CN203574904U - High-power-factor, high-efficiency and flicker-free LED lighting system - Google Patents
High-power-factor, high-efficiency and flicker-free LED lighting system Download PDFInfo
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- CN203574904U CN203574904U CN201320710797.5U CN201320710797U CN203574904U CN 203574904 U CN203574904 U CN 203574904U CN 201320710797 U CN201320710797 U CN 201320710797U CN 203574904 U CN203574904 U CN 203574904U
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- power factor
- factor correction
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Abstract
The utility model relates to a high-power-factor, high-efficiency and flicker-free LED lighting system, which comprises a rectifying circuit, a power factor correction module and a high-frequency impulse voltage generating circuit, and is characterized in that a commercial power input is accessed to the power factor correction module after passing through the rectifying circuit, and the power factor correction module is connected with the high-frequency impulse voltage generating circuit and then accessed to a plurality of LED lamps which are connected in parallel to each other. According to the lighting system provided by the utility model, the LED lamp bulb accessed to the system is formed by connecting the LED with one resistor or a current limiting circuit in series, the size of the LED lamp bulb is greatly reduced, the manufacturing technology of the LED lamp bulb is greatly improved, and the effects of being variable in appearance, being ultra-thin and ultra-small, and realizing the true long service life of the LED lamps can be achieved.
Description
Technical field
The utility model relates to LED lighting field, the LED illuminator of especially a kind of High Power Factor, high efficiency, flicker free.
Background technology
Under the background that Present Global energy starved worry raises once again, energy savings is the important problem that we shall face future, at lighting field, the application of LED luminous product is just attracting common people's sight, LED is as a kind of novel green light source product, must be the trend of future development, 21st century take the novel illumination light source epoch that LED is representative entering.LED bulb lamp tool and incandescent lamp comparison, its maximum motive force of development is exactly the advantage of energy-conserving and environment-protective.
Yet, in existing LED illuminator, although adopt the direct current supply of built-in light fixture mesolow to reach not glimmer but efficiency is not high and the life-span is short, adopt Alternating Current Power Supply can reach higher power factor and the efficiency of medium level, but cause the defects such as LED appearance flicker.
Utility model content
In view of this, the purpose of this utility model is to provide the LED illuminator of a kind of High Power Factor, high efficiency, flicker free, reaches the advantage of flicker free when reaching high power factor and greater efficiency.
The utility model adopts following scheme to realize: the LED illuminator of a kind of High Power Factor, high efficiency, flicker free, comprise that a rectification circuit, a power factor correction module, a high-frequency pulse voltage produce circuit, it is characterized in that: civil power input accesses described power factor correction module after described rectification circuit, described power factor correction module connects described high-frequency pulse voltage and produces circuit, then accesses the LED light fixture of a plurality of mutual parallel connections.
In the utility model one embodiment, described LED light fixture is composed in series by a LED lamp and a current-limiting circuit.
In the utility model one embodiment, it is the PWM module with pulse duration adjustable function that described high-frequency pulse voltage produces circuit.
In the utility model one embodiment, the input of described power factor correction module connects a plurality of inductance and a power factor correction unit, described power factor correction unit connects the control end of an analog switch Q, described a plurality of inductance is connected respectively and is connected with one end of described analog switch Q after an analog switch K and as the output of described power factor correction module, the control end of a plurality of analog switch K is all connected to the output of a control unit, the input of described control unit is as the feedback end of described power factor correction module and connect a power detecting unit.
In the utility model one embodiment, the output of described power factor correction module also connects a filter network.
In the utility model one embodiment, described power detecting unit is a current detecting unit.
The utility model is applicable to the fields such as family, teaching building, office, factory, in high frequency pulse dc electricity by the unified access of illuminator after alternating current-direct current and pulses switch, utilize high frequency pulse dc power supply to reach flicker free effect, add power factor correction module to improve power factor, meanwhile, add feedback regulation mechanism to improve the power factor under different capacity condition.It should be noted that, in the LED bulb of connecting system, only LED need to be connected with a resistance or current-limiting circuit, greatly reduced the volume of LED bulb, the manufacture craft of LED bulb is improved greatly, and can accomplish that outward appearance is changeable, ultra-thin, extra small, realize the real long-life texts of LED light fixture.
For making the purpose of this utility model, technical scheme and advantage clearer, below will, by specific embodiment and relevant drawings, the utility model be described in further detail.
Accompanying drawing explanation
Fig. 1 is illuminator general frame figure of the present utility model.
Fig. 2 is illuminator schematic diagram of the present utility model.
Fig. 3 is the theory diagram that the utility model adds the PFC module of feedback mechanism.
Embodiment
As depicted in figs. 1 and 2, the utility model provides the LED illuminator of a kind of High Power Factor, high efficiency, flicker free, comprise that a rectification circuit, a power factor correction module, a high-frequency pulse voltage produce circuit, civil power input accesses described power factor correction module after described rectification circuit, described power factor correction module connects described high-frequency pulse voltage and produces circuit, then accesses the LED light fixture of a plurality of mutual parallel connections.Preferably, described LED light fixture is by LED lamp (LED1, a LED2 ... LEDn) and one current-limiting circuit (CL1, CL2 ... CLn) be composed in series, described high-frequency pulse voltage produces circuit and is preferably the PWM module with pulse duration adjustable function.
As shown in Figure 3, the input Vin of described power factor correction module connects a plurality of inductance (L1, L2 ... Ln) and one power factor correction unit PFC, described power factor correction unit PFC connects the control end of an analog switch Q, described a plurality of inductance (L1, L2 ... Ln) the analog switch K(K1 that connects respectively, K2 ... Kn) be connected with one end of described analog switch Q after and as the output end vo ut of described power factor correction module, the other end ground connection of described analog switch Q, a plurality of analog switch K(K1, K2 ... Kn) control end is all connected to the output of a control unit Cont, the input of described control unit Cont is as the feedback end Vcont of described power factor correction module and connect a power detecting unit.Preferably, the output end vo ut of described power factor correction module also connects a filter network (diode D and capacitor C); Described power detecting unit is a current detecting unit, and this current detecting unit is arranged at the negative pole of described a plurality of LED light fixtures, gathers the realtime power of a plurality of LED light fixtures, is beneficial to the open and close that control unit Cont carries out control simulation switch.
Fig. 3 take PWM mode to be the implementation method of the broad power band High Power Factor of example explanation, and the circuit of power factor correction of PFM mode is applicable equally.
Preferably, the model of power factor correction unit is PFC MFP62520, and described control unit can be a single-chip microcomputer or PLC module etc.
Owing to adopting high frequency pulse power supply to power to LED, greatly improve the light efficiency ratio of LED, lower temperature rise, life-saving.
Expanded application 1, on above embodiment basis, utilization (high frequency) pulse voltage produces circuit the pulse voltage duty ratio of output is adjusted, and can easily realize all light fixtures are carried out to unified wide region, continuous, stable, efficient brightness adjustment function.
Expanded application 2, the brightness regulation implementation method of single light fixture: by a PWM switch of special switch series connection of single light fixture, adjustment PWM output can realize accurate, continuous, the wide region of brightness and control.
Above-listed preferred embodiment; the purpose of this utility model, technical scheme and advantage are further described; institute is understood that; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (6)
1. the LED illuminator of a High Power Factor, high efficiency, flicker free, comprise that a rectification circuit, a power factor correction module, a high-frequency pulse voltage produce circuit, it is characterized in that: civil power input accesses described power factor correction module after described rectification circuit, described power factor correction module connects described high-frequency pulse voltage and produces circuit, then accesses the LED light fixture of a plurality of mutual parallel connections.
2. the LED illuminator of High Power Factor according to claim 1, high efficiency, flicker free, is characterized in that: described LED light fixture is composed in series by a LED lamp and a current-limiting circuit.
3. the LED illuminator of High Power Factor according to claim 1, high efficiency, flicker free, is characterized in that: it is the PWM module with pulse duration adjustable function that described high-frequency pulse voltage produces circuit.
4. High Power Factor according to claim 1, high efficiency, the LED illuminator of flicker free, it is characterized in that: the input of described power factor correction module connects a plurality of inductance and a power factor correction unit, described power factor correction unit connects the control end of an analog switch Q, described a plurality of inductance is connected respectively and is connected with one end of described analog switch Q after an analog switch K and as the output of described power factor correction module, the control end of a plurality of analog switch K is all connected to the output of a control unit, the input of described control unit is as the feedback end of described power factor correction module and connect a power detecting unit.
5. the LED illuminator of High Power Factor according to claim 4, high efficiency, flicker free, is characterized in that: the output of described power factor correction module also connects a filter network.
6. the LED illuminator of High Power Factor according to claim 4, high efficiency, flicker free, is characterized in that: described power detecting unit is a current detecting unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710797.5U CN203574904U (en) | 2013-11-12 | 2013-11-12 | High-power-factor, high-efficiency and flicker-free LED lighting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710797.5U CN203574904U (en) | 2013-11-12 | 2013-11-12 | High-power-factor, high-efficiency and flicker-free LED lighting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203574904U true CN203574904U (en) | 2014-04-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320710797.5U Expired - Fee Related CN203574904U (en) | 2013-11-12 | 2013-11-12 | High-power-factor, high-efficiency and flicker-free LED lighting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203574904U (en) |
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2013
- 2013-11-12 CN CN201320710797.5U patent/CN203574904U/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 |
Granted publication date: 20140430 Termination date: 20161112 |
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| CF01 | Termination of patent right due to non-payment of annual fee |