CN2891274Y - Arc tube of ceramic metal halide lamp - Google Patents
Arc tube of ceramic metal halide lamp Download PDFInfo
- Publication number
- CN2891274Y CN2891274Y CN 200520046428 CN200520046428U CN2891274Y CN 2891274 Y CN2891274 Y CN 2891274Y CN 200520046428 CN200520046428 CN 200520046428 CN 200520046428 U CN200520046428 U CN 200520046428U CN 2891274 Y CN2891274 Y CN 2891274Y
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- ceramic
- metal halide
- halide lamp
- arc tube
- electric arc
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Abstract
The utility model belongs to the technical field of electric light sources, in particular to an electric arc tube structure of ceramic metal halide lamp, whose discharge cavity is sintering made of caving the straight tube model polycrystalline alumina ceramic tube and the ceramic seals on the two ends, wherein the ceramic seal extends into the top inside part of the discharge cavity and is of pyramidal or conical shape, thereby having the action of improving light effect and color index; the end part of the ceramic seal is connected with a fistula which has an eyelet in the middle through a conical transition drum, and a pair of electrodes which extends into the fistula is hermetic sealed to the ceramic cavity through a glass solder way; the discharge cavity is filled with starting gas, mercury and several kinds of metal halide of different spectrum request. The photoelectric electrical property of the ceramal metal halide lamp is obviously better than that of vitreous metal halide lamp; thereby the utility model is especially suitable for the production of middle and high power ceramic metal halide lamp.
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 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 purpose of this utility model 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 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.
In the utility model, 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 in the utility model 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 utility model is 20 watts to 2000 watts.
Description of drawings
Fig. 1 is the structural representation of ceramic metal halide lamp arc tube in the utility model.
Fig. 2 is the structural representation of ceramic cavity in the utility model.
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 (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 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.
2, ceramic metal halide electric arc tube according to claim 1, it is characterized in that the ceramic discharge chamber is made up of straight pipe type alumina ceramic tube (1), aluminium oxide ceramics plug (2) and (3) of enclosing the symmetry at these straight pipe type alumina ceramic tube (1) two ends, 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.
3, ceramic metal halide electric arc tube according to claim 1 is characterized in that the rear end part of ceramic plug is partly formed an integral body by circular-arc transitional cylinder and tubule.
4, ceramic metal halide electric arc tube according to claim 3 is characterized in that the tubule pottery of electrode by glass solder and ceramic plug partly realize 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 200520046428 CN2891274Y (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 |
|---|---|---|---|
| CN 200520046428 CN2891274Y (en) | 2005-11-10 | 2005-11-10 | Arc tube of ceramic metal halide lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2891274Y true CN2891274Y (en) | 2007-04-18 |
Family
ID=38021939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520046428 Expired - Fee Related CN2891274Y (en) | 2005-11-10 | 2005-11-10 | Arc tube of ceramic metal halide lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2891274Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100423173C (en) * | 2005-11-10 | 2008-10-01 | 复旦大学 | Arc tube of ceramic metal halide lamp |
-
2005
- 2005-11-10 CN CN 200520046428 patent/CN2891274Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100423173C (en) * | 2005-11-10 | 2008-10-01 | 复旦大学 | Arc tube of ceramic metal halide lamp |
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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: 20070418 Termination date: 20091210 |