CN2888641Y - Electric arc tube for porcelain metal halide lamp - Google Patents
Electric arc tube for porcelain metal halide lamp Download PDFInfo
- Publication number
- CN2888641Y CN2888641Y CN 200520046429 CN200520046429U CN2888641Y CN 2888641 Y CN2888641 Y CN 2888641Y CN 200520046429 CN200520046429 CN 200520046429 CN 200520046429 U CN200520046429 U CN 200520046429U CN 2888641 Y CN2888641 Y CN 2888641Y
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- ceramic
- metal halide
- arc tube
- halide lamp
- electrode
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Abstract
The utility model belongs to the field of electric light source technology, in particular to an arc tube structure of metal halide lamp with ceramic arc tube, wherein the discharge cavity is made of the sintering of a translucent polycrystalline alumina ceramic tube of straight tube model and the ceramic seals of two terminals. The medial side of the ceramic seals is shaped into pyramid or cone and the lateral side has a circular groove which fits a molybdenum sheet of an electrode assembly in size to locate the electrode accurately and realize hermetic sealing. The ceramic seals further realize hermetic sealing with a ceramic cap of posterior part. Both the centers of the ceramic seals and the ceramic cop leave keyholes to be inserted with the electrode assembly and the discharge cavity is filled with starting gas, mercury and a polarity of metal halide according to different spectrum requirements. The metal halide lamp is characterized in that: the photoelectric properties are obviously better than that of metal halide lamp with quartz arc tube and the metal halide lamp is particularly suitable for the production of the metal halide lamp with ceramic arc tube of media and high power.
Description
Technical field
The utility model belongs to the electric light source technology field, is specifically related to a kind of electric arc tube structure of metal halide lamp.
Background technology
Metal halide lamp adopts quartzy arctube material as metal halide lamp usually.Under the working temperature of lamp, because quartzy meeting and some chemical reaction of metal halide deposits yields of filling and the seepage of alkali metal ion cause the loss of luminescent substance and the surplus of halogen.The existence of above-mentioned phenomenon makes the photochromic stability of quartz metal halide lamp, light output maintenance, and indexs such as starting characteristic and life-span obviously worsen, thus the use that has limited this lamp is promoted.
Polycrystalline alumina ceramic has good chemical stability, and at high temperature it with metal halide tangible chemical process does not take place.Substitute the metal halide lamp that quartz ampoule is made with translucent alumina ceramic tube, not only can overcome the shortcoming that quartz metal halide lamp exists, and because of allowing higher working temperature to make raising (15-20) % of the luminous efficiency of lamp than quartz metal halide lamp.Ceramic metal halide lamp has high stability, and the characteristics of long-life and high light efficiency are the high intensity discharge light sources that illuminating effect is best in the lighting source, energy-saving effect is best and the use prospect is best.The research and development of ceramic metal helide lamp and industrialization are set up conservation-minded society to China and are significant.
Summary of the invention
The purpose that the utility model proposes is to propose a kind of good stability, light efficiency height, the structure of the ceramic metal halide lamp arc tube of long service life.
The ceramic metal halide lamp arc tube of the utility model design is made up of the ceramic discharge chamber and the pair of electrodes of enclosing in it, is filled with startup gas, mercury in the discharge cavity and as some kinds of metal halides of luminescent substance; Pair of electrodes is drawn by conductor wire respectively, and realizes the hermetic seal of plain conductor and ceramic discharge cavity with glass solder.
In the utility model, the ceramic discharge chamber is packaged on the aluminium oxide ceramics plug 2 and 3 of the symmetry at alumina ceramic tube 1 two ends by straight pipe type earthenware 1, and the aluminium oxide ceramics cap 6 of symmetry and 7 is formed.The top that ceramic plug 2 and 3 stretches in the earthenware 1 partly is tapered or pyramid type in 4 inboards, and its end (outside) has a circular groove 5 that supplies the keeper electrode assembly to use, and the centre has for the centre bore 13 of putting into electrode; The ceramic cap 6 and 7 of symmetry is packaged on the two ends of two ceramic plugs 2 and 3 respectively, and its end (i.e. the outside) is connected with elongated tail pipe 8 by the pyramid type transitional cylinder, and the centre has for the centre bore 14 that inserts contact conductor.
In the utility model, after earthenware and the compression moulding of ceramic plug difference,, adopt the method that is connected of interference at high temperature to sinter an integral body into through the biscuiting cutting.
In the utility model, electrode assemblie is made up of niobium bar or niobium silk 9, molybdenum sheet 10 and electrode tip 11, fuses by method for laser welding on the central point of two end faces of molybdenum sheet respectively as the niobium bar (silk) and the electrode tip of contact conductor.The molybdenum sheet of electrode assemblie is put into the circular groove 5 of two ceramic plug ends respectively, the diameter and the thickness of the diameter of circular groove 5 and the degree of depth and molybdenum sheet 10 match each other, play the accurate location of electrode thus, electrode niobium bar 9 penetrates in the centre bore 13 and centre bore 14 of ceramic plug and ceramic cap. Ceramic plug 2 and 3 and molybdenum sheet 10 between realize hermetic seals by rare earth oxide glass solder 12, ceramic cap 6 becomes hermetic seal with earthenware 1 by rare earth oxide or alkaline-earth oxide glass solder with 7, between last niobium bar (silk) 9 and the ceramic cap thin tube part branch also by rare earth oxide solder glass realization hermetic seal.
Further, the input power range of ceramic metal helide lamp of the present utility model is 20 watts to 2000 watts.
The taper of ceramic plug front end or conical structure can play the effect of the cold junction temperature that can improve lamp, thereby reach the effect that improves light efficiency and color rendering.The ceramic plug end leaves the circular groove that the molybdenum sheet size with electrode assemblie is complementary, and has positioning of electrode and takes on the function in hermetic seal district.
The rear end part of ceramic cap is partly formed one by circular-arc transitional cylinder and tubule.
Electrode is realized and pottery hermetic seal partly by the mode of three road glass solders.This blocking-up type sealing structure can effectively prevent halid seepage.
The design of ceramic plug integral body has guaranteed minimum thermal losses and reliable sealing-in air-tightness.
The circle center hole diameter of ceramic plug can be equal to or greater than the circle center hole of ceramic cap, guarantees that the insertion of high-power lamp electrode needs.
Description of drawings
Fig. 1 is the structural representation of ceramic metal halide lamp arc tube in the utility model.
Fig. 2 is an electrode structure schematic diagram in the utility model.
Fig. 3 is the structural representation of ceramic cavity in the utility model.
Number in the figure: 1 is the translucent alumina ceramics pipe, and 2 and 3 are respectively the ceramic plug of symmetrical configuration, and 4 is the top part of earthenware, 5 is the circular groove of ceramic plug end, and 6 and 7 is the ceramic cap of symmetry, and 8 is elongated tail pipe, 9 is niobium bar (silk), 10 is molybdenum sheet, and 11 is electrode tip, and 12 is the rare earth oxide glass solder, 13 is the ceramic plug centre bore, 14 is the ceramic cap centre bore, and 15 is the Laser Welding contact, and 16 is glass solder.
Embodiment
250 of structure watts of ceramic metal halide lamp arc tubes have semi-transparent polycrystal aluminium oxide earthenware 1 as shown in Figure 1, and its intracavity diameter is 9.6 ± 0.2mm, and wall thickness is 1.5 ± 0.1mm, and length is 46 ± 0.5mm. Ceramic plug 2 and 3 total length are 6 ± 0.2mm, and its inboard is tapered, and tapering is 50 ° ± 2 °; The diameter of its end (outside) circular groove is 5 ± 0.5mm, and the degree of depth is 0.5mm; The diameter 13 of middle circular hole 13 is 2.5 ± 0.1mm.Ceramic cap 6 and 7 length overall are 10 ± 0.2mm, and the length that wherein stretches into earthenware 1 is 2 ± 0.1mm, and the diameter of center hole 14 is 1.5 ± 0.1mm.In fill the halide 15 ± 0.5g of metals such as Dy, Ho, Tm, Tl, Na and Cs, mercury 23 ± 0.5g, and the gaseous mixture 5KPa of Kr85 and Ar adopt three road glass solder methods to realize hermetic seals.The arc length of the electric arc tube that forms is 30 ± 0.5mm, and length overall is 62 ± 1mm.Colour temperature 5500 ± the 200K of this lamp, color rendering index 92 ± 2, light efficiency 110 ± 5Lm/W.
