CN201418190Y - LED lighting control system - Google Patents
LED lighting control system Download PDFInfo
- Publication number
- CN201418190Y CN201418190Y CN2009203022191U CN200920302219U CN201418190Y CN 201418190 Y CN201418190 Y CN 201418190Y CN 2009203022191 U CN2009203022191 U CN 2009203022191U CN 200920302219 U CN200920302219 U CN 200920302219U CN 201418190 Y CN201418190 Y CN 201418190Y
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- circuit
- lighting control
- led lighting
- fuse
- led
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Abstract
The utility model relates to an LED lighting control system, and particularly to the LED control system with a load protection function. The main circuit is composed of a protection unit, a rectifyingand filtering unit, an LED array circuit and a switch circuit. The utility model is characterized in that the LED array circuit is connected with a tvs tube in parallel. The protection unit is composed of a thermistor and a fuse. When a failure occurs in the switch circuit and a voltage which is larger than the normal operation voltage of the LED lamp, the tvs tube is conducted quickly with a speed of 10<-9> second grade, the LED array circuit is shorted and the LED lamp is switched off.
Description
Technical field
The utility model relates to a kind of LED Lighting Control Assembly, especially relates to a kind of LED Lighting Control Assembly with load protection function.
Background technology
Along with people are more and more higher to the requirement of environmental protection illumination, the LED illumination with advantages such as low energy consumption, high light efficiency, long service life replaces traditional fluorescent lighting and incandescent lighting gradually, and begins to be widely used in indoor and outdoor lighting.The current source that the luminous needs of driving LED are constant, present led drive circuit generally uses mains-supplied, and the alternating current that is about to 220V is through becoming the constant-current source that driving LED needs behind the rectifying and wave-filtering.Along with the increase of power, the structure of led drive circuit also becomes increasingly complex, and volume is more and more huger, and this just is difficult to the drive circuit as the LED illumination.Indoor mains-supplied illumination led driver requires that conversion efficiency height, volume are little, high reliability and stability, the scheme of existing application mainly is to adopt isolated form (parallel connection type) and non-isolation type (tandem type) Switching Power Supply drive scheme, though it is safe and reliable that the isolated form circuit arrangement can be accomplished, but conversion efficiency is relatively low, volume is big, is difficult to be integrated in the light fixture.The high volume of non-isolation type scheme conversion efficiency is also passable, in case but driver goes wrong, can cause destructive injury to led.For the injury of the big voltage that solves the short time to circuit; the patent No. is that 200820038080 utility model discloses a kind of moving power supply of high-powered LED lamp floppy drive that contains overcurrent protection; provide a kind of, improved the functional reliability of great power LED lamp system greatly not only with overcurrent protection but also have the driving power of the great power LED of the soft start performance that can effectively avoid getting rid of big transient state harm such as load and cold start-up.It is characterized in that: after it comprises that input power-supply filter, rectifier, power factor promote the AC/DC conversion of circuit and pulse width modulator, improved the reliability of LED high-power lamp system works by the output of soft start control and constant current mode flow restricter.The patent No. is the overcurrent protective device that 200620060890.6 utility model discloses a kind of LED decorative lamp; it comprises housing; bridge rectifier; fuse; connect fuse on the live wire in the circuit in housing; then bridge rectifier is connected in the alternating current circuit; bridge rectifier is fixed on the heating panel in the housing; with nut be with externally threaded power line protection joint that power line is fixed; with a kind of insulation and the good glue of heat dispersion the space in the housing is filled up then; the utility model is simple in structure; water resistance is good; be convenient to produce, effectively prevent to damage luminous element because of voltage or electric current increase suddenly.These two kinds of technical schemes cause damage to circuit with so playing certain preventing because of overvoltage (overcurrent), but the transient voltage as the surge form changes, because the fusing speed of fuse is slow, be easy to cause after circuit system is destroyed, fuse just reaches the effect of blocking-up electric current, even fuse just fails to reach fusing at all.
Summary of the invention
The utility model mainly is to solve existing in prior technology under the overcurrent condition; system can not cut off the electric current of LED lamp rapidly; cause the technical problem of damage to circuit etc.; provide a kind of can be under overcurrent (overvoltage) situation; rapidly circuit is protected, and the LED Lighting Control Assembly of cutting off the electricity supply.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of LED Lighting Control Assembly; protected location, rectification filtering unit, led array circuit and switching circuit by mutual series connection constitute main circuit; it is characterized in that described led array circuit and a tvs pipe are in parallel, described protected location is in series by a thermistor and a fuse and constitutes.Break down at switching circuit, when producing a voltage greater than LED lamp operate as normal, the tvs pipe is with the quick conducting of speed of 10-9 level second, and the led array circuit is by short circuit, and the LED lamp is extinguished.Electric current owing to this moment is bigger simultaneously, and thermistor generates heat rapidly, thus the blocking-up electric current; When the temperature of fuse acquires a certain degree, also can block electric current.Both one of can finish the function of cutting off main circuit when in this process, reaching the purpose of blocking-up electric current, realized dual fail-safe.
As preferably, described switching circuit is made of metal-oxide-semiconductor field effect transistor, inductance, fast recovery diode and electric capacity, and described field effect transistor is as the control switch of main circuit.
As preferably, described switching circuit links to each other with a driving governor that works in the PWM mode, and the operating frequency of this driving governor is 50-300KHz.Driving governor is with the fixed frequency control external power metal-oxide-semiconductor of the highest 300kHZ, with the mode of constant current driving LED array reliably.
As preferably, described main circuit is in series with a current-limiting circuit, and this current-limiting circuit is made of several resistance parallel with one another.The electric current of led array is set by current-limiting circuit, and the linearity light adjusting function is provided, thereby reaches the purpose of the brightness of the linear LED of change.
As preferably, be in series with a PFC unit on the main circuit between described rectification filtering unit and the led array circuit.Described PFC exports rectifying and wave-filtering and carries out power factor correction, makes it can reach the purpose that improves brightness under energy-conservation prerequisite.
As preferably, the fuse in the described protected location is a resettable fuse.Resettable fuse is a kind of overcurrent Electronic Protection element.Resettable fuse is to be processed into through special process by high-tech polymer resin and conductive nano crystal grain.Under the normal condition, the conductive nano crystal forms chain conductive path, fuse operate as normal with the resin-based link; When circuit is short-circuited or transships; the big electric current of fuse of flowing through makes its collection temperature rise; when reaching Curie temperature; its density of states reduces rapidly, and phase transformation increases, and inner electrically conductive links is change of snowslide attitude or fracture; fuse is phase step type and adjourns high-impedance state; electric current is by rapid pinch off, thereby circuit is carried out fast, limits accurately and protects; its small electric current makes fuse be in guard mode always; after outage and fault eliminating, its collection temperature drop is low, and the density of states increases; phase transformation is restored; nanocrystal is reduced into the chain conductive path, and resettable fuse reverts to normal condition, need not artificial replacing.
The beneficial effect that brings of the present utility model is; solved existing in prior technology under the overcurrent condition; system can not cut off the electric current of LED lamp rapidly; cause the technical problem of damage to circuit etc.; realized under overcurrent (overvoltage) situation; can protect circuit rapidly, and the LED Lighting Control Assembly of cutting off the electricity supply.
Therefore, the utlity model has characteristics such as rational in infrastructure, safe and reliable, easy to operate.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the present utility model.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: accompanying drawing 1 is a kind of structural representation of the present utility model.The utility model is a kind of LED Lighting Control Assembly; be linked in sequence by protected location, rectification filtering unit, PFC unit, led array circuit and the switching circuit of mutual series connection and constitute main circuit; also be in series with a current-limiting circuit on the main circuit, this current-limiting circuit is made of several resistance parallel with one another.Described led array circuit and a tvs pipe are in parallel, and described protected location is in series by a thermistor and a resettable fuse and constitutes.Switching circuit is made of metal-oxide-semiconductor field effect transistor, inductance, fast recovery diode and electric capacity, and described field effect transistor is as the control switch of main circuit.Switching circuit links to each other with a driving governor that works in the PWM mode, and the operating frequency of this driving governor is 50-200KHz, is used for the conducting of high frequency control MOS field-effect transistor and closes.
The non-isolation constant-current LED Lighting Control Assembly that the utlity model has the load protection function can be set driving governor with the fixed frequency control external power metal-oxide-semiconductor of the highest 300kHZ by resistance, with the mode of constant current driving LED array reliably; The electric current of led array can be set by selecting appropriate current-limiting circuit.When switching circuit broke down, when producing a voltage greater than LED lamp operate as normal, the tvs pipe was with the quick conducting of speed of 10-9 level second, and the led array circuit is by short circuit, and the LED lamp is extinguished.Electric current owing to this moment is bigger simultaneously, and thermistor generates heat rapidly, thus the blocking-up electric current; When the temperature of fuse acquires a certain degree, also can block electric current.Both one of can finish the function of cutting off main circuit when in this process, reaching the purpose of blocking-up electric current, realized dual fail-safe.Resettable fuse is to be processed into through special process by high-tech polymer resin and conductive nano crystal grain.Under the normal condition, the conductive nano crystal forms chain conductive path, fuse operate as normal with the resin-based link; When circuit is short-circuited or transships; the big electric current of fuse of flowing through makes its collection temperature rise; when reaching Curie temperature; its density of states reduces rapidly, and phase transformation increases, and inner electrically conductive links is change of snowslide attitude or fracture; fuse is phase step type and adjourns high-impedance state; electric current is by rapid pinch off, thereby circuit is carried out fast, limits accurately and protects; its small electric current makes fuse be in guard mode always; after outage and fault eliminating, its collection temperature drop is low, and the density of states increases; phase transformation is restored; nanocrystal is reduced into the chain conductive path, and resettable fuse reverts to normal condition, need not artificial replacing.
So the feature that the utility model tool is simple to operate, esy to use, safe and reliable, and can under overcurrent (overvoltage) situation, can protect circuit rapidly, and the LED Lighting Control Assembly of cutting off the electricity supply.
Claims (9)
1. LED Lighting Control Assembly; protected location, rectification filtering unit, led array circuit and switching circuit by mutual series connection constitute main circuit; it is characterized in that described led array circuit and a tvs pipe are in parallel, described protected location is in series by a thermistor and a fuse and constitutes.
2. a kind of LED Lighting Control Assembly according to claim 1 is characterized in that described switching circuit is made of metal-oxide-semiconductor field effect transistor, inductance, fast recovery diode and electric capacity, and described field effect transistor is as the control switch of main circuit.
3. a kind of LED Lighting Control Assembly according to claim 2 is characterized in that described switching circuit links to each other with a driving governor that works in the PWM mode, and the operating frequency of this driving governor is 50-200KHz.
4. according to claim 1 or 2 or 3 described a kind of LED Lighting Control Assemblies, it is characterized in that described main circuit is in series with a current-limiting circuit, this current-limiting circuit is made of several resistance parallel with one another.
5. according to claim 1 or 2 or 3 described a kind of LED Lighting Control Assemblies, it is characterized in that being in series with on the main circuit between described rectification filtering unit and the led array circuit PFC unit.
6. a kind of LED Lighting Control Assembly according to claim 4 is characterized in that being in series with on the main circuit between described rectification filtering unit and the led array circuit PFC unit.
7. according to claim 1 or 2 or 3 described a kind of LED Lighting Control Assemblies, it is characterized in that the fuse in the described protected location is a resettable fuse.
8. a kind of LED Lighting Control Assembly according to claim 4 is characterized in that the fuse in the described protected location is a resettable fuse.
9. a kind of LED Lighting Control Assembly according to claim 5 is characterized in that the fuse in the described protected location is a resettable fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203022191U CN201418190Y (en) | 2009-04-15 | 2009-04-15 | LED lighting control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203022191U CN201418190Y (en) | 2009-04-15 | 2009-04-15 | LED lighting control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201418190Y true CN201418190Y (en) | 2010-03-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203022191U Expired - Fee Related CN201418190Y (en) | 2009-04-15 | 2009-04-15 | LED lighting control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201418190Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102413602A (en) * | 2011-07-23 | 2012-04-11 | 李鸿 | Intelligent limit temperature protection device of LED (light-emitting diode) street lamp |
| CN106937436A (en) * | 2015-12-31 | 2017-07-07 | 赛尔富电子有限公司 | A kind of LED power with protection circuit |
| CN109362147A (en) * | 2018-10-16 | 2019-02-19 | 江苏稳润光电科技有限公司 | A kind of indicator light that can be tested by EMC antisurge |
-
2009
- 2009-04-15 CN CN2009203022191U patent/CN201418190Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102413602A (en) * | 2011-07-23 | 2012-04-11 | 李鸿 | Intelligent limit temperature protection device of LED (light-emitting diode) street lamp |
| CN106937436A (en) * | 2015-12-31 | 2017-07-07 | 赛尔富电子有限公司 | A kind of LED power with protection circuit |
| CN106937436B (en) * | 2015-12-31 | 2019-05-03 | 赛尔富电子有限公司 | A kind of LED power with protection circuit |
| CN109362147A (en) * | 2018-10-16 | 2019-02-19 | 江苏稳润光电科技有限公司 | A kind of indicator light that can be tested by EMC antisurge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG ZHONGLANG ENERGY-SAVING TECHNOLOGY CO., L Free format text: FORMER OWNER: ZHOUSHAN HAODE OPTO-ELECTRONICS TECHNOLOGY CO., LTD. Effective date: 20110523 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 316000 HAODE LED BUILDING, LINCHENG INDUSTRIAL PARK, ZHOUSHAN CITY, ZHEJIANG PROVINCE TO: 316000 XINGANG INDUSTRY DEVELOPMENT ZONE, BEICHAN, ZHOUSHAN CITY, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110523 Address after: 316000 Zhoushan Xingang Industrial Development Zone, Zhejiang, Hebei Province Patentee after: Zhejiang Zhong wave energy saving Technology Co., Ltd. Address before: 316000 Zhejiang city of Zhoushan province Lincheng Industrial Park building led holder Patentee before: Zhoushan Haode Opto-Electronics Technology Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100303 Termination date: 20120415 |