CN102155648A - LED (light-emitting diode) fluorescent lamp and fluorescent lamp connecting circuit - Google Patents
LED (light-emitting diode) fluorescent lamp and fluorescent lamp connecting circuit Download PDFInfo
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- CN102155648A CN102155648A CN2010105792263A CN201010579226A CN102155648A CN 102155648 A CN102155648 A CN 102155648A CN 2010105792263 A CN2010105792263 A CN 2010105792263A CN 201010579226 A CN201010579226 A CN 201010579226A CN 102155648 A CN102155648 A CN 102155648A
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Abstract
The embodiment of the invention discloses an LED (light-emitting diode) fluorescent lamp and a fluorescent lamp connecting circuit. The LED fluorescent lamp comprises an LED fluorescent tube which comprises a first end closure and a second end closure; the two end closures respectively comprise two pins; a first inductance and a first bridge rectifier are connected in parallel between the two pins of the first end closure; a second inductance and a second bridge rectifier are connected in parallel between the two pins of the second end closure; output ends of the first bridge rectifier and the second bridge rectifier are connected in parallel with an LED lighting set; the LED lighting set comprises an LED light source group and a circuit for supplying a constant current or a constant voltage; a third inductance is connected in series between an input end of the LED lighting set and one pin of the second end closure; and a fourth inductance is connected in series between an output end of the LED lighting set and one pin of the first end closure. By adopting the LED fluorescent lamp and the fluorescent lamp connecting circuit, the LED fluorescent lamp can be directly used for replacing a fluorescent lamp under the condition that peripheral circuits of the traditional fluorescent lamp are not changed.
Description
Technical field
The present invention relates to the LED field, relate in particular to LED fluorescent lamp and fluorescent lamps connected connection circuit.
Background technology
In the traditional lighting light source, straight tube fluorescent lamp and circline are used for commercial lighting, office lighting and domestic lighting in a large number.As Fig. 1, Fig. 2 with Figure 3 shows that the circuit diagram of three kinds of at present common fluorescent lamps.As shown in Figure 1, first kind of common fluorescent lamp circuit is with in the electric ballast, and civil power is exported to four pins of fluorescent lamp circuit respectively through four outputs of electric ballast after the input input of electric ballast.As shown in Figure 2, the third common fluorescent lamp circuit is also with the Inductive ballast in first kind of mode of electric ballast replacement, itself and circuit difference shown in Figure 1 are, electric current through electric ballast sends to two pins of fluorescent lamp simultaneously by an output of electric ballast, and sends to two other pin of fluorescent lamp simultaneously by another output of electric ballast.As shown in Figure 3, another kind of common fluorescent lamp circuit comprises that an Inductive ballast, a fluorescent tube and are installed in the starter S on the starter base Y, and civil power (being usually said alternating current) is imported simultaneously from an end of Inductive ballast and an end of fluorescent lamp.
Aspect light efficiency, fluorescent lamp is better than common incandescent lamp and Halogen lamp LED greatly, and its energy-saving effect is remarkable, but the fluorescent tube of fluorescent lamp contains mercury element, and is damaged or when scrapping when fluorescent tube, causes environmental pollution easily.Development along with light source technology, the light emitting diode (LED) that the solid state light emitter performance occurred, the power savings advantages of led light source and environment-friendly advantage more surpass fluorescent lamp, therefore, in recent years, the LED lamp replaces traditional various light sources successively, on this basis, also designs fluorescent lamp based on LED to replace traditional straight tube fluorescent lamp or circline.
At present, common LED fluorescent tube comprises following several:
Fig. 4 and shown in Figure 5 be a kind of LED fluorescent lamp and the circuit diagram thereof that the most generally uses at present, as Fig. 4 and shown in Figure 5, the power supply driver that comprises a plurality of led light sources and driving LED light source in LED fluorescent-lamp tube inside, civil power enters from the two ends of fluorescent tube, this LED fluorescent lamp is after an end of fluorescent tube inserts lamp socket and energising, it is also charged that the other end does not insert the part of lamp socket, is easy to generate potential safety hazard.
For overcoming the defective of Fig. 4 and fluorescent tube shown in Figure 6, Fig. 6 and fluorescent tube shown in Figure 7 have been designed at present.As Figure 6 and Figure 7, comprise power supply driver and two LED lamp strings of two led light sources in the prior art in the fluorescent tube inside of LED fluorescent lamp, the independent two ends input from fluorescent lamp of civil power is acted in collusion to make each other's confessions to two LED fluorescent lamps respectively.Though can solve potential safety hazard like this, increase the cost of making fluorescent tube.
In addition, for overcoming the defective of Fig. 4 and fluorescent tube shown in Figure 5, Fig. 8 and fluorescent tube shown in Figure 9 have also been designed at present.As Fig. 8 and shown in Figure 9, the civil power of the prior art is only imported from an end of LED fluorescent tube, and the other end is vacant.
In addition, Figure 10 is another kind of more common LED fluorescent lamp design, and this scheme moves on to the LED power supply driver outside of fluorescent-lamp tube.Import from the two ends of LED fluorescent-lamp tube respectively behind the driving power output dc low-voltage electricity.
All there is following technological deficiency in foregoing several frequently seen LED fluorescent lamp design:
Above-mentioned various LED fluorescent lamp all can not be directly installed in Fig. 1, the traditional fluorescent lamp peripheral circuit shown in Figure 2 and be used for direct replace fluorescent lamps fluorescent tube.If above-mentioned various LED fluorescent lamps are installed in traditional fluorescent lamp circuit, more or less need to change the structure of described fluorescent lamp peripheral circuit.
Because fluorescent lamp uses in life in a large number, special is that the designed support of fluorescent lamp, lamp panel and peripheral circuit are also disposed already in a large number, if the peripheral circuit in order to use the LED fluorescent lamp with the fluorescent lamp of moulding changes, this will increase a large amount of costs, and waste a large amount of resources.Therefore present very serious hope can produce a kind of under the situation of the peripheral circuit structure that does not change fluorescent lamp, can be directly installed on the LED fluorescent lamp in the conventional fluorescent circuit for lamp.
Summary of the invention
Embodiment of the invention technical problem to be solved is, LED fluorescent lamp and fluorescent lamps connected connection circuit are provided, and to be implemented under the situation that does not change the conventional fluorescent peripheral circuit, directly uses LED fluorescent lamp replace fluorescent lamps.
The embodiment of the invention provides a kind of LED fluorescent lamp, comprise the LED fluorescent tube, described LED fluorescent tube comprises first end cap and second end cap, described first end cap and described second end cap comprise two pins respectively, in described LED fluorescent tube inside, between two pins of described first end cap, be parallel with first inductance and first bridge rectifier, between two pins of described second end cap, be parallel with second inductance and second bridge rectifier, the output parallel connection LED lamp group of described first bridge rectifier and described second bridge rectifier, described LED lamp group comprises the led light source group and is used for providing the circuit of constant current or constant voltage to described led light source group, between a pin of the input of described LED lamp group and described second end cap, be in series with the 3rd inductance, between a pin of the output of described LED lamp group and described first end cap, be in series with the 4th inductance.
Preferable, the output of described the 3rd inductance and with pin that described output links to each other between series connection first electric capacity;
The output of described the 4th inductance and with pin that described output links to each other between series connection second electric capacity.
Preferable, after described first inductance, before described first bridge rectifier, also be parallel with the circuit that forms by the 3rd electric capacity and the series connection of first resistance between two pins of described first end cap;
After described second inductance, before described second bridge rectifier, also be parallel with the circuit that forms by the 4th electric capacity and the series connection of second resistance between two pins of described second end cap.
Perhaps, the output of described first inductance and with pin that described output links to each other between series connection the 5th electric capacity;
The output of described second inductance and with pin that described output links to each other between series connection the 6th electric capacity.
Preferable, LED fluorescent lamp of the present invention after described first inductance, before described first bridge rectifier, also is parallel with the circuit that is formed by the 3rd electric capacity and the series connection of first resistance between two pins of described first end cap; After described second inductance, before described second bridge rectifier, when also being parallel with the circuit that forms by the series connection of the 4th electric capacity and second resistance between two pins of described second end cap, the output of described first inductance and with pin that described output links to each other between connect one to make the described first inductance original state be first switch element of off-state; The output of described second inductance and with pin that described output links to each other between series connection one to make the described second inductance original state be the second switch element of off-state.
Preferable, between described first inductance and described first switch element, also be in series with the 7th electric capacity;
Between described second inductance and described second switch element, also be in series with the 8th electric capacity.
Preferable, described first switch element and described second switch element be in controllable silicon, photoelectrical coupler, relay and the transistor any;
When described first switch element was controllable silicon, described silicon controlled trigger end was connected on the connecting line between described the 3rd electric capacity and described first resistance;
When described second switch element was controllable silicon, described silicon controlled trigger end was connected on the connecting line between described the 4th electric capacity and described second resistance.
Preferable, described be used for to described led light source group provide the circuit of constant current or voltage be resistance, transistor any.
It is perhaps, described that to be used for providing the circuit of constant current or voltage to described led light source group be the LED power supply driver.
Preferable, when described when being used for providing the circuit of constant current or voltage to be the LED power supply driver to described led light source group, at the front end of described LED lamp group, the output of described first bridge rectifier also is parallel with the circuit of the 3rd resistance and the 3rd switch element series connection formation.
Preferable, described the 3rd switch element comprises in starter, controllable silicon, triode, relay, the Zener diode any.
Preferable, LED fluorescent lamp of the present invention, at the two ends of described LED lamp group, the output of described first bridge rectifier is parallel with first filter capacitor, and the output of described second bridge rectifier is parallel with second filter capacitor.
In addition, the embodiment of the invention also provides another kind of fluorescent lamps connected connection circuit, comprise the electric ballast in the fluorescent lamp circuit, also comprise in all LED fluorescent lamps that the embodiment of the invention provides any, the input of described electric ballast is connected the two ends that exchange input, two pins on first end cap of described fluorescent lamp is connected to two outputs of described electric ballast, and the two pins on second end cap of described fluorescent lamp is connected to two other output of described electric ballast.
In addition, the embodiment of the invention also provides another kind of fluorescent lamps connected connection circuit, comprise the electric ballast in the fluorescent lamp circuit, also comprise in all LED fluorescent lamps that the embodiment of the invention provides any, two inputs of described electric ballast are connected to the two ends that exchange input, two pins on first end cap of described fluorescent lamp is connected first output of described electron rectifier simultaneously, and the two pins on second end cap of described fluorescent lamp is connected second output of described electron rectifier at the same time.
Implement the embodiment of the invention, have following beneficial effect:
The LED fluorescent lamp that the embodiment of the invention provides is in parallel first inductance and second inductance between the pin of end cap, between a pin of the input of LED lamp group and described second end cap, be in series with the 3rd inductance, between a pin of the output of LED lamp group and described first end cap, be in series with the 4th inductance, when in the fluorescent lamp circuit of the LED fluorescent lamp prior art of the present invention that the embodiment of the invention provides, described first inductance, second inductance, after the 3rd inductance and the 4th inductance are adjusted the input characteristics of fluorescent lamp circuit, neither change the circuit structure of fluorescent lamp circuit in the time of can making the LED fluorescent lamp insert in the circuit of fluorescent lamp, the LED fluorescent lamp is normally lighted.In addition, for the input characteristics to fluorescent lamp circuit is better adjusted, the embodiment of the invention on the basis of series connection the 3rd inductance and the 4th inductance, also connected first electric capacity and second electric capacity.In addition, for the input characteristics to fluorescent lamp circuit is better adjusted, the embodiment of the invention on the basis of first inductance in parallel and second inductance, the circuit that forms by the 3rd electric capacity and the series connection of first resistance in parallel, and the circuit of connecting and forming in parallel by the 4th electric capacity and second resistance.In addition, for the input characteristics to fluorescent lamp circuit is better adjusted, the embodiment of the invention on the basis of first inductance in parallel and second inductance, also the output of described first inductance and with pin that described output links to each other between series connection the 5th electric capacity; The output of described second inductance and with pin that described output links to each other between series connection the 6th electric capacity.In addition, for the input characteristics to fluorescent lamp circuit is better adjusted, the circuit that the embodiment of the invention is formed by the 3rd electric capacity and the series connection of first resistance in parallel connection, and on the basis of the circuit that forms by the 4th electric capacity and the series connection of second