CN202799327U - AC LED fluorescent tube and drive control device thereof - Google Patents
AC LED fluorescent tube and drive control device thereof Download PDFInfo
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- CN202799327U CN202799327U CN2012205034621U CN201220503462U CN202799327U CN 202799327 U CN202799327 U CN 202799327U CN 2012205034621 U CN2012205034621 U CN 2012205034621U CN 201220503462 U CN201220503462 U CN 201220503462U CN 202799327 U CN202799327 U CN 202799327U
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- 230000001681 protective effect Effects 0.000 claims abstract description 24
- 239000004065 semiconductor Substances 0.000 claims description 13
- 239000003990 capacitor Substances 0.000 claims description 8
- 239000003381 stabilizer Substances 0.000 claims description 5
- 230000000052 comparative effect Effects 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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- 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
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses an AC LED fluorescent tube and a drive control device thereof, and belongs to an LED luminaire. The drive control device comprises an LED drive module and an overvoltage protection module. The LED drive module comprises a rectifier bridge used to convert AC to DC and input the DC to an LED, a protective tube disposed between a front end of the rectifier bridge and an AC input end, a current-limiting resistor disposed between a rear end and the LED, and a piezoresistor connected in parallel between the rectifier bridge and the protective tube. Without using a complicated drive circuit, the drive control device directly uses common electronic devices to form the simple drive module and the overvoltage protection module, so that an AC LED fluorescent lamp can normally operate under voltage which is higher than a rated operational voltage without damaging an LED light source, and meanwhile the circuit does not use large volume devices and limited life devices, and the drive control device takes up very little space. The AC LED fluorescent tube provided in the utility model has simple structure, and is relatively suitable for industrialized volume production and easy to popularize.
Description
Technical field
The utility model relates to a kind of LED light fixture, and in particular, the utility model relates generally to a kind of alternating-current LED fluorescent lamp pipe and driving control device thereof.
Background technology
At present, replace just gradually the conventional fluorescent fluorescent tube take energy-efficient, environmental protection, the LED fluorescent lamp of long-life as characteristics, become the first-selection of the commercial lightings such as megastore, supermarket, office space.It mainly adopts the Switching Power Supply Driving technique of comparative maturity, and its advantage is that operating current is stable, but the reliability of Switching Power Supply is the main factor that affects the LED fluorescent lifetime.Fast development along with the LED lighting technology, some new application technologies, scheme are also continuing to bring out, such as alternating-current LED fluorescent lamp, this lamp major advantage is that drive circuit is simple, electrical efficiency is high, total cost is low, without the age limit device etc., but alternating-current LED fluorescent lamp simultaneously also with some without avoidable technological deficiency.Because being applied to the lamp pearl of alternating-current LED fluorescent lamp also is a common semiconductor device that converts electrical energy into luminous energy from essence, so it is to surpassing in the situation of specified input voltage at input voltage, the electric current that flows through LED can sharply rise, and causes LED lamp pearl to damage.Although also there are some schemes can solve foregoing problems, as: to LED lamp string, perhaps arrive LED lamp string by shunt regulator tube by the series connection current regulator diode, current regulator diode, voltage-stabiliser tube can reduce drive efficiency greatly when work; At present also some is specifically designed to AC LED and with the control chip of over-voltage protecting function on the market, but its price is high, and on the market also bad buying.Therefore; for guaranteeing in the former advantageous situation of alternating-current LED fluorescent lamp; the electric current of LED lamp pearl is flow through in control when realizing the input overvoltage; reach the purpose of guard lamp pearl; wanting simultaneously can simple realization; and batch production based on this kind demand, is necessary structure and the drive control part thereof of alternating-current LED fluorescent lamp are done further improvement easily.
The utility model content
One of the purpose of this utility model is to solve above-mentioned deficiency, a kind of alternating-current LED fluorescent lamp pipe and driving control device thereof are provided, cause led light source to damage in the situation of specified input voltage to expect that alternating current LED lamp surpasses at input voltage in the solution prior art, in drive part, set up components and parts and easily reduce drive efficiency, and the special integrated circuit use cost is than the high-technology problem.
For solving above-mentioned technical problem, the utility model by the following technical solutions:
The utility model provides a kind of AC LED driving control device on the one hand, comprise LED driver module and overvoltage protective module, described LED driver module comprises for alternating current is converted to direct current, and the rectifier bridge of input LED, and access protective tube between rectifier bridge front end and the alternating current input, access current-limiting resistance between rear end and the LED, piezo-resistance in parallel also between described rectifier bridge and the protective tube; Comprise in the described overvoltage protective module: be connected to the rectifier bridge output plus terminal, be used to the overvoltage protective module backend unit that the source of stable pressure unit of steady voltage source is provided; Be used for providing to the overvoltage protective module backend unit reference voltage unit of reference voltage; Be used for gathering the rectifier bridge output voltage signal, thereby draw the voltage acquisition unit of the alternating voltage situation of change of input rectifying bridge; The voltage that is used for reference voltage unit is provided, compare with the voltage that the voltage sample unit provides, control the control unit that flows through the LED electric current according to comparative result.
As preferably, further technical scheme is: comprise control chip and metal-oxide-semiconductor in the described control unit, control chip is used for flowing through by metal-oxide-semiconductor control the size of current of LED by metal-oxide-semiconductor road access LED.
Further technical scheme is: comprise the resistance R 3, resistance R 4, diode D1, voltage-stabiliser tube Z1 and the capacitor C 1 that connect successively in the described source of stable pressure unit.
Further technical scheme is: described reference voltage unit is connected in rear end, source of stable pressure unit in parallel, comprises the resistance R 5, the resistance R 8 and capacitor C 2 that connect successively.
Further technical scheme is: described voltage acquisition unit comprises resistance R 2, resistance R 6, the resistance R 7 that is connected to reference voltage unit rear end and access control unit.
The utility model also provides a kind of alternating-current LED fluorescent lamp pipe on the other hand, it is characterized in that: described alternating arc lamp pipe comprises above-mentioned AC LED driving control device.
As preferably, further technical scheme is: described LED fluorescent tube also comprises lamp socket, insulative, light source circuit board, led light source and radiator, the both sides that described lamp socket is fixed on insulative make it the inner confined space that forms, described led light source is fixed on the light source circuit board, and place the confined space of insulative inside, and described light source circuit board is incoming transport LED driving control device also, and the alternating current input of AC LED driving control device is drawn by wire.
Further technical scheme is: the arranged outside of described lamp socket has the electrode contact pin, and the AC LED driving control device accesses this electrode contact pin by wire.
Further technical scheme is: described radiator also is arranged in the confined space of insulative inside, and places the below of light source circuit board to contact with it.
Further technical scheme is: the length of described radiator is more than or equal to the length of light source circuit board, and the cross section of radiator and light source circuit board is light source circuit board by radiator half coating.
Further technical scheme is: described led light source is welding in the fixing mode of light source circuit board.
Further technical scheme is: described radiator is the strip section shape.
Further technical scheme is: described LED driving control device also places the confined space of insulative inside, and is installed in the below of radiator.
Compared with prior art; one of the beneficial effects of the utility model are: in the situation that does not adopt complicated drive circuit; directly adopt electronic device commonly used to form simple mould and the overvoltage protective module of driving; realize that alternating-current LED fluorescent lamp is being higher than in the situation of rated operational voltage and can working; and do not damage led light source; do not adopt large volume device and age limit device in the circuit simultaneously, driving control device takes up room minimum.And the alternating-current LED fluorescent lamp pipe adopts high-intensity double-colored insulative as shell, can prevent effectively that human body from touching band point device, increased the fail safe in the alternating-current LED fluorescent lamp use procedure greatly.A kind of alternating-current LED fluorescent lamp tubular construction provided by the utility model is simple simultaneously, is suitable for industrialized mass production, is easy to promote.
Description of drawings
Fig. 1 is for being used for the structural representation of an embodiment of explanation the utility model;
Fig. 2 is for being used for the structural representation of another embodiment of explanation the utility model;
Fig. 3 is the A-A profile of Fig. 1;
Embodiment
Below in conjunction with accompanying drawing the utility model is further elaborated.
Fig. 1 shows the electrical block diagram of an embodiment of the utility model, with reference to shown in Figure 1, an embodiment of the present utility model is a kind of AC LED driving control device, comprise LED driver module 1 and overvoltage protective module 2, described LED driver module 1 comprises for alternating current is converted to direct current, and the rectifier bridge of input LED, and access protective tube between rectifier bridge front end and the alternating current input, access current-limiting resistance between rear end and the LED, piezo-resistance in parallel also between described rectifier bridge and the protective tube; Comprise in the described overvoltage protective module 2: be connected to the rectifier bridge output plus terminal, be used to overvoltage protective module 2 backend unit that the source of stable pressure unit 21 of steady voltage source is provided;
Be used for providing to overvoltage protective module 2 backend unit the reference voltage unit 22 of reference voltage;
Be used for gathering the rectifier bridge output voltage signal, thereby draw the voltage acquisition unit 23 of the alternating voltage situation of change of input rectifying bridge;
The voltage that is used for reference voltage unit 22 is provided, compare with the voltage that the voltage sample unit provides, control the control unit 24 that flows through the LED electric current according to comparative result.
The utility model is on above-mentioned basis for the embodiment that the technical solution problem is more preferably, control chip and metal-oxide-semiconductor are set in control unit 24, and control chip is used for flowing through by metal-oxide-semiconductor control the size of current of LED by metal-oxide-semiconductor road access LED.And setting connects successively in source of stable pressure unit 21 resistance R 3, resistance R 4, diode D1, voltage-stabiliser tube Z1 and capacitor C 1.
More specifically, above-mentioned reference voltage unit 22 is connected in 21 rear ends, source of stable pressure unit in parallel, and its inside is provided with resistance R 5, the resistance R 8 and capacitor C 2 that connects successively.In addition, be provided with the rear end that is connected to reference voltage unit 22 and resistance R 2, resistance R 6, the resistance R 7 of access control unit 24 in the voltage acquisition unit in above-described embodiment 23.
In addition, do more detailed being described below based on the components and parts of mentioning in above-described embodiment again: again referring to shown in Figure 1, LED driver module 1 and overvoltage protective module 2 that the AC LED driving control device arranges, the 220V alternating current enters into rectifier bridge BD1 by 0.5A/250V protective tube F1, and at input piezo-resistance RV1 in parallel, rectifier bridge BD1 output plus terminal connects a current-limiting resistance R1, connect led light source behind the current-limiting resistance R1, metal-oxide-semiconductor Q1 of led light source rear end series connection, metal-oxide-semiconductor Q1S pin is connected to the rectifier bridge negative terminal; While rectifier bridge output plus terminal is contact resistance R3, resistance R 4, diode D1,15V voltage-stabiliser tube Z1, capacitor C 1 successively, form source of stable pressure unit 21, resistance R 5, resistance R 8, capacitor C 2 form reference voltage unit 22, resistance R 2, resistance R 6 form voltage sample unit 23, control IC(model: LM258) U1 and metal-oxide-semiconductor (model: 1N60) Q1 composition control unit 24.
Simultaneously for making the easier realization the utility model of those of ordinary skill in the art, based on the utility model the above embodiments, again operation principle of the present utility model is described in detail as follows, its concrete control step is with reference to shown in Figure 1, the 220V alternating current can prevent surge current and high pulse voltage in the electrical network by piezo-resistance RV1 in parallel behind the protective tube F1; Flow into again rectifier bridge BD1, alternating current is converted to direct current; Enter again current-limiting resistance R1, prevent the excessive puncture lamp of electric current pearl (being led light source); Source of stable pressure unit 21 is connected to rectifier bridge BD1 output plus terminal, can provide stable voltage source for rear end reference voltage unit 22 and control unit 24; Voltage acquisition unit 23 gathers rectifier bridge BD1 output voltage signal, thereby draws the situation of change of input P1 alternating voltage; The voltage ratio that control unit 24 provides by voltage that reference voltage unit 22 is provided and voltage sample unit 23, the electric current of led light source is flow through in control, prevent from causing the electric current that flows through led light source to become large because input ac voltage raises, guarantee that led light source is not breakdown.
Above-described embodiment of the present utility model has been introduced the AC LED driving control device of one of key technology means of the utility model technical solution problem, based on above-described embodiment, the utility model also provides its a kind of application, can be considered is the extension embodiment of another type of the utility model, with reference to figure 2 and shown in Figure 3, this kind embodiment of the present utility model is a kind of alternating-current LED fluorescent lamp pipe, and this alternating arc lamp pipe comprises the AC LED driving control device in above-described embodiment.
And according to the technical scheme of above-described embodiment, comparatively using a comparatively concrete embodiment about the AC LED driving control device is: lamp socket 3, insulative 4, light source circuit board 5, led light source 6 and radiator 7 are set in above-mentioned LED fluorescent tube, the both sides that lamp socket 3 are fixed on insulative 4 make it the inner confined space that forms, and led light source 6 is fixed on the light source circuit board 5, and place the confined space of insulative 4 inside, and led light source 6 fixing modes are preferably welding.And described light source circuit board 5 is gone back incoming transport LED driving control device 8, and the alternating current input of AC LED driving control device 8 is drawn by wire.
Except the above embodiments, the relevant LED fluorescent tube of the utility model can also be done following improvement, still can be considered the different one or more embodiment of the utility model, the arranged outside of above-mentioned lamp socket 3 has electrode contact pin 9, and AC LED driving control device 8 accesses this electrode contact pin 9 by wire.And above-mentioned radiator 7 also is arranged in the confined space of insulative 4 inside, and places the below of light source circuit board 5 to contact with it.The length of while radiator 7 is more than or equal to the length of light source circuit board 5, and the cross section of radiator 7 and light source circuit board 5 is light source circuit board 5 by radiator 7 half coatings.With reference to shown in Figure 2, above-mentioned radiator 7 can be set to the strip section shape again.The radiator 7 of this kind shape can be installed in above-mentioned LED driving control device the below of radiator 7, and is placed in the confined space of insulative 4 inside.
In addition, also need to prove, " embodiment " who speaks of in this manual, " another embodiment ", " embodiment ", etc., refer to specific features, structure or the characteristics described in conjunction with this embodiment and be included among at least one embodiment that the application's generality describes.A plurality of local appearance statement of the same race is not necessarily to refer to same embodiment in specification.Furthermore, when describing a specific features, structure or characteristics in conjunction with arbitrary embodiment, what advocate is to realize that in conjunction with other embodiment this feature, structure or characteristics also drop in the scope of the present utility model.
Although with reference to a plurality of explanatory embodiment of the present utility model the utility model is described here, but, should be appreciated that, those skilled in the art can design a lot of other modification and execution modes, and these are revised and execution mode will drop within the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to building block and/or the layout of subject combination layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes also will be obvious.
Claims (14)
1. AC LED driving control device, comprise LED driver module (1) and overvoltage protective module (2), it is characterized in that: described LED driver module (1) comprises for alternating current is converted to direct current, and the rectifier bridge of input LED, and access protective tube between rectifier bridge front end and the alternating current input, access current-limiting resistance between rear end and the LED, piezo-resistance in parallel also between described rectifier bridge and the protective tube; Described overvoltage protective module comprises in (2): be connected to the rectifier bridge output plus terminal, be used to overvoltage protective module (2) backend unit that the source of stable pressure unit (21) of steady voltage source is provided;
Be used for providing to overvoltage protective module (2) backend unit the reference voltage unit (22) of reference voltage; Be used for gathering the rectifier bridge output voltage signal, thereby draw the voltage acquisition unit (23) of the alternating voltage situation of change of input rectifying bridge;
The voltage that is used for reference voltage unit (22) is provided, compare with the voltage that the voltage sample unit provides, control the control unit (24) that flows through the LED electric current according to comparative result.
2. AC LED driving control device according to claim 1, it is characterized in that: described control unit comprises control chip and metal-oxide-semiconductor in (24), control chip is used for flowing through by metal-oxide-semiconductor control the size of current of LED by metal-oxide-semiconductor road access LED.
3. AC LED driving control device according to claim 1 and 2 is characterized in that: comprise the resistance R 3, resistance R 4, diode D1, voltage-stabiliser tube Z1 and the capacitor C 1 that connect successively in the described source of stable pressure unit (21).
4. AC LED driving control device according to claim 3, it is characterized in that: described reference voltage unit (22) is connected in rear end, source of stable pressure unit (21) in parallel, comprises the resistance R 5, the resistance R 8 and capacitor C 2 that connect successively.
5. AC LED driving control device according to claim 1, it is characterized in that: described voltage acquisition unit (23) comprises resistance R 2, resistance R 6, the resistance R 7 that is connected to reference voltage unit (22) rear end and access control unit (24).
6. alternating-current LED fluorescent lamp pipe, it is characterized in that: described alternating arc lamp pipe comprises the described AC LED driving control device of claim 1 to 5.
7. alternating-current LED fluorescent lamp pipe according to claim 6, it is characterized in that: described LED fluorescent tube also comprises lamp socket (3), insulative (4), light source circuit board (5), led light source (6) and radiator (7), the both sides that described lamp socket (3) is fixed on insulative (4) make it the inner confined space that forms, described led light source (6) is fixed on the light source circuit board (5), and places the inner confined space of insulative (4).
8. alternating-current LED fluorescent lamp pipe according to claim 7, it is characterized in that: described and described light source circuit board (5) is gone back incoming transport LED driving control device (8), and the alternating current input of AC LED driving control device (8) is drawn by wire.
9. alternating-current LED fluorescent lamp pipe according to claim 8, it is characterized in that: the arranged outside of described lamp socket (3) has electrode contact pin (9), and AC LED driving control device (8) accesses this electrode contact pin (9) by wire.
