EP0209094B1 - High-pressure metal vapour discharge lamp - Google Patents
High-pressure metal vapour discharge lamp Download PDFInfo
- Publication number
- EP0209094B1 EP0209094B1 EP19860109536 EP86109536A EP0209094B1 EP 0209094 B1 EP0209094 B1 EP 0209094B1 EP 19860109536 EP19860109536 EP 19860109536 EP 86109536 A EP86109536 A EP 86109536A EP 0209094 B1 EP0209094 B1 EP 0209094B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- discharge vessel
- heat accumulation
- sleeve
- pressure metal
- discharge lamp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229910052751 metal Inorganic materials 0.000 title claims description 13
- 239000002184 metal Substances 0.000 title claims description 13
- 238000009825 accumulation Methods 0.000 claims description 23
- 229910000679 solder Inorganic materials 0.000 claims description 12
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 239000000956 alloy Substances 0.000 claims 1
- 150000002736 metal compounds Chemical class 0.000 claims 1
- 150000002739 metals Chemical class 0.000 claims 1
- 229910052756 noble gas Inorganic materials 0.000 claims 1
- 150000002835 noble gases Chemical class 0.000 claims 1
- 230000005855 radiation Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000497 Amalgam Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000010309 melting process Methods 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
- H01J61/523—Heating or cooling particular parts of the lamp
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/045—Thermic screens or reflectors
Definitions
- the invention relates to a high-pressure metal vapor discharge lamp according to the preamble of claim 1.
- heat exchange plates to improve the color temperature is particularly necessary for lamps of low power, since the inherent heat developed here is often no longer sufficient to achieve the required high vapor pressure of the amalgam inside the discharge vessel.
- the advantages of such heat exchange plates have long been known to the person skilled in the lamp construction sector. From DE-OS 29 28 067 a heat exchange plate surrounding the discharge space with a certain distance is known, about the fastening of which no information is given.
- the heat exchange plate in DE-PS 29 35 980 surrounds the electrode space closely and is clamped by means of two tabs bent over to the front of the discharge vessel.
- heat exchange shields in the form of closely surrounding metal sleeves are known, one end of which comprises the cover plate and the other end of which comprises the discharge vessel.
- EP-PA 83 201 801.4 describes a heat exchange plate which is cylindrical and surrounds the discharge space and is fastened to the holding wire in an electrically insulated manner by means of a glass bead and two connecting rods. With all known types of attachment of the heat exchange plate are either high expenses in terms of material and / or time required, or positioning by clamping is not ensured. In the former case, there are increased production costs, while when the heat exchange plate is fastened, vibrations of the lamp lead to changes in the operating voltage and thus to operating parameters which deviate from the target values.
- the object of the invention is to make the attachment of the heat exchange shield simpler and safer, on the one hand to be able to keep the operating values of the lamps within narrow tolerances and on the other hand to enable a reduction in the manufacturing costs.
- heat exchange shields are also fixed by means of the glass solder used for sealing the ends of the discharge vessel.
- the respective heat exchange shield surrounds the end of the discharge vessel in the form of a cuff, the fixation taking place in the region of an edge of the cuff and the liquid glass solder in those formed by the cuff and the discharge vessel Gap defined flows.
- tabs angled toward the longitudinal axis of the discharge vessel are provided, which abut the end face of the tubular discharge vessel.
- the sleeve causes the melting to heat up more quickly and evenly, since the ceramic tube is surrounded by the sleeve and this is made of the same material (niobium) as the power supply.
- the sleeve lies against the tubular discharge vessel at least in the edge region provided for the fixation. In a preferred embodiment, the larger part of the sleeve facing the discharge space is at a certain distance from the discharge vessel.
- the entire edge can be flanged or deep-drawn at right angles to the end face of the discharge vessel.
- the edge of the heat accumulation collar can also be used Depressions in the form of indentations which lie on the end face of the discharge vessel.
- the attachment is such that the heat accumulation sleeve is attached vibration-proof and potential-free to the respective ends of the discharge vessel.
