CN208258127U - Led daylight lamp - Google Patents

Abstract

The utility model discloses a kind of LED daylight lamp, comprising: fluorescent tube (1), end have the pin (A1, A2, B1, B2) for inputting external drive signal；LED module (530) is used to receive the external drive signal to shine；Current limiting capacitance (541) is coupled to the LED module (530) and for adjusting the electric current for flowing through the LED module (530)；And compatible circuit (1510 or 5510)；The compatible circuit is connected in parallel with the current limiting capacitance (541), and can make the compatible different types of ballast of the LED daylight lamp according to the external drive signal.The LED daylight lamp is capable of all types of electrical ballast of friendly compatibility and is compatible with emergency type ballast, and can normally start LED daylight lamp in electrical network low voltage.

Description

LED daylight lamp

Technical field

The utility model belongs to lighting area more particularly to a kind of LED daylight lamp.

Background technique

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 household or workplace that the illumination option such as fluorescent tube is dominated, LED daylight lamp lamp it is hardly surprising that gradually at 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 LED daylight lamp lamp will be the illumination option of escapable cost after all factors.

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, need to consider when being substituted for LED daylight lamp lamp LED daylight lamp lamp how the You Hao existing variety classes of compatibility 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 electric ballast of thermal starting type (Program Start).Electric ballast has resonance circuit, driving design and daylight The load characteristic of lamp matches, i.e., electric ballast is capacitive component before lighting in fluorescent lamp, and after lighting is resistive group Part provides corresponding startup program, and lights fluorescent lamp correctly.And LED is non-linear component, the spy with fluorescent lamp Property is entirely different.Therefore, LED daylight lamp lamp will affect the resonance design of electric ballast, and cause compatibility issue.

Then when certain IS type electric ballasts match, existing in low-voltage when 120V (network voltage be lower than) cannot be at The phenomenon that function 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 driving signal that electric ballast is exported；Therefore, it is compatible with the LED day of electric ballast 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 high frequency (typically not greater than 20KHz) pulsed is exported when emergency ballast works, Electric current is different from the electric current of the output of electrical ballast, and (size of current that usual emergency ballast exports when working is no more than 50mA, and the electric current of electric ballast work output is in 200mA or so).Since the difference of driving signal is compatible to electronic ballast The LED day-light lamp of device possibly can not be compatible with emergency ballast, and be unfavorable for the large-scale popularization and application of LED daylight lamp.

Applicant previously (date of application: had disclosed a kind of LED in application case CN201520753878.2 in 2015/9/25) Straight lamp may include a kind of compatible circuit 1510 and current limiting component, wherein 1510 system of the compatible circuit and the current limiting component string Connection connection.Likewise, applicant is previously in the (date of application: in 2017/3/27) also of application case CN 201590001018.1 Disclose this feature.The effect of compatible circuit 1510 in the two earlier applications case is all to enable LED straight lamp by ballast The smoothly compatibility of starting or improvement and ballast.

Furthermore the headlamp for directly replacing conventional fluorescent may have to simulate the group of filament in fluorescent lamp Part, but these common emulation components but have the risk that copying is lost after no small break down or its use The disadvantages of service life is not long and the use of these emulation components is not safe enough to user during lighting.

Further, since there are many type and design method of conventional fluorescent ballast, therefore the property difference between various types is big.For Compatible conventional fluorescent ballast accounts for the characteristic of certain types of ballast, and common LED light can include more complicated Circuit can obviously increase the risks such as over-voltage/overcurrent and energy consumption in order to the lighting that can be succeeded by ballast, so complicated circuit.

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 some embodiments (in spite of in claim) for describing to disclose in this description, rather than all possibility Embodiment complete description.The some embodiments for being described below as each features or aspect of " the utility model " can not With mode independence or merge to form a LED straight lamp or in which a part.

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

A kind of LED daylight lamp, comprising:

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

LED module 530 is used to receive the external drive signal to shine；

Current limiting capacitance 541 is coupled to the LED module 530 and for adjusting the electric current for flowing through the LED module 530；With And

Compatible circuit 1510 or 5510；The compatible circuit is connected in parallel with the current limiting capacitance 541, and can be according to External drive signal makes the compatible different types of ballast of the LED daylight lamp.By by the compatible circuit and the current limliting Capacitor is connected in parallel, the different types of ballast of compatibility that the LED daylight lamp of the utility model can be friendly, such as compatible electronic Ballast and emergency type ballast can not be suitable for emergency lighting to solve the problems, such as that general or traditional LED daylight lamp is possibly.

Preferably, the LED daylight lamp further include:

The simulation heater chain 570 being connected between the compatible circuit and the pin；The simulation heater chain 570 For the simulation filament fever when the external drive signal comes from preheating type ballast.

Preferably, the simulation heater chain 570 includes first capacitor 571, first resistor 573；The first capacitor 571 It is in parallel with the first resistor 573.

Preferably, the simulation heater chain 570 includes first capacitor 571, the second capacitor 572 and first resistor 573；The first capacitor 571 and the concatenated branch of the second capacitor 572 are in parallel with the first resistor 573 to form the simulation lamp Silk circuit.

Preferably, the simulation heater chain 570 includes: concatenated first capacitor 571 and the second capacitor 572 and string The first resistor 573 and second resistance 574 of connection；The tie point of the first resistor 573 and second resistance 574 couple this described The tie point of one capacitor 571 and the second capacitor 572.Configured in this way simulation heater chain 570, so that simulation 570 institute of heater chain The capacitor 571 or any open circuit of resistance 573 that include or short circuit, and/or, capacitor 572 or any open circuit of resistance 574 or short circuit, institute State simulation heater chain 570 still can normal operation and have quite high serious forgiveness.

Preferably, the simulation heater chain 570 includes: first capacitor 571, the second capacitor 572, third capacitor 575, and Four capacitors 576；

First capacitor 571 and the concatenated branch of the second capacitor 572 and third capacitor 575 and the concatenated branch of the 4th capacitor 576 Road is in parallel；The tie point of the tie point and third capacitor 575 and the 4th capacitor 576 of the first capacitor 571 and the second capacitor 572 It is electrically connected.Similarly, simulation heater chain 570 configured in this way so that simulation heater chain 570 capacitor 571 that is included or Any open circuit of capacitor 575 or short circuit, and/or, capacitor 572 or any open circuit of capacitor 576 or short circuit, the simulation heater chain 570 still can normal operation and have quite high serious forgiveness.

Preferably, the compatible circuit 1510 can be when the electric current of the external drive signal be greater than predetermined value by the limit Galvanic electricity holds 541 access circuits, and is connected when the electric current of the external drive signal is less than predetermined value.

Preferably, the LED module 530 includes LED unit 630, and the LED daylight lamp further includes the first discharge tube 561/ DB1, the first discharge tube 561/DB1 connect with the current limiting capacitance 541 or the LED unit 630.

Preferably, the LED daylight lamp further includes bidirectional triode thyristor TR；The first end of first discharge tube 561 connects The first end of the bidirectional triode thyristor TR；The second end of first discharge tube 561 connects the triggering of the bidirectional triode thyristor TR End.In this preferred embodiment, the LED daylight lamp includes simple first discharge tube 561 (or plus described two-way Silicon-controlled TR) as having been powered by ballast there is the compatible circuit of Delayed conducting function, such embodiment is substantially better than one The more complicated compatibility ballast circuit being had in a little LED lamps, because of first device that the compatible circuit of such embodiment uses Part is seldom, therefore the risks such as its over-voltage/overcurrent and energy consumption are very low.

Preferably, the LED daylight lamp further includes the second discharge tube 562, the 5th capacitor 563；Second discharge tube 562 It is series between the second end of first discharge tube 561 and the triggering end of the bidirectional triode thyristor TR；5th capacitor 563 First end connect the second end of first discharge tube 561, the second end connection of the 5th capacitor 563 is described two-way controllable The second end of silicon TR.

Preferably, the LED daylight lamp further includes 3rd resistor 565；The 3rd resistor 565 is electrically connected at described Between the second end of one discharge tube 561 and the first end of second discharge tube 562.

Preferably, the LED daylight lamp further includes bilateral diode 564, the 5th capacitor 563；The bilateral diode 564 It is series between the second end of first discharge tube 561 and the triggering end of the bidirectional triode thyristor TR；5th capacitor 563 First end connect the second end of first discharge tube 561, the second end connection of the 5th capacitor 563 is described two-way controllable The second end of silicon TR.

Preferably, the compatible circuit 1510 includes: control unit 5562, switch unit 5563 and sampling unit 5564； The sampling unit 5564 forms sampled voltage according to the external drive signal；The switch unit 5563 is in the sampling electricity Pressure disconnects the compatible circuit 1510 so that the current limiting capacitance 541 is accessed circuit when being greater than preset value, and in the sampling electricity The compatible circuit 1510 is connected when being less than preset value in pressure；Described control unit 5562 is used to control institute according to the sampled voltage State the cut-off and conducting of switch unit 5563.

Preferably, described control unit 5562 includes power branch, IC chip 4561；4th resistance 4563；6th capacitor 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 described 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 The emitter of the collector of the triode 4567, the triode 4567 connects one end of the power branch, the triode The transmitting interpolar of 4567 base stage and the triode 4567 is electrically connected with the 6th capacitor 4565, the triode 4567 base stage is electrically connected one end of the 4th resistance 4563, the other end and the triode of the 4th resistance 4563 4567 transmitting interpolar is electrically connected the sampling unit 5564.

Preferably, the compatible circuit 1510 or 5510 is configured as: when the external drive signal is AC signal, The electric current that the external communication driving signal generates flows through the current limiting capacitance 541.

Preferably, the compatible circuit 5510 is configured as: described when the external drive signal is DC signal Compatible circuit is by the external drive signal triggering and conducting, therefore current limliting electricity described in the current bypass of external drive signal generation Hold 541.

Preferably, the compatible circuit 5510 includes bidirectional triode thyristor 5511, bilateral diode 5514, the 7th capacitor 5516, the 5th resistance 5518；The end A of the bidirectional triode thyristor 5511 is electrically connected one end of the current limiting capacitance 541, described double To silicon-controlled 5511 the other end be electrically connected the 7th capacitor 5516 one end and the current limiting capacitance 541 it is another End；The triggering end of the bidirectional triode thyristor 5511 is electrically connected one end of the bilateral diode 5514；The bilateral diode 5514 other end is electrically connected one end of the 5th resistance 5518 and the other end of the 7th capacitor 5516；It is described The other end of 5th resistance 5518 is electrically connected one end of the 7th capacitor 5516 and the A of the bidirectional triode thyristor 5511 End.

Preferably, is in series between the other end of the 5th resistance 5518 and the end A of the bidirectional triode thyristor 5511 Six resistance 5515；

The 8th capacitor is in series between the other end of 5th resistance 5518 and one end of the 7th capacitor 5516 5517。

Preferably, inductance 5512 is in series between the other end and the current limiting capacitance 541 of the bidirectional triode thyristor 5511； The other end of the bidirectional triode thyristor 5511 is electrically connected one end of the inductance 5512, and the other end of the inductance 5512 is electrical Connect the other end of the current limiting capacitance 541；One end of 7th capacitor 5516 is electrically connected one end of the inductance 5512.

Preferably, the compatible circuit 5510 further includes the other end and the current limiting capacitance for being series at the inductance 5512 Protective device 5513 between 541 other end；The protective device is more than rated current for the electric current that inductance 5512 flows into When starting protection.

The scheme for the LED daylight lamp that the application proposes one or a combination set of can have the following advantages: can reduce electronics The noise electric ballast of ballast matches the resonance caused with LED daylight lamp；The all types of electron type town of the friendly compatibility of energy Flow device；Compatibility emergency type ballast that can also be friendly；LED daylight lamp can normally be started in electrical network low voltage；Due to compatibility It in different types of ballast, is avoided that or reduces accidentally using the generation of the ballast of inadequacy, therefore power consumption can be reduced, promote effect Rate.

Above general introduction and next be described in detail are all exemplary in nature, are in order to further illustrate the utility model Claim.And the other objects and advantages in relation to the utility model, it will be illustrated in subsequent explanation with attached drawing.

Detailed description of the invention

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 any creative labor, It is also possible to obtain other drawings based on these drawings.

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

Fig. 2A -2B is the utility model embodiment LED daylight lamp stereogram exploded view；

Fig. 3 A- Fig. 3 E is the circuit diagram of the LED daylight lamp of the embodiments of the present invention；

Fig. 4 A- Fig. 4 G is the circuit diagram of compatible circuit in Fig. 3 A-3B.

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 scheme in the embodiment of the 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 practical new that this all should belong in technical staff's every other embodiment obtained without making creative work The range of type protection.

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

Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein "and/or" packet Include any and all combinations of one or more related listed items.

Please refer to Fig. 1-Fig. 2 B, a kind of LED daylight lamp, comprising: fluorescent tube 1, the lamp plate 2 in fluorescent tube 1, and cover respectively It is connected to two lamp caps 3 at 1 both ends of fluorescent tube；Lamp cap 3 passes through the both ends of glue sticking and fluorescent tube 2, and lamp plate 2 is affixed on fluorescent tube by bonding agent 1 inner surface.Wherein fluorescent tube 1 can be the peripheral framework of elongate, and using plastics fluorescent tube or glass lamp, the present embodiment is adopted The glass lamp of apparatus strengthening section, to avoid traditional glass fluorescent tube is easily rupturable and the electric shock accidents that causes by electric leakage of rupture, And the problem that plastic lantern tube capacity is easy to aging.

In other examples, fluorescent tube 1 can also be the U-shaped peripheral framework of elongate or the external surrounding frame of 2 elongates Body passes through the U-shaped LED daylight lamp that connector (connector can also be telescopic to cope with different applications) is formed.

G is please referred to Fig.1 to Fig.4, a kind of embodiment of the utility model provides a kind of LED daylight lamp, comprising: fluorescent tube 1, End has pin A1, A2, B1, B2 for inputting external drive signal；LED module 530 is used to receive the external drive Dynamic signal is to shine；Current limiting capacitance 541 is coupled to the LED module 530 and flows through the LED module 530 for adjusting Electric current；And compatible circuit 1510 or 5510；The compatible circuit 1510 or 5510 is connected in parallel with the current limiting capacitance 541, And the compatible different types of ballast of the LED daylight lamp can be made according to the external drive signal.

With continued reference to Fig. 2A, Fig. 2 B, lamp plate 2, which is equipped with several light emitting diodes 202, (it is mono- can also to be expressed as LED Member), (LED component can also be expressed as light emitting diode or light emitting diode to several light emitting diode composition LED components 632 Group), lamp cap 3 is embedded with lamp circuit module 5, and (in the embodiment of power supply externally positioned type, lamp circuit module 5 is configured at LED days The outside of light lamp), pass through the conductive layer (not shown) electrical communication of lamp plate 2 between LED component 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 module), 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 embedded in respectively in the lamp cap 3 at LED daylight lamp both ends.Or it is external In the outside of LED daylight lamp, it is connect by conducting wire with LED daylight lamp.Or part (or whole) member of lamp circuit module 5 Device is equipped on lamp plate 2, can optimize the size of the circuit board of lamp circuit module 5 in this way, the further size for optimizing lamp cap.

Next Fig. 2A -2B and Fig. 3 A-3E is combined, description lamp circuit module 5 (is also referred to as power supply in certain embodiments 5) topological with the connection of lamp plate 2 and LED component 632.It please refers to shown in Fig. 2A -2B, the end of LED daylight lamp lamp cap 3 is configured with Hollow conductive pin 301 (solid conductive pin can also).With reference to Fig. 2A -2B and Fig. 3 A-3E is combined, hollow conductive pin 301 is equipped with 4 altogether It is a to be respectively and electrically connected to 4 pins (that is, the first pin A1 of side, the second pin A2；And the third pin of the other side B1, the 4th pin B2).In other embodiments, the end of side lamp cap 3 is configured with a hollow conductive pin 301 at this moment one 2 pins of side are shorted or draw a pin to configuring.

Next the circuit diagram of description LED daylight lamp.

Such as the circuit diagram for the LED daylight lamp that Fig. 3 A is 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, compatible circuit 1510 (also referred to as ballast compatible circuit 1510).

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 at direct current.

Filter unit 520 is electrically connected the rectification unit 510 to receive the direct current, to filter the direct current.

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.Compatible circuit 540 includes first unidirectional 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, to allow electric current 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, includes 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, Cathode is electrically connected the anode of diode 512, and the cathode of diode 512 is electrically connected the cathode of diode 511.Above-mentioned two The tie point of pole pipe 512 and 514 is electrically connected second pin A2.

Rectification unit 510 is also possible to 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 capacitor 521.The filter unit 520 receives rectified unit 510 Direct current after rectification, and filter out the radio-frequency component in direct current.Through the filtered direct current of filter unit 520, waveform is One smooth DC waveform.

The filter unit 520 is also possible to other filter circuits that can filter out radio-frequency component (as additionally increased concatenated electricity Sense and another capacitor and in parallel with capacitor 521 be formed by pi type filter), be intended to reach without influence technical solutions of the utility model The function of arriving.

In the present embodiment, LED unit 630 include LED component 632 (be made of several light emitting diodes 202, See Fig. 2A or 2B), LED component 632 may include one by the concatenated branch of several light emitting diodes 202 or a plurality of several The concatenated branch circuit parallel connection of light emitting diode 202, the connection of light emitting diode 202 can be in sequential series or 2 for more Or the more branches first in parallel formed, then branch form in parallel again.With the different power demand of correspondence, provide required Illumination.

In the present embodiment, compatible circuit 540 includes diode 515 and 516, capacitor 541, compatible circuit 1510.Two poles The cathode of pipe 515 is electrically connected the filter unit 520, and anode is electric with the cathode of one end of capacitor 541 and diode 516 respectively Property connection, and the anode of diode 516 is electrically connected the filter unit 520.The other end of capacitor 541 is electrically connected compatible circuit Third pin B1 and four pin B2 is electrically connected in 1510 one end, the other end of compatible circuit 1510.

In the present embodiment, releasing energy circuit 550 includes resistance 551 and 552, branch and filter after the series connection of resistance 551,552 Wave circuit 520 is in parallel, with the flashing for preventing LED daylight lamp from occurring when turning off the light.It releases energy circuit 550 and is also possible to other such as one Or more resistance and other forms release can circuit, the function to be reached without influencing the utility model.Energy is released that is, can be used as As long as the circuit of circuit 550 is able to achieve: one scheduled current of circulation or more can be continued by releasing energy circuit by this when power remove ?.It can be determined according to the current amplitude size of LED component 632 according to this scheduled current.

Fig. 3 B is the circuit diagram of the utility model second embodiment；The difference of Fig. 3 B and Fig. 3 A is: increasing simulation Heater chain 570, at this moment the scheme of Fig. 3 A is equally applicable to the occasion of simulation filament.It is described in embodiment as shown in Figure 3B LED daylight lamp further include: the simulation heater chain 570 being connected between the compatible circuit and the pin；The simulation lamp Silk circuit is used for the simulation filament fever when the external drive signal comes from preheating type ballast.

Embodiment adds two simulation heater chains 570, which respectively contains concatenated two electricity Resistance 573 and 574 and concatenated capacitor 571 and 572, and the tie point of two resistance 573 and 574 couples two capacitor 571 And 572 tie point.When LED daylight lamp is installed on the tube face with pre- heat function (such as: with electric ballast Tube face), in warm, the electric current of AC signal can flow through this two simulation heater chain 570 the resistance 573 and 574, should Capacitor 571 and 572, and achieve the effect that simulate filament.In this way, electric ballast can normally spend filament pre-heating on startup Stage, and guarantee electric ballast and normally start.

Such as the circuit diagram for the LED daylight lamp that Fig. 3 C is 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 510, compatible circuit 540 and simulation heater chain 570.

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 at direct current.

LED module 530 is electrically connected rectification unit, wherein the branch and filter capacitor that are made of several LED components 632 521 branch circuit parallel connection, and correspond to the direct current of filtering and shine；The branch of capacitor 521 and the branch of several LED components 632 are simultaneously The branch that connection is formed is electrically connected one end of discharge tube DB1, and the other end of discharge tube is electrically connected diode 512 and diode 514 anode.

The third pin B1 and the 4th pin B2 of the electric connection of compatible circuit 540 LED daylight lamp 500.

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 capacitor 521 and several LED components, two The anode of pole pipe 513 is connected to the cathode of diode 514；The anode of diode 514 is electrically connected the anode of diode 512 and puts The other end of fulgurite DB1.One end of capacitor 541 is electrically connected the tie point of diode 513 and diode 514, capacitor 541 The other end is electrically connected simulation heater chain 570, which is used to limit the electric current for flowing into LED module 530；And it is connected in parallel on Compatible circuit 1510 on capacitor 541, the compatible circuit 1510 include a MOS switch.

Compatible circuit 1510 is used to detect the size for the electric current for flowing into LED daylight lamp 500, intelligent identification LED daylight lamp 500 apply and are still applied to emergency ballast in electric ballast.

In the present embodiment, simulation heater chain 570, the simulation heater chain is respectively set in the both ends of LED daylight lamp 500 570 are formed by the branch circuit parallel connection of the branch and resistance 573 of capacitor 571.In practical application, an X2 peace is can be selected in capacitor 571 Rule capacitor or 2 ceramic condensers, resistance 573 are connected by 2 (or more), in this way the reliability to improve simulation heater chain. When LED daylight lamp is installed on the tube face with pre- heat function (such as: the tube face with electric ballast), preheated Journey, the electric current of AC signal can flow through the resistance 572, the capacitor 571 of the two simulations heater chain 570, and reach simulation lamp The effect of silk.In this way, electric ballast can normally spend the filament pre-heating stage on startup, and guarantee that electric ballast is normal Starting.Simulation heater chain in certain present embodiment also can be used simulated as shown in Fig. 3 B scheme heater chain or its It simulates filament pre-heating as long as being able to achieve such as negative temperature coefficient resister (NTC).

In other implementations, can also be without using simulation heater chain 570, LED daylight lamp may not apply at this time The occasion of PS type ballast (ballast of pre- heat function).

In other implementations, Thermal Cutoffs is set at least one pin of above-mentioned LED daylight lamp 500.It is logical Often choosing temperature specification is 125 ° (120 °~140 ° of the temperature ranges chosen depending on application), the temperature of rated current 1A or 2A Fuse.

In other implementations, filter capacitor 521 can or string in parallel by multiple single capacitors simultaneously (when such as 4 capacitors, The branch formed of being connected respectively by 2 is in parallel again) it constitutes.

In other implementations, releasing in the both ends parallel connection of the branch of filter capacitor 521 can resistance.Preferably, this is released Energy resistance is made of at least 1 resistance series connection.

Next come in conjunction with Fig. 4 F (Fig. 4 F is the circuit topology that compatible circuit 1510 is parallel to 541 branch of capacitor in Fig. 3 C) (electric current of the output of electric ballast work is larger, usually in 200mA or so for the movement mechanism of detailed description Fig. 3 C scheme； And the electric current exported when emergency ballast work is smaller, typically not greater than 50mA)；When LED daylight lamp 500 is powered, MOS switch 4562 conductings.For that can make the LED daylight lamp compatible electronic ballast and emergency ballast, the compatible circuit 1510 can be described The current limiting capacitance 541 is accessed into circuit when the electric current of external drive signal is greater than predetermined value, and in the external drive signal Electric current be less than predetermined value when be connected.

Specifically, the compatible circuit 1510 may include: control unit 5562, switch unit 5563 and sampling unit 5564；The sampling unit 5564 forms sampled voltage according to the external drive signal；The switch unit 5563 is described Sampled voltage disconnects the compatible circuit 1510 so that the current limiting capacitance 541 is accessed circuit when being greater than preset value, and described The compatible circuit 1510 is connected when being less than preset value in sampled voltage；Described control unit 5562 is used for according to the sampled voltage Control the cut-off and conducting of the switch unit 5563.

Described control unit 5562 may include power branch, IC chip 4561；4th resistance 4563；6th capacitor 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 described 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 The emitter of the collector of the triode 4567, the triode 4567 connects one end of the power branch, the triode The transmitting interpolar of 4567 base stage and the triode 4567 is electrically connected with the 6th capacitor 4565, the triode 4567 base stage is electrically connected one end of the 4th resistance 4563, the other end and the triode of the 4th resistance 4563 4567 transmitting interpolar is electrically connected the sampling unit 5564.

When being 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, give capacitor 4565 to charge via resistance 4563, the voltage of capacitor 4565 increases, and reaches triode 4567 Activation threshold value, triode 4567 is connected, and the end the Vcc voltage of IC chip 4561 is 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 capacitor 541, and the voltage at the end Vcc rises, Reach the threshold value of setting, IC chip 4561 is started to work, and OUT terminal exports trigger signal, and 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 end the Vcc voltage of chip 4561 is dragged down again, and IC chip 4561 does not work at this time, and MOS switch 4562 ends, repeatedly. The periodic conduction and cut-off of MOS switch 4562.

Its end VCC voltage of different IC chips is also different, and in the present embodiment, Vcc operating voltage selects 21V, charging Time is pulled low the time of (blanking voltage, such as 10V) much larger than Vcc voltage.Thus while the conducting in 4562 period of MOS switch/ Cut-off, the identification range of the remote superman's eye of the frequency of conduction and cut-off, so, user is the flashing of imperceptible fluorescent lamp at this time.

In addition, in the present embodiment, capacitor 541 can also flow through LED's by choosing different capacitances to set Electric current.Due to there is capacitor 541, the electric current of LED is flowed through, electric ballast noise (electric ballast and LED daylight lamp can be reduced Match the resonance caused).

When should when emergency ballast, due to emergency electronic ballast output electric current it is smaller (< 50mA or so), resistance 4564 On sampled voltage it is smaller, give capacitor 4565 to charge via resistance 4563, 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 capacitor 541 branch bypass.

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 value of discharge tube DB1 conducting is too small, it is to have compatibility when the matching of certain ballasts Problem cannot successfully light LED daylight lamp.Itself main reason is that: when LED daylight lamp is powered, electric ballast is not also normal Work, the discharge tube of LED daylight lamp have been connected (impedance changes at this time), and electric ballast erroneous judgement load (connects LED daylight lamp) it is abnormal.

Design in this way is advantageous in that:

1.: due to the presence of capacitor 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.: capable of reducing the big problem of part ballast noise, (electric ballast matches the humorous of initiation with LED daylight lamp Vibration).

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

Such as the circuit diagram for the LED daylight lamp that Fig. 3 D is the utility model fourth embodiment.If Fig. 3 D scheme is Fig. 3 C The deformation of embodiment, the difference with Fig. 3 C scheme are:

1.: the embodiment of simulation heater chain 570 is different, 570 groups of the simulation heater chain at 500 both ends of LED daylight lamp At can different (simulating the composition of heater chain 570 in other examples can be identical), the simulation heater chain 570 of side, packet Contain: capacitor 571, capacitor 572, capacitor 575, capacitor 576, resistance 573, resistance 574；Capacitor 571 and the concatenated branch of capacitor 572 With after capacitor 575 and the concatenated branch circuit parallel connection of capacitor 576 with resistance 573 and the concatenated branch circuit parallel connection of resistance 574；Capacitor 571 with The tie point and capacitor 575 of capacitor 572 and the tie point of capacitor 576 are electrically connected.The simulation heater chain 570 of the other side, packet Contain: capacitor 571, capacitor 572, resistance 573；The branch circuit parallel connection of capacitor 571 and capacitor 572 concatenated branch and resistance 573.

2.: the first pin A1, the second pin A2 of side；And on third pin B1, the 4th pin B2 of the other side all It is connected with Thermal Cutoffs, when striking sparks for fluorescent tube, disconnects fluorescent tube in the electric connection of lamp holder.

3.: rectification unit 510 is full wave rectifying unit.

4.: the embodiment of compatible circuit 1510, specifically, the embodiment of compatible circuit is as shown in Figure 4 G, compatible electricity Road 5510；Include: bidirectional triode thyristor 5511, inductance 5512, fuse 5513, bilateral diode 5514, resistance 5515, capacitor 5516, capacitor 5517, resistance 5518；The end A of bidirectional triode thyristor 5511 is electrically connected one end of capacitor 541, bidirectional triode thyristor 5511 other end is electrically connected the end a of inductance 5512, and the end b of inductance 5512 is electrically connected one end of fuse 5513, insurance The other end of silk 5513 is electrically connected the other end of capacitor 541；The triggering end of bidirectional triode thyristor 5511 is electrically connected two-way two pole One end of pipe 5514, the other end of bilateral diode 5514 are electrically connected one end of resistance 5518 and one end of capacitor 5516, electricity Hold the end a of 5516 end B electric connection inductance 5512, the end b of resistance 5518 is electrically connected one end and the capacitor of resistance 5515 5517 one end, the other end of resistance 5515 are electrically connected the end A of bidirectional triode thyristor 5511；The end b of capacitor 5517 is electrically connected The end B of capacitor 5516 and the end a of inductance 5512.

The movement mechanism that Fig. 3 D scheme is described below is connect,

It applies in the occasion of electric ballast, the alternating current of electric ballast work output high-frequency and high-voltage flows through capacitor 541。

It applies in the occasion of emergency ballast, if electric current flows through capacitor 541 when emergency rectifier output is alternating current； If output is direct current, DC voltage is added in the both ends of capacitor 541 when after energization, and capacitor 5517 is filled by resistance 5515 Electricity, capacitor 5516 charges by resistance 5518, after continuing for some time, capacitor 5517, capacitor 5516 voltage gradually rise Height to more than bilateral diode 5514 (sometimes referred to as two-way trigger tube) threshold value, bilateral diode 5514 trigger after, it is two-way can The triggering end (sometimes referred to as gate pole) of control silicon 5511 flows through a constant current, and bidirectional triode thyristor 5511 is connected, to bypass the capacitor 541。

In above-described embodiment, inductance 5512 has the function of inhibiting current break, and the virtual value of electric current, Jin Erke can be improved Improve the brightness of fluorescent tube.

In above-described embodiment, Thermal Cutoffs preferably chooses 125 ° between 100 °~140 °.

In other examples, fuse 5513 can be omitted.Inductance 5512 can also be omitted.

In above-described embodiment, the inductance value of inductance 5512 between 2mH~15mH. Thermal Cutoffs between 100 °~140 °, compared with Good selection 2mH~10mH.Inductance value chooses 8mH in the present embodiment.

In the embodiment of other compatible circuits, resistance 5515 and capacitor 5517 can be omitted, at this moment the b of resistance 5518 is electrical Connect the end A of bidirectional triode thyristor 5511.Or resistance 5518 and capacitor 5516 are omitted, at this moment the other end of bilateral diode electrically connects Connect one end of capacitor 5517.

Design in this way is advantageous in that:

1.: due to the presence of capacitor 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.: capable of reducing the big problem of part ballast noise, (electric ballast matches the humorous of initiation with LED daylight lamp Vibration).

4.: LED daylight lamp can be successfully lighted (when such as 120V) when improving electrical network low voltage.

In other implementations, in compatible circuit 540, current limiting capacitance 541 and compatible circuit 1510 can be also omitted, such as Shown in Fig. 3 E.At this moment merely with realization Delayed conducting for discharge tube DB1, (voltage being added on discharge tube DB1 reaches design When threshold value, discharge tube DB1 conducting.Realize compatible different types of ballast.

As shown in FIGURE 3 E, the difference with Fig. 3 C scheme is:

1.: the embodiment of simulation heater chain 570 is different, simulates heater chain 570, includes: capacitor 571, capacitor 572, resistance 573, the branch circuit parallel connection of capacitor 571 and the concatenated branch of capacitor 572 and resistance 573.Certainly simulation heater chain 570 Other kinds of simulation heater chain can be used, also to reach the function of simulation filament.

2.: in compatible circuit 540, capacitor 541 and compatible circuit 1510 are omitted, such circuit topology is simple, improves LED days The reliability of light lamp；At this moment the half-wave rectifying circuit that diode 513 and diode 514 form in compatible circuit 540, can also be by, As full-wave rectifying circuit substitutes.

3.: rectification unit 510 is full wave rectifying unit.

At this moment discharge tube DB1 can use Fig. 4 A, and scheme shown in Fig. 4 B, Fig. 4 C, Fig. 4 E substitutes.

The LED light of the program can be used for straight pipe type lamp, it may also be used for PLL type (it is horizontal slotting that H-type puts down 4 needles) LED light.

Design in this way is advantageous in that:

1.: due to omitting capacitor 541, the pipe pressure of LED daylight lamp 500 can be reduced under the conditions of same luminous flux, is improved Compatibility when there is the electric ballast application of preheating (PS) type.In PS ballast occasion, if ballast detects The voltage of (LED daylight lamp) fluorescent tube is high, can be mistaken for LED daylight lamp starting protection extremely, cannot light LED daylight lamp.

2.: sampling program LED daylight lamp 500 can be used to be matched with the rectifier of specified model, and LED daylight is lighted in raising Lamp purpose.

Next, compatible circuit 1510 in the embodiment of description Fig. 3 A-B, the electricity of the preferred embodiment of compatible circuit 1510 Road is as shown in figs. 4a-4e.

Compatible circuit 1510 shown in Fig. 4 A includes: bidirectional triode thyristor TR, discharge tube 561；1 end of discharge tube 561 is connected to The end a, 2 ends are connected to the triggering end of bidirectional triode thyristor TR, and 2 ends of bidirectional triode thyristor TR are connected to the end b；When 561 both ends of discharge tube Voltage reach the threshold value of setting, discharge tube 561 is connected, and triggers bidirectional triode thyristor TR, and at this moment bidirectional triode thyristor TR conducting is (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.

Compatible circuit 1510 shown in Fig. 4 B includes: bidirectional triode thyristor TR, discharge tube 561,562, capacitor 563；Discharge tube 561 1 end is connected to the end a, and 2 ends are connected to 1 end of discharge tube 562 and 1 end of capacitor 563；2 ends of discharge tube 562 are connected to 2 ends of the triggering end of bidirectional triode thyristor TR, capacitor 563 are connected to the end b.When the voltage at 561 both ends of discharge tube reaches the threshold of setting Value, discharge tube 561 are connected, at this moment 563 charged state of capacitor, when the voltage at 562 both ends of discharge tube reaches the threshold triggers of setting Bidirectional triode thyristor TR, at this moment bidirectional triode thyristor TR conducting (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；Capacitor 563 range, 2~50nF choose 10nF in the present embodiment.The voltage threshold of discharge tube 561 is greater than discharge tube in the present embodiment 562 voltage threshold.

Compatible circuit 1510 shown in Fig. 4 C is with Fig. 4 B in difference: replacing discharge tube 562 with bilateral diode 564.Ginseng It scolds bright: pressure-resistant 600~1300V of range of bidirectional triode thyristor TR in the present embodiment；600V is selected in the present embodiment；Discharge tube 561 Voltage threshold range 200V~600V；Preferably choose between 300V~440V；The present embodiment chooses 340V；Bilateral diode 564 voltage threshold range 20V~100V；Preferably choose between 30V~70V；The present embodiment chooses 68V；The model of capacitor 563 It encloses, 2~50nF, chooses 10nF in the present embodiment.The voltage threshold of discharge tube 561 is greater than bilateral diode 564 in the present embodiment Voltage threshold.

Compatible circuit 1510 shown in Fig. 4 D is in difference with Fig. 4 A: eliminating bidirectional triode thyristor TR.

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

Compatible circuit 1510 shown in Fig. 4 E is with Fig. 4 B in difference: 2 ends of discharge tube 561 and bilateral diode 564 Resistance 565. is added between 1 end, and 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 capacitor 563,2~50nF choose 10nF in the present embodiment.

As the deformation of the present embodiment, resistance 565. can also be 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 solve in background cannot at electrical network low voltage (when lower than 120V) The problem of normal starting LED daylight lamp.Simultaneously by the topology of Fig. 4 A-E can be seen that the utility model proposes scheme selection compared with Few component greatly improves the reliability of system in this way.

Compatible circuit 1510 shown in Fig. 4 F includes: rectification unit 5561, control unit 5562, switch unit 5563 and adopts Sample unit 5564.

Rectification unit 5561 is used to rectify the electric current for flowing into LED daylight lamp, and provides electric energy to control unit 5562.

Rectification unit 5561 is the rectification circuit being made of 4 diodes, wherein rectification unit 5561 includes diode 515, diode 516, diode 517, diode 518；The cathode of diode 515 is electrically connected the cathode of diode 517, two poles The cathode of the anode electric connection diode 516 of pipe 515, the anode of the anode electric connection diode 518 of diode 516, two The cathode of pole pipe 518 is electrically connected the anode of diode 517；The tie point and diode 517 of diode 515 and diode 516 The both ends of capacitor 541 are electrically connected with the tie point of diode 518.

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

The OUT terminal of IC chip 4561 is electrically connected the grid (pole G) of the MOS switch 4562 of switch unit 5563, IC chip 4561 end GND, the end OVP and the end CS is all grounded, and the end VCC of IC chip 4561 is 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 capacitor 4565, and the base stage of triode 4567 is electrically connected resistance 4563 One end, the transmitting interpolar of the other end of resistance 4563 and triode 4567 is electrically connected sampling unit 5564.

Sampling unit 5564 includes a sampling resistor 4564.

Switch unit 5563, includes a MOS switch 4562, and the grid (pole G) of MOS switch 4562 is electrically connected IC chip 4561 OUT terminal, drain electrode (pole D) are electrically connected the anode of diode 519, and source electrode (pole S) is electrically connected to sampling resistor 4564 One end, sampling resistor 4564 the other end ground connection.

In other examples, it is arranged between electrical property and the anode of diode 519 in the drain electrode of MOS switch 4562 (pole D) Resistance.

In other examples, MOS switch can choose p-type MOS switch.

In other embodiments, the compatible circuit also can be configured as: when the external drive signal is exchange letter Number when, the electric current that the external communication driving signal generates flows through the current limiting capacitance 541.Further, the compatible circuit 5510 are configured as: when the external drive signal is DC signal, the compatible circuit is by the external drive signal Triggering and conducting, therefore current limiting capacitance 541 described in the current bypass of external drive signal generation.

As shown in Figure 4 G.Fig. 4 G is the embodiment of compatible circuit in Fig. 3 D.The compatible circuit 5510 may include double To silicon-controlled 5511, bilateral diode 5514, the 7th capacitor 5516, the 5th resistance 5518；The A of the bidirectional triode thyristor 5511 End is electrically connected one end of the current limiting capacitance 541, and the other end of the bidirectional triode thyristor 5511 is electrically connected the 7th electricity Hold 5516 one end and the other end of the current limiting capacitance 541；The triggering end of the bidirectional triode thyristor 5511 is electrically connected institute State one end of bilateral diode 5514；The other end of the bilateral diode 5514 is electrically connected the one of the 5th resistance 5518 The other end of end and the 7th capacitor 5516；The other end of 5th resistance 5518 is electrically connected the 7th capacitor 5516 one end and the end A of the bidirectional triode thyristor 5511.

Wherein, it can be in series between the other end of the 5th resistance 5518 and the end A of the bidirectional triode thyristor 5511 6th resistance 5515；Can be in series between the other end of 5th resistance 5518 and one end of the 7th capacitor 5516 Eight capacitors 5517.

Inductance 5512 can be in series between the other end and the current limiting capacitance 541 of the bidirectional triode thyristor 5511；Institute The other end for stating bidirectional triode thyristor 5511 is electrically connected one end of the inductance 5512, and the other end of the inductance 5512 electrically connects Connect the other end of the current limiting capacitance 541；One end of 7th capacitor 5516 is electrically connected one end of the inductance 5512.

The compatible circuit 5510 can also include the other end and the current limiting capacitance 541 for being series at the inductance 5512 The other end between protective device 5513；Electric current of the protective device for inductance 5512 to flow into opens when being more than rated current Dynamic protection.

In Fig. 4 G illustrated embodiment, compatible circuit 5510 includes: bidirectional triode thyristor 5511, inductance 5512, fuse 5513, bilateral diode 5514, resistance 5515, capacitor 5516, capacitor 5517, resistance 5518；The end the A electricity of bidirectional triode thyristor 5511 Property connection capacitor 541 one end, the other end of bidirectional triode thyristor 5511 is electrically connected the end a of inductance 5512, the b of inductance 5512 End is electrically connected one end of fuse 5513, and the other end of fuse 5513 is electrically connected the other end of capacitor 541；It is two-way controllable The triggering end of silicon 5511 is electrically connected one end of bilateral diode 5514, and the other end of bilateral diode 5514 is electrically connected resistance 5518 one end and one end of capacitor 5516, the end B of capacitor 5516 are electrically connected the end a of inductance 5512, the end the b electricity of resistance 5518 Property one end of connection resistance 5515 and one end of capacitor 5517, the other end of resistance 5515 be electrically connected bidirectional triode thyristor 5511 The end A；The end b of capacitor 5517 is electrically connected the end B of capacitor 5516 and the end a of inductance 5512.

It needing to point out, in his above-mentioned embodiment, " electric connection " of description can be direct electrical connection, It can be connected for electric signal." signal " can be regarded as " signal " in his above-mentioned embodiment.

It needs to point out, in other embodiments, for same root LED daylight lamp, " lighting in circuit Circuit module ", " release can circuit ", " compatible circuit ", " ballast compatible circuit ", " simulation heater chain ", " Thermal Cutoffs ", In the features such as " current limiting capacitance ", " inductance ", one or more of feature combinations can be only included.

That is, features described above can be made to arbitrary permutation and combination, and it is used for the improvement of LED daylight lamp.

In addition, it is necessary to point out, in other embodiments, for LED light, compatible circuit is located at LED light The change of the various features such as internal or external, " connection type of LED component " and LED lamp structure change.

Herein cited any digital value all include between lower limit 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 an 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 68,43 to 51,30 to 32 is equivalent.For the value less than 1, suitably think a unit be 0.0001,0.001,0.01, 0.1.These are only intended to the example clearly expressed, it is believed that the numerical value enumerated between minimum and peak owns It may combine and be all expressly set forth in a similar manner in the specification.

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 cover that " 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.Describing combined term " substantially by ... constitute " should include identified element, ingredient, component or step and reality 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 constituted.Here by using term " can with ", it is intended to illustrate that " can with " includes described any 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 to 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 provided example all will be aobvious and easy for a person skilled in the art See.Therefore, the range of this introduction should not be determined referring to foregoing description, but should referring to appended claims and this The full scope of the equivalent that a little claims are possessed determines.For comprehensive purpose, all articles and with reference to including special The disclosure of benefit 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 of utility model theme.

Claims (20)

1. a kind of LED daylight lamp characterized by comprising

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

LED module (530) is used to receive the external drive signal to shine；

Current limiting capacitance (541) is coupled to the LED module (530) and for adjusting the electric current for flowing through the LED module (530)； And

Compatible circuit (1510,5510)；The compatible circuit (1510,5510) is connected in parallel with the current limiting capacitance (541), and It can make the compatible different types of ballast of the LED daylight lamp according to the external drive signal.

2. LED daylight lamp as described in claim 1, which is characterized in that the LED daylight lamp further include:

The simulation heater chain (570) being connected between the compatible circuit and the pin；The simulation heater chain (570) For the simulation filament fever when the external drive signal comes from preheating type ballast.

3. LED daylight lamp as claimed in claim 2, which is characterized in that the simulation heater chain (570) includes first capacitor (571), first resistor (573)；The first capacitor (571) is in parallel with the first resistor (573).

4. LED daylight lamp as claimed in claim 2, which is characterized in that the simulation heater chain (570) includes first capacitor (571), the second capacitor (572) and first resistor (573)；The first capacitor (571) and the second capacitor (572) are concatenated Branch is in parallel with the first resistor (573) to form the simulation heater chain.

5. LED daylight lamp as claimed in claim 2, which is characterized in that the simulation heater chain (570) includes: concatenated First capacitor (571) and the second capacitor (572) and concatenated first resistor (573) and second resistance (574)；Described first Resistance (573) and the tie point of second resistance (574) couple the connection of the first capacitor (571) and the second capacitor (572) Point.

6. LED daylight lamp as claimed in claim 2, which is characterized in that the simulation heater chain (570) includes: the first electricity Hold (571), the second capacitor (572), third capacitor (575), the 4th capacitor (576)；

First capacitor (571) and the second capacitor (572) concatenated branch are connected with third capacitor (575) and the 4th capacitor (576) Branch circuit parallel connection；The tie point and third capacitor (575) and the 4th capacitor of the first capacitor (571) and the second capacitor (572) (576) tie point is electrically connected.

7. the LED daylight lamp as described in claim 1-6 is any, which is characterized in that the compatible circuit (1510) can be described The current limiting capacitance (541) are accessed into circuit when the electric current of external drive signal is greater than predetermined value, and are believed in the external drive Number electric current be less than predetermined value when be connected.

8. the LED daylight lamp as described in claim 1-6 is any, which is characterized in that the LED module (530) includes LED unit (630), the LED daylight lamp further includes the first discharge tube (561, DB1), first discharge tube (561, DB1) and the limit Galvanic electricity holds (541) or the LED unit (630) series connection.

9. LED daylight lamp as claimed in claim 8, which is characterized in that the LED daylight lamp further includes bidirectional triode thyristor (TR)；The first end of first discharge tube (561) connects the first end of the bidirectional triode thyristor (TR)；First discharge tube (561) second end connects the triggering end of the bidirectional triode thyristor (TR).

10. LED daylight lamp as claimed in claim 9, which is characterized in that the LED daylight lamp further includes the second discharge tube (562), the 5th capacitor (563)；Second discharge tube (562) is series at second end and the institute of first discharge tube (561) Between the triggering end for stating bidirectional triode thyristor (TR)；The first end of 5th capacitor (563) connects first discharge tube (561) Second end, the second end of the 5th capacitor (563) connects the second end of the bidirectional triode thyristor (TR).

11. LED daylight lamp as claimed in claim 10, which is characterized in that the LED daylight lamp further includes 3rd resistor (565)；The 3rd resistor (565) be electrically connected at first discharge tube (561) second end and second discharge tube (562) between first end.

12. LED daylight lamp as claimed in claim 9, which is characterized in that the LED daylight lamp further includes bilateral diode (564), the 5th capacitor (563)；The bilateral diode (564) is series at second end and the institute of first discharge tube (561) Between the triggering end for stating bidirectional triode thyristor (TR)；The first end of 5th capacitor (563) connects first discharge tube (561) Second end, the second end of the 5th capacitor (563) connects the second end of the bidirectional triode thyristor (TR).

13. LED daylight lamp as claimed in claim 7, which is characterized in that the compatible circuit (1510) includes: control unit (5562), switch unit (5563) and sampling unit (5564)；The sampling unit (5564) is according to the external drive signal Form sampled voltage；The switch unit (5563) disconnects the compatible circuit when the sampled voltage is greater than preset value (1510) the current limiting capacitance (541) are accessed circuit, and the compatibility is connected when the sampled voltage is less than preset value Circuit (1510)；Described control unit (5562) is used to control the cut-off of the switch unit (5563) according to the sampled voltage With conducting.

14. LED daylight lamp as claimed in claim 13, it is characterised in that: described control unit (5562) include power branch, IC chip (4561)；4th resistance (4563)；6th capacitor (4565)；Triode (4567)；The both ends of the power branch point It is not electrically connected the both ends of the current limiting capacitance (541)；The power branch is used to provide the described the driving of IC chip (4561) Power supply；

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) and the transmitting interpolar of the triode (4567) are electrically connected with the 6th capacitor (4565), described The base stage of triode (4567) is electrically connected one end of the 4th resistance (4563), the other end of the 4th resistance (4563) The sampling unit (5564) is electrically connected with the transmitting interpolar of the triode (4567).

15. the LED daylight lamp as described in claim 1-6 is any, which is characterized in that compatible circuit (the 1510,5510) quilt It is configured that the electric current that the external drive signal generates flows through the current limliting when the external drive signal is AC signal Capacitor (541).

16. LED daylight lamp as claimed in claim 15, it is characterised in that: the compatible circuit (5510) is configured as: working as institute When to state external drive signal be DC signal, the compatible circuit is therefore described outer by the external drive signal triggering and conducting Current limiting capacitance (541) described in the current bypass that portion's driving signal generates.

17. LED daylight lamp as claimed in claim 16, which is characterized in that the compatible circuit (5510) includes two-way controllable Silicon (5511), bilateral diode (5514), the 7th capacitor (5516), the 5th resistance (5518)；The bidirectional triode thyristor (5511) The end A be electrically connected one end of the current limiting capacitance (541), described in the other end of the bidirectional triode thyristor (5511) is electrically connected One end of 7th capacitor (5516) and the other end of the current limiting capacitance (541)；The triggering of the bidirectional triode thyristor (5511) End is electrically connected one end of the bilateral diode (5514)；Described in the other end of the bilateral diode (5514) is electrically connected One end of 5th resistance (5518) and the other end of the 7th capacitor (5516)；The other end of 5th resistance (5518) It is electrically connected one end of the 7th capacitor (5516) and the end A of the bidirectional triode thyristor (5511).

18. LED daylight lamp as claimed in claim 17, it is characterised in that: the other end of the 5th resistance (5518) and institute It states and is in series with the 6th resistance (5515) between the end A of bidirectional triode thyristor (5511)；

The 8th capacitor is in series between the other end of 5th resistance (5518) and one end of the 7th capacitor (5516) (5517)。

19. the LED daylight lamp as described in claim 17 or 18, it is characterised in that: the bidirectional triode thyristor (5511) it is another Inductance (5512) are in series between end and the current limiting capacitance (541)；The other end of the bidirectional triode thyristor (5511) electrically connects One end of the inductance (5512) is connect, the other end of the inductance (5512) is electrically connected the another of the current limiting capacitance (541) End；One end of 7th capacitor (5516) is electrically connected one end of the inductance (5512).

20. LED daylight lamp as claimed in claim 19, it is characterised in that: the compatible circuit (5510) further includes being series at Protective device (5513) between the other end of the inductance (5512) and the other end of the current limiting capacitance (541)；The guarantor Starting protection when electric current of the protection unit for inductance (5512) to flow into is more than rated current.