CN101815384A - Constant current type LED illumination lamp - Google Patents
Constant current type LED illumination lamp Download PDFInfo
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- CN101815384A CN101815384A CN201010150196A CN201010150196A CN101815384A CN 101815384 A CN101815384 A CN 101815384A CN 201010150196 A CN201010150196 A CN 201010150196A CN 201010150196 A CN201010150196 A CN 201010150196A CN 101815384 A CN101815384 A CN 101815384A
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- constant current
- voltage
- voltage stabilization
- led illumination
- led
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Abstract
The invention discloses a constant current type LED illumination lamp, which is characterized by comprising a power supply rectification filter circuit, a voltage stabilization constant current LED drive circuit and an LED illumination control circuit. The power supply rectification filter circuit is formed by connecting insurance FT1, bridge rectifiers D1-D4, filter voltage stabilization capacitors C1-C5, inductors L1-L2, a diode D5, an integrated voltage stabilization block U1, and the like. The voltage stabilization constant current LED drive circuit is formed by connecting a triode T1, an optical coupler test controller U2, a voltage stabilization diode D6, resistors R1-R3, and the like. The LED illumination control circuit is formed by connecting an illumination intensity conversion switch SW1, warm white illumination bodies ED1-LED7 with high brightness and large power, and voltage stabilization tubes D11-D17. The constant current type LED illumination lamp has the advantages of high illumination efficiency, good quality of optical lines, power and energy saving, wide application range of voltage, long service life, stable performance, and the like.
Description
Technical field
The present invention relates to illuminating lamp, be specifically related to a kind of constant current type LED illumination lamp.
Background technology
At present, what illuminating lamp generally adopted is incandescent lamp and fluorescent lamp or electronic energy-saving lamp, conventional incandescent has that luminous efficiency is low, luminous mass is poor, useful life is short and shortcoming such as energy consumption height, fluorescent lamp or electronic energy-saving lamp be the energy-conservation and quality height that emits beam than incandescent lamp, but electromagnetic interference is big, and voltage adaptation narrow range, useful life are also shorter.
Summary of the invention
Problem to be solved by this invention is how a kind of constant current type LED illumination lamp is provided, and this invention constant current type LED illumination lamp has: luminous efficiency height, light quality are good, power and energy saving, voltage adaptation wide ranges, long service life and steady performance.
Technical problem proposed by the invention is to solve like this: construct a kind of constant current type LED illumination lamp, it is characterized in that: comprise power supply rectification filter circuit, voltage stabilization constant current LED drive circuit and LED illuminance control circuit.Described power supply rectification filter circuit is connected and composed by insurance FT1, bridge rectifier D 1-D4, filtering voltage regulation capacitor C 1-C5, inductance L 1-L2, diode D5 and integrated voltage stabilizer U1 etc.; Described voltage stabilization constant current LED drive circuit is detected control device U2, voltage stabilizing didoe D6 and resistor R 1-R3 etc. and is connected and composed by triode T1, optocoupler; Described LED illuminance control circuit is connected and composed by illumination change over switch SW1, the powerful luminous element LED1-LED7 of high brightness warm white and voltage-stabiliser tube D11-D17.
According to constant current type LED illumination lamp provided by the present invention, it is characterized in that: illumination change over switch SW1 is six gear uniselectors.
Beneficial effect of the present invention is: luminous efficiency height, light quality are good, adjustable brightness, energy-conservation electric energy, voltage adaptation wide ranges, long service life and steady performance, and the desk lamp that can do eyeshield uses.
Description of drawings
Accompanying drawing 1 is a circuit structure diagram of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing.
As shown in Figure 1, exchange the interior arbitrary voltage of 80V-270V scope through insurance RT1, bridge rectifier (D1-D4), capacitor (C2, C3, C4, C5), inductance (L1, L2) form the pi type filter output dc voltage, one the tunnel through R1 supply LED luminous element, one the tunnel through triode T1, resistance R 2, optical coupler U2, height integrated voltage stabilizer U1, take a sample, analyze, compare and control, the led drive circuit of forming pressure-stabilizing constant flow, D6 is the voltage stabilizing didoe of triode T1 base stage, D5 is a fast recovery diode, U1 is the height integrated package of pressure-stabilizing, (1) pin of optical coupler U2 links to each other with resistor R 2 one ends, (2) pin of optical coupler and the negative pole of output link to each other, (3) pin of optical coupler links to each other with (2) pin of height integrated package of pressure-stabilizing U1, and optical coupler (4) pin links to each other with rectifier (D1-D4) output ground.When being transported to LED luminous element A, the reduction of B both end voltage because of grid voltage change, the constant current sampling rate is managed the T1 base potential and is reduced, the ec electric current of T1 increases, increase by R2, optical coupler (1), (2) pin electric current, optical coupler (3), (4) electric current reduce, (3) pin above earth potential of height integrated package of pressure-stabilizing U1 descends, and A, B terminal voltage raise; When being transported to LED luminous element A, the rising of B both end voltage because of grid voltage change, the constant current sampling rate is managed the T1 base potential and is raise, the ec electric current of T1 reduces, reduce by R2, optical coupler (1), (2) pin electric current, optical coupler (3), (4) electric current reduce, (3) pin above earth potential of height integrated package of pressure-stabilizing U1 rises, and A, B terminal voltage reduce, and promptly remains LED luminous element A, the B both end voltage is constant.C1, C6, C8 are HF filtering capacitor among Fig. 1, and C7 is a voltage stabilizing low frequency filtering electric capacity; SW1 is the manual rotary change over switch, LED1 and LED2 lighted when contact contacted 1 contact, LED1-LED3 lighted when contact contacted 2 contacts, LED1-LED4 lighted when contact contacted 3 contacts, LED1-LED5 lighted when contact contacted 4 contacts, LED1-LED6 lighted when contact contacted 5 contacts, and LED lighted entirely when contact contacted 6 contacts; D11-D17 be respectively with the voltage stabilizing didoe of LED parallel connection, the one, prevent that the single overtension of powered on moment LED luminous element from damaging the LED luminous element, the 2nd, when the LED of a plurality of series connection luminous element has a damage to open circuit, voltage stabilizing didoe in parallel on this luminous element punctures conducting, guarantees that the LED luminous element of other series connection is normally luminous.
The present invention also can make various flexible mode, more than by embodiment by accompanying drawing 1 illustrated embodiment, be that foregoing of the present invention is done step detailed description, but this should be interpreted as that the scope of the theme that the present invention is above-mentioned only limits to described example.Do not breaking away under the above-mentioned technological thought situation of the present invention, various replacements and change according to ordinary skill knowledge and customary means are made all should comprise within the scope of the invention.
Claims (2)
1. a constant current type LED illumination lamp is characterized in that: comprise power supply rectification filter circuit, voltage stabilization constant current LED drive circuit and LED illuminance control circuit.Described power supply rectification filter circuit is connected and composed by insurance (FT1), bridge rectifier (D1-D4), filtering voltage regulation electric capacity (C1-C5), inductance (L1-L2), diode (D5) and integrated voltage stabilizer (U1) etc.; Described voltage stabilization constant current LED drive circuit is detected control device (U2), voltage stabilizing didoe (D6) and resistor (R1-R3) etc. and is connected and composed by triode (T1), optocoupler; Described LED illuminance control circuit is connected and composed by illumination change over switch (SW1), the powerful luminous element of high brightness warm white (LED1-LED7) and voltage-stabiliser tube (D11-D17).
2. according to the described constant current type LED illumination lamp of claim 1, it is characterized in that: illumination change over switch (SW1) is six gear uniselectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010150196A CN101815384A (en) | 2010-04-16 | 2010-04-16 | Constant current type LED illumination lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010150196A CN101815384A (en) | 2010-04-16 | 2010-04-16 | Constant current type LED illumination lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101815384A true CN101815384A (en) | 2010-08-25 |
Family
ID=42622457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010150196A Withdrawn CN101815384A (en) | 2010-04-16 | 2010-04-16 | Constant current type LED illumination lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101815384A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102143639A (en) * | 2011-04-18 | 2011-08-03 | 鸿富锦精密工业（深圳）有限公司 | LED (Light Emitting Diode) driving circuit |
| CN102740539A (en) * | 2011-04-14 | 2012-10-17 | 海洋王照明科技股份有限公司 | Led drive circuit |
| CN103517486A (en) * | 2012-06-18 | 2014-01-15 | 绍兴温家环保新材料有限公司 | Led fluorescent lamp driving circuit |
-
2010
- 2010-04-16 CN CN201010150196A patent/CN101815384A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102740539A (en) * | 2011-04-14 | 2012-10-17 | 海洋王照明科技股份有限公司 | Led drive circuit |
| CN102143639A (en) * | 2011-04-18 | 2011-08-03 | 鸿富锦精密工业（深圳）有限公司 | LED (Light Emitting Diode) driving circuit |
| CN103517486A (en) * | 2012-06-18 | 2014-01-15 | 绍兴温家环保新材料有限公司 | Led fluorescent lamp driving circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Open date: 20100825 |