CN203492255U - Electrodeless lamp ballast with electromagnetic screen - Google Patents
Electrodeless lamp ballast with electromagnetic screen Download PDFInfo
- Publication number
- CN203492255U CN203492255U CN201320484427.4U CN201320484427U CN203492255U CN 203492255 U CN203492255 U CN 203492255U CN 201320484427 U CN201320484427 U CN 201320484427U CN 203492255 U CN203492255 U CN 203492255U
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- CN
- China
- Prior art keywords
- electrodeless lamp
- lamp ballast
- circuit
- electronic ballast
- electromagnetic screen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Circuit Arrangements For Discharge Lamps (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model discloses an electrodeless lamp ballast with an electromagnetic screen, which belongs to the field of electric light sources. The electrodeless lamp ballast comprises an electrodeless lamp ballast printed circuit board and a shielding unit. The electrodeless lamp ballast printed circuit board is composed of a PFC power supply circuit, an auxiliary power supply circuit, a chip half-bridge drive circuit, a half-bridge circuit, a protection circuit and a start-up circuit. The electrodeless lamp ballast is characterized in that a metal radome is covered on an EMC filtering inductor of the PFC power supply circuit of the electrodeless lamp ballast. One or more than two sets of inductors and capacitors are closed in a metal box. The shielding unit is composed of an upper cover and a radome base. The radome base is provided with a plurality of heat dissipation holes. The shell of the metal radome is grounded. According to the technical scheme of the utility model, the electrodeless lamp ballast with the electromagnetic screen has the advantages of good electromagnetic shielding effect, simple process, low cost and the like.
Description
Technical field
The utility model relates to a kind of lighting apparatus in electric light source field, and specifically, the utility model is a kind of electronic ballast for electrodeless lamp with electromagnetic screen.
Background technology
Non-polarized lamp be the 4th generation illuminating product new type light source, Non-polarized lamp is the abbreviation without filament, electrode-less gas discharge fluorescent lamp.Non-polarized lamp is a kind of new type light source based on fluorescent tube gas discharges and two principles of high-frequency electromagnetic induction combine, and is the more recent application technology in 21 century " green illumination " field.Non-polarized lamp mainly comprises electronic ballast of high-frequency electrodeless lamp and with the foam of coupler, electronic ballast of electrodeless lamp is in operation and can produces high-frequency electromagnetic induction, to there is certain electromagnetic interference in the environment of place, affect the operation of miscellaneous equipment and environment is caused to electromagnetic pollution, in order to control electromagnetism conduction and radiated interference, again screening arrangement must be installed, this causes thermal resistance to increase, and affects radiating effect.Current more existing other electronic ballast of electrodeless lamps, most of only consideration heat radiation requirement, fail to adopt shielding design, can not meet EMC Requirements, or adopt shielding design but can not effectively reduce the temperature of electronic ballast of high-frequency electrodeless lamp inside and affect reliability.
Summary of the invention
The purpose of the present utility model is to overcome the deficiencies in the prior art, and a kind of electronic ballast for electrodeless lamp with electromagnetic screen is provided.
The utility model is achieved through the following technical solutions:
A kind of electronic ballast for electrodeless lamp with electromagnetic screen, comprise electronic ballast for electrodeless lamp printed circuit board (PCB) and screening arrangement, electronic ballast for electrodeless lamp printed circuit board (PCB) is by PFC power-supplying circuit, accessory power supply power supply circuits, chip half-bridge drive circuit, half-bridge circuit, protective circuit and start-up circuit form, it is characterized in that: on the EMC filter inductance device of the PFC of electronic ballast of electrodeless lamp power-supplying circuit part, add metallic shield, the inductance of one or two or more sets of and electric capacity are enclosed in can, described screening arrangement is comprised of upper cover and radome base, on radome base, there are a plurality of louvres, the metallic shield earthing of casing, what more effective inhibition conduction and radiated interference had been believed leaks, improve EMC test performance index, meet the requirement of national testing standard 3CCC, described screening arrangement adopts aluminum material to make.
The present utility model compared with prior art has following beneficial effect:
1. shield effectiveness is good, meets national testing standard;
2. technique is simple, cost is low.
Accompanying drawing explanation
Fig. 1 is the electronic ballast for electrodeless lamp structure principle chart with electromagnetic screen.
Embodiment
Below in conjunction with accompanying drawing, content of the present utility model is described further:
If figure is the electronic ballast for electrodeless lamp structure principle chart with electromagnetic screen, for improving the problem of the application Electro Magnetic Compatibility index of electronic ballast of electrodeless lamp, EMC filter inductance device at the PFC of electronic ballast of electrodeless lamp power unit, add that metallic shield is the inductance of one or two or more sets of and X electric capacity, the safety electric capacity such as Y electric capacity, be enclosed in can, more effective placement conduction and radiated interference are believed and are leaked, improve EMC test performance index, smoothly by concerned countries testing standard 3CCC requirement; Screening arrangement is a can, adopts aluminum material to make, the metallic shield earthing of casing, and what more effective inhibition conduction and radiated interference had been believed leaks, and for improving heat dispersion, has a plurality of louvres on radome base.
Claims (2)
1. an electronic ballast for electrodeless lamp with electromagnetic screen, comprise electronic ballast for electrodeless lamp printed circuit board (PCB) and screening arrangement, electronic ballast for electrodeless lamp printed circuit board (PCB) is by PFC power-supplying circuit, accessory power supply power supply circuits, chip half-bridge drive circuit, half-bridge circuit, protective circuit and start-up circuit form, it is characterized in that: on the EMC filter inductance device of the PFC of electronic ballast of electrodeless lamp power-supplying circuit part, add metallic shield, the inductance of one or two or more sets of and electric capacity are enclosed in can, described screening arrangement is comprised of upper cover and radome base, on radome base, there are a plurality of louvres, the metallic shield earthing of casing.
2. the electronic ballast for electrodeless lamp with electromagnetic screen according to claim 1, is characterized in that: described screening arrangement adopts aluminum material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320484427.4U CN203492255U (en) | 2013-08-07 | 2013-08-07 | Electrodeless lamp ballast with electromagnetic screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320484427.4U CN203492255U (en) | 2013-08-07 | 2013-08-07 | Electrodeless lamp ballast with electromagnetic screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203492255U true CN203492255U (en) | 2014-03-19 |
Family
ID=50263048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320484427.4U Expired - Fee Related CN203492255U (en) | 2013-08-07 | 2013-08-07 | Electrodeless lamp ballast with electromagnetic screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203492255U (en) |
-
2013
- 2013-08-07 CN CN201320484427.4U patent/CN203492255U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140319 Termination date: 20140807 |
|
| EXPY | Termination of patent right or utility model |