CN202931620U - LED fluorescent lamp tube compatible with electronic ballast and LED fluorescent lamp - Google Patents
LED fluorescent lamp tube compatible with electronic ballast and LED fluorescent lamp Download PDFInfo
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- CN202931620U CN202931620U CN201220561087.6U CN201220561087U CN202931620U CN 202931620 U CN202931620 U CN 202931620U CN 201220561087 U CN201220561087 U CN 201220561087U CN 202931620 U CN202931620 U CN 202931620U
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- led fluorescent
- fluorescent tube
- fluorescent lamp
- electronic ballast
- circuit
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Abstract
The utility model discloses an LED fluorescent lamp tube compatible with an electronic ballast and an LED fluorescent lamp. An LED fluorescent lamp tube driving circuit is comprised. The input end of the LED fluorescent lamp tube driving circuit is connected in parallel with a high voltage absorption circuit. The high voltage absorption circuit comprises a voltage judgment circuit and an absorption circuit, wherein the voltage judgment circuit and the absorption circuit are connected in turn. By increasing the high voltage absorption circuit, high voltage produced by the output of the electronic ballast is absorbed, and the compatibility to the electronic ballast is realized. The utility model further discloses two kinds of different forms of LED fluorescent lamps. The LED fluorescent lamp tube compatible with the electronic ballast not only can be directly arranged on an LED fluorescent lamp holder, but also can be directly arranged on a fluorescent lamp holder. The compatibility to the electronic ballast on the fluorescent lamp holder is realized. The LED fluorescent lamp tube can be used without disassembling the electronic ballast on the fluorescent lamp holder. The installation simplicity is greatly improved, and the installation cost is greatly reduced. The application prospect is broad.
Description
Technical field
The utility model relates to LED fluorescent lamp field, is specifically related to a kind of LED fluorescent tube and LED fluorescent lamp of compatible electronic ballast.
Background technology
Fluorescent lamp is as the room lighting product, obtained in the past few decades using widely, but day by day in short supply due to the energy, energy-conservation one of the index that present All Around The World pays close attention to the most that becomes already, therefore, the green illumination industry also becomes one of the most very powerful and exceedingly arrogant at present industry.
LED illumination has as the green illumination product: the characteristics such as energy-conservation, long-life, cold light source, pollution-free (without mercury, unleaded), high light efficiency, high color rendering index (CRI) are inevitable directions of following illuminating product development.The LED fluorescent lamp has above characteristics as the LED illuminating product, is a good substitute of conventional fluorescent lamps.
Fluorescent lamp comprises fluorescent tube and bracket for fluorescent tube, electric ballast is installed on bracket for fluorescent tube, characteristic due to conventional fluorescent lamps, need the high pressure about a 1000V to trigger startup, need a high frequency (approximately 40kHz) electric current to keep at run duration, therefore, fluorescent tube need to have one to be its power supply with the supporting electric ballast of its performance characteristics, and these electric ballasts can be good at mating fluorescent tube.
Due to the LED(light-emitting diode) be a kind of semiconductor device, do not need preheating in the time of its work, do not need high pressure to trigger yet, only need a constant current with its coupling to drive.The LED fluorescent lamp comprises LED fluorescent tube and LED daylight lamp holder, the LED fluorescent tube is built-in with the LED fluorescent tube driving circuit, and a kind of existing LED fluorescent tube driving circuit comprises filter network, rectification circuit, filter capacitor and the voltage conversion circuit that connects successively.Present most LED fluorescent tube driving circuit is all that the form that has adopted constant current to drive is come driving LED, but the supply power voltage of this type of LED fluorescent tube driving circuit is all to need civil power (85 ~ 265Vac/50 ~ 60Hz) damages or the LED fluorescent tube driving circuit is not directly worked if directly the LED fluorescent tube is arranged on the bracket for fluorescent tube of tube with electronic ballast to cause the LED fluorescent tube driving circuit.Therefore, can't realize the compatibility of LED fluorescent tube and electric ballast.
Although can when replacing fluorescent tube with the LED fluorescent tube, electric ballast be removed, but this can increase a lot of labour costs, especially in American-European, Japan and other countries, the ordinary people is the dismounting electric ballast arbitrarily, need to come dismounting by special staff, just be equivalent to the price of a LED fluorescent tube in electric ballast spent cost of these national dismounting, installation cost is higher.
Obtained in the past few decades due to fluorescent lamp using widely, therefore, general all with electric ballast on bracket for fluorescent tube, if the LED fluorescent tube can be directly installed on the bracket for fluorescent tube of tube with electronic ballast, can be so that the simplicity that the LED fluorescent tube is installed improves greatly, installation cost reduces greatly, will have wide market prospects.
That general electric ballast is exported is high-frequency current (approximately 40kHz), need to add filter circuit due to common LED fluorescent tube driving circuit at the input of its circuit, solve the electromagnetic interference (EMI) problem of circuit, if this filter circuit does not design, when connecting electric ballast, the LED fluorescent tube can not work normally.
the patent No. is that the utility model patent of ZL 200920195059.5 discloses a kind of LED fluorescent lamp circuit, this circuit comprises the power supply that connects successively, the ballast filtration module, rectification module, filtration module and LED load, this ballast filtration module comprises a ballast inductance and the first filter capacitor that is connected with the ballast inductance, the high-frequency current of electric ballast being exported by the ballast filtration module carries out filtering, thereby make the LED daylight lamp fixture to work, realize the compatibility of LED daylight lamp fixture and electric ballast, but this ballast filtration module stability in use is not good, also limited to high-frequency current filtering.
The utility model content
The utility model provides a kind of LED fluorescent tube of compatible electronic ballast, be connected with the high pressure absorbing circuit by the input on common LED fluorescent tube driving circuit, can absorb the high pressure that electric ballast output produces, realize the compatibility to electric ballast.
A kind of LED fluorescent tube of compatible electronic ballast, comprise the LED fluorescent tube driving circuit, input at described LED fluorescent tube driving circuit is parallel with the high pressure absorbing circuit, and described high pressure absorbing circuit comprises voltage decision circuitry and the absorbing circuit that is connected successively.
The voltage decision circuitry is used for judging whether electric ballast produces high pressure, when electric ballast output high pressure, namely when the output voltage of electric ballast during more than or equal to the voltage limit value, the voltage decision circuitry judges, absorbing circuit absorbs output voltage, guarantees that the output voltage of this moment can not be passed to the LED fluorescent tube driving circuit; High voltage disappearance when electric ballast, namely when the output voltage of electric ballast during less than the voltage limit value, the voltage decision circuitry judges, absorbing circuit is not worked, the electric ballast output voltage of this moment is passed to the LED fluorescent tube driving circuit, thereby make the normal operation of LED fluorescent tube driving circuit, light the LED fluorescent lamp.
As preferably, described voltage decision circuitry comprises the first resistance, the first electric capacity and overvoltage actuating switch, the input of the described LED fluorescent tube driving circuit of access in parallel after described the first resistance and the first capacitances in series; Described absorbing circuit comprises transformer, the second resistance and the second electric capacity, and the two ends of the secondary winding of described transformer, the second resistance and the second capacitances in series form loop, an end ground connection of the secondary winding of described transformer; The former limit winding of described transformer is connected with described overvoltage actuating switch afterwards and described the first Capacitance parallel connection.When the electric ballast output voltage during greater than the voltage limit value, the conducting of overvoltage actuating switch, the electric ballast output voltage is passed to the RC network that is comprised of the second resistance and the second electric capacity by transformer, and through the overdamping concussion, output voltage is decreased to safety value.Above-mentioned concrete voltage decision circuitry and absorbing circuit principle are simple, and circuit layout is easy, are easy to realize, the element low price can be so that the price of the LED fluorescent tube of the utility model compatible electronic ballast be also more reasonable.
Further preferred, described overvoltage actuating switch is comparator and switch, it is perhaps piezo-resistance, two inputs of comparator receive respectively electric ballast output voltage signal and reference voltage, reference voltage and voltage limit value are complementary, and when comparator received the electric ballast output voltage more than or equal to reference voltage, comparator sent a control signal, will starting switch closed, thus make the work of high pressure absorbing circuit.When the electric ballast output voltage during greater than the voltage limit value, the piezo-resistance conducting, thus make the work of high pressure absorbing circuit.
As preferably, described LED fluorescent tube driving circuit comprises filter network, rectification circuit, filter capacitor and the voltage conversion circuit that connects successively.Wherein, described filter network carries out filtering to the output voltage of the electric ballast that receives, to obtain alternating voltage; Described rectification circuit is connected with described filter network, so that described alternating voltage is carried out rectification, to obtain the direct voltage of pulsation; Described filter capacitor receives described direct voltage, to be converted into a level and smooth direct voltage; Described voltage conversion circuit receives described level and smooth direct voltage, and produces certain voltage and current, comes the LED light source in the driving LED fluorescent lamp.
The LED fluorescent tube of the utility model compatible electronic ballast not only can be directly installed on the LED daylight lamp holder, but also can be directly installed on bracket for fluorescent tube, the compatibility of realization to the electric ballast on bracket for fluorescent tube provides two kinds of multi-form LED fluorescent lamps.
A kind of LED fluorescent lamp comprises the LED fluorescent tube of LED daylight lamp holder and described compatible electronic ballast.
A kind of LED fluorescent lamp comprises the LED fluorescent tube of bracket for fluorescent tube and described compatible electronic ballast.
Compared with prior art, the utlity model has following advantage:
The LED fluorescent tube of the utility model compatible electronic ballast, the high pressure startup stage that its high pressure absorbing circuit can be with electric ballast absorbs, thereby avoiding it to flow into the LED fluorescent tube driving circuit causes the LED fluorescent tube driving circuit to damage, guarantee the LED fluorescent tube normal operation of the utility model compatible electronic ballast, thereby guaranteed the normal operation of LED fluorescent lamp.
The LED fluorescent tube of the utility model compatible electronic ballast is when installing and using, both can be directly installed on does not have on the LED of electric ballast daylight lamp holder, also can be directly installed on the bracket for fluorescent tube with electric ballast, the electric ballast that need not to pull down on bracket for fluorescent tube can use, greatly improved the simplicity of installing and reduced installation cost, having had broad application prospects.
Description of drawings
Fig. 1 is fluorescent lamp starting of the prior art-steady state voltage curve chart;
Fig. 2 is the theory diagram of circuit in the LED fluorescent tube of the utility model compatible electronic ballast;
Fig. 3 is the theory diagram of the LED fluorescent tube mesohigh absorbing circuit of the utility model compatible electronic ballast;
Fig. 4 is the structural representation of the LED fluorescent tube of the utility model compatible electronic ballast.
Embodiment
Below in conjunction with accompanying drawing Fig. 1 to Fig. 4, LED fluorescent tube and the LED fluorescent lamp of the utility model compatible electronic ballast are described in further detail.
As shown in Figure 1, be fluorescent lamp starting in prior art-steady state voltage curve, comprise high voltage startup, transient state and three states of stable state.Fluorescent lamp triggers startup by the high pressure of electric ballast output, electric ballast need to be installed on bracket for fluorescent tube, and the LED fluorescent tube does not need high pressure to trigger, only needing a constant current with its coupling to drive gets final product, therefore, the utility model is connected with the high pressure absorbing circuit by the input on common LED fluorescent tube driving circuit 209 and realizes that the LED fluorescent tube is to the compatibility of electric ballast.
As shown in Figure 2, circuit in the LED fluorescent tube of the utility model compatible electronic ballast comprises LED fluorescent tube driving circuit 209, is parallel with high pressure absorbing circuit 208 at the input of LED fluorescent tube driving circuit 209 (being the output voltage AC end of electric ballast).LED fluorescent tube driving circuit 209 comprises filter network 201, rectification circuit 202, filter capacitor 203 and the voltage conversion circuit 204 that connects successively.Voltage conversion circuit 204 is connected with LED light source 205.Wherein, the output voltage AC of 201 pairs of electric ballasts that receive of filter network carries out filtering, to obtain alternating voltage; Rectification circuit 202 is connected with filter network 201, so that alternating voltage is carried out rectification, to obtain the direct voltage of pulsation; Filter capacitor 203 receives direct voltage, to be converted into a level and smooth direct voltage; Voltage conversion circuit 204 receives level and smooth direct voltage, and produces certain voltage and current, comes the LED light source 205 in the driving LED fluorescent lamp.Filter network 201, rectification circuit 202, filter capacitor 203 and voltage conversion circuit 204 all can adopt prior art.
As shown in Figure 2, high pressure absorbing circuit 208 comprises voltage decision circuitry 206 and the absorbing circuit 207 that is connected successively, the high tension voltage AC that high pressure absorbing circuit 208 is exported in order to the startup stage electric ballast that is received in electric ballast, high pressure can be absorbed, avoid it to flow into LED fluorescent tube driving circuit 209 and cause the damage of circuit.During more than or equal to the voltage limit value, high pressure absorbing circuit 208 absorbs the output voltage AC of electric ballast as the output voltage AC of electric ballast, and the output voltage AC that guarantees this moment can not be passed to the LED fluorescent tube driving circuit 209 in the LED fluorescent tube; During less than the voltage limit value, high pressure absorbing circuit 208 is not worked as the output voltage AC of electric ballast, and this moment, the output voltage AC of electric ballast was passed to the LED fluorescent tube driving circuit 209 of LED fluorescent tube.
As shown in Figure 3, high pressure absorbing circuit 208 comprises voltage decision circuitry 206 and the absorbing circuit 207 that is connected successively, Fig. 3 is a kind of concrete form of voltage decision circuitry 206 and absorbing circuit 207, voltage decision circuitry 206 comprises the first resistance R 1, the first capacitor C 1 and piezo-resistance RV1, limit value voltage and the voltage limit value of piezo-resistance RV1 are complementary, the input of access LED fluorescent tube driving circuit 209 in parallel (being the output voltage AC end of electric ballast) after the first resistance R 1 and the first capacitor C 1 series connection; Absorbing circuit 208 comprises transformer T1, the second resistance R 2 and the second capacitor C 2, the two ends of the secondary winding of transformer T1, the second resistance R 2 and the second capacitor C 2 series connection form the loop, the RC network that the second resistance R 2 and the second capacitor C 2 form, one end ground connection of the secondary winding of transformer T1, the i.e. relatively low end ground connection of the voltage of the secondary winding of transformer T1; It is in parallel with the first capacitor C 1 after the former limit winding of transformer T1 is connected with piezo-resistance RV1.As electric ballast output voltage AC during more than or equal to the voltage limit value, piezo-resistance RV1 conducting, electric ballast output voltage AC is passed to the RC network that is comprised of the second resistance R 2 and the second capacitor C 2 by transformer T1, through the overdamping concussion, output voltage is decreased to safety value.As the output voltage AC of electric ballast during less than the voltage limit value, not conducting of piezo-resistance RV1, output voltage AC normal delivery is to LED fluorescent tube driving circuit 209.
As shown in Figure 4, be the LED fluorescent tube of the utility model compatible electronic ballast, comprise LED fluorescent tube driving circuit 209, high pressure absorbing circuit 208 and the LED light source 205 that is formed by a plurality of LED.
The LED fluorescent tube of the utility model compatible electronic ballast not only can be directly installed on the LED daylight lamp holder, but also can be directly installed on bracket for fluorescent tube, the compatibility of realization to the electric ballast on bracket for fluorescent tube provides two kinds of multi-form LED fluorescent lamps.A kind of LED fluorescent lamp comprises the LED fluorescent tube of LED daylight lamp holder and described compatible electronic ballast.Another kind of LED fluorescent lamp comprises the LED fluorescent tube of bracket for fluorescent tube and described compatible electronic ballast.
In sum, adopt the LED fluorescent tube of the utility model compatible electronic ballast, by having the high pressure absorbing circuit 208 of predeterminated voltage limit value, the output voltage AC of the high voltage numerical value that produces the startup stage of with electric ballast absorbs, avoid it to flow into LED fluorescent tube driving circuit 209 and cause damaging LED fluorescent tube driving circuit 209, make the LED fluorescent tube can the compatible electronic ballast.Above compatible electronic rectifier LED fluorescent tube to foundation preferred embodiment of the present utility model has carried out detailed description, and those of ordinary skills can know accordingly other technologies or structure and circuit layout, element etc. by inference and all can be applicable to described embodiment.
Claims (6)
1. the LED fluorescent tube of a compatible electronic ballast, comprise the LED fluorescent tube driving circuit, it is characterized in that, be parallel with the high pressure absorbing circuit at the input of described LED fluorescent tube driving circuit, described high pressure absorbing circuit comprises voltage decision circuitry and the absorbing circuit that is connected successively.
2. the LED fluorescent tube of compatible electronic ballast according to claim 1, it is characterized in that, described voltage decision circuitry comprises the first resistance, the first electric capacity and overvoltage actuating switch, the input of the described LED fluorescent tube driving circuit of access in parallel after described the first resistance and the first capacitances in series;
Described absorbing circuit comprises transformer, the second resistance and the second electric capacity, and the two ends of the secondary winding of described transformer, the second resistance and the second capacitances in series form loop, an end ground connection of the secondary winding of described transformer;
The former limit winding of described transformer is connected with described overvoltage actuating switch afterwards and described the first Capacitance parallel connection.
3. the LED fluorescent tube of compatible electronic ballast according to claim 2, is characterized in that, described overvoltage actuating switch is comparator and switch, is perhaps piezo-resistance.
4. the LED fluorescent tube of compatible electronic ballast according to claim 1, is characterized in that, described LED fluorescent tube driving circuit comprises filter network, rectification circuit, filter capacitor and the voltage conversion circuit that connects successively.
5. a LED fluorescent lamp, is characterized in that, comprises the LED fluorescent tube of LED daylight lamp holder and the described compatible electronic ballast of claim 1 ~ 4 any one.
6. a LED fluorescent lamp, is characterized in that, comprises the LED fluorescent tube of the described compatible electronic ballast of bracket for fluorescent tube and claim 1 ~ 4 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220561087.6U CN202931620U (en) | 2012-10-29 | 2012-10-29 | LED fluorescent lamp tube compatible with electronic ballast and LED fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220561087.6U CN202931620U (en) | 2012-10-29 | 2012-10-29 | LED fluorescent lamp tube compatible with electronic ballast and LED fluorescent lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202931620U true CN202931620U (en) | 2013-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220561087.6U Expired - Fee Related CN202931620U (en) | 2012-10-29 | 2012-10-29 | LED fluorescent lamp tube compatible with electronic ballast and LED fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202931620U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016169074A1 (en) * | 2015-04-22 | 2016-10-27 | 罗崇斌 | Led lamp for directly replacing instant-start fluorescent tube |
| US9557044B2 (en) | 2014-10-20 | 2017-01-31 | Energy Focus, Inc. | LED lamp with dual mode operation |
| WO2017020219A1 (en) * | 2015-08-03 | 2017-02-09 | 常州明石晶电科技有限公司 | Activation system applicable to led lighting device and led lighting device |
-
2012
- 2012-10-29 CN CN201220561087.6U patent/CN202931620U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9557044B2 (en) | 2014-10-20 | 2017-01-31 | Energy Focus, Inc. | LED lamp with dual mode operation |
| WO2016169074A1 (en) * | 2015-04-22 | 2016-10-27 | 罗崇斌 | Led lamp for directly replacing instant-start fluorescent tube |
| WO2017020219A1 (en) * | 2015-08-03 | 2017-02-09 | 常州明石晶电科技有限公司 | Activation system applicable to led lighting device and led lighting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20211029 |