CN202488795U - Illumination circuit of LED (Light-Emitting Diode) straight lamp tube - Google Patents
Illumination circuit of LED (Light-Emitting Diode) straight lamp tube Download PDFInfo
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- CN202488795U CN202488795U CN2012201138547U CN201220113854U CN202488795U CN 202488795 U CN202488795 U CN 202488795U CN 2012201138547 U CN2012201138547 U CN 2012201138547U CN 201220113854 U CN201220113854 U CN 201220113854U CN 202488795 U CN202488795 U CN 202488795U
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Abstract
The utility model provides an illumination circuit of an LED (Light-Emitting Diode) straight lamp tube, relating to LED illumination circuits. The driving circuit of the illumination circuit is additionally provided with a rectifying and filtering module, a sampling control module, and a constant-voltage and constant-current module. The voltage input module, the rectifying and filtering module, the sampling control module, the constant-voltage and constant-current module, a current output module and the LED lamp circuit of the illumination circuit are connected in sequence. The phenomena of overvoltage, under-voltage and instability which occur in electric supply can be restrained, compensated and protected, so that the light intensity of the lamp is stabilized and the service life of the illumination circuit is prolonged.
Description
Technical field
The utility model relates to a kind of LED lighting circuit.
Background technology
LED will progressively replace traditional light source illumination lamp fitting because of its environmental protection, advantage energy-conservation, that the life-span is long, and existing LED straight light tube lighting circuit comprises drive circuit and LED circuit for lamp, and drive circuit adopts simple capacitance decompression mode mostly; Do not reach the constant current effect through capacitance decompression; Because the charge-discharge characteristic of electric capacity causes such circuit that a shortcoming is arranged, and is exactly the moment in Switching Power Supply; Cause the immediate current that flows through LED very big easily, the LED device is burnt; Because overvoltage, under-voltage, wild effect can appear in civil power, existing LED straight light tube driving circuit structure is simple, lacks rectification, sampling control, pressure-stabilizing constant flow function, causes LED lamp brightness frequent variations, shortens the useful life of LED straight light tube.
Seven groups of lamp pearls of the general employing of the LED circuit for lamp of existing LED straight light tube lighting circuit; Every group of 13 lamp pearls are divided into two lines and are connected in series; The mode cloth lamp that is connected in parallel between the group group then, such lamp pearl distribute and amount to 182 LED lamp pearls, in actual application; The brightness of LED straight light tube is not good, has influenced the illuminating effect of fluorescent tube.
Summary of the invention
The purpose of the utility model is to overcome the deficiency of prior art, and a kind of have rectifying and wave-filtering, sampling control, pressure-stabilizing constant flow function, the higher LED straight light tube lighting circuit of brightness simultaneously are provided.
The utility model mainly is made up of drive circuit and LED circuit for lamp, and solving the technical scheme that its technical problem adopts is that drive circuit has increased rectification filtering module, sampling control module and pressure-stabilizing constant flow module.The voltage input module of entire circuit, rectification filtering module, sampling control module, pressure-stabilizing constant flow module, electric current output module and LED circuit for lamp are connected in regular turn.
Above-mentioned rectification filtering module comprises DB1, DB1, C3-1, C3-2, C4 assembly, and sampling control module comprises R1, R2, R4, R3-1, R3-2, C5, C6, C7, VR1, UI assembly, and the pressure-stabilizing constant flow module comprises U1, FRD1, C10 assembly.
Above-mentioned LED circuit for lamp adopts 12 groups of LED lamp pearls, and every group by the series connection of several LED lamp pearls, is divided into triplex row and is connected in parallel, and is connected in parallel between the group group.The LED circuit for lamp adopts the 3528 type paster LED lamp pearls of 3.2V.
The good effect of the utility model is that LED straight light tube lighting circuit has increased rectification filtering module, sampling control module, pressure-stabilizing constant flow module; The overvoltage that can occur civil power, under-voltage, wild effect suppresses, compensate, protect, stablized the brightness of lamp and increased useful life; The LED circuit for lamp adopts 12 groups of LED lamp pearls, is connected in parallel between the group group, and such cloth lamp mode can be arranged more LED lamp pearl on the pcb board of equal length, has improved the brightness of illumination of LED straight light tube.
