CN208519540U - LED daylight lamp - Google Patents

Abstract

The utility model discloses a kind of LED daylight lamp, comprising: fluorescent tube (1), end have the pin for inputting external drive signal；Rectification circuit；Filter unit (520)；LED module (530) is coupled to the LED module (530) and for adjusting the electric current for flowing through the LED module (530)；Compatible circuit, the both ends of the current limiting capacitance (541) are respectively coupled to the both ends of the compatible circuit, and the compatible circuit is used to make the compatible different types of ballast of the LED daylight lamp according to the external drive signal；The compatible circuit (5510) is configured as: when the external drive signal is AC signal, the electric current that the external drive signal generates flows through the current limiting capacitance (541)；And discharge tube (DB1/561), it is series between the rectification circuit and the pin of the LED daylight lamp end with the current limiting capacitance (541).The compatibility emergency type ballast of the various types of electrical ballasts of compatibility and close friend that the LED daylight lamp can be friendly.

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.

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 that how friendly LED daylight lamp compatibility be existing different types of when being substituted for LED daylight lamp lamp Whole ballast becomes more urgent.

Commercially available common electric ballast mainly can be divided into instantaneous starting type (Instant Start, abbreviation IS type) electronics Ballast, quick-starting direct (RS type) electric ballast, preheating start-up type (Program Start, abbreviation PS type) electronic ballast Device.Electric ballast has resonance circuit, and driving design is matched with the load characteristic of fluorescent lamp, i.e., electric ballast is in daylight Lamp is capacitive component before lighting, and after lighting is resistive device, provides corresponding startup program, and makes fluorescent lamp can be with Correctly light.And LED is non-linear component, it is entirely different with the characteristic of traditional fluorescent lamp.

Ballast is in addition to above-mentioned electric ballast, and in certain occasions due to the requirement of fire-fighting, fluorescent lamp, which is applied, is meeting an urgent need Occasion, it is matched at this moment to need corresponding emergency ballast；High frequency is exported (typically not greater than when emergency ballast works 20KHz) pulse-type current, the electric current is different from the electric current of the output of electrical ballast, and (usual emergency ballast is defeated when working Size of current out is no more than 50mA, and the size of current of electric ballast work output is in 200mA or so).Since driving is believed Number difference, the LED daylight lamp for being compatible to electric ballast possibly can not be compatible with emergency ballast, thus be unfavorable for LED days The large-scale popularization and application of light lamp.

In addition, certain PS types, IS type electric ballast, containing DC offset voltage point in the signal that when work exports Amount, the DC offset voltage component can make the compatible circuit of LED daylight lamp judge by accident, cause LED daylight lamp normal Work.To be unfavorable for the large-scale popularization and application of LED daylight lamp.

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.

After the discharge tube of existing LED daylight lamp is typically placed in rectifier bridge, thus being applied to emergency electronic ballast Occasion under compatibility it is poor.Meanwhile existing LED daylight lamp be applied to electric ballast occasion when, due to electronic ballast Contain DC offset voltage in device output signal, is easy to cause in LED daylight lamp lamp cap for being compatible with the double of (emergency) ballast To silicon-controlled false triggering, to burn out other electronic components such as inductance in lamp cap.

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

Utility model content

Many embodiments of the abstract description herein about " the utility model ".However the vocabulary " the utility model " is only For describing disclosed some embodiments (in spite of in claim) 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, end have the pin for inputting external drive signal；

Rectification circuit is used to rectify the external drive signal, to generate rectified signal；

Filter unit is used to be filtered the rectified signal, to generate filtered signal；

LED module is used to receive the filtered signal to shine；

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

Compatible circuit, the both ends of the current limiting capacitance are respectively coupled to the both ends of the compatible circuit, and the compatible circuit For making the compatible different types of ballast of the LED daylight lamp according to the external drive signal；The compatible circuit is matched Be set to: when the external drive signal is AC signal, the electric current that the external communication driving signal generates flows through the limit Galvanic electricity is held；And

Discharge tube is series between the rectification circuit and the pin of the LED daylight lamp end with the current limiting capacitance.

Preferably, the concatenated current limiting capacitance and discharge tube are in parallel with the compatible circuit.Preferably, the rectified current Road couples the LED module and including the first rectification unit and the second rectification unit, and first rectification unit includes diode, Second rectification unit includes diode；The current limiting capacitance in parallel and the compatible circuit are coupled to second rectification Between the pin of unit and the LED daylight lamp one end；First rectification unit be coupled to the LED module with it is described Between the pin of LED daylight lamp the other end.

Preferably, second rectification unit includes concatenated two diodes, the tie point between two diodes Couple a common connecting point between the current limiting capacitance and the compatible circuit in parallel；

First rectification unit includes concatenated two diodes, described in the tie point coupling between two diodes The pin of LED daylight lamp the other end.

Preferably, second rectification unit includes concatenated two diodes, the connection between described two diodes A common connecting point between point the coupling current limiting capacitance and the compatible circuit in parallel；

First rectification unit includes four diodes, wherein the tie point between two diodes couples the LED One pin of fluorescent lamp the other end, and the tie point between another two diode couples described LED daylight lamp the other end Another pin.

Preferably, the LED module includes LED unit, the discharge tube and the current limiting capacitance and the LED unit string Connection.

Preferably, the compatible circuit can be when the electric current of the external drive signal be greater than predetermined value by the current limliting electricity Hold access circuit, and is connected when the electric current of the external drive signal is less than predetermined value.

Preferably, the compatible circuit includes: control unit, switch unit and sampling unit；The sampling unit according to The external drive signal forms sampled voltage；The switch unit disconnects described simultaneous when the sampled voltage is greater than preset value The compatible circuit is connected when the sampled voltage is less than preset value so that the current limiting capacitance is accessed circuit in capacitive circuit； Described control unit is used to control the cut-off and conducting of the switch unit according to the sampled voltage.

Preferably, the compatible circuit is configured as: when the external drive signal is DC signal, the compatibility Circuit is by the external drive signal triggering and conducting, therefore current limiting capacitance described in the current bypass that generates of the external drive signal.

Preferably, the compatible circuit includes bidirectional triode thyristor, bilateral diode, first capacitor, first resistor；It is described double One end of the current limiting capacitance is electrically connected to the silicon-controlled end A/1 end, the other end of the bidirectional triode thyristor is electrically connected institute State one end of first capacitor and the other end of the current limiting capacitance；The triggering end of the bidirectional triode thyristor is electrically connected described double To one end of diode；The other end of the bilateral diode be electrically connected the first resistor one end and it is described first electricity The other end of appearance；The other end of the first resistor be electrically connected the first capacitor one end and the bidirectional triode thyristor The end A/1 end.

Preferably, the discharge tube can make LED daylight lamp Delayed conducting from external drive signal input.

Preferably, the LED daylight lamp further includes bidirectional triode thyristor；The discharge tube first end connection it is described it is two-way can Control the first end of silicon；The second end of the discharge tube connects the triggering end of the bidirectional triode thyristor.

It preferably, further include protective device；The both ends of the protective device are respectively coupled to the compatible circuit and described Current limiting capacitance；The protective device be used for when thereon temperature or electric current reach the threshold value of setting when be triggered or starting protection.

It preferably, further include protective device；The both ends of the protective device are respectively coupled to the another of the bidirectional triode thyristor The other end of end and the current limiting capacitance；The protective device be used for when thereon temperature or electric current reach the threshold value of setting when It is triggered or starting protection.

Preferably, the protective device is current insurance silk.

Preferably, the first capacitor, which is parallel with, releases energy resistance；The energy resistance of releasing can consume the external drive signal To the energy that first capacitor generates, so that the voltage of the first capacitor is not up to the trigger voltage of the bilateral diode.

Preferably, the resistance value for releasing energy resistance chooses 1K ohm to 1000K ohm.

Preferably, the resistance value for releasing energy resistance is 470K ohm.

Preferably, the both ends of the fluorescent tube are equipped with lamp cap；The LED module includes lamp plate and is set on the lamp plate LED component；The rectification circuit, the filter unit and the compatible circuit are set to the power supply mould in the lamp cap On block；The power module is electrically connected by a pad and the lamp plate.

The utility model has the advantages that

The scheme for the LED daylight lamp that the application proposes can have the advantage that in embodiment

1.: the power panel of side only passes through solder joint (such as being composed of 2 or more pads) with lamp plate and electrically connects It connects, the quantity of solder joint reduces the reliability for improving LED daylight lamp；

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

3.: in electrical network low voltage, (network voltage is lower than 120V) can normally start LED daylight lamp；

4.: discharge tube is arranged before rectifying branch (the second rectification unit), can so make LED daylight lamp for meeting an urgent need When (electric ballast) occasion, voltage is lower than the activation threshold value of discharge tube DB1 sometimes, and at this moment discharge tube DB1 ends, and reaches It is connected again when its activation threshold value, so as to improve to emergency electronic ballast compatibility；

5.: emergency loop seals in current insurance silk (5513/8512), very good solution bidirectional triode thyristor false triggering or short The problem that road causes power of lamp tube excessive；

6.: can be equipped in compatible circuit release can resistance (bleeder resistance), to avoid because of ballast (such as electronic ballast Device) there are problems that DC bias signal (or DC offset voltage) and leads to false triggering bidirectional triode thyristor, it improves to all kinds of towns Flow the compatibility performance and reliability of operation of device；And/or

7.: current insurance silk (5513/8512, be specifically, for example, rated current type fuse), solution are sealed in emergency loop Certainly because bidirectional triode thyristor false triggering or short circuit lead to power of lamp tube problems of too；So seal in current insurance silk (rather than temperature Fuse) except, it can also cancel using inductance (7512), (reduce plug-in components quantity, and temperature to reduce production stage Fuse early period, needs were preforming, and assembling needs mash welder spot welding, and uses current insurance silk that can directly cross wave-soldering, improved electric Source production efficiency reduces production cost；Horizontal put of inductance (7512) needs angle of bending, and produces easily skew), and cancel setting electricity Sense can be improved production efficiency.

Referring to following description and accompanying drawings, the particular implementation of the utility model is disclosed in detail, specifies practical Novel principle can be in a manner of adopted.It should be understood that the embodiments of the present invention in range not thus by Limitation.In the range of the spirit and terms of appended claims, the embodiments of the present invention 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 uses in a other embodiment, is combined with the feature in other embodiment, or the feature in substitution other embodiment.

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

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

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

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

Fig. 4 F, Fig. 4 G, the topological schematic diagram that Fig. 4 H is compatible circuit in Fig. 3 C-E；

Fig. 4 I is the topological schematic diagram of the compatible circuit in Fig. 3 G；

Fig. 4 J is the structural schematic diagram of compatible circuit in Fig. 3 H；

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

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 embodiment of the utility model provides a kind of LED daylight lamp and includes: fluorescent tube 1, is set to Lamp plate 2 in fluorescent tube 1, and it is socketed on two lamp caps 3 at 1 both ends of fluorescent tube respectively；Lamp cap 3 passes through the end of glue sticking and fluorescent tube 2 Portion, lamp plate 2 are affixed on the inner surface of fluorescent tube 1 by bonding agent.Wherein fluorescent tube 1 can be the peripheral framework of elongate, using plastics Material fluorescent tube or glass material fluorescent tube, the present embodiment are easy to avoid traditional glass fluorescent tube using the glass lamp for having strengthening section The electric shock accidents and plastic lantern tube capacity that rupture and rupture cause by electric leakage 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 Body passes through the U-shaped LED daylight lamp that connector (connector can also be telescopic to cope with different applications) is formed.

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 diodes form LED component 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 is divided for two parts, referred to as double individual (i.e. all power supply groups Part 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 lamp circuit mould The part (such as rectification branch, filter unit simulates heater chain, fuse) of block 5 or whole components are configured at lamp plate, in this way The size of the circuit board of lamp circuit module 5 can be optimized.Lamp circuit module 5 and lamp plate 2 are electrically connected.

Next Fig. 2A, 2B and Fig. 3 A-H are 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.

Fig. 2A is please referred to, shown in 2B, the end of the lamp cap 3 of LED daylight lamp is configured with hollow 301 (solid conduction of conductive pin Needle can also).

Fig. 3 A-H is simultaneously combined with reference to Fig. 2A, Fig. 2 B, hollow conductive pin 301 is respectively and electrically connected to 4 equipped with 4 altogether and connects Foot is (that is, the first pin A1 of side, the second pin A2；And third pin B1, the 4th pin B2 of the other side).

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 is shorted or draws a pin to by setting.

Shown in A, Fig. 2 B and Fig. 3 H as shown in Figure 1, Figure 2, the utility model embodiment provides a kind of LED daylight lamp, comprising: Fluorescent tube 1, end have pin A1, A2, B1, B2 for inputting external drive signal；Rectification circuit is used for described outer Portion's driving signal is rectified, to generate rectified signal；Filter unit 520 is used to filter the rectified signal Wave, to generate filtered signal；LED module 530 is used to receive the filtered signal to shine；Current limiting capacitance 541, coupling It is connected to the LED module 530 and for adjusting the electric current for flowing through the LED module 530；Compatible circuit 1510/5510/7510/ 8510；The both ends of the current limiting capacitance 541 are respectively coupled to the both ends of the compatible circuit, and the compatible circuit is used for according to institute Stating external drive signal makes the compatible different types of ballast of the LED daylight lamp；The compatible circuit 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；And discharge tube DB1/561, the rectification circuit and the LED daylight lamp end are series at the current limiting capacitance 541 Pin between.

Wherein, the concatenated current limiting capacitance 541 and discharge tube DB1 are in parallel with the compatible circuit 1510.Further, The discharge tube DB1 and the current limiting capacitance 541 are connected with the LED module 530.In some embodiments, LED module 530 It also is indicated as in LED unit 630, such as Fig. 3 A illustrated embodiment.In this embodiment, the discharge tube DB1 can make described LED daylight lamp Delayed conducting from external drive signal input.

The rectification circuit couples the LED module 530 and including the first rectification unit and the second rectification unit, and described the One rectification unit includes diode, and second rectification unit includes diode；The current limiting capacitance 541 in parallel with it is described simultaneous Capacitive circuit 1510 is coupled between the pin of second rectification unit and the LED daylight lamp one end；First rectification Unit is coupled between the LED module 530 and the pin of described LED daylight lamp the other end.

Specifically as shown in figure 3h, second rectification unit includes concatenated two first diodes 511,512, this two The tie point coupling current limiting capacitance 541 in parallel and the compatible circuit 1510 between a first diode 511,512 it Between a common connecting point；First rectification unit includes concatenated two the second diodes 513,514, and this two second Tie point between diode 513,514 couples the pin of described LED daylight lamp the other end.

In other embodiments, as shown in FIGURE 3 E, second rectification unit includes concatenated two diodes 513,514 (two first diodes), tie point coupling between described two diodes 513,514 current limiting capacitance 541 in parallel with A common connecting point between the compatible circuit 1510.First rectification unit includes four diodes 511,512, 511a, 512a (four the second diodes), wherein the tie point between two diodes 511,512 couples the LED daylight The one pin A1 of lamp the other end, and the tie point coupling LED daylight lamp between another two diode 511a, 512a is another Another pin A2 of end.

Next the electrical block 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.

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, 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.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 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 connection of the concatenated branch of light emitting diode 202 (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, capacitor 541, ballast compatible circuit 1510. The cathode of diode 515 is electrically connected the filter unit 520, the anode yin with one end of capacitor 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 capacitor 541 is electrically connected ballast Third pin B1 and the 4th pin is electrically connected in one end of compatible circuit 1510, the other end of ballast compatible circuit 1510 B2。

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 ?.

Fig. 3 B is 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 ballast.

Embodiment adds two simulation heater chains 570, which respectively contains concatenated two electricity Resistance 573 and 574 branch and concatenated capacitor 571 and 572 branch, and two resistance 573 and 574 tie point coupling The tie point of two capacitor 571 and 572.When LED daylight lamp is installed on the tube face with pre- heat function (such as: there is 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 capacitor 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 guarantees ballast and normally starts.

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.

(the first) the first pin A1, the second pin A2 of the electric connection of rectification unit 510 LED daylight lamp 500, to incite somebody to action An at least one of AC rectification of the first pin A1 and second pin A2 are coupled into 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 branch, 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 capacitor 521 release can circuit (with released in Fig. 3 A can circuit 550, This is no longer described in detail).

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

Compatible circuit 540 includes the compatible electricity of diode 513, diode 514, capacitor 541 (also referred to as current limiting capacitance), ballast Road 1510；Diode 513, the series connection of diode 514 form halfwave rectifier branch, and wherein the cathode of diode 513 is electrically connected to The positive terminal of the cathode of diode 511,632 branch of one end and several LED components of the branch of capacitor 521, 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 capacitor 541 is electrically connected the tie point of diode 513 and diode 514, capacitor 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 capacitor 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, which is applied, is still 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 capacitor；If choose patch type capacitor, The capacitor is set to power module, through-hole is arranged in the lower section of the connection of the capacitor of power module, which can reduce patch The noise that capacitor 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 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 carry out detailed description in conjunction with Fig. 4 F (the topological schematic diagram that Fig. 4 F is ballast compatible circuit 1510 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 Fig. 3 C scheme；And ballast of meeting an urgent need The electric current that device exports when working is smaller, typically not greater than 50mA)；When LED daylight lamp 500 is powered, MOS switch 4562 is connected；

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 (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 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 above embodiment, discharge tube DB1 threshold value is 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: LED daylight lamp be powered when, 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 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.

Certainly, the embodiment of the ballast compatible circuit 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 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 ballast compatible circuit 1510 is different, can use the compatible circuit of embodiment as shown in Figure 4 G. Specifically, compatible circuit 5510；Include: bidirectional triode thyristor 5511, inductance 5512, protective device 5513, bilateral diode 5514, Resistance 5515, capacitor 5516, capacitor 5517, resistance 5518；1 end of bidirectional triode thyristor 5511 is electrically connected behind the end A through the end A electricity Property connection 541 (not shown) of capacitor one end, the other end of bidirectional triode thyristor 5511 is electrically connected the end a of inductance 5512, inductance 5512 end b is electrically connected one end of protective device 5513, and the other end of protective device 5513 is electrically connected behind the end B through the end B electricity Property be electrically connected 541 (not shown) of capacitor the other end；The triggering end of bidirectional triode thyristor 5511 is electrically connected bilateral diode 5514 one end, the other end of bilateral diode 5514 are electrically connected one end of resistance 5518 and one end of capacitor 5516, capacitor 5516 end B is electrically connected the end a of inductance 5512, and the end b of resistance 5518 is electrically connected one end and the capacitor 5517 of resistance 5515 One end, the other end of resistance 5515 is electrically connected 1 end of bidirectional triode thyristor 5511；The end b of capacitor 5517 is electrically connected capacitor 5516 end B and the end a of inductance 5512.

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

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

It applies in the occasion of emergency ballast, if electric current flows through capacitor when emergency ballast output is ac signal 541；If output is DC signal or unidirectional pulse formula (direct current) signal, the capacitor 541 is bypassed；It is specific: after energization When the electric signal be added in the both ends of capacitor 541, capacitor 5517 charges by resistance 5515, and capacitor 5516 passes through resistance 5518 Charge, after continuing for some time, capacitor 5517, capacitor 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 capacitor 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 (to emergency ballast issue pulse DC electric signal carry 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 lower than what Thermal Cutoffs (FU1~4) were 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, for bidirectional triode thyristor 5511 by false triggering, the high frequency high current for causing electric ballast to export flows into inductance 5512 (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 mode, the electric current of electric ballast output is usually in 200mA or so.

In above-described embodiment, the inductance value of inductance 5512 is between 2mH~15mH, preferably selection 2mH~10mH, the present embodiment 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.Inductance 5512 can also be omitted.

The deformation of the embodiment of compatible circuit as scheme shown in Fig. 4 G,

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

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

Applicant has found the compatible circuit scheme LED straight lamp such as Fig. 4 G in the IS type with certain model, PS in propulsion Type electric ballast has incompatible phenomenon when matching, by further analyzing, the electric ballast output signal of the model In containing DC offset voltage (also referred to as DC component, as shown in figure 5, for certain model electric ballast output signal in contain Have the waveform diagram of DC offset voltage), it can charge to the capacitor in compatible circuit, lead to (the touching of false triggering compatible circuit The bidirectional triode thyristor of compatible circuit is sent out to trigger compatible circuit), and then the electric ballast of the incompatible model of fluorescent lamp, it is This, further improves the compatible circuit scheme of Fig. 4 G, specifically as shown at figure 4h.

It distinguishes and is shown in Fig. 4 H and Fig. 4 G, energy component 5519 is released in parallel connection on capacitor 5516.

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

IS type, PS type 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 capacitor 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 bypass capacitor 541 in Fig. 3 C-E scheme, leads to LED daylight in this way Lamp cisco unity malfunction.For this purpose, the branch circuit parallel connection one in capacitor 5516 releases energy component (such as releasing energy resistance), this releases energy component to let out The energy by the direct current biasing is put, such bilateral diode 5514 will not be triggered, and then bidirectional triode thyristor 5511 will not be by Triggering, to improve the compatibility of LED daylight lamp.

In above scheme, using release can 5516 accumulation of resistance consumption capacitor energy, make capacitor 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 due to 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 capacitor 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 scheme, energy component is released in the branch circuit parallel connection of capacitor 5517, to let out The energy of 5517 storages is held in electric discharge.

In other examples, the deformation as Fig. 4 G scheme 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 capacitor 5516 or capacitor 5517, at this moment this newly sets 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 capacitor, can reduce that release can component energy consumption in this way.

It is connected alternatively, this can also be released to energy component (such as bleeder resistance) and transistor (such as metal-oxide-semiconductor) switch, 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 capacitor, 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 of setting 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 that ballast exports Ratio.

Certainly it also can be used, omit resistance 5515 and capacitor 5517, at this moment the b of resistance 5518 is electrically connected bidirectional triode thyristor 5511 1 end；Or, omitting resistance 5518 and capacitor 5516, at this moment the other end of bilateral diode is electrically connected capacitor 5517 One end.

Applicant is improved further the compatible circuit scheme of Fig. 4 H when practicing, and as shown in fig. 41, passes through B3, B4 End is electrically connected 541 (not shown) of capacitor；The difference of Fig. 4 I and Fig. 4 H is: guarantor is saved in compatible circuit scheme shown in Fig. 4 I Protection unit 7513 (and by the protective device 7513 be configured to 541 series connection of (current limliting) capacitor, as shown in Figure 3 G), that is, protect Device 7513 as with the concatenated branch of inductance 7512 (as shown in Fig. 4 G-H) be adjusted to in the concatenated circuit major loop of capacitor 541 (such as Fig. 3 G).After such layout setting, the power module of side is arranged in compatible circuit 7510, which only passes through one A pad is connect with lamp plate, improves the stability of connection.Preferably, can be by the pad design at by 2 small pad (on its circuit It is equivalent to same current potential) it is spliced, a when small pad rosin joint therein in this way, does not influence the work of lamp.Preferably, in order to improve Several through-holes are arranged in pad in the reliability that power module is connect with lamp plate, and in welding, it is logical to flow into this for the tin cream of part fusing Hole.In the present embodiment, protective device 7513 is configured close to the pad, design is advantageous in that in this way: if power module with When lamp plate rosin joint connects, the temperature of rosin joint part can increase and (claim " arcing "), and protective device detects that temperature anomaly (is more than its threshold Value), trigger protection device avoids the generation of arcing.The protective device 7513 is also used to detect the temperature of inductance 7512, if electric When the temperature rise of sense 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 °).Its structure chooses flat boxes shape (cuboid), has 2 pins.Inductance 7512 and Thermal Cutoffs When with assembling with power module, 7512 tail portion magnetic core of inductance and the height of Thermal Cutoffs are substantially concordant；Inductance 7512 and temperature Spacing between fuse is less than 5mm, is preferably less than 2mm.If larger in spacing, the triggering precision of Thermal Cutoffs will affect. Thermal Cutoffs fixes (e.g., the mode of plug-in unit) in power module, substantially vertical with the surface of power module (pcb board).

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 is increased creepage distance by the isolation channel, and then also continues arcing after preventing fuse from disconnecting.Isolation channel Shape can be set to ellipse, diamond shape, rectangle etc..In other examples, the isolation channel is settable multiple, at this moment for The intensity of power module (printed circuit board) is not influenced, is not connected between the isolation channel.

In the scheme implemented such as Fig. 3 C and 3D and 3E, lamp circuit module includes 2 power modules (power module a, b) to divide It is not set to the lamp cap of LED daylight lamp two sides.Power module a, b and lamp plate are electrically connected.Wherein power module a mainly includes 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. is set It is placed in lamp plate.The lamp plate mainly includes 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), 2 When a by the way of the branch circuit parallel connection of 2 capacitors, 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 capacitors mode in parallel again.Using use 2 or when multiple capacitors, partition capacitance can be arranged on power module.Thin-film type capacitance, or patch can be used in the type of capacitor 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 scheme Schematic diagram is that the embodiment for simulating heater chain 570 is different, with scheme shown in 3D with the difference of scheme shown in 3D The embodiment of the simulation heater chain 570 of two sides is opposite.

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

1.: since the presence of capacitor 541 (also referred to as current limiting capacitance) can make LED electric by selecting the capacitor of suitable parameters Stream is adjustable, and then improves the efficiency of LED daylight lamp.

2.: so that LED daylight lamp can compatible electronic type ballast and compatible emergency type 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.: 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 scheme, in compatible circuit 540, current limiting capacitance 541 can be omitted, or omit current limliting Capacitor 541 and ballast compatible circuit 1510, the circuit for the LED daylight lamp of the utility model sixth embodiment shows as illustrated in Figure 3 F 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, 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 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, capacitor 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 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 There is the compatibility when 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.: 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.

It is the circuit of the LED daylight lamp of the 7th embodiment of the utility model as shown in Figure 3 G as the improvement of Fig. 3 E scheme Schematic diagram.It is that 541 branch of current limiting capacitance has the (current limiting capacitance 541 of series connection protective device 7513 with the difference of scheme shown in 3E Branch one end after branch is connected with protective device 7513 is electrically connected rectification branch, and the other end is electrically connected simulation heater chain 570), other are same with Fig. 3 E.Its matched ballast compatible circuit is as shown in fig. 41.

Fig. 3 H is the circuit diagram of the LED daylight lamp of the 8th embodiment of the utility model.The LED daylight lamp 500 includes: It simulates heater chain 570, compatible circuit 540, LED module 530, the first rectification unit 510 and is electrically connected in pin respectively Fuse FU1-4.

First rectification unit 510 is electrically connected third pin B1, the 4th pin B2 of the LED daylight lamp 500, to by coupling The AC rectification of third pin B1, the 4th pin B2 are connect into direct current.

LED module 530 electrically connects the first rectification unit 510, wherein the branch being made of several LED components 632 and filtering The branch circuit parallel connection of capacitor 521, and correspond to the direct current after the rectification of filtering and shine.

Compatible circuit 540 is electrically connected LED module 530 and is electrically connected to the via simulation heater chain 570, fuse One pin A1, the second pin A2.

Compatible circuit 540 includes the compatible electricity of diode 511, diode 512, capacitor 541 (also referred to as current limiting capacitance), ballast Road 1510, discharge tube DB1；Diode 511, the series connection of diode 512 form halfwave rectifier branch, wherein the cathode of diode 512 The anode of the anode, diode 512 that are electrically connected to diode 511 is electrically connected one end of capacitor 521, the yin of diode 511 Pole is electrically connected the other end of capacitor 521,541 branch of capacitor and discharge tube DB1 branch are contacted and connect, wherein 541 branch of capacitor One end is electrically connected one end of discharge tube DB1 branch, and the other end of 541 branch of capacitor is electrically connected the simulation heater chain of side 570, the other end of discharge tube DB1 branch is electrically connected the cathode of 512 branch of anode tap and diode of 511 branch of diode End；Compatible circuit 1510 is electrically connected 541 branch of capacitor and discharge tube DB1 branch series winding and connects the both ends of branch (ballast is compatible electric 1510 topology of road is as shown in fig. 4j).

Fuse FU1-4 is Thermal Cutoffs, and selected value preferably chooses 125 ° or 130 ° between 100 °~150 °.

In the present embodiment, lamp circuit module 5 (being referred to as power supply, power supply mould group) is configured to by two module body groups It closes, which is respectively set in the lamp cap at LED daylight lamp both ends.Modules A at least configures simulation 570 component of heater chain and fuse (FU3, FU4).Module B at least configures simulation 570 component of heater chain, insurance Component, current limiting capacitance, the discharge tube DB1 of silk (FU1, FU2), ballast compatible circuit 1510 in compatible circuit.LED module Rectification branch component and the first rectification branch component in 530 component and compatible circuit are all set to lamp plate (lamp plate Using having mercy on property circuit board, aluminum substrate material circuit board etc.).

Designing in this way is advantageous in that: the modules A, and module B passes through a pad respectively and lamp plate is electrically connected.Preferably A pad (for the pad of side, at work equipotential) can be composed of 2 or more pads, in this way LED daylight lamp can also work normally when rosin joint occurs for part pad).

In the embodiment having, above-mentioned is configured at modules A, and the component of module B can all be set to lamp plate, at this moment can save The slightly modules A plate, module B plate are directly electrically connected to the conductive pin of lamp cap by conducting wire.

Heater chain 570 is simulated, includes capacitor 571, capacitor 572, resistance 573, capacitor 574, capacitor 575；Capacitor 571 The branch and capacitor 574 and 575 branch of capacitor series winding connect with 572 branch of capacitor series winding connects 573 branch circuit parallel connection (three of branch and resistance Branch circuit parallel connection), wherein the tie point of capacitor 571 and 572 couples the tie point of two capacitor 574 and 552.When LED fluorescent lamp is pacified When loaded on tube face with pre- heat function (such as: the tube face with electric ballast), in warm, AC signal Electric current can flow through two simulation heater chains 570, and achieve the effect that simulate filament.In this way, electric ballast on startup can The filament pre-heating stage normally is spent, and guarantees ballast and normally starts.In the present embodiment.The two sides of LED daylight lamp 500 are all set It is equipped with simulation heater chain 570.

In other implementations, simulation heater chain 570 can be by comprising inductance should when being applied to PS type ballast Ballast exports the electric current of high frequency, flows through inductance, generates certain induction reactance (principle with above-mentioned, be not repeated herein), the circuit Conducting, to simulate filament.

Simulation heater chain in certain present embodiment, which also can be used, simulates heater chain as shown in Fig. 3 B-F scheme, Or it is other, such as negative temperature coefficient resister (NTC), as long as being able to achieve lighting initial stage simulation filament pre-heating.

In other implementations, can also be without using simulation heater chain 570, LED daylight lamp is not applied and PS at this time Type ballast.

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

Next the movement of description the present embodiment:

When LED daylight lamp is used for electric ballast, simulation heater chain, capacitor of the signal through side of ballast output 541 discharge tube DB1 into rectification branch and the other side simulation heater chain, first rectification branch after supply LED module.At this moment DB1 work should choose fast recovery type in exchange occasion.

LED daylight lamp for meet an urgent need occasion when, ballast export simulation heater chain of the unidirectional pulse formula signal through side, LED module is supplied after compatible with capacitance 1510, the simulation heater chain of rectification branch and the other side, the first rectification branch.At this moment Signal is without DB1.

Compared with Fig. 3 E, the position discharge tube DB1 adjustment (configuration is before rectifying branch), in this way design is advantageous in that, LED Fluorescent lamp for meet an urgent need occasion when, voltage is lower than the activation threshold value of discharge tube DB1 sometimes, at this moment DB1 end, reach its touching It is connected again when sending out threshold value, in this way the flashing of initiation fluorescent tube.

In the present embodiment, the threshold value of discharge tube DB1 chooses 300V~800V, preferably selection 350V~600V, above-mentioned side 420V is chosen in case.

In the present embodiment, filter capacitor can choose thin-film type capacitance or patch type capacitor；It, should if choose patch type capacitor Capacitor is set to power panel, the capacitor of power panel connection lower section be arranged perforation, the perforation can reduce patch capacitor by The noise that piezoelectric effect causes.The shape of perforation can be, round, and ellipse is rectangular etc..

Certainly, in other examples, it can all be arranged at the configuration patch capacitor field of power panel (power module) and wear Hole.

It should be noted that component described in the above-mentioned topological project listed is the isoboles of the component, in reality The component can be composed of according to certain rules multiple when border is applied.

Next, description Fig. 3 A- Fig. 3 B embodiment in ballast compatible circuit 1510, ballast compatible circuit 1510 it is preferable The circuit of embodiment is as shown in figs. 4a-4e.In Fig. 4 A- Fig. 4 E illustrated embodiment, the LED daylight lamp further include it is two-way can Control silicon TR；The first end of the discharge tube DB1/561 connects the first end of the bidirectional triode thyristor TR；The discharge tube DB1/ 561 second end connects the triggering end of the bidirectional triode thyristor TR.

Ballast compatible circuit 1510 shown in Fig. 4 A includes: bidirectional triode thyristor TR, discharge tube 561；1 end of discharge tube 561 connects It is connected to the end a, 2 sections of triggering ends for being connected to bidirectional triode thyristor TR, 2 sections of bidirectional triode thyristor TR are connected to the end 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 includes: bidirectional triode thyristor TR, discharge tube 561,562, capacitor 563；Electric discharge 1 end of pipe 561 is connected to 1 end at the end a, 2 sections of 1 ends for being connected to discharge tube 562 and capacitor 563；2 ends of discharge tube 562 connect 2 sections to 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 setting Threshold 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 value touching of setting Bidirectional triode thyristor TR is sent out, at this moment bidirectional triode thyristor TR conducting (i.e. a, b are connected between end, start LED fluorescent 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.

Ballast compatible circuit 1510 shown in Fig. 4 C is with Fig. 4 B in difference: replacing discharge tube 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；Capacitor 563 range, 2~50nF choose 10nF in the present embodiment.The voltage threshold of discharge tube 561 is greater than two-way two in the present embodiment The voltage threshold of pole pipe 564.

Ballast 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.

Ballast compatible circuit 1510 shown in Fig. 4 E is with Fig. 4 B in difference: 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 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.

In the embodiment having, using discharge tube DB1 scheme when, it is also possible to the scheme of Fig. 4 A, Fig. 4 B, Fig. 4 C, Fig. 4 E. At this moment ballast compatible circuit (such as scheme of Fig. 3 F) can be omitted in LED daylight lamp scheme.

It should be noted that would be compatible with circuit in the utility model embodiment is expressed as ballast compatible circuit, the two is simultaneously Indistinction, the expression way in only different embodiments is different, and compatible circuit and ballast compatible circuit are that LED daylight lamp is simultaneous Hold different types of ballast to use, improves the compatibility of LED daylight lamp.

In some embodiments, the compatible circuit 1510 can be when the electric current of the external drive signal be greater than predetermined value The current limiting capacitance 541 is accessed into circuit, and is connected when the electric current of the external drive signal is less than predetermined value.Specifically, As illustrated in figure 4f, the compatible circuit 1510 includes: control unit 5562, switch unit 5563 and sampling unit 5564；It is described Sampling unit 5564 forms sampled voltage according to the external drive signal；The switch unit 5563 is big in the sampled voltage The compatible circuit 1510 is disconnected when preset value the current limiting capacitance 541 is accessed circuit, and small in the sampled voltage The compatible circuit 1510 is connected when preset value；Described control unit 5562 is used to open according to sampled voltage control Close the cut-off and conducting of unit 5563.

Ballast compatible circuit 1510 shown in Fig. 4 F includes: rectification unit 5561, control unit 5562, switch unit 5563 And sampling unit 5564；

Rectification unit 5561 provides electric energy to control unit 5562 for rectifying the electric current for flowing into LED daylight lamp；

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；The tie point of diode 515 and diode 516 is electrically connected to the end A and diode 517 and diode 518 Tie point be electrically connected to the end B, pass through the end A, the end B be electrically connected 541 (not shown) of capacitor both ends.

Control unit 5562 includes diode 519, resistance 4568, capacitor 4569 branch in sequential series, which uses In providing the driving power of IC chip 4561, wherein the anode of diode 519 is electrically connected diode 517 and diode 515 Cathode；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 4562 can choose p-type MOS switch.

Embodiment shown in Fig. 4 F is that can be used in Fig. 3 C or 3D or 3E in scheme.

In Fig. 4 G- Fig. 4 I illustrated embodiment, the compatible circuit 1510/5510/7510/8510 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.

Specifically, the compatible circuit 5510/7510/8510 includes bidirectional triode thyristor 5511/7511/8511, two-way two Pole pipe 5514/7514/8513, first capacitor 5516/7516/8517, first resistor 5518/7518/8515；It is described it is two-way can The end A/1 end of control silicon 5511/7511/8511 is electrically connected one end of the current limiting capacitance 541, the bidirectional triode thyristor 5511/ 7511/8511 other end is electrically connected one end and the current limiting capacitance 541 of the first capacitor 5516/7516/8517 The other end；The triggering end of the bidirectional triode thyristor 5511/7511/8511 is electrically connected the bilateral diode 5514/7514/ 8513 one end；The other end of the bilateral diode 5514/7514/8513 is electrically connected the one of the first resistor 5518 The other end of end and the first capacitor 5516/7516/8517；Described in the other end of the first resistor 5518 is electrically connected One end of first capacitor 5516/7516/8517 and the end A of the bidirectional triode thyristor 5511/7511/8511/1 end.

In Fig. 4 G- Fig. 4 I illustrated embodiment, which can also include protective device 5513/8512；The guarantor The both ends of protection unit are respectively coupled to the other end and the current limiting capacitance 541 of the bidirectional triode thyristor 5511/7511/8511 The other end；The protective device be used for when thereon temperature or electric current reach the threshold value of setting when be triggered or starting protection.Its In, the protective device 5513/8512 can be current insurance silk.

Further, the first capacitor 8517, which is parallel with, releases energy resistance 8518；The energy resistance 8518 of releasing can consume institute State the energy that external drive signal generates first capacitor 8517 so that the voltage of the first capacitor 8517 be not up to it is described The trigger voltage of bilateral diode 8514.Wherein, the resistance value for releasing energy resistance 8518 chooses 1K ohm to 1000K ohm.It is excellent Choosing, the resistance value for releasing energy resistance 8518 is 470K ohm.

Fig. 4 G is the embodiment of ballast compatible circuit in Fig. 3 C or 3D or 3E.Compatible circuit 5510；Include: two-way controllable Silicon 5511, inductance 5512, protective device 5513, bilateral diode 5514, resistance 5515, capacitor 5516, capacitor 5517, resistance 5518；1 end of bidirectional triode thyristor 5511 is electrically connected one end through the end A electric connection 541 (not shown) of capacitor behind the end A, two-way Silicon-controlled 5511 other end is electrically connected the end a of inductance 5512, and the end b of inductance 5512 is electrically connected the one of protective device 5513 End, the other end of protective device 5513 are electrically connected the other end of 541 (not shown) of capacitor through the end B；Bidirectional triode thyristor 5511 Triggering end is electrically connected one end of bilateral diode 5514, and the other end of bilateral diode 5514 is electrically connected the one of resistance 5518 End and one end of capacitor 5516, the end B of capacitor 5516 are electrically connected the end a of inductance 5512, and the end b of resistance 5518 is electrically connected electricity One end of resistance 5515 and one end of capacitor 5517, the other end of resistance 5515 are electrically connected 1 end of bidirectional triode thyristor 5511；Capacitor 5517 end b is electrically connected the end B of capacitor 5516 and the end a of inductance 5512.

In above-described embodiment, the capacitance of capacitor 5517 is much larger than the capacitance of capacitor 5516 when selection, usually selection capacitor 5516 capacitance is the 1/10~1/300 of the capacitance of capacitor 5517.The capacitance of capacitor 5517 chooses 100nf~1000nf, preferably Selection 300nf~500nf, choose 470nf in the present embodiment.The capacitance of capacitor 5516 chooses 1nf~10nf, it is preferred that chooses 1nf~5nf, 2nf. is chosen in the present embodiment and design in this way is being advantageous in that, when being applied to emergency occasion, shortening bidirectional triode thyristor 5511 service time again.In some cases, bilateral diode is not achieved in the voltage (after a period of time) of capacitor 5516 5514 activation threshold value, bilateral diode 5514 end, and the electric current for flowing through bidirectional triode thyristor 5511 maintains the dimension of conducting lower than it When holding electric current (generally bi-directional silicon-controlled maintenance electric current is between 3~10mA, preferably selection 6mA), bidirectional triode thyristor 5511 Cut-off.Since the capacitance of capacitor 5517 is larger, which charges via resistance 5518 to capacitor 5516, and capacitor 5516 is very Reach the activation threshold value of bilateral diode 5514 fastly, 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, and prevents capacitor 5517 when being large current discharge to double It is impacted to diode 5514.

As shown at figure 4h it is the schematic diagram of another ballast compatible circuit, distinguishes and be shown in Fig. 4 H and Fig. 4 G, capacitor Energy component 5519 is released in parallel connection on 5516.

It is as shown in fig. 41 the schematic diagram of ballast compatible circuit.As shown in fig. 41, by B3, the end B4 is electrically connected capacitor 541 (not shown)；The difference of Fig. 4 I and Fig. 4 H is: saved in compatible circuit scheme shown in Fig. 4 I protective device 7513 (and By the protective device 7513 be configured to 541 series connection of (current limliting) capacitor, as shown in Figure 3 G), i.e., protective device 7513 by with electricity Feel 7512 concatenated branches (as shown in Fig. 4 G-H) be adjusted to in the concatenated circuit major loop of capacitor 541 (as shown in Fig. 3 G).

As shown in fig. 4j, Fig. 4 J is the topological schematic diagram of ballast compatible circuit 1510 in Fig. 3 H.Specifically, compatible circuit 8510；Include: bidirectional triode thyristor 8511, protective device 8512, bilateral diode 8513, resistance 8514, resistance 8515, capacitor 8516, capacitor 8517, releasing can component 8518；

The end A of bidirectional triode thyristor 8511 is electrically connected one end through the end B3 electric connection 541 (not shown) of capacitor behind the end B3, The other end of bidirectional triode thyristor 8511 is electrically connected the end a of protective device 8512；The end other end electrical property B4 of protective device 8512 It is connected to one end of discharge tube DB1 (not shown) afterwards；The triggering end of bidirectional triode thyristor 8511 is electrically connected bilateral diode 8513 One end；The other end of bilateral diode 8513 be electrically connected to the end X (one end of resistance 8515, capacitor 8517 one end, release energy One end of component 8518 is respectively and electrically connected to the end X；The other end for releasing energy component 8518 is electrically connected a of protective device 8512 The other end of end and bidirectional triode thyristor 8511；The end B of capacitor 7517 is electrically connected the end a of protective device 8512 and two-way controllable The other end of silicon 8511 and the other end for releasing energy component 8518；The end b of capacitor 8516 be electrically connected protective device 8512 the end a and The other end of bidirectional triode thyristor 8511 and release can the other end of component 8518 and the end B of capacitor 8517；The end b of resistance 8515 is electrical Connect one end of resistance 8514 and one end of capacitor 8516；The other end of resistance 8514 is electrically connected the A of bidirectional triode thyristor 7511 End and the end B3.

It connects to be described below and describes ballast compatible circuit in conjunction with the ballast compatible circuit scheme of Fig. 4 J and the scheme of Fig. 3 H Mechanism is acted,

It applies in the occasion of electric ballast, the ac signal of electric ballast work output high frequency flows through capacitor 541 and discharge tube DB1.

It applies in the occasion of emergency ballast, if electric current flows through capacitor when emergency ballast output is ac signal 541；

If output is DC signal or unidirectional pulse formula (direct current) signal, the capacitor 541 and discharge tube are bypassed DB1；

It is specific:

The electric signal is added in the both ends of capacitor 541 and discharge tube DB1 branch when after energization, and capacitor 8516 passes through resistance 8514 It charging, capacitor 8517 charges by resistance 8515, after continuing for some time, the voltage of capacitor 8517, capacitor 8516 It gradually rises, the voltage of capacitor 8517 is more than the threshold values of bilateral diode 8513 (sometimes referred to as two-way trigger tube), two-way two pole Pipe 8513 is connected, and triggers the triggering end (sometimes referred to as gate pole) of bidirectional triode thyristor 8511, the at this moment triggering of bidirectional triode thyristor 8511 A constant current is flowed through at end, and bidirectional triode thyristor 8511 is connected, to bypass the branch of the capacitor 541 Yu discharge tube DB1 series connection.

Originally it states in embodiment, protective device 8512 is fuse, preferably chooses rated current type fuse, rated value 100~150mA is chosen, chooses 125mA in above scheme.The protective device 5513 is used in electric ballast occasion, it is two-way can Silicon 5511 is controlled by false triggering, the high frequency high current for causing electric ballast to export flows into branch (this phase where protective device When in entering by mistake through contingency mode), thus trigger protection device.Under contingency mode, the electric current of emergency ballast output is usually not more than 50mA is crossed, and under electric ballast mode, the electric current of electric ballast output is usually in 200mA or so.

In other embodiments, it is configured with inductance (its connection such as Fig. 4 H) before protective device 8512, inductance has suppression The effect of current break processed, also can be improved the virtual value of electric current, and then the brightness of fluorescent tube can be improved.Inductance has afterflow (corresponding The pulse DC electric signal that anxious ballast issues carries out afterflow, to maintain bidirectional triode thyristor constant conduction), the effect of energy storage, The maximized emergency ballast that absorbs exports electricity.The inductance value of inductance is chosen with 4H scheme.

In the present embodiment, the mechanism in parallel for releasing energy component 8518 is with the mechanism for releasing energy component 5519 in Fig. 4 H:

IS type, PS type 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 8511 (as shown in oblique line with the arrow in Fig. 5)；Direct current biasing electricity Pressure can make capacitor 8517 voltage (through accumulation after a period of time) improve to bilateral diode 8513 activation threshold value, two-way two Pole pipe 8513 is connected, and triggers bidirectional triode thyristor 8511, and then enter by mistake through contingency mode, causes LED daylight lamp normal in this way Work.For this purpose, the branch circuit parallel connection one in capacitor 8517 releases energy component (such as releasing energy resistance), this releases energy component to release by the direct current The energy of biasing, such bilateral diode 8513 will not be triggered, and then bidirectional triode thyristor 8511 will not be triggered, to improve The compatibility of LED daylight lamp.

In above scheme, using release can 8517 accumulation of resistance consumption capacitor energy, make capacitor 8517 voltage will not on The trigger voltage of bilateral diode 8513 is risen to, and then bidirectional triode thyristor 8511 will not be triggered.Improve the compatibility of LED daylight lamp Property.

In above-described embodiment, energy component 8518 is released, resistance value chooses 1K ohm~1M ohm；It preferably chooses, 1K ohm ~1000K ohm.This programme chooses 470K ohm.In addition this releases energy component release due to electric ballast itself direct current biasing Outside the caused energy to charge to capacitor 8517, also releasable bidirectional triode thyristor draws since heated rear both sides equivalent resistance is inconsistent The leakage current of hair, the energy (electric energy) to charge to capacitor 7517.

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.

It needs to point out, in above-described embodiment, " electric connection " of description can be direct electrical connection, can also For electric signal connection." signal " can be regarded as " signal " in above-described embodiment.

It needs to point out, in other embodiments, for same root LED daylight lamp, " releases energy in circuit Circuit ", " ballast compatible circuit ", " simulation heater chain ", " protective device ", " Thermal Cutoffs ", " current limiting capacitance ", " electricity In the features such as sense ", " releasing energy component ", embodiment above-mentioned is quoted from, one or more of features 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, it is above-mentioned to refer to " simulation heater chain " feature with several for LED light The different presentation scheme of kind can be applied in combination between the LED daylight lamp of the different embodiments of compatible PS type.

In the pin design of LED straight lamp, each single pin (totally two pins) of both-end, each double pins of both-end can be The framework of (totally four pins).

In the tube design of LED straight lamp, glass material is can be used in fluorescent tube, and outside is cased with heat shrinkage film or its inner surface It is coated with diffusion barrier.Combination (the component of metal material of engineering plastics material or engineering plastics or metal material can be used in fluorescent tube To reinforce the intensity of fluorescent tube).

In the filter circuit design of power supply mould group, Single Capacitance or π type filter circuit can have, after filtering out rectification Radio-frequency component in signal, and the direct current signal for providing low ripple is filtered signal.Furthermore filter circuit also may include coupling Filter unit between pin and rectification circuit, electromagnetic interference caused by the circuit to reduce LED light.

In the design of power supply mould group, power supply mould group can be configured to combination (such as 2 modules of multiple module boards (power panel) Combination), it is respectively arranged in the lamp cap of lamp two sides.Component, fuse, the ballast of the simulation heater chain of power module are compatible Component, current limiting capacitance, the discharge tube DB1 of circuit, which pass through, to distribute rationally in power panel；The component and compatible circuit of LED module In rectification branch component and first rectification branch component be all set to lamp plate.

In LED module design, LED module may include be connected in parallel to each other multi-string LED component (that is, single LED chip, Or the LED group of LED modules with different colors chip composition is issued when work) go here and there, the LED component in each LED component string can be connected to each other And form netted connection.

That is, features described above can be made to arbitrary permutation and combination in the absence of conflict, and it is used for LED straight tube The improvement of lamp.

The utility model is hereinbefore disclosed with preferred embodiment, and so being familiar with the technology person should be understood that the reality It applies example to be only used for describing the utility model, and is not construed as limitation the scope of the utility model.It should be noted that all and reality Example equivalent variation and displacement are applied, should all be set as being covered by the scope of the utility model.Therefore, the protection model of the utility model It encloses when being subject to the scope of which is defined in the appended claims.

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 (19)

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；

Rectification circuit is used to rectify the external drive signal, to generate rectified signal；

Filter unit (520) is used to be filtered the rectified signal, to generate filtered signal；

LED module (530) is used to receive the filtered 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)；

Compatible circuit (1510/5510/7510/8510)；The both ends of the current limiting capacitance (541) are respectively coupled to the compatible circuit Both ends, and the compatible circuit is used to make the compatible different types of town of the LED daylight lamp according to the external drive signal Flow device；The compatible circuit (5510/1510/7510/8510) is configured as: when the external drive signal is AC signal When, the electric current that the external drive signal generates flows through the current limiting capacitance (541)；And

Discharge tube (DB1/561) is series at the rectification circuit and the LED daylight lamp end with the current limiting capacitance (541) Pin between.

2. LED daylight lamp as described in claim 1, it is characterised in that: the concatenated current limiting capacitance (541) and discharge tube (DB1) in parallel with the compatible circuit (1510).

3. LED daylight lamp as claimed in claim 2, which is characterized in that the rectification circuit couples the LED module (530) And including the first rectification unit and the second rectification unit, first rectification unit includes diode, second rectification unit Including diode；The current limiting capacitance (541) and the compatible circuit (1510) in parallel is coupled to second rectification unit And between the pin of the LED daylight lamp one end；First rectification unit be coupled to the LED module (530) with it is described Between the pin of LED daylight lamp the other end.

4. LED daylight lamp as claimed in claim 3, which is characterized in that second rectification unit includes concatenated two One diode (511,512), tie point coupling between two first diodes (the 511,512) current limiting capacitance in parallel (541) common connecting point between the compatible circuit (1510)；

First rectification unit includes concatenated two the second diodes (513,514), two second diodes (513, 514) tie point between couples the pin of described LED daylight lamp the other end.

5. LED daylight lamp as claimed in claim 3, which is characterized in that second rectification unit includes concatenated two One diode (513,514), tie point coupling between described two first diodes (513,514) current limliting electricity in parallel Hold a common connecting point between (541) and the compatible circuit (1510)；

First rectification unit includes four the second diodes (511,512,511a, 512a), wherein two the second diodes Tie point between (511,512) couples a pin (A1) of described LED daylight lamp the other end, and the second diode of another two Tie point between (511a, 512a) couples another pin (A2) of described LED daylight lamp the other end.

6. LED daylight lamp a method as claimed in any one of claims 1 to 5, which is characterized in that the LED module (530) includes LED Unit (630), the discharge tube (DB1) and the current limiting capacitance (541) are connected with the LED unit (630).

7. LED daylight lamp a method as claimed in any one of claims 1 to 5, 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. 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.

9. LED daylight lamp a method as claimed in any one of claims 1 to 5, which is characterized in that the compatible circuit (1510/5510/ 7510/8510) be configured as: when the external drive signal is DC signal, the compatible circuit is by the external drive Dynamic signal triggering and conducting, therefore current limiting capacitance (541) described in the current bypass of external drive signal generation.

10. LED daylight lamp as claimed in claim 9, which is characterized in that the compatible circuit (5510/7510/8510) includes Bidirectional triode thyristor (5511/7511/8511), bilateral diode (5514/7514/8513), first capacitor (5516/7516/ 8517), first resistor (5518/7518/8515)；The end A/1 end of the bidirectional triode thyristor (5511/7511/8511) electrically connects One end of the current limiting capacitance (541) is connect, described in the other end of the bidirectional triode thyristor (5511/7511/8511) is electrically connected One end of first capacitor (5516/7516/8517) and the other end of the current limiting capacitance (541)；The bidirectional triode thyristor (5511/7511/8511) triggering end is electrically connected one end of the bilateral diode (5514/7514/8513)；It is described two-way One end of the other end electric connection first resistor (5518) of diode (5514/7514/8513) and first electricity Hold the other end of (5516/7516/8517)；The other end of the first resistor (5518) is electrically connected the first capacitor (5516/7516/8517) end A/1 end of one end and the bidirectional triode thyristor (5511/7511/8511).

11. the LED daylight lamp as described in claim 1-5,8,10 are any, which is characterized in that the discharge tube (DB1) can make LED daylight lamp Delayed conducting from external drive signal input.

12. the LED daylight lamp as described in claim 1-5,8,10 are any, which is characterized in that the LED daylight lamp further includes double To silicon-controlled (TR)；The first end of the discharge tube (DB1/561) connects the first end of the bidirectional triode thyristor (TR)；It is described to put The second end of fulgurite (DB1/561) connects the triggering end of the bidirectional triode thyristor (TR).

13. the LED daylight lamp as described in claim 1-5,8,10 are any, it is characterised in that: further include protective device (5513/ 8512)；The both ends of the protective device are respectively coupled to the compatible circuit and the current limiting capacitance (541)；The protection dress Set for when thereon temperature or electric current reach the threshold value of setting when be triggered or starting protection.

14. LED daylight lamp as claimed in claim 10, it is characterised in that: further include protective device (5513/8512)；It is described The both ends of protective device are respectively coupled to the other end and the current limiting capacitance of the bidirectional triode thyristor (5511/7511/8511) (541) the other end；The protective device be used for when thereon temperature or electric current reach the threshold value of setting when be triggered or start Protection.

15. LED daylight lamp as claimed in claim 13, it is characterised in that: the protective device (5513/8512) is electric current guarantor Dangerous silk.

16. LED daylight lamp as claimed in claim 10, it is characterised in that: the first capacitor (8517), which is parallel with, releases energy electricity It hinders (8518)；The energy resistance (8518) of releasing can consume the energy that the external drive signal generates first capacitor (8517), So that the voltage of the first capacitor (8517) is not up to the trigger voltage of the bilateral diode (8514).

17. LED daylight lamp as claimed in claim 16, it is characterised in that: the resistance value for releasing energy resistance (8518) chooses 1K Ohm is to 1000K ohm.

18. LED daylight lamp as claimed in claim 17, it is characterised in that: the resistance value for releasing energy resistance (8518) is 470K Ohm.

19. LED daylight lamp as described in claim 1, it is characterised in that: the both ends of the fluorescent tube are equipped with lamp cap；The LED mould Block (530) includes lamp plate (2) and the LED component (632) being set on the lamp plate (2)；The rectification circuit, the filtering Unit and the compatible circuit (1510/5510/7510/8510) are set on the power module in the lamp cap；The electricity Source module is electrically connected by a pad and the lamp plate (2).