, N is a positive integer.
In sum, owing to adopted technique scheme, the beneficial effects of the utility model are:
1, this LED lighting device adopts AC power directly to power, and than adopting direct current supply, interchange is converted to surpasses 25% energy in the process of direct current and is consumed, and the LED lighting device in the utility model has improved the utilance of electric energy;
2, adopt protective circuit, guaranteed the security of operation of whole LED lighting device, avoid its each parts to suffer damage;
3, adopt rectification module, AC power is converted to the power supply that is more suitable for driving this LED lighting device;
4, adopt electric power driving module to stablize the input power supply of LED lamp pearl array, thereby guarantee that the reliable and stable and light-source brightness of this input power supply stablizes flicker free;
5, circuit complexity in the direct-current LED lighting device, the component parts of this LED lighting device is less, be easy to integrated and cost of manufacture lower; In addition, generally adopt electrolytic capacity element in the realization circuit of direct-current LED lighting device, the useful life of this electrolytic capacity element is shorter, thereby limited the useful life of direct-current LED lighting device greatly, and the LED lighting device of this AC driving does not adopt this kind electrolytic capacity element, has prolonged its useful life.
Description of drawings
Fig. 1 is the structural representation of the LED lighting device of this AC driving;
Fig. 2 is another structural representation of the LED lighting device of this AC driving;
Fig. 3 is according to an embodiment of the present utility model, the electrical block diagram of the LED lighting device of this AC driving;
Fig. 4 is according to another embodiment of the present utility model, only adopts the circuit diagram of LED lighting device of the AC driving of three sections LED lamp pearls.
Mark among the figure: 1 is fuse, 2 is piezo-resistance, 3 is bridge rectifier, and 4 is the AC power chip for driving, and SEG1, SEG2, SEG3～SEGN-1, SEGN are LED lamp pearl section, R1, R2, R3～RN-1, RN are pull-up resistor, RS1, RS2, RS3～RSN-1, RSN are inductive reactance, and P1, P2, P3～PN-1, PN are control end, and T1, T2, T3～TN-1, TN are the voltage detecting end, S1, S2, S3～SN-1, SN are the current detecting end, and GND is an earth terminal.
Embodiment
Below in conjunction with accompanying drawing, the utility model is done detailed explanation.
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
As shown in Figure 1, the LED lighting device of this AC driving comprises AC power, protective circuit, rectification module and LED lamp pearl array, and wherein AC power is connected with protective circuit is unidirectional, is used for output AC power source and gives protective circuit.This protective circuit plays protection in the whole LED lighting device, when the very big voltage and current of moment appearred in circuit input end, this protective circuit can be avoided its latter linked each parts are caused damage by the adjusting of self.
This protective circuit is connected with rectification module is unidirectional; and this rectification module also with LED lamp pearl unidirectional connection of array; guaranteeing that the alternating voltage of importing can not damage under the prerequisite of each parts from power supply; because exporting to the power supply of rectification module by protective circuit is alternating voltage; positive and negative variation can take place; this rectification module then plays the effect of rectification, converts the alternating voltage of positive and negative variation to unidirectional pulsating voltage, and the unidirectional pulsating voltage after the output rectification is given this LED lamp pearl array.LED lamp pearl array is luminous under the driving of unidirectional pulsating voltage.
In structure shown in Figure 1, though can realize coming the driving LED lighting device by AC power, but the AC power complete stability that can not guarantee to input to LED lamp pearl array is reliable, the brightness of LED lamp pearl array is stable inadequately sometimes consequently also the flicker situation can occur, so increased electric power driving module in Fig. 2.As shown in Figure 2, this electric power driving module and LED lamp pearl two-way connection of array, be used to detect the voltage and current information of LED lamp pearl array, and give LED lamp pearl array by analyzing and processing output feedback control information, this feedback information plays the effect of stablizing LED lamp pearl array input power supply, thereby the assurance light-source brightness is stablized flicker free.
In according to one embodiment of present invention, as shown in Figure 3, LED lamp pearl array by N the series connection LED lamp pearl section SEG1, SEG2 ..., SEGN-1, SEGN constitute, N=1 wherein, and 2 ..., N is used for representing the number of LED lamp pearl section in the LED lamp pearl array.Protective circuit is made of fuse 1 and the piezo-resistance 2 with first end and second end; wherein an end of fuse 1 is connected with the positive pole of AC power; the other end is connected with first end of piezo-resistance 2 and second end of piezo-resistance 2 is connected with the negative pole of AC power; fuse 1 forms the protection loop with piezo-resistance 2; when this current in loop is excessive; the fuse 1 of serial connection will fuse, to avoid the damage of each parts.Rectification module is selected bridge rectifier for use, it has four ports: first input end, second input, first output and second output, wherein first input end is connected with first end of piezo-resistance 2, second input is connected with second end of piezo-resistance 2, and first output is connected with the positive pole of LED lamp pearl section SEG1 in the LED lamp pearl array; This bridge rectifier utilizes the characteristic of the unidirectional conducting of diode, converts the AC power of positive and negative variation to unidirectional pulsating voltage, exports to LED lamp pearl array.
And, electric power driving module is made of pull-up resistor array R, inductive reactance array RS and alternating voltage chip for driving 4, wherein among the pull-up resistor array R among pull-up resistor and the inductive reactance array RS number of inductive reactance equate with the number of LED lamp pearl section in the LED lamp pearl array, be N, wherein N is a positive integer:
Pull-up resistor array R is by N pull-up resistor R1, R2 ..., RN-1, RN constitutes;
Inductive reactance array RS by N the series connection inductive reactance RS1, RS2 ... RSN-1, RSN constitutes, and wherein the input of inductive reactance RS1 is connected with the negative pole of LED lamp pearl section SEGN in the described LED lamp pearl array, and the output of inductive reactance RSN is connected with second output of rectification module;
AC power chip for driving 4 comprises current detecting end group, voltage detecting end group, control end group and earth terminal, and wherein the number of these three groups of ports equals the number of LED lamp pearl section in the LED lamp pearl array.This current detecting end group is by N current detecting end S1, S2 ..., SN-1, SN constitute, N=1 wherein, and 2 ..., N.The input of corresponding inductive reactance is connected among each current detecting end and the inductive reactance array RS, be respectively applied for the voltage and current information of corresponding LED lamp pearl section in the real-time detection LED lamp pearl array: current detecting end S1 is connected with the input of inductive reactance RS1, is used for detecting in real time the current information of LED lamp pearl section SEG1; Current detecting end S2 is connected with the input of inductive reactance RS2, is used for detecting in real time the current information of LED lamp pearl section SEG2; By that analogy, current detecting end SN is connected with the input of inductive reactance RSN, is used to detect the current information of LED lamp pearl section SEGN.It should be noted that the resistance value of each inductive reactance among the inductive reactance array RS is according to the difference of the length of each LED lamp pearl section in the LED lamp pearl array and difference.Generally speaking, all adopt the LED lamp pearl section of equal length in the LED lamp pearl array, its resistance size is relevant with the number of LED lamp pearl section in the LED lamp pearl array.
This voltage detecting end group is by N voltage detecting end T1, T2 ..., TN-1, TN constitute, N=1 wherein, and 2 ..., N.The voltage detecting end is connected with the negative pole of corresponding LED lamp pearl section respectively, and be used for detecting in real time the information of voltage of corresponding LED lamp pearl section: voltage detecting end T1 is connected with the negative pole of LED lamp pearl section SEG1, is used for detecting in real time the information of voltage of this LED lamp pearl section SEG1; Voltage detecting end T2 is connected with the negative pole of LED lamp pearl section SEG2, is used for detecting in real time the information of voltage of this LED lamp pearl section SEG2; Voltage detecting end TN is connected with the negative pole of LED lamp pearl section SEGN, is used for detecting in real time the information of voltage of this LED lamp pearl section SEGN.
This control end group is by N control end P1, P2 ..., PN-1, PN constitute, N=1 wherein, and 2 ..., N.Control end is connected with the positive pole of corresponding LED lamp pearl section by the pull-up resistor of correspondence respectively, be used for current information and information of voltage according to current detecting end and detected each the LED lamp pearl section of voltage detecting end difference, the output feedback control information is given corresponding LED lamp pearl section, play the effect of stablizing each LED lamp pearl input power supply: control end P1 is connected with the positive pole of LED lamp pearl section SEG1 by pull-up resistor R1, be used to export feedback control information and give LED lamp pearl section SEG1, play the effect of stablizing LED lamp pearl section SEG1 input power supply; Control end P2 is connected with the positive pole of LED lamp pearl section SEG2 by pull-up resistor R2, is used to export feedback control signal and exports to LED lamp pearl section SEG2, plays the effect of stablizing LED lamp pearl section SEG2 input power supply; By that analogy, control end PN is connected with the positive pole of LED lamp pearl section SEGN by pull-up resistor RN, is used for output feedback signal and exports to LED lamp pearl section SEGN, plays the effect of stablizing LED lamp pearl section SEGN input power supply.
In according to another embodiment of the present utility model, this LED lighting device only adopts three sections LED lamp pearl SEG1, SEG2 and SEG3 to realize illumination, then the AC power chip for driving in the electric power driving module is selected the chip that only has three current detecting ends, voltage detecting end and control end respectively for use, as shown in Figure 4.Three current detecting end S1, S2 and S3 are arranged, three control end P1, P2 and P3, three voltage detecting end T1, T2 and T3 in this AC power chip for driving respectively; Accordingly, pull-up resistor is three R1, R2 and R3, and inductive reactance is three RS1, RS2 and RS3.Current detecting end S1, S2 are connected with the input of inductive reactance RS1, RS2 and RS3 respectively with S3, are used for detecting respectively the voltage and current information of LED lamp pearl section SEG1, SEG2 and SEG3; Control end P1, P2 are connected with the positive pole of LED lamp pearl section SEG1, SEG2 and SEG3 respectively with R3 by pull-up resistor R1, R2 respectively with P3, and voltage detecting end T1, T2 are connected with the negative pole of LED lamp pearl section SEG1, SEG2 and SEG3 respectively with T3, are used for stablizing respectively the input power supply of LED lamp pearl section SEG1, SEG2 and SEG3.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (4)
1. the LED lighting device of an AC driving, comprise LED lamp pearl section SEG1 by N series connection, SEG2,, SEGN-1, LED lamp pearl array, AC power and protective circuit that SEGN constitutes, wherein N is a positive integer, it is characterized in that: also comprise have first input end, the rectification module and the electric power driving module of second input, first output and second output, wherein said AC power is connected with described protective circuit, is used for the output AC electricity and gives described protective circuit;
Described protective circuit is connected with described rectification module, plays protection;
Described rectification module is connected with described LED lamp pearl array, and the alternating current that is used to export after the rectification is given described LED lamp pearl array;
Described electric power driving module and described LED lamp pearl two-way connection of array, be used to detect the voltage and current information of described LED lamp pearl array, and give described LED lamp pearl array, thereby the stable power supply that offers described LED lamp pearl array according to described voltage and current information output feedback control signal.
2. the LED lighting device of AC driving as claimed in claim 1; it is characterized in that: described protective circuit is made of fuse and piezo-resistance; one end of wherein said fuse is connected with the positive pole of described AC power; the other end is connected with first end of described piezo-resistance; second end of described piezo-resistance is connected with the negative pole of described AC power; and first end of described piezo-resistance also is connected with the first input end of described rectification module, and second end of described piezo-resistance also is connected with second input of described rectification module.
3. the LED lighting device of AC driving as claimed in claim 1, it is characterized in that: described rectification module is selected bridge rectifier for use, and first output of wherein said rectification module is connected with the positive pole of LED lamp pearl section SEG1 in the described LED lamp pearl array.
4. the LED lighting device of AC driving as claimed in claim 1, it is characterized in that: described electric power driving module is made of pull-up resistor array, inductive reactance array and AC power chip for driving:
Described pull-up resistor array is by N pull-up resistor R1, R2 ..., RN-1, RN constitutes;
Described inductive reactance array is by the inductive reactance RS1 of N series connection, RS2, RSN-1, RSN constitutes, wherein the input of inductive reactance RS1 is connected with the negative pole of LED lamp pearl section SEGN in the described LED lamp pearl array, and the output of inductive reactance RSN is connected with second output of described rectification module;
Described AC power chip for driving comprises by N current detecting end S1, S2, SN-1, the current detecting end group that SN constitutes, wherein the input of corresponding inductive reactance is connected in each current detecting end and the described inductive reactance array, and be used for detecting in real time the current information of the corresponding LED lamp of described LED lamp pearl array pearl: current detecting end S1 is connected with the input of inductive reactance RS1, is used for detecting in real time the current information of described LED lamp pearl section SEG1; Current detecting end SN is connected with the input of inductive reactance RSN, is used for detecting in real time the current information of described LED lamp pearl section SEGN;
