CN205979249U

CN205979249U - Light -emitting diode (LED) daylight lamp

Info

Publication number: CN205979249U
Application number: CN201620781193.3U
Authority: CN
Inventors: 熊爱明; 刘新通; 吴晓佳; 陈俊仁
Original assignee: Jiaxing Super Lighting Electric Appliance Co Ltd
Current assignee: Jiaxing Super Lighting Electric Appliance Co Ltd
Priority date: 2015-08-08
Filing date: 2016-07-21
Publication date: 2017-02-22
Anticipated expiration: 2026-07-21
Also published as: CN205979250U; CN106439539A; CN106468406A

Abstract

The application discloses a light -emitting diode (LED) daylight lamp includes: rectifier unit, rectifier unit electric connection set up in the pin of light -emitting diode (LED) daylight lamp tip to the alternating current rectification that will be coupled the ballast output of this pin becomes the direct current, the LED module, LED module electric connection rectifier unit, the LED module include at least one LED component and with the parallelly connected first electric capacity of at least one LED component, first electric capacity is used for stationary flow and filtering, the inductance, it can restrain the sudden change of LED module return circuit intermediate -current.

Description

LED daylight lamp

Technical field

The application is related to field of lighting appliances, more particularly, to a kind of LED daylight lamp.

Background technology

Because conventional fluorescent fluorescent tube has applied decades, every country and manufacturer have been developed that various principles, rule It is necessary to solve LED daylight lamp to electronic ballast during the ballast of lattice, therefore LED daylight lamp substitute conventional fluorescent Device and the compatibling problem of Inductive ballast.

There are a lot of problems on compatible with electric ballast and Inductive ballast in the LED daylight lamp using at present, On Inductive ballast can normal work, but be possible to cause LED daylight lamp fluorescent tube flicker, dimmed, very on electric ballast To burning, need the LED daylight lamp fluorescent tube power supplys different for different ballast exploitations, thus substantially increase LED daylight lamp substitutes the cost of conventional fluorescent (T8).

Reaching its maturity with LED technology, LED daylight lamp (Light-Emitting Diode, LED) have high brightness, The advantages of power saving and environmental protection, is widely accepted.LED daylight lamp is also little by little applied in various illuminator.To great majority For user, it does not know existing ballast why type.Bring when buying LED daylight lamp and greatly puzzle.

Therefore, in the urgent need to the compatible electric ballast of LED daylight lamp and Inductive ballast, to meet the demand of user, Simultaneously because not needing separate design LED daylight lamp compatible electronic ballast or Inductive ballast so that the platform of design is unified Change, save substantial amounts of design resource, improve exploitation reply efficiency.

The electric ballast of market is generally divided into 2 classes at present：

One is that (T-LED lamp is DR (Direct Replacement) type lamp to ballast compatible type light-emitting diode lamp tube Pipe), on the basis of the circuit not changing original illuminator, directly replace traditional fluorescent lamp with light-emitting diode lamp tube Pipe.

Another for ballast bypass type (Ballast by-pass is BP type fluorescent tube) light-emitting diode lamp tube, circuit saves Traditional ballast, and directly civil power is connected to light-emitting diode lamp tube.The latter is applied to newly-decorated environment, using new photograph The drive circuit of bright device and light-emitting diode lamp tube.

At present on the market the electric ballast of some signals due to its parts selection difference, some part electric ballasts When with LED daylight lamp fit applications (during LED daylight lamp work, impedance is in non-linear), the high frequency electric exporting during its work Substantially once cyclically-varying (the frequency human ear of property change in this week is more sensitive, can hear the noise that this curent change causes).

Utility model content

In view of the deficiencies in the prior art, the application provides a kind of LED daylight lamp, can reduce making an uproar of electric ballast Sound.

For reaching above-mentioned purpose, the application provides a kind of LED daylight lamp, including：

Rectification unit, described rectification unit is electrically connected with the pin being arranged at described LED daylight lamp end, will couple this The AC rectification of the ballast output of pin becomes unidirectional current；

LED module, described LED module is electrically connected with described rectification unit；Described LED module includes at least one LED unit Part constitute branch road and

Inductance, it can suppress the current break in described LED module loop.

Preferably, described LED module also includes the first electricity with the branch circuit parallel connection of at least one LED element described composition Hold；Described first electric capacity is used for current stabilization and filtering.

Preferably, in described LED module, described inductance is constituted described inductance with least one LED element described Branch road is connected.

Preferably, the inductance value of described inductance is 1mH to 10mH.

Preferably, described inductance in parallel has diode (635), the branch road that described diode is constituted with described LED element Opposite polarity, for described inductance afterflow.

Preferably, described LED module also includes：

Overflowing suppression circuit；Described overflowing suppression circuit includes audion (638), first resistor (636), second resistance (637)；The base stage of described audion (638) and colelctor electrode are connected respectively to the two ends of described inductance (635), described audion (638) colelctor electrode is connected to the cathode terminal of described LED element (632), in base stage and the inter-collector of described audion (638) And base stage is respectively equipped with described first resistor (636), second resistance (637) with transmitting interpolar, the sending out of described audion (638) Emitter-base bandgap grading is connected to the built-in MOSFET drain electrode end (DRN end) of the IC module (2591) of described LED daylight lamp.

Preferably, described rectification unit, described inductance and described overflowing suppression circuit are arranged at the lamp of described LED daylight lamp In head；At least one LED element described and described first electric capacity are arranged on the lamp plate of described LED daylight lamp.

Preferably, also include：

It is coupled to the simulation heater chain between described pin and described rectification unit；Described simulation heater chain is used for Warm-up phase supplies the alternating current of ballast output through to simulate filament.

Preferably, described inductance is coupled between described simulation heater chain and described rectification unit.

Preferably, described simulation heater chain has two, and described rectification unit has two；Described two simulation filament electricity Road is coupled with the pin at described LED daylight lamp two end and described two rectification units respectively.

Preferably, described inductance include the first inductance (3631), the second inductance (3632), the 3rd inductance (3633), the 4th Inductance (3634)；

It is provided with, between described rectification unit simulation described with heater chain, the first inductance (3631) connected And second inductance (3632)；Another described rectification unit be provided between analog circuit another described connect the 3rd electricity Sense (3633) and the 4th inductance (3634)；

Described first inductance in parallel has first diode (3635) with afterflow effect, and described second inductance in parallel has tool There is second diode (3636) of afterflow effect, described 3rd inductance in parallel has the 3rd diode with afterflow effect (3637), described 4th inductance in parallel has the 4th diode (3638) with afterflow effect；Described first diode (3635) Opposite polarity with described second diode (3636)；Described 3rd diode (3637) and described 4th diode (3638) Opposite polarity.

Preferably, described first inductance, the second inductance, the 3rd inductance, the inductance value of the 4th inductance are 1mH to 5mH.

Preferably, described first inductance, the second inductance, the 3rd inductance, the 4th inductance inductance value identical.

Preferably, described rectification unit, described inductance and described filament analog circuit are arranged at the lamp of described LED daylight lamp In head；At least one LED element described and described first electric capacity are arranged on the lamp plate of described LED daylight lamp.

Preferably, at least one described pin string is provided with Thermal Cutoffs.

Preferably, the temperature threshold scope of described Thermal Cutoffs is between 130 degree to 140 degree.

By above technical scheme, the LED daylight lamp of the application suppresses the mutation of electric current in loop by being provided with inductance, And then suppress electric ballast noise (noise that at this moment electric ballast output current amplitude of variation causes is not not have completely , but human ear is insensitive to this).

In addition, in order to suppress that the electric current flowing to inductance is excessive and caloric value is excessive, the illumination reaching LED module will simultaneously Asking, the application also sets up an overflowing suppression circuit in inductance, thus suppressing the electric current in inductance excessive, reducing the heating of inductance Amount.

Further, in order to prevent the volume of single inductance excessive, the application also adopts 4 small inductors to replace former inductance (635), The volume of power supply can be optimized.Single inductance before relatively, produces the angle of heat, dispersibles power supply operationally inductance from inductance The heat producing, thus improve the reliability of power supply.

Brief description

In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment Or in description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, drawings in the following description are only It is some embodiments of the present utility model, for those skilled in the art, without having to pay creative labor, Other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is this utility model embodiment LED daylight lamp axonometric chart；

Fig. 2 is this utility model embodiment LED daylight lamp three-dimensional exploded view；

Several circuit diagrams of the LED daylight lamp of Fig. 3 a- Fig. 3 h embodiment of the present utility model；

Fig. 4 a, Fig. 4 b are several deformation in Fig. 3；

Fig. 5 a, Fig. 5 b are the deformation of simulation heater chain.

Specific embodiment

Inventor of the present utility model through creative work, it is proposed that a kind of LED daylight on the basis of glass lamp Lamp (in this programme, LED daylight lamp also can be expressed as lighting source, or illuminator), LED element also can be expressed as light source or LED Crystal grain；To solve the problems, such as to mention in background technology and the problems referred to above.

A kind of this utility model embodiment LED daylight lamp of offer, reference Fig. 1-2, including：Fluorescent tube 1, in fluorescent tube 1 Lamp plate 2, and it is socketed on two lamp holders 3 at fluorescent tube 1 two ends respectively.Wherein fluorescent tube 1 can be the peripheral framework of elongate, adopt Plastics fluorescent tube or glass lamp, the present embodiment adopts the glass lamp of tool strengthening section, to avoid traditional glass fluorescent tube easily rupturable And the electric shock accidentss that rupture causes because of electric leakage, and the problem that plastic lantern tube capacity is easily aging.Fluorescent tube 1 can also be elongate U-shaped periphery framework, or the U-shaped LED daylight lamp that the peripheral framework of 2 elongate is formed by connector.

The mode of fluorescent tube strengthening can do secondary operations strengthening using chemical mode or physics mode to glass.Chemistry side The ultimate principle of formula is to improve the intensity of glass with the composition changing glass surface, and its method is first to use other alkali metal ions Exchange with the Na ion of surface layer of glass or K ion, make surface form ion exchange layer.After being cooled to room temperature, at glass In internal layer tension, the pressurized state of outer layer, thus reach the purpose increasing intensity.Chemical mode include but is not limited to high temperature modification from Sub- exchange process, low form ion exchange, dealkalize method, surface crystallization method, sodium silicate reinforcement etc..

Physics mode does to glass to be strengthened, and can include but is not limited to, using mode or the knot changing article of coating Structure.Substrate that coating sprays as needed determines species and the state of coating, can be ceramic tile strengthened coat, acrylic coating or It is glass coating etc., can be liquid or gaseous state coating in coating.Change the structure of article, for example, do in easily rupturable part Structural strengthening design.Below whether chemical mode or physics mode is not limited to single mode and implements, can mix physics Any one in mode or in chemical mode does any matched combined.

The present embodiment is explained with structure-reinforced design, and fluorescent tube 1 includes main body 102 and is located at main body 102 two ends respectively End 101, lamp holder 3 is sheathed on outside end 101.Wherein, the external diameter of at least one end 101 is less than the external diameter of main body 102.This reality Apply in example, the external diameter of two ends 101 of setting is respectively less than the external diameter of main body 102.Specifically, strengthening section is passed through at the two ends of fluorescent tube 1 Process, end 101 forms strengthening section structure, and lamp holder 3 is enclosed within the end 101 after strengthening, so so that lamp holder 3 external diameter and The difference of lamp tube main body 102 external diameter diminishes, or even completely equal, and that is, lamp holder 3 external diameter is equal with main body 102 external diameter.So arrange It is advantageous in that, in transportation, packaging support only will not contact lamp holder 3, and it can contact lamp holder 3 and fluorescent tube 1 simultaneously, Make whole lighting source uniform force, without making lamp holder 3 become unique stress point, it is to avoid lamp holder 3 and lamp tube end 101 The position connecting is concentrated due to stress and is ruptured, and improves the quality of product, and has effect attractive in appearance concurrently.

In the present embodiment, lamp holder 3 external diameter is of substantially equal with main body 102 external diameter, and tolerance is in positive and negative 0.2mm (millimeter), It is no more than positive and negative 1mm.

The purpose of substantially equal with main body 102 external diameter in order to reach lamp holder 3 external diameter, according to the thickness of different lamp holders 3, by force End 101 after change and the difference range of main body 102 external diameter can be 1mm～10mm；Or it is furthermore preferred that the end after strengthening 101 can be relaxed to 2mm～7mm with the difference range of main body 102 external diameter.

In the present embodiment, seamlessly transit between the end 101 of fluorescent tube 1 and main body 102, form a transition part, transition part In cambered surface, that is, transition part section vertically is in arc shaped.

The length of transition part is 1mm～4mm, if less than 1mm, the then insufficient strength of transition part；If greater than 4mm, then The length of main body 102 can be reduced, reduce light-emitting area, simultaneously need to the length of lamp holder 3 is accordingly increased to be coordinated with main body 102, make The material becoming lamp holder 3 increases.In other embodiments, then transition part can not also be arc.

, the external diametrical extent of the end 101 after strengthening is 20.9mm～23mm taking the standard fluorescent tube of T8 as a example, if less than 20.9mm, then the internal diameter of end 101 is too small, leads to lamp circuit module cannot insert in fluorescent tube 1.The external diametrical extent of main body 102 For 25mm～28mm, if less than 25mm, then processed it has not been convenient to its two ends is made with strengthening section with existing process conditions, if More than 28mm, industry standard will not met.

Being connected of lamp holder 3 and fluorescent tube 1 for convenience, the structure that the scheme of the present embodiment is directed to lamp holder 3 is improved.

Lamp holder 3 be sheathed on fluorescent tube 1 outer when, lamp holder 3 is sheathed on outside end 101, and extends to transition part, with transition part part Overlapping.

Lamp holder 3, in addition to hollow conductive pin 301, also includes insulation tube, and is fixedly arranged on leading on insulation tube outer peripheral face Hot portion, wherein hollow conductive pin 301 is on insulation tube.Insulation tube is stretched out towards one end of fluorescent tube, heat conduction in one end of heat-conducting part The extension (stretching out the part of insulation tube) in portion passes through PUR 6 bonding and fluorescent tube 1 between.In the present embodiment, lamp holder 3 passes through Heat-conducting part extends to transition part, and insulation tube does not extend to transition part towards one end of fluorescent tube 1, and that is, insulation tube is towards one end of fluorescent tube There is and transition part between interval.

In the present embodiment, insulation tube is to insulate in general state, does not limit using material as plastics, pottery etc. Material.

PUR 6 (being commonly called as the material for welding powder) composition is preferably：Phenolic resin 2127#, Lac, Colophonium, side Solution stone powder, zinc oxide, ethanol etc..This PUR 6 can change its physical state and occur significantly under conditions of high-temperature heating Expand, reach the effect of solidification, add the stickiness of material itself, such that it is able to make lamp holder 3 be in close contact with fluorescent tube 1, be easy to LED Daylight lamp realizes automated production.In the present embodiment, PUR 6 can present after high-temperature heating and expands and flow, subsequently cold But the effect of solidification can be reached, certainly, the selection of this utility model PUR composition is not limited to this, also can be selected for high temperature The composition solidifying after being heated to predetermined temperature.Because this utility model PUR 6 will not be due to the first device of the heating such as power supply module Part heating forms hot environment and leads to reliability decrease, fluorescent tube 1 and lamp holder 3 during can preventing LED daylight lamp from using Adhesive property reduces, and improves long-term reliability.

Specifically, PUR 6 is filled between the inner surface of heat-conducting part extension and the outer peripheral face of fluorescent tube 1.In other words, The position of PUR 6 filling is passed through by the virtual plane axially vertical with fluorescent tube 1, and sequential is heat-conducting part, PUR 6 and Between the outer peripheral face of fluorescent tube 1.PUR 6 coating thickness can be 0.2mm～0.5mm, and PUR 6 can expand solidify afterwards, thus Contact with fluorescent tube 1 and lamp holder 3 is fixed on fluorescent tube 1.And due between the outer peripheral face of both end 101 and main body 102, there is height Degree is poor, the main body 102 that PUR spills into fluorescent tube therefore can be avoided partly to go up, remove follow-up manual wipping process from, improves The yields producing.

During bonding, heat-conducting part is conducted heat to by external heat equipment, then conduct again to PUR 6, make hot melt Glue 6 expands solidify afterwards, thus lamp holder 3 is fixedly bonded on fluorescent tube 1.

Wherein, heat-conducting part can be the material of various easy conduction heats, be sheet metal, and have concurrently attractive in appearance in the present embodiment Consideration, such as aluminium alloy.Heat-conducting part is in a tubular form (or claiming ring-type).Insulation tube can be various insulant, but to be not easy Heat conduction is preferred, it is to avoid on the power supply module that heat conducts within to lamp holder 3, the performance of impact power supply module, in the present embodiment Insulation tube is plastic tube.

In other embodiments, lamp holder can also be arranged to other forms, for example：

Lamp holder 3, in addition to including insulation tube, also includes magnetic conductive metal part, does not comprise heat-conducting part.Magnetic conductive metal part is installed in absolutely On the inner peripheral surface of edge pipe, and with fluorescent tube 1 radially with lap.

In the present embodiment, whole magnetic conductive metal part is all located in insulation tube, and PUR 6 is coated on the interior table of magnetic conductive metal part On face (magnetic conductive metal part is towards the surface of fluorescent tube 1) and bonding with the outer peripheral face of fluorescent tube 1.Wherein, in order to increase bond area, Improve bonding stability, PUR 6 covers the whole inner surface of magnetic conductive metal part.

During manufacture, insulation tube is inserted in an induction coil so that induction coil and magnetic conductive metal part are along insulation tube Diametrically.During processing, induction coil is energized, forms electromagnetic field after induction coil energising, and electromagnetic field encounters magnetic conductive metal Be converted to electric current after part so that the heating of magnetic conductive metal part, with electromagnetic induction technology, magnetic conductive metal part generated heat, and heat Conduct to PUR 6, PUR 6 expands after absorbing heat and flows, subsequently cooling makes PUR 6 solidify, to realize lamp 3 purposes being fixed on fluorescent tube 1.Induction coil try one's best coaxial with insulation tube so that energy transmission is more uniform.The present embodiment In, the deviation between induction coil and insulation tube axis is less than 0.05mm.After the completion of bonding, fluorescent tube 1 is detached sensing Coil.In the present embodiment, PUR 6 can present and expands and flow after absorbing heat, and subsequent cooling can reach the effect of solidification Really, certainly, the selection of this utility model PUR composition is not limited to this, the one-tenth solidifying after also can be selected for absorbing heat Part.Or, it is not necessary to additionally arrange magnetic conductive metal part it is only necessary to directly join in PUR 6 in lamp holder 3 in other embodiment The high magnetic conductivity material powder of miscellaneous predetermined ratio, for example:Ferrum, nickel, ferrum nickel mixture etc., during processing, induction coil are energized, sense So that the high magnetic conductivity material powder being evenly distributed in PUR 6 is powered after answering coil electricity, and then make PUR 6 Heat, PUR 6 expands after absorbing heat and flows, and subsequently cools and solidifies, to realize lamp holder 3 is fixed on the purpose of fluorescent tube 1.

In other embodiments, lamp holder 3 be also designed to all-metal, now need the bottom of hollow conductive pin increase If an insulator, make to be electrically insulated between lamp holder 3 and hollow conductive pin, to reach high pressure resistant effect, it is to avoid user touches Electric shock problem during lamp holder 3.

In other embodiments, lamp holder 3 is also designed to plastics and metal (metal part connection conductive pin) hybrid junction Structure, now need to set up an insulator in the bottom of hollow conductive pin, make electrically exhausted between lamp holder 3 and hollow conductive pin Edge, to reach high pressure resistant effect, it is to avoid user touches electric shock problem during lamp holder 3.

In other embodiments, magnetic conductive metal part has an at least one emptying aperture structure, emptying aperture structure generally circular in shape, but not Be limited to circle, can for example, oval, square, star etc., as long as the inner peripheral surface of magnetic conductive metal part and insulation tube can be reduced Contact area, but the function that heat cure is hot melt 6 glue can be reached.It is preferred that emptying aperture structural area accounts for magnetic conductive metal part face Long-pending 10%～50%.The arrangement of emptying aperture structure can in circumferentially equidistant from be spaced or non-equally spaced arrangement etc..

In the present embodiment, magnetic conductive metal part is a positive round shape ring.In other embodiments, magnetic conductive metal part is a non-positive round Shape ring, such as but not limited to vesica piscis, when fluorescent tube 1 and lamp holder 3 are oval, the short axle of vesica piscis is slightly larger than fluorescent tube end Portion's external diameter, to reduce the contact area of the outer surface of magnetic conductive metal part and the inner peripheral surface of insulation tube, but can reach heat cure heat The function of melten gel 6.In other words, the inner peripheral surface of insulation tube has supporting part, the magnetic conductive metal part of anon-normal circular rings is located at support In portion, therefore, it can make the contact area of the inner peripheral surface of magnetic conductive metal part and insulation tube to reduce, and solidifying hot-melt adhesive can be reached again 6 function.

With continued reference to Fig. 2, the LED daylight lamp of the present embodiment also includes bonding agent 4, lamp plate insulating cement 7 and light source glue 8.Lamp Plate 2 is pasted on the inner peripheral surface of fluorescent tube 1 by bonding agent 4.Shown in figure, bonding agent 4 can be silica gel, and its form does not limit, can Being several sections shown in figure, or a section in strip.

Lamp plate insulating cement 7 is applied to lamp plate 2 towards on the surface of light source 202 so that lamp plate 2 does not expose, thus playing lamp The insulating effect that plate 2 is isolated from the outside.Through hole 701 corresponding with light source 202 is reserved, light source 202 is located at through hole 701 during gluing In.The constituent of lamp plate insulating cement 7 includes vinyl polysiloxane, hydrogen-based polysiloxanes and aluminium oxide.Lamp plate insulating cement 7 Thickness range is 100 μm～140 μm (micron).If less than 100 μm, then do not have enough insulating effects, if greater than 140 μm, then can cause the waste of material.

Light source glue 8 is applied to the surface of LED element 202.The color of light source glue 8 is transparent color, to ensure light transmittance.Coat to Behind LED element 202 surface, the shape of light source glue 8 can be graininess, strip or lamellar.Wherein, the parameter of light source glue 8 has folding Penetrate rate, thickness etc..The scope that the refractive index of light source glue 8 allows is 1.22～1.6, if the refractive index of light source glue 8 is LED element 202 housing refractive indexs open radical sign, or the refractive index of light source glue 8 be LED element 202 housing refractive index open the positive and negative of radical sign 15%, then the angular range that total reflection (Internal Total Reflection) occurs can be made less, therefore light transmittance is relatively Good.Here light source shell refers to accommodate the housing of LED grain (or chip).The ranges of indices of refraction of light source glue 8 in the present embodiment For 1.225～1.253.The thickness range that light source glue 8 allows is 1.1mm～1.3mm, if less than 1.1mm, it will lid does not live LED element 202, effect on driving birds is not good, if greater than 1.3mm, then can reduce light transmittance, also can increase material cost simultaneously.

During assembling, first light source glue 8 is applied to the surface of light source 202；Then lamp plate insulating cement 7 is applied on lamp plate 2 On side surface；Again LED element 202 is fixed on lamp plate 2；Then a side surface opposite with LED element 202 for lamp plate 2 is led to Cross bonding agent 4 and paste the inner peripheral surface being fixed on fluorescent tube 1；The last end that lamp holder 3 is fixed on fluorescent tube 1 again, simultaneously by LED element 202 are electrically connected with lamp circuit module 5.Or get over transition part using flexible circuit board and power solder (passed through Portion of crossing is welded with lamp circuit module 5), or take the mode of conventional wires routing to make lamp plate 2 electrical with lamp circuit module 5 It is connected, last lamp holder 3 is connected on the transition part at strengthening section, form a complete LED daylight lamp.

In the present embodiment, lamp plate 2 is fixed on the inner peripheral surface of fluorescent tube 1 so that LED element 202 is sticked in lamp by bonding agent 4 On the inner peripheral surface of pipe 1, so can increase whole lighting source lighting angle, expand angle of visibility, such setting typically can make Obtain angle of visibility and can exceed 300 degree.By applying lamp plate insulating cement 7 in lamp plate 2, the light source glue 8 of insulation is applied on LED element 202, Realize the insulation processing to whole lamp plate 2, so, even if fluorescent tube 1 ruptures, electric shock accidentss also will not occur, meet wanting of safety Ask, improve safety.

In other embodiments, lamp plate 2 can be in flexible base board, strip aluminium base, FR4 plate or flexible circuit board Any one.Because the fluorescent tube 1 of the present embodiment is glass lamp, if lamp plate 2 is using rigid strip aluminium base or FR4 Plate, then when 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 has May think that lighting source can also use and go voluntarily to install, be easily caused electric shock accidentss.Due to flexible circuit board tool There are pliability and flexible characteristic, solve rigid strip aluminium base, FR4 plate or Conventional communication flexible with three layers of flexible base board Property the situation not enough with bendability, the lamp plate 2 of therefore the present embodiment adopts flexible circuit board, so after fluorescent tube 1 ruptures, lamp The fluorescent tube 1 of rupture cannot be supported to continue to remain straight tube state after pipe 1 rupture, to inform that user's lighting source can not make With, it is to avoid the generation of electric shock accidentss.Therefore, after using flexible circuit board, can alleviate due to glass to a certain extent The electric shock problem that pipe is broken and causes.

Following examples to be explained using flexible circuit board as utility model lamp plate 2.

Wherein, can be connected by wire routing between flexible circuit board and the outfan of lamp circuit module 5, or Connect through male plug, female plug, or, by being welded to connect.Consistent with the fixed form of aforementioned lamp plate 2, flexible circuit board One side surface is bonded and fixed to the inner peripheral surface of fluorescent tube 1 by bonding agent 4, and the two ends of flexible circuit board can select fixing or Person is not fixed on the inner peripheral surface of fluorescent tube 1.

With continued reference to Fig. 2, lamp plate 2 is provided with some LED element 202, is provided with lamp circuit module 5, LED unit in lamp holder 3 Pass through lamp plate 2 electrical communication between part 202 and lamp circuit module 5.

Wherein, lamp circuit module 5 can for single body (i.e. all driving power supply assemblies are all integrated in a part, Lamp circuit module 5 generally comprises such as rectification unit, control circuit etc. in filtration module, and some embodiments), and located at fluorescent tube In the lamp holder 3 of 1 one end；Or lamp circuit module 5 can also be divided into two parts, (i.e. all power supply modules divide referred to as double individualities It is not arranged in two parts), and two parts are respectively arranged in the lamp holder 3 of lamp tube ends.Or it is placed on the outer of LED daylight lamp Face, is connected with LED daylight lamp by wire.If strengthening section process is made in fluorescent tube 1 only one end, power supply prioritizing selection is single In body, and the lamp holder 3 corresponding to located at the end 101 after strengthening.

No matter being single body or double individuality, the generation type of lamp circuit module can have Mutiple Choice, for example, it is possible to For the module after a kind of embedding molding, specifically, using a kind of silica gel of high heat conduction (heat conductivity >=0.7w/m k), pass through Mould carries out embedding molding to driving power supply assembly and obtains.The lamp circuit module that this mode obtains has high insulation, height dissipates The more regular advantage of heat, profile, and can easily coordinate with other structures part.Or or do not make embedding gum forming, Directly exposed lamp circuit modular assembly is embedded in inside lamp holder, or by exposed lamp circuit module with traditional pyrocondensation After pipe encases, then the inside of embedded lamp holder 3.Or lamp circuit module is arranged on the outside of lamp holder i.e. by way of external Realize.

In general, with reference to Fig. 2.As shown in Fig. 2 connector and corresponding lamp plate 2 are passed through in one end of lamp circuit module 5 End is connected, and lamp holder 3 is provided with the hollow conductive pin 301 for connecting external power source.The other end passes through metal ferrule (wire) 502 It is inserted in the hollow conductive pin 301 of lamp holder 3.After metal ferrule 502 inserts in hollow conductive pin 301, through outside punching press The hollow conductive pin of tool impact 301 is so that there is slight deformation in hollow conductive pin 301, thus fixing lamp circuit module 5 On metal ferrule 502, and realize be electrically connected.

Lamp holder 3 be provided with WIFI shape air-vent (alternatively other shapes, such as point-like, Xiao Lianzhuan, enable ventilative i.e. Can).

During energising, electric current pass sequentially through the hollow conductive pin 301 of LED daylight lamp one end, lamp circuit module 5 (mainly by Rectification unit etc. forms) reach lamp plate 2, and LED element (sometimes referred to as light source 202) is reached by lamp plate 2, and then LED element Luminous, lamp circuit module 5 and lamp plate 2 generally pass through welding and realize electrical connection.For LED daylight lamp, on usual lamp plate 2 LED element is only set.The components and parts of simulation heater chain are sometimes also provided with lamp plate 2.

The lamp circuit module 5 being provided with lamp holder 3 (is also referred to as light source in some embodiments with lamp plate 2 and LED element 632 202nd, LED element 202, LED element 632) connection circuit illustrate as shown in Figure 1 to Figure 3.Lamp circuit module and LED mould Block is all contained in this LED daylight lamp.LED daylight lamp each side there is a lamp holder (as shown in Figure 2), be socketed on fluorescent tube Two ends.Refer to shown in Fig. 2, left side lamp holder 3 has hollow conductive pin 301.One surface of lamp holder 3 has hollow conductive pin 301.Reference Fig. 2 simultaneously combines Fig. 3, and hollow conductive pin 301 is provided with 4 altogether, is respectively and electrically connected to 4 metal ferrules 502 (i.e., First pin A1 of side, the second pin A2；And the 3rd pin B1, the 4th pin B2 of opposite side).

As shown in Figure 3 a, be the LED daylight lamp of this utility model first preferred embodiment circuit diagram.LED daylight Lamp 100 comprises：Rectification unit 510, filter unit 520, LED module 530, for the protection circuit 560 of voltage clamp and be used for The circuit for detecting 570 of detecting voltage signal.

Rectification unit 510 is electrically connected with the first pin A1, the second pin A2 of this LED daylight lamp, in order to will couple this An at least one of AC rectification of one pin A1 and this second pin A2 becomes unidirectional current.

Filter unit 520 is electrically connected with this rectification unit 510 to receive this unidirectional current, in order to filter this unidirectional current.

LED module 530 is electrically connected with this filter unit 520, and corresponds to the unidirectional current of filtering and light.

In the present embodiment, rectification unit 510 is a bridge rectifier, comprises diode 511,512,513 and 514, In order to all wave rectification is carried out to the alternating current accepting, to produce unidirectional current.

One anode of diode 513 is electrically connected with one end of this filter unit 520, and negative electrode is electrically connected with this diode 511 An anode, and a negative electrode of this diode 511 is electrically connected with the other end of this filter unit 120.Above-mentioned diode 511 and 513 junction point is electrically connected with this first pin A1.The anode of diode 514 is electrically connected with one end of this filter unit 520, cloudy Pole is electrically connected with the negative electrode of diode 512, and the negative electrode of diode 512 is electrically connected with the negative electrode of diode 511.Two above-mentioned poles The junction point of pipe 512 and 514 is electrically connected with this second pin A2.

Rectification unit 510 can also be other kinds of full-wave rectifying circuit or half-wave rectifying circuit, and does not affect this reality The function to be reached with New Scheme.

In the present embodiment, filter unit 520 comprises electric capacity 522,523 and one inductance 521.This electric capacity 522 with connect This diode 513 and 514 is in parallel.And this electric capacity 523 is connected with this inductance 521, then in parallel with this electric capacity 522.This filtering list Unit 520 receives this DC signal after this rectification unit 510 rectification, and filters the radio-frequency component in this DC signal.Through being somebody's turn to do Filter unit 520 this DC signal filtered, the smooth DC waveform of its waveform preferably.

This filter unit 520 can also be the filter circuit that other can filter radio-frequency component, and do not affect this utility model The function to be reached.

In the present embodiment, LED module 530 comprises inductance 634, at least one LED component 631, transistor switch 635, two Pole pipe 633 and electric capacity 632.Inductance 634, transistor switch 635, diode 633 and electric capacity 632, may be disposed in lamp holder, And LED component 631 is arranged on lamp plate.Diode 633 is connected with transistor switch 635, then the electric capacity with filter unit 520 523 is in parallel.The anode of diode 633 is electrically connected with one end (that is, the junction point with this transistor switch 635) of inductance 634, its Negative electrode is electrically connected with the anode of this at least one LED component 631, and the negative electrode of this at least LED component 631 is electrically connected with this inductance 634 other end.The branch circuit parallel connection being formed at least one LED component 631 has electric capacity 632.

Transistor switch 635 receives pulse signal, periodically to be turned on according to this pulse signal and to end.Above-mentioned pulse Signal can be the pulse signal of a fixed pulse width, or by a PWM controller (not shown) according to this at least LED group A pulse width modulation signal produced by the electric current of part 631.When transistor switch 635 turns on, the electric current of this inductance 521 flows through this Transistor switch 635.When this transistor switch 635 ends, the electric current of inductance L flows through this at least LED component through diode 633 631 so as to light.

In the present embodiment, transistor switch 635 is N-type metal-oxide half field effect transistor, and p-type MOSFET crystal Manage, or enhancement mode metal-oxide half field effect transistor, vague and general type metal-oxide half field effect transistor, bipolar transistor etc. have switch work( The transistor of energy is also applicable to this utility model.

This at least LED component 631 can be single string or light emitting diode of going here and there more, with the different power demand of correspondence, provide Required illumination.

In the present embodiment, for the protection circuit 560 of voltage clamp, including at least a discharge tube.When rectification unit 510 When the magnitude of voltage of output exceeds the threshold value pre-setting, moment clamps the voltage at the threshold value of setting.

In the present embodiment, circuit for detecting 570 is used for detecting the voltage value information of filter unit 520 output.When detecting electricity When the magnitude of voltage of rectification unit 510 output of road 570 detection exceeds the threshold value pre-setting, trigger switch 573, switch 573 is led Logical, now from the electric current of filter unit 520 output through LED element 631, and switch 573 return, form The electric loop (i.e. LED daylight Lamp daylight lamp is operated under DR pattern)；When circuit for detecting 570 detection rectification unit 510 output magnitude of voltage without departing from advance Setting threshold value when, will not trigger switch 573, switch 573 disconnection.Now switch 635 work (i.e. LED daylight lamp daylight lamp work Make under BP pattern).

Parameter declaration：In such scheme, the discharge tube selected threshold in protection circuit 560 is 400V～1300V；Preferably Selected threshold is 500V～600V.500V is chosen in the present embodiment.One protection circuit of this utility model is real as shown in Figure 4 a Apply mode.Other embodiment also can, as long as enable set triggering discharge tube.

In above-described embodiment, circuit for detecting 570 be used for detection rectification unit 510 output magnitude of voltage exceed pre-set Threshold value, this threshold value be generally 400V～1300V between certain value.Preferably, certain value between selection～450V～700V.

As shown in Figure 3 b, be the LED daylight lamp of this utility model second preferred embodiment circuit diagram.LED daylight Lamp 100 comprises：Rectification unit 510, filter unit 520, LED module 530, for the protection circuit 560 of voltage clamp and be used for The circuit for detecting 770 (composition of circuit for detecting 770 is as shown in Figure 4 b) of detecting current frenquency signal.Difference with Fig. 3 a scheme exists In：Detect the frequency of input current by circuit for detecting 770, if being detected as high frequency (generally from the electric current of electric ballast output Frequency is more than 20KHz, generally 45KHz about) when, the switch at this moment arranging in triggering circuit for detecting, i.e. LED daylight lamp work In DR pattern；During as being detected as non-high frequency, at this moment do not trigger the switch of setting in circuit for detecting, that is, LED daylight lamp is operated in BP Pattern.

Such scheme, circuit for detecting 770 is alternatively other frequency detection circuits (as long as this frequency detection circuit can be examined Go out frequency and be more than 20KHz).

The basic conception of the technical program：

It is provided with the circuit for detecting of detection input signal, this circuit for detecting can detect the voltage of input signal in LED daylight lamp Information or the frequency information of input signal.According to the result of this circuit for detecting detection, LED daylight lamp is operated in the pattern of setting. As：The information of voltage of the filter unit output of circuit for detecting detection is more than the threshold value setting, and (generally higher than 400V, is preferably set to 450V), at this moment trigger the switch of setting in circuit for detecting, that is, LED daylight lamp is operated in DR pattern；The filtering of circuit for detecting detection The information of voltage of unit output is operated in BP pattern not less than the threshold value setting, i.e. LED daylight lamp.As：Circuit for detecting is (for frequency Testing circuit) frequency information of the signal of input rectifying unit that detects, such as it is detected as high frequency and (generally export from electric ballast Power frequency be more than 20KHz, generally 45KHz) when, at this moment in triggering circuit for detecting setting switch, i.e. LED daylight Lamp is operated in DR pattern；During as being detected as non-high frequency, at this moment do not trigger the switch of setting in circuit for detecting, i.e. LED daylight lamp work Make in BP pattern.

The voltage clamp basic conception that the technical program proposes：

By detection filter unit output voltage, when reaching given threshold, trigger controlling switch.Will be right after this switch Filter unit output voltage discharged (according to set threshold value select appropriate size discharge tube, typically choose 500V～ The discharge tube of 600V specification, 500V specification is chosen in this case) control its magnitude of voltage no longer to rise, make filtered voltage maintain one Determine scope.So design is advantageous in that it is ensured that can be selected for relatively low pressure element in subsequent conditioning circuit, thus reduces cost. Improve the reliability of fluorescent tube.

As shown in Figure 3 c, be the LED daylight lamp of this utility model the 3rd preferred embodiment circuit diagram.LED daylight Lamp 500 comprises：Rectification unit 510, LED module 530, delay switch circuit 1590.

(in other examples, pin A can for pin A, the pin B of rectification unit 510 this LED daylight lamp of electric connection It is split as pin 501/502；Pin B is split as pin 503/504), in order to the ballast of this pin A or this pin B will be coupled AC rectification become unidirectional current.This ballast can be inductance type ballast or electronic ballast.

LED module 530 is electrically connected with this rectification unit 510, and corresponds to the unidirectional current of filtering and light.

In the present embodiment, LED module 530 comprises electric capacity 633 (the first electric capacity).This electric capacity 633 and LED element 632 shape The branch road becoming.Play voltage stabilizing and the effect of filtering.Filter for by this DC signal after rectification, and filter in this DC signal Radio-frequency component.

Delay switch circuit 1590, comprises：One MOS switch 1591, drive this MOS switch 1591 work IC module and should The supplementary module of IC module.This supplementary module, includes at least, and provides the IC branch road of module working power, and sampling branch road.There is provided A routing resistance 1594 of IC module working power and electric capacity 1595 series connection are formed, in the junction point of resistance 1594 and electric capacity 1595 It is electrically coupled to the power drives port (VCC) of IC module.Sampling branch road has resistance 1593 and 1593 series connection to be formed, and IC module has There is OVP port, by the magnitude of voltage (voltage over the ground) of the junction point of this port sampling resistor 1593 and 1593, according to this voltage Value IC module drive MOS switch 1591 action (conduction and cut-off).

Parameter declaration：IC module is connected in series the magnitude of voltage (electricity over the ground at point D end by sampling resistor 1593 and 1593 Pressure).This magnitude of voltage 0.9V～1.25V.Preferably choose 1.0V.At this moment IC module sends instruction, and MOS switch 1591 turns on.Resistance 1592 resistance 200K ohm～500K ohm；Preferably choose, 300K ohm～400K ohm；360K is chosen in the present embodiment Ohm；Resistance 0.5K of resistance 1592～4K ohm, preferably chooses 1.0K ohm～3K ohm；1K Europe is chosen in the present embodiment Nurse.In the LED daylight lamp of sampling this programme, the end points C being formed for sampling resistor 1593 and 1593 series connection：Apply in electronics town During stream device occasion, LED daylight lamp switch on power the initial stage (time is less than in 100ms, in usual 20～30ms) voltage of C-terminal between 200V～300V, smoothly works with electric ballast, and the voltage of C-terminal raises, and then the voltage at D end also increases, and works as D When the voltage at end reaches the threshold value of design, IC module sends instruction (signal), and MOS switch turns on (LED daylight lamp work), afterwards MOS switch maintains conducting state；Apply the characteristic running " zero passage " in Inductive ballast occasion using Inductive ballast, with As a example civil power 120V, when the initial stage of LED daylight lamp energising, (when the voltage of IC module samples to D end is less than 0.2V, (this programme is adopted With 0.1V), IC module sends instruction, and MOS switch turns on, and MOS switch maintains conducting state afterwards.

By above-mentioned design, LED daylight lamp can be applicable to the occasion of electric ballast and Inductive ballast.

In such scheme, IC module and MOS switch are packaged into a module.

As the deformation of such scheme, IC module passes through sampling, the power frequency of rectification unit output, controls MOS switch Action (conduction and cut-off).Be typically used in Inductive ballast occasion when, the frequency of detection is less than 400Hz；And apply During the occasion of electric ballast, it is high-frequency signal.By the threshold value of setpoint frequency, also can achieve that LED daylight lamp is applied to inductance Ballast and electric ballast.

As shown in Figure 3 d, be the LED daylight lamp of this utility model the 4th preferred embodiment circuit diagram.LED daylight Lamp 500 comprises：Rectification unit 510, LED module 530, delay switch circuit 1590.

Rectification unit 510 is electrically connected with pin 501/502 and the pin 503/504 of this LED daylight lamp, in order to by coupling The AC rectification connecing the output of this pin ballast becomes unidirectional current.This ballast is electronic ballast (alternatively inductance type town Stream device).

In the present embodiment, LED module 530 also comprises electric capacity 633 (the first electric capacity).This electric capacity 633 and at least one LED The branch circuit parallel connection that element 632 is formed, plays voltage stabilizing and the effect of filtering.This first electric capacity 633 can for single electric capacity it is also possible to Formed by least 2 capacitances in series.LED module 530 also comprises inductance 635, this inductance 635 and at least one LED element 632 Connect in road.Suppress the mutation of electric current in loop by this inductance 635.And then suppress noise (the at this moment electronics of electric ballast The noise that ballast current output amplitude of variation causes be not completely without, but human ear is insensitive to this)

In other embodiments of the present utility model, above-mentioned electric capacity 633 is also parallel with release can resistance (not shown, be used for Prevent LED element from flashing).This resistance can be for single resistance it is also possible to be formed by least 2 small resistor series connection.

In other embodiments of the present utility model, above-mentioned inductance 635 is also parallel with diode 634 (this diode The opposite polarity (as shown in Figure 3 d) of the branch road that polarity is formed with LED element 632.This diode 634 plays afterflow to inductance 635 Effect.

As the deformation of embodiment of the present utility model, inductance 635 may be provided at rectification unit 510 and LED module 530 it Between (diode of inductance and its parallel connection at this moment, in LED module 530, can be not provided with).Can also be provided at pin and rectification unit 510 Between (and before rectification).At this moment, also can on this inductance parallel diode (afterflow is carried out to this inductance).

As the deformation of above-described embodiment scheme, it has been provided with clamp diode between the outfan of side rectification unit 510 Protection LED daylight lamp 500.The threshold value of generally this clamp diode is selected from certain value in 600V～800V, in this programme, pincers The threshold value of position diode is 700V.

Delay switch circuit 1590, comprises：One MOS switch 1591, drive this MOS switch 1591 work IC module and should The supplementary module of IC module.This supplementary module, includes at least, and provides the IC branch road of module working power, and sampling branch road.There is provided A routing resistance 1594 of IC module working power and electric capacity 1595 series connection are formed, in the junction point of resistance 1594 and electric capacity 1595 It is electrically coupled to the power drives port (VCC) of IC module.Sampling branch road has resistance 1592 and 1593 series connection to be formed, and IC module has There is OVP port, by the magnitude of voltage (voltage over the ground) of the junction point of this port sampling resistor 1593 and 1593, according to this voltage Value IC module drive MOS switch 1591 action (conduction and cut-off).

Parameter declaration：IC module is connected in series the magnitude of voltage (electricity over the ground at point D end by sampling resistor 1592 and 1593 Pressure).This magnitude of voltage 0.9V～1.25V.Preferably choose 1.0V.At this moment IC module sends instruction, and MOS switch 1591 turns on.Resistance 1592 resistance 200K ohm～500K ohm；Preferably choose, 300K ohm～400K ohm；360K is chosen in the present embodiment Ohm；Resistance 0.5K of resistance 1592～4K ohm, preferably chooses 1.0K ohm～3K ohm；1K Europe is chosen in the present embodiment Nurse.In the LED daylight lamp of sampling this programme, the end points C being formed for sampling resistor 1592 and 1593 series connection：Apply in electronics town During stream device occasion, LED daylight lamp switch on power the initial stage (time is less than in 100ms, in usual 20～30ms) voltage of C-terminal between 200V～300V, smoothly works with electric ballast, and the voltage of C-terminal raises, and then the voltage at D end also increases, and works as D When the voltage at end reaches the threshold value of design, IC module sends instruction (signal), and MOS switch turns on (LED daylight lamp work), afterwards MOS switch maintains conducting state；Apply the characteristic running " zero passage " in Inductive ballast occasion using Inductive ballast, with As a example civil power 120V, when the initial stage of LED daylight lamp energising, (when the voltage of IC module samples to D end is less than 0.2V, (this programme is adopted With 0.1V), IC module sends instruction, and MOS switch turns on, and MOS switch maintains conducting state afterwards.

The inductance set up chooses 1～10mH.Preferably choose 1～5mH.2mH is chosen in above-described embodiment.

In such scheme, IC module and MOS switch are packaged into a module.

As shown in Figure 3 e, be the LED daylight lamp of this utility model the 5th preferred embodiment circuit diagram.With Fig. 3 d's Difference is, embodiment adds two simulation heater chains 570, the two of this two simulations each self-contained series connection of heater chain 570 Resistance 573 (3rd resistor) and 574 (the 4th resistance), and series connection electric capacity 571 (the second electric capacity) and 572 (the 3rd electric capacity), And the junction point of this two resistance 573 and 574 couples the junction point of this two electric capacity 571 and 572.When light-emitting diode lamp tube is installed on Have preheating function tube face when (for example：There is the tube face of electric ballast), in warm, the electric current of AC signal This resistance 573 and 574, this electric capacity 571 and 572 of this two simulations heater chain 570 can be flowed through, and reach the effect of simulation filament Really.So, electric ballast can normally spend the filament pre-heating stage on startup, and ensures that electric ballast normally starts.

As the deformation of such scheme, in other embodiments of the present utility model, in the pin (501 of LED daylight lamp And/or 502；503 and/or 504) upper string sets a protection device.Preferably this protection device is Thermal Cutoffs, to prevent LED day Light lamp is struck sparks in hot line job (the mechanism of sparking：High pressure can be exported (usually during electric ballast stable operation 600Vrms), in charged for replacement LED daylight lamp fluorescent tube, if LED daylight lamp fluorescent tube one end has connected, one end is not in contact with (i.e. there is a certain distance in the conductive pin on the lamp holder of LED daylight lamp and the conductive copper sheet of lamp socket).In this case, due to leading There is high pressure between acusector and conductive copper sheet, air can be punctured and form arcing, substantial amounts of heat can be produced at electric arc, lead to conductive pin And neighbouring working of plastics (lamp holder) is the problems such as melt.), burn the lamp holder of LED daylight lamp.Generally, choose the temperature of Thermal Cutoffs Degree threshold range is between 130 degree～150 degree.Preferably, the temperature threshold scope of Thermal Cutoffs is between 130 degree～140 degree.On State in embodiment, the temperature threshold scope of Thermal Cutoffs chooses 140 degree.When the lamp holder of this LED daylight lamp occurs sparking, melt Break this Thermal Cutoffs.

Simulation heater chain also can be using the scheme being only NTC (negative temperature coefficient resister).Now the resistance of this NTC does not surpass Cross 15 ohm.Preferably, resistance is between 2 ohm～10 ohm.Generally choose 4～5 ohm.

As illustrated in figure 3f, be the LED daylight lamp of this utility model the 6th preferred embodiment circuit diagram.

LED daylight lamp 500 comprises：Rectification unit 510, LED module 530, control circuit 2590.

Rectification unit 510 is electrically connected with pin 501/502 and the pin 503/504 of this LED daylight lamp, in order to by coupling The AC rectification connecing the ballast output of this pin becomes unidirectional current.This ballast is electronic ballast (alternatively inductance type Ballast).

In the present embodiment, LED module 530 comprises electric capacity 633 (the first electric capacity).This electric capacity 633 and LED element 632 shape The branch circuit parallel connection becoming, plays voltage stabilizing and the effect of filtering.

LED module 530 also comprises inductance 635, and this inductance 635 is connected with least one LED element 632 branch road.By this Inductance 635 is suppressing the mutation of electric current in loop.And then suppress noise (the at this moment electric ballast output current of electric ballast The noise that amplitude of variation causes be not completely without, but human ear is insensitive to this).Because inductance 635 has suppression electric current The function of mutation, such as initially flows to the electric current larger (as 1A) of this inductance, then this inductance is constantly in the shape flowing through larger current State, the heating of such inductance is more severe.In order to suppress to flow to the electric current of inductance 635, the illumination simultaneously reaching LED module will Ask.The present embodiment sets up an overflowing suppression circuit at inductance 635, and (circuit flowing to inductance 635 exceedes the threshold value of design, such as 0.35A, then trigger this suppression circuit.

Next, this overflowing suppression circuit of detailed description.This overflowing suppression circuit includes audion 638, resistance 636 (first resistor), resistance 637 (second resistance).The base stage of audion 638 and colelctor electrode are connected respectively to the two ends of inductance 635 (colelctor electrode of audion 638 is connected to the cathode terminal of LED element 632), in base stage and inter-collector and the base stage of audion 638 It is respectively equipped with resistance 636, resistance 637 with emitter stage part, the emitter stage of audion 638 is connected to the DRN end of IC module 2591.Logical The electric current that often LED element 632 flows out forms loop through inductance 635 and resistance 637, and current flowing resistance 637 forms pressure drop, when this Pressure drop reaches the conducting voltage (usually 0.7V) of audion 638, and audion 638 turns on, and at this moment portion of electrical current divides through audion Stream.Thus reaching the electric current (realization suppresses the excessive purpose of the electric current flowing to inductance 635) that suppression flows through resistance 637.This enforcement In example, resistance 637 chooses 1.7 ohm.But also can adjust according to the size of current setting and (flow through resistance and the electricity of this resistance The product of stream is the conduction threshold of audion).Resistance 636 generally chooses 0.5～2K.1K ohm is chosen in the present embodiment.In addition, Resistance 636 can also be to audion 638 overvoltage protection.

As the deformation of such scheme, audion 638 also can use MOSFET pipe to substitute.

In other embodiments of the present utility model, above-mentioned electric capacity 633 is also parallel with for release can resistance (not shown, For preventing LED element from flashing).

Control circuit 2590, comprises：IC module 2591；This IC module comprises

The VCC end of IC module 2591, earth terminal GND (reference ground), the current detecting CS end of overcurrent protection, built-in MOSFET drain D RN end and stopping end STP；One end of resistance 2598 is connected with an outfan of rectification unit 510, and the other end is even Connect the one end with electric capacity 2599, the other end ground connection of electric capacity 2599.The junction of resistance 2598 and electric capacity 2599 be electrically connected to VCC end, powering to IC module 2591, (voltage of VCC is usually 10～30V, preferably, 20～30V, the present embodiment is chosen 28V)；

Resistance 2594 is connected with resistance 2595 the electrical outfan being connected to rectification unit 510 in branch road two ends being formed, The junction of resistance 2594 and resistance 2595 is electrically connected to the CS end of IC module 2591 through resistance 2596；Set between CS end and B There is electric capacity 2597；

Sampling branch road has resistance 2592 and 2593 series connection to be formed, and IC module 2591 has STP (i.e. OVP) port, by this The magnitude of voltage (voltage over the ground) at the junction point D end of port sampling resistor 2592 and 2593, according to this magnitude of voltage, IC module 2591 Drive conduction and cut-off.The present embodiment, applies in electric ballast occasion, LED daylight lamp switches on power the initial stage, and (time is less than In 100ms, in usual 20～30ms) voltage of C-terminal, between 200V～300V, smoothly works with electric ballast, C-terminal Voltage raises, and then the voltage at D end also increases, and when the voltage at D end reaches the threshold value of design, IC module sends instruction (signal), MOS switch turns on (LED daylight lamp work), and MOS switch maintains conducting state afterwards；The resistance of resistance 2592 is The resistance of 540K ohm and resistance 2593 is 1K ohm, and the conducting voltage of IC module 2591 is：1.2V (also can according to this algorithm, Preset other threshold values).

The also compatible ballast of the scheme of the present embodiment is inductive type ballast.(using inductive ballast " zero passage " Characteristic, that is, sample Vd<0.2v).Apply the characteristic running " zero passage " in Inductive ballast occasion using Inductive ballast, with As a example civil power 120V, when the initial stage of LED daylight lamp energising, (when the voltage of IC module samples to D end is less than 0.2V, (this programme is adopted With 0.1V), IC module 2591 sends instruction, and built-in MOS switch turns on, and MOS switch maintains conducting state afterwards.

As the improvement of such scheme, in order to maintain stablizing of STP end, can be connected in parallel with a capacitor at resistance 2593.Should Electric capacity value 100～500nF, preferably chooses 200～300nF, and the present embodiment chooses 220nF.

Parameter declaration：

The turn-on condition at the STP end of IC module 2591 is：The IC mould as the voltage Vd≤0.2v or Vd >=1.2v at D end of sampling Block 2591 turns on.IC module 2591 is connected in series the magnitude of voltage (voltage over the ground) at point D end by sampling resistor 2592 and 2593. This magnitude of voltage 0.9V～1.25V.Preferably choose 1.0V.At this moment IC module 2591 sends instruction, and DRN end turns on.

Resistance 200K ohm～600K ohm of resistance 2592；Preferably choose, 300K ohm～600K ohm；This enforcement 540K ohm is chosen in example；Resistance 0.5K of resistance 2592～4K ohm, preferably chooses 1.0K ohm～3K ohm；This enforcement 1K ohm is chosen in example.Resistance 200K ohm～500K ohm of resistance 2594；Preferably choose, 300K ohm～500K Europe Nurse；420K ohm is chosen in the present embodiment；Resistance 0.5K of resistance 2595～4K ohm, preferably chooses 1.0K ohm～3K Europe Nurse；1K ohm is chosen in the present embodiment.

The inductance value of the inductance 635 set up chooses 1～10mH.Preferably choose 1～8mH.Choose in above-described embodiment 6mH.

For increasing the resistance to pressure of IC module 2591, between A end and ground connection, set up a bilateral diode or discharge tube.Two-way two Voltage threshold 300～the 600V of pole pipe or discharge tube.Preferably, choosing 400～500V.In the present embodiment, threshold value is chosen for 400V.

In one embodiment, LED daylight lamp also include simulate heater chain, simulation heater chain be coupled to pin with Between rectification unit.Simulation heater chain is used for supplying the alternating current of ballast output through to simulate filament in warm-up phase.Logical Chang Eryan, two ends of LED daylight lamp are equipped with pin (one end two pin), and accordingly, rectification unit also has two and (also may be used To be referred to as two rectification units), match with it, simulation heater chain also has two it is also possible to referred to as two simulation filaments electricity Road.Wherein, in each end of LED daylight lamp, between pin and rectification unit, it is provided with simulation heater chain, i.e. two simulation lamps Silk circuit is coupled with the pin at LED daylight lamp two end and two rectification units respectively.

As shown in figure 3g, be the LED daylight lamp of this utility model the 7th preferred embodiment circuit diagram.With Fig. 3 f's Difference is, embodiment adds two simulation heater chains 570, the two of this two simulations each self-contained series connection of heater chain 570 Resistance 573 (3rd resistor) and 574 (the 4th resistance), and series connection electric capacity 571 (the second electric capacity) and 572 (the 3rd electric capacity), And the junction point of this two resistance 573 and 574 couples the junction point of this two electric capacity 571 and 572.When light-emitting diode lamp tube is installed on Have preheating function tube face when (for example：There is the tube face of electric ballast), in warm, the electric current of AC signal This resistance 573 and 574, this electric capacity 571 and 572 of this two simulations heater chain 570 can be flowed through, and reach the effect of simulation filament Really.So, electric ballast can normally spend the filament pre-heating stage on startup, and ensures that electric ballast normally starts.

In one embodiment, described rectification unit, described inductance and described overflowing suppression circuit are arranged at described LED In the lamp holder of daylight lamp.At least one LED element described and described first electric capacity are arranged on the lamp plate of described LED daylight lamp.

In one embodiment, described rectification unit, described inductance and described filament analog circuit are arranged at described LED In the lamp holder of daylight lamp.At least one LED element described and described first electric capacity are arranged on the lamp plate of described LED daylight lamp.

Wherein, lamp plate is flexible circuit board, and power module adopts hard circuit board (pcb board)；Electricity is realized by welding Gas connects.

Inventor finds in the scheme of propulsion such as Fig. 3 e-3g, though the program effectively reduces being applied to and some towns During stream device coupling, the noise problem of ballast.But the program, due to all introducing inductance 635, the usual inductance 635 selected Weight is heavier.

If this inductance 635 is used in using in the LED daylight lamp as lamp panel structure (lamp plate is soft) for the flexible PCB, Bring extreme difficulties during post-production LED daylight lamp, increase the difficulty manufacturing；

If being arranged on inductance 635 on the power panel of power supply 5, according to the topological project of Fig. 3 e-3g, the power panel of power supply 5 Generally it is attached by way of welding with lamp plate, such welding implementation, power panel needs arrange 3 pad (lamps It is provided with plate and corresponding be provided with 3 pads), these three pad design are used for electrical connection and are formed by light source 202 The positive pole on road, negative pole and ground connection；

If inductance 635 is respectively arranged between simulation heater chain 570 and rectification unit 510 (will inductance 635 be put into Before rectification unit 510), such topological circuit, when the electric current flowing through inductance 635 declines, inductance 635 produces reversely Voltage, forms branch road via light source 202 and carries out afterflow, the electric current that this passes through light source 202 is more much higher than be pre-designed. The power of LED daylight lamp is abnormal.

For this reason, embodiment of the present utility model is also further improved to the scheme of Fig. 3 e-3g.A kind of improvement is proposed Scheme be the 8th preferred embodiment as illustrated in figure 3h, LED daylight lamp 500 comprises：Rectification unit 510, LED module 530, time delay On-off circuit 1590 and simulation heater chain 570.

In other embodiments, LED daylight lamp 500 can could be used without simulating the scheme of heater chain 570 (with carrying mould The LED daylight lamp intending heater chain 570 is compared, and differs only in the program and may not apply to compatible PS ballast occasion).

Rectification unit 510 is electrically connected with pin 501/502 and the pin 503/504 of this LED daylight lamp, in order to by coupling The AC rectification connecing the ballast output of this pin is unidirectional current.This ballast is electronic ballast (alternatively inductance type Ballast).In the embodiment having, the situation using only one of which pin on the side lamp holder of LED daylight lamp is also had (and to connect Foot 501/502 merges into a pin, or 503/504 merges into a pin).

In the present embodiment, delay switch circuit 1590, the same such scheme of function of this circuit are also comprised, here is no longer heavy Multiple description.In other embodiments, also can be substituted with the control circuit 2590 in above-described embodiment scheme.

It is respectively equipped with inductance 3631 (the first inductance), inductance 3632 between rectification unit 510 and simulation heater chain 570 (the second inductance) and inductance 3633 (the 3rd inductance), the branch road that inductance 3634 (the 4th inductance) series connection is formed.In inductance 3631, electricity Sense 3632, inductance 3633, inductance 3634 has been parallel with the diode 3635 (the first diode) of afterflow effect, diode respectively 3636 (the second diodes), diode 3637 (the 3rd diode), diode 3638 (the 4th diode).In inductance 3631 and electricity The branch road of sense 3632 diode in parallel respectively 3635 and the opposite polarity of diode 3636；In inductance 3633 and inductance 3634 Branch road diode in parallel respectively 3637 and the opposite polarity of diode 3638.The advantage of so design is：

So that the electric current of ballast (not shown) output flows through pin 501 and 502 as a example (electric current of ballast output flows through and connects Foot 503 and 504 side mechanism are similar to therewith), electric current flows through warp after inductance 3632 and then rectified unit 510 through diode 3635 LED module 530, switch 1591, through diode 3637, inductance 3634, flow out from pin 503 and 504.When electric current reduces (or flow direction Change), inductance 3632 produces backward voltage through diode 3636 afterflow, and such electric current does not flow through LED module 530, thus not The electric current of LED module 530 can be affected.

So design is advantageous in that,

1. adopt 4 small inductors (preferably, 4 small inductor inductance value are identical) to replace former inductance 635, power supply 5 can be optimized Volume.

②：Single inductance 635 before relatively, produces the angle of heat, dispersibles power supply 5 operationally inductance 5 from inductance The heat producing, thus improving the reliability of power supply 5, the heat part that power supply 5 work produces is via the setting on lamp holder WiFi shape louvre carry out (, the shape of right louvre can be also：Poroid, square shape, Xiao Lianzhuan, strip etc.) radiating, WiFi Shape hole also has exsiccation (by this hole is carried out with the steam suctioning out in LED fluorescent lamp tube of blowing/be evacuated) concurrently.

③：After the program, power supply 5 is relatively reliable with the connection of lamp plate (can to arrange a weldering in the power panel of power supply 5 Depending on disk and flexible light plate weld), the global reliability of LED daylight lamp 500 is improve compared with the structure of 3 pads.(reduce due to Pad rosin joint and the sparking arcing Probability that causes:Ibid, here no longer describes principle).

④：The electric current flowing through LED module 530 is basically unchanged, and power of lamp tube is identical with design power.

In other embodiments, simulation heater chain 570 can use other similar functions circuitry instead, as the above-mentioned Scheme using negative temperature coefficient resister etc..

Parameter declaration：

In such scheme, inductance 3631, inductance 3632, inductance 3633, the value of inductance 3634 is between 1mH～5mH；Preferably Choose 2mH～4mH；3mH is chosen in the present embodiment.

Diode 3635, diode 3636, diode 3637, the pressure voltage of diode 3638 between 200V～700V, relatively Good chooses 600V in 300V～600V, the present embodiment.In addition, this diode can to choose forward voltage drop less by (usual two Pole pipe forward voltage drop 0.7V, the present embodiment preferably chooses the diode that forward voltage drop is less than 0.7V, and such as forward voltage drop is 0.5V) two The type of pole pipe, to reduce the power consumption (or heating) in freewheeling period diode, improves its reliability.

As the deformation of such scheme, also can be respectively in the side pin 501 of LED daylight lamp and/or pin 502 and connect The Thermal Cutoffs adopting in setting such scheme on foot 503 and/or pin 504, to prevent LED daylight lamp in hot line job Strike sparks (having described that in the superincumbent embodiment of principle, here is not repeated).

As shown in figure 5, the deformation for simulation heater chain 570.It is a simulation heater chain 1960 topology as shown in Figure 5 a Illustrate, this simulation heater chain 1960 comprise resistance 1963 (the 5th resistance) and series connection electric capacity 1961 (the 4th electric capacity) and 1962 (the 5th electric capacity), and the series arm of this electric capacity 1961 and 1962 is in parallel with resistance 1963.

It is that a simulation heater chain 1660 topology is illustrated as shown in Figure 5 b, this simulation heater chain 1660 comprises resistance 1665 (the 6th resistance) and electric capacity 1663 (the 6th electric capacity), and this resistance 1665 and electric capacity 1663 parallel connection.

In preferred embodiment, the two-sided of printed circuit board is equipped with electronic building brick.Rectification unit 510, filter unit Part or all of circuit in 520 grade circuit includes dual inline type (DIP, dual inline-pin) package assembling.These Dual-inline package assembly, in left side and/or right side printed circuit board, is arranged on the same side；In addition, left side and/or right side Printed circuit board may also set up the assembly of non-dual-inline package.Due to the higher dual-inline package assembly of component height It is arranged at the same side, can effectively reduce the printed circuit board whole height that assembly is set.

In another embodiment, the component height that can be arranged at printed circuit board (PCB) is classification foundation.Group on printed circuit board (PCB) Part height is higher than that the assembly unification of a predetermined altitude value is arranged at the same side；And the setting of other assembly does not then limit, and also may be used In the same side.

Because lamp holder 3 is provided with air-vent, the heat produced by these electronic building bricks in lamp holder can be made can to pass through thoroughly Pore carries out heat loss through convection.Preferably, the material of fluorescent tube is glass.The conduction of heat of glass material is better than plastic material.LED element 202 when being affixed on tube inner wall, and the LED element 202 produced heat that works can be radiated through glass tubing conduction, or even Heat produced by LED element 202 can also carry out right radiating through air-vent simultaneously.Or blown out by this louvre or Suction out the steam in LED daylight lamp.

As described above, this utility model complies fully with patent three important document：Practicality in novelty, creativeness and industry. This utility model is hereinbefore disclosed with preferred embodiment, is so familiar with the technology person and should be understood that this embodiment is only used In description this utility model, and it is not construed as limiting scope of the present utility model.It should be noted that such as with this embodiment etc. The change of effect and displacement, all should be set to be covered by category of the present utility model.Therefore, protection domain of the present utility model when with Appending claims institute confining spectrum is defined.

Claims

1. a kind of LED daylight lamp is it is characterised in that include：

Rectification unit, described rectification unit is electrically connected with the pin being arranged at described LED daylight lamp end, will couple this pin Ballast output AC rectification become unidirectional current；

LED module, described LED module is electrically connected with described rectification unit；Described LED module includes at least one LED element structure Become branch road and

Inductance, it can suppress the current break in described LED module loop.

2. LED daylight lamp as claimed in claim 1 it is characterised in that：Described LED module also include with described at least one First electric capacity of the branch circuit parallel connection that LED element is constituted；Described first electric capacity is used for current stabilization and filtering.

3. LED daylight lamp as claimed in claim 1 or 2 it is characterised in that：Described inductance is in described LED module, described The branch road that inductance is constituted with least one LED element described is connected.

4. LED daylight lamp as claimed in claim 3 it is characterised in that：The inductance value of described inductance is 1mH to 10mH.

5. LED daylight lamp as claimed in claim 3 it is characterised in that：Described inductance in parallel has a diode (635), and described two The opposite polarity of the branch road that pole pipe is constituted with described LED element, for described inductance afterflow.

6. LED daylight lamp as claimed in claim 3 it is characterised in that：Described LED module also includes：

Overflowing suppression circuit；Described overflowing suppression circuit includes audion (638), first resistor (636), second resistance (637)； The base stage of described audion (638) and colelctor electrode are connected respectively to the two ends of described inductance (635), described audion (638) Colelctor electrode is connected to the cathode terminal of described LED element (632), in base stage and inter-collector and the base of described audion (638) Pole is respectively equipped with described first resistor (636), second resistance (637) with transmitting interpolar, and the emitter stage of described audion (638) is even It is connected to the built-in MOSFET drain electrode end (DRN end) of the IC module (2591) of described LED daylight lamp.

7. LED daylight lamp as claimed in claim 6 it is characterised in that：Described rectification unit, described inductance and the suppression of described excessively stream Circuit processed is arranged in the lamp holder of described LED daylight lamp；At least one LED element described and described first electric capacity are arranged at described On the lamp plate of LED daylight lamp.

8. LED daylight lamp as claimed in claim 2 is it is characterised in that also include：

It is coupled to the simulation heater chain between described pin and described rectification unit；Described simulation heater chain is used in preheating Stage supplies the alternating current of ballast output through to simulate filament.

9. LED daylight lamp as claimed in claim 8 it is characterised in that：Described inductance be coupled to described simulation heater chain with Between described rectification unit.

10. LED daylight lamp as claimed in claim 9 it is characterised in that：Described simulation heater chain has two, described whole Stream unit has two；Described two simulation heater chain pin and the described two rectification lists with described LED daylight lamp two end respectively Unit couples.

11. LED daylight lamp as claimed in claim 10 it is characterised in that：Described inductance include the first inductance (3631), second Inductance (3632), the 3rd inductance (3633), the 4th inductance (3634)；

It is provided with the first inductance (3631) connected and the between described rectification unit simulation described with heater chain Two inductance (3632)；Another described rectification unit be provided with the 3rd inductance connected another described between analog circuit And the 4th inductance (3634) (3633)；

Described first inductance in parallel have have afterflow effect the first diode (3635), described second inductance in parallel have have continuous Second diode (3636) of stream effect, described 3rd inductance in parallel has the 3rd diode (3637) with afterflow effect, institute Stating the 4th inductance in parallel has the 4th diode (3638) with afterflow effect；Described first diode (3635) and described second The opposite polarity of diode (3636)；Described 3rd diode (3637) and the opposite polarity of described 4th diode (3638).

12. LED daylight lamp as claimed in claim 11 it is characterised in that：Described first inductance, the second inductance, the 3rd inductance, The inductance value of the 4th inductance is 1mH to 5mH.

13. LED daylight lamp as claimed in claim 12 it is characterised in that：Described first inductance, the second inductance, the 3rd inductance, The inductance value of the 4th inductance is identical.

14. LED daylight lamp as claimed in claim 11 it is characterised in that：Described rectification unit, described inductance and described filament Analog circuit is arranged in the lamp holder of described LED daylight lamp；At least one LED element described and described first electric capacity are arranged at institute State on the lamp plate of LED daylight lamp.

15. LED daylight lamp as claimed in claim 1 it is characterised in that：At least one described pin string is provided with Temperature protection Silk.

16. LED daylight lamp as claimed in claim 15 it is characterised in that：The temperature threshold scope of described Thermal Cutoffs is situated between In 130 degree to 140 degree.