CN201311913Y - Low-voltage electrodeless discharge lamp - Google Patents
Low-voltage electrodeless discharge lamp Download PDFInfo
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- CN201311913Y CN201311913Y CNU2008201795364U CN200820179536U CN201311913Y CN 201311913 Y CN201311913 Y CN 201311913Y CN U2008201795364 U CNU2008201795364 U CN U2008201795364U CN 200820179536 U CN200820179536 U CN 200820179536U CN 201311913 Y CN201311913 Y CN 201311913Y
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- magnet
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- lamp
- cylindrical cavity
- pressure discharging
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Abstract
A low-voltage electrodeless discharge lamp comprises a lamp housing (1); the lamp housing is sealed in an air-tight manner, mercury and rare gas are contained in the housing, and a cavity (2) is formed in the housing. The low-voltage electrodeless discharge lamp is characterized in that the cavity is a ladder-shaped cavity formed by a first cylindrical cavity (21) and a second cylindrical cavity (22); the pore diameter of the first cylindrical cavity is smaller than that of the second cylindrical cavity; a loop (3) and a first magnet (5) are arranged in the first cylindrical cavity; a second magnet (6) is arranged in the second cylindrical cavity; and the cross section size of the first cylindrical cavity is smaller than that of the second cylindrical cavity. The utility model has the characteristics of less electromagnetic interference, high coupling efficiency, compact structure, low cost, etc.
Description
Technical field
The utility model relates to discharge lamp, particularly a kind of electrodeless low-pressure discharging lamp.
Background technology
The applicant has submitted to Patent Office of State Intellectual Property Office on April 1st, 2008 that to theme as electrodeless electromagnetic lamp, number of patent application be 200810091873.2 patent application to.This patent application has disclosed so a kind of electrodeless low-pressure discharging lamp, this kind discharge lamp, comprise: lamp housing, this lamp housing is closed in airtight mode, it contains mercury and rare gas, one cavity is arranged in the lamp housing, be provided with the coil and first magnet in cavity, the end that has the cavity outlet at lamp housing also is provided with second magnet.This kind discharge lamp has significantly reduced the electromagnetic interference of discharge lamp owing to the existence of second magnet, reaches the relevant criterion of electromagnetic compatibility easily.But this kind discharge lamp, the size of required second magnet is bigger, has increased cost, and structure is not compact, is necessary to improve.
Summary of the invention
The purpose of this utility model is that a kind of improved compact conformation, lower-cost electrodeless low-pressure discharging lamp will be provided; Another purpose of the present utility model is to improve the coupling efficiency of lamp.
In order to achieve the above object, the utility model adopts following technical scheme: according to the utility model, electrodeless low-pressure discharging lamp, comprise: lamp housing, this lamp housing is closed in airtight mode, it contains mercury and rare gas, one cavity is arranged in lamp housing, it is characterized in that, described cavity is a stairstepping cavity that is made of first cylindrical cavity and second cylindrical cavity, and the aperture size of first cylindrical cavity is provided with the coil and first magnet less than the aperture size of second cylindrical cavity in first cylindrical cavity, be provided with second magnet in second cylindrical cavity, the cross sectional dimensions of first magnet is less than the cross sectional dimensions of second magnet.
Described second magnet can be directly fixing with described first magnet, also can fix by connector; One end of described first magnet is fixed in the middle part of described second magnet usually.
Described second magnet can be the magnet of disc-shaped structure, also can adopt the magnet of other structure; One or more rooms or breach can be set, so that fixing or line on second magnet.When described second magnet was the magnet of disc-shaped structure, the central axis direction of the magnet of its disc-shaped structure was preferably consistent with the central axis direction of described cavity.
Described first magnet can be a cylindrical magnet, can be the cylindrical magnet of hollow, can also be the magnet of other shape, and this is that everybody is known.
In order to make described lamp housing when discharging, send fluorescence, on the wall fluorescence coating can be set within it, in order to obtain ultraviolet light, fluorescence coating is not set on the wall within it.
