CN206904652U - LED straight lamps - Google Patents

LED straight lamps Download PDF

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Publication number
CN206904652U
CN206904652U CN201720188642.8U CN201720188642U CN206904652U CN 206904652 U CN206904652 U CN 206904652U CN 201720188642 U CN201720188642 U CN 201720188642U CN 206904652 U CN206904652 U CN 206904652U
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Prior art keywords
pin
led straight
straight lamps
rectification
signal
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熊爱明
刘新通
张康红
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Jiaxing Super Lighting Electric Appliance Co Ltd
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Jiaxing Super Lighting Electric Appliance Co Ltd
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Priority claimed from CN201621344288.5U external-priority patent/CN206386705U/en
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Abstract

The utility model discloses a kind of LED straight lamps, the LED straight lamps have first to fourth pin, and the rectification circuit includes：The bridge rectifier being made up of four commutation diodes, for carrying out full-wave rectification to the rectification circuit received signal；The the first rectification input and the second rectification input of the bridge rectifier couple with the first pin of the LED straight lamps and the second pin respectively；5th commutation diode and the 6th commutation diode；Wherein the 5th commutation diode positive pole couples the second rectification output end of the bridge rectifier, and negative pole couples the 3rd pin of the LED straight lamps；6th commutation diode positive pole couples the 3rd pin of the LED straight lamps, and negative pole couples the first rectification output end of the bridge rectifier.According to the technical solution of the utility model, LED straight lamps can it is compatible it is single-ended enter electricity, both-end list pin enters electricity and the double pins of both-end enter the power supply mode of electricity, make the existing lamp socket of user may continue to use, it is not necessary to more lamp changing base again.

Description

LED straight lamps
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 LED straight lamps.
Background technology
LED illumination technology is positive fast-developing and instead of traditional incandescent lamp and fluorescent lamp.Compared to being filled with indifferent gas For the fluorescent lamp of body and mercury, LED straight lamps need not filling mercury.Therefore, various by seeming traditional fluorescent bulbs and lamp In family expenses or the illuminator of workplace that the illumination option such as pipe is dominated, LED straight lamps are it is hardly surprising that be increasingly becoming people Height expect illumination option.The advantages of LED straight lamps the durability comprising lifting and life-span and compared with low power consuming.Therefore, After considering all factors, LED straight lamps would is that the illumination option of escapable cost.
Known LED straight lamps generally comprise fluorescent tube, in fluorescent tube and the circuit board with light source, and located at fluorescent tube two The lamp holder at end, lamp holder is interior to be provided with power supply, is electrically connected between light source and power supply by circuit board.But existing LED is straight Spot still has following a few class quality problems to need to solve, such as circuit board is generally rigid plate, after fluorescent tube ruptures, especially in part When rupture, whole LED straight lamp remains in the state of straight tube, and user, which can be mistakenly considered fluorescent tube, to be used, so as to go Voluntarily install, easily cause to occur to leak electricity and electric shock accidents.Applicant in previous case, such as:In CN105465640U, Structural improvement mode corresponding to proposing.
Come again, LED drivings drive signal used is direct current signal, but the drive signal of fluorescent lamp is the low of civil power Frequently, low-voltage ac signal, or even during applied to Emergency Light, the battery of Emergency Light is direct current signal.Between different driving signal Voltage, frequency range drop it is big, it is not simple that to carry out rectification be compatible.
LED straight lamps in the market, existing Double-End Source, and when LED straight lamps are Double-End Source, LED straight tubes If one of both-end of lamp has inserted lamp socket and when the other end not yet inserts lamp socket, if user, which touches, is not inserted into lamp socket The metal at end or conductive part, it is possible to the risk of electric shock occurs.To solve the problem, patent CN106015996A is disclosed Scheme in, disclose a kind of scheme of LED straight lamps, the LED drive module in its LED straight lamp includes a detecting module, is LED straight lamps are flowed through to decide whether to end external drive signal, the detecting module has one first sense terminal and one the Two sense terminals, when the electric current for flowing through the first sense terminal and the second sense terminal is greater than or equal to a current value, detecting module Conducting makes LED straight lamps operate in a conducting state；When flowing through an electric current of the first sense terminal and the second sense terminal less than upper When stating current value, detecting module cut-off makes LED straight lamps enter a not on-state.Also there is single ended power supply, make for user Used time needs to select the light fixture being adapted with lamp socket, and single ended power supply is also different from the wiring of Double-End Source, and this just brings for user Suitable inconvenience.
When LED straight lamps using both-end enter electricity when (such as 8 Foot 42W can both-end enter electricity LED straight lamps), its both ends lamp holder A wire must be laid along the lamp plate (such as bendable circuit soft board) in fluorescent tube between (at least each pin) and (be referred to as Line Or Neutral) be used to receive external drive voltage.This wire Line is different from fluorescent tube (1) and the both positive and negative polarity of LED unit connects The LED+ lines and LED- lines that connect and (2) ground wire (Ground).But because this wire Line passes by lamp plate, and with LED+ lines Lean on it is close cause between this both threads there is parasitic capacitance (such as about 200PF), so wire Line is easily produced Or influenceed by electromagnetic interference (EMI), cause the conduction of power supply to become very poor.
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 Merge with mode to form a LED straight lamps or a portion.
According to one side of the present utility model, there is provided a kind of LED straight lamps.
