CN201126807Y - Ceramic metallic halogen lamp electrode - Google Patents
Ceramic metallic halogen lamp electrode Download PDFInfo
- Publication number
- CN201126807Y CN201126807Y CNU2007200748554U CN200720074855U CN201126807Y CN 201126807 Y CN201126807 Y CN 201126807Y CN U2007200748554 U CNU2007200748554 U CN U2007200748554U CN 200720074855 U CN200720074855 U CN 200720074855U CN 201126807 Y CN201126807 Y CN 201126807Y
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- CN
- China
- Prior art keywords
- tungsten
- electrode
- halogen lamp
- niobium
- molybdenum filament
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- Expired - Fee Related
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- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
The utility model belongs to the electric light source technology field, specifically a ceramic metal halide electrode. The electrode is composed of a niobic blind pipe, a tungsten rod winded with a spiral thread and a molybdenum filament that spires. A tungsten spiral is winded at a position adjacent to a head of the tungsten rod as an electrode head. The molybdenum filament is winded in a middle of the tungsten rod. A space between an external diameter of the molybdenum filament and an inner diameter of a rear pipe on both end of a discharging pipe ranges from 0.02 mm to 0.08 mm. The niobic blind pipe is inserted into another end of the tungsten rod. The inserting depth, according to the power, is ranged from 0.5 mm to 2.5 mm; then clamping a superposed part by a six-bladed clamp, finally reinforcing in a manner of laser spot welding. The electrode in the ceramic electric arc tube is positioned by a three-point stretching method.
Description
Technical field
The utility model belongs to the electric light source technology field, is specifically related to a kind of ceramic metal halogen lamp pole, is applicable to the manufacturing of the various power ceramic gold-halogen lamps of 20W-1000W.
Background technology
At present mainly in the manufacturing of ceramic metal halogen lamp pole adopt three kinds of materials, be respectively tungsten (or thorium tungsten, tungsten alloy), molybdenum (or molybdenum alloy) and niobium.Wherein tungsten system electrode has anti-halide corrosion and the stable characteristics of thermionic emission under the high temperature as the top or the terminal of electrical discharge arc; The niobium bar has the coefficient of expansion close with ceramic arc tube, plays hermetic seal; And the fusing point of molybdenum plays interconnect function between last two kinds of metals.
Ceramic metal halogen lamp pole has two kinds of structures at present.First kind of structure is coaxial in order connection of tungsten bar, molybdenum rod and niobium bar that will be wound with spiral coil, between adopt laser welding method.Second kind of structure is that the tungsten bar that will be wound with spiral coil directly inserts hollow niobium pipe, between adopt mechanical force to compress mode to connect.The cost of first method is higher, and the technical difficulty of coaxial connection is also bigger; The bonding strength of second method and vacuum leakproofness be difficult to guarantee, causes electrode to turn around easily or phenomenon that luminescent substance leaks.
Summary of the invention
The purpose of this utility model is to provide that a kind of vacuum leakproofness is good, the simple ceramic metal halogen lamp pole of technology.
The ceramic metal halogen lamp pole that the utility model provides, structure are made up of tungsten bar 2 and niobium blind pipe 4 as depicted in figs. 1 and 2, and the head of its tungsten bar 2 is wound with tungsten filament helix circle or thoriatde-tungsten wire spiral coil 1, and the tungsten bar stretches out the length of spiral coil between 0.2-2.5mm; The other end of tungsten bar 2 is connected with niobium blind pipe 4, and the mid portion of tungsten bar 2 is wound with molybdenum filament spiral coil 3.
In the utility model, the length that described niobium blind pipe 4 is stretched in the end of described tungsten bar 2 is 0.5-2.5mm.
In the utility model, the molybdenum filament spiral coil external diameter and the spacing between the tail pipe internal diameter that are wound in described tungsten bar middle part are 0.02-0.08mm.
The utility model also provides a kind of preparation method who prepares ceramic metal halogen lamp pole.Under the situation of determining electrode front electrode module diameter, the niobium blind pipe 4 that special processing matches with it; The sealing of this niobium blind pipe 4 middle parts when assembling, is at first inserted niobium blind pipes 4 with tungsten bar 2, with six pawl clamps both intersection tightly, adopts the mode of laser spot welding to reinforce then; The tungsten bar also twines tungsten filament helix or thoriatde-tungsten wire spiral 1 near an end of discharge cavity, is used for the emission of electronics; The end that electrode assemblie is connected with the niobium blind pipe twines molybdenum filament spiral 3, prevents the corrosion of the interior filler of electric arc tube to niobium blind pipe and scolder.Thereby obtain the integral body of ceramic metal halogen lamp pole.
The location of electrode in tail pipe adopts the method for 3 stretchings to position.Design according to electric arc tube, behind definite electrode tip position, also promptly determined the length that electrode rear portion niobium pipe stretches out tail pipe, should adopt this moment the method for 3 stretchings to process with 3 scrapers at outstanding niobium tube portion, make 3 salient points that become 120 ℃ of angles each other of surface appearance that go out part near the niobium rostrum of tail pipe, its external diameter is greater than the internal diameter of tail pipe, thereby finished the location of electrode on tail pipe.
After the assembling of finishing electrode and electric arc tube, the special acid scolder of tail pipe end has been realized the sealing between electrode assemblie and tail pipe.
According to the internal diameter size of the ceramic gold-halogen lamp discharge cavity two ends tail pipe of different capacity, the diameter of molybdenum filament spiral 3 also needs to change thereupon, and the interval of the external diameter of molybdenum filament spiral and the internal diameter of tail pipe should be between 0.02-0.08mm.
The characteristics of these two body ceramic metal halogen lamp poles are that technology is simple, cost is lower, and the intensity that connects between each parts of electrode and vacuum leakproofness have also obtained tangible improvement.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the front view of the utility model ceramic metal halogen lamp pole.
Fig. 2 is the axial cutaway view of the utility model ceramic metal halogen lamp pole.
Fig. 3 is the sectional structural map after the utility model electrode is put into ceramic metal halide lamp shell.
Number in the figure: 1 is the tungsten filament helix circle or the tungsten filament bung flange of electrode head, and 2 is the tungsten bar, and 3 is the molybdenum filament spiral coil, and 4 is the niobium blind pipe, and 5 is ceramic arc tube, and 6 is ceramic arc tube two ends tail pipes, and 7 is scolder.
Embodiment
Carry out different designs according to the different capacity ceramic metal halogen lamp pole, length, the outer dia of molybdenum filament spiral 3 and the length of tungsten bar 2 and niobium system blind pipe 4 of determining sparking electrode by the length and the internal diameter of earthenware 5 two ends tail pipes 6.Wherein the spacing of the internal diameter of the outer dia of molybdenum filament spiral 3 and tail pipe is 0.05mm, tungsten filament helix electrode tip 1 should stretch out near discharge cavity one side tail pipe 6 ports, niobium blind pipe 4 length of outstanding tail pipe are 7mm, and the degree of depth of inserting tungsten bar 2 one side niobium blind pipes 4 is 1.5-1.8mm.Table 1 has provided the size of each several part in 1000W ceramic gold-halogen lamp tail pipe and the electrode.
| The tungsten pole length | 17mm |
| The tungsten shank diameter | 0.79mm |
| Molybdenum filament spiral external diameter | 3.2mm |
| The molybdenum filament helix length | 10mm |
The size of each several part in 1000W ceramic gold-halogen lamp tail pipe and the electrode
Claims (3)
1, a kind of ceramic metal halogen lamp pole is characterized in that being made up of tungsten bar (2) and niobium blind pipe (4), and the head of its tungsten bar (2) is wound with tungsten filament helix circle or thoriatde-tungsten wire spiral coil (1), and the tungsten bar stretches out the length of spiral coil between 0.2-2.5mm; The other end of tungsten bar (2) is connected with niobium blind pipe (4), and the mid portion of tungsten bar (2) is wound with molybdenum filament spiral coil (3).
2, ceramic metal halogen lamp pole according to claim 1, the length that described niobium blind pipe (4) is stretched in the end that it is characterized in that described tungsten bar (2) is 0.5-2.5mm.
3, ceramic metal halogen lamp pole according to claim 1, the molybdenum filament spiral coil external diameter and the spacing between the tail pipe internal diameter that it is characterized in that being wound in described tungsten bar middle part are 0.02-0.08mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200748554U CN201126807Y (en) | 2007-09-20 | 2007-09-20 | Ceramic metallic halogen lamp electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200748554U CN201126807Y (en) | 2007-09-20 | 2007-09-20 | Ceramic metallic halogen lamp electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201126807Y true CN201126807Y (en) | 2008-10-01 |
Family
ID=40000274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200748554U Expired - Fee Related CN201126807Y (en) | 2007-09-20 | 2007-09-20 | Ceramic metallic halogen lamp electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201126807Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785925A (en) * | 2014-01-22 | 2015-07-22 | 上海亚尔光源有限公司 | Electrode molybdenum sheet assembly for ultrahigh-voltage point light source and forming method thereof |
-
2007
- 2007-09-20 CN CNU2007200748554U patent/CN201126807Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785925A (en) * | 2014-01-22 | 2015-07-22 | 上海亚尔光源有限公司 | Electrode molybdenum sheet assembly for ultrahigh-voltage point light source and forming method thereof |
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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: 20081001 Termination date: 20110920 |