CN108471654A - A kind of anti-glimmer non-isolation type driving LED ceiling lamp tool - Google Patents
A kind of anti-glimmer non-isolation type driving LED ceiling lamp tool Download PDFInfo
- Publication number
- CN108471654A CN108471654A CN201810416062.9A CN201810416062A CN108471654A CN 108471654 A CN108471654 A CN 108471654A CN 201810416062 A CN201810416062 A CN 201810416062A CN 108471654 A CN108471654 A CN 108471654A
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- China
- Prior art keywords
- isolation type
- glimmer
- led
- capacitance
- ceiling lamp
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- Pending
Links
- 238000002955 isolation Methods 0.000 title claims abstract description 24
- 230000005611 electricity Effects 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005457 optimization Methods 0.000 abstract description 2
- 239000011324 bead Substances 0.000 description 17
- 241001465382 Physalis alkekengi Species 0.000 description 13
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 239000000758 substrate Substances 0.000 description 6
- 238000004146 energy storage Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000009514 concussion Effects 0.000 description 4
- 238000005868 electrolysis reaction Methods 0.000 description 4
- 239000011889 copper foil Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 206010014405 Electrocution Diseases 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a kind of anti-glimmer non-isolation type driving LED ceiling lamp tools, including LED lamp and non-isolation type LED drivings, it is characterised in that：The non-isolation type LED drivings include rectification circuit, filter circuit, constant-current control circuit, the finishing circuit is bridge rectifier, the bridge rectifier prime is connected with one foot of capacitance, another foot ground connection of capacitance, the non-isolation type LED drivings are integrated with power supply wiring connector and ground connection connection joint, the capacity earth foot is connected by way of electrical connection with LED lamp outer shell, also it is connected simultaneously with the ground connection connecting terminal, circuit structure is simple, cheap reliable, good by the ingenious optimization of earthing mode, anti-glimmer effect.
Description
Technical field
The invention belongs to non-isolated LED drive circuit technical fields, concretely relate to a kind of anti-glimmer non-isolation type
Drive LED ceiling lamp tool.
Background technology
In recent years, LED lamp obtains the favor of consumer, especially LED ceiling due to its power saving and brightness height etc.
Lamp is neatly conveniently comprehensively promoted due to it.
Due to some, the needs of our house decoration electrician level differences and special occasions, many families or its
His the switch zero curve firewire in place is reversed, and switch controls zero curve, causes lamps and lanterns to charge always, and cause non-isolated LED lamp
(including energy-saving lamp) has glimmer or phenomenon of coruscating when switch is turned off.This leads to Railway Project, one be due to
Lamps and lanterns charge throughout the year, its service life is caused to greatly shorten, and replace frequent, expend financial resources and manpower, one be due to noctilucence,
The quality of human sleeping slept under this lamp declines, unhealthful.Existing solution is or zero firewire connects pair or replaces
Isolation drive.But isolation drive efficiency is generally lower than non-isolated, and volume is big, and price is high, is not appropriate for built-in type lamps and lanterns
Design requirement, and also only improve glimmer and cannot solve the problems, such as glimmer.
Invention content
The object of the present invention is to provide a kind of anti-glimmer non-isolation type driving LED ceiling lamp tools, are intended to solve non-isolated
The problem for causing lamp bead micro after zero firewire of LED ceiling lamp is reversed.
In order to solve the above technical problems, the object of the present invention is achieved like this：
A kind of anti-glimmer non-isolation type driving LED ceiling lamp tool, including LED lamp and non-isolation type LED drivings, feature
It is：The non-isolation type LED drivings include rectification circuit, filter circuit, constant-current control circuit, and the finishing circuit is bridge-type
Rectification, the bridge rectifier prime are connected with one foot of capacitance, another foot ground connection of capacitance, the non-isolation type LED drivings collection
At have power supply wiring connector and ground connection connection joint, the capacity earth foot by way of electrical connection with LED lamp outer shell phase
Connection, while being also connected with the ground connection connecting terminal.
Preferred embodiment on the basis of said program and as said program：The capacitance is nanofarad range or pico farad grade electricity
Hold.
Preferred embodiment on the basis of said program and as said program：The capacitance selects ceramic disc capacitor.
Preferred embodiment on the basis of said program and as said program：The capacitance value is 2200pf.
Preferred embodiment on the basis of said program and as said program：The capacitance passes through conducting wire and LED shells
Connection, conducting wire are electrically connected with connecting terminal with LED cage connections end.
The present invention is prominent and beneficial compared with prior art to be had the technical effect that：Than Traditional solutions, there is the following
Advantage：
First cheap and simple is reliable, only just solves and must could be solved with isolated power supply with a capacitance and a ground connection
Scheme, technically it is simple and practicable.
Second by the ingenious optimization of earthing mode, and can be more simpler than traditional scheme be grounded and solves fire
Lamp bead glimmer caused by line zero curve is reversed.
Third effect is good, and traditional scheme isolated power supply still will produce electric discharge on energy-storage travelling wave tube, only because isolation
The presence of transformer causes amplitude to become smaller.And the present invention fundamentally solves the string between energy storage inductor and energy storage electrolysis
Join resonance, that puts things right once and for all before bridge solves the problems, such as electric discharge.
Description of the drawings
Fig. 1 is the first existing non-isolated driving principle figure；
Fig. 2 is second of existing non-isolated driving principle figure；
Fig. 3 is the third existing non-isolated driving principle figure；
Fig. 4 is that lamp bead is micro far from analysis schematic diagram；
Fig. 5 is circuit diagram of the present invention.
Specific implementation mode
To keep the purpose, technical scheme and advantage of the application clearer, below in conjunction with the attached drawing in embodiment, to reality
The technical solution applied in example is clearly and completely described；
The micro main cause of lamp bead：
1, the characteristics of non-isolated lamps and lanterns driving
Currently on the market the non-isolated driving of different lamps be all BUCK circuits several mutation.It is given below several
A typical case uses circuit, refers to Fig. 1-3, they, all there are one common trait, are exactly that LED lamp bead suspends, be not directly connected bridge-type
Ground after rectification, is floating ground, and when work, they have voltage difference ground between, and (exchange 220 × 1.414- of input lamp beads are electric
The voltage difference of pressure >=200V or more) (lamp bead string and voltage difference, different), here it is the bases for leading to lamps and lanterns glimmer.
2, according to the classification of national standard GB7000.1-2002 and IEC60598-1: 2003 newest standards
A kind of lamps and lanterns i.e. I class lamps and lanterns, are defined as follows：
The electrocution-proof protection of lamps and lanterns does not only rely on basic insulation, but also includes additional safety measure, i.e., easily touching
Conductive component be connected on the protective grounding conductor in fixed circuit, make accessible conductive component just in case basic insulation lose
It will not be charged when effect, that is to say, that lamps and lanterns must safety ground；
3, the technical reason of LED lamp bead glimmer
Since Live line Zero line is reversed, driving is caused to output and input the AC voltage difference to greatly there is 220V always, only
Because not being formed into a loop, driving does not work.But the filtering electrolysis that bridge rectifier is followed by, come in alternating voltage 50HZ
During recharging electric discharge, certain impulse electricity ripple current F is produced, by having flowed to driving rear end such as the approach of figure below
On energy storage inductor, in being electrolysed the charge and discharge process with inductance, LC high frequency oscillations are generated, concussion frequency is
The frequency of this concussion is related with inductance and capacitance and the concussion power frequency being superimposed upon in this decorum, generally
This concussion frequency of the non-isolated drivings of LED is very high, is a high frequency oscillation.
The LED lamp bead of lamps and lanterns is attached on aluminum substrate (as scheme), there is the PP of insulation between the copper foil that aluminum substrate and lamp bead are pasted
Cloth and heat-conducting glue isolation, one capacitance of self-assembling formation, capacity is directly proportional to the area of aluminium base plate suqare and copper foil, and aluminum substrate is got over
Greatly, cover that copper is bigger, and capacity is bigger.General tens PF of its capacity to several NF.And aluminum substrate is fixed on metal by metal screws
On chassis, it is equivalent to this PF grades capacitance one end in this way and is connect with lamp bead, one end is connect with chassis.
By preceding described, the necessary chassis earth of a kind of lamps and lanterns, this capacitance is also just with being greatly connected in this way.Held according to capacitance
Anti- formula Xc=1/ (2 π fC), wherein Xc are capacitive reactance, and unit is ohm, and f is the frequency for the electric current for being added in capacitance both ends, and C is this
The capacity of a capacitance.The f frequencies of high-frequency signal are higher, and the capacity C of capacitance is bigger, then impedance Xc is smaller, that is to say, that electric current
It is easier to pass through.And the high-frequency signal of hundreds of K is equivalent to short circuit for PF grades of capacitances, such high-frequency signal can be unimpeded
Aluminum substrate is flowed to from LED lamp bead pin.In this way when switch cutoff, since Live line Zero line is reversed, lamps and lanterns have electricity and connect
Ground, the high frequency voltage on copper foil in lamp bead discharge into ground by this capacitance, and forming circuit causes LED lamp bead to work always
And shine, form glimmer.
The reason of forming glimmer has been found, and is to be charged always in lamps and lanterns and the electricity due to alternating voltage after bridge rectifier
Caused by charge and discharge form LC series resonances formation high frequency voltage with inductance in solution, we solve the mode of seeking.As long as removing this
A high frequency electrical signal can solve LED lamp bead glimmer.
We add the capacitance of nanofarad (nF) grade before bridge rectifier, and are connected with ground connection, the production in this way in electrolysis
The 50HZ low frequency charging voltage F of raw high frequency electrical signal are put on ground connection in advance by the capacitance of this low capacity, thus will not
This voltage is set to be added to formation LC series resonances on rear class energy storage inductor.Its formula is Xc=1/ (2 π fC), and wherein C is smaller, right
Low frequency model F's filters out that performance is better, the ceramic disc capacitor of our actual selection 2200pF, to the alternating voltage of 50HZ in electrolysis
The ripple voltage of generation to filter out performance best.Thus eliminating the need generate capacitance of the high-frequency signal by aluminum substrate self-assembling formation
The reason of discharging and leading to LED lamp bead glimmer.
Before our bridges plus capacitance be directly connected to ground connection, one terminal be used in combination with connecting, the ground connection of such client and I
Solution the ingenious merging of ground connection, realize a ground connection it is public, simple and clear solves the problems, such as lamp bead glimmer and ground connection
Problem.
Above-described embodiment is only presently preferred embodiments of the present invention, is not limited the scope of the invention according to this, therefore：It is all according to
The equivalence changes that structure, shape, the principle of the present invention is done, should all be covered by within protection scope of the present invention.
Claims (5)
1. a kind of anti-glimmer non-isolation type driving LED ceiling lamp tool, including LED lamp and non-isolation type LED drivings, feature exist
In：The non-isolation type LED drivings include rectification circuit, filter circuit, constant-current control circuit, and the finishing circuit is that bridge-type is whole
Stream, the bridge rectifier prime are connected with one foot of capacitance, another foot ground connection of capacitance, and the non-isolation type LED drivings integrate
There are power supply wiring connector and ground connection connection joint, the capacity earth foot to be connected with LED lamp outer shell by way of electrical connection
It is logical, while being also connected with the ground connection connecting terminal.
2. a kind of anti-glimmer non-isolation type driving LED ceiling lamp tool according to claim 1, it is characterised in that：The electricity
Hold is nanofarad range or pico farad grade capacitance.
