CN208074616U - Led daylight lamp - Google Patents

Abstract

The utility model discloses a kind of LED daylight lamp, including：Fluorescent tube (1), end have the pin for inputting external drive signal；For luminous LED module (530)；With the current limiting capacitance (541) of the LED module (530) coupling；The current limiting capacitance (541) is for limiting the electric current for flowing into the LED module (530)；The ballast compatible circuit (7510) in parallel with the current limiting capacitance (541)；The ballast and current circuit (7510) are used to make the LED daylight lamp compatible electronic ballast and emergency ballast according to the external drive signal；The ballast compatible circuit (7510) has inductance (7512)；The protective device (7513) being series between the current limiting capacitance (541) and the LED module (530) on main line；The protective device can the temperature of inductance (7512) be more than the protective device (7513) threshold value when starting protection, circuit is disconnected.The LED daylight lamp can block continuing for abnormal work and continuing for arcing, so that it is guaranteed that will not cause fire.

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 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 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, abbreviation IS type) electronics Ballast, preheating start-up type (Program Start, abbreviation PS type) two kinds of electric ballast.Electric ballast has resonance electricity Road, driving design are matched with the load characteristic of fluorescent lamp, i.e., electric ballast is capacitive component before lighting in fluorescent lamp, And after lighting it is resistive device, corresponding startup program is provided, and fluorescent lamp is allow correctly to light.And LED is non-thread Property component, it is entirely different with the characteristic of traditional fluorescent lamp.The forward voltage of LED inversely, such as uses constant pressure with temperature Mode, when LED long-term works or due to environment temperature rise junction temperature T2 is raised to by T1 when, LED will be increased sharply by electric current, be more than Its rated value, the increase of electric current further means that the increase of fever, if heat cannot shed in time, electric current will increase without limitation Go down, until LED is burnt.Be not in then such case according to current constant mode, the raising of temperature only results in modulating voltage It reduces, the loss of system is reduced, can't be impacted to the service life of LED instead.Therefore the LED generally use constant currents of mainstream Mode, the electric current avoid the reduced service life for leading to LED because electric current is excessive within the rated value of LED.

Ballast, in certain occasions due to the requirement of fire-fighting, is equipped with emergency ballast in addition to above-mentioned electric ballast Emergency lighting；Output high frequency (typically not greater than 20KHz) pulse-type current, electric current and electron type when emergency ballast works The electric current of the output of ballast is different, and (size of current exported when usual emergency ballast work is no more than 50mA, and electronics town The electric current of device work output is flowed in 200mA or so).Since the difference of drive signal is compatible to the LED daylight lamp of electric ballast Lamp possibly can not be compatible with emergency ballast, and be unfavorable for the large-scale popularization and application of LED daylight lamp.

The Thermal Cutoffs of the circuit of existing LED light would generally be connected on the branch of circuit with switching switching component or inductance Lu Zhong causes different such that once component abnormal work or elsewhere arcing, the reaction of Thermal Cutoffs is slow The meeting often to work continues for some time, to easily cause fire.In addition, the FPC lamp plates of LED light have with the pcb board in lamp cap When rosin joint can occur, and rosin joint is easy to bring Arcing problem, due to the position problems of above-mentioned Thermal Cutoffs, to be easy Lead to continuing for arcing, so as to cause fire.

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 it is possible to 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 lamps 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, including：

Fluorescent tube 1, end have the pin for inputting external drive signal；

For luminous LED module 530；

The current limiting capacitance 541 coupled with the LED module 530；The current limiting capacitance 541 flows into the LED for limiting The electric current of module 530；

The compatible circuit 7510/1510 in parallel with the current limiting capacitance 541；The compatible circuit 7510/1510 is used for root The LED daylight lamp is set to be compatible with different types of ballast according to the external drive signal；7510/1510 quilt of the compatible circuit It is configured to：When the external drive signal is AC signal, the electric current that the external drive signal generates flows through the current limliting Capacitance 541；

The protective device 7513 being series between the current limiting capacitance 541 and the LED module 530 on main line；The guarantor Protection unit be used for when thereon temperature or electric current reach the threshold value of setting when be triggered or starting protection.

Preferably, the compatible circuit 7510/1510 is configured as：When the external drive signal is DC signal When, the compatible circuit 7510/1510 is by the external drive signal triggering and conducting, so that the external drive signal generates Current bypass described in current limiting capacitance 541.

Preferably, the compatible circuit 7510/1510 is set on circuit board, and the protective device 7513 is set to and leans on The position of the nearly compatible circuit 7510/1510, the generation for avoiding arcing.

Preferably, the compatible circuit 7510/1510 includes bidirectional triode thyristor 5511/7511, bilateral diode 5514/ 7514, the first capacitance 5516/7516, first resistor 5518/7518；The ends A of the bidirectional triode thyristor 5511/7511 are electrically connected The other end of one end of the current limiting capacitance 541, the bidirectional triode thyristor 5511/7511 is electrically connected first capacitance The other end of 5516/7516 one end and the current limiting capacitance 541；The triggering end electricity of the bidirectional triode thyristor 5511/7511 Property connects one end of the bilateral diode 5514/7514；The other end of the bilateral diode 5514/7514 is electrically connected institute State one end of first resistor 5518/7518 and the other end of first capacitance 5516/7516；The first resistor 5518/ 7518 other end is electrically connected one end and the bidirectional triode thyristor 5511/7511 of first capacitance 5516/7516 The ends A.

Preferably, the compatible circuit 7510/1510 has inductance 7512/5512, and the inductance being capable of afterflow.

Preferably, the inductance 5512/7512 is coupled to the other end of the bidirectional triode thyristor 5511/7511 and the limit Galvanic electricity is held between 541 other end；The other end of the bidirectional triode thyristor 5511/7511 is electrically connected the inductance 5512/ 7512 one end, the other end of the inductance 5512/7512 are electrically connected the other end of the current limiting capacitance 541；Described first One end of capacitance 5516/7516 is electrically connected one end of the inductance 5512/7512.

Preferably, when electric current of the protective device 7513 for the inductance 5512/7512 to flow into is more than rated current Starting protection.

Preferably, the ends A of the other end of the first resistor 5518/7518 and the bidirectional triode thyristor 5511/7511 it Between be in series with second resistance 5515/7515；

It is in series between the other end of the first resistor 5518/7518 and one end of first capacitance 5516/7516 Second capacitance 5517/7517.

Preferably, the capacitance of second capacitance 5517/7517 is more than the capacitance of first capacitance 5516/7516.

Preferably, the capacitance of first capacitance 5516/7516 chooses 1nf~10nf；Second capacitance 5517/7517 Capacitance choose 100nf~1000nf.

Preferably, the inductance 7512 is packaged into rectangular parallelepiped structure；The tail portion of the protective device and the inductance 7512 Magnetic core height is concordant.

Preferably, the distance between the inductance 7512 and the protective device 7513 are less than 2 millimeters.

Preferably, the protective device 7513 is Thermal Cutoffs；The protective device 7513 is touched when temperature rises to threshold value Fusing of sending out Thermal Cutoffs described.

Preferably, the threshold value is 100 degrees Celsius -130 degrees Celsius.

Preferably, the inductance value of the inductance 7512 is 2mH~8mH.

Preferably, the end of the fluorescent tube 1 is equipped with lamp cap 3；It is equipped in the lamp cap 3 and to be electrically connected with the pin PCB plates；The compatible circuit 7510/1510 is set on the pcb board；The pcb board is equipped with pad；The protection dress 7513 are set close to the pad to be arranged.

Preferably, the LED daylight lamp includes lamp plate 2, and the LED module 530 includes the LED being set on the lamp plate Component 632；The pcb board is electrically connected by the pad and the lamp plate 2.

Preferably, the lamp plate 2 is flexible PCB.

Preferably, isolation channel is equipped between the electronic component on the pcb board on the pad and pcb board.

Preferably, the quantity of the isolation channel is two；And two isolation channels are by part pcb board interval thus mutually not Connection；The part pcb board is located at the pad and the electronic component spacing distance maximum position on the pcb board.

Preferably, the pad includes being set to pcb board one end first part pad and second part pad；It is described Short circuit setting between first part's pad and second part pad.

The scheme for the LED daylight lamp that the application proposes can have the following advantages：

①：Can reduce electric ballast noise (noise matched with LED daylight lamp by electric ballast cause it is humorous It shakes generation)；

②：The compatibility emergency type ballast of the various types of electrical ballasts of compatibility and close friend that can be friendly；

③：LED daylight lamp can normally be started in electrical network low voltage；And/or

④：Circuit protects dress by sealing in protective device (such as Thermal Cutoffs) in circuit major loop (main line) It is seated in and is easily abnormal component (inductance (7512)) nearby and easily near arcing point of origin (pad), once i.e. component Abnormal work or elsewhere arcing, protective device (such as Thermal Cutoffs) will disconnect rapidly, block abnormal work It is lasting and arcing to continue, so that it is guaranteed that fire will not be caused.

With reference to following description and accompanying drawings, the particular implementation of the utility model is disclosed in detail, specifies this practicality Novel principle can be in a manner of adopted.It should be understood that the embodiment of the utility model in range not thus by Limitation.In the range of the spirit and terms of appended claims, the embodiment of the utility model includes many changes, modifications With it is equivalent.

The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more It is used in a other embodiment, it is combined with the feature in other embodiment, or substitute the feature in other embodiment.

It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when being used herein, but simultaneously It is not excluded for the presence or additional of one or more other features, one integral piece, step or component.

Description of the drawings

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, Other drawings may also be obtained based on these 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 stereogram exploded view；

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

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

Fig. 5 is the oscillogram containing DC offset voltage in the output signal of electric ballast.

Specific implementation mode

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, technical solutions in the embodiments 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 the every other embodiment that technical staff is obtained without making creative work 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 ", " right side " and similar statement for illustrative purposes only, are not offered as being unique embodiment.

Unless otherwise defined, all of technologies and scientific terms used here by the article is led with the technology for belonging to the utility model The normally understood meaning of 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 relevant Listed Items.

Please refer to Fig. 1-Fig. 2 B, a kind of LED daylight lamp, including：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 is affixed on fluorescent tube by the end of glue sticking and fluorescent tube 2, lamp plate 2 by bonding agent 1 inner surface.Wherein fluorescent tube 1 can be the peripheral framework of elongate, using plastic material fluorescent tube or glass material fluorescent tube, originally Embodiment using tool strengthening section glass lamp, to avoid traditional glass fluorescent tube it is easily rupturable and rupture cause by electric leakage touch Electrification and plastic lantern tube capacity problem 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 The U-shaped LED daylight lamp that body is formed by connector (connector can also be the telescopic applications to cope with different).

With continued reference to Fig. 2A, 2B, lamp plate 2 is equipped with several light emitting diodes 202 (can also be expressed as LED unit), Several light emitting diode composition LED components 632 (LED component can also be expressed as light emitting diode or light emitting diode group), Lamp cap 3 is embedded with lamp circuit module 5 (also referred to as power module).

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 the lamp cap 3 at LED daylight lamp both ends respectively.Or lighting Part (or whole) component of circuit module 5 is equipped on lamp plate 2, can optimize the ruler of the circuit board of lamp circuit module 5 in this way It is very little, the further size for optimizing lamp cap.Lamp circuit module 5 is electrically connected with lamp plate 2.

Next combine Fig. 2A, Fig. 2 B and Fig. 3 A-F, description lamp circuit module 5 (also referred to as electric in certain embodiments Source 5) it is topological with the connection of lamp plate 2 and LED component 632.It please refers to shown in Fig. 2A, Fig. 2 B, the end of the lamp cap 3 of LED daylight lamp Configured with hollow conductive pin 301 (solid conductive pin also can).With reference to figure 2A, Fig. 2 B and Fig. 3 A-F are combined, hollow conductive pin 301, 4 pins are respectively and electrically connected to (that is, the first pin A1 of side, the second pin A2 equipped with 4 altogether；And the of the other side Three pin B1, the 4th pin B2).

In other embodiments, the end of side lamp cap 3 is configured with a hollow conductive pin 301, and at this moment the 2 of side connect Foot short circuit draws a pin to by setting.

Next the electrical block diagram of description LED daylight lamp.

Such as the circuit diagram for the 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, including rectification unit 510, filtering Unit 520, compatible circuit 540, releasing can circuit 550.

