CN205622942U - Built -inly prevent stroboscopic LED lamp - Google Patents
Built -inly prevent stroboscopic LED lamp Download PDFInfo
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- CN205622942U CN205622942U CN201620440318.6U CN201620440318U CN205622942U CN 205622942 U CN205622942 U CN 205622942U CN 201620440318 U CN201620440318 U CN 201620440318U CN 205622942 U CN205622942 U CN 205622942U
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- fluorescent tube
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Abstract
The utility model relates to a built -inly prevent stroboscopic LED lamp belongs to ligthing paraphernalia technical field. This lamp is including settling the circuit board in the fluorescent tube, the at least a set of emitting diode of the drive power supply that arranges on circuit board power supply, its characterized in that: drive power supply's power end meets constant current voltage stabilizing circuit through filter rectifier circuit after, connect light emitting diode group's one end through the energy storage transformer, what the energy storage transformer had ground connection around respectively holds class diode and filter capacitance. The during operation, through the electric current of filter rectifier circuit input behind crossing current voltage stabilizing circuit, export high PF value and low THD's electric energy, the filter capacitance after the energy storage transformer removes the ripple again, can make output current's ripple coefficient drop to below 25% to go the ripple to synthesize in power supply circuit, consequently constitute simple and direct, compact structure.
Description
Technical field
The utility model relates to a kind of LED, especially a kind of built-in anti-stroboscopic LED, belongs to ligthing paraphernalia technical field.
Background technology
The LED using series connection light emitting diode to constitute is a kind of preferable energy-saving lamp.But according to the applicant understood, generally there is stroboscopic problem in existing LED etc., prior aries such as " the small-power switching power-supply CLC ripple suppression circuit specificity analysises " of " although power technology " 9 monthly magazines in 2011 is outstanding all ripple suppression circuits, but its circuit constitutes complex, structure is compact not, is not suitable for LED illumination lamp and uses.
Content of the invention
The purpose of this utility model is: the problem existing for above-mentioned prior art, proposes one and can effectively eliminate stroboscopic, and circuit constitutes relatively simple, the built-in anti-stroboscopic LED of compact conformation.
In order to reach object above, built-in anti-stroboscopic LED of the present utility model includes the circuit board being placed in fluorescent tube, it is placed with the least one set light emitting diode driving power supply to power on described circuit board, it is characterized in that: after the power end of described driving power supply connects constant current voltage stabilizing circuit by filter rectifier, it by one end of energy-storage transformer sending and receiving optical diode group, before and after described energy-storage transformer, is respectively provided with storage stream diode and the filter capacitor of ground connection.
During work, the electric current of filtered rectification circuit input is after crossing current mu balanced circuit, export high PF(Power Factor power back-off factor) value and low THD(Total Harmonic Distortion total harmonic distortion) electric energy, remove ripple through the filter capacitor after energy-storage transformer again, the ripple factor that can make output electric current is down to less than 25%, and go ripple comprehensive in driving power circuit, therefore constitute simple and direct, compact conformation.
The utility model further improves, ground connection after the other end concatenation ripple suppression circuit of described light emitting diode group.So can effectively eliminate ripple further.
Further, the two ends of described fluorescent tube are equipped with end cap, and the circuit board of fixed in position arrangement light emitting diode group in described fluorescent tube, in one end of described fluorescent tube, fixed in position is loaded with the circuit board driving power supply and ripple suppression circuit device simultaneously.
Further, the rectification circuit in described filter rectifier has preposition and post-filtering circuit simultaneously.
Brief description
Below in conjunction with the accompanying drawings the utility model is further described.
Fig. 1 is the circuit theory diagrams of one embodiment of the utility model.
Fig. 2 is the mounting structure schematic diagram of Fig. 1 embodiment.
Detailed description of the invention
Embodiment one
The built-in anti-stroboscopic LED basic structure of the present embodiment is as shown in Figure 1, it is placed with three groups of light emitting diodes in parallel on circuit board in fluorescent tube, often organize the LED pipe having some series connection respectively, after it supplies the power end of electric drive power supply to pass through the pre-filter circuit that electric capacity CX1 and differential mode chip inductor L1 is constituted, through bridge rectifier IC1, and the post-filtering circuit that inductance L2 and electric capacity C2 is constituted, connect the input of the constant current voltage stabilizing circuit that IC2 constant-current voltage-stabilizing chip (such as BP2832) and peripheral components thereof are constituted, the output of this constant current voltage stabilizing circuit one end by energy-storage transformer T1 sending and receiving optical diode group, it is respectively provided with the storage stream diode DO2 and filter capacitor C5 of ground connection before and after this energy-storage transformer.The other end concatenation of light emitting diode group removes ripple chip IC 01(such as JW1221 SOT-8) ground connection after the ripple suppression circuit that constitutes.
During assembling, as in figure 2 it is shown, the two ends of fluorescent tube 2 are equipped with end cap 1, the circuit board 4 of fixed in position arrangement light emitting diode group in fluorescent tube 2, in one end of fluorescent tube 2, fixed in position is loaded with the circuit board 3 driving power supply and ripple suppression circuit device, therefore compact conformation simultaneously, installs very convenient.
During work, bridge rectifier and filter circuit front and back thereof complete rectifying and wave-filtering, and the R3 of IC2 and input thereof is in order to current detecting, thus ensures that this chip normally works.R1, R2 and R8, D01 power to IC2, and C2, C3 are supplied to the energy required for chip power supply.R4 and R5, R6 dividing potential drop, detect output voltage values.IC2 (7) → C4 → EGND constitutes the compensation loop of the high PF value of control and low harmony wave THD.T1 stores energy, and the filter capacitor C5 that the sustained diode 02 of its front end combines rear end can effectively remove ripple, makes ripple factor drop to 25%.The light emitting diode group other end go the drain electrode of ripple chip internal MOSFET as 1 pin, 5th, the 6th, the 7th, 8 pin are grounded, to set average output current as reference at chip internal, when the average current in transient current is more than chip, automatically adjust in chip as average current；If less than average output current, then the metal-oxide-semiconductor standard-sized sheet in chip leads to and maintains certain level, and the current ripples making LED is very little.LO end 4 pin of this chip IC 01 is grounded through shunt capacitance C01, can eliminate the 100/120Hz current ripples that pre-driver produces.
Test proves, the integrated fluorescent tube design of the present embodiment not only solves stroboscopic (ripple) problem of LED lamp tube, various LED power working frequency ripple wave can be eliminated, and PWM LED constant current of can arranging in pairs or groups drives IC2, it is applicable to non-isolated, isolated, light modulation or the various illumination driving power source such as non-dimmable, the final ripple rate < 0.04% after elimination, dramatically increase light efficiency, be greatly improved quality of lighting.
In addition to the implementation, the utility model can also have other embodiments.The technical scheme that all employing equivalents or equivalent transformation are formed, all falls within the protection domain of the utility model requirement.
Claims (4)
1. a built-in anti-stroboscopic LED, including the circuit board being placed in fluorescent tube, it is placed with the least one set light emitting diode driving power supply to power on described circuit board, it is characterized in that: after the power end of described driving power supply connects constant current voltage stabilizing circuit by filter rectifier, it by one end of energy-storage transformer sending and receiving optical diode group, before and after described energy-storage transformer, is respectively provided with storage stream diode and the filter capacitor of ground connection.
2. built-in anti-stroboscopic LED according to claim 1, it is characterised in that: ground connection after the other end concatenation ripple suppression circuit of described light emitting diode group.
3. built-in anti-stroboscopic LED according to claim 2, it is characterized in that: the two ends of described fluorescent tube are equipped with end cap, the circuit board of fixed in position arrangement light emitting diode group in described fluorescent tube, in one end of described fluorescent tube, fixed in position is loaded with the circuit board driving power supply and ripple suppression circuit device simultaneously.
4. built-in anti-stroboscopic LED according to claim 3, it is characterised in that: the rectification circuit in described filter rectifier has preposition and post-filtering circuit simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620440318.6U CN205622942U (en) | 2016-05-13 | 2016-05-13 | Built -inly prevent stroboscopic LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620440318.6U CN205622942U (en) | 2016-05-13 | 2016-05-13 | Built -inly prevent stroboscopic LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205622942U true CN205622942U (en) | 2016-10-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620440318.6U Active CN205622942U (en) | 2016-05-13 | 2016-05-13 | Built -inly prevent stroboscopic LED lamp |
Country Status (1)
| Country | Link |
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| CN (1) | CN205622942U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108471654A (en) * | 2018-05-03 | 2018-08-31 | 海宁福得电器有限公司 | A kind of anti-glimmer non-isolation type driving LED ceiling lamp tool |
-
2016
- 2016-05-13 CN CN201620440318.6U patent/CN205622942U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108471654A (en) * | 2018-05-03 | 2018-08-31 | 海宁福得电器有限公司 | A kind of anti-glimmer non-isolation type driving LED ceiling lamp tool |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |