CN206542594U - It is a kind of effectively to weaken the high-voltage LED light bar of stroboscopic phenomenon - Google Patents

It is a kind of effectively to weaken the high-voltage LED light bar of stroboscopic phenomenon Download PDF

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Publication number
CN206542594U
CN206542594U CN201720068650.9U CN201720068650U CN206542594U CN 206542594 U CN206542594 U CN 206542594U CN 201720068650 U CN201720068650 U CN 201720068650U CN 206542594 U CN206542594 U CN 206542594U
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led
voltage
circuit
light bar
led light
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CN201720068650.9U
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刘健群
文勇
文应武
刘念白
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ZHONGSHAN MLIGHT PHOTOELECTRIC CO Ltd
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ZHONGSHAN MLIGHT PHOTOELECTRIC CO Ltd
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Abstract

The utility model offer is a kind of can effectively to weaken the high-voltage LED light bar of stroboscopic phenomenon, including rectification circuit, filter circuit and LED circuit, wherein, filter circuit includes filter capacitor and bleeder resistance, it is connected to after filter capacitor and bleeder resistance are in parallel in the output end of rectification circuit, the two ends of filter capacitor form the output end of filter circuit, and the output end connection of LED circuit input and filter circuit is met between the input voltage Vi of rectification circuit and the output voltage V1 of filter circuit:1.15Vi≤V1≤1.41Vi.The pulsating direct current exported using the charge-discharge characteristic of filter capacitor to rectification circuit is filtered to obtain smoother pulsating direct current, the voltage at the individual two ends of the LED in LED circuit is set to be more than its rated voltage, each LED individuals Chang Liang, weaken the stroboscopic phenomenon of high-voltage LED light bar, improve light efficiency, increase the working life of LED individuals, it is simple in construction, it is with low cost, install and easy to maintenance.

Description

It is a kind of effectively to weaken the high-voltage LED light bar of stroboscopic phenomenon
Technical field
The utility model is related to lighting field, more particularly to a kind of high-voltage LED light bar without stroboscopic.
Background technology
High-voltage LED light bar is easy to use due to its soft flexible, and length is even longer and can be with up to hundred meters One meter or 0.5 meter is that unit length can arbitrarily be cut, easy using power cheap, compact, straight cutting civil power of power line Install, therefore it has obtained application widely in city lighting and household beautification finishing.Existing high-voltage LED light bar includes Rectified current and LED circuit, rectification circuit become the rectified bridge rectification of AC220V/50Hz civil power DC200V/100Hz list Powered to pulsating dc voltage to LED circuit, Fig. 1 shows the voltage oscillogram after rectifier circuit rectifies.If LED circuit includes The LED individuals of dry electrical connection, when the DC voltage that rectifier bridge is exported is more than LED rated voltage Vf values, lamp bead is lighted, instead Then lamp bead extinguish;I.e. only Fig. 1 crest near tops it is a bit of it is interval in just have in LED lamp bead electric current by and send out Light, and other time section lamp bead is non-luminous.Thus, it can be known that existing high-voltage LED light bar is actually with 100Hz frequencies Flickering change, only because human eye has visual persistence effect, the people when the frequency that this light and shade changes is more than 24Hz Eye can not differentiate, then it is considered that it is seen that one at every moment put light yellow light bar.But this pulse DC electricity is right LED impact is big, and LED can influence its working life ceaselessly working for a long time under " on-off " state, and the light of this flicker Also have an impact to human eye.Therefore increasingly attracted attention without stroboscopic/weak stroboscopic high-pressure lamp band.Without stroboscopic/weak stroboscopic high-pressure lamp band It is required that the magnitude of voltage at supply LED two ends is not less than rated voltage Vf values, thus need output voltage further to rectification circuit It is filtered, it is ensured that the input high pressure of LED circuit is smoother.
Three kinds of methods can export smoother DC voltage with except stroboscopic below.The first is using linear DC voltage stabilizing electricity Source obtains smooth low-voltage DC supply to eliminate stroboscopic, i.e., by civil power by transformer pressure-reducing, rectification, filtering, voltage stabilizing and obtain The smooth low-voltage dc power supply of LED operation must be applied to.But for linear power supply, its transformer when being inputted with civil power Head with electric capacity is all than larger;The big efficiency of other linear power supply power consumption is low, is suitable only for powering for low power consuming devices;For high pressure Linear power supply is substantially unable to do what one wishes for light bar needs the power supply of 500W ∽ 1000W capacity.Second is to use Switching Power Supply, its Workflow is:Switching Power Supply is to vibrate the high voltage direct current after civil power (50Hz) rectifying and wave-filtering through switching tube to be reverse into high frequency (70KHz) High Level AC Voltage, is depressured into high frequency low voltage alternating current, then obtain smoother by rectifying and wave-filtering through switch transformer Low-voltage DC supply load.Switching Power Supply has the advantages that small volume, small power consumption, in the market using switch more than low-pressure lamp band Power supply is powered.But also increase as the length of light bar increases its line drop, it may appear that light bar front end is brighter and tail end is dark Phenomenon, moreover 24V/500W Switching Power Supply price is at more than 500 yuan in the market, about 1200 cubic centimetres of volume, this and I Requirement to cost and overall volume still have very big gap.The third is to use constant-current supply, in the market absolutely mostly Number LED lamps are all that but the design of constant-current source is an electric current by driving power supply to LED lamp bead provides constant current come work Specification only coordinates the light bar of certain length specification, and designs the constant-current source of many different current specifications to tackle different length specification Light bar be unpractical scheme for ordinary consumer, and the use of constant-current source can increase high-voltage LED light bar and install and tie up The difficulty of shield.
Utility model content
The utility model offer is a kind of can effectively to weaken the high-voltage LED light bar of stroboscopic phenomenon, to solve in the prior art The problem of rectification circuit and filter circuit volume are big, cost is high.
What the technical solution of the utility model was realized in:
The utility model can effectively weaken the high-voltage LED light bar of stroboscopic phenomenon, including rectification circuit, filtering there is provided a kind of Circuit and LED circuit, it is characterised in that:The filter circuit includes filter capacitor and bleeder resistance, the filter capacitor and lets out Put and be connected to after resistor coupled in parallel in the output end of rectification circuit, the two ends of the filter capacitor form the output end of filter circuit, The output end connection of the LED circuit input and filter circuit, the input voltage Vi of the rectification circuit and filter circuit Met between output voltage V1:1.15Vi≤V1≤1.41Vi.
LED circuit described above includes the civil power nominal load group and dividing load group of series connection, civil power nominal load group two The voltage V2=Vi at end, the civil power nominal load group includes some LED individuals being electrically connected to each other.
Civil power nominal load group described above includes several parallel with one another or series connection LED units, each LED unit bag Include some LED individuals being electrically connected to each other.
LED unit described above also includes some current-limiting resistances.
Dividing load group described above includes divider resistance.
Dividing load group described above includes LED bleeder circuits, and the LED bleeder circuits include the LED of some electrical connections Individual and the second current-limiting resistance.
LED circuit described above includes LED sub-circuits parallel with one another, and each LED sub-circuits include the city of series connection Electric nominal load group and the dividing load group.
The capacitance C of filter capacitor described above is:C >=0.289/ { f × (U/I) × ACv }, wherein, f is rectification circuit Pulse frequency, U be rectification circuit maximum output voltage, I be rectification circuit maximum output current, 0.1≤ACv≤0.2.
Filter capacitor described above is electrochemical capacitor, and the pressure voltage of filter capacitor is 400~450V.
Rectification circuit described above is bridge rectifier.
It is described in the utility model it is a kind of can effectively weaken the high-voltage LED light bar of stroboscopic phenomenon, have compared with prior art Advantages below:
1) pulsating direct current exported using the charge-discharge characteristic of filter capacitor to rectification circuit is filtered relatively is put down with obtaining Sliding pulsating direct current, it is simple in construction, it is with low cost, install and easy to maintenance, input voltage Vi and the filtering of the rectification circuit Met between the output voltage V1 of circuit:1.15Vi≤V1≤1.41Vi, makes the voltage at the individual two ends of the LED in LED circuit big In its rated voltage, each LED physical efficiency reaches Chang Liang state, weakens the stroboscopic phenomenon of high-voltage LED light bar, improves light Imitate, increase the working life of LED individuals.
2) because capacitor filtering can produce boosting, its output voltage is general to improve 20% or so compared with input voltage, And it is softer using the power supply characteristic of capacitor filtering, if being directly used in existing high-pressure lamp band, it certainly will cause to flow through the electricity of LED lamp bead Flow through big and make the too fast lost of life of its light decay, even directly burn out, along with general illumination circuit is in design using drop The inertial thinking of low input connection load, therefore, nobody uses the power supply plan of capacitor filtering in the market.This practicality It is new to eliminate everybody to the mistaken ideas in LED using capacitor filtering circuit, pass through and suitably increase LED circuit simultaneously Load, makes the operating voltage of LED circuit and the voltage that brings out of filter circuit match, and makes each LED individuals in LED circuit normal Work.
3) power-off post filtering electric capacity electric discharge, when the filter circuit output voltage is less than the operating voltage of the LED circuit When LED circuit end, but a large amount of electric energy also contained in filter capacitor do not release, now the filter capacitor and the bleeder resistance Between form a minor loop, the electricity of filter capacitor released by bleeder resistance, it is to avoid someone goes dismounting at once after a loss of power Light bar, touching light bar joint and be electrically shocked.
4) LED circuit includes civil power nominal load group and dividing load group, by increasing a dividing load group, makes The voltage V2=Vi at civil power nominal load group two ends, it is simple in construction, it is ensured that each LED individuals in civil power nominal load group are operated in Under normal condition, it is ensured that the working life of high-voltage LED light bar.
5) current value of the current-limiting resistance to adjust LED unit, it is to avoid the electric current for flowing through each LED individuals is excessive.
6) the dividing load group includes LED bleeder circuits, and LED bleeder circuits include the LED individuals of some electrical connections, should Design makes the light efficiency of high-voltage LED light bar stronger equivalent to one group of LED individual has been further added by.
Brief description of the drawings
Fig. 1 is the voltage oscillogram after rectifier circuit rectifies circuit rectifies in the prior art;
Fig. 2 is rectified current in the high-voltage LED light bar that can effectively weaken stroboscopic phenomenon that the utility model embodiment one is provided Road and the circuit theory diagrams of filter circuit;
Fig. 3 is filtered electrical in the high-voltage LED light bar that can effectively weaken stroboscopic phenomenon that the utility model embodiment one is provided The output voltage waveform on road;
Fig. 4 is LED circuit in the high-voltage LED light bar that can effectively weaken stroboscopic phenomenon that the utility model embodiment one is provided Circuit theory diagrams;
Fig. 5 is preference in the high-voltage LED light bar that can effectively weaken stroboscopic phenomenon that the utility model embodiment one is provided LED circuit schematic diagram;
Fig. 6 is LED circuit in the high-voltage LED light bar that can effectively weaken stroboscopic phenomenon that the utility model embodiment two is provided Circuit theory diagrams;
Fig. 7 is LED circuit in the high-voltage LED light bar that can effectively weaken stroboscopic phenomenon that the utility model embodiment three is provided Circuit theory diagrams.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Based on the implementation in the utility model Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to The scope of the utility model protection.
Embodiment one:
Rectification circuit and filtered electrical in the high-voltage LED light bar that can effectively weaken stroboscopic phenomenon that Fig. 2 provides for the present embodiment The circuit theory diagrams on road;Filter circuit in the high-voltage LED light bar that can effectively weaken stroboscopic phenomenon that Fig. 3 provides for the present embodiment Output voltage waveform;LED circuit in the high-voltage LED light bar that can effectively weaken stroboscopic phenomenon that Fig. 4 provides for the present embodiment Circuit theory diagrams;The LED electricity of preference in the high-voltage LED light bar that can effectively weaken stroboscopic phenomenon that Fig. 5 provides for the present embodiment Road schematic diagram.
