CN203761636U - Universal alternating-current LED lamp - Google Patents
Universal alternating-current LED lamp Download PDFInfo
- Publication number
- CN203761636U CN203761636U CN201320885478.8U CN201320885478U CN203761636U CN 203761636 U CN203761636 U CN 203761636U CN 201320885478 U CN201320885478 U CN 201320885478U CN 203761636 U CN203761636 U CN 203761636U
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- CN
- China
- Prior art keywords
- led lamp
- rectifier
- light source
- source module
- control chip
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a universal alternating-current LED lamp, and the lamp comprises a rectifier, a driving unit, and a light source module switching unit. The input end of the rectifier is connected to the commercial power. The output positive end of the rectifier is connected to the output negative end of the rectifier sequentially through the light source module switching unit and the driving unit, thereby forming a loop. The light source module switching unit comprises a first lamp string H1 and a second lamp string H2. The driving unit comprises a MOS tube Q1 and a control chip U1. The beneficial effects of the utility model are that the lamp is provided with two groups of LED lamp strings; the relation of parallel and series connection is adjusted according to an input voltage; the two groups of LED lamp strings are connected in parallel when the voltage is 110V; the two groups of LED lamp strings are connected in series when the voltage is 220V, thereby enabling the lamp to be capable of employing the two types of input voltages, and enabling the application to be convenient; the lamp can adjust the size of the current on the LED lamp strings through the driving unit, thereby guaranteeing the safe operation of the LED lamp strings.
Description
Technical field
The utility model relates to a kind of LED light source, particularly relates to a kind of general AC LED lamp.
Background technology
Along with the continuous intensification of current house decoration heat, the application market of LED ceiling light is more and more hotter.In current direct-current LED product, due to the existence of transformer and electrochemical capacitor, inductance etc., make the volume of whole driving power become very large, this is for need to be by the built-in ceiling light of driving power, can affect to a certain extent the light effect that of light fixture, be a larger shortcoming.And due to the impact of electrochemical capacitor equivalent life, can not well bring into play the extra long life characteristic of LED solid state light emitter.
Because legacy user is used for replacing old fluorescent lamp tubular type ceiling light to the demand of LED ceiling light, so being LED lamp plate, major part replaces fluorescent tube, driving power is replaced electric ballast.The appearance of AC technology, has solved the problem that traditional LED drives the life-span to a great extent, and it will drive with light source integrated, only needs a pcb board just can light the ceiling light shell of any decoration type.Also make lamp interior seem more succinct, improved and light effect simultaneously.
But, because AC technology is removed outside reduction voltage circuit, LED as load must need to have with input voltage match operating voltage.And our power utilization environment is not single, this just means need to mate multiple LED load.This design work to us is redundancy, does not also meet the compatible principle in application simultaneously.
Utility model content
The purpose of this utility model is to overcome the shortcoming and defect of above-mentioned prior art, and a kind of general AC LED lamp is provided, and the operating voltage that solves existing LED lamp is single, and different power utilization environments need to be prepared different LED lamps, makes to use the defect of trouble.
The purpose of this utility model is achieved through the following technical solutions: a kind of general AC LED lamp, comprise rectifier, driver element and light source module switch unit, the input of described rectifier connects civil power, the output plus terminal of rectifier is successively through light source module switch unit, driver element is connected to the output negative terminal of rectifier, form a loop, described light source module switch unit comprises the first lamp string H1 and the second lamp string H2 in parallel, the anode of the first lamp string H1 is in series with a K switch 1, the negative terminal of the second lamp string H2 is in series with a K switch 2, the anode of the first lamp string also connects the negative terminal of the second lamp string H2 by K switch 3, described driver element comprises metal-oxide-semiconductor Q1 and control chip U1, the drain electrode of metal-oxide-semiconductor Q1 is connected to light source module switch unit negative terminal, its source electrode connects rectifier output negative terminal through voltage divider, the source electrode of metal-oxide-semiconductor Q1 also connects the signal receiving end of control chip U1 by resistance R 3, the output of control chip U1 is connected to the grid of metal-oxide-semiconductor Q1.In this device, in light source module switch unit, the first lamp string H1 and the second lamp string H2 can switch connection in series-parallel, concrete switching is when K switch 1 and K switch 2 disconnections, K switch 3 is communicated with, just make the first lamp string H1 and the second lamp string H2 series connection, and when K switch 1 and K switch 2 connections, K switch 3 disconnects, just make the first lamp string H1 and the second lamp string H2 series connection, while running into low pressure, two lamp connection in series-parallel are used, guaranteed brightness, while running into high pressure, during two lamp string series connection, by dividing potential drop, guaranteed fail safe, this device is mainly for 110V and 220V, this is two kinds of maximum voltages of daily middle application, drive circuit is the steady operation that has guaranteed light source module switch unit, control chip U1 collects the voltage of metal-oxide-semiconductor Q1 source electrode, and the voltage is here provided by voltage divider, when collecting voltage when excessive, the output of control chip U1 drags down voltage, turn-offs metal-oxide-semiconductor.From control chip U1, metal-oxide-semiconductor Q1, resistance R 3, voltage divider, form a negative feedback loop, can be according to the flow through size of current of LED of the fluctuation adjustment of input voltage, the resistance of resistance R 3 and voltage divider is all adjustable.
