CN2739914Y - Superhigh brightness LED booster driving device - Google Patents
Superhigh brightness LED booster driving device Download PDFInfo
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- CN2739914Y CN2739914Y CN200420073928.4U CN200420073928U CN2739914Y CN 2739914 Y CN2739914 Y CN 2739914Y CN 200420073928 U CN200420073928 U CN 200420073928U CN 2739914 Y CN2739914 Y CN 2739914Y
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Abstract
The utility model relates to a super high brightness LED booster driving device which is provided with a casing, a switch, an energy source and a series resistor. The transformer is provided with a first coil, at least one group of secondary coil, triodes, the number of which is identical to the coil group number of the secondary coil, a rectifying diode, a storage capacitor and a Zener LED assembly. One end of the first coil of the transformer and one end of the secondary coil of the transformer are connected with the power. The other end of the first coil of the transformer is connected with a resistor. The other end of the resistor is connected with the base electrode of the triodes. The other end of the secondary coil of the transformer is connected with a collector. The rectifying diode is respectively connected with the collector and the storage capacitor. The other end of the storage capacitor is connected with an emitter and the power. The storage capacitor is connected in parallel with the Zener diode, and the storage capacitor is externally connected with the LED. The utility model provides the modern developing super high brightness LED with a strong LED output light intensity thin DC booster driving device with small size and light quality. The utility model does not need to adopt the high cost integrated circuit, and can be widely used for various lighting fittings.
Description
Technical field
The utility model relates to a kind of supercharging drive unit, especially a kind of superhigh brightness LED (LED) direct current supercharging drive unit that is used for.
Background technology
Conventional portable photophore (the most general is flashlight) is made up of four major parts basically, i.e. power supply (as primary cell, secondary cell, solar cell or other energy conversion equipments etc.), switch, reflector and lighting source.This four part is encapsulated in a portable integral body by different way or separates in the utensil.Go up use if the illumination light-emitting device is designed to be worn over head, flashlight just develops into head lamp, can use for miner, maintenance mans, exploration person, diver or dentist.
The lighting source that the tradition photophore adopts generally is filament bulb (as incandescent lamp, krypton lamp, Halogen lamp LED and xenon lamp etc.), fluorescent lamp, arc lamp or plasma lamp etc.The light source of filament bulb is mainly by tiny and fragile filament, its temperature reach a certain height and heat-transform light energy takes place.Provided and the electric energy of the filament of flowing through has only very that fraction is converted into luminous energy and luminous lighting by battery, most of electric energy (as 80%～90%) slatterns with the form of heat energy, the useful life of filament also very short (as 500～1000 hours).
White superhigh brightness LED as the 4th generation lighting source show up prominently.White LED has low voltage drive, low-power consumption, economic security, small-sized light and handy, no filament, anti-vibration, life-span length, temperature stabilization, reliability height, masstone, high-effect, advantage such as light intensity is adjustable, luminous intensity distribution is flexible, design freedom is big.In addition, White LED does not contain the pollutants such as lead glass of mercury and the use of socket metal part.The light energy use efficiency of white solid state LED is up to 70%～80%, and reach more than 100,000 hours reliable useful life, is 100-300 times of common filament bulb, and respective battery is prolonged more than 10 times useful life.
Summary of the invention
The utility model aims to provide that a kind of volume is little, light weight, thin thickness, the big drive unit that is used for the supercharging of superhigh brightness LED direct current of luminous intensity of LED output.
The utility model is provided with housing, switch, power supply, series resistance, switch series is connected in the power path, transformer is provided with primary coil (or claiming primary coils) and at least 1 group secondary coil, also is provided with quantity triode, rectifier diode, storage capacitor and the Zener diode group identical with transformer secondary output coil groups number; One end of transformer and a termination power of secondary coil, another termination series resistance of primary coil, another termination transistor base of series resistance, another termination transistor collector of secondary coil, rectifier diode connects transistor collector and storage capacitor respectively, another termination transistor emitter and power supply of storage capacitor, storage capacitor and external light-emitting diode in parallel with Zener diode.
Said light-emitting diode is high brightness LED or superhigh brightness LED.
Said housing can be selected information indicator light (vehicles signal lamp for example for use, indicator, taillight, stop lamp, traffic lights, warning lamp, identification light etc.), big screen display screen (replaces conventional lightbank, neon light, magnetic turnover panel etc.), liquid crystal LED shows back illumination plate (automobile for example, the soniscope dash board, the mobile phone backlight, electronic watch, backlight such as electronic calculator) and solid-state illumination lamp (flashlight for example, decorative lamp, Christmas lamp, the illuminating lamp in night scene Engineering Lamp and various places etc.) etc.
Light-emitting diode (LED) is a kind ofly electric current forward to be led to the p-n junction place and luminous semiconductor solid-state device adopts double-heterostructure and quantum well structures usually.Before extraneous driving voltage did not reach the required minimum voltage of activation LED, the great electric current that don't work also was to allow its conducting luminous.The general work voltage of ultra-high brightness LED (as white light, blue light, green glow and purple light etc.) is 3.3～4.3V, and (as ruddiness, orange light and the amber light etc.) that have then can be operated in the voltage range of hanging down a bit, as 2.3～3.5V.But generally, only utilizing a simple joint 1.5V dry cell is impossible drive ultra-high brightness LED.If with simple two joint 1.5V dry cells, promptly allow to driving work, luminous intensity is also desirable not to the utmost usually.If adopt three joints or above 1.5V or the more high-tension battery of three joints to remove to drive ultra-high brightness LED, its range of application will be subjected to more restriction.Therefore, can low-voltage led drive circuit that reasonable in design be to guarantee that ultra-high brightness LED (mainly being White LED) effectively provides a key of best intensity of illumination.
The white ultra-high brightness LED has very precipitous voltage-current curve characteristic, this means that small change in voltage will cause its bigger electric current to change.Obtain stable and bright light output effect, the input power of LED driver circuit is answered optimized choice.Up to now, there are four kinds of basic skills can drive white ultra-high brightness LED, i.e. deficit power, series resistor, constant voltage and constant current control.Wherein the simplest method is to drive it with the voltage that suitably is lower than the White LED rated voltage, and it is operated under the rated current, and its inherent power loss is almost nil, but because of can not the driven at full load White LED, luminous intensity be generally lower.Adopt the compact LED flashlight of two joint alkaline batteries (No. 5 or No. 7) at present on the market, most of this method of using.Prevailing driving method is in the voltage allowed band, the resistance of the suitable resistance of connecting with White LED.The voltage drop that resistance causes can be played metering function.Resistance can be external, also can utilize the internal resistance of supplying cell itself to realize.Adopt the LED flashlight of three joint alkaline batteries (No. 5 or No. 7) also often to adopt this method on the market.Its major defect is nearly to have that 15%～25% electric energy can be slatterned by resistance.The third driving method is that constant current drives, and its design is more complicated, and cost is also higher, generally needs application integrated circuit and a large amount of auxiliary element, for low-cost, dynamical LED photophore, can be described as a big threshold.The practical and effective driving method is constant voltage control more.Utilize hyundai electronics element and rational line design, requirement, especially low-voltage such as that this drive circuit generally can the realization type is little, amount is light, inexpensive, reliable and efficient are not enough to directly drive White LED and need under the situation of pressurized treatment.This kind method requires input voltage to mate with White LED is strict, in order to avoid it is burnt out.
In sum, show that the utility model provides a kind of volume little for the ultra-high brightness LED of modern development, light weight, thin thickness, the big direct current supercharging drive unit of luminous intensity of LED output, need not to adopt the integrated circuit of cost costliness, only utilize common components and parts, reach the purpose of this utility model by optimized Structure Design, it can be widely used in information indicator light (vehicles signal lamp for example, indicator, taillight, stop lamp, traffic lights, warning lamp, identification light etc.), big screen display screen (replaces conventional lightbank, neon light, magnetic turnover panel etc.), liquid crystal LED shows back illumination plate (automobile for example, the soniscope dash board, the mobile phone backlight, electronic watch, backlight such as electronic calculator) and solid-state illumination lamp (flashlight for example, decorative lamp, Christmas lamp, the illuminating lamp in night scene Engineering Lamp and various places etc.) etc.
Description of drawings
Fig. 1 is the theory of constitution figure of monocell list ultra-high brightness LED supercharging drive circuit.
Fig. 2 is the theory of constitution figure of monocell three ultra-high brightness LED supercharging drive circuits.
Fig. 3 is the surface encapsulation element wiring board detail of design of all upright elements that loose of Fig. 2 circuit.
Fig. 4 is the battery input voltage vin (V) of Fig. 1 circuit and flow through high-brightness LED (white light emitting diode, whiteLED) graph of relation of positive drive voltage Vf (V).
Fig. 5 is the battery input voltage vin (V) of Fig. 1 circuit and the graph of relation of the electric current I f (mA) of the high-brightness LED of flowing through.
Fig. 6 is the structural representation of the pocket long-acting flashlight of monocell list ultra-high brightness LED.
Fig. 7 is the structural representation of the cylindrical pocket long-acting flashlight of monocell list ultra-high brightness LED.
Fig. 8 is the structural representation of the pocket long-acting flashlight of monocell three ultra-high brightness LEDs.
Fig. 9 is the structural representation of the difunctional detect counterfeit money machine-flashlight of monocell ultra-high brightness LED.
Figure 10 is the two selected on-off circuit theory of constitution figure of the difunctional detect counterfeit money machine-flashlight of monocell ultra-high brightness LED.
Figure 11 is a solar energy ultra-high brightness LED Table lamp structure schematic diagram.
Figure 12 is that solar energy ultra-high brightness LED desk lamp circuit is formed schematic diagram.
Figure 13 is a solar energy ultra-high brightness LED garden lamp structural representation.
Figure 14 is a dry cell ultra-high brightness LED decorative lamp structural representation.
Embodiment
The basic principle of monocell ultra-high brightness LED drive circuit as shown in Figure 1.Mainly by transformer T, series resistance R, triode Q, rectifier diode D, storage capacitor C, Zener diode D
0, ultra-high brightness LED D
1Compositions such as (white or other colors), K switch and battery supply.(0.55～1.5VDC) the flow through primary coils of transformer T, base stage and the R of triode Q makes the Q forward conduction to electric current from power supply.Simultaneously, the reverse induction circuit of T secondary coil is offset the drive current of the Q base stage of flowing through at the appropriate time, and Q is ended.When Q ends, produce a forward voltage pulse at collector electrode.Because T time level is connected with power supply, will be in the total voltage of Q collector electrode above power supply, this voltage finally makes D after D rectification and C smoothing processing
1Voltage obtain supercharging.Voltage after this supercharging surpasses D
1Rated voltage (as 3.3～4.3V) time, just light D
1, and be maintained to till T the thorough discharge of level.Then, power supply begins again to provide electric current to T main, R and Q base stage, and conducting Q drives D then again
1The vibration that constantly circulates of this process is enough big (as 20KHz～300KHz), just conducting D periodically when cycle of oscillation
1, give a kind of sensation of lighting continuously.
Below provide the selection principle of each components and parts among Fig. 1,2.
If Q base stage-emitter parasitic capacitance is several+picofarad (PF), the inductance value of T primary coils is several+microhenry (μ H), and according to simple formula f=1/ (2 π √ LC), the frequency of oscillation f of this supercharging circuit can roughly be estimated as hundreds of KHz (KHz).
The luminous efficiency of White LED changes along with the variation that applies power.If as driving starting point (100%), increase power and promptly can lower efficiency with comparatively general 20mA; Promptly increase luminous efficiency (but having reduced luminous intensity) and reduce power.High input power extreme down, if increase by 7.5 times of power, can only corresponding increase by 3 times luminous output, and luminous efficiency is successively decreased gradually simultaneously.At low input power extremely down, reach 80% if reduce power, still can export 30% luminous, and luminous efficiency is risen progressively gradually simultaneously.Therefore, obtain bigger luminous intensity, its basic principle is added more White LED exactly, rather than increases the input power of each LED simply.
According to the circulation oscillation principle of transformer T primary and secondary level and three formation of Q, T by single main-single level, is developed into the level of single main-repeatedly pattern, just can realize easily that LED multi-path exports, to promote overall luminous intensity.As shown in Figure 2, monocell can effectively drive three paths of independent LED boost-up circuit, shared transformer T main of all parallel LED boost-up circuits and series resistance R, the base stage of each triode Q connects altogether, its vibration is controlled separately by T level of transformer separately, and the electric current of Q is unlikely too fast saturated thereby assurance is flowed through.Utilize this parallel connection way of output, whole LED intensity of illumination is compared with single led circuit and can be improved 3 times nearly.It should be noted that if only also can realize as shown in Figure 2 three paths of LEDs output with a triode, but this moment because single triode electric current ability to bear may overload, its final light intensity output can't reach the best.