resistance in parallel, the output of described first inductance and with pin that described output links to each other between connect one to make the described first inductance original state be first switch element of off-state; The output of described second inductance and with pin that described output links to each other between series connection one to make the described second inductance original state be the second switch element of off-state.In addition, for the input characteristics to fluorescent lamp circuit is better adjusted, the embodiment of the invention also is in series with the 7th electric capacity between described first inductance and described first switch element on the basis of series connection first switch element and second switch element; Between described second inductance and described second switch element, also be in series with the 8th electric capacity.In addition, to be used for providing the circuit of constant current or voltage to described led light source group be the LED power supply driver when described, when the peripheral circuit that inserts is the electron rectifier fluorescent lamp circuit, the output of described first bridge rectifier also is parallel with the circuit of the 3rd resistance and the 3rd switch element series connection formation, this circuit can produce feedback current to circuit input end on described the 3rd resistance, so that the input characteristics of the output characteristics of electron rectifier and LED fluorescent lamp is mated.Above-mentioned various LED fluorescent lamps are installed in the fluorescent lamps connected connection circuit of the embodiment of the invention, fluorescent lamps connected connection circuit is like this compared with existing fluorescent lamp circuit, circuit structure does not change, only be to have replaced traditional fluorescent lamp with the LED fluorescent lamp of the embodiment of the invention, can economize on resources greatly like this, user-friendly.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of existing a kind of electric ballast fluorescent lamp circuit;
Fig. 2 is the structural representation of existing another kind of electric ballast fluorescent lamp circuit;
Fig. 3 is the structural representation of existing Inductive ballast fluorescent lamp circuit;
Fig. 4 is existing a kind of LED fluorescent lamp peripheral circuit connected mode schematic diagram;
Fig. 5 is the internal circuit configuration schematic diagram of LED fluorescent lamp shown in Figure 4;
Fig. 6 is existing another kind of LED fluorescent lamp peripheral circuit connected mode schematic diagram;
Fig. 7 is the internal circuit configuration schematic diagram of LED fluorescent lamp shown in Figure 6;
Fig. 8 is existing another kind of LED fluorescent lamp peripheral circuit connected mode schematic diagram;
Fig. 9 is the internal circuit configuration schematic diagram of LED fluorescent lamp shown in Figure 8;
Figure 10 is the peripheral circuit connected mode schematic diagram of existing another kind of LED fluorescent lamp;
Figure 11 is the internal circuit configuration schematic diagram of first embodiment of LED fluorescent lamp of the present invention;
Figure 12 is the internal circuit configuration schematic diagram of second embodiment of LED fluorescent lamp of the present invention;
Figure 13 is the internal circuit configuration schematic diagram of the 3rd embodiment of LED fluorescent lamp of the present invention;
Figure 14 is the internal circuit configuration schematic diagram of the 4th embodiment of LED fluorescent lamp of the present invention;
Figure 15 is the internal circuit configuration schematic diagram of the 5th embodiment of LED fluorescent lamp of the present invention;
Figure 16 is the internal circuit configuration schematic diagram of the 6th embodiment of LED fluorescent lamp of the present invention;
Figure 17 is the internal circuit configuration schematic diagram of the 7th embodiment of LED fluorescent lamp of the present invention;
Figure 18 is the internal circuit configuration schematic diagram of the 8th embodiment of LED fluorescent lamp of the present invention;
Figure 19 is the internal circuit configuration schematic diagram of the 9th embodiment of LED fluorescent lamp of the present invention;
Figure 20 is the internal circuit configuration schematic diagram of the tenth embodiment of LED fluorescent lamp of the present invention;
Figure 21 is the internal circuit configuration schematic diagram of the 11 embodiment of LED fluorescent lamp of the present invention;
Figure 22 is the internal circuit configuration schematic diagram of the 12 embodiment of LED fluorescent lamp of the present invention;
Figure 23 is that LED daylight lamp circuit shown in Figure 13 is connected to the electrical block diagram in the Inductive ballast fluorescent lamp peripheral circuit shown in Figure 1;
Figure 24 is that LED daylight lamp circuit shown in Figure 13 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit shown in Figure 2;
Figure 25 is that LED daylight lamp circuit shown in Figure 13 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit shown in Figure 3;
Figure 26 is that LED daylight lamp circuit shown in Figure 16 is connected to the electrical block diagram in the Inductive ballast fluorescent lamp peripheral circuit shown in Figure 1;
Figure 27 is that LED daylight lamp circuit shown in Figure 16 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit shown in Figure 2;
Figure 28 is that LED daylight lamp circuit shown in Figure 16 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit shown in Figure 3;
Figure 29 is the internal circuit configuration schematic diagram of the 13 embodiment of LED fluorescent lamp of the present invention;
Figure 30 is the internal circuit configuration schematic diagram of the 14 embodiment of LED fluorescent lamp of the present invention;
Figure 31 is the internal circuit configuration schematic diagram of the 15 embodiment of LED fluorescent lamp of the present invention;
Figure 32 is the internal circuit configuration schematic diagram of the 16 embodiment of LED fluorescent lamp of the present invention;
Figure 33 is that LED daylight lamp circuit shown in Figure 30 is connected to the electrical block diagram in the Inductive ballast fluorescent lamp peripheral circuit shown in Figure 1;
Figure 34 is that LED daylight lamp circuit shown in Figure 30 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit shown in Figure 2;
Figure 35 is that LED daylight lamp circuit shown in Figure 30 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit shown in Figure 3;
Figure 36 is that LED daylight lamp circuit shown in Figure 32 is connected to the electrical block diagram in the Inductive ballast fluorescent lamp peripheral circuit shown in Figure 1;
Figure 37 is that LED daylight lamp circuit shown in Figure 32 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit shown in Figure 2;
Figure 38 is that LED daylight lamp circuit shown in Figure 32 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit shown in Figure 3.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described.
A kind of LED fluorescent lamp provided by the invention, comprise the LED fluorescent tube, described LED fluorescent tube comprises first end cap and second end cap, described first end cap and described second end cap comprise two pins respectively, in described LED fluorescent tube inside, between two pins of described first end cap, be parallel with first inductance and first bridge rectifier, between two pins of described second end cap, be parallel with second inductance and second bridge rectifier, the output parallel connection LED lamp group of described first bridge rectifier and described second bridge rectifier, described LED lamp group comprises the led light source group and is used for providing the circuit of constant current or constant voltage to described led light source group, between a pin of the input of described LED lamp group and described second end cap, be in series with the 3rd inductance, between a pin of the output of described LED lamp group and described first end cap, be in series with the 4th inductance.Provide the circuit of constant current or voltage to can be in resistance, transistor and the LED power supply driver any described in the specific implementation.In the specific implementation, when the circuit that constant current or voltage are provided adopts in resistance, the transistor any, the internal circuit configuration of this LED fluorescent lamp can be as shown in figure 11, and when the circuit that constant current or voltage are provided adopted power supply driver, the LED fluorescent lamp internal circuit configuration of present embodiment can be as Figure 15 and shown in Figure 16.
As shown in figure 11, the internal circuit of LED fluorescent lamp of the present invention can comprise pin 1, pin 2, pin 3 and pin 4, in the specific implementation, described pin 1 and pin 2 can be positioned on first end cap of LED fluorescent lamp, and described pin 3 and pin 4 can be positioned on second end cap of LED fluorescent lamp.The shunt inductance L1 and first bridge rectifier formed by Q1-Q4 between pin 1 and pin 2, between the both positive and negative polarity of the output of first bridge rectifier of forming by Q1-Q4, connect a filter capacitor C1 (in the specific implementation, can not comprise filter capacitor C1), second bridge rectifier that between pin 3 and pin 4, is parallel with inductance L 2 and forms by Q5-Q8, between the both positive and negative polarity of the output of second bridge rectifier of forming by Q5-Q8, connect a filter capacitor C2 (in the specific implementation, can not comprise filter capacitor C2), as shown in Figure 11, bridge rectifier between pin 1 and the pin 2, bridge rectifier between filter capacitor and pin 3 and the pin 4, filter capacitor is symmetrical structure, be connected at the two ends of described filter capacitor C1 and filter capacitor C2 by the circuit T1 that constant current or voltage are provided and led light source group (D1 wherein, D2, D3.....Dn is the LED lamp) the LED lamp group formed, further, series inductance L3 between input that draws described LED lamp group and pin 3, series inductance L4 between the output of described LED lamp group and pin 2.Provide the circuit T1 of constant current or voltage to can be in resistance, the transistor any in the specific implementation.
When the LED daylight lamp circuit among Figure 11 being connected in the electric ballast fluorescent lamp peripheral circuit shown in Figure 1, the pin 1 of LED fluorescent lamp and pin 2 are connected respectively to two outputs of electric ballast, pin 3, pin 4 is connected respectively to other two outputs of electric ballast, the input of electric ballast is connected to and exchanges the AC input, in the specific implementation, when exchanging AC input incoming transport electricity, according to the course of work of electric ballast as can be known, it at first needs to provide a preheat curent to filament, start high pressure then and trigger the conducting of LDE lamp, and in the present embodiment, inductance L 1, inductance L 2, inductance L 3 and inductance L 4 will influence the output characteristics of electric ballast, high frequency voltage to electric ballast output is regulated, so that input pin 1, pin 2, circuit parameter between pin 3 and the pin 4 mates fully with the parameter of lighting the LED fluorescent lamp, when not changing primary electron ballast fluorescent lamp circuit, normally the LED lamp is lighted to be implemented in.
When the LED daylight lamp circuit among Figure 11 being connected in the electric ballast fluorescent lamp peripheral circuit shown in Figure 2, the pin 1 of LED fluorescent lamp and pin 2 are connected to an output of electric ballast simultaneously, pin 3, pin 4 is connected to another output of electric ballast simultaneously, the input of electric ballast is connected to and exchanges the AC input, in the specific implementation, when exchanging AC input incoming transport electricity, according to the course of work of electric ballast as can be known, it at first needs to provide a preheat curent to filament, start high pressure then and trigger the conducting of LDE lamp, and in the present embodiment, inductance L 1, inductance L 2, inductance L 3 and inductance L 4 will influence the output characteristics of electric ballast, high frequency voltage to electric ballast output is regulated, so that input pin 1, pin 2, circuit parameter between pin 3 and the pin 4 mates fully with the parameter of lighting the LED fluorescent lamp, when not changing primary electron ballast fluorescent lamp circuit, normally the LED lamp is lighted to be implemented in.
As shown in figure 15, it replaces T1 shown in Figure 11 with the LED power supply driver.When adopting daylight lamp circuit shown in Figure 15, its mode that inserts electric ballast fluorescent lamp circuit illustrated in figures 1 and 2 is identical with Figure 11, does not give unnecessary details at this.
In addition, shown in Figure 16 (having removed capacitor C 9 and capacitor C 10 among Figure 15), can also on the basis of daylight lamp circuit shown in Figure 15, increase the series circuit that forms by resistance R x and starter S1.As Figure 16, at the front end of described LED lamp group, the output of described bridge rectifier also is parallel with the circuit of resistance R x and starter S1 series connection formation.After adopting daylight lamp circuit access shown in Figure 16 electric ballast fluorescent lamp circuit illustrated in figures 1 and 2, the output of electron rectifier is through behind the bridge rectifier, can between the both positive and negative polarity that the direct current of bridge rectifier is exported, produce a high voltage, at this moment, the conducting that is triggered of starter S1 moment, be short-circuited, having electric current on resistance R x flows through, this electric current can feed back to the input of electric ballast, make electron rectifier change output characteristics, thus the input characteristics of coupling LED fluorescent lamp.In the specific implementation, the element of connecting with resistance R x is not limited to starter, also can be switch elements such as controllable silicon, triode, relay, Zener diode, as long as these switch elements can satisfy in LED daylight lamp circuit electric ballast fluorescent lamp circuit, between the both positive and negative polarity of the output of bridge rectifier, can produce certain voltage, after this voltage can make these switch elements moments be switched on, produce current flowing resistance Rx and get final product.
Another kind of LED fluorescent lamp provided by the invention, comprise the LED fluorescent tube, described LED fluorescent tube comprises first end cap and second end cap, described first end cap and described second end cap comprise two pins respectively, in described LED fluorescent tube inside, between two pins of described first end cap, be parallel with first inductance, first bridge rectifier and first filter capacitor, between two pins of described second end cap, be parallel with second inductance, second bridge rectifier and second filter capacitor, the output parallel connection LED lamp group of described first bridge rectifier and described second bridge rectifier, described LED lamp group comprises the led light source group and is used for providing the circuit of constant current or constant voltage to described led light source group, between a pin of the input of described LED lamp group and described second end cap, be in series with the 3rd inductance and first electric capacity, between a pin of the output of described LED lamp group and described first end cap, be in series with the 4th inductance and second electric capacity.In the specific implementation, can not comprise described first filter capacitor and described second filter capacitor.Provide the circuit of constant current or voltage to can be in resistance, transistor and the LED power supply driver any in the specific implementation.In the specific implementation, when the circuit that constant current or voltage are provided adopts in resistance, the transistor any, the internal circuit configuration of the LED fluorescent lamp of present embodiment can be as shown in figure 12, and when the circuit that constant current or voltage are provided adopted power supply driver, the LED fluorescent lamp internal circuit configuration of present embodiment can be as Figure 17 and shown in Figure 180.
As shown in figure 12, LED daylight lamp circuit of the present invention can be on the basis of circuit shown in Figure 11, series capacitance C1 between inductance L 3 and pin 3, series capacitance C2 between the output of inductance L 4 and LED lamp group.The function that circuit shown in Figure 12 and circuit shown in Figure 11 are realized is basic identical, and it can directly be linked into traditional Inductive ballast fluorescent lamp circuit shown in Figure 3 or directly insert in the conventional electronic ballast fluorescent lamp circuit illustrated in figures 1 and 2.After effective cooperation of present embodiment by inductance L 1, inductance L 2, inductance L 3, inductance L 4, capacitor C 1, capacitor C 2, the Inductive ballast in the conventional fluorescent circuit for lamp or the output characteristics of electric ballast and the input characteristics of LED fluorescent lamp are mated more, improve the illumination effect of LED fluorescent lamp, strengthen the stability of entire circuit.
In the specific implementation, daylight lamp circuit access Fig. 2 shown in Figure 12 is identical with Figure 11 with the mode of electric ballast fluorescent lamp circuit shown in Figure 3, does not give unnecessary details at this.
When daylight lamp circuit shown in Figure 12 is inserted Inductive ballast fluorescent lamp circuit shown in Figure 3, the pin 1 of LED daylight lamp circuit is connected to Inductive ballast L in the fluorescent lamp peripheral circuit and exchanges the AC input, the pin 3 of LED daylight lamp circuit is connected the output of described Inductive ballast, the pin 2 of LED daylight lamp circuit and pin 4 are connected on the starter base Y in the fluorescent lamp peripheral circuit, in the time of when be connected to inductance rectifier fluorescent lamp peripheral circuit shown in Figure 1 with LED daylight lamp circuit shown in Figure 12 in, preferable mode is on the described starter base Y starter not to be installed.When receiving in the fluorescent lamp peripheral circuit, can not change the circuit structure of former fluorescent lamp peripheral circuit with LED shown in Figure 12 is fluorescent lamps connected.
Concrete, when LED daylight lamp circuit shown in Figure 12 being connected in the Inductive ballast fluorescent lamp peripheral circuit shown in Figure 3, civil power is after the input of interchange AC input, one tunnel pin 3 through Inductive ballast L arrival LED fluorescent lamp, another road is directly inputted to the pin 1 of LED fluorescent lamp, under the effect of Inductive ballast fluorescent lamp circuit civil power low frequency (being generally 50-60HZ), inductance L 1, inductance L 2, the induction reactance of inductance L 3 and inductance L 4 is very little, pin 1, pin 2, pin 3 and pin 4 can be thought short-circuit condition respectively, the capacitive reactance of capacitor C 1 and capacitor C 2 is very big, can think that its place branch road is open circuit.Therefore, after two groups of bridge rectifiers of the alternating current of input through the Q1-Q8 composition, alternating current is converted to Rectified alternating current, the positive pole of described Rectified alternating current is last, negative pole after the filtering of Rectified alternating current through filtering capacitor C 1 and filter capacitor C2, changes comparatively level and smooth dc high-voltage down into, this dc high-voltage is flowed through LED lamp D1, LED lamp D2.......LED lamp Dn to ground through T1, and the LED lamp is lighted.Simultaneously, directly arrive starter base Y through live wire, zero line after inductance L 1 and inductance L 2 short circuits.Owing to the starter on the starter base Y is taken down in the present embodiment, so the LED lamp voltage that do not have a lamp tube ends is higher than the starting voltage of starter, makes the LED lamp produce the defective of flicker.
As shown in figure 17, it replaces T1 shown in Figure 12 with the LED power supply driver.When adopting daylight lamp circuit shown in Figure 17, the mode of the mode of the Inductive ballast fluorescent lamp circuit that its access is shown in Figure 3 and electric ballast fluorescent lamp circuit illustrated in figures 1 and 2 is identical with above-mentioned each circuit mode of circuit shown in Figure 12 access, does not give unnecessary details at this.
In addition, shown in Figure 18 (having removed capacitor C 9 and capacitor C 10 among Figure 17), can also on the basis of daylight lamp circuit shown in Figure 17, increase the series circuit that forms by resistance R x and starter S1.The effect of Rx among Figure 18 and starter S1 with and alternative elements and Figure 16 similar, do not give unnecessary details at this.
Another kind of LED fluorescent lamp provided by the invention, comprise the LED fluorescent tube, described LED fluorescent tube comprises first end cap and second end cap, described first end cap and described second end cap comprise two pins respectively, in described LED fluorescent tube inside, between two pins of described first end cap, be parallel with first inductance successively, the circuit and first bridge rectifier that form by the series connection of the 3rd electric capacity and first resistance, between two pins of described second end cap, be parallel with second inductance successively, the circuit and second bridge rectifier that form by the series connection of second electric capacity and second resistance, the output parallel connection LED lamp group of described first bridge rectifier and described second bridge rectifier, described LED lamp group comprises the led light source group and is used for providing the circuit of constant current or constant voltage to described led light source group, between a pin of the input of described LED lamp group and described second end cap, be in series with the 3rd inductance and first electric capacity, between a pin of the output of described LED lamp group and described first end cap, be in series with the 4th inductance and second electric capacity.Provide the circuit of constant current or voltage to can be in resistance, transistor and the LED power supply driver any in the specific implementation.In the specific implementation, when the circuit that constant current or voltage are provided adopts in resistance, the transistor any, the internal circuit configuration of this LED fluorescent lamp can be as shown in figure 13, and when the circuit that constant current or voltage are provided adopted power supply driver, this LED fluorescent lamp internal circuit configuration can be as Figure 19 and shown in Figure 20.In the specific implementation, can not comprise first filter capacitor and second filter capacitor.
As shown in figure 13, LED daylight lamp circuit of the present invention can be on the basis of circuit shown in Figure 12, the circuit that forms by capacitor C 3 and resistance R 3 series connection in parallel between pin 1 and pin 2, the circuit that forms by capacitor C 4 and resistance R 4 series connection in parallel between pin 3 and pin 4.The function that circuit shown in Figure 13 and circuit shown in Figure 12 are realized is basic identical, and it still can directly be linked in traditional Inductive ballast fluorescent lamp circuit shown in Figure 3 or Fig. 1 and Fig. 2 conventional electronic ballast fluorescent lamp circuit.After effective cooperation of present embodiment by inductance L 1, capacitor C 3, resistance R 3, inductance L 2, capacitor C 4, inductance L 3, inductance L 4 and resistance R 4, the Inductive ballast in the conventional fluorescent circuit for lamp or the output characteristics of electric ballast and the input characteristics of LED fluorescent lamp are mated more, improve the illumination effect of LED fluorescent lamp, strengthen the stability of entire circuit.
In the specific implementation, the mode of the mode of the Inductive ballast fluorescent lamp circuit that daylight lamp circuit access shown in Figure 13 is shown in Figure 3 and electric ballast fluorescent lamp circuit illustrated in figures 1 and 2 is identical with above-mentioned each circuit mode of circuit access shown in Figure 12, specifically referring to Figure 23, Figure 24 and Figure 25.
As shown in figure 19, it replaces T1 shown in Figure 13 with the LED power supply driver.When adopting daylight lamp circuit shown in Figure 19, the mode of the mode of the Inductive ballast fluorescent lamp circuit that its access is shown in Figure 3 and electric ballast fluorescent lamp circuit illustrated in figures 1 and 2 is identical with above-mentioned each circuit mode of circuit shown in Figure 12 access, specifically referring to Figure 26, Figure 27 and shown in Figure 28.
In addition, shown in Figure 20 (having removed capacitor C 9 and capacitor C 10 among Figure 19), can also on the basis of daylight lamp circuit shown in Figure 19, increase the series circuit that forms by resistance R x and starter S1.The effect of Rx among Figure 20 and starter S1 with and alternative elements and Figure 16 similar, do not give unnecessary details at this.
Another kind of LED fluorescent lamp provided by the invention, comprise the LED fluorescent tube, described LED fluorescent tube comprises first end cap and second end cap, described first end cap and described second end cap comprise two pins respectively, in described LED fluorescent tube inside, between two pins of described first end cap, be parallel with the circuit that first inductance and the 5th capacitances in series form, first bridge rectifier and first filter capacitor, between two pins of described second end cap, be parallel with the circuit that second inductance and the 6th capacitances in series form, second rectification circuit and second filter capacitor, the output parallel connection LED lamp group of described first bridge rectifier and described second bridge rectifier, described LED lamp group comprises the led light source group and is used for providing the circuit of constant current or constant voltage to described led light source group, between a pin of the input of described LED lamp group and described second end cap, be in series with the 3rd inductance and first electric capacity, between a pin of the output of described LED lamp group and described first end cap, be in series with the 4th inductance and second electric capacity.Provide the circuit of constant current or voltage to can be in resistance, transistor and the LED power supply driver any in the specific implementation.In the specific implementation, when the circuit that constant current or voltage are provided adopts in resistance, the transistor any, the internal circuit configuration of this LED fluorescent lamp can be as shown in figure 14, and when the circuit that constant current or voltage are provided adopted power supply driver, this LED fluorescent lamp internal circuit configuration can be as Figure 21 and shown in Figure 22.In the specific implementation, can not comprise described first filter capacitor and described second filter capacitor.
As shown in figure 14, LED daylight lamp circuit of the present invention can be on the basis of circuit shown in Figure 12, the capacitor C 5 of connecting between inductance L 1 and pin 2, the capacitor C 6 of connecting between inductance L 2 and pin 4.The function that present embodiment and LED fluorescent lamp embodiment illustrated in fig. 12 are realized is basic identical, and it still can directly be linked in traditional Inductive ballast fluorescent lamp circuit shown in Figure 3 or the conventional electronic ballast fluorescent lamp circuit illustrated in figures 1 and 2.After effective cooperation of present embodiment by inductance L 1, capacitor C 5, inductance L 2, capacitor C 6, inductance L 3, inductance L 4, capacitor C 1 and capacitor C 2, the Inductive ballast in the conventional fluorescent circuit for lamp or the output characteristics of electric ballast and the input characteristics of LED fluorescent lamp are mated more, improve the illumination effect of LED fluorescent lamp, strengthen the stability of entire circuit.
In the specific implementation, the mode of the mode of the Inductive ballast fluorescent lamp circuit that daylight lamp circuit access shown in Figure 14 is shown in Figure 3 and electric ballast fluorescent lamp circuit illustrated in figures 1 and 2 is identical with above-mentioned each circuit mode of circuit access shown in Figure 12, does not give unnecessary details at this.
As shown in figure 21, it replaces T1 shown in Figure 14 with the LED power supply driver.When adopting daylight lamp circuit shown in Figure 21, the mode of the mode of the Inductive ballast fluorescent lamp circuit that its access is shown in Figure 3 and electric ballast fluorescent lamp circuit illustrated in figures 1 and 2 is identical with above-mentioned each circuit mode of circuit shown in Figure 12 access, does not give unnecessary details at this.
In addition, shown in Figure 22 (having removed capacitor C 9 and capacitor C 10 among Figure 21), can also on the basis of daylight lamp circuit shown in Figure 21, increase the series circuit that forms by resistance R x and starter S1.The effect of Rx among Figure 22 and starter S1 with and alternative elements and Figure 16 similar, do not give unnecessary details at this.
Another kind of LED fluorescent lamp provided by the invention, comprise the LED fluorescent tube, described LED fluorescent tube comprises first end cap and second end cap, described first end cap and described second end cap comprise two pins respectively, in described LED fluorescent tube inside, between two pins of described first end cap, be parallel with the circuit that the series connection of first inductance and first switch element forms, the circuit and first bridge rectifier that the 3rd electric capacity and the series connection of first resistance form, between two pins of described second end cap, be parallel with the circuit that the series connection of second inductance and second switch element forms, the circuit and second bridge rectifier that the 4th electric capacity and the series connection of second resistance form, the output parallel connection LED lamp group of described first bridge rectifier and described second bridge rectifier, described LED lamp group comprises the led light source group and is used for providing the circuit of constant current or constant voltage to described led light source group, between a pin of the input of described LED lamp group and described second end cap, be in series with the 3rd inductance and first electric capacity, between a pin of the output of described LED lamp group and described first end cap, be in series with the 4th inductance and second electric capacity.In the specific implementation, described first switch element and described second switch element can be in controllable silicon, photoelectrical coupler, relay and the transistor any.When described first switch element and/or described second switch element are controllable silicon, described silicon controlled trigger end as first switch element is connected on the connecting line between described first electric capacity and described first resistance, and described silicon controlled trigger end as the second switch element is connected on the connecting line between described second electric capacity and described second resistance.In the specific implementation, when providing the circuit of constant current or voltage to adopt in resistance, the transistor any, the internal circuit configuration of this LED fluorescent lamp can be as shown in figure 29, and when the circuit that constant current or voltage are provided adopted power supply driver, this LED fluorescent lamp internal circuit configuration can be as shown in figure 31.
As shown in figure 29, LED daylight lamp circuit of the present invention can be on the basis of circuit shown in Figure 13, between inductance L 1 and pin 2, be connected in series a controllable silicon T2, the trigger end G of described controllable silicon T2 is connected between capacitor C 3 and the resistance R 3, be connected in series a controllable silicon T3 between inductance L 2 and pin 4, the trigger end G of described silicon controlled T3 is connected between capacitor C 4 and the resistance R 4.The function that present embodiment and LED fluorescent lamp embodiment illustrated in fig. 12 are realized is basic identical, it still can directly be linked in traditional Inductive ballast fluorescent lamp circuit shown in Figure 3 or the conventional electronic ballast fluorescent lamp circuit illustrated in figures 1 and 2, and when the LED fluorescent lamp that adopts present embodiment inserted the Inductive ballast fluorescent lamp circuit, the starter on the described Inductive ballast fluorescent lamp circuit can keep.After effective cooperation of present embodiment by capacitor C 1, capacitor C 2, inductance L 1, capacitor C 3, resistance R 3, inductance L 2, capacitor C 4, resistance R 4, controllable silicon T2, controllable silicon T3, inductance L 3, inductance L 4, the Inductive ballast in the conventional fluorescent circuit for lamp or the output characteristics of electric ballast and the input characteristics of LED fluorescent lamp are mated more, improve the illumination effect of LED fluorescent lamp, strengthen the stability of entire circuit.
When the LED daylight lamp circuit among Figure 29 being connected in the electric ballast fluorescent lamp peripheral circuit shown in Figure 1, the pin 1 of LED fluorescent lamp and pin 2 are connected respectively to two outputs of electric ballast, and pin 3 and pin 4 are connected respectively to other two outputs of electric ballast.Present embodiment can pass through the capacity of appropriate design capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4 and the resistance of appropriate design resistance R 3 and resistance R 4, make it under the situation that receives the high-frequency alternating current input, controllable silicon T2 and controllable silicon T3 are become conducting state by off-state.
When the LED daylight lamp circuit among Figure 29 being connected in the electric ballast fluorescent lamp peripheral circuit shown in Figure 2, an output, pin 3, the pin 4 that the pin 1 of LED fluorescent lamp and pin 2 are connected to electric ballast simultaneously is connected to another output of electric ballast simultaneously, and the input of electric ballast is connected to and exchanges the AC input.Present embodiment can pass through the capacity of appropriate design capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4 and the resistance of appropriate design resistance R 3 and resistance R 4, make it under the situation that receives the high-frequency alternating current input, controllable silicon T2 and controllable silicon T3 are become conducting state by off-state.
When being connected to LED daylight lamp circuit shown in Figure 29 in the Inductive ballast fluorescent lamp peripheral circuit shown in Figure 3, the pin 1 of LED daylight lamp circuit is connected to Inductive ballast L in the fluorescent lamp peripheral circuit and exchanges the AC input, the pin 3 of LED daylight lamp circuit is connected the output of described Inductive ballast, the pin 2 of LED daylight lamp circuit and pin 4 are connected on the starter base Y in the fluorescent lamp peripheral circuit, and on the described starter base Y starter S can be installed.When receiving in the fluorescent lamp peripheral circuit, can not change the circuit structure of former fluorescent lamp peripheral circuit with LED shown in Figure 24 is fluorescent lamps connected.
Concrete, when LED daylight lamp circuit shown in Figure 29 being connected in the Inductive ballast fluorescent lamp peripheral circuit shown in Figure 3, after inserting civil power, civil power one tunnel arrives the pin 3 of LED fluorescent lamp through Inductive ballast L, another road is directly inputted to the pin 1 of LED fluorescent lamp, capacitor C 3 and capacitor C 4 can produce very big capacitive reactance (in the specific implementation to low frequency (50-60HZ) civil power in the present embodiment, can realize by the capacitance of adjusting capacitor C 3 and capacitor C 4), the voltage drop that produces on resistance R 3 and resistance R 4 is very little like this, is not enough to trigger controllable silicon T2 and controllable silicon T3 conducting.Therefore, in the present embodiment, the live wire of civil power and zero line can not arrive the two ends of starter S by pin 2 and pin 4, therefore, also can not impact the luminous of circuit even present embodiment keeps starter S.Meanwhile, the series loop that capacitor C 3, resistance R 3 form in the present embodiment, and the series loop that forms of capacitor C 4, resistance R 4 can adjust its electric current of flowing through, and such adjustment can prevent that also the LED fluorescent lamp from avoiding being subjected to starter to influence and produce flicker.
As shown in figure 31, it replaces T1 shown in Figure 29 with the LED power supply driver.When adopting daylight lamp circuit shown in Figure 31, the mode of the mode of the Inductive ballast fluorescent lamp circuit that its access is shown in Figure 3 and electric ballast fluorescent lamp circuit illustrated in figures 1 and 2 is identical with Figure 29, does not give unnecessary details at this.Another kind of LED fluorescent lamp provided by the invention, comprise the LED fluorescent tube, described LED fluorescent tube comprises first end cap and second end cap, described first end cap and described second end cap comprise two pins respectively, in described LED fluorescent tube inside, between two pins of described first end cap, be parallel with the circuit that first inductance and the 7th electric capacity and the first switch element three connect and form, the circuit and first bridge rectifier that the 3rd electric capacity and first resistance are connected and formed, between two pins of described second end cap, be parallel with the circuit that second inductance and the 8th electric capacity and second switch element three are connected and formed, the circuit and second bridge rectifier that the 4th electric capacity and second resistance are connected and formed, the output parallel connection LED lamp group of described first bridge rectifier and described second bridge rectifier, described LED lamp group comprises the led light source group and is used for providing the circuit of constant current or constant voltage to described led light source group, between a pin of the input of described LED lamp group and described second end cap, be in series with the 3rd inductance and first electric capacity, between a pin of the output of described LED lamp group and described first end cap, be in series with the 4th inductance and second electric capacity.In the specific implementation, described first switch element and described second switch element can be in controllable silicon, photoelectrical coupler, relay and the transistor any.When described first switch element and/or described second switch element are controllable silicon, described silicon controlled trigger end as first switch element is connected on the connecting line between described the 3rd electric capacity and described the 3rd resistance, and described silicon controlled trigger end as the second switch element is connected on the connecting line between described the 4th electric capacity and described the 4th resistance.In the specific implementation, when the circuit that constant current or voltage are provided adopts in resistance, the transistor any, the internal circuit configuration of this LED fluorescent lamp can be as shown in figure 30, and when the circuit that constant current or voltage are provided adopted power supply driver, this LED fluorescent lamp internal circuit configuration can be shown in figure 32.
As Figure 30, LED daylight lamp circuit of the present invention can be on the basis of circuit shown in Figure 29, series connection one capacitor C 7 between inductance L 1 and controllable silicon T2, series connection one capacitor C 8 between inductance L 2 and controllable silicon T3.The effect of capacitor C 7 and capacitor C 8 also is a coupling of further improving the input characteristics of the output characteristics of Inductive ballast or electric ballast and LED fluorescent lamp.The function that present embodiment and LED fluorescent lamp embodiment illustrated in fig. 12 are realized is basic identical, it still can directly be linked in traditional Inductive ballast fluorescent lamp circuit shown in Figure 3 or the conventional electronic ballast fluorescent lamp circuit illustrated in figures 1 and 2, and when the LED fluorescent lamp that adopts present embodiment inserted the Inductive ballast fluorescent lamp circuit, the starter on the described Inductive ballast fluorescent lamp circuit can keep.
In the specific implementation, the mode of the mode of the Inductive ballast fluorescent lamp circuit that daylight lamp circuit access shown in Figure 30 is shown in Figure 3 and electric ballast fluorescent lamp circuit illustrated in figures 1 and 2 is identical with Figure 29, specifically referring to Figure 33, Figure 34 and Figure 35.
Shown in figure 32, it replaces T1 shown in Figure 30 with the LED power supply driver.When adopting daylight lamp circuit shown in Figure 32, the mode of the mode of the Inductive ballast fluorescent lamp circuit that its access is shown in Figure 3 and electric ballast fluorescent lamp circuit illustrated in figures 1 and 2 is identical with Figure 30, specifically referring to Figure 36, Figure 37 and Figure 38.
Above disclosed is preferred embodiment of the present invention only, can not limit the present invention's interest field certainly with this, and therefore the equivalent variations of doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (13)
1. LED fluorescent lamp, it is characterized in that, comprise the LED fluorescent tube, described LED fluorescent tube comprises first end cap and second end cap, described first end cap and described second end cap comprise two pins respectively, in described LED fluorescent tube inside, between two pins of described first end cap, be parallel with first inductance and first bridge rectifier, between two pins of described second end cap, be parallel with second inductance and second bridge rectifier, the output parallel connection LED lamp group of described first bridge rectifier and described second bridge rectifier, described LED lamp group comprises the led light source group and is used for providing the circuit of constant current or constant voltage to described led light source group, between a pin of the input of described LED lamp group and described second end cap, be in series with the 3rd inductance, between a pin of the output of described LED lamp group and described first end cap, be in series with the 4th inductance.
2. LED fluorescent lamp as claimed in claim 1 is characterized in that,
The output of described the 3rd inductance and with pin that described output links to each other between series connection first electric capacity;
The output of described the 4th inductance and with pin that described output links to each other between series connection second electric capacity.
3. LED fluorescent lamp as claimed in claim 1 or 2 is characterized in that,
After described first inductance, before described first bridge rectifier, also be parallel with the circuit that forms by the 3rd electric capacity and the series connection of first resistance between two pins of described first end cap;
After described second inductance, before described second bridge rectifier, also be parallel with the circuit that forms by the 4th electric capacity and the series connection of second resistance between two pins of described second end cap.
4. LED fluorescent lamp as claimed in claim 1 or 2 is characterized in that,
The output of described first inductance and with pin that described output links to each other between series connection the 5th electric capacity;
The output of described second inductance and with pin that described output links to each other between series connection the 6th electric capacity.
5. LED fluorescent lamp as claimed in claim 3 is characterized in that,
The output of described first inductance and with pin that described output links to each other between series connection one to make the described first inductance original state be first switch element of off-state;
The output of described second inductance and with pin that described output links to each other between series connection one to make the described second inductance original state be the second switch element of off-state.
6. LED fluorescent lamp as claimed in claim 5 is characterized in that,
Between described first inductance and described first switch element, also be in series with the 7th electric capacity;
Between described second inductance and described second switch element, also be in series with the 8th electric capacity.
7. LED fluorescent lamp as claimed in claim 5 is characterized in that,
Described first switch element and described second switch element be in controllable silicon, photoelectrical coupler, relay and the transistor any;
When described first switch element was controllable silicon, described silicon controlled trigger end was connected on the connecting line between described the 3rd electric capacity and described first resistance;
When described second switch element was controllable silicon, described silicon controlled trigger end was connected on the connecting line between described the 4th electric capacity and described second resistance.
8. LED fluorescent lamp as claimed in claim 1 or 2 is characterized in that, described be used for to described led light source group provide the circuit of constant current or voltage be resistance, transistor, LED power supply driver any.
9. LED fluorescent lamp as claimed in claim 8, it is characterized in that, when described when being used for providing the circuit of constant current or voltage to be the LED power supply driver to described led light source group, before described LED lamp group, the output of described first bridge rectifier also is parallel with the circuit of the 3rd resistance and the 3rd switch element series connection formation.
10. LED fluorescent lamp as claimed in claim 10 is characterized in that, described the 3rd switch element comprises in starter, controllable silicon, triode, relay, the Zener diode any.
11. LED fluorescent lamp as claimed in claim 1 or 2 is characterized in that, at the two ends of described LED lamp group, the output of described first bridge rectifier is parallel with first filter capacitor, and the output of described second bridge rectifier is parallel with second filter capacitor.
12. fluorescent lamps connected connection circuit, comprise the electric ballast in the fluorescent lamp circuit, it is characterized in that, also comprise as each described LED fluorescent lamp among the claim 1-11, the input of described electric ballast is connected the two ends that exchange input, two pins on first end cap of described fluorescent lamp is connected to two outputs of described electric ballast, and the two pins on second end cap of described fluorescent lamp is connected to two other output of described electric ballast.
13. fluorescent lamps connected connection circuit, comprise the electric ballast in the fluorescent lamp circuit, it is characterized in that, also comprise as each described LED fluorescent lamp among the claim 1-11, two inputs of described electric ballast are connected to the two ends that exchange input, two pins on first end cap of described fluorescent lamp is connected first output of described electron rectifier simultaneously, and the two pins on second end cap of described fluorescent lamp is connected second output of described electron rectifier at the same time.
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Application publication date: 20110817 |