As shown in Figures 2 to 4, the present embodiment provide it is a kind of can effectively weaken the high-voltage LED light bar of stroboscopic phenomenon, including Rectification circuit 1, filter circuit 2 and LED circuit, it is characterised in that:The filter circuit 2 includes filter capacitor C1 and bleeder resistance It is connected to after RX, the filter capacitor C1 and bleeder resistance RX are in parallel in output end O1, O2 of rectification circuit 1, the filtered electrical The two ends for holding C1 form output end O3, O4 of filter circuit 2, described LED circuit input I3, I4 and filter circuit 2 output O3, O4 connection are held, is met between the input voltage Vi of the rectification circuit 1 and the output voltage V1 of filter circuit 2:1.15Vi≤ V1≤1.41Vi。
The pulsating direct current exported using filter capacitor C1 charge-discharge characteristic to rectification circuit 1 is filtered relatively to be put down with obtaining Sliding pulsating direct current, it is simple in construction, it is with low cost, install and easy to maintenance, input voltage Vi and the filtering of the rectification circuit 1 Met between the output voltage V1 of circuit 2:1.15Vi≤V1≤1.41Vi, makes the LED individuals LED1 ... LEDn two in LED circuit The voltage at end is more than its rated voltage, and each LED individuals LED1 ... LEDn can reach Chang Liang state, improve light efficiency, weaken The stroboscopic phenomenon of high-voltage LED light bar, increases the working life of LED individuals.Post filtering electric capacity C1 electric discharges are powered off, when the filtering The output voltage V1 of circuit 2 is less than the LED circuit cut-off during operating voltage of the LED circuit, but is also stored up in filter capacitor C1 There are a large amount of electric energy not release, a minor loop, filtered electrical are now formed between the filter capacitor C1 and the bleeder resistance RX Hold C1 electricity released by bleeder resistance RX, it is to avoid someone go at once after a loss of power lamp removal band, touching light bar joint and by Electric shock.
LED circuit described above includes the civil power nominal load group 31 and dividing load group 32 of series connection, civil power nominal load The voltage V2=Vi at 31 two ends of group, the civil power nominal load group 31 includes some LED individuals LED1 ... being electrically connected to each other LEDn。
The utility model is by increasing dividing load group 32 so that the input voltage V2=Vi of civil power nominal load group 31, really Each LED individuals work protected in civil power nominal load group 31 is in normal state, it is ensured that the working life of high-voltage LED light bar.
Civil power nominal load group 31 described above includes the LED unit 4 that several are serially connected, and each LED unit 4 includes Some LED individuals LED1 ... LEDn1 being electrically connected to each other.
LED unit 4 described above also includes some current-limiting resistance R1 ... Rn.Current-limiting resistance R1 ... Rn is mono- to adjust LED The current value of member 4, it is to avoid the electric current for flowing through each LED individuals LED1 ... LEDn1 in LED unit 4 is excessive.
Structure in LED unit 4 described above can be serially connected for the individual and described current-limiting resistances of multiple LED, Can for multiple LED individuals it is in parallel after a variety of connected modes such as connected with the current-limiting resistance, in the utility model not one by one Thin row.
Dividing load group 32 described above includes divider resistance Rf.Divider resistance Rf can be single resistance, or multiple Resistance electrical connection composition.
Filter capacitor C1 described above capacitance C is:C >=0.289/ { f × (U/I) × ACv }, wherein, f is rectified current The input voltage Vi of road 1 pulse frequency, U is the maximum output voltage of rectification circuit 1, and I is the maximum output current of rectification circuit 1,0.1 ≤ACv≤0.2。
Filter capacitor C1 described above is electrochemical capacitor, and the pressure voltage of filter capacitor is 400~450V.
Rectification circuit 1 described above is bridge rectifier.Input I1, I2 of the rectification circuit 1 are electrically connected with city, The input voltage Vi of rectification circuit is 220V, 110V or other civil power.
As shown in figure 5, as preference, the LED circuit includes LED sub-circuits 5 parallel with one another, each LED electricity Road 5 includes the civil power nominal load group 31 and the dividing load group 32 of series connection.
Embodiment two:
The circuit theory of LED circuit in the high-voltage LED light bar that can effectively weaken stroboscopic phenomenon that Fig. 6 provides for the present embodiment Figure.
As shown in fig. 6, a kind of of the present embodiment offer can effectively weaken the high-voltage LED light bar of stroboscopic phenomenon, with embodiment The high-voltage LED light bar structure that can effectively weaken stroboscopic phenomenon described in one is similar, and difference is:
The dividing load group 32 includes LED bleeder circuits, and the LED bleeder circuits include LED of some electrical connections Body LEDa ... LEDan and the second current-limiting resistance R a.
LED bleeder circuits in the present embodiment on the basis of civil power nominal load group 31 equivalent to adding one group of LED Individual LEDa ... LEDan, makes whole high-voltage LED light bar brightness higher.
Embodiment three:
The circuit theory of LED circuit in the high-voltage LED light bar that can effectively weaken stroboscopic phenomenon that Fig. 7 provides for the present embodiment Figure.
As shown in fig. 7, a kind of of the present embodiment offer can effectively weaken the high-voltage LED light bar of stroboscopic phenomenon, with embodiment The high-voltage LED light bar structure that can effectively weaken stroboscopic phenomenon described in one is similar, and difference is:
Civil power nominal load group 31 described above includes several LED units 4 parallel with one another, and each LED unit 4 includes Some LED individual LED1 ... LEDn1 and some current-limiting resistance R1 ... Rn being electrically connected to each other.
Finally it should be noted that:Above example is only to illustrate the technical solution of the utility model, rather than its limitations; Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that: It can still modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc. With replacement;And these modifications or replacement, the essence of appropriate technical solution is departed from each embodiment technology of the utility model The spirit and scope of scheme.

Claims (10)

1. a kind of can effectively weaken the high-voltage LED light bar of stroboscopic phenomenon, including rectification circuit, filter circuit and LED circuit, it is special Levy and be:The filter circuit includes filter capacitor and bleeder resistance, is connected to after the filter capacitor and bleeder resistance are in parallel In the output end of rectification circuit, the two ends of the filter capacitor form the output end of filter circuit, the LED circuit input with The output end connection of filter circuit, meets between the input voltage Vi of the rectification circuit and the output voltage V1 of filter circuit: 1.15Vi≤V1≤1.41Vi。
2. a kind of the high-voltage LED light bar of stroboscopic phenomenon can be effectively weakened according to claim 1, it is characterised in that:It is described LED circuit includes the civil power nominal load group and dividing load group of series connection, the voltage V2=Vi at civil power nominal load group two ends, institute Stating civil power nominal load group includes some LED individuals being electrically connected to each other.
3. a kind of the high-voltage LED light bar of stroboscopic phenomenon can be effectively weakened according to claim 2, it is characterised in that:It is described Civil power nominal load group includes several parallel with one another or series connection LED units, and each LED unit includes some be electrically connected to each other LED individual.
4. a kind of the high-voltage LED light bar of stroboscopic phenomenon can be effectively weakened according to claim 3, it is characterised in that:It is described LED unit also includes some current-limiting resistances.
5. a kind of the high-voltage LED light bar of stroboscopic phenomenon can be effectively weakened according to claim 2, it is characterised in that:It is described Dividing load group includes divider resistance.
6. a kind of the high-voltage LED light bar of stroboscopic phenomenon can be effectively weakened according to claim 2, it is characterised in that:It is described Dividing load group includes LED bleeder circuits, and the LED bleeder circuits include the LED individuals and the second current limliting electricity of some electrical connections Resistance.
7. it is as claimed in any of claims 2 to 6 it is a kind of can effectively weaken the high-voltage LED light bar of stroboscopic phenomenon, its It is characterised by:The LED circuit includes LED sub-circuits parallel with one another, and each LED sub-circuits include the civil power volume of series connection Fixed load group and the dividing load group.
8. it is as claimed in any of claims 2 to 6 it is a kind of can effectively weaken the high-voltage LED light bar of stroboscopic phenomenon, its It is characterised by:The capacitance C of the filter capacitor is:C >=0.289/ { f × (U/I) × ACv }, wherein, f is rectification circuit Pulse frequency, U is rectification circuit maximum output voltage, and I is rectification circuit maximum output current, 0.1≤ACv≤0.2.
9. a kind of the high-voltage LED light bar of stroboscopic phenomenon can be effectively weakened according to claim 8, it is characterised in that:It is described Filter capacitor is electrochemical capacitor, and the pressure voltage of filter capacitor is 400~450V.
10. a kind of the high-voltage LED light bar of stroboscopic phenomenon can be effectively weakened according to claim 9, it is characterised in that:It is described Rectification circuit is bridge rectifier.
CN201720068650.9U 2017-01-18 2017-01-18 It is a kind of effectively to weaken the high-voltage LED light bar of stroboscopic phenomenon Active CN206542594U (en)

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CN201720068650.9U CN206542594U (en) 2017-01-18 2017-01-18 It is a kind of effectively to weaken the high-voltage LED light bar of stroboscopic phenomenon

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