CN202889223U - Switch power source and LED fluorescent lamp with built-in power source - Google Patents
Switch power source and LED fluorescent lamp with built-in power source Download PDFInfo
- Publication number
- CN202889223U CN202889223U CN 201220227115 CN201220227115U CN202889223U CN 202889223 U CN202889223 U CN 202889223U CN 201220227115 CN201220227115 CN 201220227115 CN 201220227115 U CN201220227115 U CN 201220227115U CN 202889223 U CN202889223 U CN 202889223U
- Authority
- CN
- China
- Prior art keywords
- electrode
- fluorescent lamp
- power supply
- differential mode
- switching power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The embodiment of the utility model provides a switch power source and an LED fluorescent lamp with a built-in power source. The switch power source helps to at least overcome problems about imbalance of electromagnetic interference in two input lines because an impedance difference between the two input lines of a conventional switch power source is excessively high. The switch power source comprises an AC/DC circuit module, a switch power source main circuit module, a first differential mode inductor and a second differential mode inductor. One end of the first differential mode inductor is coupled with a first AC input end of the AC/DC circuit module, and the other end of the first differential mode inductor serves as a first input end of the switch power source. One end of the second differential mode inductor is coupled with a second AC input end of the AC/DC circuit module, and the other end of the second differential mode inductor serves as a second input end of the switch power source. The LED fluorescent lamp with the built-in power source comprises the above switch power source, a lampshade and an LED load unit. The above switch power source and the LED fluorescent lamp with the built-in power source, provided by the embodiment of the utility model, can be applied to the electric power and electronic field.
Description
Technical field
The utility model relates generally to field of power electronics, is specifically related to a kind of Switching Power Supply and on-chip power formula LED fluorescent lamp.
Background technology
Along with the development of power electronic technology, various electronics, electric equipment are widely used in people's work, life and the industrial circle, and present many electronics, electric equipment all use Switching Power Supply.
Switching Power Supply is a kind of power supply commonly used in the electric and electronic technical field, and the time ratio that it utilizes modern power electronics technology control switch pipe to turn on and off is kept regulated output voltage.In using electronics, electric equipment or other electric circuit construction of conventional switch power supply as power supply, owing to there being the reasons such as particular element or special construction in the circuit, may cause the impedance in two incoming lines of conventional switch power supply to have big difference, and then cause two electromagnetic interference (EMI in the incoming line, electromagnetic interference) imbalance, for example, the EMI in incoming line is larger, and the EMI in another incoming line is less.
The utility model content
Provided hereinafter about brief overview of the present utility model, in order to basic comprehension about some aspect of the present utility model is provided.Should be appreciated that this general introduction is not about exhaustive general introduction of the present utility model.It is not that intention is determined key of the present utility model or pith, neither be intended to limit scope of the present utility model.Its purpose only is that the form of simplifying provides some concept, with this as the in greater detail preorder of discussing after a while.
Defects in view of prior art, one of the purpose of this utility model provides a kind of Switching Power Supply and on-chip power formula LED fluorescent lamp, causes two unbalanced problems of the electromagnetic interference in the incoming line to overcome at least in the circuit structure that uses the conventional switch power supply owing to the impedance in two incoming lines of conventional switch power supply has big difference.
To achieve these goals, according to embodiment of the present utility model, a kind of Switching Power Supply is provided, comprise AC/DC circuit module and the Switching Power Supply main circuit module that couples mutually with above-mentioned AC/DC circuit module, above-mentioned Switching Power Supply also comprises the first differential mode inductance and the second differential mode inductance, wherein, one end of above-mentioned the first differential mode inductance couples mutually with the first ac input end of above-mentioned AC/DC circuit module, the other end of above-mentioned the first differential mode inductance is as the first input end of above-mentioned Switching Power Supply, one end of above-mentioned the second differential mode inductance couples mutually with the second ac input end of above-mentioned AC/DC circuit module, and the other end of above-mentioned the second differential mode inductance is as the second input of above-mentioned Switching Power Supply.
According to embodiment of the present utility model, a kind of on-chip power formula LED fluorescent lamp also is provided, this on-chip power formula LED fluorescent lamp comprises aforesaid Switching Power Supply, also comprise lampshade, the LED load unit, the first electrode, the second electrode, third electrode and the 4th electrode, wherein, above-mentioned lampshade has the consistent shape of traditional fluorescent lamp tube shape that is complementary with the traditional fluorescent lamp seat, it is inner that above-mentioned Switching Power Supply and above-mentioned LED load unit are packaged in above-mentioned lampshade, and above-mentioned Switching Power Supply is used for driving above-mentioned LED load unit, described the first electrode couples mutually with the described first input end of described Switching Power Supply, described the second electrode couples mutually with described second input of described Switching Power Supply, and described third electrode and described the 4th electrode short circuit.
In addition, according to embodiment of the present utility model, another kind of on-chip power formula LED fluorescent lamp also is provided, this on-chip power formula LED fluorescent lamp comprises aforesaid Switching Power Supply, also comprise lampshade, the LED load unit, the first electrode, the second electrode, third electrode and the 4th electrode, wherein, above-mentioned lampshade has the consistent shape of traditional fluorescent lamp tube shape that is complementary with the traditional fluorescent lamp seat, it is inner that above-mentioned Switching Power Supply and above-mentioned LED load unit are packaged in above-mentioned lampshade, and above-mentioned Switching Power Supply is used for driving above-mentioned LED load unit, described the first electrode couples mutually with the described first input end of described Switching Power Supply, described the second electrode couples mutually with the described first input end of described Switching Power Supply, described third electrode and described the 4th electrode short circuit, and described second input of described Switching Power Supply couples mutually with described third electrode.
Switching Power Supply and on-chip power formula LED fluorescent lamp according to above-mentioned the utility model embodiment, can realize following at least benefit: can be so that the impedance in two incoming lines of Switching Power Supply differ less or more approaching, thus the EMI in can two incoming lines of balance.
By below in conjunction with the detailed description of accompanying drawing to most preferred embodiment of the present utility model, these and other advantage of the present utility model will be more obvious.
Description of drawings
The utility model can by with reference to hereinafter by reference to the accompanying drawings given description be better understood, wherein in institute's drawings attached, used same or analogous Reference numeral to represent identical or similar parts.Described accompanying drawing comprises in this manual and forms the part of this specification together with following detailed description, and is used for further illustrating preferred embodiment of the present utility model and explains principle and advantage of the present utility model.In the accompanying drawings:
Fig. 1 is the circuit block diagram of a kind of exemplary configuration of schematically illustrated Switching Power Supply according to embodiment of the present utility model.
Fig. 2 is the circuit block diagram of the another kind of exemplary configuration of schematically illustrated Switching Power Supply according to embodiment of the present utility model.
Fig. 3 A is the schematic diagram that an example of traditional fluorescent lamp pipe is shown.
Fig. 3 B is the schematic diagram of the traditional fluorescent lamp seat that is complementary of schematically illustrated and traditional fluorescent lamp pipe as shown in Figure 3A.
Fig. 3 C is the schematically illustrated schematic diagram that traditional fluorescent lamp pipe as shown in Figure 3A is coupled to the traditional fluorescent lamp seat shown in Fig. 3 B.
Fig. 4 A is circuit and the structural representation that illustrates according to a kind of exemplary configuration of the on-chip power formula LED fluorescent lamp of embodiment of the present utility model.
Fig. 4 B is the schematic appearance that the on-chip power formula LED fluorescent lamp shown in Fig. 4 A is shown.
Fig. 4 C and 4D are the schematically illustrated schematic diagrams that on-chip power formula LED fluorescent lamp shown in Fig. 4 B is coupled to the traditional fluorescent lamp seat.
Fig. 5 A is circuit and the structural representation that illustrates according to the another kind of exemplary configuration of the on-chip power formula LED fluorescent lamp of embodiment of the present utility model.
Fig. 5 B and 5C are the schematically illustrated schematic diagrams that on-chip power formula LED fluorescent lamp shown in Fig. 5 A is coupled to the traditional fluorescent lamp seat.
Embodiment
In connection with accompanying drawing example embodiment of the present utility model is described hereinafter.For clarity and conciseness, all features of actual execution mode are not described in specification.Yet, should understand, in the process of any this practical embodiments of exploitation, must make a lot of decisions specific to execution mode, in order to realize developer's objectives, for example, meet those restrictive conditions with system and traffic aided, and these restrictive conditions may change to some extent along with the difference of execution mode.In addition, might be very complicated and time-consuming although will also be appreciated that development, concerning the those skilled in the art that have benefited from present disclosure, this development only is routine task.
At this, what also need to illustrate a bit is, for fear of having blured the utility model because of unnecessary details, only show in the accompanying drawings with according to the closely-related apparatus structure of scheme of the present utility model and/or treatment step, and omitted other details little with the utility model relation.
As indicated above, in using electronics, electric equipment or other electric circuit construction of conventional switch power supply as power supply, may be owing to exist particular element or special construction etc. former thereby cause the impedance in two incoming lines of conventional switch power supply to have big difference in the circuit, and then so that the EMI in two incoming lines is uneven.
In order to address this problem at least, the utility model provides a kind of Switching Power Supply, this Switching Power Supply is by coupling respectively a differential mode inductance in two incoming lines of conventional switch power supply, can be so that the impedance in two circuits differ less or more approaching, thus the EMI in can two incoming lines of balance.
Above-mentioned Switching Power Supply comprises AC/DC circuit module and the Switching Power Supply main circuit module that couples mutually with above-mentioned AC/DC circuit module, and comprise the first differential mode inductance and the second differential mode inductance, wherein, one end of above-mentioned the first differential mode inductance couples mutually with the first ac input end of above-mentioned AC/DC circuit module, the other end of above-mentioned the first differential mode inductance is as the first input end of above-mentioned Switching Power Supply, one end of above-mentioned the second differential mode inductance couples mutually with the second ac input end of above-mentioned AC/DC circuit module, and the other end of above-mentioned the second differential mode inductance is as the second input of above-mentioned Switching Power Supply.
Describe the example arrangement of above-mentioned Switching Power Supply in detail below in conjunction with Fig. 1 and Fig. 2.
Fig. 1 is the circuit block diagram of a kind of exemplary configuration of schematically illustrated Switching Power Supply according to embodiment of the present utility model.As shown in Figure 1, Switching Power Supply 100 comprises AC/DC circuit module 110, Switching Power Supply main circuit module 120, the first differential mode inductance 130 and the second differential mode inductance 140.
Wherein, in a kind of specific implementation according to the Switching Power Supply of embodiment of the present utility model, AC/DC circuit module 110 for example can adopt existing various AC/DC circuit module to realize, Switching Power Supply main circuit module 120 is such as being in the various Switching Power Supply main circuits such as normal shock switching circuit, anti-energizing switch circuit, full bridge switching circuit and half-bridge switch circuit any one.
In addition, because traditional Switching Power Supply generally includes AC/DC circuit module and Switching Power Supply main circuit module, therefore in the another kind of specific implementation according to the Switching Power Supply of embodiment of the present utility model, also can adopt traditional Switching Power Supply to come AC/DC circuit module 110 and Switching Power Supply main circuit module 120 in the whole realization Switching Power Supply 100 as shown in Figure 1.
As shown in Figure 1, an end of the first differential mode inductance 130 can be coupled in the first ac input end P of AC/DC circuit module 110
AC1On, and with the other end of the first differential mode inductance 130 an input P as whole Switching Power Supply 100
E1(with this example as the first input end of Switching Power Supply 100).Wherein, said the first ac input end P here
AC1It for example can be the wherein arbitrary end in two ac input ends having of AC/DC circuit module 110.
Similarly, an end of the second differential mode inductance 140 can be coupled in the second ac input end P of AC/DC circuit module 110
AC2On, and with the other end of the second differential mode inductance 140 another input P as whole Switching Power Supply 100
E2(with this example as the second input of Switching Power Supply 100).Wherein, said the second ac input end P here
AC2It for example can be the other end in two ac input ends having of AC/DC circuit module 110.
According to above description as can be known, can select any of two ac input ends of AC/DC circuit module 110 to be used as its first ac input end, and select these two ac input ends another be used as its second ac input end.Therefore, in actual applications, the first differential mode inductance 130 can be coupled on any ac input end of AC/DC circuit module 110, and the second differential mode inductance 140 be coupled on another ac input end of AC/DC circuit module 110.
Wherein, can rule of thumb be worth or by the test method select the first suitable differential mode inductance 130 and the second differential mode inductance 140.Those skilled in the art understand, and the principle of selection is: thus can test and avoid in circuit, causing too high noise peak by EMI smoothly so that the resonance frequency of switching power circuit satisfies pre-provisioning request.In a kind of specific application scenarios, for example be designed to the Switching Power Supply of LED lighting device power supply, for example the value of the first differential mode inductance 130 and the second differential mode inductance 140 can be chosen as so that the resonance frequency of circuit is lower than 150kHz.
In an example according to the Switching Power Supply of embodiment of the present utility model, the first differential mode inductance 130 and the second differential mode inductance 140 can be selected the larger inductance of induction reactance, with two incoming lines dwindling Switching Power Supply 110 (also namely, as shown in Figure 1 P
E1Road and P
E2The road) difference between the impedance in (be induction reactance at this), thus can suppress or reduce two imbalance problems between the EMI in the incoming line.This be because, the induction reactance of the differential mode inductance of increase is larger, then this differential mode inductance to its contribution of whole induction reactance in the line larger.Thus, in the induction reactance of the first differential mode inductance 130 and the second differential mode inductance 140 enough in the large situation, can so that the whole induction reactance in two incoming lines mainly determined by the induction reactance of added the first differential mode inductance 130 and the second differential mode inductance 140 respectively, thereby can dwindle two differences between the induction reactance in the incoming line by selecting the first differential mode inductance 130 and the second differential mode inductance 140 with suitable induction reactance.
The first differential mode inductance 130 and second differential mode inductance 140 of in actual applications, can be rule of thumb or selecting to have suitable induction reactance by the method for test.The induction reactance that it should be noted that differential mode inductance is normally along with frequency change, and its induction reactance generally can increase along with the rising of frequency.Therefore, when selecting differential mode inductance, can be preferably near actual operating frequency (also namely, required during actual the use frequency) the larger differential mode inductance of induction reactance.
Fig. 2 is the circuit block diagram of the another kind of exemplary configuration of schematically illustrated Switching Power Supply according to embodiment of the present utility model.As shown in Figure 2, Switching Power Supply 200 can also comprise the first resistance 150 that is connected in parallel on the first differential mode inductance 130 two ends and/or be connected in parallel on second resistance 160 at the second differential mode inductance 140 two ends except comprising AC/DC circuit module 110, Switching Power Supply main circuit module 120, the first differential mode inductance 130 and the second differential mode inductance 140.Wherein, Switching Power Supply 200 included AC/DC circuit module 110, Switching Power Supply main circuit module 120, the first differential mode inductance 130 and the second differential mode inductances 140 can have the 26S Proteasome Structure and Function identical with counterpart in the Switching Power Supply shown in Figure 1 100, and can reach similar technique effect, do not repeat them here.
Need to prove that any in the first resistance 150 and the second resistance 160 all can be independent resistance, also can be the resistance unit that is formed by a plurality of resistance series connection and/or coupled in parallel.
By above describing as can be known, in Switching Power Supply shown in Figure 1 100, if select two almost identical differential mode inductances of induction reactance to realize the first differential mode inductance 130 and the second differential mode inductance 140, and the induction reactance of these two differential mode inductances under certain frequency is enough large, then can be so that circuit P
E1And P
E2EMI than balance.Yet, even in this case (induction reactance of the first differential mode inductance 130 and the second differential mode inductance 140 is almost identical) when reaching capacity frequency, also may differ greatly between the first differential mode inductance 130 and the second differential mode inductance 140 induction reactance separately.Thus, by at the two ends of the first differential mode inductance 130 and/or the mode of the two ends parallel resistance of the second differential mode inductance 140, can regulate further difference between the induction reactance of two circuits by the resistance of selecting suitable resistance, and then can reach better EMI counterbalance effect.
Wherein, in one implementation, can be only at the first differential mode inductance 130 two ends or only in the second differential mode inductance 140 two ends parallel resistances.In another kind of implementation, also can be in the first differential mode inductance 130 two ends and the second differential mode inductance 140 two ends difference parallel resistance, wherein, the resistance of resistance in parallel can be identical respectively, also can be different.
Need to prove, in actual applications, can be rule of thumb or select the resistance of the first resistance 150 and/or the second resistance 160 by the method for test.For example, can be according to the poor resistance of determining the first resistance 150 and/or the second resistance 160 of induction reactance between the first differential mode inductance 130 when the saturation frequency and the second differential mode inductance 140.In an object lesson, the resistance of the first resistance 150 and/or the second resistance 160 can be several kilohms approximately.
In addition, be lower than 500kHz in frequency, the noise signal in the circuit generally shows as common-mode noise.In the conventional switch power supply, in order to reduce common-mode noise, usually in the AC/DC circuit module that the conventional switch power supply comprises, common mode inductance is set, for example be generally the common mode inductance of 2 series connection.In the above-mentioned Switching Power Supply according to embodiment of the present utility model, if the distance that lays respectively between the position of the differential mode inductance in two incoming lines of Switching Power Supply is enough little, also the common mode effect can be produced between these two inductance, thereby the reduction common-mode noise can be assisted.Therefore, in an example according to the Switching Power Supply of embodiment of the present utility model, the AC/DC circuit module 110 in the Switching Power Supply 100 and 200 can include only 1 common mode inductance.Than traditional Switching Power Supply, can save cost according to the above-mentioned Switching Power Supply of embodiment of the present utility model, and can do to get more miniaturization.
By above description as can be known, above-mentioned Switching Power Supply according to embodiment of the present utility model, it is by coupling respectively a differential mode inductance in two incoming lines of Switching Power Supply, so that above-mentioned two incoming line middle impedances differ less, thereby can reduce two differences between the EMI in the incoming line, so that balance relatively more between the EMI of the two.
It may be noted that the functional unit of the Switching Power Supply of above-described each embodiment of the utility model can meet the combination in any of utility model purpose.For brevity, do not describe in detail one by one in this detail to the various Switching Power Supplies that are combined to form.
In addition, embodiment of the present utility model also provides a kind of on-chip power formula LED fluorescent lamp, this on-chip power formula LED fluorescent lamp comprises Switching Power Supply mentioned above, also comprises lampshade, LED load unit, the first electrode, the second electrode, third electrode and the 4th electrode.Wherein, lampshade has the consistent shape of traditional fluorescent lamp tube shape that is complementary with the traditional fluorescent lamp seat, Switching Power Supply and LED load unit are packaged in lampshade inside, and Switching Power Supply is used for the driving LED load unit, the first electrode couples mutually with the first input end of Switching Power Supply, the second electrode couples mutually with described second input of Switching Power Supply, and third electrode and the 4th electrode short circuit.
Here, third electrode and the 4th electrode can be in lampshade short circuit, perhaps also can be outside lampshade short circuit.In addition, any in the first electrode, the second electrode, third electrode and the 4th electrode all can be arranged in the lampshade or lampshade outside.Perhaps, any in above-mentioned four electrodes also can partly be located in the lampshade, remainder is located at outside the lampshade.The concrete set-up mode of each electrode can be determined according to actual conditions (such as the electrode shape of lamp socket etc.), not repeat them here.
Above-mentioned on-chip power formula LED fluorescent lamp according to embodiment of the present utility model can address the problem.
As everyone knows, the traditional fluorescent lamp that uses in people's daily life generally has structure as shown in Figure 3A, and wherein, this traditional fluorescent lamp has 4 electrode P
1, P
2, P
3And P
4Fig. 3 B is the schematic diagram of the traditional fluorescent lamp seat that is complementary of schematically illustrated and traditional fluorescent lamp pipe as shown in Figure 3A.Shown in Fig. 3 B, k is switch, and b is inductance type ballast, and st is starter, and wherein starter st is coupled between n1 and the n2.This traditional fluorescent lamp seat has 4 electrode P '
1, P '
2, P '
3And P '
4In addition, l1 and l2 are two civil power incoming ends.For example, if any among l1 and the l2 is the live wire incoming end, then the another one among l1 and the l2 is the zero line incoming end.Fig. 3 C is the schematically illustrated schematic diagram that traditional fluorescent lamp pipe as shown in Figure 3A is coupled to the traditional fluorescent lamp seat shown in Fig. 3 B.For a person skilled in the art, the structure of traditional fluorescent lamp and lamp socket and operation principle are existing common practise, omit its detailed description at this.Here need to prove, when traditional fluorescent lamp pipe that will be as shown in Figure 3A is coupled to traditional fluorescent lamp seat shown in Fig. 3 B, not necessarily leave no choice but P
1With P '
1Join and with P
2With P '
2Join etc.For example, in other specific implementations, also can be with P '
2, P '
3And P '
4In any and P
1Link to each other.
Compare with traditional fluorescent lamp (also being fluorescent lamp), that the LED light fixture has is energy-conservation, the life-span long and the plurality of advantages such as environmental protection.Therefore, if the LED lamp can be used, can obtain above-mentioned each advantage in normal lighting.At present, many areas in the world, because building construction time a variety of causes such as morning, saving fund, the illuminating lamp of installing in a large amount of buildings still is traditional fluorescent lamp.Usually, if want these traditional fluorescent lamp are replaced by the LED lamp, then need to transform being layed in a large amount of lamp sockets in the building, circuit etc., not only engineering is huge, but also can expend substantial contribution.Therefore, use if can directly the LED lamp be inserted in the existing traditional fluorescent lamp seat, then realize easily the replacement to traditional fluorescent lamp.
Yet in the traditional fluorescent lamp seat, starter is easy-off, and ballast is difficult for removing.Therefore, use if directly existing LED lamp is inserted in the traditional fluorescent lamp seat, then because the LED lamp need to couple with inductance type ballast, meeting and then causes imbalance between the EMI in live wire and the zero line so that the impedance in live wire and the zero line has big difference.Also namely, the impedance in that circuit that couples mutually with inductance type ballast is large, EMI is less; And the impedance in that circuit that does not couple mutually with inductance type ballast is less, EMI is larger.
Describe an example of this on-chip power formula LED fluorescent lamp in detail below in conjunction with Fig. 4 A-4D.
Fig. 4 A is circuit and the structural representation that illustrates according to a kind of exemplary configuration of the on-chip power formula LED fluorescent lamp of embodiment of the present utility model.Shown in Fig. 4 A, on-chip power formula LED fluorescent lamp 400 comprises Switching Power Supply 410, lampshade 420, LED load unit 430, the first electrode 422, the second electrode 424, third electrode 426 and the 4th electrode 428.
Wherein, Switching Power Supply 410 can have above the 26S Proteasome Structure and Function in conjunction with Fig. 1 and described any one Switching Power Supply of Fig. 2.For example, Switching Power Supply 410 can comprise AC/DC circuit module 411, Switching Power Supply main circuit module 412, the first differential mode inductance 413 and the second differential mode inductance 414, and can optionally comprise the first resistance 415 that is coupled in the first differential mode inductance 413 two ends and/or be coupled in second resistance 416 at the second differential mode inductance 414 two ends.Wherein, each part can have with above in conjunction with the identical 26S Proteasome Structure and Function of the corresponding part of Fig. 1 and described any one Switching Power Supply of Fig. 2 in the Switching Power Supply 410, does not repeat them here.
Shown in Fig. 4 A, Switching Power Supply 410 and LED load unit 430 are packaged in lampshade 420 inside, and Switching Power Supply 410 is used for driving LED load unit 430.Wherein, LED load unit 430 for example can be the led module that comprises a plurality of LED lamp pearls.In addition, LED load unit 430 can have various shapes, and its shape can be determined according to actual needs.
In this example,, the end face of lampshade 420 is provided with the first input end P of the first electrode 422, the second electrode 424, third electrode 426 and the 4th electrode 428, the first electrodes 422 and Switching Power Supply 410
E41Couple mutually and extend outside the end face, the second input P of the second electrode 424 and Switching Power Supply 410
E42Couple mutually and extend outside the end face, third electrode 426 and the 4th electrode 428 also extend to outside the end face respectively at lampshade 420 interior short circuits.
When being coupled to the on-chip power formula LED fluorescent lamp 400 shown in Fig. 4 A in traditional daylight lamp holder, the first input end P of Switching Power Supply 410
E41With the second input P
E42Be used for the access civil power.In addition, the first input end P of Switching Power Supply 410
E41With the second input P
E42In any be used for coupling mutually with the ballast of traditional fluorescent lamp seat.
Fig. 4 B is the schematic appearance that the on-chip power formula LED fluorescent lamp 400 shown in Fig. 4 A is shown.Shown in Fig. 4 B, lampshade 420 has the consistent shape of traditional fluorescent lamp pipe (as shown in Figure 3A) shape that is complementary with the traditional fluorescent lamp seat, can make things convenient for, insert reliably in the traditional fluorescent lamp seat.
Fig. 4 C and 4D are the schematically illustrated schematic diagrams that on-chip power formula LED fluorescent lamp 400 shown in Fig. 4 B is coupled to the traditional fluorescent lamp seat.Wherein, in the example shown in Fig. 4 C, the second electrode 424 of on-chip power formula LED fluorescent lamp 400 couples mutually with Inductive ballast b; In the example shown in Fig. 4 D, the first electrode 422 of on-chip power formula LED fluorescent lamp 400 couples mutually with Inductive ballast b.
Shown in Fig. 4 C, when stating in the use on-chip power formula LED fluorescent lamp 400, the starter in the traditional fluorescent lamp seat replaces with conductor f.Wherein, this conductor f is coupled between the n1 and n2 point shown in Fig. 4 C, so that the first electrode 422 couples with third electrode 426 mutually through conductor f.With above similarly, the circuit l1 among Fig. 4 C and any one among the l2 can access live wire, another accesses zero line.
In a kind of preferred implementation, conductor f for example can be fuse, can guarantee the normal operation of circuit, can also play the effect of overcurrent protection simultaneously.In addition, in other implementations, conductor f also can be plain conductor etc.
In addition, the traditional fluorescent lamp seat can be the various lamp sockets with structure shown in Fig. 3 B, for example, and the lamp socket of traditional T8 daylight lamp holder or other models.Correspondingly, the traditional fluorescent lamp pipe for example can be traditional T8 fluorescent tube of being complementary of the model with the traditional fluorescent lamp seat or the fluorescent tube of other models.
Using in the example according to of the on-chip power formula LED fluorescent lamp 400 of embodiment of the present utility model, for example can adopt the connected mode of Fig. 4 C.Shown in Fig. 4 C, in this uses example, the circuit l1 line of starting to exchange fire, circuit l2 connecting to neutral line.In conjunction with Fig. 4 A as can be known, because third electrode 426 and the 4th electrode 428 short circuits, and third electrode 426 couples with the first electrode 422, so is equivalent to the first electrode 422 start to exchange fire line and the second electrode 424 connecting to neutral lines.Thus, on-chip power formula LED fluorescent lamp 400 can work.
The principle of Fig. 4 D and Fig. 4 C are similar, do not repeat them here.
By above description as can be known, by the starter in the traditional fluorescent lamp seat being replaced with the conductor such as fuse, plain conductor, use so that above-mentioned on-chip power formula LED fluorescent lamp can directly insert in the traditional fluorescent lamp seat, and do not need the traditional fluorescent lamp seat is carried out other transformations.And, because the differential mode inductance of connecting respectively before two inputs of Switching Power Supply in this on-chip power formula LED fluorescent lamp, so that also balance comparatively of the EMI in two incoming lines.
In addition, according to above describing and in conjunction with Fig. 4 A and Fig. 4 C as can be known, the EMI between two incoming lines of Switching Power Supply 410 mainly is because the induction reactance of ballast causes.Therefore, in an example, can select the induction reactance induction reactance of resonance frequency (for example) all to realize respectively the first differential mode inductance and the second differential mode inductance greater than two differential mode inductances of 1/4th of the induction reactance of this ballast, and the induction reactance of these two differential mode inductances equate or close.In addition, in another example, the differential mode inductance that can select the induction reactance induction reactance of actual operating frequency (for example) all to be far longer than the induction reactance of this ballast is realized respectively the first differential mode inductance and the second differential mode inductance.Thus, the induction reactance of ballast is less on the impact of the whole induction reactance in the incoming line, and this can be so that the difference between the induction reactance in two incoming lines be less, and then so that the balance comparatively of the EMI in two incoming lines.
It may be noted that the functional unit of the on-chip power formula LED fluorescent lamp of above-described each embodiment of the utility model can meet the combination in any of utility model purpose.For brevity, do not describe in detail one by one in this detail to the various on-chip power formula LED fluorescent lamps that are combined to form.
In addition, embodiment of the present utility model also provides another kind of on-chip power formula LED fluorescent lamp, this on-chip power formula LED fluorescent lamp comprises aforesaid any Switching Power Supply, also comprise lampshade, the LED load unit, the first electrode, the second electrode, third electrode and the 4th electrode, wherein, lampshade has the consistent shape of traditional fluorescent lamp tube shape that is complementary with the traditional fluorescent lamp seat, Switching Power Supply and LED load unit are packaged in lampshade inside, and Switching Power Supply is used for the driving LED load unit, the first electrode and the second electrode all couple mutually with the first input end of Switching Power Supply, third electrode and the 4th electrode short circuit, and the second input of Switching Power Supply is coupled to third electrode or the 4th electrode.
Here, third electrode and the 4th electrode can be in lampshade short circuit, perhaps also can be outside lampshade short circuit.In addition, any in the first electrode, the second electrode, third electrode and the 4th electrode all can be arranged in the lampshade or lampshade outside.Perhaps, any in above-mentioned four electrodes also can partly be located in the lampshade, remainder is located at outside the lampshade.The concrete set-up mode of each electrode can be determined according to actual conditions (such as the electrode shape of lamp socket etc.), not repeat them here.
Describe an example of this on-chip power formula LED fluorescent lamp in detail below in conjunction with Fig. 5 A-5C.
Fig. 5 A is circuit and the structural representation that illustrates according to the another kind of exemplary configuration of the on-chip power formula LED fluorescent lamp of embodiment of the present utility model.Shown in Fig. 5 A, on-chip power formula LED fluorescent lamp 500 comprises Switching Power Supply 510, lampshade 520, LED load unit 530, the first electrode 522, the second electrode 524, third electrode 526 and the 4th electrode 528.
Wherein, Switching Power Supply 510 can have above the 26S Proteasome Structure and Function in conjunction with Fig. 1 and described any one Switching Power Supply of Fig. 2.For example, Switching Power Supply 510 can comprise AC/DC circuit module 511, Switching Power Supply main circuit module 512, the first differential mode inductance 513 and the second differential mode inductance 514, and can also optionally comprise the first resistance 515 that is coupled in the first differential mode inductance 513 two ends and/or be coupled in second resistance 516 at the second differential mode inductance 514 two ends.Wherein, each part can have with above in conjunction with the identical 26S Proteasome Structure and Function of the corresponding part of Fig. 1 and described any one Switching Power Supply of Fig. 2 in the Switching Power Supply 510, does not repeat them here.
Shown in Fig. 5 A, Switching Power Supply 510 and LED load unit 530 are packaged in lampshade 520 inside, and Switching Power Supply 510 is used for driving LED load unit 530.Wherein, LED load unit 530 can have with above in conjunction with the described LED load unit of Fig. 4 A 430 identical structure, shape and function, does not repeat them here.
In this example, the end face of lampshade 520 is provided with the first input end P of the first electrode 522, the second electrode 524, third electrode 526 and the 4th electrode 528, the first electrodes 522 and Switching Power Supply 510
E51Couple mutually and extend outside the end face, the first input end P of the second electrode 524 and Switching Power Supply 410
E51Couple mutually and extend outside the end face, third electrode 526 and the 4th electrode 528 also extend to outside the end face respectively at lampshade 520 interior short circuits, and the second input P of Switching Power Supply 510
E52In lampshade 520, be coupled to third electrode 526.
When being coupled to the on-chip power formula LED fluorescent lamp 400 shown in Fig. 5 A in traditional daylight lamp holder, the first input end P of Switching Power Supply 510
E51With the second input P
E52Be used for the access civil power.In addition, the first input end P of Switching Power Supply 510
E51With the second input P
E52In any be used for coupling mutually with the ballast of traditional fluorescent lamp seat.
Wherein, lampshade 520 can have the consistent shape of traditional fluorescent lamp pipe (as shown in Figure 3A) shape that is complementary with the traditional fluorescent lamp seat, can make things convenient for, insert reliably in the traditional fluorescent lamp seat.
Fig. 5 B and 5C are the schematically illustrated schematic diagrams that on-chip power formula LED fluorescent lamp 500 shown in Fig. 5 B is coupled to the traditional fluorescent lamp seat.Wherein, in the example shown in Fig. 5 B, the second electrode 524 of on-chip power formula LED fluorescent lamp 500 couples mutually with Inductive ballast b; In the example shown in Fig. 5 C, the first electrode 522 of on-chip power formula LED fluorescent lamp 500 couples mutually with Inductive ballast b.
Shown in Fig. 5 B, when stating in the use on-chip power formula LED fluorescent lamp 500, the starter in the traditional fluorescent lamp seat is removed, and opens circuit so that be between n1 and the n2.With above similarly, the circuit l1 among Fig. 5 B and any one among the l2 can access live wire, another accesses zero line.
In addition, the traditional fluorescent lamp seat for example can be the various lamp sockets of traditional T8 daylight lamp holder or other models.Correspondingly, the traditional fluorescent lamp pipe for example can be traditional T8 fluorescent tube of being complementary of the model with the traditional fluorescent lamp seat or the fluorescent tube of other models.
Using in the example according to of the on-chip power formula LED fluorescent lamp 500 of embodiment of the present utility model, for example adopt the connected mode of Fig. 5 B.Shown in Fig. 5 B, in this uses example, the circuit l1 line of starting to exchange fire, circuit l2 connecting to neutral line.Thus, on-chip power formula LED fluorescent lamp 500 can work.
The principle of Fig. 5 C and Fig. 5 category-B seemingly do not repeat them here.
By above description as can be known, by removing the starter in the traditional fluorescent lamp seat, can be so that above-mentioned on-chip power formula LED fluorescent lamp directly inserts in the traditional fluorescent lamp seat to be used, and do not need the traditional fluorescent lamp seat is carried out other transformations.And, because the differential mode inductance of connecting respectively before two inputs of Switching Power Supply in this on-chip power formula LED fluorescent lamp, so that also balance comparatively of the EMI in two incoming lines.
In addition, with above similarly, in this example, can select the induction reactance induction reactance of actual operating frequency (for example) all to realize respectively the first differential mode inductance and the second differential mode inductance greater than the differential mode inductance of 1/4th phases of the induction reactance of this ballast, and the induction reactance of these two differential mode inductances equate or close; Perhaps, the differential mode inductance that can select the induction reactance induction reactance of actual operating frequency (for example) all to be far longer than the induction reactance of this ballast is realized respectively the first differential mode inductance and the second differential mode inductance.Thus, the induction reactance of ballast is less on the impact of the whole induction reactance in the incoming line, and this can be so that the difference between the induction reactance in two incoming lines be less, and then so that the balance comparatively of the EMI in two incoming lines.
It may be noted that the functional unit of the on-chip power formula LED fluorescent lamp of above-described each embodiment of the utility model can meet the combination in any of utility model purpose.For brevity, do not describe in detail one by one in this detail to the various on-chip power formula LED fluorescent lamps that are combined to form.
In the above in the description to the utility model specific embodiment, can in one or more other execution mode, use in identical or similar mode for the feature that a kind of execution mode is described and/or illustrated, combined with the feature in other execution mode, or the feature in alternative other execution mode.
Although the above discloses the utility model by the description to specific embodiment of the utility model, but, should be appreciated that those skilled in the art can design various modifications of the present utility model, improvement or equivalent in the spirit and scope of claims.These modifications, improvement or equivalent also should be believed to comprise in protection range of the present utility model.
At last, also need to prove, in this article, relational terms such as " left side " and " right side ", " first " and " second " etc. only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint and have the relation of any this reality or sequentially between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby not only comprise those key elements so that comprise process, method, article or the equipment of a series of key elements, but also comprise other key elements of clearly not listing, or also be included as the intrinsic key element of this process, method, article or equipment.Do not having in the situation of more restrictions, by the key element that limits statement " comprising ... " or " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
Claims (16)
1. a Switching Power Supply comprises AC/DC circuit module and the Switching Power Supply main circuit module that couples mutually with described AC/DC circuit module, it is characterized in that,
Described Switching Power Supply also comprises the first differential mode inductance and the second differential mode inductance, wherein, one end of described the first differential mode inductance couples mutually with the first ac input end of described AC/DC circuit module, the other end of described the first differential mode inductance is as the first input end of described Switching Power Supply, one end of described the second differential mode inductance couples mutually with the second ac input end of described AC/DC circuit module, and the other end of described the second differential mode inductance is as the second input of described Switching Power Supply.
2. Switching Power Supply according to claim 1 is characterized in that:
Be parallel with the first resistance between described the first differential mode inductance two ends; And/or
Be parallel with the second resistance between described the second differential mode inductance two ends.
3. Switching Power Supply according to claim 1 and 2 is characterized in that, comprises common mode inductance in the described AC/DC circuit module, and the quantity of included common mode inductance is 1 in the described AC/DC circuit module.
4. on-chip power formula LED fluorescent lamp, it is characterized in that described on-chip power formula LED fluorescent lamp comprises such as arbitrary described Switching Power Supply among the claim 1-3, also comprises lampshade, LED load unit, the first electrode, the second electrode, third electrode and the 4th electrode, wherein
Described lampshade has the consistent shape of traditional fluorescent lamp tube shape that is complementary with the traditional fluorescent lamp seat, it is inner that described Switching Power Supply and described LED load unit are packaged in described lampshade, and described Switching Power Supply is used for driving described LED load unit, described the first electrode couples mutually with the described first input end of described Switching Power Supply, described the second electrode couples mutually with described second input of described Switching Power Supply, and described third electrode and described the 4th electrode short circuit.
5. on-chip power formula LED fluorescent lamp according to claim 4 is characterized in that,
Described the first electrode, described the second electrode, described third electrode and described the 4th electrode are located on the end face of described lampshade, described the first electrode and described the second electrode all extend outside the end face of described lampshade, and in described third electrode and described the 4th electrode at least one extends to outside the end face of described lampshade.
6. according to claim 4 or 5 described on-chip power formula LED fluorescent lamps, it is characterized in that, described on-chip power formula LED fluorescent lamp is used for being coupled to the traditional fluorescent lamp seat, wherein, the described first input end of described Switching Power Supply and described the second input are used for the access civil power, in described first input end and described the second input any is used for coupling mutually with the ballast of described traditional fluorescent lamp seat, and the starter in the described traditional fluorescent lamp seat is replaced by conductor.
7. on-chip power formula LED fluorescent lamp according to claim 6 is characterized in that described conductor is fuse.
8. on-chip power formula LED fluorescent lamp according to claim 6 is characterized in that, the induction reactance of the induction reactance of described the first differential mode inductance and described the second differential mode inductance all is far longer than the induction reactance of described ballast.
9. on-chip power formula LED fluorescent lamp according to claim 6, it is characterized in that, the induction reactance of the induction reactance of described the first differential mode inductance and described the second differential mode inductance is all greater than 1/4th of the induction reactance of described ballast, and the induction reactance of described the first differential mode inductance equates with described the second differential mode inductance.
10. according to claim 4 or 5 described on-chip power formula LED fluorescent lamps, it is characterized in that described traditional fluorescent lamp seat is traditional T8 daylight lamp holder, the traditional fluorescent lamp pipe that described and described traditional fluorescent lamp seat is complementary is traditional T8 fluorescent tube.
11. on-chip power formula LED fluorescent lamp, it is characterized in that described on-chip power formula LED fluorescent lamp comprises such as arbitrary described Switching Power Supply among the claim 1-3, also comprises lampshade, LED load unit, the first electrode, the second electrode, third electrode and the 4th electrode, wherein
Described lampshade has the consistent shape of traditional fluorescent lamp tube shape that is complementary with the traditional fluorescent lamp seat, it is inner that described Switching Power Supply and described LED load unit are packaged in described lampshade, and described Switching Power Supply is used for driving described LED load unit, described the first electrode and described the second electrode all couple mutually with the described first input end of described Switching Power Supply, described third electrode and described the 4th electrode short circuit, and described second input of described Switching Power Supply is coupled to described third electrode or described the 4th electrode.
12. on-chip power formula LED fluorescent lamp according to claim 10 is characterized in that,
The above first electrode of end face and described the second electrode that described the first electrode, described the second electrode, described third electrode and described the 4th electrode are located at described lampshade all extend outside the end face of described lampshade, and in described third electrode and described the 4th electrode at least one extends to outside the end face of described lampshade.
13. according to claim 11 or 12 described on-chip power formula LED fluorescent lamps, it is characterized in that, described on-chip power formula LED fluorescent lamp is used for being coupled to the traditional fluorescent lamp seat, wherein, the described first input end of described Switching Power Supply and described the second input are used for the access civil power, in described first input end and described the second input any is used for coupling mutually with the ballast of described traditional fluorescent lamp seat, and the starter in the described traditional fluorescent lamp seat is removed.
14. on-chip power formula LED fluorescent lamp according to claim 13 is characterized in that the induction reactance of the induction reactance of described the first differential mode inductance and described the second differential mode inductance all is far longer than the induction reactance of described ballast.
15. on-chip power formula LED fluorescent lamp according to claim 13, it is characterized in that, the induction reactance of the induction reactance of described the first differential mode inductance and described the second differential mode inductance is all greater than 1/4th of the induction reactance of described ballast, and the induction reactance of described the first differential mode inductance equates with described the second differential mode inductance.
16. according to claim 11 or 12 described on-chip power formula LED fluorescent lamps, it is characterized in that described traditional fluorescent lamp seat is traditional T8 daylight lamp holder, the traditional fluorescent lamp pipe that described and described traditional fluorescent lamp seat is complementary is traditional T8 fluorescent tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220227115 CN202889223U (en) | 2012-05-18 | 2012-05-18 | Switch power source and LED fluorescent lamp with built-in power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220227115 CN202889223U (en) | 2012-05-18 | 2012-05-18 | Switch power source and LED fluorescent lamp with built-in power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202889223U true CN202889223U (en) | 2013-04-17 |
Family
ID=48080609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220227115 Expired - Fee Related CN202889223U (en) | 2012-05-18 | 2012-05-18 | Switch power source and LED fluorescent lamp with built-in power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202889223U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578751A (en) * | 2013-10-23 | 2015-04-29 | 中兴通讯股份有限公司 | Current control method, current control device and electromagnetic interference filter circuit |
-
2012
- 2012-05-18 CN CN 201220227115 patent/CN202889223U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578751A (en) * | 2013-10-23 | 2015-04-29 | 中兴通讯股份有限公司 | Current control method, current control device and electromagnetic interference filter circuit |
| CN104578751B (en) * | 2013-10-23 | 2019-04-26 | 中兴通讯股份有限公司 | A kind of current control method and device, electromagnetic interference filter circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204291454U (en) | LED lamp tube power driving circuit and LED lamp tube | |
| CN102155644B (en) | LED (light emitting diode) fluorescent lamp and fluorescent lamp connecting circuit | |
| CN102155642A (en) | LED (light emitting diode) daylight lamp and connecting circuit thereof | |
| CN101925229B (en) | Driving circuit device of LED lamp tube | |
| CN104202863A (en) | LED (Light-Emitting Diode) power supply circuit compatible with conventional fluorescent lamp ballast | |
| CN104703364B (en) | A kind of LED Christmans light strings wireless controller and its LED string | |
| CN202889223U (en) | Switch power source and LED fluorescent lamp with built-in power source | |
| CN203645890U (en) | LED power supply circuit capable of being compatible with traditional fluorescent lamp ballast | |
| CN201754641U (en) | Driving circuit device for LED lamp tube | |
| CN201866593U (en) | LED daylight lamp and connecting circuit thereof | |
| CN102155646B (en) | Light-emitting diode (LED) fluorescent lamp and connecting circuit thereof | |
| CN201866595U (en) | LED (light emitting diode) fluorescent lamp and fluorescent lamp connection circuit | |
| CN201866598U (en) | LED daylight lamp and connecting circuit thereof | |
| CN108055752A (en) | A kind of street lamp gateway based on ZIGBEE communications | |
| CN201866596U (en) | LED daylight lamp and connecting circuit thereof | |
| CN205014189U (en) | LED lamps and lanterns of middle part wiring | |
| CN102155643B (en) | LED (Light Emitting Diode) fluorescent lamp and fluorescent lamp connecting circuit | |
| CN201866594U (en) | LED daylight lamp and connecting circuit thereof | |
| CN215300983U (en) | Power supply control circuit for ceiling lamp | |
| CN207122778U (en) | Auxiliary power module and LED straight tubes lamp system and LED straight lamp groups | |
| CN202949594U (en) | Dimming system of light-emitting diode (LED) lamp | |
| CN201866597U (en) | LED daylight lamp and connecting circuit thereof | |
| CN103428954B (en) | Load driver and the light fixture including this load driver | |
| CN102155645B (en) | LED (light emitting diode) fluorescent lamp and fluorescent lamp connecting circuit | |
| CN204810599U (en) | All -purpose emitting diode fluorescent tube, electrical power generating system and emitting diode drive circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20170518 |