Maximum current one number of turn value before the size of transformer T, magnetic permeability and saturation characteristic will determine T to reach capacity.If T is saturated before the minimum conducting electric current of Q base stage, at this moment T ends Q with regard to a similar pure resistance at once, cannot realize the circulation vibration, does not also just reach the purpose of supercharging.The size of T coil and the resistance of R determined the to flow through conducting electric current of Q.R can adjust and finally flow to D
1Drive current, reduce R and can increase D
1Electric current, till Q is saturated.The primary and secondary level inductance value of T had both determined the Q collector current to offset base current and by the required time of Q, had controlled the D that flows through again when Q closes
1Size of current and duration.For ease of realizing flowing through D
1Enough big drive current, thus enough illumination brightness guaranteed, and Q is preferably the NPN type switch triode with higher collector current limit value.For improving D to greatest extent
1The magnitude of voltage at two ends, D should be the less Schottky diode of forward voltage drop.C should be the electrolytic aluminium capacitor or the tantalum capacitor of polarity, and its appearance value can be according to discharging and recharging time-optimized selection.D
0Can limit D
1The voltage at two ends is unlikely above its withstand voltage its maximum voltage and reaches protective effect.
For the volume that makes supercharging drive circuit of the present utility model do forr a short time, thinner, lighter, all upright elements that loose all can be substituted by surface encapsulation element (SMD).If adopt the design of printed on both sides wiring board, its size dimension can be suitable with the size of transformer.The wiring board design full pattern of the three paths of LEDs output that provides as Fig. 3, the about 22mm of its diameter.
The relation of typical battery input voltage vin of the utility model monocell LED supercharging drive circuit and high-brightness LED positive drive voltage Vf as shown in Figure 4.
Cell voltage is in 0.55～1.5V scope, and the voltage Vf after the supercharging of ultra-high brightness LED two ends can maintain 3.3～3.7V, and it is luminous to guarantee that ultra-high brightness LED continues conducting.The light intensity of ultra-high brightness LED is behind its forward conduction, and mainly the electric current I f by the LED that flows through is determined.Relation curve between battery input voltage vin corresponding with Fig. 4 and the electric current I f of the LED that flows through is shown in Fig. 5.Learnt that by Fig. 5 electric current I f is along with the increase of cell voltage Vin is risen in 5～47mA scope gradually, its average current is 26mA nearly, is higher than the rated current 20mA of general ultra-high brightness LED.Therefore the intensity of illumination performance of ultra-high brightness LED output is good.
Below provide the example that some use superhigh brightness LED supercharging drive unit.
In view of ultra-high brightness LED (especially based on white light) constantly enlarges in real-life application, (indicate from the information indicator light such as vehicle signal, indicator, taillight, stop lamp, traffic lights, warning lamp, identification light etc.), big screen display screen (replaces conventional lightbank, neon light, magnetic turnover panel etc.), liquid crystal LCD shows that back illumination is (as automobile, the soniscope dash board, the mobile phone backlight, electronic watch, electronic calculator backlight etc.) and solid-state illumination (as flashlight, Christmas lamp, decorative lamp, the night scene Engineering Lamp, steamer, aircraft, the interior light of automobile, indoor, the mine, diving, speedily carry out rescue work, military illuminating lamp etc.), emerge in an endless stream, too numerous to mention.If, just can provide some functions efficient and with low cost again solution to the flexible Application in addition of the LED supercharging drive circuit in the utility model.Simultaneously white ultra-high brightness LED is replaced with other super brightness color LEDs or great power LED (ethereal blue, green, purple, amber, pink etc.), can be realized the masstone illumination.
1) the long-acting pocket torch of monocell list ultra-high brightness LED (referring to Fig. 6,7)
Be designed to a quasi-cylindrical structure, form by shell expansion top 1, outer casing underpart 2, printed substrate 3, White LED 4 (being generally the 5mm round tube), reflector 5, directional light camera lens 6, rotary switch 7, battery 8 and stay cord hole 9.Monocell list White LED supercharging drive circuit is housed on the wiring board, and the interface of White LED, battery and switch is provided.Flashlight length and diameter are mainly by battery size and the decision of camera lens size.Battery can be used once or secondary cell, comprises 1.5V left and right sides button type, No. 5 (AA), No. 7 (AAA), No. 2 (C) and No. 1 (D) battery etc., but is advisable with No. 5 batteries.Flashlight shell can be made with plastics, aluminium alloy or other metal materials, and its configuration design can variation.The difference of Fig. 7 and Fig. 6 is that shell is pure cylinder design.If with No. 5 alkaline batteries of a joint is example, effectively the continuous illumination time can reach more than 20 hours.