LED straight lamps of the present utility model, which include, is used for luminous LED component and the power supply mould for driving the LED component Block, rectification circuit is included in the power module, and there is the first pin and the second pin, institute in the pin of the LED straight lamps It is full-wave bridge rectifier circuit to state rectification circuit, and it includes the first commutation diode, the second commutation diode, the pole of the 3rd rectification two Pipe and the 4th commutation diode；Wherein：The positive pole of first commutation diode couples the second rectification output end, and negative pole coupling second connects Pin；The positive pole of second commutation diode couples the second rectification output end, and negative pole couples the first pin；3rd commutation diode is just Pole couples the second pin, and negative pole couples the first rectification output end；The positive pole of 4th commutation diode couples the first pin, negative pole coupling Connect the first rectification output end.
Alternatively, two rectification circuits, the rectification output end of two rectification circuits are included in the power module It is in parallel.
Alternatively, described two rectification circuits, which each have, is used to connecing the end points of reference potential, and the two end points it Between be connected with inductance.
Alternatively, in addition to the 5th commutation diode and the 6th commutation diode；Wherein：5th commutation diode is just Pole couples the second rectification output end of the bridge rectifier, and negative pole couples the 3rd pin of the LED straight lamps；Described Six commutation diode positive poles couple the 3rd pin of the LED straight lamps, and the first of the negative pole coupling bridge rectifier is whole Flow output end.
Alternatively, in addition to the first fuse and the second fuse；First fuse is connected on the LED straight lamps The first pin and the bridge rectifier the first rectification input between；Second fuse is connected on the LED Between second pin of straight lamp and the second rectification input of the bridge rectifier.
Alternatively, conductive material is connected between the 3rd pin and the 4th pin of the LED straight lamps, in the 3rd pin With the 4th pin mistake access it is single-ended enter electricity lamp socket when, the conductive material can fuse.
Alternatively, the conductive material is thin wire.
Alternatively, in addition to installation detecting module, two installation sense terminals of the installation detecting module are serially connected in an institute The output end of rectification circuit is stated, the signal of the two installation sense terminals is flowed through for detecting, and is decided whether according to detecting result Cut-off external drive signal flows through the LED straight lamps.
Alternatively, first pin and the second pin are located at the lamp tube ends of the LED straight lamps respectively；The LED The both ends of the lamp plate of straight lamp respectively have two pads, and the power pad with the LED straight lamps welds together respectively；It is located at The lamp plate is connected with fuse between two pads of one end.
Alternatively, the fuse is thin wire.
Alternatively, the thickness of the cabling of the pad at the both ends of the lamp plate and pad body is at least up to 0.4mm.
According to the technical solution of the utility model, the rectification circuit in LED straight lamps is in the case where receiving AC signal Rectification can be carried out to drive LED component；And in the case where receiving direct current signal, no matter how direct current signal connects through first Pin, the input of the second pin, the positive pole of the rectified signal of rectification circuit are respectively positioned on the first rectification output end, and negative pole is respectively positioned on second Rectification output end；Therefore, no matter the rectification circuit received signal is AC signal or direct current signal, can correctly export whole Signal after stream.In the case where both-end list pin enters electricity, external drive signal can put on the first pin and the 3rd pin, or Put on the second pin and the 3rd pin；No matter AC signal is in positive half-wave or negative half-wave, the equal position of positive pole of rectified signal In the first rectification output end, negative pole is respectively positioned on the second rectification output end.In the case where the double pins of both-end enter electricity, if the 3rd pin Signal polarity it is identical with the first pin, then the running of the 5th commutation diode and the 6th commutation diode is similar to the second rectification Diode and the 4th commutation diode；On the other hand, if the signal polarity of the 3rd pin is identical with the second pin, the 5th rectification The running of diode and the 6th commutation diode is similar to the first commutation diode and the 3rd commutation diode.So this practicality is new LED straight lamps in type can it is compatible it is single-ended enter electricity, both-end list pin enters electricity and the double pins of both-end enter the power supply mode of electricity, make The existing lamp socket of user may continue to use, it is not necessary to more lamp changing base again.
Brief description of the drawings
Figure 1A is the circuit diagram according to the first rectification circuit of the utility model embodiment；
Figure 1B is the circuit diagram according to second of rectification circuit of the utility model embodiment；
Fig. 1 C are the circuit diagram according to the third rectification circuit of the utility model embodiment；
Fig. 1 D are the circuit diagram according to the 4th kind of rectification circuit of the utility model embodiment；
Fig. 2A is the circuit diagram according to the first installation detecting module of the utility model embodiment；
Fig. 2 B are the internal circuit blocks schematic diagram according to the integrated control module of the utility model embodiment；
Fig. 2 C are the circuit diagram according to the pulse generation auxiliary circuit of the utility model embodiment；
Fig. 2 D are the circuit diagram that auxiliary circuit is judged according to the detection of the utility model embodiment；
Fig. 2 E are the circuit diagram according to the on-off circuit of the utility model embodiment；
Fig. 3 A are that the internal circuit blocks for detecting integration module according to second of the utility model embodiment installation show It is intended to；
Fig. 3 B are the circuit diagram according to the signal processing unit of the utility model embodiment；
Fig. 3 C are the circuit diagram according to the signal generation unit of the utility model embodiment；
Fig. 3 D are the circuit diagram according to the signal gathering unit of the utility model embodiment；
Fig. 3 E are the circuit diagram according to the switch element of the utility model embodiment；
Fig. 3 F are the circuit diagram according to the internal electric source detecting unit of the utility model embodiment；
Fig. 4 is the cabling schematic diagram according to the LED module of embodiment of the present invention.
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, further included in the case of feasible, the band between each embodiment/components/modules changes and permutation and combination.
Figure 1A is referred to, rectification circuit 610 is bridge rectifier, includes the first commutation diode 611, the second rectification two Pole pipe 612, the 3rd commutation diode 613 and the 4th commutation diode 614, to carry out full-wave rectification to received signal. The positive pole of first commutation diode 611 couples the second rectification output end 512, and negative pole couples the second pin 502.The pole of second rectification two The positive pole of pipe 612 couples the second rectification output end 512, and negative pole couples the first pin 501.The positive pole of 3rd commutation diode 613 The second pin 502 is coupled, negative pole couples the first rectification output end 511.The positive pole of commutation diode 614 couples the first pin 501, Negative pole couples the first rectification output end 511.
When the signal that the first pin 501, the second pin 502 receive is AC signal, the operation description of rectification circuit 610 It is as follows.When AC signal is in positive half-wave, AC signal is sequentially through the first pin 501, the rectification of commutation diode 614 and first Flow into after output end 511, and sequentially flowed after the second rectification output end 512, the first commutation diode 611 and the second pin 502 Go out.When AC signal is in negative half-wave, AC signal is sequentially whole through the second pin 502, the 3rd commutation diode 613 and first Flow into after stream output end 511, and sequentially flowed out after the second rectification output end 512, the second commutation diode 612 and pin 501. Therefore, no matter AC signal is in positive half-wave or negative half-wave, it is whole that the positive pole of the rectified signal of rectification circuit 610 is respectively positioned on first Output end 511 is flowed, negative pole is respectively positioned on the second rectification output end 512.Illustrate according to aforesaid operations, rectification circuit 610 exports whole Signal is full wave rectified signal after stream.
When the first pin 501, the second pin 502 coupling dc source and when receiving direct current signal, the behaviour of rectification circuit 610 It is described as follows.When the first pin 501 couples the anode of dc source and the second pin 502 couples the negative terminal of dc source, Direct current signal sequentially flows into after the first pin 501, the rectification output end 511 of commutation diode 614 and first, and sequentially through second Flowed out after rectification output end 512, the first commutation diode 611 and the second pin 502.When the first pin 501 couples dc source Negative terminal and the second pin 502 coupling dc source anode when, AC signal is sequentially through the second pin 502, the 3rd rectification two Flowed into after the rectification output end 511 of pole pipe 613 and first, and sequentially through the second rectification output end 512, the second commutation diode 612 Flowed out with after the first pin 501.Similarly, it is whole no matter how direct current signal inputs through the first pin 501, the second pin 502 The positive pole of the rectified signal of current circuit 610 is respectively positioned on the first rectification output end 511, and negative pole is respectively positioned on the second rectification output end 512。
Therefore, no matter the received signal of rectification circuit 610 in the present embodiment is AC signal or direct current signal, Correct output rectified signal.
In an exemplary embodiment, the configuration of rectification circuit can be as shown in Figure 1B.Figure 1B is referred to, rectification circuit 910 wraps First to fourth commutation diode 911-914 is included, it is configured as described in earlier figures 1A embodiments.In the present embodiment, rectified current Road 910 further includes the 5th commutation diode 915 and the 6th commutation diode 916.The positive pole coupling the of 5th commutation diode 915 Two rectification output ends 512, negative pole couple the 3rd pin 503.The positive pole of 6th commutation diode 916 couples the 3rd pin 503, bears Pole couples the first rectification output end 511.4th pin 504 is floating in this.
In particular, the rectification circuit of the present embodiment can be considered the rectified current for having three groups of bridge arm (BRIDGEARM) units Road, every group of bridge arm unit can provide an input signal receiving terminal.For example, the first commutation diode 911 and the 3rd rectification Diode 913 forms the first bridge arm unit, its corresponding signal received on the second pin 502；Second commutation diode 912 and Four commutation diodes 914 form the second bridge arm unit, its corresponding signal received on the first pin 501；And the 5th rectification two The commutation diode 916 of pole pipe 915 and the 6th forms the 3rd bridge arm unit, its corresponding signal received on the 3rd pin 503.Its In, 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 Figure 1B embodiments, it is same it is compatible it is single-ended enter electricity, both-end list pin enter electricity and the double pins of both-end Enter the power supply mode of electricity.Specific running is described as follows：
It is single-ended enter electricity in the case of, external drive signal is put on the first pin 501 and the second pin 502, now First to fourth commutation diode 911-914 running is as described in earlier figures 1A embodiments, and the 5th commutation diode 915 and Six commutation diodes 916 are 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 sequentially through the second rectification Flowed out after output end 512, the second commutation diode 912 and the first pin 501.Therefore, though AC signal be in positive half-wave or Negative half-wave, the positive pole of rectified signal are respectively positioned on the first rectification output end 511, and negative pole is respectively positioned on the second rectification output end 512.According to Illustrate according to aforesaid operations, the second commutation diode 912 in rectification circuit 910, the 4th commutation diode 914, the 5th rectification two The commutation diode 916 of pole pipe 915 and the 6th carries out full-wave rectification to AC signal, and the rectified signal exported is whole for all-wave Flow 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 Figure 1A 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. 1 C are referred to, Fig. 1 C are roughly the same with Figure 1B, and both differences are the input of Fig. 1 C the first rectification circuit 910 End 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.Insurance 947 one end of silk couple the first pin 501, and the other end is coupled to being total to for the second commutation diode 912 and the 4th commutation diode 914 Node (that is, the input of the first bridge arm unit).The one end of fuse 948 couples the second pin 502, and it is whole that the other end is coupled to first Flow the conode (that is, the input of the second bridge arm unit) of the commutation diode 913 of diode 911 and the 3rd.Thereby, when first connects When 501 and second pin of pin, 502 any electric current flowed through is higher than the rated current of fuse 947 and 948, fuse 947 and 948 It will accordingly fuse and open a way, thereby reach the function of overcurrent protection.In addition, in fuse 947 and 948 only wherein One of in the case of fusing (such as excessively stream situation only occur that of short duration time eliminates), if entering electric confession using both-end pair pins Fluorescent tube electrically is driven, then the rectification circuit of the present embodiment can also be after the elimination of excessively stream situation, confession based on both-end list pin Power mode and continued operation.
Fig. 1 D are referred to, Fig. 1 D are roughly the same with Figure 1B, and both differences are that Fig. 1 D two pins 503 pass through with 504 Thin wire 917 links together.For earlier figures 1B or Fig. 1 C embodiment, when entering electricity using both-end list pin, no The 3rd pin 503 or the 4th pin 504 are consequently exerted at by external drive signal, the rectification circuit of the present embodiment all can be transported normally Make.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, the thin wire of the present embodiment 917 can reliably fuse, therefore when fluorescent tube turns back to correct lamp socket, remain to remain normal using the straight lamp of this rectification circuit Rectification work.
From the foregoing, the rectification circuit of Figure 1B to Fig. 1 D 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 Figure 1B to Fig. 1 D embodiment inside fluorescent tube only needs to set three pads To be connected to corresponding lamp holder pin, the lifting for overall process yield has significant contribution.Entering electrically a variety ofization In the case of, it is contemplated that the security of personnel during mounted lamp, installation detecting module is proposed in the utility model embodiment.
It is beneath to be illustrated the integrated circuit running for just installing detecting module again.First it is noted that this practicality is new The principle that type will not be undergone mutation using capacitance voltage；Electric capacity in LED straight lamp electric power loops before electric power loop conducting, its Both end voltage 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 response current-limiting resistance is smaller and peak value of response electric current is larger, when electric power loop is not installed on lamp correctly in LED straight lamps During seat, the principles such as its transient response current-limiting resistance is larger and peak value of response electric current is smaller are carried out, and make LED straight lamps Leakage current is less than 5MIU.Below will in normal work, (LED straight lamps both ends lamp holder be correctly installed on regard to LED straight lamps In lamp socket) with changing lamp test when (i.e. LED straight lamps one end lamp holder is installed in lamp socket and the other end lamp holder contact human body) one reality The magnitude of current for applying example compares：
Wherein, in denominator part, RFUSE is the fuse resistance (10 ohm) of LED straight lamps, and 500 ohm are simulation Resistance of the conductive characteristic of human body in transient response；And in molecular moiety, take rms voltage 90V~305V maximum voltage It is worth (305*1.414) and minimum voltage difference 50V.If from above example it is known that LED straight lamps both ends lamp holder just Really it is installed in lamp socket, minimum transient current during its normal work is 5A；But when LED straight lamps one end lamp holder is installed on lamp socket When interior and other end lamp holder contacts human body, its maximum transient current but only has 845MA.Therefore, the utility model utilization can pass through Transient response flow through in LED power loop electric capacity (such as：The filter capacitor of filter circuit) electric current to detect LED straight lamps With the installment state of lamp socket, that is, detect whether LED straight lamps are correctly installed in lamp socket, and in LED straight lamps not yet just Really when being installed in lamp socket, a protection mechanism is more provided got an electric shock with avoiding user because of false touch LED straight lamp current-carrying parts Problem.The above embodiments only and are not used to limit implementation of the present utility model to illustrate the utility model.
In addition, at this point it is to be emphasized that, the installation detecting module disclosed by the utility model is applicable to other both-ends and entered The LED illumination device of electricity, such as：LED with Double-End Source construction for electricity and comprising directly utilizing civil power or utilize town For the signal that stream device is exported as LED of external drive voltage etc., the utility model is not intended to limit answering for installation detecting module Use scope.
Refer to Fig. 2A, the installation detecting module in Fig. 2A can include the integrated control of a pulse generation auxiliary circuit 2840, one Molding block 2860, an on-off circuit 2880 and a detection judge auxiliary circuit 2870.Wherein, integrated control module 2860 is at least Including three pin positions such as two input IN1, IN2 and output end OT.Pulse generation auxiliary circuit 2840 is electrically connected with integrated control The input IN1 and output end OT of molding block 2860, to aid in integrated control module 2860 to produce a control signal.Detection is sentenced Determine input IN2 and on-off circuit 2880 that auxiliary circuit 2870 is electrically connected with integrated control module 2860, it can be used to opening When powered-down road 2880 turns on LED power loop, passback is associated with sampled signal on electric power loop to integrated control module 2860 input IN2 so that integrated control module 2860 can judge the peace of LED straight lamps and lamp socket based on this sampled signal Dress state.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 so that LED Straight lamp electric power loop turns on.
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 correctly be pacified according to the signal detection LED straight lamps on input IN2 It is filled in lamp socket and latches testing result, is used as the foundation that on-off circuit 2880 whether is turned on after reconnaissance phase terminates (that is, deciding whether normal power supply to LED module).The thin portion circuit framework of each several part and the explanation of integrated circuit running in Fig. 2A To successively it be described in down.
Fig. 2 B are referred to, integrated control module 2860 includes impulse generating unit 2862, testing result latch units 2863 And detection unit 2864.Impulse generating unit 2862 can receive pulse generation auxiliary circuit 2840 from input IN1 and be provided Signal, and produce an at least pulse signal according to this, 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 the coupling of its input is integrated The input IN1 of control module 2860, and the output end OT of its output end coupling integrated control module 2860.But the utility model Impulse generating unit 2862 be not limited only to implement using the circuit framework of schmitt trigger.It is any to realize generation extremely The analog/digital circuit framework of a few pulse signal function 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 flip-flop has a data input pin, a frequency input and an output end.The data Input connects driving voltage VCC, the frequency input connecting detection unit 2864.OR gate has a first input end, one the Two inputs and an output end, first input end connection impulse generating unit 2862, second input connection D flip-flop Output end, and the output end connection output end OT of OR gate.But testing result latch units 2863 of the present utility model not only limit Implement in using the circuit framework of D flip-flop and OR gate.It is any to realize latch and output control signal is to control out The analog/digital circuit framework for the function that powered-down road 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 auxiliary circuit 2870 is provided 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 an output End, the first input end connect a setting signal, second input connection input IN2, and the output end connection of comparator Testing result latch units 2863.But detection unit 2864 of the present utility model is not limited only to using D flip-flop and OR gate Circuit framework is implemented.Any can realize judges what whether LED straight lamps were properly installed according to the signal on input IN2 Analog/digital circuit framework all can be applied to this.
Fig. 2 C are referred to, pulse generation auxiliary circuit 2840 includes resistance 2842,2844 and 2846, electric capacity 2843 and crystalline substance Body pipe 2845.One end of resistance 2842 connects a driving voltage (such as VCC).The other end of one end resistance 2842 of electric capacity 2843, And the other end ground connection of electric capacity 2843.The connection end of one end connection resistance 2842 and electric capacity 2843 of resistance 2844.Transistor 2845 have a base terminal, 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 Ground connection.The base terminal of one end connection transistor 2845 of resistance 2846, and the other end of resistance 2846 connects via path 2841 To the output end OT and on-off circuit 2840 of integrated control module 2840 control terminal.Pulse generation auxiliary circuit 2840 further includes Zener diode 2847, it has an anode tap and a cathode terminal, and the other end ground connection of anode tap connection electric capacity 2843 should One end that cathode terminal connection electric capacity 2863 is connected with resistance 2842.
Fig. 2 D are referred to, detection judges that auxiliary circuit 2870 includes resistance 2872,2873 and 2874, electric capacity 2875 and two Pole pipe 2876.One end of one end connecting valve circuit 2880 of resistance 2872, and the other end connection LED power of resistance 2872 is returned Road the other end (such as：Second installation sense terminal 2522).One end of resistance 2873 connects the driving voltage (such as VCC).Resistance 2874 one end connects the other end of resistance 2873, and the input of integrated control module 2860 is connected to via path 2871 IN2, and the other end ground connection of resistance 2874.Electric capacity 2875 is in parallel with resistance 2874.Diode 2876 has an anode tap and one Cathode terminal, the anode tap connect one end of resistance 2872, and the connection end of cathode terminal connection resistance 2873 and 2874.Some In embodiment, above-mentioned resistance 2873, resistance 2874, electric capacity 2875 and diode 2876 can be omitted, when diode 2876 When being omitted, one end of resistance 2872 is directly connected to the input IN2 of integrated control module 2860 via path 2871.At certain In a little embodiments, considered based on power factor (PF), resistance 2872 can be two resistor coupled in parallel, and its equivalent resistance includes 0.1 ohm To 5 ohm.
Fig. 2 E are referred to, on-off circuit 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 is connected to the output end OT of integrated control module 2860, transistor 2882 via path 2861 Collector terminal connection LED power loop one end (such as：First installation sense terminal 2521), and the emitter-base bandgap grading end through body pipe 2882 Connecting detection judges auxiliary circuit 2870.Wherein, the also replaceable equivalent elements into other electronic switch of transistor 2882, example 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 and foregoing reality Apply that example is identical, be all based on the principle that capacitance voltage will not undergo mutation, the electric capacity in LED straight lamp electric power loops returns in power supply Before the conducting of road, its both end voltage is zero and short-circuit condition is presented in transient response；And when electric power loop is correctly pacified in LED straight lamps During loaded on lamp socket, its transient response current-limiting resistance is smaller and peak value of response electric current is larger, when electric power loop in LED straight lamps not just When being really installed on lamp socket, the principles such as its transient response current-limiting resistance is larger and peak value of response electric current is smaller are carried out, and are made The leakage current of LED straight lamps is less than 5MIU.In other words, exactly LED straight tubes are judged through the mode of detecting peak value of response electric current Whether lamp is correctly installed in lamp socket.Therefore on before normal work and the transient current part changed under lamp test can refer to The explanation of embodiment is stated, it is no longer repeated in this.It is beneath to be illustrated the integrated circuit running for only just installing detecting module.
Referring again to Fig. 2A, 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.Pulse generation auxiliary circuit 2840 can react Charging action is carried out in driving voltage VCC.Over time (this section time determine pulse period), its output voltage (in This claims the first output voltage) being increased over one from one first low level voltage, forward (magnitude of voltage can be according to circuit for threshold voltage Design and define), and exported via a path 2841 to the input IN1 of integrated control module 2860.Integrated control module 2860 after input IN1 receives the first output voltage, and the control signal that an enable is exported via a path 2861 (is, for example, one High levle voltage) to on-off circuit 2880 and pulse generation auxiliary circuit 2840.When on-off circuit 2880 receives the control of this enable After signal processed, on-off circuit 2880, which turns on, causes an electric power loop of LED straight lamps (to comprise at least the 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 IN1 receives 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.Work as switch After circuit 2880 receives the control signal of this enable, on-off circuit 2880, which turns on, causes the electric power loop of LED straight lamps (at least to wrap Include the first installation sense terminal 2521, on-off circuit 2880, path 2881, the detection judgement installation detecting of auxiliary circuit 2870 and second 2522) end also turns on again.At the same time, pulse generation auxiliary circuit 2840 can react on the control signal of enable again and lead Logical discharge path simultaneously carries out discharging action, and after the control signal of the enable returned by integrated control module 2860 is received A period of time (this section time determine pulse width), the first output voltage from the voltage quasi position more than forward threshold voltage again Gradually drop back to the first low level voltage.Wherein, when the first output voltage is decreased below reverse threshold voltage, control mould is integrated Block 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 has Have impulse form signal waveform (that is, by the low level voltage of the third time in control signal, secondary high levle voltage with The low level voltage of the 4th time forms one second pulse signal).And detect the power supply for judging auxiliary circuit 2870 in LED straight lamps When loop turns on again, also detect again on its loop one second sampled signal (such as：Voltage signal), and second is taken Sample signal is supplied to integrated control module 2960 via input IN2.When this second sampled signal is more than and/or believes equal to setting Number (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 lamp In seat, 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 2B to Fig. 2 E, when LED straight lamps change the outfit in lamp socket, a driving voltage VCC charges via resistance 2842 to electric capacity 2843, 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.When the base terminal of transistor 2882 receive exported from testing result latch units 2863 the After two high levle voltages, the collector terminal of transistor 2882 turns on emitter-base bandgap grading end, and then causes the electric power loop of LED straight lamps (extremely Include the first installation sense terminal 2521, transistor 2882, resistance 2872 and second less and sense terminal 2522 be installed) conducting.
And at the same time, the base terminal of transistor 2845 is via the second high levle electricity on the Rreceive output end OT of resistance 2846 After pressure, the collector terminal of transistor 2845 turns on ground connection with emitter-base bandgap grading end so that the voltage of electric capacity 2843 is put over the ground via resistance 2844 Electricity, when the undertension of electric capacity 2843 is with trigger pulse generation unit 2862, the output of impulse generating unit 2862 is from first 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 it is secondary First low level voltage forms one first pulse signal).And when the electric power loop conducting of LED straight lamps, pass through transient response 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.
Fig. 3 A are referred 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 switch terminal SP2 trigistor 2920.Wherein, the power end VP1 of trigistor 2920 is suitable to connect Receive driving voltage VCC, the first switch terminal SP1 and be adapted to the first installation sense terminal 2521 and the second installation sense terminal 2522 wherein One of (be depicted as the installation sense terminal 2521 of connection first in schema, but be not limited only to this), and the second switch terminal SP2 is suitable to The installation sense terminal 2521 of connection first with the second installation sense terminal 2522 is wherein another (is depicted as being connected second in schema to pacify Sense terminal 2522 is filled, but is not limited only to this).
Trigistor 2920 includes signal processing unit 2930, signal generation unit 2940, signal gathering unit 2950 and switch element 2960.In addition, trigistor 2920 can further include internal electric source detecting unit 2970.At signal The signal that reason unit 2930 can be provided according to signal generation unit 2940 and signal gathering unit 2950, and it is defeated in reconnaissance phase Go out the control signal with impulse waveform, and output maintains the control of high voltage level or low voltage level after reconnaissance phase Signal processed, with the conducting state of controlling switch unit 2960, use the electric power loop for deciding whether to turn on LED straight lamps.Signal Generation unit 2940 can produce pulse signal to signal processing unit 2930 when receiving driving voltage VCC.Wherein, signal Produced by pulse signal caused by generation unit 2940 can be a reference signal of the basis from external reception, or by it Body is independently produced, and the utility model is any limitation as not to this.＂ is relative to signal generation unit 2940 outside the ＂ described in this For, as long as that is, right and wrong reference signal as caused by signal generation unit 2940, either in trigistor 2920 Produced by other circuits, or as produced by the external circuit of trigistor 2940, come under described herein from outside The reference signal of reception.Signal gathering unit 2950 can be used to sample the electric signal on the electric power loop of LED straight lamps, and root The installment state of LED straight lamps is detected according to the signal being sampled to, then the testing result signal for indicating testing result is transmitted to letter Number processing unit 2930 is handled.
In an exemplary embodiment, the trigistor 2920 can be realized using integrated circuit, that is, described three End 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 electricity In 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 wrapped Containing 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 reality Apply the scope 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. 3 B to Fig. 3 F circuit framework respectively It is limited to this).Beneath point illustrates with regard to each unit.
Fig. 3 B are referred to, signal processing unit 2930 includes driver 2932, OR gate 2933 and D flip-flop 2934. Driver 2932 has input and output end, and the output end of driver 2932 is to through the connecting valve unit of path 2931 2960, use and supply control signals to switch element 2960.OR gate 2933 has first input end, the second input and defeated Go out end.The first input end of OR gate 2933 connects signal generation unit 2940, and the output end of OR gate 2933 through path 2941 The input of coupling drivers 2932.D flip-flop 2934 has data input pin (D), frequency input (CK) and output end (Q).The data input pin of D flip-flop 2934 receives driving voltage VCC, and the frequency input of D flip-flop 2934 is through path 2951 are connected to signal gathering unit 2950, and the second input of the output end coupling OR gate 2933 of D flip-flop.
Fig. 3 C are referred to, Fig. 3 C are to illustrate according to the circuit of the signal generation unit of the preferred embodiment of the utility model the 4th Figure.Signal generation unit 2940 includes resistance 2942 and 2943, electric capacity 2944, switch 2945 and comparator 2946.Resistance 2942 one end is connected to internal electric source detecting unit 2970 via path 2961, use receive it is adjusted after driving voltage VCC, and resistance 2942, resistance 2943 and electric capacity 2944 are serially connected between driving voltage VCC and earth terminal.Switch 2945 with Electric capacity 2944 is in parallel.Comparator 2946 has first input end, the second input and output end.The first of comparator 2946 is defeated Entering to hold the connection end of coupling resistance 2942 and 2943, the second input of comparator 2946 receives a reference voltage VREF, and The control terminal of the output end coupling switch 2945 of comparator 2946.
Fig. 3 D are referred to, signal gathering unit 2950 includes OR gate 2952 and comparator 2953 and 2954.OR gate 2952 With first input end, the second input and output end, the output end of OR gate 2952 is connected to signal via path 2951 and adopted Collect unit 2950.The first input end of comparator 2953 is connected to one end (that is, LED of switch element 2960 via path 2962 On the electric power loop of straight lamp), the second input of comparator 2953 receives one first reference voltage (such as 1.25V, but do not limit In this), and the first input end of the output end coupling OR gate 2952 of comparator 2953.The first input end of comparator 2953 connects One second reference voltage (such as 0.15V, but be not restricted to this) is received, the second input coupling comparator 2953 of comparator 2953 First input end, and the second input of the output end coupling OR gate 2952 of comparator 2953.
Fig. 3 E are referred to, switch element 2960 includes transistor 2963, and it has gate terminal, drain electrode end and source terminal.It is brilliant The gate terminal of body pipe 2963 is connected to signal processing unit 2930 via path 2931, and the drain electrode end of transistor 2963 is via path 2961 are connected to the first switch terminal SP1, and the source terminal of transistor 2963 is connected to the first switch terminal via path 2962 SP2, the first input end of comparator 2953 and comparator 2954 the second input.
Fig. 3 F are referred to, are to be illustrated according to the circuit of the internal electric source detecting unit of the preferred embodiment of the utility model the 4th Figure.Internal electric source detecting unit 2970 includes clamp circuit 2972, generating circuit from reference voltage 2973, voltage-regulating circuit 2974 And schmitt trigger 2975.Clamp circuit 2972 is respectively coupled to power end VP1 with voltage-regulating circuit 2974, is driven with receiving Dynamic voltage VCC, use and carry out voltage clamp and the action of voltage adjustment to driving voltage VCC respectively.Generating circuit from reference voltage 2973 coupling voltage-regulating circuits, to produce a reference voltage to voltage-regulating circuit 2974.Schmitt trigger 2975 has There are input and output end, its input coupling clamp circuit 2972 and voltage-regulating circuit 2974, and the output of its output end is driven Dynamic voltage to indicate driving voltage VCC whether a power supply confirmation signal of regular supply.Wherein, if driving voltage VCC is in The state of regular supply, schmitt trigger 2975 can export enable (such as high levle) power supply confirmation signal so that driving Voltage VCC is provided to each components/circuits in trigistor 2920.On the contrary, if driving voltage VCC is in exception State, schmitt trigger 2975 can export forbidden energy (such as low level) power supply confirmation signal, use and avoid three-terminal switch device Each component/circuit because in part 2920 is operated under abnormal driving voltage VCC and damaged.
Referring to Fig. 3 A to Fig. 3 F, in the running of the present embodiment physical circuit, when LED straight lamps change the outfit in lamp socket When, driving voltage VCC can be provided to trigistor 2920 via power end VP1.Now, driving voltage VCC can be via Resistance 2942 charges with 2943 pairs of electric capacity 2944.And when capacitance voltage is increased over reference voltage VREF, comparator 2946 The 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 switched This 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, comparator 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 levle Voltage 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 supply When loop is circulated, the voltage signal of corresponding current size can be established on path 2972.Comparator 2953 can sample this voltage letter Number 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 levle Voltage.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 touch Send out the frequency input of device 2934.D flip-flop 2934 understands the output based on OR gate 2952 and maintains to export high levle voltage.Drive High levle voltage that dynamic device 2932 can be reacted on input and produce the control signal of enable to turn on transistor 2963.This When, even if electric capacity 2944 has been discharged to capacitance voltage and has been less than reference voltage VRE, and make comparator 2946 output be pulled down to it is low Level voltage, because D flip-flop 2934 can maintain to export high levle voltage, therefore transistor 2963 can be maintained at conducting State.
When the voltage signal being sampled to is less than the first reference voltage (such as 1.25V), comparator 2953 can export low level Voltage.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 touch Send out the frequency input of device 2934.D flip-flop 2934 understands the output based on OR gate 2952 and maintains to export low level voltage.This When, once electric capacity 2944, which is discharged to capacitance voltage, is less than reference voltage VRE, and the output of comparator 2946 is pulled down to low level Voltage (that is, at the end of during pulse), because two inputs of OR gate 2933 are all maintained at low level voltage so that output end Also low level voltage is exported, therefore driver 2932 can react on the control signal that the low level voltage received produces forbidden energy "off" transistor 2963 so that the electric power loop of LED straight lamps is turned off.
Refer to Fig. 4, Fig. 4 be according to the cabling schematic diagram of the LED module of embodiment of the present invention, wherein, Fig. 4 is to illustrate The configuration of lamp plate end pad.In the present embodiment, the pad b1 on lamp plate and b2 is suitable to the power pad with power supply circuit board Weld together.Wherein, the pad configuration of the present embodiment is applicable to entering electrically for both-end list pin, that is, the weldering of the same side Disk can receive the external drive signal of identical polar.
Specifically, the pad b1 and b2 of the present embodiment can link together through the fuse FS of S types, wherein fuse FS can be for example to be formed with thin wire, and its impedance is at a fairly low, therefore can be considered as pad b1 together with b2 short circuits.Correct Application situation under, pad b1 and b2 can the corresponding external drive signals for receiving identical polar.And by the configuration, even if weldering Disk b1 and b2 misconnection to opposite polarity external drive signal, fuse FS can also react on by high current fuse, from And fluorescent tube is avoided to damage.In addition, after fuse FS fusing, it can form that pad b2 skies connect and pad b1 is still connected to lamp plate Configuration, therefore lamp plate remains to receive external drive signal through pad b1 and be continuing with.
On the other hand, in an exemplary embodiment, the thickness of pad b1 and b2 cabling and pad body is at least up to 0.4mm, actual (real) thickness can be according to the understandings of those skilled in the art, from thickness more than 0.4mm's under enforceable situation Any thickness.After empirical tests, it is at least up in pad b1 and b2 cabling and the thickness of pad body under 0.4mm configuration, When lamp plate docks through pad b1 with b2 and power supply circuit board to be placed into fluorescent tube, even if the copper foil at pad b1 and b2 is rolled over Disconnected, the copper foil of the more affixs in its periphery can also connect the circuit of lamp plate and power supply circuit board so that fluorescent tube can be normal Work.
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 two small power supply modules (it is cumulative and is predetermined power), is separately positioned on LED straight lamps In the lamp holder of both sides.
In power supply module design, described external drive signal can be low-frequency ac signal (such as：Civil power is carried For), high frequency ac signal (such as：Electric ballast is provided) or direct current signal is (by accessory power supply mould such as：Battery is carried For).
Described external drive signal be low-frequency ac signal (such as：Civil power is provided) or direct current signal (such as：Battery There is provided) LED straight lamps can be applied to both-end enter electricity (wiring) mode, can also support wherein one end using as it is single-ended enter electricity I.e. at this moment LED straight lamps support single-ended or both-end to enter electricity to (wiring) mode of (power supply), while LED straight lamps apply also for answering The 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 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.
Above-mentioned embodiment, the limitation to scope of protection of the utility model is not formed.Those skilled in the art should Should 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 practicality Within the scope of novel protected.

Claims (11)

1. a kind of LED straight lamps, the LED straight lamps, which include, is used for luminous LED component and the power supply for driving the LED component Module, rectification circuit is included in the power module, and there is the first pin and the second pin in the pin of the LED straight lamps, It is characterized in that：
The rectification circuit is full-wave bridge rectifier circuit, and it includes the first commutation diode, the second commutation diode, the 3rd whole Flow diode and the 4th commutation diode；Wherein：
The positive pole of first commutation diode couples the second rectification output end, and negative pole couples the second pin；
The positive pole of second commutation diode couples the second rectification output end, and negative pole couples the first pin；
The positive pole of 3rd commutation diode couples the second pin, and negative pole couples the first rectification output end；
The positive pole of 4th commutation diode couples the first pin, and negative pole couples the first rectification output end.
2. LED straight lamps according to claim 1, it is characterised in that two rectifications are included in the power module Circuit, the rectification output end of two rectification circuits are in parallel.
3. LED straight lamps according to claim 2, it is characterised in that described two rectification circuits, which each have, to be used to connect The end points of reference potential, and it is connected with inductance between the two end points.
4. LED straight lamps according to claim 1, it is characterised in that also including the 5th commutation diode and the 6th rectification Diode；Wherein：
The 5th commutation diode positive pole couples the second rectification output end of the bridge rectifier, described in negative pole coupling 3rd pin of LED straight lamps；
The 6th commutation diode positive pole couples the 3rd pin of the LED straight lamps, and negative pole couples the bridge rectifier electricity First rectification output end on road.
5. LED straight lamps according to claim 1, it is characterised in that also including the first fuse and the second fuse；
The first rectification that first fuse is connected on the first pin and the bridge rectifier of the LED straight lamps is defeated Enter between end；
The second rectification that second fuse is connected on the second pin and the bridge rectifier of the LED straight lamps is defeated Enter between end.
6. LED straight lamps according to claim 1, it is characterised in that
Conductive material is connected between the 3rd pin and the 4th pin of the LED straight lamps,
The 3rd pin and the 4th pin mistake access it is single-ended enter electricity lamp socket when, the conductive material can fuse.
7. LED straight lamps according to claim 6, it is characterised in that the conductive material is thin wire.
8. the LED straight lamps according to any one of claim 2-7, it is characterised in that also include installation detecting module, should Two installation sense terminals of installation detecting module are serially connected in the output end of a rectification circuit, and the two are flowed through for detecting The signal of sense terminal is installed, and decides whether that ending external drive signal flows through the LED straight lamps according to detecting result.
9. LED straight lamps according to claim 1, it is characterised in that
First pin and the second pin are located at the lamp tube ends of the LED straight lamps respectively；
The both ends of the lamp plate of the LED straight lamps respectively have two pads, and the power pad with the LED straight lamps welds respectively Together；
Fuse is connected between two pads of the lamp plate with one end.
10. LED straight lamps according to claim 9, it is characterised in that the fuse is thin wire.
11. LED straight lamps according to claim 9, it is characterised in that the cabling of the pad at the both ends of the lamp plate and weldering The thickness of disk body is at least up to 0.4mm.
CN201720188642.8U 2016-01-26 2016-12-07 LED straight lamps Active CN206904652U (en)

Applications Claiming Priority (23)

Application Number Priority Date Filing Date Title
CN2016100516917 2016-01-26
CN201610051691 2016-01-26
CN2016101325137 2016-03-09
CN201610132513 2016-03-09
CN2016101777064 2016-03-25
CN201610177706 2016-03-25
CN2016108765937 2016-10-08
CN201610876593 2016-10-08
CN201610878349 2016-10-08
CN2016108783494 2016-10-08
CN201610890527 2016-10-12
CN2016108905275 2016-10-12
CN201610955338 2016-10-27
CN2016109553381 2016-10-27
CN201610955342 2016-10-27
CN2016109553428 2016-10-27
CN201610975119 2016-11-03
CN201610975119X 2016-11-03
CN201611057357 2016-11-25
CN2016110573579 2016-11-25
CN201611108723 2016-12-06
CN2016111087239 2016-12-06
CN201621344288.5U CN206386705U (en) 2016-01-22 2016-12-07 A kind of LED straight lamps

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