CN201803198U - Constant-current compensation type LED (light-emitting diode) fluorescent lamp - Google Patents
Constant-current compensation type LED (light-emitting diode) fluorescent lamp Download PDFInfo
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- CN201803198U CN201803198U CN2010205533635U CN201020553363U CN201803198U CN 201803198 U CN201803198 U CN 201803198U CN 2010205533635 U CN2010205533635 U CN 2010205533635U CN 201020553363 U CN201020553363 U CN 201020553363U CN 201803198 U CN201803198 U CN 201803198U
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Abstract
The utility model discloses a constant-current compensation type LED (light-emitting diode) fluorescent lamp which is characterized by comprising a dual-bridge rectifier source, an LED module and a constant-current control module, wherein the dual-bridge rectifier source comprises rectifier bridges and a metal oxide film capacitor, and the metal oxide film capacitor is electrically connected with the output ends of the rectifier bridges in parallel; the LED module comprises at least one LED light source; the constant-current control module comprises a constant-current control unit, and the constant-current control unit comprises at least one constant-current diode connected with an LED pipe circuit in series; and the LED module and the constant-current control module are connected in series, the LED module and the constant-current control module are positioned at the output ends of the dual-bridge rectifier source, and the dual-bridge rectifier source, the LED module and the constant-current control module are jointly electrically connected in an electrical loop. The circuit is characterized in that the LED light source and the constant-current control circuit are connected in series and then connected with the rectification output ends as electrical loads, thereby eliminating the hidden trouble that a device is easy to be damaged due to too high voltage or too high current; and another characteristic is that an electrolytic capacitor is eliminated, and the two measures can basically eliminate the bottleneck that the service life of the LED fluorescent lamp is constrained due to the problem of a driving circuit.
Description
Technical field
The utility model relates to a kind of lighting, specifically is the compensation LED fluorescent lamp of a kind of constant current.
Background technology
Along with significantly promoting and industrialization manufacturing and encapsulation technology increasingly mature of low-power LED light efficiency, quickened LED and entered the paces of illumination market.The LED fluorescent lamp of the traditional T8 type of present multiple replacement fluorescent lamp begins the inlet chamber intraoral illumination, power is from 8W to 23W, length is from 0.59 meter to 1.5 meters, go out that light effect has a sheen with non-sheen, driving power have the branch plate isolated or non-isolated, power supply accommodation wide power arranged with narrow power supply, how not grand occasion of kind is that a hundred flowers blossom, and to strive wind scoop gorgeous.As a whole, compare with conventional fluorescent, photoelectric properties indexs such as its light efficiency, brightness, colour rendering index, power-efficient all are better than conventional fluorescent, but the reliability of light fixture and life-span are not to reach 50,000 hours promise with the LED coupling.Problem has more at driving power, that is: the life-span of driving power is far below led light source, yet the main cause that restriction does not increase in the driving power life-span goes out to be operated in the device under the high voltage in only 8,000 hours electrochemical capacitor life-span of using, the circuit and IC is perishable and the limited device temperature that causes on the plate of drive plate heat conduction and radiating condition is too high and lost efficacy in advance aspect these three in power supply.This shows to have only power supply and the heat conduction and heat radiation problem of resolving led light source from circuit arrangement and engineering design, could eliminate the bottleneck of restriction LED fluorescent lifetime.For removing the bottleneck of restriction LED fluorescent lifetime, need the compensation LED fluorescent lamp of a kind of constant current.
Summary of the invention
The utility model is short according to the LED fluorescent lamp driving power supply life-span in the above-mentioned prior art, the low low defective of LED fluorescent lamp tool bulk life time that causes of reliability, provide a kind of constant current compensation LED fluorescent lamp, the utility model is achieved by following technical proposals:
The compensation LED fluorescent lamp of a kind of constant current comprises:
Doube bridge rectification source, described doube bridge rectification module comprises rectifier bridge, burning membrane capacitance, described burning membrane capacitance is connected to described rectification bridge output end;
The LED module, described LED module comprises at least one led light source;
Constant current control module, described constant current control module comprises the constant current control module, described constant current control module comprises at least one current regulator diode series LED pipe circuit;
The series connection of described LED module and constant current control module, and described LED module and constant current control module be positioned at doube bridge rectification source output terminal, and doube bridge rectification source, LED module and constant current control module are electrically connected in the electric loop of closure jointly.
Preferably, described constant current control module also comprises the compensation control module, described compensation control module comprises the signal amplification circuit that signal sampling loop and Current Negative Three-Point Capacitance resistance constitute, and described compensation control module input is connected to described constant current control module two ends;
Described constant current control module also comprises the voltage deployment unit, and described voltage deployment unit comprises adjusting resistance, and described voltage deployment unit is positioned at described compensation control module electrical signal.
The compensation LED fluorescent lamp of the constant current that the present invention program provides, after being led light source and constant-current control circuit is gone here and there mutually, the characteristics of its circuit are connected to rectification output end as using electric loading, pass through voltage distribution, reduce the operating voltage that is added to constant-current control circuit, each device all is operated in the safe range of the little electric current of low-voltage, and this has fundamentally eliminated device because of overtension or the excessive flimsy hidden danger of electric current.Another characteristics of circuit are without electrochemical capacitor, have only used two burning membrane capacitances in the circuit, and the burning membrane capacitance life-span reaches tens thousand of hours, are complementary with life-span of LED.More than two measures eliminated bottleneck basically because of drive circuit problem restriction LED fluorescent lifetime.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, does not constitute to improper qualification of the present invention, in the accompanying drawings:
Fig. 1 is the utility model embodiment LED module schematic diagram;
Fig. 2 is the utility model embodiment constant current control module schematic diagram;
Fig. 3 is the utility model embodiment doube bridge rectification source circuit theory diagram;
Fig. 4 compensates the control module schematic diagram for the utility model embodiment;
Fig. 5 is the utility model embodiment voltage deployment unit schematic diagram;
Fig. 6 is the utility model embodiment schematic diagram;
Among the figure: P1, P2 fluorescent tube two ends transmission of electricity twinlead pin;
The DB rectifier bridge; C1 rectifying and wave-filtering electric capacity;
VD1-VD272 LED light emitting diode;
The S1-S4 current regulator diode; D1, D2 thresholding diode;
The SMD transistor of T1-T3;
R1-R28 is 1206 Chip-Rs.
The specific embodiment
Describe the present invention in detail below in conjunction with accompanying drawing and specific embodiment, be used for explaining the utility model in this illustrative examples of the present utility model and explanation, but not as to qualification of the present utility model.
As shown in Figure 1, the LED module part of the compensation LED fluorescent lamp of constant current, it is the main body of this fluorescent lamp, realizes illumination by it, it is made up of 268 3528 encapsulated LED of four and 67 strings on annexation.This string and combination have improved on the one hand the operating voltage and the power consumption efficiency of module, have eliminated on the other hand to go out a LED lamp and cause the hidden danger that whole lamp breath goes out;
As shown in Figure 2, the compensation LED fluorescent lamp of constant current constant current control module, (S1～S4) is connected in series a 3528LED pipe institute respectively and is formed, and the constant current effect rises certainly in the C-V characteristic of current regulator diode, when the terminal voltage that module is controlled in constant current changes within the specific limits by four current regulator diodes, the electric current of current regulator diode remains unchanged substantially, adopt four constant current branch roads in the circuit, every branch road all has this characteristic, therefore, the total current that flows through the LED module remains unchanged when supply voltage changes substantially;
As Fig. 3 and shown in Figure 7, double rectifier bridge is connected in series the doube bridge rectification source that constitutes with starter, comprise rectifier bridge, the burning membrane capacitance, described burning membrane capacitance electricity is connected to described rectification bridge output end, and doube bridge rectification source output terminal is electrically connected LED module and constant current control module, during work, the 220V electric main passes through P1, arbitrary two electrodes input doube bridge rectification source in the P2 joint, the connection of all the other two compatible starter for fluorescent lamp, obtain DC voltage at its output, this voltage is loaded in the LED module and constant current control module that is connected with series system, regulation and control by constant current control module circuit make the electric current that flows through on the LED module obtain constant, starter is isolated by rectifier bridge in circuit, no current flows through, electric current by ballast only flows through the LED module, do not unload starter when therefore replacing, it is rational that tube circuit connects, the energy operate as normal, meet the requirement of international standard about " the LED fluorescent lamp is replaced conventional fluorescent must be equally convenient to changing fluorescent tube, do not change the former mode of connection ".
As improvement of the technical scheme, as shown in Figure 4, the constant current control module also is electrically connected with the compensation control module, it comprises the signal sampling loop that parallel resistor R1, R3 constitute, this signal sampling loop is connected serially to triode T1 base stage, and passes through operating point and gain that Current Negative Three-Point Capacitance resistance R 2 is stablized the T1 pipe;
Also comprise the voltage deployment unit, as shown in Figure 5, it comprises a plurality of series connection and/or adjusting resistance arranged side by side, this voltage deployment unit is electrically connected with compensation control module output, control signal adjusting self internal resistance that it sends by receiving the compensation control module, thereby change the relations of distribution to voltage at different levels, realize stablizing LED module electric current.When line voltage decline caused voltage to reduce lighting tube brightness decline, the compensation control module sent signal, and the voltage deployment unit reduces self internal resistance, improved the dividing potential drop ratio of LED module and constant current control module, and it is constant to keep electric current.Otherwise then increase internal resistance, reduce the dividing potential drop ratio, the increase of electric current made by the emperor order.
More than the technical scheme that the embodiment of the invention provided is described in detail, used specific case herein the principle and the embodiment of the embodiment of the invention are set forth, the explanation of above embodiment only is applicable to the principle that helps to understand the embodiment of the invention; Simultaneously, for one of ordinary skill in the art, according to the embodiment of the invention, the part that on the specific embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (5)
1. compensation LED fluorescent lamp of constant current is characterized in that comprising:
Doube bridge rectification source, described doube bridge rectification module comprises rectifier bridge, burning membrane capacitance, described burning membrane capacitance electricity is connected to described rectification bridge output end;
The LED module, described LED module comprises at least one led light source;
Constant current control module, described constant current control module comprises the constant current control module, described constant current control module comprises at least one current regulator diode series LED pipe circuit;
The series connection of described LED module and constant current control module, and described LED module and constant current control module be positioned at doube bridge rectification source output terminal, and doube bridge rectification source, LED module and constant current control module are electrically connected in the electric loop jointly.
2. the compensation LED fluorescent lamp of constant current as claimed in claim 1 is characterized in that:
Described constant current control module also comprises the compensation control module, and described compensation control module comprises the signal amplification circuit that signal sampling loop and Current Negative Three-Point Capacitance resistance constitute, and described compensation control module input is connected to described constant current control module two ends;
Described constant current control module also comprises the voltage deployment unit, and described voltage deployment unit comprises adjusting resistance, and described voltage deployment unit is positioned at described compensation control module electrical signal.
3. the compensation LED fluorescent lamp of constant current as claimed in claim 1 is characterized in that:
Led light source quantity is 268 in the described LED module.
4. the compensation LED fluorescent lamp of constant current as claimed in claim 3 is characterized in that:
Described 268 led light sources are divided into the led light source circuit of 4 parallel connections
5. the compensation LED fluorescent lamp of constant current as claimed in claim 1 is characterized in that:
Described constant current control module comprises the current regulator diode series LED pipe circuit of four parallel connections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205533635U CN201803198U (en) | 2010-09-30 | 2010-09-30 | Constant-current compensation type LED (light-emitting diode) fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205533635U CN201803198U (en) | 2010-09-30 | 2010-09-30 | Constant-current compensation type LED (light-emitting diode) fluorescent lamp |
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| CN201803198U true CN201803198U (en) | 2011-04-20 |
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| CN2010205533635U Expired - Fee Related CN201803198U (en) | 2010-09-30 | 2010-09-30 | Constant-current compensation type LED (light-emitting diode) fluorescent lamp |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102438379A (en) * | 2012-01-06 | 2012-05-02 | 昆山市华英精密模具工业有限公司 | LED (Light Emitting Diode) driving power supply |
| CN103209517A (en) * | 2012-01-11 | 2013-07-17 | 三星电子株式会社 | Apparatus And Method For Compensating For Current Deviation |
| CN109578844A (en) * | 2018-11-29 | 2019-04-05 | 上海顿格电子贸易有限公司 | A kind of constant pressure driving variable illumination region line lamp |
-
2010
- 2010-09-30 CN CN2010205533635U patent/CN201803198U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102438379A (en) * | 2012-01-06 | 2012-05-02 | 昆山市华英精密模具工业有限公司 | LED (Light Emitting Diode) driving power supply |
| CN103209517A (en) * | 2012-01-11 | 2013-07-17 | 三星电子株式会社 | Apparatus And Method For Compensating For Current Deviation |
| CN109578844A (en) * | 2018-11-29 | 2019-04-05 | 上海顿格电子贸易有限公司 | A kind of constant pressure driving variable illumination region line lamp |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Constant-current compensation type LED (light-emitting diode) fluorescent lamp Effective date of registration: 20111122 Granted publication date: 20110420 Pledgee: Agricultural Bank of China Limited by Share Ltd Wuxi science and Technology Branch Pledgor: Wuxi Huazhaohong Optoelectronic Technology Co., Ltd. Registration number: 2011990000446 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20121031 Granted publication date: 20110420 Pledgee: Agricultural Bank of China Limited by Share Ltd Wuxi science and Technology Branch Pledgor: Wuxi Huazhaohong Optoelectronic Technology Co., Ltd. Registration number: 2011990000446 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Constant-current compensation type LED (light-emitting diode) fluorescent lamp Effective date of registration: 20121031 Granted publication date: 20110420 Pledgee: Agricultural Bank of China Limited by Share Ltd Wuxi science and Technology Branch Pledgor: Wuxi Huazhaohong Optoelectronic Technology Co., Ltd. Registration number: 2012990000663 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20151103 Granted publication date: 20110420 Pledgee: Agricultural Bank of China Limited by Share Ltd Wuxi science and Technology Branch Pledgor: Wuxi Huazhaohong Optoelectronic Technology Co., Ltd. Registration number: 2012990000663 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Constant-current compensation type LED (light-emitting diode) fluorescent lamp Effective date of registration: 20151106 Granted publication date: 20110420 Pledgee: Agricultural Bank of China Limited by Share Ltd Wuxi science and Technology Branch Pledgor: Wuxi Huazhaohong Optoelectronic Technology Co., Ltd. Registration number: 2015990000989 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20190930 |
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| CF01 | Termination of patent right due to non-payment of annual fee |