CN1761028A - Electric arc tube of ceramic metal halide lamp - Google Patents
Electric arc tube of ceramic metal halide lamp Download PDFInfo
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- CN1761028A CN1761028A CN 200510110260 CN200510110260A CN1761028A CN 1761028 A CN1761028 A CN 1761028A CN 200510110260 CN200510110260 CN 200510110260 CN 200510110260 A CN200510110260 A CN 200510110260A CN 1761028 A CN1761028 A CN 1761028A
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Abstract
本发明属电光源技术领域，具体为一种陶瓷金属卤化物灯的电弧管结构，其放电腔用半透明的直管型多晶氧化铝陶瓷管和两端的陶瓷塞整体烧结而成。陶瓷塞内侧呈锥状或圆锥状，陶瓷塞外侧有与电极组件的钼片尺寸相匹配的圆槽，使电极准确定位和实现气密封接。陶瓷塞与后部的陶瓷帽实现进一步的气密封接。陶瓷塞和陶瓷帽的中心都留有小孔，供插入电极组件，放电腔内填充有启动气体、汞和根据不同光谱要求的若干种金属卤化物。根据本发明制造的金属卤化物灯，其光电性能明显优于石英金属卤化物灯，特别适用于中大功率陶瓷金属卤化物灯的生产。
The invention belongs to the technical field of electric light sources, and specifically relates to an arc tube structure of a ceramic metal halide lamp. The discharge cavity is integrally sintered with translucent straight-tube polycrystalline alumina ceramic tubes and ceramic plugs at both ends. The inner side of the ceramic plug is conical or conical, and the outer side of the ceramic plug has a circular groove matching the size of the molybdenum sheet of the electrode assembly, so that the electrode can be positioned accurately and hermetically sealed. A ceramic plug provides a further hermetic seal with the ceramic cap at the rear. There is a small hole in the center of the ceramic plug and ceramic cap for inserting the electrode assembly, and the discharge chamber is filled with starting gas, mercury and several metal halides according to different spectral requirements. The photoelectric performance of the metal halide lamp manufactured according to the invention is obviously better than that of the quartz metal halide lamp, and is especially suitable for the production of medium and high power ceramic metal halide lamps.
Description
Technical field
The invention belongs to the electric light source technology field, be 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 present invention 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 present invention 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.
Among the present invention, 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 garden 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.
Among the present invention, 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.
Among the present invention, 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 invention 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 among the present invention.
Fig. 2 is electrode structure schematic diagram among the present invention.
Fig. 3 is the structural representation of ceramic cavity among the present invention.
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 Kr
85With the gaseous mixture 5KPa of Ar, adopt three road glass solder methods to realize hermetic seal.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 earthenware 1, be packaged on polycrystalline alumina ceramic plug (2) and (3) of the symmetry at 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 garden 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 |
|---|---|---|---|
| CNB2005101102605A CN100431088C (en) | 2005-11-10 | 2005-11-10 | Arc Tubes for Ceramic Metal Halide Lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101102605A CN100431088C (en) | 2005-11-10 | 2005-11-10 | Arc Tubes for Ceramic Metal Halide Lamps |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1761028A true CN1761028A (en) | 2006-04-19 |
| CN100431088C CN100431088C (en) | 2008-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101102605A Expired - Fee Related CN100431088C (en) | 2005-11-10 | 2005-11-10 | Arc Tubes for Ceramic Metal Halide Lamps |
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| CN (1) | CN100431088C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109243940A (en) * | 2018-09-28 | 2019-01-18 | 贵州宇光鸿宇电气照明科技有限公司 | A kind of electrode sealing location structure for ceramic gold-halogen lamp |
| CN110085508A (en) * | 2019-05-10 | 2019-08-02 | 傅志坤 | A kind of metal halide ceramic cavity and lamp |
| CN111105987A (en) * | 2019-12-28 | 2020-05-05 | 北京晶朗光电科技有限公司 | White light sodium lamp with high light efficiency and high color rendering property |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3659138A (en) * | 1970-11-06 | 1972-04-25 | Gen Electric | Alumina-metal sealed lamp apparatus |
| JPH10125230A (en) * | 1996-08-30 | 1998-05-15 | Ngk Insulators Ltd | Manufacture of tube for ceramic metal halide lamp |
| US6495960B1 (en) * | 2000-03-08 | 2002-12-17 | Japan Storage Battery Co., Ltd. | Discharge lamp |
| US6528945B2 (en) * | 2001-02-02 | 2003-03-04 | Matsushita Research And Development Laboratories Inc | Seal for ceramic metal halide discharge lamp |
| CN1316552C (en) * | 2003-06-13 | 2007-05-16 | 王凯 | Metal holide lamp arc tube |
-
2005
- 2005-11-10 CN CNB2005101102605A patent/CN100431088C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109243940A (en) * | 2018-09-28 | 2019-01-18 | 贵州宇光鸿宇电气照明科技有限公司 | A kind of electrode sealing location structure for ceramic gold-halogen lamp |
| CN110085508A (en) * | 2019-05-10 | 2019-08-02 | 傅志坤 | A kind of metal halide ceramic cavity and lamp |
| CN111105987A (en) * | 2019-12-28 | 2020-05-05 | 北京晶朗光电科技有限公司 | White light sodium lamp with high light efficiency and high color rendering property |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100431088C (en) | 2008-11-05 |
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Granted publication date: 20081105 Termination date: 20111110 |