The application is the Application No. 201621344288.5 submitted on December 7th, 2016, a kind of entitled LED straightThe divisional application of the utility application of spot.
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 technologyThe 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, underFace 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 onlyIt 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 realityApply example.
Need to first illustrate in addition, herein in order to clearly state each utility model feature of this exposure and with multiple implementationsThe 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 areaArt personnel can design together according to demand from be about to feasible implementation example collocation, or by different embodiments can band changeAccording 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 exampleAspect, also include in the case of feasible, the band between each embodiment/components/modules changes and permutation and combination, in this conjunctionFirst chat bright.
Though applicant in previous case, such as：In CN105465640A, it is proposed that reached using flexible circuit boardInto the improvement mode for reducing electric leakage accident, section Example can with present application be combined using circuit mode will have it is more significantEffect.
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 embodimentBlock 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 exchangingDrive 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 turnedChange into high frequency, the alternating current drive signal of high pressure.The species of common electronicses ballast, such as：Instantaneous starting type (InstantStart) 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 voltageScope is 400-700V；Frequency is more than 10kHz, and preferable frequency range is 20k-50kHz.LED straight lamps 500 receive outside driveDynamic 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 pin501st, 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.WhenWhen lamp tube drive circuit 505 omits, AC power 508 couples with the first pin 501, the second pin 502.Now, the first pin501st, 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 listThe 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, figure1B 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 figureShown 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 500For 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-endCircuit 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 embodimentRoad 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 tubeHold 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.FirstPin 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 receptionDrive 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 sideFormula, 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 respectivelyOne 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 saturatingCross 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-upRectification and filter action；In another exemplary embodiment, the pin of both-end lamp holder can distinguish short circuit together, such as first connectsPin 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 sideThe 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 502Property 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 pin501 and second pin 502 can receive the external drive signal of opposite polarity, and the 3rd pin 503 can connect with the 4th pin 504The 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 610For bridge rectifier, the first commutation diode 611, the second commutation diode 612, the 3rd commutation diode 613 and are includedFour commutation diodes 614, to carry out full-wave rectification to received signal.The positive pole coupling the of first commutation diode 611Two rectification output ends 512, negative pole couple the second pin 502.The positive pole of second commutation diode 612 couples the second rectification output end512, 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 wholeFlow 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 610It 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 firstFlow into after output end 511, and sequentially flowed after the second rectification output end 512, the first commutation diode 611 and the second pin 502Go 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 firstFlow 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 firstOutput 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 wholeSignal 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 610It 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 secondFlowed out after rectification output end 512, the first commutation diode 611 and the second pin 502.When the first pin 501 couples dc sourceNegative terminal and the second pin 502 coupling dc source anode when, AC signal is sequentially through the second pin 502, the 3rd rectification twoFlowed 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 612Flowed 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, rectificationThe 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 end512。
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 710Comprising the first commutation diode 711 and the second commutation diode 712, to carry out halfwave rectifier to received signal.FirstThe positive pole of commutation diode 711 couples the second pin 502, and negative pole couples the first rectification output end 511.Second commutation diode712 positive pole couples the first rectification output end 511, and negative pole couples the first pin 501.Second rectification output end 512 regards actual answerWith 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 inputsThe signal level that pin 502 inputs.Now, the first commutation diode 711 and the second commutation diode 712 are in inverse inclinedCut-off state, rectification circuit 710 stop output rectified signal.When AC signal is in negative half-wave, AC signal is firstThe 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 711And second commutation diode 712 be in along inclined conducting state, AC signal is whole via the first commutation diode 711, firstFlow 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-mentionedOperating 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, theThe 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 practicalityThe 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 610Including first to fourth commutation diode 611-614, it is configured as described in earlier figures 2A embodiments.Rectification circuit 640 includes theFive commutation diodes 641, the 6th commutation diode 642, the 7th commutation diode 643 and the 8th commutation diode 644, to rightReceived signal carries out full-wave rectification.The positive pole of 5th commutation diode 641 couples the second rectification output end 512, negative pole couplingConnect 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 pin503.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 twoThe 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 610Input 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 with4th pin 504.I.e. the present embodiment realizes the circuit structure of the double pins of both-end using the framework of two full-wave rectifying circuits.
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 canLED 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, orIt 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 signalWhen 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 signalWhen 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 wholeCurrent 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 pin504, or put on the second pin 502 and the 3rd pin 503.The first pin 501 and the 4th is put in outside drive signalPin 504, and when external drive signal is AC signal, during AC signal is in positive half-wave, AC signal sequentially passes throughFlowed into after first pin 501, the 4th commutation diode 614 and the first rectification output end 511, and sequentially through the second rectification output end512nd, flowed out after the 5th commutation diode 641 and the 4th pin 504.During AC signal is in negative half-wave, AC signalSequentially 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 secondFlowed 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-waveOr 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 610The 5th commutation diode 641 and the 7th commutation diode 643 in circuit 640 carry out full-wave rectification to AC signal, and defeatedThe 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 signalFor AC signal when, during AC signal is in positive half-wave, AC signal is sequentially through the 3rd pin 503, the 8th rectification twoFlowed 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 611Flowed 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 3rdFlowed 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 twoFlowed 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 signalThe 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 610In the first commutation diode 611 and the 3rd commutation diode 613 collocation rectification circuit 640 in the 6th commutation diode 642Full-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 implementThe 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 640Go 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 DThe circuit diagram of the rectification circuit of the utility model embodiment.Rectification circuit 910 includes first to fourth commutation diode911-914, it is configured as described in earlier figures 2A embodiments.In the present embodiment, rectification circuit 910 also includes the 5th rectification twoThe 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 poleCouple 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 end511.4th pin 504 is floating in this.
In particular, the rectification circuit 510 ' of the present embodiment, which can be considered, the whole of three groups of bridge arms (bridge arm) unitCurrent circuit, every group of bridge arm unit can provide an input signal receiving terminal.For example, the first commutation diode 911 and the 3rdCommutation diode 913 forms the first bridge arm unit, its corresponding signal received on the second pin 502；Second commutation diode 912The second bridge arm unit is formed with the 4th commutation diode 914, its corresponding signal received on the first pin 501；And the 5th is wholeFlow the commutation diode 916 of diode 915 and the 6th and form the 3rd bridge arm unit, its corresponding signal received on the 3rd pin 503.Wherein, as long as three groups of bridge arm unit two of which, which receive opposite polarity AC signal, can be carried out full-wave rectification.Base this,Under the configuration of the rectification circuit of Fig. 2 E embodiments, it is same it is compatible it is single-ended enter electricity, both-end list pin enter electricity and both-end is double connectsPin enters the power supply mode of electricity.Specific running is described as follows：
It is single-ended enter electricity in the case of, external drive signal is put on the first pin 501 and the second pin 502, nowFirst to fourth commutation diode 911-914 running as described in earlier figures 2A embodiments, and the 5th commutation diode 915 with6th 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 pin503, or put on the second pin 502 and the 3rd pin 503.The first pin 501 and the 3rd is put in outside drive signalPin 503, and when external drive signal is AC signal, during AC signal is in positive half-wave, AC signal sequentially passes throughFlowed into after first pin 501, the 4th commutation diode 914 and the first rectification output end 511, and sequentially through the second rectification output end512nd, flowed out after the 5th commutation diode 915 and the 3rd pin 503.During AC signal is in negative half-wave, AC signalSequentially 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 secondFlowed 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-waveOr 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 rectificationThe commutation diode 916 of diode 915 and the 6th carries out full-wave rectification to AC signal, and the rectified signal exported is all-waveRectified signal.
On the other hand, the second pin 502 and the 3rd pin 503, and external drive signal are put in outside drive signalFor AC signal when, during AC signal is in positive half-wave, AC signal is sequentially through the 3rd pin 503, the 6th rectification twoFlowed 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 911Flowed 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 3rdFlowed 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 twoFlowed 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 signalThe 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 circuitThe first commutation diode 911, the 3rd commutation diode 913, the 5th commutation diode 915 and the 6th commutation diode in 910916 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-mentionedThe 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 rectificationDiode 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 whole similar to the first commutation diode 911 and the 3rdFlow 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 withFig. 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, end points change-over circuit 941 includes fuse 947 and 948.The one end of fuse 947 couples the first pin 501, other end couplingIt is connected to the conode (that is, the input of the first bridge arm unit) of the second commutation diode 912 and the 4th commutation diode 914.ProtectDangerous one end of silk 948 couples the second pin 502, and the other end is coupled to the first commutation diode 911 and the 3rd commutation diode 913Conode (that is, the input of the second bridge arm unit).Thereby, when 502 any electric current flowed through of the first pin 501 and the second pinHigher than fuse 947 and 948 rated current when, fuse 947 and 948 will accordingly fuse and open a way, and thereby reachFlow the function of protection.In addition, (such as the excessively stream situation in the case of fuse 947 and 948 only one of them fusingOnly occurring the of short duration time eliminates), if enter the power supply mode of electricity using the double pins of both-end to drive fluorescent tube, then the present embodimentRectification circuit can also be after the elimination of excessively stream situation, the powering mode based on both-end list pin and continued operation.
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 withFig. 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 917Rise.For earlier figures 2D embodiments, when entering electricity using both-end list pin, no matter external drive signal is consequently exerted at3rd pin 503 or the 4th pin 504, the rectification circuit of the present embodiment all can normal operation.In addition, when the 3rd pin 503 withThe mistake access of 4th pin 504 it is single-ended enter electricity lamp socket when, thin (copper) wire 917 of the present embodiment can reliably fuse, becauseThis remains to maintain normal rectification to work when fluorescent tube turns back to correct lamp socket using the straight lamp of this rectification circuit.
From the foregoing, the rectification circuit of Fig. 2 C to Fig. 2 F embodiments can it is compatible it is single-ended enter electricity, both-end list pin enter electricityAnd 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, considerFrom 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 connectLamp 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 embodimentSchematic diagram.Compared to Fig. 1 C illustrated embodiments, the LED straight lamps of the present embodiment include the first rectification circuit 510, filter circuit520 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 terminal2522 coupling filter circuits 520.The installation detecting of detecting module 2520 flows through the first installation sense terminal 2521 and the second installation detectingThe signal at end 2522, and decide whether that ending external drive signal flows through LED straight lamps according to detecting result.When LED straight lampsWhen 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 highImpedance, now installing the cut-off of detecting module 2520 stops operation LED straight lamps.If it is not, installation detecting module 2520 judges LEDStraight 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 throughOne 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 oneCurrent 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 oneConducting state；When the electric current for flowing through the first installation sense terminal and the second installation sense terminal is set less than the installationWhen 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 straightSpot enters a not on-state.In other words, installation impedance of the detecting module 2520 based on detecting judges on or off,LED straight lamps are made to operate in conducting or into not on-state.Thereby, user can be avoided not yet correct in LED straight lampsThe problem of being got an electric shock when being installed 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 loopEquiva lent impedance changes, and installation detecting module 2520 can judge whether user contacts by the voltage change on detecting electric power loopFluorescent tube, it can equally realize above-mentioned electroshock-proof function.In other words, in the utility model embodiment, detecting module is installed2520 can pass through detecting electric signal (including voltage or electric current) to judge whether fluorescent tube is properly installed and whether is userThe 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 utilizesThe 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 electricityPressure 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 stateResponse 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, itsThe 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 lampsLess 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)The electricity of (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 testFlow-rate ratio compared with：
Wherein, in denominator part, Rfuse is the fuse resistance (10 ohm) of LED straight lamps, and 500 ohm are simulationResistance of the conductive characteristic of human body in transient response；And in molecular moiety, take rms voltage 90V~305V maximum voltageIt 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 equalCorrectly 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 lampSeat 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 toCross transient response flow through in LED power loop electric capacity (such as：The filter capacitor of filter circuit) electric current to detect LED straight tubesThe 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 yetWhen 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 partsThe 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 to show according to the internal circuit blocks of the trigistor of the utility model embodimentIt is intended to.The installation detecting module of the present embodiment may be, for example, to include power end VP1, the first switch terminal SP1 and the second switchingHold a SP2 trigistor 2920.Wherein, the power end VP1 of trigistor 2920 is suitable to receive driving voltageVCC, the first switch terminal SP1 are adapted to one of the first installation sense terminal 2521 and the second installation sense terminal 2522 (in figureFormula is depicted as the installation sense terminal 2521 of connection first, but is not limited only to this), and the second switch terminal SP2 is adapted to firstInstallation sense terminal 2521 with the second installation sense terminal 2522 is wherein another (is depicted as be connected second in schema and installs detectingEnd 2522, but it is not limited only to this).
Trigistor 2920 includes signal processing unit 2930, signal generation unit 2940, signal gathering unit2950 and switch element 2960.In addition, trigistor 2920 can also include internal electric source detecting unit 2970.SignalThe signal that processing unit 2930 can be provided according to signal generation unit 2940 and signal gathering unit 2950, and in reconnaissance phaseControl signal of the output with impulse waveform, and output maintains high voltage level or low voltage level after reconnaissance phaseControl signal, with the conducting state of controlling switch unit 2960, use the electric power loop for deciding whether to turn on LED straight lamps.LetterNumber generation unit 2940 can produce pulse signal to signal processing unit 2930 when receiving driving voltage VCC.Wherein, believeNumber pulse signal caused by generation unit 2940 can be according to produced by the reference signal from external reception, or by itIndependent generation itself, the utility model are any limitation as not to this.In " outside " described in this be relative to signal generation unitFor 2940, as long as that is, right and wrong reference signal, either trigistor as caused by signal generation unit 2940In 2920 produced by other circuits, or as produced by the external circuit of trigistor 2920, come under described hereinFrom the reference signal of external reception.Signal gathering unit 2950 can be used to sample the telecommunications on the electric power loop of LED straight lampsNumber, and the installment state of LED straight lamps is detected according to the signal being sampled to, then the testing result letter of testing result will be indicatedNumber being transmitted to signal processing unit 2930 is handled.
In an exemplary embodiment, the trigistor 2920 can be realized using integrated circuit, that is, described threeEnd switch device can be the switch control chip at three ends, and it can be applicable to the LED straight tubes that any kind of both-end enters electricityIn lamp, the function that electrocution-proof protection is provided is used.It should further be appreciated that the trigistor 2920 can not be limited and only wrappedContaining three pin position/connection ends, but it is arranged as described above wherein to have three pin positions in multiple pin positions, comes under this realityApply the scope to be protected of example.
In an exemplary embodiment, signal processing unit 2930, signal generation unit 2940, signal gathering unit 2950,Switch element 2960 and internal electric source detecting unit 2970 can be realized (but not only with Fig. 4 B to Fig. 4 F circuit framework respectivelyIt is limited to this).Beneath point illustrates with regard to each unit.
Fig. 4 B are referred to, Fig. 4 B are the circuit diagram according to the signal processing unit of the utility model embodiment.LetterNumber processing unit 2930 includes driver 2932, OR gate 2933 and D flip-flop 2934.Driver 2932 has inputWith output end, the output end of driver 2932 is through the connecting valve unit 2960 of path 2931, using and provide control signalTo switch element 2960.OR gate 2933 has first input end, the second input and output end.First input of OR gate 2933End connects signal generation unit 2940, and the input of the output end coupling drivers 2932 of OR gate 2933 through path 2941.D flip-flop 2934 has data input pin (D), frequency input (CK) and output end (Q).The data of D flip-flop 2934Input receives driving voltage VCC, and the frequency input of D flip-flop 2934 is connected to signal gathering unit through path 29512950, and the second input of the output end coupling OR gate 2933 of D flip-flop.
Fig. 4 C are referred to, Fig. 4 C are the circuit diagram according to the signal generation unit of the utility model embodiment.LetterNumber generation unit 2940 includes resistance 2942 and 2943, electric capacity 2944, switchs 2945 and comparator 2946.The one of resistance 2942End receives driving voltage VCC, and resistance 2942, resistance 2943 and electric capacity 2944 are serially connected with driving voltage VCC and earth terminalBetween.Switch 2945 is in parallel with electric capacity 2944.Comparator 2946 has first input end, the second input and output end.ThanCompared with the connection end of the first input end coupling resistance 2942 and 2943 of device 2946, the second input of comparator 2946 receives oneReference voltage Vref, and the control terminal of the output end coupling switch 2945 of comparator 2946.
Fig. 4 D are the circuit diagram according to the signal gathering unit of the utility model embodiment.Signal gathering unit2950 include OR gate 2952 and comparator 2953 and 2954.OR gate 2952 has first input end, the second input and defeatedGo out end, the output end of OR gate 2952 is connected to signal processing unit 2930 via path 2951.First input of comparator 2953End is connected to one end (that is, on the electric power loop of LED straight lamps) of switch element 2960 via path 2962, comparator 2953Second input receives one first reference voltage (such as 1.25V, but be not restricted to this), and the output end coupling of comparator 2953The first input end of OR gate 2952.The first input end of comparator 2954 receives one second reference voltage (such as 0.15V, but unlimitedIt is formed on this), the first input end of the second input coupling comparator 2953 of comparator 2954, and the output of comparator 2954Second input of end coupling OR gate 2952.
Fig. 4 E are referred to, Fig. 4 E are the circuit diagram according to the switch element of the utility model embodiment.Switch is singleMember 2960 includes transistor 2963, and it has gate terminal, drain end and source terminal.The gate terminal of transistor 2963 is via path2931 are connected to signal processing unit 2930, and the drain end of transistor 2963 is connected to the first switch terminal via path 2961SP1, and the source terminal of transistor 2973 via path 2962 be connected to the second switch terminal SP2, comparator 2953 it is first defeatedEnter the second input of end and comparator 2954.
Fig. 4 F are referred to, Fig. 4 F are to illustrate according to the circuit of the internal electric source detecting unit of the utility model embodimentFigure.Internal electric source detecting unit 2970 includes clamp circuit 2972, generating circuit from reference voltage 2973, voltage-regulating circuit 2974And schmitt trigger 2975.Clamp circuit 2972 is respectively coupled to power end VP1 with voltage-regulating circuit 2974, is driven with receivingDynamic voltage VCC, use and carry out voltage clamp and the action of voltage adjustment to driving voltage VCC respectively.Generating circuit from reference voltage2973 coupling voltage-regulating circuits, to produce a reference voltage to voltage-regulating circuit 2974.Schmitt trigger 2975 hasThere are input and output end, its input coupling clamp circuit 2972 and voltage-regulating circuit 2974, and the output of its output end is drivenDynamic voltage to indicate driving voltage VCC whether a power supply confirmation signal of regular supply.Wherein, if driving voltage VCC is inThe state of regular supply, schmitt trigger 2975 can export enable (such as high levle) power supply confirmation signal so that drivingVoltage VCC is provided to each components/circuits in trigistor 2920.On the contrary, if driving voltage VCC is in abnormalState, schmitt trigger 2975 can export forbidden energy (such as low level) power supply confirmation signal, use and avoid three-terminal switchEach component/circuit because in device 2920 is operated under abnormal driving voltage VCC and damaged.
Referring to Fig. 4 A to Fig. 4 F, in the running of the present embodiment physical circuit, when LED straight lamps change the outfit in lamp socketWhen, driving voltage VCC can be provided to trigistor 2920 via power end VP1.Now, driving voltage VCC can be viaResistance 2942 charges with 2943 pairs of electric capacity 2944.And when capacitance voltage is increased over reference voltage Vref, comparator 2946The control terminal of the first input end and switch 2945 that export high levle voltage to OR gate 2933 can be switched to.Wherein, 2945 are switchedThis high levle voltage can be reacted on and turned on so that electric capacity 2944 starts to discharge over the ground.Through the process of this discharge and recharge, compareDevice 2946 can export the output signal with impulse form.
On the other hand, during comparator 2946 exports high levle voltage, OR gate 2952 can corresponding output high levleVoltage turns on transistor 2962 so that electric current circulates on the electric power loop of LED straight lamps.Wherein, when having electric current in power supplyWhen loop is circulated, the voltage signal of corresponding current size can be established on path 2972.Comparator 2953 can sample this voltage letterNumber and compared with the first reference voltage (such as 1.25V).
When the voltage signal being sampled to is more than the first reference voltage (such as 1.25V), comparator 2953 can export high levleVoltage.OR gate 2952 can react on the high levle voltage that comparator 2953 is exported and produce another high levle voltage to D types and touchSend out the frequency input of device 2934.D D-flip flops 2934 understand the output based on OR gate 2952 and maintain to export high levle voltage.High levle voltage that driver 2932 can be reacted on input and produce the control signal of enable to turn on transistor 2963.ThisWhen, even if electric capacity 2944 has been discharged to capacitance voltage and has been less than reference voltage Vref, and it is pulled down to the output of comparator 2946Low level voltage, because D flip-flop 2934 can maintain to export high levle voltage, therefore transistor 2963 can be maintained at and leadLogical state.
When the voltage signal being sampled to is less than the first reference voltage (such as 1.25V), comparator 2953 can export low levelVoltage.OR gate 2952 can react on the low level voltage that comparator 2953 is exported and produce another low level voltage to D types and touchSend out the frequency input of device 2934.D D-flip flops 2934 understand the output based on OR gate 2952 and maintain to export low level voltage.Now, once electric capacity 2944, which is discharged to capacitance voltage, is less than reference voltage Vref, and make comparator 2946 output be pulled down to it is lowLevel voltage (that is, at the end of during pulse), because two inputs of OR gate 2952 are all maintained at low level voltage so that defeatedGo out end and also export low level voltage, therefore driver 2932 can react on the control letter that the low level voltage received produces forbidden energyNumber carry out "off" transistor 2963 so that the electric power loop of LED straight lamps is turned off.
As shown in the above description, the running of the signal processing unit 2930 of the present embodiment is similar to foregoing second and preferably implementedThe testing result latch cicuit 2760 of example, the running of signal generation unit 2940 are similar to the detecting of foregoing second preferred embodimentPulse generating module 2740, the running of signal gathering unit 2950 are similar to the detection decision circuit of foregoing second preferred embodiment2770, and the on-off circuit 2780 operated similar to foregoing second preferred embodiment of switch element 2960.
In summary, the present embodiment can pass through conduction detection path and detect the voltage signal on detection path to judgeWhether user has electric shock risk.In addition, the detection path of the present embodiment is additionally to establish, rather than it is to be used as inspection by the use of electric power loopSurvey path.Because the electronic building brick detected on path additionally established is less than the electronic building brick on electric power loop, therefore additionally buildVoltage signal on vertical detection path more can accurately reflect the touching state of user.
Furthermore similar to described in previous embodiment, the circuits/modules described in the present embodiment all or part of can also collectAs the configuration of chip, as shown in earlier figures 4A to Fig. 4 F, therefore repeated no more in this.
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 driveSignal, 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 certainOne 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 twoIn 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 carriedFor), 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：BatteryThere 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 electricityI.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 answeringThe occasion suddenly illuminated, 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 moduleIt 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 isAbove, and back to light source lamp plate for " below "." above " and " following " are merely to clearly illustrate this with reference to accompanying drawingUtility 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 onlyPad 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 " hardPlate " 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 circuitsPin 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.AndAnd 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 signalEnvironment.
Double rectification units can be double half-wave rectification circuit, double-full-bridge rectifier circuit or half-wave rectifying circuit and full-bridge rectificationThe 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 lampsThe 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-endOr 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 rectificationRadio-frequency component in signal, and the direct current signal for providing low ripple is filtered signal.Filter circuit can also include LC and filterCircuit, so that high impedance is presented to specific frequency.Furthermore filter circuit can also include the filter being coupled between pin and rectification circuitRipple unit, to reduce the electromagnetic interference caused by the circuit of LED.When direct current signal is as external drive signal, LED straight tubesThe 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 includedCircuit.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 networkPartial 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 currentRoad includes condenser network (that is, comprising more than one electric capacity), connects, makes with the full-bridge in rectification circuit or half-wave rectifying circuitCondenser 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 defaultThe 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 outsideDrive signal stops after providing, aid in by filter circuit release can, caused by reducing filter circuit or other circuitsResonance causes the situation of LED module flashing.In comprising LED module and drive circuit, drive circuit can be that direct current turnsDC boosting change-over circuit, DC-DC decompression converting circuit or DC-DC lifting voltage conversion circuit.Drive circuit systemThe 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 correspondingOr turn down setting electric current value.Furthermore it is possible to additionally increase mode selector switch between LED module and drive circuit, make electric currentLED 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 moduleAnd/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 otherOne 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 otherConnect 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 continueImprove applicant previously proposed CN 105465640, CN 205424492, CN 106015996, CN 105472836 it is single orIts deficiency combined, there is provided safer, it is easier to manufacture and/or characteristic more preferably LED straight lamps.
Above-mentioned embodiment, the limitation to scope of protection of the utility model is not formed.Those skilled in the art shouldShould it is realized that, depending on design requirement and other factors, various modifications, combination, sub-portfolio and replacement can occur.Any made within spirit of the present utility model and principle modifications, equivalent substitutions and improvements etc., should be included in this practicalityWithin the scope of novel protected.