CN102155645A

CN102155645A - LED (light emitting diode) fluorescent lamp and fluorescent lamp connecting circuit

Info

Publication number: CN102155645A
Application number: CN2010105791928A
Authority: CN
Inventors: 刘昌贵
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-07
Filing date: 2010-12-07
Publication date: 2011-08-17
Anticipated expiration: 2030-12-07
Also published as: CN102155645B

Abstract

The embodiment of the invention discloses an LED (light emitting diode) fluorescent lamp and a fluorescent lamp connecting circuit, The LED fluorescent lamp comprises an LED fluorescent lamp tube which comprises a first end cover and a second end cover, the first end cover and the second end cover respectively comprise two pins, a first bridge rectifier circuit and a second bridge rectifier circuit are respectively connected in parallel between the pins of the first end cover and the second end cover, the output ends of the first bridge rectifier circuit and the second bridge rectifier circuit are connected in parallel with an LED lamp bank which comprises an LED light source group and a circuit which is used for providing constant current or constant voltage for the LED light source group, a first capacitor is connected in series between the input end of the LED lamp bank and a pin of the second end cover, and a second capacitor is connected in series between the output end of the LED lamp group and a pin of the first end cover. By adopting the LED fluorescent lamp and the fluorescent lamp connecting circuit, a fluorescent lamp is directly replaced by the LED fluorescent lamp under the condition that a peripheral circuit of a traditional fluorescent lamp is not changed.

Description

A kind of LED fluorescent lamp and fluorescent lamps connected connection circuit

Technical field

The present invention relates to the LED field, relate in particular to LED fluorescent lamp and fluorescent lamps connected connection circuit.

Background technology

In the traditional lighting light source, straight tube fluorescent lamp and circline are used for commercial lighting, office lighting and domestic lighting in a large number.Be the circuit diagram of at present common two kinds of fluorescent lamps as shown in Figures 1 and 2.As shown in Figure 1, first kind of common fluorescent lamp circuit comprises that an Inductive ballast, a fluorescent tube and are installed in the starter S on the starter base Y, and civil power (being usually said alternating current) is imported simultaneously from an end of Inductive ballast and an end of fluorescent lamp.As shown in Figure 2, second kind of common fluorescent lamp circuit replaced Inductive ballast in first kind of mode with 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, causes environmental pollution easily.Development along with light source technology, the light emitting diode (LED) that the solid state light emitter performance occurred, the power savings advantages of led light source and environment-friendly advantage more surpass fluorescent lamp, therefore, in recent years, the LED lamp replaces traditional various light sources successively, on this basis, also designs fluorescent lamp based on LED to replace traditional straight tube fluorescent lamp or circline.

At present, common LED fluorescent tube comprises following several:

Fig. 3 and shown in Figure 4 be a kind of LED fluorescent lamp and the circuit diagram thereof that the most generally uses at present, as shown in Figures 3 and 4, the power supply driver that comprises a plurality of led light sources and driving LED light source in LED fluorescent-lamp tube inside, civil power enters from the two ends of fluorescent tube, this LED fluorescent lamp is after an end of fluorescent tube inserts lamp socket and energising, it is also charged that the other end does not insert the part of lamp socket, is easy to generate potential safety hazard.

For overcoming the defective of Fig. 3 and fluorescent tube shown in Figure 4, Fig. 5 and fluorescent tube shown in Figure 6 have been designed at present.As Fig. 5 and shown in Figure 6, comprise power supply driver and two LED lamp strings of two led light sources in the prior art in the fluorescent tube inside of LED fluorescent lamp, the independent two ends input from fluorescent lamp of civil power is acted in collusion to make each other's confessions to two LED fluorescent lamps respectively.Though can solve potential safety hazard like this, increase the cost of making fluorescent tube.

In addition, for overcoming the defective of Fig. 3 and fluorescent tube shown in Figure 4, Fig. 7 and fluorescent tube shown in Figure 8 have also been designed at present.As shown in Figures 7 and 8, the civil power of the prior art is only imported from an end of LED fluorescent tube, and the other end is vacant.

In addition, Fig. 9 is another kind of more common LED fluorescent lamp design, and this scheme moves on to the LED power supply driver outside of fluorescent-lamp tube.Import from the two ends of LED fluorescent-lamp tube respectively behind the driving power output dc low-voltage electricity.

All there is following technological deficiency in foregoing several frequently seen LED fluorescent lamp design:

Above-mentioned various LED fluorescent lamp all can not be directly installed in traditional fluorescent lamp peripheral circuit illustrated in figures 1 and 2 and be used for direct replace fluorescent lamps fluorescent tube.If above-mentioned various LED fluorescent lamps are installed in traditional fluorescent lamp circuit, more or less need to change the structure of described fluorescent lamp peripheral circuit.

Because fluorescent lamp uses in life in a large number, special is that the designed support of fluorescent lamp, lamp panel and peripheral circuit are also disposed already in a large number, if the peripheral circuit in order to use the LED fluorescent lamp with the fluorescent lamp of moulding changes, this will increase a large amount of costs, and waste a large amount of resources.Therefore present very serious hope can produce a kind of under the situation of the peripheral circuit structure that does not change fluorescent lamp, can be directly installed on the LED fluorescent lamp in the conventional fluorescent circuit for lamp.

Summary of the invention

Embodiment of the invention technical problem to be solved is, LED fluorescent lamp and fluorescent lamps connected connection circuit are provided, and to be implemented under the situation that does not change the conventional fluorescent peripheral circuit, directly uses LED fluorescent lamp replace fluorescent lamps.

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

Preferable, before described first bridge rectifier, be parallel with first inductance between two pins of described first end cap;

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

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

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

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

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

Preferable, LED fluorescent lamp of the present invention, the input of described first electric capacity and with pin that described input links to each other between series connection the 3rd inductance; The input of described second electric capacity and with pin that described input links to each other between series connection the 4th inductance.

In addition, the embodiment of the invention also provides a kind of fluorescent lamps connected connection 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 an end that exchanges input, a pin is connected the other end that exchanges input on first end cap of described fluorescent lamp, another pin on first end cap of described fluorescent lamp is connected an end of described starter base, pin on second end cap of described fluorescent lamp is connected the output of described Inductive ballast, another pin on second end cap of described fluorescent lamp is connected the other end of described starter base, on the described starter base starter is not installed.

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

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

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

In addition, the embodiment of the invention also provides another kind of fluorescent lamps connected connection 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 an end that exchanges input, a pin is connected the other end that exchanges input on first end cap of described fluorescent lamp, another pin on first end cap of described fluorescent lamp is connected an end of described starter base, pin on second end cap of described fluorescent lamp is connected the output of described Inductive ballast, another pin on second end cap of described fluorescent lamp is connected 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 described first switch element and described second switch element at least.

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

When described first switch element was controllable silicon, described silicon controlled trigger end was connected on the connecting line between described the 3rd electric capacity and described first resistance;

When described second switch element was controllable silicon, described silicon controlled trigger end was connected on the connecting line between described the 4th electric capacity and described second resistance.

Preferable, described be used for to described led light source group provide the circuit of constant current or constant voltage be resistance, transistor any.

It is perhaps, described that to be used for providing the circuit of constant current or constant voltage to described led light source group be the LED power supply driver.

Preferable, when described when being used for providing the circuit of constant current or constant voltage to be the LED power supply driver to described led light source group, at the front end of described LED lamp group, the output of described first bridge rectifier also is parallel with the circuit of the 5th resistance and the 3rd switch element series connection formation.

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

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

In addition, the embodiment of the invention also provides another kind of fluorescent lamps connected connection circuit, comprise the electric ballast in the fluorescent lamp circuit, also comprise in all LED fluorescent lamps that the embodiment of the invention provides any, two inputs of described electric ballast are connected to the two ends that exchange input, two pins on first end cap of described fluorescent lamp is connected first output of described electron rectifier simultaneously, and the two pins on second end cap of described fluorescent lamp is connected second output of described electron rectifier at the same time.

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

The LED fluorescent lamp that the embodiment of the invention provides is in series with first electric capacity between a pin of the input of described LED lamp group and described second end cap, between a pin of the output of described LED lamp group and described first end cap, be in series with second electric capacity, 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 first electric capacity and second electric capacity are adjusted the input characteristics of fluorescent lamp circuit, neither change the circuit structure of fluorescent lamp circuit in the time of can making the LED fluorescent lamp insert in the circuit of fluorescent lamp, the LED fluorescent lamp is normally lighted.In addition, adjust the embodiment of the invention first inductance also in parallel and second inductance for the input characteristics to fluorescent lamp circuit better.In addition, for the input characteristics to fluorescent lamp circuit is better adjusted, the embodiment of the invention on the basis of first inductance in parallel and second inductance, the circuit that forms by the 3rd electric capacity and first capacitances in series in parallel, and the circuit of connecting and forming in parallel by the 4th electric capacity and second resistance.In addition, for the input characteristics to fluorescent lamp circuit is better adjusted, the embodiment of the invention on the basis of first inductance in parallel and second inductance, also the output of described first inductance and with pin that described output links to each other between series connection the 5th electric capacity; The output of described second inductance and with pin that described output links to each other between series connection the 6th electric capacity.In addition, for the input characteristics to fluorescent lamp circuit is better adjusted, the circuit that the embodiment of the invention is formed by the 3rd electric capacity and the series connection of first resistance in parallel connection, and on the basis of the circuit that forms by the 4th electric capacity and the series connection of second resistance in parallel, the output of described first inductance and with pin that described output links to each other between connect one to make the described first inductance original state be first switch element of off-state; The output of described second inductance and with pin that described output links to each other between series connection one to make the described second inductance original state be the second switch element of off-state.In addition, for the input characteristics to fluorescent lamp circuit is better adjusted, the embodiment of the invention also is in series with the 7th electric capacity between described first inductance and described first switch element on the basis of series connection first switch element and second switch element; Between described second inductance and described second switch element, also be in series with the 8th electric capacity.In addition, to be used for providing the circuit of constant current or constant voltage to described led light source group be the LED power supply driver when described, when the peripheral circuit that inserts is the electron rectifier fluorescent lamp circuit, the output of described first bridge rectifier also is parallel with the circuit of the 5th resistance and the 3rd switch element series connection formation, this circuit can produce feedback current to circuit input end on described the 5th resistance, so that the input characteristics of the output characteristics of electron rectifier and LED fluorescent lamp is mated.Above-mentioned various LED fluorescent lamps are installed in the fluorescent lamps connected connection circuit of the embodiment of the invention, fluorescent lamps connected connection circuit is like this compared with existing fluorescent lamp circuit, circuit structure does not change, only be to have replaced traditional fluorescent lamp with the LED fluorescent lamp of the embodiment of the invention, can economize on resources greatly like this, user-friendly.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

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

Fig. 2 is the structural representation of existing electric ballast fluorescent lamp circuit;

Fig. 3 is existing a kind of LED fluorescent lamp peripheral circuit connected mode schematic diagram;

Fig. 4 is the internal circuit configuration schematic diagram of LED fluorescent lamp shown in Figure 3;

Fig. 5 is existing another kind of LED fluorescent lamp peripheral circuit connected mode schematic diagram;

Fig. 6 is the internal circuit configuration schematic diagram of LED fluorescent lamp shown in Figure 5;

Fig. 7 is existing another kind of LED fluorescent lamp peripheral circuit connected mode schematic diagram;

Fig. 8 is the internal circuit configuration schematic diagram of LED fluorescent lamp shown in Figure 7;

Fig. 9 is the peripheral circuit connected mode schematic diagram of existing another kind of LED fluorescent lamp;

Figure 10 is the internal circuit configuration schematic diagram of first embodiment of LED fluorescent lamp of the present invention;

Figure 11 is that LED daylight lamp circuit shown in Figure 10 is connected to the electrical block diagram in the Inductive ballast fluorescent lamp peripheral circuit shown in Figure 1;

Figure 12 is that LED daylight lamp circuit shown in Figure 10 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit shown in Figure 2;

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

Figure 14 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 15 is that LED daylight lamp circuit shown in Figure 13 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit shown in Figure 2;

Figure 16 is another structural representation of existing electric ballast fluorescent lamp circuit;

Figure 17 is that LED daylight lamp circuit shown in Figure 13 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit shown in Figure 16.

Figure 18 is the internal circuit configuration schematic diagram of the 3rd embodiment of LED fluorescent lamp of the present invention;

Figure 19 is that LED daylight lamp circuit shown in Figure 180 is connected to the electrical block diagram in the Inductive ballast fluorescent lamp peripheral circuit shown in Figure 1;

Figure 20 is that LED daylight lamp circuit shown in Figure 180 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit shown in Figure 2;

Figure 21 is the internal circuit configuration schematic diagram of the 4th 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 Inductive ballast fluorescent lamp peripheral circuit shown in Figure 1;

Figure 23 is that LED daylight lamp circuit shown in Figure 21 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit shown in Figure 2;

Figure 24 is the internal circuit configuration schematic diagram of the 5th embodiment of LED fluorescent lamp of the present invention;

Figure 25 is that LED daylight lamp circuit shown in Figure 24 is connected to the electrical block diagram in the Inductive ballast fluorescent lamp peripheral circuit shown in Figure 1;

Figure 26 is that LED daylight lamp circuit shown in Figure 24 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit shown in Figure 2;

Figure 27 is the internal circuit configuration schematic diagram of the 6th embodiment of LED fluorescent lamp of the present invention;

Figure 28 is that LED daylight lamp circuit shown in Figure 27 is connected to the electrical block diagram in the Inductive ballast fluorescent lamp peripheral circuit shown in Figure 1;

Figure 29 is that LED daylight lamp circuit shown in Figure 27 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit shown in Figure 2;

Figure 30 is the internal circuit configuration schematic diagram of the 7th embodiment of LED fluorescent lamp of the present invention;

Figure 31 is the internal circuit configuration schematic diagram of the 8th embodiment of LED fluorescent lamp of the present invention;

Figure 32 is the internal circuit configuration schematic diagram of the 9th embodiment of LED fluorescent lamp of the present invention;

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

Figure 34 is the internal circuit configuration schematic diagram of the 11 embodiment of LED fluorescent lamp of the present invention;

Figure 35 is the internal circuit configuration schematic diagram of the 12 embodiment of LED fluorescent lamp of the present invention;

Figure 36 is the internal circuit configuration schematic diagram of the 13 embodiment of LED fluorescent lamp of the present invention;

Figure 37 is the internal circuit configuration schematic diagram of the 14 embodiment of LED fluorescent lamp of the present invention;

Figure 38 is the internal circuit configuration schematic diagram of the 15 embodiment of LED fluorescent lamp of the present invention;

Figure 39 is the internal circuit configuration schematic diagram of the 16 embodiment of LED fluorescent lamp of the present invention;

Figure 40 is the internal circuit configuration schematic diagram of the 17 embodiment of LED fluorescent lamp of the present invention;

Figure 41 is the internal circuit configuration schematic diagram of the 18 embodiment of LED fluorescent lamp of the present invention;

Figure 42 is the internal circuit configuration schematic diagram of the 19 embodiment of LED fluorescent lamp of the present invention;

Figure 43 is the internal circuit configuration schematic diagram of the 20 embodiment of LED fluorescent lamp of the present invention.

The specific embodiment

Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described.

A kind of LED fluorescent lamp provided by the invention, comprise the LED fluorescent tube, described LED fluorescent tube comprises first end cap and second end cap, described first end cap and described second end cap comprise two pins respectively, in described LED fluorescent tube inside, be parallel with second bridge rectifier being parallel with between two pins of described first end cap between first bridge rectifier and two pins at described second end cap, the output parallel connection LED lamp group of described first bridge rectifier and described second bridge rectifier, described LED lamp group comprises the led light source group and is used for providing the circuit of constant current or constant voltage to described led light source group, between a pin of the input of described LED lamp group and described second end cap, be in series with first electric capacity, between a pin of the output of described LED lamp group and described first end cap, be in series with second electric capacity.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 10, 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 Figure 31 and shown in Figure 32.

As shown in figure 10, the internal circuit of LED fluorescent lamp of the present invention can comprise pin 1, pin 2, pin 3 and pin 4, in the specific implementation, described pin 1 and pin 2 can be positioned on first end cap of LED fluorescent lamp, and described pin 3 and pin 4 can be positioned on second end cap of LED fluorescent lamp.First bridge rectifier of forming by Q1-Q4 in parallel between pin 1 and pin 2, between the both positive and negative polarity of the output of first bridge rectifier of forming by Q1-Q4, connect a filter capacitor C9 (in the specific implementation, can not comprise filter capacitor C9), between pin 3 and pin 4, be parallel with second bridge rectifier of forming by Q5-Q8, between the both positive and negative polarity of the output of second bridge rectifier of forming by Q5-Q8, connect a filter capacitor C10 (in the specific implementation, can not comprise filter capacitor C10), as shown in Figure 10, the bridge rectifier between pin 1 and the pin 2, bridge rectifier between filter capacitor and pin 3 and the pin 4, filter capacitor is symmetrical structure.Further, be connected the LED lamp group of forming by circuit T1 that constant current or constant voltage are provided and led light source group (wherein D1, D2, D3.....Dn are the LED lamp) at the two ends of described filter capacitor C9 and filter capacitor C10, series capacitance C1 between the input of LED lamp group and pin 3, series capacitance C2 between the output of LED lamp group and pin 2.Provide the circuit T1 of constant current or constant voltage to can be in resistance, the transistor any in the specific implementation.

Figure 11 is that LED daylight lamp circuit shown in Figure 10 is connected to the electrical block diagram in the Inductive ballast fluorescent lamp peripheral circuit.Simultaneously, Figure 11 also is the structural representation of first embodiment of fluorescent lamps connected connection circuit of the present invention.As shown in figure 11, when LED daylight lamp circuit shown in Figure 10 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 input in the fluorescent lamp peripheral circuit and exchanges the AC input, the pin 3 of LED daylight lamp circuit is connected the output of described Inductive ballast, and 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 11, when receiving in the fluorescent lamp peripheral circuit, do not change the circuit structure of former fluorescent lamp peripheral circuit with LED shown in Figure 10 is fluorescent lamps connected.

Concrete, after exchanging AC input access civil power, 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, because the characteristic of capacitor C 1 and capacitor C 2, 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 big capacitive reactance, can think open circuit, therefore can not impact circuit.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, as shown in figure 11, the positive pole of described Rectified alternating current is last, 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 down into, this dc high-voltage is flowed through LED lamp D1, LED lamp D2.......LED lamp Dn to ground through T1, and the LED lamp is lighted.

Figure 12 is that LED daylight lamp circuit shown in Figure 10 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit.Simultaneously, Figure 12 has also formed the structural representation of second embodiment of fluorescent lamps connected connection circuit of the present invention.As shown in figure 12, present embodiment is replaced Inductive ballast with electric ballast.In traditional fluorescent lamp circuit, electric ballast is used to start fluorescent tube, it can 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 under the condition of low-power consumption, high power factor.It operates mainly in the high frequency state about 40KHZ.Concrete, as shown in figure 12, when the LED daylight lamp circuit among Figure 10 being connected in the electric ballast fluorescent lamp peripheral circuit shown in Figure 2, the pin 1 of LED fluorescent lamp and pin 2 are connected to an output of electric ballast simultaneously, pin 3, pin 4 is connected to another output of electric ballast simultaneously, the input of electric ballast is connected to and exchanges the AC input, in the specific implementation, when exchanging AC input incoming transport electricity, according to the course of work of electric ballast as can be known, it at first needs to provide a preheat curent to filament, start high pressure then and trigger the conducting of LDE lamp, and in the present embodiment, capacitor C 1 and capacitor C 2 will influence the output characteristics of electric ballast, concrete, capacitor C 1 and capacitor C 2 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, normally the LED lamp is lighted to be implemented in.

As shown in figure 31, it replaces the circuit T1 that constant current or constant voltage are provided shown in Figure 10 with power supply driver.In the specific implementation, when adopting daylight lamp circuit shown in Figure 31, its mode that inserts the mode of Inductive ballast fluorescent lamp circuit shown in Figure 1 and insert electric ballast fluorescent lamp circuit shown in Figure 2 and Figure 11 and connecting circuit shown in Figure 12 are identical, do not give unnecessary details at this.

In addition, shown in Figure 32 (having removed capacitor C 9 and capacitor C 10 among Figure 31), can also on the basis of daylight lamp circuit shown in Figure 31, increase the series circuit that forms by resistance R x and starter S1.As Figure 32, at the front end of described LED lamp group, the output of described bridge rectifier also is parallel with the circuit of resistance R x and starter S1 series connection formation.After employing daylight lamp circuit shown in Figure 32 inserts the electric ballast fluorescent lamp circuit in mode shown in Figure 12, the output of electron rectifier is through behind the bridge rectifier, can between the both positive and negative polarity that the direct current of bridge rectifier is exported, produce a high voltage, at this moment, the conducting that is triggered of starter S1 moment, be short-circuited, having electric current on resistance R x flows through, this electric current can feed back to the input of electric ballast, make electron rectifier change output characteristics, thus the input characteristics of coupling LED fluorescent lamp.In the specific implementation, the element of connecting with resistance R x is not limited to starter, also can be switch elements such as controllable silicon, triode, relay, as long as these switch elements can satisfy in LED daylight lamp circuit access electric ballast fluorescent lamp circuit, between the both positive and negative polarity of the output of bridge rectifier, can produce certain voltage, after this voltage can make these switch elements moments be switched on, produce current flowing resistance Rx and get final product.

Another kind of LED fluorescent lamp provided by the invention, comprise the LED fluorescent tube, described LED fluorescent tube comprises first end cap and second end cap, described first end cap and described second end cap comprise two pins respectively, in described LED fluorescent tube inside, be parallel with second bridge rectifier being parallel with between two pins of described first end cap between first bridge rectifier and two pins at described second end cap, before described first bridge rectifier, be parallel with first inductance between two pins of described first end cap; Before described second bridge rectifier, be parallel with second inductance between two pins of described second end cap; The output parallel connection LED lamp group of described first bridge rectifier and described second bridge rectifier, described LED lamp group comprises the led light source group and is used for providing the circuit of constant current or constant voltage to described led light source group, between a pin of the input of described LED lamp group and described second end cap, be in series with first electric capacity, between a pin of the output of described LED lamp group and described first end cap, be in series with second electric capacity.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 as Figure 33 and shown in Figure 34.

As shown in figure 13, the internal circuit of LED fluorescent lamp of the present invention can be on the basis of circuit shown in Figure 10, before first bridge rectifier that Q1-Q4 forms, first inductance L 1 in parallel between described pin 1 and pin 2, before second bridge rectifier that Q5-Q8 forms, second inductance L 2 in parallel between described pin 3 and pin 4.The function that circuit shown in Figure 13 and circuit shown in Figure 10 are realized is basic identical, it still can directly be linked into traditional Inductive ballast fluorescent lamp circuit shown in Figure 1 or directly insert in the conventional electronic ballast fluorescent lamp circuit shown in Figure 2, meanwhile, the LED fluorescent lamp of present embodiment also can directly insert in the electric ballast fluorescent lamp circuit shown in Figure 16.After effective cooperation of present embodiment by inductance L 1, inductance L 2, capacitor C 1, capacitor C 2, the Inductive ballast in the conventional fluorescent circuit for lamp or the output characteristics of electric ballast and the input characteristics of LED fluorescent lamp are mated more, improve the illumination effect of LED fluorescent lamp, strengthen the stability of entire circuit.

Figure 14 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.Simultaneously, Figure 14 also is the structural representation of the 3rd embodiment of fluorescent lamps connected connection circuit of the present invention.As shown in figure 14, when LED daylight lamp circuit shown in Figure 13 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 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, as shown in figure 14, on the described starter base starter is not installed.As shown in Figure 14, when receiving in the fluorescent lamp peripheral circuit, do not change the circuit structure of former fluorescent lamp peripheral circuit with LED shown in Figure 13 is fluorescent lamps connected.In Figure 14, 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 big capacitive reactance, can think open circuit, inductance L 1 and inductance L 2 can be thought short circuit, therefore, and therefore, can think that the live wire (perhaps zero line) of civil power is to import simultaneously from pin 1 and pin 2, and can think that the zero line (perhaps live wire) of civil power is to import 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, as shown in figure 14, the positive pole of described Rectified alternating current is last, and negative pole is following, after the filtering of Rectified alternating current through filtering capacitor C 9 and filter capacitor C10, change comparatively level and smooth dc high-voltage into, this dc high-voltage is flowed through LED lamp D1, LED lamp D2.......LED lamp Dn to ground through T1, and the LED lamp is lighted.

Figure 15 is that LED daylight lamp circuit shown in Figure 13 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit.Simultaneously, Figure 15 has also formed the structural representation of the 4th embodiment of fluorescent lamps connected connection circuit of the present invention.As shown in figure 15, present embodiment is replaced Inductive ballast with electric ballast.In traditional fluorescent lamp circuit, electric ballast is used to start fluorescent tube, it can 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 under the condition of low-power consumption, high power factor.It operates mainly in the high frequency state about 40KHZ.Concrete, as shown in figure 15, when the LED daylight lamp circuit among Figure 13 being connected in the electric ballast fluorescent lamp peripheral circuit shown in Figure 2, an output, pin 3, the pin 4 that the pin 1 of LED fluorescent lamp and pin 2 are connected to electric ballast simultaneously is connected to another output of electric ballast simultaneously, and the input of electric ballast is connected to and exchanges the AC input.In the specific implementation, when exchanging AC input incoming transport electricity, the inductance L 1 of 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 to be implemented in.

Figure 17 is that LED daylight lamp circuit shown in Figure 13 is connected to another electrical block diagram in the electric ballast fluorescent lamp peripheral circuit.As shown in figure 17, when the LED daylight lamp circuit among Figure 13 being connected in the electric ballast fluorescent lamp peripheral circuit shown in Figure 16, 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, inductance L 1, inductance L 2, capacitor C 1, capacitor C 2 will influence 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 to be implemented in.

As shown in figure 33, it replaces the circuit T1 that constant current or constant voltage are provided shown in Figure 13 with power supply driver.In the specific implementation, when adopting daylight lamp circuit shown in Figure 33, its mode that inserts the mode of Inductive ballast fluorescent lamp circuit and insert the electric ballast fluorescent lamp circuit and Figure 14, Figure 15 and connecting circuit shown in Figure 17 are identical, do not give unnecessary details at this.

In addition, shown in Figure 34 (having removed capacitor C 9 and capacitor C 10 among Figure 33), can also on the basis of daylight lamp circuit shown in Figure 33, increase the series circuit that forms by resistance R x and starter S1.The effect of Rx among Figure 34 and starter S1 with and alternative elements and Figure 32 similar, do not give unnecessary details at this.

Another kind of LED fluorescent lamp provided by the invention, comprise the LED fluorescent tube, described LED fluorescent tube comprises first end cap and second end cap, described first end cap and described second end cap comprise two pins respectively, in described LED fluorescent tube inside, between two pins of described first end cap, be parallel with first inductance successively, the circuit and first bridge rectifier that form by the series connection of the 3rd electric capacity and first resistance, between two pins of described second end cap, be parallel with second inductance successively, the circuit and second bridge rectifier that form by the series connection of the 4th electric capacity and second resistance, the output parallel connection LED lamp group of described first bridge rectifier and described second bridge rectifier, described LED lamp group comprises the led light source group and is used for providing the circuit of constant current or constant voltage to described led light source group, between a pin of the input of described LED lamp group and described second end cap, be in series with first electric capacity, between a pin of the output of described LED lamp group and described first end cap, be in series with second electric capacity.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 18, 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 Figure 35 and shown in Figure 36.

As shown in figure 18, the internal circuit of LED fluorescent lamp of the present invention can be on the basis of circuit shown in Figure 13, the circuit that forms by capacitor C 3 and resistance R 3 series connection in parallel between pin 1 and pin 2, the circuit that forms by capacitor C 4 and resistance R 4 series connection in parallel between pin 3 and pin 4.The function that circuit shown in Figure 180 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 the conventional electronic ballast fluorescent lamp circuit shown in Figure 2.After effective cooperation of present embodiment by inductance L 1, capacitor C 3, resistance R 3, inductance L 2, capacitor C 4, capacitor C 1, capacitor C 2 and resistance R 4, the Inductive ballast in the conventional fluorescent circuit for lamp or the output characteristics of electric ballast and the input characteristics of LED fluorescent lamp are mated more, improve the illumination effect of LED fluorescent lamp, strengthen the stability of entire circuit.

Figure 19 is that LED daylight lamp circuit shown in Figure 180 is connected to the electrical block diagram in the Inductive ballast fluorescent lamp peripheral circuit.Simultaneously, Figure 19 also is the structural representation of the 5th embodiment of fluorescent lamps connected connection circuit of the present invention.As shown in figure 19, when being connected to LED daylight lamp circuit shown in Figure 180 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 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 19, do not connect starter on the described starter base Y.As shown in Figure 19, when receiving in the fluorescent lamp peripheral circuit, do not change the circuit structure of former fluorescent lamp peripheral circuit with LED shown in Figure 180 is fluorescent lamps connected.In Figure 19, under the effect of Inductive ballast fluorescent lamp circuit civil power low frequency (being generally 50-60HZ), capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4 show very big capacitive reactance, can think open circuit, inductance L 1 and inductance L 2 can be thought short circuit, therefore, can think that the live wire (perhaps zero line) of civil power is to import simultaneously from pin 1 and pin 2, and can think that the zero line (perhaps live wire) of civil power is to import 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, as shown in figure 19, the positive pole of described Rectified alternating current is last, and negative pole is following, after the filtering of Rectified alternating current through filtering capacitor C 9 and filter capacitor C10, change comparatively level and smooth dc high-voltage into, this dc high-voltage is flowed through LED lamp D1, LED lamp D2.......LED lamp Dn to ground through T1, and the LED lamp is lighted.

Figure 20 is that LED daylight lamp circuit shown in Figure 180 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit.Simultaneously, Figure 20 has also formed the structural representation of the 6th embodiment of fluorescent lamps connected connection circuit of the present invention.As shown in figure 20, when the LED daylight lamp circuit among Figure 18 being connected in Fig. 2 electric 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, capacitor C 1, after effective cooperation of capacitor C 2 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, normally the LED lamp is lighted to be implemented in.

Same, the LED fluorescent lamp of present embodiment also can be used for electric ballast fluorescent lamp circuit shown in Figure 16.Its access way is identical with Figure 17, does not give unnecessary details at this.

As shown in figure 35, it replaces the circuit T1 that constant current or constant voltage are provided shown in Figure 18 with power supply driver.In the specific implementation, when adopting daylight lamp circuit shown in Figure 35, its mode that inserts the mode of Inductive ballast fluorescent lamp circuit and insert the electric ballast fluorescent lamp circuit and Figure 19, Figure 20 and connecting circuit shown in Figure 17 are identical, do not give unnecessary details at this.

In addition, shown in Figure 36 (having removed capacitor C 9 and capacitor C 10 among Figure 35), can also on the basis of daylight lamp circuit shown in Figure 35, increase the series circuit that forms by resistance R x and starter S1.The effect of Rx among Figure 36 and starter S1 with and alternative elements and Figure 32 similar, do not give unnecessary details at this.

Another kind of LED fluorescent lamp provided by the invention, comprise the LED fluorescent tube, described LED fluorescent tube comprises first end cap and second end cap, described first end cap and described second end cap comprise two pins respectively, in described LED fluorescent tube inside, between two pins of described first end cap, be parallel with the circuit and first bridge rectifier that first inductance and the 5th capacitances in series form, between two pins of described second end cap, be parallel with the circuit and second bridge rectifier that second inductance and the 6th capacitances in series form, the output parallel connection LED lamp group of described first bridge rectifier and described second bridge rectifier, described LED lamp group comprises the led light source group and is used for providing the circuit of constant current or constant voltage to described led light source group, between a pin of the input of described LED lamp group and described second end cap, be in series with first electric capacity, between a pin of the output of described LED lamp group and described first end cap, be in series with second electric capacity.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 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 as Figure 37 and shown in Figure 38.

As shown in figure 21, the internal circuit of LED fluorescent lamp of the present invention can be on the basis of circuit shown in Figure 13, 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 circuit shown in Figure 21 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 the conventional electronic ballast fluorescent lamp circuit shown in Figure 2.After effective cooperation of present embodiment by inductance L 1, capacitor C 5, inductance L 2, capacitor C 6, capacitor C 1, capacitor C 2, the Inductive ballast in the conventional fluorescent circuit for lamp or the output characteristics of electric ballast and the input characteristics of LED fluorescent lamp are mated more, improve the illumination effect of LED fluorescent lamp, strengthen the stability of entire circuit.

Figure 22 is that LED daylight lamp circuit shown in Figure 21 is connected to the electrical block diagram in the Inductive ballast fluorescent lamp peripheral circuit.Simultaneously, Figure 22 also is the structural representation of the 7th embodiment of fluorescent lamps connected connection circuit of the present invention.As shown in figure 22, when being connected to LED daylight lamp circuit shown in Figure 21 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 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 22, do not connect starter on the described starter base Y.As shown in Figure 22, when receiving in the fluorescent lamp peripheral circuit, do not change the circuit structure of former fluorescent lamp peripheral circuit with LED shown in Figure 21 is fluorescent lamps connected.In Figure 22, under the effect of Inductive ballast fluorescent lamp circuit civil power low frequency (being generally 50-60HZ), capacitor C 1, capacitor C 2, capacitor C 5, capacitor C 6 shows very big capacitive reactance, can think open circuit, inductance L 1 and inductance L 2 can be thought short 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, as shown in figure 22, the positive pole of described Rectified alternating current is last, 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 down into, this dc high-voltage is through the T1 LED lamp D1 that flows through, LED lamp D2.......LED lamp Dn is lighted the LED lamp to ground.

Figure 23 is that LED daylight lamp circuit shown in Figure 21 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit.Simultaneously, Figure 23 has also formed the structural representation of the 8th embodiment of fluorescent lamps connected connection circuit of the present invention.As shown in figure 23, when the LED daylight lamp circuit among Figure 21 being connected in the electric ballast fluorescent lamp peripheral circuit shown in Figure 2, an output, pin 3, the pin 4 that the pin 1 of LED fluorescent lamp and pin 2 are connected to electric ballast simultaneously is connected to another output of electric ballast simultaneously, and the input of electric ballast is connected to and exchanges the AC input.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, capacitor C 1 and 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 to be implemented in.

As shown in figure 37, 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 37, its mode that inserts the mode of Inductive ballast fluorescent lamp circuit and insert the electric ballast fluorescent lamp circuit and Figure 22, Figure 23 and connecting circuit shown in Figure 17 are identical, do not give unnecessary details at this.

In addition, shown in Figure 38 (having removed capacitor C 9 and capacitor C 10 among Figure 37), can also on the basis of daylight lamp circuit shown in Figure 37, increase the series circuit that forms by resistance R x and starter S1.The effect of Rx among Figure 38 and starter S1 with and alternative elements and Figure 32 similar, do not give unnecessary details at this.

Another kind of LED fluorescent lamp provided by the invention, comprise the LED fluorescent tube, described LED fluorescent tube comprises first end cap and second end cap, described first end cap and described second end cap comprise two pins respectively, in described LED fluorescent tube inside, between two pins of described first end cap, be parallel with the circuit that the series connection of first inductance and first switch element forms, the circuit and first bridge rectifier that the 3rd electric capacity and the series connection of first resistance form, between two pins of described second end cap, be parallel with the circuit that the series connection of second inductance and second switch element forms, the circuit and second bridge rectifier that the 4th electric capacity and the series connection of second resistance form, the output parallel connection LED lamp group of described first bridge rectifier and described second bridge rectifier, described LED lamp group comprises the led light source group and is used for providing the circuit of constant current or constant voltage to described led light source group, between a pin of the input of described LED lamp group and described second end cap, be in series with first electric capacity, between a pin of the output of described LED lamp group and described first end cap, be in series with second electric capacity.In the specific implementation, described switch element original state is an off-state.In the specific implementation, described first switch element and described second switch element can be in controllable silicon, photoelectrical coupler, relay and the transistor any.When described first switch element and/or described second switch element are controllable silicon, described silicon controlled trigger end as first switch element is connected on the connecting line between described the 3rd electric capacity and described first 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 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 24, 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 Figure 39 and shown in Figure 40.

As shown in figure 24, the internal circuit of LED fluorescent lamp of the present invention can be on the basis of circuit shown in Figure 180, a controllable silicon T2 connects between inductance L 1 and pin 2, the trigger end G of described controllable silicon T2 is connected between capacitor C 3 and the resistance R 3, the controllable silicon T3 that connects 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 LED fluorescent lamp of circuit shown in Figure 24 and circuit shown in Figure 10 is realized is basic identical, it still can directly be linked in traditional Inductive ballast fluorescent lamp circuit shown in Figure 1 or the conventional electronic ballast fluorescent lamp circuit shown in Figure 2, and when the LED fluorescent lamp that adopts present embodiment inserted the Inductive ballast fluorescent lamp circuit, the starter on the described Inductive ballast fluorescent lamp circuit can keep.After effective cooperation of present embodiment by inductance L 1, capacitor C 3, resistance R 3, inductance L 2, capacitor C 4, resistance R 4, controllable silicon T2, controllable silicon T3, capacitor C 1, capacitor C 2, the Inductive ballast in the conventional fluorescent circuit for lamp or the output characteristics of electric ballast and the input characteristics of LED fluorescent lamp are mated more, improve the illumination effect of LED fluorescent lamp, strengthen the stability of entire circuit.

Figure 25 is that LED daylight lamp circuit shown in Figure 24 is connected to the electrical block diagram in the Inductive ballast fluorescent lamp peripheral circuit.Simultaneously, Figure 25 also is the structural representation of the 9th embodiment of fluorescent lamps connected connection circuit of the present invention.As shown in figure 25, when being connected to LED daylight lamp circuit shown in Figure 24 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 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, on the described starter base Y starter S is installed.As shown in Figure 25, when receiving in the fluorescent lamp peripheral circuit, do not change the circuit structure of former fluorescent lamp peripheral circuit with LED shown in Figure 24 is fluorescent lamps connected.

Concrete, as Figure 25, after alternating current AC input inserts civil power, 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, and capacitor C 3 and capacitor C 4 can produce very big capacitive reactance (in the specific implementation, can realizing by the capacitance of adjusting capacitor C 3 and capacitor C 4) to low frequency (50-60HZ) civil power in the present embodiment, the voltage drop that produces on resistance R 3 and resistance R 4 is very little like this, is not enough to trigger controllable silicon T2 and controllable silicon T3 conducting.Therefore, in the present embodiment, the live wire of civil power and zero line can not arrive the two ends of starter S by pin 2 and pin 4, therefore, as shown in figure 25, also can not impact the luminous of circuit even present embodiment keeps starter S.Meanwhile, the series loop that capacitor C 3, resistance R 3 form in the present embodiment, and the series loop that forms of capacitor C 4, resistance R 4 can adjust its electric current of flowing through, and such adjustment can prevent that also the LED fluorescent lamp from avoiding being subjected to starter to influence and produce flicker.

Figure 26 is that LED daylight lamp circuit shown in Figure 24 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit.Simultaneously, Figure 26 has also formed the structural representation of the tenth embodiment of fluorescent lamps connected connection circuit of the present invention.As shown in figure 26, when the LED daylight lamp circuit among Figure 19 being connected in the electric ballast fluorescent lamp peripheral circuit shown in Figure 2, an output, pin 3, the pin 4 that the pin 1 of LED fluorescent lamp and pin 2 are connected to electric ballast simultaneously is connected to another output of electric ballast simultaneously, and the input of electric ballast is connected to and exchanges the AC input.

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 imported 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 high more, the capacitive reactance that electric capacity produces is more little, 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 bigger 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 under 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 promptly is equivalent to the circuit of the 3rd embodiment shown in Figure 180.

Accordingly, the LED fluorescent lamp in the present embodiment also can directly insert in the electric ballast fluorescent lamp circuit shown in Figure 16, and its access way is identical with Figure 17, does not give unnecessary details at this.

As shown in figure 39, it replaces the circuit T1 that constant current or constant voltage are provided shown in Figure 24 with power supply driver.In the specific implementation, when adopting daylight lamp circuit shown in Figure 39, its mode that inserts the mode of Inductive ballast fluorescent lamp circuit and insert the electric ballast fluorescent lamp circuit and Figure 25, Figure 26 and connecting circuit shown in Figure 17 are identical, do not give unnecessary details at this.

In addition, shown in Figure 40 (having removed capacitor C 9 and capacitor C 10 among Figure 39), can also on the basis of daylight lamp circuit shown in Figure 39, increase the series circuit that forms by resistance R x and starter S1.The effect of Rx among Figure 40 and starter S1 with and alternative elements and Figure 32 similar, do not give unnecessary details at this.

Another kind of LED fluorescent lamp provided by the invention, comprise the LED fluorescent tube, described LED fluorescent tube comprises first end cap and second end cap, described first end cap and described second end cap comprise two pins respectively, in described LED fluorescent tube inside, between two pins of described first end cap, be parallel with first inductance, the circuit that the 7th electric capacity and the first switch element three connect and form, the circuit and first bridge rectifier that the 3rd electric capacity and first resistance are connected and formed, between two pins of described second end cap, be parallel with second inductance, the circuit that the 8th electric capacity and second switch element three connect and form, the circuit and second bridge rectifier that the 4th electric capacity and second resistance are connected and formed, the output parallel connection LED lamp group of described first bridge rectifier and described second bridge rectifier, described LED lamp group comprises the led light source group and is used for providing the circuit of constant current or constant voltage to described led light source group, between a pin of the input of described LED lamp group and described second end cap, be in series with first electric capacity, between a pin of the output of described LED lamp group and described first end cap, be in series with second electric capacity.In the specific implementation, described switch element original state is an off-state.In the specific implementation, described first switch element and described second switch element can be in controllable silicon, photoelectrical coupler, relay and the transistor any.When described first switch element and/or described second switch element are controllable silicon, described silicon controlled trigger end as first switch element is connected on the connecting line between described the 3rd electric capacity and described first 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 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 27, 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 Figure 41 and shown in Figure 42.

As Figure 27, the internal circuit of LED fluorescent lamp of the present invention can be on the basis of circuit shown in Figure 24, series connection one capacitor C 7 between inductance L 1 and controllable silicon T2, series connection one capacitor C 8 between inductance L 2 and controllable silicon T3.The effect of capacitor C 7 and capacitor C 8 also is a coupling of further improving the input characteristics of the output characteristics of Inductive ballast or electric ballast and LED fluorescent lamp.The function that circuit shown in Figure 27 and circuit shown in Figure 10 are realized is basic identical, it still can directly be linked in traditional Inductive ballast fluorescent lamp circuit shown in Figure 1 or the conventional electronic ballast fluorescent lamp circuit shown in Figure 2, and when the LED fluorescent lamp that adopts present embodiment inserted the Inductive ballast fluorescent lamp circuit, the starter on the described Inductive ballast fluorescent lamp circuit can keep.

Figure 28 is that LED daylight lamp circuit shown in Figure 27 is connected to the electrical block diagram in the Inductive ballast fluorescent lamp peripheral circuit.Simultaneously, Figure 28 also is the structural representation of the 11 embodiment of fluorescent lamps connected connection circuit of the present invention.As shown in figure 28, when being connected to LED daylight lamp circuit shown in Figure 27 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 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 28, on the described starter base Y starter S is installed.As shown in Figure 28, when receiving in the fluorescent lamp peripheral circuit, do not change the circuit structure of former fluorescent lamp peripheral circuit with LED shown in Figure 27 is fluorescent lamps connected.Under the effect of Inductive ballast fluorescent lamp circuit civil power low frequency (being generally 50-60HZ), Figure 28 can be equivalent to circuit shown in Figure 11.

Figure 29 is that LED daylight lamp circuit shown in Figure 27 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit.Simultaneously, Figure 29 has also formed the structural representation of the 12 embodiment of fluorescent lamps connected connection circuit of the present invention.As shown in figure 29, when the LED daylight lamp circuit among Figure 22 being connected in the electric ballast fluorescent lamp peripheral circuit shown in Figure 2, an output, pin 3, the pin 4 that the pin 1 of LED fluorescent lamp and pin 2 are connected to electric ballast simultaneously is connected to another output of electric ballast simultaneously, and the input of electric ballast is connected to and exchanges the AC input.

Accordingly, the LED fluorescent lamp of present embodiment also can directly insert in the electric ballast fluorescent lamp circuit shown in Figure 16, and its access way is identical with Figure 17, does not give unnecessary details at this.

As shown in figure 41, it replaces the circuit T1 that constant current or constant voltage are provided shown in Figure 27 with power supply driver.In the specific implementation, when adopting daylight lamp circuit shown in Figure 41, its mode that inserts the mode of Inductive ballast fluorescent lamp circuit and insert the electric ballast fluorescent lamp circuit and Figure 28, Figure 29 and connecting circuit shown in Figure 17 are identical, do not give unnecessary details at this.

In addition, shown in Figure 42 (having removed capacitor C 9 and capacitor C 10 among Figure 41), can also on the basis of daylight lamp circuit shown in Figure 41, increase the series circuit that forms by resistance R x and starter S1.The effect of Rx among Figure 42 and starter S1 with and alternative elements and Figure 32 similar, do not give unnecessary details at this.

Another kind of LED fluorescent lamp provided by the invention, comprise the LED fluorescent tube, described LED fluorescent tube comprises first end cap and second end cap, described first end cap and described second end cap comprise two pins respectively, in described LED fluorescent tube inside, be parallel with second inductance and second bridge rectifier being parallel with between two pins of described first end cap between first inductance and first bridge rectifier and two pins at described second end cap, the output parallel connection LED lamp group of described first bridge rectifier and described second bridge rectifier, described LED lamp group comprises the led light source group and is used for providing the circuit of constant current or constant voltage to described led light source group, between a pin of the input of described LED lamp group and described second end cap, be in series with first electric capacity and the 3rd inductance, between a pin of the output of described LED lamp group and described first end cap, be in series with second electric capacity and the 4th inductance.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 3rd inductance and the 4th inductance in the present embodiment also is better the Inductive ballast in traditional Inductive ballast fluorescent lamp circuit and the traditional electric ballast fluorescent lamp circuit and the output characteristics of electric ballast and the input characteristics of LED daylight are mated.

In Figure 30, series inductance L3 before the capacitor C 1, series inductance L4 before the capacitor C 2.

In Figure 43, remove capacitor C 9 and the capacitor C 10 among Figure 30, comprised the series circuit that Rx and S1 form.

In the specific implementation, the inductance L 3 of present embodiment and inductance L 4 can be added among other embodiment of LED fluorescent lamp of the present invention equally.

Above disclosed is preferred embodiment of the present invention only, can not limit the present invention's interest field certainly with this, and therefore the equivalent variations of doing according to claim of the present invention still belongs to the scope that the present invention is contained.

Claims

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

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

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

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

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

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

The output of described first inductance and with pin that described output links to each other between series connection the 5th electric capacity;

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

The output of described first inductance and with pin that described output links to each other between series connection one to make the described first inductance original state be first switch element of off-state;

The output of described second inductance and with pin that described output links to each other between series connection one to make the described second inductance original state be the second switch element of off-state.

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

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

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

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

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

The input of described first electric capacity and with pin that described input links to each other between series connection the 3rd inductance;

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

9. as each described LED fluorescent lamp among the claim 1-7, it is characterized in that, described be used for to described led light source group provide the circuit of constant current or constant voltage be resistance, transistor, LED power supply driver any.

10. LED fluorescent lamp as claimed in claim 9, it is characterized in that, when described when being used for providing the circuit of constant current or constant voltage to be the LED power supply driver to described led light source group, at the front end of described LED lamp group, the output of described first bridge rectifier also is parallel with the circuit of the 5th resistance and the 3rd switch element series connection formation.

11. LED fluorescent lamp as claimed in claim 10 is characterized in that, described the 3rd switch element comprises in starter, controllable silicon, triode, relay, the Zener diode any.

12. as each described LED fluorescent lamp among the claim 1-7, it is characterized in that, at the two ends of described LED lamp group, the output of described first bridge rectifier is parallel with first filter capacitor, and the output of described second bridge rectifier is parallel with second filter capacitor.

13. fluorescent lamps connected connection circuit, comprise Inductive ballast and starter base in the fluorescent lamp circuit, it is characterized in that, also comprise as claim 1-4, each described LED fluorescent lamp in 8, the input of described Inductive ballast is connected an end that exchanges input, a pin is connected the other end that exchanges input on first end cap of described fluorescent lamp, another pin on first end cap of described fluorescent lamp is connected an end of described starter base, pin on second end cap of described fluorescent lamp is connected the output of described Inductive ballast, another pin on second end cap of described fluorescent lamp is connected the other end of described starter base, on the described starter base starter is not installed.

14. fluorescent lamps connected connection circuit, comprise Inductive ballast and starter base in the fluorescent lamp circuit, it is characterized in that, also comprise as each described LED fluorescent lamp among the claim 5-7, the input of described Inductive ballast is connected an end that exchanges input, a pin is connected the other end that exchanges input on first end cap of described fluorescent lamp, another pin on first end cap of described fluorescent lamp is connected an end of described starter base, pin on second end cap of described fluorescent lamp is connected the output of described Inductive ballast, another pin on second end cap of described fluorescent lamp is connected the other end of described starter base, and described starter base is equipped with starter.

15. fluorescent lamps connected connection circuit, comprise the electric ballast in the fluorescent lamp circuit, it is characterized in that, also comprise as each described LED fluorescent lamp among the claim 1-8, two inputs of described electric ballast are connected to the two ends that exchange input, two pins on first end cap of described fluorescent lamp is connected first output of described electron rectifier simultaneously, and the two pins on second end cap of described fluorescent lamp is connected second output of described electron rectifier at the same time.