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, and the direct current is 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.When compatible circuit 540 works, electric current Path such as the first unidirectional current path I1 and the second unidirectional current path I2.First unidirectional current path I1 allows electric current by LED Unit 630 flows to one of third pin B1 and four pin B2.Second unidirectional current path I2, to allow electric current to be connect by third One of foot B1 and four pin B2 flow to filter unit 520.

In the present embodiment, rectification unit 510 is a bridge rectifier, including 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.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 electricity Property connection diode 512 anode, and the cathode of diode 512 is electrically connected the cathode and filter unit 520 of diode 511 The other end.The tie point of diode 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.520 filtered direct current of filtered unit, waveform are One smooth DC waveform.

The filter unit 520, which can also be other, can filter out the filter circuit of radio-frequency component (as additionally increased concatenated electricity Sense and another capacitance and in parallel with capacitance 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 can include one by 202 concatenated branch of several light emitting diodes or a plurality of several The connection of 202 concatenated branch of light emitting diode (branch is in parallel again), light emitting diode 202 can be for more sequentially Series connection or the 2 or more branches first in parallel formed, the then branch concatenated form again.With the different power demand of correspondence, Illumination needed for providing.

In the present embodiment, compatible circuit 540 includes diode 515 and 516, capacitance 541, ballast compatible circuit 1510. The cathode of diode 515 is electrically connected the filter unit 520, anode the moon with one end of capacitance 541 and diode 516 respectively Pole is electrically connected, and the anode of diode 516 is electrically connected the filter unit 520.The other end of capacitance 541 is electrically connected ballast Third pin B1 and the 4th pin is electrically connected in the other end of one end of compatible circuit 1510, ballast compatible circuit 1510 B2。

In the present embodiment, it includes resistance 551 and 552, the branch after the series connection of resistance 551,552 and filter to release energy circuit 550 Wave circuit 520 is in parallel, with the flicker for preventing LED daylight lamp from occurring when turning off the light.It can also be other such as one to release energy circuit 550 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 can be realized：One scheduled current of circulation or more can be continued by releasing energy circuit by this when power remove ?.

Fig. 3 B are the circuit diagram of the LED daylight lamp of the utility model second embodiment；The difference of Fig. 3 B and Fig. 3 A exists In：Increase simulation heater chain 570, at this moment the scheme of Fig. 3 B may be used on the occasion of PS type ballasts.

Embodiment adds two simulation heater chains 570, which respectively contains concatenated two electricity Resistance 573 and 574 branch and concatenated capacitance 571 and 572 branch, and two resistance 573 and 574 tie point coupling The tie point of two capacitance 571 and 572.When LED daylight lamp is installed on the tube face with pre- hot function (such as：With electricity The tube face of sub-ballast), in warm, the electric current of AC signal can flow through the resistance of the two simulations heater chain 570 573 and 574, the capacitance 571 and 572, and achieve the effect that simulate filament.In this way, electric ballast on startup can be normal The filament pre-heating stage is spent, and ensures ballast and normally starts.

Such as the circuit diagram for the LED daylight lamp that Fig. 3 C are the utility model 3rd embodiment.LED daylight lamp 500 includes： LED modules 530；And the lamp circuit module for making LED module lighting；Lamp circuit module, including 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 capacitance 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 branches, and the other end of discharge tube branch is electrically connected diode 512 The anode of anode and diode 514.

In other implementations, the also parallel connection of the branch of capacitance 521 release can circuit (with released in Fig. 3 A can circuit 550, This is no longer described in detail).

Compatible circuit 540 through simulate heater chain 570 be electrically connected the LED daylight lamp 500 third pin B1 and this Four pin B2.

Compatible circuit 540 includes diode 513, diode 514, capacitance 541 (also referred to as current limiting capacitance), ballast compatibility electricity Road 1510；Diode 513, the series connection of diode 514 form halfwave rectifier branch, and the cathode of wherein diode 513 is electrically connected to The positive terminal of 632 branch of the cathode of diode 511, one end of the branch of capacitance 521 and several LED components, diode 513 Anode is connected to the cathode of diode 514；The anode of diode 514 is electrically connected the anode and discharge tube DB1 of diode 512 The other end of branch.One end of capacitance 541 is electrically connected the tie point of diode 513 and diode 514, capacitance 541 it is another End is electrically connected simulation heater chain 570, which is used to limit the electric current for flowing into LED module 530；Ballast compatible circuit 1510 are parallel to capacitance 541, which includes a MOS switch.

Ballast compatible circuit 1510 is used to detect the size for the electric current for flowing into LED daylight lamp 500, intelligent identification LED days Light lamp 500 is applied still is applied to emergency ballast in electric ballast so that LED daylight lamp is compatible with electric ballast and answers Anxious ballast.

In the present embodiment, filter capacitor can choose thin-film type capacitance or patch type capacitance；If choose patch type capacitance, The capacitance is set to power module, through-hole is arranged in the lower section of the connection of the capacitance of power module, which can reduce patch The noise that capacitance is caused by piezoelectric effect.The shape of through-hole can be, round, and ellipse is rectangular etc..

Certainly, in other examples, it can be configured on power module and through-hole is all set at patch capacitor field.

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 capacitance 571.In practical application, an X2 peace can be selected in capacitance 571 Rule capacitance or 2 ceramic condensers, resistance 573 are connected by 2 (or more), in this way to improve the reliability of simulation heater chain. When LED daylight lamp is installed on the tube face with pre- hot function (such as：Tube face with electric ballast), preheated The electric current of journey, AC signal can flow through the resistance 572, the capacitance 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 ensure that electric ballast is normal Start.Simulation heater chain in certain present embodiment also can be used simulated as shown in Fig. 3 B schemes heater chain or its It simulates filament pre-heating such as negative temperature coefficient resister (NTC) as long as can realize.

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).

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

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

In other implementations, being released 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 combining Fig. 4 F, (circuit that Fig. 4 F are parallel to 541 branch of capacitance for ballast compatible circuit 1510 in Fig. 3 C is opened up Flutter) carrying out the detailed action mechanism for describing Fig. 3 C schemes, (electric current of the output of electric ballast work is larger, usually in 200mA Left and right；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 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, give capacitance 4565 to charge via resistance 4563, the voltage of capacitance 4565 increases, and 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 the ends 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 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, repeatedly. 4562 periodic conduction and cut-off of MOS switch.

Its VCC terminal voltage of different IC chips is also different, and in the present embodiment, Vcc operating voltages select 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 frequency of conduction and cut-off, so, user is the flicker of imperceptible fluorescent lamp at this time.

In addition, in the present embodiment, capacitance 541 can also flow through LED's by choosing different capacitances to set Electric current.Due to there is capacitance 541 (play and adjust electric current), the electric current of LED is flowed through in adjustment, can reduce electric ballast and make an uproar Sound (electric ballast 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, give capacitance 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 capacitance 541 branch bypass.

In the above embodiment, discharge tube DB1 threshold values are between 250V~600V.Preferably, threshold value chooses 250V, 300V, 350V, 400V, 420V, 450V.If the threshold value of discharge tube DB1 conducting is too small, had when being matched with certain ballasts compatible The problem of property, it cannot successfully light LED daylight lamp.Itself main reason is that：When LED daylight lamp is powered, the electronics of some types Ballast does not work normally also, and the discharge tube of LED daylight lamp has been connected (impedance changes at this time), and electric ballast erroneous judgement is negative It is abnormal to carry (LED daylight lamp connected).

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 big problem of part ballast noise 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.

Certainly, the embodiment of Fig. 4 F can also be used in the scheme of Fig. 3 D, 3E.

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

①：The embodiment for simulating 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：Capacitance 571, capacitance 572, capacitance 575, capacitance 576, resistance 573, resistance 574；Capacitance 571 and 572 concatenated branch of capacitance With after 576 concatenated branch circuit parallel connection of capacitance 575 and capacitance with 574 concatenated branch circuit parallel connection of resistance 573 and resistance；Capacitance 571 with The tie point and capacitance 575 of capacitance 572 are electrically connected with the tie point of capacitance 576.The simulation heater chain 570 of the other side, packet Contain：Capacitance 571, capacitance 572, resistance 573；The branch circuit parallel connection of capacitance 571 and capacitance 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 ballast compatible circuit 1510 is different, the circuit that can be compatible with embodiment as shown in Figure 4 G.Tool Body, compatible circuit 5510；Including：Bidirectional triode thyristor 5511, inductance 5512, protective device 5513, bilateral diode 5514, electricity Resistance 5515, capacitance 5516, capacitance 5517, resistance 5518；The ends A of bidirectional triode thyristor 5511 are electrically connected one end of capacitance 541, double The other end to silicon-controlled 5511 is electrically connected the ends a of inductance 5512, and the ends b of inductance 5512 are electrically connected protective device 5513 One end, the other end of protective device 5513 are electrically connected the other end of capacitance 541；The triggering end of bidirectional triode thyristor 5511 is electrical One end of bilateral diode 5514 is connected, the other end of bilateral diode 5514 is electrically connected one end and the capacitance of resistance 5518 5516 one end, the ends B of capacitance 5516 are electrically connected the ends a of inductance 5512, and the ends b of resistance 5518 are electrically connected resistance 5515 One end and one end of capacitance 5517, the other end of resistance 5515 are electrically connected the ends A of bidirectional triode thyristor 5511；The b of capacitance 5517 End is electrically connected the ends B of capacitance 5516 and the ends a of inductance 5512.

The LED daylight lamp action mechanism that Fig. 3 D schemes are described below is connect,

It applies in the occasion of electric ballast, the ac signal of electric ballast work output high frequency flows through capacitance 541。

It applies in the occasion of emergency ballast, if electric current flows through capacitance when emergency ballast output is ac signal 541；If output is DC signal or unidirectional pulse formula (direct current) signal, the capacitance 541 is bypassed；Specifically：After energization When the electric signal be added in the both ends of capacitance 541, capacitance 5517 charges by resistance 5515, and capacitance 5516 passes through resistance 5518 Charge, after continuing for some time, capacitance 5517, capacitance 5516 voltage be gradually increased to be more than bilateral diode 5514 The threshold values of (sometimes referred to as two-way trigger tube), after bilateral diode 5514 triggers, the triggering end of bidirectional triode thyristor 5511 is (sometimes Claim gate pole) constant current is flowed through, bidirectional triode thyristor 5511 is connected, to bypass the capacitance 541.

In above-described embodiment, inductance 5512 has the function of inhibiting current break, the virtual value of electric current also can be improved, in turn The brightness of fluorescent tube can be improved.In addition, inductance have afterflow (the pulse DC electric signal sent out to emergency ballast carries out afterflow, To maintain 5511 constant conduction of bidirectional triode thyristor), the effect of energy storage, the maximized emergency ballast that absorbs exports electricity.

In above-described embodiment, the selected value of Thermal Cutoffs (FU1~4) preferably chooses 125 ° between 100 °~150 ° Or 130 °.

In above-described embodiment, protective device 5513 can choose Thermal Cutoffs, rated value between 100 °~140 °, compared with 120 ° of good selection.In setting, the rated value that Thermal Cutoffs is chosen is specified less than what Thermal Cutoffs (FU1~4) was chosen Value.Or rated current type fuse is chosen, specified current value chooses 100mA~500mA, and preferably selection 100mA~ 200mA, such as 100mA, 150mA, 200mA etc..Other control units can also be chosen, by the control unit detect temperature or Current information, reaches the threshold value of setting, and trigger protection can (such as fuse the fuse).The protective device 5513 is used in electronics Ballast occasion, bidirectional triode thyristor 5511 cause the high frequency high current that electric ballast exports to flow into inductance 5512 by false triggering (being equivalent at this time, enter by mistake through contingency mode), and start the protective device.Under contingency mode, the electric current of emergency ballast output Typically not greater than 50mA, and under electric ballast pattern, the electric current of electric ballast output is usually in 200mA or so.

In above-described embodiment, the inductance value of inductance 5512 preferably chooses 2mH~10mH, the present embodiment between 2mH~15mH Middle inductance value chooses 8mH.

In other examples, in scheme shown in Fig. 3 D, the compatible circuit of Fig. 4 F can be used.

In other examples, protective device 5513 can be omitted.Also inductance 5512 can be omitted.

The deformation of embodiment as Fig. 4 G scheme compatible circuits,

①：Resistance 5515 and capacitance 5517 can be omitted, at this moment the b of resistance 5518 is electrically connected the A of bidirectional triode thyristor 5511 End.

②：Resistance 5518 and capacitance 5516 are omitted, at this moment the other end of bilateral diode is electrically connected the one of capacitance 5517 End.

Applicant is had found in propulsion if Fig. 4 G compatible circuits scheme LED straight lamps are in the IS types with certain model, PS types Electric ballast has incompatible phenomenon when matching, by further analyzing, in the electric ballast output signal of the model Contain DC offset voltage (also referred to as DC component, as shown in figure 5, to contain in the electric ballast output signal of certain model The oscillogram of DC offset voltage), it can charge to the capacitance in compatible circuit, lead to (the triggering of false triggering compatible circuit The bidirectional triode thyristor of compatible circuit triggers compatible circuit), and then the electric ballast of the incompatible model of fluorescent lamp, it is that this is right Fig. 4 G compatible circuit schemes are further improved, and specific compatible circuit signal is as shown at figure 4h.

Difference lies in release can component for parallel connection on capacitance 5516 for compatible circuit as shown at figure 4h and Fig. 4 G compatible circuits 5519。

Next the mechanism of energy component 5519 is released in description：

IS types, PS types electric ballast at work, since there are DC offset voltage (sometimes referred to as direct currents point for itself Amount), there are bias voltage at the both ends of such bidirectional triode thyristor 5511 (as shown in oblique line with the arrow in Fig. 5)；Direct current biasing electricity Pressure can make capacitance 5516 voltage (through accumulation after a period of time) improve to bilateral diode 5514 activation threshold value, two-way two Pole pipe 5514 is connected, and triggers bidirectional triode thyristor 5511, and then carry out shunt capacitance 541, causes LED daylight lamp cannot normal work in this way Make.For this purpose, the branch circuit parallel connection one in capacitance 5516 releases energy component (such as releasing energy resistance), it is inclined by the direct current to release that this releases energy component The energy set, such bilateral diode 5514 will not be triggered, and then bidirectional triode thyristor 5511 will not be triggered, to improve The compatibility of LED daylight lamp.

In said program, using release can 5516 accumulation of resistance consumption capacitance energy, make capacitance 5516 voltage will not on The trigger voltage of bilateral diode 5514 is risen to, and then bidirectional triode thyristor 5511 will not be triggered.Improve the compatibility of LED daylight lamp Property.

In above-described embodiment, energy component 5519 is released, energy resistance is released in selection, and resistance value chooses 1K ohm~1M ohm；Preferably Selection, 1K ohm~1000K ohm.The energy release of component 5519 is released caused by electric ballast itself direct current biasing to electricity Outside the energy for holding 5516 chargings, electric leakage of the also releasable bidirectional triode thyristor due to the inconsistent initiation of heated rear both sides equivalent resistance Stream, the energy (electric energy) to charge to capacitance 5516.

In above-described embodiment, the activation threshold value of bilateral diode chooses 10v~100v, preferably chooses, 20v~50v.This In embodiment, the activation threshold value of bilateral diode chooses 32V.

In other examples.As the deformation of Fig. 4 G schemes, energy component is released in the branch circuit parallel connection of capacitance 5517, to let out The energy of 5517 storages is held in electric discharge.

In other examples, the deformation as Fig. 4 G schemes improves the activation threshold value of bilateral diode, such as chooses 50v.In other examples, or will release can component 5519 (such as resistance, the resistance) connect with the bilateral diode newly set The branch circuit parallel connection of the branch of formation and the branch of capacitance 5516 or capacitance 5517, at this moment this new set bilateral diode series connection triggering Threshold value is chosen between 5V~25V.Designing in this way is advantageous in that, when not triggering bilateral diode series connection, releases energy component not It releases the energy of capacitance, can reduce that release can component energy consumption in this way.

It is connected with transistor (such as metal-oxide-semiconductor) switch alternatively, this can also be released to energy component (such as bleeder resistance), the transistor Triggering end link control module, control module samples the input signal of fluorescent tube, to analyze the DC component in input signal；If should DC component is between 0.5~3 times of threshold value of setting, then transistor turns, DC component in the signal of at this moment ballast output More bleeder resistance and the branch for being connected to capacitance, consume the energy of the DC component, improve the compatibility of ballast；If the sampling DC component is more than 3 times of the threshold value set in the signal of the ballast output of signal sampling, then transistor cutoff, at this moment thinks Lamp works are in emergency rating；If DC component is less than the 0.5 of the threshold value of setting in the sampled signal, transistor cutoff is let out Electric discharge resistance does not access capacitive branch.Threshold value chooses a certain value in 5%~50%, i.e. DC component accounts for the signal of ballast output Ratio.

Certainly it also can be used, omit resistance 5515 and capacitance 5517, at this moment the b of resistance 5518 is electrically connected bidirectional triode thyristor 5511 ends A；Or, omitting resistance 5518 and capacitance 5516, at this moment the other end of bilateral diode is electrically connected capacitance 5517 One end.

In embodiment as shown in fig. 41, the embodiment of the present application provides a kind of LED daylight lamp, including：Fluorescent tube 1, end Portion has the pin for inputting external drive signal；For luminous LED module 530；It is coupled with the LED module 530 Current limiting capacitance 541；The current limiting capacitance 541 is used to limit the electric current for flowing into the LED module 530；With the current limiting capacitance 541 Compatible circuit 7510/1510 in parallel；The compatible circuit 7510 is LED days described for being made according to the external drive signal Light lamp is compatible with different types of ballast；The compatible circuit 7510 is configured as：When the external drive signal is that exchange is believed Number when, the electric current that the external communication drive signal generates flows through the current limiting capacitance 541；It is series at the current limiting capacitance 541 Protective device 7513 between the LED module 530 on main line；Temperature or electric current of the protective device for ought be thereon reach To setting threshold value when be triggered or starting protection.

Wherein, as described in Fig. 4 A- Fig. 4 I compatible circuit 7510/1510 by the external drive signal triggering and conducting so that The current limiting capacitance 541 described in the current bypass that the external drive signal generates.Specifically, the compatible circuit (7510/ 1510) there is inductance 7512/5512, the inductance being capable of afterflow.Further, the compatible circuit 7510/1510 is set to On circuit board (such as above-mentioned power module, power supply module, power supply or pcb board), and the protective device 7513 is disposed in proximity to The position of the compatible circuit 7510/1510, the generation for avoiding arcing.

Applicant is improved further the compatible circuit scheme of Fig. 4 H when putting into practice, as shown in fig. 41, with Fig. 4 H's Difference lies in：In compatible circuit shown in Fig. 4 I, protective device 7513 and 541 series connection of capacitance, i.e. protective device 7513 by with 7512 concatenated branch of inductance be adjusted to (as shown at figure 4h) in the major loop (main line) of 541 concatenated circuit of capacitance.In this way Layout setting after, the power module in side is arranged in compatible circuit 7510, which only passes through a pad and lamp plate Connection, improves the stability of connection.Preferably, the pad design (can be equivalent on its circuit with electricity at by 2 small pad Position) it is spliced, a when small pad rosin joint therein in this way, does not influence the work of lamp.Specifically, 2 small pads can claim For first part's pad, second part pad, short circuit setting between first part's pad and second part pad, to first Point pad, second part pad only need one normally can normal use, i.e., a when small pad rosin joint therein do not influence lamp Work.

Preferably, in order to improve the reliability that power module is connect with lamp plate, several through-holes are set in pad, in welding The tin cream of part fusing flows into the through-hole.In the present embodiment, protective device 7513 is configured, close to the pad, to design in this way It is advantageous in that：If power module connects with lamp plate rosin joint, the temperature of rosin joint part can increase and (claim " arcing "), protective device inspection Temperature anomaly (being more than its threshold value) is measured, trigger protection device avoids the generation of arcing.The protective device 7513 is additionally operable to detect The temperature of inductance 7512, if the Wen Sheng of inductance is more than the threshold value of protective device, trigger protection device.

In the present embodiment, protective device 7513 chooses Thermal Cutoffs, and (100 °~130 ° of the threshold value of selection is preferably selected Take 120 °).The structure of the inductance chooses flat boxes shape (cuboid), has 2 pins.Inductance 7512 and temperature When fuse matching assembling is with power module, 7512 tail portion magnetic core of inductance and the height of Thermal Cutoffs are substantially concordant；Inductance It is smaller than 5mm between 7512 and Thermal Cutoffs, is preferably less than 2mm.In this way, once 7512 magnetic core temperature of inductance is higher, Protective device 7513 is easily triggered.If the spacing between inductance 7512 and Thermal Cutoffs is larger, touching for Thermal Cutoffs can be influenced Send out precision.Thermal Cutoffs fixes (e.g., the mode of plug-in unit) in power module, and (pcb board is set to lamp cap with power module In 3) surface it is substantially vertical.

In the present embodiment, the inductance value of inductance 7512 chooses 1mH~15mH, and preferable inductance value chooses 2mH~8mH.

In other examples, in order to prevent the weld of power module and lamp plate because rosin joint cause coupling part print Printed circuit board is carbonized and lasting conducting, is arranged between 2 weld pads (also referred to as pad) for connecting the fuse of power module The isolation channel of hollow out increases creepage distance by the isolation channel, and then also continues to arcing after preventing fuse from disconnecting.Isolation channel Shape can be set to ellipse, diamond shape, rectangle etc..In other examples, which can be arranged multiple, at this moment for The intensity of power module (printed circuit board) is not influenced, is not connected between the isolation channel.Specifically, the quantity of the isolation channel is Two；And two isolation channels are not connected to mutually by part pcb board interval；The part pcb board is located at the pad and institute State the electronic component spacing distance maximum position on PCB plates.

In the scheme implemented such as Fig. 3 C and 3D and 3E, lamp circuit module, including 2 power modules (power module a, b), point It is not set to the lamp cap of LED daylight lamp both sides.Power module a, b are electrically connected with lamp plate.Wherein power module a includes mainly Thermal Cutoffs (FU1, FU2), simulation heater chain 570, a compatible circuit, release can circuit etc..Power module b includes temperature Fuse FU3, at least one of FU4 (volume that power module b can be reduced in this way), by the Thermal Cutoffs respectively with The pin (conductive pin) of lamp cap is electrically connected.LED module 530, rectification unit (rectification branch), another simulation heater chain etc. are set It is placed in lamp plate.The lamp plate includes mainly 2 layers of structure (protective layer, also referred to as PI layer, polyimide；Conductive layer).In the embodiment having In, which is further coated with the ink layer to shield, is respectively coated in conductive layer and PI layers of one side.

In others are implemented, lamp circuit module includes 1 power module.

In other embodiments, the filter capacitor 521 in LED module 530, using 2 or multiple (such as 3,4), At 2 by the way of the branch circuit parallel connection of 2 capacitances, at 3, in such a way that 3 capacitive branch are in parallel or in which 2 series connection The branch mode in parallel with another capacitive branch；At 4, branch after the series connection of 2 capacitances mode in parallel again.Using use 2 or when multiple capacitances, partition capacitance can be arranged on power module.Thin-film type capacitance, or patch can be used in the type of capacitance Sheet capacitor.

It is the circuit of the LED daylight lamp of the 5th embodiment of the utility model as shown in FIGURE 3 E as the improvement of Fig. 3 D schemes Schematic diagram, difference lies in the embodiment for simulating heater chain 570 is different, with scheme shown in 3D with scheme shown in 3D The embodiment of the simulation heater chain 570 of both sides is opposite.

The design of Fig. 3 C and 3D and 3E schemes is advantageous in that：

①：Since the presence of capacitance 541 (also referred to as current limiting capacitance) can make LED current by selecting the capacitance of suitable parameters It is adjustable, and then improve the efficiency of LED daylight lamp.

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

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

④：The compatible type of LED daylight lamp is improved when improving electrical network low voltage (when such as 120V).

As the improvement of Fig. 3 C and 3D and 3E schemes, in compatible circuit 540, current limiting capacitance 541 can be omitted, or omit current limliting Capacitance 541 and ballast compatible circuit 1510, as illustrated in Figure 3 F the circuit for the LED daylight lamp of the utility model sixth embodiment show It is intended to and (omits current limiting capacitance 541 and ballast compatible circuit 1510).At this moment merely with realizing Delayed conducting for discharge tube DB1 (when the voltage being added on discharge tube DB1 reaches the threshold value of design, (specification chooses the rule with discharge tube in Fig. 3 C to discharge tube DB1 Lattice, discharge tube are also referred to as semiconductor discharge tube) conducting.Realize compatible different types of ballast.Next the scheme of description Fig. 3 F.

Shown in Fig. 3 F, with Fig. 3 C schemes difference lies in：

①：The embodiment for simulating heater chain 570 is different, simulates heater chain 570, including：Capacitance 571, capacitance 572, resistance 573, the branch circuit parallel connection of capacitance 571 and 572 concatenated branch of capacitance and resistance 573.

Certainly the other kinds of simulation heater chain (mould in such as Fig. 3 B/3C/3D also can be used in simulation heater chain 570 Quasi- heater chain), to reach the function of simulation filament.

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

Scheme shown in Fig. 3 F can be used for straight pipe type lamp, it may also be used for PLL types (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 capacitance 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 scenario of preheating (PS) type is (in PS ballast occasions, if ballast detects The voltage of (LED fluorescent lamps) fluorescent tube is high, can be mistaken for LED daylight lamp starting protection extremely, cannot light LED daylight lamp).

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

In said program, discharge tube DB1 can use scheme shown in Fig. 4 A, 4B, 4C, 4E to substitute.

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, including：Bidirectional triode thyristor TR, discharge tube 561；1 end of discharge tube 561 connects The ends a are connected to, 2 sections of 2 sections of triggering ends for being connected to bidirectional triode thyristor TR, bidirectional triode thyristor TR are connected to the ends b；When discharge tube 561 The voltage at both ends reaches the threshold value of setting, and discharge tube 561 is connected, and triggers bidirectional triode thyristor TR, and at this moment bidirectional triode thyristor TR is connected (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, including：Bidirectional triode thyristor TR, discharge tube 561,562, capacitance 563；Electric discharge 1 end of pipe 561 is connected to 1 end at the ends a, 2 sections of 1 ends for being connected to discharge tube 562 and capacitance 563；2 ends of discharge tube 562 connect 2 sections to the triggering end of bidirectional triode thyristor TR, capacitance 563 are connected to the ends b.When the voltage at 561 both ends of discharge tube reaches setting Threshold value, discharge tube 561 are connected, at this moment 563 charged state of capacitance, when the threshold value that the voltage at 562 both ends of discharge tube reaches setting is touched Bidirectional triode thyristor TR is sent out, at this moment bidirectional triode thyristor TR conductings (i.e. a, b are connected between end, start LED fluorescent lamps 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.

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

Ballast compatible circuit 1510 shown in Fig. 4 F, including：Rectification unit 5561, control unit 5562, switch unit 5563 And sampling 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；

Rectification unit 5561, the rectification circuit being 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, including, diode 519, resistance 4568, capacitance 4569 branch in sequential series, the branch are used In the driving power for providing IC chip 4561, the wherein anode of diode 519 is electrically connected diode 517 and diode 515 Cathode；IC chip 4561；Resistance 4563；Capacitance 4565；Resistance 4566；Triode 4567；

The OUT terminal of IC chip 4561 is electrically connected the grid (poles G) of the MOS switch 4562 of switch unit 5563, IC chip 4561 ends GND, the ends OVP and the ends CS is all grounded, and the ends VCC 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 a, including sampling resistor 4564.

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

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

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

Fig. 4 G are the embodiment of compatible circuit in Fig. 3 C or D or E.Compatible circuit 5510；Including：Bidirectional triode thyristor 5511, inductance 5512, protective device 5513, bilateral diode 5514, resistance 5515, capacitance 5516, capacitance 5517, resistance 5518；The ends A of bidirectional triode thyristor 5511 are electrically connected one end of capacitance 541, and the other end of bidirectional triode thyristor 5511 is electrically connected The ends a of inductance 5512, the ends b of inductance 5512 are electrically connected one end of protective device 5513, the other end electricity of protective device 5513 Property connection capacitance 541 the other end；The triggering end of bidirectional triode thyristor 5511 is electrically connected one end of bilateral diode 5514, two-way The other end of diode 5514 is electrically connected one end of resistance 5518 and one end of capacitance 5516, and the ends B of capacitance 5516 electrically connect The ends a of inductance 5512 are connect, the ends b of resistance 5518 are electrically connected one end of resistance 5515 and one end of capacitance 5517, resistance 5515 The other end be electrically connected bidirectional triode thyristor 5511 the ends A；The ends b of capacitance 5517 are electrically connected the ends B and the inductance of capacitance 5516 5512 ends a.

In above-described embodiment, the capacitance of capacitance 5517 is much larger than the capacitance of capacitance 5516 when selection, usually chooses capacitance 5516 capacitance is the 1/10~1/300 of the capacitance of capacitance 5517.The capacitance of capacitance 5517 chooses 100nf~1000nf, preferably Selection 300nf~500nf, choose 470nf in the present embodiment.The capacitance of capacitance 5516 chooses 1nf~10nf, it is preferred that chooses 1nf~5nf, 2nf. designs in this way are chosen in the present embodiment to be advantageous in that, when being applied to emergent occasion, shortens bidirectional triode thyristor 5511 service time again.In some cases, bilateral diode is not achieved (after a period of time) in the voltage of capacitance 5516 5514 activation threshold value, bilateral diode 5514 end, and flow through dimension of the electric current less than its maintenance conducting of bidirectional triode thyristor 5511 When holding electric current (generally bi-directional silicon-controlled maintenance electric current preferably chooses 6mA between 3~10mA), bidirectional triode thyristor 5511 Cut-off.Since the capacitance of capacitance 5517 is larger, which charges via resistance 5518 to capacitance 5516, and capacitance 5516 is very Reach the activation threshold value of bilateral diode 5514 soon, bilateral diode 5514 is connected, and at this moment bidirectional triode thyristor 5511 is also corresponding Conducting.Repeatedly.Resistance 5518 is used for the electric current that limiting capacitance 5517 discharges, to double when capacitance 5517 being prevented to be large current discharge It is impacted to diode 5514.

In said program, Fig. 4 G, Fig. 4 H, Fig. 4 I scheme can be applied to Fig. 3 C, 3D, 3E embodiments.

It needing to point out, in his above-mentioned embodiment, " electric connection " of description can be directly electrical connection, Can be that electric signal connects." 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, " energy is released in circuit Circuit ", " ballast compatible circuit ", " simulation heater chain ", " protective device ", " Thermal Cutoffs ", " current limiting capacitance ", " inductance " Etc. in features, quote from embodiment above-mentioned, one or more of features combinations can be only included.

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

In addition, it is necessary to point out, it is in other embodiments, above-mentioned to refer to " simulation filament for LED light Circuit " feature has several different presentation schemes, can be combined between the LED daylight lamp of the different embodiments of compatible PS types It uses.

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 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 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.The term " substantially by ... constitute " for describing combination 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 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 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 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 (21)

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

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

For luminous LED module (530)；

With the current limiting capacitance (541) of the LED module (530) coupling；The current limiting capacitance (541) is for limiting described in inflow The electric current of LED module (530)；

The compatible circuit (7510/1510) in parallel with the current limiting capacitance (541)；The compatible circuit (7510/1510) is used for The LED daylight lamp is set to be compatible with different types of ballast according to the external drive signal；The compatible circuit (7510/ 1510) it is configured as：When the external drive signal is AC signal, the electric current that the external drive signal generates flows through institute State current limiting capacitance (541)；

The protective device (7513) being series between the current limiting capacitance (541) and the LED module (530) on main line；It is described Protective device (7513) be used for when thereon temperature or electric current reach the threshold value of setting when be triggered or starting protection.

2. LED daylight lamp as described in claim 1, it is characterised in that：The compatible circuit (7510/1510) is configured as： When the external drive signal is DC signal, the compatible circuit (7510/1510) is touched by the external drive signal Hair conducting, so that current limiting capacitance (541) described in the current bypass that the external drive signal generates.

3. LED daylight lamp as claimed in claim 1 or 2, it is characterised in that：The compatible circuit (7510/1510) is set to On circuit board, and the protective device (7513) is disposed in proximity to the position of the compatible circuit (7510/1510), for avoiding The generation of arcing.

4. LED daylight lamp as claimed in claim 3, which is characterized in that the compatible circuit (7510/1510) include it is two-way can Control silicon (5511/7511), bilateral diode (5514/7514), the first capacitance (5516/7516), first resistor (5518/ 7518)；The ends A of the bidirectional triode thyristor (5511/7511) are electrically connected one end of the current limiting capacitance (541), described two-way The other end of silicon-controlled (5511/7511) is electrically connected one end and the current limliting electricity of first capacitance (5516/7516) Hold the other end of (541)；The triggering end of the bidirectional triode thyristor (5511/7511) is electrically connected the bilateral diode (5514/ 7514) one end；The other end of the bilateral diode (5514/7514) is electrically connected the first resistor (5518/7518) One end and first capacitance (5516/7516) the other end；The other end of the first resistor (5518/7518) is electrical Connect one end of first capacitance (5516/7516) and the ends A of the bidirectional triode thyristor (5511/7511).

5. the LED daylight lamp as described in claims 1 or 2 or 4, it is characterised in that：The compatible circuit (7510/1510) has Inductance (7512/5512), the inductance being capable of afterflows.

6. LED daylight lamp as claimed in claim 5, it is characterised in that：The inductance (5512/7512) is coupled to two-way controllable Between the other end and the other end of the current limiting capacitance (541) of silicon (5511/7511)；The bidirectional triode thyristor (5511/ 7511) the other end is electrically connected one end of the inductance (5512/7512), the other end electricity of the inductance (5512/7512) Property the connection current limiting capacitance (541) the other end；One end of first capacitance (5516/7516) is electrically connected the inductance (5512/7512) one end.

7. LED daylight lamp as claimed in claim 6, it is characterised in that：The protective device (7513) is used for the inductance (5512/7512) the starting protection when electric current flowed into is more than rated current.

8. LED daylight lamp as claimed in claim 4, it is characterised in that：The other end of the first resistor (5518/7518) with It is in series with second resistance (5515/7515) between the ends A of the bidirectional triode thyristor (5511/7511)；

It is in series between the other end and one end of first capacitance (5516/7516) of the first resistor (5518/7518) Second capacitance (5517/7517).

9. LED daylight lamp as claimed in claim 8, it is characterised in that：The capacitance of second capacitance (5517/7517) is more than The capacitance of first capacitance (5516/7516).

10. LED daylight lamp as claimed in claim 9, it is characterised in that：The capacitance of first capacitance (5516/7516) is selected Take 1nf~10nf；The capacitance of second capacitance (5517/7517) chooses 100nf~1000nf.

11. LED daylight lamp as claimed in claim 5, it is characterised in that：The inductance (7512) is packaged into rectangular parallelepiped structure； The protective device is concordant with the tail portion magnetic core height of the inductance (7512).

12. LED daylight lamp as claimed in claim 11, it is characterised in that：The inductance (7512) and the protective device The distance between (7513) it is less than 2 millimeters.

13. LED daylight lamp as described in claim 1, it is characterised in that：The protective device (7513) is Thermal Cutoffs； The protective device (7513) triggers the Thermal Cutoffs fusing when temperature rises to threshold value.

14. LED daylight lamp as claimed in claim 13, it is characterised in that：The threshold value is 100 degrees Celsius -130 degrees Celsius.

15. LED daylight lamp as claimed in claim 5, it is characterised in that：The inductance value of the inductance (7512) is 2mH~8mH.

16. claim 1,2,4,6-15 it is any as described in LED daylight lamp, it is characterised in that：The end of the fluorescent tube (1) is set There is lamp cap (3)；The pcb board being electrically connected with the pin is equipped in the lamp cap (3)；The compatible circuit (7510/1510) It is set on the pcb board；The pcb board is equipped with pad；The protective device (7513) is arranged close to the pad.

17. LED daylight lamp as claimed in claim 16, it is characterised in that：The LED daylight lamp includes lamp plate (2), described LED module (530) includes the LED component (632) being set on the lamp plate；The pcb board passes through the pad and the lamp Plate (2) is electrically connected.

18. LED daylight lamp as claimed in claim 17, it is characterised in that：The lamp plate (2) is flexible PCB.

19. LED daylight lamp as claimed in claim 16, it is characterised in that：On the pcb board on the pad and pcb board Electronic component between be equipped with isolation channel.

20. LED daylight lamp as claimed in claim 19, it is characterised in that：The quantity of the isolation channel is two；And two Isolation channel is not connected to mutually by part pcb board interval；The part pcb board is located at the pad and the electricity on the pcb board Subcomponent spacing distance maximum position.

21. LED daylight lamp as claimed in claim 16, it is characterised in that：The pad includes being set to described pcb board one end First part's pad and second part pad；Short circuit setting between first part's pad and second part pad.