The utlity model has following good effect: owing to have a stairstepping cavity in the lamp housing, the second used magnet is arranged in the stairstepping cavity, and its size is less, and the price of magnet is more expensive, thereby has reduced cost; Secondly this kind setting makes the more compact structure of whole discharge lamp; Moreover, because second magnet is arranged in the stairstepping cavity, can more effective shielding from the electromagnetic interference of cavity center portion, because good more with near more its shield effectiveness of the distance of electromagnetic interference source; In addition, second magnet that is arranged on this place has been strengthened the interior electromagnetic field of lamp housing very effectively, has significantly improved the coupling efficiency of lamp.
Description of drawings
Fig. 1 is the schematic diagram of the electrodeless low-pressure discharging lamp of prior art;
Fig. 2 is the schematic diagram of first embodiment of electrodeless low-pressure discharging lamp of the present utility model;
Fig. 3 is the schematic diagram of second embodiment of electrodeless low-pressure discharging lamp of the present utility model;
Fig. 4 is the schematic diagram of the 3rd embodiment of electrodeless low-pressure discharging lamp of the present utility model;
Fig. 5 is the schematic diagram of the 4th embodiment of electrodeless low-pressure discharging lamp of the present utility model;
Fig. 6 is the schematic diagram of the 5th embodiment of electrodeless low-pressure discharging lamp of the present utility model;
Fig. 7 is the schematic diagram of the 6th embodiment of electrodeless low-pressure discharging lamp of the present utility model;
Fig. 8 is the schematic diagram of another embodiment of electrodeless low-pressure discharging lamp of the present utility model.
Embodiment
Fig. 1 shows the schematic diagram of the electrodeless low-pressure discharging lamp of prior art.As seen from the figure, this kind discharge lamp, comprise: lamp housing 1, this lamp housing is closed in airtight mode, and contain mercury and rare gas, a cavity 2 is arranged in the lamp housing, this cavity is a cylindrical cavity, be provided with the coil 3 and first magnet 5 in cavity 2, the end that has the cavity outlet at lamp housing also is provided with second magnet 6.Utility alternating current enters from lamp holder, the radio-frequency power supply 4 that is connected with lamp holder produces high-frequency current, the power coupling device of this high-frequency current by being constituted by the coil 3 and first magnet 5, make mercury and rare gas in the lamp housing 1 produce discharge, the ultraviolet ray that is produced can be converted into visible light by the fluorescence coating that is arranged on lamp housing 1 inwall.This kind lamp is because the existence of second magnet, effectively shielded from lamp housing to have the electromagnetic interference that the cavity exit spills, and makes it reach the relevant criterion of electromagnetic compatibility easily.But the size of the second required magnet is bigger, and the price of magnet is higher, has brought higher cost; In addition, second magnet is arranged on the end of cavity outlet, and its structure is not compact.
Fig. 2 shows first embodiment of electrodeless low-pressure discharging lamp of the present utility model.As seen from the figure, discharge lamp of the present utility model, comprise: lamp housing 1, this lamp housing is closed in airtight mode, contain mercury and rare gas, a stairstepping cavity 2 is arranged in lamp housing, this cavity is made of first cylindrical cavity 21 and second cylindrical cavity 22, the aperture size of first cylindrical cavity 21 is less than the aperture size of second cylindrical cavity 22, in first cylindrical cavity, be provided with the coil 3 and first magnet 5, in second cylindrical cavity, be provided with the cross sectional dimensions of the cross sectional dimensions of second magnet, 6, the first magnets less than second magnet.When discharge lamp work of the present utility model,, make it pass through the authentication of EMC relevant criterion easily because the existence of second magnet 6 can more effectively shield the electromagnetic interference from stairstepping cavity 2 central parts; Other second magnet 6 is arranged in the stairstepping cavity 2, and its structure is very compact, and has significantly strengthened the electromagnetic field in the lamp housing, has improved the coupling efficiency of lamp.
Fig. 3 shows second embodiment of electrodeless low-pressure discharging lamp of the present utility model.As seen from the figure, first magnet 5 of this electrodeless low-pressure discharging lamp is the cylindrical magnet of hollow, first magnet 5 has a cylindrical cavity 7 in the centre, second magnet 6 is a disc shaped magnet, at the middle part of this disc shaped magnet one cylindrical cavity (not drawing among the figure) is arranged also, an end of first magnet 5 is fixed in the middle part of second magnet 6.Usually, first magnet 5 and second magnet 6 can be fired into one by mould.
Fig. 4 shows the 3rd embodiment of electrodeless low-pressure discharging lamp of the present utility model.As seen from the figure, this embodiment is very similar to embodiment shown in Figure 3, and just second magnet 6 of present embodiment also is provided with position, a hole 8 thereon.
Fig. 5 shows the 4th embodiment of electrodeless low-pressure discharging lamp of the present utility model.As seen from the figure, this embodiment is also very similar to embodiment shown in Figure 3, and just second magnet 6 of present embodiment is provided with a breach 9 near its edge.
Fig. 6 shows the 5th embodiment of electrodeless low-pressure discharging lamp of the present utility model.As seen from the figure, first magnet 5 of this electrodeless low-pressure discharging lamp is a cylindrical magnet, and second magnet 6 is a disc shaped magnet, and an end of first magnet 5 is fixed in the middle part of second magnet 6.
Fig. 7 shows the 6th embodiment of electrodeless low-pressure discharging lamp of the present utility model.As seen from the figure, first magnet 5 of this electrodeless low-pressure discharging lamp is the cylindrical magnet of hollow, and second magnet 6 is the disc shaped magnet of hollow, and first magnet 5 is fixing by a connection piece 10 and second magnet 6.
Fig. 8 shows another embodiment of electrodeless low-pressure discharging lamp of the present utility model.As seen from the figure, this embodiment is very similar to embodiment shown in Figure 2, and just the lamp housing 1 of present embodiment is provided with blast pipe 11 in its cavity 2.
Although showed and described and thought preferred embodiment of the present utility model at present, apparent, those skilled in the art can carry out various changes and improvements, and does not deviate from the scope of the present utility model that is limited by appended claims.
Claims (10)
1, a kind of electrodeless low-pressure discharging lamp, comprise: lamp housing (1), this lamp housing is closed in airtight mode, it contains mercury and rare gas, one cavity (2) is arranged in lamp housing, it is characterized in that, described cavity (2) is a stairstepping cavity that is made of first cylindrical cavity (21) and second cylindrical cavity (22), the aperture size of first cylindrical cavity is less than the aperture size of second cylindrical cavity, in first cylindrical cavity, be provided with coil (3) and first magnet (5), be provided with second magnet (6) in second cylindrical cavity, the cross sectional dimensions of first magnet is less than the cross sectional dimensions of second magnet.
2, electrodeless low-pressure discharging lamp as claimed in claim 1 is characterized in that, described second magnet (6) is directly fixing with described first magnet (5).
3, electrodeless low-pressure discharging lamp as claimed in claim 1 is characterized in that, described second magnet (6) is a disc shaped magnet.
4, electrodeless low-pressure discharging lamp as claimed in claim 1 is characterized in that, described second magnet (6) is for having the disc shaped magnet of at least one position, hole (8).
5, electrodeless low-pressure discharging lamp as claimed in claim 1 is characterized in that, described lamp housing (1) wall within it is provided with fluorescence coating.
6, electrodeless low-pressure discharging lamp as claimed in claim 1 is characterized in that, described first magnet (5) is a cylindrical magnet.
7, electrodeless low-pressure discharging lamp as claimed in claim 1 is characterized in that, described first magnet (5) is the cylindrical magnet of hollow.
8, electrodeless low-pressure discharging lamp as claimed in claim 1 is characterized in that, described second magnet (6) is a disc shaped magnet, and the central axis direction of its disc shaped magnet is consistent with the central axis direction of described cavity (2).
9, electrodeless low-pressure discharging lamp as claimed in claim 1 is characterized in that, described second magnet (6) is fixing by connector (10) with described first magnet (5).
As the described electrodeless low-pressure discharging lamp of one of claim 1 to 8, it is characterized in that 10, an end of described first magnet (5) is fixed in the middle part of described second magnet (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201795364U CN201311913Y (en) | 2008-11-28 | 2008-11-28 | Low-voltage electrodeless discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201795364U CN201311913Y (en) | 2008-11-28 | 2008-11-28 | Low-voltage electrodeless discharge lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201311913Y true CN201311913Y (en) | 2009-09-16 |
Family
ID=41109168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201795364U Expired - Fee Related CN201311913Y (en) | 2008-11-28 | 2008-11-28 | Low-voltage electrodeless discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201311913Y (en) |
-
2008
- 2008-11-28 CN CNU2008201795364U patent/CN201311913Y/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090916 Termination date: 20091228 |