CN1812676A - LED lamps - Google Patents
LED lamps Download PDFInfo
- Publication number
- CN1812676A CN1812676A CNA200510038244XA CN200510038244A CN1812676A CN 1812676 A CN1812676 A CN 1812676A CN A200510038244X A CNA200510038244X A CN A200510038244XA CN 200510038244 A CN200510038244 A CN 200510038244A CN 1812676 A CN1812676 A CN 1812676A
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- led
- circuit
- led light
- control circuit
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Abstract
A LED lamp is prepared as switching in set voltage control circuit and set current control circuit in each series-connected LED circuit to let each LED hold a constant value for ensuring LED service life, still holding original constant current by the other LED when one or partial LED is damaged to cause short-circuit and keeping normal operation state by LED on the other circuit based on original current when one or partial LED on certain circuit is cut off.
Description
Technical field
The present invention relates to lighting technical field, relate in particular to a kind of LED light fixture.
Background technology
LED solid light source white light-emitting diode, the total solids cold light source, contrast with the traditional lighting technology, maximum difference is the difference of structure and material, it is a kind of semiconductor that electric energy can be converted into visible light, two-layer up and down electrode is housed, there is electric conducting material the centre, and the color of light changes to some extent according to the difference of material character, operating voltage only has 1～4 volt, and useful life is more than 100,000 hours.Elements such as mercury are not added in LED inside, pollution-free, and discarded object is recyclable, belong to typical green illumination product, the LED light fixture is general all to be made of the some series-parallel LED light-emitting diode in lamp body, the lamp body, the led board circuit of fixing some series-parallel LED light-emitting diodes and the control circuit of driving LED light-emitting diode work, because due to the characteristic of LED, small current fluctuation to several milliamperes also will produce influence greatly to life-span and the light decay of LED.And most of employing of the control circuit in the existing LED light fixture decided voltage output, when voltage reaches 3.8V, electric current on the LED is 50mA, the normal use standard that has surpassed LED, its life-span and light decay can significantly descend, when voltage reached 4.2V, the electric current on the LED was 110mA, and LED will be downright bad fast so.Suppose that all the other LED work on the circuit, but because the short circuit of a LED causes all the other the LED electric currents on this circuit all to strengthen, consequently accelerate the death of all the other LED when a LED damage is short-circuited.When a LED damage was opened circuit, all the other LED on this circuit all quit work, and cause the electric current of LED on all the other circuits to be multiplied, and cause the death of LED rapidly.
Summary of the invention
Purpose of the present invention is at adopting above-mentioned all deficiencies that constant voltage control circuit brought in the existing LED light fixture, provide on the line one or partial L ED to be short-circuited or when opening circuit, the LED light fixture that all the other LED still can operate as normal.
The objective of the invention is to be achieved through the following technical solutions, a kind of LED light fixture, comprise that the led board circuit of luminous two diodes of some series-parallel LED in lamp body, the lamp body, fixing some series-parallel LED light-emitting diodes and the constant voltage control circuit of driving LED light-emitting diode work constitute, it is characterized in that inserting constant voltage control circuit and fixed current controling circuit in the circuit of each bar series LED light-emitting diode.
The present invention is by inserting constant voltage control circuit and fixed current controling circuit in the circuit of each bar series LED light-emitting diode, make the electric current on every LEDs all keep a constant value, guarantee the life-span of LED, when supposing that in certain bar circuit one or partial L ED are short-circuited because of damage, all the other LED of this circuit still keep original constant electric current, do not influence work and life-span.When supposing that in certain bar circuit one or partial L ED open circuit, the LED on this circuit all quits work, but the LED on all the other circuits continues to keep former incoming current and normal operating state.
Description of drawings
Figure is a control circuit block diagram of the present invention;
Among the figure, the 1st, power supply, the 2nd, constant voltage control circuit, the 3rd, fixed current controling circuit, the 4th, LED.
Specific implementation method
The present invention is made of the some series-parallel LED4 light-emitting diode in lamp body, the lamp body, the led board circuit of fixing some series-parallel LED4 light-emitting diodes and the constant voltage control circuit 2 and the fixed current controling circuit 3 of driving LED light-emitting diode work, constant voltage control circuit 2 and fixed current controling circuit 3 insert in the circuit of each bar series LED 4 light-emitting diode, connect power supply 1, current stabilization of the present invention after the circuit parallel connection of each bar series LED light-emitting diode and access constant voltage control circuit and fixed current controling circuit.
When LED is bad, constant-current circuit will be undertaken the function of keeping constant current, be suitable for the series connection of plurality of LEDs, can keep the pressure reduction of 10V at least.
Claims (2)
1, a kind of LED light fixture, comprise that the led board of some series-parallel LED light-emitting diode in lamp body, the lamp body, fixing some series-parallel LED light-emitting diodes and the constant voltage control circuit of driving LED light-emitting diode work constitute, it is characterized in that inserting constant voltage control circuit and fixed current controling circuit in the circuit of each bar series LED light-emitting diode.
2, LED light fixture according to claim 1, it is characterized in that each bar series LED light-emitting diode and insert constant voltage control circuit and the circuit parallel connection of fixed current controling circuit after connect power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200510038244XA CN1812676A (en) | 2005-01-24 | 2005-01-24 | LED lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200510038244XA CN1812676A (en) | 2005-01-24 | 2005-01-24 | LED lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1812676A true CN1812676A (en) | 2006-08-02 |
Family
ID=36845266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200510038244XA Pending CN1812676A (en) | 2005-01-24 | 2005-01-24 | LED lamps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1812676A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101207950B (en) * | 2006-12-20 | 2010-05-19 | 钰瀚科技股份有限公司 | System, redundant circuit and method for driving light emitting diode |
| TWI422278B (en) * | 2010-05-25 | 2014-01-01 | Optromax Electronics Co Ltd | Illuminating apparatus and light source control circuit thereof |
-
2005
- 2005-01-24 CN CNA200510038244XA patent/CN1812676A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101207950B (en) * | 2006-12-20 | 2010-05-19 | 钰瀚科技股份有限公司 | System, redundant circuit and method for driving light emitting diode |
| TWI422278B (en) * | 2010-05-25 | 2014-01-01 | Optromax Electronics Co Ltd | Illuminating apparatus and light source control circuit thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |