CN104853473A - LED fluorescent lamp circuit employing fluorescent lamp electronic ballast for driving and LED fluorescent lamp - Google Patents
LED fluorescent lamp circuit employing fluorescent lamp electronic ballast for driving and LED fluorescent lamp Download PDFInfo
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- CN104853473A CN104853473A CN201410802584.4A CN201410802584A CN104853473A CN 104853473 A CN104853473 A CN 104853473A CN 201410802584 A CN201410802584 A CN 201410802584A CN 104853473 A CN104853473 A CN 104853473A
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Abstract
The invention discloses an LED fluorescent lamp circuit employing fluorescent lamp electronic ballast for driving and an LED fluorescent lamp. The LED fluorescent lamp circuit includes a rectifier bridge and an LED bead unit. One AC voltage input terminal of the rectifier bridge is connected with one group of high frequency AC output terminals of the fluorescent lamp electronic ballast. The other AC voltage input terminal of the rectifier bridge is connected with the other group of high frequency AC output terminals of the fluorescent lamp electronic ballast. According to the invention, the fluorescent lamp electronic ballast can be used for direct driving and no special LED power driver is needed. The application range of the LED fluorescent lamp is enlarged and the use cost is reduced. Besides, the LED fluorescent lamp circuit and the LED fluorescent lamp has characteristics of low energy consumption, good energy saving effect, long service lifetime, easy promotion and the like.
Description
Technical field
The present invention relates to a kind of by the LED daylight lamp circuit of electronic ballast for fluoresent lamp Direct driver work and the LED daylight lamp based on this LED daylight lamp circuit realiration, belong to LED daylight lamp field.
Background technology
As everyone knows, LED daylight lamp has the plurality of advantages such as luminous efficiency is high, energy consumption is low, the life-span is long because of it, is applied to various occasion more and more widely.The experiment proved that, compared with traditional fluorescent lamp, when brightness is identical, the fractional energy savings of LED daylight lamp can reach more than 50%, and useful life is the several times of fluorescent lamp.
At present in order to make LED daylight lamp normally use, need for the special LED power driver of its outfit, so that civil power (alternating current) is transformed into direct current, and carry out rectification, constant current, meet the unilateal conduction characteristic of the LED light-emitting diode forming LED daylight lamp.But the cost of LED power driver is higher, this is 2 ~ 3 times of fluorescent lamp use cost with regard to making the use cost of LED daylight lamp, and thus, the marketing of LED daylight lamp can be subject to extreme influence.
For the problems referred to above, the application for a patent for invention that application number is 201410161823.2, denomination of invention is " LED fluorescent lamp tube utilizing electronic ballast for fluoresent lamp to drive and lighting " discloses a kind of LED power driver that need not be special and drives, and directly utilizes the LED fluorescent lamp tube that electronic ballast for fluoresent lamp drives.As shown in Figure 1, this LED fluorescent lamp tube is improved fluorescent tube internal circuit, this LED fluorescent lamp tube is made up of filtering high-frequency rectifier unit 100 and LED module 200, export direct current after the high-frequency alternating current that filtering high-frequency rectifier unit 100 pairs of electronic ballast for fluoresent lamps 300 export carries out rectifying and wave-filtering process and carry out Direct driver LED module 200, make LED chip luminous, filtering high-frequency rectifier unit 100 wherein comprises first to fourth diode D1 ~ D4, the first resistance R1, the second resistance R2 and electric capacity C.Although this LED fluorescent lamp tube can realize the function utilizing the luminescence of electronic ballast for fluoresent lamp 300 Direct driver LED chip, find through great many of experiments, this LED fluorescent lamp tube has following shortcoming:
1, this LED fluorescent lamp tube adds unnecessary device---and the first resistance R1, the second resistance R2 and electric capacity C, cause the waste of device on the one hand, increases the probability of circuit malfunctions on the other hand, also may there is the problem affecting illuminating effect.
2, the power of this LED fluorescent lamp tube is non-adjustable, therefore must mate the LED fluorescent lamp tube of appropriate power according to the rated output voltage of electronic ballast for fluoresent lamp 300, size of current.So, on the one hand, if do not match the LED fluorescent lamp tube of appropriate power, then the damage of LED fluorescent lamp tube may directly be caused, or even the damage of electronic ballast for fluoresent lamp.On the other hand, for the electronic ballast for fluoresent lamp that rated output voltage, electric current are all larger, for the power of the LED fluorescent lamp tube of its coupling is also larger, and, under high-power equally, the brightness of LED fluorescent lamp tube, certainly much larger than the brightness of fluorescent lamp, had so both destroyed the reasonable luminous intensity distribution of original indoor, unfavorable to the vision of people, also result in great waste of energy.
Summary of the invention
The LED daylight lamp circuit that the object of the present invention is to provide a kind of electronic ballast for fluoresent lamp to drive and the LED daylight lamp based on this LED daylight lamp circuit realiration, this LED daylight lamp and this LED daylight lamp circuit work by electronic ballast for fluoresent lamp Direct driver, do not need to configure special LED power driver, widen the application of LED daylight lamp and reduced use cost, have that energy consumption is low, good energy-conserving effect, life-span be long, the easy feature such as universal, and greatly reduce the engineering cost changing light fixture.
To achieve these goals, present invention employs following technical scheme:
The LED daylight lamp circuit that a kind of electronic ballast for fluoresent lamp drives, it is characterized in that: it comprises rectifier bridge, LED lamp bead unit, one ac voltage input of rectifier bridge is connected with one group of high-frequency ac output of electronic ballast for fluoresent lamp, another of another ac voltage input of rectifier bridge and electronic ballast for fluoresent lamp is organized high-frequency ac output and is connected, and the dither DC output end of rectifier bridge is connected with LED lamp bead unit.
A wherein ac voltage input of described rectifier bridge is connected with controllable impedance.Described controllable impedance is transformer inductance and inductance ratings value is not more than 8mH.
The LED daylight lamp that a kind of electronic ballast for fluoresent lamp drives, it is characterized in that: it comprises body, body two ends are provided with conductive metal sheet, are provided with described LED daylight lamp circuit in body, and described LED daylight lamp circuit is connected with the described electronic ballast for fluoresent lamp of outside via conductive metal sheet.
Advantage of the present invention is:
1, compared with existing LED fluorescent lamp tube, the present invention neither needs the first resistance R1 and the second resistance R2, electric capacity C is not needed yet, by the wiring design with electronic ballast for fluoresent lamp, the present invention directly utilizes rectifier bridge rectification dither direct current out to power for LED lamp bead, and on the basis of saving special LED power driver, the present invention eliminates again unnecessary resistance, capacitor element, simplify circuit structure and working stability is reliable, greatly reduce manufacturing cost and use cost.
2, by the design of controllable impedance, present invention achieves the object of the LED daylight lamp power adjustable joint driven with electronic ballast for fluoresent lamp, thus, need not as the existing LED fluorescent lamp tube driven with electronic ballast for fluoresent lamp, need the LED fluorescent lamp tube selecting to match corresponding power according to the rated output voltage of electronic ballast for fluoresent lamp, size of current.In actual use, on the one hand by regulating the size of controllable impedance, the electronic ballast for fluoresent lamp of the present invention and any model being matched, the present invention need not be worried or electronic ballast for fluoresent lamp can be damaged.On the other hand, for the electronic ballast for fluoresent lamp that rated output voltage, electric current are all larger, under the lighting environment not needing relatively high power, by the brightness of illumination regulating the size of controllable impedance to regulate LED lamp bead in the present invention, realize really energy-conservation object, avoid the waste of electric energy.
3, the present invention does not need transformation to the illuminating line of existing fluorescent lamp, electronic ballast for fluoresent lamp directly can be used to serve as LED power driver, have the advantages such as energy-conservation, simple installation, installation cost are low, easy penetration and promotion application.
Accompanying drawing explanation
Fig. 1 is the circuit structure diagram in the existing LED fluorescent lamp tube driven by electronic ballast for fluoresent lamp.
Fig. 2 is a preferred embodiment circuit diagram of LED daylight lamp circuit of the present invention.
Fig. 3 is another preferred embodiment circuit diagram of LED daylight lamp circuit of the present invention.
Fig. 4 is the operation instruction figure of fluorescent tube.
Fig. 5 is the operation instruction figure of LED daylight lamp of the present invention.
Embodiment
As shown in Figure 2, the LED daylight lamp circuit that the present invention's electronic ballast for fluoresent lamp drives comprises rectifier bridge 21, LED lamp bead unit 22, rectifier bridge 21 is made up of diode D1 ~ D4, one ac voltage input of rectifier bridge 21 is connected with one group of high-frequency ac output of electronic ballast for fluoresent lamp 11, another of another ac voltage input of rectifier bridge 21 and electronic ballast for fluoresent lamp 11 is organized high-frequency ac output and is connected, the input of electronic ballast for fluoresent lamp 11 connects 220V alternating current, the dither DC output end of rectifier bridge 21 is connected with LED lamp bead unit 22.
Here it should be noted that, often group high-frequency ac output on electronic ballast for fluoresent lamp 11 is made up of two terminals, as Fig. 2 to Fig. 4, on electronic ballast for fluoresent lamp 11 (also can referring to the electronic ballast for fluoresent lamp 300 shown in Fig. 1), pin 1,2 is one group of high-frequency ac output, and pin 3,4 is another group high-frequency ac output.In fluorescent lamp uses, high-frequency ac output of often organizing on electronic ballast for fluoresent lamp 11 is used for being connected with two filament terminals of fluorescent tube 50 one end, as shown in Figure 4, that is, two terminals often organizing high-frequency ac output on electronic ballast for fluoresent lamp 11 are used for being connected with two filament terminals of fluorescent tube 50 one end respectively, and these two filament terminals are connected with the filament 51 in fluorescent tube 50.And in the present invention, namely the design that two ac voltage inputs of rectifier bridge 21 are connected with each group of high-frequency ac output of electronic ballast for fluoresent lamp 11 is respectively by two terminals short in each group of high-frequency ac output of electronic ballast for fluoresent lamp 11.
In actual design, LED lamp bead unit 22 can be made up of multiple LED lamp bead strings of parallel connection, and LED lamp bead string is made up of the LED lamp bead of multiple series connection.Certainly, in actual use, LED lamp bead unit 22 also can have other the form of the composition, is not limited to above-mentioned.
As Fig. 2, civil power 220V alternating current is converted to high frequency low voltage (about 110V) alternating current and exports by electronic ballast for fluoresent lamp 11, then this high frequency low voltage AC rectification is that dither direct current exports LED lamp bead unit 22 to by rectifier bridge 21, and the LED lamp bead in Direct driver LED lamp bead unit 22 is luminous.
Through experimental results demonstrate, LED daylight lamp circuit of the present invention can use electronic ballast for fluoresent lamp 11 Direct driver completely, describes in detail below:
Compared with the existing LED fluorescent lamp tube shown in Fig. 1, the present invention neither needs the first resistance R1 and the second resistance R2, does not also need electric capacity C.
First, the first resistance R1 in existing LED fluorescent lamp tube and the second resistance R2 can remove, this is because electronic ballast for fluoresent lamp 11 needs heat filament 51 to start illumination when driving fluorescent tube 50.Designing the first resistance R1 and the second resistance R2 in existing LED fluorescent lamp tube is the filament 51 (i.e. electrode) driving fluorescent tube 50 two ends in order to simulate electronic ballast for fluoresent lamp 11.But when driving LED daylight lamp circuit, do not need heat filament, only need to supply the corresponding direct voltage of LED lamp bead, LED lamp bead can be luminous, therefore do not need to design first, second resistance R1, R2.
And, confirm through experiment, electronic ballast for fluoresent lamp is when driving fluorescent tube 50 normally to work, the two ends of the filament 51 that what pin 1 was connected with pin 2 is on fluorescent tube 50 one end, because the resistance of filament 51 is very little, therefore can think between pin 1 and pin 2 it is short circuit, be also in like manner short circuit between pin 3 and pin 4.So in the present invention, during with electronic ballast for fluoresent lamp 11 driving LED daylight lamp circuit, do not add the first resistance R1 and the second resistance R2, but allow pin 1 and pin 2 short circuit, pin 3 and pin 4 short circuit, this connected mode is all correct principle or viewed from experimental result.
Secondly, the electric capacity C in existing LED fluorescent lamp tube can remove, and directly powers to LED lamp bead with the dither direct current that rectifier bridge 21 exports.This is because, the frequency of the alternating current that the various electronic ballast for fluoresent lamps 11 occurred on the market at present export is all much larger than 50Hz, the resolution frequency of human eye is then lower than 50Hz, so in the present invention, for the resolution frequency of human eye, the frequency of the alternating current exported by electronic ballast for fluoresent lamp 11 all thinks high frequency.And the high-frequency alternating current that electronic ballast for fluoresent lamp 11 exports exports after rectifier bridge 21 is the Rectified alternating current of high frequency, this Rectified alternating current is that voltage amplitude can change, its frequency still remains on high frequency, frequency will much larger than 50Hz, therefore it is no problem for carrying out Direct driver LED lamp bead with this dither direct current, the naked eyes of people not to experience stroboscopic (the frequency 100Hz of current incandescent lamp, people can not feel stroboscopic).So filtering process need not be carried out by electric capacity C to Rectified alternating current again obtain straight direct current, by straight DC powered LED lamp bead.And to be filtered into galvanic electric capacity be withstand voltage or capacitance all needs larger alternating current, electric capacity volume will be made so very large, probably electric capacity cannot be installed to fluorescent tube inside, bring very large difficulty can to production and assembling, if select the Chip-R mentioned in existing LED fluorescent lamp tube, due to the restriction of encapsulation, the capacitance of electric capacity and withstand voltage all can not be very large, thus do not reach the object being filtered into direct current yet.This electric capacity C can remove as fully visible.
In actual design, as shown in Figure 3, a wherein ac voltage input of rectifier bridge 21 can be connected with controllable impedance L.Preferably, controllable impedance L can be transformer inductance make and the span of its inductance ratings value for being greater than 0 and being less than or equal to 8 milihenries.
In actual use, the LED daylight lamp circuit of the present invention of corresponding power need not be mated according to the rated output voltage of electronic ballast for fluoresent lamp 11, size of current.This is because, by the adjustment of the inductance value size to controllable impedance L, the effect of electric current into the corresponding size of LED daylight lamp circuits share of the present invention and voltage can be played, thus the corresponding electric current that have adjusted in LED lamp bead, voltage, serve the object regulating LED lamp bead unit 22 power, so that LED lamp bead can not be made to be damaged.But it should be noted that the inductance value of controllable impedance L should design according to electronic ballast for fluoresent lamp 11 output voltage size and by the watt level requirement of the LED daylight lamp circuit of demand selection.
In addition, by the adjustment of the inductance value size to controllable impedance L, the object regulating LED lamp bead illumination effect also can be played.During when being in the lighting environment not needing relatively high power, by regulating the inductance value size of controllable impedance L, the electric current regulating LED lamp bead to relate to and voltage, to reduce the actual power of LED lamp bead, thus reach the object of the LED lamp bead brightness of illumination regulated in the present invention, realize real energy-conservation, avoid the waste of electric energy.
And for existing LED fluorescent lamp tube, because the rated output voltage of the electronic ballast for fluoresent lamp of different model, electric current are different, therefore, need to design the composition form of LED chip (LED lamp bead) in LED module for the rated output voltage of electronic ballast for fluoresent lamp and size of current and select the LED chip of appropriate power, design and selection course waste time and energy, and certainly will be difficult to be widely applied.
In addition, the invention allows for the LED daylight lamp that a kind of electronic ballast for fluoresent lamp drives, it comprises transparent tube body 60, body 60 two ends are provided with conductive metal sheet 61, be provided with the invention described above LED daylight lamp circuit in body 60, the invention described above LED daylight lamp circuit is connected with the electronic ballast for fluoresent lamp 11 of outside via conductive metal sheet 61.
As shown in Figure 5, two groups of high-frequency ac outputs of electronic ballast for fluoresent lamp 11 are connected with the conductive metal sheet 61 at body 60 two ends respectively, and two ac voltage inputs of rectifier bridge 21 in body 60 are connected (when being designed with controllable impedance L with the conductive metal sheet 61 at body 60 two ends respectively, an ac voltage input of rectifier bridge 21 is connected with the conductive metal sheet 61 of body 60 one end via controllable impedance L, and another ac voltage input of rectifier bridge 21 is directly connected with the conductive metal sheet 61 of body 60 other end), therefore, when LED daylight lamp of the present invention is replaced fluorescent tube 50 shown in Fig. 4, do not need to do any transformation to existing circuit, directly replace fluorescent tube 50 by LED daylight lamp of the present invention.
In the present invention, electronic ballast for fluoresent lamp 11 is existing devices of this area, its outlet side has a resonant circuit, and the input (namely between resonant circuit and the input side of electronic ballast for fluoresent lamp) of resonant circuit can be connected various functional circuit, and resonant circuit is made up of inductance and electric capacity, as shown in Figure 2, usually, electric capacity is connected between pin 2 and pin 3, and pin 1 or pin 4 are connected with inductance, at this, other circuit of electronic ballast for fluoresent lamp inside does not here describe in detail.
Advantage of the present invention is:
1, compared with existing LED fluorescent lamp tube, the present invention neither needs the first resistance R1 and the second resistance R2, electric capacity C is not needed yet, by the wiring design with electronic ballast for fluoresent lamp, the present invention directly utilizes rectifier bridge rectification dither direct current out to power for LED lamp bead, and on the basis of saving special LED power driver, the present invention eliminates again unnecessary resistance, capacitor element, simplify circuit structure and working stability is reliable, greatly reduce manufacturing cost and use cost.
2, by the design of controllable impedance, present invention achieves the object of the LED daylight lamp power adjustable joint driven with electronic ballast for fluoresent lamp, thus, need not as the existing LED fluorescent lamp tube driven with electronic ballast for fluoresent lamp, need the LED fluorescent lamp tube selecting to match corresponding power according to the rated output voltage of electronic ballast for fluoresent lamp, size of current.In actual use, on the one hand by regulating the size of controllable impedance, the electronic ballast for fluoresent lamp of the present invention and any model being matched, the present invention need not be worried or electronic ballast for fluoresent lamp can be damaged.On the other hand, for the electronic ballast for fluoresent lamp that rated output voltage, electric current are all larger, under the lighting environment not needing relatively high power, by the brightness of illumination regulating the size of controllable impedance to regulate LED lamp bead in the present invention, realize really energy-conservation object, avoid the waste of electric energy.
3, the present invention does not need transformation to the illuminating line of existing fluorescent lamp, electronic ballast for fluoresent lamp directly can be used to serve as LED power driver, have the advantages such as energy-conservation, simple installation, installation cost are low, easy penetration and promotion application.
The know-why being more than preferred embodiment of the present invention and using; for a person skilled in the art; when not deviating from the spirit and scope of the present invention; any based on apparent changes such as the equivalent transformation on technical solution of the present invention basis, simple replacements, all belong within scope.
Claims (5)
1. the LED daylight lamp circuit driven with electronic ballast for fluoresent lamp, it is characterized in that: it comprises rectifier bridge, LED lamp bead unit, one ac voltage input of rectifier bridge is connected with one group of high-frequency ac output of electronic ballast for fluoresent lamp, another of another ac voltage input of rectifier bridge and electronic ballast for fluoresent lamp is organized high-frequency ac output and is connected, and the dither DC output end of rectifier bridge is connected with LED lamp bead unit.
2. LED daylight lamp circuit according to claim 1, is characterized in that:
A wherein ac voltage input of described rectifier bridge is connected with controllable impedance.
3. LED daylight lamp circuit according to claim 2, is characterized in that:
Described controllable impedance is transformer inductance and inductance ratings value is not more than 8mH.
4. LED daylight lamp circuit according to claim 1, is characterized in that:
Described LED lamp bead unit is made up of multiple LED lamp bead strings of parallel connection, and LED lamp bead string is made up of the LED lamp bead of multiple series connection.
5. the LED daylight lamp driven with electronic ballast for fluoresent lamp, it is characterized in that: it comprises body, body two ends are provided with conductive metal sheet, be provided with the LED daylight lamp circuit according to any one of Claims 1-4 in body, described LED daylight lamp circuit is connected with the described electronic ballast for fluoresent lamp of outside via conductive metal sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410802584.4A CN104853473A (en) | 2014-12-19 | 2014-12-19 | LED fluorescent lamp circuit employing fluorescent lamp electronic ballast for driving and LED fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410802584.4A CN104853473A (en) | 2014-12-19 | 2014-12-19 | LED fluorescent lamp circuit employing fluorescent lamp electronic ballast for driving and LED fluorescent lamp |
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|---|---|
| CN104853473A true CN104853473A (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410802584.4A Pending CN104853473A (en) | 2014-12-19 | 2014-12-19 | LED fluorescent lamp circuit employing fluorescent lamp electronic ballast for driving and LED fluorescent lamp |
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| CN (1) | CN104853473A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106102230A (en) * | 2016-06-28 | 2016-11-09 | 江苏林洋照明科技有限公司 | A kind of LED lamp tube drive circuit of multi input |
| CN107135582A (en) * | 2017-07-04 | 2017-09-05 | 黄燕耀 | A kind of method and device of LED power supply circuits direct current supply |
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| CN101730347A (en) * | 2009-12-31 | 2010-06-09 | 深圳市宝驰达实业有限公司 | LED driving circuit for illumination |
| CN203605028U (en) * | 2013-10-24 | 2014-05-21 | 广东凯乐斯光电科技有限公司 | LED lamp tube based on traditional electronic ballast |
| CN103929858A (en) * | 2014-04-15 | 2014-07-16 | 刘坚 | LED fluorescent tube and illumination lamp driven by fluorescent lamp electronic ballast |
| CN204291510U (en) * | 2014-12-19 | 2015-04-22 | 北京澄通光电股份有限公司 | LED daylight lamp circuit, LED daylight lamp that a kind of electronic ballast for fluoresent lamp drives |
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2014
- 2014-12-19 CN CN201410802584.4A patent/CN104853473A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5872430A (en) * | 1996-08-14 | 1999-02-16 | Motorola Inc. | Single switch electronic ballast with low in-rush current |
| CN101730347A (en) * | 2009-12-31 | 2010-06-09 | 深圳市宝驰达实业有限公司 | LED driving circuit for illumination |
| CN203605028U (en) * | 2013-10-24 | 2014-05-21 | 广东凯乐斯光电科技有限公司 | LED lamp tube based on traditional electronic ballast |
| CN103929858A (en) * | 2014-04-15 | 2014-07-16 | 刘坚 | LED fluorescent tube and illumination lamp driven by fluorescent lamp electronic ballast |
| CN204291510U (en) * | 2014-12-19 | 2015-04-22 | 北京澄通光电股份有限公司 | LED daylight lamp circuit, LED daylight lamp that a kind of electronic ballast for fluoresent lamp drives |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106102230A (en) * | 2016-06-28 | 2016-11-09 | 江苏林洋照明科技有限公司 | A kind of LED lamp tube drive circuit of multi input |
| CN106102230B (en) * | 2016-06-28 | 2017-10-20 | 江苏林洋照明科技有限公司 | A kind of LED tube drive circuit of multi input |
| CN107135582A (en) * | 2017-07-04 | 2017-09-05 | 黄燕耀 | A kind of method and device of LED power supply circuits direct current supply |
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Application publication date: 20150819 |