By N voltage detecting end T1, T2, TN-1, the voltage detecting end group that TN constitutes, wherein each voltage detecting end is connected with the negative pole of corresponding LED lamp pearl section respectively, and be used for detecting in real time the information of voltage of the corresponding LED lamp of described LED lamp pearl array pearl section: voltage detecting end T1 is connected with the negative pole of LED lamp pearl section SEG1, is used for detecting in real time the information of voltage of described LED lamp pearl section SEG1; Voltage detecting end TN is connected with the negative pole of LED lamp pearl section SEGN, is used for detecting in real time the information of voltage of described LED lamp pearl section SEGN;
By N control end P1, P2, PN-1, the control end group that PN constitutes, wherein each control end is connected by the positive pole of described pull-up resistor with corresponding LED lamp pearl section respectively, be used for exporting respectively feedback control information and give corresponding LED lamp pearl section, regulate the input power supply of corresponding LED lamp pearl section: control end P1 is connected with the positive pole of LED lamp pearl section SEG1 by pull-up resistor R1, is used to export feedback control information and gives described LED lamp pearl section SEG1, regulates the input power supply of described LED lamp pearl section SEG1; , control end PN is connected with the positive pole of LED lamp pearl section SEGN by pull-up resistor RN, is used for output and feeds back to described LED lamp pearl section SEGN, regulates the input power supply of described LED lamp pearl section SEGN;
And the earth terminal that is connected with second output of described rectification module;
Wherein, in the described pull-up resistor array in the quantity of pull-up resistor, the described inductive reactance array in the quantity of inductive reactance, the described AC power chip for driving quantity of current detecting end, control end and voltage detecting end equal the quantity of LED lamp pearl section in the described LED lamp pearl array, N is a positive integer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200428711U CN202026501U (en) | 2011-02-21 | 2011-02-21 | AC-drive LED lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200428711U CN202026501U (en) | 2011-02-21 | 2011-02-21 | AC-drive LED lighting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202026501U true CN202026501U (en) | 2011-11-02 |
Family
ID=44851432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200428711U Expired - Fee Related CN202026501U (en) | 2011-02-21 | 2011-02-21 | AC-drive LED lighting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202026501U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102711329A (en) * | 2012-05-31 | 2012-10-03 | 宁波福泰电器有限公司 | Self-adaptive LED (light emitting diode) fluorescent lamp |
| WO2015014192A1 (en) * | 2013-07-31 | 2015-02-05 | 深圳市晟碟半导体有限公司 | Dynamic configuration for subsection led driving device and led illumination device |
| WO2015070361A1 (en) * | 2013-11-15 | 2015-05-21 | 钰瀚科技股份有限公司 | Led illuminating device using multiphase alternating current power supply |
-
2011
- 2011-02-21 CN CN2011200428711U patent/CN202026501U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102711329A (en) * | 2012-05-31 | 2012-10-03 | 宁波福泰电器有限公司 | Self-adaptive LED (light emitting diode) fluorescent lamp |
| CN102711329B (en) * | 2012-05-31 | 2014-07-09 | 宁波福泰电器有限公司 | Self-adaptive LED (light emitting diode) fluorescent lamp |
| WO2015014192A1 (en) * | 2013-07-31 | 2015-02-05 | 深圳市晟碟半导体有限公司 | Dynamic configuration for subsection led driving device and led illumination device |
| WO2015070361A1 (en) * | 2013-11-15 | 2015-05-21 | 钰瀚科技股份有限公司 | Led illuminating device using multiphase alternating current power supply |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103582241A (en) | Light emitting device | |
| CN201274590Y (en) | LED driving apparatus using commercial power | |
| CN202026501U (en) | AC-drive LED lighting device | |
| CN101883463A (en) | Constant-current AC LED (Alternating Current Light Emitting Diode) lighting circuit | |
| CN201550315U (en) | LED driving circuit | |
| CN202143243U (en) | AC commercial power LED illuminating lamp drive circuit | |
| CN201651870U (en) | Alternating current energy-saving LED illuminating lamp | |
| CN102098849B (en) | Light-emitting diode (LED) driving chip | |
| US20120049751A1 (en) | Transformer-free led lighting device directly utilizing the ac power from city electricity | |
| CN201904959U (en) | LED drive circuit with long service life | |
| CN201297596Y (en) | AC light-emitting device | |
| CN201237183Y (en) | LED lamp without driving circuit | |
| CN201731335U (en) | Alternating current direct-drive LED lamp tube | |
| CN201902851U (en) | LED (light-emitting diode) fluorescent lamp | |
| CN201462537U (en) | Novel LED miniature bulb string | |
| CN202769388U (en) | Led lamp tube | |
| CN203206545U (en) | AC-drive infrared induction LED lamp | |
| CN202475885U (en) | Bidirectional constant-current circuit integrated module | |
| CN205921797U (en) | Adopt LED lamp of high -pressure linear constant current source power supply | |
| CN103574343A (en) | Led lamp tube | |
| CN202005039U (en) | Light-emitting diode (LED) device | |
| CN208258129U (en) | A kind of linear LED driver of compatible multiple voltage standard | |
| CN103687209A (en) | Alternating-current drive circuit of LED streetlight | |
| CN103079312B (en) | Method for enabling parallel circuit in series circuit | |
| CN203279285U (en) | Balance bridge type LED module drive circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111102 Termination date: 20170221 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |