CN100423173C - Arc tube of ceramic metal halide lamp - Google Patents
Arc tube of ceramic metal halide lamp Download PDFInfo
- Publication number
- CN100423173C CN100423173C CNB2005101102573A CN200510110257A CN100423173C CN 100423173 C CN100423173 C CN 100423173C CN B2005101102573 A CNB2005101102573 A CN B2005101102573A CN 200510110257 A CN200510110257 A CN 200510110257A CN 100423173 C CN100423173 C CN 100423173C
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- ceramic
- metal halide
- halide lamp
- tube
- plug
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Abstract
The present invention belongs to the technical field an electric light source, particularly relates to an electric arc tubular structure of a ceramic metal halide lamp. A discharge cavity of the present invention is integrally formed by sintering a straight tube type polycrystal alumina ceramic tube and ceramic plugs at both ends. The part of the ceramic plug, which is extended into the inner side at top part of the discharge cavity, is in the shape of taper or cone to play a role of raising light effect and color rendering index. The back end part of the ceramic plug is connected with a slim tube with a small hole in the center through a conical transition tube; a pair of electrodes extended into the slim tube realize hermetic sealing with a ceramic cavity through a mode of glass solder. Start-up gas, mercury, and a plurality of metal halides required by different spectra are filled in an electric discharge cavity. The photoelectric properties of the metal halide lamp disclosed in the present invention are obviously superior to a quartz metal halide lamp; the present invention is particularly suitable for the ceramic metal halide lamp of middle and large power to produce.
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 process 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 objective of the invention 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 chamber 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 body with glass solder.
Among the present invention, the ceramic discharge chamber is by straight pipe type alumina ceramic tube 1, enclosing the aluminium oxide ceramics plug 2 and 3 of the symmetry at earthenware 1 two ends forms, the head portion 4 that ceramic plug stretches in the earthenware is inboard tapered or conical, its end is made up of elongated tail pipe 5 and arc transition tube 6, and the centre has for putting into the centre bore 7 that electrode is used.A ceramic plug compression moulding of mould.Ceramic plug and the method that earthenware adopts interference fit to be connected after biscuiting is cut respectively under the different temperature, embed earthenware 1 respectively with ceramic plug 2 and 3, at high temperature sinter the earthenware cavity of an integral body again into.
Further, head portion 4 inboards that ceramic plug stretches into the alumina tube pottery among the present invention are tapered or the pyramid type of certain radian are arranged, and can play the effect that improves cold junction temperature, thereby can improve light lie and color developing effect.The physical dimension of ceramic plug can guarantee that the reasonable temperature in reliable sealing-in district distributes, and guarantees hermetic seal and the least possible thermal radiation energy loss.
Further, the input power range of ceramic metal helide lamp of the present invention is 20 watts to 2000 watts.
Description of drawings
Fig. 1 is the structural representation of ceramic metal halide lamp arc tube among the present invention.
Fig. 2 is the structural representation of ceramic cavity among the present invention.
Number in the figure: 1 is the semi-transparent polycrystal aluminium oxide earthenware, and 2 and 3 are respectively the ceramic plug of symmetrical configuration, and 4 is the head portion of earthenware, 5 is the elongated tail pipe of head portion end, 6 is the arc transition tube, and 7 is the ceramic plug centre bore, and 8 is the rare earth oxide 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 top are tapered, and tapering is 50 ° ± 2 °; The internal diameter of ceramic plug centre bore 7 is 2 ± 0.1mm, and total length is 16 ± 0.5mm, and the length that wherein stretches into earthenware 1 is 8 ± 0.2mm, and the external diameter of tail pipe 5 is 4 ± 0.1mm.Finish hermetic seal with the rare earth oxide glass solder 8 and molybdenum rod (silk) part of electrode assemblie, in fill the halide 15 ± 0.5g of metals such as Dy, Ho, Tm, Tl and Cs, mercury 23 ± 0.5g, and Kr
85With the gaseous mixture 5KPa of Ar, the total length of electric arc tube is 62 ± 1mm, arc length 30 ± 0.5mm.Colour temperature 5500 ± the 200K of this lamp, color rendering index 92 ± 2, light efficiency 110 ± 5Lm/W.
