CN104540304B - Electronic replacement-type double-end straight-tube LED fluorescent lamp and safety protection circuit thereof - Google Patents
Electronic replacement-type double-end straight-tube LED fluorescent lamp and safety protection circuit thereof Download PDFInfo
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- CN104540304B CN104540304B CN201510023550.XA CN201510023550A CN104540304B CN 104540304 B CN104540304 B CN 104540304B CN 201510023550 A CN201510023550 A CN 201510023550A CN 104540304 B CN104540304 B CN 104540304B
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Abstract
The invention relates to an electronic replacement-type double-end straight-tube LED fluorescent lamp and a safety protection circuit thereof. The safety protection circuit comprises a fluorescent-lamp tube simulating cathode circuit connected to a first output end and a second output end of a fluorescent-lamp electronic ballast, wherein the output end of the fluorescent-lamp tube simulating cathode circuit is connected with a first anode of a bidirectional silicon controlled rectifier, and a second anode of the bidirectional silicon controlled rectifier is connected to the input end of a high-frequency rectifying and filtering circuit of the double-end straight-tube LED fluorescent lamp by a fourth capacitor and a fifth capacitor; a high-frequency triggering circuit capable being triggered and conducted under the high-frequency state of more than 10KHz is arranged between a control electrode of the bidirectional silicon controlled rectifier and the output end of the fluorescent-lamp tube simulating cathode circuit; or an open-circuit state with distributed capacitance is arranged between the control electrode of the bidirectional silicon controlled rectifier and the output end of the fluorescent-lamp tube simulating cathode circuit; and circuits at a third output end and a fourth output end of the fluorescent-lamp electronic ballast are symmetrical to circuits at the first output end and the second output end.
Description
Technical field
A kind of the present invention relates to lighting technical field, more particularly, it relates to electronic type substituted type double end and straight tube led daylight
Lamp and its safety protective circuit.
Background technology
Led fluorescent tube possesses luminous efficiency height and the low advantage of energy consumption because of it, has progressively replaced conventional fluorescent fluorescent tube, more
More widely to be applied to various occasions, to realize the purpose of efficient illumination and energy-conservation.Traditional currently used for directly replacing
The both-end substituted type LED lamp pipe of fluorescent tube, is not required to original fitting structure is made modification and enables to replace.Refer to patent
Application cn 103929858 a, disclose in this application the led fluorescent tube that a kind of utilization electronic ballast for fluoresent lamp drives and
Lighting, wherein passes through the Filament of fluorescent lamp impedance realization with electronic ballast for fluoresent lamp using filtering high-frequency rectifier unit
Join, and realize by led module that luminous to can reach led fluorescent tube adaptation glimmering so that not needing light fixture is improved construction
Light lamp electronic ballast realizes the purpose of illumination.
Specify to require according to international iec62776-2012 and iec62776-2014, need to for substituting conventional fluorescent
Both-end LED lamp carry out multinomial safety test.Wherein specify, when only one end lamp holder is inserted into lamp socket, electricity can be delivered to another
The lamp holder end being also not inserted into, now should not cause electric shock, to verify its accordance using following detection method: the circuit of lamp is connect
Logical rated voltage, and only allow one end of lamp socket enter electricity, fluorescent tube one end lamp holder inserts lamp socket, requires according to iec 60598-1 annex a
To detect that the other end lamp holder being not inserted into lamp socket do not have conductive component can cause electric shock.In addition, also specify according to iec61347-
The requirement of 1 annex a, lamp holder pin foot or contact are no less than 2m ω to the insulation resistance between other end lamp holder pin foot or contact.
When carrying out megger test, apply about 500v DC voltage in humidity chamber.Should be immediately after carrying out dielectric strength test
Carry out dielectric strength test.During dielectric test, applied voltage is more than 1500v.
But in the led fluorescent lamp tube circuit scheme of above-mentioned prior art, connect led module rectification filtering unit with glimmering
Light lamp electronic ballast is directly connected to, middle no any safety protective circuit, therefore by above-mentioned, both-end LED lamp cannot be carried out
Multinomial safety test, there is great potential safety hazard.
Content of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, provides one kind to meet the world
The electronic type substituted type double end and straight tube led daylight lamp of iec62776-2012 and iec62776-2014 safety code requirements and its peace
Full protection circuit.
The technical solution adopted for the present invention to solve the technical problems is:
Construct a kind of electronic type substituted type double end and straight tube led safe fluorescent-lamp protection circuit, wherein, including being connected to fluorescence
The fluorescent tube simulation cathode circuit of the first outfan of lamp electronic ballast and the second outfan；Wherein, described fluorescent tube
The outfan of simulation cathode circuit is connected with a two-way silicon controlled first anode, and the second plate of described bidirectional triode thyristor passes through
The input of the 4th electric capacity and the 5th capacitance connection rectifier filter circuit to double end and straight tube led daylight lamp；
It is provided between the outfan of the control pole of described bidirectional triode thyristor and described fluorescent tube simulation cathode circuit
High frequency triggers circuit more than triggering and conducting under the high frequency state of 10khz；
Or, for depositing between the outfan of the control pole of described bidirectional triode thyristor and described fluorescent tube simulation cathode circuit
Open-circuit condition in distribution capacity；
The circuit setting of the 3rd outfan of described electronic ballast for fluoresent lamp and the 4th outfan and described first output
The circuit of end and described second outfan arranges symmetrical.
Safety protective circuit of the present invention, wherein, described high frequency triggers circuit includes the 3rd electric capacity, described 3rd electricity
The capacitance span held is 1p-10 μ f；
Or, described high frequency triggers circuit is made up of the 6th electric capacity being serially connected and the 7th electric capacity, described 6th electric capacity
It is 1p-10 μ f with the capacitance span of the 7th electric capacity；
Or, described high frequency triggers circuit is made up of the 8th electric capacity being connected in series and the 9th resistance, the electricity of the 8th electric capacity
Capacity span is 1p-10 μ f, and the span of described 9th resistance is 1 ω -10 ω；
Described bidirectional triode thyristor be 1-5a and pressure more than 1kv.
Safety protective circuit of the present invention, wherein, after described fluorescent tube simulation cathode circuit includes being serially connected
It is connected to the first resistor between described first outfan of electronic ballast for fluoresent lamp and described second outfan and the second electricity
Resistance, described first resistor two ends are connected in parallel to the first electric capacity, and described second resistance two ends are connected in parallel to the second electric capacity；Its
In,
Junction point between described first resistor and described second resistance is that the defeated of cathode circuit simulated by described fluorescent tube
Go out end.
Safety protective circuit of the present invention, wherein, described first resistor and described second resistance span are 1
ω-1kω；
Described first electric capacity and described second electric capacity span are 0.01 μ f-10 μ f；
Described 4th electric capacity and described 5th electric capacity span are 0.01 μ f-50 μ f.
Safety protective circuit of the present invention, wherein, after described fluorescent tube simulation cathode circuit includes being serially connected
It is connected to the first resettable fuse between described first outfan of electronic ballast for fluoresent lamp and described second outfan
With the second resettable fuse；
Junction point between described first resettable fuse and described second resettable fuse is described fluorescent tube
The outfan of simulation cathode circuit；
Described first resettable fuse and described second resettable fuse current parameters span are 0.25-2a.
Safety protective circuit of the present invention, wherein, described safety protective circuit is also included for maintaining the little electricity of system
The isolation circuit resistance via of stream working condition, comprising:
It is connected between the first outfan of described electronic ballast for fluoresent lamp and the second plate of described bidirectional triode thyristor
3rd resistor；
It is connected between the second outfan of described electronic ballast for fluoresent lamp and the second plate of described bidirectional triode thyristor
The 4th resistance；
It is connected in the 5th resistance at described 4th electric capacity two ends in parallel；And, it is connected in described 5th electric capacity two ends in parallel
The 6th resistance；
Wherein, described 3rd resistor, described 4th resistance, described 5th resistance and described 6th resistance value scope are 1m
ω-10mω.
Present invention also offers a kind of electronic type substituted type double end and straight tube led safe fluorescent-lamp protection circuit, wherein, including
It is connected to the first outfan of electronic ballast for fluoresent lamp and the fluorescent tube simulation cathode circuit of the second outfan；Wherein, institute
State fluorescent tube to simulate the outfan of cathode circuit and be connected in series by least two and model identical bidirectional triode thyristor forms
Bidirectional triode thyristor group connect, be located at the first anode of bidirectional triode thyristor foremost in described bidirectional triode thyristor group glimmering with described
Light lamp tube simulate cathode circuit outfan connect, in described bidirectional triode thyristor group be located at rearmost end bidirectional triode thyristor second
Anode passes through the input of the 4th electric capacity and the 5th capacitance connection rectifier filter circuit to double end and straight tube led daylight lamp；
In described bidirectional triode thyristor group, the control pole of each bidirectional triode thyristor is respectively connected with the high frequency state more than 10khz
The high frequency triggers circuit of lower triggering and conducting；Wherein, the control pole of the bidirectional triode thyristor positioned at rear end passes through described high frequency triggering electricity
Road is electrically connected with the control pole of the bidirectional triode thyristor of adjacent headend, passes through described positioned at the control pole of bidirectional triode thyristor foremost
The outfan that high frequency triggers circuit simulates cathode circuit with described fluorescent tube electrically connects；
Or, in described bidirectional triode thyristor group, the control pole of each bidirectional triode thyristor is and simulates the moon with described fluorescent tube
There is the open-circuit condition of distribution capacity between the outfan of polar circuit；
The circuit setting of the 3rd outfan of described electronic ballast for fluoresent lamp and the 4th outfan and described first output
The circuit of end and described second outfan arranges symmetrical.
Present invention also offers a kind of electronic type substituted type double end and straight tube led daylight lamp, driven by electronic ballast for fluoresent lamp
Dynamic, including the rectifier filter circuit being connected with LED lamp group；Wherein, the outfan of described electronic ballast for fluoresent lamp and institute
State the safety protective circuit connecting between rectifier filter circuit just like described in aforementioned any one.
Electronic type substituted type double end and straight tube led daylight lamp of the present invention, wherein, described rectifier filter circuit bag
Include the first diode, the second diode, the 3rd diode and the 4th diode and electric capacity；
Wherein, described first diode and described second diode pass through the 7th resistance or the series connection of the 3rd resettable fuse
Connect；
Described 3rd diode and described 4th diode pass through July 1st resistance or the series connection of the 3rd 1 resettable fuse
Connect；
The negative pole of described first diode connects the negative pole of described 3rd diode, and the positive pole of described second diode connects
The positive pole of described 4th diode；
Positioned at rearmost end bidirectional triode thyristor second plate by described 4th capacitance connection to described first diode
At the junction point of described 7th resistance；
Positioned at rearmost end bidirectional triode thyristor second plate simultaneously by described 5th capacitance connection to the described 2nd 2
At the junction point of pole pipe and described 7th resistance；
Described capacitance connection is between the negative pole and the positive pole of described 4th diode of described 3rd diode；
Described electric capacity two ends are connected in parallel to varistor.
Electronic type substituted type double end and straight tube led daylight lamp of the present invention, wherein, described rectifier filter circuit with
The form of the first module is arranged in two lamp holders of electronic type substituted type double end and straight tube led daylight lamp；
Described safety protective circuit is arranged at described electronic type substituted type double end and straight tube led daylight in the form of the second module
In two lamp holders of lamp, and two lamp holder inner structures are symmetrical；
Electrically connected by screw thread copper post between described first module wherein in the lamp holder of one end and described second module, described
Screw thread copper post is connected to the two ends of described 7th resistance, or described screw thread copper post is connected to described 3rd resettable fuse
Two ends.
The beneficial effects of the present invention is: by the fluorescence lamp electronic in electronic type substituted type double end and straight tube led daylight lamp
Bidirectional triode thyristor is set between the outfan of ballast and rectifier filter circuit, and the control pole in bidirectional triode thyristor connects
The high frequency triggers circuit of triggering and conducting under the high frequency state more than 10khz, or, the control pole of bidirectional triode thyristor and fluorescent lamp
Pipe die is intended between the outfan of cathode circuit as there is the open-circuit condition of distribution capacity so that when low frequency (power frequency 50/60hz),
Signal cannot trigger bidirectional triode thyristor, and when being in high frequency (more than 10k hz) state, high frequency triggers circuit turns on, and at once triggers
Bidirectional triode thyristor, thus connecting electronic ballast for fluoresent lamp high frequency output electric current and LED lamp group normal work passage, plays safety
The effect of protection.
Brief description
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is electronic type substituted type double end and straight tube led safe fluorescent-lamp protection circuit and the phase of present pre-ferred embodiments
Close circuit theory diagrams one；
Fig. 2 is electronic type substituted type double end and straight tube led safe fluorescent-lamp protection circuit and the phase of present pre-ferred embodiments
Close circuit theory diagrams two；
Fig. 3 is the high frequency triggers circuit schematic diagram one of present pre-ferred embodiments；
Fig. 4 is the high frequency triggers circuit schematic diagram two of present pre-ferred embodiments；
Fig. 5 is the electronic type substituted type double end and straight tube of the employing resettable fuse substitutional resistance of present pre-ferred embodiments
Led safe fluorescent-lamp protection circuit and interlock circuit；
Fig. 6 is electronic type substituted type double end and straight tube led safe fluorescent-lamp protection circuit and the phase of another embodiment of the present invention
Close circuit theory diagrams；
Fig. 7 is that the electronic type substituted type double end and straight tube led lamp head of fluorescent lamp internal structure of present pre-ferred embodiments is illustrated
Figure.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, and
It is not used in the restriction present invention.
Figures 1 and 2 show that the electronic type substituted type double end and straight tube led safe fluorescent-lamp protection of present pre-ferred embodiments
Circuit, for convenience of description, wherein illustrate only the part related to the embodiment of the present invention, details are as follows:
Electronic type substituted type double end and straight tube led safe fluorescent-lamp protection circuit includes being connected to electronic ballast for fluoresent lamp
The fluorescent tube simulation cathode circuit of 100 the first outfan 1 and the second outfan 2；Wherein, fluorescent tube simulation cathode circuit
Outfan be connected with the first anode of a bidirectional triode thyristor scr, the second plate of bidirectional triode thyristor scr passes through the 4th electric capacity c4
Connect the input of the rectifier filter circuit 300 to double end and straight tube led daylight lamp with the 5th electric capacity c5；Bidirectional triode thyristor
It is provided between the outfan of the control pole of scr and fluorescent tube simulation cathode circuit and touch under the high frequency state more than 10khz
Send out the high frequency triggers circuit 201 of conducting；Or, the control pole of bidirectional triode thyristor simulates the outfan of cathode circuit with fluorescent tube
Between be to there is the open-circuit condition of distribution capacity；3rd outfan 3 of electronic ballast for fluoresent lamp 100 and the 4th outfan 4
Circuit arranges symmetrical with the circuit setting of the first outfan 1 and the second outfan 2.
Above-mentioned protection circuit operation principle is: when low frequency (power frequency 50/60hz), signal cannot trigger bidirectional triode thyristor
Scr, when being in high frequency (more than 10k hz) state so that being connected to the high frequency triggers circuit of bidirectional triode thyristor scr control pole
201 conductings, conducting electric current about 0.1-50ma, triggers bidirectional triode thyristor scr, electric current simulates cathode circuit by fluorescent tube at once
Be incorporated into the first anode of bidirectional triode thyristor scr, more respectively through the 4th electric capacity c4 and the 5th electric capacity c5 to double end and straight tube led daylight
The rectifier filter circuit 300 of lamp carries out rectifying and wave-filtering, then lights LED lamp group 400, thus connecting electronic ballast for fluoresent lamp
100 high frequency output electric currents and LED lamp group 400 normal work passage, play the effect of safeguard protection.
In above-described embodiment, different from current trigger mode when generally using, cleverly make use of bidirectional triode thyristor scr
Frequency trigger characteristic, carrying out safety standard test or during user installation led daylight lamp, safety protective circuit energy
Both-end LED lamp pipe two ends insulation resistance is made to be more than 2m ω, when applying ac1500v, 50/60hz voltage in lamp tube ends, will not
Flicker and punch-through occur；When one end adds ac500v, 50/60hz power supply wherein simultaneously, the other end accesses iec
The pick-up current of the somatometry network that 60598-1 annex g specifies is less than 0.7ma.
In above-described embodiment, as shown in Fig. 2 the control pole of bidirectional triode thyristor scr simulates cathode circuit with fluorescent tube
It is the open-circuit condition that there is distribution capacity between outfan, specifically refers to: the control pole open circuit of bidirectional triode thyristor scr does not connect
Connect any element, but other each components and parts impacts due to circuit, simulate the output of cathode circuit in this control pole with fluorescent tube
Between end there is circuit distribution capacity in essence.This distribution capacity isolates low-frequency current so that signal cannot trigger under low frequency state
Bidirectional triode thyristor scr, when being in high frequency (more than 10k hz) state, high frequency electric at once triggers two-way through this distribution capacity
Controllable silicon scr, thus connecting electronic ballast for fluoresent lamp 100 high frequency output electric current and LED lamp group 400 normal work passage, rises
Effect to safeguard protection.
In above-described embodiment, it is 1-5a and pressure two-way controlled more than 1kv that bidirectional triode thyristor scr preferably employs value
Silicon.Wherein, bidirectional triode thyristor scr is considered as being made up of a pnp pipe and a npn pipe, therefore, using same structure
The multiple tube of identical function of having of audion conversion composition also should be in the protection domain of above-described embodiment.
In a further embodiment, as shown in figure 1, above-mentioned fluorescent tube simulation cathode circuit connects after including being serially connected
It is connected on first resistor r1 between the first outfan 1 of electronic ballast for fluoresent lamp 100 and the second outfan 2 and second resistance
R2, first resistor r1 two ends are connected in parallel to the first electric capacity c1, and second resistance r2 two ends are connected in parallel to the second electric capacity c2；Its
In, the junction point between first resistor r1 and second resistance r2 simulates the outfan of cathode circuit for fluorescent tube.
Preferably, above-mentioned first resistor r1 and second resistance r2 are the resistance of same size, preferably span be 1 ω-
1kω；The preferred span of the first electric capacity c1 and the second electric capacity c2 is 0.01 μ f-10 μ f；4th electric capacity c4 and the 5th electric capacity c5
Preferred span be 0.01 μ f-50 μ f.
In a further embodiment, as shown in figure 5, above-mentioned fluorescent tube simulation cathode circuit connects after including being serially connected
It is connected on the first resettable fuse p1 between the first outfan 1 of electronic ballast for fluoresent lamp 100 and the second outfan 2 and
Two resettable fuse p2；Junction point between first resettable fuse p1 and the second resettable fuse p2 is fluorescent tube
The outfan of simulation cathode circuit；First resettable fuse p1 and the second resettable fuse p2 current parameters span are equal
For 0.25-2a.That is, first in preceding embodiment is substituted using the first resettable fuse p1 and the second resettable fuse p2
Resistance r1 and second resistance r2 are it is not necessary to connect the first electric capacity c1 and the second electric capacity c2.
Wherein, resettable fuse by polymeric matrix and makes its conductive carbon black particle form, due to this material
There is certain conductive capability, thus have electric current thereon and pass through.When there being overcurrent to pass through critesistor, the heat of generation will
It is made to expand, thus carbon black particle will separate, its resistance will rise.This will promote critesistor to produce heat faster, expand
Obtain bigger, so that resistance is raised further.When temperature reaches 125 DEG C, resistance variations are notable, so that electric current is obviously reduced.This
When flow through the small current of critesistor and be enough to keep it in this temperature and be in high-impedance state.After failture evacuation, temperature-sensitive
Resistance is contracted to original shape and is again tied carbon black particle, so that macromolecule ptc critesistor cools down simultaneously quickly
It is returned to original low resistance state, so can circulate work again.
In a further embodiment, as shown in figure 1, above-mentioned high frequency triggers circuit 201 includes concrete 3rd electric capacity c3, the
Three electric capacity c3 one end are connected to the outfan that cathode circuit simulated by fluorescent tube, and the other end connects the control pole of bidirectional triode thyristor,
And the 3rd electric capacity c3 capacitance preferred span be 1p-10 μ f.When low frequency (power frequency 50/60hz), the 3rd electric capacity c3 every
From low-frequency current, signal cannot trigger bidirectional triode thyristor scr, when being in high frequency (more than 10k hz) state, high frequency electric warp
Cross the 3rd electric capacity c3 and at once trigger bidirectional triode thyristor scr, thus connect electronic ballast for fluoresent lamp 100 high frequency output electric current with
LED lamp group 400 normal work passage, plays the effect of safeguard protection.
In a further embodiment, as shown in figure 3, above-mentioned high frequency triggers circuit 201 is by the 6th electric capacity being serially connected
C6 and the 7th electric capacity c7 composition, the preferred span of the capacitance of the 6th electric capacity c6 and the 7th electric capacity c7 is 1p-10 μ f.With
Sample, when low frequency (power frequency 50/60hz), the series circuit isolation low-frequency current of the 6th electric capacity c6 and the 7th electric capacity c7 composition, letter
Number cannot trigger bidirectional triode thyristor scr, when being in high frequency (more than 10k hz) state, high frequency electric through the 6th electric capacity c6 and
7th electric capacity c7 triggers bidirectional triode thyristor scr at once, thus connecting electronic ballast for fluoresent lamp 100 high frequency output electric current and led
Lamp group 400 normal work passage, plays the effect of safeguard protection.
In a further embodiment, as shown in figure 4, above-mentioned high frequency triggers circuit by the 8th electric capacity c8 being connected in series and
9th resistance r9 composition, the preferred span of capacitance of the 8th electric capacity c8 is 1p-10 μ f, the preferred value model of the 9th resistance r9
Enclose for 1 ω -10 ω.Equally, when low frequency (power frequency 50/60hz), the series circuit of the 8th electric capacity c8 and the 9th resistance r9 composition
Isolation low-frequency current, signal cannot trigger bidirectional triode thyristor scr, when being in high frequency (more than 10k hz) state, high frequency electric
At once trigger bidirectional triode thyristor scr through the 8th electric capacity c8 and the 9th resistance r9 composition, thus connecting electronic ballast for fluoresent lamp
High frequency output electric current and LED lamp group normal work passage, play the effect of safeguard protection.
It is appreciated that the high frequency triggers circuit 201 in the various embodiments described above can also have other variations, only need to meet
Isolate electric current under low frequency state, in high frequency triggering and conducting, numerous to list herein.
In a further embodiment, above-mentioned electronic type substituted type double end and straight tube led safe fluorescent-lamp protection circuit 200 is gone back
Including the isolation circuit resistance via for maintaining system small current working condition, comprising: be connected to electronic ballast for fluoresent lamp
3rd resistor r3 between 100 the first outfan 1 and the second plate of bidirectional triode thyristor scr；It is connected to fluorescence lamp electronic town
The 4th resistance r4 between second outfan 2 of stream device 100 and the second plate of bidirectional triode thyristor scr；It is connected in the 4th in parallel
The 5th resistance r5 at electric capacity c4 two ends；And, it is connected in the 6th resistance r6 at the 5th electric capacity c5 two ends in parallel；Wherein, the 3rd electricity
Resistance r3, the 4th resistance r4, the preferred span of the 5th resistance r5 and the 6th resistance r6 are 1m ω -10m ω.
When under low frequency state, because bidirectional triode thyristor scr is in cut-off state, by 3rd resistor r3 of larger resistance,
The isolation circuit resistance via of the 4th resistance r4, the 5th resistance r5 and the 6th resistance r6 composition can allow system small current stream
Crossing, thus taking into account the different starter characteristic of all types of electric ballasts, playing circuit safety protective effect.
As shown in fig. 6, present invention also offers electronic type substituted type double end and straight tube led safe fluorescent-lamp protection circuit another
One embodiment, including being connected to the first outfan 1 of electronic ballast for fluoresent lamp 100 and the fluorescent lamp pipe die of the second outfan 2
Intend cathode circuit；Wherein, fluorescent tube is simulated the outfan of cathode circuit and is connected in series and model identical by least two
The bidirectional triode thyristor group scr ' connection of bidirectional triode thyristor scr composition, being located at foremost two-way in bidirectional triode thyristor group scr ' can
The outfan that the first anode of control silicon simulates cathode circuit with fluorescent tube is connected, and is located at rearmost end in bidirectional triode thyristor group scr '
The second plate of bidirectional triode thyristor connected to the high frequency of double end and straight tube led daylight lamp by the 4th electric capacity c4 and the 5th electric capacity c5
The input of current rectifying and wave filtering circuit 300；In bidirectional triode thyristor group scr ', the control pole of each bidirectional triode thyristor is respectively connected with big
The high frequency triggers circuit 201 of triggering and conducting under the high frequency state of 10khz；Wherein, positioned at the control of the bidirectional triode thyristor of rear end
Pole is electrically connected with the control pole of the bidirectional triode thyristor of adjacent headend by high frequency triggers circuit 201, can positioned at foremost two-way
The control pole of control silicon is passed through high frequency triggers circuit 201 and is electrically connected with the outfan of fluorescent tube simulation cathode circuit；Or, two-way
In Group of Silicon Controlled Rectifier, the control pole of each bidirectional triode thyristor is to exist and the outfan of fluorescent tube simulation cathode circuit between and divides
The open-circuit condition of cloth electric capacity；The circuit setting and the of the 3rd outfan 3 of electronic ballast for fluoresent lamp 100 and the 4th outfan 4
The circuit setting of one outfan 1 and the second outfan 2 is symmetrical.
Refering to Fig. 6, above-mentioned safety protective circuit operation principle is: when low frequency (power frequency 50/60hz), signal cannot trigger
Bidirectional triode thyristor group scr ', when being in high frequency (more than 10k hz) state so that being connected to bidirectional triode thyristor group scr ' control
The high frequency triggers circuit 201 of pole turns on, conducting electric current about 0.1-50ma, at once trigger bidirectional triode thyristor group scr ', electric current by
The first anode that cathode circuit is incorporated into bidirectional triode thyristor group scr ' simulated by fluorescent tube, more respectively through the 4th electric capacity c4 and the 5th
Electric capacity c5 carries out rectifying and wave-filtering to the rectifier filter circuit 300 of double end and straight tube led daylight lamp, then lights LED lamp group 400,
Thus connecting electronic ballast for fluoresent lamp 100 high frequency output electric current and LED lamp group 400 normal work passage, play safeguard protection
Effect.
Due to employing the bidirectional triode thyristor bidirectional triode thyristor in series of two or more (such as two, three, four)
Scr ' is so that the pressure performance of protection circuit is more preferable for group.Carrying out safety standard test or in user installation led daylight lamp process
In, safety protective circuit can make both-end LED lamp pipe two ends insulation resistance be more than 2m ω, when lamp tube ends apply ac1500v,
During 50/60hz voltage, be not in flicker and punch-through；When one end adds ac500v, 50/60hz power supply wherein simultaneously,
The pick-up current that the other end accesses the somatometry network that iec 60598-1 annex g specifies is less than 0.7ma.
In safety protective circuit shown in Fig. 6, in bidirectional triode thyristor group scr ', single bidirectional triode thyristor scr is 1-5a and resistance to
Pressure is more than 1kv.So that three bidirectional triode thyristors are connected in series as a example, including the first bidirectional triode thyristor positioned at front end, second two-way
Controllable silicon and the 3rd bidirectional triode thyristor being located at rear end, the second plate of the first bidirectional triode thyristor connects the second bidirectional triode thyristor
The first anode, the second plate of the second bidirectional triode thyristor connects the first anode of the 3rd bidirectional triode thyristor；Positioned at rearmost end
The control pole of three bidirectional triode thyristors is connected to the control pole of the second bidirectional triode thyristor by a high frequency triggers circuit 201；Second pair
Connected to the control pole of the first bidirectional triode thyristor to silicon controlled control pole by another high frequency triggers circuit 201；Before being located at
The control pole of first bidirectional triode thyristor at end is connected by another high frequency triggers circuit 201 again simulates cathode circuit to fluorescent tube
Outfan.
In safety protective circuit shown in Fig. 6, high frequency triggers circuit 201 includes the 3rd electric capacity c3, the electricity of the 3rd electric capacity c3
Capacity span is 1p-10 μ f；Or, high frequency triggers circuit 201 is by the 6th electric capacity c6 being serially connected and the 7th electric capacity c7
Composition, the capacitance span of the 6th electric capacity c6 and the 7th electric capacity c7 is 1p-10 μ f；Or, high frequency triggers circuit 201 by
The 8th electric capacity c8 being connected in series and the 9th resistance r9 composition, the capacitance span of the 8th electric capacity c8 is 1p-10 μ f, the 9th
The span of resistance r9 is 1 ω -10 ω.The detailed description of high frequency triggers circuit 201 principle refers to foregoing embodiments,
This repeats no more.
In safety protective circuit shown in Fig. 6, fluorescent tube simulation cathode circuit principle refers to foregoing embodiments, each unit
Device parameters value also refers to foregoing embodiments, will not be described here.
In electronic type substituted type double end and straight tube led safe fluorescent-lamp protection circuit 200 shown in Fig. 6, further, also wrap
Include the isolation circuit resistance via for maintaining system small current working condition, the principles illustrated of isolation circuit resistance via also please
Refering to foregoing embodiments, will not be described here.
Present invention also offers a kind of specific embodiment of electronic type substituted type double end and straight tube led daylight lamp, as Fig. 7 institute
Show, refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, this electronic type substituted type double end and straight tube led daylight lamp is by fluorescent lamp electricity simultaneously
Sub-ballast 100 drives, including the rectifier filter circuit 300 being connected with LED lamp group 400；Wherein, fluorescent lamp electronic ballast
It is connected between the outfan of device 100 and rectifier filter circuit 300 and protect just like the safety described in aforementioned any embodiment
Protection circuit 200.This safety protective circuit 200 electronic ballast for fluoresent lamp outfan and rectifier filter circuit 300 it
Between play the effect of safety switch, and this safety switch is the safety switch to frequency sensitive, in low frequency (power frequency 50/60hz) shape
Disconnect under state, turn under high frequency (more than 10k hz) state.Wherein, safety protective circuit 200 operation principle is referring to aforementioned each reality
Apply example, will not be described here.
In the electronic type substituted type double end and straight tube led daylight lamp of above-described embodiment, touch different from electric current when generally using
Originating party formula, cleverly make use of the frequency trigger characteristic of bidirectional triode thyristor scr, carry out safety standard test or user peace
During dress led daylight lamp, safety protective circuit can make both-end LED lamp pipe two ends insulation resistance be more than 2m ω, when in fluorescent tube two
When end applies ac1500v, 50/60hz voltage, be not in flicker and punch-through；Simultaneously wherein one end add ac500v,
During 50/60hz power supply, the pick-up current that the other end accesses the somatometry network that iec 60598-1 annex g specifies is less than
0.7ma.
Therefore, using the electronic type substituted type double end and straight tube led daylight lamp of the present invention, installation process and normal work are being replaced
When making, electric shock accidentss will not occur and damage fluorescent tube, so that it is guaranteed that the person and property safety.Meanwhile, both-end led daylight lamp can not
Change the fluorescent lighting lamp circuit of primary electron ballast driven and directly substitute fluorescent tube, reach energy-conservation, safe and environment-friendly
Purpose with long-lived operation.
In the electronic type substituted type double end and straight tube led daylight lamp of above-described embodiment, as depicted in figs. 1 and 2, fluorescence lamp electronic
Zero line l of ballast 100 and zero line side n access city alternating current ac (voltage is 220v, and frequency is 50hz or 60hz), fluorescent lamp
Electric main ac is converted to high frequency by its internal ac-dc patent circuit and dc-ac change-over circuit and hands over by electric ballast 100
Export after stream electricity to the safety protective circuit 200 of the present invention, its current frequency range is 20khz-80khz.
In above-described embodiment, as depicted in figs. 1 and 2, rectifier filter circuit 300 include the first diode d1, second
Diode d2, the 3rd diode d3 and the 4th diode d4 and electric capacity co；Wherein, the first diode d1 and the second diode d2
It is connected in series by the 7th resistance r7 (or the 3rd resettable fuse p3, as shown in Figure 5)；3rd diode d3 and the four or two pole
Pipe d4 passes through July 1st resistance r7 ' (or the 3rd 1 resettable fuse p3 ', as shown in Figure 5) and is connected in series；First diode d1
Negative pole connect the negative pole of the 3rd diode d3, the positive pole of the second diode d2 connects the positive pole of the 4th diode d4；Two-way can
The second plate of control silicon scr is connected to the junction point of the first diode d1 and the 7th resistance by the 4th electric capacity c4；Two-way can
The second plate of control silicon scr is connected to the junction point of the second diode d2 and the 7th resistance by the 5th electric capacity c5 simultaneously；Electricity
Hold co to be connected between negative pole and the positive pole of the 4th diode d4 of the 3rd diode d3.
Preferably, above-mentioned LED lamp group 400 two ends are connected in parallel to the varistor of 100v-200v, to prevent user from will by mistake
Fluorescent tube accesses electric inductance type fluorescent lamp tool, it is to avoid starter (jump bubble) disconnects the led lamp beads damage that moment back-emf causes.
Preferably, in above-mentioned electronic type substituted type double end and straight tube led daylight lamp, as shown in fig. 7, refer to Fig. 1 and Tu simultaneously
2, rectifier filter circuit 300 is arranged at the two of electronic type substituted type double end and straight tube led daylight lamp in the form of the first module a
In lamp holder 501；Safety protective circuit 200 is arranged at electronic type substituted type double end and straight tube led daylight lamp in the form of the second module b
Two lamp holders 501 in, two lamp holder inner structures are symmetrical；Pass through spiral shell between the first module a wherein in the lamp holder of one end and the second module b
Stricture of vagina copper post 504 electrically connects, and screw thread copper post 504 is connected to the two ends of the 7th resistance r7, or screw thread copper post 504 is connected to the 3rd certainly
Recover the two ends of electric fuse p3.
In the electronic type substituted type double end and straight tube led daylight lamp of above-described embodiment, as shown in figure 1, LED lamp group 400 is by many
Individual led luminescence unit (l1-ln) is connected in parallel, and the input of multiple led luminescence units (l1-ln) is commonly connected to high frequency
The outfan of current rectifying and wave filtering circuit 300, the outfan of multiple led luminescence units (l1-ln) is commonly connected to filtering high-frequency rectifier
The loop end of circuit 300, each led luminescence unit is formed by connecting by multiple led chip-in series.Wherein, multiple led luminescence units
(l1-ln) quantity span is 2-20；In each led luminescence unit, the quantity span of multiple led chips is
10-50.
Glass tubing 503 overall length of the electronic type substituted type double end and straight tube led daylight lamp of above-described embodiment is preferably 1178mm
Or 1478mm, lamp bar 502 length preferably 1170mm or 1466mm；Lamp holder 501 lengthens 6mm, in order to avoid dark space at naked wire or lamp holder.
It should be appreciated that for those of ordinary skills, can be improved according to the above description or be converted,
And all these modifications and variations all should belong to the protection domain of claims of the present invention.
Claims (10)
1. a kind of electronic type substituted type double end and straight tube led safe fluorescent-lamp protection circuit is it is characterised in that include being connected to fluorescence
The fluorescent tube simulation cathode circuit of first outfan (1) of lamp electronic ballast (100) and the second outfan (2)；Wherein, institute
The outfan stating fluorescent tube simulation cathode circuit is connected with the first anode of a bidirectional triode thyristor (scr), described two-way controlled
The second plate of silicon (scr) passes through the 4th electric capacity (c4) and the 5th electric capacity (c5) connects to the high frequency of double end and straight tube led daylight lamp
The input of current rectifying and wave filtering circuit (300)；
It is provided between the outfan of the control pole of described bidirectional triode thyristor (scr) and described fluorescent tube simulation cathode circuit
High frequency triggers circuit (201) more than triggering and conducting under the high frequency state of 10khz；
Or, the control pole of described bidirectional triode thyristor (scr) and described fluorescent tube are simulated and between the outfan of cathode circuit are
There is the open-circuit condition of distribution capacity；
The circuit setting and described the of the 3rd outfan (3) of described electronic ballast for fluoresent lamp (100) and the 4th outfan (4)
The circuit setting of one outfan (1) and described second outfan (2) is symmetrical.
2. safety protective circuit according to claim 1 is it is characterised in that described high frequency triggers circuit (201) includes the
Three electric capacity (c3), the capacitance span of described 3rd electric capacity (c3) is 1p-10 μ f；
Or, described high frequency triggers circuit (201) is made up of the 6th electric capacity (c6) being serially connected and the 7th electric capacity (c7), described
The capacitance span of the 6th electric capacity (c6) and the 7th electric capacity (c7) is 1p-10 μ f；
Or, described high frequency triggers circuit (201) is made up of the 8th electric capacity (c8) being connected in series and the 9th resistance (r9), and the 8th
The capacitance span of electric capacity (c8) is 1p-10 μ f, and the span of described 9th resistance (r9) is 1 ω -10 ω；
Described bidirectional triode thyristor (scr) be 1-5a and pressure more than 1kv.
3. safety protective circuit according to claim 1 is it is characterised in that described fluorescent tube simulation cathode circuit includes
Be connected to after being serially connected described first outfan (1) of electronic ballast for fluoresent lamp (100) and described second outfan (2) it
Between first resistor (r1) and second resistance (r2), described first resistor (r1) two ends are connected in parallel to the first electric capacity (c1), institute
State second resistance (r2) two ends and be connected in parallel to the second electric capacity (c2)；Wherein,
Junction point between described first resistor (r1) and described second resistance (r2) is that cathode circuit simulated by described fluorescent tube
Outfan.
4. safety protective circuit according to claim 3 it is characterised in that described first resistor (r1) and described second electricity
Resistance (r2) span is 1 ω -1k ω；
Described first electric capacity (c1) and described second electric capacity (c2) span are 0.01 μ f-10 μ f；
Described 4th electric capacity (c4) and described 5th electric capacity (c5) span are 0.01 μ f-50 μ f.
5. safety protective circuit according to claim 1 is it is characterised in that described fluorescent tube simulation cathode circuit includes
It is connected to after being serially connected between described first outfan (1) of electronic ballast for fluoresent lamp and described second outfan (2)
First resettable fuse (p1) and the second resettable fuse (p2)；
Junction point between described first resettable fuse (p1) and described second resettable fuse (p2) is described fluorescence
The outfan of cathode circuit simulated by fluorescent tube；
Described first resettable fuse (p1) and described second resettable fuse (p2) current parameters span are
0.25-2a.
6. safety protective circuit according to claim 1 is it is characterised in that described safety protective circuit (200) also includes
For maintaining the isolation circuit resistance via of system small current working condition, comprising:
It is connected to first outfan (1) of described electronic ballast for fluoresent lamp (100) and the second of described bidirectional triode thyristor (scr)
3rd resistor (r3) between anode；
It is connected to second outfan (2) of described electronic ballast for fluoresent lamp (100) and the second of described bidirectional triode thyristor (scr)
The 4th resistance (r4) between anode；
It is connected in the 5th resistance (r5) at described 4th electric capacity (c4) two ends in parallel；And, it is connected in described 5th electric capacity in parallel
(c5) the 6th resistance (r6) at two ends；
Wherein, described 3rd resistor (r3), described 4th resistance (r4), described 5th resistance (r5) and described 6th resistance (r6)
Span is 1m ω -10m ω.
7. a kind of electronic type substituted type double end and straight tube led safe fluorescent-lamp protection circuit is it is characterised in that include being connected to fluorescence
The fluorescent tube simulation cathode circuit of first outfan (1) of lamp electronic ballast (100) and the second outfan (2)；Wherein, institute
State fluorescent tube to simulate the outfan of cathode circuit and be connected in series and model identical bidirectional triode thyristor (scr) by least two
Bidirectional triode thyristor group (scr ') of composition connects, positioned at bidirectional triode thyristor foremost in described bidirectional triode thyristor group (scr ')
The outfan that the first anode simulates cathode circuit with described fluorescent tube is connected, and is located in described bidirectional triode thyristor group (scr ')
The second plate of the bidirectional triode thyristor of rear end passes through the 4th electric capacity (c4) and the 5th electric capacity (c5) connects to double end and straight tube led daylight
The input of the rectifier filter circuit (300) of lamp；
In described bidirectional triode thyristor group (scr '), the control pole of each bidirectional triode thyristor is respectively connected with the high frequency shape more than 10khz
The high frequency triggers circuit (201) of triggering and conducting under state；Wherein, the control pole of the bidirectional triode thyristor positioned at rear end passes through described high frequency
Triggers circuit (201) is electrically connected with the control pole of the bidirectional triode thyristor of adjacent headend, positioned at the control of bidirectional triode thyristor foremost
Pole processed is electrically connected by the outfan that described high frequency triggers circuit (201) simulates cathode circuit with described fluorescent tube；
Or, in described bidirectional triode thyristor group (scr '), the control pole of each bidirectional triode thyristor is and the simulation of described fluorescent tube
There is the open-circuit condition of distribution capacity between the outfan of cathode circuit；
The circuit setting and described the of the 3rd outfan (3) of described electronic ballast for fluoresent lamp (100) and the 4th outfan (4)
The circuit setting of one outfan (1) and described second outfan (2) is symmetrical.
8. a kind of electronic type substituted type double end and straight tube led daylight lamp, by electronic ballast for fluoresent lamp (100) drive, including with led
The rectifier filter circuit (300) that lamp group (400) connects；It is characterized in that, described electronic ballast for fluoresent lamp (100) defeated
Go out end to be connected just like the safeguard protection any one of claim 1-7 between described rectifier filter circuit (300)
Circuit (200).
9. electronic type substituted type double end and straight tube led daylight lamp according to claim 8 is it is characterised in that described high frequency is whole
Stream filter circuit (300) includes the first diode (d1), the second diode (d2), the 3rd diode (d3) and the 4th diode
And electric capacity (co) (d4)；
Wherein, described first diode (d1) and described second diode (d2) pass through the 7th resistance (r7) or the 3rd self- recoverage guarantor
Dangerous silk (p3) is connected in series；
Described 3rd diode (d3) and described 4th diode (d4) pass through July 1st resistance (r7 ') or the 3rd 1 self- recoverage guarantor
Dangerous silk (p3 ') is connected in series；
The negative pole of described first diode (d1) connects the negative pole of described 3rd diode (d3), described second diode (d2)
Positive pole connects the positive pole of described 4th diode (d4)；
Second plate positioned at the bidirectional triode thyristor (scr) of rearmost end is connected to the described 1st by described 4th electric capacity (c4)
At the junction point of pole pipe (d1) and described 7th resistance (r7)；
Second plate positioned at the bidirectional triode thyristor (scr) of rearmost end is connected to described by described 5th electric capacity (c5) simultaneously
At the junction point of two diodes (d2) and described 7th resistance (r7)；
Described electric capacity (co) is connected between negative pole and the positive pole of described 4th diode (d4) of described 3rd diode (d3)；
Described electric capacity (co) two ends are connected in parallel to varistor (r8).
10. electronic type substituted type double end and straight tube led daylight lamp according to claim 9 is it is characterised in that described high frequency is whole
Stream filter circuit (300) is arranged at two lamp holders of electronic type substituted type double end and straight tube led daylight lamp in the form of the first module (a)
(501) in；
Described safety protective circuit (200) is arranged at described electronic type substituted type double end and straight tube led in the form of the second module (b)
In two lamp holders (501) of daylight lamp, and two lamp holders (501) inner structure is symmetrical；
Pass through screw thread copper post between described first module (a) wherein in one end lamp holder (501) and described second module (b)
(504) electrically connect, described screw thread copper post (504) is connected to the two ends of described 7th resistance (r7), or described screw thread copper post
(504) it is connected to the two ends of described 3rd resettable fuse (p3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510023550.XA CN104540304B (en) | 2015-01-16 | 2015-01-16 | Electronic replacement-type double-end straight-tube LED fluorescent lamp and safety protection circuit thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510023550.XA CN104540304B (en) | 2015-01-16 | 2015-01-16 | Electronic replacement-type double-end straight-tube LED fluorescent lamp and safety protection circuit thereof |
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| CN104540304A CN104540304A (en) | 2015-04-22 |
| CN104540304B true CN104540304B (en) | 2017-01-18 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016112538A1 (en) * | 2015-01-16 | 2016-07-21 | 邓树兴 | Electronic substitution-type double-end straight-tube led lamp and safety protection circuit thereof |
| CN106304522A (en) * | 2015-05-22 | 2017-01-04 | 讯强电子(惠州)有限公司 | General-purpose type light-emitting diode lamp tube, power-supply system and LED driving circuit |
| CN106413213A (en) * | 2015-08-03 | 2017-02-15 | 常州明石晶电科技有限公司 | Starting system used for LED lighting device and the LED lighting device |
| CN106102290B (en) * | 2016-08-02 | 2019-04-23 | 欧普照明股份有限公司 | A kind of device and illuminator based on electronic ballast control electronic control circuit |
| CN110140426B (en) * | 2017-01-03 | 2022-04-15 | 昕诺飞控股有限公司 | Modified light-emitting diode (LED) lamp tube for replacing fluorescent lamp tube |
| WO2019019080A1 (en) * | 2017-07-27 | 2019-01-31 | 邓树兴 | A universal led lamp bulb and module |
| CN107529713B (en) * | 2017-07-27 | 2024-02-02 | 邓树兴 | Universal LED lamp tube and module thereof |
| CN107734779A (en) * | 2017-11-13 | 2018-02-23 | 广州格比瑞科技有限公司 | Two-terminal electronic compatible type LED lamp tube drives module |
| US10674586B1 (en) | 2019-10-22 | 2020-06-02 | Jiangxi Jingke Electronics Co., Ltd. | Universal LED tube and module thereof |
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| CN201781665U (en) * | 2010-08-17 | 2011-03-30 | 广德利德照明有限公司 | LED lamp tube protective circuit structure |
| KR101040833B1 (en) * | 2011-04-05 | 2011-06-14 | 김성윤 | Ballast circuit for led lamp |
| CN103841697B (en) * | 2012-11-23 | 2017-04-05 | 罗正华 | The IC chip and its control circuit of electric ballast direct drive LED |
| CN103929858B (en) * | 2014-04-15 | 2015-11-25 | 刘坚 | The LED fluorescent lamp tube utilizing electronic ballast for fluoresent lamp to drive and lighting |
| CN204350393U (en) * | 2015-01-16 | 2015-05-20 | 邓树兴 | Electronic type substituted type double end and straight tube LED daylight lamp and safety protective circuit thereof |
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Effective date of registration: 20170407 Address after: 516200 Huiyang Economic Development Zone, the village of Wai Wai Wai Patentee after: Huizhou yameiya Electronic Technology Co.,Ltd. Address before: 518000 Luohu District, Shenzhen, Liantang, Hong Kong, lotus road, No. 715, building 6, building, building 59 Patentee before: Deng Shuxing Patentee before: Liu Jian |
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Granted publication date: 20170118 Termination date: 20220116 |