CN205584538U - LED straight -tube lamp - Google Patents

Abstract

The utility model provides a LED straight -tube lamp, includes: the fluorescent tube, first pin and second pin all are coupled the fluorescent tube for receive the external drive signal, rectifier circuit, it is right to be used for the external drive signal carries out the rectification to signal after the production rectification, filter circuit has filtered output end and the 2nd filtered output end, and it is right just to be used for the signal carries out filtering after the rectification to produce the post -filter signal, and LED drive module, contain drive circuit and LED module. Drive circuit is disposed in order to receive post -filter signal and outlet driving signal, just the LED module is used for receiving drive signal and luminous. Drive circuit includes controller and converting circuit. Converting circuit is disposed in order to incite somebody to action post -filter signal conversion becomes drive signal is with the drive the LED module is luminous. Just the controller is used for control converting circuit is used for according to being in filtered output end or the voltage of the 2nd filtered output end is set for drive signal.

Description

A kind of LED straight lamp

This application claims and submit Patent Office of the People's Republic of China, Application No. 201510075925.7, invention entitled on February 12nd, 2015 The priority of the Chinese patent application of " LED daylight lamp ", entire contents is hereby incorporated by the application.

This application claims and submit Patent Office of the People's Republic of China, Application No. 201510104823.3, invention entitled on March 10th, 2015 The priority of the Chinese patent application of " light-emitting diode lamp tube and ballast circuit for detecting ", entire contents is hereby incorporated by In the application.

This application claims and submit Patent Office of the People's Republic of China, Application No. 201510134586.5, invention entitled on March 26th, 2015 The priority of the Chinese patent application of " a kind of light-emitting diode lamp tube ", entire contents is hereby incorporated by the application.

This application claims and submit Patent Office of the People's Republic of China, Application No. 201510136796.8, invention entitled on March 27th, 2015 The priority of the Chinese patent application of " manufacture method of LED daylight lamp ", entire contents is hereby incorporated by the application.

This application claims and submit Patent Office of the People's Republic of China, Application No. 201510284720.x, invention entitled on May 29th, 2015 The priority of the Chinese patent application of " LED driving circuit ", entire contents is hereby incorporated by the application.

This application claims and submit Patent Office of the People's Republic of China, Application No. 201510338027.6, invention entitled on June 17th, 2015 The priority of the Chinese patent application of " a kind of LED daylight lamp ", entire contents is hereby incorporated by the application.

This application claims and submit Patent Office of the People's Republic of China, Application No. 201510373492.3, invention entitled on June 26th, 2015 The priority of the Chinese patent application of " a kind of LED daylight lamp ", entire contents is hereby incorporated by the application.

This application claims and submit Patent Office of the People's Republic of China, Application No. 201510372375.5, invention entitled on June 26th, 2015 The priority of the Chinese patent application of " current control method of LED lamp tube and control circuit thereof ", entire contents is by quoting It is incorporated in the present application.

This application claims and submit Patent Office of the People's Republic of China, Application No. 201510482944.1, invention entitled on August 7th, 2015 The priority of the Chinese patent application of " LED daylight lamp ", entire contents is hereby incorporated by the application.

This application claims and submit Patent Office of the People's Republic of China, Application No. 201510486115.0, invention entitled on August 8th, 2015 The priority of the Chinese patent application of " LED daylight lamp ", entire contents is hereby incorporated by the application.

This application claims and submit Patent Office of the People's Republic of China, Application No. 201510428680.1, invention entitled on July 20th, 2015 The priority of the Chinese patent application of " a kind of LED daylight lamp ", entire contents is hereby incorporated by the application.

This application claims and submit Patent Office of the People's Republic of China, Application No. 201510483475.5, invention entitled on August 8th, 2015 The priority of the Chinese patent application of " LED daylight lamp ", entire contents is hereby incorporated by the application.

This application claims that JIUYUE in 2015 submits Patent Office of the People's Republic of China, Application No. 201510555543.4, invention entitled on the 2nd The priority of the Chinese patent application of " LED straight lamp ", entire contents is hereby incorporated by the application.

This application claims that JIUYUE in 2015 submits Patent Office of the People's Republic of China, Application No. 201510557717.0, invention entitled on the 6th The priority of the Chinese patent application of " LED straight lamp ", entire contents is hereby incorporated by the application.

This application claims that JIUYUE in 2015 submits Patent Office of the People's Republic of China, Application No. 201510595173.7, invention entitled on the 18th The priority of the Chinese patent application of " LED straight lamp ", entire contents is hereby incorporated by the application.

Technical field

This utility model relates to field of lighting appliances, is specifically related to a kind of LED (light-emitting diode) straight lamp.

Background technology

LED illumination technology is just fast-developing and instead of traditional electric filament lamp and fluorescent lamp.Compared to being filled with noble gas and water For the fluorescent lamp of silver, LED straight lamp is without filling hydrargyrum.Therefore, various by seeming the tradition photograph such as fluorescent bulbs and fluorescent tube In domestic that bright option is dominated or the illuminator of working space, LED straight lamp is it is hardly surprising that be increasingly becoming people's height phase The illumination option treated.The advantage of LED straight lamp comprises the ruggedness of lifting and life-span and relatively low power consuming.Accordingly, it is considered to it is all After factor, LED straight lamp would is that the illumination option of escapable cost.

Known LED straight lamp generally comprises fluorescent tube, be located in fluorescent tube and with the circuit board of light source, and is located at lamp tube ends Lamp holder, is provided with power supply, is electrically connected by circuit board between light source and power supply in lamp holder.But, existing LED straight tube Lamp still has some quality problems to need to solve.

Such as, the circuit design of existing LED straight lamp, for meeting relevant authentication specifications and making with existing daylight lamp Between the compatibility driving framework of electric ballast, fail to provide suitable solution.For example, in daylight lamp Portion there is no electronic building brick, comparatively simple for meeting in the specification of the UL certification of luminaire, EMI.But, LED straight lamp Having considerable electronic building brick in lamp, the layout between each electronic building brick is difficult to meet the specification of UL certification, EMI.

Commercially available common electric ballast is mainly divided into instantaneous starting type (Instant Start) electric ballast, preheating start-up type (Program Start) electric ballast two kinds.Electric ballast has resonance circuit, and it drives design special with the load of daylight lamp Property coupling, i.e. electric ballast daylight lamp before lighting for capacitive component, and for resistive device after lighting, it is provided that corresponding Startup program, and make what daylight lamp can be correct to light.And LED is non-linear component, entirely different with the characteristic of daylight lamp. Therefore, LED straight lamp can affect the resonance design of electric ballast, and causes compatibility issue.It is said that in general, pipeline start up by preheating Type electric ballast can detect filament, and traditional LED drive circuit cannot be supported and causes to detect and unsuccessfully cannot start.Separately Outward, electric ballast equivalence is current source, during as the power supply of the DC-DC transducer of LED straight lamp, easily causes Overcurrent-overvoltage or undercurrent are under-voltage, thus result in electronic building brick damage or LED straight lamp cannot stably provide illumination.

Come again, LED drive used by driving signal be direct current signal, but the signal that drives of daylight lamp is the low frequency of civil power, low Pressure AC signal or the high frequency of electric ballast, high-voltage AC signal, when being even applied to Emergency Light, the battery of Emergency Light For direct current signal.Voltage, frequency range drop between different driving signal are big, the most simply carry out rectification and LED can be made to hold concurrently It is used in the lamp socket of daylight lamp (and substituting daylight lamp) with holding, and it is the most right the most simply to carry out rectification (or processing plus filtering etc.) LED component is powered and is easily caused the current value unstable (and it is unstable to easily cause illuminating effect) flowing through LED component.

Utility model content

This utility model provides a kind of new LED straight lamp, and its various aspects (with feature), to solve the problems referred to above.

Adopt the following technical scheme that a kind of LED straight lamp, including: a fluorescent tube；One first pin and one second connects Foot, all couples described fluorescent tube, in order to receive an external drive signal；One first rectification circuit, couples described First pin and described second pin, in order to carry out rectification to described external drive signal, to produce a rectification Rear signal；

One filter circuit, couples with described first rectification circuit, and it is defeated that described filter circuit has one first filtering Go out end and one second filtering output end, and in order to described rectified signal is filtered, to produce a filtering Rear signal；And

One LED drive module, couples with described filter circuit, and described LED drive module comprises a driving electricity Road and a LED module；Described drive circuit has one first drive output and one second drive output, And it is configured to receive described filtered signal and output one driving signal；And described LED module couples described Drive circuit, and in order to receive described driving signal and luminous；

Wherein said drive circuit includes a controller and a change-over circuit；Described change-over circuit is configured to Receive described filtered signal, then described filtered signal be converted into described driving signal with described in driving LED module is luminous；And described controller is for controlling described change-over circuit according to a current sense signal, in order to according in institute The voltage stating the first filtering output end or described second filtering output end sets the size of described driving signal.

In one embodiment, described change-over circuit comprises an on-off circuit and an accumulator, described switch Circuit comprises a switching switch, and described accumulator comprises an inducer and a fly-wheel diode.Described switching is opened One first end closed couples the positive pole of described fly-wheel diode, and one second end couples described second filtering output end, and one controls end coupling Connect described controller to make between described first end and the second end as on or off with the control accepting described controller.Described first Drive output couples described first filtering output end, and described second drive output couples one end of described inducer, and described The other end of inducer couples described first end of described switching switch.The negative terminal of described fly-wheel diode couples described first and drives Outfan.

In one embodiment, described change-over circuit comprises an on-off circuit and an accumulator, described switch Circuit comprises a switching switch, and described accumulator comprises an inducer and a fly-wheel diode.Described inducer One end couple described first filtering output end, the other end couples the one the of the positive pole of described fly-wheel diode and described switching switch One end, and one second end of described switching switch couples described second filtering output end and the second drive output.Described afterflow two The negative pole of pole pipe couples described first drive output.Described controller couples a control end of described switching switch, and is configured To control conducting and the cut-off of described switching switch.

In one embodiment, described change-over circuit comprises an on-off circuit and an accumulator, described switch Circuit comprises a switching switch, and described accumulator comprises an inducer and a fly-wheel diode.Described switching is opened One first end closed couples described first filtering output end, and one second end couples the negative pole of described fly-wheel diode, and one controls end Coupling described controller makes the state between described first end and the second end as on or off with the control receiving described controller. The positive pole of described fly-wheel diode couples described second filtering output end.One end of described inducer couples the institute of described switching switch Stating the second end, the other end couples described first drive output.And described second drive output couples described fly-wheel diode Positive pole.

In one embodiment, described change-over circuit comprises an on-off circuit and an accumulator, described switch Circuit comprises a switching switch, and described accumulator comprises an inducer and a fly-wheel diode.Described inducer One end couple described first filtering output end and the second drive output, the other end couple described switching switch one first end. One second end of described switching switch couples described second filtering output end, and a control end couples described controller with described in reception The control of controller and be on or off.And the positive pole of described fly-wheel diode couples described inducer and described switching switch One junction point, and negative pole couples described first drive output.

In an embodiment, optionally, described accumulator also comprises a capacitor, is coupled to described first and drives Between dynamic outfan and the second drive output, drive defeated in order to stablize described first drive output and second Go out the voltage difference between end.

In an embodiment, optionally, described controller is for according to switching switch described in described current sense signal deciding The dutycycle that conducting and deadline or described switching switch, to regulate described driving signal.And described current sense signal system Represent and flow through described switching switch or flow through the described LED being coupled between described first drive output and the second drive output One electric current of module.

In certain embodiments, described change-over circuit couples described first filtering output end and the second filtering output end, and Comprise an on-off circuit and an accumulator.Described on-off circuit comprises a switching switch, wherein said electric current The representative of detection signal system flows through a current value of described on-off circuit or described accumulator.Furthermore, described current sense signal Described drive circuit can be represented and be supplied to an electricity of described LED module by described first drive output and the second drive output Stream.

The function of LED straight lamp of the present utility model can comprise with effect:

In certain embodiments, when this voltage at described first filtering output end or the second filtering output end is higher than a voltage During value, the big I of described driving signal improves with the increase of this voltage；In certain embodiments, when filtering described first When this voltage of wave output terminal or the second filtering output end is less than a magnitude of voltage, big I the subtracting with this voltage of described driving signal Reduce less；And in certain embodiments, when this voltage at described first filtering output end or the second filtering output end In a voltage range, the big I of described driving signal is increased or decreased with this voltage linear.These effects are conducive to reaching Flow through the current value of LED component stable and therefore illuminating effect more stable.

Accompanying drawing explanation

Fig. 1 is an axonometric chart, the LED straight lamp of display this utility model one embodiment；

Figure 1A is an axonometric chart, and the lamp holder of the lamp tube ends of the LED straight lamp of display another embodiment of this utility model has different chi Very little；

Fig. 2 is a three-dimensional exploded view, the LED straight lamp of display Fig. 1；

Fig. 3 is an axonometric chart, the front portion of the lamp holder of the LED straight lamp of display this utility model one embodiment and top；

Fig. 4 is an axonometric chart, the bottom of the lamp holder of the LED straight lamp of display Fig. 3；

Fig. 5 is an axonometric chart, the another holder structure in display this utility model another embodiment LED straight lamp；

Fig. 6 is a section plan, the lamp plate of LED straight lamp of display this utility model one embodiment be bendable circuit soft board and its End gets over the transition part of fluorescent tube and is welded to connect with the outfan of power supply；

Fig. 7 is a section plan, the bendable circuit soft board tool bilayer of the lamp plate of display this utility model one embodiment LED straight lamp Structure；

Fig. 8 is an axonometric chart, the use of the bendable circuit soft board of the lamp plate of display this utility model one embodiment LED straight lamp and power supply The pad that is welded to connect of printed circuit board (PCB)；

Fig. 9 is a plane graph, the pad configuration of the bendable circuit soft board of the lamp plate of display this utility model one embodiment LED straight lamp；

Figure 10 is a plane graph, and the bendable circuit soft board of the lamp plate of display another embodiment LED straight lamp of this utility model has 3 The pad side by side in string；

Figure 11 is a plane graph, and the bendable circuit soft board of the lamp plate of display this utility model another embodiment LED straight lamp has 3 In two row pad side by side；

Figure 12 is a plane graph, and the bendable circuit soft board of the lamp plate of display this utility model another embodiment LED straight lamp has 4 The pad of pad side by side in string；

Figure 13 is a plane graph, and the bendable circuit soft board of display this utility model still lamp plate of an embodiment LED straight lamp has 4 In two row pad side by side；

Figure 14 is a plane graph, and the pad of the bendable circuit soft board of the lamp plate of display this utility model one embodiment LED straight lamp has Hole；

Figure 15 is a section plan, and display utilizes the pad of the bendable circuit soft board of the lamp plate of Figure 14 and the printed circuit board (PCB) of power supply Welding process；

Figure 16 is a section plan, and display utilizes the pad of the bendable circuit soft board of the lamp plate of Figure 14 and the printed circuit board (PCB) of power supply Welding process, wherein the hole on pad is near the edge of bendable circuit soft board；

Figure 17 is a plane graph, and the pad of the bendable circuit soft board of the lamp plate of display this utility model one embodiment LED straight lamp has Breach；

Figure 18 is a section plan, display enlarged local section of A-A' line along Figure 17；

Figure 19 is an axonometric chart, the bendable circuit soft board of the lamp plate of display another embodiment LED straight lamp of this utility model and power supply Printed circuit board (PCB) is combined into a circuit board assemblies；

Figure 20 is an axonometric chart, another configuration of the circuit board assemblies of display Figure 19；

Figure 21 is an axonometric chart, the power supply in display this utility model one embodiment LED straight lamp；

Figure 22 is an axonometric chart, and in display another embodiment LED straight lamp of this utility model, the circuit board of power supply is vertically soldered to aluminum On the rigid circuit board of system；

Figure 23 is an axonometric chart, in display another embodiment of this utility model, and the double-deck line layer of bendable circuit soft board tool of lamp plate；

Figure 24 A is the application circuit block schematic diagram of the power supply module of the LED straight lamp according to this utility model the first preferred embodiment；

Figure 24 B is the application circuit block schematic diagram of the power supply module of the LED straight lamp according to this utility model the second preferred embodiment；

Figure 24 C is the circuit box schematic diagram of the LED according to this utility model the first preferred embodiment；

Figure 24 D is the application circuit block schematic diagram of the power supply module of the LED straight lamp according to this utility model the 3rd preferred embodiment；

Figure 24 E is the circuit box schematic diagram of the LED according to this utility model the second preferred embodiment；

Figure 25 A is the circuit diagram of the rectification circuit according to this utility model the first preferred embodiment；

Figure 25 B is the circuit diagram of the rectification circuit according to this utility model the second preferred embodiment；

Figure 25 C is the circuit diagram of the rectification circuit according to this utility model the 3rd preferred embodiment；

Figure 25 D is the circuit diagram of the rectification circuit according to this utility model the 4th preferred embodiment；

Figure 26 A is the circuit diagram of the end points change-over circuit according to this utility model the first preferred embodiment；

Figure 26 B is the circuit diagram of the end points change-over circuit according to this utility model the second preferred embodiment；

Figure 26 C is the circuit diagram of the end points change-over circuit according to this utility model the 3rd preferred embodiment；

Figure 26 D is the circuit diagram of the end points change-over circuit according to this utility model the 4th preferred embodiment；

Figure 27 A is the circuit box schematic diagram of the filter circuit according to this utility model the first preferred embodiment；

Figure 27 B is the circuit diagram of the filter unit according to this utility model the first preferred embodiment；

Figure 27 C is the circuit diagram of the filter unit according to this utility model the second preferred embodiment；

Figure 27 D is the circuit diagram of the filter unit according to this utility model the 3rd preferred embodiment；

Figure 27 E is the circuit diagram of the filter unit according to this utility model the 4th preferred embodiment；

Figure 28 A is the circuit diagram of the LED module according to this utility model the first preferred embodiment；

Figure 28 B is the circuit diagram of the LED module according to this utility model the second preferred embodiment；

Figure 28 C is the cabling schematic diagram of the LED module according to this utility model the first preferred embodiment；

Figure 28 D is the cabling schematic diagram of the LED module according to this utility model the second preferred embodiment；

Figure 28 E is the cabling schematic diagram of the LED module according to this utility model the 3rd preferred embodiment；

Figure 29 A is the circuit box schematic diagram of the LED according to this utility model the 3rd preferred embodiment；

Figure 29 B is the circuit box schematic diagram of the drive circuit according to this utility model the first preferred embodiment；

Figure 29 C is the circuit diagram of the drive circuit according to this utility model the first preferred embodiment；

Figure 29 D is the circuit diagram of the drive circuit according to this utility model the second preferred embodiment；

Figure 29 E is the circuit diagram of the drive circuit according to this utility model the 3rd preferred embodiment；

Figure 29 F is the circuit diagram of the drive circuit according to this utility model the 4th preferred embodiment；

Figure 29 G is the circuit box schematic diagram of the drive circuit according to this utility model the second preferred embodiment；

Figure 29 H is district's line relation schematic diagram of the voltage Vin according to this utility model one preferred embodiment and electric current Iout.

Detailed description of the invention

This utility model is on the basis of glass lamp, it is proposed that a kind of new LED straight lamp, to solve to mention in background technology Problem and the problems referred to above.Understandable for enabling above-mentioned purpose of the present utility model, feature and advantage to become apparent from, knot below Close accompanying drawing specific embodiment of the utility model is described in detail.The narration of each embodiment of following this utility model merely to Illustrate and be illustration, be not meant as whole embodiment of the present utility model or this utility model is limited to specific embodiment.

Refer to Fig. 1 and Fig. 2, this utility model provides a kind of LED straight lamp in an embodiment, comprising: a fluorescent tube 1, One is located at the lamp plate 2 in fluorescent tube 1, and is respectively arranged on two lamp holders 3 at fluorescent tube 1 two ends.Fluorescent tube 1 can use plastics fluorescent tube Or glass lamp, the size of described lamp holder is identical or different.Refer to Figure 1A, the size at described lamp holder differs Embodiment in, it is preferable that size is relatively headlight area of bed the 30% to 80% of described less lamp holder.

In one embodiment, the fluorescent tube 1 of LED straight lamp uses the glass lamp of tool reinforced structure, to avoid traditional glass lamp easy Rupture and rupture the problem causing electric shock accidents because of electric leakage, and the problem that plastic lantern is the most aging.The each reality of this utility model Execute in example, it is possible to use glass fluorescent tube 1 is done secondary operations strengthening by chemical mode or physics mode.

Refer to Fig. 3 and Fig. 4, in this utility model one embodiment, the lamp holder 3 of LED straight lamp includes an insulation tube 302, one It is fixedly arranged on the heat-conducting part 303 on insulation tube 302 outer peripheral face, and two the hollow conductive pins 301 being located on insulation tube 302.Institute State the becket that heat-conducting part 303 can be a tubulose.

When making LED straight lamp, after the end region 101 of fluorescent tube 1 is inserted in lamp holder 3, the end region 101 of fluorescent tube 1 is inserted The axial length of lamp holder 3 part accounts between 2nd/1 to three/3rds of heat-conducting part 303 axial length, and such benefit is: On the one hand, it is ensured that hollow conductive pin 301 has enough creep age distances with heat-conducting part 303, is difficult to short circuit and makes people both during energising Get an electric shock and initiation potential；On the other hand, due to the insulating effect of insulation tube 302 so that hollow conductive pin 301 and heat-conducting part 303 Between creep age distance strengthen, it is easier to make people get an electric shock and the test of initiation potential during by high voltage.

Refer to Fig. 5 and Figure 22, in another embodiment, the end of lamp holder 3 ' is provided with a projection 312, the top of projection 312 End offers hole, and its outer rim is provided with the groove 314 that a degree of depth is 0.1 ± 1%mm and is available for conductive pin 53 and positions.Conduction is drawn Foot 53, after passing the hole of lamp holder 3 ' end projection 312, bent is placed on groove 314, the most again with a conduction Metal cap 311 covers projection 312, so, then conductive pin 53 can be fixed on projection 312 and conducting metal cap 311 it Between, in the present embodiment, the internal diameter of conducting metal cap 311 for example, 7.56 ± 5%mm, and the external diameter of projection 312 is for example, 7.23 ± 5%mm, and conductive pin 53 external diameter for example, 0.5 ± 1%mm, therefore conducting metal cap 311 can directly close over Firmly projection 312 is without the most additionally coating viscose, the most just can complete the electrical connection of power supply 5 and conducting metal cap 311.

Refer to Fig. 2,3,12,13, in other embodiments, lamp holder provided by the utility model is provided with for heat radiation Hole 304.Thereby, make way for the heat that power supply module within lamp holder produces to disperse and be in height inside lamp holder without causing Temperature state, to avoid the reliability of lamp holder intraware to decline.Further, hole lamp holder being used for heat radiation is arc.Enter One step ground, on lamp holder, the hole for heat radiation is three camber lines not of uniform size.Further, for the hole of heat radiation on lamp holder For ascending three camber lines gradually changed.Further, on lamp holder, the hole for heat radiation can be above-mentioned arc, camber line Arbitrarily collocation constituted.

In other embodiments, lamp holder includes one for installing the power supply slot (not shown) of power supply module.

In other embodiments, the width of bendable circuit soft board can be widened, owing to circuit board surface includes the electricity of ink material Road protective layer, and ink material have reflection light effect, therefore at the position widened, circuit board itself just can play as The effect of reflectance coating 12 function.Preferably, bendable circuit soft board is along the circumferentially extending length of fluorescent tube 2 and described fluorescent tube 2 inner circumferential Proportion between the girth in face is 0.3 to 0.5.A circuit protecting layer, circuit protection can be coated with outside bendable circuit soft board Layer can be a kind of ink material, has the function increasing reflection, the bendable circuit soft board widened with light source for starting point to circumference Extending, the light of light source can make light more concentrate by the position widened.

Further, any one during lamp plate 2 can be strip aluminium base, FR4 plate or bendable circuit soft board.Due to The fluorescent tube 1 of the present embodiment is glass lamp, if lamp plate 2 uses strip aluminium base or the FR4 plate of rigidity, then work as fluorescent tube Rupture, such as, after breaking in two, whole fluorescent tube is still able to remain the state of straight tube, and at this moment user likely will be considered that LED Straight lamp can also use and go to install voluntarily, is easily caused electric shock accidents.Due to bendable circuit soft board have stronger can Flexible with flexible characteristic, solve rigid strip aluminium base, situation that FR4 plate pliability is not enough with bendability, therefore this reality The lamp plate 2 executing example uses bendable circuit soft board, so after fluorescent tube 1 ruptures, i.e. cannot support the fluorescent tube 1 ruptured and continue to protect Hold as straight tube state, to inform that user LED straight lamp can not use, it is to avoid the generation of electric shock accidents.Therefore, when adopting After bendable circuit soft board, electric shock problem that is broken due to glass tubing and that cause can be alleviated to a certain extent.Hereinafter implement Example i.e. explains using bendable circuit soft board as lamp plate 2.

Refer to Fig. 7, the bendable circuit soft board as lamp plate 2 includes one layer of line layer 2a with conductive effect, light source 202 It is located on line layer 2a, is connected with power sourced electric by line layer 2a.Has the described line layer of conductive effect in this description Can be described as again conductive layer.With reference to Fig. 7, in the present embodiment, bendable circuit soft board can also include one dielectric layer 2b, with line Floor 2a is overlapped on road, and the area equation of dielectric layer 2b and line layer 2a, line layer 2a is used on the surface opposing with dielectric layer 2b Light source 202 is set.Line layer 2a is electrically connected to power supply 5 in order to allow DC current pass through.Dielectric layer 2b with line layer 2a Opposing surface is then adhered on the inner peripheral surface of fluorescent tube 1 by bonding agent sheet 4.Wherein, line layer 2a can be metal level, or Person is furnished with the bus plane of wire (such as copper cash).

In other embodiments, the outer surface of line layer 2a and dielectric layer 2b can be coated with a circuit protecting layer, and described circuit is protected Sheath can be a kind of ink material, has welding resistance and increases the function of reflection.Or, bendable circuit soft board can be one layer Structure, is i.e. only made up of a sandwich circuit layer 2a, and then the circuit at one layer of above-mentioned ink material of Surface coating of line layer 2a is protected Sheath.Whether a sandwich circuit layer 2a structure or two-layer structure (a sandwich circuit layer 2a and one dielectric layer 2b) can be arranged in pairs or groups Circuit protecting layer.Circuit protecting layer the most only can also have light source 202 in the side surface configuration of bendable circuit soft board Side circuit protecting layer is set.It should be noted that bendable circuit soft board is a sandwich circuit Rotating fields 2a or is two-layer structure (a sandwich circuit layer 2a and one dielectric layer 2b), hence it is evident that (two sandwich circuit layers press from both sides one layer of dielectric than three layers of general flexible base board Layer) more pliability and flexibility, therefore, can arrange in pairs or groups (such as: non-straight lamp) with having special formed fluorescent tube 1, and incite somebody to action Bendable circuit soft board is close on fluorescent tube 1 tube wall.Additionally, bendable circuit soft board is close to tube wall for preferably to configure, And the number of plies of bendable circuit soft board is the fewest, then radiating effect is the best, and material cost is the lowest, more environmentally friendly, and pliable and tough effect is also Have an opportunity to promote.

Certainly, bendable circuit soft board of the present utility model is not limited in one layer or double layer circuit plate, in other embodiments, Bendable circuit soft board includes that multilayer line layer 2a and multilayer dielectric layer 2b, dielectric layer 2b and line layer 2a can sequentially be interlocked repeatedly Putting and be located at the line layer 2a side opposing with light source 202, light source 202 is located at the last layer of multilayer line layer 2a, passes through The last layer of line layer 2a connects with power sourced electric.In other embodiments, as the length of bendable circuit soft board of lamp plate 2 Degree is more than the length of fluorescent tube.

Referring to Figure 23, in one embodiment, the bendable circuit soft board as lamp plate 2 the most sequentially includes a First Line Road floor 2a, a dielectric layer 2b and one second line layer 2c, the thickness of the second line layer 2c thickness more than first line layer 2a, The length of lamp plate 2, more than the length of fluorescent tube 1, is wherein not provided with light source 202 at lamp plate 2 and protrudes from the stub area of fluorescent tube 1 On, first line layer 2a and the second line layer 2c is respectively through two through hole 203 and 204 electrical communication, but through hole 203 And 204 the most do not connect to avoid short circuit.

Thereby mode, owing to the second line layer 2c thickness is relatively big, can play support first line layer 2a and the effect of dielectric layer 2b, Allow lamp plate 2 be not likely to produce skew or deformation when being attached on the inner tubal wall of fluorescent tube 1, to promote fine ratio of product simultaneously.Additionally, the One line layer 2a and the second line layer 2c is electrically connected logical so that the circuit layout on first line layer 2a can extend to second Line layer 2c, makes the circuit layout on lamp plate 2 the most polynary.Furthermore, circuit location wiring originally becomes double-deck from monolayer, Line layer monolayer area on lamp plate 2, that is the size on width, can reduce further, allows batch carry out die bond Lamp plate quantity can increase, and promotes productivity ratio.

Further, lamp plate 2 is not provided with light source 202 and the first line layer 2a protruding from the stub area of fluorescent tube 1 and Two line layers 2c, also can directly be utilized to realize the circuit layout of power supply module, and it is bendable to allow power supply module directly be arranged in It is achieved on circuit soft board.

Continuing referring to Fig. 2, lamp plate 2 is provided with some light sources 202, is provided with power supply 5, light source 202 and power supply 5 in lamp holder 3 Between by lamp plate 2 electrical communication.In each embodiment of this utility model, power supply 5 can be single body (the most all power supply modules All it is integrated in parts), and be located in the lamp holder 3 of fluorescent tube 1 one end；Or power supply 5 can also be divided into two parts, it is referred to as Double individualities (the most all power supply modules are separately positioned in two parts), and two parts are respectively arranged in the lamp holder 3 of lamp tube ends. If strengthening section process is made in fluorescent tube 1 only one end, power supply prioritizing selection is single body, and is located at the end region after strengthening 101 In corresponding lamp holder 3.

No matter being single body or double individuality, the generation type of power supply can have Mutiple Choice, and such as, power supply can be a kind of Module after embedding molding, specifically, uses the silica gel (heat conductivity >=0.7w/m k) of a kind of high heat conduction, by mould pair Power supply module carries out embedding molding, obtains power supply, and the power supply that this mode obtains has high insulation, height dispels the heat, profile is more regular Advantage, and can coordinate with other structural members easily.Or, power supply can also be for not make casting glue molding, directly by naked The power supply module of dew is inserted inside lamp holder, or after the exposed power supply module conventional thermal draw is encased, then insert in lamp holder 3 Portion.In other words, in each embodiment of this utility model, power supply 5 can be to carry power supply mould with monolithic printed circuit board (PCB) as shown in Figure 7 The form of group occurs, also can be to occur with the form of single module as shown in figure 21.

Refer to Fig. 2 and combine Figure 21, in an embodiment, one end of power supply 5 has male plug 51, and the other end has metal and inserts Pin 52, the end of lamp plate 2 is provided with female plug 201, and lamp holder 3 is provided with the hollow conductive pin 301 for connecting external power source.Electricity The male plug 51 in source 5 is inserted in the female plug 201 of lamp plate 2, and 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 adaptor, for power supply 5 and lamp plate 2 being electrically connected.When metal ferrule 52 inserts After in hollow conductive pin 301, impact hollow conductive pin 301 through outside stamping tool so that hollow conductive pin 301 occurs gently Micro-deformation, thus fix the metal ferrule 52 on power supply 5, and realize electrical connection.During energising, electric current passes sequentially through sky Heart conductive pin 301, metal ferrule 52, male plug 51 and female plug 201 arrive lamp plate 2, and arrive light source 202 by lamp plate 2. But, the structure of power supply 5 is then not limited to modular pattern shown in Figure 21.Power supply 5 can be a printing being loaded with power supply module Circuit board, then be electrically connected with lamp plate 2 by the connected mode of male plug 51, female plug 201.

In other embodiments, the electric connection between power supply 5 and the lamp plate 2 of any pattern can also use conventional wires routing side Formula replaces above-mentioned male plug 51 and female plug 201, i.e. uses a traditional plain conductor, by one end of plain conductor and power supply electricity Connecting, the other end electrically connects with lamp plate 2.Further, plain conductor can be coated with an insulated sleeve to protect user to avoid touching Electricity.But the mode that wire routing connects likely has the problem of fracture in transportation, slightly worse in quality.

In other embodiments, the electric connection between power supply 5 with lamp plate 2 can pass through rivet nail joint, tin cream gluing, weld or It is to be directly linked together in the way of wire binding.Consistent with the fixed form of aforementioned lamp plate 2, bendable circuit soft board One side surface is bonded and fixed to the inner peripheral surface of fluorescent tube 1 by bonding agent sheet 4, and the two ends of bendable circuit soft board can select solid Determine or be not fixed on the inner peripheral surface of fluorescent tube 1.

If the two ends of bendable circuit soft board are fixed on the inner peripheral surface of fluorescent tube 1, then pay the utmost attention on bendable circuit soft board Female plug 201 is set, then the male plug 51 of power supply 5 is inserted female plug 201 and realizes electrical connection.

If lamp plate 2 is not fixed on the inner peripheral surface of fluorescent tube 1 along the two ends that fluorescent tube 1 is axial, if using wire to connect, rear Continuous move during, due to two ends freely, be susceptible to rock during follow-up moving, thus make it possible to wire and send out Raw fracture.Therefore lamp plate 2 with the connected mode prioritizing selection of power supply 5 for welding.Specifically, with reference to Fig. 6, can directly by Lamp plate 2 is welded on the outfan of power supply 5 after getting over the transition region 103 of strengthening section structure, removes the use of wire from, improves and produces The stability of quality.Now lamp plate 2 need not arrange female plug 201, and the outfan of power supply 5 is also without arranging male plug 51.

As shown in Figure 8, the concrete practice can be that the outfan of power supply 5 reserves power pad a, and stay on power pad a stannum, So that the thickness of the stannum on pad increases, convenient welding, accordingly, the end of lamp plate 2 also reserves light source pad b, And the light source pad b of the power pad a of power supply 5 outfan with lamp plate 2 is welded together.Plane definition by pad place For front, then lamp plate 2 docks the most firm with the connected mode of power supply 5 with the pad in both fronts, but the welding when welding It is pressed in the back side of lamp plate 2 for pressure head typical case, scolding tin is heated across lamp plate 2, the problem being easier reliability occurs. If as shown in figure 14, hole will be outputed in the middle of the light source pad b in lamp plate 2 front, then the superposition that faced up is at power supply 5 Weld on the power pad a in front, then scolding tin heating can directly be melted by welding pressure head, is relatively easy on Practical Operation Realize.

As shown in Figure 8, in above-described embodiment, it is fixed on the inner circumferential of fluorescent tube 1 as the bendable circuit soft board major part of lamp plate 2 On face, being only not to be fixed on the inner peripheral surface of fluorescent tube 1 at two ends, the lamp plate 2 not being fixed on fluorescent tube 1 inner peripheral surface forms one Freedom portion 21, and lamp plate 2 is fixed on the inner peripheral surface of fluorescent tube 1.Freedom portion 21 has above-mentioned pad b.When assembling, from The one end welded by portion 21 and power supply 5 can drive freedom portion 21 to fluorescent tube 1 internal contraction.It should be noted that when as lamp When the bendable circuit soft board of plate 2 has the structure that two sandwich circuit layer 2a and 2c press from both sides a dielectric layer 2b as shown in figure 23, aforementioned Lamp plate 2 is not provided with light source 202 and protrudes from the stub area of fluorescent tube 1 and as freedom portion 21, and freedom portion 21 can be allowed to realize two The connection of sandwich circuit layer and the circuit layout of power supply module.

In the present embodiment, when lamp plate 2 and power supply 5 connect, the surface, light source 202 place on pad b and a and lamp plate is towards same One direction, and on the pad b on lamp plate 2, it is formed with through hole e as shown in figure 14 so that pad b and pad a phase interconnect Logical.When the freedom portion 21 of lamp plate 2 deforms towards the internal contraction of fluorescent tube 1, the printed circuit board (PCB) of power supply 5 and lamp plate 2 it Between welded connection power supply 5 is had a lateral pulling force.Further, compared on the pad a of power supply 5 and lamp plate 2 The aspectant situation of pad b system, the welded connection between printed circuit board (PCB) and the lamp plate 2 of power supply 5 here is to power supply 5 Also has a downward pulling force.This downward pulling force comes from the solder in through hole e and is formed between power supply 5 and lamp plate 2 More strengthen and be firmly electrically connected with for one.

As it is shown in figure 9, the light source pad b of lamp plate 2 is two unconnected pads, electrically connect with light source 202 both positive and negative polarity respectively, The size of pad is about 3.5 × 2mm², the printed circuit board (PCB) of power supply 5 also has pad corresponding thereto, being arranged above of pad Being easy to weld board automatic welding and have reserved stannum, the thickness of stannum can be 0.1 to 0.7mm, and preferred values is 0.3 to 0.5mm More appropriate, it is optimal with 0.4mm.One insulation hole c can be set between two pads, it is to avoid two pads are in welding During cause electrical short because scolding tin is welded together, the rear of this external insulated hole hole c also can arrange location hole d, uses Automatic welding board is allowed can correctly to judge the tram of light source pad b.

The light source pad b of lamp plate at least one, electrically connects with light source 202 both positive and negative polarity respectively.In other embodiments, in order to Can reach the extendibility in compatible and follow-up use, the quantity of light source pad b can have more than one, such as 2,3 Individual, 4 or more than 4.When pad only has 1, corresponding two ends of lamp plate all can electrically connect with power supply respectively, to be formed Primary Ioops, now may utilize the substituted mode of electronic building brick, such as: replace electric capacity as current stabilization assembly with inductance.Such as Figure 10 extremely Shown in 13, when pad is 3, the 3rd pad can serve as ground connection and use, and when pad is 4, the 4th pad can To be used for making signal input part.Accordingly, power pad a is also identical with light source pad b quantity.When pad is more than 3, Arrangement between pad can be that string side by side or lines up two row, is arranged in suitable position according to accommodating size time actually used Putting, causing short circuit as long as the most not electrically connecting.In other embodiments, if by part circuit production at bendable circuit On soft board, light source pad b can be independent one, and number of pads is the fewest, more saves flow process in technique；Number of pads is the most, The electrical connection of bendable circuit soft board and power output end is fixing more to be strengthened.

As shown in figure 14, in other embodiments, the inside of light source pad b can have the structure of welding perforation e, and welding is worn The diameter of hole e can be 1 to 2mm, preferably 1.2 to 1.8mm, most preferably 1.5mm, and the least, the stannum welded is difficult to Pass through.When the power pad a of the power supply 5 and light source pad b of lamp plate 2 welds together, the stannum of welding can pass institute The welding perforation e stated, is then deposited in cooling above welding perforation e and condenses, form the weldering having more than welding perforation e diameter It seems the function of nail that spherical structure g, this ball structure g can play, except through between power pad a and light source pad b Stannum fixing outside, more can strengthen the firm fixed of electric connection because of the effect of ball structure g.

As shown in Figure 15 to Figure 16, in other embodiments, when the welding perforation e of light source pad b is apart from the edge of lamp plate 2 During 1mm, the stannum of welding can be deposited in hole top edges through described hole e, and too much stannum also can be from lamp plate 2 Edge toward lower section reflux, be then coagulated together with the stannum on power pad a, its structure similarly is that a rivet is by lamp plate 2 Follow closely firmly on the circuit board of power supply 5, there is reliable electricity connection function.As shown in FIG. 17 and 18, real at other Executing in example, welding breach f instead of welding perforation e, and the welding perforation of pad is at edge, and the stannum of welding is through described Welding breach f electrically connects power pad a and light source pad b fixing, and stannum is easier to climb up light source pad b and be deposited in welding Around breach f, having more stannum and form the soldered ball having more than welding breach f diameter after cooling condenses, this soldered ball is tied Structure can allow the crystallized ability of electric connection structure strengthen.In the present embodiment, because the design of welding breach, the stannum of welding plays It seem the function of C-shaped nail.

The welding perforation of pad is whether initially formed, or directly punches with welding pressure head or title thermal head during welding, The structure described in the present embodiment can be reached.Described welding its surface contacted with scolding tin of pressure head can be plane, concave surface, Convex surface or these combinations；And described welding pressure head can be strip for limiting the surface of be intended to welding object such as lamp plate 2 Or latticed, perforation is not exclusively covered by the described surface contacted with scolding tin, it is ensured that scolding tin can pass from perforation, works as scolding tin Pass welding perforation be deposited in welding perforation around time, recess is provided that the accommodating position of soldered ball.In other embodiments, as The bendable circuit soft board of lamp plate 2 has a hole, location, can be through hole, location by power pad a and light source pad when welding The pad of b positions accurately.

In above-described embodiment, the light source pad b of the lamp plate 2 and power pad a of power supply 5 can pass through welding manner and fixes, weldering The perforation of dish is whether initially formed, or is directly to punch with welding pressure head during welding.

Refer to Fig. 9, lamp plate 2 also has pad corresponding thereto on the printed circuit board (PCB) of power supply 5, being arranged above just of pad Reserved stannum is had, it is however generally that the thickness preferred values of stannum is that 0.3 to 0.5mm then can be by lamp plate 2 in welding board automatic welding Firmly it is welded on the printed circuit board (PCB) of power supply 5.

Refer to Figure 19 and Figure 20, in other embodiments, the above-mentioned lamp plate 2 fixing through welding manner and power supply 5 Can be with circuit board group component 25 replacement being equipped with power supply module 250.Circuit board group component 25 has a long circuit board 251 With a short circuit board 253, long circuit board 251 and short circuit board 253 fit each other and fix through gluing mode, short circuit board 253 It is positioned at long circuit board 251 adjacent peripheral edges.On short circuit board 253, there is power supply module 25, be monolithically fabricated power supply.Short circuit board 253 The longer circuit board of material 251 is hard, to reach the effect of Power Support module 250.

Long circuit board 251 can be the above-mentioned bendable circuit soft board as lamp plate 2 or flexible base board, and has shown in Fig. 7 Line layer 2a.The mode of the line layer 2a of lamp plate 2 and power supply module 250 electrical connection can have different electricity according to actually used situation Connected mode.As shown in figure 19, circuit power supply module 250 and long circuit board 251 being electrically connected with power supply module 250 Layer 2a is all positioned at the same side of short circuit board 253, and power supply module 250 is directly electrically connected with long circuit board 251.Such as Figure 20 Shown in, the line layer 2a system being electrically connected with power supply module 250 is laid respectively at short by power supply module 250 and long circuit board 251 The both sides of circuit board 253, power supply module 250 penetrates the line layer 2a electrical connection of too short circuit board 253 and lamp plate 2.

As shown in figure 19, in one embodiment, circuit board group component 25 eliminates lamp plate 2 and power supply 5 in previous embodiment and wants Situation about fixing by the mode of welding, but first long circuit board 251 and short circuit board 253 gluing are fixed, then by power supply module 250 and lamp plate 2 line layer 2a electrical connection.Additionally, lamp plate 2 is not limited in one layer or double layer circuit plate as above-mentioned, can Being the most also to comprise another sandwich circuit layer 2c.Light source 202 is located at line layer 2a, by line layer 2a and power supply 5 Electrical communication.As shown in figure 20, in another embodiment, circuit board group component 25 has long circuit board 251 and a short electricity Road plate 253, long circuit board 251 can be bendable circuit soft board or the flexible base board of above-mentioned lamp plate 2, and lamp plate 2 includes a line A road floor 2a and dielectric layer 2b, first by affixed with connecting method, afterwards, then by line layer to dielectric layer 2b and short circuit board 253 2a is attached on dielectric layer 2b and extends on short circuit board 253.Various embodiments above, all without departing from this utility model circuit The range of application of plate molectron 25.

In the various embodiments described above, the length of short circuit board 253 is about 15 millimeters to 40 millimeters, and preferably 19 millimeters to 36 Millimeter, the length of long circuit board 251 can be 800 millimeters to 2800 millimeters, preferably 1200 millimeters to 2400 millimeters.Short electricity The ratio of road plate 253 and long circuit board 251 can be 1:20 to 1:200.

Additionally, in the foregoing embodiments, when lamp plate 2 and power supply 5 are to fix through welding manner, the end of lamp plate 2 is also It is not fixed on the inner peripheral surface of fluorescent tube 1, it is impossible to the fixing power supply 5 that supports of safety, in other embodiments, if power supply 5 must Must be fixed on separately in the lamp holder of fluorescent tube 1 end region, then lamp holder can be relatively long and have compressed the effective light-emitting area of fluorescent tube 1.

Refer to Figure 22, in one embodiment, the lamp plate used is the rigid circuit board of aluminum 22, because of its end can be relative consolidate Being scheduled on the end region of fluorescent tube 1, power supply 5 then uses the mode being perpendicular to rigid circuit board 22 to be weldingly fixed on rigid circuit board Above 22 ends, one is easy to the enforcement of welding procedure, and two carry out lamp holder 3 need not to have the total length that be enough to carry power supply 5 Space and length can be shortened, so can increase the effective light-emitting area of fluorescent tube.Additionally, in the foregoing embodiments, power supply 5 On in addition to being equiped with power supply module, in addition it is also necessary to the hollow conductive pin 301 of welding plain conductor and lamp holder 3 is formed electrically separately Connect.In the present embodiment, can be used directly on power supply 5, the conductive pin 53 as power supply module is electric with lamp holder 3 Connect, be not required to additionally weld other wire again, be more beneficial for the simplification of processing procedure.

Further, such as when using the external driving power supply structure to LED straight lamp driven for emitting lights, then lamp holder can be shortened Length dimension.For ensureing that the entire length of LED meets regulation, the length of its lamp holder cripetura is supplied by the length of prolonging lamp tube. Because the length of fluorescent tube has prolongation, correspondingly extend the length of the lamp plate being attached in fluorescent tube.Under equal lighting condition, it is attached in fluorescent tube The interval between LED component on the lamp plate of wall can be strengthened accordingly, owing to the interval between LED component increases, so can improve scattered The temperature when thermal efficiency, reduction LED component operation, and the life-span of LED component can be extended.

Refer to Figure 24 A, for the application circuit of the power supply module of the LED straight lamp according to this utility model the first preferred embodiment Block schematic diagram.Alternating current power supply 508 is to provide ac supply signal.Alternating current power supply 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 alternating current power supply 508, and turns Change alternating current drive signal into as external drive signal.Lamp tube drive circuit 505 can be electric ballast, in order to by civil power The converted high frequency of signal, the alternating current drive signal of high pressure.The kind of common electronics ballast, such as: instantaneous starting type (Instant Start) electric ballast, preheating start-up type (Program Start) electric ballast, quick-starting direct (Rapid Start) electric ballasts etc., LED straight lamp of the present utility model is the most applicable.The voltage of alternating current drive signal is more than 300V, Preferably voltage range is 400-700V；Frequency is more than 10kHz, and preferable frequency range is 20k-50kHz.LED straight lamp 500 connects Receiving external drive signal, in the present embodiment, external drive signal is the alternating current drive signal of lamp tube drive circuit 505, and quilt Driven for emitting lights.In the present embodiment, LED straight lamp 500 is the driving framework of single ended power supply, and same one end lamp holder of fluorescent tube has First pin the 501, second pin 502, first pin the 501, second pin 502, in order to receive external drive signal.This reality First pin the 501, second pin 502 executing example couples (that is, electrical connection or directly or indirectly connection) to lamp tube drive circuit 505 to receive alternating current drive signal.

It should be noted that lamp tube drive circuit 505 is omissible circuit, therefore indicate with dotted line in the drawings.Work as fluorescent tube When drive circuit 505 omits, alternating current power supply 508 couples with first pin the 501, second pin 502.Now, the first pin 501, the second pin 502 receives the ac supply signal that alternating current power supply 508 is provided, with as external drive signal.

In addition to the application of above-mentioned single ended power supply, LED straight lamp 500 of the present utility model can also be applied to both-end list pin Circuit structure.Refer to Figure 24 B, for the power supply module of LED straight lamp according to this utility model the second preferred embodiment Application circuit block schematic diagram.Shown in Figure 24 A, first pin the 501, second pin 502 is respectively placed in LED straight tube The relative both-end lamp holder of the fluorescent tube of lamp 500 to form each single pin of both-end, remaining circuit connect and function then with shown in Figure 24 A Circuit is identical.

Then, Figure 24 C is referred to, for the circuit box schematic diagram of the LED according to this utility model the first preferred embodiment. The power supply module of LED mainly comprises the first rectification circuit 510, filter circuit 520 and LED drive module 530.First is whole Current circuit 510 couples first pin the 501, second pin 502, to receive external drive signal, and carries out external drive signal Rectification, is then exported rectified signal by first rectification output end the 511, second rectification output end 512.External drive in this Signal can be the alternating current drive signal in Figure 24 A and Figure 24 B or ac supply signal, possibly even for direct current signal not Affect the operation of LED.Filter circuit 520 couples with described first rectification circuit, in order to be filtered rectified signal； I.e. filter circuit 520 couples first rectification output end the 511, second rectification output end 512 to receive rectified signal, and to whole After stream, signal is filtered, and is then exported filtered signal by outfan 522 after outfan 521, second filters after the first filtering. LED drive module 530 couples with filter circuit 520, with signal after accepting filter luminescence；I.e. LED drive module 530 coupling After after connecing the first filtering, outfan 521, second filters, outfan 522 is with signal after accepting filter, and then drives LED to drive mould LED component (not shown) in block 530 is luminous.This part please refer to after the explanation of embodiment.

It should be noted that in the present embodiment, the first rectification output end the 511, second rectification output end 512 and the first filtering After rear outfan 521, second filters, the quantity of outfan 522 is two, during actual application then according to the first rectification circuit 510, Between filter circuit 520 and LED drive module 530 each circuit signal transmission increase in demand or minimizing, couple between the most each circuit End points can be one or more than.

Furthermore, the power supply module of the LED shown in Figure 24 C and each embodiment of the power supply module of following LED, except being suitable for Outside the LED straight lamp shown in Figure 24 A and Figure 24 B, for comprising two pins in order to transmit the illuminating circuit framework of electric power, example As: bulb lamp, PAL lamp, intubate the various different illuminating lamps such as electricity-saving lamp (PLS lamp, PLD lamp, PLT lamp, PLL lamp etc.) Lamp socket specification the most applicable.

Refer to Figure 24 D, for the application circuit of the power supply module of the LED straight lamp according to this utility model the 3rd preferred embodiment Block schematic diagram.Alternating current power supply 508 is to provide ac supply signal.Lamp tube drive circuit 505 receives alternating current power supply 508 Ac supply signal, and be converted into alternating current drive signal.LED straight lamp 500 receives the exchange of lamp tube drive circuit 505 and drives Dynamic signal, and be driven to emit light.In the present embodiment, LED straight lamp 500 is both-end (each pair of pin) power supply, the one of fluorescent tube End lamp holder has first pin the 501, second pin 502, and other end lamp holder has the 3rd pin the 503, the 4th pin 504.The One pin the 501, second pin the 502, the 3rd pin 503 and the 4th pin 504 are coupled to lamp tube drive circuit 505 jointly to connect Receive alternating current drive signal, to drive the LED component (not shown) in LED straight lamp 500 luminous.Alternating current power supply 508 can be Civil power, and lamp tube drive circuit 505 can be stabilizer or electric ballast.

Refer to Figure 24 E, for the circuit box schematic diagram of the LED according to this utility model the second preferred embodiment.LED Power supply module mainly comprises the first rectification circuit 510, filter circuit 520, LED drive module 530 and the second rectification circuit 540. First rectification circuit 510 couples first pin the 501, second pin 502, in order to receive and rectification the first pin 501, second connects The external drive signal that foot 502 is transmitted；Second rectification circuit 540 couples the 3rd pin the 503, the 4th pin 504, in order to connect Receive the external drive signal that also rectification the 3rd pin the 503, the 4th pin 504 is transmitted.It is to say, the power supply module of LED The first rectification circuit 510 can be comprised and the second rectification circuit 540 exports in first rectification output end the 511, second rectification jointly End 512 output rectified signal.Filter circuit 520 couples first rectification output end the 511, second rectification output end 512 to connect Receive rectified signal, and rectified signal is filtered, then exported by after outfan 521, second filters after the first filtering End 522 output filtered signal.LED drive module 530 couples outfan after outfan 521, second filters after the first filtering 522 with signal after accepting filter, and then drives the LED component (not shown) in LED drive module 530 luminous.

The power supply module of the LED of the present embodiment can apply the Double-End Source framework to Figure 24 D.Significantly, since The power supply module of the LED of the present embodiment has the first rectification circuit 510 and the second rectification circuit 540 simultaneously, it is also possible to application To the single ended power supply framework of Figure 24 A, B, receive external drive signal (ac supply signal that comprises in previous embodiment, friendship Stream drives signal etc.).Certainly, in addition to the present embodiment, remaining each embodiment the power supply module of LED can also apply to directly The driving framework of stream signal.

Refer to Figure 25 A, for the circuit diagram of the rectification circuit according to this utility model the first preferred embodiment.Rectification circuit 610 is bridge rectifier, comprises first commutation diode the 611, second commutation diode the 612, the 3rd commutation diode 613 And the 4th commutation diode 614, in order to received signal is carried out all wave rectification.The positive pole coupling of the first commutation diode 611 Connecing the second rectification output end 512, negative pole couples the second pin 502.It is defeated that the positive pole of the second commutation diode 612 couples the second rectification Going out end 512, negative pole couples pin 501.The positive pole of the 3rd commutation diode 613 couples the second pin 502, and negative pole couples first Rectification output end 511.The positive pole of commutation diode 614 couples pin 501, and negative pole couples the first rectification output end 511.

When the signal that first pin the 501, second pin 502 receives is AC signal, the operation of rectification circuit 610 describes such as Under.When AC signal is in positive half-wave, AC signal is sequentially through the first pin 501, commutation diode 614 and the first rectification Flow into after outfan 511, and sequentially after second rectification output end the 512, first commutation diode 611 and the second pin 502 Flow out.When AC signal is in negative half-wave, AC signal is sequentially through the second pin 502, the 3rd commutation diode 613 and Flow into after one rectification output end 511, and sequentially through the second rectification output end the 512, second commutation diode 612 and pin 501 Rear outflow.Therefore, no matter AC signal is in positive half-wave or negative half-wave, the equal position of positive pole of the rectified signal of rectification circuit 610 In the first rectification output end 511, negative pole is respectively positioned on the second rectification output end 512.Illustrate according to aforesaid operations, rectification circuit 610 The rectified signal of output is full wave rectified signal.

When first pin the 501, second pin 502 couples DC source and receives direct current signal, the operation of rectification circuit 610 It is described as follows.When the first pin 501 couples the anode of DC source and the second pin 502 couples the negative terminal of DC source, directly Stream signal sequentially flows into after the first pin 501, commutation diode 614 and the first rectification output end 511, and sequentially through second Flow out after rectification output end the 512, first commutation diode 611 and the second pin 502.When the first pin 501 couples unidirectional current When the negative terminal in source and the second pin 502 couple the anode of DC source, AC signal is sequentially through the second pin the 502, the 3rd rectification Flow into after diode 613 and the first rectification output end 511, and sequentially through second rectification output end the 512, second commutation diode 612 and first flow out after pin 501.Similarly, no matter direct current signal is the most defeated through first pin the 501, second pin 502 Entering, the positive pole of the rectified signal of rectification circuit 610 is respectively positioned on the first rectification output end 511, and it is defeated that negative pole is respectively positioned on the second rectification Go out end 512.

Therefore, no matter rectification circuit 610 received signal at the present embodiment is AC signal or direct current signal, all can be correct Output rectified signal.

Refer to Figure 25 B, for the circuit diagram of the rectification circuit according to this utility model the second preferred embodiment.Rectification circuit 710 comprise the first commutation diode 711 and the second commutation diode 712, in order to received signal is carried out halfwave rectifier.The The anode of one commutation diode 711 couples the second pin 502, and negative terminal couples the first rectification output end 511.Second commutation diode The anode of 712 couples the first rectification output end 511, and negative terminal couples the first pin 501.Second rectification output end 512 regards reality should With and can omit or ground connection.

Then the operation of explanation rectification circuit 710 is as follows.

When AC signal is in positive half-wave, the signal level that AC signal inputs at the first pin 501 is higher than at the second pin 502 The signal level of input.Now, the first commutation diode 711 and the second commutation diode 712 are in inverse inclined cut-off state, Rectification circuit 710 stops output rectified signal.When AC signal is in negative half-wave, AC signal is defeated at the first pin 501 The signal level entered is less than the signal level in the second pin 502 input.Now, the first commutation diode 711 and the second rectification Diode 712 is in along inclined conducting state, and AC signal is via first commutation diode the 711, first rectification output end 511 And flow into, and flowed out by the second rectification output end 512 or another circuit of LED or earth terminal.Illustrate according to aforesaid operations, The rectified signal of rectification circuit 710 output is half wave rectified signal.

Refer to Figure 25 C, for the circuit diagram of the rectification circuit according to this utility model the 3rd preferred embodiment.Rectification circuit 810 comprise rectification unit 815 and end points change-over circuit 541, to carry out halfwave rectifier.In the present embodiment, rectification unit 815 For half-wave rectifying circuit, comprise the first commutation diode 811 and the second commutation diode 812, in order to carry out halfwave rectifier.The The anode of one commutation diode 811 couples the second rectification output end 512, and negative terminal couples half-wave junction point 819.Second rectification two pole The anode of pipe 812 couples half-wave junction point 819, and negative terminal couples the first rectification output end 511.End points change-over circuit 541 couples half Ripple junction point 819, and the first pin 501 and the second pin 502, in order to be connect the first pin 501 and the second pin 502 The signal received is transferred to half-wave junction point 819.By the end points translation function of end points change-over circuit 541, rectification circuit 810 can To provide two inputs (coupling the first pin 501 and end points of the second pin 502) and two outfan (the first rectification output ends 511 and second rectification output end 512).

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

When AC signal is in positive half-wave, AC signal is sequentially through the first pin 501 (or second pin 502), end points conversion Flow into after circuit 541, half-wave junction point the 819, second commutation diode 812 and the first rectification output end 511, and by LED Another circuit flow out.When AC signal is in negative half-wave, AC signal is also flowed into by another circuit of LED, then warp Second rectification output end the 512, first commutation diode 811, half-wave junction point 819, end points change-over circuit 541 and the first pin 501 (or second pins 502) flow out afterwards.

It should be noted that end points change-over circuit 541 can comprise resistance, electric capacity, inductance or a combination thereof, in order to reach this reality By novel function and purpose.

In actual application, rectification unit 815 and end points change-over circuit 541 can be exchanged and not affect halfwave rectifier function.Please join See Figure 25 D, for the circuit diagram of the rectification circuit according to this utility model the 4th preferred embodiment.First commutation diode 811 Anode couple the second pin 502, the negative terminal of the second commutation diode 812 couples the first pin 501, and the first commutation diode The negative terminal of 811 and the anode of the second commutation diode 812 couple half-wave junction point 819 simultaneously.End points change-over circuit 541 couples half Ripple junction point 819, and the first rectification output end 511 and the second rectification output end 512.When AC signal is in positive half-wave, AC signal is also flowed into by another circuit of LED, then through the second rectification output end 512 (or first rectification output end 511), Flow out after end points change-over circuit 541 half-wave junction point the 819, second commutation diode 812 and the first pin 501.When exchange letter When number being in negative half-wave, AC signal is sequentially through second pin the 502, first commutation diode 811, half-wave junction point 819, end Point change-over circuit 541 and the first rectification output end 511 (or second rectification output end 512) flow into afterwards, and by another electricity of LED Road is flowed out.

What deserves to be explained is, the end points change-over circuit 541 in the embodiment shown in Figure 25 C and Figure 25 D can be omitted, therefore with Dotted line represents.After Figure 25 C omits end points change-over circuit 541, the first pin 501 and the second pin 502 are coupled to half-wave even Contact 819.After Figure 25 D omits end points change-over circuit 541, the first rectification output end 511 and the second rectification output end 512 coupling It is connected to half-wave junction point 819.

First rectification circuit 510 of Figure 24 C illustrated embodiment can use the rectification circuit 610 shown in Figure 25 A.

Rectification circuit shown in Figure 25 C and Figure 25 D can omit end points change-over circuit 541 and not affect LED straight lamp and operate institute The rectification function needed.When the halfwave rectifier of Figure 25 B to Figure 25 D selected by the first rectification circuit 510 and the second rectification circuit 540 During rectification circuit, along with AC signal be in positive half-wave or negative half-wave, the first rectification circuit 510 and the second rectification circuit 540 its One of be responsible for inflow, another is responsible for outflow.Furthermore, if the first rectification circuit 510 and the second rectification circuit 540 are selected simultaneously Figure 25 C or Figure 25 D, or Figure 25 C and Figure 25 D each, then the end points change-over circuit 541 of one of them can have current limliting/ Pressure limiting, protection, the function of current/voltage regulation, another end points change-over circuit 541 can omit.

Refer to Figure 26 A, for the circuit diagram of the end points change-over circuit according to this utility model the first preferred embodiment.End points Change-over circuit 641 comprises electric capacity 642, and one end of electric capacity 642 couples first pin 501 and the second pin 502, the other end simultaneously Couple half-wave junction point 819.Electric capacity 642 has equivalent impedance to AC signal.The frequency of AC signal is the lowest, electric capacity 642 Equivalent impedance the biggest；The frequency of AC signal is the highest, and the equivalent impedance of electric capacity 642 is the least.Therefore, the present embodiment Electric capacity 642 in end points change-over circuit 641 has high-pass filtering effect.Furthermore, in end points change-over circuit 641 and LED LED component is series connection, and has under equiva lent impedance, has the effect of current limliting, pressure limiting to LED component, can avoid LED group The electric current of part and cross-pressure are too high and damage LED component.It addition, select the capacitance of electric capacity 642 by the frequency coordinating AC signal, More LED component can be had the effect of electric current, voltage-regulation.

It should be noted that end points change-over circuit 641 can additionally comprise electric capacity 645 and/or electric capacity 646.Electric capacity 645 one end Coupling half-wave junction point 819, the other end couples the 3rd pin 503.Electric capacity 646 one end couples half-wave junction point 819, the other end Couple the 4th pin 504.That is, electric capacity 645 and 646 is with half-wave junction point 819 as common connection end, adjusts as electric current The electric capacity 642 of electric capacity couples common connection end and the first pin 501 and the second pin 502.Under such circuit framework, the The electric capacity 642 and 645 connected, or is had between one pin 501 and the second pin 502 one of them and the 3rd pin 503 Have, between one pin 501 and the second pin 502 one of them and the 4th pin 504, the electric capacity 642 and 646 connected.By string The equivalent impedance of the electric capacity of connection, AC signal is by dividing potential drop.The ratio of the equivalent impedance of the electric capacity according to series connection, can control Cross-pressure in the cross-pressure of the electric capacity 642 in the first rectification circuit 510 and filter circuit 520 and LED drive module 530, makes Within the electric current of the LED module flowing through LED drive module 530 is limited to a load current value, and avoid too high voltages to ruin simultaneously Damage filter circuit 520 and LED drive module 530 and reach to protect filter circuit 520 and the effect of LED drive module 530.

Refer to Figure 26 B, for the circuit diagram of the end points change-over circuit according to this utility model the second preferred embodiment.End points Change-over circuit 741 comprises electric capacity 743 and 744.One end of electric capacity 743 couples the first pin 501, and the other end couples half-wave and connects Point 819.One end of electric capacity 744 couples the second pin 502, and the other end couples half-wave junction point 819.Shown in Figure 26 A End points change-over circuit 641, end points change-over circuit 741 is mainly that electric capacity 642 changes into two electric capacity 743 and 744.Electric capacity The capacitance of 743 and 744 can be identical, it is also possible to regarding the first pin 501 and the second pin 502 received signal size For difference.

Similarly, end points change-over circuit 741 can additionally comprise electric capacity 745 and/or electric capacity 746, is respectively coupled to the 3rd pin 503 and the 4th pin 504.So, arbitrary with the 3rd pin 503 and the 4th pin in the first pin 501 and the second pin 502 Arbitrary electric capacity all having series connection in 504 and reach the function of dividing potential drop effect and protection.

Refer to Figure 26 C, for the circuit diagram of the end points change-over circuit according to this utility model the 3rd preferred embodiment.End points Change-over circuit 841 comprises electric capacity 842,843 and 844.Electric capacity 842 and 843 is series at the first pin 501 and half-wave junction point Between 819.Electric capacity 842 and 844 is series between the second pin 502 and half-wave junction point 819.At such circuit framework Under, arbitrary short circuit between electric capacity 842,843 and 844, between the first pin 501 and half-wave junction point 819 pin and second Electric capacity is all still suffered from and the effect of still current limiting between pin 502 and half-wave junction point 819.Therefore, for user false touch LED Lamp and occur get an electric shock time, excessive current can be avoided to flow through human body and cause user get an electric shock injury.The capacitance of electric capacity 843,844 The preferably half of the capacitance of electric capacity 842.

Similarly, end points change-over circuit 841 can additionally comprise electric capacity 845 and/or electric capacity 846, is respectively coupled to the 3rd pin 503 and the 4th pin 504.So, arbitrary with the 3rd pin 503 and the 4th pin in the first pin 501 and the second pin 502 Arbitrary electric capacity all having series connection in 504 and reach the function of dividing potential drop effect and protection.

Dividing potential drop on the electric capacity 645 and 646 of above-described embodiment, electric capacity 745 and 746 and electric capacity 845 and 846 is preferably less than 500V, such as: the scope of 100-500V, is more preferably less than 400V, such as: the scope of 300-400V.

Refer to Figure 26 D, for the circuit diagram of the end points change-over circuit according to this utility model the 4th preferred embodiment.End points Change-over circuit 941 comprises electric fuse 947,948.Electric fuse 947 one end couples the first pin 501, and the other end couples half-wave even Contact 819.Electric fuse 948 one end couples the second pin 502, and the other end couples half-wave junction point 819.Thereby, connect when first When foot 501 and the arbitrary electric current flowed through of the second pin 502 are higher than the rated current of electric fuse 947 and 948, electric fuse 947 and 948 will fuse accordingly and open a way, to reach the function of overcurrent protection.

Certainly, the first pin 501 in the embodiment of above-mentioned end points change-over circuit and the second pin 502 change the 3rd pin 503 into And the 4th pin 504 (and the 3rd pin 503 and the 4th pin 504 change the first pin 501 and the second pin 502 into), Conversion is to the second rectification circuit 540.

The capacitance of the electric capacity in above-mentioned end points change-over circuit embodiment is preferably between 100pF～100nF.It addition, electric capacity can Equivalent replacement is carried out with two in parallel or series or above electric capacity.Such as: electric capacity 642,842 can come by two capacitances in series Replace.One of them capacitance of 2 electric capacity can be chosen in the range of 1.0nF～2.5nF, preferably chooses 1.5nF；Another The individual scope selected from 1.5nF～3.0nF, preferably chooses 2.2nF.

Refer to Figure 27 A, for the circuit box schematic diagram of the filter circuit according to this utility model the first preferred embodiment.In figure Drawing the first rectification circuit 510 only in order to represent annexation, not filter circuit 520 comprises the first rectification circuit 510.Filter Wave circuit 520 comprises filter unit 523, couples the first rectification output end 511 and the second rectification output end 512, to receive rectification The rectified signal that circuit is exported, and filter output filtered signal after the ripple in rectified signal.Therefore, believe after filtering Number waveform smoother compared with the waveform of rectified signal.Filter circuit 520 also can further include filter unit 524, is coupled to rectification Between circuit and corresponding pin, such as: the first rectification circuit 510 and first pin the 501, first rectification circuit 510 and second Pin the 502, second rectification circuit 540 and the 3rd pin 503 and the second rectification circuit 540 and the 4th pin 504, in order to spy Determine frequency to be filtered, to filter the characteristic frequency of external drive signal.At the present embodiment, filter unit 524 is coupled to first Between pin 501 and the first rectification circuit 510.Filter circuit 520 also can further include filter unit 525, is coupled to first and connects Between one of them diode of foot 501 and the second pin 502 one of them and the first rectification circuit 510 or the 3rd pin 503 With the 4th pin 504 one of them with the second rectification circuit 540 diode of one of them, in order to reduce or to filter electromagnetic interference (EMI).At the present embodiment, filter unit 525 be coupled to the first pin 501 with the first rectification circuit 510 one of them two Between the pipe (not shown) of pole.Owing to the visual practical situations of filter unit 524 and 525 is added or omitted, therefore with dotted line in figure Represent it.

Refer to Figure 27 B, for the circuit diagram of the filter unit according to this utility model the first preferred embodiment.Filter unit 623 comprise an electric capacity 625.One end of electric capacity 625 couples the first rectification output end 511 and the first filtering output end 521, another End couples the second rectification output end 512 and the second filtering output end 522, with to by the first rectification output end 511 and the second rectification The rectified signal of output 512 output carry out low-pass filtering, believe form filtering with the radio-frequency component that filters in rectified signal after Number, then exported by the first filtering output end 521 and the second filtering output end 522.

Refer to Figure 27 C, for the circuit diagram of the filter unit according to this utility model the second preferred embodiment.Filter unit 723 is π type filter circuit, comprises electric capacity 725, inductance 726 and electric capacity 727.It is whole that one end of electric capacity 725 couples first Stream outfan 511 also couples the first filtering output end 521 through inductance 726 simultaneously, and the other end couples the second rectification output end 512 And second filtering output end 522.Inductance 726 is coupled between the first rectification output end 511 and the first filtering output end 521. One end of electric capacity 727 couples the first rectification output end 511 through inductance 726 and couples the first filtering output end 521, separately simultaneously One end couples the second rectification output end 512 and the second filtering output end 522.

From the point of view of in equivalence, filter unit more than 623 shown in filter unit 723 relatively Figure 27 B inductance 726 and electric capacity 727.And And inductance 726 and electric capacity 727 are also with as electric capacity 725, have low-pass filtering effect.Therefore, the filter unit 723 of the present embodiment Compared to the filter unit 623 shown in Figure 27 B, there is more preferably high frequency and filter ability, the waveform of the filtered signal exported The most smooth.

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

Refer to Figure 27 D, for the circuit diagram of the filter unit according to this utility model the 3rd preferred embodiment.Filter unit 824 electric capacity 825 comprising parallel connection and inductance 828.One end of electric capacity 825 couples the first pin 501, and it is whole that the other end couples first Stream outfan 511, to carry out high-pass filtering to the external drive signal inputted by the first pin 501, to filter external drive letter Low-frequency component in number.One end of inductance 828 couples the first pin 501, and the other end couples the first rectification output end 511, with right The external drive signal inputted by the first pin 501 carries out low-pass filtering, to filter the radio-frequency component in external drive signal.Cause This, the combination of electric capacity 825 and inductance 828 can present high impedance to characteristic frequency in external drive signal.It is, parallel connection Electric capacity and inductance present maximum to the equiva lent impedance of external drive signal in characteristic frequency.

Via suitably choosing capacitance and the inductance value of inductance 828 of electric capacity 825, the mid frequency (resistance of impedance correspondence frequency filter can be made Anti-maximum) it is positioned in characteristic frequency, mid frequency isWherein L is the inductance value of inductance 828, and C is electric capacity The capacitance of 825.Such as: preferably mid frequency is in the range of 20-30kHz, more preferably 25kHz, therefore there is filter unit The LED of 824 may conform to the safety requirement of UL certification.

It should be noted that filter unit 824 can comprise resistance 829.It is whole that resistance 829 is coupled to the first pin 501 and first Between stream outfan 511.Therefore, resistance 829 is connected with electric capacity 825 in parallel, inductance 828.For example, resistance 829 It is coupled between the first pin 501 and the electric capacity 825 of parallel connection and inductance 828, or resistance 829 is coupled to the first rectification output Between end 511 and the electric capacity 825 of parallel connection and inductance 828.At the present embodiment, resistance 829 is coupled to the first pin 501 and also Between electric capacity 825 and the inductance 828 of connection.Resistance 829 is in order to adjust electric capacity 825 and the Q of lc circuit that inductance 828 is constituted Value, to be more suitable for the applied environment that different Q value requires.Owing to resistance 829 is inessential assembly, thus in the present embodiment with Dotted line represents.

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 preferably For less than 1mH, it is possible to use air core inductor or I-shaped inductance.The resistance 829 preferably nurse difficult to understand more than 50, is more preferably more than 500 Ao Mu.

In addition to the filter circuit shown in the above embodiments, traditional low pass or band filter all can be as this utility model Filter unit and be used in filter circuit.

Refer to Figure 27 E, for the circuit diagram of the filter unit according to this utility model the 4th preferred embodiment.In this enforcement In example, within filter unit 925 is arranged at the rectification circuit 610 shown in Figure 25 A, with reduce rectification circuit 610 and/or other The caused electromagnetic interference of circuit (EMI).In the present embodiment, filter unit 925 comprises EMI electric capacity, is coupled to the first pin In the second pin 502 and the 3rd commutation diode 613 just between 501 and the anode of commutation diode 614 and it is also coupled to simultaneously Between end, with reduce the first pin 501 and the second pin 502 the positive half-wave transmission of reception alternating current drive signal time adjoint electricity Magnetic disturbance.The EMI electric capacity of filter unit 925 is also coupled between the negative terminal and the first pin 501 of the second commutation diode 612 And be also coupled between the negative terminal of the first commutation diode 611 and the second pin 502, to reduce the first pin 501 and second simultaneously Electromagnetic interference adjoint during negative half wave loops of the received alternating current drive signal of pin 502.It is, rectification circuit 610 is complete Ripple rectification circuit to comprise first commutation diode the 611, second commutation diode the 612, the 3rd commutation diode 613 and the 4th whole Stream diode 614, the first commutation diode the 611, second commutation diode the 612, the 3rd commutation diode 613 and the 4th rectification Two commutation diode the-the first commutation diodes 611 and the 3rd commutation diode 613, wherein the 3rd rectification two in diode 614 The anode of pole pipe 613 and the negative terminal of the first commutation diode 611 connect formation one first filtering junction point, the first commutation diode 611, another two commutation diode in the second commutation diode the 612, the 3rd commutation diode 613 and the 4th commutation diode 614 -the second commutation diode 612 and the 4th commutation diode 614, the wherein anode of the 4th commutation diode 614 and the second rectification two The negative terminal of pole pipe 612 connects formation one second filtering junction point, and the EMI electric capacity of filter unit 925 is coupled to the first filtering and connects Between point and the second filtering junction point.

It addition, refer to Figure 25 C and Figure 26 A, Figure 26 B and Figure 26 C, similar, Figure 26 A, Figure 26 B and Figure 26 C are wherein One of circuit in arbitrary electric capacity be all coupled to connect with the arbitrary diode in the circuit of Figure 25 C and the first pin 501 and second Between foot 502 (or the 3rd pin 503 and the 4th pin 504), therefore arbitrary or complete in Figure 26 A, Figure 26 B and Figure 26 C Portion's electric capacity can use as the EMI electric capacity of filter unit, and reduces the function of the electromagnetic interference of circuit.It is, figure The first rectification circuit 510 in 24C can be half-wave rectifying circuit and comprise two rectification two poles, and two commutation diodes are wherein One of anode connect another negative terminal and form the arbitrary or whole electric capacity in half-wave junction point, Figure 26 A, Figure 26 B and Figure 26 C Be coupled to the half-wave junction point of two commutation diodes and said two pin at least one；Figure 26 A, Figure 26 B and Figure 26 C In arbitrary or whole electric capacity be coupled to the half-wave junction point of two commutation diodes and described 3rd pin and described 4th pin extremely Lack one of them.

Furthermore, filter unit 925 couples the first pin 501 and the second pin 502, and equivalent makes the first pin 501 connect with second It it is short circuit between foot 502.The most referring also to Figure 26 A to Figure 26 C, coordinates filter unit 925 to make the first pin 501 and the Be the effect of short circuit between two pins 502, electric capacity 645 and 646 in each embodiment, electric capacity 745 and 746, electric capacity 845 and 846 all can omit one of them.No matter external communication signal is exported by the first pin 501 or the second pin 502, electric capacity 645 And 646, electric capacity 745 and 746, electric capacity 845 and 846 still can reach the effect of dividing potential drop after all can omitting one of them.

It should be noted that the EMI electric capacity in Figure 27 E illustrated embodiment can be as the filtering list in Figure 27 D illustrated embodiment The electric capacity of unit 824 and arrange in pairs or groups with the inductance of filter unit 824, and reach characteristic frequency presents high impedance and reduces electromagnetism simultaneously The function of interference.It is, when rectification circuit is full-wave rectifying circuit, the electric capacity 825 of filter unit 824 is coupled to all-wave Between first filtering junction point and the second filtering junction point of rectification circuit, when rectification circuit is half-wave rectifying circuit, filtering is single The electric capacity 825 of unit 824 be coupled to the half-wave junction point of half-wave rectifying circuit and said two pin at least one.

Refer to Figure 28 A, for the circuit diagram of the LED module according to this utility model the first preferred embodiment.LED module The anode of 630 couples the first filtering output end 521, and negative terminal couples the second filtering output end 522.LED module 630 comprises at least One LED unit 632, i.e. light source in previous embodiment.It is connected in parallel to each other when LED unit 632 is for two or more.Each The anode of LED unit couples the anode of LED module 630, to couple the first filtering output end 521；Bearing of each LED unit End couples the negative terminal of LED module 630, to couple the second filtering output end 522.LED unit 632 comprises at least one LED group Part 631.When LED component 631 is plural number, LED component 631 is connected into a string, the anode coupling of first LED component 631 Connecing the anode of affiliated LED unit 632, the negative terminal of first LED component 631 couples the next one (second) LED component 631. And the anode of last LED component 631 couples the negative terminal of previous LED component 631, last LED component 631 Negative terminal couples the negative terminal of affiliated LED unit 632.

It should be noted that LED module 630 can produce current sense signal S531, represent LED module 630 flows through electric current Size, to be used as detecting, control LED module 630.

Refer to Figure 28 B, for the circuit diagram of the LED module according to this utility model the second preferred embodiment.LED module The anode of 630 couples the first filtering output end 521, and negative terminal couples the second filtering output end 522.LED module 630 comprises at least Two LED unit 732, and the anode of each LED unit 732 couples the anode of LED module 630, and negative terminal coupling Connect the negative terminal of LED module 630.LED unit 732 comprises at least two LED component 731, in affiliated LED unit 732 The connected mode of LED component 731 as described by Figure 28 A, the negative pole of LED component 731 and next LED component 731 Positive pole couple, and the positive pole of first LED component 731 couples the positive pole of affiliated LED unit 732, and last LED The negative pole of assembly 731 couples the negative pole of affiliated LED unit 732.Furthermore, between the LED unit 732 in the present embodiment also that This connects.The positive pole of the n-th LED component 731 of each LED unit 732 is connected to each other, and negative pole is also connected to each other.Cause This, the connection between the LED component of the LED module 630 of the present embodiment is netted connection.

Compared to the embodiment of Figure 29 A to Figure 29 G, the LED drive module 530 of above-described embodiment comprise LED module 630 but Do not comprise drive circuit.

Similarly, the LED module 630 of the present embodiment can produce current sense signal S531, represents flowing through of LED module 630 Size of current, to be used as detecting, control LED module 630.

It addition, in actual application, the quantity of the LED component 731 that LED unit 732 is comprised is preferably 15-25, more preferably For 18-22.

Refer to Figure 28 C, for the cabling schematic diagram of the LED module according to this utility model the first preferred embodiment.The present embodiment The annexation of LED component 831 with shown in Figure 28 B, illustrate as a example by three LED unit at this.Positive wire 834 Receive with cathode conductor 835 and drive signal, to provide electrical power to each LED component 831, for example: positive wire 834 coupling Connecing the first filtering output end 521 of aforementioned filter circuit 520, cathode conductor 835 couples the second filter of aforementioned filter circuit 520 Wave output terminal 522, with signal after accepting filter.For convenience of description, n-th in each LED unit is divided into by figure Same LED group 833.

Positive wire 834 connects first LED component 831, the most as shown in the figure leftmost side LED in the LED unit of three, the leftmost side (left side) positive pole of three LED component in group 833, and cathode conductor 835 connects last LED in three LED unit Assembly 831, the most as shown in the figure (right side) negative pole of three LED component in rightmost side LED group 833.Each LED unit The negative pole of first LED component 831, the positive pole of last LED component 831 and the positive pole of other LED component 831 And negative pole then connects through connection wire 839.

In other words, the positive pole of three LED component 831 of leftmost side LED group 833 is connected to each other through positive wire 834, Its negative pole connects wire 839 through the leftmost side and is connected to each other.The positive pole of three LED component 831 of the second from left LED group 833 passes through The leftmost side connects wire 839 and is connected to each other, and its negative pole is connected to each other through the connection wire 839 of the second from left.Due to leftmost side LED The positive pole of the negative pole of three LED component 831 of group 833 and three LED component 831 of the second from left LED group 833 is all through the most left Side connects wire 839 and is connected to each other, therefore the negative pole of the first of each LED unit LED component and second LED component Positive pole is connected to each other.The rest may be inferred thus forms netted connection as shown in Figure 28 B.

It should be noted that connect in wire 839 with the width 836 of the positive pole coupling part of LED component 831 less than and LED The width 837 of the negative polarity connecting portion of assembly 831.Make the area area more than positive pole coupling part of negative polarity connecting portion.Separately Outward, width 837 is less than connecting the positive pole and another being simultaneously connected with in neighbouring two LED component 831 one of them in wire 839 The width 838 of part of negative pole, make simultaneously with the area of positive pole and cathode portion more than only with the area of negative polarity connecting portion and The area of positive pole coupling part.Therefore, such cabling framework contributes to the heat radiation of LED component.

It addition, positive wire 834 also can include positive wire 834a, cathode conductor 835 also can include negative wire 835a, The two ends making LED module are respectively provided with positive pole and negative pole junction point.Such cabling framework can make other of the power supply module of LED Circuit, such as: filter circuit the 520, first rectification circuit 510 and the second rectification circuit 540 are by either end or simultaneously two ends Positive pole and negative pole junction point are couple to LED module, increase the elasticity that the configuration of side circuit arranges.

Refer to Figure 28 D, for the cabling schematic diagram of the LED module according to this utility model the second preferred embodiment.The present embodiment The annexation of LED component 931 with shown in Figure 28 A, comprise 7 LED at this with three LED unit and each LED unit Illustrate as a example by assembly.Positive wire 934 receives with cathode conductor 935 and drives signal, to provide electrical power to each LED component 931, for example: positive wire 934 couples the first filtering output end 521 of aforementioned filter circuit 520, cathode conductor 935 Couple the second filtering output end 522 of aforementioned filter circuit 520, with signal after accepting filter.For convenience of description, will be every in figure In one LED unit, seven LED component are divided into same LED group 932.

Positive wire 934 connects (left side) positive pole of first (leftmost side) LED component 931 in each LED group 932.Negative pole Wire 935 connects (right side) negative pole of last (rightmost side) LED component 931 in each LED group 932.At each LED In group 932, in neighbouring two LED component 931, the negative pole of the LED component 931 of left connects right through connecting wire 939 The positive pole of LED component 931.Thereby, the LED component of LED group 932 is connected into a string.

It should be noted that connect wire 939 in order to connect the negative pole of one of them of two adjacent LEDs assembly 931 and another Positive pole.Cathode conductor 935 is in order to connect the negative pole of the LED component 931 of last (rightmost side) of each LED group.Positive pole Wire 934 is in order to connect the positive pole of the LED component 931 of first (leftmost side) of each LED group.Therefore, its width and confession LED The area of dissipation of assembly is according to said sequence from large to small.It is to say, the width 938 connecting wire 939 is maximum, cathode conductor 935 width 937 connecting LED component 931 negative pole take second place, and positive wire 934 connects the width of LED component 931 positive pole 936 is minimum.Therefore, such cabling framework contributes to the heat radiation of LED component.

It addition, positive wire 934 also can include positive wire 934a, cathode conductor 935 also can include negative wire 935a, The two ends making LED module are respectively provided with positive pole and negative pole junction point.Such cabling framework can make other of the power supply module of LED Circuit, such as: filter circuit the 520, first rectification circuit 510 and the second rectification circuit 540 are by either end or simultaneously two ends Positive pole and negative pole junction point are couple to LED module, increase the elasticity that the configuration of side circuit arranges.

Furthermore, the cabling shown in Figure 28 C and 28D can realize with flexible circuit board.For example, flexible circuit board There is monolayer line layer, formed with etching mode the positive wire 834 in Figure 28 C, positive wire 834a, cathode conductor 835, Negative wire 835a and connect the positive wire 934 in wire 839, and Figure 28 D, positive wire 934a, cathode conductor 935, Negative wire 935a and connection wire 939.

Refer to Figure 28 E, for the cabling schematic diagram of the LED module according to this utility model the 3rd preferred embodiment.The present embodiment It is to be changed the cabling of the LED module of Figure 28 C into double-deck line layer by monolayer line layer, mainly by positive wire 834a and negative pole Lead-in wire 835a is changed to second layer line layer.It is described as follows.

The most referring also to Figure 23, flexible circuit board has double-deck line layer, including a first line layer 2a, dielectric layer 2b and Second line layer 2c.Electrically isolate with dielectric layer 2b between first line layer 2a and the second line layer 2c.Bendable circuit The first line layer 2a of plate forms the positive wire 834 in Figure 28 E, cathode conductor 835 and connects wire 839 with etching mode, To electrically connect the plurality of LED component 831, such as: electrically connect the plurality of LED component and reticulate connection, the second line layer 2c is with etching mode positive wire 834a, negative wire 835a, to electrically connect described filter circuit (filtering output end).And And at the positive wire 834 of first line layer 2a, the cathode conductor 835 of flexible circuit board, there is layer junction point 834b and 835b. The positive wire 834a of the second line layer 2, negative wire 835a have layer junction point 834c and 835c.Layer junction point 834b And 835b is relative with layer junction point 834c and 835c position, it is for electrically connecting to positive wire 834 and positive wire 834a, And cathode conductor 835 and negative wire 835a.Preferably do the genealogy of law by layer junction point 834b and 835b of ground floor line layer Position with lower dielectric layer formed opening to exposing layer junction point 834c and 835c, then with scolding tin weld, make positive pole lead Line 834 and positive wire 834a, and cathode conductor 835 and negative wire 835a be 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 Figure 28 D Two sandwich circuit layers, and form the Wiring structure of double-deck line layer.

It should be noted that the thickness of the second conductive layer of the flexible circuit board with bilayer conductive layer or line layer is preferably phase Thick compared with the thickness of the first conductive layer, the line loss (pressure drop) on positive wire and negative wire can be reduced.Furthermore, have double The flexible circuit board of layer conductive layer is compared to the flexible circuit board of single conductive layer, due to by the positive wire at two ends, negative pole Lead-in wire moves to the second layer, can reduce the width of flexible circuit board.On identical tool, the discharge quantity of narrower substrate More than wider substrate, the production efficiency of LED module therefore can be improved.And there is the flexible circuit board of bilayer conductive layer It is relatively easy on relatively maintain shape, to increase the reliability produced, such as: during the welding of LED component, welding position is accurate Property.

As the deformation of such scheme, this utility model also provides for a kind of LED straight lamp, the power supply module of this LED straight lamp At least partly electronic building brick is arranged on lamp plate: i.e. utilize PEC (printed electronic circuit, PEC:Printed Electronic Circuits), technology by least part of electronic building brick printing or is embedded on lamp plate.

In an embodiment of the present utility model, the electronic building brick of power supply module is provided entirely on lamp plate.Its manufacturing process is such as Under: substrate prepares (flexible printed circuit preparation) → spray printing metal nano ink → spray printing passive block/active device (electricity Source component) → drying/sintering → spray printing interlayer connection projection → spray insulation ink → spray printing metal nano ink → passive group of spray printing Part and active device (the like form the multi-layer sheet comprised) → sprayed surface welded disc → spraying solder resist welds LED group Part.

In above-mentioned the present embodiment, if the electronic building brick of power supply module is provided entirely on lamp plate, only need to be at the two ends of lamp plate The pin of LED straight lamp is connected, it is achieved pin and the electrical connection of lamp plate by welding lead.Need not be thus power supply group again Part arranges substrate, and then can further optimize the design of lamp holder.It is also preferred that the left power supply module is arranged on the two ends of lamp plate, so Reduce the heat impact on LED component that its work produces as far as possible.The present embodiment, because reducing welding, improves the overall letter of power supply module Lai Xing.

If part electronic building brick is printed on lamp plate (such as resistance, electric capacity), and by big device such as: inductance, electrolysis electricity The electronic building bricks such as appearance are arranged in lamp holder.The manufacturing process of lamp plate is ibid.So by by part electronic building brick, being arranged on lamp plate On, rational layout power supply module, optimize the design of lamp holder.

As above-mentioned scheme deformation, it is possible to realize being arranged on lamp plate the electronic building brick of power supply module by the way of embedding. That is: in the way of embedding, on pliability lamp plate, embed electronic building brick.Copper Foil is covered containing resistor-type/capacitor type it is also preferred that the left can use The methods such as the ink that plate (CCL) or silk screen printing are correlated with realize；Or use inkjet technology to realize the method embedding passive block, I.e. using ink-jet printer directly the position set in as the electrically conductive ink of passive block and correlation function ink jet-printing to lamp plate On.As the deformation of such scheme, passive block can also ink-jet printer directly using as the electrically conductive ink of passive block and phase Close function ink jet-printing to lamp plate).Then, through UV optical processing or drying/sintering processes, the lamp of potting passive block is formed Plate.It is embedded in electronic building brick on lamp plate and includes resistance, electric capacity and inductance；In other embodiments, active block is also suitable. Carry out rational layout power supply module by such design and then reach to optimize the design of lamp holder (owing to part uses embedded resistance And electric capacity, the present embodiment has been saved the printed circuit board surface space of preciousness, has been reduced the size of printed circuit board (PCB) and decrease it Weight and thickness.Simultaneously because eliminate these resistance and electric capacity pad (pad be easiest on printed circuit board (PCB) introduce therefore The part of barrier), the reliability of power supply module have also been obtained raising.The length of printed circuit board (PCB) upper conductor will be shortened and allow simultaneously Greater compactness of device layout, thus improve electric property).

Following description embedded capacitance, the manufacture method of resistance.

The method generally using embedded capacitance, uses a kind of concept being called distributed electrical perhaps plane capacitance.Base in layers of copper The thinnest insulating barrier is pressed on plinth.Typically occur in pairs with the form on bus plane/stratum.The thinnest insulating barrier make bus plane with Distance between stratum is the least.Such capacitance can also be realized by traditional plated through-hole.Basically, so Method establish a big parallel plate capacitance on circuit boards.

The product of some high-capacitances, some is distributed capacitor type, and other is discrete Embedded.By in insulation Fill Barium metatitanate. (a kind of material with high-k) in Ceng and obtain higher capacitance.

The method being typically manufactured embedded resistance is to use resistance stick.It is the resin doped with conductivity carbon or graphite, with this For filler, it is screen printed onto at appointment, is laminated into inside circuit board after being then passed through processing.Resistance is by plated through-hole or micro-mistake Other electronic building bricks that hole is connected on circuit board.Another kind of method is Ohmega-Ply method: it is double-metal layer structure copper The layer nickel alloy layer thin with one constitutes resistive element, and they form the resistance relative to bottom of stratiform.Then by copper Layer and the etching of nickel alloy layer, form the various nickel resistance with copper tip.These resistance are laminated in the internal layer of circuit board.

In an embodiment of the present utility model, wire is directly printed on the inwall (being arranged to wire) of glass tubing, LED group Part is directly against this inwall, to be electrically connected to each other through these wires.It is also preferred that the left use LED component chip form directly against The wire of this inwall (arranges junction point at the two ends of wire, be connected with power supply module by junction point LED component), attaches After, drop fluorescent material (producing white light when making LED straight lamp work, it is possible to be the light of other color) on this chip.

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

Refer to Figure 29 A, for the circuit box schematic diagram of the LED according to this utility model the 3rd preferred embodiment.This enforcement The power supply module of the LED of example comprises the first rectification circuit 510 and the second rectification circuit 540, filter circuit 520, LED driving Module 530, and LED drive module 530 further includes drive circuit 1530 and LED module 630.Drive circuit 1530 is direct current To-DC switching circuit, couples the first filtering output end 521 and the second filtering output end 522, with signal after accepting filter, and Carry out electric power conversion with filtered signal is converted into driving signal and in the first drive output 1521 and the second drive output 1522 outputs.LED module 630 couples the first drive output 1521 and the second drive output 1522, drives letter to receive Number and luminous, the preferably current stabilization of LED module 630 sets current value (in order to there being LED stable, that less flash in one Light；And be beneficial to control current value).LED module 630 can be found in the explanation of Figure 28 A to Figure 28 D.

It should be noted that the second rectification circuit 540 can omit for inessential assembly, therefore be represented by dotted lines in the drawings.The most just Being to say, the LED drive module 530 in the embodiment shown in Figure 24 A and Figure 24 C can further include drive circuit 1530 and LED mould Block 630.Therefore, the power supply module of the LED of the present embodiment also can be applied to single ended power supply, the applied environment of Double-End Source, Such as: bulb lamp, PAL lamp etc. are the most applicable.

Refer to Figure 29 B, for the circuit box schematic diagram of the drive circuit according to this utility model the first preferred embodiment.Drive Circuit comprises controller 1531 and change-over circuit 1532, carries out electric power conversion with the pattern of current source, to drive LED module to send out Light.Change-over circuit 1532 comprises on-off circuit 1535 and accumulator 1538.It is defeated that change-over circuit 1532 couples the first filtering Go out end 521 and the second filtering output end 522, signal after accepting filter, and according to the control of controller 1531, be converted into driving Signal and exported by the first drive output 1521 and the second drive output 1522, to drive LED module.At controller 1531 Control under, the driving signal that change-over circuit 1532 is exported is stabling current, and makes LED module stabilized illumination.

Refer to Figure 29 C, for the circuit diagram of the drive circuit according to this utility model the first preferred embodiment.In this enforcement Example, drive circuit 1630 is decompression DC to-DC switching circuit, comprises controller 1631 and change-over circuit, and change-over circuit Comprise inductance 1632, fly-wheel diode 1633, electric capacity 1634 and switching switch 1635.Drive circuit 1630 couples first Filtering output end 521 and the second filtering output end 522, to be converted into driving signal by the filtered signal of reception, to drive coupling It is connected on the LED module between the first drive output 1521 and the second drive output 1522.

In the present embodiment, switching switch 1635 is metal-oxide half field effect transistor, has control end, the first end and the second end.Cut The first end changing switch 1635 couples the positive pole of fly-wheel diode 1633, and the second end couples the second filtering output end 522, controls End couples controller 1631 to be made between the first end and the second end as on or off with the control accepting controller 1631.First drives Dynamic outfan 1521 couples the first filtering output end 521, and the second drive output 1522 couples one end of inductance 1632, and electric The other end of sense 1632 couples the first end of switching switch 1635.Electric capacity 1634 be coupled to the first drive output 1521 and Between second drive output 1522, to stablize the voltage between the first drive output 1521 and the second drive output 1522 Difference.The negative terminal of fly-wheel diode 1633 couples the first drive output 1521.

Next the running of drive circuit 1630 is described.

Controller 1631 determines conducting and the deadline of switching switch 1635 according to current sense signal S535 and/or S531, The dutycycle (Duty Cycle) namely controlling switching switch 1635 regulates the size driving signal.Current sense signal S535 System represents the size of current flowing through switching switch 1635.The representative of current sense signal S535 system flows through and is coupled to the first driving output The size of current of the LED module between end 1521 and the second drive output 1522.According to current sense signal S531 and S535 Arbitrary, controller 1631 can obtain the information of the electric power size that change-over circuit is changed.When switching switch 1635 conducting, The electric current of filtered signal is flowed into by the first filtering output end 521, and arrives through electric capacity 1634 and the first drive output 1521 Flowed out by the second filtering output end 522 after LED module, inductance 1632, switching switch 1635.Now, electric capacity 1634 and electricity Sense 1632 carries out energy storage.When switching switch 1635 cut-off, inductance 1632 and electric capacity 1634 discharge stored energy, electricity Flow through fly-wheel diode 1633 afterflow and make LED module still continuous illumination to the first drive output 1521.

It should be noted that the inessential assembly of electric capacity 1634 can omit, therefore be represented by dotted lines in the drawings.Ring is applied at some Border, can reach the effect of stable LED module electric current by the characteristic of the change of inductance meeting resistive and omit electric capacity 1634.

Refer to Figure 29 D, for the circuit diagram of the drive circuit according to this utility model the second preferred embodiment.In this enforcement Example, drive circuit 1730 is voltage boosting dc to-DC switching circuit, comprises controller 1731 and change-over circuit, and change-over circuit Comprise inductance 1732, fly-wheel diode 1733, electric capacity 1734 and switching switch 1735.Drive circuit 1730 will be by first The filtered signal that filtering output end 521 and the second filtering output end 522 are received is converted into driving signal, is coupled in drive LED module between first drive output 1521 and the second drive output 1522.

One end of inductance 1732 couples the first filtering output end 521, and the other end couples positive pole and the switching of filter stream diode 1733 First end of switch 1735.Second end of switching switch 1735 couples the second filtering output end 522 and the second drive output 1522.The negative pole of fly-wheel diode 1733 couples the first drive output 1521.Electric capacity 1734 is coupled to the first drive output 1521 and second between drive output 1522.

Controller 1731 couples the control end of switching switch 1735, according to current sense signal S531 and/or current sense signal S535 controls conducting and the cut-off of switching switch 1735.When switching switch 1735 conducting, electric current is by the first filtering output end 521 flow into, and flow through inductance 1732, switching switch 1735 after flowed out by the second filtering output end 522.Now, inductance is flowed through The electric current of 1732 increases in time, and inductance 1732 is in energy storage state.Meanwhile, electric capacity 1734 is in de-energized state, to continue Driving LED module is luminous.When switching switch 1735 cut-off time, inductance 1732 is in de-energized state, the electric current of inductance 1732 with Time reduces.The electric current of inductance 1732 flows to electric capacity 1734 and LED module through fly-wheel diode 1733 afterflow.Now, electricity Hold 1734 and be in energy storage state.

It should be noted that electric capacity 1734, for omissible assembly, is represented by dotted lines.In the situation that electric capacity 1734 omits, cut When changing switch 1735 conducting, the electric current of inductance 1732 is not passed through LED module and makes LED module the most luminous；Switching switch 1735 During cut-off, the electric current of inductance 1732 flows through LED module through fly-wheel diode 1733 and makes LED module luminous.By controlling LED The fluorescent lifetime of module and the size of current flowed through, the mean flow rate that can reach LED module is stable in setting value, and reaches The effect of identical stabilized illumination.

Refer to Figure 29 E, for the circuit diagram of the drive circuit according to this utility model the 3rd preferred embodiment.In this enforcement Example, drive circuit 1830 is decompression DC to-DC switching circuit, comprises controller 1831 and change-over circuit, and change-over circuit Comprise inductance 1832, fly-wheel diode 1833, electric capacity 1834 and switching switch 1835.Drive circuit 1830 couples first Filtering output end 521 and the second filtering output end 522, to be converted into driving signal by the filtered signal of reception, to drive coupling It is connected on the LED module between the first drive output 1521 and the second drive output 1522.

First end of switching switch 1835 couples the first filtering output end 521, and the second end couples the negative pole of fly-wheel diode 1833, And control end and couple controller 1831 and make the state between the first end and the second end be to receive the control signal of controller 1831 On or off.The positive pole of fly-wheel diode 1833 couples the second filtering output end 522.One end of inductance 1832 is opened with switching Second end of pass 1835 couples, and the other end couples the first drive output 1521.Second drive output 1522 couples afterflow two The positive pole of pole pipe 1833.Electric capacity 1834 is coupled between the first drive output 1521 and the second drive output 1522, with Stablize the voltage between the first drive output 1521 and the second drive output 1522.

Controller 1831 controls leading of switching switch 1835 according to current sense signal S531 and/or current sense signal S535 Lead to and cut-off.When switching switch 1835 conducting time, electric current is flowed into by the first filtering output end 521, and flow through switching switch 1835, Flowed out by the second filtering output end 522 after inductance the 1832, first drive output 1521 and the second drive output 1522.This Time, the voltage of the electric current and electric capacity 1834 that flow through inductance 1832 increases in time, and inductance 1832 and electric capacity 1834 are in storage Can state.When switching switch 1835 cut-off, inductance 1832 is in de-energized state, and the electric current of inductance 1832 reduces in time. Now, the electric current of inductance 1832 is through the first drive output 1521 and the second drive output 1522, fly-wheel diode 1833 Return inductance 1832 and form afterflow.

It should be noted that electric capacity 1834 for assembly can be omitted, graphic in be represented by dotted lines.When electric capacity 1834 omits, no Opinion switching switch 1835 is on or off, and the electric current of inductance 1832 all can flow through the first drive output 1521 and second and drive Dynamic outfan 1522 is to drive LED module continuous illumination.

Refer to Figure 29 F, for the circuit diagram of the drive circuit according to this utility model the 4th preferred embodiment.In this enforcement Example, drive circuit 1930 is decompression DC to-DC switching circuit, comprises controller 1931 and change-over circuit, and change-over circuit Comprise inductance 1932, fly-wheel diode 1933, electric capacity 1934 and switching switch 1935.Drive circuit 1930 couples first Filtering output end 521 and the second filtering output end 522, to be converted into driving signal by the filtered signal of reception, to drive coupling It is connected on the LED module between the first drive output 1521 and the second drive output 1522.

One end of inductance 1932 couples the first filtering output end 521 and the second drive output 1522, and the other end couples switching and opens Close first end of 1935.Second end of switching switch 1935 couples the second filtering output end 522, and controls end and couple controller 1931 with the control signal according to controller 1931 as on or off.The positive pole of fly-wheel diode 1933 couples inductance 1932 With the junction point of switching switch 1935, negative pole couples the first drive output 1521.Electric capacity 1934 couples the first drive output 1521 and second drive output 1522, be stably coupled to the first drive output 1521 and the second drive output 1522 it Between the driving of LED module.

Controller 1931 controls leading of switching switch 1935 according to current sense signal S531 and/or current sense signal S535 Lead to and cut-off.When switching switch 1935 conducting time, electric current is flowed into by the first filtering output end 521, and flow through inductance 1932, Flowed out by the second filtering output end 522 after switching switch 1935.Now, the electric current flowing through inductance 1932 increases in time, electricity Sense 1932 is in energy storage state；The voltage of electric capacity 1934 reduces in time, and electric capacity 1934 is in de-energized state, to maintain LED Module is luminous.When switching switch 1935 cut-off, inductance 1932 is in de-energized state, and the electric current of inductance 1932 reduces in time. Now, the electric current of inductance 1932 is through fly-wheel diode the 1933, first drive output 1521 and the second drive output 1522 Return inductance 1932 and form afterflow.Now, electric capacity 1934 is in energy storage state, and the voltage of electric capacity 1934 increases in time.

It should be noted that electric capacity 1934 for assembly can be omitted, graphic in be represented by dotted lines.When electric capacity 1934 omits, cut When changing switch 1935 conducting, the electric current of inductance 1932 is not flow through the first drive output 1521 and the second drive output 1522 And make LED module the most luminous.During switching switch 1935 cut-off, the electric current of inductance 1932 flows through through fly-wheel diode 1933 LED module and make LED module luminous.By the fluorescent lifetime controlling LED module and the size of current flowed through, LED can be reached The mean flow rate of module is stable in setting value, and reaches the effect of identical stabilized illumination.

Refer to Figure 29 G, for the circuit box schematic diagram of the drive circuit according to this utility model the second preferred embodiment.Drive Circuit comprises controller 2631 and change-over circuit 2632, carries out electric power conversion with the pattern of adjustable current source, to drive LED mould Block is luminous.Change-over circuit 2632 comprises on-off circuit 2635 and accumulator 2638.Change-over circuit 2632 couples the first filter Wave output terminal 521 and the second filtering output end 522, signal after accepting filter, and according to the control of controller 2631, be converted into Signal is driven to be exported by the first drive output 1521 and the second drive output 1522, to drive LED module.Controller 2631 receive current sense signal S535 and/or S539, control the driving signal stabilization of change-over circuit 2632 output in setting electricity In flow valuve.Wherein, the size of current of current sense signal S535 representation switch circuit 2635；Current sense signal S539 represents The size of current of accumulator 2638, such as: the inductive current in accumulator 2638, the first drive output 1521 institute is defeated The electric current etc. gone out.Arbitrary drive circuit that all can represent of current sense signal S535 and S539 is by the first drive output 1521 And second drive output 1522 be supplied to the size of electric current Iout of LED module.It is defeated that controller 2631 more couples the first filtering Go out end 521, determine to set the size of current value with the voltage Vin according to the first filtering output end 521.Therefore, drive circuit Electric current Iout, i.e. set current value, can adjust according to the size of the voltage Vin of the filtered signal that filter circuit is exported.

It should be noted that above-mentioned current sense signal S535 and S539 generation can in the way of being to utilize resistance or inductance amount Survey.For example, flow through resistance according to electric current and the pressure reduction that produces in resistance two ends, or utilize mutual inductance inductance and accumulator Inductance mutual inductance in 2638 etc. all can be in order to detecting current.

Above-mentioned circuit framework, is particularly suited for the applied environment that lamp tube drive circuit is electric ballast.Electric ballast equivalence Upper is current source, and its output is not definite value.And the drive circuit as shown in Figure 29 C to Figure 29 F, its power consumption Relevant with the LED component quantity of LED module, can be considered definite value.When the output of electric ballast is driven higher than drive circuit During the power consumption of dynamic LED module, the output voltage of electric ballast can improve constantly, namely the power supply module of LED The level of the alternating current drive signal received can constantly rise and cause having more than the power supply module of electric ballast and/or LED Assembly is pressure and the risk damaged.Consumption when the LED module that the output of electric ballast is driven less than drive circuit During power, the output voltage of electric ballast can constantly reduce, and namely the level of alternating current drive signal can constantly decline and cause Circuit cannot normal operating.

It should be noted that the power needed for LED illumination is already less than the power needed for the fluorescent lightings such as daylight lamp.If making Control the control mechanism of LED luminance with conventional backlight module etc., be applied to traditional drive systems such as electric ballast, will necessarily Suffer from the power incompatibility problem that cause different from the power demand of LED of drive system.Even result in drive system or/ And the problem that LED is damaged.Example adjusts with above-mentioned power so that LED is more compatible with traditional fluorescent lamp lighting system.

Refer to Figure 29 H, for district's line relation signal of the voltage Vin according to this utility model one preferred embodiment and electric current Iout Figure.Wherein, transverse axis is voltage Vin, and the longitudinal axis is electric current Iout.In one embodiment, when filtered signal voltage Vin (i.e. Level) between upper voltage limit value VH and voltage lower limit value VL time, electric current Iout maintains initial setting current value.Work as filter After ripple the voltage Vin of signal higher than upper voltage limit value VH time, electric current Iout (i.e. setting current value) with voltage Vin increase and 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 filter When the voltage Vin of signal is less than voltage lower limit value VL after ripple, sets current value and reduce with the minimizing of voltage Vin.Preferably song The slope of line reduces with voltage Vin and diminishes.It is, when voltage Vin is higher than upper voltage limit value VH or less than voltage lower limit value During VL, electricity sets current value and is preferably the quadratic power of voltage Vin or above functional relationship, and makes the increment rate of power consumption (slip) is higher than the increment rate (slip) of output.That is, the described Tuning function system of current value that sets is as comprising described filter The quadratic power of the level of signal or above function after ripple.

In another embodiment, when the voltage Vin of filtered signal is between upper voltage limit value VH and voltage lower limit value VL, The electric current Iout of LED can be increased or decreased with voltage Vin and linearly increasing or reduce.When voltage Vin is in upper voltage limit value VH Time, electric current Iout is at upper current value IH；As voltage Vin limit value VL under voltage, electric current Iout is at lower current value IL. Wherein, upper current value IH is higher than lower current value IL.It is, when voltage Vin is at upper voltage limit value VH and voltage lower limit value VL Between, electric current Iout is the functional relationship of the first power of voltage Vin.

By above-mentioned design, when the power consumption of the LED module that the output of electric ballast is driven higher than drive circuit Time, voltage Vin can improve in time and exceed upper voltage limit value VH.When voltage Vin is higher than upper voltage limit value VH, LED mould The increment rate of the power consumption of block higher than the increment rate of output of electric ballast, and in voltage Vin be high balanced voltage VH+ And electric current Iout is when being high balanced balanced current IH+, output balances equal to power consumption.Now, high balanced voltage VH+ Higher than upper voltage limit value VH, and high balanced balanced current IH+ is higher than upper current value.Otherwise, when voltage Vin is less than voltage lower limit value VL Time, the slip of the power consumption of LED module is higher than the slip of the output of electric ballast, and is low in voltage Vin When balanced voltage VL-and electric current Iout is low balanced balanced current IL-, output balances equal to power consumption.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, upper voltage limit Value VH is defined as the 110% of maximum output voltage.As a example by full voltage 100-277V AC/60HZ, voltage lower limit value VL is arranged For 90V (100V*90%), upper voltage limit value VH is set to 305V (277V*110%).

Coordinating Figure 19 and Figure 20, short circuit board 253 is distinguished into the first circuit board being connected with long circuit board 251 two ends and the Two circuit boards, illustrate long and short relative concept due to above-mentioned, do not repeat them here, due to described first circuit Plate and second circuit board are included among described short circuit board, therefore for purposes of illustration only, described first circuit board meter all do the below One short circuit board, described second circuit board meter makees the second short circuit board, and the electronic building brick in power supply module is respectively set at The first short circuit board of short circuit board 253 and the second short circuit board on.First short circuit board and the length ruler of the second short circuit board Very little can with rough unanimously, it is also possible to inconsistent.As above-mentioned, preferably described in less lamp holder size is relatively headlight area of bed 30% To 80%.Or can because of that, the first short circuit board (right-hand circuit board of the short circuit board of Figure 19 253 and the short circuit board of Figure 20 The left side circuit board of 253) the length dimension that length dimension is the second short circuit board 30%～80%, that is described first circuit The length dimension of plate can be the 30%～80% of the length dimension of second circuit board.Or, preferably described in the size of less lamp holder be The 1/3～2/3 of relatively headlight area of bed.Or can because of that, the length dimension of the more preferably first short circuit board is the second short circuit board Length dimension 1/3～2/3, that is the length dimension of described first circuit board can be the length dimension of second circuit board 1/3～2/3.In this embodiment, the half of the size of the length dimension substantially second short circuit board of the first short circuit board.Second The size of short circuit board is between 15mm～65mm (concrete depending on application scenario).First short circuit board is arranged at LED straight lamp One end lamp holder in, and the second short circuit board is arranged in the lamp holder of the relative other end of LED straight lamp.

For example, the electric capacity of drive circuit is such as: the electric capacity 1634,1734,1834,1934 in Figure 29 C to Figure 29 F) The electric capacity that can be two or more in actual application is formed in parallel.In power supply module, the electric capacity of drive circuit is at least partially or fully It 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 Switches etc. are the assembly that in electronic building brick, temperature is higher, are arranged on different circuit boards from part or all of electric capacity, can make electric capacity (especially electrochemical capacitor) avoids the assembly because temperature is higher to impact the life-span of electric capacity, improves electric capacity reliability.Such Circuit layout, can make the welding of electronic building brick become easy；Further, the interference of EMI can also be reduced.

The conversion efficiency of drive circuit of the present utility model is more than 80%, preferably more than 90%, more preferably more than 92%.Therefore, When not comprising drive circuit, the luminous efficiency of LED of the present utility model is preferably more than 120lm/W, more preferably 160lm/W Above；And it is preferably more than 120lm/W*90%=108lm/W comprising the luminous efficiency after drive circuit is combined with LED component, It is 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 lamp is more than 85%, therefore, LED straight lamp of the present utility model Luminous efficiency be preferably more than 108lm/W*85%=91.8lm/W, more preferably 147.2lm/W*85%=125.12lm/W.

It should be noted that switching circuit can comprise multiple changeover module, to provide plural switch terminal to be connected in parallel The electric capacity of multiple parallel connections is (such as: the electric capacity 645 and 646 of Figure 26 A, the electric capacity 643,645 and 646 of Figure 26 A, Figure 26 B Electric capacity 743 and 744 and/or 745 and 746, the electric capacity 843 and 844 of Figure 26 C, the electric capacity 845 and 846 of Figure 26 C, figure The electric capacity 842,843 and 844 of 26C, the electric capacity 842,845 and 846 of Figure 26 C, the electric capacity 842 of Figure 26 C, 843,844, 845 and 846) effect of multiple electric capacity bypass equivalence connected, is actually reached with LED straight lamp.

More than Zong He, when multiple light sources 202 are arranged into the string along fluorescent tube length direction, the support 202b of all light sources 202 The second sidewall 16 need to lay respectively on same straight line, i.e. the second sidewall 16 of homonymy is formed and is similar to the structure of a face wall, To stop that the sight line of user is immediately seen light source 202.When multiple light sources 202 are arranged into the multiple row along fluorescent tube length direction, edge Outermost second sidewall 16 of the support 202b of all light sources 202 of outermost two row of fluorescent tube width needs to lay respectively at two On bar straight line, form the structure being similar to two face walls, to stop that the sight line of user is immediately seen light source 202；And for centre String or several row light source 202, the arrangement of its sidewall, extension mode be not required, can be with outermost two row light source 202 phases With, it would however also be possible to employ other different arrangement modes.

This utility model LED straight lamp in the realization of each embodiment with as previously mentioned.Need to point out, implement at each In example, for same LED straight lamp, " lamp plate uses bendable circuit soft board ", " power supply has length circuit The molectron of plate ", etc. in feature, one or more technical characteristic can be only included.

Additionally, wherein content system about " lamp plate use bendable circuit soft board " can be selected from and includes in embodiment that it is correlated with One of them or a combination thereof of technical characteristic.

Such as, in lamp plate uses bendable circuit soft board, pass through between described bendable circuit soft board and the outfan of described power supply Wire routing connects or welds between described bendable circuit soft board and the outfan of described power supply.Additionally, described bendable circuit Soft board includes a dielectric layer and the storehouse of a line layer；Bendable circuit soft board can be at the circuit protection of surface-coated ink material Layer, and the function of reflectance coating is realized by the width increased circumferentially.

Such as, in Power Management Design, the molectron 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 and is fixed through gluing mode, and short circuit board is positioned at long circuit board adjacent peripheral edges.On short circuit board, there is power supply Module, is monolithically fabricated power supply.

At the driving framework of Double-End Source, outside can be received in the way of wherein one end is with as single ended power supply and drives supporting only to use Dynamic signal.

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

In the rectification circuit of power supply module designs, can be that there is single rectification unit, or double rectification unit.Double rectification circuits In the first rectification unit and the second rectification unit pin with the two ends lamp holder being arranged in LED straight lamp respectively couple.Single whole Stream unit is applicable to the driving framework of single ended power supply, and double rectification unit is applicable to the driving framework of single ended power supply and Double-End Source. And when being configured with at least one rectification unit, go for driving of low-frequency ac signal, high frequency ac signal or direct current signal Rotating ring border.

In the pin of LED straight lamp designs, can be that single-ended pair of pin (totally two pins, other end non-connection pin), both-end are each Single pin (totally two pins), the framework of each pair of pin of both-end (totally four pins).At each single pin of single-ended pair of pin and both-end Under framework, it is applicable to the rectification circuit design of single rectification circuit.Under the framework of each pair of pin of both-end, it is applicable to double whole The rectification circuit design of current circuit, and use each arbitrary pin of both-end or arbitrary single-ended double pins to receive external drive signal.

Furthermore it is possible to additionally increase protection circuit to protect LED module.Protection circuit can detect LED module electric current or/ And voltage carrys out corresponding the crossing of corresponding startup and flows or overvoltage protection.

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

In the LED module of power supply module designs, LED module can comprise multi-string LED assembly (that is, the single LED being connected in parallel to each other Chip, or the LED group of multiple LED modules with different colors chip composition) string, the LED component in each LED component string can be connected to each other And form netted connection.

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

Claims (8)

1. a LED straight lamp, including:

One fluorescent tube；

One first pin and one second pin, all couple described fluorescent tube, in order to receive an external drive signal；

One first rectification circuit, couples described first pin and described second pin, in order to drive described outside Dynamic signal carries out rectification, to produce a rectified signal；

One filter circuit, couples with described first rectification circuit, and it is defeated that described filter circuit has one first filtering Go out end and one second filtering output end, and in order to described rectified signal is filtered, to produce a filtering Rear signal；And

One LED drive module, couples with described filter circuit, and described LED drive module comprises a driving electricity Road and a LED module；Described drive circuit has one first drive output and one second drive output, And it is configured to receive described filtered signal and output one driving signal；And described LED module couples described Drive circuit, and in order to receive described driving signal and luminous；

Wherein said drive circuit includes a controller and a change-over circuit；Described change-over circuit is configured to Receive described filtered signal, then described filtered signal be converted into described driving signal with described in driving LED module is luminous；And described controller is for controlling described change-over circuit according to a current sense signal, in order to according in institute The voltage stating the first filtering output end or described second filtering output end sets the size of described driving signal.

LED straight lamp the most according to claim 1, it is characterised in that

Described change-over circuit comprises

One on-off circuit and an accumulator,

Described on-off circuit comprises

One switching switch,

And described accumulator comprises

One inducer and a fly-wheel diode,

One first end of wherein said switching switch couples the positive pole of described fly-wheel diode, and one second end couples described second filtering output End, one control end couple described controller with accept described controller control make between described first end and the second end for turn on or Cut-off；

Described first drive output couples described first filtering output end,

Described second drive output couples one end of described inducer, and the other end of described inducer couples the described of described switching switch First end；The negative terminal of described fly-wheel diode couples described first drive output.

LED straight lamp the most according to claim 1, it is characterised in that described change-over circuit comprises

One on-off circuit and an accumulator,

Described on-off circuit comprises a switching switch,

Described accumulator comprises an inducer and a fly-wheel diode,

One end of wherein said inducer couples described first filtering output end, and the other end couples the positive pole of described fly-wheel diode and described One first end of switching switch, one second end of described switching switch couples described second filtering output end and the second drive output； The negative pole of described fly-wheel diode couples described first drive output；And described controller couples a control of described switching switch End processed, and it is arranged to control conducting and the cut-off of described switching switch.

LED straight lamp the most according to claim 1, it is characterised in that

Described change-over circuit comprises an on-off circuit and an accumulator,

Described on-off circuit comprises a switching switch,

Described accumulator comprises an inducer and a fly-wheel diode,

One first end of wherein said switching switch couples described first filtering output end,

One second end couples the negative pole of described fly-wheel diode, and a control end couples described controller to receive the control of described controller Making the state between described first end and the second end is on or off；

The positive pole of described fly-wheel diode couples described second filtering output end；

One end of described inducer couples described second end of described switching switch, and the other end couples described first drive output；And institute State the second drive output and couple the positive pole of described fly-wheel diode.

LED straight lamp the most according to claim 1, it is characterised in that

Described change-over circuit comprises

One on-off circuit and an accumulator,

Described on-off circuit comprises a switching switch,

And described accumulator comprises an inducer and a fly-wheel diode,

Wherein, one end of described inducer couples described first filtering output end and the second drive output, and the other end couples described switching One first end of switch,

One second end of described switching switch couples described second filtering output end, and a control end couples described controller with described in reception The control of controller and be on or off；

The positive pole of described fly-wheel diode couples a junction point of described inducer and described switching switch, and negative pole couples described first and drives Outfan.

6. according to claim 2, arbitrary described LED straight lamp in 3,4 or 5, it is characterised in that

Described accumulator also comprises

One capacitor, is coupled between described first drive output and the second drive output, in order to stably described Voltage difference between first drive output and the second drive output.

7. according to claim 2, arbitrary described LED straight lamp in 3,4 or 5, it is characterised in that

Described controller be suitable for use in switch according to described current sense signal deciding the conducting of switch and deadline, Or described switching switch dutycycle, to regulate described driving signal, wherein said current sense signal is opened for flowing through described switching Close or flow through an electric current of the described LED module being coupled between described first drive output and the second drive output.

LED straight lamp the most according to claim 1, it is characterised in that

Described change-over circuit couples described first filtering output end and the second filtering output end, and comprises an on-off circuit and Accumulator,

Described on-off circuit comprises a switching switch, and wherein said current sense signal is for flowing through described on-off circuit or described storage One electric current of energy circuit.