CN207500856U - Led daylight lamp - Google Patents

Abstract

The utility model discloses a kind of LED daylight lamp, including：Fluorescent tube (1), end have the pin (A1, A2, B1, B2) for inputting external drive current signal；LED module (530) is used to receive the external drive current signal to shine；The LED module (530) is coupled with current limiting capacitance (541)；The current limiting capacitance (541) flows into the electric current of the LED module (530) for limiting；The compatible circuit (560) in parallel with the current limiting capacitance (541)；The current limiting capacitance (541) can be accessed circuit, and be connected when the external drive current signal is less than predetermined value by the compatible circuit (560) when the external drive current signal is more than predetermined value.The all types of electrical ballast of the friendly compatibility of LED daylight lamp lamp energy；Compatibility emergency type ballast that simultaneously can also be friendly；LED daylight lamp can also normally be started in electrical network low voltage.

Description

LED daylight lamp

Technical field

The utility model is related to lighting area more particularly to a kind of LED daylight lamps.

Background technology

LED lighting technology it 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 daylight lamp lamp need not filling mercury.Therefore, it is various by seem conventional fluorescent bulbs and In the lighting system of the household dominated of illumination option such as fluorescent tube or workplace, LED daylight lamp lamp it is hardly surprising that gradually into The illumination option expected for people's height.The advantages of LED daylight lamp lamp the durability comprising promotion and service life and compared with low power consuming. Thus it is contemplated that after all factors, LED daylight lamp lamp will be the illumination option of escapable cost.

Due to traditional existing longer time of incandescent lamp and fluorescent lamp, matching connection has ballast.With people Energy-efficient consciousness improves, and LED illumination instead of traditional incandescent lamp and fluorescent lamp, reach common understanding by shape from now on.Using rectification at present There are many occasion of device, and LED daylight lamp lamp how friendly compatibility existing variety classes need to be considered when being substituted for LED daylight lamp lamp Whole ballast become more urgent.

Commercially available common electric ballast mainly can be divided into instantaneous starting type (Instant Start) electric ballast, pre- Two kinds of thermal starting type (Program Start) electric ballast.Electric ballast has resonance circuit, driving design and daylight The load characteristic matching of lamp, i.e. electric ballast are capacitive component before lighting in fluorescent lamp, and after lighting are resistive group Part provides corresponding startup program, and fluorescent lamp is allow correctly to light.And LED be non-linear component, the spy with fluorescent lamp Property is entirely different.Therefore, LED daylight lamp lantern festival influences the resonance design of electric ballast, and causes compatibility issue.

Then when certain IS types electric ballasts match, existing in low-voltage when 120V (network voltage be less than) cannot be into The phenomenon that work(starts.

So in addition to electric ballast, also Inductive ballast, the driving that Inductive ballast is exported are being used in certain areas The level and frequency of signal are different from the drive signal that electric ballast is exported；Therefore, the LED days of electric ballast are compatible with Light lamp lamp possibly can not be compatible with Inductive ballast, and cause compatibility issue.

Ballast removes above-mentioned electric ballast, outside Inductive ballast, in certain occasions due to the requirement of fire-fighting, is equipped with The emergency lighting of emergency ballast；The electric current of output high frequency (typically not greater than 20KHz) pulsed when emergency ballast works, Electric current is different from the electric current of the output of electrical ballast, and (size of current exported during usual emergency ballast work is no more than 50mA, and the electric current of electric ballast work output is in 200mA or so), since the difference of drive signal is compatible to electronic ballast The LED daylight lamp lamp of device possibly can not be compatible with emergency ballast, and be unfavorable for LED daylight lamp and popularize on a large scale.

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

Utility model content

Many embodiments of the abstract description herein about " the utility model ".However the vocabulary " the utility model " is only For describing some embodiments disclosed in this description (in spite of in claim) rather than being possible to Embodiment complete description.The some embodiments for being described below as each features or aspect of " the utility model " can not Merge to form a LED daylight lamp lamp or a portion with mode.

The utility model provides a kind of new LED daylight lamp lamp and its various aspects (with feature), to solve above-mentioned ask Topic.

A kind of LED daylight lamp, including：

Fluorescent tube 1, end have pin A1, A2, B1, B2 for inputting external drive current signal；

LED module 530 is used to receive the external drive current signal to shine；The LED module 530 is coupled with Current limiting capacitance 541；The current limiting capacitance 541 is used to limit the electric current for flowing into the LED module 530；

The compatible circuit 560 in parallel with the current limiting capacitance 541；The compatible circuit 560 can be in external drive electricity The current limiting capacitance 541 is accessed into circuit when stream signal is more than predetermined value, and is less than in the external drive current signal and makes a reservation for It is connected during value.

Preferably, the compatible circuit 560 includes sampling unit 5564 and switch unit 5563；The sampling unit 5564 form sampled voltage according to the external drive current signal；The switch unit 5563 is more than pre- in the sampled voltage If disconnecting the compatible circuit 560 during value so that the current limiting capacitance 541 is accessed circuit, and it is less than in the sampled voltage and presets The compatible circuit 560 is connected during value.

Preferably, the switch unit 5563 includes a MOS switch 4562；The MOS switch 4562 is in the external drive Streaming current signal is repeatedly connected and ends when being more than predetermined value, and is led when the external drive current signal is less than predetermined value It is logical.

Preferably, the sampling unit 5564 includes sampling resistor 4564.

Preferably, the compatible circuit 560 further includes control unit 5562；Described control unit 5562 is used for according to Sampled voltage controls the cut-off and conducting of the switch unit 5563.

Preferably, described control unit 5562 includes power branch, IC chip 4561；First resistor 4563；First capacitance 4565；Triode 4567；The both ends of the current limiting capacitance 541 are electrically connected in the both ends of the power branch；The power supply Branch is used to provide the driving power of the IC chip 4561；

The IC chip 4561 is electrically connected between the switch unit 5563 and the power branch, and is electrically connected The collector of the triode 4567, the emitter of the triode 4567 connect one end of the power branch, the triode 4567 base stage and the transmitting interpolar of the triode 4567 are electrically connected with first capacitance 4565, the triode 4567 Base stage be electrically connected one end of the first resistor 4563, the other end of the first resistor 4563 and the triode 4567 Transmitting interpolar be electrically connected the sampling unit 5564.

Preferably, the compatible circuit 560 further includes rectification unit 5561 and control unit 5562；The rectification unit For providing electric energy to the external drive current signal rectification and to described control unit 5562；Described control unit 5562 is used In cut-off and conducting that the switch unit 5563 is controlled according to the sampled voltage.

Preferably, the rectification unit 5561 include the first diode 515, the second diode 516, third diode 517, 4th diode 518；The cathode of first diode 515 is electrically connected the cathode of second diode 517；Described first The anode of diode 515 is electrically connected the cathode of second diode 516, and the anode of second diode 516 electrically connects The anode of the 4th diode 518 is connect, the cathode of the 4th diode 518 is electrically connected the third diode 517 Anode；The tie point and the third diode 517 of first diode 515 and second diode 516 and described the The both ends of the current limiting capacitance 541 are electrically connected in the tie point of four diodes 518.

Preferably, described control unit 5562 includes power branch, IC chip 4561；First resistor 4563；First capacitance 4565；Second resistance 4566；Triode 4567；The power branch connects the third diode 517 and the one or two pole The cathode of pipe 515；The power branch is used to provide the driving power of the IC chip 4561；

The IC chip 4561 is electrically connected between the switch unit 5563 and the power branch, and is electrically connected One end of the second resistance 4566, the other end of the second resistance 4566 are electrically connected the current collection of the triode 4567 Pole, the emitter of the triode 4567 connect one end of the power branch, the base stage of the triode 4567 and three pole The transmitting interpolar of pipe 4567 is electrically connected with first capacitance 4565, and the base stage of the triode 4567 is electrically connected described the One end of one resistance 4563, the other end of the first resistor 4563 and the transmitting interpolar of the triode 4567 are electrically connected institute State sampling unit 5564.

Preferably, the power branch is sequentially gone here and there including the 5th diode 519,3rd resistor 4568, the second capacitance 4569 The branch of connection；Wherein, the anode of the 5th diode 519 is electrically connected the third diode 517 and the one or two pole The cathode of pipe 515；

The switch unit 5563 includes a MOS switch 4562, and the sampling unit 5564 includes sampling resistor 4564；Institute The grid for stating MOS switch 4562 is electrically connected the IC chip 4561, and the drain electrode of the MOS switch 4562 is electrically connected described the The anode of five diodes 519, the source S pole of the MOS switch 4562 are electrically connected to one end of the sampling resistor 4564, institute State the other end ground connection of sampling resistor 4564.

Preferably, the current limiting capacitance 541 is connected with ballast compatible circuit 1510；The ballast compatible circuit 1510 is used for Start the LED module 530 when the external drive current signal comes from ballast.

Preferably, the ballast compatible circuit 1510 includes being connected between the both ends of the ballast compatible circuit 1510 First discharge tube 561；The both ends of first discharge tube 561 are respectively used to receive described in external drive current signal and connection One end of current limiting capacitance 541.

Preferably, the ballast compatible circuit 1510, which further includes, is connected between the both ends of the ballast compatible circuit 1510 Bidirectional triode thyristor TR；The first end of first discharge tube 561 connects the first end of the bidirectional triode thyristor TR；Described first The second end of discharge tube 561 connects the triggering end of the bidirectional triode thyristor TR.

Preferably, the ballast compatible circuit 1510 further includes the second discharge tube 562, third capacitance 563；Described second puts Fulgurite 562 is series between the second end of first discharge tube 561 and the triggering end of the bidirectional triode thyristor TR；The third The first end of capacitance 563 connects the second end of first discharge tube 561, described in the second end connection of the third capacitance 563 The second end of bidirectional triode thyristor TR.

Preferably, the ballast compatible circuit 1510 further includes the 4th resistance 565；4th resistance 565 is electrically connected Between the second end of first discharge tube 561 and the first end of second discharge tube 562.

Preferably, the ballast compatible circuit 1510 further includes bilateral diode 564, third capacitance 563；Described two-way two Pole pipe 564 is series between the second end of first discharge tube 561 and the triggering end of the bidirectional triode thyristor TR；The third The first end of capacitance 563 connects the second end of first discharge tube 561, described in the second end connection of the third capacitance 563 The second end of bidirectional triode thyristor TR.

Preferably, the ballast compatible circuit 1510 further includes the 4th resistance 565；4th resistance 565 is electrically connected Between the second end of first discharge tube 561 and the first end of the bilateral diode 564.

The scheme for the LED daylight lamp lamp that the application proposes, all types of electrical ballast of the friendly compatibility of energy；Simultaneously also The friendly compatibility emergency type ballast of energy；LED daylight lamp can also normally be started in electrical network low voltage.

Description of the drawings

It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those skilled in the art, without having to pay creative labor, It can also be obtained according to these attached drawings other attached drawings.

Fig. 1 is the utility model embodiment LED daylight lamp stereogram；

Fig. 2A-Fig. 2 B are the utility model embodiment LED daylight lamp three-dimensional exploded view；

Fig. 3 A- Fig. 3 C are the circuit diagram of the LED daylight lamp of the embodiment of the utility model；

Fig. 4 A- Fig. 4 F are the circuit diagram of compatible circuit in Fig. 3；

Specific embodiment

In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality The attached drawing in example is applied, the technical solution in the embodiment of the present application is clearly and completely described, it is clear that described implementation Example is merely a part but not all of the embodiments of the present application.Based on the embodiment in the application, this field is common It is new should all to belong to this practicality for technical staff's all other embodiments obtained under the premise of creative work is not made The range of type protection.

It should be noted that when element is referred to as " being set to " another element, it can be directly on another element Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ", For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.

Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to the technology of the utility model The normally understood meaning of technical staff in domain is identical.It is only in the term used in the description of the utility model herein The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein "and/or" packet Include the arbitrary and all combination of one or more relevant Listed Items.

The utility model is on the basis of glass lamp, it is proposed that a kind of new LED daylight lamp lamp, to solve background technology In the problem of mentioning and the above problem.It is understandable for the above-mentioned purpose of the utility model, feature and advantage is enable to become apparent, Specific embodiment of the utility model is described in detail below in conjunction with the accompanying drawings.The narration of following various embodiments of the utility model Merely to illustrate and be illustration, be not meant as the whole embodiments of the utility model or be limited to the utility model specific Embodiment.

Please refer to Fig. 1-2, a kind of LED daylight lamp, including：It fluorescent tube 1, the lamp plate 2 in fluorescent tube 1 and is socketed respectively Two lamp caps 3 in 1 both ends of fluorescent tube.Wherein fluorescent tube 1 can be the peripheral framework of elongate, using plastics fluorescent tube or Glass lamp Pipe, the present embodiment using tool strengthening section glass lamp, to avoid traditional glass fluorescent tube it is easily rupturable and rupture because drawing during electric leakage The problem of electric shock accidents of hair and plastic lantern tube capacity easy to aging.Fluorescent tube 1 can also be the U-shaped peripheral framework or 2 of elongate The U that the peripheral framework of root elongate is formed by connector (connector can also cope with different applications to be telescopic) Type LED daylight lamp.The end of the fluorescent tube 1 has the pin 301 for inputting external drive current signal.

With continued reference to Fig. 2A, 2B, lamp plate 2 is equipped with several light emitting diodes 202 (or LED unit), several to shine Diode composition LED component 632 (LED component can also be expressed as light emitting diode or light emitting diode group in this programme), Equipped with lamp circuit module 5 (lamp circuit module 5 may also set up outside the fluorescent tube of LED daylight lamp), LED component in lamp cap 3 Pass through 2 electrical communication of lamp plate between 632 and lamp circuit module 5.

Wherein, lamp circuit module 5 can be single body (i.e. all driving power components are all integrated in a component), And in the lamp cap 3 of 1 one end of fluorescent tube；Or lamp circuit module 5 can also be divided into two parts, referred to as double individuals are (i.e. all Power supply module is separately positioned in two components), and two parts are respectively arranged in the lamp cap 3 of lamp tube ends.Or it is placed outside LED The outside of fluorescent lamp is connect by conducting wire with LED daylight lamp.If fluorescent tube 1 only has one end when making strengthening section processing, power supply is preferential The single body of selected as, and in the lamp cap 3 corresponding to the end 101 after strengthening.

Either single body or double individual, the generation type of lamp circuit module can have Mutiple Choice, for example, can be with For a kind of embedding module after molding, specifically, using a kind of silica gel of high heat conduction (thermal conductivity factor >=0.7w/mk), pass through Mold is potted molding to driving power component and obtains.There is the lamp circuit module that this mode obtains high insulation, height to dissipate Heat, the advantages of shape is more regular, and can easily coordinate with other structures part.Or, or do not make embedding gum forming, Directly exposed lamp circuit modular assembly is embedded in inside lamp cap or by the traditional pyrocondensation of exposed lamp circuit module After pipe encases, then the inside of embedded lamp cap 3.Or lamp circuit module is arranged on the outside of lamp cap i.e. by connecting outside conducting wire It connects.

Lamp circuit module 5 (being also referred to as power supply 5 in certain embodiments) and lamp plate 2 and the LED component being equipped in lamp cap 3 632 connection circuit signal is as shown in Figure 3A.Lamp circuit module and LED module are all contained in the LED daylight lamp.LED The both ends that each side there is a lamp cap (not shown), be socketed on fluorescent tube of fluorescent lamp.It please refers to shown in Fig. 2, left side lamp cap 3 It is upper that there is hollow conductive pin 301.One surface of lamp cap 3 has hollow conductive pin 301.With reference to figure 2 and with reference to Fig. 3, hollow conduction Needle 301 altogether equipped with 4, is respectively and electrically connected to 4 metal ferrules (that is, the first pin A1 of side, the second pin A2；And Third pin B1, the 4th pin B2 of opposite side).

Such as the circuit diagram of LED daylight lamp that Fig. 3 A are the utility model embodiment.LED daylight lamp 500 includes：LED Unit 630；And the lamp circuit module for making LED module lighting；Lamp circuit module includes rectification unit 510, filtering Unit 520, compatible circuit 540, releasing can circuit 550, ballast compatible circuit 1510.Wherein, the ballast compatible circuit 1510 is used In the external drive current signal come from ballast when start the LED module 530.

LED unit 630 (being referred to as LED module) is set on lamp plate, and lamp circuit module can be set to lamp plate In upper or lamp cap.The all or part of preferably LED unit 630 is set on lamp plate, and lamp circuit module is set to lamp On plate, the heat of such lamp circuit module will not directly affect LED unit 630.

Rectification unit 510 is electrically connected the first pin A1, the second pin A2 of the LED daylight lamp 500, should will couple An at least one of AC rectification of first pin A1 and second pin A2 are into direct current.Filter unit 520 is electrical The rectification unit 510 is connected to receive the direct current, the direct current to be filtered.

LED unit 630 is electrically connected the filter unit 520, and corresponds to the direct current of filtering and shine.

Compatible circuit 540 is electrically connected the third pin B1 and the 4th pin B2.It is unidirectional that compatible circuit 540 includes first Current path I1 and the second unidirectional current path I2.First unidirectional current path I1 is electrically connected the LED unit 630, to allow Electric current flows to one of third pin B1 and four pin B2 by LED unit 630.Second unidirectional current path I2 is electrically connected should Filter unit 520, electric current to be allowed to flow to filter unit 520 by one of third pin B1 and four pin B2.

In the present embodiment, rectification unit 510 is a bridge rectifier, comprising diode 511,512,513 and 514, To carry out full-wave rectification to alternating current, to generate direct current.

One anode of diode 513 is electrically connected one end of the filter unit 520, and cathode is electrically connected the diode 511 An anode, and a cathode of the diode 511 is electrically connected the other end of the filter unit 520.Above-mentioned diode 511 and 513 tie point is electrically connected first pin A1.The anode of diode 514 is electrically connected one end of the filter unit 520, cloudy Pole is electrically connected the anode of diode 512, and the cathode of diode 512 is electrically connected the cathode of diode 511.Two above-mentioned poles The tie point of pipe 512 and 514 is electrically connected second pin A2.

Rectification unit 510 can also be other kinds of full-wave rectifying circuit or half-wave rectifying circuit, without influencing this reality The function to be reached with New Scheme.

In the present embodiment, which includes capacitance 521.The filter unit 520 receives rectified unit 510 Direct current after rectification, and filter out the radio-frequency component in direct current.Filtered 520 filtered direct current of unit, waveform are One smooth DC waveform.

The filter unit 520 can also be that other can filter out the filter circuit of radio-frequency component (such as the additional electricity for increasing series connection Sense and another capacitance and formed pi type filter in parallel with capacitance 5211), it is intended to reach without influence technical solutions of the utility model The function of arriving.

In the present embodiment, LED unit 630 is made of several LED components 632, can be single string or light-emitting diodes of more going here and there Pipe, with the different power demand of correspondence, provides required illumination.

In the present embodiment, compatible circuit 540 includes diode 515 and 516, capacitance 541.The cathode electricity of diode 515 Property connect the filter unit 520, anode is electrically connected respectively with the cathode of one end of capacitance 541 and diode 516, and two poles The anode of pipe 516 is electrically connected the filter unit 520.The other end of capacitance 541 is electrical respectively by ballast compatible circuit 1510 Connect the third pin B1 and four pin B2.

In the present embodiment, release can circuit 550 include resistance 551 and 552, resistance 551,552 connect after with filter circuit 520 is in parallel, and prevents lighting source from being flickered when turning off the light.It can also be other such as one or more electricity to release energy circuit 550 Resistance and other forms release can circuit, without influence the utility model function to be reached.It that is, can be as release can circuit 550 As long as circuit can be realized：One scheduled current of circulation or more can be continued by releasing energy circuit by this during power remove.According to This scheduled current can be determined according to the current amplitude size of LED component 632.

It releases energy circuit 550 and combines the diffusion layer that the utility model implements proposition, can further reduce the sudden strain of a muscle after power cut-off Bright sense.Improve user experience.

Fig. 3 B are the circuit diagram of the utility model second embodiment；Fig. 3 B and Fig. 3 A difference lies in：The side of Fig. 3 A Case is equally applicable to the occasion of simulation filament, increases simulation heater chain 570.

Embodiment adds two simulation heater chains 570, which respectively contains two electricity of series connection Resistance 573 and 574 and series connection capacitance 571 and 572, and the tie point of two resistance 573 and 574 couple two capacitance 571 and 572 tie point.When LED daylight lamp is installed on the tube face with pre- hot function (such as：Fluorescent tube with electric ballast Seat), in warm, the electric current of AC signal can flow through resistance 573 and 574, the capacitance of the two simulations heater chain 570 571 and 572, and achieve the effect that simulate filament.In this way, electric ballast can normally spend filament pre-heating rank on startup Section, and ensure electric ballast and normally start.

Such as the circuit diagram of LED daylight lamp that Fig. 3 C are the utility model 3rd embodiment.LED daylight lamp 500 includes： LED module 530；And the lamp circuit module for making LED module lighting；Lamp circuit module includes the first rectification unit 510th, compatible circuit 540 and one group of simulation heater chain 570.

LED component 632 is set on lamp plate in LED module 530, and lamp circuit module can be set on lamp plate or lamp cap It is interior.Preferable scheme is completely or partially set on lamp plate for LED module 530, and lamp circuit module is set on lamp cap, this The heat of sampling point circuit for lamp module will not directly affect LED component 632.Wherein, which can receive the external drive Streaming current signal is with luminous.The LED module 530 is coupled with current limiting capacitance 541；The current limiting capacitance 541 is used to limit inflow The electric current of the LED module 530；

Rectification unit 510 is electrically connected the first pin A1, the second pin A2 of the LED daylight lamp 500, should will couple An at least one of AC rectification of first pin A1 and second pin A2 are into direct current.

LED module 530 is electrically connected rectification unit, wherein the branch road parallel connection being made of several LED components 632 is by filtering Capacitance 521, and correspond to the direct current of filtering and shine；The branch discharged in series pipe of capacitance 521 and several LED components 632 composition One end of DB1, the other end of discharge tube are electrically connected the anode of diode 512 and diode 514.

Compatible circuit 540 is electrically connected the third pin B1 and the 4th pin B2.

Compatible circuit 540 includes, diode 513,514 series connection of diode halfwave rectifier branch, wherein diode 513 Cathode be electrically connected to the positive terminal of 632 branch of the cathode of diode 511, one end of capacitance 521 and LED component, diode 513 anode is connected to the cathode of diode 514；

Capacitance 541 is referred to as current limiting capacitance, which is used to limit the electric current for flowing into LED module；And it is connected in parallel on Compatible circuit 560 on capacitance 541, the compatible circuit 560 can be incited somebody to action when the external drive current signal is more than predetermined value The current limiting capacitance 541 accesses circuit, and is connected when the external drive current signal is less than predetermined value.The compatible circuit 560 can be by 541 short circuit of current limiting capacitance in conducting.The compatible circuit 560 includes a MOS switch.

Compatible circuit 560 flows into the size of the electric current of LED daylight lamp 500, intelligent identification LED daylight lamp for detection 500 apply in electric ballast still applied to emergency ballast.Specifically, the compatible circuit 560 can be in the external drive The current limiting capacitance 541 is accessed into circuit, and be less than in the external drive current signal when streaming current signal is more than predetermined value It is connected during predetermined value.

Further, as illustrated in figure 4f, the compatible circuit 560 includes sampling unit 5564 and switch unit 5563； The sampling unit 5564 forms sampled voltage according to the external drive current signal；The switch unit 5563 is adopted described Sample voltage disconnects the compatible circuit 560 so that the current limiting capacitance 541 is accessed circuit, and in the sampling when being more than preset value The compatible circuit 560 is connected when being less than preset value in voltage.Further, the switch unit 5563 includes a MOS switch 4562；The MOS switch 4562 is repeatedly connected and ends, and in institute when the external drive current signal is more than predetermined value It is connected when stating external drive current signal less than predetermined value.Wherein, the sampling unit 5564 includes sampling resistor 4564.It is described Compatible circuit 560 further includes control unit 5562；Described control unit 5562 is used to open according to sampled voltage control Close the cut-off and conducting of unit 5563.

Described control unit 5562 includes power branch, IC chip 4561；First resistor 4563；First capacitance 4565；Three Pole pipe 4567；The both ends of the current limiting capacitance 541 are electrically connected in the both ends of the power branch；The power branch is used for The driving power of the IC chip 4561 is provided；

The IC chip 4561 is electrically connected between the switch unit 5563 and the power branch, and is electrically connected The collector of the triode 4567, the emitter of the triode 4567 connect one end of the power branch, the triode 4567 base stage and the transmitting interpolar of the triode 4567 are electrically connected with first capacitance 4565, the triode 4567 Base stage be electrically connected one end of the first resistor 4563, the other end of the first resistor 4563 and the triode 4567 Transmitting interpolar be electrically connected the sampling unit 5564.

The power branch includes the 5th diode 519,3rd resistor 4568, the second capacitance 4569 branch in sequential series Road；Wherein, the anode of the 5th diode 519 is electrically connected the third diode 517 and first diode 515 Cathode；

The switch unit 5563 includes a MOS switch 4562, and the sampling unit 5564 includes sampling resistor 4564；Institute The grid for stating MOS switch 4562 is electrically connected the IC chip 4561, and the drain electrode of the MOS switch 4562 is electrically connected described the The anode of five diodes 519, the source S pole of the MOS switch 4562 are electrically connected to one end of the sampling resistor 4564, institute State the other end ground connection of sampling resistor 4564.

In the present embodiment, the both ends of LED daylight lamp 500 set simulation heater chain 570, the simulation heater chain respectively 570 are formed by capacitance 571 is in parallel with electronics 572.In practical application, capacitance 571 can be selected an X2 safety capacitance or 2 can make pottery Porcelain capacitance, the reliability with raising simulation heater chain selected in this way.When LED daylight lamp is installed on the lamp with pre- hot function During tube socket (such as：Tube face with electric ballast), in warm, the electric current of AC signal can flow through the two simulations lamp The resistance 572, capacitance 571 of silk circuit 570, and achieve the effect that simulate filament.In this way, electric ballast on startup can It is enough normally to spend the filament pre-heating stage, and ensure electric ballast and normally start.Simulation filament electricity in certain present embodiment Simulation heater chain or other as shown in Fig. 3 B schemes also can be used in road, such as negative temperature coefficient resister (NTC), as long as can reality Now simulate filament pre-heating.

In other implementations, simulation heater chain 570 can not be used yet, LED daylight lamp may not apply at this time The occasion of PS types ballast (ballast of pre- hot function).

To describe the action mechanism of the present embodiment.

The electric current of the output of electric ballast work is larger, usually in 200mA or so；And it is exported during emergency ballast work Electric current it is smaller, typically not greater than 50mA.

Next it combines, with reference to Fig. 3 C and Fig. 4 F, (Fig. 4 F are that the circuit of 560 shunt capacitance 541 of compatible circuit in Fig. 3 is opened up Flutter) carry out detailed description the present embodiment, when LED daylight lamp 500 is powered, MOS switch 4562 is connected,

When applied to electric ballast, since the electric current of electric ballast output is larger (200mA or so), resistance 4564 On sampled voltage it is larger, charge via resistance 4563 to capacitance 4565, the raising of the voltage of capacitance 4565 reaches triode 4567 Activation threshold value, triode 4567 is connected, and the Vcc terminal voltages of IC chip 4561 are pulled low, and IC chip 4561 does not work at this time, MOS switch 4562 ends；At this moment current limiting capacitance 541 accesses circuit, then discharges via capacitance 541, and the voltage at Vcc ends rises, Reach the threshold value of setting, IC chip 4561 is started to work, and OUT terminal output trigger signal, MOS switch 4562 is connected.At this time by Larger (200mA or so) in the electric current of electric ballast output, the sampled voltage on resistance 4564 is connected compared with triode 4567, IC The Vcc terminal voltages of chip 4561 are dragged down again, and IC chip 4561 does not work at this time, and MOS switch 4562 ends, so repeatedly. 4562 periodic conduction and cut-off of MOS switch.Its VCC terminal voltage of different IC chips is also different, in the present embodiment, Vcc works Make voltage and select 21V, the charging time is pulled low the time of (blanking voltage, such as 10V) much larger than Vcc voltage.Thus while MOS Switch the conduction and cut-off in 4562 periods, the identification range of the remote superman's eye of frequency of conduction and cut-off, so, user is sense at this time Feel the flicker less than fluorescent lamp.In addition, in the present embodiment, capacitance 541 can also be set by choosing different capacitances The electric current of LED is crossed in constant current.Simultaneously because there is capacitance 541, the electric current of LED is flowed through, electric ballast noise (electronics town can be reduced Stream device matches the resonance caused with LED daylight lamp).

When should be in emergency ballast, due to emergency electronic ballast output current it is smaller (<50mA or so), resistance 4564 On sampled voltage it is smaller, charge via resistance 4563 to capacitance 4565, since the sampled voltage on resistance 4564 is smaller, up to not To the activation threshold value of triode 4567, triode 4567 ends, therefore MOS switch 4562 maintains constant conduction, in this way by capacitance 541 short circuits.

In present embodiment, the threshold value that discharge tube DB1 chooses is between 250V~600V.Preferably, threshold value chooses 250V, 300V, 350V, 400V.If the threshold values of discharge tube DB1 conductings is too small, it is to have asking for compatibility during certain ballasts matchings Topic, it is impossible to successfully light LED daylight lamp.Itself main reason is that：When LED daylight lamp is powered, the also abnormal work of electric ballast Make, the discharge tube of LED daylight lamp has been connected (impedance changes at this time), electric ballast erroneous judgement load (the LED days connected Light lamp) it is abnormal.

Design in this way is advantageous in that：

①：Due to the presence of capacitance 541 (also referred to as current limiting capacitance), LED current can be made adjustable by selecting suitable parameter Section improves the efficiency of LED lamp tube.

②：So that LED daylight lamp can compatible electronic ballast and compatible emergency ballast.

③：The problem of part ballast noise is big can be reduced, and (electric ballast matches the humorous of initiation with LED daylight lamp It shakes).

④：LED daylight lamp can be successfully lighted when improving electrical network low voltage.

Next, ballast compatible circuit 1510 in the embodiment of description Fig. 3 A-B, the preferable reality of ballast compatible circuit 1510 Apply the circuit of example as shown in figs. 4a-e.

Ballast compatible circuit 1510 shown in Fig. 4 A, comprising：Bidirectional triode thyristor TR, discharge tube 561；1 end of discharge tube 561 (first end) is connected to a ends, and for receiving external drive current signal, 2 ends (second end) of discharge tube 561 are connected at a ends The triggering end of bidirectional triode thyristor TR, 2 ends (second end) of bidirectional triode thyristor TR are connected to b ends, which connects the current limiting capacitance (541) one end；When the voltage at 561 both ends of discharge tube reaches the threshold value of setting, discharge tube 561 is connected, and triggers bidirectional triode thyristor TR, at this moment bidirectional triode thyristor TR conductings (i.e. a, b are connected between end, start LED daylight lamp 500).

Parameter declaration：Pressure-resistant 600~1300V of range of bidirectional triode thyristor TR in the present embodiment；600V is selected in the present embodiment； Voltage threshold range 20V~100V of discharge tube 561；Preferably choose between 30V~70V；The present embodiment chooses 68V.

Ballast compatible circuit 1510 shown in Fig. 4 B, comprising：Bidirectional triode thyristor TR, discharge tube 561, discharge tube 562, capacitance 563；1 end (first end) of discharge tube 561 is connected to a ends, and 2 ends (second end) of fulgurite 561 are connected to 1 end of discharge tube 562 1 end (first end) of (first end) and capacitance 563；2 ends (second end) of discharge tube 562 are connected to the triggering of bidirectional triode thyristor TR End, 2 ends (second end) of capacitance 563 are connected to b ends.When the voltage at 561 both ends of discharge tube reaches the threshold value of setting, discharge tube 561 are connected, at this moment 563 charged state of capacitance, when the voltage at 562 both ends of discharge tube reaches the threshold triggers bidirectional triode thyristor of setting TR, at this moment bidirectional triode thyristor TR conductings (i.e. a, b are connected between end, start LED daylight lamp 500).

Parameter declaration：Pressure-resistant 600~1300V of range of bidirectional triode thyristor TR in the present embodiment；600V is selected in the present embodiment； Voltage threshold range 200V~600V of discharge tube 561；Preferably choose between 300V~440V；The present embodiment chooses 340V； Voltage threshold range 20V~100V of discharge tube 562；Preferably choose between 30V~70V；The present embodiment chooses 68V；Capacitance 563 range, 2~50nF choose 10nF in the present embodiment.The voltage threshold of discharge tube 561 is more than discharge tube in the present embodiment 562 voltage threshold.

Ballast compatible circuit 1510 shown in Fig. 4 C, with Fig. 4 B difference lies in：Discharge tube is replaced with bilateral diode 564 562.Parameter declaration：Pressure-resistant 600~1300V of range of bidirectional triode thyristor TR in the present embodiment；600V is selected in the present embodiment；Electric discharge Voltage threshold range 200V~600V of pipe 561；Preferably choose between 300V~440V；The present embodiment chooses 340V；It is two-way Voltage threshold range 20V~100V of diode 564；Preferably choose between 30V~70V；The present embodiment chooses 68V；Capacitance 563 range, 2~50nF choose 10nF in the present embodiment.The voltage threshold of discharge tube 561 is more than two-way two in the present embodiment The voltage threshold of pole pipe 564.

Ballast compatible circuit 1510 shown in Fig. 4 D, with Fig. 4 A difference lies in：Eliminate bidirectional triode thyristor TR.At this point, institute It states ballast compatible circuit 1510 and includes the first discharge tube 561；The both ends of first discharge tube 561 are respectively used to receive external drive One end of streaming current signal and the connection current limiting capacitance 541.First discharge tube 561 is connected to the ballast compatibility electricity Between the both ends on road 1510.

Parameter declaration：Voltage threshold range 20V~100V of discharge tube 561；Preferably choose between 30V~70V；This reality It applies example and chooses 68V.

Ballast compatible circuit 1510 shown in Fig. 4 E, with Fig. 4 B difference lies in：2 ends of discharge tube 561 and bilateral diode Resistance 565 is added between 564 1 end, remaining is unchanged.

Parameter declaration：Pressure-resistant 600~1300V of range of bidirectional triode thyristor TR in the present embodiment；600V is selected in the present embodiment； Voltage threshold range 200V~600V of discharge tube 561；Preferably choose between 300V~440V；The present embodiment chooses 340V； Voltage threshold range 20V~100V of bilateral diode 564；Preferably choose between 30V~70V；The present embodiment chooses 68V； The range of capacitance 563,2~50nF choose 10nF in the present embodiment.

As the deformation of the present embodiment, resistance 565. can be also added between 2 ends of discharge tube 561 and 1 end of discharge tube 562 Remaining is unchanged.

Design in this way, the electric ballast that can be solved in background cannot at electrical network low voltage (during less than 120V) Normal the problem of starting LED daylight lamp.Simultaneously by the topology of Fig. 4 A- Fig. 4 E can be seen that the utility model proposes scheme select Less component greatly improves the reliability of system in this way.

Compatible circuit 1510 shown in Fig. 4 F, comprising：Rectification unit 5561, control unit 5562 and are adopted switch unit 5563 Sample unit 5564；

Rectification unit 5561 flows into the electric current of LED daylight lamp for rectification, and electric energy is provided to control unit 5562；

The rectification circuit that rectification unit 5561 is made of 4 diodes, diode 515, diode 516, diode 517, Diode 518；The cathode of diode 515 is electrically connected the cathode of diode 517, and the anode of diode 515 is electrically connected two poles The cathode of pipe 516, the anode of diode 516 are electrically connected the anode of diode 518, and the cathode of diode 518 is electrically connected two The anode of pole pipe 517；Diode 515 and the tie point and diode 517 and the tie point of diode 518 of diode 516 are distinguished It is electrically connected the both ends of capacitance 541.

Control unit 5562 includes, and diode 519, resistance 4568, capacitance 4569 branch in sequential series, the branch are used for The driving power of IC chip 4561 is provided, the wherein anode of diode 519 is electrically connected the moon of diode 517 and diode 515 Pole；IC chip 4561；Resistance 4563；Capacitance 4565；Resistance 4566；Triode 4567；

The OUT terminal of IC chip 4561 is electrically connected the grid (G poles) of the MOS switch 4562 of switch unit 5563, IC chip 4561 GND ends, OVP ends and CS ends is all grounded, and the VCC ends of IC chip 4561 are electrically connected one end of resistance 4566, resistance 4566 other end is electrically connected the collector of triode 4567, the emitter ground connection of triode 4567, the base of triode 4567 The transmitting interpolar of pole and triode 4567 is electrically connected with capacitance 4565, and the base stage of triode 4567 is electrically connected resistance 4563 One end, the other end of resistance 4563 are electrically connected sampling unit 5564 with the transmitting interpolar of triode 4567.

Sampling unit 5564 includes a sampling resistor 4564.

Switch unit 5563, comprising a MOS switch 4562, the MOS switch 4562 is in the external drive current signal End during more than predetermined value, and be connected when the external drive current signal is less than predetermined value.Specifically, MOS switch 4562 Grid (G poles) be electrically connected IC chip 4561 OUT terminal, drain electrode (D poles) be electrically connected diode 519 anode, source electrode (S Pole) it is electrically connected to one end of sampling resistor 4564, the other end ground connection of sampling resistor 4564.

In other examples, it is electrically set between the anode of diode 519 in the drain electrode of MOS switch 4562 (D poles) Resistance.

In the preferred embodiment, the two-sided of printed circuit board is equipped with electronic building brick.Rectification unit 510, filter unit, The part or all of circuit in circuits is waited to include dual inline type (DIP, dual inline-pin) package assembling.These are double Row inline package component is arranged on the same side in left side and/or right side printed circuit board；In addition, left side and/or right side print Circuit board processed may also set up the component of non-dual-inline package.Due to the higher dual-inline package component quilt of component height The same side is set to, can effectively reduce the printed circuit board whole height that component has been set.

It needs to point out, in other embodiments, for same root LED daylight lamp, " lamp plate is using flexible In the features such as formula circuit board ", " lamp circuit module ", " releasing energy circuit ", one or more can be only included.

In lamp plate is using flexible circuit board, by leading between the output terminal of the flexible circuit board and the power supply It is welded between the connection of line routing or the output terminal of the flexible circuit board and the power supply.In addition, the flexible circuit board Storehouse including a dielectric layer and a line layer；Flexible circuit board can in the circuit protecting layer of surface coating printing ink material, And realize the function of reflectance coating by increasing width circumferentially.

Be coated in diffusion layer in fluorescent tube inner peripheral surface, the constituent of the diffusion coating include calcium carbonate, calcium halophosphate activated by antimony andmanganese with And at least one of aluminium oxide and thickener and ceramics activated carbon and thickener and ceramics activated carbon.It is in addition, described Diffusion layer also can be diffusion barrier sheet and cover on outside light source.

It is coated in reflecting layer in tube inner wall, the light source may be disposed on reflecting layer, be set to the reflecting layer trepanning In or in the side in the reflecting layer.

In burner design, in burner design, lamp cap can include insulation tube and heat-conducting part, and wherein hot melt adhesive can fill out Fill a part for accommodating space or the full accommodating space of filling.Alternatively, lamp cap includes insulation tube and magnetic conductive metal part, wherein, it leads Magnetic metalwork can be round or non-circular, and can be reduced and insulation tube by setting emptying aperture structure or scoring structure Contact area.It in addition, can also be by the way that support portion, protrusion be set to strengthen the support to magnetic conductive metal part and reduction in insulation tube The contact area of magnetic conductive metal part and insulation tube.The length of side lamp cap is about half (its cripetura portion of opposite side lamp cap length Divide and compensated by fluorescent tube extension, ensure that the entire length of LED daylight lamp meets regulation, because the length of fluorescent tube has extension, be attached to lamp The interval between LED component on the lamp plate of inside pipe wall can increase accordingly, can improve radiating efficiency in this way, extend LED component Service life).In other embodiments, the lamp cap at LED daylight lamp both ends is using symmetrical design.

That is, features described above can be made to arbitrary permutation and combination, and for the improvement of lighting device.

In addition, it is necessary to point out, in other embodiments, for LED light, ballast circuit for detecting is located at LED light is internal or external, " connection mode of LED component ", " form of compatible circuit " and the change etc. of LED lamp structure it is various The change of feature, has no effect on the utility model, and the utility model still can reach above-mentioned detecting LED drive power and adaptability tune The whole function with normal operating.In circuit " release can circuit ", " filter circuit ", " simulation heater chain ", " rectification unit " etc. In feature, it arbitrarily can omit one or all and influence the detecting LED drive power of the utility model and be adaptively adjusted Function.Etc. in features, one or more can be only included.

Herein cited any digital value all include between lower limiting value to upper limit value with the lower value of an incremented and The all values of upper value, there are the intervals of at least two units between any lower value and any much higher value.For example, such as Fruit elaborates that the quantity of component or the value of process variable (such as temperature, pressure, time etc.) are from 1 to 90, preferably from 20 To 80, more preferably from 30 to 70, then purpose is arrived in order to illustrate also clearly listing such as 15 to 85,22 in the specification 68th, 43 to 51,30 to 32 is equivalent.For being less than 1 value, it is 0.0001,0.001,0.01,0.1 suitably to think a unit. These are only intended to the example clearly expressed, it is believed that the numerical value enumerated between minimum and peak is possible to Combination is all expressly set forth in the specification in a similar manner.

Unless otherwise indicated, all ranges all include all numbers between endpoint and endpoint.It is used together with range " about " or " approximation " be suitable for two endpoints of the range.Thus, " about 20 to 30 " are intended to covering " about 20 to about 30 ", including at least the endpoint indicated.

All articles and reference disclosed, including patent application and publication, for various purposes by quoting knot Together in this.Identified element, ingredient, component or step and reality should be included by describing the term " substantially by ... form " of combination Other elements, ingredient, component or the step of the basic novel feature of the combination are not influenced in matter.Using term "comprising" or " comprising " describes the combination of element here, ingredient, component or step it is also contemplated that substantially by these elements, ingredient, component Or the embodiment that step is formed.Here by using term " can with ", it is intended to it is described any to illustrate that " can with " includes Attribute is all optional.

Multiple element, ingredient, component or step can be provided by single integrated component, ingredient, component or step.Optionally Ground, single integrated component, ingredient, component or step can be divided into multiple element, ingredient, component or the step of separation.It is used for The open "a" or "an" for describing element, ingredient, component or step is not said to exclude other elements, ingredient, component Or step.

It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouch It states, many embodiments and many applications except the example provided all will be aobvious and easy for a person skilled in the art See.Therefore, the range of this introduction should not be determined with reference to foregoing description, but should with reference to appended claims and this The four corner of equivalent that a little claims are possessed determines.For comprehensive purpose, all articles and with reference to including special The disclosure of profit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in preceding claims Any aspect is not intended to abandon the body matter, also should not be considered as inventor the theme is not thought of as it is disclosed A part for utility model theme.

Claims (17)

1. a kind of LED daylight lamp, which is characterized in that including：

Fluorescent tube (1), end have the pin (A1, A2, B1, B2) for inputting external drive current signal；

LED module (530) is used to receive the external drive current signal to shine；The LED module (530) is coupled with Current limiting capacitance (541)；The current limiting capacitance (541) flows into the electric current of the LED module (530) for limiting；

The compatible circuit (560) in parallel with the current limiting capacitance (541)；The compatible circuit (560) can be in the external drive The current limiting capacitance (541) is accessed into circuit, and be less than in the external drive current signal when current signal is more than predetermined value It is connected during predetermined value.

2. LED daylight lamp as described in claim 1, it is characterised in that：The compatible circuit (560) is including sampling unit (5564) and switch unit (5563)；The sampling unit (5564) forms sampling electricity according to the external drive current signal Pressure；The switch unit (5563) disconnects the compatible circuit (560) when the sampled voltage is more than preset value with by described in Current limiting capacitance (541) accesses circuit, and the compatible circuit (560) is connected when the sampled voltage is less than preset value.

3. LED daylight lamp as claimed in claim 2, it is characterised in that：The switch unit (5563) includes a MOS switch (4562)；The MOS switch (4562) is repeatedly connected and ends when the external drive current signal is more than predetermined value, and It is connected when the external drive current signal is less than predetermined value.

4. LED daylight lamp as claimed in claim 2, it is characterised in that：The sampling unit (5564) is including sampling resistor (4564)。

5. LED daylight lamp as claimed in claim 2, it is characterised in that：The compatible circuit (560) further includes control unit (5562)；Described control unit (5562) is for controlling the cut-off of the switch unit (5563) according to the sampled voltage with leading It is logical.

6. LED daylight lamp as claimed in claim 5, it is characterised in that：Described control unit (5562) includes power branch, IC Chip (4561)；First resistor (4563)；First capacitance (4565)；Triode (4567)；The both ends difference of the power branch It is electrically connected the both ends of the current limiting capacitance (541)；The power branch is used to provide the driving electricity of the IC chip (4561) Source；

The IC chip (4561) is electrically connected between the switch unit (5563) and the power branch, and is electrically connected The collector of the triode (4567), the emitter of the triode (4567) connect one end of the power branch, and described three The base stage of pole pipe (4567) is electrically connected with first capacitance (4565) with the transmitting interpolar of the triode (4567), described The base stage of triode (4567) is electrically connected one end of the first resistor (4563), the other end of the first resistor (4563) The sampling unit (5564) is electrically connected with the transmitting interpolar of the triode (4567).

7. LED daylight lamp as claimed in claim 2, it is characterised in that：The compatible circuit (560) further includes rectification unit (5561) and control unit (5562)；The rectification unit is used for the external drive current signal rectification and to the control Unit (5562) processed provides electric energy；Described control unit (5562) is for according to the sampled voltage control switch unit (5563) cut-off and conducting.

8. LED daylight lamp as claimed in claim 7, it is characterised in that：The rectification unit (5561) includes the first diode (515), the second diode (516), third diode (517), the 4th diode (518)；The moon of first diode (515) Pole is electrically connected the cathode of second diode (517)；The anode of first diode (515) is electrically connected described second The cathode of diode (516), the anode of second diode (516) are electrically connected the anode of the 4th diode (518), The cathode of 4th diode (518) is electrically connected the anode of the third diode (517)；First diode (515) with the tie point of second diode (516) and the third diode (517) and the 4th diode (518) Tie point the both ends of the current limiting capacitance (541) are electrically connected.

9. LED daylight lamp as claimed in claim 8, it is characterised in that：Described control unit (5562) includes power branch, IC Chip (4561)；First resistor (4563)；First capacitance (4565)；Second resistance (4566)；Triode (4567)；The power supply Branch connects the cathode of the third diode (517) and first diode (515)；The power branch is used to provide institute State the driving power of IC chip (4561)；

The IC chip (4561) is electrically connected between the switch unit (5563) and the power branch, and is electrically connected One end of the second resistance (4566), the other end of the second resistance (4566) are electrically connected the triode (4567) Collector, the emitter of the triode (4567) connect one end of the power branch, the base stage of the triode (4567) with The transmitting interpolar of the triode (4567) is electrically connected with first capacitance (4565), the base stage of the triode (4567) It is electrically connected one end of the first resistor (4563), the other end and the triode (4567) of the first resistor (4563) Transmitting interpolar be electrically connected the sampling unit (5564).

10. LED daylight lamp as claimed in claim 9, it is characterised in that：The power branch include the 5th diode (519), 3rd resistor (4568), the second capacitance (4569) branch in sequential series；Wherein, the anode electricity of the 5th diode (519) Property the connection third diode (517) and first diode (515) cathode；

The switch unit (5563) includes a MOS switch (4562), and the sampling unit (5564) is including sampling resistor (4564)；The grid of the MOS switch (4562) is electrically connected the IC chip (4561), the leakage of the MOS switch (4562) Pole is electrically connected the anode of the 5th diode (519), and the source electrode (S poles) of the MOS switch (4562) is electrically connected to institute State one end of sampling resistor (4564), the other end ground connection of the sampling resistor (4564).

11. the LED daylight lamp as described in claim 1-10 is any, it is characterised in that：The current limiting capacitance (541) is connected with town Flow compatible circuit (1510)；The ballast compatible circuit (1510) is for when the external drive current signal comes from ballast Start the LED module (530).

12. LED daylight lamp as claimed in claim 11, it is characterised in that：The ballast compatible circuit (1510) includes connection The first discharge tube (561) between the both ends of the ballast compatible circuit (1510)；The both ends of first discharge tube (561) It is respectively used to the one end for receiving external drive current signal and the connection current limiting capacitance (541).

13. LED daylight lamp as claimed in claim 12, it is characterised in that：Ballast compatible circuit (1510) company of further including The bidirectional triode thyristor (TR) being connected between the both ends of the ballast compatible circuit (1510)；The of first discharge tube (561) One end connects the first end of the bidirectional triode thyristor (TR)；First discharge tube (561) second end connection it is described it is two-way can Control the triggering end of silicon (TR).

14. LED daylight lamp as claimed in claim 13, it is characterised in that：The ballast compatible circuit (1510) further includes Two discharge tubes (562), third capacitance (563)；Second discharge tube (562) is series at the of first discharge tube (561) Between the triggering end of two ends and the bidirectional triode thyristor (TR)；The first end connection described first of the third capacitance (563) is put The second end of fulgurite (561), the second end of the third capacitance (563) connect the second end of the bidirectional triode thyristor (TR).

15. LED daylight lamp as claimed in claim 14, it is characterised in that：The ballast compatible circuit (1510) further includes Four resistance (565)；4th resistance (565) is electrically connected at the second end and described second of first discharge tube (561) Between the first end of discharge tube (562).

16. LED daylight lamp as claimed in claim 13, it is characterised in that：The ballast compatible circuit (1510) further includes double To diode (564), third capacitance (563)；The bilateral diode (564) is series at the of first discharge tube (561) Between the triggering end of two ends and the bidirectional triode thyristor (TR)；The first end connection described first of the third capacitance (563) is put The second end of fulgurite (561), the second end of the third capacitance (563) connect the second end of the bidirectional triode thyristor (TR).

17. LED daylight lamp as claimed in claim 16, it is characterised in that：The ballast compatible circuit (1510) further includes Four resistance (565)；4th resistance (565) be electrically connected at the second end of first discharge tube (561) with it is described two-way Between the first end of diode (564).