2) the pocket long-acting flashlights of the many high-brightness LEDs of monocell (referring to Fig. 8)
If adopt many ultra-high brightness LEDs of monocell supercharging drive circuit, just can realize many LED of monocell flashlight, its outward appearance is consistent with Fig. 7 basically, and just camera lens, reflector and wiring board part adjust slightly, so that the point-source of light that radiates from 3 White LEDs can be assembled a sub collimated light beam.
3) the difunctional detect counterfeit money machine-flashlight of monocell ultra-high brightness LED (referring to Fig. 9,10)
At home and abroad on the market, flashlight is generally only used as portable lighting at present.Owing to the driven characteristic of the ultraviolet LED (UV LED) that possesses cash examining function (as RMB, Hongkong dollar or other foreign currencies etc.) is similar to White LED, therefore only need the arrangement position of LED on the supercharging drive circuit adjusted slightly, change single rotary switch into two selection rotary switches, promptly can be made into the difunctional detect counterfeit money machine-flashlight of monocell.Purple LED is selected the 3mm circle for use, is horizontally placed between reflector and the wiring board, and a transparent plastic window is stayed in its anterior side, so that outside printing opacity.Purple LED also can parallelly with white light LEDs be placed forward.The electric principle of the two selection rotary switch K of similar single-pole double throw as shown in figure 10.D1 is a white light LEDs among the figure, and D2 is a purple LED, omits the Zener diode that voltage stabilizing is used.Other components and parts mark and Fig. 1,2 is identical.
4) solar energy ultra-high brightness LED desk lamp (referring to Figure 11,12)
(concerning general 5mm round tube, only consume 70～200mw), therefore can organically combine, because white ultra-high brightness LED driving power is very little so that enough luminosity and long light application time to be provided with renewable energy resources solar-energy photo-voltaic cell.Solar-energy photo-voltaic cell (monocrystalline or polycrystalline) is positioned over Desk lamp feet, does the surface with the PC plastics, is beneficial to sunray and effectively penetrates.Also solar cell can be made a module, it is installed on outside window, on roof or the balcony, allow outdoor light direct irradiation get light with pair of lead wires.Solar-energy photo-voltaic cell is directly given 1.5V battery or the long-time charging of a plurality of secondary cells (NI-G, ni-mh, lithium battery etc.) in parallel by a rectifier diode.
In Figure 12, adopt 4 solar-energy photo-voltaic cell SP that voltage greater than 1.5V is provided under the general illumination, 2 joint secondary cell V parallel connections are to guarantee the study lighting hours in 2-3 evening at least.Other marks and Fig. 1,2 is identical.
5) solar energy ultra-high brightness LED garden lamp (referring to Figure 13)
The combination of the long-life white light of low energy consumption or color LED and solar energy can be the product that night scene engineering construction (as flooring lamp, garden lamp, sign Landscape Lamp etc.) provides high performance-price ratio.Figure 13 is an appearance design that utilizes the solar energy ultra-high brightness LED garden lamp that the supercharging drive circuit in the utility model makes.Adopt tower structure, solar cell is positioned over the garden lamp top, is covered with transparent PC plastic layer on it.Whole garden lamp can design encapsulation, the all-weather use type helped.Super brightness white or other colors LED (1 or many) are settled in the garden lamp middle part, and the light lateral radiation that LED is launched comes out.The switch of circuit makes light-operated switch into, realizes turning on light automatically evening, and turn off the light daytime automatically.
6) the romantic decorative lamp (referring to Figure 14) of dry cell ultra-high brightness LED
In Figure 14, one or more super brightness whites or color LED are placed on the middle part of romantic decorative lamp, upwards radiation.Under the LED and the lamp inside top is furnished with the reflector of 2 particular design, the light that LED is emitted be transformed into can to around the planar light of transverse scattering.LED supercharging circuit places the LED downside, directly links to each other with battery.Switch can adopt the rotary of simple operations, push type or alternate manner.Dry cell can adopt 1 No. 1 high-capacity battery of joint or a few joint parallel connections No. 5 or No. 7 once or secondary cell, so that the illumination of ultra-long time to be provided.If calculate by 1 ultra-high brightness LED, No. 1 battery of 1 joint, its continuous effective luminous lighting time can reach about 300 hours, was equivalent to the life cycle (by on average using every day 1-2 hour) of half a year.The romantic alternative traditional candle light of decorative lamp of this LED or other low-light light fixtures, utilize brilliance such as its white that emits, green, blueness, purple or pink, see through vaporific of the bright or frosted of full impregnated that PC or acryl plastics make, use for occasions such as bedroom, coffee shop, bar, hotels.
Claims (6)
1, superhigh brightness LED supercharging drive unit, it is characterized in that being provided with housing, switch, power supply, series resistance, switch series is connected in the power path, transformer is provided with primary coil and at least 1 group secondary coil, also is provided with quantity triode, rectifier diode, storage capacitor and the Zener diode group identical with transformer secondary output coil groups number; One end of transformer and a termination power of secondary coil, another termination series resistance of primary coil, another termination transistor base of series resistance, another termination transistor collector of secondary coil, rectifier diode connects transistor collector and storage capacitor respectively, another termination transistor emitter and power supply of storage capacitor, storage capacitor and external light-emitting diode in parallel with Zener diode.
2, superhigh brightness LED supercharging drive unit as claimed in claim 1 is characterized in that said housing selects the information indicator light for use, big screen display screen, and liquid crystal LED shows back illumination plate or solid-state illumination lamp.
3, superhigh brightness LED supercharging drive unit as claimed in claim 2 is characterized in that said information indicator light is vehicles signal lamp, indicator, taillight, stop lamp, traffic lights, warning lamp or identification light.
4, superhigh brightness LED supercharging drive unit as claimed in claim 2 is characterized in that said big screen display screen is a conventional lightbank, neon light or magnetic turnover panel.
5, superhigh brightness LED supercharging drive unit as claimed in claim 2 is characterized in that said liquid crystal LED shows that the back illumination plate is an automobile, soniscope dash board, mobile phone backlight, electronic watch or electronic calculator backlight.
6, superhigh brightness LED supercharging drive unit as claimed in claim 2 is characterized in that said solid-state illumination lamp is a flashlight, decorative lamp, Christmas lamp or night scene Engineering Lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200420073928.4U CN2739914Y (en) | 2004-06-25 | 2004-06-25 | Superhigh brightness LED booster driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200420073928.4U CN2739914Y (en) | 2004-06-25 | 2004-06-25 | Superhigh brightness LED booster driving device |
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| Publication Number | Publication Date |
|---|---|
| CN2739914Y true CN2739914Y (en) | 2005-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200420073928.4U Expired - Fee Related CN2739914Y (en) | 2004-06-25 | 2004-06-25 | Superhigh brightness LED booster driving device |
Country Status (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102186280A (en) * | 2011-03-17 | 2011-09-14 | 江苏普明商贸有限公司 | Current backflow type storage and power saving device |
| CN102685967A (en) * | 2011-03-11 | 2012-09-19 | 亿广科技(上海)有限公司 | Light-emitting diode (LED) driving circuit |
| CN103402293A (en) * | 2013-08-19 | 2013-11-20 | 黄月华 | High brightness LED flashlight adopting single battery |
-
2004
- 2004-06-25 CN CN200420073928.4U patent/CN2739914Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102685967A (en) * | 2011-03-11 | 2012-09-19 | 亿广科技(上海)有限公司 | Light-emitting diode (LED) driving circuit |
| CN102186280A (en) * | 2011-03-17 | 2011-09-14 | 江苏普明商贸有限公司 | Current backflow type storage and power saving device |
| CN103402293A (en) * | 2013-08-19 | 2013-11-20 | 黄月华 | High brightness LED flashlight adopting single battery |
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Owner name: XIAMEN AIDI SCIENCE AND TECHNOLOGY LTD. Free format text: FORMER OWNER: WANG YAJUN Effective date: 20060630 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20060630 Address after: 361009. Albert building, N401 overseas student Pioneer Park, Fujian, Xiamen Patentee after: Xiamen love Technology Co., Ltd. Address before: 361004 9F-D room, golden egret garden, No. 501, Bailu Road, Fujian, Xiamen Patentee before: Wang Yajun |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |