CN104822215A - LED tube for directly replacement of instant start fluorescent tube - Google Patents
LED tube for directly replacement of instant start fluorescent tube Download PDFInfo
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- CN104822215A CN104822215A CN201510195342.8A CN201510195342A CN104822215A CN 104822215 A CN104822215 A CN 104822215A CN 201510195342 A CN201510195342 A CN 201510195342A CN 104822215 A CN104822215 A CN 104822215A
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- fluorescent tube
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- led lamp
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Abstract
The invention discloses an LED tube for directly replacement of an instant start fluorescent tube. The LED tube comprises a light string module and a rectifying circuit for current conversion. Two input ends of the light string module are connected with two output ends of the rectifying circuit. The LED tube further comprises a high-voltage absorbing circuit for avoiding the impact of high voltage when the tube starts on the LED. Tube input ends are connected with two input ends of the rectifying circuit through the high-voltage absorbing circuit. When the tube is starts, the high-voltage absorbing circuit will absorb the high voltage outputted when the instant start fluorescent tube starts, the impact of the high voltage when the tube starts on the LED can be effectively avoided, and the instant start fluorescent tube can be directly replaced without changing an original fluorescent tube.
Description
Technical field
The present invention relates to a kind of LED lamp tube, particularly a kind of LED lamp tube directly can replacing instantaneous starting fluorescent tube.
Background technology
LED is widely used with the feature of its energy-conserving and environment-protective.In LED large-scale application before illumination, the application of fluorescent lamp is very extensive, and under the background that LED comes into one's own day by day, how making LED replace rapidly fluorescent tube has become industry focus.When current LED lamp tube is replaced fluorescent tube, original ballast of must dismantling, rewiring, technical difficulty is comparatively large, and operation is comparatively complicated, and non-user can be, therefore, has obvious restriction to the extensive commercialization of LED lamp tube.
Instantaneous starting fluorescent tube (or cry start fluorescent tube fast) is do not carry out preheating to fluorescent tube and the high voltage (about 600V) that directly produced by ballast carries out cold start-up to fluorescent tube when starting, due to the characteristic of this instant start ballast, make general LED light pipe be difficult to be applied in use this ballast light fixture on.
Summary of the invention
Through carrying out thorough researching and analysing to above-mentioned light pipe and ballast, the object of the present invention is to provide a kind of instantaneous starting fluorescent tube and LED lamp tube without the need to changing original fluorescent tube circuit of can directly replacing.
The present invention solves the technical scheme that its problem adopts:
A kind of LED lamp tube directly can replacing instantaneous starting fluorescent tube, comprise being connected by multiple LED and form lamp string module, rectification circuit for current conversion, two inputs of described lamp string module are connected to two outputs of described rectification circuit, also comprise for avoiding high pressure absorbing circuit that when fluorescent tube starts, high pressure impacts LED and for receiving two fluorescent tube inputs that instant start ballast exports, two described fluorescent tube inputs pass through high pressure absorbing circuit and are connected with two inputs of rectification circuit.
Further, described rectification circuit is the bridge rectifier be made up of high-frequency diode D1, D2, D3, D4.
Further, improve as above-mentioned one, described high pressure absorbing circuit is the LC delayed type high pressure absorbing circuit be made up of inductance L 1, electric capacity C1, electric capacity C2, the time coefficient of described LC delayed type high pressure absorbing circuit is 1% to 5%S, one of them fluorescent tube input is connected to the input of rectification circuit successively by inductance L 1, electric capacity C1, another fluorescent tube input is connected to another input of rectification circuit by electric capacity C2.
Further, also comprise for compensating the reactor L2 causing power excursion due to the operating voltage inconsistency of LED own, described reactor L2 is connected on the branch road between electric capacity C2 and fluorescent tube input.
Further, the value of described reactor L2 is induction reactance in its circuit.
Further, also comprise a negative tempperature coefficient thermistor NTC, described negative tempperature coefficient thermistor NTC is connected on the branch road between electric capacity C2 and fluorescent tube input.
Further, improve as above-mentioned another kind, described high pressure absorbing circuit comprises electric capacity C1, electric capacity C2 and the transformer B1 for carrying out isolating power supply to LED, two described fluorescent tube inputs are connected on the simple winding of transformer B1 respectively by electric capacity C1, electric capacity C2, and the secondary winding of transformer B1 is connected with the input of rectification circuit.
Further, the two ends of described electric capacity C1, electric capacity C2 are arranged in parallel bleeder resistance R1, the R2 for the electric discharge when fluorescent tube quits work respectively.
Further, the positive and negative electrode two ends of described lamp string module the semistor PTC be connected with for absorbing instant start ballast High voltage output.
Further, described semistor PTC place branch road is also in series with resettable fuse PPTC.
The invention has the beneficial effects as follows: a kind of LED lamp tube directly can replacing instantaneous starting fluorescent tube that the present invention adopts, comprise lamp string module, rectification circuit for current conversion, two inputs of described lamp string module are connected to two outputs of described rectification circuit, also comprise for avoiding the high pressure absorbing circuit that when fluorescent tube starts, high pressure impacts LED, fluorescent tube input is connected with two inputs of rectification circuit by high pressure absorbing circuit.When fluorescent tube starts, high pressure absorbing circuit can absorb the high-tension electricity exported when being started by instant start ballast, effectively can avoid high pressure when fluorescent tube starts and, to the impact of LED, directly can replace instantaneous starting fluorescent tube and without the need to changing original fluorescent tube circuit.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and example, the invention will be further described.
Fig. 1 is the circuit theory diagrams of first embodiment of the invention;
Fig. 2 is the circuit theory diagrams of second embodiment of the invention;
Fig. 3 is the circuit theory diagrams of third embodiment of the invention;
Fig. 4 is the circuit theory diagrams of fourth embodiment of the invention;
Fig. 5 is the circuit theory diagrams of fifth embodiment of the invention;
Fig. 6 is the circuit theory diagrams of sixth embodiment of the invention;
Fig. 7 is the circuit theory diagrams of seventh embodiment of the invention;
Fig. 8 is the circuit theory diagrams of eighth embodiment of the invention.
Embodiment
With reference to shown in Fig. 1, the first embodiment directly can replacing the LED lamp tube of instantaneous starting fluorescent tube for the present invention is a kind of, the complete LED lamp tube that described LED lamp tube is made up of 1/2 aluminium matter fluorescent tube body, 1/2PC diffuser, aluminium matter lamp holder, aluminium matter PCB, LED and other parts.Its pipe shaft is generally that glass has T8 (24 ~ 26m/m) and T12 (34 ~ 38m/m) two kinds, and lamp holder then has Fa6; Fa8 and G13 etc., length has 2feet ~ 8feet over ten.LED lamp tube in the present invention is consistent with existing instantaneous starting fluorescent tube model specification in interface, length, external form, therefore can be directly installed in existing instantaneous starting fluorescent tube lamp socket.
Wherein said LED lamp tube circuit part comprises being connected by multiple LED and forms lamp string module LED S, rectification circuit for current conversion, two inputs of described lamp string module LED S are connected to two outputs of described rectification circuit, also comprise for avoiding high pressure absorbing circuit that when fluorescent tube starts, high pressure impacts LED and for receiving two fluorescent tube inputs 1,2 that instant start ballast exports, described two fluorescent tube inputs 1,2 pass through high pressure absorbing circuit and are connected with two inputs of rectification circuit.
Particularly, described rectification circuit is the bridge rectifier be made up of high-frequency diode D1, D2, D3, D4, carry out rectification to the high-frequency circuit that ballast exports for lamp works, the high-frequency electrical energy for common lamp works is converted to can for the direct current (HFAC/DC) of LED lamp tube work.
Described high pressure absorbing circuit is the LC delayed type high pressure absorbing circuit be made up of inductance L 1, electric capacity C1, electric capacity C2, wherein the fluorescent tube input 1 of one end is connected to an input of rectification circuit successively by inductance L 1, electric capacity C1, and other end fluorescent tube input 2 is connected to another input of rectification circuit by electric capacity C2.
Wherein when the time coefficient arranging described LC delayed type high pressure absorbing circuit is 1% to 5%S, the high voltage that exports when can start ballast realizes effective absorption, effectively can to avoid when fluorescent tube starts high pressure to the impact of LED.
Wherein said lamp string module LED S is different and selected LED by the height of watt level and colour temperature, by different series windings and and connect the light emitting host of composition fluorescent tube.
By being arranged on the LC delayed type high pressure absorbing circuit of lamp tube ends, when fluorescent tube starts, high pressure absorbing circuit can absorb the high-tension electricity exported when being started by instant start ballast, effectively can avoid high pressure when fluorescent tube starts and, to the impact of LED, directly can replace instantaneous starting fluorescent tube and without the need to changing original fluorescent tube circuit.
In order to make LED lamp tube service behaviour more stable, following improvement has been carried out to topological circuit, with reference to shown in Fig. 2, for the second embodiment of the present invention, described high pressure absorbing circuit comprises electric capacity C1, electric capacity C2 and the transformer B1 for carrying out isolating power supply to LED, described two fluorescent tube inputs 1,2 are connected on the simple winding of transformer B1 respectively by electric capacity C1, electric capacity C2, and the secondary winding of transformer B1 is connected with the input of rectification circuit.
The place different from the first embodiment is, eliminates inductance L 1 in the present embodiment, uses transformer B1 instead and carries out isolated power supply to LED, in this operating mode for one-to-one ballast be extremely stable.
LED lamp tube of the present invention, in consideration illumination and energy-conservation relation, be the most desirable with energy-conservation 38%, but also to consider the requirement of electric ballast to load, the substance experiment of crossing hundred times has been carried out by the electric ballast of the instantaneous starting fluorescent tube to each famous brand in world market, in order to more extensively adapt to the characteristic of the instantaneous starting fluorescent tube of each famous brand, multinomial technical improvement has been made based on above-mentioned two kinds of circuit, every technology essential factor of improving and the expanded application of key element, the adaptability of LED light pipe can be made more extensive, more comprehensively.
With reference to shown in Fig. 3, be the third embodiment of the present invention, on the basis of the first embodiment, introduce reactor L2, described reactor L2 is connected on the branch road between electric capacity C2 and fluorescent tube input 2.The value of described reactor L2 is in induction reactance in its circuit, and its effect compensates the power excursion caused due to the operating voltage inconsistency of LED own.
Fail safe when working to make LED lamp tube is improved, with reference to shown in Fig. 4, for the fourth embodiment of the present invention, on the basis of the 3rd embodiment, at the positive and negative electrode two ends of lamp string module LED S and the semistor PTC be connected with for absorbing instant start ballast High voltage output.The effect of semistor PTC absorbs fluorescent tube further when starting, and the impact that the high pressure of instantaneous starting fluorescent tube electronic ballast causes LED string, weak point is the loss making LED lamp tube add 1W.
In order to Loss reducing, with reference to shown in Fig. 5, for the fifth embodiment of the present invention, described semistor PTC place branch road is also in series with resettable fuse PPTC, separated thermistor PTC when its effect is 10S after LED lamp tube normally works, makes the loss of fluorescent tube reduce about 0.7W.
Be applied on the light fixture of controllable silicon SCR light modulation sub-ballast to make LED lamp tube, with reference to shown in Fig. 6, for the sixth embodiment of the present invention, negative tempperature coefficient thermistor NTC is substituted reactor L2 by the basis of the 5th embodiment, utilize the characteristic that the cold high heat of negative tempperature coefficient thermistor NTC resistance is low, complementary with the characteristic of SCR dimmer, make LED lamp tube in dimming process, brightness is bright--does not have the phenomenon of jumping in secretly--bright process.
Similarly, on the basis of the second embodiment, also can at the positive and negative electrode two ends of lamp string module LED S and the semistor PTC be connected with for absorbing instant start ballast High voltage output, form the 7th embodiment as shown in Figure 7, also on the basis of the 7th embodiment, can also be in series with resettable fuse PPTC on the branch road of semistor PTC place, form the 8th embodiment as shown in Figure 8.
In addition, in above-mentioned all embodiments, the two ends of described electric capacity C1, electric capacity C2 are arranged in parallel bleeder resistance R1, R2 for the electric discharge when fluorescent tube quits work respectively.When fluorescent tube quits work, due to the characteristic of electric capacity C1, electric capacity C2, voltage can retain in electric capacity, when opening next time, the operating voltage of fluorescent tube can overlap capacitance C1, C2 retain voltage, cause the phenomenon occurring real work overtension, and by arranging bleeder resistance R1, R2, the voltage remaining in electric capacity C1, C2 when fluorescent tube is closed is released by resistance R1, R2, then can solve the problem.
The above, just preferred embodiment of the present invention, the present invention is not limited to above-mentioned execution mode, as long as it reaches technique effect of the present invention with identical means, all should belong to protection scope of the present invention.
Claims (10)
1. directly can replace the LED lamp tube of instantaneous starting fluorescent tube for one kind, it is characterized in that: comprise being connected by multiple LED and form lamp string module, rectification circuit for current conversion, two inputs of described lamp string module are connected to two outputs of described rectification circuit, also comprise for avoiding high pressure absorbing circuit that when fluorescent tube starts, high pressure impacts LED and for receiving two fluorescent tube inputs that instant start ballast exports, two described fluorescent tube inputs pass through high pressure absorbing circuit and are connected with two inputs of rectification circuit.
2. a kind of LED lamp tube directly can replacing instantaneous starting fluorescent tube according to claim 1, is characterized in that: described rectification circuit is the bridge rectifier be made up of high-frequency diode D1, D2, D3, D4.
3. a kind of LED lamp tube directly can replacing instantaneous starting fluorescent tube according to claim 1, it is characterized in that: described high pressure absorbing circuit is the LC delayed type high pressure absorbing circuit be made up of inductance L 1, electric capacity C1, electric capacity C2, the time coefficient of described LC delayed type high pressure absorbing circuit is 1% to 5%S, one of them fluorescent tube input is connected to the input of rectification circuit successively by inductance L 1, electric capacity C1, another fluorescent tube input is connected to another input of rectification circuit by electric capacity C2.
4. a kind of LED lamp tube directly can replacing instantaneous starting fluorescent tube according to claim 3, it is characterized in that: also comprise for compensating the reactor L2 causing power excursion due to the operating voltage inconsistency of LED own, described reactor L2 is connected on the branch road between electric capacity C2 and fluorescent tube input.
5. a kind of LED lamp tube directly can replacing instantaneous starting fluorescent tube according to claim 4, is characterized in that: the value of described reactor L2 is induction reactance in its circuit.
6. a kind of LED lamp tube directly can replacing instantaneous starting fluorescent tube according to claim 3, it is characterized in that: also comprise a negative tempperature coefficient thermistor NTC, described negative tempperature coefficient thermistor NTC is connected on the branch road between electric capacity C2 and fluorescent tube input.
7. a kind of LED lamp tube directly can replacing instantaneous starting fluorescent tube according to claim 1, it is characterized in that: described high pressure absorbing circuit comprises electric capacity C1, electric capacity C2 and the transformer B1 for carrying out isolating power supply to LED, two described fluorescent tube inputs are connected on the simple winding of transformer B1 respectively by electric capacity C1, electric capacity C2, and the secondary winding of transformer B1 is connected with the input of rectification circuit.
8. a kind of LED lamp tube directly can replacing instantaneous starting fluorescent tube according to claim 3,4,6,7, is characterized in that: the two ends of described electric capacity C1, electric capacity C2 are arranged in parallel bleeder resistance R1, R2 for the electric discharge when fluorescent tube quits work respectively.
9. according to the arbitrary described a kind of LED lamp tube directly can replacing instantaneous starting fluorescent tube of claim 1 to 7, it is characterized in that: the positive and negative electrode two ends of described lamp string module the semistor PTC be connected with for absorbing instant start ballast High voltage output.
10. a kind of LED lamp tube directly can replacing instantaneous starting fluorescent tube according to claim 9, is characterized in that: described semistor PTC place branch road is also in series with resettable fuse PPTC.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510195342.8A CN104822215A (en) | 2015-04-22 | 2015-04-22 | LED tube for directly replacement of instant start fluorescent tube |
| PCT/CN2015/079055 WO2016169074A1 (en) | 2015-04-22 | 2015-05-15 | Led lamp for directly replacing instant-start fluorescent tube |
| US14/793,399 US9491816B1 (en) | 2015-04-22 | 2015-07-07 | LED tube for directly replacing instant-start fluorescent tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510195342.8A CN104822215A (en) | 2015-04-22 | 2015-04-22 | LED tube for directly replacement of instant start fluorescent tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104822215A true CN104822215A (en) | 2015-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510195342.8A Pending CN104822215A (en) | 2015-04-22 | 2015-04-22 | LED tube for directly replacement of instant start fluorescent tube |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105848351A (en) * | 2016-05-09 | 2016-08-10 | 陈文军 | Compatible LED circuit |
| EP3261412A1 (en) * | 2016-06-21 | 2017-12-27 | Alfasemi Inc. | Filament simulation circuit for led tube |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103687195A (en) * | 2012-09-24 | 2014-03-26 | 三星电子株式会社 | Light source driving device and lighting device |
| US20140225520A1 (en) * | 2013-01-24 | 2014-08-14 | Cree, Inc. | Solid-state lighting apparatus for use with florescent ballasts |
| CN204084257U (en) * | 2014-09-05 | 2015-01-07 | 卢培圣 | The T8LED fluorescent tube of a kind of compatible electronic ballast and Inductive ballast |
| CN204810661U (en) * | 2015-04-22 | 2015-11-25 | 罗崇斌 | LED fluorescent tube of instantaneous start -up fluorescent tube of direct substitution |
-
2015
- 2015-04-22 CN CN201510195342.8A patent/CN104822215A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103687195A (en) * | 2012-09-24 | 2014-03-26 | 三星电子株式会社 | Light source driving device and lighting device |
| US20140225520A1 (en) * | 2013-01-24 | 2014-08-14 | Cree, Inc. | Solid-state lighting apparatus for use with florescent ballasts |
| CN204084257U (en) * | 2014-09-05 | 2015-01-07 | 卢培圣 | The T8LED fluorescent tube of a kind of compatible electronic ballast and Inductive ballast |
| CN204810661U (en) * | 2015-04-22 | 2015-11-25 | 罗崇斌 | LED fluorescent tube of instantaneous start -up fluorescent tube of direct substitution |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105848351A (en) * | 2016-05-09 | 2016-08-10 | 陈文军 | Compatible LED circuit |
| EP3261412A1 (en) * | 2016-06-21 | 2017-12-27 | Alfasemi Inc. | Filament simulation circuit for led tube |
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Application publication date: 20150805 |
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| RJ01 | Rejection of invention patent application after publication |