CN201887972U - Special power conversion circuit for LEDs - Google Patents
Special power conversion circuit for LEDs Download PDFInfo
- Publication number
- CN201887972U CN201887972U CN2010206401614U CN201020640161U CN201887972U CN 201887972 U CN201887972 U CN 201887972U CN 2010206401614 U CN2010206401614 U CN 2010206401614U CN 201020640161 U CN201020640161 U CN 201020640161U CN 201887972 U CN201887972 U CN 201887972U
- Authority
- CN
- China
- Prior art keywords
- circuit
- diode
- resistor
- capacitor
- led
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
A special power conversion circuit for LEDs comprises a rectifying conversion circuit composed of a current limiting rectifying circuit A, an efficiency circuit B and a voltage stabilizing protecting circuit C. The current limiting rectifying circuit comprises a bridge rectifying circuit, a resistor R1 and a capacitor C1, the bridge rectifying circuit consists of a rectifying diode, two poles led out of an alternating-current power supply AC are respectively connected with a connection point of a diode D4 with a diode D1 and a connection point of a diode D3 with a diode D2 in the bridge rectifying circuit, the capacitor C1 is serially connected into the connecting point which outputs power to the D4 and the D1 in the bridge rectifying circuit, the resistor R1 is connected to two ends of the capacitor C1 in parallel, the efficiency circuit B is a capacitor C2, the voltage stabilizing protecting circuit C consists of a voltage stabilizing tube T2, a resistor R2 and a resistor R3, and the efficiency circuit B and the voltage stabilizing protecting circuit C are respectively parallelly connected into two electrode wires which are led out from a connecting point of the diode D4 with the diode D3 and a connecting point of the diode D2 with the diode D1 in the bridge rectifying circuit and communicated with an LED light source.
Description
Technical field
The utility model relates to a kind of LED power source special change-over circuit, belongs to the rectifying conversion technology type.
Background technology
Along with the arrival in energy-saving low-carbon epoch, become the sign of lighting source of new generation as new type light source with led chip.Because the LED lighting has the factory director in useful life, start-up time is short, energy-saving effect is remarkable, do not have ultra-violet radiation and advantages such as environmental pollution, safety in utilization height, is approved widely, has become the main flow of following energy-saving lamp.But, because the LED lamp is photoelectric device, in its photoelectric conversion process, have only 15 ~ 25% electric energy to convert luminous energy to, remaining electric energy nearly all converts heat energy to, and the temperature of LED light fixture is raise.Therefore in present disclosed correlation technique, all by increase radiator structure in the LED lamp, expectation is helped heat radiation by the effect of radiator, in the hope of improving the useful life of LED luminescence chip.
According to for many years research of the utility model people, think that above-mentioned technological means has just solved the LED lamp and produced harmful heat energy and influence a reason of promoting the use of to LED lamp manufacturing technology.As the LED light fixture, especially high-power LED light fixture, influencing its Another reason of extensively promoting the use of is: the led chip luminescent device is a kind of direct current luminescent device, during use, the civil power that generally will exchange character is as habitual power supply, the civil power of 220/110V must be converted to the direct current that is fit to it and uses, and require voltage and current to have certain stability.The small increase of any operating voltage will cause the rapid increase (seeing shown in the accompanying drawing 2) of operating current, otherwise will cause burning of heating of LED light fixture and even whole light fixture.But the power-switching circuit or the converter circuitry of power of all at present LED illuminating lamps all are to adopt the inductive translation circuit.In order to reach the purpose of voltage stabilizing, current stabilization, the power-switching circuit of public use now not only fails to break away from the inductive translation circuit, and the composition of entire circuit is comparatively complicated, still can't really prevent and eliminate the generation of the problems referred to above.This not only influences design, the manufacturing cost of high-powered LED lamp, also is also to influence the true cause that LED enters into huge numbers of families' process simultaneously.
Summary of the invention
The purpose of this utility model: be intended to propose a kind of LED power source special change-over circuit that can effectively control LED lamp input power work electric current, thereby guarantee that the LED lamp can have the steady-working state of longer time.
This LED power source special change-over circuit is a rectification change-over circuit T who is made up of rectifier circuit current limiting A, synergy circuit B, protective circuit of voltage regulation C
1Rectifier circuit current limiting is wherein formed bridge rectifier, resistor R by four rectifier diodes
1, capacitor C
1, wherein the two poles of the earth of drawing by AC power AC respectively with bridge rectifier in diode D
4, diode D
1Contact, diode D
3, diode D
2Contact link to each other capacitor C
1Be connected on out-put supply D to the bridge rectifier
4, D
1Contact in, described resistor R
1Then be connected in parallel on capacitor C
1Two ends; Described synergy circuit B is by capacitor C
2Take on, described protective circuit of voltage regulation C is by voltage-stabiliser tube T
2, resistor R
2And resistor R
3Form voltage-stabiliser tube T wherein
2, resistor R
2Be connected in parallel in the output circuit of bridge rectifier resistor R
3Then be connected on diode T
2After the output circuit of bridge rectifier in; Described synergy circuit B also be connected in parallel on by in the bridge rectifier from diode D
4, diode D
3Contact and diode D
2, diode D
1Two contacts are drawn in two polar curves of led light source.
This LED power source special change-over circuit according to above technical scheme proposition, not only the member of the power supply changeover device of Zu Chenging is simple, and cost significantly lowers, and the Sasser that is pulsed through the power source voltage and the electric current of rectification output, belong to neither constant voltage, the also DC power supply of non-constant current, and capacitor C
1Big electric current restriction, make light fixture both can guarantee that the LED photophore was normally luminous, nor can make led chip impaired when voltage raises, the more important thing is: the power factor (PF) of the LED light fixture that this power supply constitutes is capacitive, can play the effect of compensation network.For preventing high-power LED lamp in use, the small increase of ubiquitous operating voltage will cause the rapid increase of operating current (seeing shown in the accompanying drawing 4), can cause the phenomenon of burning of heating of LED light fixture and even whole light fixture, is effectively overcome.
Description of drawings
Fig. 1 is the utility model power-switching circuit composition diagram;
Fig. 2 is LED operating voltage and current relationship curve chart;
Fig. 3 is for using output current wave figure of the present utility model;
Fig. 4 forms structural representation for using LED straight lamp of the present utility model;
Fig. 5 forms structural representation for using LED ball-type lamp of the present utility model.
Among the figure: 1-straight tube lampshade 2-LED chip 3-lamp base 4-power supply changeover device 5-lower house 6-air-vent 7-LED photophore 8-claw 9-thermal column 10-radiator 11-supply convertor 12-lamp holder 13-air-vent 14-upper shell 15-radiator retainer plate
A-rectifier circuit current limiting B-synergy circuit C-protective circuit of voltage regulation D-circuit of light sources T
1-unidirectional bridge rectifier T
2-voltage-stabiliser tube.
Embodiment
Further set forth the utility model below in conjunction with accompanying drawing 1, and provide embodiment of the present utility model.
This LED power source special change-over circuit that Fig. 1 provides is a rectification change-over circuit T who is made up of rectifier circuit current limiting A, synergy circuit B, protective circuit of voltage regulation C
1Rectifier circuit current limiting is wherein formed bridge rectifier, resistor R by four rectifier diodes
1, capacitor C
1, wherein the two poles of the earth of drawing by AC power AC respectively with bridge rectifier in diode D
4, diode D
1Contact, diode D
3, diode D
2Contact link to each other capacitor C
1Be connected on out-put supply D to the bridge rectifier
4, D
1Contact in, described resistor R
1Then be connected in parallel on capacitor C
1Two ends; Described synergy circuit B is by capacitor C
2Take on, described protective circuit of voltage regulation C is by voltage-stabiliser tube T
2, resistor R
2And resistor R
3Form voltage-stabiliser tube T wherein
2, resistor R
2Be connected in parallel in the output circuit of bridge rectifier resistor R
3Then be connected on diode T
2After the output circuit of bridge rectifier in; Described synergy circuit B also be connected in parallel on by in the bridge rectifier from diode D
4, diode D
3Contact and diode D
2, diode D
1Two contacts are drawn in two polar curves of led light source.
In described protective circuit of voltage regulation C, the diode T2 and the resistor R 2 that are connected in parallel in the output circuit of bridge rectifier play burning voltage, and the resistor R 3 that is connected in the output circuit of bridge rectifier then plays stabling current.
Above-mentioned this LED power source special change-over circuit, it is a kind of bold innovation to the various power-switching circuits that generally use now.This circuit is directly used a bridge rectifier and is realized that alternating current is to galvanic conversion, and utilize and to be connected on alternating current input power supplying and the current stabilization capacitor of a resistor in parallel again at two ends, the constant current constant voltage of realization AC power is just handled, and is in parallel in regular turn by a capacitor C in the bridge rectifier output circuit again subsequently
2The protective circuit of taking on, and the voltage stabilizing circuit of taking on by diode T2 and resistance R 2.The final power supply that guarantees input LED illumination thus has the constant current constant voltage performance.
Because the components and parts of this power-switching circuit are few, therefore simple, the low cost of manufacture of parts in actual applications, and shared space is also minimum, this has just created advantage for the manufacturing cost that reduces the LED illuminating lamp on the whole, can be widely used in the design of the power circuit of various types of LED lightings or supply convertor.
Embodiment 1(LED straight lamp of using above-mentioned conversion electric power)
This high-efficiency energy-saving LED straight tube light fixture (see figure 4); comprise power supply changeover device; led light source, straight tube lampshade; power supply changeover device wherein; led light source and lampshade connect and compose lamp body in regular turn by connector, it is characterized in that: described power supply changeover device is a rectification change-over circuit T who is made up of rectifier circuit current limiting A, synergy circuit B, protective circuit of voltage regulation C
1Four rectifier diodes of rectifier circuit current limiting are wherein formed bridge rectifier, resistor R
1, capacitor C
1, wherein, comprise power supply changeover device by AC power AC kind high-efficiency energy-saving LED straight tube light fixture, the two poles of the earth that led light source is drawn respectively with bridge rectifier in diode D
4, diode D
1Contact, diode D
3, diode D
2Contact link to each other capacitor C
1Be connected on out-put supply D to the unidirectional bridge rectifier
4, D
1Contact in, described resistor R
1Then be connected in parallel on resistor R
1Two ends; Described synergy circuit B is by capacitor C
2Take on, described protective circuit of voltage regulation C is by voltage-stabiliser tube T
2And resistor R
2Form, described synergy circuit B, protective circuit of voltage regulation C respectively with preface be connected in parallel on by in the unidirectional bridge rectifier from diode D
4, diode D
3Contact and diode D
2, diode D
1Two contacts are drawn in two polar curves of led light source.
Described led light source is composed in series by 30 ~ 70 led chips, is placed on the substrate 5 in the straight tube lampshade.
Embodiment 2(high-efficiency energy-saving LED ball-type lamp)
This high-efficiency energy-saving LED ball-type lamp (see figure 5), comprise: led chip 7, lamp holder 12, supply convertor 11, radiator 10 and cell-shell, cell-shell wherein is made up of the upper shell 14 and the lower house 5 of active buckle each other, the radiator retainer plate 15 of fixed heat sink 10 is being settled by the claw 8 that is arranged on inner walls in the inner chamber bottom of upper shell 14, it is characterized in that:
Described radiator 10 is the cylindrical body of a hollow belt radial pattern fin, described columnar radiators 11
Be embedded with lower surface in the cavity thermal column 9 of LED photophore is set.
B, described power supply changeover device are a rectification change-over circuit T who is made up of rectifier circuit current limiting A, synergy circuit B, protective circuit of voltage regulation C
1Rectifier circuit current limiting is wherein formed bridge rectifier, resistor R by four rectifier diodes
1, capacitor C
1, wherein the two poles of the earth of drawing by AC power AC respectively with bridge rectifier in diode D
4, diode D
1Contact, diode D
3, diode D
2Contact link to each other capacitor C
1Be connected on out-put supply D to the bridge rectifier
4, D
1Contact in, described resistor R
1Then be connected in parallel on capacitor C
1Two ends; Described synergy circuit B is by capacitor C
2Take on, described protective circuit of voltage regulation C is by voltage-stabiliser tube T
2And resistor R
2Form, described synergy circuit B, protective circuit of voltage regulation C be connected in parallel on respectively by in the bridge rectifier from diode D
4, diode D
3Contact and diode D
2, diode D
1Two contacts are drawn in two polar curves of led light source.
Described radiator retainer plate 15 is an endless loop, and is provided with several and the radial fin adjacent fins of radiator spacing is close-fitting claw 8 at the inner ring of described endless loop.Cooperate to reach firmly by the space between the adjacent radial fin of this claw and radiator during installation and be connected and fixed.
Described radial fin is arc-like sheet or straight line matrix.
The output lead of the power supply changeover device 11 of described led chip passes the fin gap of radiator 10 and is connected with led chip 7 on being fixed on thermal column.
The bottom of described lower house 5 is provided with air-vent 6, utilizes the hot-air rising phenomenon in this air-vent and the cell-shell, drives the outer cold air of lower housing portion and sucks, and discharged by the air-vent that is provided with from upper shell 14, thereby accelerate cooling in the shell.
Claims (1)
1. LED power source special change-over circuit is characterized in that: it is a rectification change-over circuit of being made up of rectifier circuit current limiting A, synergy circuit B, protective circuit of voltage regulation C; Rectifier circuit current limiting is wherein formed bridge rectifier, resistor R by four rectifier diodes
1, capacitor C
1, wherein the two poles of the earth of drawing by AC power AC respectively with bridge rectifier in diode D
4, diode D
1Contact, diode D
3, diode D
2Contact link to each other capacitor C
1Be connected on out-put supply D to the bridge rectifier
4, D
1Contact in, described resistor R
1Then be connected in parallel on capacitor C
1Two ends; Described synergy circuit B is by capacitor C
2Take on, described protective circuit of voltage regulation C is by voltage-stabiliser tube T
2, resistor R
2And resistor R
3Form voltage-stabiliser tube T wherein
2, resistor R
2Be connected in parallel in the output circuit of bridge rectifier resistor R
3Then be connected on diode T
2After the output circuit of bridge rectifier in; Described synergy circuit B also be connected in parallel on by in the bridge rectifier from diode D
4, diode D
3Contact and diode D
2, diode D
1Two contacts are drawn in two polar curves of led light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206401614U CN201887972U (en) | 2010-12-03 | 2010-12-03 | Special power conversion circuit for LEDs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206401614U CN201887972U (en) | 2010-12-03 | 2010-12-03 | Special power conversion circuit for LEDs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201887972U true CN201887972U (en) | 2011-06-29 |
Family
ID=44185513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206401614U Expired - Fee Related CN201887972U (en) | 2010-12-03 | 2010-12-03 | Special power conversion circuit for LEDs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201887972U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101990348A (en) * | 2010-12-03 | 2011-03-23 | 上海嘉塘电子有限公司 | Power switching circuit special for LED and application thereof |
| CN103547021A (en) * | 2012-07-16 | 2014-01-29 | 佛山市建准电子有限公司 | Lamp circuit |
-
2010
- 2010-12-03 CN CN2010206401614U patent/CN201887972U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101990348A (en) * | 2010-12-03 | 2011-03-23 | 上海嘉塘电子有限公司 | Power switching circuit special for LED and application thereof |
| CN103547021A (en) * | 2012-07-16 | 2014-01-29 | 佛山市建准电子有限公司 | Lamp circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101478849B (en) | Energy saving control circuit for LED lamp | |
| CN101482255B (en) | High-power LED lamp circuit with fan | |
| JP2010171014A (en) | Electric circuit of led lighting fixture | |
| CN206846353U (en) | A kind of radiator structure of LED light bar | |
| CN102155660B (en) | 4 pi light dipping LED (light emitting diode) ball lamp bulb | |
| CN201887972U (en) | Special power conversion circuit for LEDs | |
| CN101990348A (en) | Power switching circuit special for LED and application thereof | |
| JP6451036B2 (en) | LIGHT EMITTING DIODE LIGHTING AND ELECTRONIC DEVICE | |
| CN206943847U (en) | A kind of LED that can quickly assemble | |
| CN202017935U (en) | 4pi emergent light-emitting diode (LED) ball bulb with high radiating performance | |
| CN203052355U (en) | LED (Light Emitting Diode) light source | |
| CN202759628U (en) | LED illuminating lamp circuit | |
| CN201934960U (en) | Efficient and energy-saving spherical lamp | |
| CN201827855U (en) | High power LED heat dissipation module | |
| CN201344497Y (en) | High power LED light fixture circuit with fan | |
| CN104214733A (en) | LED lighting lamp | |
| CN202177065U (en) | Low-power alternating current (AC) light-emitting diode (LED) light source | |
| CN101988653A (en) | Highly efficient energy-saving LED (Light Emitting Diode) globe lamp | |
| CN201954345U (en) | LED (light emitting diode) down light | |
| CN102168819A (en) | 4 pi light emitting LED (Light Emitting Diode) ball bulb with high heat dissipation performance | |
| CN201992501U (en) | LED (light-emitting diode) spotlight | |
| CN202396032U (en) | LED (light-emitting diode) spotlight provided with driving board without electrolytic capacitor | |
| CN201688370U (en) | Heat abstractor and LED lamp utilizing same | |
| CN201345763Y (en) | Energy saving control circuit of LED light fixture | |
| CN201398258Y (en) | Control device of cup lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20151203 |
|
| EXPY | Termination of patent right or utility model |