CN203219560U - An external power source of an LED down lamp - Google Patents
An external power source of an LED down lamp Download PDFInfo
- Publication number
- CN203219560U CN203219560U CN2013201320690U CN201320132069U CN203219560U CN 203219560 U CN203219560 U CN 203219560U CN 2013201320690 U CN2013201320690 U CN 2013201320690U CN 201320132069 U CN201320132069 U CN 201320132069U CN 203219560 U CN203219560 U CN 203219560U
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- Prior art keywords
- resistance
- power source
- triode
- power supply
- driving power
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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 provides a driving power source of an LED down lamp. The driving power source comprises a power source box shell, a driving power source module and power source lead outlets. The power source box shell is divided into an upper shell and a lower shell, wherein the lower shell serves as a base; the driving power source module is installed on an installation support reserved in the shell through a screw; square holes are reserved at the two heads of the shell for installation of the power source lead outlets; and the input end and the output end of the power source are connected with the power source lead outlets at the two ends of the shell. The driving power source module is a driving power source having the function of overcurrent protection, thereby guaranteeing that an LED driving circuit suffers no overcurrent and achieving a protection effect under the condition of excessive current and voltage or interference. The external power source has the advantages that the maintenance, disassembly and assembly are easy, the after-sale maintenance time and cost are reduced, the conversion efficiency is high and the energy consumption is low.
Description
Technical field
The utility model belongs to the LED lighting technical field, relates in particular to a kind of driving power of LED Down lamp.
Background technology
LED is widely used as new green light source, and its light fixture mainly is made up of led light source module, radiating module, driving power module, lens or reflector four major parts.The LED Down lamp of prior art all is with radiating module mostly and the driving power module is concentrated is arranged in the same housing (lamp body), even the driving power module is installed in the inside of radiator, like this, after lighting for a long time, the heat energy that is discharged by LED can be accumulated with the heat energy of driving power electronic component and driving power and led light source itself are produced harmful effect, thereby cause circuit working instability and accelerated ageing, 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 has only 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 Down lamp external power supply, provide a new solution for improving above-mentioned existing problem, namely according to environment for use and the specific condition of Down lamp, 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 butt joint, be convenient to installation and removal, during the dress lamp, as long as power pack is placed one side of Down lamp.
The utility model is made up of power pack housing, driving power module and power supply lead wire socket.The power pack housing divides goes up lower casing, injection molded, last lower casing interlock butt joint adds screw and fixes, lower casing is pedestal, its inside is reserved with the pillar that the driving power module is installed, and the installation screw is arranged on the 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 installed on the lower casing pillar with screw, and the input of power supply is connected with the power supply lead wire socket at housing two ends respectively with output.
Described driving power module is the driving power with overcurrent protection, is made up of transformer, insurance resistance, decompression capacitor, bleeder resistance, bridge rectifier, filter capacitor, light-emitting diode, filter capacitor, first triode, first resistance, second resistance, second triode, the 3rd resistance, detection resistance and AC power.Low-voltage alternating current power supply the two poles of the earth by transformation link to each other 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 first triode, the emitter of first triode is connected with detection resistance, the base stage of first triode is connected with second resistance with first resistance, second resistance is connected with first resistance, first resistance is connected with the collector electrode of first triode, second resistance is connected with the collector electrode of second triode, and the emitter of second triode is connected with detection resistance, and the base stage of second triode is connected with the emitter of first triode by the 3rd resistance.Like this, when the operating current of selecting first triode and work compression resistance during all greater than second triode, because the operating current of second triode and work compression resistance are more than or equal to the waste that all seems of the operating current of first triode and work compression resistance.Detecting resistance is the resistance that can set resistance value, the conducting voltage of supposing second triode is 0.6V, the current limit value that flows through light-emitting diode is no more than 50mA, so, usually the voltage that detects the resistance two ends just equals the conducting voltage of second triode, so, detect resistance and just determine according to flowing through the voltage that detects the resistance two ends and the electric current that flows through light-emitting diode.Whole loop is when the energising beginning; because detect resistance voltage less than the conducting voltage of second triode; second triode is in not conducting state; first triode is because the reason of 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 just being in overcurrent; the voltage that detects resistance makes second triode begin conducting by the 3rd resistance; and reduce voltage on first transistor base by second resistance; make the triode of winning become half conducting state gradually, the conducting resistance through first triode is increased, electric current reduces; begin to drop to 0.6V and following up to the voltage that detects resistance; second triode also begins to be tending towards closed condition from half conducting state, plays the purpose of overcurrent protection, is specially adapted to the unsettled situations of power supply such as anti-thunderbolt and surge.The effect that the 3rd resistance plays protection second triode and improves accuracy of detection makes the electric current of second triode controlled, makes it can overcurrent, and the current precision through the LED lamp drive circuit of 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, reduces after-sales service time and personnel cost greatly.
2, driving power of the present utility model can guarantee not overcurrent of led drive circuit by pointed scientific and reasonable design, and is too high or have when disturbing and play a protective role at current/voltage, and the conversion efficiency height, 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 drive circuit schematic diagram of the present utility model.
Sequence number among the figure:
1---the power pack housing,
2---the driving power module,
3---the power supply lead wire socket.
Embodiment
A kind of LED Down lamp external power supply is made up of power pack housing 1, driving power module 2 and power supply lead wire socket 3.The power pack housing was gone up lower casing in 1 minute, last lower casing interlock butt joint adds screw and fixes, lower casing is pedestal, driving power module 2 usefulness screws are installed 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 the power supply lead wire socket 3 at box body two ends respectively with output.
Claims (2)
1. LED Down lamp 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 goes up lower casing, injection molded, last lower casing interlock butt joint adds screw and fixes, lower casing is pedestal, its inside is reserved with the pillar that the driving power module is installed, the installation screw is arranged on the 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 installed on the lower casing pillar with screw, and the input of power supply is connected with the power supply lead wire socket at housing two ends respectively with output.
2. a kind of LED Down lamp 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, first triode, first resistance, second resistance, second triode, the 3rd resistance, detect resistance and form; Low-voltage alternating current power supply the two poles of the earth by transformation link to each other 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 first triode, the emitter of first triode is connected with detection resistance, the base stage of first triode is connected with second resistance with first resistance, second resistance is connected with first resistance, first resistance is connected with the collector electrode of first triode, second resistance is connected with the collector electrode of second triode, and the emitter of second triode is connected with detection resistance, and the base stage of second triode is connected with the emitter of first triode by the 3rd resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201320690U CN203219560U (en) | 2013-03-22 | 2013-03-22 | An external power source of an LED down lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201320690U CN203219560U (en) | 2013-03-22 | 2013-03-22 | An external power source of an LED down lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203219560U true CN203219560U (en) | 2013-09-25 |
Family
ID=49209060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201320690U Expired - Fee Related CN203219560U (en) | 2013-03-22 | 2013-03-22 | An external power source of an LED down lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203219560U (en) |
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2013
- 2013-03-22 CN CN2013201320690U patent/CN203219560U/en not_active Expired - Fee Related
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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: 20130925 Termination date: 20140322 |