CN204518194U - HF lamp without electrodes and radio-frequency generator thereof - Google Patents
HF lamp without electrodes and radio-frequency generator thereof Download PDFInfo
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- CN204518194U CN204518194U CN201520263909.6U CN201520263909U CN204518194U CN 204518194 U CN204518194 U CN 204518194U CN 201520263909 U CN201520263909 U CN 201520263909U CN 204518194 U CN204518194 U CN 204518194U
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- Prior art keywords
- lamp
- radio
- electrodes
- frequency generator
- air gap
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- 229910000859 α-Fe Inorganic materials 0.000 claims description 8
- 239000011162 core material Substances 0.000 description 25
- 239000000463 material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
A kind of HF lamp without electrodes and radio-frequency generator thereof, described radio-frequency generator comprises EMI filter circuit, rectifier, pfc circuit and high-frequency inverter, described pfc circuit comprises control module and PFC inductance, described PFC inductance comprises toroidal core and is wrapped in the wire on described toroidal core, and described toroidal core has air gap.The HF lamp without electrodes that the utility model provides and radio-frequency generator thereof, by offering air gap on PFC inductance, can reduce the cost of HF lamp without electrodes.
Description
Technical field
The utility model relates to lighting technical field, particularly a kind of HF lamp without electrodes and radio-frequency generator thereof.
Background technology
HF lamp without electrodes is the new high-tech product of the field integrated applications such as set electron technology, vacuum science, power electricity, plasma science, magnetic material science, also known as electronic bulbs.Owing to there is no filament or electrode in bulb, a rising star in HF lamp without electrodes becomes " green illumination " field.In electrical design, HF lamp without electrodes adopts active power factor to compensate, and under supply voltage wide fluctuations, constant voltage is powered, the luminous flux of stable output; Input clean circuit and radiation proof, make electromagnetic interference EMC meet national examination criteria completely.Along with the development of lighting technology, the increasing of the world's " energy-saving and emission-reduction " dynamics, environmental protection, energy-saving lighting lamp are accepted, and HF lamp without electrodes was with its specular removal, high-color rendering, long-life, already approved in illuminated rows without advantages such as stroboscopic, true environmental protection, especially powerful HF lamp without electrodes had been developed.
Fig. 1 is the structural representation of common HF lamp without electrodes, and described HF lamp without electrodes comprises radio-frequency generator 11, power coupler 12 and bulb 13.Described bulb 13 inside is filled with inert gas and mercury vapour, envelope inner wall is coated with fluorescent material, described power coupler 12 is arranged in described bulb 13, and one end connects an output of described radio-frequency generator 11, and the other end connects another output of described radio-frequency generator 11.Particularly, input voltage vin is converted to high frequency sinusoidal voltage by described radio-frequency generator 11, produce the ignition voltage of an about 3000V simultaneously, described high frequency sinusoidal voltage and described ignition voltage are sent to described power coupler 12 through high-frequency feed line, produce the high-frequency current flowing through described power coupler 12; According to electromagnetic induction principle, in described bulb 13, produce an electromagnetic field of high frequency; Under the effect of electromagnetic field of high frequency, the inert gas of described bulb 13 inside ionizes, and excites mercury vapour to give off ultraviolet, and fluorescent material absorbs ultraviolet thus produces visible ray.
Fig. 2 is the structural representation of described radio-frequency generator 11, and described radio-frequency generator 11 comprises EMI filter circuit 21, rectifier 22, pfc circuit 23 and high-frequency inverter 24.Particularly, described EMI filter circuit 21 is suitable for reducing the high-frequency harmonic composition of described radio-frequency generator 11 to the impact of external circuit, suppresses external interference to affect the job stability of described HF lamp without electrodes simultaneously, improves the efficiency of whole electrical network; Described rectifier 22 is for realizing civil power to galvanic conversion; Described pfc circuit 23 comprises PFC inductance and control module, is suitable for realizing input current and follows input voltage change, improve power factor (PF); Described high-frequency inverter 24 is suitable for realizing the conversion of direct voltage to alternating voltage, and realizes the high frequency of operating frequency.
As previously mentioned, the ignition voltage of HF lamp without electrodes is at about 3000V.Ensure that described bulb 13 is lit, the inductance value of the PFC inductance in described pfc circuit 23 can not drop to the inductance value lower than demand when HF lamp without electrodes starts, otherwise the voltage that described radio-frequency generator 11 produces can reduce, and cannot light described bulb 13.Therefore, PFC inductance can only adopt the magnetic core of special substance, and can not replace with common magnetic core, the cost of HF lamp without electrodes is higher.
Utility model content
To be solved in the utility model is the problem that existing HF lamp without electrodes cost is higher.
For solving the problem, the utility model provides a kind of radio-frequency generator of HF lamp without electrodes, comprise EMI filter circuit, rectifier, pfc circuit and high-frequency inverter, described pfc circuit comprises control module and PFC inductance, described PFC inductance comprises toroidal core and is wrapped in the wire on described toroidal core, and described toroidal core has air gap.
Optionally, described air gap is even air gap.
Optionally, the thickness of described air gap is less than 1 millimeter.
Optionally, described air gap is non-homogeneous air gap.
Optionally, described air gap is slope air gap.
Optionally, described air gap is stepped air gap.
Optionally, described toroidal core is FERRITE CORE.
Optionally, described toroidal core is nickel-Zn ferrite magnetic core.
Based on above-mentioned radio-frequency generator, the utility model also provides a kind of HF lamp without electrodes, comprises power coupler and bulb, also comprises the radio-frequency generator of above-mentioned HF lamp without electrodes.
Compared with prior art, the utility model has the following advantages:
The HF lamp without electrodes that the utility model provides and radio-frequency generator thereof, by offering air gap on PFC inductance, increase the proof voltage peak value of PFC inductance, effectively reduce the requirement to the magnetic core material of PFC inductance when HF lamp without electrodes starts, even if adopt FERRITE CORE also can ensure that the inductance value of PFC inductance reaches the inductance value of demand when HF lamp without electrodes starts, thus common magnetic core can be adopted as the magnetic core of PFC inductance, reduce the cost of HF lamp without electrodes.
Accompanying drawing explanation
Fig. 1 is the structural representation of common HF lamp without electrodes;
Fig. 2 is the structural representation of the radio-frequency generator shown in Fig. 1;
Fig. 3 is the structural representation of the PFC inductance of the utility model embodiment.
Embodiment
Below in conjunction with embodiment and accompanying drawing, to the detailed description further of the utility model do, but execution mode of the present utility model is not limited thereto.
The utility model provides a kind of HF lamp without electrodes, and described HF lamp without electrodes comprises radio-frequency generator, power coupler and bulb.Described bulb is filled with inert gas and mercury vapour, and envelope inner wall is coated with fluorescent material.Described power coupler is arranged in described bulb, is made by magnetic material coiling wire.Described power coupler is identical with function and prior art with the concrete structure of bulb, with reference to the description to Fig. 1, can not repeat them here.
Described radio-frequency generator comprises EMI filter circuit, rectifier, pfc circuit and high-frequency inverter, and described pfc circuit comprises control module and PFC inductance.Particularly, described EMI filter circuit generally includes choke induction and filter capacitor; Described rectifier has bridge rectifier, half-wave rectifying circuit and full-wave rectifying circuit etc. usually; Described high-frequency inverter has flyback inverter, push-pull dc-to-ac, full-bridge inverter and semi-bridge type inverter etc. usually; Described control module comprises control IC and switching device, and described switching device is generally metal-oxide-semiconductor, and according to the difference of control mode, described control IC has current peak control IC, circuit Hysteresis control IC and Average Current Control IC usually.The structure and fuction of described EMI filter circuit, described rectifier, described high-frequency inverter and described control module is all identical with prior art, with reference to the description to Fig. 2, can not repeat them here.
Fig. 3 is the structural representation of the PFC inductance of the utility model embodiment, and described PFC inductance comprises toroidal core 31 and wire 32.Particularly, described toroidal core 31 can be FERRITE CORE, and further, can be nickel-Zn ferrite magnetic core, described wire 32 be wrapped on described toroidal core 31 equably.The material of described toroidal core 31 and the winding mode of described wire 32 can be arranged according to the actual requirements, and the utility model is not construed as limiting this.Described toroidal core 31 has air gap 33, in the present embodiment, and the even air gap that described air gap 33 is less than 1 millimeter for thickness.Certainly, in other embodiments, described air gap 33 also can be non-homogeneous air gap, such as slope air gap, stepped air gap etc.
The HF lamp without electrodes that the utility model provides, by offering described air gap 33 on described toroidal core 31, the proof voltage peak value of described PFC inductance can be increased, effectively reduce the requirement to the magnetic core material of described PFC inductance when HF lamp without electrodes starts, even if adopt FERRITE CORE also can ensure that the inductance value of described PFC inductance reaches the inductance value of demand when HF lamp without electrodes starts, thus common magnetic core can be adopted as the magnetic core of described PFC inductance, reduce the cost of HF lamp without electrodes.
The above; it is only preferred embodiment of the present utility model; not do any pro forma restriction to the utility model, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present utility model, all falls within protection range of the present utility model.
Claims (9)
1. the radio-frequency generator of a HF lamp without electrodes, comprise EMI filter circuit, rectifier, pfc circuit and high-frequency inverter, it is characterized in that, described pfc circuit comprises control module and PFC inductance, described PFC inductance comprises toroidal core and is wrapped in the wire on described toroidal core, and described toroidal core has air gap.
2. the radio-frequency generator of HF lamp without electrodes according to claim 1, is characterized in that, described air gap is even air gap.
3. the radio-frequency generator of HF lamp without electrodes according to claim 2, is characterized in that, the thickness of described air gap is less than 1 millimeter.
4. the radio-frequency generator of HF lamp without electrodes according to claim 1, is characterized in that, described air gap is non-homogeneous air gap.
5. the radio-frequency generator of HF lamp without electrodes according to claim 4, is characterized in that, described air gap is slope air gap.
6. the radio-frequency generator of HF lamp without electrodes according to claim 4, is characterized in that, described air gap is stepped air gap.
7. the radio-frequency generator of HF lamp without electrodes according to claim 1, is characterized in that, described toroidal core is FERRITE CORE.
8. the radio-frequency generator of HF lamp without electrodes according to claim 7, is characterized in that, described toroidal core is nickel-Zn ferrite magnetic core.
9. a HF lamp without electrodes, comprises power coupler and bulb, it is characterized in that, also comprises the radio-frequency generator of the HF lamp without electrodes described in any one of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520263909.6U CN204518194U (en) | 2015-04-28 | 2015-04-28 | HF lamp without electrodes and radio-frequency generator thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520263909.6U CN204518194U (en) | 2015-04-28 | 2015-04-28 | HF lamp without electrodes and radio-frequency generator thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204518194U true CN204518194U (en) | 2015-07-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520263909.6U Expired - Fee Related CN204518194U (en) | 2015-04-28 | 2015-04-28 | HF lamp without electrodes and radio-frequency generator thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204518194U (en) |
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2015
- 2015-04-28 CN CN201520263909.6U patent/CN204518194U/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: 20150729 |