Further; the input of above-mentioned rectifier is also provided with a protected location; described protected location comprises the fuse F1 being serially connected on live wire; and the piezo-resistance RV1 in parallel with arranging unit; while there is short circuit; fuse F1 disconnects, and piezo-resistance mainly prevents instantaneous excessive voltage or the destruction of electric current to back end device.
Further, the vdd terminal mouth of above-mentioned control chip U1 is by capacitor C 1 ground connection.Preferably, capacitor C 1 is ceramic condenser.The effect of ceramic condenser C1 is smothing filtering because rectification out for pulsating direct current, after filtering, the control chip U1 operating voltage cunning that flattens, to guarantee that control chip U1 can normally work.
Further, above-mentioned voltage divider comprises resistance R in parallel 4 and regulating resistance R5, and voltage divider, for control chip U1 provides voltage sample, makes control chip U1 obtain at any time the voltage of metal-oxide-semiconductor Q1 source electrode.
Further, the negative electricity flush end of above-mentioned light source module switch unit is also connected to the signal receiving end of control chip U1 by resistance R 2, when LED short circuit, control chip U1 sends signal and closes metal-oxide-semiconductor Q1, the remaining little electric current R2 that flows through only now, R3, voltage divider, can avoid metal-oxide-semiconductor Q1 to be burnt.
The beneficial effects of the utility model are: this device arranges two groups of LED lamp strings, according to input voltage regulation connection in series-parallel relation, when voltage is 110V, two groups of LED lamp strings are in parallel, when voltage is 220V, two groups of LED lamp strings connect, make like this device can use with in these two kinds of input voltages, facilitated use, and in this device, by driver element, regulate the size of current on LED lamp string, guaranteed the trouble free service of LDE lamp string.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of embodiment 1;
Fig. 2 is the electrical block diagram of embodiment 2.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but structure of the present utility model is not limited only to following examples:
[embodiment 1]
As shown in Figure 1, a kind of general AC LED lamp, comprise rectifier, driver element and light source module switch unit, the input of described rectifier connects civil power, the output plus terminal of rectifier is successively through light source module switch unit, driver element is connected to the output negative terminal of rectifier, form a loop, described light source module switch unit comprises the first lamp string H1 and the second lamp string H2 in parallel, the anode of the first lamp string H1 is in series with a K switch 1, the negative terminal of the second lamp string H2 is in series with a K switch 2, the anode of the first lamp string also connects the negative terminal of the second lamp string H2 by K switch 3, described driver element comprises metal-oxide-semiconductor Q1 and control chip U1, the drain electrode of metal-oxide-semiconductor Q1 is connected to light source module switch unit negative terminal, its source electrode connects rectifier output negative terminal through voltage divider, the source electrode of metal-oxide-semiconductor Q1 also connects the signal receiving end of control chip U1 by resistance R 3, the output of control chip U1 is connected to the grid of metal-oxide-semiconductor Q1.In this device, in light source module switch unit, the first lamp string H1 and the second lamp string H2 can switch connection in series-parallel, concrete switching is when K switch 1 and K switch 2 disconnections, K switch 3 is communicated with, just make the first lamp string H1 and the second lamp string H2 series connection, and when K switch 1 and K switch 2 connections, K switch 3 disconnects, just make the first lamp string H1 and the second lamp string H2 series connection, this device is mainly for 110V and 220V, this is two kinds of maximum voltages of daily middle application, drive circuit is the steady operation that has guaranteed light source module switch unit, control chip U1 collects the voltage of metal-oxide-semiconductor source electrode, when having overvoltage and overcurrent, the output of control chip U1 drags down voltage, turn-off metal-oxide-semiconductor.
The input of the rectifier of the present embodiment is also provided with a protected location, and described protected location comprises the fuse F1 being serially connected on live wire, and the piezo-resistance RV1 in parallel with arranging unit.
The vdd terminal mouth of the control chip U1 of the present embodiment is by capacitor C 1 ground connection.Preferably, capacitor C 1 is ceramic condenser.The effect of ceramic condenser C1 is smothing filtering because rectification out for pulsating direct current, after filtering, the control chip U1 operating voltage cunning that flattens, to guarantee that control chip U1 can normally work.
The voltage divider of the present embodiment comprises resistance R in parallel 4 and regulating resistance R5.
[embodiment 2]
As Fig. 2, the structure of the present embodiment and embodiment 1 are basically identical, difference is that the negative electricity flush end of light source module switch unit is also connected to the signal receiving end of control chip U1 by resistance R 2, when LED short circuit, control chip U1 sends signal and closes metal-oxide-semiconductor Q1, the remaining little electric current R2 that flows through only now, R3, voltage divider, can avoid metal-oxide-semiconductor Q1 to be burnt.
Claims (6)
1. a general AC LED lamp, it is characterized in that: comprise rectifier, driver element and light source module switch unit, the input of described rectifier connects civil power, the output plus terminal of rectifier is successively through light source module switch unit, driver element is connected to the output negative terminal of rectifier, form a loop, described light source module switch unit comprises the first lamp string H1 and the second lamp string H2 in parallel, the anode of the first lamp string H1 is in series with a K switch 1, the negative terminal of the second lamp string H2 is in series with a K switch 2, the anode of the first lamp string also connects the negative terminal of the second lamp string H2 by K switch 3, described driver element comprises metal-oxide-semiconductor Q1 and control chip U1, the drain electrode of metal-oxide-semiconductor Q1 is connected to light source module switch unit negative terminal, its source electrode connects rectifier output negative terminal through voltage divider, the source electrode of metal-oxide-semiconductor Q1 also connects the signal receiving end of control chip U1 by resistance R 3, the output of control chip U1 is connected to the grid of metal-oxide-semiconductor Q1.
2. a kind of general AC LED lamp according to claim 1; it is characterized in that; the input of described rectifier is also provided with a protected location, and described protected location comprises the fuse F1 being serially connected on live wire, and the piezo-resistance RV1 in parallel with arranging unit.
3. a kind of general AC LED lamp according to claim 1, is characterized in that, the vdd terminal mouth of described control chip U1 is by capacitor C 1 ground connection.
4. a kind of general AC LED lamp according to claim 3, is characterized in that, described capacitor C 1 is ceramic condenser.
5. a kind of general AC LED lamp according to claim 1, is characterized in that, described voltage divider comprises resistance R in parallel 4 and regulating resistance R5.
6. a kind of general AC LED lamp according to claim 1, is characterized in that, the negative electricity flush end of described light source module switch unit is also connected to the signal receiving end of control chip U1 by resistance R 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320885478.8U CN203761636U (en) | 2013-12-31 | 2013-12-31 | Universal alternating-current LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320885478.8U CN203761636U (en) | 2013-12-31 | 2013-12-31 | Universal alternating-current LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203761636U true CN203761636U (en) | 2014-08-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320885478.8U Expired - Fee Related CN203761636U (en) | 2013-12-31 | 2013-12-31 | Universal alternating-current LED lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203761636U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108430140A (en) * | 2018-05-31 | 2018-08-21 | 东莞艾笛森光电限公司 | A kind of PWM modulation LED drive circuit with power failure memory function |
| CN108650737A (en) * | 2018-05-31 | 2018-10-12 | 浙江铭洋照明科技股份有限公司 | A kind of adaptive twin voltage LED lamp driving circuit |
-
2013
- 2013-12-31 CN CN201320885478.8U patent/CN203761636U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108430140A (en) * | 2018-05-31 | 2018-08-21 | 东莞艾笛森光电限公司 | A kind of PWM modulation LED drive circuit with power failure memory function |
| CN108650737A (en) * | 2018-05-31 | 2018-10-12 | 浙江铭洋照明科技股份有限公司 | A kind of adaptive twin voltage LED lamp driving circuit |
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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: 20140806 Termination date: 20171231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |