CN105163456A - Constant-current driving power failure self-delay LED lighting lamp - Google Patents
Constant-current driving power failure self-delay LED lighting lamp Download PDFInfo
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- CN105163456A CN105163456A CN201510639652.4A CN201510639652A CN105163456A CN 105163456 A CN105163456 A CN 105163456A CN 201510639652 A CN201510639652 A CN 201510639652A CN 105163456 A CN105163456 A CN 105163456A
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- constant
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- power failure
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
A constant-current driving power failure self-delay LED lighting lamp selects a constant-current driver as a main core device, is configured with a rechargeable circuit and a lithium battery pack. When a mains supply fails suddenly, the lithium battery pack supplies working power to an LED lamp, thereby ensuring that the LED lighting lamp can be automatically delayed for about two hours.
Description
Technical field
The present invention relates to a kind of constant current and drive the LED illumination lamp had a power failure from time delay.
Background technology
Light fixture popular on the market of current LED illumination lamp, does not functionally all have a power failure from delay function, causes civil power once have a power failure will bring a lot of trouble to user.
Summary of the invention
A kind of constant current of the present invention drives the LED illumination lamp had a power failure from time delay; constant-current supply driver is selected to be main devices; additional anti-overdischarge circuit; allow storage battery in discharge process; automatically the work of LED illumination lamp is stopped when discharge voltage drops to 2.4V; ensure that battery is surplus and have 2.4V voltage, for charging next time is convenient, protection battery integrity.
Constant current drives a LED illumination lamp of stopping electronic delay, and its circuit composition is made up of constant-current source circuit, three terminal voltage regulator circuit, lithium battery, power switch circuit and powerful lamp bulb of electric torch chip.
Accompanying drawing explanation
Accompanying drawing is that a kind of constant current drives the circuit theory diagrams had a power failure from the LED illumination lamp of time delay.
Embodiment
As shown in drawings, IC1 is constant-flow driver, selects LED constant-current driver product popular on market, and 220V mains supply is received in its input, and output is constant DC power supply.
As shown in drawings, IC2 is three terminal regulator, and input receives the output of constant-current circuit, and its output is stable magnitude of voltage, and numerical values recited is by the power decision of light fixture, if bulb lamp then selects 7805.
As shown in drawings, E is lithium battery group, and bulb lamp selects model to be 16340 in this way, and its positive pole receives the positive pole of three terminal regulator, and negative pole receives the output negative pole of pressurizer.D1 is rectifier diode, and its effect is isolation and guides.During mains-supplied, guide electric current supply LED illumination lamp by D1; During mains failure, D1 isolates lithium battery and importation circuit, only powers to LED illumination lamp.
As shown in drawings, IC3 is mains switch chip, and its model is TWH8778, and 1 end is input, and 2,3 ends are outputs, and 4 ends are earth terminals, and 5 ends are control ends, is connected in series the voltage-stabiliser tube of 2,4V.When the voltage of 5 ends is higher than 2.4V, voltage-stabiliser tube D2 conducting, trigger IC3 conducting, the power delivery of 1 end is to 2,3 ends, and LED illumination lamp is bright; When the voltage of 5 ends is lower than 2.4V, voltage-stabiliser tube D2 ends, and IC3 does not obtain trigger voltage and ends, and 2, the 3 end Non voltage outputs of IC3, LED quits work.Its effect of circuit of IC3 and D2 composition is when civil power is stopped power supply, rely on the voltage triggered D2 conducting of lithium battery itself, thus IC3 also and then conducting, LED illumination lamp automatic time delay a period of time under the state making mains failure, until when the discharge voltage of lithium battery is lower than 2.4V, D2 ends, IC3 is cut-off and then, and LED illumination lamp quits work, thus ensures that storage battery is had an appointment the voltage of 2.4V, can charge normal when coming for there being civil power next time, realizing anti-overdischarge function.LED is light-emitting diode, in this way bulb lamp, the chip of the 5 ~ 10W selecting flashlight special.
Claims (1)
1. a constant current drives the LED illumination lamp had a power failure from time delay, it is characterized in that: LED illumination lamp is designed with constant current source driving circuit, chargeable circuit, lithium battery group, anti-battery over-discharge circuit and LED lamp bead, LED constant-current driver popular on market selected by described constant-current circuit, described chargeable circuit adopts constant voltage charging circuit, described anti-overdischarge circuit is usability number is TWH8778 chip, being connected in series voltage stabilizing values at 5 ends of chip is the voltage-stabiliser tube of 2.4V, make cell discharge voltage lower than the work automatically stopping LED during 2.4V, ensure the surplus electricity of having a surplus of battery, for continuing charging when next civil power comes, described LED lamp bead, select powerful flashlight special lamp pearl, power is optional at 5 ~ 10W.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201510639652.4A CN105163456A (en) | 2015-09-29 | 2015-09-29 | Constant-current driving power failure self-delay LED lighting lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201510639652.4A CN105163456A (en) | 2015-09-29 | 2015-09-29 | Constant-current driving power failure self-delay LED lighting lamp |
Publications (1)
Publication Number | Publication Date |
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CN105163456A true CN105163456A (en) | 2015-12-16 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201510639652.4A Pending CN105163456A (en) | 2015-09-29 | 2015-09-29 | Constant-current driving power failure self-delay LED lighting lamp |
Country Status (1)
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CN (1) | CN105163456A (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2242390Y (en) * | 1995-07-28 | 1996-12-11 | 韩云萍 | Lighting device with no-interruption function |
CN102651928A (en) * | 2011-02-25 | 2012-08-29 | 黄焕珠 | LED fluorescent lamp with over-voltage protection function |
CN103260295A (en) * | 2012-02-21 | 2013-08-21 | 黄焕珠 | Lighting switch with overvoltage protection function |
CN203814016U (en) * | 2014-04-18 | 2014-09-03 | 段康道 | Light-operable and light adjustable LED circuit |
CN203840600U (en) * | 2014-04-03 | 2014-09-17 | 重庆书福电气有限公司 | Automatic emergency lamp circuit |
CN104901280A (en) * | 2015-06-09 | 2015-09-09 | 廖婕 | Intelligent protection circuit |
-
2015
- 2015-09-29 CN CN201510639652.4A patent/CN105163456A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2242390Y (en) * | 1995-07-28 | 1996-12-11 | 韩云萍 | Lighting device with no-interruption function |
CN102651928A (en) * | 2011-02-25 | 2012-08-29 | 黄焕珠 | LED fluorescent lamp with over-voltage protection function |
CN103260295A (en) * | 2012-02-21 | 2013-08-21 | 黄焕珠 | Lighting switch with overvoltage protection function |
CN203840600U (en) * | 2014-04-03 | 2014-09-17 | 重庆书福电气有限公司 | Automatic emergency lamp circuit |
CN203814016U (en) * | 2014-04-18 | 2014-09-03 | 段康道 | Light-operable and light adjustable LED circuit |
CN104901280A (en) * | 2015-06-09 | 2015-09-09 | 廖婕 | Intelligent protection circuit |
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Legal Events
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C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
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WD01 | Invention patent application deemed withdrawn after publication | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151216 |