CN1574185A - Short arc discharging lamp - Google Patents
Short arc discharging lamp Download PDFInfo
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- CN1574185A CN1574185A CN 200410049563 CN200410049563A CN1574185A CN 1574185 A CN1574185 A CN 1574185A CN 200410049563 CN200410049563 CN 200410049563 CN 200410049563 A CN200410049563 A CN 200410049563A CN 1574185 A CN1574185 A CN 1574185A
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- cylindrical shell
- maintenance
- short arc
- discharge lamp
- arc discharge
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Abstract
Provided is a short arc discharge lamp which is never broken because a glass tube of a holding tube body does not move, and force is not concentrated on a sealing part.This short arc discharge lamp is so structured that a negative electrode and a positive electrode are disposed oppositely to each other in an arc tube; an electrode core bar of the negative electrode and an electrode core bar of the positive electrode are inserted into and held by the holding tube body; the holding tube body is supported to a narrowed part of a side tube continued to the arc tube; and the periphery of the holding tube body is covered with a covering material formed of a metal. In the short arc discharge lamp, the holding tube body has a short diameter part in the tube axis direction; the covering material has a plurality of projection parts continuously extending in the tube axis direction of the holding tube body; and the circumferential cross-sectional shape of the holding tube body of the covering material has a wave-like shape and/or a saw-tooth shape.
Description
Technical field
The present invention relates to be used for projecting apparatus, semiconductor exposure, UV cured etc. the employed short arc discharge lamp of light source.
Background technology
For example, be used for the light source of projecting apparatus, often using in the past and enclose the short arc discharge lamp that xenon is arranged.Recently, the higher requirement of brightness of wishing the projecting apparatus transmission image becomes stronger.Therefore, the more trend of the gas flow that makes the xenon of being enclosed is arranged.Thereby, recent short arc discharge lamp, the air pressure when lighting a lamp in the luminous tube becomes high.
Such short arc discharge lamp, be in the spherical or oval spherical luminous tube that forms by quartz glass, enclose xenon in, dispose negative electrode is relative with anode.And the electrode plug of negative electrode and anode is sealed in along the end of the side pipe of luminous tube both sides continuity.And, in order to keep the electrode plug of negative electrode and anode, with the end heating of luminous tube one side of side pipe and draw, form the portion of drawing behind the undergauge.But, for directly keeping the electrode plug of negative electrode and anode, the portion of drawing by side pipe keeps, and must make the amount of drawing bigger.
Therefore, used in the past by electrode plug and inserted the cylindrical shell of making by quartz glass that is used for keeping the electrode plug, and the portion of drawing of side pipe was deposited over maintenance with on the cylindrical shell, thereby kept the technology of the electrode plug of negative electrode and anode negative electrode and anode.
If the portion of drawing of side pipe is deposited over maintenance with on the cylindrical shell,, may produce little wedge gap then in deposited end.Thereby become crack reason when lighting a lamp.As the portion of drawing of side pipe not being deposited over maintenance with the technology on the cylindrical shell, open in the clear 51-148274 communique the spy, disclose the technology of the thin layer of molybdenum that 10 μ m～30 μ m thickness are set, tantalum, tungsten, titanium and so on refractory metal paper tinsel on the outer peripheral face that keeps with cylindrical shell.
Fig. 1 be expression as prior art, use the schematic diagram of side pipe of anode one side of existing short arc discharge lamp of the technology of above-mentioned same communique.Wherein a part illustrates with sectional view.Electrode plug 23 is run through remains on the maintenance of being made by quartz glass that is used for keeping the electrode plug with cylindrical shell 30.Keep coating clad material 40 on the outer peripheral face with cylindrical shell 30.And disclose on side pipe 11, be provided with in recess 70 so that keep can not be in axially movable technology with cylindrical shell 30.14 is lamp holder.
But, open in the disclosed technology of clear 51-148274 communique the spy, exist maintenance and use cylindrical shell 30 vertically to the possibility of luminous tube 10 1 side shiftings, the anti-shake performance of lamp reduces, and causes the breakage of lamp easily.And, in order to prevent to keep being provided with tungsten coiling 60 to luminous tube 10 1 side shiftings, still, not only number of components increase can be produced, and the inconvenience of the tungsten coiling 60 that different size is set must be appended to the lamp of different size respectively with cylindrical shell 30.
The spy opens clear 51-148274 communique
Summary of the invention
Therefore, the object of the present invention is to provide maintenance that a kind of quartz glass that can prevent to be used to keep the electrode plug makes with the moving axially of cylindrical shell, anti-shake performance is good, and can prevent the short arc discharge lamp that lamp breaks.
In order to address the above problem, short arc discharge lamp of the present invention, wherein, negative electrode and anode relative configuration in luminous tube, the electrode plug of this negative electrode and the electrode plug of this anode are run through to remain on and are kept with in the cylindrical shell, this maintenance is supported with the portion of drawing of cylindrical shell by the side pipe that is connected to this luminous tube, be coated with the clad material that constitutes by metal on the outer peripheral face of this maintenance with cylindrical shell, it is characterized in that: the above-mentioned maintenance small diameter part of cylindrical shell on tube axial direction, above-mentioned clad material has to a plurality of projecting strip parts of this maintenance with the continuous extension of tube axial direction of cylindrical shell, and this clad material is wavy and/or zigzag in this maintenance with the cross sectional shape on the circumferencial direction of cylindrical shell.
Short arc discharge lamp of the present invention is characterized in that: when 1/2 of the maximum difference of the diameter beyond the small diameter part of above-mentioned maintenance usefulness cylindrical shell and this small diameter part between the part is a (mm), and 0.2≤a≤2.
Short arc discharge lamp of the present invention is characterized in that: paper tinsel or the thin plate of above-mentioned clad material for making by molybdenum, and carry out zigzag (ギ ザ ギ ザ) processing.
Short arc discharge lamp of the present invention is characterized in that: the bending height of above-mentioned zigzag processing is below the 2mm, and spacing is below the 2mm.
Effect
In the present invention, keep on tube axial direction, having small diameter part with cylindrical shell, make the side pipe inner pressure relief and keep from the location heating with the outer peripheral face of the side pipe of cylindrical shell, on keeping, side pipe is burnt especially with the pairing position of the small diameter part of cylindrical shell, thus, keep being secured in a press, thereby can prevent to keep in axial moving with cylindrical shell with the small diameter part of cylindrical shell, and, do not need to open maintenance that clear 51-148274 communique disclosed with the parts outside the cylindrical shell as the spy.But,, must keep with the clad material that is formed by refractory metal is set on the outer peripheral face of cylindrical shell in order to prevent to keep using the deposited of cylindrical shell and side pipe.Therefore, the maintenance that has small diameter part from the location with the outer peripheral face of the side pipe of cylindrical shell heat, during undergauge, if this clad material is smooth paper tinsel shape or thin sheet form, then on keeping, reel and the covering clad material with cylindrical shell, when the side pipe outer peripheral face burns, clad material is compressed on the side pipe inwall, and the part may produce the fold with crooked sharp corner on the surface of clad material.Because produce this fold, not only make the degraded appearance of lamp and diminish the outward appearance of lamp, reduced the commercial value of lamp, and can produce stress at the tip of the bend of fold and concentrate, probably can cause breaking of lamp.
Therefore, even keep with having small diameter part on the cylindrical shell, and keeping with the clad material that is formed by refractory metal is set on the outer peripheral face of cylindrical shell, because clad material has to a plurality of projecting strip parts of this maintenance with the continuous extension of tube axial direction of cylindrical shell, this clad material is wavy with the cross sectional shape on the circumferencial direction of cylindrical shell or the sawtooth dress in this maintenance, owing to be wavy and jagged mixing shape, from the side pipe outer peripheral face heat, after the undergauge, clad material is flexible, thereby can prevent the local buckling fold of clad material.
Description of drawings
Fig. 1 is the schematic diagram of side pipe of anode one side of the existing short arc discharge lamp of expression;
Fig. 2 is the schematic diagram of side pipe of anode one side of expression short arc discharge lamp of the present invention;
Fig. 3 is that expression is used for the embodiment of the maintenance of short arc discharge lamp of the present invention with cylindrical shell;
Fig. 4 is near the maintenance of short arc discharge lamp of the present invention shell portion enlarged drawing and a sectional view;
Fig. 5 is the enlarged drawing of the clad material made by refractory metal;
Fig. 6 is that the molybdenum foil after the processing of expression hackle mark is wound on the stereogram of maintenance with the state on the cylindrical shell.
Embodiment
Below, specify embodiments of the invention with reference to the accompanying drawings.Fig. 2 is the schematic diagram of side pipe of anode one side of expression short arc discharge lamp of the present invention.Wherein part illustrates with sectional view.An example of short arc discharge lamp of the present invention is the xenon short arc discharge lamp.In the luminous tube of making by quartz glass 10, relatively dispose the anode 22 and the negative electrode (not shown) of the front end that is fixed on the pair of electrodes plug 23 that forms by tungsten bar.In addition, in luminous tube 10, enclose xenon.Side pipe 11 extends from the both sides of luminous tube 10, electrode plug 23 at the end seal of side pipe 11.The 14th, the lamp holder of covering hermetic unit.
Formed by quartz glass, the length direction central part on its outer peripheral face has the maintenance of small diameter part with in the cylindrical shell 30, is penetrated with electrode plug 23 respectively, thereby electrode plug 23 is by keeping with cylindrical shell 30 maintenances.Keep on its length direction, having small diameter part 31,, burnt especially with small diameter part 31 corresponding positions on the side pipe 11, and keep being secured in a press with cylindrical shell 30 by heating from the side pipe outer peripheral face with cylindrical shell 30.Except that shape shown in Figure 2, keeping with cylindrical shell 30 also can be the shape shown in Fig. 3 (a) and (b), (c) for example, and still, its shape is not limited in this.Fig. 3 (b) represents that the both ends of its length direction have the maintenance cylindrical shell 30 of jut 32.Jut 32 is not limited to both ends, also can be positioned to keep with on the outer peripheral face of cylindrical shell.The outward appearance of Fig. 3 (c) roughly is drum type, particularly glass and is easy to shaping (being easy to make) thereby more suitable.The 33rd, running through the through hole of electrode plug.
As shown in Fig. 3 (a) and (b), (c), when 1/2 of the maximum difference of the diameter beyond the small diameter part 31 of maintenance usefulness cylindrical shell 30 and this small diameter part between the part is a (mm), at a is under the situation of 0.1mm, the depression of small diameter part 31 is too small, even can not make maintenance fully fixing with cylindrical shell 30 from the heating of side pipe 11 outer peripheral faces, undergauge.In addition, if surpass 2mm, then from side pipe 11 outer peripheral faces heat, during undergauge because excessive undergauge, warpage may take place in glass, therefore 0.2≤a≤2 preferably.
Fig. 4 (a) and (b), (c) have represented each maintenance shown in Fig. 3 (a) and (b), (c) is put into side pipe 11 with cylindrical shell 30, and from side pipe 11 external heat and the state that draws.And, be in decompression state in the luminous tube 10, heat by end, thereby side pipe 11 undergauges form the portion 12 of drawing luminous tube 10 1 sides of side pipe 11.Keeping with cylindrical shell 30 and drawing between the portion 12, as shown in Figure 2, be coated with the clad material of making by refractory metal 50.By this covering, keep with cylindrical shell 30 and draw portion 12 can be by deposited fixing not by integrated.
A-A ' the sectional view of Fig. 4 (d) presentation graphs 4 (c).The cross sectional shape that the figure shows clad material 50 is, across the whole circumference that keeps with cylindrical shell, undulate shape or zigzag fashion, or the mixing shape of wave-like and zigzag fashion.
Specifically, as shown in Figure 5, clad material 50 is suitable for using the paper tinsel or the thin plate of wavy molybdenum system.Make projecting strip part 50a, 50b and alternately form peak, paddy, peak, paddy thereby the paper tinsel of molybdenum system or thin plate are folding in a certain direction, promptly carry out so-called zigzag processing.
Enumerate an example of size, in Fig. 5, the height c at the peak of clad material 50 is 0.2mm, and the spacing b at the peak of clad material 50 is 1.0mm, and thickness t is 15 μ m.The bending height of zigzag processing is equivalent to the height c at the peak of clad material 50, if but its not at 2mm with the next flexible effect that is difficult to obtain paper tinsel.In addition, spacing is not difficult to obtain the flexible effect of paper tinsel equally when 2mm is following.
As clad material 50, can use aforesaid molybdenum foil.Molybdenum foil is owing to its ductility well is fit to.Except that molybdenum, also can use refractory metals such as tungsten, tantalum, zirconium, titanium.The thickness of clad material 50 is preferably below the 30 μ m.
The following describes using under the situation of molybdenum foil as clad material, keep cladding method with shell portion.At first, the molybdenum foil of the clad material 50 that processes as zigzag of reeling on keeping with the outer peripheral face of cylindrical shell 30 subsequently, bends molybdenum foil in the axial both ends of the surface side of maintenance with cylindrical shell 30 so that a plurality of projecting strip part extends continuously towards axial direction.As shown in Figure 6, be illustrated in the state that keeps with the clad material 50 of having reeled on the cylindrical shell 30 with stereogram.Fig. 6 is equivalent to keep having on its axial substantial middle position with cylindrical shell 30 example of small diameter part 31, represented to reel as the molybdenum foil of clad material 50 so that a plurality of projecting strip part towards axially extending continuously.
Subsequently, in side pipe 11, insert by front end and have maintenance that the electrode plug 23 of electrode runs through with cylindrical shell 30, and make in the luminous tube that is connected on the side pipe 11 and be decompression state, if along tube axial direction side pipe 11 is heated then can make side pipe 11 undergauges and form the portion 12 of drawing, because the middle clad material 50 that forms by molybdenum foil that exists, keep with cylindrical shell 30 and draw to pass through deposited fixing between the portion 12 and not by integrated.At this moment, clad material 50 produces distortion towards a plurality of projecting strip parts that axially continuously extend in the heating of side pipe 11, undergauge process, can suppress the generation of local bending fold.In addition, keeping with cylindrical shell 30 not only can be complete cylinder, also can be the above polygon cylindrical shell of pentagon.
The invention effect
As mentioned above, in the short arc discharge lamp of the present invention, the maintenance of being made by quartz glass has small diameter part with cylindrical shell, and at reel on the outer peripheral face of the cylindrical shell clad material of the refractory metal carried out zigzag processing of this maintenance, therefore, even keep side pipe with cylindrical shell to heat to the location from the outside and make side pipe generation undergauge, on the surface of clad material, can not produce buckle fold yet, stress can not take place on the contact site of paper tinsel and glass concentrate, thereby breakage can not occur yet.
According to the present invention, even at vibration lamps such as whens transportation, keep also can not moving with the glass tube of cylindrical shell, concentrating of power can not taken place on the sealing, can realize can not taking place the short arc discharge lamp of breakage.
Claims (4)
1. short arc discharge lamp, negative electrode and anode relative configuration in luminous tube, the electrode plug of this negative electrode and the electrode plug of this anode are run through to remain on and are kept with in the cylindrical shell, this maintenance is supported with the portion of drawing of cylindrical shell by the side pipe that is connected to this luminous tube, be coated with the clad material that forms by refractory metal on the outer peripheral face of this maintenance with cylindrical shell, it is characterized in that:
Described maintenance has small diameter part with cylindrical shell on tube axial direction, described clad material has to a plurality of projecting strip parts of this maintenance with the continuous extension of tube axial direction of cylindrical shell, and this clad material is wavy and/or zigzag in this maintenance with the cross sectional shape on the circumferencial direction of cylindrical shell.
2. short arc discharge lamp according to claim 1 is characterized in that: described maintenance with the small diameter part of cylindrical shell and except that this small diameter part 1/2 when being a (mm) of maximum difference of the diameter between partly, 0.2≤a≤2.
3. short arc discharge lamp according to claim 1 and 2 is characterized in that: paper tinsel or the thin plate of described clad material for making by molybdenum, and implement to process with zigzag.
4. short arc discharge lamp according to claim 3 is characterized in that: the kink height of described zigzag processing is below 2mm, and the bending spacing is below 2mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003174413A JP4442124B2 (en) | 2003-06-19 | 2003-06-19 | Short arc discharge lamp |
| JP2003174413 | 2003-06-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1574185A true CN1574185A (en) | 2005-02-02 |
| CN100449677C CN100449677C (en) | 2009-01-07 |
Family
ID=34097903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100495636A Expired - Fee Related CN100449677C (en) | 2003-06-19 | 2004-06-18 | Short arc discharging lamp |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4442124B2 (en) |
| CN (1) | CN100449677C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005046483A1 (en) * | 2005-09-28 | 2007-03-29 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Discharge lamps especially useful for productrion of Xenon or mercury high pressure discharge lamps has bulb stems, electrode holder rods and electrode support elements |
| JP5041349B2 (en) * | 2010-04-23 | 2012-10-03 | ウシオ電機株式会社 | Short arc type discharge lamp |
| JP5696878B2 (en) * | 2010-11-17 | 2015-04-08 | ウシオ電機株式会社 | Xenon short arc lamp |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7506655A (en) * | 1975-06-05 | 1976-12-07 | Philips Nv | SHORT-ARC DISCHARGE LAMP. |
| JPH1083795A (en) * | 1996-09-06 | 1998-03-31 | Toshiba Lighting & Technol Corp | High pressure discharge lamp, lamp lighting device, and lighting system |
| JPH10134768A (en) * | 1996-10-25 | 1998-05-22 | Toto Ltd | Discharge lamp |
| DE10048410A1 (en) * | 2000-09-29 | 2002-04-11 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Dielectric barrier discharge lamp |
-
2003
- 2003-06-19 JP JP2003174413A patent/JP4442124B2/en not_active Expired - Fee Related
-
2004
- 2004-06-18 CN CNB2004100495636A patent/CN100449677C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP4442124B2 (en) | 2010-03-31 |
| CN100449677C (en) | 2009-01-07 |
| JP2005011671A (en) | 2005-01-13 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20090107 Termination date: 20160618 |