10. according to claim 7 to the described alternating-current LED fluorescent lamp pipe of 9 any claims, it is characterized in that: described radiator (7) also is arranged in the inner confined space of insulative (4), and places the below of light source circuit board (5) to contact with it.
11. alternating-current LED fluorescent lamp pipe according to claim 10, it is characterized in that: the length of described radiator (7) is more than or equal to the length of light source circuit board (5), and the cross section of radiator (7) and light source circuit board (5) is light source circuit board (5) by radiator (7) half coating.
12. alternating-current LED fluorescent lamp pipe according to claim 7 is characterized in that: described led light source (6) is welding in the fixing mode of light source circuit board (5).
13. alternating-current LED fluorescent lamp pipe according to claim 7 is characterized in that: described radiator (7) is the strip section shape.
14. alternating-current LED fluorescent lamp pipe according to claim 7 is characterized in that: described LED driving control device also places the inner confined space of insulative (4), and is installed in the below of radiator (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205034621U CN202799327U (en) | 2012-09-28 | 2012-09-28 | AC LED fluorescent tube and drive control device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205034621U CN202799327U (en) | 2012-09-28 | 2012-09-28 | AC LED fluorescent tube and drive control device thereof |
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| Publication Number | Publication Date |
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| CN202799327U true CN202799327U (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012205034621U Expired - Lifetime CN202799327U (en) | 2012-09-28 | 2012-09-28 | AC LED fluorescent tube and drive control device thereof |
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| CN (1) | CN202799327U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104602401A (en) * | 2013-12-27 | 2015-05-06 | 谢维哲 | LED lamp tube device similar to fluorescent lamp tube |
| CN104806988A (en) * | 2015-03-25 | 2015-07-29 | 蒋小明 | Integral encapsulation light-emitting module of ACLED (Alternating Current Light Emitting Diode) |
-
2012
- 2012-09-28 CN CN2012205034621U patent/CN202799327U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104602401A (en) * | 2013-12-27 | 2015-05-06 | 谢维哲 | LED lamp tube device similar to fluorescent lamp tube |
| CN104602401B (en) * | 2013-12-27 | 2018-12-04 | 庄明哲 | LED lamp tube device similar to fluorescent lamp tube |
| CN104806988A (en) * | 2015-03-25 | 2015-07-29 | 蒋小明 | Integral encapsulation light-emitting module of ACLED (Alternating Current Light Emitting Diode) |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: AC LED fluorescent tube and drive control device thereof Effective date of registration: 20140930 Granted publication date: 20130313 Pledgee: The Agricultural Bank of Chengdu branch of Limited by Share Ltd. Chinese Sichuan Pledgor: SICHUAN SUNFOR LIGHT Co.,Ltd. Registration number: 2014510000025 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20150401 Granted publication date: 20130313 Pledgee: The Agricultural Bank of Chengdu branch of Limited by Share Ltd. Chinese Sichuan Pledgor: SICHUAN SUNFOR LIGHT Co.,Ltd. Registration number: 2014510000025 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: AC LED fluorescent tube and drive control device thereof Effective date of registration: 20150403 Granted publication date: 20130313 Pledgee: The Agricultural Bank of Chengdu branch of Limited by Share Ltd. Chinese Sichuan Pledgor: SICHUAN SUNFOR LIGHT Co.,Ltd. Registration number: 2015510000012 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20170814 Granted publication date: 20130313 Pledgee: The Agricultural Bank of Chengdu branch of Limited by Share Ltd. Chinese Sichuan Pledgor: SICHUAN SUNFOR LIGHT Co.,Ltd. Registration number: 2015510000012 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: AC LED fluorescent tube and drive control device thereof Effective date of registration: 20180206 Granted publication date: 20130313 Pledgee: SICHUAN ENERGY INDUSTRY INVESTMENT GROUP CO.,LTD. Pledgor: SICHUAN SUNFOR LIGHT Co.,Ltd. Registration number: 2018510000013 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20190402 Granted publication date: 20130313 Pledgee: SICHUAN ENERGY INDUSTRY INVESTMENT GROUP CO.,LTD. Pledgor: SICHUAN SUNFOR LIGHT Co.,Ltd. Registration number: 2018510000013 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: AC LED fluorescent tube and drive control device thereof Effective date of registration: 20190408 Granted publication date: 20130313 Pledgee: SICHUAN ENERGY INDUSTRY INVESTMENT GROUP CO.,LTD. Pledgor: SICHUAN SUNFOR LIGHT Co.,Ltd. Registration number: 2019510000043 |
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| CX01 | Expiry of patent term |
Granted publication date: 20130313 |
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| CX01 | Expiry of patent term |