CN102155646B - Light-emitting diode (LED) fluorescent lamp and connecting circuit thereof - Google Patents
Light-emitting diode (LED) fluorescent lamp and connecting circuit thereof Download PDFInfo
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- CN102155646B CN102155646B CN2010105792070A CN201010579207A CN102155646B CN 102155646 B CN102155646 B CN 102155646B CN 2010105792070 A CN2010105792070 A CN 2010105792070A CN 201010579207 A CN201010579207 A CN 201010579207A CN 102155646 B CN102155646 B CN 102155646B
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Abstract
The embodiment of the invention discloses a light-emitting diode (LED) fluorescent lamp and a connecting circuit thereof. The LED fluorescent lamp comprises an LED fluorescent tube; the LED fluorescent tube comprises a first end cap and a second end cap, which comprise two pins respectively; a first bridge rectifier circuit is parallelly connected between the two pins of the first end cap; a second bridge rectifier circuit is parallelly connected between the two pins of the second end cap; the output end of the first bridge rectifier circuit and the output end of the second bridge rectifier circuit are parallelly connected with an LED lamp group which comprises an LED light source group and a circuit for supplying constant current and constant voltage. A first inductor is parallelly connected between the input end of the LED light source group and one pin of the second end cap; and a second inductor is serially connected between the output end of the LED light source group and one pin of the first end cap. By the invention, the LED fluorescent lamp can be used for directly replacing a fluorescent lamp under the condition of no change of a peripheral circuit of the conventional fluorescent lamp.
Description
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 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 imported two pin input end of an end cap of fluorescent lamp simultaneously, and another road direct current signal is imported two pin input end of another end cap of fluorescent lamp simultaneously.
Aspect light efficiency, fluorescent lamp is superior to 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 design with LED be the basis fluorescent lamp to replace traditional straight tube fluorescent lamp or circline.
At present, common LED fluorescent tube comprises following several kinds:
Fig. 4 and shown in Figure 5 be a kind of LED fluorescent lamp and the circuit diagram thereof that the most generally uses at present; Like Fig. 4 and shown in Figure 5; The power supply driver that comprises a plurality of led light sources and driving LED light source in LED fluorescent-lamp tube inside, civil power gets into from the two ends of fluorescent tube, and this LED fluorescent lamp is after an end of fluorescent tube inserts lamp socket and energising; It is also charged that the other end does not insert the part of lamp socket, is easy to generate potential safety hazard.
For overcoming the defective of Fig. 4 and fluorescent tube shown in Figure 5, Fig. 6 and fluorescent tube shown in Figure 7 have been designed at present.Like Fig. 6 and shown in Figure 7, in this prior art, comprise 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 respectively to two LED fluorescent lamps statements based on collusion.Though can solve potential safety hazard like this, increase the cost of making fluorescent tube.
In addition, for overcoming the defective of Fig. 4 and fluorescent tube shown in Figure 5, Fig. 8 and fluorescent tube shown in Figure 9 have also been designed at present.Like Fig. 8 and shown in Figure 9, the civil power of this prior art is only imported from an end of LED fluorescent tube, and the other end is vacant.
In addition, Figure 10 is another kind of more common LED fluorescent lamp design, and this scheme moves on to the LED power supply driver outside of fluorescent-lamp tube.Import from the two ends of LED fluorescent-lamp tube respectively behind the driving power output dc low-voltage electricity.
All there is following technological deficiency in foregoing several frequently seen LED fluorescent lamp design:
Above-mentioned various LED fluorescent lamp all can not be directly installed in traditional fluorescent lamp peripheral circuit shown in Figure 1 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 change the structure of said fluorescent lamp peripheral circuit.
Because fluorescent lamp uses in life in a large number; Special support, lamp panel and the peripheral circuit that is fluorescent lamp designed 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; Said LED fluorescent tube comprises first end cap and second end cap; Said first end cap and said second end cap comprise two pins respectively; Inner at said LED fluorescent tube; Between two pins of said first end cap, be parallel with first bridge rectifier and be parallel with second bridge rectifier at two pins of said second end cap, the output parallel connection LED lamp group of said first bridge rectifier and said second bridge rectifier, said LED lamp group comprise led light source group and the circuit that is used for providing constant current or constant voltage to said led light source group; Between a pin of the input of said LED lamp group and said second end cap, be in series with first inductance, between a pin of the output of said LED lamp group and said first end cap, be in series with second inductance.
Preferable, before said first bridge rectifier, be parallel with the 3rd inductance between two pins of said first end cap;
Before said second bridge rectifier, be parallel with the 4th inductance between two pins of said second end cap.
Preferable, after said the 3rd inductance, before said first bridge rectifier, also be parallel with the circuit that forms by first electric capacity and the series connection of first resistance between two pins of said first end cap;
After said the 4th inductance, before said second bridge rectifier, also be parallel with the circuit that forms by second electric capacity and the series connection of second resistance between two pins of said second end cap.
Perhaps, series connection the 5th electric capacity between the pin of said the 3rd inductance and first end cap that is connected said second inductance; Series connection the 6th electric capacity between the pin of said the 4th inductance and second end cap that is not connected said first inductance.
Preferable, LED fluorescent lamp of the present invention, series connection the 7th electric capacity between the pin of said first inductance and second end cap that is connected said first inductance;
Series connection the 8th electric capacity between the output of said second inductance and the LED lamp group that is connected said second 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; Comprise that also in the aforesaid LED fluorescent lamp any, the input of said Inductive ballast are connected an end that exchanges input, the pin that does not connect said second inductance on first end cap of said fluorescent lamp is connected the other end that exchanges input; The pin that connects said second inductance on said first end cap is connected an end of said starter base; The pin that connects said first inductance on second end cap of said fluorescent lamp is connected the output of said Inductive ballast, and the pin that does not connect said first inductance on said second end cap is connected the other end of said starter base, on the said starter base starter is not installed.
Preferable, LED fluorescent lamp of the present invention after said the 3rd inductance, before said first bridge rectifier, also is parallel with the circuit that is formed by first electric capacity and the series connection of first resistance between two pins of said first end cap; After said the 4th inductance; Before said second bridge rectifier; When also being parallel with the circuit that is formed by the series connection of second electric capacity and second resistance between two pins of said second end cap, between the pin of said the 3rd inductance and first end cap that is connected said second inductance, connecting one, to make said the 3rd inductance original state be first switch element of off-state; To make said the 4th inductance original state be the second switch element of off-state in series connection one between the pin of said the 4th inductance and second end cap that is not connected said first inductance.
Preferable, between said the 3rd inductance and said first switch element, also be in series with the 3rd electric capacity;
Between said the 4th inductance and said second switch element, also be in series with the 4th 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 said Inductive ballast is connected an end that exchanges input, and the pin that does not connect said second inductance on first end cap of said fluorescent lamp is connected the other end that exchanges input, and the pin that connects said second inductance on said first end cap is connected an end of said starter base; The pin that connects said first inductance on second end cap of said fluorescent lamp is connected the output of said Inductive ballast; The pin that does not connect said first inductance on said second end cap is connected the other end of said starter base, and said starter base is equipped with starter, and said LED fluorescent lamp is the aforesaid LED fluorescent lamp that comprises said first switch element and said second switch element at least.
Preferable, said first switch element and said second switch element be in controllable silicon, photoelectrical coupler, relay and the transistor any;
When said first switch element was controllable silicon, said silicon controlled trigger end was connected on the connecting line between said first electric capacity and said first resistance;
When said second switch element was controllable silicon, said silicon controlled trigger end was connected on the connecting line between said second electric capacity and said second resistance.
Preferable, said be used for to said led light source group provide the circuit of constant current or constant voltage be resistance, transistor any.
It is perhaps, said that to be used for the circuit of constant current or constant voltage to said led light source group being provided be the LED power supply driver.
Preferable; When said when being used for providing the circuit of constant current or constant voltage to be the LED power supply driver to said led light source group; At the front end of said LED lamp group, the output of said first bridge rectifier also is parallel with the circuit of the 5th resistance and the 3rd switch element series connection formation.
Preferable, said the 3rd switch element comprises in starter, controllable silicon, triode, relay, the Zener diode any.
Preferable, LED fluorescent lamp of the present invention, before said LED lamp group, the output of said first bridge rectifier is parallel with first filter capacitor, and the output of said 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 said electric ballast are connected to the two ends that exchange input, and the two pins on first end cap of said fluorescent lamp is connected first output of said electron rectifier simultaneously, and the two pins on second end cap of said fluorescent lamp is connected second output of said electron rectifier at the same time.
Embodiment of the present invention embodiment has following beneficial effect:
The LED fluorescent lamp that the embodiment of the invention provides between the pin of end cap and LED lamp group, connected first inductance and second inductance; When LED fluorescent lamp that the embodiment of the invention is provided inserts in the fluorescent lamp circuit of prior art; After said first inductance and 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 the LED fluorescent lamp insert in the circuit of fluorescent lamp, the LED fluorescent lamp is normally lighted.In addition, for better the input characteristics of fluorescent lamp circuit being adjusted, the embodiment of the invention is parallel connection the 3rd inductance and the 4th inductance also.In addition; For better the input characteristics of fluorescent lamp circuit being adjusted; The embodiment of the invention on the basis of parallel connection the 3rd inductance and the 4th inductance, the circuit that parallel connection is formed by first electric capacity and the series connection of first resistance, and the parallel connection circuit of connecting and forming by second electric capacity and second resistance.In addition, for better the input characteristics of fluorescent lamp circuit being adjusted, the embodiment of the invention on the basis of parallel connection the 3rd inductance and the 4th inductance, the 5th electric capacity of also between the pin of said the 3rd inductance and first end cap that is connected said second inductance, connecting; Series connection the 6th electric capacity between the pin of said the 4th inductance and second end cap that is not connected said first inductance.In addition; For better the input characteristics of fluorescent lamp circuit being adjusted; The circuit that the embodiment of the invention is formed by first electric capacity and the series connection of first resistance in parallel connection; And on the basis of the circuit that formed by the series connection of second electric capacity and second resistance of parallel connection, between the pin of said the 3rd inductance and first end cap that is connected said second inductance, connecting one, to make said the 3rd inductance original state be first switch element of off-state; To make said the 4th inductance original state be the second switch element of off-state in series connection one between the pin of said the 4th inductance and second end cap that is not connected said first inductance.In addition, for better the input characteristics of fluorescent lamp circuit being adjusted, the embodiment of the invention also is in series with the 3rd electric capacity between said the 3rd inductance and said first switch element on the basis of series connection first switch element and second switch element; Between said the 4th inductance and said second switch element, also be in series with the 4th electric capacity.In addition; To be used for the circuit of constant current or constant voltage to said led light source group being provided be the LED power supply driver when said; When the peripheral circuit that inserts is the electron rectifier fluorescent lamp circuit; The output of said first bridge rectifier also is parallel with the circuit of the 5th resistance and the 3rd switch element series connection formation, and this circuit can produce feedback current to circuit input end on said 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, can economize on resources greatly like this with the LED fluorescent lamp of the embodiment of the invention, 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; Obviously, the 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 property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of existing a kind of electric ballast fluorescent lamp circuit;
Fig. 2 is the structural representation of existing another kind of electric ballast fluorescent lamp circuit;
Fig. 3 is the structural representation of existing a kind of Inductive ballast fluorescent lamp circuit;
Fig. 4 is existing a kind of LED fluorescent lamp peripheral circuit connected mode sketch map;
Fig. 5 is the internal circuit configuration sketch map of LED fluorescent lamp shown in Figure 4;
Fig. 6 is existing another kind of LED fluorescent lamp peripheral circuit connected mode sketch map;
Fig. 7 is the internal circuit configuration sketch map of LED fluorescent lamp shown in Figure 6;
Fig. 8 is existing another kind of LED fluorescent lamp peripheral circuit connected mode sketch map;
Fig. 9 is the internal circuit configuration sketch map of LED fluorescent lamp shown in Figure 8;
Figure 10 is the peripheral circuit connected mode sketch map of existing another kind of LED fluorescent lamp;
Figure 11 is the internal circuit configuration sketch map of first 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 electric ballast fluorescent lamp peripheral circuit shown in Figure 1;
Figure 13 is the internal circuit configuration sketch map 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 electric 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 the internal circuit configuration sketch map of the 3rd embodiment of LED fluorescent lamp of the present invention;
Figure 17 is that LED daylight lamp circuit shown in Figure 16 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit shown in Figure 1;
Figure 18 is the internal circuit configuration sketch map of the 4th 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 electric ballast fluorescent lamp peripheral circuit shown in Figure 1;
Figure 20 is the internal circuit configuration sketch map of the 5th embodiment of LED fluorescent lamp of the present invention;
Figure 21 is that LED daylight lamp circuit shown in Figure 20 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit shown in Figure 1;
Figure 22 is the internal circuit configuration sketch map of the 6th embodiment of LED fluorescent lamp of the present invention;
Figure 23 is that LED daylight lamp circuit shown in Figure 22 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit shown in Figure 1;
Figure 24 is the internal circuit configuration sketch map of the 7th 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 3.
Figure 26 is the internal circuit configuration sketch map of the 8th embodiment of LED fluorescent lamp of the present invention;
Figure 27 is the internal circuit configuration sketch map of the 9th embodiment of LED fluorescent lamp of the present invention;
Figure 28 is the internal circuit configuration sketch map of the tenth embodiment of LED fluorescent lamp of the present invention;
Figure 29 is the internal circuit configuration sketch map of the 11 embodiment of LED fluorescent lamp of the present invention;
Figure 30 is the internal circuit configuration sketch map of the 12 embodiment of LED fluorescent lamp of the present invention;
Figure 31 is the internal circuit configuration sketch map of the 13 embodiment of LED fluorescent lamp of the present invention;
Figure 32 is the internal circuit configuration sketch map of the 14 embodiment of LED fluorescent lamp of the present invention;
Figure 33 is the internal circuit configuration sketch map of the 15 embodiment of LED fluorescent lamp of the present invention;
Figure 34 is the internal circuit configuration sketch map of the 16 embodiment of LED fluorescent lamp of the present invention;
Figure 35 is the internal circuit configuration sketch map of the 17 embodiment of LED fluorescent lamp of the present invention;
Figure 36 is the internal circuit configuration sketch map of the 18 embodiment of LED fluorescent lamp of the present invention;
Figure 37 is the internal circuit configuration sketch map of the 19 embodiment of LED fluorescent lamp of the present invention;
Figure 38 is the internal circuit configuration sketch map of the 20 embodiment of LED fluorescent lamp of the present invention.
The specific embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention will be carried out clear, intactly description.
A kind of LED fluorescent lamp provided by the invention; Comprise the LED fluorescent tube; Said LED fluorescent tube comprises first end cap and second end cap; Said first end cap and said second end cap comprise two pins respectively; Inner at said LED fluorescent tube; Be parallel with second bridge rectifier being parallel with between two pins of said first end cap between first bridge rectifier and two pins at said second end cap, the output parallel connection LED lamp group of said first bridge rectifier and said second bridge rectifier, said LED lamp group comprise led light source group and the circuit that is used for providing constant current or constant voltage to said led light source group; Between a pin of the input of said LED lamp group and said second end cap, be in series with first inductance, between a pin of the output of said LED lamp group and said first end cap, be in series with second inductance.In concrete the realization; When the said circuit that constant current or constant voltage be provided adopts in resistance, the transistor any; The internal circuit configuration of this LED fluorescent lamp can be shown in figure 11; And when the said circuit that constant current or constant voltage be provided adopted power supply driver, this LED fluorescent lamp internal circuit configuration can be like Figure 26 and shown in Figure 27.
Shown in figure 11; The internal circuit of LED fluorescent lamp of the present invention can comprise pin 1, pin 2, pin 3 and pin 4; In concrete the realization, said pin 1 can be positioned on first end cap of LED fluorescent lamp with pin 2, and said pin 3 can be positioned on second end cap of LED fluorescent lamp with pin 4.First bridge rectifier that parallel connection is made up of Q1-Q4 between pin 1 and pin 2; Between the both positive and negative polarity of the output of first bridge rectifier of forming by Q1-Q4, connect a filter capacitor C1 (in concrete the realization; Can not comprise filter capacitor C1); 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 C2 (in concrete the realization; Can not comprise filter capacitor C2), can know that by Figure 11 bridge rectifier, filter capacitor between the bridge rectifier between pin 1 and the pin 2, filter capacitor and pin 3 and the pin 4 are 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 said filter capacitor C1 and filter capacitor C2; And series inductance L3 between the input of LED lamp group and pin 3, series inductance L4 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 described in concrete the realization.
Figure 12 is that LED daylight lamp circuit shown in Figure 11 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 first embodiment of fluorescent lamps connected connection circuit of the present invention.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; Shown in figure 12, when the LED daylight lamp circuit among Figure 11 being connected in the electric 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; The input of electric ballast is connected to and exchanges the AC input; In concrete the realization, when exchanging AC input incoming transport electricity, can know according to the course of work of electric ballast; It at first need provide a preheat curent to filament, start high pressure then triggers the conducting of LDE lamp; And in the present embodiment, inductance L 3 and inductance L 4 will influence the output characteristics of electric ballast, and be concrete; Inductance L 3 can be regulated the high frequency voltage of electric ballast output with inductance L 4; So that the circuit parameter between input pin 1, pin 2, pin 3 and the pin 4 matees with the parameter of lighting the LED fluorescent lamp fully, when not changing primary electron ballast fluorescent lamp circuit, normally the LED lamp is lighted to be implemented in.
Shown in figure 26, it is with the circuit T1 that constant current or constant voltage are provided shown in power supply driver replacement Figure 11.In concrete the realization, when adopting daylight lamp circuit shown in Figure 26, its mode that inserts electric ballast fluorescent lamp circuit shown in Figure 1 is identical with Figure 12, 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 on the basis of daylight lamp circuit shown in Figure 26, increase the series circuit that forms by resistance R x and starter S1.Like Figure 27, at the front end of said LED lamp group, the output of said 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 inserts the electric ballast fluorescent lamp circuit with mode shown in Figure 12; The output of electron rectifier can produce a high voltage, at this moment through behind the bridge rectifier between the both positive and negative polarity that the direct current of bridge rectifier is exported; The conducting that is triggered of starter S1 moment; Be short-circuited, on resistance R x, have electric current and flow 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 concrete the realization; The element of connecting with resistance R x is not limited to starter; Also can be switch elements such as controllable silicon, triode, relay, insert in the electric ballast fluorescent lamp circuit, between the both positive and negative polarity of the output of bridge rectifier, can produce certain voltage as long as these switch elements can satisfy when the LED daylight lamp circuit; 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; Said LED fluorescent tube comprises first end cap and second end cap, and said first end cap and said second end cap comprise two pins respectively, and is inner at said LED fluorescent tube; Be parallel with parallelly connected second bridge rectifier between first bridge rectifier and two pins between two pins of said first end cap at said second end cap; And, before said first bridge rectifier, be parallel with the 3rd inductance between two pins of said first end cap; Before said second bridge rectifier, be parallel with the 4th inductance between two pins of said second end cap; The output parallel connection LED lamp group of said first bridge rectifier and said second bridge rectifier; Said LED lamp group comprises led light source group and the circuit that is used for providing constant current or constant voltage to said led light source group; The input of said LED lamp group and said second end cap wherein be in series with first inductance between the pin, between a pin of the output of said LED lamp group and said first end cap, be in series with second inductance.Provide the circuit of constant current or constant voltage to can be in resistance, transistor and the LED power supply driver any in concrete the realization.In concrete the realization; 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 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 like Figure 28 and shown in Figure 29.
Shown in figure 13; LED fluorescent lamp internal circuit of the present invention can be on the basis of circuit shown in Figure 11; Before first bridge rectifier that Q1-Q4 forms; Parallel connection the 3rd inductance L 1 between said pin 1 and pin 2, before second bridge rectifier that Q5-Q8 forms, parallel connection the 4th inductance L 2 between said pin 3 and pin 4.The function that circuit shown in Figure 13 and circuit shown in Figure 11 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 conventional electronic ballast fluorescent lamp circuit shown in Figure 2.After effective cooperation of present embodiment through inductance L 1, inductance L 2, inductance L 3, inductance L 4; Inductive ballast or the output characteristics of electric ballast and the input characteristics of LED fluorescent lamp in the conventional fluorescent circuit for 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 electric ballast fluorescent lamp peripheral circuit shown in Figure 1.Simultaneously, Figure 15 has also formed the structural representation of second embodiment of fluorescent lamps connected connection circuit of the present invention.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; Shown in figure 14; When the LED daylight lamp circuit among Figure 13 being connected in the electric 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 concrete the realization; 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 matees with the parameter of lighting the LED fluorescent lamp fully, when not changing primary electron ballast fluorescent lamp circuit, normally the LED lamp is lighted to be implemented in.
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; 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 concrete the realization, when exchanging AC input incoming transport electricity; Inductance L 1, inductance L 2, inductance L 3, inductance L 4 will influence the output characteristics of electric ballast; So that the circuit parameter between input pin 1, pin 2, pin 3 and the pin 4 matees with the parameter of lighting the LED fluorescent lamp fully, when not changing primary electron ballast fluorescent lamp circuit, normally the LED lamp is lighted to be implemented in.
Shown in figure 28, it is with the circuit T1 that constant current or constant voltage are provided shown in power supply driver replacement Figure 13.In concrete the realization, when adopting daylight lamp circuit shown in Figure 28, its mode that inserts electric ballast fluorescent lamp circuit illustrated in figures 1 and 2 and Figure 14, connecting circuit shown in Figure 15 are identical, do 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 on the basis of daylight lamp circuit shown in Figure 28, increase the series circuit that forms by resistance R x and starter S1.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; Said LED fluorescent tube comprises first end cap and second end cap; Said first end cap and said second end cap comprise two pins respectively; Inner at said LED fluorescent tube; The circuit and first bridge rectifier that between two pins of said first end cap, are parallel with the 3rd inductance successively, form by the series connection of first electric capacity and first resistance; Between two pins of said second end cap, be parallel with the 4th inductance successively, by the circuit and second bridge rectifier that the series connection of second electric capacity and second resistance forms, the output parallel connection LED lamp group of said first bridge rectifier and said second bridge rectifier, said LED lamp group comprise the led light source group and are used for providing the circuit of constant current or constant voltage to said led light source group; The input of said LED lamp group and said second end cap wherein be in series with first inductance between the pin, between a pin of the output of said LED lamp group and said first end cap, be in series with second inductance.Provide the circuit of constant current or constant voltage to can be in resistance, transistor and the LED power supply driver any in concrete the realization.In concrete the realization; 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 shown in figure 16; 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 like Figure 30 and shown in Figure 31.
Shown in figure 16; The internal circuit of LED fluorescent lamp of the present invention can be on the basis of circuit shown in Figure 13; Parallel connection is by capacitor C 3 circuit that 3 series connection form with resistance R between pin 1 and pin 2, and parallel connection is by capacitor C 4 circuit that 4 series connection form with resistance R between pin 3 and pin 4.The function that circuit shown in Figure 16 and circuit shown in Figure 11 are realized is basic identical, and it still can directly be linked in traditional Inductive ballast fluorescent lamp circuit or the conventional electronic ballast fluorescent lamp circuit.After effective cooperation of present embodiment through 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 or the output characteristics of electric ballast and the input characteristics of LED fluorescent lamp in the conventional fluorescent circuit for lamp are mated more; Improve the illumination effect of LED fluorescent lamp, strengthen the stability of entire circuit.
Figure 17 is that LED daylight lamp circuit shown in Figure 16 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit shown in Figure 1.Simultaneously, Figure 17 has also formed the structural representation of the 3rd embodiment of fluorescent lamps connected connection circuit of the present invention.Shown in figure 17; When the LED daylight lamp circuit among Figure 16 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 concrete the realization, when exchanging AC input incoming transport electricity; After effective cooperation of present embodiment through 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; So that the circuit parameter between input pin 1, pin 2, pin 3 and the pin 4 matees with the parameter of lighting the LED fluorescent lamp fully, 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 2.Its access way is identical with Figure 15, does not give unnecessary details at this.
Shown in figure 30, it is with the circuit T1 that constant current or constant voltage are provided shown in power supply driver replacement Figure 16.In concrete the realization, when adopting daylight lamp circuit shown in Figure 30, its mode that inserts electric ballast fluorescent lamp circuit illustrated in figures 1 and 2 is identical with the connecting circuit of Figure 14, Figure 15, 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 on the basis of daylight lamp circuit shown in Figure 30, increase the series circuit that forms by resistance R x and starter S1.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; Said LED fluorescent tube comprises first end cap and second end cap; Said first end cap and said second end cap comprise two pins respectively; Inner at said LED fluorescent tube, between two pins of said first end cap, be parallel with the circuit and first bridge rectifier that the 3rd inductance and the 5th capacitances in series form, between two pins of said second end cap, be parallel with the circuit and second rectification circuit that the 4th inductance and the 6th capacitances in series form; The output parallel connection LED lamp group of said first bridge rectifier and said second bridge rectifier; Said LED lamp group comprises the led light source group and is used for providing the circuit of constant current or constant voltage to said led light source group, the input of said LED lamp group and said second end cap wherein be in series with first inductance between the pin, between a pin of the output of said LED lamp group and said first end cap, be in series with second inductance.Provide the circuit of constant current or constant voltage to can be in resistance, transistor and the LED power supply driver any in concrete the realization.In concrete the realization; 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 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 like Figure 32 and shown in Figure 33.
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 capacitor C 5 of between inductance L 1 and pin 2, having connected, the capacitor C 6 of between inductance L 2 and pin 4, having connected.The function that circuit shown in Figure 180 and circuit shown in Figure 11 are realized is basic identical, and it still can directly be linked in traditional Inductive ballast fluorescent lamp circuit or the conventional electronic ballast fluorescent lamp circuit.After effective cooperation of present embodiment through inductance L 1, capacitor C 5, inductance L 2, capacitor C 6, inductance L 3, inductance L 4; Inductive ballast or the output characteristics of electric ballast and the input characteristics of LED fluorescent lamp in the conventional fluorescent circuit for 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 electric ballast fluorescent lamp peripheral circuit shown in Figure 1.Simultaneously, Figure 19 has also formed the structural representation of the 4th embodiment of fluorescent lamps connected connection circuit of the present invention.Shown in figure 19; When the LED daylight lamp circuit among Figure 18 being connected in the electric 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 concrete the realization; 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 matees with the parameter of lighting the LED fluorescent lamp fully, 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 2.Its access way is identical with Figure 15, does not give unnecessary details at this.
Shown in figure 32, it is with the circuit T1 that constant current or constant voltage are provided shown in power supply driver replacement Figure 18.In concrete the realization, when adopting daylight lamp circuit shown in Figure 32, its mode that inserts electric ballast fluorescent lamp circuit illustrated in figures 1 and 2 is identical with the connecting circuit of Figure 14, Figure 15, 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 on the basis of daylight lamp circuit shown in Figure 32, increase the series circuit that forms by resistance R x and starter S1.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; Said LED fluorescent tube comprises first end cap and second end cap; Said first end cap and said second end cap comprise two pins respectively; Inner at said LED fluorescent tube; Between two pins of said first end cap, be parallel with the circuit and first bridge rectifier of circuit, first electric capacity and first resistance series connection formation of the 3rd inductance and first switch element series connection formation; Between two pins of said second end cap, be parallel with the circuit and second bridge rectifier of circuit, second electric capacity and second resistance series connection formation of the formation of the 4th inductance and second switch element connected in series, the output parallel connection LED lamp group of said first bridge rectifier and said second bridge rectifier, said LED lamp group comprise led light source group and the circuit that is used for providing constant current or constant voltage to said led light source group; The input of said LED lamp group and said second end cap wherein be in series with first inductance between the pin, between a pin of the output of said LED lamp group and said first end cap, be in series with second inductance.In concrete the realization, said switch element original state is an off-state.In concrete the realization, said first switch element and said second switch element can be in controllable silicon, photoelectrical coupler, relay and the transistor any.When said first switch element and/or said second switch element are controllable silicon; Said silicon controlled trigger end as first switch element is connected on the connecting line between said first electric capacity and said first resistance, and said silicon controlled trigger end as the second switch element is connected on the connecting line between said second electric capacity and said second resistance.In concrete the realization; 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 shown in figure 20; 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 like Figure 34 and shown in Figure 35.
Shown in figure 20; The internal circuit of LED fluorescent lamp of the present invention can be on the basis of circuit shown in Figure 16; Between inductance L 1 and pin 2, be connected in series a controllable silicon T2; The trigger end G of said controllable silicon T2 is connected between capacitor C 3 and the resistance R 3, between inductance L 2 and pin 4, is connected in series a controllable silicon T3, and the trigger end G of said silicon controlled T3 is connected between capacitor C 4 and the resistance R 4.The function that circuit shown in Figure 20 and circuit shown in Figure 11 are realized is basic identical; It still can directly insert in the conventional electronic ballast fluorescent lamp circuit shown in Figure 1; And when the LED fluorescent lamp that adopts present embodiment inserted the Inductive ballast fluorescent lamp circuit, the starter on the said Inductive ballast fluorescent lamp circuit can keep.After effective cooperation of present embodiment through 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 or the output characteristics of electric ballast and the input characteristics of LED fluorescent lamp in the conventional fluorescent circuit for lamp are mated more; Improve the illumination effect of LED fluorescent lamp, strengthen the stability of entire circuit.
Figure 21 is that LED daylight lamp circuit shown in Figure 20 is connected to the electrical block diagram in the electric ballast fluorescent lamp peripheral circuit.Simultaneously, Figure 21 has also formed the structural representation of the 5th embodiment of fluorescent lamps connected connection circuit of the present invention.Shown in figure 21; When the LED daylight lamp circuit among Figure 20 being connected in the electric 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 concrete the realization; 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.Can know that according to electrician's knowledge 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; Under the effect of high-frequency alternating current, capacitor C 3 shows less capacitive reactance with capacitor C 4, and therefore 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 6th embodiment shown in Figure 20.
Accordingly, the LED fluorescent lamp in the present embodiment also can directly insert in the electric ballast fluorescent lamp circuit shown in Figure 2, and its access way is identical with Figure 15, does not give unnecessary details at this.
Shown in figure 34, it is with the circuit T1 that constant current or constant voltage are provided shown in power supply driver replacement Figure 20.In concrete the realization, when adopting daylight lamp circuit shown in Figure 34, its mode that inserts electric ballast fluorescent lamp circuit illustrated in figures 1 and 2 and Figure 14, connecting circuit shown in Figure 15 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 on the basis of daylight lamp circuit shown in Figure 34, increase the series circuit that forms by resistance R x and starter S1.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; Said LED fluorescent tube comprises first end cap and second end cap; Said first end cap and said second end cap comprise two pins respectively; Inner at said LED fluorescent tube; Between two pins of said first end cap, be parallel with the 3rd inductance, the 3rd electric capacity and the first switch element three circuit and first bridge rectifier that the circuit, first electric capacity and first resistance that form connects and form of connecting; Between two pins of said second end cap, be parallel with the 4th inductance, the 4th electric capacity and the second switch element three circuit and second bridge rectifier that the circuit, second electric capacity and second resistance that form connects and form of connecting; The output parallel connection LED lamp group of said first bridge rectifier and said second bridge rectifier; Said LED lamp group comprises the led light source group and is used for providing the circuit of constant current or constant voltage to said led light source group, the input of said LED lamp group and said second end cap wherein be in series with first inductance between the pin, between a pin of the output of said LED lamp group and said first end cap, be in series with second inductance.In concrete the realization, said switch element original state is an off-state.In concrete the realization, said first switch element and said second switch element can be in controllable silicon, photoelectrical coupler, relay and the transistor any.When said first switch element and/or said second switch element are controllable silicon; Said silicon controlled trigger end as first switch element is connected on the connecting line between said the 3rd electric capacity and said the 3rd resistance, and said silicon controlled trigger end as the second switch element is connected on the connecting line between said the 4th electric capacity and said the 4th resistance.In concrete the realization; 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 shown in figure 22; 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 like Figure 36 and shown in Figure 37.
Like Figure 22, the internal circuit of LED fluorescent lamp of the present invention can be on the basis of circuit shown in Figure 20, 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 22 and circuit shown in Figure 11 are realized is basic identical; It still can directly be linked in the conventional electronic ballast fluorescent lamp circuit shown in Figure 1; And when the LED fluorescent lamp that adopts present embodiment inserted the Inductive ballast fluorescent lamp circuit, the starter on the said Inductive ballast fluorescent lamp circuit can keep.
Figure 23 is that LED daylight lamp circuit shown in Figure 22 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 6th embodiment of fluorescent lamps connected connection circuit of the present invention.Shown in figure 23; When the LED daylight lamp circuit among Figure 22 being connected in the electric 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 insert in the electric ballast fluorescent lamp circuit shown in Figure 2, and its access way is identical with Figure 15, does not give unnecessary details at this.
Shown in figure 36, it is with the circuit T1 that constant current or constant voltage are provided shown in power supply driver replacement Figure 22.In concrete the realization, when adopting daylight lamp circuit shown in Figure 36, its mode that inserts electric ballast fluorescent lamp circuit illustrated in figures 1 and 2 and Figure 14 and connecting circuit shown in Figure 15 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 on the basis of daylight lamp circuit shown in Figure 36, increase the series circuit that forms by resistance R x and starter S1.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; Said LED fluorescent tube comprises first end cap and second end cap; Said first end cap and said second end cap comprise two pins respectively; Inner at said LED fluorescent tube; Be parallel with the 4th inductance and second bridge rectifier being parallel with between two pins of said first end cap between the 3rd inductance and first bridge rectifier and two pins at said second end cap, the output parallel connection LED lamp group of said first bridge rectifier and said second bridge rectifier, said LED lamp group comprise led light source group and the circuit that is used for providing constant current or constant voltage to said led light source group; The input of said LED lamp group and said second end cap wherein be in series with first inductance and the 7th electric capacity first inductance between the pin, between a pin of the output of said LED lamp group and said first end cap, be in series with second inductance and the 8th 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 concrete the realization.In concrete the realization; 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 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 shown in figure 38.
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 electric ballast fluorescent lamp circuit and the output characteristics of electric ballast and the input characteristics of LED daylight are mated.
In Figure 24, series capacitance C9 after the inductance L 3, series capacitance C10 after the inductance L 4.
In Figure 38, remove the capacitor C 1 and capacitor C 2 among Figure 24, comprised the series circuit that Rx and S1 form.
In addition, shown in figure 25, LED daylight lamp circuit shown in Figure 24 also can be connected in traditional Inductive ballast fluorescent lamp peripheral circuit.Concrete is shown in figure 25; When LED daylight lamp circuit shown in Figure 24 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 the output of said Inductive ballast; The pin 2 and the pin 4 of LED daylight lamp circuit are connected on the starter base Y in the fluorescent lamp peripheral circuit, and be shown in figure 25, do not connect starter on the said starter base Y.
In concrete the realization, the capacitor C 9 and the capacitor C 10 of present embodiment can be added among other embodiment of LED fluorescent lamp of the present invention equally.
Above disclosedly be merely preferred embodiment of the present invention, can not limit the present invention's interest field certainly with this, 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 (13)
1. LED fluorescent lamp; It is characterized in that; Comprise the LED fluorescent tube; Said LED fluorescent tube comprises first end cap and second end cap; Said first end cap and said second end cap comprise two pins respectively, and be inner at said LED fluorescent tube, is parallel with second bridge rectifier being parallel with between two pins of said first end cap between first bridge rectifier and two pins at said second end cap; The output parallel connection LED lamp group of said first bridge rectifier and said second bridge rectifier; Said LED lamp group comprises the led light source group and is used for providing the circuit of constant current or constant voltage to said led light source group, between a pin of the input of said LED lamp group and said second end cap, is in series with first inductance, between a pin of the output of said LED lamp group and said first end cap, is in series with second inductance.
2. LED fluorescent lamp as claimed in claim 1 is characterized in that,
Before said first bridge rectifier, be parallel with the 3rd inductance between two pins of said first end cap;
Before said second bridge rectifier, be parallel with the 4th inductance between two pins of said second end cap.
3. LED fluorescent lamp as claimed in claim 2 is characterized in that,
After said the 3rd inductance, before said first bridge rectifier, also be parallel with the circuit that forms by first electric capacity and the series connection of first resistance between two pins of said first end cap;
After said the 4th inductance, before said second bridge rectifier, also be parallel with the circuit that forms by second electric capacity and the series connection of second resistance between two pins of said second end cap.
4. LED fluorescent lamp as claimed in claim 2 is characterized in that,
Series connection the 5th electric capacity between the pin of said the 3rd inductance and first end cap that is connected said second inductance;
Series connection the 6th electric capacity between the pin of said the 4th inductance and second end cap that is not connected said first inductance.
5. LED fluorescent lamp as claimed in claim 3 is characterized in that,
To make said the 3rd inductance original state be first switch element of off-state in series connection one between the pin of said the 3rd inductance and first end cap that is connected said second inductance;
To make said the 4th inductance original state be the second switch element of off-state in series connection one between the pin of said the 4th inductance and second end cap that is not connected said first inductance.
6. LED fluorescent lamp as claimed in claim 5 is characterized in that,
Between said the 3rd inductance and said first switch element, also be in series with the 3rd electric capacity;
Between said the 4th inductance and said second switch element, also be in series with the 4th electric capacity.
7. LED fluorescent lamp as claimed in claim 5 is characterized in that,
Said first switch element and said second switch element be in controllable silicon, photoelectrical coupler, relay and the transistor any;
When said first switch element was controllable silicon, said silicon controlled trigger end was connected on the connecting line between said first electric capacity and said first resistance;
When said second switch element was controllable silicon, said silicon controlled trigger end was connected on the connecting line between said second electric capacity and said second resistance.
8. LED fluorescent lamp as claimed in claim 1 is characterized in that,
Series connection the 7th electric capacity between the pin of said first inductance and second end cap that is connected said first inductance;
Series connection the 8th electric capacity between the output of said second inductance and the LED lamp group that is connected said second inductance.
9. like each described LED fluorescent lamp among the claim 1-7, it is characterized in that, said be used for to said 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 said when being used for providing the circuit of constant current or constant voltage to be the LED power supply driver to said led light source group; At the front end of said LED lamp group, the output of said 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, said the 3rd switch element comprises in starter, controllable silicon, triode, relay, the Zener diode any.
12. like each described LED fluorescent lamp among the claim 1-7; It is characterized in that; Before said LED lamp group, the output of said first bridge rectifier is parallel with first filter capacitor, and the output of said second bridge rectifier is parallel with second filter capacitor.
13. fluorescent lamps connected connection circuit; Comprise the electric ballast in the fluorescent lamp circuit; It is characterized in that, also comprise that two inputs of said electric ballast are connected to the two ends that exchange input like each described LED fluorescent lamp among the claim 1-8; Two pins on first end cap of said fluorescent lamp is connected first output of said electron rectifier simultaneously, and the two pins on second end cap of said fluorescent lamp is connected second output of said electron rectifier at the same time.
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| CN102155648A (en) * | 2010-12-07 | 2011-08-17 | 刘昌贵 | LED (light-emitting diode) fluorescent lamp and fluorescent lamp connecting circuit |
| CN203590544U (en) * | 2013-03-24 | 2014-05-07 | 柳州铁道职业技术学院 | Railway train operation sand table LED model signal machine lighting circuit |
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| CN102155646A (en) * | 2010-12-07 | 2011-08-17 | 刘昌贵 | Light-emitting diode (LED) fluorescent lamp and connecting circuit thereof |
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| CN1662124A (en) * | 2004-11-19 | 2005-08-31 | 友达光电股份有限公司 | Rear bearing sheet for flat display and its mfg. method |
| CN102155646A (en) * | 2010-12-07 | 2011-08-17 | 刘昌贵 | Light-emitting diode (LED) fluorescent lamp and connecting circuit thereof |
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| TWI477188B (en) * | 2012-07-27 | 2015-03-11 | Justenergy Technology Corp | LED tube |
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