3. a kind of anti-glimmer non-isolation type driving LED ceiling lamp tool according to claim 1, it is characterised in that：The electricity
Hold and selects ceramic disc capacitor.
4. a kind of anti-glimmer non-isolation type driving LED ceiling lamp tool according to claim 1, it is characterised in that：The electricity
Appearance capacitance is 2200pf.
5. a kind of anti-glimmer non-isolation type driving LED ceiling lamp tool according to claim 1, it is characterised in that：The electricity
Appearance is connected to by conducting wire with LED shells, and conducting wire is electrically connected with connecting terminal with LED cage connections end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810416062.9A CN108471654A (en) | 2018-05-03 | 2018-05-03 | A kind of anti-glimmer non-isolation type driving LED ceiling lamp tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810416062.9A CN108471654A (en) | 2018-05-03 | 2018-05-03 | A kind of anti-glimmer non-isolation type driving LED ceiling lamp tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108471654A true CN108471654A (en) | 2018-08-31 |
Family
ID=63260909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810416062.9A Pending CN108471654A (en) | 2018-05-03 | 2018-05-03 | A kind of anti-glimmer non-isolation type driving LED ceiling lamp tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108471654A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110831286A (en) * | 2019-12-10 | 2020-02-21 | 厦门阳光恩耐照明有限公司 | Circuit and method for removing slight brightness of LED lamp and LED lamp |
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| CN201601859U (en) * | 2009-12-17 | 2010-10-06 | 成都瑞芯电子有限公司 | Non-isolated LED driving circuit |
| CN204350378U (en) * | 2014-12-30 | 2015-05-20 | 广州众恒光电科技有限公司 | A kind of LED of energy extinguish fast |
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| CN105960068A (en) * | 2016-07-08 | 2016-09-21 | 上海灿瑞科技股份有限公司 | Circuit for preventing power back flash of LED lamp |
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| CN206181448U (en) * | 2016-11-09 | 2017-05-17 | 中山市新邦照明电器有限公司 | Lamp pearl shunt capacitance mode light source plate |
| CN206865791U (en) * | 2017-06-21 | 2018-01-09 | 深圳市双向诚科技有限公司 | A kind of New LED driver |
| CN208210379U (en) * | 2018-05-03 | 2018-12-07 | 海宁福得电器有限公司 | A kind of anti-glimmer non-isolation type driving LED ceiling lamp tool |
-
2018
- 2018-05-03 CN CN201810416062.9A patent/CN108471654A/en active Pending
Patent Citations (11)
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| CN101009425A (en) * | 2006-12-28 | 2007-08-01 | 人民电器集团有限公司 | Over current protection system of the breaker and its operating method |
| CN101674004A (en) * | 2009-10-01 | 2010-03-17 | 英飞特电子（杭州）有限公司 | Circuit for improving light-load power factor of power supply |
| CN201601859U (en) * | 2009-12-17 | 2010-10-06 | 成都瑞芯电子有限公司 | Non-isolated LED driving circuit |
| CN105144843A (en) * | 2013-05-02 | 2015-12-09 | 赤多尼科两合股份有限公司 | Operating device for luminous elements |
| CN204350378U (en) * | 2014-12-30 | 2015-05-20 | 广州众恒光电科技有限公司 | A kind of LED of energy extinguish fast |
| CN205622942U (en) * | 2016-05-13 | 2016-10-05 | 上海雷鸥电气有限公司 | Built -inly prevent stroboscopic LED lamp |
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| CN106231741A (en) * | 2016-10-13 | 2016-12-14 | 伊戈尔电气股份有限公司 | The anti-dim light circuit of the LED light source that a kind of linear constant current drives |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110831286A (en) * | 2019-12-10 | 2020-02-21 | 厦门阳光恩耐照明有限公司 | Circuit and method for removing slight brightness of LED lamp and LED lamp |
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