CN206908890U - A kind of circuit and LED straight lamps for installing detecting module - Google Patents

Abstract

The utility model discloses a kind of circuit for installing detecting module, it is configured in LED straight lamps, for detecting the installment state of the LED straight lamps and lamp socket, the installation detecting module includes on-off circuit, detection pulse generating module, control circuit, detection decision circuit and detection path circuit, wherein：The detection decision circuit coupling detection path circuit, with the signal on detecting detection path circuit；Detection decision circuit is also coupled to control circuit, and testing result signal is sent into control circuit；Pulse generating module coupling detection path circuit is detected, and pulse signal is produced when the installation detecting module enters detection-phase；Control circuit couples on-off circuit, for according to testing result signal latch testing result, on-off circuit to be transmitted or be reflected into by testing result；For on-off circuit according to testing result, decision makes on or off between the first installation sense terminal and the second installation sense terminal.

Description

A kind of circuit and LED straight lamps for installing detecting module

The application is the Application No. 201621344288.5 submitted on December 7th, 2016, a kind of entitled LED straight The divisional application of the utility application of spot.

Technical field

It the utility model is related to field of lighting appliances, and in particular to a kind of circuit and LED straight tubes for installing detecting module Lamp.

Background technology

LED illumination technology is positive fast-developing and instead of traditional incandescent lamp and fluorescent lamp.Compared to being filled with indifferent gas For the fluorescent lamp of body and mercury, LED straight lamps need not filling mercury.Therefore, various by seeming traditional fluorescent bulbs and lamp In family expenses or the illuminator of workplace that the illumination option such as pipe is dominated, LED straight lamps are it is hardly surprising that be increasingly becoming people Height expect illumination option.The advantages of LED straight lamps the durability comprising lifting and life-span and compared with low power consuming.Therefore, After considering all factors, LED straight lamps would is that the illumination option of escapable cost.

Known LED straight lamps generally comprise fluorescent tube, in fluorescent tube and the circuit board with light source, and located at fluorescent tube two The lamp holder at end, lamp holder is interior to be provided with power supply, is electrically connected between light source and power supply by circuit board.But existing LED is straight Spot still has following a few class quality problems to need to solve, such as circuit board is generally rigid plate, after fluorescent tube ruptures, especially in part When rupture, whole LED straight lamp remains in the state of straight tube, and user, which can be mistakenly considered fluorescent tube, to be used, so as to go Voluntarily install, easily cause to occur to leak electricity and electric shock accidents.Applicant in previous case, such as:In CN105465640U, Structural improvement mode corresponding to proposing.

And when LED straight lamps are Double-End Source, if one of both-end of LED straight lamps has inserted lamp socket and another When lamp socket is not yet inserted at end, if user touches the metal for being not inserted into lamp socket end or conductive part, it is possible to occur to touch The risk of electricity.To solve the problem, in scheme disclosed in patent CN106015996A, a kind of scheme of LED straight lamps is disclosed, its LED drive module in lamp includes a detecting module, is to decide whether that ending external drive signal flows through LED straight lamps, The detecting module has one first sense terminal and one second sense terminal, when flowing through the one of the first sense terminal and the second sense terminal When electric current is greater than or equal to a current value, detecting module conducting makes LED straight lamps operate in a conducting state；Detectd when flowing through first When one electric current of survey end and the second sense terminal is less than above-mentioned current value, detecting module cut-off makes LED straight lamps not led into one Logical state.For electronic circuit, it is preferably capable of that there is relatively simple control logic and control circuit, therefore above-mentioned side Case still leaves some room for improvement and necessity.

In view of above mentioned problem, the utility model set forth below and embodiment.

The content of the invention

Many embodiments of the summary description herein on " the utility model ".But the vocabulary " the utility model " is only For some embodiments (in spite of in claim) for describing to disclose in this description, rather than it is possible to Embodiment complete description.The some embodiments for being described below as each feature or aspect of " the utility model " can not With mode independence or merge to form a LED straight lamps or a portion.

The utility model provides a kind of circuit and LED straight lamps for installing detecting module, to solve the above problems.

The circuit of installation detecting module of the present utility model, is configured in LED straight lamps, for detecting the LED straight lamps With the installment state of lamp socket, the installation detecting module includes on-off circuit, detection pulse generating module, control circuit, detection Decision circuit and detection path circuit, wherein：The detection decision circuit coupling detection path circuit, to detect detection path Signal on circuit；Decision circuit coupling control circuit is detected, testing result signal is sent to control circuit；Detect pulse Generation module couples detect path circuit, and produce pulse signal when the installation detecting module enters detection-phase；Control Circuit couples on-off circuit, for according to testing result signal latch testing result, testing result being transmitted or being reflected into out Powered-down road；On-off circuit makes on or off between the first installation sense terminal and the second installation sense terminal according to testing result.

Alternatively, it is described detection pulse generating module include the first electric capacity, the second electric capacity and the 3rd electric capacity, first resistor, Second resistance and 3rd resistor, the first buffer and the second buffer, reverser, the first diode and the first OR gate, wherein： First electric capacity and first resistor are series between a driving voltage and reference potential, and its tie point couples the input of buffer； Second resistance is coupled to the input of a driving voltage and reverser；3rd resistor is coupled to the input and one of the second buffer Between reference potential；The positive ending grounding of first diode, negative terminal are also coupled to the input of the second buffer；One end of second electric capacity And the 3rd electric capacity one end the first buffer of coupling jointly output end, the other end of the second electric capacity connects the input of reverser, And the other end of the 3rd electric capacity then couples the input of the second buffer；The output end of the output end of reverser and the second buffer Couple the input of OR gate.

Alternatively, the detection pulse generating module includes：6th resistance, one end connect a driving voltage；4th electric capacity, One end connects the other end of the 6th resistance, and the other end ground connection of the 4th electric capacity；Schmitt trigger, there is an input and one Output end, the input connect the connection end of the 6th resistance and the 4th electric capacity, and the output end connects the detection path circuit；The Seven resistance, one end connect the connection end of the 6th resistance and the 4th electric capacity；Second transistor, have a base terminal, a collector terminal with One emitter-base bandgap grading end, the collector terminal connect the other end of the 7th resistance, emitter-base bandgap grading end ground connection；8th resistance, one end connect the second crystal The base terminal of pipe, and the other end connecting detection path circuit of the 8th resistance and the output end of the control circuit；The pole of Zener two Pipe, has an anode tap and a cathode terminal, anode tap ground connection, and the cathode terminal connects one that the 4th electric capacity is connected with the 6th resistance End.

Alternatively, the drive circuit in the power module of the LED straight lamps be switching dc to direct current transducer, and And the on-off circuit is the power switch of DC-DC converter, and the control circuit is the corresponding power switch Controller.

Alternatively, the detection decision circuit includes comparator, and the end of oppisite phase of the comparator, which receives, refers to level signal, just Input is connected to the detection path circuit, and output end is connected to the control circuit.

Alternatively, the detection decision circuit includes：Second diode, there is an anode tap and a cathode terminal, the anode End is connected to the detection path circuit；Second comparator, there is first input end, the second input and output end, this first Input connects a setting signal, and second input connects the cathode terminal of the second diode, and the output end of the second comparator It is connected to control circuit；3rd comparator, there is first input end, the second input and output end, first input end connection The cathode terminal of second diode, second input connects another setting signal, and the output end of the 3rd comparator is connected to control Circuit processed；Tenth resistance, one end connection driving voltage；11st resistance, one end connect the other end and the second ratio of the tenth resistance Compared with the second input of device, and the other end of the 11st resistance is grounded；5th electric capacity, with the 11st resistor coupled in parallel.

Alternatively, the on-off circuit includes a transistor, and its base terminal is connected with the control circuit, collector terminal and penetrates It is extreme to connect the first installation sense terminal and the second installation sense terminal respectively, according to testing result, make the first installation On or off between sense terminal and the second installation sense terminal.

Alternatively, the detection path circuit includes transistor and the 12nd resistance and the 13rd resistance, wherein：The crystalline substance Body pipe has base stage, collector and emitter-base bandgap grading, and emitter-base bandgap grading connects the detection pulse generating module；12nd resistance concatenates the transistor Between emitter-base bandgap grading and earth terminal, the 13rd resistance is serially connected between the collector of the transistor and the first installation sense terminal.

Alternatively, when the transistor receives detection pulse generating module pulse signal, the interior crystalline substance during pulse Body pipe turns on, using the signal on detecting detection path circuit as voltage signal.

The mode of connection of LED straight lamps of the present utility model is that both-end enters electricity, has the utility model in the LED straight lamps The circuit of described installation detecting module.

According to the technical solution of the utility model, in the case where LED straight lamps have one end to enter electricity, a control signal is produced To detect the conducting state of electric power loop and determine therefrom that whether LED straight lamps are properly installed on lamp socket, and then decision is It is no to be powered to LED straight lamps, help avoid causing LED straight lamps powered so as to the electric shock brought in the case where mistake is installed Risk.Further effect is subject to hereinafter in conjunction with embodiment possessed by above-mentioned non-usual optional mode Explanation.

Brief description of the drawings

Figure 1A is to be illustrated according to the application circuit square of the power supply module of the LED straight lamps of the utility model embodiment Figure；

Figure 1B is to be illustrated according to the application circuit square of the power supply module of the LED straight lamps of the utility model embodiment Figure；

Fig. 1 C are to be illustrated according to the application circuit square of the power supply module of the LED straight lamps of the utility model embodiment Figure；

Fig. 2A is the circuit diagram according to the rectification circuit of the utility model embodiment；

Fig. 2 B are the circuit diagram according to the rectification circuit of the utility model embodiment；

Fig. 2 C are the circuit diagram according to the rectification circuit of the utility model embodiment；

Fig. 2 D are the circuit diagram according to the rectification circuit of the utility model embodiment；

Fig. 2 E are the circuit diagram according to the rectification circuit of the utility model embodiment；

Fig. 2 F are the circuit diagram according to the rectification circuit of the utility model embodiment；

Fig. 3 A are to be illustrated according to the application circuit square of the power supply module of the LED straight lamps of the utility model embodiment Figure；

Fig. 3 B are the circuit diagram according to the detection pulse generating module of the utility model embodiment；

Fig. 3 C are the circuit diagram according to the detection decision circuit of the utility model embodiment；

Fig. 3 D are the circuit diagram according to the on-off circuit of the utility model embodiment；

Fig. 3 E are the circuit diagram according to the on-off circuit of the utility model embodiment；

Fig. 3 F are the circuit diagram according to the installation detecting module of the utility model embodiment；

Fig. 3 G are the circuit diagram according to the detecting path circuit of the utility model embodiment.

Embodiment

The utility model is on the basis of glass lamp, it is proposed that a kind of new LED straight lamps, to solve in background technology The problem of mentioning and above mentioned problem.It is understandable to enable above-mentioned purpose of the present utility model, feature and advantage to become apparent, under Face is described in detail with reference to accompanying drawing to specific embodiment of the utility model.The narration of following various embodiments of the utility model is only It is to be illustration to illustrate, is not meant as whole embodiments of the present utility model or the utility model is limited to specific reality Apply example.

Need to first illustrate in addition, herein in order to clearly state each utility model feature of this exposure and with multiple implementations The mode point of example is described as follows with regard to each embodiment.But do not mean that each embodiment is only capable of individually implementing.It is familiar with the skill of this area Art personnel can design together according to demand from be about to feasible implementation example collocation, or by different embodiments can band change According to design requirement, voluntarily band changes components/modules.In other words, the embodiment that this case is taught is not limited only to described in the following example Aspect, also include in the case of feasible, the band between each embodiment/components/modules changes and permutation and combination, in this conjunction First chat bright.

Though applicant in previous case, such as:In CN105465640A, it is proposed that reached using flexible circuit board Into the improvement mode for reducing electric leakage accident, section Example can with present application be combined using circuit mode will have it is more significant Effect.

Figure 1A is referred to, is the application circuit side according to the power supply module of the LED straight lamps of the utility model embodiment Block schematic diagram.The system of AC power 508 is providing ac supply signal.AC power 508 can be civil power, voltage range 100- 277V, frequency are 50 or 60Hz.Lamp tube drive circuit 505 receives the ac supply signal of AC power 508, and is converted into exchanging Drive signal is to be used as external drive signal.Lamp tube drive circuit 505 can be electric ballast, the signal of civil power to be turned Change into high frequency, the alternating current drive signal of high pressure.The species of common electronicses ballast, such as：Instantaneous starting type (Instant Start) electric ballast, preheating start-up type (Program Start) electric ballast, quick-starting direct (Rapid Start) Electric ballast etc., LED straight lamps of the present utility model are applicable.The voltage of alternating current drive signal is more than 300V, preferable voltage Scope is 400-700V；Frequency is more than 10kHz, and preferable frequency range is 20k-50kHz.LED straight lamps 500 receive external drive Signal, in the present embodiment, external drive signal are the alternating current drive signal of lamp tube drive circuit 505, and are driven to emit light. In the present embodiment, LED straight lamps 500 are the driving framework of single ended power supply, same one end lamp holder of fluorescent tube have the first pin 501, Second pin 502, to receive external drive signal.First pin 501, the second pin 502 of the present embodiment couple (that is, electric Connection or direct or indirect connection) to lamp tube drive circuit 505 to receive alternating current drive signal.

It is worth noting that, lamp tube drive circuit 505 is omissible circuit, therefore indicated in the drawings with dotted line.When When lamp tube drive circuit 505 omits, AC power 508 couples with the first pin 501, the second pin 502.Now, the first pin 501st, the second pin 502 receives the ac supply signal that AC power 508 is provided, to be used as external drive signal.

In addition to the application of above-mentioned single ended power supply, LED straight lamps 500 of the present utility model can also be applied to both-end list The circuit structure of the double pins of the circuit structure and both-end of pin.Wherein, the circuit structure of both-end list pin refers to Figure 1B, figure 1B is the application circuit block schematic diagram according to the power supply module of the LED straight lamps of the utility model embodiment.Compared to figure Shown in 1A, first pin 501, the second pin 502 of the present embodiment are respectively placed in the relative both-end of fluorescent tube of LED straight lamps 500 For lamp holder to form each single pin of both-end, the connection of remaining circuit and function are then identical with circuit shown in Figure 1A.The double pins of both-end Circuit structure refers to Fig. 1 C, and Fig. 1 C are the application electricity according to the power module of the LED straight lamps of the utility model embodiment Road block schematic diagram.Compared to shown in Figure 1A, the present embodiment also includes the 3rd pin 503 and the 4th pin 504.The one of fluorescent tube Hold lamp holder that there is the first pin 501, the second pin 502, other end lamp holder has the 3rd pin 503, the 4th pin 504.First Pin 501, the second pin 502, the 3rd pin 503 and the 4th pin 504 are coupled to lamp tube drive circuit 505 and handed over common reception Drive signal is flowed, to drive the LED component (not shown) in LED straight lamps 500 to light.

Under the circuit structure of the double pins of both-end, both-end list pin enters electrically, or both-end double pins enter electricity side Formula, configuring to realize the power supply of fluorescent tube for adjustment power module can be passed through.Wherein, under the entering electrically of both-end list pin (that is, both ends lamp holder respectively give opposed polarity external drive signal), in an exemplary embodiment, both-end lamp holder can have respectively One pin is that sky connects/suspension joint, for example, the second pin 502 and the 3rd pin 503 can be it is empty connect the/state of suspension joint, make fluorescent tube saturating Cross the first pin 501 and the 4th pin 504 receives external drive signal, use and make the power module inside fluorescent tube carry out follow-up Rectification and filter action；In another exemplary embodiment, the pin of both-end lamp holder can distinguish short circuit together, such as first connects Pin 501 is together with the short circuit of the second pin 502 on the lamp holder of the same side, and the 3rd pin 503 and the on the lamp holder of the same side The short circuit of four pin 504 together, so can receive positive polarity or negative pole also with the first pin 501 and the second pin 502 Property external drive signal, and using the external drive signal of the 3rd pin 503 and the 4th pin 504 reception opposite polarity, Use and make the power module inside fluorescent tube carry out follow-up rectification and filter action.Under the entering electrically of the double pins of both-end (i.e., Two pins of the same side lamp holder give the external drive signal of opposed polarity respectively), in an exemplary embodiment, the first pin 501 and second pin 502 can receive the external drive signal of opposite polarity, and the 3rd pin 503 can connect with the 4th pin 504 The external drive signal of opposite polarity is received, uses and makes the power module inside fluorescent tube carry out follow-up rectification and filter action.

Fig. 2A is referred to, is the circuit diagram according to the rectification circuit of the utility model embodiment.Rectification circuit 610 For bridge rectifier, the first commutation diode 611, the second commutation diode 612, the 3rd commutation diode 613 and are included Four commutation diodes 614, to carry out full-wave rectification to received signal.The positive pole coupling the of first commutation diode 611 Two rectification output ends 512, negative pole couple the second pin 502.The positive pole of second commutation diode 612 couples the second rectification output end 512, negative pole couples the first pin 501.The positive pole of 3rd commutation diode 613 couples the second pin 502, and negative pole coupling first is whole Flow output end 511.The positive pole of commutation diode 614 couples the first pin 501, and negative pole couples the first rectification output end 511.

When the signal that the first pin 501, the second pin 502 receive is AC signal, the operation description of rectification circuit 610 It is as follows.When AC signal is in positive half-wave, AC signal is sequentially through the first pin 501, the rectification of commutation diode 614 and first Flow into after output end 511, and sequentially flowed after the second rectification output end 512, the first commutation diode 611 and the second pin 502 Go out.When AC signal is in negative half-wave, AC signal is sequentially whole through the second pin 502, the 3rd commutation diode 613 and first Flow into after stream output end 511, and sequentially flowed out after the second rectification output end 512, the second commutation diode 612 and pin 501. Therefore, no matter AC signal is in positive half-wave or negative half-wave, it is whole that the positive pole of the rectified signal of rectification circuit 610 is respectively positioned on first Output end 511 is flowed, negative pole is respectively positioned on the second rectification output end 512.Illustrate according to aforesaid operations, rectification circuit 610 exports whole Signal is full wave rectified signal after stream.

When the first pin 501, the second pin 502 coupling dc source and when receiving direct current signal, the behaviour of rectification circuit 610 It is described as follows.When the first pin 501 couples the anode of dc source and the second pin 502 couples the negative terminal of dc source, Direct current signal sequentially flows into after the first pin 501, the rectification output end 511 of commutation diode 614 and first, and sequentially through second Flowed out after rectification output end 512, the first commutation diode 611 and the second pin 502.When the first pin 501 couples dc source Negative terminal and the second pin 502 coupling dc source anode when, AC signal is sequentially through the second pin 502, the 3rd rectification two Flowed into after the rectification output end 511 of pole pipe 613 and first, and sequentially through the second rectification output end 512, the second commutation diode 612 Flowed out with after the first pin 501.Similarly, it is whole no matter how direct current signal inputs through the first pin 501, the second pin 502 The positive pole of the rectified signal of current circuit 610 is respectively positioned on the first rectification output end 511, and negative pole is respectively positioned on the second rectification output end 512。

Therefore, no matter the received signal of rectification circuit 610 in the present embodiment is AC signal or direct current signal, Correct output rectified signal.

Fig. 2 B are referred to, are the circuit diagram according to the rectification circuit of the utility model embodiment.Rectification circuit 710 Comprising the first commutation diode 711 and the second commutation diode 712, to carry out halfwave rectifier to received signal.First The positive pole of commutation diode 711 couples the second pin 502, and negative pole couples the first rectification output end 511.Second commutation diode 712 positive pole couples the first rectification output end 511, and negative pole couples the first pin 501.Second rectification output end 512 regards actual answer With and can omit or be grounded.

Then illustrate that the operation of rectification circuit 710 is as follows.

When AC signal is in positive half-wave, AC signal is higher than second in the signal level that the first pin 501 inputs The signal level that pin 502 inputs.Now, the first commutation diode 711 and the second commutation diode 712 are in inverse inclined Cut-off state, rectification circuit 710 stop output rectified signal.When AC signal is in negative half-wave, AC signal is first The signal level that pin 501 inputs is less than the signal level in the input of the second pin 502.Now, the first commutation diode 711 And second commutation diode 712 be in along inclined conducting state, AC signal is whole via the first commutation diode 711, first Flow output end 511 and flow into, and flowed out by the second rectification output end 512 or another circuit or earth terminal of LED.According to above-mentioned Operating instruction, the rectified signal that rectification circuit 710 exports is half wave rectified signal.

Wherein, the first pin 501 of the rectification circuit shown in Fig. 2A and Fig. 2 B and the second pin 502 are changed to the 3rd and connect When pin 503 and four pins 504, you can as the second rectification circuit.In particular, in an exemplary embodiment, by Fig. 2A Shown full-wave rectifying circuit 610 is applied in the fluorescent tube of double-width grinding, and the first rectification circuit 510 is matched somebody with somebody with the second rectification circuit Putting can be as shown in Figure 2 C.Fig. 2 C are referred to, Fig. 2 C are the circuit diagram according to the rectification circuit of the utility model embodiment.

The framework of rectification circuit 640 is identical with the framework of rectification circuit 610, is all bridge rectifier.Rectification circuit 610 Including first to fourth commutation diode 611-614, it is configured as described in earlier figures 2A embodiments.Rectification circuit 640 includes the Five commutation diodes 641, the 6th commutation diode 642, the 7th commutation diode 643 and the 8th commutation diode 644, to right Received signal carries out full-wave rectification.The positive pole of 5th commutation diode 641 couples the second rectification output end 512, negative pole coupling Connect the 4th pin 504.The positive pole of 6th commutation diode 642 couples the second rectification output end 512, and negative pole couples the 3rd pin 503.The positive pole of 3rd commutation diode 613 couples the second pin 502, and negative pole couples the first rectification output end 511.The pole of rectification two The positive pole of pipe 614 couples the 3rd pin 503, and negative pole couples the first rectification output end 511.

In the present embodiment, rectification circuit 640 is corresponding configuration with 610, and both differences are only that rectification circuit 610 Input is coupled to the first pin 501 and the second pin 502, and the input of rectification circuit 640 be coupled to the 3rd pin 503 with 4th pin 504.In other words, the present embodiment is the circuit that the double pins of both-end are realized using the framework of two full-wave rectifying circuits Structure.

Further, in the rectification circuit of Fig. 2 C embodiments, although being realized with the configurations of the double pins of both-end, But in addition to the double pins of both-end enter the power supply mode of electricity, either it is single-ended enter electricity or entering for both-end list pin electrically can LED straight lamps are powered through the circuit structure of the present embodiment.Specific running is described as follows：

It is single-ended enter electricity in the case of, external drive signal can be put on the first pin 501 and the second pin 502, or It is applied on the 3rd pin 503 and the 4th pin 504.The first pin 501 and the second pin are put in outside drive signal When on 502, rectification circuit 610 can carry out full-wave rectification according to the function mode described in Fig. 2A embodiments to outside drive signal, And rectification circuit 640 will not then operate.On the contrary, put on the 3rd pin 503 and the 4th pin 504 in outside drive signal When upper, rectification circuit 640 can carry out full-wave rectification according to the function mode described in Fig. 2A embodiments to outside drive signal, and whole Current circuit 610 will not then operate.

In the case where both-end list pin enters electricity, external drive signal can put on the first pin 501 and the 4th pin 504, or put on the second pin 502 and the 3rd pin 503.The first pin 501 and the 4th is put in outside drive signal Pin 504, and when external drive signal is AC signal, during AC signal is in positive half-wave, AC signal sequentially passes through Flowed into after first pin 501, the 4th commutation diode 614 and the first rectification output end 511, and sequentially through the second rectification output end 512nd, flowed out after the 5th commutation diode 641 and the 4th pin 504.During AC signal is in negative half-wave, AC signal Sequentially flowed into after the 4th pin 504, the 7th commutation diode 643 and the first rectification output end 511, and it is sequentially whole through second Flowed out after stream output end 512, the second commutation diode 612 and the first pin 501.Therefore, no matter AC signal is in positive half-wave Or negative half-wave, the positive pole of rectified signal are respectively positioned on the first rectification output end 511, negative pole is respectively positioned on the second rectification output end 512. Illustrate according to aforesaid operations, the second commutation diode 612 and the collocation rectification of the 4th commutation diode 614 in rectification circuit 610 The 5th commutation diode 641 and the 7th commutation diode 643 in circuit 640 carry out full-wave rectification to AC signal, and defeated The rectified signal gone out is full wave rectified signal.

On the other hand, the second pin 502 and the 3rd pin 503, and external drive signal are put in outside drive signal For AC signal when, during AC signal is in positive half-wave, AC signal is sequentially through the 3rd pin 503, the 8th rectification two Flowed into after the rectification output end 511 of pole pipe 644 and first, and sequentially through the second rectification output end 512, the first commutation diode 611 Flowed out with after the second pin 502.During AC signal is in negative half-wave, AC signal is sequentially through the second pin the 502, the 3rd Flowed into after the rectification output end 511 of commutation diode 613 and first, and sequentially through the second rectification output end 512, the pole of the 6th rectification two Flowed out after the pin 503 of pipe 642 and the 3rd.Therefore, no matter AC signal is in positive half-wave or negative half-wave, the positive pole of rectified signal The first rectification output end 511 is respectively positioned on, negative pole is respectively positioned on the second rectification output end 512.Illustrate according to aforesaid operations, rectification circuit The 6th commutation diode in the first commutation diode 611 and the 3rd commutation diode 613 collocation rectification circuit 640 in 610 642 and the 8th commutation diode 644 to AC signal carry out full-wave rectification, and export rectified signal for full-wave rectification letter Number.

In the case where the double pins of both-end enter electricity, rectification circuit 610 and 640 other runnings can refer to above-mentioned Fig. 2A and implement The explanation of example, is repeated no more in this.Wherein, signal can be defeated in the first rectification after rectification caused by rectification circuit 610 and 640 Go out after end 511 is superimposed with the second rectification output end 512 circuit exported to rear end.

In an exemplary embodiment, the configuration of rectification circuit 510 ' can be as shown in Figure 2 D.Fig. 2 D are referred to, according to Fig. 2 D The circuit diagram of the rectification circuit of the utility model embodiment.Rectification circuit 910 includes first to fourth commutation diode 911-914, it is configured as described in earlier figures 2A embodiments.In the present embodiment, rectification circuit 910 also includes the 5th rectification two The commutation diode 916 of pole pipe 915 and the 6th.The positive pole of 5th commutation diode 915 couples the second rectification output end 512, negative pole Couple the 3rd pin 503.The positive pole of 6th commutation diode 916 couples the 3rd pin 503, and negative pole couples the first rectification output end 511.4th pin 504 is floating in this.

In particular, the rectification circuit 510 ' of the present embodiment, which can be considered, the whole of three groups of bridge arms (bridge arm) unit Current circuit, every group of bridge arm unit can provide an input signal receiving terminal.For example, the first commutation diode 911 and the 3rd Commutation diode 913 forms the first bridge arm unit, its corresponding signal received on the second pin 502；Second commutation diode 912 The second bridge arm unit is formed with the 4th commutation diode 914, its corresponding signal received on the first pin 501；And the 5th is whole Flow the commutation diode 916 of diode 915 and the 6th and form the 3rd bridge arm unit, its corresponding signal received on the 3rd pin 503. Wherein, as long as three groups of bridge arm unit two of which, which receive opposite polarity AC signal, can be carried out full-wave rectification.Base this, Under the configuration of the rectification circuit of Fig. 2 E embodiments, it is same it is compatible it is single-ended enter electricity, both-end list pin enter electricity and both-end is double connects Pin enters the power supply mode of electricity.Specific running is described as follows：

It is single-ended enter electricity in the case of, external drive signal is put on the first pin 501 and the second pin 502, now First to fourth commutation diode 911-914 running as described in earlier figures 2A embodiments, and the 5th commutation diode 915 with 6th commutation diode 916 is inoperative.

In the case where both-end list pin enters electricity, external drive signal can put on the first pin 501 and the 3rd pin 503, or put on the second pin 502 and the 3rd pin 503.The first pin 501 and the 3rd is put in outside drive signal Pin 503, and when external drive signal is AC signal, during AC signal is in positive half-wave, AC signal sequentially passes through Flowed into after first pin 501, the 4th commutation diode 914 and the first rectification output end 511, and sequentially through the second rectification output end 512nd, flowed out after the 5th commutation diode 915 and the 3rd pin 503.During AC signal is in negative half-wave, AC signal Sequentially flowed into after the 3rd pin 503, the 6th commutation diode 916 and the first rectification output end 511, and it is sequentially whole through second Flowed out after stream output end 512, the second commutation diode 912 and the first pin 501.Therefore, no matter AC signal is in positive half-wave Or negative half-wave, the positive pole of rectified signal are respectively positioned on the first rectification output end 511, negative pole is respectively positioned on the second rectification output end 512. Illustrate according to aforesaid operations, the second commutation diode 912, the 4th commutation diode 914 in rectification circuit 910, the 5th rectification The commutation diode 916 of diode 915 and the 6th carries out full-wave rectification to AC signal, and the rectified signal exported is all-wave Rectified signal.

On the other hand, the second pin 502 and the 3rd pin 503, and external drive signal are put in outside drive signal For AC signal when, during AC signal is in positive half-wave, AC signal is sequentially through the 3rd pin 503, the 6th rectification two Flowed into after the rectification output end 511 of pole pipe 916 and first, and sequentially through the second rectification output end 512, the first commutation diode 911 Flowed out with after the second pin 502.During AC signal is in negative half-wave, AC signal is sequentially through the second pin the 502, the 3rd Flowed into after the rectification output end 511 of commutation diode 913 and first, and sequentially through the second rectification output end 512, the pole of the 5th rectification two Flowed out after the pin 503 of pipe 915 and the 3rd.Therefore, no matter AC signal is in positive half-wave or negative half-wave, the positive pole of rectified signal The first rectification output end 511 is respectively positioned on, negative pole is respectively positioned on the second rectification output end 512.Illustrate according to aforesaid operations, rectification circuit The first commutation diode 911, the 3rd commutation diode 913, the 5th commutation diode 915 and the 6th commutation diode in 910 916 pairs of AC signals carry out full-wave rectification, and the rectified signal exported is full wave rectified signal.

In the case where the double pins of both-end enter electricity, the running of first to fourth commutation diode 911~914 can refer to above-mentioned The explanation of Fig. 2A embodiments, is repeated no more in this.If in addition, the signal polarity of the 3rd pin 503 is identical with the first pin 501, Then the running of the 5th commutation diode 915 and the 6th commutation diode 916 is similar to the second commutation diode 912 and the 4th rectification Diode 914 (that is, the first bridge arm unit).On the other hand, if the signal polarity of the 3rd pin 503 is identical with the second pin 502, Then the running of the 5th commutation diode 915 and the 6th commutation diode 916 is similar to the first commutation diode 911 and the 3rd rectification Diode 913 (that is, the second bridge arm unit).

Fig. 2 E are referred to, Fig. 2 E are the circuit diagram according to the rectification circuit of the utility model embodiment.Fig. 2 E with Fig. 2 D are roughly the same, and both differences are that the input of Fig. 2 E the first rectification circuit 610 more couples end points change-over circuit 941. Wherein, the end points change-over circuit 941 of the present embodiment includes fuse 947 and 948.The one end of fuse 947 couples the first pin 501, the other end is coupled to conode (that is, the first bridge arm unit of the second commutation diode 912 and the 4th commutation diode 914 Input).The one end of fuse 948 couples the second pin 502, and the other end is coupled to the first commutation diode 911 and the 3rd whole Flow the conode (that is, the input of the second bridge arm unit) of diode 913.Thereby, when the first pin 501 and the second pin 502 When any electric current flowed through is higher than the rated current of fuse 947 and 948, fuse 947 and 948 will accordingly fuse and open Road, thereby reach the function of overcurrent protection.In addition, in the case of fuse 947 and 948 only one of them fusing (such as excessively stream situation only occur that of short duration time eliminates), if entering the power supply mode of electricity using the double pins of both-end to drive lamp Pipe, then the rectification circuit of the present embodiment can also be after the elimination of excessively stream situation, the powering mode based on both-end list pin and lasting fortune Make.

Fig. 2 F are referred to, Fig. 2 F are the circuit diagram according to the rectification circuit of the utility model embodiment.Fig. 2 F with Fig. 2 D are roughly the same, and both differences are that Fig. 2 F two pins 503 and 504 are connected to one by thin (e.g., copper) wire 917 Rise.For earlier figures 2D embodiments, when entering electricity using both-end list pin, no matter external drive signal is consequently exerted at 3rd pin 503 or the 4th pin 504, the rectification circuit of the present embodiment all can normal operation.In addition, when the 3rd pin 503 with The mistake access of 4th pin 504 it is single-ended enter electricity lamp socket when, thin (copper) wire 917 of the present embodiment can reliably fuse, because This remains to maintain normal rectification to work when fluorescent tube turns back to correct lamp socket using the straight lamp of this rectification circuit.

From the foregoing, the rectification circuit of Fig. 2 C to Fig. 2 F embodiments can it is compatible it is single-ended enter electricity, both-end list pin enter electricity And the double pins of both-end enter the situation of electricity, and then improve the application environment compatibility of integral LED straight lamp.In addition, consider From the point of view of being laid out situation to actual circuit, the circuit configuration of Fig. 2 D embodiment inside fluorescent tube only needs to set three pads to connect Lamp holder pin, the lifting for overall process yield have significant contribution corresponding to being connected to.

Fig. 3 A are referred to, are the application circuit side according to the power supply module of the LED straight lamps of the utility model embodiment Block schematic diagram.The LED straight lamps of the present embodiment include the first rectification circuit 510, filter circuit 520 and also increase installation and detect mould Block 2520, wherein power module can also include the members of LED illumination module 530.Detecting module 2520 is installed through first Sense terminal 2521 is installed and couples the first rectification circuit 510, and filter circuit 520 is coupled through the second installation sense terminal 2522.Peace Dress detecting module 2520 detects the signal for flowing through the first installation sense terminal 2521 and the second installation sense terminal 2522, and according to detecting As a result decide whether that ending external drive signal flows through LED straight lamps.When LED straight lamps are not yet formally installed on lamp socket, peace Dress detecting module 2520 can detect less current signal and judge that signal flows through too high impedance, now installs detecting module 2520 cut-offs stop operation LED straight lamps.If it is not, installation detecting module 2520 judges that LED straight lamps are correctly installed on lamp socket On, installation detecting module 2520 maintains conducting to make LED straight lamp normal operatings.That is, when flow through it is described first installation sense terminal with And an electric current of the second installation sense terminal, when be greater than or equal to set-mounted electric current (or a current value), mould is detected in installation Block judges that LED straight lamps are correctly installed on lamp socket and turned on, and LED straight lamps is operated in a conducting state；It is described when flowing through When one electric current of the first installation sense terminal and the second installation sense terminal is less than described set-mounted electric current (or current value), Installation detecting module judges that LED straight lamps are not installed on lamp socket correctly and ended, and LED straight lamps is not turned on shape into one State.In other words, installation impedance of the detecting module 2520 based on detecting judges on or off, operates in LED straight lamps and leads It is logical or into not on-state.Thereby, user can be avoided when LED straight lamps are not yet correctly installed on lamp socket because of false touch LED straight lamps current-carrying part and the problem of get an electric shock.

In another exemplary embodiment, because when human contact's fluorescent tube, the impedance of human body can cause on electric power loop Equiva lent impedance changes, and installation detecting module 2520 can judge whether user contacts by the voltage change on detecting electric power loop Fluorescent tube, it can equally realize above-mentioned electroshock-proof function.In other words, in the utility model embodiment, detecting module is installed 2520 can pass through detecting electric signal (including voltage or electric current) to judge whether fluorescent tube is properly installed and whether is user The current-carrying part of false touch fluorescent tube in the case where fluorescent tube is not installed correctly.

Fig. 3 B are referred to, are the circuit diagram according to the detection pulse generating module of the utility model embodiment.Inspection Survey pulse generating module 2640 include electric capacity 2642 (or first capacitor), 2645 (or second capacitors) and 2646 (or Claim the 3rd capacitor), resistance 2643 (or first resistor device), 2647 (or second resistance devices) and 2648 (or the 3rd electricity Hinder device), buffer (buffer) 2644 (or first buffer) and 2651 (or second buffers), reverser 2650, two Pole pipe 2649 (or being the first diode) and OR gate (OR gate) 2652 (or being the first OR gate).Using or operating In, electric capacity 2642 and resistance 2643 are series at a driving voltage (such as referred to as VCC, and often being ordered as a high levle) and reference Between current potential (herein using the current potential on ground as embodiment), its tie point couples the input of buffer 2644.The coupling of resistance 2647 It is connected to the input of a driving voltage (can be described as VCC) and reverser 2650.Resistance 2648 is coupled to the input of buffer 2651 Between end and a reference potential (herein using the current potential on ground as embodiment).The positive ending grounding of diode, negative terminal are also coupled to buffer The input of device 2651.One end of electric capacity 2645 and 2646 one end couple the output end of buffer 2644, electric capacity 2645 jointly The other end connect the input of reverser 2650, and the other end of electric capacity 2646 then couples the input of buffer 2651.Instead The input of the output end coupling OR gate 2652 of output end and buffer 2651 to device 2650.It is noted that this case this In specification, current potential its " high levle " is relative to for another current potential in circuit or certain reference potential with " low level " (can be described as " high level " and " low level " sometimes), and again can be respectively as " logic high levle " and " logic low level ".

When LED straight lamps one end lamp holder insertion lamp socket and other end lamp holder human body in electrical contact or LED straight lamps it is double When end lamp holder inserts lamp socket, LED straight lamps are powered.Now, installation detecting module enters detection-phase.Electric capacity 2642 and resistance 2643 tie point level is at the beginning high (being equal to driving voltage VCC), is gradually reduced after with the time, is finally down to zero.It is slow The input coupling capacitance 2642 of device 2644 and the tie point of resistance 2643 are rushed, therefore exports high levle signal at the beginning, and When the tie point level of electric capacity 2642 and resistance 2643 is down to low logic and judges level, low level signal is changed into.It is it is, slow Rush device 2644 and produce an input pulse signal, persistently maintain low level (stopping exporting the input pulse signal) afterwards.It is described The pulse width of input pulse signal is equal to (initial setting) time cycle, and the time cycle is by the appearance of electric capacity 2642 Value and the resistance of resistance 2643 determine.

Then illustrate that buffer 2644 produces the operation in the setting time cycle of pulse signal.Due to electric capacity 2645 and resistance 2647 one end is equal to driving voltage VCC, therefore the connection end of electric capacity 2645 and resistance 2647 is also high levle.It is in addition, electric One end ground connection of resistance 2648, one end of electric capacity 2646 receive the pulse signal of buffer 2644.So electric capacity 2646 and resistance 2648 connection end in high levle at the beginning, then with the time it is gradual on be down to zero and (store and be equal or close to time electric capacity Driving voltage VCC voltage).Therefore, reverser 2650 exports low level signal, and buffer 2651 then exports high levle letter Number, and OR gate 2652 is exported high levle signal (the first pulse signal) in pulse signal output end 2541.Now, testing result Latch cicuit 2560 latches testing result for the first time according to testing result signal and pulse signal.When electric capacity 2646 and resistance When the level of 2648 connection end is down to low logic and judges level, buffer 2651 switchs to export low level signal, and makes OR gate 2652 export low level signal (stopping the first pulse signal of output) in pulse signal output end 2541.What OR gate 2652 was exported The pulsewidth of pulse signal is determined by the capacitance of electric capacity 2646 and the resistance of resistance 2648.

Then the operation being illustrated in after the stopping output pulse signal of buffer 2644, the i.e. operation into the operational phase. Because electric capacity 2646 stores the voltage close to driving voltage VCC, thus in buffer 2644 output switched to by high levle it is low The moment of level, electric capacity 2646 and the level of the connection end of resistance 2648 can be less than zero, and fast to electric capacity via diode 2649 Speed charges and the level of connection end is retracted zero.Therefore, buffer 2651 still maintains to export low level signal.

On the other hand, moment of low level is switched to by high levle in the output of buffer 2644, one end of electric capacity 2645 Level reduces by zero by driving voltage VCC moments, and the connection end for making electric capacity 2645 and resistance 2647 is low level.Reverser 2650 Output signal switchs to high levle, and OR gate is exported high levle (the second pulse signal).Now, testing result latch cicuit 2560 Testing result is latched according to testing result signal and pulse signal for the second time.Then, resistance 2647 charges to electric capacity 2645, makes electricity The level for holding the connection end of 2645 and resistance 2647 is gradually increasing with the time and arrives and be equal to driving voltage VCC.When appearance 2645 and electricity When the level of the connection end of resistance 2647 rises paramount logic judgment level, reverser 2650 exports low level once again, and makes OR gate 2652 stop the second pulse signal of output.The pulsewidth of second pulse signal is by the capacitance of electric capacity 2645 and the resistance of resistance 2647 Determined.

As described above, detection pulse generating module 2640 can produce the pulse signal-the of two high levles in detection-phase One pulse signal and the second pulse signal, are exported by pulse signal output end 2541, and the first pulse signal and the second pulse A setting time interval is spaced between signal, setting time interval is mainly by the capacitance of electric capacity 2642 and the resistance of resistance 2643 To determine.

And entering the operational phase after detection-phase, detection pulse generating module 2640 no longer produces pulse signal, and ties up It is low level to hold pulse signal output end 2541.

Fig. 3 C are referred to, are the circuit diagram according to the detection decision circuit of the utility model embodiment.Detection is sentenced Determine circuit 2670 and include comparator 2671 (or first comparator) and resistance 2672 (or the 5th resistor).Comparator 2671 end of oppisite phase, which receives, refers to level signal Vref, and non-oppisite phase end is through the ground connection of resistance 2672 and couples switch coupling end simultaneously 2581.Please referring also to Fig. 3 A, the signal that on-off circuit 2580 is flowed into by the first installation sense terminal 2521 can couple via switch End 2581 exports and flows through resistance 2672.When the electric current for flowing through resistance 2672 it is excessive (that is, greater than or equal to set-mounted electric current, Such as：Current value 2A) and the level on resistance 2672 (is may correspond to described two when being higher than the level for referring to level signal Vref Lamp holder is correctly inserted into the lamp socket), the testing result signal of the generation high levle of comparator 2671 is simultaneously defeated by testing result end 2571 Go out.For example, when LED straight lamps are correctly installed on lamp socket, comparator 2671 can export high levle in testing result end 2571 Testing result signal.Level signal Vref is referred to when the electric current deficiency for flowing through resistance 2672 is higher than the level on resistance 2672 Level when (may correspond to only one of which lamp holder and be correctly inserted into the lamp socket), comparator 2671 produce low level detection Consequential signal is simultaneously exported by testing result end 2571.For example, when LED straight lamps are not correctly installed on lamp socket, or one end peace When loaded on lamp socket, the other end is through human body grounding, electric current makes comparator 2671 export low standard in testing result end 2571 by too small The testing result signal of position.

Fig. 3 D are referred to, are the circuit diagram according to the on-off circuit of the utility model embodiment.On-off circuit 2680 can include a transistor (transistor), such as bipolar junction transistors 2681 (or the first transistor) conduct One power transistor (power transistor).Power transistor can handle high current and power, be particularly used to switch electricity Lu Zhong.Collector coupling the first installation sense terminal 2521 of bipolar junction transistors 2681, base stage coupling testing result latch end 2561, and emitter-base bandgap grading switch coupling end 2581.When detection pulse generating module 2640 produces the first pulse signal or the second pulse letter Number when, of short duration conducting is detected detection decision circuit 2670, to determine testing result by bipolar junction transistors 2681 Latch signal is high levle or low level.High levle is exported when testing result latch cicuit 2660 latches end 2561 in testing result Testing result latch signal when, bipolar junction transistors 2681 make conducting the first installation sense terminal 2521 and second Turned between installation sense terminal 2522.Low level is exported when testing result latch cicuit 2660 latches end 2561 in testing result Testing result latch signal when, bipolar junction transistors 2681 make cut-off the first installation sense terminal 2521 and second End between installation sense terminal 2522.

Because external drive signal is AC signal, when being detected in order to avoid detection decision circuit 2670, external drive letter Number level just zero crossings cause detect mistake.Therefore, detect pulse generating module 2640 and produce the first pulse letter Number and the second pulse signal so that detection decision circuit 2670 detects twice, the standard of external drive signal during avoiding single from detecting Position is just the zero crossings the problem of.Preferably, the generation time of the first pulse signal and the second pulse signal difference is not institute And the 180 degree phase difference of external drive signal described in non-corresponding the integer multiple of the cycle half of external drive signal is stated, i.e., Integer multiple.In this way, when one of the first pulse signal and the second pulse signal produce, if unfortunate external drive signal is zero External drive signal can be avoided also in zero crossings near point, during another generation.

The generation time of above-mentioned first pulse signal and the second pulse signal is poor, i.e., setting time interval can be with formula table Show as follows：

Setting time interval=(X+Y) (T/2)

Wherein, T is the cycle of external drive signal, and X is integer more than or equal to zero, 0<Y<1.

The preferable scopes of Y are between 0.05-0.95, between more preferably 0.15-0.85.

Furthermore when entering detection-phase in order to avoid installation detecting module, driving voltage VCC level is too low to be caused to pacify The circuit logic misjudgment of dress detecting module is begun to ramp up.Driving voltage is may be set in the generation of the first pulse signal VCC is reached or produced during higher than a predetermined level, driving voltage VCC is detected decision circuit 2670 just after reaching enough levels Carry out, to avoid the circuit logic misjudgment of the caused installation detecting module of level deficiency.

Understand according to the above description, when LED straight lamps one end lamp holder insertion lamp socket and other end lamp holder is suspension joint or electricity Property contact human body when, make the testing result signal of detection decision circuit output low level because impedance is big.Testing result latches electricity The detection of low level is latched into the testing result signal of low level according to the pulse signal of detection pulse generating module in road As a result latch signal, and also maintain testing result when the operational phase.In this way, on-off circuit can be made to maintain cut-off and avoid continuing It is powered.It so can also avoid human electric shock possible, so as to meet the requirement of safety.And when the both ends lamp of LED straight lamps Head is when being correctly inserted into lamp socket, makes the detection of detection decision circuit output high levle because the impedance of LED straight lamps circuits itself is small Consequential signal.Testing result latch cicuit is according to testing result signal of the pulse signal to high levle for detecting pulse generating module The testing result latch signal of high levle is latched into, and testing result is also maintained when the operational phase.In this way, switch can be made Circuit maintains conducting and is persistently powered, and makes the normal operating when operational phase of LED straight lamps.

In other words, in certain embodiments, when the lamp holder insertion lamp socket described in one end of the LED straight lamps is another When lamp holder described in one end is suspension joint or human body in electrical contact, the testing result letter of the detection decision circuit input low level Number the testing result latch cicuit is arrived, then the detection pulse generating module exports a low level signal and tied to the detection Fruit latch cicuit, make a testing result latch signal of the testing result latch cicuit output low level so that the switch electricity Road is ended, wherein the cut-off of the on-off circuit makes to end between the first installation sense terminal and the second installation sense terminal, Even if also the LED straight lamps enter a not on-state.

And in certain embodiments, when two lamp holder of the LED straight lamps is correctly inserted into the lamp socket, the inspection The testing result signal of decision circuit input high levle is surveyed to the testing result latch cicuit, locks the testing result A testing result latch signal of circuit output high levle is deposited so that the on-off circuit turns on, wherein the on-off circuit is led It is logical to make to turn between the first installation sense terminal and the second installation sense terminal, even if also the LED straight lamps operate in one Conducting state.

It is worth noting that, the pulsewidth of pulse signal caused by detection pulse generating module in 10us between 1ms, its Effect only when LED straight lamps are powered moment, makes on-off circuit turn on the of short duration time using this pulse signal.So can be with A pulse current is produced, detection decision circuit is flowed through and carries out detection judgement.Because it is caused be the pulse of short time and long-time Turn on non-, Danger Electric shock risk can't be triggered.Furthermore testing result latch cicuit also maintains testing result when the operational phase, no The problem of changing the testing result previously latched because circuit state changes again, and avoiding testing result from changing and cause.And pacify Filling detecting module (i.e. on-off circuit, detection pulse generating module, testing result latch cicuit and detect decision circuit) can be with It is integrated into chip, can be so embedded into circuit, the circuit cost and volume of installation detecting module can be saved.

Though applicant in previous case, such as:In CN106015996A, it is proposed that using detecting pulse generating module The first pulse signal and the second pulse signal are produced so that detection decision circuit carries out detection judgement, applicant is when implementing to this The embodiment of scheme has carried out further improvement, it is intended to reduces the volume of detecting module and further improves what detection judged Precision.Next the detailed improved embodiment of description.

Fig. 3 E are referred to, are the detection decision circuit schematic diagram according to the utility model embodiment.Detect decision circuit 2770 include：One resistance 2774 (the 9th resistance), one end connect the emitter-base bandgap grading end of transistor 2782, and the other end of resistance 2774 Connect LED power loop the other end (such as：Second installation sense terminal 2522)；One diode 2775 (the second diode), tool There are an anode tap and a cathode terminal, the anode tap connects one end of resistance 2744；One comparator 2772 (the second comparator), has One first input end, one second input and an output end, one setting signal of first input end connection (such as：Reference voltage Vref, it is 1.3V in the present embodiment, right not limited to this), second input connects the cathode terminal of diode 2775, and comparator The frequency input of 2772 output end connection D flip-flop 2762；One comparator 2773 (the 3rd comparator), have one first Input, one second input and an output end, the first input end connect the cathode terminal of diode 2775, second input Connect another setting signal (such as：Another reference voltage Vref, it is 0.3V in the present embodiment, right not limited to this), and comparator Output end connection D flip-flop 2762 frequency input；One resistance 2776 (the tenth resistance), one end connect driving electricity Pressure；One resistance 2777 (the 11st resistance), the second input of the other end and comparator 2772 of one end connection resistance 2776, and The other end ground connection of resistance 2777；And an electric capacity 2778 (the 5th electric capacity), it is in parallel with resistance 2777.In certain embodiments, Above-mentioned diode 2775, comparator 2773, resistance 2776, resistance 2777 and electric capacity 2778 can be omitted, and work as diode 2775 when being omitted, and the second input of comparator 2772 is just directly connected to one end of resistance 2774.In certain embodiments, Consider that resistance 2774 can be two resistor coupled in parallel, and its equivalent resistance is between 0.1 ohm~5 ohm based on power factor (PF).

Next just the integrated circuit running of installation detecting module is illustrated.First it is noted that this programme utilizes The principle that capacitance voltage will not undergo mutation；Electric capacity in LED straight lamp electric power loops is before electric power loop conducting, its both ends electricity Pressure is zero and short-circuit condition is presented in transient response；And when electric power loop is correctly installed on lamp socket in LED straight lamps, its transient state Response current-limiting resistance is smaller and peak value of response electric current is larger, when electric power loop is not correctly installed on lamp socket in LED straight lamps, its The principles such as transient response current-limiting resistance is larger and peak value of response electric current is smaller are carried out, and make the leakage current of LED straight lamps Less than 5MIU.Below will be with regard to LED straight lamps in normal work (LED straight lamps both ends lamp holder is correctly installed in lamp socket) (i.e. LED straight lamps one end lamp holder is installed in lamp socket and other end lamp holder contacts human body) embodiment during with changing lamp test The magnitude of current compares：

Wherein, in denominator part, Rfuse is the fuse resistance (10 ohm) of LED straight lamps, and 500 ohm are simulation Resistance of the conductive characteristic of human body in transient response；And in molecular moiety, take rms voltage 90V~305V maximum voltage It is worth (305*1.414) and minimum voltage difference 50V.If from above example it is known that LED straight lamps both ends lamp holder just Really it is installed in lamp socket, minimum transient current during its normal work is 5A；But when LED straight lamps one end lamp holder is installed on lamp socket When interior and other end lamp holder contacts human body, its maximum transient current but only has 845mA.Therefore, the utility model utilization can pass through Transient response flow through in LED power loop electric capacity (such as：The filter capacitor of filter circuit) electric current to detect LED straight lamps With the installment state of lamp socket, that is, detect whether LED straight lamps are correctly installed in lamp socket, and in LED straight lamps not yet just Really when being installed in lamp socket, a protection mechanism is more provided got an electric shock with avoiding user because of false touch LED straight lamp current-carrying parts Problem.The above embodiments only and are not used to limit implementation of the present utility model to illustrate the utility model.

Fig. 3 F are referred to, are the circuit diagram according to the installation detecting module of the utility model embodiment.Installation is detectd Survey module include on-off circuit 3080, detection pulse generating module 3040, control circuit 3060, detection decision circuit 3070 and Detect path circuit 3090.Detect decision circuit 3070 and couple detection path circuit 3090 through path 3081, to detect detection road Signal on footpath circuit 3090.Detect decision circuit 3070 and couple control circuit 3060 through path 3071 simultaneously, detection is tied Fruit signal is sent to control circuit 3060 through path 3071.Detect the passage path 3041 of pulse generating module 3040 coupling detection road Footpath circuit 3090, and pulse signal is produced to notify the opportunity point in detection path circuit 3090 conduction detection path.Control circuit 3060, according to testing result signal latch testing result, couple on-off circuit 3080 through path 3061, testing result are transmitted Or it is reflected into on-off circuit 3080.For on-off circuit 3080 according to testing result, decision makes the first installation sense terminal 2521 and the On or off between two installation sense terminals 2522.

In the present embodiment, the configuration for detecting pulse generating module 3040 may be referred to Fig. 3 B detection pulse generating module 2640.Fig. 3 B are refer to, when the framework of application detection pulse generating module 2640 is as detection pulse generating module 3040, The path 3041 of the present embodiment can be compared as path 2541, that is, OR gate 2652 can pass through path 3041 and be connected to detection path electricity Road 3090.In addition, detection pulse generating module 3040 can also passage path 3061 be connected to the output end of control circuit 3060.

Control circuit 3060 can be implemented using control chip or any circuit with signal operation disposal ability.When When control circuit 3060 judges user not in contact with fluorescent tube according to testing result signal, control circuit 3060 can controlling switch circuit 3080 switching state, to make external power source to be normally provided to rear end when fluorescent tube is properly attached on lamp socket LED module.Now, control circuit 3060 can end detection path.On the contrary, when control circuit 3060 is according to testing result signal When judging that user contacts fluorescent tube, because user has the risk of electric shock, therefore control circuit 3060 can be by on-off circuit 3080 Maintain the state of cut-off.

In an exemplary embodiment, control circuit 3060 and the drive circuit that on-off circuit 3080 can be in power module A part.For example, if drive circuit be switching dc to direct current transducer, on-off circuit 3080 can be direct current To the power switch of direct current transducer, and control circuit 3060 can be that the controller for corresponding to the power switch (is, for example, PWM controller).

The detection that the configuration of detection decision circuit 3070 may be referred to Fig. 3 C detection decision circuit 2670 or Fig. 3 E judges Circuit 2770.Fig. 3 C are refer to, when the framework of application detection decision circuit 2670 is as detection decision circuit 3070, resistance 2672 can be omitted.The path 3081 of the present embodiment can be compared as path 2581, that is, the positive input terminal meeting of comparator 2671 It is connected to detection path circuit 3090.The path 3071 of the present embodiment can be compared as path 2571, that is, comparator 2671 Output end can be connected to control circuit 3060.Fig. 3 E are refer to, are sentenced in the framework of application detection decision circuit 2770 as detection When determining circuit 3070, resistance 2774 can be omitted.The path 3081 of the present embodiment can be compared as path 2781, that is, two poles The anode of pipe 2775 can be connected to detection path circuit 3090.The path 3071 of the present embodiment can be compared as path 2771, also That is the output end of comparator 2772 and 2773 can be connected to control circuit 3060.

The configuration of on-off circuit 3080 may be referred to Fig. 3 D on-off circuit 2680.Fig. 3 D are refer to, in application switch electricity When the framework on road 2680 is as on-off circuit 3080, the path 3061 of the present embodiment can be compared as path 2561, and path 2581 will not be connected to detection decision circuit 2570, and be connected directly to the second installation sense terminal 2522.

As shown in Figure 3 G, Fig. 3 G are the detection road according to the utility model embodiment for the configuration of detection path circuit 3090 The circuit diagram of footpath circuit.Detection path circuit 3090 includes transistor 3092 and resistance 3093 and 3094.Transistor 3092 have base stage, collector and emitter-base bandgap grading, and emitter-base bandgap grading is via the connecting detection pulse generating module 3040 of path 3041.Resistance 3094 concatenates Between the emitter-base bandgap grading and earth terminal of transistor 3092, resistance 3093 is serially connected in the collector and the first installation sense terminal of transistor 3092 Between 2521.

In the present embodiment, when transistor 3092 receives the pulse signal for detecting pulse generating module 3040 and being provided When, it can the interior conducting during pulse.In the case that in fluorescent tube, at least one end is attached to lamp socket, from the first installation sense terminal 2521 The transistor of conducting can be reacted on to a detection path (passing through resistance 3094, transistor 3092 and resistance 3093) of earth terminal 3092 and turn on therewith, and detection path nodes X on establish a voltage signal.When user is not in contact with fluorescent tube, The level of the voltage signal be according to resistance 3093 with 3094 partial pressure and determine.When user contacts fluorescent tube, human body Equivalent resistance can be equivalent to be serially connected between nodes X and earth terminal, that is, in parallel with resistance 3094.The now voltage signal Level is determined according to the equivalent resistance of resistance 3093,3094 and human body.Thereby, there is suitable resistance value through setting Resistance 3093 and 3094, you can allow the voltage signal in nodes X to reflect the state whether user touches fluorescent tube so that Detect decision circuit can according in nodes X voltage signal produce corresponding to testing result signal.

In summary, the present embodiment can pass through conduction detection path and detect the voltage signal on detection path to judge Whether user has electric shock risk.In addition, for compared to previous embodiment, the detection path of the present embodiment is additionally to establish, and Non- is to be used as detection path by the use of electric power loop.Because the electronic building brick detected on path additionally established is less than on electric power loop Electronic building brick, therefore the voltage signal on the detection path additionally established more can accurately reflect the touching of user State.

Furthermore similar to described in previous embodiment, the circuits/modules described in the present embodiment all or part of can also collect As the configuration of chip.

Those skilled in the art should can consider in light of actual conditions herein and recognize the installation detecting module disclosed in this case embodiment not only Be can be used as distributed circuit design in LED straight lamps, can also by partial circuit component integration into an integrated circuit, Or whole circuit units are integrated into an integrated circuit, use the circuit cost and volume for saving installation detecting module.This Outside, detecting module is installed through modularization/integrated setting, may be such that installation detecting module can be easier to collocation in inhomogeneity In the LED straight lamps design of type, and then improve design compatibility.On the other hand, integrated installation detecting module is in LED straight tubes Under the application of lamp, because the circuit area inside fluorescent tube is reduced significantly therefore may be such that the lighting area of LED straight lamps is obvious Ground is lifted, and then improves the photocurrent versus light intensity performance of LED straight lamps.Furthermore because integrated design can make the group being integrated The operating current of part reduces and (reduces about 50%), and improves circuit operating efficiency, therefore the power saved can be used for It should give LED module luminous use so that the luminous efficiency of LED straight lamps can be lifted further.

In an exemplary embodiment, installation detecting module can be foregoing to substitute using the existing frequency signal of power module The function of the pulses generation mechanism of embodiment.For example, drive circuit (such as DC-DC converter) is in order to will produce PWM (PWM) signal, itself just has a reference frequency.And the function of the pulses generation mechanism can utilize ginseng The reference frequency of pwm signal is examined to implement so that detecting pulse generating module 2540 and 2740, pulses generation auxiliary circuit 2840 And the grade hardware circuit of signal generation unit 2940 can be omitted.In other words, install detecting module can with power module Other parts share circuit framework, so as to realize produce pulse signal function.

One is attached in addition to be mentioned that, in the description of this case, although the name for the functional property of each modules/circuits, Those skilled in the art is it should be appreciated that according to different circuit designs, and same circuit unit, which can be considered, different functions, also I.e. different modules/circuits may can share same circuit unit to realize its other circuit function.Therefore the work(of this case Energy life name is not limited to specific circuit unit and is only capable of including in specific modules/circuits, is first chatted in this conjunction bright.

In summary, above-described embodiment has been taught using Electronic Control and the mode of detecting to realize electrocution-proof protection.Phase For the technology of protection against electric shock is carried out using the action of mechanical structure, because the control of electronic type does not have with method for detecting The problem of mechanical fatigue, is present, and also helps modularization, the design of miniaturization.Therefore the anti-of fluorescent tube is carried out using electronic signal to touch Electric protection can have preferable reliability and service life.

In such scheme, it is single-ended enter the pin that refers to from one end lamp holder of LED straight lamps of electricity be electrically connected to external drive Signal, both-end enter the pin that electricity refers to from the both ends lamp holder of LED straight lamps and are electrically connected to external drive signal.

In power supply module design, in some embodiments, it is contemplated that the power of power supply module and the size of lamp holder, by certain One power power-supply module is fabricated to 2 small power supply modules (it is cumulative and is predetermined power), is separately positioned on LED straight lamps two In the lamp holder of side.

In power supply module design, described external drive signal can be low-frequency ac signal (such as：Civil power is carried For), high frequency ac signal (such as：Electric ballast is provided) or direct current signal is (by accessory power supply mould such as：Battery is carried For).

Described external drive signal be low-frequency ac signal (such as：Civil power is provided) or direct current signal (such as：Battery There is provided) LED straight lamps can be applied to both-end enter electricity (wiring) mode, can also support wherein one end using as it is single-ended enter electricity I.e. at this moment LED straight lamps support single-ended or both-end to enter electricity to (wiring) mode of (power supply), while LED straight lamps apply also for The occasion of emergency lighting, at this moment LED straight lamps need connect auxiliary power module.

In the auxiliary power module design of power supply module, energy-storage units can be battery or super capacitor, with LED module It is in parallel.Auxiliary power module is suitable for inclusion in the LED illumination module design of drive circuit.

When LED straight lamps enter (wiring) mode of electricity applied to both-end, installation detecting module is configured with LED straight lamps, To reduce the risk of leakage current.

In addition, " above " that above-described embodiment refers to refers to the light direction of light source, namely the face on lamp plate where light source is Above, and back to light source lamp plate for " below "." above " and " following " are merely to clearly illustrate this with reference to accompanying drawing Utility model, it is not to being provided with pad above limitation of the present utility model, such as the lamp plate, being not to say that lamp plate can only Pad is provided with above, it is understood that the wherein at least one side of lamp plate is provided with pad.It is " soft board " described in the utility model and " hard Plate " is also that comparatively i.e. hardboard is not necessarily referring to the hard plate of material with respect to being hardboard for soft board.

When direct current signal is as external drive signal, the power supply module of LED straight lamps can omit rectification circuit.

In the rectification circuit design of power supply module, the first rectification unit and the second rectification unit point in double rectification circuits Pin not with configuring in the both ends lamp holder of LED straight lamps couples.Double rectification units are applied to the driving framework of Double-End Source.And And when being configured with an at least rectification unit, go for the driving of low-frequency ac signal, high frequency ac signal or direct current signal Environment.

Double rectification units can be double half-wave rectification circuit, double-full-bridge rectifier circuit or half-wave rectifying circuit and full-bridge rectification The combination of circuit each one.

Can be each single pin (totally two pins) of both-end, each double pins of both-end in the pin design of LED straight lamps The framework of (totally four pins).Under the framework of each single pin of both-end, the rectification circuit design of single rectification circuit is applicable to. Under the framework of each double pins of both-end, the rectification circuit design of double rectification circuits is applicable to, and uses each any pin of both-end Or any single-ended double pins receive external drive signal.

In the filter circuit design of power supply module, can have Single Capacitance or π type filter circuits, after filtering out rectification Radio-frequency component in signal, and the direct current signal for providing low ripple is filtered signal.Filter circuit can also include LC and filter Circuit, so that high impedance is presented to specific frequency.Furthermore filter circuit can also include the filter being coupled between pin and rectification circuit Ripple unit, to reduce the electromagnetic interference caused by the circuit of LED.When direct current signal is as external drive signal, LED straight tubes The power supply module of lamp can omit filter circuit.

In the LED illumination module design of power supply module, comprising LED module or LED module and driving only can be included Circuit.To ensure that the voltage in LED illumination module is unlikely overvoltage can also be occurred for mu balanced circuit and LED illumination wired in parallel. Mu balanced circuit can be voltage clamping circuit, such as：Zener diode, bi-directional voltage stabilizing pipe etc..When rectification circuit includes condenser network, An electric capacity can be connected two-by-two between in a pin at each end of both-end and a pin of the other end, to be carried out with condenser network Partial pressure acts on and is used as mu balanced circuit.

In only the design of LED module is included, when high frequency ac signal is as external drive signal, an at least rectified current Road includes condenser network (that is, comprising more than one electric capacity), connects, makes with the full-bridge in rectification circuit or half-wave rectifying circuit Condenser network is equivalent to impedance as current regulating circuit and to adjust the electric current of LED module under high frequency ac signal.Thereby, When different electric ballasts provides the high frequency ac signal of different voltages, the electric current of LED module can be adjusted in default The unlikely situation that excessively stream occurs in current range.Furthermore it is possible to additionally energy circuit is released in increase, and it is in parallel with LED module, in outside Drive signal stops after providing, aid in by filter circuit release can, caused by reducing filter circuit or other circuits Resonance causes the situation of LED module flashing.In comprising LED module and drive circuit, drive circuit can be that direct current turns DC boosting change-over circuit, DC-DC decompression converting circuit or DC-DC lifting voltage conversion circuit.Drive circuit system The electric current of LED module to be stablized in setting electric current value, can also be heightened according to the high or low of external drive signal come corresponding Or turn down setting electric current value.Furthermore it is possible to additionally increase mode selector switch between LED module and drive circuit, make electric current LED module is directly inputted by filter circuit or LED module is inputted after overdrive circuit.

Furthermore it is possible to additionally increase protection circuit to protect LED module.Protection circuit can detect the electric current of LED module And/or voltage starts corresponding excessively stream or overvoltage protection to correspond to.

In the LED module design of power supply module, it is (that is, single that LED module can include the multi-string LED component being connected in parallel to each other One LED chip, or the LED groups of multiple LED modules with different colors chips composition) to go here and there, the LED component in each LED component string can be each other Connect and form netted connection.

That is, features described above can be made to arbitrary permutation and combination, and for the improvement of LED straight lamps, to continue Improve applicant previously proposed CN 105465640, CN 205424492, CN 106015996, CN 105472836 it is single or Its deficiency combined, there is provided safer, it is easier to manufacture and/or characteristic more preferably LED straight lamps.

Claims (10)

1. a kind of circuit for installing detecting module, is configured in LED straight lamps, for detecting the peace of the LED straight lamps and lamp socket Dress state, it is characterised in that the installation detecting module includes on-off circuit, detection pulse generating module, control circuit, detection Decision circuit and detection path circuit, wherein：

The detection decision circuit coupling detection path circuit, with the signal on detecting detection path circuit；

Decision circuit coupling control circuit is detected, testing result signal is sent to control circuit；

Pulse generating module coupling detection path circuit is detected, and arteries and veins is produced when the installation detecting module enters detection-phase Rush signal；

Control circuit couples on-off circuit, for according to testing result signal latch testing result, by testing result transmission or It is reflected into on-off circuit；

On-off circuit makes on or off between the first installation sense terminal and the second installation sense terminal according to testing result.

2. the circuit of installation detecting module according to claim 1, it is characterised in that the detection pulse generating module bag It is slow containing the first electric capacity, the second electric capacity and the 3rd electric capacity, first resistor, second resistance and 3rd resistor, the first buffer and second Device, reverser, the first diode and the first OR gate are rushed, wherein：

First electric capacity and first resistor are series between a driving voltage and reference potential, and its tie point couples the input of buffer End；

Second resistance is coupled to the input of a driving voltage and reverser；

3rd resistor is coupled between the input and a reference potential of the second buffer；

The positive ending grounding of first diode, negative terminal are also coupled to the input of the second buffer；

One end of second electric capacity and one end of the 3rd electric capacity couple the output end of the first buffer, the other end of the second electric capacity jointly The input of reverser is connect, and the other end of the 3rd electric capacity then couples the input of the second buffer；

The input of the output end of reverser and the output end of the second buffer coupling OR gate.

3. the circuit of installation detecting module according to claim 1, it is characterised in that the detection pulse generating module bag Include：

6th resistance, one end connect a driving voltage；

4th electric capacity, one end connect the other end of the 6th resistance, and the other end ground connection of the 4th electric capacity；

Schmitt trigger, has an input and an output end, and the input connects the connection of the 6th resistance and the 4th electric capacity End, the output end connect the detection path circuit；

7th resistance, one end connect the connection end of the 6th resistance and the 4th electric capacity；

Second transistor, there is a base terminal, a collector terminal and an emitter-base bandgap grading end, the collector terminal connects the other end of the 7th resistance, The emitter-base bandgap grading end is grounded；

8th resistance, one end connect second transistor base terminal, and the other end connecting detection path circuit of the 8th resistance with The output end of the control circuit；

Zener diode, there is an anode tap and a cathode terminal, anode tap ground connection, cathode terminal connection the 4th electric capacity and the 6th One end of resistance connection.

4. the circuit of installation detecting module according to claim 1, it is characterised in that the power supply mould of the LED straight lamps Drive circuit in block be switching dc to direct current transducer, and the on-off circuit is the work(of DC-DC converter Rate switchs, and the control circuit is the controller of the corresponding power switch.

5. it is according to claim 1 installation detecting module circuit, it is characterised in that it is described detection decision circuit include than Compared with device, the end of oppisite phase of the comparator, which receives, refers to level signal, and positive input terminal is connected to the detection path circuit, and output end connects It is connected to the control circuit.

6. the circuit of installation detecting module according to claim 1, it is characterised in that the detection decision circuit includes：

Second diode, has an anode tap and a cathode terminal, and the anode tap is connected to the detection path circuit；

Second comparator, there is first input end, the second input and output end, the first input end connects a setting signal, Second input connects the cathode terminal of the second diode, and the output end of the second comparator is connected to control circuit；

3rd comparator, has first input end, the second input and output end, and the first input end connects the second diode Cathode terminal, second input connects another setting signal, and the output end of the 3rd comparator is connected to control circuit；

Tenth resistance, one end connection driving voltage；

11st resistance, one end connect the other end of the tenth resistance and the second input of the second comparator, and the 11st resistance The other end ground connection；5th electric capacity, with the 11st resistor coupled in parallel.

7. the circuit of installation detecting module according to claim 1, it is characterised in that the on-off circuit includes a crystal Pipe, its base terminal are connected with the control circuit, and collector terminal and emitter-base bandgap grading end connect the first installation sense terminal and institute respectively The second installation sense terminal is stated, according to testing result, makes conducting between the first installation sense terminal and the second installation sense terminal or cuts Only.

8. the circuit of installation detecting module according to claim 1, it is characterised in that the detection path circuit includes crystalline substance Body pipe and the 12nd resistance and the 13rd resistance, wherein：

The transistor has base stage, collector and emitter-base bandgap grading, and emitter-base bandgap grading connects the detection pulse generating module；

12nd resistance is concatenated between the emitter-base bandgap grading of the transistor and earth terminal, the 13rd resistance be serially connected in the collector of the transistor with Between the first installation sense terminal.

9. the circuit of installation detecting module according to claim 8, it is characterised in that the transistor receives detection arteries and veins Punching occur module pulse signal when, the interior transistor turns during pulse, using detecting detection path circuit on signal as Voltage signal.

10. a kind of LED straight lamps, the mode of connection of the LED straight lamps enters electricity for both-end, it is characterised in that in the LED straight lamps Circuit with the installation detecting module any one of claim 1 to 8.