Description of drawings
Fig. 1 is the circuit diagram of the utility model;
Fig. 2 is the LED circuit for lamp sketch map of the utility model;
Fig. 3 is the drive circuit schematic diagram of the utility model.
Wherein 1 voltage input module, 2 rectification filtering modules, 3 sampling control module, 4 pressure-stabilizing constant flow modules, 5 electric current output modules, 6LED circuit for lamp, 7LED lamp pearl.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Like Fig. 1, Fig. 2, shown in Figure 3; Drive circuit has increased rectification filtering module 2, sampling control module 3 and pressure-stabilizing constant flow module 4; Voltage input module 1, rectification filtering module 2, sampling control module 3, pressure-stabilizing constant flow module 4, electric current output module 5 and LED circuit for lamp 6 are connected in regular turn; The LED circuit for lamp adopts 12 groups of LED lamp pearls 7, and every group of 35 lamp pearls are divided into triplex row and are connected in series, and are connected in parallel between the group group.The 3528 type paster LED lamp pearls that LED circuit for lamp 6 adopts 3.2V.
Rectification filtering module comprises DB1, DB1, C3-1, C3-2, C4 assembly, and sampling control module comprises R1, R2, R4, R3-1, R3-2, C5, C6, C7, VR1, UI assembly, and the pressure-stabilizing constant flow module comprises U1, FRD1, C8 assembly.
The course of work of the circuit that the utility model adopted is following: 90V---the 150V civil power through voltage input module 1 after at first through rectification filtering module 2 output DCs and adjust the electric current of voltage input module 1 and the phase difference between the voltage; Again through the stability of sampling control module 3 control voltages, proofread and correct, give the LED lamp pearl on the LED circuit for lamp 67 power supplies behind the burning voltage electric current through 4 pairs of circuit powers of pressure-stabilizing constant flow module at last.
Claims (6)
1. a LED straight light tube lighting circuit mainly is made up of drive circuit and LED circuit for lamp, it is characterized in that drive circuit has increased rectification filtering module, sampling control module and pressure-stabilizing constant flow module; The voltage input module of this circuit, rectification filtering module, sampling control module, pressure-stabilizing constant flow module, electric current output module and LED circuit for lamp are connected in regular turn.
2. LED straight light tube lighting circuit according to claim 1 is characterized in that rectification filtering module comprises DB1, DB1, C3-1, C3-2, C4 assembly.
3. LED straight light tube lighting circuit according to claim 1 is characterized in that sampling control module comprises R1, R2, R4, R3-1, R3-2, C5, C6, C7, VR1, UI assembly.
4. LED straight light tube lighting circuit according to claim 1 is characterized in that the pressure-stabilizing constant flow module comprises U1, FRD1, C8 assembly.
5. LED straight light tube lighting circuit according to claim 1 is characterized in that the LED circuit for lamp adopts 12 groups of LED lamp pearls, and every group by the series connection of several LED lamp pearls, is divided into triplex row and is connected in parallel, and is connected in parallel between the group group.
6. according to claim 1 or 5 described LED straight light tube lighting circuits, it is characterized in that LED lamp pearl is the 3528 type paster LED lamp pearls of 3.2V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201138547U CN202488795U (en) | 2012-03-23 | 2012-03-23 | Illumination circuit of LED (Light-Emitting Diode) straight lamp tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201138547U CN202488795U (en) | 2012-03-23 | 2012-03-23 | Illumination circuit of LED (Light-Emitting Diode) straight lamp tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202488795U true CN202488795U (en) | 2012-10-10 |
Family
ID=46963177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201138547U Expired - Fee Related CN202488795U (en) | 2012-03-23 | 2012-03-23 | Illumination circuit of LED (Light-Emitting Diode) straight lamp tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202488795U (en) |
-
2012
- 2012-03-23 CN CN2012201138547U patent/CN202488795U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121010 Termination date: 20210323 |