CN203279271U - External power supply of LED lamp - Google Patents
External power supply of LED lamp Download PDFInfo
- Publication number
- CN203279271U CN203279271U CN2013202320151U CN201320232015U CN203279271U CN 203279271 U CN203279271 U CN 203279271U CN 2013202320151 U CN2013202320151 U CN 2013202320151U CN 201320232015 U CN201320232015 U CN 201320232015U CN 203279271 U CN203279271 U CN 203279271U
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- China
- Prior art keywords
- power supply
- resistance
- triode
- emitting diode
- lower casing
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- 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 relates to an external power supply of an LED lamp. The power supply comprises a power supply box shell, a drive power supply module and a power supply lead socket. The power supply box shell is divided into an upper shell and a lower shell, the lower shell is a base, the drive power supply module is mounted in an internally reserved mounting post by screws, square holes are preset on the two heads of the shell and used for mounting the power supply lead sockets, the input end and the output end of the power supply are respectively connected with the power supply lead sockets on the two ends of the box body. The drive power supply module is a drive power supply with over-current protection function, thus over current of an LED drive circuit is avoided, and the power supply is protected in case of over high current and voltage or interference. The external power supply has advantages of convenient repair, disassemble, assembly, reduced after-sales maintenance time and cost, high conversion efficiency, and less energy consumption.
Description
Technical field
The utility model belongs to the LED lighting technical field, relates in particular to a kind of driving power of LED light fixture.
Background technology
LED is widely used as new green light source, and its light fixture mainly is comprised of LED light source module, radiating module, driving power module, lens or reflector four major parts.The LED light fixture of prior art is all with radiating module mostly and the driving power module is concentrated is arranged in same housing (lamp body), even the driving power module is arranged on the inside of radiator, like this, after lighting for a long time, the heat energy that is discharged by LED produces harmful effect to driving power and LED light source itself together with the heat energy of driving power electronic component can be accumulated, thereby cause the unstable and accelerated ageing of circuit working, reduce useful life, also strengthened the heat radiation load of light fixture simultaneously.In addition, current LED light fixture also exists the electronic component life-span to can not show a candle to the problem in LED light source life-span, and the electric capacity life-span wherein often only has 1/10th of LED power source life, so in the LED light source life span, the maintenance rate of electronic component is very high.
Summary of the invention
The purpose of this utility model is to provide a kind of independently LED light fixture external power supply, provide a new solution for improving above-mentioned existing problem, namely according to environment for use and the specific condition of light fixture, make single power pack the driving power part is independent, and the input and output side at power pack all is designed to the connector docking, be convenient to installation and removal, during the dress lamp, as long as power pack is placed in one side of light fixture.
The utility model is comprised of power pack housing, driving power module and power supply lead wire socket.The power pack housing divides lower casing, injection molded, upper lower casing interlock docking adds screw and fixes, lower casing is pedestal, its inside is reserved with the pillar that the driving power module is installed, and installation screw is arranged on pillar, and the square hole installation is reserved to the power supply lead wire socket of plug-in unit in two of housing, the driving power module is arranged on the lower casing pillar with screw, and the input of power supply is connected with output with the power supply lead wire socket at housing two ends and is connected.
Described driving power module is the driving power with overcurrent protection, is comprised of transformer, insurance resistance, decompression capacitor, bleeder resistance, bridge rectifier, filter capacitor, light-emitting diode, filter capacitor, the first triode, the first resistance, the second resistance, the second triode, the 3rd resistance, detection resistance and AC power.Low-voltage alternating current power supply the two poles of the earth by transformation are connected with bridge rectifier with insurance resistance, decompression capacitor respectively, and wherein decompression capacitor is in parallel with bleeder resistance; Bridge rectifier is connected with light-emitting diode, and light-emitting diode is in parallel with filter capacitor; Light-emitting diode is connected with the collector electrode of the first triode, the emitter of the first triode is connected with detection resistance, the base stage of the first triode and the first resistance be connected resistance and be connected, the second resistance is connected with the first resistance, the first resistance is connected with the collector electrode of the first triode, the second resistance is connected with the collector electrode of the second triode, and the emitter of the second triode is connected with detection resistance, and the base stage of the second triode is connected with the emitter of the first triode by the 3rd resistance.Like this, when the operating current of selecting the first triode and work compression resistance during all greater than the second triode, because the operating current of the second triode and work compression resistance are more than or equal to the waste that all seems of the operating current of the first triode and work compression resistance.Detecting resistance is the resistance that can set resistance value, the conducting voltage of supposing the second triode is 0.6V, the current limit value that flows through light-emitting diode is no more than 50mA, so, usually the voltage at detection resistance two ends just equals the conducting voltage of the second triode, so, detect resistance and just determine with the electric current that flows through light-emitting diode according to flowing through the voltage that detects resistance two ends.whole loop is when the energising beginning, because detect resistance voltage less than the conducting voltage of the second triode, the second triode is in not conducting state, the first triode is because the reason of the first resistance is in conducting state, when electric current raises suddenly, process detects the voltage of resistance more than or equal to 0.6V, when namely being in overcurrent, the voltage that detects resistance makes the second triode begin conducting by the 3rd resistance, and by the voltage on second resistance reduction the first transistor base, make the first triode become gradually half conducting state, conducting resistance through the first triode is increased, electric current reduces, begin to drop to 0.6V and following until detect the voltage of resistance, the second triode also begins to be tending towards closed condition from half conducting state, play the purpose of overcurrent protection, be specially adapted to the unsettled situations of power supply such as anti-lightning and surge.The effect that the 3rd resistance plays protection the second triode and improves accuracy of detection makes the electric current of the second triode controlled, makes it can overcurrent, and the current precision through the LED lamp drive circuit of the present embodiment is improved.
The utlity model has following advantage:
1, the utility model adopts replaceable disassembly and assembly structure design, and the maintenance dismounting is convenient, greatly reduces after-sales service time and personnel cost.
2, driving power of the present utility model by scientific and reasonable design, can guarantee not overcurrent of LED drive circuit, and is too high or have when disturbing and play a protective role at current/voltage, and conversion efficiency is high, and power consumption is few.
Description of drawings
Fig. 1 is perspective view of the present utility model;
Fig. 2 is cross-sectional view of the present utility model;
Fig. 3 is driving circuit principle figure of the present utility model.
Sequence number in figure:
1---the power pack housing,
2---the driving power module,
3---the power supply lead wire socket.
Embodiment
A kind of LED light fixture external power supply is comprised of power pack housing 1, driving power module 2 and power supply lead wire socket 3.1 minute upper lower casing of power pack housing, upper lower casing interlock docking adds screw and fixes, lower casing is pedestal, driving power module 2 use screws are arranged on its inner mounting column of reserving, reserve the power supply lead wire socket 3 of square hole connector mounting at two of housing, the input of power supply is connected with output with the power supply lead wire socket 3 at box body two ends and is connected.
Claims (2)
1. LED light fixture external power supply, formed by power pack housing, driving power module and power supply lead wire socket, it is characterized in that: the power pack shell divides lower casing, injection molded, upper lower casing interlock docking adds screw and fixes, lower casing is pedestal, its inside is reserved with the pillar that the driving power module is installed, installation screw is arranged on pillar, the square hole installation is reserved to the power supply lead wire socket of plug-in unit in two of housing, the driving power module is arranged on the lower casing pillar with screw, and the input of power supply is connected with output with the power supply lead wire socket at housing two ends and is connected.
2. a kind of LED light fixture external power supply according to claim 1 is characterized in that: described driving power module by transformer, insurance resistance, decompression capacitor, bleeder resistance, bridge rectifier, filter capacitor, light-emitting diode, filter capacitor, the first triode, the first resistance, the second resistance, the second triode, the 3rd resistance, detect resistance and form; Low-voltage alternating current power supply the two poles of the earth by transformation are connected with bridge rectifier with insurance resistance, decompression capacitor respectively, and wherein decompression capacitor is in parallel with bleeder resistance; Bridge rectifier is connected with light-emitting diode, and light-emitting diode is in parallel with filter capacitor; Light-emitting diode is connected with the collector electrode of the first triode, the emitter of the first triode is connected with detection resistance, the base stage of the first triode and the first resistance be connected resistance and be connected, the second resistance is connected with the first resistance, the first resistance is connected with the collector electrode of the first triode, the second resistance is connected with the collector electrode of the second triode, and the emitter of the second triode is connected with detection resistance, and the base stage of the second triode is connected with the emitter of the first triode by the 3rd resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202320151U CN203279271U (en) | 2013-05-02 | 2013-05-02 | External power supply of LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202320151U CN203279271U (en) | 2013-05-02 | 2013-05-02 | External power supply of LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203279271U true CN203279271U (en) | 2013-11-06 |
Family
ID=49509587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202320151U Expired - Fee Related CN203279271U (en) | 2013-05-02 | 2013-05-02 | External power supply of LED lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203279271U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107965720A (en) * | 2017-12-27 | 2018-04-27 | 上海易壳照明股份有限公司 | A kind of external electrical box of freedom from repairs formula LED lamp |
-
2013
- 2013-05-02 CN CN2013202320151U patent/CN203279271U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107965720A (en) * | 2017-12-27 | 2018-04-27 | 上海易壳照明股份有限公司 | A kind of external electrical box of freedom from repairs formula LED lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20140502 |