CN207011031U - A kind of circuit and LED straight lamps for installing detecting module - Google Patents

Abstract

The utility model proposes a kind of circuit and LED straight lamps for installing detecting module.The circuit of the installation detecting module is configured in the LED straight lamps, including a pulse generation auxiliary circuit, an integrated control module, an on-off circuit and a detection judge auxiliary circuit, wherein：Pulse generation auxiliary circuit is electrically connected with integrated control module, to aid in integrated control module to produce control signal in reconnaissance phase；On-off circuit is connected with integrated control module, to receive control signal in reconnaissance phase, so as to of short duration conducting on-off circuit；Detection judges that auxiliary circuit is connected with on-off circuit and integrated control module, and integrated control module is back to for the sampled signal on reconnaissance phase detection electric power loop and by sampled signal；Integrated control module, the control signal for the output maintenance on-off circuit enable when the sampled signal received is more than or equal to setting signal.

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.However, 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, disclosed in the embodiment of a part a kind of LED straight lamps, the LED drive module of the configuration in its lamp include a detecting module, are to decide whether to end external drive Signal flows through LED straight lamps, and the detecting module has one first sense terminal and one second sense terminal, when flowing through the first sense terminal And second electric current of sense terminal when being greater than or equal to a current value, detecting module conducting make LED straight lamps operate in one to lead Logical state；When the electric current for flowing through the first sense terminal and the second sense terminal is less than above-mentioned current value, detecting module cut-off makes LED straight lamps enter a not on-state.For electronic circuit, it is preferably capable of with more precise control logical sum control Circuit processed, therefore such scheme 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.

To solve the above problems, according to one side of the present utility model, there is provided a kind of circuit for installing detecting module.

The circuit of installation detecting module of the present utility model, is configured in a LED straight lamps, for detecting the LED straight tubes The installment state of lamp and lamp socket, the circuit of the installation detecting module include a pulse generation auxiliary circuit, an integrated control mould Block, an on-off circuit and a detection judge auxiliary circuit, wherein：The pulse generation auxiliary circuit is electrically connected with the collection Into control module, to aid in the integrated control module to produce control signal in reconnaissance phase；The on-off circuit and institute Integrated control module connection is stated, to receive the control signal in reconnaissance phase, so as to the of short duration conducting on-off circuit； The detection judges that auxiliary circuit is connected with the on-off circuit and the integrated control module, for being detected in reconnaissance phase Sampled signal on electric power loop and the sampled signal is back to the integrated control module；The integrated control module, Control signal for the output maintenance on-off circuit enable when the sampled signal received is more than or equal to setting signal.

Alternatively, the integrated control module includes first input end, the second input and output end, and including, Impulse generating unit, testing result latch units and detection unit, wherein：The impulse generating unit is used for from described the One input receives the signal that the pulse generation auxiliary circuit is provided, and produces an at least pulse signal according to this；It is described Testing result latch units couple the impulse generating unit and the detection unit, in the reconnaissance phase, by institute Pulse signal caused by impulse generating unit is stated to provide to the output end as control signal；The detection unit coupling inspection Result latch units are surveyed, for receiving the signal for detecting judgement auxiliary circuit and being provided from second input, and Testing result signal is produced according to this, and the testing result signal is supplied to the testing result latch units；The detection As a result latch units, the testing result signal latch that the detection unit is provided, and provided after the reconnaissance phase To the output end of the integrated control module, on-off circuit described on or off.

Alternatively, the detection judges auxiliary circuit, for the first sampled signal in reconnaissance phase detection electric power loop And first sampled signal is supplied to the integrated control module through second input.

Alternatively, the impulse generating unit is the analog/digital circuit frame for producing an at least pulse signal function Structure.

Alternatively, the impulse generating unit is schmitt trigger, the input coupling collection of the schmitt trigger Into the first input end of control module, the output end of the schmitt trigger couples the output end of the integrated control module, To produce an at least pulse signal.

Alternatively, the testing result latch units include D flip-flop and OR gate, wherein：The D flip-flop tool There are a data input pin, a frequency input and an output end, data input pin connection driving voltage, the frequency input connects Connect the detection unit；The OR gate has first input end, the second input and an output end, and the first input end connects The impulse generating unit is connect, second input connects the output end of the D flip-flop, and the output end of the OR gate connects Connect the output end of the integrated control module.

Alternatively, the testing result latch units, for being exported in reconnaissance phase with recurrent pulses waveform Control signal.

Alternatively, the detection unit is comparator, the comparator have first input end, the second input and Output end, the first input end connect a setting signal, and second input connects the input of the integrated control module End, and the output end of the comparator connects the testing result latch units.

Alternatively, the pulse generation auxiliary circuit includes first resistor, second resistance and 3rd resistor, and wraps Containing electric capacity, transistor, wherein：The first resistor first end connects driving voltage；The electric capacity first end connects first resistor Second end, the second end ground connection；Second resistance first end connection first resistor second end；The transistor have base terminal, Collector terminal and emitter-base bandgap grading end；Collector terminal connection second resistance second end, emitter-base bandgap grading end ground connection；The 3rd resistor first end connects crystal Pipe base terminal, the second end are connected to the output end of the integrated control module.

Alternatively, the pulse generation auxiliary circuit also includes Zener diode, and the Zener diode has anode tap With cathode terminal, the anode tap ground connection, the cathode terminal connects electric capacity first end.

Alternatively, the pulse generation auxiliary circuit, to produce the first output voltage in reconnaissance phase, described first is defeated Go out voltage to export to the first input end of integrated control module, the control of one enable of the integrated control module output via path Signal is to on-off circuit.

Alternatively, the detection judges that auxiliary circuit includes first resistor, second resistance and 3rd resistor, electric capacity and two Pole pipe, wherein：The first resistor first end connects the on-off circuit, and the power supply that the second end connects the LED straight lamps returns Second end on road；The second resistance first end connects a driving voltage end；The 3rd resistor first end connects second resistance Second end, and the second input of the integrated control module is connected to, and the second end ground connection of 3rd resistor；The electric capacity with 3rd resistor is in parallel；The anode tap of the diode connects the first resistor first end, cathode terminal connection second resistance second End.

Alternatively, the detection judges that auxiliary circuit is a resistance；Or the detection judges that auxiliary circuit is in parallel Two or more resistance, the equivalent resistance of the resistance is between 0.1 ohm to 5 ohm.

Alternatively, the on-off circuit includes transistor, and the transistor has a base terminal, a collector terminal and an emitter-base bandgap grading End, the base terminal of the transistor connect the output end of the integrated control module, the collector terminal of the transistor via path One end of electric power loop is connected, the emitter-base bandgap grading end connection detection of the transistor judges auxiliary circuit；Or the switch electricity Road includes FET, and the FET is used to control the first end of the electric power loop of the LED straight lamps with the detection to sentence Determine the on or off between auxiliary circuit.

Alternatively, the on-off circuit, in reconnaissance phase, the control signal according to the testing result latch units is anti- Turn on and end again.

According to another aspect of the present utility model, there is provided a kind of LED straight lamps.

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

Alternatively, LED straight lamps of the present utility model include rectification circuit and filter circuit, and the rectification circuit is used for pair The alternating current that external power source provides carries out rectification, and the signal that the filter circuit is used to obtain the rectification is filtered, institute Installation detecting module is stated to be coupled between the rectification circuit and filter circuit.

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 is the application circuit block schematic diagram according to the power supply module of the LED straight lamps of the utility model embodiment；

Fig. 4 A are the circuit diagram according to the installation detecting module of the utility model embodiment；

Fig. 4 B are the internal circuit blocks schematic diagram according to the integrated control module of the utility model embodiment；

Fig. 4 C are the circuit diagram according to the pulse generation auxiliary circuit of the utility model embodiment；

Fig. 4 D are the circuit diagram that auxiliary circuit is judged according to the detection of the utility model embodiment；

Fig. 4 E are the circuit diagram according to the on-off 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 outside drive Dynamic 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, and same one end lamp holder of fluorescent tube has the first pin 501st, the second pin 502, to receive external drive signal.First pin 501, the second pin 502 of the present embodiment couple (that is, electrical connection or direct or indirect connection) is 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.Equally, no matter how direct current signal is inputted by the first pin 501, the second pin 502, rectification The positive pole of the rectified signal of 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.

In an exemplary embodiment, the full-wave rectifying circuit 610 shown in Fig. 2A is applied in the fluorescent tube of double-width grinding, the The configuration of one rectification circuit 510 and the second rectification circuit 540 can be as shown in Figure 2 C.Fig. 2 C are referred to, Fig. 2 C are according to this practicality The circuit diagram of the rectification circuit of new 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.According to described above, rectification circuit 610 In the first commutation diode 611 and the 3rd commutation diode 613 collocation rectification circuit 640 in the 6th commutation diode 642 Full-wave rectification is carried out to AC signal with the 8th commutation diode 644, and the rectified signal exported is full wave rectified signal.

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 can be considered the rectification circuit for having three groups of bridge arm units, every group Bridge arm unit can provide an input signal receiving terminal.For example, the first commutation diode 911 and the 3rd commutation diode 913 the first bridge arm units of composition, its corresponding signal received on the second pin 502；Second commutation diode 912 and the 4th rectification Diode 914 forms the second bridge arm unit, its corresponding signal received on the first pin 501；And the 5th commutation diode 915 and the 6th commutation diode 916 form the 3rd bridge arm unit, its corresponding signal received on the 3rd pin 503.Wherein, three As long as group bridge arm unit two of which receives opposite polarity AC signal and can be carried out full-wave rectification.Base this, in Fig. 2 E Under the configuration of the rectification circuit of embodiment, it is same it is compatible it is single-ended enter electricity, both-end list pin enters electricity and the double pins of both-end enter electricity Power supply mode.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 or Fig. 2 E embodiments, when entering electricity using both-end list pin, no matter external drive signal is The 3rd pin 503 or the 4th pin 504 are applied to, the rectification circuit of the present embodiment all can normal operation.In addition, when the 3rd pin 503 and the mistake access of the 4th pin 504 it is single-ended enter electricity lamp socket when, thin (copper) wire 917 of the present embodiment can reliably melt It is disconnected, therefore when fluorescent tube turns back to correct lamp socket, remain to maintain normal rectification to work 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 is referred to, is the application circuit square according to the power supply module of the LED straight lamps of the utility model embodiment Schematic diagram.Compared to Fig. 1 C illustrated embodiments, the LED straight lamps of the present embodiment include the first rectification circuit 510, filter circuit 520 and also increase installation detecting module 2520, wherein power module can also include the members of LED illumination module 530. Detecting module 2520 is installed and couples the first rectification circuit 510 through the first installation sense terminal 2521, and through the second installation sense terminal 2522 coupling filter circuits 520.The installation detecting of detecting module 2520 flows through the first installation sense terminal 2521 and the second installation detecting The signal at end 2522, and decide whether that ending external drive signal flows through LED straight lamps according to detecting result.When LED straight lamps When being not yet formally installed on lamp socket, installation detecting module 2520 can detect less current signal and to judge that signal flows through too high Impedance, now installing the cut-off of detecting module 2520 stops operation LED straight lamps.If it is not, installation detecting module 2520 judges LED Straight lamp is correctly installed on lamp socket, and installation detecting module 2520 maintains conducting to make LED straight lamp normal operatings.That is, when flowing through One electric current of the first installation sense terminal and the second installation sense terminal is greater than or equal to a set-mounted electric current (or one Current value) when, installation detecting module judges that LED straight lamps are correctly installed on lamp socket and turned on, and LED straight lamps is operated in one Conducting state；When the electric current for flowing through the first installation sense terminal and the second installation sense terminal is set less than the installation When determining electric current (or current value), installation detecting module judges that LED straight lamps are not installed on lamp socket correctly and ended, and makes LED straight Spot enters a not on-state.In other words, installation impedance of the detecting module 2520 based on detecting judges on or off, makes LED straight lamps operate in conducting or into not on-states.Thereby, user can be avoided not yet correctly to pacify in LED straight lamps The problem of being got an electric shock during loaded on lamp socket because of false touch LED straight lamp current-carrying parts.

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.

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.From above example it is known that if LED straight lamps both ends lamp holder is equal Correctly 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 Seat in and the other end lamp holder contact human body when, its maximum transient current but only have 845mA.Therefore, the utility model utilization can lead to Cross transient response flow through in LED power loop electric capacity (such as：The filter capacitor of filter circuit) electric current to detect LED straight tubes The installment state of lamp and lamp socket, that is, detect whether LED straight lamps are correctly installed in lamp socket, and in LED straight lamps not yet When being correctly installed in lamp socket, a protection mechanism is more provided to avoid user from being got an electric shock because of false touch LED straight lamp current-carrying parts The problem of.The above embodiments only and are not used to limit implementation of the present utility model to illustrate the utility model.

Fig. 4 A are referred to, Fig. 4 A are the circuit diagram according to the installation detecting module of the utility model embodiment.

Installation detecting module 2520 can include a pulse generation auxiliary circuit 2840, an integrated control module 2860, one is opened The powered-down detection of road 2880 and one judges auxiliary circuit 2870.

Wherein, integrated control module 2860 comprises at least three pin positions such as two input IN1, IN2 and output end OT.Arteries and veins The input IN1 and output end OT that auxiliary circuit 2840 is electrically connected with integrated control module 2860 occur for punching, to aid in integrating Control module 2860 produces a control signal.

Detection judges that auxiliary circuit 2870 is electrically connected with the input IN2 and on-off circuit of integrated control module 2860 2880, it can be used to when on-off circuit 2880 turns on LED power loop, and passback is associated with the sampled signal on electric power loop To the input IN2 of integrated control module 2860 so that integrated control module 2860 can judge that LED is straight based on this sampled signal The installment state of spot and lamp socket.

One end of LED straight lamp electric power loops is electrically connected in on-off circuit 2880 and detection judges auxiliary circuit 2870, to receive the control signal that integrated control module 2860 is exported, and the interior conducting during the enable of control signal, make Obtain the conducting of LED straight lamps electric power loop.

In particular, integrated control module 2860 can be used to according to signal received on input IN1, at one section In reconnaissance phase on-off circuit 2880 is briefly turned on by control signal of the output end OT outputs with an at least pulse.Herein In section reconnaissance phase, whether integrated control module 2860 can correct according to the signal detection LED straight lamps on input IN2 Be attached in lamp socket and latch testing result, using as whether turned on after reconnaissance phase terminates on-off circuit 2880 according to According to (that is, deciding whether normal power supply to LED module).Thin portion circuit framework and the integrated circuit running of 3rd preferred embodiment Illustrate successively to be described in down.

Fig. 4 B are referred to, are to be illustrated according to the internal circuit blocks of the integrated control module of the utility model embodiment Figure.Integrated control module 2860 includes impulse generating unit 2862, testing result latch units 2863 and detection unit 2864. Impulse generating unit 2862 can receive the signal that pulse generation auxiliary circuit 2840 is provided from input IN1, and produce according to this A raw at least pulse signal, and caused pulse signal can be provided to testing result latch units 2863.In the present embodiment, Impulse generating unit 2862 for example can be implemented with schmitt trigger, and its input couples the input of integrated control module 2860 Hold IN1, and the output end OT of its output end coupling integrated control module 2860.But impulse generating unit 2862 of the present utility model It is not limited only to implement using the circuit framework of schmitt trigger.Any can realize produces an at least pulse signal function Analog/digital circuit framework all can be applied to this.

Testing result latch units 2863 couple impulse generating unit 2862 and detection unit 2864.In reconnaissance phase, Testing result latch units 2863 can provide pulse signal caused by impulse generating unit 2862 to defeated as control signal Go out to hold OT.On the other hand, the testing result signal lock that testing result latch units 2863 can also be provided detection unit 2864 Deposit, and provided after reconnaissance phase to output end OT, used according to whether the installment states of LED straight lamps correctly determines to be No conducting on-off circuit 2880.In the present embodiment, testing result latch units 2863 can be for example with D flip-flop collocation OR gate Circuit framework implement.Wherein, D D-flip flops have a data input pin, a frequency input and an output end.The number Driving voltage VCC, the frequency input connecting detection unit 2864 are connected according to input.OR gate has a first input end, one Second input and an output end, first input end connection impulse generating unit 2862, second input connection D type triggerings The output end of device, and the output end connection output end OT of OR gate.But testing result latch units 2863 of the present utility model are not only It is limited to implement using the circuit framework of D flip-flop and OR gate.It is any to realize latch and output control signal is to control The analog/digital circuit framework for the function that on-off circuit 2880 switches all can be applied to this.

Detection unit 2864 couples testing result latch units 2863.Detection unit 2864 can be received from input IN2 and examined The signal for judging that the lock of auxiliary circuit 2870 provides is surveyed, and produces the detection whether indication LED straight lamp is properly installed according to this Consequential signal, and caused testing result signal can be provided to testing result latch units 2863.In the present embodiment, detect Unit 2864 for example can be implemented with comparator.Wherein, comparator has a first input end, one second input and one defeated Go out end, the first input end connects a setting signal, second input connection input IN2, and the output of comparator 2772 Hold connecting detection result latch units 2863.But detection unit 2864 of the present utility model is not limited only to the circuit using comparator Framework is implemented.Any can realize judges mould that whether LED straight lamps be properly installed according to the signal on input IN2 Plan/digital circuit framework all can be applied to this.

Fig. 4 C are referred to, Fig. 4 C are to illustrate according to the circuit of the pulse generation auxiliary circuit of the utility model embodiment Figure.Pulse generation auxiliary circuit 2840 includes resistance 2842,2844 and 2846, electric capacity 2843 and transistor 2845.Resistance 2842 one end connects a driving voltage (such as VCC).The other end of one end resistance 2842 of electric capacity 2843, and electric capacity 2843 The other end is grounded.The connection end of one end connection resistance 2842 and electric capacity 2843 of resistance 2844.Transistor 2845 has a base stage End, a collector terminal and an emitter-base bandgap grading end.The collector terminal connects the other end of resistance 2844, and the emitter-base bandgap grading end is grounded.Resistance 2846 One end connection transistor 2845 base terminal, and the other end of resistance 2846 is connected to integrated control module via path 2841 2840 output end OT and the control terminal of on-off circuit 2880.Pulse generation auxiliary circuit 2840 also includes Zener diode 2847, it has an anode tap and a cathode terminal, the other end of anode tap connection electric capacity 2843 and ground connection, the cathode terminal One end that connection electric capacity 2863 is connected with resistance 2842.

Fig. 4 D are referred to, Fig. 4 D are to judge that the circuit of auxiliary circuit is illustrated according to the detection of the utility model embodiment Figure.Detection judges that auxiliary circuit 2870 includes resistance 2872,2873 and 2875, electric capacity 2874 and diode 2876.Resistance One end of 2872 one end connecting valve circuit 2880, and the other end in the other end connection LED power loop of resistance 2872 (such as：Second installation sense terminal 2522).One end of resistance 2873 connects the driving voltage (such as VCC).One end of resistance 2874 The other end of resistance 2873 is connected, and the input IN2 of integrated control module 2860 is connected to via path 2871, and resistance 2874 other end ground connection.Electric capacity 2875 is in parallel with resistance 2874.Diode 2876 has an anode tap and a cathode terminal, should Anode tap connects one end of resistance 2872, and the connection end of cathode terminal connection resistance 2873 and 2874.In certain embodiments, Above-mentioned resistance 2873, resistance 2874, electric capacity 2875 and diode 2876 can be omitted, when diode 2876 is omitted, One end of resistance 2872 is directly connected to the input IN2 of integrated control module 2860 via path 2871.In some embodiments In, considered based on power factor (PF), resistance 2872 can be two resistor coupled in parallel, and its equivalent resistance includes 0.1 ohm~5 ohm.

Fig. 4 E are referred to, Fig. 4 E are the circuit diagram according to the on-off circuit of the utility model embodiment.Switch electricity Road 2880 includes transistor 2882, and it has a base terminal, a collector terminal and an emitter-base bandgap grading end.The base terminal of transistor 2882 via Path 2861 is connected to the output end OT of integrated control module 2860, the collector terminal connection LED power loop of transistor 2882 One end (such as：First installation sense terminal 2521), and the emitter-base bandgap grading end connecting detection of transistor 2882 judges auxiliary circuit 2870. Wherein, the also replaceable equivalent elements into other electronic switch of transistor 2882, such as：MOSFET etc..

It is intended to first illustrate herein, the installation detecting principle that the installation detecting module of the present embodiment is utilized is to be based on electric capacity The principle that voltage will not undergo mutation, before electric power loop conducting, its both end voltage is the electric capacity in LED straight lamp electric power loops Zero and transient response present short-circuit condition；And when electric power loop is correctly installed on lamp socket in LED straight lamps, its transient 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 transient state Response current-limiting resistance is larger and the principles such as peak value of response electric current is smaller are carried out, and is less than the leakage current of LED straight lamps 5MIU.In other words, exactly judge whether LED straight lamps are correctly installed on lamp socket through the mode of detecting peak value of response electric current It is interior.Therefore on can refer to the explanation of previous embodiment in normal work and the transient current part changed under lamp test, in this not Repeat and repeat.It is beneath to be illustrated the integrated circuit running for only just installing detecting module.

Referring again to Fig. 4 A, when LED straight lamps change the outfit in lamp socket, LED straight lamps are in the case where there is one end to enter electricity The modules/circuits that driving voltage VCC can be caused to be provided in installation detecting module 2520.Pulse generation auxiliary circuit 2840 Driving voltage VCC can be reacted on and carry out charging action.(this time determines the pulse period) over time, it exports electricity Pressure (claiming the first output voltage in this) from one first low level voltage is increased over one, and forward (magnitude of voltage can be according to for threshold voltage Defined according to circuit design), and exported via a path 2841 to the input IN1 of integrated control module 2860.Integrated control Module 2860 from input IN1 receive the first output voltage after, via a path 2861 export an enable control signal (such as For a high levle voltage) to on-off circuit 2880 and pulse generation auxiliary circuit 2840.When on-off circuit 2880 receives this enable Control signal after, on-off circuit 2880 turn on cause LED straight lamps an electric power loop (comprise at least first installation sense terminal 2521st, on-off circuit 2880, path 2881, detection judge that auxiliary circuit 2870 and second installs sense terminal 2522) conducting；And This simultaneously, pulse generation auxiliary circuit 2840 can react on the control signal of enable and to turn on discharge path dynamic to carry out electric discharge Make, and a period of time after the control signal of the enable returned by integrated control module 2860 is received, (this time determined Determine pulse width), the first output voltage gradually drops back to the first low level voltage from the voltage quasi position more than forward threshold voltage.Its In, when the first output voltage is decreased below reverse threshold voltage (magnitude of voltage can define according to circuit design), integrate Control module 2860 can react on the first output voltage and the control signal of enable is pulled down into forbidden energy level and (that is, exports forbidden energy Control signal, the control signal of wherein forbidden energy is, for example, a low level voltage) so that control signal has impulse form Signal waveform (that is, by the low level voltage of the first time in control signal, high levle voltage and secondary low level voltage Form one first pulse signal).And detect and judge that auxiliary circuit 2870 in the electric power loop conducting of LED straight lamps, detects it On loop one first sampled signal (such as：Voltage signal), and the first sampled signal is supplied to collection via input IN2 Into control module 2960.When integrated control module 2960 judge this first sampled signal be more than or equal to a setting signal (such as： One reference voltage) when, according to above-mentioned application principle of the present utility model, represent that LED straight lamps are correctly installed in lamp socket, therefore Integrated control module 2860 can export and maintain control signal to on-off circuit 2880, the on-off circuit 2880 of enable to receive with greetings The control signal of energy and then maintenance turn on the electric power loop maintenance conducting so that LED straight lamps, therebetween integrated control module 2860 No longer produce pulse output.

On the contrary, when integral control circuit 2860 judges that this first sampled signal is less than this setting signal, according to above-mentioned Application principle of the present utility model, represent that LED straight lamps are not yet correctly installed in lamp socket, therefore integral control circuit can export And the control signal of forbidden energy is maintained to on-off circuit 2880, on-off circuit 2880 receives the control signal of this forbidden energy and then maintains to cut Only so that the electric power loop of LED straight lamps maintains open circuit.

Discharge path due to pulse generation auxiliary circuit 2840 is ended so that pulse generation auxiliary circuit 2840 is again Carry out charging action.Therefore, after the electric power loop of above-mentioned LED straight lamps maintains open circuit a period of time (i.e. during the pulse period Between), the first output voltage of pulse generation auxiliary circuit 2840 is increased over forward threshold value from the first low level voltage again Voltage, and exported via path 2841 to the input IN1 of integrated control module 2860.Integrated control module 2860 is from input After holding IN1 to receive the first output voltage, control signal can be pulled to enable level from forbidden energy level again and (that is, export enable Control signal), and the control signal of enable is provided to on-off circuit 2880 and pulse generation auxiliary circuit 2840.When opening After powered-down road 2880 receives the control signal of this enable, the conducting of on-off circuit 2880 causes the electric power loop of LED straight lamps (at least Judge that auxiliary circuit 2870 is detectd with the second installation including the first installation sense terminal 2521, on-off circuit 2880, path 2881, detection Survey end 2522) also turn on again.At the same time, pulse generation auxiliary circuit 2840 can react on again enable control signal and Conducting discharge path simultaneously carries out discharging action, and in the control signal for receiving the enable returned by integrated control module 2860 A period of time (this section time determine pulse width) afterwards, the first output voltage from the voltage quasi position more than forward threshold voltage again It is secondary gradually to drop back to the first low level voltage.Wherein, when the first output voltage is decreased below reverse threshold voltage, control is integrated Module 2860 can react on the first output voltage and the control signal of enable is pulled down into forbidden energy level, so that control signal Signal waveform with impulse form is (that is, by the low level voltage of the third time in control signal, secondary high levle voltage One second pulse signal is formed with the low level voltage of the 4th time).And detect the electricity for judging auxiliary circuit 2870 in LED straight lamps When resource loop turns on again, also detect again on its loop one second sampled signal (such as：Voltage signal), and by second Sampled signal is supplied to integrated control module 2960 via input IN2.When this second sampled signal is more than and/or equal to setting Signal (such as：One reference voltage) when, according to above-mentioned application principle of the present utility model, represent that LED straight lamps are correctly installed on In lamp socket, therefore integrated control module 2860 can export and maintain the control signal of enable to on-off circuit 2880, on-off circuit 2880 receive the control signal of this enable and then maintain to turn on the electric power loop maintenance conducting so that LED straight lamps, integrate therebetween Control module 2860 no longer produces pulse wave output.

It is new according to above-mentioned practicality when integral control circuit 2860 judges that this second sampled signal is less than this setting signal The application principle of type, represent that LED straight lamps are not installed in lamp socket correctly yet, therefore integral control circuit can export and maintain to prohibit Can control signal to on-off circuit 2880, on-off circuit 2880 receive the control signal of this forbidden energy so that maintain to end so that The electric power loop of LED straight lamps maintains open circuit.In the case, user is avoided not yet correctly to be installed on lamp in LED straight lamps Seat Nei Shiyin false touches LED straight lamps current-carrying part and the problem of get an electric shock.

Internal circuit/module running of the beneath installation detecting module for being more particularly described the present embodiment.Please referring also to scheme 4B to Fig. 4 E, when LED straight lamps change the outfit in lamp socket, a driving voltage VCC charges via resistance 2742 to electric capacity 2743, And when the voltage of electric capacity 2843 rise to be enough trigger pulse generation unit 2862 when (that is, more than forward threshold voltage), pulse The output of generation unit 2862 can become one first high levle voltage output from one first initial low level voltage and be tied to detection Fruit latch units 2863.The first Gao Zhun that testing result latch units 2863 are exported in reception from impulse generating unit 2862 After the voltage of position, testing result latch units 2863 can export one second high levle voltage to transistor 2882 via output end OT Base terminal and resistance 2846.Exported when the base terminal of transistor 2882 receives from testing result latch units 2863 The second high levle voltage after, the collector terminal of transistor 2882 turns on emitter-base bandgap grading end, so cause LED straight lamps electric power loop (comprise at least the first installation sense terminal 2521, transistor 2882, resistance 2872 and second and install sense terminal 2522) conducting.

And at the same time, the base terminal of transistor 2845 is via the second high levle on the Rreceive output end OT of resistance 2846 After voltage, the collector terminal of transistor 2845 turns on ground connection with emitter-base bandgap grading end so that the voltage of electric capacity 2843 via resistance 2844 over the ground Electric discharge, when the undertension of electric capacity 2843 is with trigger pulse generation unit 2862, the output of impulse generating unit 2862 is from the One high levle voltage drop back to the first low level voltage (the first low level voltage of first time, the first high levle voltage with second The first low level voltage form one first pulse signal).And when the electric power loop conducting of LED straight lamps, rung by transient state Should flow through in LED power loop electric capacity (such as：The filter capacitor of filter circuit) electric current flow through transistor 2882 and resistance 2872, and a voltage signal is formed on resistance 2872, this voltage signal is provided to input IN2 so that detection unit 2864 can be by this voltage signal compared with a reference voltage.

When detection unit 2864 judges that this voltage signal is more than or equal to this reference voltage, the output of detection unit 2,864 one 3rd high levle voltage is to testing result latch units 2863.And when detection unit 2864 judges the voltage signal on resistance 2872 During less than reference voltage, detection unit 2864 exports one the 3rd low level voltage to testing result latch units 2863.

Wherein, testing result latch units 2863 can latch the 3rd high levle voltage/that detection unit 2864 is provided Three low level voltages, then the signal that the signal of latch and impulse generating unit 2862 are provided carries out or logical operation, and According to or logical operation result determine output control signal be the second high levle voltage or the second low level voltage.

More specifically, when the voltage signal that detection unit 2864 is judged on resistance 2872 is more than or equal to reference voltage When, testing result latch units 2863 can latch the 3rd high levle voltage that detection unit 2864 is exported, and use maintenance output Second high levle voltage and then causes the electric power loop of transistor 2882 and LED straight lamps to the base terminal of transistor 2882 Maintain conducting.Because testing result latch units 2863 can export and maintain the second high levle voltage, therefore transistor 2845 is also Conducting ground connection is maintained, and then causes the voltage of electric capacity 2843 can not rise to be enough trigger pulse generation unit 2862.Work as detection When unit 2864 judges that the voltage signal on resistance 2872 is less than reference voltage, detection unit 2864 and impulse generating unit 2862 What is provided is all low level voltage, thus by or logical operation after, testing result latch units 2863 can be exported and maintained The second low level voltage and then causes transistor 2882 to maintain cut-off and LED straight lamps to the base terminal of transistor 2882 Electric power loop maintains open circuit.However, because the control signal on output end OT is now maintained at the second low level voltage, therefore Transistor 2845 also maintains cut-off state, and voltage VCC to be driven is charged via resistance 2842 to electric capacity 2843 with weight again It is multiple to carry out (pulse) next time detecting.

One, which is attached, in this is mentioned that can be defined as driving voltage VCC in the reconnaissance phase described in the present embodiment has been carried Installation detection module 2520 is supplied to, but detection unit 2864 not yet judges that the voltage signal on resistance 2872 is more than or equal to reference During voltage.In in reconnaissance phase, by the control signal that testing result latch units 2863 are exported can repeatedly make crystalline substance Body pipe 2845 turns on and cut-off so that discharge path is periodically switched on and cut-off.Electric capacity 2843 can react on transistor 2845 conduction and cut-off, and periodic charge and discharge.Therefore, testing result latch units 2863 can be in reconnaissance phase Control signal of the output with recurrent pulses waveform.And when detection unit 2864 judges that the voltage signal on resistance 2872 is more than Or equal to reference voltage, or when driving voltage VCC is stopped offer, can be considered reconnaissance phase terminate (have determined that correct installation, Or LED lamp tube is pulled out).Now testing result latch units 2863, which can export, maintains the second high levle voltage or second The control signal of low level voltage.

In the description of this case, although the name for the functional property of each modules/circuits, those skilled in the art should It can be appreciated that according to different circuit designs, same circuit unit, which can be considered, different functions, that is, different modules/circuits Same circuit unit may can be shared to realize its other circuit function.Therefore this case functional name and be not used to limit Fixed specific circuit unit 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 provided.

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 (17)

1. a kind of circuit for installing detecting module, is configured in a LED straight lamps, for detecting the LED straight lamps and lamp socket Installment state, it is characterised in that the circuit of the installation detecting module includes a pulse generation auxiliary circuit, an integrated control mould Block, an on-off circuit and a detection judge auxiliary circuit, wherein：

The pulse generation auxiliary circuit is electrically connected with the integrated control module, described integrated to be aided in reconnaissance phase Control module produces control signal；

The on-off circuit is connected with the integrated control module, to receive the control signal in reconnaissance phase, so as to short The temporary conducting on-off circuit；

The detection judges that auxiliary circuit is connected with the on-off circuit and the integrated control module, in reconnaissance phase Detect the sampled signal on electric power loop and the sampled signal is back to the integrated control module；

The integrated control module, for the output maintenance on-off circuit when the sampled signal received is more than or equal to setting signal The control signal of enable.

2. the circuit of installation detecting module according to claim 1, it is characterised in that the integrated control module includes the One input, the second input and output end, and including impulse generating unit, testing result latch units, Yi Jijian Unit is surveyed, wherein：

The impulse generating unit is used for the signal for receiving the pulse generation auxiliary circuit from the first input end and being provided, And an at least pulse signal is produced according to this；

The testing result latch units couple the impulse generating unit and the detection unit, in the reconnaissance phase It is interior, provided pulse signal caused by the impulse generating unit as control signal to the output end；The detection is single Member coupling testing result latch units, for receiving the letter for detecting judgement auxiliary circuit and being provided from second input Number, and testing result signal is produced according to this, and the testing result signal is supplied to the testing result latch units；

The testing result latch units, the testing result signal latch that the detection unit is provided, and detectd described There is provided after the survey stage to the output end of the integrated control module, on-off circuit described on or off.

3. the circuit of installation detecting module according to claim 2, it is characterised in that the detection judges auxiliary circuit, For the first sampled signal in reconnaissance phase detection electric power loop and by first sampled signal through second input It is supplied to the integrated control module.

4. the circuit of installation detecting module according to claim 2, it is characterised in that the impulse generating unit is to be used for Produce the analog/digital circuit framework of an at least pulse signal function.

5. the circuit of installation detecting module according to claim 4, it is characterised in that the impulse generating unit is Shi Mi Special trigger, the first input end of the input coupling integrated control module of the schmitt trigger, the Shi Mite triggerings The output end of device couples the output end of the integrated control module, to produce an at least pulse signal.

6. the circuit of installation detecting module according to claim 2, it is characterised in that the testing result latch units bag D flip-flop and OR gate are included, wherein：

The D flip-flop has a data input pin, a frequency input and an output end, data input pin connection driving Voltage, the frequency input connect the detection unit；

The OR gate has first input end, the second input and an output end, and the first input end connects the pulse production Raw unit, second input connects the output end of the D flip-flop, and the output end of the OR gate connects the integrated control The output end of molding block.

7. the circuit of installation detecting module according to claim 6, it is characterised in that the testing result latch units, For control signal of the output with recurrent pulses waveform in reconnaissance phase.

8. the circuit of installation detecting module according to claim 2, it is characterised in that the detection unit is comparator, The comparator has first input end, the second input and output end,

The first input end connects a setting signal, and second input connects the input of the integrated control module, And the output end of the comparator connects the testing result latch units.

9. the circuit of installation detecting module according to claim 1, it is characterised in that the pulse generation auxiliary circuit bag Containing first resistor, second resistance and 3rd resistor, and include electric capacity, transistor, wherein：

The first resistor first end connects driving voltage；

Electric capacity first end connection first resistor second end, the second end ground connection；

Second resistance first end connection first resistor second end；

The transistor has base terminal, collector terminal and emitter-base bandgap grading end；Collector terminal connection second resistance second end, emitter-base bandgap grading end ground connection；

The 3rd resistor first end connection transistor base end, the second end is connected to the output end of the integrated control module.

10. the circuit of installation detecting module according to claim 9, it is characterised in that the pulse generation auxiliary circuit Also include, Zener diode,

The Zener diode has anode tap and cathode terminal, the anode tap ground connection, and the cathode terminal connects electric capacity first end.

11. the circuit of the installation detecting module according to claim 9 or 10, it is characterised in that the pulse generation auxiliary Circuit, to produce the first output voltage in reconnaissance phase, first output voltage is exported to integrated control mould via path The first input end of block, the integrated control module export the control signal of an enable to on-off circuit.

12. the circuit of installation detecting module according to claim 1, it is characterised in that the detection judges auxiliary circuit Comprising first resistor, second resistance and 3rd resistor, electric capacity and diode, wherein：

The first resistor first end connects the on-off circuit, and the second end connects the of the electric power loop of the LED straight lamps Two ends；

The second resistance first end connects a driving voltage end；

3rd resistor first end connection second resistance second end, and it is connected to the second input of the integrated control module End, and the second end ground connection of 3rd resistor；

The electric capacity is in parallel with 3rd resistor；

The anode tap of the diode connects the first resistor first end, cathode terminal connection second resistance second end.

13. the circuit of installation detecting module according to claim 1, it is characterised in that

The detection judges that auxiliary circuit is a resistance；

Or the detection judges that auxiliary circuit is two or more resistance in parallel,

The equivalent resistance of the resistance is between 0.1 ohm to 5 ohm.

14. the circuit of installation detecting module according to claim 1, it is characterised in that

The on-off circuit includes transistor, and the transistor has a base terminal, a collector terminal and an emitter-base bandgap grading end, the transistor Base terminal the output end of the integrated control module is connected via path, the collector terminal connection electric power loop of the transistor One end, the emitter-base bandgap grading end connection detection of the transistor judge auxiliary circuit；

Or

The on-off circuit includes FET, and the FET is used to control the first of the electric power loop of the LED straight lamps End and the detection judge the on or off between auxiliary circuit.

15. the circuit of installation detecting module according to claim 14, it is characterised in that the on-off circuit, detecting In stage, the control signal according to the testing result latch units is repeatedly turned on and ended.

16. 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 the LED straight tubes There is the circuit of the installation detecting module any one of claim 1 to 15 in lamp.

17. LED straight lamps according to claim 16, it is characterised in that described whole including rectification circuit and filter circuit Current circuit is used to carry out the alternating current that external power source provides rectification, and the filter circuit is used for the signal obtained to the rectification It is filtered, the installation detecting module is coupled between the rectification circuit and filter circuit.