CN203327341U - High efficiency LED power supply and LED light source comprising LED power supply - Google Patents
High efficiency LED power supply and LED light source comprising LED power supply Download PDFInfo
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- CN203327341U CN203327341U CN201320440578XU CN201320440578U CN203327341U CN 203327341 U CN203327341 U CN 203327341U CN 201320440578X U CN201320440578X U CN 201320440578XU CN 201320440578 U CN201320440578 U CN 201320440578U CN 203327341 U CN203327341 U CN 203327341U
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Abstract
The utility model provides a high efficiency LED power supply and an LED light source comprising the LED power supply, relates to an LED power supply and a light source, and aims at solving a problem that an LED lamp bar cannot be stably driven by a current power supply. The output end of the positive electrode of a rectifying unit of the LED power supply is connected with the positive electrode of a filtering capacitor and one end of a resistor R1, wherein the output end acts as one output end of the LED power supply. The output end of the negative electrode of the rectifying unit of the LED power supply is connected with the negative electrode of the filtering capacitor, the anode of a voltage-stabilizing tube, the anode of a control chip, one end of a resistor R2, one end of a resistor R3 and one end of a capacitor. The other end of the resistor R2 is connected with the other end of the resistor R1, the cathode of the voltage-stabilizing tube, the cathode of the control chip and the base electrode of a triode. The control electrode of a control chip U is connected with the emission electrode of the triode, the other end of the resistor R3 and the other end of the capacitor. The collection electrode of the triode acts as the other output end of the high efficiency LED power supply. An LED light-emitting body is embedded in a lamp cap of the LED light source. The LED power supply is fixed in a lamp base. The power supply end of the LED light-emitting body is connected with the output end of the LED power supply. The power supply is applied to drive the LED lamp bar.
Description
Technical field
The utility model relates to a kind of efficient LED power supply, relates in particular to a kind of LED power supply of LED luminous lamp strip.
Background technology
The LED power supply is all low-voltage, high-current schemes on the market, exists the loss of power supply self large, and whole efficiency is low, and the optoelectronic transformation efficiency of LED particle is low during large electric current, and a large amount of electric energy conversions are the heat energy problem.LED is all with DC driven, existing LED power supply majority sends out with resistance-capacitance depressurization or the Switching Power Supply mode drives, adopt after the high-frequency rectification of the higher-order of oscillation (50K-100KHZ) and produce the low-voltage, high-current direct current and be used for driving LED, existence is because electric current is large, the heating of LED is serious, itself also produces amount of heat the Simultaneous Switching power supply, the amount of heat that large electric current produces reduces the LED luminous efficiency greatly, and have a strong impact on the problem in the life-span of LED, also exist and must use aluminium base and very large aluminum alloy heat sink, do not meet the problem of the aim of low-carbon environment-friendly.Also exist a kind of LED luminescent lamp strip structure special, direct-current working volts are very high simultaneously, and reaching the 250VDC(civil power is 220VAC), the 125VDC(civil power is 110VAC), and working direct current is very little, single branch road is 10～20mA, the problem of the driving that current LED power supply all can not be effectively stable.
The utility model content
The utility model is for solving because a kind of LED luminescent lamp strip structure is special, the problem of the driving that current LED power supply can not be effectively stable, and then a kind of efficient LED power supply of this lamp bar and LED light source that contains this LED power supply of being applicable to proposed.
Efficient LED power supply described in the utility model, it comprises rectification unit, filter capacitor, voltage-stabiliser tube, resistance R 1, resistance R 2, resistance R 3, control chip, triode and electric capacity;
The ac power input end that the AC signal input of rectification unit is the efficient LED power supply, the direct current signal cathode output end of described rectification unit connects the positive pole of filter capacitor and an end of resistance R 1 simultaneously, this direct current signal cathode output end is as an output of efficient LED power supply, the direct current signal cathode output end of rectification unit connects the negative pole of filter capacitor simultaneously, the anode of voltage-stabiliser tube, one end of resistance R 2, the anode of control chip, one end of electric capacity and an end of resistance R 3, the other end of described resistance R 2 is the other end of contact resistance R1 simultaneously, the negative electrode of voltage-stabiliser tube, the base stage of the negative electrode of control chip and power tube triode, the control utmost point of described control chip connects the other end of electric capacity simultaneously, the emitter of the other end of resistance R 3 and power tube triode, the current collection of described power tube triode is another output of efficient LED power supply very.
The LED light source that contains above-mentioned LED power supply described in the utility model, described LED light source comprises lamp socket and lamp holder, described lamp holder has been embedded in the LED luminous element, be fixed with the LED power supply in described lamp socket, the LED luminous element is connected between two outputs of described LED power supply, described LED luminous element is formed by a paths of LEDs lamp bar branch road or multi-way LED lamp bar branch circuit parallel connection, and described LED lamp bar props up that four described LED lamp bars of route are in series or two described LED lamp bars are in series.
The operation principle of efficient LED power supply described in the utility model is as follows:
During this power work, under applicable alternating voltage operating mode, alternating current is through the rectification unit rectification, then via capacitor filtering, voltage-stabiliser tube and two resistance are converted into stable direct voltage within the specific limits by the direct voltage of rectification unit output and offer the use of voltage stabilizing chip, the voltage stabilizing chip is in applicable voltage ripple of power network scope, reference voltage that all can stable output is 2.5V, be the terminal voltage of constant current resistance, utilize the pressure drop that detects two ends to control the switch of voltage stabilizing chip, thereby the switch of recycling voltage stabilizing chip comes the conducting of power ratio control pipe triode to reach the purpose of output constant current, the electric current constant current value is 2.5/R3, described R1, operating voltage and the operating current of the selective basis voltage stabilizing chip of R2 are chosen.
According to different Design of Luminaires, it is single branch road that the power output of this power supply can drive the lamp bar from 1W(, 2 wall scroll series connection, 100VDC operating voltage, 10mA operating current) to 25W(driving lamp bar, be 5 branch roads, 4 wall scroll series connection, the 250VDC operating voltage, the 100mA operating current), under different power outputs and electric pressure condition, the parameter that needs corresponding regulating power pipe triode Q1 and constant current resistance R3, so that power supply can continue reliably working.
The advantage of the heat dissipating method of efficient LED power supply described in the utility model and power tube triode thereof has:
1, efficient LED power-efficient described in the utility model is high, reaches more than 90%, applied widely, and the scope of application is 100～242VAC, in the situation that voltage ripple of power network ± 10% can guarantee 100% specified output.
2, the driving power that efficient LED power acquisition described in the utility model is used is the high-efficiency constant-flow source, and can export different stable DC electric currents according to different LED encapsulation particles, the parameter of the resistance R 3 of adjusting power supply and the parameter of power tube triode can obtain different stabling current output.This LED power supply galvanic current stream output area is: 0～100mA.
3, in all applicable voltage ranges, the current precision of this power supply output reaches ± and 3%.Under the rated voltage operating mode, the current precision of this power supply output reaches ± and 1%, reach 50000 hours the useful life of this power supply.
4, the power tube triode of efficient LED power supply described in the utility model is not used aluminium base and very large aluminum alloy heat sink heat radiation, meets the aim of low-carbon environment-friendly.
5, the applicable LED lamp bar of this efficient LED power supply, can 360 ° of omniranges luminous, at utmost utilize natural heat dissipation, the visible ray utilance that makes LED is 100%.
The accompanying drawing explanation
The circuit theory diagrams that Fig. 1 is this novel described efficient LED power supply,
Fig. 2 is the structural representation of this novel described LED light source that contains this LED power supply,
The radiator structure schematic diagram that Fig. 3 is the power tube triode in this novel described efficient LED power supply.
Embodiment
Embodiment one: in conjunction with Fig. 1, present embodiment is described, the described efficient LED power supply of present embodiment, comprise rectification unit, filter capacitor Ce1, voltage-stabiliser tube ZD1, resistance R 1, resistance R 2, resistance R 3, control chip U, triode Q1 and capacitor C 1;
The ac power input end that the AC signal input of rectification unit is the efficient LED power supply, the direct current signal cathode output end of described rectification unit connects the positive pole of filter capacitor Ce1 and an end of resistance R 1 simultaneously, this direct current signal cathode output end is as an output of efficient LED power supply, the direct current signal cathode output end of rectification unit connects the negative pole of filter capacitor Ce1 simultaneously, the anode of voltage-stabiliser tube ZD1, one end of resistance R 2, the anode of control chip U, one end of capacitor C 1 and an end of resistance R 3, the other end of described resistance R 2 is the other end of contact resistance R1 simultaneously, the negative electrode of voltage-stabiliser tube ZD1, the base stage of the negative electrode of control chip U and power tube triode Q1, the control utmost point of described control chip U connects the other end of capacitor C 1 simultaneously, the emitter of the other end of resistance R 3 and power tube triode Q1, the current collection of described power tube triode Q1 is another output of efficient LED power supply very.
In described efficient LED power supply, the radiating mode of power tube triode can adopt radiator structure as shown in Figure 3, that is: on printed circuit board (PCB) 6 with the heat radiation Copper Foil 5, the heat radiation Copper Foil 5 of the radiating surface next-door neighbour printed circuit board (PCB) 6 of described power tube triode Q1, and be filled with heat-conducting silicone grease 4 between power tube triode Q1 and printed circuit board (PCB) 6 heat radiation Copper Foils 3.Adopt this kind of radiating mode can realize the good heat radiating to pliotron fully, this kind of radiating mode compared with the existing radiating mode of aluminium base and very large aluminum alloy heat sink that uses, and has advantages of that volume is little.
Embodiment two: the difference of present embodiment and the described efficient LED power supply of embodiment one is, described rectification unit is full bridge rectifier, and the model of described control chip U is TL432.
Embodiment three: present embodiment is described in conjunction with Fig. 1, the difference of present embodiment and the described efficient LED power supply of embodiment one is, described rectification unit is by a diode D1, No. two diode D2, No. three diode D3 and No. four diode D4 form, after the negative electrode of the anode of a described diode D1 and No. two diode D2 is connected as an AC signal input of this rectification unit, after the negative electrode of the anode of described No. three diode D3 and described No. four diode D4 is connected as another AC signal input of this rectification unit, the negative electrode of a diode D1 connects after the negative electrode of No. three diode D3 the direct current signal cathode output end as described rectification unit, after the anode of No. four diode D4 of anodic bonding of No. two diode D2 as the direct current signal cathode output end of described rectification unit.
Embodiment four: in conjunction with Fig. 2, present embodiment is described, present embodiment is described is the structure of the LED light source that contains the described efficient LED power supply of embodiment one.As shown in Figure 2, described LED light source comprises lamp socket 2 and lamp holder, and lamp socket 2 is fixedly connected with lamp holder, and described lamp holder has been embedded in LED luminous element 3, in described lamp socket 2, is fixed with the LED power supply, and the feeder ear of LED luminous element 3 connects the power supply output of LED power supply.
Embodiment five: the difference of present embodiment and embodiment four described LED light sources is that described LED luminous element 3 consists of a paths of LEDs lamp bar branch road.
Embodiment six: the difference of present embodiment and embodiment four described LED light sources is that described LED luminous element 3 consists of multi-way LED lamp bar branch circuit parallel connection.
Embodiment seven: the difference of present embodiment and embodiment five and embodiment six described LED light sources is, it is in series that described LED lamp bar props up four described LED lamp bars 1 of route.
Embodiment eight: the difference of present embodiment and embodiment five and embodiment six described LED light sources is, it is in series that described LED lamp bar props up two described LED lamp bars 1 of route.
The radiator structure of power tube triode and the LED light source that contains this power supply in efficient LED power supply described in the utility model and this power supply, being not limited to the concrete structure that the respective embodiments described above are put down in writing, can also be the reasonable combination of the concrete technical characterictic put down in writing of the respective embodiments described above.
Claims (8)
1. the efficient LED power supply, is characterized in that, comprises rectification unit, filter capacitor (Ce1), voltage-stabiliser tube (ZD1), resistance R 1, resistance R 2, resistance R 3, control chip (U), triode (Q1) and electric capacity (C1);
The ac power input end that the AC signal input of rectification unit is the efficient LED power supply, the direct current signal cathode output end of described rectification unit connects the positive pole of filter capacitor (Ce1) and an end of resistance R 1 simultaneously, this direct current signal cathode output end is as an output of efficient LED power supply, the direct current signal cathode output end of rectification unit connects the negative pole of filter capacitor (Ce1) simultaneously, the anode of voltage-stabiliser tube (ZD1), one end of resistance R 2, the anode of control chip (U), one end of electric capacity (C1) and an end of resistance R 3, the other end of described resistance R 2 is the other end of contact resistance R1 simultaneously, the negative electrode of voltage-stabiliser tube (ZD1), the base stage of the negative electrode of control chip (U) and power tube triode (Q1), the control utmost point of described control chip (U) connects the other end of electric capacity (C1) simultaneously, the emitter of the other end of resistance R 3 and power tube triode (Q1), the current collection of described power tube triode (Q1) is another output of efficient LED power supply very.
2. efficient LED power supply according to claim 1, is characterized in that, described rectification unit is full bridge rectifier.
3. efficient LED power supply according to claim 1, it is characterized in that, described rectification unit is by a diode (D1), No. two diodes (D2), No. three diodes (D3) and No. four diodes (D4) form, after the negative electrode of the anode of a described diode (D1) and No. two diodes (D2) is connected as an AC signal input of this rectifier power source, after the negative electrode of the anode of described No. three diodes (D3) and described No. four diodes (D4) is connected as another AC signal input of this rectifier power source, the negative electrode of a diode (D1) connects after the negative electrode of No. three diodes (D3) the direct current signal cathode output end as described rectification unit, after the anode of No. four diodes of the anodic bonding of No. two diodes (D2) (D4) as the direct current signal cathode output end of described rectification unit.
4. the LED light source that contains LED power supply claimed in claim 1, it comprises lamp socket (2) and lamp holder, lamp socket (2) is fixedly connected with lamp holder, described lamp holder has been embedded in LED luminous element (3), it is characterized in that, described lamp socket is fixed with the LED power supply in (2), and the feeder ear of LED luminous element (3) connects the power supply output of LED power supply.
5. LED light source according to claim 4, is characterized in that, described LED luminous element (3) consists of a paths of LEDs lamp bar branch road.
6. LED light source according to claim 4, is characterized in that, described LED luminous element (3) consists of multi-way LED lamp bar branch circuit parallel connection.
7. according to the described LED light source of claim 5 or 6, it is characterized in that, it is in series that described LED lamp bar props up four LED lamp bars of route (1).
8. according to the described LED light source of claim 5 or 6, it is characterized in that, it is in series that described LED lamp bar props up two LED lamp bars of route (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320440578XU CN203327341U (en) | 2013-07-23 | 2013-07-23 | High efficiency LED power supply and LED light source comprising LED power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320440578XU CN203327341U (en) | 2013-07-23 | 2013-07-23 | High efficiency LED power supply and LED light source comprising LED power supply |
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| Publication Number | Publication Date |
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| CN203327341U true CN203327341U (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320440578XU Expired - Fee Related CN203327341U (en) | 2013-07-23 | 2013-07-23 | High efficiency LED power supply and LED light source comprising LED power supply |
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| CN (1) | CN203327341U (en) |
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- 2013-07-23 CN CN201320440578XU patent/CN203327341U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151021 Address after: Songbei Ju Bao road 150069 Heilongjiang city of Harbin province No. 588 city of Harbin science and technology innovation enterprise accelerator Building No. 7 Patentee after: Heilongjiang Tetong Electric Co., Ltd. Address before: Haping Road Development Zone in Harbin City, Heilongjiang province 150069 District Wenzhou Road No. 9-1 Patentee before: Li Guoyong |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Songbei Ju Bao road 150069 Heilongjiang city of Harbin province No. 588 city of Harbin science and technology innovation enterprise accelerator Building No. 7 Patentee after: Heilongjiang Tetong Electric Co., Ltd. Address before: Songbei Ju Bao road 150069 Heilongjiang city of Harbin province No. 588 city of Harbin science and technology innovation enterprise accelerator Building No. 7 Patentee before: Heilongjiang Tetong Electric Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20190723 |
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| CF01 | Termination of patent right due to non-payment of annual fee |