Claims (5)
1, a kind of ceramic metal halide lamp arc tube is characterized in that being made up of the polycrystalline alumina ceramic discharge cavity and the pair of electrodes of enclosing in it, is filled with startup gas, mercury in the discharge cavity and as some kinds of metal halides of luminescent substance; Pair of electrodes is drawn by conductor wire respectively, and realizes the hermetic seal of plain conductor and ceramic discharge cavity with glass solder.
2, ceramic metal halide electric arc tube according to claim 1, it is characterized in that the ceramic discharge chamber by straight pipe type polycrystalline alumina ceramic pipe (1), be packaged on polycrystalline alumina ceramic plug (2) and (3) of the symmetry at these straight pipe type polycrystalline alumina ceramic pipe (1) two ends, and the aluminium oxide ceramics cap of symmetry is formed; The top that ceramic plug (2) and (3) are stretched in the earthenware (1) partly is tapered or pyramid type in (4) inboard, and its end has a circular groove (5) that supplies the keeper electrode assembly to use, and the centre has for the centre bore (13) of putting into electrode; The two ends that the ceramic cap (6) of symmetry and (7) are packaged on two ceramic plugs (2) and (3) respectively, its end is connected with elongated tail pipe (8) by the pyramid type transitional cylinder, and the centre has for the centre bore (14) that inserts contact conductor.
3, ceramic metal halide electric arc tube according to claim 1, it is characterized in that electrode assemblie is made up of niobium bar or niobium silk (9), molybdenum sheet (10) and electrode tip (11), on the central point of two end faces of molybdenum sheet, fuse respectively by method for laser welding as the niobium bar and the electrode tip of contact conductor; The molybdenum sheet of electrode assemblie is put into the circular groove (5) of two ceramic plug ends respectively, the diameter and the thickness of the diameter of circular groove (5) and the degree of depth and molybdenum sheet (10) match each other, play the accurate location of electrode thus, electrode niobium bar (9) penetrates in the centre bore (13) and centre bore (14) of ceramic base and ceramic cap.
4, ceramic metal halide electric arc tube according to claim 1, it is characterized in that realizing hermetic seal by rare earth oxide glass solder (12) between ceramic plug (2) and (3) and the molybdenum sheet (10), ceramic cap (6) becomes hermetic seal with earthenware (1) by rare earth oxide or alkaline-earth oxide glass solder with (7), between last niobium bar (9) divides with the ceramic cap thin tube part also by rare earth oxide solder glass realization hermetic seal.
5, ceramic metal halide electric arc tube according to claim 1 is characterized in that power is 20 watts to 2000 watts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520046429 CN2888641Y (en) | 2005-11-10 | 2005-11-10 | Electric arc tube for porcelain metal halide lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520046429 CN2888641Y (en) | 2005-11-10 | 2005-11-10 | Electric arc tube for porcelain metal halide lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2888641Y true CN2888641Y (en) | 2007-04-11 |
Family
ID=38047212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520046429 Expired - Fee Related CN2888641Y (en) | 2005-11-10 | 2005-11-10 | Electric arc tube for porcelain metal halide lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2888641Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101901735A (en) * | 2010-07-26 | 2010-12-01 | 潮州市晨歌电光源有限公司 | Electrode assembly |
| CN101527250B (en) * | 2008-03-03 | 2012-07-25 | 优志旺电机株式会社 | Short arc type high voltage discharge lamp |
| CN102623277A (en) * | 2012-04-14 | 2012-08-01 | 朱惠冲 | Ceramic metal halide electrode melt-sealing positioning method and structure |
-
2005
- 2005-11-10 CN CN 200520046429 patent/CN2888641Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101527250B (en) * | 2008-03-03 | 2012-07-25 | 优志旺电机株式会社 | Short arc type high voltage discharge lamp |
| CN101901735A (en) * | 2010-07-26 | 2010-12-01 | 潮州市晨歌电光源有限公司 | Electrode assembly |
| CN102623277A (en) * | 2012-04-14 | 2012-08-01 | 朱惠冲 | Ceramic metal halide electrode melt-sealing positioning method and structure |
| CN102623277B (en) * | 2012-04-14 | 2016-03-09 | 朱惠冲 | Ceramic metal halogen lamp pole sealing by fusing location structure |
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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: 20070411 Termination date: 20091210 |