CN1791963A - High-pressure discharge lamp - Google Patents
High-pressure discharge lamp Download PDFInfo
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- CN1791963A CN1791963A CN 200480013817 CN200480013817A CN1791963A CN 1791963 A CN1791963 A CN 1791963A CN 200480013817 CN200480013817 CN 200480013817 CN 200480013817 A CN200480013817 A CN 200480013817A CN 1791963 A CN1791963 A CN 1791963A
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- pressure discharge
- shell
- lamp holder
- discharge lamp
- lamp
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Abstract
A high-pressure discharge lamp has an outer envelope (1) in which a discharge vessel (11) is arranged. The discharge vessel encloses a discharge space (13) with an ionizable filling. The discharge vessel has two mutually opposed neck-shaped portions (2, 3) through which current-supply conductors (4, 5) extend to a pair of electrodes (6, 7) in the discharge space. A lamp base (8) of electrically insulating material supports the discharge vessel (11) via the first and second current-supply conductors. The lamp base is provided with a first (14) and a second (15) contact members connected to the respective first and the second current-supply conductor, respectively. The lamp base (8) and/or the first and/or the second contact member (14, 15) function as an end-of-life device. Preferably, the lamp base is made from soft glass and the first and the second contact member are made from an oxidized nickel-iron-chromium material, preferably from a NiFeCr alloy such as vacovit.
Description
The present invention relates to a kind of high-pressure discharge lamp.
The high-pressure discharge lamp of power in 35 to 150W scopes is dominant in the lighting retail.The trend that has occurred is for creating positive conditions to lower lumen packing and/or the expansion of lower wattage.For example in brand shop, use lower intensity level, make light be gathered on each commodity rather than be full of whole zone.End user in the market is more and more interested in uniformity of light, thereby prefers using high-pressure discharge lamp to replace Halogen lamp LED and be used for low lumen packing and accent lighting.
Usually, the high-pressure discharge lamp of type described in the beginning paragraph has the discharge vessel of band ceramic wall or has quartz glass discharge vessel.The extensive use in practice of this high-pressure discharge lamp, and high luminous efficacy combined with favourable color and luster.The discharge vessel of lamp comprises a kind of or some kinds of halide and the rare gas fillers except that Hg.
In this description and claim, the ceramic wall of discharge vessel should be understood to the wall of being made by one of following material: monocrystal metal oxide (for example sapphire), translucent dense sintering polycrystalline metal oxide (Al for example
2O
3, YAG), translucent dense sintering polycrystalline metal nitride (for example AlN).
The lamp of type sees in the english abstract of JP-A 04002035 described in the beginning paragraph.Known discharge lamp comprises discharge vessel and power supply conductor, and wherein power supply conductor is supporting discharge vessel and is being mounted to from the lamp holder of being made by insulating material and stretching out.Shell or outer bulb are fixed on the lamp holder and are encapsulating discharge vessel and power supply conductor, and the one end opens wide.
The shortcoming of known discharge lamp is when end-of-life (EOL), and the increase of the stuffing pressure of lamp is just allowed and glow discharge occurred.This glow discharge can last very long (for example hundreds of hour).Thereby this glow discharge may cause extending the bonding conductor generation splash that forms mirror around lamp holder along discharge vessel, this just may trigger so-called incandescent mode, high-pressure discharge lamp may be sharply overheated under this pattern, surpasses the shell of discharge lamp and the safe material limit temperature of wiring usually.
An object of the present invention is to eliminate wholly or in part above shortcoming.According to the present invention, for this purpose, comprise at the such high-pressure discharge lamp described in the beginning paragraph:
Shell, wherein discharge vessel is around the longitudinal axis setting,
Discharge vessel is encapsulating the discharge space that has ionizable fill with air tight manner,
Discharge vessel has first, second neck opposite one another, and first, second power supply conductor passes described neck respectively and extends to the pair of electrodes place that is arranged in the discharge space,
The lamp holder of being made by electrical insulating material is supporting discharge vessel by first, second power supply conductor,
Lamp holder has first, second contact member that is connected on corresponding first, second power supply conductor,
The lamp holder and/or first and/or second contact member are as the end-of-life device.
According to lamp holder of the present invention, first and/or second contact member is used as fuse in the end-of-life process of high-pressure discharge lamp.Arc discharge between first, second contact member brings out stress in lamp holder.Lamp holder begins to melt or crack under by the stress that arc discharge brought out.The damage of lamp holder just stops and above-mentioned incandescent mode occurs.
Be characterised in that according to a preferred embodiment of high-pressure discharge lamp of the present invention lamp holder made by soft glass, Bohemian glass or ceramic material.Preferably, lamp holder is made by soft glass.The advantageous property of soft glass is that it has low softening point and relatively more responsive to thermal shock.When incandescent mode occurring, the lamp holder of being made by soft glass will be out of shape before reaching the extreme temperature and crack.
Preferably, the lamp holder color is that slightly white is so that with the extra light of useful beam angle reflection, and this has just increased the luminous efficacy of lamp effectively.Preferably, lamp holder is the form of plate.
Be characterised in that according to a preferred embodiment of high-pressure discharge lamp of the present invention first, second contact member made by (in advance) oxidation Ni-Fe-chromium material.This material provides good heat coupling for the lamp holder of being made by soft glass.Preferably, first, second contact member is made by resisto such as vacovit.
A preferred embodiment according to high-pressure discharge lamp of the present invention is characterised in that lamp holder is supporting shell, and shell is encapsulating first, second power supply conductor and is being connected on the lamp holder with air tight manner.Atmospheric pressure in shell or the outer bulb controlled just can prevent satisfactorily that power supply conductor is oxidized.Just mean and to find time shell or airtight environment is provided especially do not have oxidant such as oxygen in this airtight environment by the atmospheric pressure of control in the shell.Alternatively, the atmospheric pressure in the shell is controlled the atmospheric device that is provided for controlling in the shell that do not foreclose in the shell.In one embodiment of the invention, comprise for example nitrogen of small percentage of oxygen in the shell abrim.The oxidation of power supply conductor controlled just make power supply conductor can compare near discharge vessel location.Under the normal condition, provide (quartz) tubulature of press seal and/or tap, thereby cause high-pressure discharge lamp bulky and length is long so that reduce the oxidation of power supply conductor.For quartz discharge capacitor, preferably, press seal and power supply conductor are sized to by operation in air to reach the required life-span.The niobium of ceramic discharge vessel that is used for having the niobium power supply conductor is very fast in the working temperature place oxidation of discharge vessel, causes the useful life of high-pressure discharge lamp very limited.
Preferably, first, second contact member sends from shell.First contact member in the lamp holder is connected on first power supply conductor.Second contact member in the lamp holder is connected on second power supply conductor by the bonding conductor that extends along discharge vessel.First, second contact member provide mechanical support for discharge vessel connects and the electrode of discharge vessel is provided and the outside of high-pressure discharge lamp between electrically contact.
Atmospheric pressure in the shell controlled just make manufacturing structure simplify and compact high-pressure discharge lamp becomes possibility.Especially, can significantly reduce the length of high-pressure discharge lamp.For this reason, high-pressure discharge lamp preferred embodiment is characterised in that distance between electrodes d
eWith the high-pressure discharge lamp height h of axis longitudinally
DlRatio be in the following scope:
0.02≤d
e/h
dl≤0.2。
According to this embodiment of the invention, the high-pressure discharge lamp height h of axis along the longitudinal
DlCan be less than about 50mm, so that make distance between electrodes d
eBe in about 1mm in the scope to the 10mm.
A preferred embodiment according to high-pressure discharge lamp of the present invention is characterised in that, the blast pipe of the shell that is used for finding time is provided in lamp holder or is provided in the shell.After the advantage of doing like this is to be installed on discharge vessel and shell on the lamp holder of high-pressure discharge lamp, by the blast pipe shell of can finding time.In a further advantageous embodiment, blast pipe has also formed the feed-through element of the power supply conductor of the discharge vessel that leads to lamp.Do the advantage that also has the structure of simplifying lamp like this.
Lamp holder can be made with high dimensional accuracy.It is just very favourable when lamp holder is the plane in its surface that deviates from discharge vessel.This surface can be installed on (lamp) support such as the carriage, so it is the suitable surface as the discharge vessel reference by location.
A preferred embodiment according to high-pressure discharge lamp of the present invention is characterised in that shell is fixed on the lamp holder by enamel paint.Preferably, enamel paint provides with the form of moulding ring in advance.Use moulding ring in advance just to simplify the manufacture process of high-pressure discharge lamp greatly.
Advantage according to high-pressure discharge lamp of the present invention is that when lamp was in running order, the effective dimensions of discharge vessel was optically very compact, and this just makes lamp extremely be applicable in the compact lighting apparatus.Because the lamp holder according to high-pressure discharge lamp of the present invention has particular configuration, so discharge lamp is suitable in the reflector very much.Because discharge vessel has good resizing with respect to base plate with high accuracy location and base plate, so just allow that it is used for having the assembly that different cards is joined connection.
To come now that the present invention will be described in more detail referring to a plurality of embodiment and accompanying drawing, among the figure:
Figure 1A is shown schematically in according to high-pressure discharge lamp of the present invention;
Figure 1B is the profile of the high-pressure discharge lamp shown in Figure 1A;
Fig. 2 shows an alternate embodiment according to high-pressure discharge lamp of the present invention;
Fig. 3 shows another alternate embodiment according to high-pressure discharge lamp of the present invention; And
Fig. 4 shows another alternate embodiment according to high-pressure discharge lamp of the present invention.
These figure are schematically purely and are not to draw in proportion.Especially, for the sake of clarity, some sizes have been carried out obvious amplification.Equivalent unit among each figure is indicated by identical reference number as much as possible.
Figure 1A shows the perspective view according to high-pressure discharge lamp of the present invention.Be shown schematically in the section of the high-pressure discharge lamp shown in Figure 1A among Figure 1B.High-pressure discharge lamp comprises the discharge vessel 11 that is provided with around longitudinal axis 22.Discharge vessel 11 is encapsulating discharge space 13 with air tight manner, and discharge space 13 has the ionizable fill that comprises mercury, metal halide and rare gas.In the example of Figure 1A and 1B, discharge vessel 11 has first neck 2 and second, opposed neck 3, first power supply conductor 4 and second power supply conductor 5 extend to pair of electrodes 6,7 places respectively by described neck, and electrode 6,7 is arranged in the discharge space 13.High-pressure discharge lamp also has the lamp holder of being made by insulating material 8.Lamp holder 8 is supporting discharge vessel 11 by first, second power supply conductor 4,5.Lamp holder 8 is also supporting outer bulb or shell 1.In the example of Figure 1A and 1B, lamp holder 8 has first contact member 14 that is connected on first power supply conductor 4.In addition, lamp holder 8 has second contact member, 15, the second contact members and is connected on second power supply conductor 5 by the bonding conductor 16 that extends along discharge vessel 11.
According to the present invention, the lamp holder 8 and first and/or second contact member 14,15 are as the end-of-life device.The lamp holder 8 and first and/or second contact member 14,15 are used as fuse in the end-of-life process of high-pressure discharge lamp.Arc discharge between first, second contact member 14,15 brings out stress in lamp holder 8.Lamp holder 8 begins to melt or crack under by the stress that arc discharge brought out.The damage of lamp holder 8 just stops and above-mentioned incandescent mode occurs.
In alternate embodiment, at least one contact member is formed by the feed-through tube that is arranged in lamp holder, allows that one of power supply conductor is anchored in the described feed-through tube.Alternatively, in lamp holder, can provide two feed-through tube.Fastening means in these feed-through tube can be finished by resistance welded, laser welding or crimping.Use feed-through tube to replace the advantage of contact member to be, can realize discharge vessel about the longitudinal axis of high-pressure discharge lamp with bigger degree of freedom location.So just can further improve the accurate location of discharge vessel in the shell of high-pressure discharge lamp.
Preferably, lamp holder 8 also provides as sintered body, preferably as sintered ceramic body.Preferably, lamp holder is the form of plate.Lamp holder 8 can be made according to high dimensional accuracy.Other advantage of lamp holder 8 be its can according to light color make as white or light gray.Owing to use the material of light color, thus the light that discharge vessel 11 is sent will be reflected with the useful beam angle, thereby increase the efficient of lighting apparatus or the gross efficiency of high-pressure discharge lamp effectively.Thereby just prevented to be incident on light loss on the lamp holder 8 in formed light beam by reflector.In addition, when lamp holder 8 has the flat surfaces that deviates from discharge vessel 11, just very favourable.This surface can be installed on (lamp) support such as carriage, the reflector, so it is the suitable surface as discharge vessel 11 position references.In another advantageous embodiment, have central elevation towards the surface of the lamp holder 8 of discharge vessel, it is used for making during the manufacturing of high-pressure discharge lamp discharge vessel 11 and enamel paint ring placed in the middle with respect to lamp holder 8.
Preferably, shell 1 is connected on the lamp holder 8 with air tight manner.Atmospheric pressure in the shell 1 controlled just can prevent satisfactorily that power supply conductor 4,5 is oxidized.Owing to prevented that power supply conductor 4,5 is oxidized, just made power supply conductor 4,5 can compare near discharge vessel 11 location.The atmospheric pressure of control in the shell controlled, and press seal and/or tap (quartz) tubulature just is not provided to provide, thereby simplifies the structure of high-pressure discharge lamp and make its compact conformation.Preferably, the blast pipe 18 of the shell 1 that is used for finding time is provided in lamp holder 8, in this manner, on the lamp holder 8 that discharge vessel 11 and shell 1 is installed on high-pressure discharge lamp after, by blast pipe 18 shell 1 of can finding time.After finding time, and if desired after shell 1 inside has been provided required atmospheric pressure, just blast pipe 18 is sealed.Preferably, use getter in the enclosure, for example be used for the mixture of the water/hydrogen/oxygen of absorption impurity.If it is the blast pipe 18 in the lamp holder 8 is made by metal or NiFeCr alloy, just very favourable.
Preferably, shell 1 is made by quartz glass, Bohemian glass or soft glass.Preferably, shell 1 is fixed on the lamp holder 8 by the enamel paint of (glass) frit.When enamel paint just very favourable so that the form of moulding ring provides in advance.Use this ring of moulding in advance just to improve the positioning accuracy of discharge vessel 11 during the manufacturing of high-pressure discharge lamp greatly.Select enamel paint according to the material of shell 1 and the material of lamp holder 8.
In the example of Figure 1A and 1B, provide a kind of columniform shell 1 that is roughly.Fig. 2 shows an alternate embodiment according to high-pressure discharge lamp of the present invention.In the example of Fig. 2, provide a kind of spherical shell 1 that is roughly.
In the example of Figure 1A, 1B and 2, discharge vessel 11 is made by ceramic material.In Fig. 2, sealed exhaust tube 18 ' is provided in the shell 1.In shell, provide glass or quartz tubulation just to mean the blast pipe that can save in the lamp holder.Fig. 3 shows another alternate embodiment according to high-pressure discharge lamp of the present invention, and wherein discharge vessel 11 is made by quartz.In this embodiment, the ionizable fill in the discharge space comprises mercury, metal halide and rare gas.In the example of Fig. 3, the part of shell is roughly sphere.In the alternate embodiment shown in Fig. 4, blast pipe 18 has also formed feed-through tube, and power supply conductor 4 is fixed on this feed-through tube.
Atmospheric pressure in the shell controlled mean the structure that to simplify high-pressure discharge lamp and make its compact conformation.Especially, can significantly reduce the length of high-pressure discharge lamp.For this reason, high-pressure discharge lamp preferred embodiment is characterised in that distance between electrodes d
eWith the high-pressure discharge lamp height h of axis longitudinally
DlRatio be in the following scope:
0.02≤d
e/h
dl≤0.2。
According to the present invention, a kind of lamp design of simplification is provided, it can be used as the standarized component based on the product family of modularization capsule lamp.Discharge vessel 11 is supported on the power supply conductor 4,5 that is fixedly connected on the base plate 8.Discharge vessel 11 and power supply conductor 4,5 are arranged in shell 1, and shell 1 remains under the controlled atmospheric pressure.Just make the high-pressure discharge lamp compact conformation owing to saved press seal and tap (quartz) tubulature.Preferably, the height h of high-pressure discharge lamp
DlBe equal to or less than 50mm, preferably less than 40mm.In addition, because high-pressure discharge lamp is subjected to better control with respect to the manufacturing of longitudinal axis 22, and discharge vessel 11 can also accurately locate in the plane perpendicular to longitudinal axis 22, just eliminated the orientation problem of discharge vessel 11.
Should be pointed out that the foregoing description is not to be used to limit the present invention, under the situation of the scope that does not deviate from appended claims, those skilled in the art can design multiple alternate embodiment.In these claims, any reference marker that is positioned between the bracket is not to be understood that the restriction of paired claim.Use verb " to comprise " and various version is not got rid of in claim other element listed or the existence of step.Before an element, use article " ", " one " or " a kind of " not to get rid of the existence of a plurality of this elements.The present invention can realize by the hardware and the suitable computer of programming of utilization that comprise some different elements.In having enumerated the equipment claim of some devices, several can the realization in these devices by same hardware.Statement has been carried out in some measure in mutually different dependent claims the minimum fact does not show that the combination that can not use these measures is so that favourable.
Claims (9)
1. high-pressure discharge lamp comprises:
Shell (1), wherein discharge vessel (11) is provided with around longitudinal axis (22),
Discharge vessel (11), it is encapsulating the discharge space (13) that has ionizable fill with air tight manner,
Discharge vessel (11), it has first (2), second (3) opposite one another the neck, and first (4), second (5) power supply conductor passes described neck respectively and extends on the pair of electrodes (6,7) that is arranged in the discharge space (13),
By the lamp holder (8) that electrical insulating material is made, it is supporting discharge vessel (11) by first, second power supply conductor (4,5),
Lamp holder (8) has first (14), second (15) contact member that is connected on corresponding first, second power supply conductor (4,5),
Lamp holder (8) and/or first and/or second contact member (14,15) are as the end-of-life device.
2. high-pressure discharge lamp according to claim 1 is characterized in that, lamp holder (8) is made by soft glass, Bohemian glass or ceramic material.
3. high-pressure discharge lamp according to claim 1 and 2 is characterized in that, first, second contact member (14,15) is made by oxidation Ni-Fe-chromium material.
4. high-pressure discharge lamp according to claim 3 is characterized in that, first, second contact member (14,15) is made by the NiFeCr alloy.
5. high-pressure discharge lamp according to claim 1 and 2 is characterized in that, lamp holder (8) is supporting shell (1), and shell (1) is encapsulating first, second power supply conductor (4,5), and shell (1) is connected on the lamp holder (8) with air tight manner.
6. high-pressure discharge lamp according to claim 5 is characterized in that, first, second contact member (14,15) sends from shell (1).
7. high-pressure discharge lamp according to claim 1 and 2 is characterized in that, the blast pipe (18,18 ') of shell (1) that is used for finding time is provided in lamp holder (8) or is provided in the shell (1).
8. high-pressure discharge lamp according to claim 7 is characterized in that, the blast pipe (18) in the lamp holder (8) is made by metal or NiFeCr alloy.
9. high-pressure discharge lamp according to claim 1 and 2 is characterized in that, between the electrode (6,7) apart from d.With the high-pressure discharge lamp height h of axis (22) longitudinally
DlRatio be in the following scope:
0.02≤d
e/h
dl≤0.2。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP03076518 | 2003-05-21 | ||
| EP03076518.4 | 2003-05-21 | ||
| EP03102548.9 | 2003-08-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1791963A true CN1791963A (en) | 2006-06-21 |
| CN100538993C CN100538993C (en) | 2009-09-09 |
Family
ID=36788819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800138177A Expired - Fee Related CN100538993C (en) | 2003-05-21 | 2004-05-13 | High-pressure discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100538993C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102903600A (en) * | 2012-09-28 | 2013-01-30 | 陶子建 | Electric discharge pump |
-
2004
- 2004-05-13 CN CNB2004800138177A patent/CN100538993C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102903600A (en) * | 2012-09-28 | 2013-01-30 | 陶子建 | Electric discharge pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100538993C (en) | 2009-09-09 |
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Granted publication date: 20090909 Termination date: 20170513 |
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| CF01 | Termination of patent right due to non-payment of annual fee |