CN206320551U - LED straight lamps - Google Patents

Abstract

The utility model discloses a kind of LED straight lamps, including fluorescent tube, the LED lamp panel in fluorescent tube, the rectification circuit for connecting LED lamp panel, the lamp tube ends respectively have two pins, and the rectification circuit includes the first rectification circuit and the second rectification circuit；The first end of first rectification circuit is electrically connected via the first current-limiting circuit with two pins of the first end of the fluorescent tube, and the second end of first rectification circuit connects the first input end of LED lamp panel；The first end of second rectification circuit is electrically connected via the second current-limiting circuit with two pins at the second end of the fluorescent tube, and the second end of second rectification circuit connects the second input of LED lamp panel；One of input of the LED lamp panel is electrically connected with high-voltage triggering circuit.

Description

LED straight lamps

Patent Office of the People's Republic of China, Application No. 201510557717.0, invention name were submitted this application claims on 09 06th, 2015 The referred to as priority of the Chinese patent application of " LED straight lamps ", entire contents are hereby incorporated by reference in the application.

Patent Office of the People's Republic of China, Application No. 201510595173.7, invention name were submitted this application claims on 09 18th, 2015 The referred to as priority of the Chinese patent application of " LED straight lamps ", entire contents are hereby incorporated by reference in the application.

Technical field

The utility model is related to field of lighting appliances, and in particular to a kind of LED straight lamps.

Background technology

LED is semiconductor light-emitting-diode, is a kind of semiconductor devices of solid-state, and electricity directly can be converted into light by it. LED electricity-saving lamps are to use high brightness white light-emitting diode light emitting source, and light efficiency is high, little power consumption, long lifespan, easy to control, non-maintaining, peace Loopful is protected；It is solid cold light source of new generation, photochromic soft, gorgeous, rich and varied, low-loss, low energy consumption, environmental protection are applicable Family, market, bank, hospital, hotel, other various public places of restaurant are illuminated for a long time.Without direct current is dodged, eyes are played Good protective effect, is desk lamp, the optimal selection of torch.LED straight lamps generally comprise fluorescent tube, in fluorescent tube and with light The lamp plate in source, and power supply is provided with the lamp holder of lamp tube ends, lamp holder, carried out electrically by lamp plate between light source and power supply Connection.

Current LED straight lamps replace traditional fluorescent lamp step by step.But the existing substantial amounts of fluorescent lighting fixture in market Electric ballast is generally fitted with, it is output as exchange, and LED straight lamps use direct current, therefore there is LED straight lamps The problem of mutually compatible with existing fluorescent lighting fixture.

The content of the invention

The utility model provides new LED straight lamps, to solve the above problems.

A kind of LED straight lamps of the present utility model include fluorescent tube, the LED lamp panel in fluorescent tube, connect the whole of LED lamp panel Current circuit, the lamp tube ends respectively have two pins, and the rectification circuit includes the first rectification circuit and the second rectification circuit；Institute The first end for stating the first rectification circuit is electrically connected via the first current-limiting circuit with two pins of the first end of the fluorescent tube, described Second end of the first rectification circuit connects the first input end of LED lamp panel；The first end of second rectification circuit is via second Current-limiting circuit is electrically connected with two pins at the second end of the fluorescent tube, the second end connection LED of second rectification circuit Second input of plate；The LED straight lamps, which further have, includes voltage control device in power supply module, the power supply module, For controlling the power supply module to the break-make of the power supply of the LED lamp panel.

Alternatively, the voltage control device is bidirectional triode thyristor or bidirectional trigger diode.

Alternatively, the voltage control device comprises at least bidirectional triode thyristor and bidirectional trigger diode.

Alternatively, the control voltage of the voltage control device turns on the power supply module in 400V~700V to described The power supply of LED lamp panel.

Alternatively, resistance, electric capacity, inductance or its combination are included in the current-limiting circuit.

Alternatively, including the electric capacity that is connected with two inputs of first rectification circuit or the second rectification circuit of two ends And resistance.

Alternatively, the capacitance of the electric capacity is 10NF-1UF, and the resistance of the resistance is 1K~20K Ω.

Alternatively, the input of LED lamp panel concatenates the current-limiting resistance in parallel with high-voltage triggering circuit.

Alternatively, the resistance of the current-limiting resistance is 750K Ω~1.5M Ω.

Alternatively, described two inputs of LED lamp panel and filter capacitor is connect.

Alternatively, filament artificial circuit is coupled between two pins of same one end of the fluorescent tube, filament emulation electricity Electric capacity and resistance in parallel are included in road.

Another LED straight lamps of the present utility model, including two ends have in the fluorescent tube and fluorescent tube of pin and include LED The LED lamp panel of module, it is characterised in that the LED straight lamps also include the first rectification circuit, the second rectification circuit, wherein institute State the first rectification circuit and each self-contained two diodes of the second rectification circuit；The pin of the fluorescent tube first end, the second end Pin is electrically connected with first rectification circuit, the second rectification circuit respectively；First rectification circuit, the second rectification circuit with The LED module electrical connection, wherein the positive pole of the LED module connects first rectification circuit and the second rectification circuit respectively In two diodes negative electrode, and the anode of described two diodes connects the pin and second of the fluorescent tube first end respectively The pin at end；And the negative pole of the LED module connects in first rectification circuit and the second rectification circuit two two grades respectively The anode of pipe, and the negative electrode of described two diodes connects the pin of the fluorescent tube first end and the pin at the second end respectively.

Alternatively, also including end points change-over circuit, the end points change-over circuit be coupled to the pin of the fluorescent tube first end with Between first rectification circuit, the electric current of first rectification circuit is flowed through for limiting.

Alternatively, first rectification circuit and the second rectification circuit are half-wave rectifying circuit or full-wave rectifying circuit.

Alternatively, the end points change-over circuit includes resistance and electric capacity.

Alternatively, described LED straight lamps further include filter circuit, the positive pole of the filter circuit and the LED module It is in parallel with negative pole, and including resistance and electric capacity parallel with one another.

According to the technical solution of the utility model, rectification circuit is connected with LED lamp panel, realizes and is provided to LED lamp panel Direct current is so as to making it being capable of normal work；The course of work of fluorescent tube is preferably simulated using high-voltage triggering circuit, because This is applied to compatible with existing fluorescent lighting fixture.

Brief description of the drawings

Fig. 1 is the stereogram of the LED straight lamps of the embodiment of the utility model one；

Fig. 2A is the three-dimensional exploded view of the LED straight lamps of the embodiment of the utility model one；

Fig. 2 B show the power supply architecture in the LED straight lamps of the embodiment of the utility model one；

Fig. 3 shown in the embodiment LED straight lamps of the utility model one, lamp plate be flexible circuit board and with the print of power supply The stereochemical structure that printed circuit board is combined；

Fig. 4 is the structure chart of a Fig. 3 change case；

Fig. 5 A are that the application circuit square of the power supply module of the LED straight lamps according to the embodiment of the utility model one is illustrated Figure.

Fig. 5 B are that the application circuit square of the power supply module of the LED straight lamps according to the embodiment of the utility model one is illustrated Figure.

Fig. 5 C are the circuit box schematic diagram of the LED according to the embodiment of the utility model one.

Fig. 5 D are that the application circuit square of the power supply module of the LED straight lamps according to the embodiment of the utility model one is illustrated Figure.

Fig. 5 E are the circuit box schematic diagram of the LED according to the embodiment of the utility model one.

Fig. 6 A are the circuit diagram of the rectification circuit according to the embodiment of the utility model one.

Fig. 6 B are the circuit diagram of the rectification circuit according to the embodiment of the utility model one.

Fig. 6 C are the circuit diagram of the rectification circuit according to the embodiment of the utility model one.

Fig. 6 D are the circuit diagram of the rectification circuit according to the embodiment of the utility model one.

Fig. 7 A are the circuit diagram of the end points change-over circuit according to the embodiment of the utility model one.

Fig. 7 B are the circuit diagram of the end points change-over circuit according to the embodiment of the utility model one.

Fig. 7 C are the circuit diagram of the end points change-over circuit according to the embodiment of the utility model one.

Fig. 7 D are the circuit diagram of the end points change-over circuit according to the embodiment of the utility model one.

Fig. 8 A are the circuit box schematic diagram of the filter circuit according to the embodiment of the utility model one.

Fig. 8 B are the circuit diagram of the filter unit according to the embodiment of the utility model one.

Fig. 8 C are the circuit diagram of the filter unit according to the embodiment of the utility model one.

Fig. 8 D are the circuit diagram of the filter unit according to the embodiment of the utility model one.

Fig. 8 E are the circuit box schematic diagram of the filter unit according to the embodiment of the utility model one.

Fig. 9 A are the circuit diagram of the LED module according to the embodiment of the utility model one.

Fig. 9 B are the circuit diagram of the LED module according to the embodiment of the utility model one.

Fig. 9 C are the cabling schematic diagram of the LED module according to the embodiment of the utility model one.

Fig. 9 D are the cabling schematic diagram of the LED module according to the embodiment of the utility model one.

Fig. 9 E are the cabling schematic diagram of the LED module according to the embodiment of the utility model one.

Figure 10 A are the application circuit block schematic diagram of the power supply module of the LED according to the embodiment of the utility model one.

Figure 10 B are the circuit box schematic diagram of the drive circuit according to the embodiment of the utility model one.

Figure 10 C are the circuit diagram of the drive circuit according to the embodiment of the utility model one.

Figure 10 D are the circuit diagram of the drive circuit according to the embodiment of the utility model one.

Figure 10 E are the circuit diagram of the drive circuit according to the embodiment of the utility model one.

Figure 10 F are the circuit diagram of the drive circuit according to the embodiment of the utility model one.

Figure 10 G are the circuit box schematic diagram of the drive circuit according to the embodiment of the utility model one.

Figure 10 H are area's line relation schematic diagram of the voltage Vin and electric current Iout according to the preferred embodiment of the utility model one.

Figure 11 A are the application circuit block schematic diagram of the power supply module of the LED according to the embodiment of the utility model one.

Figure 11 B are the circuit diagram of the anti-flicker circuit according to the preferred embodiment of the utility model one.

Figure 12 A are the application circuit block schematic diagram of the power supply module of the LED according to the embodiment of the utility model one.

Figure 12 B are the circuit diagram of the protection circuit according to the preferred embodiment of the utility model one.

Figure 13 A are the application circuit block schematic diagram of the power supply module of the LED according to the embodiment of the utility model one.

Figure 13 B are the circuit diagram of the mode switching circuit according to the embodiment of the utility model one.

Figure 13 C are the circuit diagram of the mode switching circuit according to the embodiment of the utility model one.

Figure 13 D are the circuit diagram of the mode switching circuit according to the embodiment of the utility model one.

Figure 13 E are the circuit diagram of the mode switching circuit according to the embodiment of the utility model one.

Figure 13 F are the circuit diagram of the mode switching circuit according to the embodiment of the utility model one.

Figure 13 G are the circuit diagram of the mode switching circuit according to the embodiment of the utility model one.

Figure 13 H are the circuit diagram of the mode switching circuit according to the embodiment of the utility model one.

Figure 13 I are the circuit diagram of the mode switching circuit according to the embodiment of the utility model one.

Figure 14 A are the application circuit block schematic diagram of the power supply module of the LED according to the embodiment of the utility model one.

Figure 14 B are the application circuit block schematic diagram of the power supply module of the LED according to the embodiment of the utility model one.

Figure 14 C are the circuit configuration schematic diagram of the ballast compatible circuit according to the utility model preferred embodiment.

Figure 14 D are the application circuit block schematic diagram of the power supply module of the LED according to the embodiment of the utility model one.

Figure 14 E are the application circuit block schematic diagram of the power supply module of the LED according to the embodiment of the utility model one.

Figure 14 F are the circuit diagram of the ballast compatible circuit according to the embodiment of the utility model one.

Figure 14 G are that the application circuit square of the power supply module of the LED straight lamps according to the embodiment of the utility model one is illustrated Figure.

Figure 14 H are the circuit diagram of the ballast compatible circuit according to the embodiment of the utility model one.

Figure 14 I are the circuit diagram of the ballast compatible circuit according to the embodiment of the utility model one.

Figure 15 A are that the application circuit square of the power supply module of the LED straight lamps according to the embodiment of the utility model one is illustrated Figure.

Figure 15 B are that the application circuit square of the power supply module of the LED straight lamps according to the embodiment of the utility model one is illustrated Figure.

Figure 15 C are that the application circuit square of the power supply module of the LED straight lamps according to the embodiment of the utility model one is illustrated Figure.

Figure 15 D are the circuit diagram of the ballast compatible circuit according to the embodiment of the utility model one.

Figure 16 A are that the application circuit square of the power supply module of the LED straight lamps according to the embodiment of the utility model one is illustrated Figure.

Figure 16 B are the circuit diagram of the filament artificial circuit according to the embodiment of the utility model one.

Figure 16 C are the circuit diagram of the filament artificial circuit according to the embodiment of the utility model one.

Figure 16 D are the circuit diagram of the filament artificial circuit according to the embodiment of the utility model one.

Figure 16 E are the circuit diagram of the filament artificial circuit according to the embodiment of the utility model one.

Figure 16 F are the circuit diagram of the filament artificial circuit according to the embodiment of the utility model one.

Figure 17 A are that the application circuit square of the power supply module of the LED straight lamps according to the embodiment of the utility model one is illustrated Figure.

Figure 17 B are the circuit diagram of the overvoltage crowbar according to the utility model preferred embodiment.

Figure 18 A are that the application circuit square of the power supply module of the LED straight lamps according to the embodiment of the utility model one is illustrated Figure.

Figure 18 B are that the application circuit square of the power supply module of the LED straight lamps according to the embodiment of the utility model one is illustrated Figure.

Figure 18 C are the circuit box schematic diagram of the ballast circuit for detecting according to the utility model preferred embodiment.

Figure 18 D are the circuit diagram of the ballast circuit for detecting according to the embodiment of the utility model one.

Figure 18 E are the circuit diagram of the ballast circuit for detecting according to the embodiment of the utility model one.

Figure 19 A are that the application circuit square of the power supply module of the LED straight lamps according to the embodiment of the utility model one is illustrated Figure.

Figure 19 B are that the application circuit square of the power supply module of the LED straight lamps according to the embodiment of the utility model one is illustrated Figure.

Figure 19 C are the circuit diagram of the auxiliary power module according to the utility model preferred embodiment.

Figure 20 is that the application circuit square of the power supply module of the LED straight lamps according to the embodiment of the utility model one is illustrated Figure.

Embodiment

Inventor of the present utility model is on the basis of glass lamp, it is proposed that a kind of new LED straight lamps, to solve the back of the body The problem of being mentioned in scape technology and above mentioned problem.

It is understandable to enable above-mentioned purpose of the present utility model, feature and advantage to become apparent, below in conjunction with the accompanying drawings to this The specific embodiment of utility model is described in detail.

It refer in Fig. 1 and Fig. 2, each embodiment of the utility model there is provided a kind of LED straight lamps, it includes：One fluorescent tube 1, One lamp plate 2 in fluorescent tube 1, and it is respectively arranged on two lamp holders 3 at the two ends of fluorescent tube 1.Wherein fluorescent tube 1 can use plastic lantern In pipe or glass lamp, an embodiment, the size of the lamp holder is identical, and LED straight lamps are using tool strengthening section Glass lamp, with the electric shock accidents for avoiding traditional glass fluorescent tube easily rupturable and rupture triggers by electric leakage, and plastics fluorescent tube The problem of easy aging.In other embodiments, the size of the lamp holder can be to differ, it is preferable that described smaller The size of lamp holder is the 30% to 80% of larger lamp holder size.

Refer to the glass lamp of the LED straight lamps that the utility model is proposed in Fig. 2, an embodiment have it is structure-reinforced End, is described as follows.Fluorescent tube 1 includes main part 102 and is located at the end 101 at the two ends of main part 102 respectively, and lamp holder 3 is sheathed on Outside end 101.Wherein, the external diameter of at least one end 101 is less than the external diameter of main part 102.In one embodiment, LED straight lamps Also include bonding agent piece 4, lamp plate insulation film 7 and light source film 8.Lamp plate insulation film 7 is applied to lamp plate 2 towards light source 202 On surface so that lamp plate 2 is not exposed, so as to play the insulating effect that lamp plate 2 is isolated from the outside.Reserved during gluing and light source 202 corresponding through holes 71, light source 202 is located in through hole 71.In another embodiment, lamp holder 3 is in addition to including insulation tube, also including one Magnetic conductive metal part 9, is installed on the inner peripheral surface of insulation tube, and be at least partially disposed at insulation tube inner peripheral surface and lamp tube end it Between, with fluorescent tube 1 radially with overlapping part.

One end of power supply 5 has male plug 51, and the other end has metal ferrule 52, and the end of lamp plate 2 is provided with female plug 201, lamp First 3 are provided with the hollow conductive pin 301 for being used for connecting external power source.The male plug 51 of power supply 5 is inserted in the female plug 201 of lamp plate 2, Metal ferrule 52 is inserted in the hollow conductive pin 301 of lamp holder 3.Now male plug 51 and female plug 201 are equivalent to adapter, for inciting somebody to action Power supply 5 and lamp plate 2 are electrically connected.After metal ferrule 52 is inserted in hollow conductive pin 301, impact hollow by outside stamping tool Conductive pin 301 so that slight deformation occurs for hollow conductive pin 301, so that the metal ferrule 52 fixed on power supply 5, and in fact Now it is electrically connected.

During energization, electric current passes sequentially through hollow conductive pin 301, metal ferrule 52, male plug 51 and female plug 201 and reaches lamp plate 2, and light source 202 is reached by lamp plate 2.In other embodiments, male plug 51, the connected mode of female plug 201 can not be used, and It can be replaced with conventional wires routing mode, i.e., using a traditional plain conductor, by one end of plain conductor and power supply electricity Connection, the other end is electrically connected with lamp plate 2, but the mode of wire routing connection is possible to have asking for fracture in transportation It is slightly worse in topic, quality.In other embodiments, power supply 5 can be also configured on printed circuit board (PCB), then with male plug 51, female plug 201 Connected mode or be electrically connected with wire routing mode with lamp plate 2, the structure of power supply 5 is then not limited to modular pattern.

In the present embodiment, there is metal ferrule 52 to connect lamp holder for the input of power supply 5, another side output end can according to lamp plate 2 connection mode sets male plug, conductive metal connecting hole or pad.Can between the lamp plate 2 and the output end of power supply 5 that separate To be connected with female plug 201 through male plug 51, or connected by wire routing, the outer layer of wire can wrap up insulating sleeve as Be electrically insulated protection.In addition, the output end of lamp plate 2 and power supply 5 can also pass through rivet nail joint, tin cream gluing, welding or to lead The mode of line binding is directly linked together.It is consistent with the fixed form of foregoing lamp plate 2, a side surface of flexible circuit board The inner peripheral surface of fluorescent tube 1 is bonded and fixed to by bonding agent piece 4, and the two ends of flexible circuit board can select fixed or not solid On the inner peripheral surface for being scheduled on fluorescent tube 1.

If two ends of the lamp plate 2 along the axial direction of fluorescent tube 1 are not fixed on the inner peripheral surface of fluorescent tube 1, if connected using wire, It is follow-up move during, because two ends are free, easily shaken during follow-up move, thus make it possible to wire It is broken.Therefore the connected mode prioritizing selection of lamp plate 2 and power supply 5 is welding, specifically, directly can be got over lamp plate 2 In the output end that power supply 5 is welded in after the transition part of strengthening section structure, remove the use of wire from, improve the stabilization of product quality Property.Now lamp plate 2 need not set female plug 201, and the output end of power supply 5 is also without setting male plug 51, and the specific practice can be The output end of power supply 5 is reserved into power pad, and stays on power pad tin, make it that the thickness of the tin on pad increases, side Just weld, accordingly, also reserve light source pad on the end of lamp plate 2, and by the power pad of the output end of power supply 5 and lamp plate 2 Light source pad solder together.It is front by the plane definition where pad, then the connected mode of lamp plate 2 and power supply 5 is with two The positive pad docking of person is consolidated the most, but welding pressure head must be pressed in the back side of lamp plate 2 in welding, across lamp plate 2 Scolding tin is heated, the problem of being easier reliability occur.If hole will be outputed in the middle of the positive light source pad of lamp plate 2, then It is face-up superimposed upon on the positive power pad of power supply 5 to weld, then welds pressure head and directly scolding tin can be heated and melt Solution, to being relatively easy to realize on Practical Operation.

If the two ends of flexible circuit board are fixed on the inner peripheral surface of fluorescent tube 1, pay the utmost attention in flexible circuit board Upper setting female plug 201, then inserts female plug 201 by the male plug 51 of power supply 5 and realizes electrical connection.

Fig. 3 and Fig. 4 are refer to, in other embodiments, lamp plate 2 and power supply 5 that above-mentioned transmission welding manner is fixed It can be replaced with the sub-assembly 25 for the length circuit board for being equipped with power supply module 250.The sub-assembly 25 of length circuit board has one The short circuit board 253 of long circuit board 251 and one, long circuit board 251 and short circuit board 253 are fitted each other to be fixed through gluing mode, Short circuit board 253 is located at the long adjacent peripheral edges of circuit board 251.There is power supply module 25 on short circuit board 253, power supply is monolithically fabricated. Long circuit board 251 can be above-mentioned flexible circuit board or flexible base board as lamp plate 2, the longer electricity of the short material of circuit board 253 Road plate 251 is hard, to reach the effect of Power Support component 250.The length of short circuit board 253 is about 15 millimeters to 40 millimeters, compared with Good is 19 millimeters to 36 millimeters, and the length of long circuit board 251 can be 800 millimeters to 2800 millimeters, and preferably 1200 millimeters extremely 2400 millimeters.The ratio of short circuit board 253 and long circuit board 251 can be 1:20 to 1:200.

The mode of line layer 2a and power supply module 250 electrical connection of lamp plate 2 can have different be electrically connected according to actually used situation Connect mode.As shown in figure 3, power supply module 250 and long circuit board 251 (i.e. the line layer 2a of lamp plate 2) are all located at short circuit board 253 The same side, power supply module 250 is directly electrically connected with long circuit board 251.As shown in figure 4, power supply module 250 and long circuit board 251 (i.e. the line layer 2a of lamp plate 2) systems are located at the both sides of short circuit board 253 respectively, and power supply module 250 penetrates too short circuit board 253 and lamp plate 2 line layer 2a electrical connection.Spy gives explanation, and the sub-assembly 25 of the length circuit board of the present embodiment is omitted The situation that lamp plate 2 and power supply 5 are fixed with the mode of welding in previous embodiment, but first by long circuit board 251 and short electricity The gluing of road plate 253 is fixed, then the line layer 2a of power supply module 250 and lamp plate 2 is electrically connected.In addition, lamp plate 2 is as described above not One layer or double layer circuit plate are only limitted to, light source 202 is located at line layer 2a, passes through line layer 2a and the electrical communication of power supply 5.

In addition, in another embodiment, the sub-assembly 25 of length circuit board has a short circuit board of long circuit board 251 and one 253, long circuit board 251 can be above-mentioned lamp plate 2 flexible circuit board or flexible base board, lamp plate 2 include a line layer 2a with One dielectric layer 2b, it is first that dielectric layer 2b and short circuit board 253 is affixed with connecting method, afterwards, then line layer 2a is attached to Jie On electric layer 2b and extend on short circuit board 253, do not depart from the application model of the sub-assembly 25 of the utility model length circuit board Enclose.

In addition, in the foregoing embodiments, when lamp plate 2 and power supply 5 are to be fixed through welding manner, the end of lamp plate 2 On the inner peripheral surface for being not secured to fluorescent tube 1, it is impossible to which safe fixation supports power supply 5, in other embodiments, if power supply 5 must Must separately it be fixed in the lamp holder of the end of fluorescent tube 1, then lamp holder can be relatively long and have compressed the effective light-emitting area of fluorescent tube 1.This In another embodiment of utility model, used lamp plate is rigid aluminium base, because its end can be relatively fixed in fluorescent tube 1 End, and power supply 5 is by the way of aluminium base 22 then using being weldingly fixed on above the end of aluminium base 22, one is easy to welding The implementation of technique, two, which carry out lamp holder 3, need not have the space for the total length for being enough to carry power supply 5 and can shorten length, so The effective light-emitting area of fluorescent tube can be increased.In addition, in the foregoing embodiments, on power supply 5 in addition to being equiped with power supply module, The formation of hollow conductive pin 301 for also needing to separately welding metal wire and lamp holder 3 is electrically connected.In the present embodiment, Ke Yizhi Connect and be used on power supply 5, be electrically connected as the conductive pin 53 and lamp holder 3 of power supply module, be not required to additionally weld other lead again Line, is more beneficial for the simplification of processing procedure.

Next the circuit design of explanation power supply module 250 and application.

Fig. 5 A are referred to, are the application circuit side of the power supply module of LED straight lamps according to the embodiment of the utility model one Block schematic diagram.AC power 508 is to provide ac supply signal.AC power 508 can be civil power, voltage range 100- 277V, frequency is 50 or 60Hz.Lamp tube drive circuit 505 receives the ac supply signal of AC power 508, and is converted into exchange Drive signal is with as external drive signal.Lamp tube drive circuit 505 can be electric ballast, the signal of civil power to be turned Change into high frequency, the alternating current drive signal of high pressure.The species of common electronicses ballast, for example：Instantaneous starting type (Instant Start) electric ballast, preheating start-up type (Program Start) electric ballast, quick-starting direct (Rapid Start) Electric ballast etc., LED straight lamps of the present utility model are applicable.The voltage of alternating current drive signal is more than 300V, preferable voltage Scope is 400-700V；Frequency is more than 10kHz, and preferable frequency range is 20k-50kHz.LED straight lamps 500 receive external drive Signal, in the present embodiment, external drive signal are the alternating current drive signal of lamp tube drive circuit 505, and are driven to emit light. In the present embodiment, LED straight lamps 500 are the driving framework of single ended power supply, same one end lamp holder of fluorescent tube have two pins 501, 502, pin 501,502 couples and (that is, is electrically connected with or direct or indirect connection) to lamp tube drive circuit 505 to receive exchange Drive signal.

It is worth noting that, lamp tube drive circuit 505 is omissible circuit, therefore indicated in the drawings with dotted line.When When lamp tube drive circuit 505 is omitted, AC power 508 is coupled with pin 501,502.Now, pin 501,502 receives alternating current The ac supply signal that source 508 is provided, with as external drive signal.

In addition to the application of above-mentioned single ended power supply, LED straight lamps 500 of the present utility model can also be applied to both-end list The circuit structure of pin.Fig. 5 B are referred to, are the application of the power supply module of LED straight lamps according to the embodiment of the utility model one Circuit box schematic diagram.Compared to shown in Fig. 5 A, pin 501,502 is respectively placed in the relative both-end of fluorescent tube of LED straight lamps 500 Lamp holder is to form each single pin of both-end, and the connection of remaining circuit and function are then identical with circuit shown in Fig. 5 A.

Then, Fig. 5 C are referred to, are the circuit box schematic diagram of the LED according to the embodiment of the utility model one.LED Power supply module mainly include rectification circuit 510, filter circuit 520 and LED drive module 530.Rectification circuit 510 connects Pin 501,502, to receive external drive signal, and carries out rectification, then by rectification output end 511,512 to outside drive signal Export rectified signal.External drive signal in this can be the alternating current drive signal or AC power letter in Fig. 5 A and Fig. 5 B Number, it is possibly even operation of the direct current signal without influence LED.Filter circuit 520 is coupled with first rectification circuit, To be filtered to rectified signal；I.e. filter circuit 520 couples rectification output end 511,512 to receive rectified signal, And rectified signal is filtered, then by filtering after output end 521,522 output filtered signal.LED drive module 530 Couple, with signal after accepting filter and light with filter circuit 520；I.e. LED drive module 530 coupling filtering after output end 521, 522 with signal after accepting filter, and then drives the LED unit (not drawing) in LED drive module 530 to light.This part please be detailed The explanation of embodiment after seeing.

It is worth noting that, in the present embodiment, the number of output end 521,522 after rectification output end 511,512 and filtering Amount is two, and then according between rectification circuit 510, filter circuit 520 and each circuit of LED drive module 530 during practical application It can be one or more that end points is coupled between the increase in demand or reduction of signal transmission, i.e., each circuit.

Furthermore, each embodiment of the power supply module of the power supply module of the LED shown in Fig. 5 C and following LED, except suitable Outside for the LED straight lamps shown in Fig. 5 A and Fig. 5 B, for including the illuminating circuit framework two pins to transmit electric power, example Such as：Bulb lamp, PAL lamps etc. are applicable.

Fig. 5 D are referred to, are the application circuit side of the power supply module of LED straight lamps according to the embodiment of the utility model one Block schematic diagram.AC power 508 is to provide ac supply signal.Lamp tube drive circuit 505 receives the friendship of AC power 508 Power supply signal is flowed, and is converted into alternating current drive signal.LED straight lamps 500 receive the exchange driving letter of lamp tube drive circuit 505 Number, and be driven to emit light.In the present embodiment, LED straight lamps 500 are both-end (each pair of pin) power supply, one end lamp holder of fluorescent tube With pin 501,502, other end lamp holder has pin 503,504.Pin 501,502,503 and 504 is coupled to fluorescent tube driving Circuit 505 to receive alternating current drive signal jointly, to drive the LED unit (not drawing) in LED straight lamps 500 to light.Exchange Power supply 508 can be civil power, and lamp tube drive circuit 505 can be stabilizer or electric ballast.

Fig. 5 E are referred to, are the circuit box schematic diagram of the LED according to the embodiment of the utility model one.The electricity of LED Source component mainly includes rectification circuit 510, filter circuit 520, LED drive module 530 and rectification circuit 540.Rectification circuit 510 coupling pins 501,502, to the external drive signal received and rectification pin 501,502 is transmitted；Rectification circuit 540 Pin 503,504 is coupled, to the external drive signal received and rectification pin 503,504 is transmitted.That is, LED Power supply module in rectification output end 511,512 can export rectified signal comprising two rectification circuits 510,540 are common.Filter Wave circuit 520 couples rectification output end 511,512 to receive rectified signal, and rectified signal is filtered, Ran Houyou Output end 521,522 exports filtered signal after filtering.Output end 521,522 is with reception after the coupling filtering of LED drive module 530 Filtered signal, then drives the LED unit (not drawing) in LED drive module 530 to light.

The power supply module of the LED of the present embodiment can be applied to Fig. 5 D Double-End Source framework.It is worth noting that, by There is rectification circuit 510,540 simultaneously in the power supply module of the LED of the present embodiment, can also apply to Fig. 5 A, B single-ended electricity Source framework, to receive external drive signal (comprising ac supply signal, alternating current drive signal in previous embodiment etc.).When So, in addition to the present embodiment, the power supply module of the LED of remaining each embodiment can also be applied to the bogie of direct current signal Structure.

Fig. 6 A are referred to, are the circuit diagram of the rectification circuit according to the embodiment of the utility model one.Rectification circuit 610 Comprising commutation diode 611,612,613 and 614, to carry out full-wave rectification to received signal.Commutation diode 611 Positive pole couples rectification output end 512, negative pole coupling pin 502.The positive pole coupling rectification output end 512 of commutation diode 612, bears Pole couples pin 501.The positive pole coupling pin 502 of commutation diode 613, negative pole coupling rectification output end 511.Commutation diode 614 positive pole coupling pin 501, negative pole coupling rectification output end 511.

When the signal that pin 501,502 is received is AC signal, the operation of rectification circuit 610 is described as follows.Work as exchange When signal is in positive half-wave, AC signal is sequentially flowed into after pin 501, commutation diode 614 and rectification output end 511, and Sequentially flowed out after rectified output end 512, commutation diode 611 and pin 502.When AC signal is in negative half-wave, exchange Signal is sequentially flowed into after pin 502, commutation diode 613 and rectification output end 511, and sequentially rectified output end 512, whole Flow and flowed out after diode 612 and pin 501.Therefore, no matter AC signal is in positive half-wave or negative half-wave, rectification circuit 610 The positive pole of rectified signal is respectively positioned on rectification output end 511, and negative pole is respectively positioned on rectification output end 512.According to aforesaid operations explanation, The rectified signal that rectification circuit 610 is exported is full wave rectified signal.

When pin 501,502 couples dc source and receives direct current signal, the operation of rectification circuit 610 is described as follows. When pin 501 couples the anode of dc source and pin 502 couples the negative terminal of dc source, direct current signal is sequentially through pin 501st, flowed into after commutation diode 614 and rectification output end 511, and sequentially rectified output end 512, the and of commutation diode 611 Flowed out after pin 502.When pin 501 couples the negative terminal of dc source and pin 502 couples the anode of dc source, exchange letter Number sequentially flowed into after pin 502, commutation diode 613 and rectification output end 511, and sequentially rectified output end 512, rectification Flowed out after diode 612 and pin 501.Similarly, no matter how direct current signal inputs through pin 501,502, rectification circuit The positive pole of 610 rectified signal is respectively positioned on rectification output end 511, and negative pole is respectively positioned on rectification output end 512.

Therefore, though the present embodiment the received signal of rectification circuit 610 be AC signal or direct current signal, Correct output rectified signal.

Fig. 6 B are referred to, are the circuit diagram of the rectification circuit according to the embodiment of the utility model one.Rectification circuit 710 Comprising commutation diode 711 and 712, to carry out halfwave rectifier to received signal.The anode coupling of commutation diode 711 Pin 502, negative terminal coupling rectification output end 511.The anode coupling rectification output end 511 of commutation diode 712, negative terminal connects Pin 501.Rectification output end 512 can be omitted or be grounded depending on practical application.

Then illustrate that the operation of rectification circuit 710 is as follows.

When AC signal is in positive half-wave, AC signal is higher than defeated in pin 502 in the signal level that pin 501 is inputted The signal level entered.Now, commutation diode 711 and 712 is in inverse inclined cut-off state, and rectification circuit 710 stops output Rectified signal.When AC signal is in negative half-wave, AC signal is less than in pin in the signal level that pin 501 is inputted The signal level of 502 inputs.Now, commutation diode 711 and 712 is in along inclined conducting state, and AC signal is via whole Stream diode 711, rectification output end 511 and flow into, and by rectification output end 512 or another circuit or earth terminal stream of LED Go out.According to aforesaid operations explanation, the rectified signal that rectification circuit 710 is exported is half wave rectified signal.

Fig. 6 C are referred to, are the circuit diagram of the rectification circuit according to the embodiment of the utility model one.Rectification circuit 810 Comprising rectification unit 815 and end points change-over circuit 541, to carry out halfwave rectifier.In the present embodiment, rectification unit 815 is half Ripple rectification circuit, comprising commutation diode 811 and 812, to carry out halfwave rectifier.The anode coupling of commutation diode 811 is whole Flow output end 512, negative terminal coupling half-wave tie point 819.The anode coupling half-wave tie point 819 of commutation diode 812, negative terminal coupling Connect rectification output end 511.The coupling of end points change-over circuit 541 half-wave tie point 819, and pin 501 and 502, to by pin 501 and 502 received signals are transferred to half-wave tie point 819.It is whole by the end points translation function of end points change-over circuit 541 Current circuit 810 can provide two inputs (end points of coupling pin 501 and 502) and two output end (rectification output ends 511 And 512).

Then illustrate that the operation of rectification circuit 810 is as follows.

When AC signal is in positive half-wave, AC signal sequentially changes electricity through pin 501 (or pin 502), end points Flowed into after road 541, half-wave tie point 819, commutation diode 812 and rectification output end 511, and by another circuit stream of LED Go out.When AC signal is in negative half-wave, AC signal is simultaneously flowed into by another circuit of LED, then rectified output end 512nd, commutation diode 811, half-wave tie point 819, end points change-over circuit 541 and pin 501 (or pin 502) flow out afterwards.

It is worth noting that, end points change-over circuit 541 can simultaneously have comprising resistance, electric capacity, inductance or its combination The functions such as current limliting/pressure limiting, protection, current/voltage regulation, play the part of the role of current-limiting circuit.The explanation of these functions refer in After illustrate.

In practical application, rectification unit 815 and end points change-over circuit 541 can be exchanged without influenceing halfwave rectifier function. Fig. 6 D are referred to, are the circuit diagram of the rectification circuit according to the embodiment of the utility model one.The anode of commutation diode 811 Coupling pin 502, the negative terminal coupling pin 501 of commutation diode 812, and the negative terminal and commutation diode of commutation diode 811 812 anode couples half-wave tie point 819 simultaneously.The coupling half-wave of end points change-over circuit 541 tie point 819, and rectification output End 511 and 512.When AC signal is in positive half-wave, AC signal is simultaneously flowed into by another circuit of LED, then rectified Output end 512 (or rectification output end 511), the half-wave tie point 819 of end points change-over circuit 541, commutation diode 812 and connect Flowed out after pin 501.When AC signal is in negative half-wave, AC signal sequentially connects through pin 502, commutation diode 811, half-wave Contact 819, end points change-over circuit 541 and rectification output end 511 (or rectification output end 512) are flowed into afterwards, and by the another of LED Circuit flows out.

What deserves to be explained is, in the embodiment shown in Fig. 6 C and Fig. 6 D and end points change-over circuit 541 can be omitted, therefore It is indicated with dashed lines.Fig. 6 C are omitted after end points change-over circuit 541, and pin 501 and 502 is coupled to half-wave tie point 819.Fig. 6 D are saved Slightly after end points change-over circuit 541, rectification output end 511 and 512 is coupled to half-wave tie point 819.

When the pin 501 and 502 of rectification circuit shown in Fig. 6 A to Fig. 6 D is changed to pin 503 and 504, you can be used as figure Rectification circuit 540 shown in 5E.

Then Fig. 5 C, Fig. 5 E is arranged in pairs or groups to illustrate the selection and combination of rectification circuit 510,540.

The rectification circuit 510 of Fig. 5 C illustrated embodiments can use the rectification circuit 610 shown in Fig. 6 A.

The rectification circuit 510 of Fig. 5 E illustrated embodiments, the 540 any rectification circuits that can use in Fig. 6 A to Fig. 6 D, And the rectification circuit shown in Fig. 6 C and Fig. 6 D can also omit end points change-over circuit 541 without influenceing the operation of LED straight lamps required Rectification function.When rectification circuit of the rectification circuit 510,540 from Fig. 6 B to Fig. 6 D halfwave rectifier, with AC signal In positive half-wave or negative half-wave, rectification circuit 510 and 540 one of them responsible inflow, another responsible outflow.Furthermore, rectified current If Fig. 6 C or Fig. 6 D, or Fig. 6 C and Fig. 6 D each one are selected in road 510,540, then the end points change-over circuit 541 of one of them simultaneously Can have current limliting/pressure limiting, protection, the function of current/voltage regulation, another end points change-over circuit 541 can be omitted.

Fig. 7 A are referred to, are the circuit diagram of the end points change-over circuit according to the embodiment of the utility model one.End points turns Change circuit 641 and include electric capacity 642, one end of electric capacity 642 couples pin 501 and 502, other end coupling half-wave tie point simultaneously 819.Electric capacity 642 has equivalent impedance to AC signal.The frequency of AC signal is lower, and the equivalent impedance of electric capacity 642 is got over Greatly；The frequency of AC signal is higher, and the equivalent impedance of electric capacity 642 is smaller.Therefore, the end points change-over circuit 641 of the present embodiment In electric capacity 642 with high-pass filtering act on.Furthermore, end points change-over circuit 641 is to connect with the LED unit in LED, and is had Have under equiva lent impedance, there is current limliting, the effect of pressure limiting to LED unit, the electric current and cross-pressure of LED unit can be avoided too high and damaged Evil LED unit.In addition, by coordinate AC signal frequency select electric capacity 642 capacitance, can more have to LED unit electric current, The effect of voltage-regulation.

It is worth noting that, end points change-over circuit 641 can additionally include electric capacity 645 and/or electric capacity 646.Electric capacity 645 1 End coupling half-wave tie point 819, other end coupling pin 503.The one end of electric capacity 646 coupling half-wave tie point 819, other end coupling Pin 504.That is, electric capacity 645 and 646 adjusts the electric capacity of electric capacity as electric current with half-wave tie point 819 as common connection end 642 coupling common connection ends and pin 501 and 502.Under such circuit framework, one of pin 501 and 502 and pin There are one of the electric capacity 642 and 645 of series connection, or pin 501 and 502 to have the electric capacity connected between pin 504 between 503 642 and 646.By the equivalent impedance of the electric capacity of series connection, AC signal is by partial pressure.Please referring also to Fig. 5 E, according to series connection The ratio of the equivalent impedance of electric capacity, can control electric capacity 642 in rectification circuit 510 cross-pressure and filter circuit 520 and Cross-pressure in LED drive module 530, flows through the current limit of LED module of LED drive module 530 in a load current value Within, and avoid too high voltages to damage filter circuit 520 and LED drive module 530 simultaneously and reach protection filter circuit 520 and The effect of LED drive module 530.

Fig. 7 B are referred to, are the circuit diagram of the end points change-over circuit according to the embodiment of the utility model one.End points turns Change circuit 741 and include electric capacity 743 and 744.One end coupling pin 501 of electric capacity 743, other end coupling half-wave tie point 819.Electricity The one end for holding 744 couples pin 502, other end coupling half-wave tie point 819.Compared to the end points change-over circuit shown in Fig. 7 A 641, mainly electric capacity 642 is changed to two electric capacity 743 and 744 to end points change-over circuit 741 by system.The capacitance of electric capacity 743 and 744 can With identical, the received signal size of pin 501 and 502 can also be regarded and as difference.

Similarly, end points change-over circuit 741 can additionally include electric capacity 745 and/or electric capacity 746, be respectively coupled to pin 503 and 504.Thus, any in pin 501 and 502 have the electric capacity connected and reach partial pressure with any in pin 503 and 504 Effect and the function of protection.

Fig. 7 C are referred to, are the circuit diagram of the end points change-over circuit according to the embodiment of the utility model one.End points turns Change circuit 841 and include electric capacity 842,843 and 844.Electric capacity 842 and 843 is series between pin 501 and half-wave tie point 819.Electricity Hold 842 and 844 to be series between pin 502 and half-wave tie point 819.Under such circuit framework, electric capacity 842,843 and Any short circuit between 844, between pin 501 and the pin of half-wave tie point 819 and between 502 and half-wave tie point 819 still There is electric capacity and the still effect of current limiting.Therefore, when being got an electric shock for user's false touch LED, too high electricity can be avoided Stream flows through human body and causes user to get an electric shock and injure.

Similarly, end points change-over circuit 841 can additionally include electric capacity 845 and/or electric capacity 846, be respectively coupled to pin 503 and 504.Thus, any in pin 501 and 502 have the electric capacity connected and reach partial pressure with any in pin 503 and 504 Effect and the function of protection.

Fig. 7 D are referred to, are the circuit diagram of the end points change-over circuit according to the embodiment of the utility model one.End points turns Change circuit 941 and include fuse 947,948.The one end of fuse 947 couples pin 501, other end coupling half-wave tie point 819. The one end of fuse 948 couples pin 502, other end coupling half-wave tie point 819.Thereby, flowed through when pin 501 and 502 is any Electric current be higher than fuse 947 and 948 rated current when, fuse 947 and 948 will accordingly fuse and open a way, thereby Reach the function of overcurrent protection.

Certainly, the pin 501 and 502 in the embodiment of above-mentioned end points change-over circuit is changed to pin 503 and 504 and (and connect Pin 503 and 504 is changed to pin 501 and 502), you can conversion to rectification circuit 540.

The capacitance of electric capacity in above-mentioned end points change-over circuit embodiment is preferably between 100pF~100nF.Separately Outside, the electric capacity of two or more that electric capacity can be in parallel or series carrys out equivalent substitution.For example：Electric capacity 642,842 can use two Capacitances in series is replaced.The capacitance of one of 2 electric capacity can be chosen from the range of 1.0nF~2.5nF, preferably choose 1.5nF；Another is selected from 1.5nF~3.0nF scope, preferably chooses 2.2nF.

Fig. 8 A are referred to, are the circuit box schematic diagram of the filter circuit according to the embodiment of the utility model one.Painted in figure Go out rectification circuit 510 only to represent annexation, not filter circuit 520 includes rectification circuit 510.Filter circuit 520 is wrapped Containing filter unit 523, rectification output end 511 and 512 is coupled, to receive the rectified signal that rectification circuit is exported, and is filtered Filtered signal is exported after ripple in rectified signal.Therefore, the waveform of filtered signal compared with rectified signal waveform more Smoothly.Filter circuit 520 can also further include filter unit 524, be coupled between rectification circuit and corresponding pin, for example：Rectification Circuit 510 and pin 501, rectification circuit 510 and pin 502, rectification circuit 540 and pin 503 and rectification circuit 540 and pin 504, to be filtered to specific frequency, to filter the specific frequency of external drive signal.In the present embodiment, filter unit 524 are coupled between pin 501 and rectification circuit 510.Filter circuit 520 can also further include filter unit 525, be coupled to pin 501 and 502 one of them with rectification circuit 510 between the diode of one of them or one of pin 503 and 504 and rectification The diode of one of them of circuit 540, to reduce or filter electromagnetic interference (EMI).In the present embodiment, the coupling of filter unit 525 Between the diode (not drawing) for being connected to one of pin 501 and rectification circuit 510.Because filter unit 524 and 525 is visual Practical situations are added or omitted, and Gu Tuzhong is represented by dotted lines it.

Fig. 8 B are referred to, are the circuit diagram of the filter unit according to the embodiment of the utility model one.Filter unit 623 Include an electric capacity 625.One end coupling rectification output end 511 and filtering output end 521 of electric capacity 625, other end coupling rectification are defeated Go out end 512 and filtering output end 522, to carry out LPF to the rectified signal exported by rectification output end 511 and 512, Filtered signal is formed to filter the radio-frequency component in rectified signal, is then exported by filtering output end 521 and 522.

Fig. 8 C are referred to, are the circuit diagram of the filter unit according to the embodiment of the utility model one.Filter unit 723 For π type filter circuits, electric capacity 725, inductance 726 and electric capacity 727 are included.One end coupling rectification output end 511 of electric capacity 725 is simultaneously Simultaneously filtering output end 521, other end coupling rectification output end 512 and filtering output end 522 are coupled by inductance 726.Inductance 726 are coupled between rectification output end 511 and filtering output end 521.One end of electric capacity 727 is defeated by the coupling rectification of inductance 726 Go out end 511 and couple filtering output end 521 simultaneously, other end coupling rectification output end 512 and filtering output end 522.

From the point of view of on equivalent, filter unit 723 inductance 726 and electric capacity 727 compared with the filter unit more than 623 shown in Fig. 8 B.And And inductance 726 and electric capacity 727 are also with electric capacity 725, with LPF effect.Therefore, the filter unit 723 of the present embodiment compared to Filter unit 623 shown in Fig. 8 B, ability is filtered with more preferably high frequency, and the waveform of the filtered signal exported is more flat It is sliding.

The inductance value of inductance 726 in above-described embodiment is preferably the scope selected from 10nH~10mH.Electric capacity 625,725,727 Capacitance be preferably selected from 100pF~1uF scope.

Fig. 8 D are referred to, are the circuit diagram of the filter unit according to the embodiment of the utility model one.Filter unit 824 Include electric capacity 825 and inductance 828 in parallel.One end coupling pin 501 of electric capacity 825, other end coupling rectification output end 511, To carry out high-pass filtering to the external drive signal inputted by pin 501, to filter the low-frequency component in external drive signal.Electricity One end coupling pin 501 of sense 828, other end coupling rectification output end 511, with the external drive to being inputted by whole pin 501 Signal carries out LPF, to filter the radio-frequency component in external drive signal.Therefore, the combination of electric capacity 825 and inductance 828 can High impedance is presented to specific frequency in outside drive signal.It is, in parallel electric capacity and inductance to outside drive signal etc. Effect impedance is in being presented maximum in specific frequency.

It via the capacitance of electric capacity 825 and the inductance value of inductance 828 is suitably chosen, can be located at the centre frequency of high impedance In specific frequency, centre frequency isWherein L is the inductance value of inductance 828, and C is the capacitance of electric capacity 825.For example：Compared with Good centre frequency is in the range of 20-30kHz, and more preferably 25kHz, the LED with filter unit 824 may conform to UL certifications Safety requirement.

It is worth noting that, filter unit 824 can include resistance 829.Resistance 829 is coupled to pin 501 and rectification output Between end 511.Therefore, resistance 829 is connected with electric capacity 825 in parallel, inductance 828.For example, resistance 829 is coupled to pin Between 501 and electric capacity 825 in parallel and inductance 828, or resistance 829 is coupled to rectification output end 511 and electric capacity 825 in parallel Between inductance 828.In the present embodiment, resistance 829 is coupled between pin 501 and electric capacity 825 in parallel and inductance 828.Electricity The 829 Q values to adjust the lc circuit that electric capacity 825 and inductance 828 are constituted are hindered, to be more suitable for the application of different Q value requirement Environment.Because resistance 829 is inessential component, therefore it is represented by dotted lines in the present embodiment.

The capacitance of electric capacity 825 is preferably in the range of 10nF~2uF.The inductance value of inductance 828 is preferably less than 2mH, more Good is that, less than 1mH, can use air core inductor or I-shaped inductance.Resistance 829 is preferably more than 50 ohm, more preferably more than 500 Ohm.

In addition to the filter circuit shown in the above embodiments, traditional low pass or bandpass filter can be used as this reality It is used in new filter unit in filter circuit.

Fig. 8 E are referred to, are the circuit box schematic diagram of the filter unit according to the embodiment of the utility model one.In this reality Apply in example, filter unit 925 is arranged within the rectification circuit 610 shown in Fig. 6 A, with reduce rectification circuit 610 and/or other Electromagnetic interference caused by circuit (EMI).In the present embodiment, filter unit 925 include EMI electric capacity, be coupled to pin 501 with it is whole Between the anode of stream diode 614 and it is also coupled between the anode of pin 502 and commutation diode 613, is connect with reducing simultaneously Pin 501 and 502 receives electromagnetic interference adjoint during the positive half-wave transmission of alternating current drive signal.The EMI electric capacity of filter unit 925 It is also coupled between the negative terminal and pin 501 of commutation diode 612 and while is also coupled to the negative terminal and pin of commutation diode 611 Between 502, with reduce pin 501 and 502 the negative half-wave of reception alternating current drive signal transmit when adjoint electromagnetic interference.Also It is that rectification circuit 610 is full bridge rectifier and includes four poles 611,612,613 and 614 of rectification two, four commutation diodes 611st, two commutation diodes 611 and 613, the wherein anode and commutation diode of commutation diode 613 in 612,613 and 614 611 negative terminal connects to form another two rectification in one first filtering tie point, four commutation diodes 611,612,613 and 614 Diode 612 and 614, the negative terminal of the wherein anode of commutation diode 614 and commutation diode 612 connects to form one second filtering Tie point, the EMI electric capacity of filter unit 925 is coupled between the first filtering tie point and the second filtering tie point.

In addition, referring to Fig. 6 C and Fig. 7 A, Fig. 7 B and Fig. 7 C, similar, one of Fig. 7 A, Fig. 7 B and Fig. 7 C circuit In any electric capacity be coupled to any diode in the circuit with Fig. 6 C and pin 501 and 502 (or pin 503 and 504) between, therefore any or whole electric capacity in Fig. 7 A, Fig. 7 B and Fig. 7 C can be used as the EMI electric capacity of filter unit, And reach the function of the electromagnetic interference of reduction circuit.It is, the rectification circuit 510 in Fig. 5 C and Fig. 5 E can be halfwave rectifier Circuit and comprising two poles of rectification two, the anode of one of two commutation diodes connects another negative terminal formation half-wave connection Any or whole electric capacity in point, Fig. 7 A, Fig. 7 B and Fig. 7 C is coupled to the half-wave tie point and described of two commutation diodes One pin and second pin at least one；Or and Fig. 5 E in rectification circuit 540 can be half-wave rectifying circuit And comprising two poles of rectification two, the anode of one of two commutation diodes connects another negative terminal formation half-wave tie point, Any or whole electric capacity in Fig. 7 A, Fig. 7 B and Fig. 7 C is coupled to the half-wave tie point of two commutation diodes and described first connect Pin and second pin at least one.

It is worth noting that, the EMI electric capacity in Fig. 8 E illustrated embodiments can be as the filtering in Fig. 8 D illustrated embodiments The electric capacity of unit 824 and arranged in pairs or groups with the inductance of filter unit 824, and reach simultaneously and high impedance and reduction electricity be presented to specific frequency The function of magnetic disturbance.It is, when rectification circuit is full bridge rectifier, the electric capacity 825 of filter unit 824 is coupled to full-bridge Between first filtering tie point of rectification circuit and the second filtering tie point, when rectification circuit is half-wave rectifying circuit, filtering The electric capacity 825 of unit 824 is coupled to the half-wave tie point and first pin and second pin of half-wave rectifying circuit extremely It is one of few.

Fig. 9 A are referred to, are the circuit diagram of the LED module according to the embodiment of the utility model one.LED module 630 Anode couples filtering output end 521, negative terminal coupling output end 522.LED module 630 includes at least one LED unit 632.LED Unit 632 is connected in parallel to each other when being two or more.The anode of each LED unit couples the anode of LED module 630, to couple filter Wave output terminal 521；The negative terminal of each LED unit couples the negative terminal of LED module 630, to couple filtering output end 522.LED is mono- Member 632 includes at least one LED component 631.When LED component 631 is plural number, LED component 631 is connected into a string, first The anode of LED unit 632 belonging to the anode coupling of LED component 631, the negative terminal coupling of first LED component 631 next (the Two) LED component 631.And the anode of last LED component 631 couples the negative terminal of previous LED component 631, last The negative terminal of LED unit 632 belonging to the negative terminal coupling of LED component 631.

It is worth noting that, LED module 630 can produce current sense signal S531, represent LED module 630 flows through electricity Size is flowed, to be used as detecting, control LED module 630.

Fig. 9 B are referred to, are the circuit diagram of the LED module according to the embodiment of the utility model one.LED module 630 Anode couples filtering output end 521, negative terminal coupling output end 522.LED module 630 includes at least two LED units 732, and The anode of each LED unit 732 couples the anode of LED module 630, and negative terminal couples the negative terminal of LED module 630.LED is mono- Member 732 is comprising at least two LED components 731, and the connected mode of the LED component 731 in affiliated LED unit 732 is such as figure As 9A is described, the negative pole of LED component 731 and the positive pole of next LED component 731 are coupled, and first LED component 731 The positive pole of LED unit 732 belonging to positive pole coupling, and LED unit 732 belonging to the negative pole coupling of last LED component 731 Negative pole.Furthermore, also it is connected to each other between the LED unit 732 in the present embodiment.N-th of LED component of each LED unit 732 731 positive pole is connected to each other, and negative pole is also connected to each other.Therefore, the connection between the LED component of the LED module 630 of the present embodiment is Netted connection.

Compared to Figure 10 A to Figure 10 G embodiment, the LED drive module 530 of above-described embodiment comprising LED module 630 but Drive circuit is not included.

Similarly, the LED module 630 of the present embodiment can produce current sense signal S531, represent the stream of LED module 630 Through size of current, to be used as detecting, control LED module 630.

In addition, in practical application, the quantity for the LED component 731 that LED unit 732 is included is preferably 15-25, more preferably For 18-22.

Fig. 9 C are referred to, are the cabling schematic diagram of the LED module according to the embodiment of the utility model one.The present embodiment The annexation of LED component 831 is illustrated by taking three LED units as an example herein with shown in Fig. 9 B.Positive wire 834 is with bearing Polar conductor 835 receives drive signal, to provide electrical power to each LED component 831, for example：Positive wire 834 couples foregoing filter The filtering output end 521 of wave circuit 520, cathode conductor 835 couples the filtering output end 522 of foregoing filter circuit 520, to receive Filtered signal.For convenience of description, n-th in each LED unit is divided into same LED groups 833 in figure.

First LED component 831 in the connection LED unit of the leftmost side three of positive wire 834, the i.e. leftmost side as shown in the figure (left side) positive pole of three LED components in LED groups 833, and cathode conductor 835 connects last in three LED units LED component 831, i.e., (right side) negative pole of three LED components as shown in the figure in rightmost side LED groups 833.Each LED unit First LED component 831 negative pole, the positive pole of the positive pole of last LED component 831 and other LED components 831 and negative Pole is then connected through connecting wire 839.

In other words, the positive pole of three LED components 831 of leftmost side LED groups 833 is connected to each other through positive wire 834, Its negative pole is connected to each other through leftmost side connecting wire 839.The positive pole of three LED components 831 of the second from left LED groups 833 is through most Left side connecting wire 839 is connected to each other, and its negative pole is connected to each other through the connecting wire 839 of the second from left.Due to leftmost side LED groups The negative pole of 833 three LED components 831 and the positive pole of three LED components 831 of the second from left LED groups 833 are connected through the leftmost side Wire 839 is connected to each other, therefore the negative pole of the first of each LED unit LED component and the positive pole of second LED component are each other Connection.The rest may be inferred so as to form netted connection as shown in Figure 9 B.

It is worth noting that, be less than in connecting wire 839 with the width 836 of the positive pole coupling part of LED component 831 with The width 837 of the negative polarity connecting portion of LED component 831.The area of negative polarity connecting portion is set to be more than the area of positive pole coupling part. In addition, width 837 is less than the positive pole that connects one of them in neighbouring two LED components 831 in connecting wire 839 simultaneously and another Negative pole part width 838, make to be more than the area only with negative polarity connecting portion with the area of positive pole and cathode portion simultaneously And the area of positive pole coupling part.Therefore, such cabling framework contributes to the radiating of LED component.

In addition, positive wire 834 also includes positive wire 834a, cathode conductor 835 also includes negative wire 835a, The two ends of LED module are made to be respectively provided with positive pole and negative pole tie point.Such cabling framework can make other of the power supply module of LED Circuit, for example：Filter circuit 520, rectification circuit 510 and 540 positive pole at two ends and negative pole tie point coupling by either end or simultaneously It is connected to LED module, the elasticity of the configuration arrangement of increase side circuit.

Fig. 9 D are referred to, are the cabling schematic diagram of the LED module according to the embodiment of the utility model one.The present embodiment The annexation of LED component 931 with shown in Fig. 9 A, herein using three LED units and each LED unit comprising 7 LED components as Example is illustrated.Positive wire 934 receives drive signal with cathode conductor 935, to provide electrical power to each LED component 931, citing For：Positive wire 934 couples the filtering output end 521 of foregoing filter circuit 520, and cathode conductor 935 couples foregoing filtered electrical The filtering output end 522 on road 520, with signal after accepting filter.For convenience of description, by seven LED in each LED unit in figure Component clustering is into same LED groups 932.

Positive wire 934 connects (left side) positive pole of first (leftmost side) LED component 931 in every LED groups 932.It is negative Polar conductor 935 connects (right side) negative pole of last (rightmost side) LED component 931 in every LED groups 932.In every LED groups In 932, the negative pole of the LED component 931 of left connects right LED groups through connecting wire 939 in neighbouring two LED components 931 The positive pole of part 931.Thereby, the LED component of LED groups 932 is connected into a string.

It is worth noting that, connecting wire 939 to connect one of two adjacent LEDs component 931 negative pole and Another positive pole.The negative pole of the LED component 931 of last (rightmost side) of the cathode conductor 935 to connect each LED groups.Just The positive pole of the LED component 931 of first (leftmost side) of the polar conductor 934 to connect each LED groups.Therefore, its width and LED is supplied The area of dissipation of component according to said sequence from large to small.That is, the width 938 of connecting wire 939 is maximum, cathode conductor The width 937 of the 935 connection negative poles of LED component 931 takes second place, and the width 936 of the connection positive pole of LED component 931 of positive wire 934 is most It is small.Therefore, such cabling framework contributes to the radiating of LED component.

In addition, positive wire 934 also includes positive wire 934a, cathode conductor 935 also includes negative wire 935a, The two ends of LED module are made to be respectively provided with positive pole and negative pole tie point.Such cabling framework can make other of the power supply module of LED Circuit, for example：Filter circuit 520, rectification circuit 510 and 540 positive pole at two ends and negative pole tie point coupling by either end or simultaneously It is connected to LED module, the elasticity of the configuration arrangement of increase side circuit.

Furthermore, the cabling shown in Fig. 9 C and 53D can be realized with flexible circuit board.For example, bendable circuit Plate has individual layer line layer, the positive wire 834 that is formed with etching mode in Fig. 9 C, positive wire 834a, cathode conductor 835, It is negative wire 835a and positive wire 934 in connecting wire 839, and Fig. 9 D, positive wire 934a, cathode conductor 935, negative Pole lead 935a and connecting wire 939.

Fig. 9 E are referred to, are the cabling schematic diagram of the LED module according to the embodiment of the utility model one.The present embodiment system will The cabling of Fig. 9 C LED module is changed to double-deck line layer by individual layer line layer, mainly by positive wire 834a and negative wire 835a is changed to second layer metal layer.It is described as follows.

Flexible circuit board has double-deck line layer, including first line layer, dielectric layer and the second line layer.First Line Road floor and the second circuit interlayer are electrically isolated with dielectric layer.The first line layer of flexible circuit board is formed with etching mode Positive wire 834, cathode conductor 835 and connecting wire 839 in Fig. 9 E, to electrically connect the multiple LED component 831, for example： Electrically connect the multiple LED component and reticulate connection, the second line layer is with etching mode positive wire 834a, negative wire 835a, to electrically connect the filter circuit (filtering output end).And the positive pole of the first line layer in flexible circuit board Wire 834, cathode conductor 835 have layer tie point 834b and 835b.The positive wire 834a of second line layer, negative wire 835a has layer tie point 834c and 835c.Layer tie point 834b and 835b is relative with layer tie point 834c and 835c positions, uses To be electrically connected with positive wire 834 and positive wire 834a, and cathode conductor 835 and negative wire 835a.Preferably way It is to connect layer the tie point 834b and 835b of first layer metal layer position to layer is exposed by electric layer formation opening with lower section Contact 834c and 835c, are then welded with scolding tin, make positive wire 834 and positive wire 834a, and cathode conductor 835 and negative Pole lead 835a is electrically connected to each other.

Similarly, positive wire 934a and negative wire 935a can also be changed to by the cabling of the LED module shown in Fig. 9 D Second layer metal layer, and form the Wiring structure of double-level-metal layer.

It is worth noting that, the thickness of the second line layer of the flexible circuit board with bilayer conductive layer is preferably and compared It is thick in the thickness of first line layer, it can thereby reduce the line loss (pressure drop) on positive wire and negative wire.Furthermore, have Bilayer conductive layer flexible circuit board of the flexible circuit board compared to single metal layer, due to by the positive wire at two ends, Negative wire moves to the second layer, can reduce the width of flexible circuit board.On identical tool, the discharge of narrower substrate Quantity is more than wider substrate, therefore can improve the production efficiency of LED module.And with the bendable electricity of bilayer conductive layer Road plate relatively on be relatively easy to maintain shape, to increase the reliability of production, for example：The welding position during welding of LED component Accuracy.

As the deformation of such scheme, the utility model also provides a kind of LED straight lamps, the driving mould of the LED straight lamps At least part electronic building brick of block is arranged on lamp plate：Utilize PEC (printed electronic circuit, PEC：Printed Electronic Circuits), at least part electronic building brick is printed or is embedded on lamp plate by technology.

In one embodiment of the present utility model, the electronic building brick of drive module is provided entirely on lamp plate.It makes Process is as follows：Substrate preparation (flexible printed circuit preparation) → spray printing metal nano ink → spray printing passive block/active Device (drive module) → drying/sintering → spray printing interlayer connection projection → spray insulation ink → spray printing metal nano ink → Spray printing passive block and active device (the like formed required for multi-layer sheet) → sprayed surface welded disc → spraying welding resistance LED component is welded in agent.

, only need to be in lamp plate if the electronic building brick of drive module is provided entirely on lamp plate in above-mentioned the present embodiment Two ends by welding lead connect LED straight lamps pin, realize the electrical connection of pin and lamp plate.Thus without being again Drive module setting substrate, and then can further optimize the design of lamp holder.Preferably, drive module setting is the two of lamp plate End, so reduces influence of the heat of its work generation to LED component as far as possible.The present embodiment is welded because reducing, and improves drive module Overall reliability.

If part electronic building brick is printed on lamp plate into (such as resistance, electric capacity), and by big device such as：Inductance, electrolysis The electronic building bricks such as electric capacity are arranged in lamp holder.The manufacturing process of lamp plate is ibid.So by by part electronic building brick, being arranged on lamp On plate, drive module is reasonably laid out, to optimize the design of lamp holder.

Deformed as above-mentioned scheme, can also be realized by embedded mode and be arranged on the electronic building brick of drive module On lamp plate.I.e.：Electronic building brick is embedded on pliability lamp plate in embedded mode.Contain resistor-type/capacitor type preferably, can use Copper coated foil plate (CCL) or the method such as the related ink of silk-screen printing realize；Or realize that insertion is passive using inkjet technology The method of component, i.e., using ink-jet printer directly the electrically conductive ink as passive block and correlation function ink jet-printing to lamp plate On the position of interior setting.As the deformation of such scheme, passive block can also ink-jet printer directly using being used as passive block Electrically conductive ink and correlation function ink jet-printing on lamp plate).Then, handled or drying/sintering processes by UV light, formation is buried The lamp plate of embedding passive block.Being embedded in electronic building brick on lamp plate includes resistance, electric capacity and inductance；In other embodiments, have Source component is also suitable.By such design come the rational design for being laid out drive module and then reaching optimization lamp holder (due to portion Divide and use embedded resistance and electric capacity, the present embodiment has saved the printed circuit board surface space of preciousness, reduced printed circuit The size of plate simultaneously reduces its weight and thickness.Simultaneously because eliminating the pad of these resistance and electric capacity, (pad is print It is easiest to introduce the part of failure on printed circuit board), the reliability of drive module is also improved.Printing electricity will be shortened simultaneously The length of wire and allow greater compactness of device layout on the plate of road, thus improve electric property).

Illustrate the manufacture method of embedded capacitance, resistance below.

Usually using the method for embedded capacitance, using a kind of concept for being called distributed electrical perhaps plane capacitance.In copper Insulating barrier very thin in pressure on the basis of layer.Typically occur in pairs in the form of bus plane/stratum.Very thin insulating barrier makes Bus plane and the distance between stratum are very small.Such capacitance can also be realized by traditional plated through-hole.Substantially For, such method establishes a big parallel plate capacitance on circuit boards.

The product of some high-capacitances, some are distributed capacitor types, and other is discrete Embedded.By Barium titanate (a kind of material with high-k) is filled in insulating barrier to obtain higher capacitance.

The method for generally manufacturing embedded resistance is to use resistance stick.It is the tree doped with conductibility carbon or graphite Fat, as filler, is screen printed onto specified place, is then laminated into after treatment inside circuit board.Resistance is by metallizing Hole or micro- via are connected to other electronic building bricks on circuit board.Another method is Ohmega-Ply methods：It is double-metal layer Structure --- layers of copper constitutes resistor element with a thin nickel alloy layer, and they form the resistance relative to bottom of stratiform Device.Then by the etching to layers of copper and nickel alloy layer, the various nickel resistance with copper tip are formed.These resistors are laminated Into the internal layer of circuit board.

In one embodiment of the present utility model, wire is directly printed on to the inwall (being arranged to wire) of glass tube, LED component is directly against the inwall, to be electrically connected to each other by these wires.Preferably, straight using the chip form of LED component Connect on the wire for being attached to the inwall and (tie point be set at the two ends of wire, be connected with drive module by tie point LED component), After attaching, drop fluorescent material (the making LED straight lamps produce white light or the light of other colors when working) on the chip.

The luminous efficiency of LED component of the present utility model is more than 80lm/W, preferably 120 more than lm/W, is more preferably More than 160lm/W.LED component can be that the light of monochromatic LED chip blendes together white light through fluorescent material, the main wavelength of its spectrum For 430-460nm and 550-560nm, or 430-460nm, 540-560nm and 620-640nm.

Figure 10 A are referred to, are that the application circuit square of the power supply module of LED according to the embodiment of the utility model one shows It is intended to.Compared to shown in Fig. 5 E, the power supply module of the LED of the present embodiment includes rectification circuit 510 and 540, filter circuit 520th, LED drive module 530, and LED drive module 530 further includes drive circuit 1530 and LED module 630.Drive circuit 1530 be DC-to-DC switching circuit, couples filtering output end 521 and 522, with signal after accepting filter, and carries out electric power turn Change and exported so that filtered signal is converted into drive signal in drive output 1521 and 1522.The coupling driving of LED module 630 Output end 1521 and 1522, is lighted with receiving drive signal, and the electric current of preferably LED module 630 is stable at a scheduled current Value.LED module 630 can be found in Fig. 9 A to Fig. 9 D explanation.

It is worth noting that, rectification circuit 540 can omit for inessential component, therefore it is represented by dotted lines in figure.Also It is to say, the LED drive module 530 in embodiment shown in Fig. 5 A and Fig. 5 C can further include driving electricity such as Fig. 5 E embodiment Road 1530 and LED module 630.Therefore, the power supply module of the LED of the present embodiment can be also applied to single ended power supply, Double-End Source Applied environment, for example：Bulb lamp, PAL lamps etc. are applicable.

Figure 10 B are referred to, are the circuit box schematic diagram of the drive circuit according to the embodiment of the utility model one.Driving electricity Road includes controller 1531 and change-over circuit 1532, and electrical power conversion is carried out with the pattern of current source, to drive LED module to light. Change-over circuit 1532 includes on-off circuit 1535 and accumulator 1538.Change-over circuit 1532 couple filtering output end 521 and 522, signal after accepting filter, and according to the control of controller 1531, be converted into drive signal and by drive output 1521 and 1522 outputs, to drive LED module.Under the control of controller 1531, the drive signal that change-over circuit 1532 is exported is steady Determine electric current, and make LED module stabilized illumination.

Figure 10 C are referred to, are the circuit diagram of the drive circuit according to the embodiment of the utility model one.In this implementation Example, drive circuit 1630 is decompression DC to-DC switching circuit, comprising controller 1631 and change-over circuit, and change-over circuit bag Containing inductance 1632, fly-wheel diode 1633, electric capacity 1634 and switching switch 1635.Drive circuit 1630 couples filtering output end 521 and 522, the filtered signal of reception is converted into drive signal, drive output 1521 and 1522 is coupled in drive Between LED module.

In the present embodiment, switching switch 1635 is metal-oxide half field effect transistor, with control end, first end and second End.The first end of switching switch 1635 couples the positive pole of fly-wheel diode 1633, the second end coupling filtering output end 522, control Control of the end coupling controller 1631 to receive controller 1631 makes between first end and the second end on or off.Driving is defeated Go out end 1521 and couple filtering output ends 521, drive output 1522 couples one end of inductance 1632, and the other end of inductance 1632 The first end of coupling switching switch 1635.Electric capacity 1634 is coupled between drive output 1521 and 1522, with stabilized driving Voltage difference between output end 1521 and 1522.The negative terminal coupling drive output 1521 of fly-wheel diode 1633.

Next the running of explanation drive circuit 1630.

When controller 1631 determines the conducting and cut-off of switching switch 1635 according to current sense signal S535 and/or S531 Between, that is, control the dutycycle (Duty Cycle) of switching switch 1635 to adjust the size of drive signal.Current sense is believed Number S535 systems represent the size of current for flowing through switching switch 1635.The representative of current sense signal S535 systems flow through be coupled to driving it is defeated The size of current of the LED module gone out between end 1521 and 1522.According to current sense signal S531 and S535 any, controller 1631 can obtain the information for the electric power size that change-over circuit is changed.When switching switch 1635 is turned on, filtered signal Electric current is flowed into by filtering output end 521, and arrives LED module, inductance 1632, switching by electric capacity 1634 and drive output 1521 Flowed out after switch 1635 by filtering output end 522.Now, electric capacity 1634 and inductance 1632 carry out energy storage.When switching switch 1635 During cut-off, inductance 1632 and electric capacity 1634 discharge stored energy, and electric current is exported through the afterflow of fly-wheel diode 1633 to driving End 1521 makes LED module still continuous illumination.

It is worth noting that, the inessential component of electric capacity 1634 and can omit, therefore be represented by dotted lines in figure.Should at some With environment, the effect of stable LED module electric current can be reached by the characteristic of the change of inductance meeting resistive and electricity is omitted Hold 1634.

Figure 10 D are referred to, are the circuit diagram of the drive circuit according to the embodiment of the utility model one.In this implementation Example, drive circuit 1730 is voltage boosting dc to-DC switching circuit, comprising controller 1731 and change-over circuit, and change-over circuit bag Containing inductance 1732, fly-wheel diode 1733, electric capacity 1734 and switching switch 1735.Drive circuit 1730 will be by filtering output end 521 and 522 filtered signals received are converted into drive signal, are coupled in driving between drive output 1521 and 1522 LED module.

One end coupling filtering output end 521 of inductance 1732, the positive pole of other end coupling filter stream diode 1733 and switching The first end of switch 1735.The the second end coupling filtering output end 522 and drive output 1522 of switching switch 1735.Afterflow two The negative pole coupling drive output 1521 of pole pipe 1733.Electric capacity 1734 is coupled between drive output 1521 and 1522.

The control end of the coupling switching of controller 1731 switch 1735, according to current sense signal S531 and/or current sense Signal S535 switchs 1735 conducting and cut-off to control switching.When switching switch 1735 is turned on, electric current is by filtering output end 521 flow into, and flow through inductance 1732, switching switch 1735 after flowed out by filtering output end 522.Now, inductance 1732 is flowed through Electric current increases with the time, and inductance 1732 is in energy storage state.Meanwhile, electric capacity 1734 is in de-energized state, with lasting driving LED moulds Block lights.When switching switch 1735 ends, inductance 1732 is in de-energized state, and the electric current of inductance 1732 is reduced with the time.Electricity The electric current of sense 1732 flows to electric capacity 1734 and LED module through the afterflow of fly-wheel diode 1733.Now, electric capacity 1734 is in energy storage State.

It is worth noting that, electric capacity 1734 is omissible component, it is represented by dotted lines.Situation about being omitted in electric capacity 1734, When switching switch 1735 is turned on, the electric current of inductance 1732 is not passed through LED module and LED module is not lighted；Switching switch 1735 During cut-off, the electric current of inductance 1732 flows through LED module through fly-wheel diode 1733 and LED module is lighted.By control LED The fluorescent lifetime of module and the size of current flowed through, can reach that the mean flow rate of LED module is stable in predetermined value, and reach The effect of identical stabilized illumination.

Figure 10 E are referred to, are the circuit diagram of the drive circuit according to the embodiment of the utility model one.In this implementation Example, drive circuit 1830 is decompression DC to-DC switching circuit, comprising controller 1831 and change-over circuit, and change-over circuit bag Containing inductance 1832, fly-wheel diode 1833, electric capacity 1834 and switching switch 1835.Drive circuit 1830 couples filtering output end 521 and 522, the filtered signal of reception is converted into drive signal, drive output 1521 and 1522 is coupled in drive Between LED module.

The first end coupling filtering output end 521 of switching switch 1835, the second end couples the negative pole of fly-wheel diode 1833, And control end coupling controller 1831 makes the state between first end and the second end to receive the control signal of controller 1831 For on or off.The positive pole coupling filtering output end 522 of fly-wheel diode 1833.One end of inductance 1832 is switched with switching 1835 the second end coupling, other end coupling drive output 1521.The coupling fly-wheel diode 1833 of drive output 1522 Positive pole.Electric capacity 1834 is coupled between drive output 1521 and 1522, between stabilized driving output end 1521 and 1522 Voltage.

Controller 1831 controls switching switch 1835 according to current sense signal S531 and/or current sense signal S535 Conducting and cut-off.When switching switch 1835 turn on when, electric current is flowed into by filtering output end 521, and flow through switching switch 1835, Flowed out after inductance 1832, drive output 1521 and 1522 by filtering output end 522.Now, flow through the electric current of inductance 1832 with And the voltage of electric capacity 1834 increases with the time, inductance 1832 and electric capacity 1834 are in energy storage state.When switching switch 1835 ends When, inductance 1832 is in de-energized state, and the electric current of inductance 1832 is reduced with the time.Now, the electric current of inductance 1832 is defeated through driving Go out end 1521 and 1522, fly-wheel diode 1833 returns inductance 1832 and forms afterflow.

It is worth noting that, electric capacity 1834 is represented by dotted lines for that can omit in component, schema.When electric capacity 1834 is omitted, No matter switching switch 1835 is on or off, the electric current of inductance 1832 can flow through drive output 1521 and 1522 to drive Dynamic LED module continuous illumination.

Figure 10 F are referred to, are the circuit diagram of the drive circuit according to the embodiment of the utility model one.In this implementation Example, drive circuit 1930 is decompression DC to-DC switching circuit, comprising controller 1931 and change-over circuit, and change-over circuit bag Containing inductance 1932, fly-wheel diode 1933, electric capacity 1934 and switching switch 1935.Drive circuit 1930 couples filtering output end 521 and 522, the filtered signal of reception is converted into drive signal, drive output 1521 and 1522 is coupled in drive Between LED module.

One end coupling filtering output end 521 and drive output 1522 of inductance 1932, other end coupling switching switch 1935 first end.The second end coupling filtering output end 522 of switching switch 1935, and control end couples controller 1931 with root It is on or off according to the control signal of controller 1931.The positive pole coupling inductance 1932 of fly-wheel diode 1933 is opened with switching The tie point of pass 1935, negative pole coupling drive output 1521.Electric capacity 1934 couples drive output 1521 and 1522, with stable The driving for the LED module being coupled between drive output 1521 and 1522.

Controller 1931 controls switching switch 1935 according to current sense signal S531 and/or current sense signal S535 Conducting and cut-off.When switching switch 1935 is turned on, electric current is flowed into by filtering output end 521, and flows through inductance 1932, switching Flowed out after switch 1935 by filtering output end 522.Now, flow through the electric current of inductance 1932 increases with the time, and inductance 1932 is in Energy storage state；The voltage of electric capacity 1934 is reduced with the time, and electric capacity 1934 is in de-energized state, to maintain LED module to light.When cutting When changing the cut-off of switch 1935, inductance 1932 is in de-energized state, and the electric current of inductance 1932 is reduced with the time.Now, inductance 1932 Electric current return inductance 1932 through fly-wheel diode 1933, drive output 1521 and 1522 and form afterflow.Now, electric capacity 1934 are in energy storage state, and the voltage of electric capacity 1934 increases with the time.

It is worth noting that, electric capacity 1934 is represented by dotted lines for that can omit in component, schema.When electric capacity 1934 is omitted, When switching switch 1935 is turned on, the electric current of inductance 1932 is not flow through drive output 1521 and 1522 and LED module is not sent out Light.When switching switch 1935 ends, the electric current of inductance 1932 flows through LED module and makes LED module through fly-wheel diode 1933 It is luminous.By the size of current for controlling the fluorescent lifetime of LED module and flowing through, it can reach that the mean flow rate of LED module is stable In in predetermined value, and reach the effect of identical stabilized illumination.

Figure 10 G are referred to, are the circuit box schematic diagram of the drive circuit according to the embodiment of the utility model one.Driving electricity Road includes controller 2631 and change-over circuit 2632, electrical power conversion is carried out with the pattern of adjustable current source, to drive LED module to send out Light.Change-over circuit 2632 includes on-off circuit 2635 and accumulator 2638.Change-over circuit 2632 couples filtering output end 521 And 522, signal after accepting filter, and according to the control of controller 2631, it is converted into drive signal and by drive output 1521 And 1522 output, to drive LED module.Controller 2631 receives current sense signal S535 and/or S539, controls change-over circuit The drive signal of 2632 outputs is stable in predetermined current value.Wherein, current sense signal S535 representation switch circuit 2635 Size of current；Current sense signal S539 represents the size of current of accumulator 2638, for example：Inductance in accumulator 2638 Electric current, electric current that drive output 1521 is exported etc..Any of current sense signal S535 and S539 can represent driving Circuit is supplied to the electric current Iout of LED module size by drive output 1521 and 1522.Controller 2631 more couples filtering Output end 521, to determine the size of predetermined current value according to the voltage Vin of filtering output end 521.Therefore, the electricity of drive circuit Iout, i.e. predetermined current value are flowed, the voltage Vin for the filtered signal that can be exported according to filter circuit size adjustment.

It is worth noting that, above-mentioned current sense signal S535 and S539 generation can be the sides using resistance or inductance Formula weight is surveyed.For example, the pressure difference for resistance being flowed through according to electric current and being produced in resistance two ends, or utilize mutual inductance inductance and energy storage Inductance mutual inductance in circuit 2638 etc. can be used to detecting current.

Above-mentioned circuit framework, the lamp tube drive circuit that is particularly suitable for use in is the applied environment of electric ballast.Electronic ballast Equivalent device is above current source, and its power output is not definite value.And the drive circuit as shown in Figure 10 C to Figure 10 F, it is consumed Power is relevant with the LED component quantity of LED module, can be considered definite value.When the power output of electric ballast is higher than drive circuit During the consumption power of the LED module driven, the output voltage of electric ballast can be improved constantly, that is, LED power supply The level for the alternating current drive signal that component is received can constantly rise and cause to have more than electric ballast and/or the electricity of LED The risk that the component of source component is pressure-resistant and damages.When the power output of electric ballast is less than the LED moulds that drive circuit is driven During the consumption power of block, the output voltage of electric ballast can be reduced constantly, that is, the level of alternating current drive signal can be continuous Decline and cause the circuit can not normal operating.

It is worth noting that, the power needed for LED illumination is already less than the power needed for the fluorescent lightings such as fluorescent lamp. If controlling the controlling mechanism of LED luminance using conventional backlight module etc., the drive system traditional applied to electric ballast etc. must The incompatibility problem that the power of drive system and the required power difference of LED are caused can so be suffered from.Even result in drivetrain The problem of system and/or LED are damaged.Example is adjusted with above-mentioned power so that LED is more compatible with traditional fluorescent lighting System.

Figure 10 H are referred to, are area's line relation of the voltage Vin and electric current Iout according to the preferred embodiment of the utility model one Schematic diagram.Wherein, transverse axis is voltage Vin, and the longitudinal axis is electric current Iout.In one embodiment, as the voltage Vin of filtered signal When (i.e. level) is between upper voltage limit value VH and voltage lower limit value VL, electric current Iout maintains initial predetermined current value.When When the voltage Vin of filtered signal is higher than upper voltage limit value VH, electric current Iout (i.e. predetermined current value) is with voltage Vin increase Improve.Upper voltage limit value VH is higher than voltage lower limit value VL.Preferably slope of a curve rises with voltage Vin and becomes big.Work as filtering When the voltage Vin of signal is less than voltage lower limit value VL afterwards, predetermined current value is reduced with voltage Vin reduction.Preferably curve Slope with voltage Vin reduce and diminish.It is, when voltage Vin is higher than upper voltage limit value VH or less than voltage lower limit value VL When, electric predetermined current value is preferably the functional relation of voltage Vin quadratic power or more, and causes the increment rate of consumption power (slip) is higher than the increment rate (slip) of power output.That is, the Tuning function system of described predetermined current value is comprising described The function of the quadratic power of level of filtered signal or more.

In another embodiment, when the voltage Vin of filtered signal is between upper voltage limit value VH and voltage lower limit value VL When, the electric current Iout of LED can be increased or decreased and linearly increasing or reduction with voltage Vin.When voltage Vin is in upper voltage limit value During VH, electric current Iout is in upper current value IH；As voltage Vin limit value VL under voltage, electric current Iout is in lower current value IL.Its In, upper current value IH is higher than lower current value IL.It is, work as voltage Vin between upper voltage limit value VH and voltage lower limit value VL, Electric current Iout is the functional relation of voltage Vin first power.

By above-mentioned design, when power output the disappearing higher than the LED module that drive circuit is driven of electric ballast During wasted work rate, voltage Vin can be improved with the time and be exceeded upper voltage limit value VH.When voltage Vin is higher than upper voltage limit value VH, Increment rate of the increment rate higher than the power output of electric ballast of the consumption power of LED module, and balanced in voltage Vin to be high When voltage VH+ and electric current Iout is high balanced balanced current IH+, power output is equal to consumption power and balanced.Now, high balance electricity VH+ is pressed to be higher than upper voltage limit value VH, and high balanced balanced current IH+ is higher than upper current value.Conversely, when voltage Vin is less than lower voltage limit During value VL, slip of the slip higher than the power output of electric ballast of the consumption power of LED module, and in voltage Vin When for low balanced voltage VL- and electric current Iout being low balanced balanced current IL-, power output is equal to consumption power and balanced.Now, Low balanced voltage VL- is less than voltage lower limit value VL, and low balanced balanced current IL- is less than lower current value IL.

In a preferred embodiment, voltage lower limit value VL is defined as the 90% of the minimum output voltage of electric ballast, electricity Pressure higher limit VH is defined as the 110% of maximum output voltage.By taking full voltage 100-277V AC/60HZ as an example, voltage lower limit value VL 90V (100V*90%) is set to, upper voltage limit value VH is set to 305V (277V*110%).

Coordinate Fig. 3 and Fig. 4, short circuit board 253 be distinguished into the first short circuit board for being connected with the long two ends of circuit board 251 and Second short circuit board, and the first short circuit board of short circuit board 253 that electronic building brick in power supply module is respectively set at And second on short circuit board.The length dimension of first short circuit board and the second short circuit board be able to can also be differed with rough consistent Cause.Typically, the first short circuit board (the left side circuit board of the right-hand circuit board of short circuit board 253 and Fig. 4 short circuit board 253) Length dimension is the 30%~80% of the length dimension of the second short circuit board.The length dimension of more preferably first short circuit board is the The 1/3~2/3 of the length dimension of two short circuit boards.In this embodiment, the length dimension substantially second of the first short circuit board is short The half of the size of circuit board.The size of second short circuit board is between 15mm~65mm (specifically depending on application scenario).First Short circuit board is arranged in the lamp holder of one end of LED straight lamps, and the second short circuit board is arranged at the phase of LED straight lamps To the other end lamp holder in.

For example, the electric capacity of drive circuit is for example：Electric capacity 1634 in Figure 10 C to Figure 10 F, 1734,1834,1934) Can be that two or more electric capacity is formed in parallel in practical application.The electric capacity of drive circuit is at least partly or complete in power supply module Portion is arranged on the first short circuit board of short circuit board 253.That is, rectification circuit, filter circuit, the inductance of drive circuit, control Device, switching switch, diode etc. may be contained within the second short circuit board of short circuit board 253.And inductance, controller, switching are opened Pass etc. is the higher component of temperature in electronic building brick, is arranged at from part or all of electric capacity on different circuit boards, can make electric capacity (especially electrochemical capacitor) is avoided because the higher component of temperature is impacted to the life-span of electric capacity, improves electric capacity reliability.Enter one Step, can also be spatially separated from rectification circuit and filter circuit because of electric capacity, solve the problems, such as EMI.

The conversion efficiency of drive circuit of the present utility model be more than 80%, preferably more than 90%, more preferably 92% with On.Therefore, when not including drive circuit, the luminous efficiency of LED of the present utility model is preferably more than 120lm/W, more preferably For more than 160lm/W；And the luminous efficiency after being combined comprising drive circuit with LED component is preferably 120lm/W*90%= More than 108lm/W, more preferably more than 160lm/W*92%=147.2lm/W.

Additionally, it is contemplated that the light transmittance of the diffusion layer of LED straight lamps is more than 85%, and therefore, LED straight tubes of the present utility model The luminous efficiency of lamp is preferably more than 108lm/W*85%=91.8lm/W, more preferably 147.2lm/W*85%=125.12lm/ W。

Figure 11 A are referred to, are that the application circuit square of the power supply module of LED according to the embodiment of the utility model one shows It is intended to.Compared to Fig. 5 E illustrated embodiments, the present embodiment includes rectification circuit 510 and 540, filter circuit 520, LED driving moulds Block 530, and more increase anti-flicker circuit 550.Anti-flicker circuit 550 be coupled to filter circuit 520 and LED drive module 530 it Between.Wherein, rectification circuit 540 is omissible circuit, is represented by dotted lines in the drawings.

Anti-flicker circuit 550 couples filtering output end 521 and 522, with signal after accepting filter, and in less than specific feelings During condition, the portion of energy of filtered signal is consumed, the luminous of LED drive module 530 is caused to suppress the ripple of filtered signal The situation of interruption occurs.Posted in general, filter circuit 520 to have inductively or capacitively wait to have on filtering unit, or circuit Raw electric capacity and inductance, and form resonance circuit.Resonance circuit is when ac supply signal stops providing, example：User closes After the power supply of LED, the amplitude of its resonance signal can successively decrease with the time.However, the LED module of LED is one-way conduction group Part and with minimum conducting voltage.When the valley value of resonance signal is less than the minimum conducting voltage of LED module, and crest value is remained above During the minimum conducting voltage of LED module, scintillation occurs in the luminous of LED module.Anti-flicker circuit can be flowed through at this moment to be more than The electric current of one predetermined anti-flicker electric current, consumes the portion of energy of filtered signal, this portion of energy is higher than resonance signal in crest Energy difference between value and valley value, and suppress the luminous scintillation of LED module.Preferably signal is approached after the filtering During the minimum conducting voltage of LED module, the portion of energy that anti-flicker circuit consumes filtered signal is higher than resonance signal in ripple Energy difference between peak value and valley value.

It is worth noting that, anti-flicker circuit 550, which is more suitable for LED drive module 530, does not include drive circuit 1530 Performance.That is, working as LED drive module 530 includes LED module 630, and LED module 630 is by the filtering of filter circuit Applicable cases when signal direct drive is luminous afterwards.The luminous of LED module 630 becomes the direct ripple for reflecting filtered signal Change.The setting of anti-flicker circuit 550, will suppress the scintillation that LED occurs after the power supply of LED is closed.

Figure 11 B are referred to, are the circuit diagram of the anti-flicker circuit according to the preferred embodiment of the utility model one.It is anti-to dodge Bright circuit 650 includes an at least resistance, for example：Two resistance of series connection, are series between filtering output end 521 and 522.At this In embodiment, anti-flicker circuit 650 persistently consumes the portion of energy of filtered signal.In normal operating, this portion of energy is remote The energy consumed less than LED drive module 530.So, after power-off, the level of filtered signal drops to LED module When near 630 minimum conducting voltage, anti-flicker circuit 650 still consumes the portion of energy of filtered signal and makes LED module 630 Reduce the luminous situation of interruption.In a preferred embodiment, anti-flicker circuit 650 may be set to lead in the minimum of LED module 630 During the pressure that is powered, flow through more than or equal to an anti-flicker electric current, and the equivalent anti-flicker resistance of anti-flicker circuit 650 can be determined accordingly Value.

It is the application circuit square signal of the power supply module of LED according to the embodiment of the utility model one referring to Figure 12 A Figure.Compared to Figure 11 A illustrated embodiments, the present embodiment includes rectification circuit 510 and 540, filter circuit 520, LED drive module 530 and anti-flicker circuit 550, and more increase protection circuit 560.The filtering output end 521 and 522 of protection circuit 560, detecting filtering Signal is to decide whether to enter guard mode afterwards.When determining to enter guard mode, the strangulation filtered signal of protection circuit 560 Level size, to avoid the component in LED drive module 530 from being damaged.Wherein, rectification circuit 540 and anti-flicker circuit 550 For omissible circuit, it is represented by dotted lines in the drawings.

It is the circuit diagram of the protection circuit according to the preferred embodiment of the utility model one referring to Figure 12 B.Protection circuit 660 include electric capacity 663 and 670, resistance 669, diode 672, voltage clamping circuit and bleeder circuit, and wherein voltage clamping circuit is comprising double To controllable silicon 661 and bidirectional trigger diode 662, bleeder circuit comprising bipolar junction transistors 667 and 668, resistance 664, 665th, 666 and 671.Protection circuit 660 enters guard mode when the electric current and/or overtension of LED module, and avoids LED The damage of module.

The first end coupling filtering output end 521 of bidirectional triode thyristor 661, the second end coupling filtering output end 522, and control The first end of end coupling bidirectional trigger diode 662.One end of second end coupling capacitance 663 of bidirectional trigger diode 662, electricity The other end for holding 663 couples filtering output end 522.One end of resistance 664 couples the second end of bidirectional trigger diode 662, separately One end couples filtering output end 522, and in parallel with electric capacity 663.The of one end coupling bidirectional trigger diode 662 of resistance 665 Two ends, the other end couples the collector of bipolar junction transistors 667.The emitter-base bandgap grading coupling filtering of bipolar junction transistors 667 is defeated Go out end 522.One end of resistance 666 couples the second end of bidirectional trigger diode 662, other end coupling bipolar junction transistors 668 collector and the base stage of bipolar junction transistors 667.The emitter-base bandgap grading coupling filtering output of bipolar junction transistors 668 End 522.One end of resistance 669 couples the base stage of bipolar junction transistors 668, one end of other end coupling capacitance 670.Electric capacity 670 other end coupling output end 522.One end of resistance 671 couples the second end of bidirectional trigger diode 662, other end coupling Connect the negative pole of diode 672.The positive pole coupling filtering output end 521 of diode 672.

It is worth noting that, the resistance of resistance 665 is less than the resistance of resistance 666.

First illustrate the operation of the overcurrent protection of protection circuit 660 below.

The tie point of resistance 669 and electric capacity 670 receives current sense signal S531, and wherein current sense signal S531 is represented The size of current that LED module is flowed through.The other end coupling voltage end 521 ' of resistance 671.In this embodiment, voltage end 521 ' can To couple a bias generator or such as schema, filtering output end 521 is couple to using filtered signal as inclined through diode 672 Potential source.When voltage end 521 ' couples extra bias generator, diode 672 can save filter, in the drawings, and diode 672 is with void Line is represented.The combination of resistance 669 and electric capacity 670 can filter current sense signal S531 radio-frequency component, and will filter rear electricity The base stage of stream detection signal S531 input bipolar junction transistors 668 with control the conductings of bipolar junction transistors 668 with Cut-off.By the filter action of resistance 669 and electric capacity 670, the bipolar junction transistors 668 caused by noise can be avoided Misoperation.In practical application, resistance 669 and electric capacity 670 can omit (therefore resistance 669 and electric capacity 670 in figure with dotted line Represent), and current sense signal S531 is directly inputted to the base stage of bipolar junction transistors 668.

When LED normal operating and the electric current of LED module are in normal range (NR), bipolar junction transistors 668 is cut Only.Now, resistance 666 is drawn high the base voltage of bipolar junction transistors 667 and so that bipolar junction transistors 667 are led It is logical.Now, the current potential at the second end of bidirectional trigger diode 662 is according to the voltage of the bias generator of power end 521 ', and resistance 671 and resistance 664 in parallel with 665 dividing ratios and determine.Because the resistance of resistance 665 is smaller, dividing ratios it is relatively low because And the current potential at the second end of bidirectional trigger diode 662 is relatively low.Now, the control terminal potential of bidirectional triode thyristor 661 is also two-way Diac 662 is dragged down, and bidirectional triode thyristor 661 makes protection circuit 660 be in unprotected state for cut-off.

When the electric current of LED module is more than an overcurrent value, now current sense signal S531 level can be too high and make double Carrier junction transistor 668 is turned on.Bipolar junction transistors 668 can drag down the base stage of bipolar junction transistors 667 and make It is cut-off to obtain bipolar junction transistors 667.Now, the current potential at the second end of bidirectional trigger diode 662 is according to power end The voltage of 521 ' bias generator, and resistance 671 and resistance 664 in parallel with 666 dividing ratios and determine.Due to resistance 666 resistance is larger, and dividing ratios are higher thus current potential of the second end of bidirectional trigger diode 662 is higher.Now, it is two-way can The control terminal potential of control silicon 661 is also drawn high by bidirectional trigger diode 662, and bidirectional triode thyristor 661 is filtered defeated for conducting with strangulation Go out to hold the voltage difference between 521 and 522 and protection circuit 660 is in guard mode.

In the present embodiment, the voltage system of bias generator is according to the trigger voltage of bidirectional triode thyristor 661, resistance 671 and parallel connection Resistance 664 determined with 665 dividing ratios and resistance 671 and resistance 664 in parallel with 666 dividing ratios.Thereby, The voltage of bias generator is less than the trigger voltage of bidirectional triode thyristor 661 after the former dividing ratios partial pressure, and in the partial pressure of the latter It is higher than the trigger voltage of bidirectional triode thyristor 661 after proportion divider.It is, when the electric current of the LED module is more than overcurrent value, Bleeder circuit heightens the dividing ratios, and reaches sluggish ratio than effect.In terms of specific implementation, as double loads of switching switch Sub- junction transistor 667 and 668 is connected respectively determines the resistance 665 and 666 of dividing ratios, and bleeder circuit is according to LED module Whether electric current is more than overcurrent value, to determine the cut-off whichever conducting of the whichever of bipolar junction transistors 667 and 668, to determine partial pressure Ratio.Voltage clamping circuit decides whether the voltage of strangulation LED module according to the partial pressure of bleeder circuit.

Then the operation of the overvoltage protection of protection circuit 660 is illustrated.

The tie point of resistance 669 and electric capacity 670 receives current sense signal S531, and wherein current sense signal S531 is represented The size of current that LED module is flowed through.Therefore, now protection circuit 660 still has the function of current protection.Resistance 671 it is another End coupling voltage end 521 ', in this embodiment, voltage end 521 ' couples the anode of LED module to detect the voltage of LED module. By taking the above embodiments as an example, the reality of drive circuit 1530 is not included in LED drive modules 530 such as Fig. 9 A and Fig. 9 B embodiments Apply in example, the coupling filtering output end 521 of voltage end 521 '；Drive circuit is included in LED drive modules 530 such as Figure 10 A to Figure 10 G In 1530 embodiment, the coupling drive output 1521 of voltage end 521 '.In the present embodiment, resistance 671 and resistance in parallel 664 will regard the electricity of voltage end 521 ' with 665 dividing ratios and resistance 671 and the dividing ratios of resistance 664 and 666 in parallel Pressure, the i.e. voltage of drive output 1521 or filtering output end 521 are adjusted.Therefore, the overcurrent protection of protection circuit 660 still may be used Normal operating.

When LED module normal operating, the current potential at the second end of bidirectional trigger diode 662 (by resistance 671 with it is in parallel The dividing ratios of resistance 665 and 664 are determined with the voltage of voltage end 521 ') it is not enough to trigger bidirectional triode thyristor 661.Now, touch It is cut-off to send out bidirectional triode thyristor 661, and protection circuit 660 is in unprotected state.When LED module operation exception causes LED moulds The voltage of the anode of block is more than an overpressure value.Now, the current potential at the second end of bidirectional trigger diode 662 it is higher and make it is two-way touch The first end for sending out diode 662 exceedes the trigger voltage of triggering bidirectional triode thyristor 661.Now, triggering bidirectional triode thyristor 661 is to lead Logical, protection circuit 660 is in guard mode and the level of strangulation filtered signal.

As described above, protection control circuit 660 can have excessively stream or over-voltage protecting function, or can have simultaneously The function of stream and overvoltage protection.

In addition, protection circuit 660 can resistance 664 two ends parallel diode, with the voltage at strangulation two ends.Zener The breakdown voltage of diode is preferably 25-50V, more preferably 36V.

Furthermore, bidirectional triode thyristor 661 can be come with thyristor (Silicon Controlled Rectifier, SCR) Instead of the defencive function without influenceing protection circuit.Especially, pressure drop during conducting can be reduced by using thyristor pipe.

In one embodiment, the component parameter of protection circuit 660 can be set as follows.The resistance of resistance 669 is preferably 10 Europe Nurse.The capacitance of electric capacity 670 is preferably 1nf.The capacitance of electric capacity 633 is preferably 10nf.The voltage range of bidirectional trigger diode 662 26-36V.The resistance of resistance 671 is preferably 300K-600K ohm, more preferably 540K ohm.The resistance of resistance 666 is preferably 100K-300K ohm, more preferably 220K ohm.The resistance of resistance 665 is preferably 30K-100K ohm, more preferably 40K ohm.Electricity The resistance of resistance 664 is preferably 100K-300K ohm, more preferably 220K ohm.

It is the application circuit square signal of the power supply module of LED according to the embodiment of the utility model one referring to Figure 13 A Figure.Compared to Figure 10 A illustrated embodiments, the present embodiment includes rectification circuit 510 and 540, filter circuit 520, includes driving electricity The LED drive module 530 of road 1530 and LED module 630, and more increase mode switching circuit 580.The coupling of mode switching circuit 580 Connect filtering output end 521 and 522 at least one and drive output 1521 and 1522 at least one, to determine Carry out the first drive pattern or the second drive pattern.Wherein, the first drive pattern system is by filtered signal input driving circuit 1530, the second drive pattern system at least bypasses the part component of drive circuit 1530, and filtered signal is directly inputted and driven Dynamic LED module 630.The part component of bypassed drive circuit 1530 includes inductance or switching switch.Certainly, drive circuit If 1530 electric capacity in the presence of and do not omit, still can reach stable LED module two to filter the ripple of filtered signal The effect of the voltage at end.When mode switching circuit 580 determines the first drive pattern and by filtered signal input driving circuit When 1530, filtered signal is converted into drive signal to drive LED module 630 to light by drive circuit 1530.Work as pattern switching When circuit 580 determines the second drive pattern and filtered signal is directly transported into LED module 630 and drive circuit 1530 is bypassed, Equivalent upper filter circuit 520 is the drive circuit of LED module 630, and it is LED module that filter circuit 520, which provides filtered signal, Drive signal, to drive LED module to light.

It is worth noting that, mode switching circuit 580 can be received according to the order of user or detecting LED via Pin 501,502,503 and 504 received signals judge, and determine the first drive pattern or the second drive pattern.By Mode switching circuit, the power supply module of LED can correspond to different applied environment or drive system, and adjust appropriate driving Pattern, thus improve the compatibility of LED.In addition, rectification circuit 540 is represented by dotted lines for that can omit circuit.

It is the circuit diagram of the mode switching circuit according to the embodiment of the utility model one referring to Figure 13 B.Pattern switching Circuit 680 includes mode selector switch 681, it is adaptable to the drive circuit 1630 shown in Figure 10 C.Please referring also to Figure 13 B and figure 10C, mode selector switch 681 has three end points 683,684,685, the coupling drive output 1522 of end points 683, end points 684 Couple filtering output end 522 and end points 685 couples the inductance 1632 of drive circuit 1630.

When mode switching circuit 680 determines first mode, the first of the conducting end points 683 and 685 of mode selector switch 681 Current path and the second current path for ending end points 683 and 684.Now, drive output 1522 is coupled with inductance 1632.Cause This, the normal operation of drive circuit 1630 signal and will be converted into drive signal after being accepted filter by filtering output end 521 and 522 LED module is driven by drive output 1521 and 1522.

When mode switching circuit 680 determines second mode, the second of the conducting end points 683 and 684 of mode selector switch 681 Current path and the first current path for ending end points 683 and 685.Now, filtering output end 522 and the coupling of drive output 1522 Connect.Filtered signal is inputted by filtering output end 521 and 522 and directly drives LED module by drive output 1521 and 1522, and Bypass the inductance 1632 and switching switch 1635 of drive circuit 1630.

It is the circuit diagram of the mode switching circuit according to the embodiment of the utility model one referring to Figure 13 C.Pattern switching Circuit 780 includes mode selector switch 781, it is adaptable to the drive circuit 1630 shown in Figure 10 C.Please referring also to Figure 13 C and figure 10C, mode selector switch 781 has three ends 783,784,785, and the coupling filtering output end 522 of end points 783, end points 784 is coupled The switching switch 1635 of drive output 1522 and the coupling drive circuit 1630 of end points 785.

When mode switching circuit 780 determines first mode, the first of the conducting end points 783 and 785 of mode selector switch 781 Current path and the second current path for ending end points 783 and 784.Now, filtering output end 522 and switching 1635 couplings of switch Connect.Therefore, the normal operation of drive circuit 1630, after being accepted filter by filtering output end 521 and 522 signal and be converted into driving Signal drives LED module by drive output 1521 and 1522.

When mode switching circuit 780 determines second mode, the second of the conducting end points 783 and 784 of mode selector switch 781 Current path and the first current path for ending end points 783 and 785.Now, filtering output end 522 and the coupling of drive output 1522 Connect.Filtered signal is inputted by filtering output end 521 and 522 and directly drives LED module by drive output 1521 and 1522, and Bypass the inductance 1632 and switching switch 1635 of drive circuit 1630.

It is the circuit diagram of the mode switching circuit according to the embodiment of the utility model one referring to Figure 13 D.Pattern switching Circuit 880 includes mode selector switch 881, it is adaptable to the drive circuit 1730 shown in Figure 10 D.Please referring also to Figure 13 D and figure 10D, mode selector switch 881 has three end points 883,884,885, the coupling filtering output end 521 of end points 883, the coupling of end points 884 Connect drive output 1521 and end points 885 couples the inductance 1732 of drive circuit 1730.

When mode switching circuit 880 determines first mode, the first of the conducting end points 883 and 885 of mode selector switch 881 Current path and the second current path for ending end points 883 and 884.Now, filtering output end 521 is coupled with inductance 1732.Cause This, the normal operation of drive circuit 1730 signal and will be converted into drive signal after being accepted filter by filtering output end 521 and 522 LED module is driven by drive output 1521 and 1522.

When mode switching circuit 880 determines second mode, the second of the conducting end points 883 and 884 of mode selector switch 881 Current path and the first current path for ending end points 883 and 885.Now, filtering output end 521 and the coupling of drive output 1521 Connect.Filtered signal is inputted by filtering output end 521 and 522 and directly drives LED module by drive output 1521 and 1522, and Bypass the inductance 1732 and fly-wheel diode 1733 of drive circuit 1730.

It is the circuit diagram of the mode switching circuit according to the embodiment of the utility model one referring to Figure 13 E.Pattern switching Circuit 980 includes mode selector switch 981, it is adaptable to the drive circuit 1730 shown in Figure 10 D.Please referring also to Figure 13 E and figure 10D, mode selector switch 981 has three end points 983,984,985, the coupling drive output 1521 of end points 983, end points 984 Couple the negative pole of the fly-wheel diode 1733 of filtering output end 521 and the coupling drive circuit 1730 of end points 985.

When mode switching circuit 980 determines first mode, the first of the conducting end points 983 and 985 of mode selector switch 981 Current path and the second current path for ending end points 983 and 984.Now, the negative pole of fly-wheel diode 1733 is exported with filtering End 521 is coupled.Therefore, the normal operation of drive circuit 1730, after being accepted filter by filtering output end 521 and 522 signal and turn Change drive signal into and LED module is driven by drive output 1521 and 1522.

When mode switching circuit 980 determines second mode, the second of the conducting end points 983 and 984 of mode selector switch 981 Current path and the first current path for ending end points 983 and 985.Now, filtering output end 521 and the coupling of drive output 1521 Connect.Filtered signal is inputted by filtering output end 521 and 522 and directly drives LED module by drive output 1521 and 1522, and Bypass the inductance 1732 and fly-wheel diode 1733 of drive circuit 1730.

It is the circuit diagram of the mode switching circuit according to the embodiment of the utility model one referring to Figure 13 F.Pattern switching Circuit 1680 includes mode selector switch 1681, it is adaptable to the drive circuit 1830 shown in Figure 10 E.Please referring also to Figure 13 F and Figure 10 E, mode selector switch 1681 has three end points 1683,1684,1685, the coupling filtering output end 521 of end points 1683, end Point 1684 couples the switching switch 1835 of drive output 1521 and the coupling drive circuit 1830 of end points 1685.

When mode switching circuit 1680 determines first mode, the conducting end points 1683 and 1685 of mode selector switch 1681 First current path and the second current path for ending end points 1683 and 1684.Now, filtering output end 521 is switched with switching 1835 couplings.Therefore, the normal operation of drive circuit 1830, signal and will be changed after being accepted filter by filtering output end 521 and 522 LED module is driven by drive output 1521 and 1522 into drive signal.

When mode switching circuit 1680 determines second mode, the conducting end points 1683 and 1684 of mode selector switch 1681 Second current path and the first current path for ending end points 1683 and 1685.Now, filtering output end 521 and drive output 1521 couplings.Filtered signal is inputted by filtering output end 521 and 522 and directly drives LED by drive output 1521 and 1522 Module, and bypass the inductance 1832 and switching switch 1835 of drive circuit 1830.

It is the circuit diagram of the mode switching circuit according to the embodiment of the utility model one referring to Figure 13 G.Pattern switching Circuit 1780 includes mode selector switch 1781, it is adaptable to the drive circuit 1830 shown in Figure 10 E.Please referring also to Figure 13 G and Figure 10 E, mode selector switch 1781 has three end points 1783,1784,1785, the coupling filtering output end 521 of end points 1783, end Point 1784 couples drive output 1521 and end points 1785 couples the inductance 1832 of drive circuit 1830.

When mode switching circuit 1780 determines first mode, the conducting end points 1783 and 1785 of mode selector switch 1781 First current path and the second current path for ending end points 1783 and 1784.Now, filtering output end 521 and the coupling of inductance 1832 Connect.Therefore, the normal operation of drive circuit 1830, after being accepted filter by filtering output end 521 and 522 signal and be converted into driving Signal drives LED module by drive output 1521 and 1522.

When mode switching circuit 1780 determines second mode, the conducting end points 1783 and 1784 of mode selector switch 1781 Second current path and the first current path for ending end points 1783 and 1785.Now, filtering output end 521 and drive output 1521 couplings.Filtered signal is inputted by filtering output end 521 and 522 and directly drives LED by drive output 1521 and 1522 Module, and bypass the inductance 1832 and switching switch 1835 of drive circuit 1830.

It is the circuit diagram of the mode switching circuit according to the embodiment of the utility model one referring to Figure 13 H.Pattern switching Circuit 1880 includes mode selector switch 1881 and 1882, it is adaptable to the drive circuit 1930 shown in Figure 10 F.Please referring also to scheme 13H and Figure 10 F, mode selector switch 1881 has three end points 1883,1884,1885, the coupling drive output of end points 1883 1521, end points 1884 couples filtering output end 521 and end points 1885 couples the fly-wheel diode 1933 of drive circuit 1930.Mould Formula switching switch 1882 has three end points 1886,1887,1888, the coupling drive output 1522 of end points 1886, end points 1887 Couple filtering output end 522 and the coupling filtering output end 521 of end points 1888.

When mode switching circuit 1880 determines first mode, the conducting end points 1883 and 1885 of mode selector switch 1881 First current path and the second current path for ending end points 1883 and 1884, and the conducting end points of mode selector switch 1882 1886 and 1888 the 3rd current path and the 4th current path for ending end points 1886 and 1887.Now, drive output 1521 are coupled with fly-wheel diode 1933, and filtering output end 521 is coupled with drive output 1522.Therefore, drive circuit 1930 normal operations, signal and drive signal will be converted into by drive output after being accepted filter by filtering output end 521 and 522 1521 and 1522 driving LED modules.

When mode switching circuit 1880 determines second mode, the conducting end points 1883 and 1884 of mode selector switch 1881 Second current path and the first current path for ending end points 1883 and 1885, and the conducting end points of mode selector switch 1882 1886 and 1887 the 4th current path and the 3rd current path for ending end points 1886 and 1888.Now, filtering output end 521 Coupled with drive output 1521, and filtering output end 522 is coupled with drive output 1522.Filtered signal is defeated by filtering Go out the input of end 521 and 522 and LED module is directly driven by drive output 1521 and 1522, and bypass the continuous of drive circuit 1930 Flow diode 1933 and switching switch 1935.

It is the circuit diagram of the mode switching circuit according to the embodiment of the utility model one referring to Figure 13 I.Pattern switching Circuit 1980 includes mode selector switch 1981 and 1982, it is adaptable to the drive circuit 1930 shown in Figure 10 F.Please referring also to scheme 13I and Figure 10 F, mode selector switch 1981 has three end points 1983,1984,1985, the coupling filtering output end of end points 1983 522, the switching of the coupling drive output 1522 of end points 1984 and the coupling drive circuit 1930 of end points 1985 switchs 1935.Pattern Switching switch 1982 has three end points 1986,1987,1988, and the coupling filtering output end 521 of end points 1986, end points 1987 is coupled Drive output 1521 and the coupling drive output 1522 of end points 1988.

When mode switching circuit 1980 determines first mode, the conducting end points 1983 and 1985 of mode selector switch 1981 First current path and the second current path for ending end points 1983 and 1984, and the conducting end points of mode selector switch 1982 1986 and 1988 the 3rd current path and the 4th current path for ending end points 1986 and 1987.Now, filtering output end 522 Coupled with switching switch 1935, and filtering output end 521 is coupled with drive output 1522.Therefore, drive circuit 1930 is normal Running, after being accepted filter by filtering output end 521 and 522 signal and be converted into drive signal by drive output 1521 and 1522 driving LED modules.

When mode switching circuit 1980 determines second mode, the conducting end points 1983 and 1984 of mode selector switch 1981 Second current path and the first current path for ending end points 1983 and 1985, and the conducting end points of mode selector switch 1982 1986 and 1987 the 4th current path and the 3rd current path for ending end points 1986 and 1988.Now, filtering output end 521 Coupled with drive output 1521, and filtering output end 522 is coupled with drive output 1522.Filtered signal is defeated by filtering Go out the input of end 521 and 522 and LED module is directly driven by drive output 1521 and 1522, and bypass the continuous of drive circuit 1930 Flow diode 1933 and switching switch 1935.

It is worth noting that, the mode selector switch in above-described embodiment can be single-pole double-throw switch (SPDT), or two and half lead Body is switched (for example：Metal-oxide half field effect transistor), it is conducting for switching one of two current paths, it is another for cut-off.Electric current Guiding path of the path system to provide filtered signal, makes the electric current of filtered signal flow through one of them to reach that pattern is selected The function of selecting.For example, please referring also to Fig. 5 A, Fig. 5 B and Fig. 5 D, when lamp tube drive circuit 505 is not present and by alternating current When source 508 directly supplies electricity to LED straight lamps 500, mode switching circuit may decide that first mode, after being filtered by drive circuit Signal is converted into drive signal, the level of drive signal is matched LED module and lights required level, and is able to correctly drive Dynamic LED module lights.In the presence of lamp tube drive circuit 505, mode switching circuit may decide that second mode, by believing after filtering Number direct drive LED module light；Or first mode can also be determined, still filtered signal is converted into by drive circuit to drive Dynamic signal is lighted with driving LED module.

It is the application circuit square signal of the power supply module of LED according to the embodiment of the utility model one referring to Figure 14 A Figure.Compared to Fig. 5 E illustrated embodiments, the fluorescent lamp of the present embodiment includes rectification circuit 510 and 540, filter circuit 520 and LED Drive module 530, and more increase ballast compatible circuit 1510.Ballast compatible circuit 1510 can be coupled to pin 501 and/or pin Between 502 and rectification circuit 510.In the present embodiment, with ballast compatible circuit 1510 be coupled to pin 501 and rectification circuit it Between exemplified by explanation.Please referring also to Fig. 5 A, Fig. 5 B and Fig. 5 D, lamp tube drive circuit 505 are that there is provided exchange driving for electric ballast Signal is to drive the LED of the present embodiment.

At the beginning of starting due to the drive system of lamp tube drive circuit 505, fan-out capability is not yet promoted to normal condition completely. However, the power supply module of LED turns on and received the exchange driving letter that lamp tube drive circuit 505 is provided immediately at the beginning of startup Number.At the beginning of this can cause startup, lamp tube drive circuit 505 has load and can not smoothly started immediately.For example, fluorescent tube drives The intraware of circuit 505 from the output power taking that it is changed maintain start after operation, output voltage can not normally rise and Cause start fail, or the resonance circuit of lamp tube drive circuit 505 Q values change because of the addition of the load of LED and can not Smoothly start etc..

The ballast compatible circuit 1510 of the present embodiment will be presented open-circuit condition, make alternating current drive signal at the beginning of startup Energy can not be inputted to LED module, and just enters conducting state after predetermined time delay, make the energy of alternating current drive signal Start input to LED lamp module.Above-mentioned ballast compatible circuit 1510 is opened in the alternating current drive signal as external drive signal It is cut-off to begin to input LED straight lamps and rise in a scheduled delay, in being conducting after the scheduled delay, thereby LED Starting characteristic-driving power supply of operation simulation fluorescent lamp start internal gas after latter section of time delay and just discharge and send out Light.Therefore, ballast compatible circuit 1510 further improves the compatibility to the lamp tube drive circuits such as electric ballast 505.

In the present embodiment, rectification circuit 540 is omissible circuit, is represented by dotted lines.

It is the application circuit square signal of the power supply module of LED according to the embodiment of the utility model one referring to Figure 14 B Figure.Compared to Figure 14 A illustrated embodiments, the ballast compatible circuit 1510 of the present embodiment can be coupled to pin 503 and/or pin Between 504 and rectification circuit 540.Such as the explanation of ballast compatible circuit 1510 in Figure 14 A, ballast compatible circuit 1510, which has, to be prolonged The effect started late, makes the input delay predetermined time of alternating current drive signal, it is to avoid the fluorescent tube such as electric ballast driving electricity The problem of road 505 starts failure.

Ballast compatible circuit 1510 can also be corresponded in addition to being placed in such as above-mentioned embodiment between pin and rectification circuit The framework of different rectification circuits and rearrange within rectification circuit.Figure 14 C are referred to, are preferably to be implemented according to the utility model The circuit configuration schematic diagram of the ballast compatible circuit of example.In the present embodiment, rectification circuit system is using the rectified current shown in Fig. 6 C The circuit framework on road 810.Rectification circuit 810 includes rectification unit 815 and end points change-over circuit 541.Rectification unit 815 connects Pin 501 and 502, the coupling rectification output end 511 and 512 of end points change-over circuit 541, and ballast compatible circuit 1510 is coupled to rectification Between unit 815 and end points change-over circuit 541.At the beginning of startup, as external drive signal alternating current drive signal start it is defeated Enter LED straight lamps, alternating current drive signal is only capable of by rectification unit 815, and cannot pass through end points change-over circuit 541 and inside Filter circuit and LED drive module etc., and the parasitic capacitance of the commutation diode 811 and 812 in rectification unit 815 is fairly small It is negligible.Therefore, the equivalent electric of the power supply module of LED perhaps inductance does not couple lamp tube drive circuit 505 at the beginning of startup, Do not influence the Q values of lamp tube drive circuit 505 thus and lamp tube drive circuit 505 can be made along startup.

It is worth noting that, on the premise of end points change-over circuit 541 does not include and inductively or capacitively waits component, rectification unit 815 and end points change-over circuit 541 exchange (that is, rectification unit 815 coupling rectification output end 511 and 512, end points change-over circuit 541 coupling pins 501 and the function of 502) having no effect on ballast compatible circuit 1510.

Furthermore, such as Fig. 6 A to Fig. 6 D explanation, when the pin 501 and 502 of rectification circuit is changed to pin 503 and 504, i.e., Rectification circuit 540 can be used as.That is, the circuit configuration of above-mentioned ballast compatible circuit 1510 can also be changed in rectification circuit 540 Function without influenceing ballast compatible circuit 1510.

In addition, as before end points change-over circuit 541 do not include inductively or capacitively wait component, or rectification circuit 510 or 540 using rectification circuit 610 as shown in Figure 6A when, the parasitic capacitance of rectification circuit 510 or 540 is fairly small, does not also interfere with The Q values of lamp tube drive circuit 505.

It is the application circuit square signal of the power supply module of LED according to the embodiment of the utility model one referring to Figure 14 D Figure.Compared to Figure 14 A illustrated embodiments, the ballast compatible circuit 1510 of the present embodiment is coupled to rectification circuit 540 and filtered electrical Between road 520.Described above, the rectification circuit 540 in the present embodiment, which does not include, inductively or capacitively waits component, therefore does not influence town Flow the function of compatible circuit 1510.

It is the application circuit square signal of the power supply module of LED according to the embodiment of the utility model one referring to Figure 14 E Figure.Compared to Figure 14 A illustrated embodiments, the ballast compatible circuit 1510 of the present embodiment is coupled to rectification circuit 510 and filtered electrical Between road 520.Similarly, the rectification circuit 510 in the present embodiment, which does not include, inductively or capacitively waits component, therefore does not influence ballast The function of compatible circuit 1510.It is to be illustrated according to the circuit of the ballast compatible circuit of the embodiment of the utility model one referring to Figure 14 F Figure.Original state in ballast compatible circuit 1610 is between the compatible input 1611 of ballast and the compatible output end 1621 of ballast etc. It is open circuit in effect.Ballast compatible circuit 1610 is received after signal in the compatible input 1611 of ballast, and town is just turned on through the scheduled time The compatible input 1611 of stream and the compatible output end 1621 of ballast, make the compatible received signal of input 1611 of ballast be sent to town The compatible output end 1621 of stream.

Ballast compatible circuit 1610 includes diode 1612, resistance 1613,1615,1618,1620 and 1622, two-way controllable The compatible input 1611 of silicon 1614, bidirectional trigger diode 1617, electric capacity 1619, ballast and the compatible output end 1621 of ballast.Its In, the resistance of resistance 1613 is quite big, therefore when bidirectional triode thyristor 1614 ends, ballast compatibility input 1611 and ballast are simultaneous It is equivalent upper for open circuit between appearance output end 1621.

Bidirectional triode thyristor 1614 is coupled between the compatible input 1611 of ballast and the compatible output end 1621 of ballast, resistance 1613 be also coupled to it is in parallel with bidirectional triode thyristor 1614 between the compatible input 1611 of ballast and the compatible output end 1621 of ballast. Diode 1612, resistance 1620,1622 and electric capacity 1619 are sequentially series at the compatible input 1611 of ballast and ballast compatibility output Between end 1621, and it is in parallel with bidirectional triode thyristor 1614.The positive pole of diode 1612 is connected with bidirectional triode thyristor 1614, and negative pole It is connected to one end of resistance 1620.The control end of bidirectional triode thyristor 1614 is connected with one end of bidirectional trigger diode 1617, double Be connected to the other end of diac 1617 with one end of resistance 1618, the other end coupling capacitance 1619 of resistance 1618 and The connection end of resistance 1622.Resistance 1615 is coupled to the control end and resistance 1613 of bidirectional triode thyristor 1614 and the company of electric capacity 1619 Connect between end.

When alternating current drive signal (for example：High frequency that electric ballast is exported, high-voltage AC signal) start to be input to town During stream compatibility input 1611, bidirectional triode thyristor 1614 is first in open-circuit condition, alternating current drive signal can not be inputted and is made LED Lamp is also at open-circuit condition.Alternating current drive signal starts to charge to electric capacity 1619 by diode 1612, resistance 1620,1622, It is gradually increasing the voltage of electric capacity 1619.After lasting charging a period of time, the voltage of electric capacity 1619 increases above two-way triggering The threshold value of diode 1617 and turn on triggering bidirectional trigger diode 1617.Then, the bidirectional trigger diode 1617 of conducting Bidirectional triode thyristor 1614 is triggered, bidirectional triode thyristor 1614 is also switched on.Now, the bidirectional triode thyristor 1614 of conducting is electrically connected with town The compatible input 1611 of stream and the compatible output end 1621 of ballast, make alternating current drive signal via the compatible input 1611 of ballast and town The compatible output end 1621 of stream is inputted, and the power supply module of LED is started operation.In addition, the energy stored by electric capacity 1619 is maintained Bidirectional triode thyristor 1614 is turned on, and is changed with the exchange for avoiding alternating current drive signal and is caused bidirectional triode thyristor 1614, i.e., ballast is compatible The cut-off once again of circuit 1610, or it is repeated on the problem of changing between conducting and cut-off.

Through hundreds of milliseconds, the output voltage of electric ballast after the startup of lamp tube drive circuit 505 such as general electric ballast It can bring up on certain voltage value and be unlikely to be loaded influenceing for addition by LED.In addition, the lamp such as electric ballast Tube drive circuit 505 can provided with fluorescent lamp whether the detecting of lighting, if more than judging that fluorescent lamp is different if the non-lighting of time fluorescent lamp Often enter guard mode.Therefore, the time delay of ballast compatible circuit 1610 is preferably between 0.1 second to 3 seconds.

It is worth noting that, resistance 1622 can extra shunt capacitance 1623.The effect of electric capacity 1623 is to react ballast The instantaneous variation of voltage difference between the compatible output end 1621 of compatible input 1611 and ballast, and ballast compatible circuit is not influenceed The effect of 1610 turn on delay.

Figure 14 G are referred to, are the application circuit side of the power supply module of LED straight lamps according to the embodiment of the utility model one Block schematic diagram.Compared to Fig. 5 D illustrated embodiments, the lamp tube drive circuit 505 of the present embodiment drives the LED straight tubes of multiple series connection Ballast compatible circuit 1610 is equiped with lamp 500, and each LED straight lamps 500.For convenience of description, below with two series connection LED straight lamps 500 exemplified by explanation.

Because the time delay of the ballast compatible circuit 1610 in two LED straight lamps 500 is because of factors such as device process errors Influence and with different time delays, therefore the ON time of two ballast compatible circuits 1610 is not consistent.Work as fluorescent tube Drive circuit 505 starts, and the voltage for the alternating current drive signal that lamp tube drive circuit 505 is provided is substantially by two LED straight lamps 500 respectively bear.When then when ballast compatible circuit 1610, one of them is first turned on, the exchange of lamp tube drive circuit 505 is driven The voltage of dynamic signal is nearly fallen on the another LED straight lamps 500 not yet turned on.This causes the LED straight lamps not yet turned on Cross-pressure on 500 ballast compatible circuit 1610 is doubled suddenly, i.e. the compatible input 1611 of ballast and ballast compatibility output Voltage difference is doubled suddenly between end 1621.Due to the presence of electric capacity 1623, the partial pressure effect of electric capacity 1619 and 1623 can wink Between draw high the voltage of electric capacity 1619 so that bidirectional trigger diode 1617 touches bidirectional triode thyristor 1614 and turned on, and makes two LED The ballast compatible circuit 1610 of straight lamp 500 is almost simultaneously turned on.By the addition of electric capacity 1623, the LED of series connection can be avoided straight Time delay between spot because of ballast compatible circuit 1610 is different, causes two-way in the ballast compatible circuit 1610 that first turns on The problem of controllable silicon 1614 ends once again because maintaining the electric current of conducting not enough.Therefore, the compatible electricity of ballast of electric capacity 1623 is added Road 1610 can further change the compatibility for the LED straight lamps connected.

In practical application, the suggestion capacitance of electric capacity 1623 is preferably 10pF~100PF between 10pF~1nF, more Good is 47pF.

It is worth noting that, diode 1612 is the signal progress rectification to be charged to electric capacity 1619.Therefore, refer to Figure 14 C, Figure 14 D and Figure 14 E, the applicable cases after ballast compatible circuit 1610 is configured at rectification unit or rectification circuit, Diode 1612 can be omitted.Therefore, in Figure 14 F, diode 1612 is represented by dotted lines.

It is the circuit diagram of the ballast compatible circuit according to the embodiment of the utility model one referring to Figure 14 H.Ballast is compatible It between the compatible input 1711 of ballast and the compatible output end 1721 of ballast is open circuit that original state in circuit 1710, which is,.Ballast is simultaneous Capacitive circuit 1710 receives signal in the compatible input 1711 of ballast, is less than a predetermined delay level in the level of external drive signal It is cut-off during value, is conducting when the level of external drive signal is more than predetermined delay reference position value, makes the compatible input of ballast 1711 received signals are sent to the compatible output end 1721 of ballast.

Ballast compatible circuit 1710 comprising bidirectional triode thyristor 1712, bidirectional trigger diode 1713, resistance 1714,1716 and 1717 and electric capacity 1715.The compatible input 1711 of first end coupling ballast of bidirectional triode thyristor 1712, control end coupling is two-way to touch One end of hair diode 1713 and one end of resistance 1714, and the other end of the second end coupling resistance 1714.The one of electric capacity 1715 The other end of end coupling bidirectional trigger diode 1713, the other end couples the second end of bidirectional triode thyristor 1712.Resistance 1717 with Electric capacity 1715 is in parallel, therefore is also coupled to the other end of bidirectional trigger diode 1713 and the second end of bidirectional triode thyristor 1712.Electricity The tie point of one end coupling bidirectional trigger diode 1713 and electric capacity 1715 of resistance 1716, the compatible output end of other end coupling ballast 1721。

When alternating current drive signal (for example：High frequency that electric ballast is exported, high-voltage AC signal) start to be input to town During stream compatibility input 1711, bidirectional triode thyristor 1712 is first in open-circuit condition, alternating current drive signal can not be inputted and is made LED Lamp is also at open-circuit condition.The input of alternating current drive signal can ballast compatible circuit 1710 the compatible input 1711 of ballast and Pressure difference is caused between ballast compatibility output end 1721.When alternating current drive signal, anaplasia is big and through reaching foot after a period of time at any time During enough amplitude (predetermined delay reference position values), the level of ballast compatibility output end 1721 is by resistance 1716, electric capacity in parallel 1715 and resistance 1717 and resistance 1714 be reacted to the control end of bidirectional triode thyristor 1712 and trigger bidirectional triode thyristor 1712 and lead It is logical.Now, ballast compatible circuit 1710 turns on and makes LED normal operating.After the conducting of bidirectional triode thyristor 1712, resistance 1716 Electric current is flowed through, and electric capacity 1715 is charged with storing certain voltage in electric capacity 1715.Energy stored by electric capacity 1715 is maintained Bidirectional triode thyristor 1712 is turned on, and is changed with the exchange for avoiding alternating current drive signal and is caused bidirectional triode thyristor 1712, i.e., ballast is compatible The cut-off once again of circuit 1710, or it is repeated on the problem of changing between conducting and cut-off.

It is the circuit diagram of the ballast compatible circuit according to the embodiment of the utility model one referring to Figure 14 I.Ballast is compatible Circuit 1810 includes shell 1812, metal electrode 1813, bimetal leaf 1814 and heater strip 1816.Metal electrode 1813 and add Heated filament 1816 is passed by shell 1812, therefore part is in shell 1812, partly outside shell 1812, and and in outside shell Part has the compatible input 1811 of ballast and the compatible output end 1821 of ballast.Shell 1812 is sealing state, interior filled with inertia Body 1815, for example：Helium.Bimetal leaf 1814 is located in shell 1812, with portion of the heater strip 1816 inside shell 1812 Divide physical and be electrically connected with.There are certain intervals between bimetal leaf 1814 and metal electrode 1813, therefore ballast compatibility is defeated Enter end 1811 and the compatible output end 1821 of ballast is not electrically connected with original state.Bimetal leaf 1814 has two not equalities of temperature The sheet metal of coefficient is spent, the sheet metal temperature coefficient close to metal electrode 1813 side is relatively low, and from metal electrode 1813 farther out Sheet metal temperature coefficient is higher.

When alternating current drive signal (for example：High frequency that electric ballast is exported, high-voltage AC signal) start to be input to town When the compatible input 1811 of stream and ballast compatibility output end 1821, current potential can be formed between metal electrode 1813 and heater strip 1816 Difference.When potential difference is greatly to when can puncture inert gas 1815 and occurring arc discharge, that is, when alternating current drive signal anaplasia at any time Greatly and through reaching after a period of time during predetermined delay reference position value, the heating of inert gas 1815 makes bimetal leaf 1814 toward metal electricity Pole 1813 expands and close to (referring to the direction of figure line arrow), and bimetal leaf 1814 is closed and is formed with metal electrode 1813 Physical and electric connection.Now, the compatible input 1811 of ballast and the compatible output end 1821 of ballast are turned on each other.Then, hand over Stream drive signal flows through heater strip 1816, heater strip 1816 is generated heat.Now, heater strip 1816 in metal electrode 1813 with it is described Bimetal leaf 1814 flows through an electric current when being electric conducting state, makes the temperature of bimetal leaf 1814 maintain to be more than a predetermined conducting temperature Degree.The sheet metal of two different temperature coefficients of bimetal leaf 1814 maintains to be more than predetermined conducting temperature because of temperature, and makes double gold Category piece 1814 is touched to the deviation of metal electrode 1813, thus maintains the closed form of bimetal leaf 1814 and metal electrode 1813 State.

Therefore, ballast compatible circuit 1810 receives signal in the compatible input 1811 of ballast and the compatible output end 1821 of ballast Afterwards, the compatible input 1811 of ballast and the compatible output end 1821 of ballast are just turned on through the scheduled time.

Therefore, ballast compatible circuit of the present utility model, can be coupled between any pin and any rectification circuit, In scheduled delay it is cut-off in external drive signal starts input LED straight lamps, in being conducting after scheduled delay, Or to end when the level of external drive signal is less than predetermined delay reference position value, be more than in the level of external drive signal pre- Surely it is to turn on to postpone during reference position value, and further improves the compatibility to the lamp tube drive circuits such as electric ballast 505.

Figure 15 A are referred to, are the application circuit side of the power supply module of LED straight lamps according to the embodiment of the utility model one Block schematic diagram.Compared to Fig. 5 E illustrated embodiments, the straight lamp of the present embodiment includes rectification circuit 510 and 540, filter circuit 520 and LED drive module 530, and more increase by two ballast compatible circuits 1540.Two ballast compatible circuits 1540, which are respectively coupled to, to be connect Between pin 503 and rectification output end 511 and between pin 504 and rectification output end 511.Please referring also to Fig. 5 A, Fig. 5 B and Fig. 5 D, lamp tube drive circuit 505 be electric ballast there is provided alternating current drive signal to drive the LED of the present embodiment.

The original state of two ballast compatible circuits 1540 is conducting, and is ended after a period of time.Therefore, driven in fluorescent tube At the beginning of circuit 505 starts, alternating current drive signal through pin 503, corresponding ballast compatible circuit 1540 and rectification output end 511 and Rectification circuit 510 or pin 504, corresponding ballast compatible circuit 1540 and rectification output end 511 and rectification circuit 510 flow through LED, and bypassed the filter circuit 520 inside LED and LED drive module 530.Thereby, opened in lamp tube drive circuit 505 At the beginning of dynamic, the equivalent zero load of LED, LED does not influence the Q values of lamp tube drive circuit 505 at the beginning of lamp tube drive circuit 505 starts And lamp tube drive circuit 505 is smoothly started.Two ballast compatible circuits 1540 end after a period of time, and now fluorescent tube drives Dynamic circuit 505 smoothly starts, it is possible to start to drive LED.

Figure 15 B are referred to, are the application circuit side of the power supply module of LED straight lamps according to the embodiment of the utility model one Block schematic diagram.Compared to Figure 15 A illustrated embodiments, the configuration of the two ballast compatible circuits 1540 of the present embodiment is changed to be respectively coupled to Between pin 503 and rectification output end 512 and between pin 504 and rectification output end 512.Similarly, two ballasts are compatible The original state of circuit 1540 is conducting, and is ended after a period of time, lamp tube drive circuit 505 is just started after smoothly starting LED is driven to light.

It is worth noting that, the configuration of two ballast compatible circuits 1540 can also be changed to be respectively coupled to pin 501 with it is whole Between stream output end 511 and between pin 502 and rectification output end 511, or it is changed to be respectively coupled to pin 501 and rectification Between output end 512 and between pin 502 and rectification output end 512, it can still make the smoothly startup of lamp tube drive circuit 505 Just start driving LED afterwards to light.

Figure 15 C are referred to, are the application circuit side of the power supply module of LED straight lamps according to the embodiment of the utility model one Block schematic diagram.Compared to the embodiment shown in Figure 15 A and Figure 15 B, the rectification circuit 540 of the present embodiment, which changes, adopts whole shown in Fig. 6 C Current circuit 810, wherein rectification unit 815 couple pin 503 and 504, end points change-over circuit 541 coupling rectification output end 511 and 512.The configuration of two ballast compatible circuits 1540 is also changed to be respectively coupled between pin 501 and half-wave tie point 819 and connect Between pin 502 and half-wave tie point 819.

At the beginning of lamp tube drive circuit 505 starts, the original state of two ballast compatible circuits 1540 is conducting, exchange driving Signal through pin 501, corresponding ballast compatible circuit 1540, half-wave tie point 819 and rectification unit 815 or pin 502, correspondingly Ballast compatible circuit 1540 and half-wave tie point 819 and rectification unit 815 flow through LED, and bypassed the end inside LED Point change-over circuit 541, filter circuit 520 and LED drive module 530.Thereby, at the beginning of lamp tube drive circuit 505 starts, LED The equivalent zero load of lamp, LED does not influence the Q values of lamp tube drive circuit 505 at the beginning of lamp tube drive circuit 505 starts and drives fluorescent tube Dynamic circuit 505 can smoothly start.Two ballast compatible circuits 1540 end after a period of time, now lamp tube drive circuit 505 Smoothly start, it is possible to start to drive LED.

It is worth noting that, Figure 15 C embodiment can also be changed to rectification circuit 510 using the rectification circuit shown in Fig. 6 C 810, the wherein coupling of rectification unit 815 pin 501 and 502, the coupling rectification output end 511 and 512 of end points change-over circuit 541；Two The configuration of ballast compatible circuit 1540 be also changed to be respectively coupled between pin 503 and half-wave tie point 819 and pin 504 with Between half-wave tie point 819.Thus, ballast compatible circuit 1540 can still make after the smooth startup of lamp tube drive circuit 505 Start driving LED to light.

Figure 15 D are referred to, are the circuit diagram of the ballast compatible circuit according to the embodiment of the utility model one, Ke Yiying For the variation described in the embodiment shown in Figure 15 A to Figure 15 C and correspondence explanation.

Ballast compatible circuit 1640 includes resistance 1643,1645,1648 and 1650, electric capacity 1644 and 1649；Diode 1647 and the compatible input 1641 of 1652, bipolar junction transistors 1646 and 1651, ballast and the compatible output end 1642 of ballast. The compatible input 1641 of the one end of resistance 1645 connection ballast, the other end couples the emitter-base bandgap grading of bipolar junction transistors 1646.It is double to carry The collector of sub- junction transistor 1646 couples the positive pole of diode 1647, and the negative pole of diode 1647 coupling ballast compatibility is exported End 1642.Resistance 1643 and electric capacity 1644 are series between the emitter-base bandgap grading of bipolar junction transistors 1646 and collector, and resistance 1643 and electric capacity 1644 tie point couple bipolar junction transistors 1646 base stage.The one end of resistance 1650 connection ballast is compatible Output end 1642, the other end couples the emitter-base bandgap grading of bipolar junction transistors 1651.The collector coupling of bipolar junction transistors 1651 The positive pole of diode 1652 is connect, and the negative pole of diode 1652 couples the compatible input 1641 of ballast.Resistance 1648 and electric capacity 1649 are series between the emitter-base bandgap grading of bipolar junction transistors 1651 and collector, and the tie point coupling of resistance 1648 and electric capacity 1649 Connect the base stage of bipolar junction transistors 1651.

When the lamp tube drive circuit 505 of electric ballast just starts, the voltage of electric capacity 1644 and 1649 is 0, now double The base stage of carrier junction transistor 1646 and 1651 flows through certain electric current and is in short-circuit condition (i.e. conducting state).Therefore, exist At the beginning of lamp tube drive circuit 505 is activated, ballast compatible circuit 1640 is in the conduction state.Alternating current drive signal through resistance 1643 and Diode 1647 is charged to electric capacity 1644, and similarly electric capacity 1649 is charged through resistance 1648 and diode 1652.Certain time To a certain extent, making the voltage of resistance 1643 and 1648 reduces and ends two-carrier and connect for the voltage rise of electric capacity 1644 and 1649 afterwards Junction transistor 1646 and 1651 (i.e. cut-off state), therefore ballast compatible circuit 1640 switchs to off state.So circuit is operated Design can avoid the inductively or capacitively influence fluorescent tube inside power supply module of the lamp tube drive circuit 505 because of LED from driving electricity The Q values on road 505, it is ensured that the smooth startup of lamp tube drive circuit 505.Therefore, ballast compatible circuit 1640 can improve LED pair The compatibility of electric ballast.

In summary, two ballast compatible circuits of the present utility model, are respectively coupled to the one of rectification circuit and filter circuit The tie point of tie point (i.e. rectification output end 511 and 512 one of them) and pin 501 and rectification circuit and filter circuit is with connecing Between pin 502, or it is respectively coupled to the tie point and pin 503 and rectification circuit and filter circuit of rectification circuit and filter circuit Tie point and pin 504 between, in the external drive signal starts to input the LED straight lamps in a scheduled delay For conducting, in being cut-off after the scheduled delay, improve compatibility of the LED to electric ballast.Figure 16 A are referred to, For the application circuit block schematic diagram of the power supply module of the LED straight lamps according to the embodiment of the utility model one.Compared to Fig. 5 E Illustrated embodiment, the LED straight lamps of the present embodiment include rectification circuit 510 and 540, filter circuit 520 and LED drive module 530, and more increase by two filament artificial circuits 1560.Two filament artificial circuits 1560 be respectively coupled between pin 501 and 502 with And be coupled between pin 503 and 504, the compatibility to improve the lamp tube drive circuit detected with filament, for example：Have Preheat function electric ballast.

Lamp tube drive circuit with filament detecting is at the beginning of startup, and whether the filament that can detect fluorescent tube does not occur normally and Short circuit or the abnormal conditions of open circuit.When judging that filament occurs abnormal, lamp tube drive circuit can stop and enter guard mode.For Lamp tube drive circuit is avoided to judge that LED is abnormal, two filament artificial circuits 1560 can emulate normal filament, and drive fluorescent tube Dynamic circuit normally starts driving LED and lighted.

Figure 16 B are referred to, are the circuit diagram of the filament artificial circuit according to the embodiment of the utility model one.Filament is imitated True circuit 1660 includes electric capacity 1663 and resistance 1665 in parallel, and the respective two ends of electric capacity 1663 and resistance 1665 are respectively coupled to Filament analog end 1661 and 1662.Please referring also to Figure 16 A, the filament emulation end 1661 and 1662 of two filament artificial circuits 1660 Couple pin 501 and 502 and pin 503 and 504.When whether lamp tube drive circuit output detection signal is normal to test filament When, detection signal can make lamp tube drive circuit judge that filament is normal by electric capacity 1663 and resistance 1665 in parallel.

It is worth noting that, the capacitance of electric capacity 1663 is small.Therefore exported when lamp tube drive circuit formally drives LED During high frequency ac signal, the resistance of the remote small resistor 1665 of capacitive reactance (equivalent resistance) of electric capacity 1663.Thereby, filament artificial circuit 1660 in LED normal operating, and the power consumed is fairly small and has little influence on the luminous efficiency of LED.

Figure 16 C are referred to, are the circuit diagram of the filament artificial circuit according to the embodiment of the utility model one.In this reality Apply in example, rectification circuit 510 and/or 540 is using the rectification circuit 810 shown in Fig. 6 C but omits end points change-over circuit 541, and by The function of the substitution end points of filament artificial circuit 1660 change-over circuit 541.That is, the filament artificial circuit 1660 of the present embodiment has simultaneously There is filament to emulate and end points translation function.Please referring also to Figure 16 A, the filament emulation end 1661 of filament artificial circuit 1660 and 1662 coupling pins 501 and 502 and/or pin 503 and 504.The half-wave tie point of rectification unit 815 in rectification circuit 810 819 coupling filament analog ends 1662.

Figure 16 D are referred to, are the circuit diagram of the filament artificial circuit according to the embodiment of the utility model one.Compared to Embodiment shown in Figure 16 C, half-wave tie point 819 is changed to coupling filament analog end 1661, and the emulation of the filament of the present embodiment is electric Still there is filament to emulate and end points translation function simultaneously on road 1660.

Figure 16 E are referred to, are the circuit diagram of the filament artificial circuit according to the embodiment of the utility model one.Filament is imitated True circuit 1760 includes electric capacity 1763 and 1764, and resistance 1765 and 1766.Electric capacity 1763 and 1764 is series at filament simulation Between end 1661 and 1662.Resistance 1765 and 1766 is also series between filament analog end 1661 and 1662, and resistance 1765 and 1766 tie point is coupled with the tie point of electric capacity 1763 and 1764.Please referring also to Figure 16 A, two filament artificial circuits 1760 The filament emulation coupling pin 501 and 502 of end 1661 and 1662 and pin 503 and 504.When lamp tube drive circuit output detecting letter Number with test filament it is whether normal when, detection signal can by series connection electric capacity 1763 and 1764 and resistance 1765 and 1766 and Lamp tube drive circuit is set to judge that filament is normal.

It is worth noting that, the capacitance of electric capacity 1763 and 1764 is small.Therefore when lamp tube drive circuit formally drives LED During the high frequency ac signal of output, the resistance of the resistance 1765 and 1766 of the remote small series connection of capacitive reactance of the electric capacity 1763 and 1764 of series connection Value.Thereby, filament artificial circuit 1760 is in LED normal operating, and the power consumed is fairly small and has little influence on LED Luminous efficiency.Furthermore, electric capacity 1763 or any open circuit of resistance 1765 or short circuit, or electric capacity 1764 or resistance 1766 is any opens The detection signal that lamp tube drive circuit is exported can be still flowed through between road or short circuit, filament analog end 1661 and 1662.Therefore, Electric capacity 1763 or any open circuit of resistance 1765 or short circuit and/or electric capacity 1764 or any open circuit of resistance 1766 or short circuit, filament are imitated True circuit 1760 still can normal operation and with a relatively high serious forgiveness.

Figure 16 F are referred to, are the circuit diagram of the filament artificial circuit according to the embodiment of the utility model one.In this reality Apply in example, rectification circuit 510 and/or 540 is using the rectification circuit 810 shown in Fig. 6 C but omits end points change-over circuit 541, and by The function of the substitution end points of filament artificial circuit 1860 change-over circuit 541.That is, the filament artificial circuit 1860 of the present embodiment is also simultaneously With filament emulation and end points translation function.Filament artificial circuit 1860 has the resistance of negative temperature coefficient, when temperature is high Resistance is less than the resistance when temperature is low.In the present embodiment, filament artificial circuit 1860 contains two negative temperature coefficient resisters 1863 and 1864, it is series between filament analog end 1661 and 1662.Please referring also to Figure 16 A, filament artificial circuit 1860 The filament emulation coupling pin 501 and 502 of end 1661 and 1662 and/or pin 503 and 504.Rectification unit in rectification circuit 810 815 half-wave tie point 819 couples the tie point of negative temperature coefficient resister 1863 and 1864.

When lamp tube drive circuit export detection signal with test filament it is whether normal when, detection signal can pass through negative temperature system Count resistance 1863 and 1864 and lamp tube drive circuit is judged that filament is normal.And negative temperature coefficient resister 1863 and 1864 is because surveying Trial signal or preheating program, temperature are gradually increasing and reduce resistance.When lamp tube drive circuit formally drives LED to light, bear The resistance of temperature coefficient of resistance 1863 and 1864 is reduced to relative low value, and reduces the loss of power consumption.

The resistance of filament artificial circuit 1860 is grasped for 10 ohm or more and in LED is stable preferably when 25 DEG C of room temperature When making, the resistance of filament artificial circuit 1860 is down to 2~10 ohm；More preferably, filament emulation electricity when LED stable operation The resistance on road 1860 is between 3~6 ohm.

Figure 17 A are referred to, are the application circuit side of the power supply module of LED straight lamps according to the embodiment of the utility model one Block schematic diagram.Compared to Fig. 5 E illustrated embodiments, the LED straight lamps of the present embodiment include rectification circuit 510 and 540, filtered electrical Road 520 and LED drive module 530, and more increase overvoltage crowbar 1570.Overvoltage crowbar 1570 couples filtering output end 521 and 522, to detect filtered signal, and when the level of filtered signal is higher than predetermined excess pressure value, strangulation filtered signal Level.Therefore, overvoltage crowbar 1570 can protect the component of LED drive module 530 not damaged because crossing high pressure.Rectification Circuit 540 is represented by dotted lines in the drawings for that can omit.

Figure 17 B are referred to, are the circuit diagram of the overvoltage crowbar according to the utility model preferred embodiment.Overvoltage Protection circuit 1670 includes voltage-regulator diode 1671, for example：Zener diode (Zener Diode), couples filtering output end 521 And 522.Voltage-regulator diode 1671 reaches collapse in the voltage difference (that is, the level of filtered signal) of filtering output end 521 and 522 Turned on during voltage, make voltage difference strangulation on breakdown voltage.Breakdown voltage is preferably in the range of 40-100V, more preferably 55- 75V scope.

Figure 18 A are referred to, are the application circuit side of the power supply module of LED straight lamps according to the embodiment of the utility model one Block schematic diagram.Compared to Figure 16 A embodiment, the LED of the present embodiment comprising rectification circuit 510 and 540, filter circuit 520, The filament artificial circuit 1560 of LED drive module 530 and two, and more increase ballast circuit for detecting 1590.Ballast circuit for detecting 1590 Corresponding rectification circuit in any and rectification circuit 510 and 540 of pin 501,502,503 and 504 can be coupled to.In this reality Apply in example, ballast circuit for detecting 1590 is coupled between pin 501 and rectification circuit 510.

Ballast circuit for detecting 1590 detects alternating current drive signal or the letter inputted by pin 501,502,503 and 504 Number, and judge whether inputted signal is provided by electric ballast according to detecting result.

Figure 18 B are referred to, are the application circuit side of the power supply module of LED straight lamps according to the embodiment of the utility model one Block schematic diagram.Compared to Figure 18 A embodiment, the rectification circuit 540 of the present embodiment is using the rectification circuit 810 shown in Fig. 6 C. Ballast circuit for detecting 1590 is coupled between rectification unit 815 and end points change-over circuit 541.Rectification unit 815 and end points conversion One of them the coupling pin 503 and 504 of circuit 541, another coupling rectification output end 511 and 512.In the present embodiment, rectification list Member 815 couples pin 503 and 504, and end points change-over circuit 541 couples rectification output end 511 and 512.Similarly, ballast is detected Circuit 1590 detects the signal inputted by pin 503 or 504, according to the frequency of signal to determine whether electric ballast institute There is provided.

Furthermore, the present embodiment can also change as rectification circuit 510 using the rectification circuit 810 shown in Fig. 6 C, and by ballast Circuit for detecting 1590 is coupled between rectification unit 815 and end points change-over circuit 541.

Figure 18 C are referred to, are the circuit box schematic diagram of the ballast circuit for detecting according to the utility model preferred embodiment. Ballast circuit for detecting 1590 includes circuit for detecting 1590a and switching circuit 1590b.Switching circuit 1590b couples switch terminal 1591 and 1592.Circuit for detecting 1590a couples the signal that sense terminal 1593 and 1594 flows through sense terminal 1593 and 1594 with detecting. Or, sense terminal 1593 and 1594 can also be omitted and be commonly coupled to switch terminal 1591 and 1592 and flow through switch terminal to detect 1591 and 1592 signal.Therefore, sense terminal 1593 and 1594 is represented by dotted lines in schema.

Figure 18 D are referred to, are the circuit diagram of the ballast circuit for detecting according to the embodiment of the utility model one.Ballast is detectd Slowdown monitoring circuit 1690 includes circuit for detecting 1690a and switching circuit 1690b, is coupled between switch terminal 1591 and 1592.Detecting Circuit 1690a includes bidirectional trigger diode 1691, resistance 1692 and 1696 and electric capacity 1693,1697 and 1698.Switching electricity Road 1690b includes bidirectional triode thyristor 1699 and inductance 1694.

Electric capacity 1698 is coupled between switch terminal 1591 and 1592, and the signal of switch terminal 1591 and 1592 is flowed through to react And produce detecting voltage.When signal is high-frequency signal, the capacitive reactance of electric capacity 1698 is at a fairly low, and the detecting voltage produced is suitable It is small.When signal is low frequency signal or direct current signal, the capacitive reactance of electric capacity 1698 is at a relatively high, and the detecting voltage produced is at a relatively high. Resistance 1692 and electric capacity 1693 are series at the two ends of electric capacity 1698, and the detecting voltage produced to electric capacity 1698 is filtered and in electricity The tie point of resistance 1692 and electric capacity 1693 detects voltage after producing filtering.The filter action system of resistance 1692 and electric capacity 1693 is used to The high-frequency noise of detecting voltage is filtered, with the misoperation for avoiding high-frequency noise from causing.Resistance 1696 and electric capacity 1697 are series at electricity The two ends of appearance 1693, one end that voltage is transferred to bidirectional trigger diode 1691 will be detected after filtering.Resistance 1696 and electricity Hold 1697 to detecting voltage after filtering filter for the second time simultaneously, circuit for detecting 1690a filter effect is more preferably changed.According to Different applications and noise filtering demand, electric capacity 1697 can select to omit and electricity is passed through in one end of bidirectional trigger diode 1691 Resistance 1696 is coupled to the tie point of resistance 1692 and electric capacity 1693；Or, resistance 1696 and electric capacity 1697 are omitted and two-way simultaneously One end of diac 1691 is coupled directly to the tie point of resistance 1692 and electric capacity 1693.Therefore, resistance 1696 in the drawings And electric capacity 1697 is represented by dotted lines.The other end of bidirectional trigger diode 1691 is coupled to the two-way controllable of switching circuit 1690b The control end of silicon 1699.Bidirectional trigger diode 1691 is according to the signal level size received, to decide whether to produce control Signal 1695 processed turns on to trigger bidirectional triode thyristor 1699.The first end coupling switch terminal 1591 of bidirectional triode thyristor 1699, second End couples switch terminal 1592 by inductance 1694.The effect of inductance 1694 is to protect bidirectional triode thyristor 1699 not because flowing through switching The signal at end 1591 and 1592 exceedes the maximum switching electricity for switching voltage peak and maximum repeatedly under voltage build-up rate, cut-off state Rheology rate and damage.

When the signal that switch terminal 1591 and 1592 is received is low-frequency ac signal or direct current signal, the detecting of electric capacity 1698 Voltage makes bidirectional trigger diode 1691 produce control signal 1695 to trigger bidirectional triode thyristor 1699 by sufficiently high.Now, It is short circuit between switch terminal 1591 and 1592, and has bypassed switching circuit 1690b circuits in parallel, for example：It is connected to switching Circuit, circuit for detecting 1690a, electric capacity 1698 between end 1591 and 1592 etc..

When the signal that switch terminal 1591 and 1592 is received is high frequency ac signal, the detecting voltage of electric capacity 1698 is simultaneously not enough So that bidirectional trigger diode 1691 produces control signal 1695 to trigger bidirectional triode thyristor 1699.Now, bidirectional triode thyristor 1699 be cut-off, and high frequency ac signal is mainly transmitted via external circuit or circuit for detecting 1690a.

Therefore, ballast circuit for detecting 1690 may determine that whether the high frequency provided by electric ballast is handed over for the signal of input Signal is flowed, if then making high frequency ac signal flow through external circuit or circuit for detecting 1690a；If otherwise bypassing external circuit or detecing Slowdown monitoring circuit 1690a.

It is worth noting that, electric capacity 1698 can be replaced with the electric capacity in external circuit, such as：Held shown in Fig. 7 A to Fig. 7 C An at least electric capacity for point change-over circuit embodiment, and circuit for detecting 1690a then omits electric capacity 1698, therefore with dotted line table in schema Show.

Figure 18 E are referred to, are the circuit diagram of the ballast circuit for detecting according to the embodiment of the utility model one.Ballast is detectd Slowdown monitoring circuit 1790 includes circuit for detecting 1790a and switching circuit 1790b.Switching circuit 1790b be coupled to switch terminal 1591 and Between 1592.Circuit for detecting 1790a is coupled between sense terminal 1593 and 1594.Circuit for detecting 1790a includes the inductance of mutual inductance 1791 and 1792, electric capacity 1793 and 1796, resistance 1794 and diode 1797.Switching circuit 1790b is switched comprising switching 1799.In the present embodiment, switching switch 1799 is the vague and general formula metal-oxide half field effect transistor of p-type (P-type Depletion Mode MOSFET), it is cut-off when its gate voltage is higher than a critical voltage, is conducting during less than the critical voltage.

Inductance 1792 is coupled between sense terminal 1593 and 1594, with mutual according to the signal for flowing through sense terminal 1593 and 1594 Sense makes inductance 1791 produce detecting voltage to inductance 1791.The level for detecting voltage is uprised with the frequency height of signal, become It is low.

When signal be high-frequency signal when, the induction reactance of inductance 1792 is at a relatively high, mutual inductance to inductance 1791 and produce at a relatively high Detect voltage.When signal be low frequency signal or direct current signal when, the induction reactance of inductance 1792 is at a fairly low, mutual inductance to inductance 1791 and produce Raw at a fairly low detecting voltage.One end ground connection of inductance 1791.The electric capacity 1793 and resistance 1794 of series connection are in parallel with inductance 1791, With detecting voltage produced by receiving inductance 1791, and carry out detecting voltage after producing filtering after High frequency filter.Electricity is detected after filtering Pressure charges with producing control signal 1795 after diode 1797 to electric capacity 1796.Because diode 1797 provides the list of electric capacity 1796 To charging, therefore the level of control signal 1795 is the maximum of the detecting voltage of inductance 1791.The coupling switching switch of electric capacity 1796 1799 control end.The first end of switching switch 1799 is respectively coupled to switch terminal 1591 and 1592 with the second end.

When the signal that sense terminal 1593 and 1594 is received is low-frequency ac signal or direct current signal, produced by electric capacity 1796 Control signal 1795 less than switching switch 1799 critical voltage and make switching switch 1799 turn on.Now, switch terminal 1591 And be short circuit between 1592, and switching circuit 1790b external circuits in parallel have been bypassed, for example：Held shown in Fig. 7 A to Fig. 7 C At least electric capacity etc. in point change-over circuit embodiment.

When the signal that sense terminal 1593 and 1594 is received is high frequency ac signal, the control signal produced by electric capacity 1796 1795 make switching switch 1799 and end higher than the critical voltage of switching switch 1799.Now, high frequency ac signal mainly via External circuit is transmitted.

Therefore, ballast circuit for detecting 1790 may determine that whether the high frequency provided by electric ballast is handed over for the signal of input Signal is flowed, if then making high frequency ac signal flow through external circuit；If otherwise bypassing external circuit.

Next ballast circuit for detecting is added in explanation LED, the conducting (bypass) and cut-off of its switching circuit be not (other It is logical) operation.For example, switch terminal 1591 and 1592 couples the electric capacity connected with LED, i.e. the letter of driving LED straight lamps Number it can also flow through this electric capacity.Connected with internal circuit or to be connected on LED straight the inside that this electric capacity can be arranged on LED straight lamps Outside spot.Please referring also to Fig. 5 A, Fig. 5 B or Fig. 5 D, when lamp tube drive circuit 505 is not present, AC power 508 is provided Low pressure, low-frequency ac drive signal are as external drive signal to drive LED straight lamps 500.Now, ballast circuit for detecting is cut Circuit turn-on is changed, the alternating current drive signal of AC power 508 is directly driven the internal circuit of LED straight lamps.Fluorescent tube driving electricity In the presence of road 505, lamp tube drive circuit 505 produces high pressure, high frequency ac signal to drive LED straight lamps 500.Now, ballast The switching circuit cut-off of circuit for detecting, this electric capacity is connected with the equivalent capacity inside LED straight lamps, thus reaches capacitance partial pressure Effect.Thereby, the voltage for being applied to LED straight lamp internal circuits can be made relatively low (for example：Fall in the range of 100-277V) To avoid internal circuit from being damaged because of high pressure.Or, end points conversion electricity shown in the coupling Fig. 7 of switch terminal 1591 and 1592 A to Fig. 7 C Electric capacity in the embodiment of road, the signal for flowing through half-wave tie point 819 also simultaneously flows through this electric capacity, for example, Fig. 7 A electricity Hold 642, Fig. 7 C electric capacity 842.When lamp tube drive circuit 505 produces high pressure, high frequency ac signal input, switching circuit is cut Only, electric capacity is allow to reach partial pressure effect；When the low-frequency ac signal of civil power or the direct current signal of battery are inputted, switching circuit Turn on to bypass electric capacity.

It is worth noting that, switching circuit can include multiple changeover modules, come simultaneously with providing more than two switch terminals The multiple electric capacity in parallel of connection connection are (for example：Fig. 7 A electric capacity 645 and 646, Fig. 7 A electric capacity 643,645 and 646, Fig. 7 B electricity Hold 743 and 744 and/or 745 and 746, Fig. 7 C electric capacity 843 and 844, Fig. 7 C electric capacity 845 and 846, Fig. 7 C electric capacity 842, 843 and 844, Fig. 7 C electric capacity 842,845 and 846, Fig. 7 C electric capacity 842,843,844,845 and 846), come actually reach by The effect of the equivalent multiple electric capacity bypass connected with LED straight lamps.

In addition, also illustrating how ballast circuit for detecting of the present utility model is cut with the pattern shown in Figure 13 A to Figure 13 I herein Change circuit combined use.Switching circuit replaces in mode for switching circuit in ballast circuit for detecting.In ballast circuit for detecting Circuit for detecting is coupled to one of input pin 501,502,503 and 504, to detect via pin 501,502,503 and 504 It is input to the signal of LED.Circuit for detecting produces control signal according to the frequency of signal, and switching circuit is for controlling the mode One pattern or second mode.

For example, when signal is higher than preassigned pattern switching frequency for high-frequency signal, for example：By lamp tube drive circuit 505 high-frequency signals provided, the control signal of circuit for detecting will make mode switching circuit be second mode, by the filtering Signal directly inputs the LED module afterwards；When signal is less than preassigned pattern switching frequency for low frequency or direct current signal, example Such as：Low frequency or direct current signal that civil power or battery are provided, the control signal of circuit for detecting will make mode switching circuit be first Pattern, the drive circuit is directly inputted by the filtered signal.

Figure 19 A are referred to, are the application circuit side of the power supply module of LED straight lamps according to the embodiment of the utility model one Block schematic diagram.Compared to Figure 16 A illustrated embodiments, the LED straight lamps of the present embodiment include rectification circuit 510 and 540, filtered electrical Road 520, the filament artificial circuit 1560 of LED drive module 530 and two, and more increase auxiliary power module 2510.Accessory power supply mould Block 2510 is coupled between filtering output end 521 and 522.On the detecting filtering output end 521 and 522 of auxiliary power module 2510 Filtered signal, and decide whether to provide auxiliary power to filtering output end 521 and 522 according to detecting result.Believe after filtering Number stop providing or when exchange level is not enough, i.e., when the driving voltage of LED module is less than a predetermined boost voltage, accessory power supply Module 2510 provides auxiliary power, makes the LED drive module 530 can be with continuous illumination.Predetermined boost voltage is according to accessory power supply mould One accessory power supply voltage of block and determine.The filament artificial circuit 1560 of rectification circuit 540 and two can to omit, in the drawings with Dotted line is represented.

Figure 19 B are referred to, are the application circuit side of the power supply module of LED straight lamps according to the embodiment of the utility model one Block schematic diagram.Compared to Figure 19 A illustrated embodiments, the LED straight lamps of the present embodiment include rectification circuit 510 and 540, filtered electrical Road 520, LED drive module 530, two filament artificial circuits 1560 and auxiliary power module 2510, and LED drive module 530 is more Include drive circuit 1530 and LED module 630.Between the coupling drive output 1521 and 1522 of auxiliary power module 2510.It is auxiliary Help power module 2510 to detect the drive signal of drive output 1521 and 1522, and decide whether that offer is auxiliary according to detecting result Electric power is helped to drive output 1521 and 1522.When drive signal stops providing or exchange level is not enough, auxiliary power module 2510 provide auxiliary powers, make the LED module 630 can be with continuous illumination.The filament artificial circuit 1560 of rectification circuit 540 and two is can To omit, it is represented by dotted lines in the drawings.

Figure 19 C are referred to, are the circuit diagram of the auxiliary power module according to the utility model preferred embodiment.Auxiliary Power module 2610 includes energy-storage units 2613 and voltage detection circuit 2614.Auxiliary power module 2610 is simultaneously electric with auxiliary Source anode 2611 and accessory power supply negative terminal 2612 be respectively coupled to filtering output end 521 and 522 or drive output 1521 and 1522.The level of signal on the detecting accessory power supply of voltage detection circuit 2614 anode 2611 and accessory power supply negative terminal 2612, with certainly It is fixed whether outwards to discharge the electric power of energy-storage units 2613 through accessory power supply anode 2611 and accessory power supply negative terminal 2612.

In the present embodiment, energy-storage units 2613 are battery or super capacitor.Voltage detection circuit 2614 is more in auxiliary electricity When the level of the signal of source anode 2611 and accessory power supply negative terminal 2612 is higher than the voltage of energy-storage units 2613, with accessory power supply just Signal on end 2611 and accessory power supply negative terminal 2612 charges to energy-storage units 2613.When accessory power supply anode 2611 and auxiliary electricity When the level of the signal of source negative terminal 2612 is less than the voltage of energy-storage units 2613, energy-storage units 2613 are through accessory power supply anode 2611 And accessory power supply negative terminal 2612 is to external discharge.

Voltage detection circuit 2614 includes diode 2615, bipolar junction transistors 2616 and resistance 2617.Diode 2615 positive pole couples the positive pole of energy-storage units 2613, negative pole coupling accessory power supply anode 2611.The negative pole of energy-storage units 2613 Couple accessory power supply negative terminal 2612.The collector coupling accessory power supply anode 2611 of bipolar junction transistors 2616, emitter-base bandgap grading coupling The positive pole of energy-storage units 2613.The one end of resistance 2617 coupling accessory power supply anode 2611, other end coupling bipolar junction crystal The base stage of pipe 2616.Resistance 2617 makes double when the collector of bipolar junction transistors 2616 is higher than one conducting voltage of emitter-base bandgap grading Carrier junction transistor 2616 is turned on.When the power supply of driving LED straight lamps is normal, the filtered output end 521 of filtered signal Energy-storage units 2613 are charged with the bipolar junction transistors 2616 of 522 and conducting, or drive signal is through drive output 1521 charge with the bipolar junction transistors 2616 of 1522 and conducting to energy-storage units 2613, until bipolar junction transistors Untill the difference of 2616 collector-shooting is equal to or less than conducting voltage.When filtered signal or drive signal stop providing or accurate Position suddenly decline when, energy-storage units 2613 by diode 2615 provide electrical power to LED drive module 530 or LED module 630 with Remain luminous.

It is worth noting that, ceiling voltage stored during the charging of energy-storage units 2613 will be electric at least below auxiliary is put on The conducting voltage of source anode 2611 and one bipolar junction transistors 2616 of voltage of accessory power supply negative terminal 2612.Energy-storage units The voltage exported during 2613 electric discharge by accessory power supply anode 2611 and accessory power supply negative terminal 2612 is less than the electricity of energy-storage units 2613 Press the threshold voltage of a diode 2615.Therefore, when auxiliary power module starts power supply, the voltage provided will be relatively low (being approximately equal to the threshold voltage of diode 2615 and the conducting voltage sum of bipolar junction transistors 2616).Shown in Figure 19 B Embodiment in, when auxiliary power module is powered voltage reduction can be decreased obviously the brightness of LED module 630.Thus, when auxiliary When power module is applied to emergency lighting system or often bright illuminator, user is known that key lighting power supply, for example：Civil power, It is abnormal, and the necessary precautionary measures can be carried out.

Figure 20 is referred to, is the application circuit side of the power supply module of LED straight lamps according to the embodiment of the utility model one Block schematic diagram.Compared to the embodiment of foregoing LED straight lamps, the drive circuit of the LED straight lamps of the present embodiment is external.That is, LED straight lamps 3500 are driven luminous by external driving power supply 3530 through external drive end 3501 and 3502.LED straight lamps LED module 630 and current control circuit 3510 are only included in 3500, and not comprising rectification circuit, filter circuit and drive circuit. External drive end 3501 and 3502 in this embodiment is acted on the pin 501 and 502 shown in Fig. 5 A and Fig. 5 B.

External driving power supply 3530 can be directly connected to civil power or electric ballast, to receive electric power and be converted into external drive Signal simultaneously inputs LED straight lamps 3500 through external drive end 3501 and 3502.External drive signal can be direct current signal, more preferably For galvanic current stream signal.In normal operation, current control circuit 3510 is in the conduction state, makes LED module 630 flow through electric current and light.Current control circuit 3510 can also detect the electric current of LED module 630 to carry out voltage stabilizing and/or steady Flow control, and with linear ripple remove function.In abnormal work situation, current control circuit 3510 ends to stop providing The electric power of external driving power supply 3530 is to LED module 630, to enter guard mode.

When current control circuit 3510 judges the electric current of LED module 630 less than predetermined current value or the lower limit of preset range When, current control circuit 3510 is in fully on state.When current control circuit 3510 judges that the electric current of LED module 630 is high When predetermined current value or the upper limit of preset range (preferably more than the 30% of the rated current of LED module 630), current control electricity Road 3510 is in cut-off state, ends the electric power input LED straight lamps 3500 of external driving power supply 3530.Set according to such Meter, not only in the driving force reduction of external driving power supply 3530, current control circuit 3510 can maintain LED as far as possible Brightness.When the driving force of external driving power supply 3530 is improved extremely, current control circuit 3510 can also avoid LED module 630 damage because of excessively stream, thus reach the function of overcurrent protection.

It is worth noting that, external driving power supply 3530 can also be d. c. voltage signal.In normal operation, electricity Flow control circuit 3510 stablizes the electric current of LED module 630 or (that is, the electric current of LED module 630 is with electricity in linear working state Press linear change).In order to which the electric current for maintaining LED module 630 is stablized or in linear working state, the external institute of driving power supply 3530 The d. c. voltage signal of offer is higher, and the cross-pressure on current control circuit 3510 is higher and causes the work(of current control circuit 3510 Consumption also can be higher.Current control circuit 3510 can be provided with temperature sensor.The direct current provided when external driving power supply 3530 When voltage signal is too high, current control circuit 3510 enters overheat protector, ends the electric power input LED of external driving power supply 3530 Straight lamp 3500.For example：When temperature sensor detects the temperature of current control circuit 3510 more than 120 °, current control electricity Road 3510 enters overheat protector.According to such design, current control circuit 3510 can have excess temperature or overvoltage protection simultaneously Function.

Because of the structure using external driving power supply, the length dimension of lamp holder is shortened.To ensure the entire length symbol of LED Regulation is closed, the length of its lamp holder cripetura is supplied by the length of prolonging lamp tube.Because the length of fluorescent tube has extension, correspondingly extension is pasted The length of lamp plate in fluorescent tube.Under equal lighting condition, the interval being attached between the LED component on the lamp plate of tube inner wall can phase The increasing answered, due to the interval increase between LED component, can so improve temperature when radiating efficiency, reduction LED component operation, And the life-span of LED component can be extended.

In each embodiment of the utility model, it is to include the reeded support of tool that light source 202, which can be improved further, and LED grain (or chip) in groove.Fluorescent material, fluorescent material covering LED grain (or chip), to rise are filled with groove To the effect of Color Conversion.Spy gives explanation, rough compared to the length of traditional LED grain (or chip) and the ratio of width For 1:The length and the ratio of width of LED grain (or chip) employed in 1 square shape, each embodiment of the utility model Example scope can be 2:1 to 10:1, the length and the ratio of width of the LED grain (or chip) used in each embodiment of the utility model Example scope is with 2.5:1 to 5:1 is preferable, and optimum range is 3:1 to 4.5:1, consequently, it is possible to by the length of LED grain (or chip) Length direction arrangement of the direction along fluorescent tube 1 is spent, the average current density and fluorescent tube 1 for improving LED grain (or chip) are whole The problems such as light extraction light shape of body.

In each embodiment of the utility model, light source 202 in a fluorescent tube 1 has multiple, and multiple light sources 202 can arrange Into one or more columns per page, each column light source 202 is arranged along the axial direction (Y-direction) of fluorescent tube 1.When each light for being arranged into one or more columns per page Source 202 is that the groove in each support can be one or more including having during reeded support using foregoing.Wherein, The support of at least one light source 202 has the first side wall arranged and extended along fluorescent tube width along fluorescent tube length direction, with And the second sidewall arranged and extended along fluorescent tube length direction along fluorescent tube width, the first side wall is less than second sidewall.Herein The first side wall, second sidewall refer to surrounding the side wall of groove.In each embodiment of the utility model, in a row light source also Allow the side wall for wherein having the support of one or more light sources using other arrangements or extension mode.

Preferably, each support has groove, corresponding, each support have two the first side walls, two second Side wall.Wherein, two the first side walls are arranged along the length direction of fluorescent tube 1 (Y-direction) and prolonged along the width (X-direction) of fluorescent tube 1 Stretch, two second sidewalls are arranged along the width of fluorescent tube 1 (X-direction) and extended along the length direction (Y-direction) of fluorescent tube 1.First Side wall and second sidewall surround groove.

When user is from the side of fluorescent tube, such as when observing fluorescent tube in X direction, second sidewall can stop that the sight of user is straight Connect and see light source 202, to reduce the discomfort of particle.Wherein, the first side wall " along the width of fluorescent tube 1 " extends, as long as Meet extension trend and the width of fluorescent tube 1 is essentially identical, do not require strictly parallel with the width of fluorescent tube 1, example Such as, the first side wall can have a little differential seat angle with the width of fluorescent tube 1, or, the first side wall can also be fold-line-shaped, arc Shape, waveform etc. are variously-shaped；Second sidewall " along the length direction of fluorescent tube 1 " extends, as long as meeting extension trend and fluorescent tube 1 Length direction is essentially identical, does not require strictly parallel with the length direction of fluorescent tube 1, for example, second sidewall can be with fluorescent tube 1 Length direction have a little differential seat angle, or, second sidewall can also be variously-shaped for fold-line-shaped, arc, waveform etc..

In each embodiment of the utility model, the first side wall is less than second sidewall, and light can be enabled easily to cross branch Frame is exhaled, and through the moderate line space design of density, the discomfort of particle can not be produced in the Y direction, new in this practicality In each embodiment of type, if the first side wall be not less than between second sidewall, each column light source 202 to arrange it is closer, could drop Low granular sensation, improves efficiency.

In each embodiment of the utility model, the inner surface of the first side wall may be configured as it is domatic, relative to by inner surface setting For for the form of bottom wall, domatic setting make it that light more easily passes domatic exhale.It is domatic to include Plane or cambered surface, or, domatic can be the combination of plane and cambered surface.When using plane, the gradient of the plane is about 30 Spend between 60 degree.That is, the domatic angular range between the bottom wall of groove of plane form is 120 degree to 150 degree Between.Preferably, the gradient of plane is about between 15 degree to 75 degree, that is to say, that the bottom wall of the domatic and groove of plane form Between angular range be 105 degree to 165 degree between.

In each embodiment of the utility model, if light source 202 is multiple row, and arranged along the axial direction (Y-direction) of fluorescent tube 1 Cloth, only wanting the support of the light source 202 (i.e. two row light sources 202 of adjacent lamp tube tube wall) of the row of outermost two has along the length of fluorescent tube 1 Two the first side walls of direction (Y-direction) arrangement and two second sidewalls arranged along the width of fluorescent tube 1 (X-direction), That is, the support for the light source 202 that outermost two is arranged has the first side wall that the width (X-direction) along fluorescent tube 1 extends, with And the second sidewall of length direction (Y-direction) extension along fluorescent tube 1, light of other row between this two row light source 202 The racks direction in source 202 is not limited then, for example, the support of middle column (the 3rd row) light source 202, each support can have edge Two the first side walls of the length direction of fluorescent tube 1 (Y-direction) arrangement and arrange along the width of fluorescent tube 1 (X-direction) two the Two side walls or each support can have two the first side walls arranged along the width of fluorescent tube 1 (X-direction) and be grown along fluorescent tube 1 Two second sidewalls of degree direction (Y-direction) arrangement are staggered etc., as long as when user is from the side of fluorescent tube, such as along X When fluorescent tube is observed in direction, the second sidewall of the medium-height trestle of two row light source of outermost 202 can stop that the sight of user is immediately seen light Source 202, you can the discomfort of reduction particle.For outermost two row light source, also allow wherein there are one or more light sources Support side wall using other arrangements or extension mode.

As can be seen here, when multiple light sources 202 are arranged into along a row of fluorescent tube length direction, the support of multiple light sources 202 In, along fluorescent tube width be located at the same side all second sidewalls on same straight line, i.e. the second sidewall of homonymy is formed Similar to the structure of a face wall, to stop that the sight of user is immediately seen light source 202.

When multiple light sources 202 are arranged into the multiple row along fluorescent tube length direction, width of the multiple row light source 202 along fluorescent tube Distribution, and for being located at along the outermost two row light source of fluorescent tube width, in the support of the multiple light sources 202 of each column, along lamp Pipe width is located at all second sidewalls of the same side on same straight line.Consequently, it is possible to which user is along fluorescent tube width From side during fluorescent tube, as long as the second sidewall of the outermost medium-height trestle of two row light source 202 can stop that user's sight is direct See light source 202, then can just reach reduction particle is not the purpose of comfort.And for a middle row or several row light sources 202, the arrangement of its side wall, extension mode are not required, can be identical with outermost two row light source 202, it would however also be possible to employ its His arrangement mode.

Need to point out, in other embodiments, for same LED straight lamp, " fluorescent tube has strong Change portion structure ", " lamp plate uses flexible circuit board ", " fluorescent tube inner peripheral surface scribbles adhesive film ", " fluorescent tube inner peripheral surface scribbles diffusion Layer ", " Covers have diffusion barrier sheet ", " tube inner wall scribbles reflectance coating ", " lamp holder is to include the lamp holder of heat-conducting part ", " lamp holder Be to include the lamp holder of magnetic conductive metal piece ", " light source has support ", in the feature such as " power supply has the sub-assembly of length circuit board ", One or more of technical characteristics can be only included, wherein the content system on " fluorescent tube has strengthening section structure " may be selected from In including one of correlation technique feature of its in embodiment or its combination, wherein on " lamp plate uses bendable circuit The content system of plate ", which can be selected from, includes one of correlation technique feature of its in embodiment or its combination, wherein on " lamp Pipe inner peripheral surface scribbles adhesive film " content system can be selected from include one of correlation technique feature of its in embodiment or its Combination, wherein the content system on " fluorescent tube inner peripheral surface scribbles diffusion layer ", which can be selected from, includes the correlation technique of its in embodiment spy One of levy or its combination, wherein the content system on " Covers have diffusion barrier sheet " can be selected from and include embodiment In one of its correlation technique feature or its combination, wherein the content system on " tube inner wall scribbles reflectance coating " may be selected from In including one of correlation technique feature of its in embodiment or its combination, wherein on " lamp holder is to include heat-conducting part The content system of lamp holder ", which can be selected from, includes one of correlation technique feature of its in embodiment or its combination, wherein on The content system of " lamp holder is to include the lamp holder of magnetic conductive metal piece " can be selected from its that include the correlation technique feature of its in embodiment One of or its combination, wherein the content system on " light source has support " can be selected from and include the correlation technique of its in embodiment One of feature or its combination.

In fluorescent tube has strengthening section structure, the fluorescent tube includes main part and is located at the end at the main part two ends respectively Portion, has a transition part, the two ends of the transition part are all arc, and the end respectively covers between the end and the main part Located at a lamp holder, the external diameter of at least one end is less than the external diameter of the main part, and the correspondence external diameter is less than described The lamp holder of main part external diameter end, its external diameter is equal with the external diameter of the main part.

In lamp plate uses flexible circuit board, by leading between the output end of the flexible circuit board and the power supply Welded between the connection of line routing or the output end of the flexible circuit board and the power supply.In addition, the flexible circuit board Storehouse including a dielectric layer and a line layer；Flexible circuit board can surface coating printing ink material circuit protecting layer, And the function of reflectance coating is realized by the width of increase circumferentially.

In fluorescent tube inner peripheral surface scribbles diffusion layer, the constituent of the diffusion coating include calcium carbonate, calcium halophosphate activated by antimony andmanganese with And at least one in aluminum oxide, and thickener and ceramics activated carbon.In addition, the diffusion layer also can be diffusion barrier sheet and cover Outside light source.

In tube inner wall scribbles reflectance coating, the light source may be disposed on reflectance coating, be arranged at the reflectance coating perforate In or in the side of the reflectance coating.

In burner design, lamp holder can include insulation tube and heat-conducting part, and wherein PUR can fill accommodation space A part or the full accommodation space of filling.Or, lamp holder includes insulation tube and magnetic conductive metal part, wherein, magnetic conductive metal part can be with It is circular or non-circular, it is possible to reduce the contact area with insulation tube by setting emptying aperture structure or scoring structure.Separately Outside, the support to magnetic conductive metal part can also be strengthened in insulation tube by setting supporting part, protuberance and reduce magnetic conductive metal The contact area of part and insulation tube.

In light source design, the light source includes having reeded support, and the LED grain in the groove； The support has the first side wall arranged along the fluorescent tube length direction, and second arranged along the fluorescent tube width Side wall, the first side wall is less than the second sidewall.

In Power Management Design, the sub-assembly of length circuit board has a long circuit board and a short circuit board, long circuit board and Short circuit board is fitted each other to be fixed through gluing mode, and short circuit board is located at long circuit board adjacent peripheral edges.Have on short circuit board Power supply module, is monolithically fabricated power supply.

Power supply module design in, described external drive signal can be low-frequency ac signal (for example：Civil power is carried For), high frequency ac signal (for example：Electric ballast is provided) or direct current signal is (for example：Battery is provided or external driving Power supply), and LED straight lamps can be inputted with the driving framework of the driving framework of single ended power supply or Double-End Source.In both-end electricity The driving framework in source, can support that wherein one end is used only in the way of as single ended power supply to receive external drive signal.

When direct current signal is as external drive signal, the power supply module of LED straight lamps can omit rectification circuit.

Can be with single rectification unit, or double rectification units in the rectification circuit design of power supply module.Double rectifications The first rectification unit and the second rectification unit in circuit are respectively with configuring the pin coupling in the two ends lamp holder of LED straight lamps. Single rectification unit is applicable to the driving framework of single ended power supply, and double rectification units are applied to single ended power supply and Double-End Source Drive framework.And when being configured with an at least rectification unit, go for low-frequency ac signal, high frequency ac signal or straight Flow the drive environment of signal.

Single rectification unit can be half-wave rectifying circuit or full bridge rectifier.Double rectification units can be that double half-waves are whole The combination of current circuit, double-full-bridge rectifier circuit or half-wave rectifying circuit and full bridge rectifier each one.

Can be single-ended pair of pin (totally two pins, other end non-connection pin), double in the pin design of LED straight lamps Hold each single pin (totally two pins), the framework of each pair of pin of both-end (totally four pins).In single-ended pair of pin and each list of both-end Under the framework of pin, the rectification circuit design of single rectification circuit is applicable to.It is applicable under the framework of each pair of pin of both-end Designed in the rectification circuit of double rectification circuits, and outside drive is received using each any pin of both-end or any single-ended double pins Dynamic signal.

In the filter circuit design of power supply module, can have Single Capacitance or π type filter circuits, to filter after rectification Radio-frequency component in signal, and the direct current signal for providing low ripple is filtered signal.Filter circuit can also include LC filtering Circuit, so that high impedance is presented to specific frequency, to meet size of current specification of the UL certifications to specific frequency.Furthermore, filtered electrical Lu Gengke includes the filter unit being coupled between pin and rectification circuit, is done with reducing the electromagnetism caused by the circuit of LED Disturb.When direct current signal is as external drive signal, the power supply module of LED straight lamps can omit filter circuit.

In the LED drive module design of power supply module, comprising LED module or LED module and driving only can be included Circuit.Can also be in parallel with LED drive module by mu balanced circuit, occur overvoltage to ensure that the voltage in LED drive module is unlikely. Mu balanced circuit can be voltage clamping circuit, for example：Zener diode, bi-directional voltage stabilizing pipe etc..When rectification circuit includes condenser network, An electric capacity can be connected two-by-two between in a pin at each end of both-end and a pin of the other end, to be carried out with condenser network Partial pressure act on and as mu balanced circuit.

In the design of LED module is only included, when high frequency ac signal is as external drive signal, an at least rectified current Road includes condenser network (that is, comprising more than one electric capacity), connects, makes with the full-bridge or half-wave rectifying circuit in rectification circuit Condenser network is equivalent to impedance as current regulating circuit and to adjust the electric current of LED module under high frequency ac signal.Thereby, When different electric ballasts provides the high frequency ac signal of different voltages, the electric current of LED module can be adjusted in default The unlikely situation for occurring excessively stream in current range.Furthermore it is possible to energy circuit is released in extra increase, and it is in parallel with LED module, in outside Drive signal stops after providing, auxiliary by filter circuit release can, with caused by reducing filter circuit or other circuits Resonance causes the situation of LED module flashing.In comprising LED module and drive circuit, drive circuit can be that direct current turns DC boosting change-over circuit, DC-DC decompression converting circuit or DC-DC lifting voltage conversion circuit.Drive circuit system To the electric current of LED module is stable in predetermined current value, it can also be heightened according to the high or low of external drive signal come correspondence Or turn down predetermined current value.Furthermore it is possible to which additionally increase mode selector switch makes electric current between LED module and drive circuit LED module is directly inputted by filter circuit or LED module is inputted after overdrive circuit.

Furthermore it is possible to additionally increase protection circuit to protect LED module.Protection circuit can detect the electric current of LED module And/or voltage starts corresponding excessively stream or overvoltage protection to correspond to.

In the ballast circuit for detecting design of power supply module, ballast circuit for detecting is above connected with equivalent with LED drive module Electric capacity it is in parallel, and external drive signal is determined according to the frequency of external drive signal flow through electric capacity or flow through ballast detecting electricity Road (bypasses electric capacity).Above-mentioned electric capacity can be the condenser network of rectification circuit.

Power supply module filament artificial circuit design in, can be single shunt capacitance and resistance or two-in-parallel electric capacity and Resistance or negative temperature parameter circuit.Filament artificial circuit is applied to program preheating start-up type electric ballast, can avoid program Preheating start-up type electric ballast judges the problem of filament is abnormal, improves the compatibility to program preheating start-up type electric ballast Property.And filament artificial circuit has little influence on instantaneous starting type (Instant Start) electric ballast, quick-starting direct The compatibility of other electric ballasts such as (Rapid Start) electric ballast.

In the ballast compatible circuit design of power supply module, it can connect or be driven with filter circuit and LED with rectification circuit Dynamic wired in parallel.In the design connected with rectification circuit, the original state of ballast compatible circuit is cut-off, and is prolonged by predetermined Turned on after the slow time.In the design in parallel with filter circuit and LED drive module, the original state of ballast compatible circuit is to lead It is logical, and end after scheduled delay.Ballast compatible circuit can make instantaneous starting type electric ballast in initial start stage It can smoothly start, and improve the compatibility to instantaneous starting type electric ballast.And ballast compatible circuit have little influence on it is pre- The compatibility of other electric ballasts such as thermal starting type electric ballast, quick-starting direct electric ballast.

In the auxiliary power module design of power supply module, energy-storage units can be battery or super capacitor, with LED module It is in parallel.Auxiliary power module is suitable for inclusion in the design of the LED drive module of drive circuit.

In the LED module design of power supply module, LED module can be (that is, single comprising the multi-string LED component being connected in parallel to each other One LED chip, or multiple LED modules with different colors chips composition LED groups) string, the LED component in each LED component string can be each other Connect and form netted connection.

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

Claims (16)

1. a kind of LED straight lamps, including fluorescent tube, the LED lamp panel in fluorescent tube, the rectification circuit for connecting LED lamp panel, the lamp Respectively there are two pins at pipe two ends, it is characterised in that

The rectification circuit includes the first rectification circuit and the second rectification circuit；

The first end of first rectification circuit is electrically connected via two pins of the first current-limiting circuit and the first end of the fluorescent tube Logical, the second end of first rectification circuit connects the first input end of LED lamp panel；

The first end of second rectification circuit is electrically connected via the second current-limiting circuit and two pins at the second end of the fluorescent tube Logical, the second end of second rectification circuit connects the second input of LED lamp panel；

The LED straight lamps, which further have, includes voltage control device in power supply module, the power supply module, described for controlling Break-make from power supply module to the power supply of the LED lamp panel.

2. LED straight lamps according to claim 1, it is characterised in that the voltage control device be bidirectional triode thyristor or Bidirectional trigger diode.

3. LED straight lamps according to claim 1, it is characterised in that the voltage control device comprise at least it is two-way can Control silicon and bidirectional trigger diode.

4. LED straight lamps according to claim 1, it is characterised in that the control voltage of the voltage control device exists The power supply module is turned on during 400V~700V to the power supply of the LED lamp panel.

5. LED straight lamps according to claim 1, it is characterised in that resistance, electric capacity, electricity are included in the current-limiting circuit Sense or its combination.

6. LED straight lamps according to claim 1, it is characterised in that including two ends and first rectification circuit or the The electric capacity and resistance of two inputs connection of two rectification circuits.

7. LED straight lamps according to claim 6, it is characterised in that the capacitance of the electric capacity is 10NF-1UF, described The resistance of resistance is 1K~20K Ω.

8. LED straight lamps according to claim 1, it is characterised in that input concatenation and the high pressure of LED lamp panel trigger electricity Road current-limiting resistance in parallel.

9. LED straight lamps according to claim 8, it is characterised in that the resistance of the current-limiting resistance be 750K Ω~ 1.5MΩ。

10. LED straight lamps according to claim 1, it is characterised in that described two inputs of LED lamp panel simultaneously connect filtering Electric capacity.

11. LED straight lamps according to claim 1, it is characterised in that between two pins of same one end of the fluorescent tube Filament artificial circuit is coupled with, electric capacity and resistance in parallel are included in the filament artificial circuit.

12. a kind of LED straight lamps, including two ends have the LED lamp panel for including LED module in the fluorescent tube and fluorescent tube of pin, Characterized in that, the LED straight lamps also include the first rectification circuit, the second rectification circuit, wherein first rectification circuit And second each self-contained two diode of rectification circuit；

The pin of the fluorescent tube first end, the pin at the second end are electrically connected with first rectification circuit, the second rectification circuit respectively Connect；

First rectification circuit, the second rectification circuit are electrically connected with the LED module, wherein the positive pole of the LED module point Do not connect the negative electrode of two diodes in first rectification circuit and the second rectification circuit, and the anode of described two diodes The pin of the fluorescent tube first end and the pin at the second end are connected respectively；And the negative pole of the LED module connects described respectively The anode of two diodes in first rectification circuit and the second rectification circuit, and the negative electrode of described two diodes connects institute respectively State the pin of fluorescent tube first end and the pin at the second end.

13. LED straight lamps according to claim 12, it is characterised in that also including end points change-over circuit, end points conversion Circuit is coupled between the pin of the fluorescent tube first end and the first rectification circuit, and first rectification circuit is flowed through for limiting Electric current.

14. LED straight lamps according to claim 12, it is characterised in that first rectification circuit and the second rectified current Road is half-wave rectifying circuit or full-wave rectifying circuit.

15. LED straight lamps according to claim 13, it is characterised in that the end points change-over circuit includes resistance and electricity Hold.

16. LED straight lamps according to claim 12, it is characterised in that further include filter circuit, the filter circuit with The positive pole of the LED module is in parallel with negative pole, and including resistance and electric capacity parallel with one another.