CN102155649B

CN102155649B - Light-emitting diode (LED) fluorescent lamp and connecting circuit thereof

Info

Publication number: CN102155649B
Application number: CN2010105792475A
Authority: CN
Inventors: 刘昌贵
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-07
Filing date: 2010-12-07
Publication date: 2013-02-27
Anticipated expiration: 2030-12-07
Also published as: CN102155649A

Abstract

The embodiment of the invention discloses a light-emitting diode (LED) fluorescent lamp and a connecting circuit thereof. The LED fluorescent lamp comprises an LED fluorescent tube; the LED fluorescent tube comprises a first end cap and a second end cap, which comprise two pins respectively; a first inductor and a first bridge rectifier circuit are parallelly connected between the two pins of the first end cap; a second inductor and a second bridge rectifier circuit are parallelly connected between the two pins of the second end cap; a first inductor is serially connected between one pin of the first end cap and one pin of the second end cap; a second inductor is serially connected between the other pin of the first end cap and the other pin of the second end cap; the output end of the first bridge rectifier circuit and the output end of the bridge rectifier circuit are parallelly connected with an LED lamp group which comprises an LED light source group and a circuit for supplying constant current and constant voltage. By the invention, the LED fluorescent lamp can be used for directly replacing a fluorescent lamp under the condition of no change of a peripheral circuit of the conventional fluorescent lamp.

Description

A kind of LED fluorescent lamp and fluorescent lamp connecting circuit

Technical field

The present invention relates to the LED field, relate in particular to LED fluorescent lamp and fluorescent lamp connecting 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.Such 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, the common fluorescent lamp circuit of the first 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 inputted simultaneously from an end of Inductive ballast and an end of fluorescent lamp.As shown in Figure 2, the common fluorescent lamp circuit of the second is replaced Inductive ballast in the first kind of way with electric ballast, civil power is exported to respectively four pins of fluorescent lamp circuit through four outputs of electric ballast after the input input of electric ballast.As shown in Figure 3, the third common fluorescent lamp circuit is also with the Inductive ballast in the electric ballast replacement first kind of way, itself and circuit difference shown in Figure 2 are, electric current through electric ballast sends to two pins of fluorescent lamp simultaneously by an output of electric ballast, and sends to simultaneously two other pin of fluorescent lamp by another output of electric ballast.

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, easily causes environmental pollution.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 take LED as basic fluorescent lamp 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, such 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 charged that the other end does not insert the part of lamp socket yet, easily produces 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.Such as Figure 6 and Figure 7, comprise in the prior art power supply driver and two LED lamp strings of two led light sources in the fluorescent tube inside of LED fluorescent lamp, the independent two ends input from fluorescent lamp of civil power is powered to two LED daylight lamp strings respectively.Although 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.Such as Fig. 8 and shown in Figure 9, the civil power of the prior art is only inputted 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.Input 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 on and be used for direct replace fluorescent lamps fluorescent tube in Fig. 1, Fig. 2 and the traditional fluorescent lamp peripheral circuit shown in Figure 3.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 thirst for very much at present producing in a kind of situation of the peripheral circuit structure not changing 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 lamp connecting circuit are provided, in the situation that do not change the conventional fluorescent peripheral circuit, directly uses LED fluorescent lamp replace fluorescent lamps to realize.

The embodiment of the invention provides a kind of LED fluorescent lamp, comprise the LED fluorescent tube, described LED fluorescent tube comprises the first end cap and the second end cap, described the first end cap and described the second end cap comprise respectively two pins, inner at described LED fluorescent tube, between two pins of described the first end cap, be parallel with the first inductance and the first bridge rectifier, between two pins of described the second end cap, be parallel with the second inductance and the second bridge rectifier, and between a pin of a pin of described the first end cap and described the second end cap, be in series with the first electric capacity, between another pin of another pin of described the first end cap and described the second end cap, be in series with the second electric capacity, the output parallel connection LED lamp group of described the first bridge rectifier and described the second bridge rectifier, described LED lamp group comprise the led light source group and are used for providing the circuit of constant current or constant voltage to described led light source group.

Better, the 3rd inductance of connecting between the pin that connects described the first electric capacity at described the first end cap and described the first electric capacity;

The 4th inductance of connecting between the pin that connects described the second electric capacity at described the first end cap and described the second electric capacity.

Better, after described the first inductance, before described the first bridge rectifier, also be parallel with the circuit that is formed by the 3rd electric capacity and the series connection of the first resistance between two pins of described the first end cap;

After described the second inductance, before described the second bridge rectifier, also be parallel with the circuit that is formed by the 4th electric capacity and the series connection of the second resistance between two pins of described the second end cap.

Perhaps, connect series connection the 5th electric capacity between the pin of the 4th inductance at described the first inductance and described the first end cap;

Connect series connection the 6th electric capacity between the pin of the 4th inductance at described the second inductance and described the second end cap.

In addition, the embodiment of the invention also provides a kind of fluorescent lamp connecting circuit, comprise Inductive ballast and starter base in the fluorescent lamp circuit, also comprise in the aforesaid LED fluorescent lamp any, the input of described Inductive ballast is connected to an end that exchanges input, the two pins that the first end of described fluorescent lamp covers is connected to the other end of interchange input and an end of described starter base, two pins on the second end cap of described fluorescent lamp is connected to the output of described Inductive ballast and the other end of described starter base, on the described starter base starter is not installed.

Better, LED fluorescent lamp of the present invention after described the first inductance, before described the first bridge rectifier, also is parallel with the circuit that is formed by the 3rd electric capacity and the series connection of the first resistance between two pins of described the first end cap; After described the second inductance, before described the second bridge rectifier, when also being parallel with the circuit that is formed by the series connection of the 4th electric capacity and the second resistance between two pins of described the second end cap, the output of described the first inductance and with pin that described output links to each other between connect one to make described the first inductance original state be the first switch element of off-state; The output of described the second inductance and with pin that described output links to each other between series connection one to make described the second inductance original state be the second switch element of off-state.

Better, between described the first inductance and described the first switch element, also be in series with the 7th electric capacity;

Between described the second inductance and described second switch element, also be in series with the 8th electric capacity.

In addition, the embodiment of the invention also provides another kind of fluorescent lamp connecting circuit, comprise Inductive ballast and starter base in the fluorescent lamp circuit, also comprise the LED fluorescent lamp, the input of described Inductive ballast is connected to an end that exchanges input, the two pins that the first end of described fluorescent lamp covers is connected to the other end of interchange input and an end of described starter base, two pins on the second end cap of described fluorescent lamp is connected to the output of described Inductive ballast and the other end of described starter base, described starter base is equipped with starter, and described LED fluorescent lamp is the aforesaid LED fluorescent lamp that comprises at least described the first switch element and described second switch element.

Better, described the first switch element and described second switch element be in controllable silicon, photoelectrical coupler, relay and the transistor any;

When described the 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 the 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 the second resistance.

Better, described for give described led light source group provide the circuit of constant current or constant voltage be transistor any.

Perhaps, described is the LED power supply driver for the circuit of constant current or constant voltage being provided for described led light source group.

Better, when described when providing the circuit of constant current or constant voltage to be the LED power supply driver for described led light source group, at the front end of described LED lamp group, the output of described the first bridge rectifier also is parallel with the circuit of the 3rd resistance and the 3rd switch element series connection formation.

Better, described the 3rd switch element comprises in starter, controllable silicon, triode, relay, the Zener diode any.

Better, LED fluorescent lamp of the present invention, at the two ends of described LED lamp group, the output of described the first bridge rectifier is parallel with the first filter capacitor, and the output of described the second bridge rectifier is parallel with the second filter capacitor.

In addition, the embodiment of the invention also provides another kind of fluorescent lamp connecting 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 to the two ends that exchange input, the two pins that the first end of described fluorescent lamp covers is connected to two outputs of described electric ballast, and the two pins on the 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 lamp connecting 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, the two pins that the first end of described fluorescent lamp covers is connected to the first output of described electron rectifier simultaneously, and the two pins on the second end cap of described fluorescent lamp is connected to the 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 the first inductance and the second inductance between the pin of end cap, between the pin of end cap, connected the 3rd inductance and 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, after described the first inductance, the second inductance, 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 in the circuit of LED fluorescent lamp access fluorescent lamp, the LED fluorescent lamp normally is lit.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 the first electric capacity and the 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 the first inductance in parallel and the second inductance, the circuit that is formed by the 3rd electric capacity and the series connection of the first resistance in parallel, and the circuit of connecting and forming by the 4th electric capacity and the second resistance in parallel.In addition, for the input characteristics to fluorescent lamp circuit is better adjusted, the embodiment of the invention on the basis of the first inductance in parallel and the second inductance, also the output of described the first inductance and with pin that described output links to each other between series connection the 5th electric capacity; The output of described the 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 the first resistance in parallel connection, and on the basis of the circuit that is formed by the 4th electric capacity and the series connection of the second resistance in parallel, the output of described the first inductance and with pin that described output links to each other between connect one to make described the first inductance original state be the first switch element of off-state; The output of described the second inductance and with pin that described output links to each other between series connection one to make described the 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 the first inductance and described the first switch element on the basis of series connection the first switch element and second switch element; Between described the second inductance and described second switch element, also be in series with the 8th electric capacity.In addition, when described be the LED power supply driver for the circuit of constant current or constant voltage being provided for described led light source group, when the peripheral circuit of access is the electron rectifier fluorescent lamp circuit, the output of described the 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, so that the input characteristics of the output characteristics of electron rectifier and LED fluorescent lamp is mated at described the 3rd resistance.Above-mentioned various LED fluorescent lamps are installed in the fluorescent lamp connecting circuit of the embodiment of the invention, such fluorescent lamp connecting circuit is 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 greatly economize on resources 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, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the structural representation of existing Inductive ballast fluorescent lamp circuit;

Fig. 2 is the structural representation of existing a kind of electronic ballast fluorescent lamp circuit;

Fig. 3 is the structural representation of existing another kind of electronic 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 the first embodiment of LED fluorescent lamp of the present invention;

Figure 12 is the internal circuit configuration schematic diagram of the 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 electronic 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 electronic 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 electronic 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 electronic 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 electronic 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 electronic 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 electronic 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 electronic 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 the first end cap and the second end cap, described the first end cap and described the second end cap comprise respectively two pins, inner at described LED fluorescent tube, between two pins of described the first end cap, be parallel with the first inductance and the first bridge rectifier, between two pins of described the second end cap, be parallel with the second inductance and the second bridge rectifier, and wherein be in series with the first electric capacity between the pin at the wherein pin of described the first end cap and described the second end cap, between another pin of another pin of described the first end cap and described the second end cap, be in series with the second electric capacity, the output parallel connection LED lamp group of described the first bridge rectifier and described the second bridge rectifier, described LED lamp group comprise the led light source group and are used for providing the circuit of constant current or constant voltage to described led light source group.Provide the circuit of constant current or constant 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 constant 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 constant voltage are provided adopted power supply driver, the LED fluorescent lamp internal circuit configuration of the present embodiment can be such 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, the first end that described pin 1 and pin 2 can be positioned at the LED fluorescent lamp covers, and described pin 3 and pin 4 can be positioned on the second end cap of LED fluorescent lamp.The first bridge rectifier that is formed by Q1-Q4 in parallel between pin 1 and pin 2, between the both positive and negative polarity of the output of the first bridge rectifier that is formed by Q1-Q4, connect a filter capacitor C9 (in the specific implementation, can not comprise filter capacitor C9), between pin 3 and pin 4, be parallel with the second bridge rectifier that is formed by Q5-Q8, between the both positive and negative polarity of the output of the second bridge rectifier that is formed by Q5-Q8, connect a filter capacitor C10 (in the specific implementation, can not comprise filter capacitor C10), and series inductance L3 between pin 1 and pin 3, series inductance L4 between pin 2 and pin 4.As shown in Figure 11, bridge rectifier, the filter capacitor between the bridge rectifier between pin 1 and the pin 2, filter capacitor and pin 3 and the pin 4 is symmetrical structure.Further, be connected two ends with filter capacitor C10 at described filter capacitor C9 and connect the LED lamp group that is formed by the circuit T1 that constant current or constant voltage are provided and led light source group (wherein D1, D2, D3.....Dn are the LED lamp).Provide the circuit T1 of constant current or constant voltage to can be in resistance, the transistor any in the specific implementation.

When LED daylight lamp circuit shown in Figure 11 being connected in the Inductive ballast fluorescent lamp peripheral circuit shown in Figure 1, 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 to the output of described Inductive ballast, the pin 2 of LED daylight lamp circuit and pin 4 are connected on the starter base in the fluorescent lamp peripheral circuit, better, on the described starter base starter is not installed.When being connected in the fluorescent lamp peripheral circuit with LED fluorescent lamp shown in Figure 11, can not change the circuit structure of former fluorescent lamp peripheral circuit.And, when LED daylight lamp circuit shown in Figure 11 being connected in the Inductive ballast fluorescent lamp peripheral circuit shown in Figure 1, under the effect of Inductive ballast fluorescent lamp circuit civil power low frequency (being generally 50-60HZ), capacitor C 1 and capacitor C 2 show very large capacitive reactance, can think open circuit, inductance L 1 and inductance L 2 can be thought short circuit, therefore, therefore, can think that the live wire (perhaps zero line) of civil power is to input simultaneously from pin 1 and pin 2, and can think that the zero line (perhaps live wire) of civil power is to input simultaneously from pin 3 and pin 4.Further, 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 upper, negative pole after the filtering of Rectified alternating current through filtering capacitor C 9 and filter capacitor C10, changes comparatively level and smooth dc high-voltage lower 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 lit.

When being connected to the LED daylight lamp circuit among Figure 11 in the electronic ballast fluorescent lamp peripheral circuit shown in Figure 2, the pin 1 of LED fluorescent lamp, pin 2, pin 3 and pin 4 are connected respectively to four 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, inductance L 1, inductance L 2, capacitor C 1, capacitor C 2 will affect the output characteristics of electric ballast, 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 with realization.

When being connected to the LED daylight lamp circuit among Figure 11 in the electronic ballast fluorescent lamp peripheral circuit shown in Figure 3, 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.In the specific implementation, when exchanging AC input incoming transport electricity, the inductance L 1 of the present embodiment, inductance L 2, capacitor C 1, capacitor C 2 will be regulated the high frequency voltage of electric ballast output, so that the circuit parameter between input pin 1, pin 2, 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 with realization.

As shown in figure 15, it replaces the circuit T1 that constant current or constant voltage are provided shown in Figure 11 with power supply driver.In the specific implementation, when adopting daylight lamp circuit shown in Figure 15, the mode of the mode of its access Inductive ballast fluorescent lamp circuit and access electronic ballast fluorescent lamp circuit 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 increase the series circuit that is formed by resistance R x and starter S1 on the basis of daylight lamp circuit shown in Figure 15.After adopting daylight lamp circuit access Fig. 2 shown in Figure 16 and electronic ballast fluorescent lamp circuit shown in Figure 3, 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 at 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 the switch elements such as controllable silicon, triode, relay, Zener diode, as long as these switch elements can satisfy in LED daylight lamp circuit access electronic 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, generation current flow through resistance R x and gets final product.

Another kind of LED fluorescent lamp provided by the invention, comprise the LED fluorescent tube, described LED fluorescent tube comprises the first end cap and the second end cap, described the first end cap and described the second end cap comprise respectively two pins, inner at described LED fluorescent tube, between two pins of described the first end cap, be parallel with the first inductance, the first bridge rectifier and the first filter capacitor, between two pins of described the second end cap, be parallel with the second inductance, the second bridge rectifier and the second filter capacitor, and wherein be in series with the 3rd inductance and the first electric capacity between the pin at the wherein pin of described the first end cap and described the second end cap, between another pin of another pin of described the first end cap and described the second end cap, be in series with the 4th inductance and the second electric capacity, the two ends parallel connection LED lamp group of the two ends of described the first filter capacitor and described the second filter capacitor, described LED lamp group comprise the led light source group and are used for providing the circuit of constant current or constant voltage to described led light source group.In the specific implementation, can not comprise described the first filter capacitor and described the second filter capacitor.Provide the circuit of constant current or constant 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 constant voltage are provided adopts in resistance, the transistor any, the internal circuit configuration of the LED fluorescent lamp of the present embodiment can be as shown in figure 12, and when the circuit that constant current or constant voltage are provided adopted power supply driver, the LED fluorescent lamp internal circuit configuration of the present embodiment can be as shown in Figure 17 and Figure 18.

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 inductance L3 between capacitor C 1 and pin 1, series inductance L4 between capacitor C 2 and pin 2.The function that circuit shown in Figure 12 and circuit shown in Figure 11 are realized is basic identical, its still can directly be linked into traditional Inductive ballast fluorescent lamp circuit shown in Figure 1 or directly access Fig. 2 and conventional electronic ballast fluorescent lamp circuit shown in Figure 3 in.After effective cooperation of the present embodiment by inductance L 1, inductance L 2, inductance L 3, inductance L 4, capacitor C 1, capacitor C 2, 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 whole circuit.

In the specific implementation, the mode of the mode of the Inductive ballast fluorescent lamp circuit that daylight lamp circuit shown in Figure 12 access is shown in Figure 1 and Fig. 2 and access electronic ballast fluorescent lamp circuit shown in Figure 3 is identical with Figure 11, does not give unnecessary details at this.

When LED daylight lamp circuit shown in Figure 12 being connected in the Inductive ballast fluorescent lamp peripheral circuit shown in Figure 1, 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 to 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 better mode is on the described starter base Y starter not to be installed.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, at this moment, 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, capacitor C 1, the capacitive reactance of capacitor C 2 is very large, inductance L 1, inductance L 2, inductance L 3 and inductance L 4 can be thought short circuit, and capacitor C 1 and capacitor C 2 can be thought 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 upper, 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 lower 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 lit.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 voltage that the LED lamp does not have a lamp tube ends is higher than the starting voltage of starter, and then may make the LED lamp produce the defective of flicker.

In the time of in LED daylight lamp circuit shown in Figure 12 being connected to Fig. 2 and Inductive ballast fluorescent lamp peripheral circuit shown in Figure 3, inductance L 1, inductance L 2, inductance L 3, inductance L 4, capacitor C 1 and capacitor C 2 will affect the output characteristics of electric ballast, high frequency voltage to electric ballast output is regulated, so that the circuit parameter between input pin 1, pin 2, 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 with realization.

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 1 and Fig. 2 and access electronic ballast fluorescent lamp circuit shown in Figure 3 is identical with Figure 11, 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 increase the series circuit that is formed by resistance R x and starter S1 on the basis of daylight lamp circuit shown in Figure 17.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 the first end cap and the second end cap, described the first end cap and described the second end cap comprise respectively two pins, inner at described LED fluorescent tube, between two pins of described the first end cap, be parallel with successively the first inductance, the circuit and the first bridge rectifier that are formed by the series connection of the 3rd electric capacity and the first resistance, between two pins of described the second end cap, be parallel with successively the second inductance, the circuit and the second bridge rectifier that are formed by the series connection of the second electric capacity and the second resistance, and wherein be in series with the 3rd inductance and the first electric capacity between the pin at the wherein pin of described the first end cap and described the second end cap, between another pin of another pin of described the first end cap and described the second end cap, be in series with the 4th inductance and the second electric capacity, the output of described the first bridge rectifier and described the second bridge rectifier the first filter capacitor in parallel and the second filter capacitor, described the first filter capacitor two ends and described the second filter capacitor two ends parallel connection LED lamp group, described LED lamp group comprise the led light source group and are used for providing the circuit of constant current or constant voltage to described led light source group.Provide the circuit of constant current or constant 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 constant 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 constant voltage are provided adopted power supply driver, this LED fluorescent lamp internal circuit configuration can be such as Figure 19 and shown in Figure 20.In the specific implementation, can not comprise the first filter capacitor and the 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 is formed by capacitor C 3 and resistance R 3 series connection in parallel between pin 1 and pin 2, the circuit that is formed 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 10 are realized is basic identical, and it still can directly be linked in traditional Inductive ballast fluorescent lamp circuit shown in Figure 1 or Fig. 2 and Fig. 3 conventional electronic ballast fluorescent lamp circuit.After effective cooperation of the 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, 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 whole circuit.

In the specific implementation, the mode of the mode of the Inductive ballast fluorescent lamp circuit that daylight lamp circuit shown in Figure 13 access is shown in Figure 1 and Fig. 2 and access electronic ballast fluorescent lamp circuit shown in Figure 3 is identical with Figure 11, specifically referring to Figure 23, Figure 24 and Figure 25.

In Figure 23, under the effect of low frequency civil power, capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4 are similar to open circuit, inductance L 1 and inductance L 2 and are similar to short circuit, therefore behind AC ac input end access civil power, its circuit equivalent accesses in the peripheral circuit shown in Figure 1 in circuit shown in Figure 12, does not give unnecessary details at this.In Figure 24 and Figure 25, inductance L 1, inductance L 2, inductance L 3, inductance L 4, capacitor C 1, capacitor C 2, capacitor C 3 and capacitor C 4 will affect the output characteristics of electric ballast, high frequency voltage to electric ballast output is regulated, so that the circuit parameter between input pin 1, pin 2, 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 with realization.

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 its access Inductive ballast fluorescent lamp circuit shown in Figure 1 and Fig. 2 and access electronic ballast fluorescent lamp circuit shown in Figure 3 is identical with Figure 11, 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 increase the series circuit that is formed by resistance R x and starter S1 on the basis of daylight lamp circuit shown in Figure 19.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 the first end cap and the second end cap, described the first end cap and described the second end cap comprise respectively two pins, inner at described LED fluorescent tube, between two pins of described the first end cap, be parallel with the circuit that the first inductance and the 5th capacitances in series form, the first bridge rectifier and the first filter capacitor, between two pins of described the second end cap, be parallel with the circuit that the second inductance and the 6th capacitances in series form, the second rectification circuit and the second filter capacitor, wherein be in series with the 3rd inductance and the first electric capacity between the pin at the wherein pin of described the first end cap and described the second end cap, between another pin of another pin of described the first end cap and described the second end cap, be in series with the 4th inductance and the second electric capacity, the two ends parallel connection LED lamp group of described the first filter capacitor and described the second filter capacitor, described LED lamp group comprise the led light source group and are used for providing the circuit of constant current or constant voltage to described led light source group.Provide the circuit of constant current or constant 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 constant 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 constant voltage are provided adopted power supply driver, this LED fluorescent lamp internal circuit configuration can be such as Figure 21 and shown in Figure 22.In the specific implementation, can not comprise described the first filter capacitor and described the 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 the present embodiment and LED fluorescent lamp embodiment illustrated in fig. 11 are realized is basic identical, and it still can directly be linked in traditional Inductive ballast fluorescent lamp circuit or the conventional electronic ballast fluorescent lamp circuit.After effective cooperation of the 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, 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 whole circuit.

In the specific implementation, the mode of the mode of the Inductive ballast fluorescent lamp circuit that daylight lamp circuit shown in Figure 14 access is shown in Figure 1 and Fig. 2 and access electronic ballast fluorescent lamp circuit shown in Figure 3 is identical with Figure 11, does not give unnecessary details at this.

And when accessing circuit shown in Figure 14 in the Inductive ballast fluorescent lamp circuit shown in Figure 1, under the effect of low frequency civil power, capacitor C 1, capacitor C 2, capacitor C 5, capacitor C 6 is similar to open circuit, inductance L 1 and inductance L 2 are similar to short circuit, therefore behind AC ac input end access civil power, its circuit equivalent directly accesses the external AC input in the rectification circuit that rectification circuit and the Q5-Q8 of Q1-Q4 formation form, in this case, 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 upper, negative pole is lower, after the filtering of Rectified alternating current through filtering capacitor C 1 and filter capacitor C2, change comparatively level and smooth dc high-voltage into, this dc high-voltage is through the T1 LED lamp D1 that flows through, LED lamp D2.......LED lamp Dn is lit the LED lamp to ground.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 voltage that the LED lamp does not have a lamp tube ends is higher than the starting voltage of starter, and then may make the LED lamp produce the defective of flicker.

In the time of in circuit shown in Figure 14 access Fig. 2 and electronic ballast fluorescent lamp circuit shown in Figure 3, inductance L 1, inductance L 2, inductance L 3, inductance L 4, capacitor C 1, capacitor C 2, capacitor C 5 and capacitor C 6 will affect the output characteristics of electric ballast, high frequency voltage to electric ballast output is regulated, so that the circuit parameter between input pin 1, pin 2, 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 with realization.

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 1 and Fig. 2 and access electronic ballast fluorescent lamp circuit shown in Figure 3 is identical with Figure 11, 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 increase the series circuit that is formed by resistance R x and starter S1 on the basis of daylight lamp circuit shown in Figure 21.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 the first end cap and the second end cap, described the first end cap and described the second end cap comprise respectively two pins, inner at described LED fluorescent tube, between two pins of described the first end cap, be parallel with the circuit that the series connection of the first inductance and the first switch element forms, circuit and the first bridge rectifier that the 3rd electric capacity and the series connection of the first resistance form, between two pins of described the second end cap, be parallel with the circuit that the series connection of the second inductance and second switch element forms, circuit and the second bridge rectifier that the 4th electric capacity and the series connection of the second resistance form, and wherein be in series with the 3rd inductance and the first electric capacity between the pin at the wherein pin of described the first end cap and described the second end cap, between another pin of another pin of described the first end cap and described the second end cap, be in series with the 4th inductance and the second electric capacity, the output parallel connection LED lamp group of described the first bridge rectifier and described the second bridge rectifier, described LED lamp group comprise the led light source group and are used for providing the circuit of constant current or constant voltage to described led light source group.In the specific implementation, described the first switch element and described second switch element can be in controllable silicon, photoelectrical coupler, relay and the transistor any.When described the first switch element and/or described second switch element are controllable silicon, described silicon controlled trigger end as the first switch element is connected on the connecting line between described the first electric capacity and described the first resistance, and described silicon controlled trigger end as the second switch element is connected on the connecting line between described the second electric capacity and described the second resistance.In the specific implementation, when providing the circuit of constant current or constant 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 constant 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 the present embodiment and LED fluorescent lamp embodiment illustrated in fig. 11 are realized is basic identical, it still can directly be linked in traditional Inductive ballast fluorescent lamp circuit shown in Figure 1 or Fig. 2 and the conventional electronic ballast fluorescent lamp circuit shown in Figure 3, and when adopting the LED fluorescent lamp access Inductive ballast fluorescent lamp circuit of the present embodiment, the starter on the described Inductive ballast fluorescent lamp circuit can keep.After effective cooperation of the 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, 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 whole circuit.

When being connected to LED daylight lamp circuit shown in Figure 29 in the Inductive ballast fluorescent lamp peripheral circuit shown in Figure 1, 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 to 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 being connected in the fluorescent lamp peripheral circuit with LED fluorescent lamp shown in Figure 29, can not change the circuit structure of former fluorescent lamp peripheral circuit.

Concrete, when LED daylight lamp circuit shown in Figure 29 being connected in the Inductive ballast fluorescent lamp peripheral circuit shown in Figure 1, behind the access 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 large 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), very little in the voltage drop of resistance R 3 and resistance R 4 generations like this, be 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 by pin 2 and pin 4 two ends of starter S, therefore, also can not impact the luminous of circuit even the 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 affect and produce flicker.

When being connected to the LED daylight lamp circuit among Figure 29 in the electronic ballast fluorescent lamp peripheral circuit shown in Figure 2, 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.The 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 in the situation that receive the high-frequency alternating current input, controllable silicon T2 and controllable silicon T3 are become conducting state by off-state.

When being connected to the LED daylight lamp circuit among Figure 29 in the electronic ballast fluorescent lamp peripheral circuit shown in Figure 3, 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.The 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 in the situation that receive the high-frequency alternating current input, controllable silicon T2 and controllable silicon T3 are become conducting state by off-state.

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 1 and Fig. 2 and access electronic ballast fluorescent lamp circuit shown in Figure 3 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 the first end cap and the second end cap, described the first end cap and described the second end cap comprise respectively two pins, inner at described LED fluorescent tube, between two pins of described the first end cap, be parallel with the circuit that the first inductance and the 7th electric capacity and the first switch element three connect and form, circuit and the first bridge rectifier that the 3rd electric capacity and the first resistance are connected and formed, between two pins of described the second end cap, be parallel with the circuit that the second inductance and the 8th electric capacity and second switch element three are connected and formed, circuit and the second bridge rectifier that the 4th electric capacity and the second resistance are connected and formed, and wherein be in series with the first inductance and the first electric capacity between the pin at the wherein pin of described the first end cap and described the second end cap, between another pin of another pin of described the first end cap and described the second end cap, be in series with the second inductance and the second electric capacity, the output parallel connection LED lamp group of described the first bridge rectifier and described the second bridge rectifier, described LED lamp group comprise the led light source group and are used for providing the circuit of constant current or constant voltage to described led light source group.In the specific implementation, described the first switch element and described second switch element can be in controllable silicon, photoelectrical coupler, relay and the transistor any.When described the first switch element and/or described second switch element are controllable silicon, described silicon controlled trigger end as the 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 constant 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 constant voltage are provided adopted power supply driver, this LED fluorescent lamp internal circuit configuration can be shown in figure 32.

Such 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 the coupling of further improving the input characteristics of the output characteristics of Inductive ballast or electric ballast and LED fluorescent lamp.The function that the present embodiment and LED fluorescent lamp embodiment illustrated in fig. 11 are realized is basic identical, it still can directly be linked in traditional Inductive ballast fluorescent lamp circuit shown in Figure 1 or Fig. 2 and the conventional electronic ballast fluorescent lamp circuit shown in Figure 3, and when adopting the LED fluorescent lamp access Inductive ballast fluorescent lamp circuit of the present embodiment, 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 shown in Figure 30 access is shown in Figure 1 and Fig. 2 and access electronic ballast fluorescent lamp circuit shown in Figure 3 is identical with Figure 29, specifically referring to Figure 33, Figure 34 and Figure 35.

In Figure 33, capacitor C 7 and capacitor C 8 can produce very large capacitive reactance to low frequency (50-60HZ) civil power and be not enough to like this 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 by pin 2 and pin 4 two ends of starter S, therefore, also can not impact the luminous of circuit even the present embodiment keeps starter S.

In Figure 34 and Figure 35, can pass through the capacity of appropriate design capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4, capacitor C 7, capacitor C 8 and the resistance of appropriate design resistance R 3 and resistance R 4, make it in the situation that receive the high-frequency alternating current input, controllable silicon T2 and controllable silicon T3 are become conducting state by off-state.And then realize the light source of normal lightening LED lamp group.

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 1 and Fig. 2 and access electronic ballast fluorescent lamp circuit shown in Figure 3 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, certainly can not limit with this interest field of the present invention, and the equivalent variations of therefore doing according to claim of the present invention still belongs to the scope that the present invention is contained.

Claims

1. LED fluorescent lamp, it is characterized in that, comprise the LED fluorescent tube, described LED fluorescent tube comprises the first end cap and the second end cap, described the first end cap and described the second end cap comprise respectively two pins, inner at described LED fluorescent tube, between two pins of described the first end cap, be parallel with the first inductance and the first bridge rectifier, between two pins of described the second end cap, be parallel with the second inductance and the second bridge rectifier, and between a pin of a pin of described the first end cap and described the second end cap, be in series with the first electric capacity, between another pin of another pin of described the first end cap and described the second end cap, be in series with the second electric capacity, the output parallel connection LED lamp group of described the first bridge rectifier and described the second bridge rectifier, described LED lamp group comprise the led light source group and are used for providing the circuit of constant current or constant voltage to described led light source group.

2. LED fluorescent lamp as claimed in claim 1 is characterized in that,

The 3rd inductance of connecting between the pin that connects described the first electric capacity at described the first end cap and described the first electric capacity;

3. LED fluorescent lamp as claimed in claim 1 or 2 is characterized in that,

After described the first inductance, before described the first bridge rectifier, also be parallel with the circuit that is formed by the 3rd electric capacity and the series connection of the first resistance between two pins of described the first end cap;

4. LED fluorescent lamp as claimed in claim 1 or 2 is characterized in that,

Connect series connection the 5th electric capacity between the pin of the 4th inductance at described the first inductance and described the first end cap;

5. LED fluorescent lamp as claimed in claim 3 is characterized in that,

To make described the first inductance original state be the first switch element of off-state in series connection one between described the first inductance and described the first end cap and pin that described the first inductance links to each other;

To make described the second inductance original state be the second switch element of off-state in series connection one between described the second inductance and described the second end cap and pin that described the second inductance links to each other.

6. LED fluorescent lamp as claimed in claim 5 is characterized in that,

Between described the first inductance and described the first switch element, also be in series with the 7th electric capacity;

7. LED fluorescent lamp as claimed in claim 5 is characterized in that,

Described the first switch element and described second switch element be in controllable silicon, photoelectrical coupler, relay and the transistor any;

8. LED fluorescent lamp as claimed in claim 1 or 2 is characterized in that, described for give described led light source group provide the circuit of constant current or constant voltage be transistor, LED power supply driver any.

9. LED fluorescent lamp as claimed in claim 8, it is characterized in that, when described when providing the circuit of constant current or constant voltage to be the LED power supply driver for described led light source group, before described LED lamp group, the output of described the 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 9 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 the first bridge rectifier is parallel with the first filter capacitor, and the output of described the second bridge rectifier is parallel with the second filter capacitor.

12. fluorescent lamp connecting circuit, comprise Inductive ballast and starter base in the fluorescent lamp circuit, it is characterized in that, also comprise such as claim 1-4, each described LED fluorescent lamp among the 8-11, the input of described Inductive ballast is connected to an end that exchanges input, the two pins that the first end of described fluorescent lamp covers is connected to the other end of interchange input and an end of described starter base, two pins on the second end cap of described fluorescent lamp is connected to the output of described Inductive ballast and the other end of described starter base, on the described starter base starter is not installed.

13. fluorescent lamp connecting circuit, comprise Inductive ballast and starter base in the fluorescent lamp circuit, it is characterized in that, also comprise such as each described LED fluorescent lamp among the claim 5-7, the input of described Inductive ballast is connected to an end that exchanges input, the two pins that the first end of described fluorescent lamp covers is connected to the other end of interchange input and an end of described starter base, two pins on the second end cap of described fluorescent lamp is connected to the output of described Inductive ballast and the other end of described starter base, and described starter base is equipped with starter.

14. fluorescent lamp connecting circuit, comprise the electric ballast in the fluorescent lamp circuit, it is characterized in that, also comprise such as each described LED fluorescent lamp among the claim 1-11, the input of described electric ballast is connected to the two ends that exchange input, the two pins that the first end of described fluorescent lamp covers is connected to two outputs of described electric ballast, and the two pins on the second end cap of described fluorescent lamp is connected to two other output of described electric ballast.

15. fluorescent lamp connecting circuit, comprise the electric ballast in the fluorescent lamp circuit, it is characterized in that, also comprise such 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, the two pins that the first end of described fluorescent lamp covers is connected to the first output of described electric ballast simultaneously, and the two pins on the second end cap of described fluorescent lamp is connected to the second output of described electric ballast at the same time.