Claims (2)
1. 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 chamber 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 body with glass solder; Wherein, described ceramic discharge chamber is by straight pipe type alumina ceramic tube (1), enclose the aluminium oxide ceramics plug (2 of the symmetry at earthenware (1) two ends, 3) form, the head portion (4) that ceramic plug stretches in the earthenware is inboard tapered or conical, its end is made up of elongated tail pipe (5) and arc transition tube (6), and the centre has for putting into the centre bore (7) that electrode is used; Wherein:
The rear end part of described ceramic plug is formed an integral body by arc transition tube and elongated tail pipe;
Described electrode is realized hermetic seal by the elongated tail pipe of glass solder and ceramic plug.
2. 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 |
|---|---|---|---|
| CNB2005101102573A CN100423173C (en) | 2005-11-10 | 2005-11-10 | Arc tube of ceramic metal halide lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101102573A CN100423173C (en) | 2005-11-10 | 2005-11-10 | Arc tube of ceramic metal halide lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1761027A CN1761027A (en) | 2006-04-19 |
| CN100423173C true CN100423173C (en) | 2008-10-01 |
Family
ID=36707043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101102573A Expired - Fee Related CN100423173C (en) | 2005-11-10 | 2005-11-10 | Arc tube of ceramic metal halide lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100423173C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101826441B (en) * | 2009-12-02 | 2012-05-02 | 宁波亚茂照明电器有限公司 | Ceramic metal halide lamp arc tube and integral manufacture process thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5145919B2 (en) * | 2007-12-19 | 2013-02-20 | ウシオ電機株式会社 | High pressure discharge lamp |
| CN101882558A (en) * | 2010-06-07 | 2010-11-10 | 高鞫 | Ceramic projection lamp |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10125230A (en) * | 1996-08-30 | 1998-05-15 | Ngk Insulators Ltd | Manufacture of tube for ceramic metal halide lamp |
| US20020190653A1 (en) * | 2000-03-08 | 2002-12-19 | Yasaburo Takeji | Discharge lamp |
| CN1461038A (en) * | 2003-06-13 | 2003-12-10 | 王凯 | Metal holide lamp arc tube |
| CN2891274Y (en) * | 2005-11-10 | 2007-04-18 | 复旦大学 | Arc tube of ceramic metal halide lamp |
-
2005
- 2005-11-10 CN CNB2005101102573A patent/CN100423173C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10125230A (en) * | 1996-08-30 | 1998-05-15 | Ngk Insulators Ltd | Manufacture of tube for ceramic metal halide lamp |
| US20020190653A1 (en) * | 2000-03-08 | 2002-12-19 | Yasaburo Takeji | Discharge lamp |
| CN1461038A (en) * | 2003-06-13 | 2003-12-10 | 王凯 | Metal holide lamp arc tube |
| CN2891274Y (en) * | 2005-11-10 | 2007-04-18 | 复旦大学 | Arc tube of ceramic metal halide lamp |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101826441B (en) * | 2009-12-02 | 2012-05-02 | 宁波亚茂照明电器有限公司 | Ceramic metal halide lamp arc tube and integral manufacture process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1761027A (en) | 2006-04-19 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Haining Xinguangyang Opto Electronics Co., Ltd. Assignor: Fudan University Contract fulfillment period: 2009.4.20 to 2014.4.20 contract change Contract record no.: 2009330001212 Denomination of invention: Ceramic metal halide lamp arc tube with higher luminous efficiency Granted publication date: 20081001 License type: Exclusive license Record date: 2009.5.26 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.4.20 TO 2014.4.20; CHANGE OF CONTRACT Name of requester: HAINING XINGUANYANG PHOTOELECTRICITY CO., LTD. Effective date: 20090526 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081001 Termination date: 20111110 |