CN102155643B

CN102155643B - LED (Light Emitting Diode) fluorescent lamp and fluorescent lamp connecting circuit

Info

Publication number: CN102155643B
Application number: CN2010105791665A
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: CN102155643A

Abstract

The embodiment of the invention discloses an LED (Light Emitting Diode) fluorescent lamp and a fluorescent lamp connecting circuit, wherein the LED fluorescent lamp comprises an LED fluorescent lamp tube which comprises a first end cover and a second end cover; the first end cover and the second end cover respectively include two pins; a first bridge type rectifier circuit and a second bridge type rectifier circuit are respectively connected between the pins of the first end cover and the second end cover in parallel; a first inductor is connected between one pin of the first end cover and one pin of the second end cover in series; output ends of the first bridge type rectifier circuit and the second bridge type rectifier circuit are connected with an LED lamp group in parallel; and the LED lamp group comprises an LED light source group and a circuit for providing a constant current or a constant voltage. By using the invention, the fluorescent lamp can be replaced by the LED fluorescent lamp without changing a peripheral circuit of the traditional 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.Be illustrated in figure 1 as the circuit diagram of at present common a kind of fluorescent lamp.As shown in Figure 1, a kind of common fluorescent lamp circuit comprises an electric ballast, a fluorescent tube, civil power (being usually said alternating current) is from the input input of electric ballast, through output two-way direct current signal after the conversion of electric ballast, wherein one road direct current signal is inputted two pin input end of an end cap of fluorescent lamp simultaneously, and another road direct current signal is inputted two pin input end of another end cap of fluorescent lamp simultaneously.

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 easily 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. 2 and shown in Figure 3 be a kind of LED fluorescent lamp and the circuit diagram thereof that the most generally uses at present, as shown in Figures 2 and 3, 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, produces easily potential safety hazard.

For overcoming the defective of Fig. 2 and fluorescent tube shown in Figure 3, Fig. 4 and fluorescent tube shown in Figure 5 have been designed at present.Such as Fig. 4 and shown in Figure 5, 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. 2 and fluorescent tube shown in Figure 3, Fig. 6 and fluorescent tube shown in Figure 7 have also been designed at present.Such as Figure 6 and Figure 7, 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, Fig. 8 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 traditional fluorescent lamp peripheral circuit shown in Figure 1.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, and to be implemented in 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 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 bridge rectifier and be parallel with the second bridge rectifier at two pins of described the second end cap, 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 inductance, 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, 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, before described the first bridge rectifier, be parallel with the 3rd inductance between two pins of described the first end cap;

Before described the second bridge rectifier, be parallel with the 4th inductance between two pins of described the second end cap.

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

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

Perhaps, the output of described the 3rd inductance and with pin that described output links to each other between series connection the 5th electric capacity;

The output of described the 4th inductance and with pin that described output links to each other between series connection the 6th electric capacity.

Better, LED fluorescent lamp of the present invention, the output of described the first inductance and with pin that described output links to each other between series connection the 7th electric capacity; The output of described the second inductance and with pin that described output links to each other between series connection the 8th electric capacity.

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

Better, between described the 3rd inductance and described the first switch element, also be in series with the 3rd electric capacity;

Between described the 4th inductance and described second switch element, also be in series with the 4th electric capacity.

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 first 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 second 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 resistance, 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 5th 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.

Better, LED fluorescent lamp of the present invention, the output of described the first inductance and with pin that described output links to each other between series connection the 4th switch element;

The output of described the second inductance and with pin that described output links to each other between series connection the 5th switch element.

In addition, the embodiment of the invention also provides a 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.When the LED fluorescent lamp of the connection of the fluorescent lamp connecting circuit in the present embodiment comprised the 4th switch element and the 5th switch element, described the 4th switch element and described the 5th switch element were closed.

Implement the embodiment of the invention, have following beneficial effect:

The LED fluorescent lamp that the embodiment of the invention provides between the pin of end cap, connected the first inductance and the second 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 and the second 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 is the 3rd inductance in parallel and the 4th inductance also.In addition, for the input characteristics to fluorescent lamp circuit is better adjusted, the embodiment of the invention on the basis of the 3rd inductance in parallel and the 4th inductance, the circuit that is formed by the first electric capacity and the series connection of the first resistance in parallel, and the circuit of connecting and forming by the second 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 3rd inductance in parallel and the 4th inductance, also the output of described the 3rd inductance and with pin that described output links to each other between the 5th electric capacity of connecting; The output of described the 4th 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 first 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 second electric capacity and the series connection of the second resistance in parallel, the output of described the 3rd inductance and with pin that described output links to each other between connect one to make described the 3rd inductance original state be the first switch element of off-state; The output of described the 4th inductance and with pin that described output links to each other between series connection one to make described the 4th 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 3rd electric capacity between described the 3rd inductance and described the first switch element on the basis of series connection the first switch element and second switch element; Between described the 4th inductance and described second switch element, also be in series with the 4th 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 5th 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 5th 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 a kind of electronic ballast fluorescent lamp circuit;

Fig. 2 is existing a kind of LED fluorescent lamp peripheral circuit connected mode schematic diagram;

Fig. 3 is the internal circuit configuration schematic diagram of LED fluorescent lamp shown in Figure 2;

Fig. 4 is existing another 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 the peripheral circuit connected mode schematic diagram of existing another kind of LED fluorescent lamp;

Fig. 9 is the internal circuit configuration schematic diagram of the first embodiment of LED fluorescent lamp of the present invention;

Figure 10 is that LED daylight lamp circuit shown in Figure 9 is connected to the electrical block diagram in the electronic ballast fluorescent lamp peripheral circuit shown in Figure 1;

Figure 11 is the internal circuit configuration schematic diagram of the second embodiment of LED fluorescent lamp of the present invention;

Figure 12 is that LED daylight lamp circuit shown in Figure 11 is connected to the electrical block diagram in the electronic ballast fluorescent lamp peripheral circuit shown in Figure 1;

Figure 13 is the structural representation of existing another kind of electronic ballast fluorescent lamp circuit;

Figure 14 is that LED daylight lamp circuit shown in Figure 11 is connected to the electrical block diagram in the electronic ballast fluorescent lamp peripheral circuit shown in Figure 13.

Figure 15 is the internal circuit configuration schematic diagram of the 3rd embodiment of LED fluorescent lamp of the present invention;

Figure 16 is that LED daylight lamp circuit shown in Figure 15 is connected to the electrical block diagram in the electronic ballast fluorescent lamp peripheral circuit shown in Figure 1;

Figure 17 is the internal circuit configuration schematic diagram of the 4th embodiment of LED fluorescent lamp of the present invention;

Figure 18 is that LED daylight lamp circuit shown in Figure 17 is connected to the electrical block diagram in the electronic ballast fluorescent lamp peripheral circuit shown in Figure 1;

Figure 19 is the internal circuit configuration schematic diagram of the 5th embodiment of LED fluorescent lamp of the present invention;

Figure 20 is that LED daylight lamp circuit shown in Figure 19 is connected to the electrical block diagram in the electronic ballast fluorescent lamp peripheral circuit shown in Figure 1;

Figure 21 is the internal circuit configuration schematic diagram of the 6th embodiment of LED fluorescent lamp of the present invention;

Figure 22 is that LED daylight lamp circuit shown in Figure 21 is connected to the electrical block diagram in the electronic ballast fluorescent lamp peripheral circuit shown in Figure 1;

Figure 23 is the internal circuit configuration schematic diagram of the 7th embodiment of LED fluorescent lamp of the present invention;

Figure 24 is that LED daylight lamp circuit shown in Figure 23 is connected to the electrical block diagram in the electronic ballast fluorescent lamp peripheral circuit shown in Figure 1;

Figure 25 is the electrical block diagram in the Inductive ballast fluorescent lamp peripheral circuit that is connected to of LED daylight lamp circuit shown in Figure 23;

Figure 26 is the internal circuit configuration schematic diagram of the 8th embodiment of LED fluorescent lamp of the present invention;

Figure 27 is the internal circuit configuration schematic diagram of the 9th embodiment of LED fluorescent lamp of the present invention;

Figure 28 is the internal circuit configuration schematic diagram of the tenth embodiment of LED fluorescent lamp of the present invention;

Figure 29 is the internal circuit configuration schematic diagram of the 11 embodiment of LED fluorescent lamp of the present invention;

Figure 30 is the internal circuit configuration schematic diagram of the 12 embodiment of LED fluorescent lamp of the present invention;

Figure 31 is the internal circuit configuration schematic diagram of the 13 embodiment of LED fluorescent lamp of the present invention;

Figure 32 is the internal circuit configuration schematic diagram of the 14 embodiment of LED fluorescent lamp of the present invention;

Figure 33 is the internal circuit configuration schematic diagram of the 15 embodiment of LED fluorescent lamp of the present invention;

Figure 34 is the internal circuit configuration schematic diagram of the 16 embodiment of LED fluorescent lamp of the present invention;

Figure 35 is the internal circuit configuration schematic diagram of the 17 embodiment of LED fluorescent lamp of the present invention;

Figure 36 is the internal circuit configuration schematic diagram of the 18 embodiment of LED fluorescent lamp of the present invention;

Figure 37 is the internal circuit configuration schematic diagram of the 19 embodiment of LED fluorescent lamp of the present invention;

Figure 38 is the internal circuit configuration schematic diagram of the 20 embodiment of LED fluorescent lamp of the present invention;

Figure 39 is the electrical block diagram of circuit belt switch shown in Figure 37.

Figure 40 is the electrical block diagram that the described LED daylight lamp circuit of Figure 21 directly accesses the first embodiment of civil power;

Figure 41 is the electrical block diagram that the described LED daylight lamp circuit of Figure 21 directly accesses the second embodiment of civil power;

Figure 42 is the electrical block diagram that the described LED daylight lamp circuit of Figure 21 directly accesses the 3rd embodiment of civil power;

Figure 43 is the electrical block diagram that the described LED daylight lamp circuit of Figure 21 directly accesses the 4th embodiment of civil power.

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, be parallel with the second bridge rectifier being parallel with between two pins of described the first end cap between the first bridge rectifier and two pins at described the second end cap, and wherein be in series with the first inductance 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, 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, when the described circuit that constant current or constant voltage be provided adopts in resistance, the transistor any, the inside of this LED fluorescent lamp provides the circuit structure of constant current or constant voltage can be as shown in Figure 9, 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 26 and shown in Figure 27.

As shown in Figure 9, 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 C1 (in the specific implementation, can not comprise filter capacitor C1), 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 C2 (in the specific implementation, can not comprise filter capacitor C2), and series inductance L3 between pin 1 and pin 3, series inductance L4 between pin 2 and pin 4.As shown in Figure 9, 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 C2 at described filter capacitor C1 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.

Figure 10 is that LED daylight lamp circuit shown in Figure 9 is connected to the electrical block diagram in the electronic ballast fluorescent lamp peripheral circuit of Fig. 1.Simultaneously, Figure 10 has also formed the structural representation of the first embodiment of fluorescent lamp connecting circuit of the present invention.In traditional fluorescent lamp circuit, electric ballast is used for starting fluorescent tube, it can under the condition of low-power consumption, high power factor, realize that traditional Inductive ballast provides preheat curent, starts the effect that fluorescent tube, stabling current are lighted in high-voltage breakdown to Filament of fluorescent lamp.It operates mainly in the high frequency state about 40KHZ.Concrete, as shown in figure 10, when being connected to the LED daylight lamp circuit among Fig. 9 in the electronic ballast fluorescent lamp peripheral circuit shown in Figure 1, 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, then start high pressure and trigger the conducting of LDE lamp, and in the present embodiment, inductance L 3 and inductance L 4 will affect the output characteristics of electric ballast, concrete, inductance L 3 and inductance L 4 can be regulated the high frequency voltage of electric ballast output, 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 to be implemented in, normally the LED lamp is lighted.

As shown in figure 26, it replaces the circuit T1 that constant current or constant voltage are provided shown in Fig. 9 with power supply driver.In the specific implementation, when adopting daylight lamp circuit shown in Figure 26, the mode of the electronic ballast fluorescent lamp circuit that its access is shown in Figure 1 is identical with the connecting circuit of Figure 10, does not give unnecessary details at this.

In addition, shown in Figure 27 (having removed capacitor C 1 and capacitor C 2 among Figure 26), 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 26.Such as Figure 27, at the front end of described LED lamp group, the output of described the first bridge rectifier also is parallel with the circuit of resistance R x and starter S1 series connection formation.After employing daylight lamp circuit shown in Figure 27 accesses the electronic ballast fluorescent lamp circuit in mode shown in Figure 10, 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, 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 the first 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, be parallel with the second bridge rectifier in parallel between the first bridge rectifier and two pins at described the second end cap between two pins of described the first end cap, and, before described the first bridge rectifier, be parallel with the 3rd inductance between two pins of described the first end cap; Before described the second bridge rectifier, be parallel with the 4th inductance between two pins of described the second end cap; And wherein be in series with the first inductance 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, 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 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, this LED fluorescent lamp internal circuit configuration can be such as Figure 28 and shown in Figure 29.

As shown in figure 11, LED fluorescent lamp internal circuit of the present invention can be on the basis of circuit shown in Figure 9, before the first bridge rectifier that Q1-Q4 forms, the 3rd inductance L 1 in parallel between described pin 1 and pin 2, before the second bridge rectifier that Q5-Q8 forms, the 4th inductance L 2 in parallel between described pin 3 and pin 4.The function that circuit shown in Figure 11 and circuit shown in Figure 9 are realized is basic identical, it still can directly be linked in the conventional electronic ballast fluorescent lamp circuit shown in Figure 1, meanwhile, the LED fluorescent lamp of present embodiment also can directly access in the conventional electronic ballast fluorescent lamp circuit shown in Figure 13.After effective cooperation of present embodiment by inductance L 1, inductance L 2, 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.

Figure 12 is that LED daylight lamp circuit shown in Figure 11 is connected to the electrical block diagram in the electronic ballast fluorescent lamp peripheral circuit of Fig. 1.Simultaneously, Figure 12 has also formed the structural representation of the second embodiment of fluorescent lamp connecting circuit of the present invention.In traditional fluorescent lamp circuit, electric ballast is used for starting fluorescent tube, it can under the condition of low-power consumption, high power factor, realize that traditional Inductive ballast provides preheat curent, starts the effect that fluorescent tube, stabling current are lighted in high-voltage breakdown to Filament of fluorescent lamp.It operates mainly in the high frequency state about 40KHZ.Concrete, as shown in figure 12, when being connected to the LED daylight lamp circuit among Figure 11 in the electronic ballast fluorescent lamp peripheral circuit shown in Figure 1, 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 present embodiment, inductance L 2, inductance L 3, inductance L 4 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 to be implemented in, normally the LED lamp is lighted.

Figure 14 is that LED daylight lamp circuit shown in Figure 11 is connected to the electrical block diagram in the electronic ballast fluorescent lamp peripheral circuit of Figure 13.As shown in figure 14, when being connected to the LED daylight lamp circuit among Figure 11 in the electronic ballast fluorescent lamp peripheral circuit shown in Figure 13, 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, inductance L 3, inductance L 4 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 to be implemented in, normally the LED lamp is lighted.

As shown in figure 28, 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 28, the mode of its access Fig. 1 and electronic ballast fluorescent lamp circuit shown in Figure 13 is identical with the connecting circuit of Figure 12, Figure 14, does not give unnecessary details at this.

In addition, shown in Figure 29 (having removed capacitor C 1 and capacitor C 2 among Figure 28), 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 28.The effect of Rx among Figure 29 and starter S1 with and alternative elements and Figure 27 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 3rd inductance, the circuit and the first bridge rectifier that are formed by the series connection of the first electric capacity and the first resistance, between two pins of described the second end cap, be parallel with successively the 4th 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 first inductance 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, 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 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 15, 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 30 and shown in Figure 31.

As shown in figure 15, the internal circuit of LED fluorescent lamp of the present invention can be on the basis of circuit shown in Figure 11, 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 15 and circuit shown in Figure 9 are realized is basic identical, and it still can directly be linked in the conventional electronic ballast fluorescent lamp circuit of Fig. 1.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, 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.

Figure 16 is that LED daylight lamp circuit shown in Figure 15 is connected to the electrical block diagram in the electronic ballast fluorescent lamp peripheral circuit of Fig. 1.Simultaneously, Figure 16 has also formed the structural representation of the 3rd embodiment of fluorescent lamp connecting circuit of the present invention.As shown in figure 16, when being connected to the LED daylight lamp circuit among Figure 15 in Fig. 1 electronic ballast fluorescent lamp peripheral circuit, the pin 1 of LED fluorescent lamp, pin 2, pin 3 and pin 4 are connected to the output 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, present embodiment is by inductance L 1, capacitor C 3, resistance R 3, inductance L 2, capacitor C 4, inductance L 3, after effective cooperation of inductance L 4 and resistance R 4, 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 to be implemented in, normally the LED lamp is lighted.

Same, the LED fluorescent lamp of present embodiment also can be used for electronic ballast fluorescent lamp circuit shown in Figure 13.Its access way is identical with Figure 14, does not give unnecessary details at this.

As shown in figure 30, it replaces the circuit T1 that constant current or constant voltage are provided shown in Figure 15 with power supply driver.In the specific implementation, when adopting daylight lamp circuit shown in Figure 30, the mode of its access electronic ballast fluorescent lamp circuit is identical with the connecting circuit of Figure 16, Figure 14, does not give unnecessary details at this.

In addition, shown in Figure 31 (having removed capacitor C 1 and capacitor C 2 among Figure 30), 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 30.The effect of Rx among Figure 31 and starter S1 with and alternative elements and Figure 27 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 circuit and the first bridge rectifier that the 3rd inductance and the 5th capacitances in series form, between two pins of described the second end cap, be parallel with circuit and the second rectification circuit that the 4th inductance and the 6th capacitances in series form, wherein be in series with the first inductance 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, 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 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 17, 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 32 and shown in Figure 33.

As shown in figure 17, the internal circuit of LED fluorescent lamp of the present invention can be on the basis of circuit shown in Figure 11, the capacitor C 5 of having connected between inductance L 1 and pin 2, the capacitor C 6 of having connected between inductance L 2 and pin 4.The function that circuit shown in Figure 17 and circuit shown in Figure 9 are realized is basic identical, and it still can directly be linked in the conventional electronic ballast fluorescent lamp circuit of Fig. 1.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, 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.

Figure 18 is that LED daylight lamp circuit shown in Figure 17 is connected to the electrical block diagram in the electronic ballast fluorescent lamp peripheral circuit of Fig. 1.Simultaneously, Figure 18 has also formed the structural representation of the 4th embodiment of fluorescent lamp connecting circuit of the present invention.As shown in figure 18, when being connected to the LED daylight lamp circuit among Figure 17 in the electronic ballast fluorescent lamp peripheral circuit shown in Figure 1, 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 present embodiment, capacitor C 5, inductance L 2, capacitor C 6, inductance L 3 and inductance L 4 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 to be implemented in, normally the LED lamp is lighted.

Shown in figure 32, it replaces the circuit T1 that constant current or constant voltage are provided shown in Figure 17 with power supply driver.In the specific implementation, when adopting daylight lamp circuit shown in Figure 32, the mode of its access electronic ballast fluorescent lamp circuit is identical with the connecting circuit of Figure 18, Figure 14, does not give unnecessary details at this.

In addition, shown in Figure 33 (having removed capacitor C 1 and capacitor C 2 among Figure 32), 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 32.The effect of Rx among Figure 33 and starter S1 with and alternative elements and Figure 27 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 3rd inductance and the first switch element forms, circuit and the first bridge rectifier that the first 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 4th inductance and second switch element forms, circuit and the second bridge rectifier that the second electric capacity and the series connection of the second resistance form, and wherein be in series with the first inductance 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, 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 switch element original state is off-state.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 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 19, 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 34 and shown in Figure 35.

As shown in figure 19, the internal circuit of LED fluorescent lamp of the present invention can be on the basis of circuit shown in Figure 15, 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 circuit shown in Figure 19 and circuit shown in Figure 9 are realized is basic identical, and it still can directly be linked in the conventional electronic ballast fluorescent lamp circuit shown in Figure 1.After effective cooperation of present embodiment by 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.

Figure 20 is that LED daylight lamp circuit shown in Figure 19 is connected to the electrical block diagram in the electronic ballast fluorescent lamp peripheral circuit of Fig. 1.Simultaneously, Figure 20 has also formed the structural representation of the 5th embodiment of fluorescent lamp connecting circuit of the present invention.As shown in figure 20, when being connected to the LED daylight lamp circuit among Figure 19 in the electronic ballast fluorescent lamp peripheral circuit shown in Figure 1, 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, through exporting high-frequency alternating current (about 40KHZ) after the electric ballast, this high-frequency alternating current is inputted respectively from pin 1, pin 2, pin 3 and pin 4, and the capacitive reactance of the high-frequency alternating current of

capacitor C

3 and 4 pairs of inputs of capacitor C will diminish.According to electrician's knowledge as can be known, when capacitance one timing, incoming frequency is higher, the capacitive reactance that electric capacity produces is less, therefore, and in the present embodiment, therefore under the effect of high-frequency alternating current, capacitor C 3 and capacitor C 4 show less capacitive reactance, and larger electric current flow through resistance R 3 and resistance R 4 can be arranged.Present embodiment can pass through the capacity of appropriate design capacitor C 3, capacitor C 4 and the resistance of appropriate design resistance R 3 and resistance R 4, makes it in the situation that receives the high-frequency alternating current input, and controllable silicon T2 and controllable silicon T3 are become conducting state by off-state.And present embodiment is when controllable silicon T2 and controllable silicon T3 conducting, and this embodiment namely is equivalent to the circuit of the 3rd embodiment shown in Figure 15.

Accordingly, the LED fluorescent lamp in the present embodiment also can directly access in the electronic ballast fluorescent lamp circuit shown in Figure 13, and its access way is identical with Figure 14, does not give unnecessary details at this.

As shown in figure 34, it replaces the circuit T1 that constant current or constant voltage are provided shown in Figure 19 with power supply driver.In the specific implementation, when adopting daylight lamp circuit shown in Figure 34, the mode of its access electronic ballast fluorescent lamp circuit and Figure 20, connecting circuit shown in Figure 14 are identical, do not give unnecessary details at this.

In addition, shown in Figure 35 (having removed capacitor C 1 and capacitor C 2 among Figure 34), 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 34.The effect of Rx among Figure 35 and starter S1 with and alternative elements and Figure 27 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 3rd inductance, the circuit that the 3rd electric capacity and the first switch element three connect and form, circuit and the first bridge rectifier that the first electric capacity and the first resistance are connected and formed, between two pins of described the second end cap, be parallel with the 4th inductance, the circuit that the 4th electric capacity and second switch element three connect and form, circuit and the second bridge rectifier that the second electric capacity and the second resistance are connected and formed, and wherein be in series with the first inductance 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, 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 switch element original state is off-state.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 21, 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 36 and shown in Figure 37.

Such as Figure 21, the internal circuit of LED fluorescent lamp of the present invention can be on the basis of circuit shown in Figure 19, 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 circuit shown in Figure 21 and circuit shown in Figure 9 are realized is basic identical, and it still can directly be linked in the conventional electronic ballast fluorescent lamp circuit shown in Figure 1.

Figure 22 is that LED daylight lamp circuit shown in Figure 21 is connected to the electrical block diagram in the electronic ballast fluorescent lamp peripheral circuit of Fig. 1.Simultaneously, Figure 22 has also formed the structural representation of the 6th embodiment of fluorescent lamp connecting circuit of the present invention.As shown in figure 22, when being connected to the LED daylight lamp circuit among Figure 21 in the electronic ballast fluorescent lamp peripheral circuit shown in Figure 1, 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.

Accordingly, the LED fluorescent lamp of present embodiment also can directly access in the electronic ballast fluorescent lamp circuit shown in Figure 13, and its access way is identical with Figure 14, does not give unnecessary details at this.

As shown in figure 36, it replaces the circuit T1 that constant current or constant voltage are provided shown in Figure 21 with power supply driver.In the specific implementation, when adopting daylight lamp circuit shown in Figure 36, the mode of its access electronic ballast fluorescent lamp circuit and Figure 22 and connecting circuit shown in Figure 14 are identical, do not give unnecessary details at this.

In addition, shown in Figure 37 (having removed capacitor C 1 and capacitor C 2 among Figure 36), 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 36.The effect of Rx among Figure 37 and starter S1 with and alternative elements and Figure 27 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, be parallel with the 4th inductance and the second bridge rectifier being parallel with between two pins of described the first end cap between the 3rd inductance and the first bridge rectifier and two pins at described the second end cap, and wherein be in series with the first inductance and the 7th 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 8th 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 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 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 as shown in figure 43.

The purpose of introducing the 7th electric capacity and the 8th electric capacity in the present embodiment also is better the Inductive ballast in traditional Inductive ballast fluorescent lamp circuit and the traditional electronic ballast fluorescent lamp circuit and the output characteristics of electric ballast and the input characteristics of LED daylight are mated.

As shown in figure 23, on the basis of Figure 11, series capacitance C9 after inductance L 3, series capacitance C10 after the inductance L 4.

Figure 24 is that LED daylight lamp circuit shown in Figure 23 is connected to the electrical block diagram in the electronic ballast fluorescent lamp peripheral circuit of Fig. 1.Simultaneously, Figure 24 has also formed the structural representation of the 7th embodiment of fluorescent lamp connecting circuit of the present invention.As shown in figure 24, when being connected to the LED daylight lamp circuit among Figure 23 in Fig. 1 electronic ballast fluorescent lamp peripheral circuit, the pin 1 of LED fluorescent lamp, pin 2, pin 3 and pin 4 are connected to the output 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, present embodiment is by inductance L 1, inductance L 2, inductance L 3, inductance L 4, after effective cooperation of capacitor C 9 and capacitor C 10, 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 to be implemented in, normally the LED lamp is lighted.

In addition, as shown in figure 25, LED daylight lamp circuit shown in Figure 23 also can be connected in traditional Inductive ballast fluorescent lamp peripheral circuit.Specifically as shown in figure 25, when LED daylight lamp circuit shown in Figure 23 being connected in traditional Inductive ballast fluorescent lamp peripheral circuit, 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, as shown in figure 25, do not connect starter on the described starter base Y.As shown in Figure 25, when being connected in the fluorescent lamp peripheral circuit with LED fluorescent lamp shown in Figure 23, do not change the circuit structure of former fluorescent lamp peripheral circuit.

In addition, except circuit shown in Figure 11 can be transformed according to the circuit mode of Figure 23, increase beyond capacitor C 9 and the capacitor C 10, the embodiment that other do not comprise capacitor C 9 and capacitor C 10 provided by the present invention all can increase capacitor C 9 and capacitor C 10 according to Figure 11 mode identical with Figure 23, and these increases have the embodiment of capacitor C 9 and capacitor C 10 not give unnecessary details at this.

Replace circuit T1 (having removed capacitor C 1 and the capacitor C 2 among Figure 23) among Figure 23 with the LED power supply driver among Figure 38, and the output Rx in parallel of the first bridge rectifier that forms at Q1-Q4 and the series circuit that S1 forms.The effect of Rx among Figure 38 and starter S1 with and alternative elements and Figure 27 similar, do not give unnecessary details at this.

In the specific implementation, do not comprise among the embodiment of LED fluorescent lamp of described the 7th electric capacity and described the 8th electric capacity in the present invention, also can the output of described the first inductance and with pin that described output links to each other between series connection the 4th switch element, the output of described the second inductance and with pin that described output links to each other between the 5th switch element of connecting.Like this, the LED fluorescent lamp of the embodiment of the invention not only can be accessed by in the conventional fluorescent circuit for lamp, and it also can directly access civil power.When the LED fluorescent lamp that comprises the 4th switch and the 5th switch directly accesses civil power, described the 4th switch and the 5th switch will be in off-state, and when the LED fluorescent lamp that comprises the 4th switch and the 5th switch accessed in the conventional fluorescent circuit for lamp shown in Figure 1, described the 4th switch and described the 5th switch all should be closed.Figure 39 shows the structural representation of Figure 37 band the 4th switch and the 5th switch.Concrete, as shown in figure 39, tandem tap K1 between inductance L 3 and pin 3, tandem tap K2 between inductance L 4 and pin 4.In other embodiment of LED fluorescent lamp of the present invention, position and the present embodiment of K1 and K2 are similar, do not give unnecessary details at this.

Figure 40 namely is a kind of connecting circuit schematic diagram that LED fluorescent lamp internal circuit shown in Figure 21 directly accesses civil power.As shown in figure 40, exchanging the AC input accesses simultaneously from the two ends of LED fluorescent lamp, wherein the pin 1 of LED fluorescent lamp and pin 2 are connected to an end of AC input simultaneously, and pin 3 and pin 4 are connected to the other end of AC input simultaneously, and K switch 1 and K switch 2 all are in off-state in Figure 40.Figure 41 is the another kind of connecting circuit schematic diagram that LED fluorescent lamp internal circuit shown in Figure 21 directly accesses civil power.As shown in figure 41, exchange the AC input and access simultaneously from the two ends of LED fluorescent lamp, wherein the pin 1 of LED fluorescent lamp and pin 3 are vacant, and pin 2 and pin 4 are connected respectively to the two ends of AC input, same, K switch 1 and K switch 2 all are in off-state in Figure 41.Figure 42 is another connecting circuit schematic diagram that LED fluorescent lamp internal circuit shown in Figure 21 directly accesses civil power.As shown in figure 42, interchange AC input enters from a termination of LED fluorescent lamp, and the other end of LED fluorescent lamp is vacant, concrete, exchange the AC input from pin 1 and pin 2 accesses, and pin 3 and pin 4 are vacant, same, K switch 1 and K switch 2 all are in off-state in Figure 42.Figure 43 is another connecting circuit schematic diagram that LED fluorescent lamp internal circuit shown in Figure 21 directly accesses civil power.As shown in figure 43, two groups exchange the AC input from the two ends access of LED fluorescent lamp, and wherein one group of AC input is from pin 1 and pin 2 accesses, and another group AC input is from pin 3 and pin 4 accesses, same, K switch 1 and K switch 2 all are in off-state in Figure 43.Certainly, other embodiment of LED fluorescent lamp of the present invention also can directly access civil power, and the mode that other embodiment access civil power is similar to mode shown in Figure 43 to Figure 40, does not give unnecessary details at this.

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, be parallel with the second bridge rectifier being parallel with between two pins of described the first end cap between the first bridge rectifier and two pins at described the second end cap, 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 inductance, 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, the output parallel connection LED lamp group of described the first bridge rectifier and described the 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

Before described the first bridge rectifier, be parallel with the 3rd inductance between two pins of described the first end cap;

Before described the second bridge rectifier, be parallel with the 4th inductance between two pins of described the second end cap;

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

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

To make described the 3rd inductance original state be the first switch element of off-state in series connection one between described the 3rd inductance and described the first end cap and pin that described the 3rd inductance links to each other;

To make described the 4th inductance original state be the second switch element of off-state in series connection one between described the 4th inductance and described the second end cap and pin that described the 4th inductance links to each other.

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

Between described the 3rd inductance and described the first switch element, also be in series with the 3rd electric capacity;

4. LED fluorescent lamp as claimed in claim 2 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;

5. such as each described LED fluorescent lamp among the claim 1-4, it is characterized in that, described for give described led light source group provide the circuit of constant current or constant voltage be resistance, transistor, LED power supply driver any.

6. LED fluorescent lamp as claimed in claim 5, 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, 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 5th resistance and the 3rd switch element series connection formation.

7. LED fluorescent lamp as claimed in claim 6 is characterized in that, described the 3rd switch element comprises in starter, controllable silicon, triode, relay, the Zener diode any.

8. such as each described LED fluorescent lamp among the claim 1-4, it 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.

9. 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 1-4, 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.