- the aluminum oxide discharge vessel 1 has a cylindrical tube 6, a bush-shaped stopper 7 is sintered into the ends thereof is.
- the power supply 4 holding the electrode 5 is melted gas-tight by means of the glass solder ring 3.
- the construction described so far is conventional and known to the person skilled in the art.
- the cylindrical heat accumulation sleeve 2, which is made of niobium, is also placed on the end of the discharge vessel.
- the heat accumulation sleeve 2 surrounds the tube 6 closely and is provided on its upper side with tabs 9 which rest on the end face 10 of the tube 6.
- a part of the molten glass solder ring 3 flows through capillary forces into the gap formed by the tube 6 of the discharge vessel 1 and the heat accumulation collar 2, whereby the latter is held in position after the glass solder has cooled without additional operations or materials and enables a good heat exchange becomes.
- FIG. 2 An alternative form of the heat accumulation sleeve 11 is shown in FIG. 2. All operations and also the shape of the discharge vessel 1 are identical to that of FIG. 1.
- the heat accumulation sleeve 11 here consists of a short upper section 12 closely surrounding the discharge vessel 1, on which the tabs 9 'are formed, and of a longer one, the discharge vessel 1 with a certain distance surrounding lower section 13.
- the advantage of this embodiment is that the glass solder fills the entire upper edge area more uniformly and thus an even narrower tolerance range of the lamp parameters is maintained in the lamps produced.
- the conical heat accumulation collar works in a similar way 14 of FIG. 3.
- the discharge vessel 15 here has an upper cylindrical region of small diameter 16 and a region of larger diameter 17 through which the discharge flows, which are connected by a conical part 18, the electrode space.
- the conical heat accumulation collar 14 rests with its tabs 9 ′′ on the end face 19 of the discharge vessel 15 and surrounds the electrode space 18 at a certain distance after the melting and thus the fastening thereof has been carried out by means of the glass solder ring 3 ′.
- FIG. 4 shows a stepped, cylindrical heat accumulation collar 20 with a conical widening 22 facing the discharge vessel 21, which covers the electrode space of the discharge vessel 21.
- the holding takes place during the melting process by means of the tabs 9 '' '.
- the short upper section 23 of the heat accumulation collar 20 with a smaller diameter closely surrounds the upper end of the discharge vessel 21 and is fused here with the finished lamp, while the central, cylindrical section 24 is at a certain distance from the discharge vessel 21.
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Description
Die Erfindung betrifft eine Metalldampfhochdruckentladungslampe gemäß dem Oberbegriff des Anspruches 1.The invention relates to a high-pressure metal vapor discharge lamp according to the preamble of
Die Verwendung von Wärmestauschilden zur Verbesserung der Farbtemperatur ist insbesondere bei Lampen kleiner Leistung erforderlich, da die hier entwickelte Eigenwärme häufig nicht mehr ausreicht, um den benötigten hohen Dampfdruck des Amalgams im Innern des Entladungsgefäßes zu erreichen. Dem Fachmann auf dem Lampenbausektor sind die Vorteile solcher Wärmestauschilder seit langem bekannt. Aus der DE-OS 29 28 067 ist ein den Entladungsraum mit einem bestimmten Abstand zylinderförmig umgebendes Wärmestauschild bekannt, über dessen Befestigung keine Angaben gemacht sind. Das Wärmestauschild in der DE-PS 29 35 980 umgibt den Elektrodenraum eng anliegend und wird mittels zweier zur Stirnseite des Entladungsgefäßes umgebogener Laschen festgeklemmt. Aus der US-PS 4 464 603 sind Wärmestauschilde in Form von eng umgebenden Metallhülsen bekannt, deren eines Ende die Abschlußscheibe und deren anderes Ende das Entladungsgefäß umfassen. Die Fixierung der Metallhülsen erfolgt mittels Glaslot.
In der EP-PA 83 201 801.4 ist ein den Entladungsraum zylindrisch und mit Abstand umgebendes Wärmestauschild beschrieben, das über eine Glasperle und zwei Verbindungsstäbe am Haltedraht elektrisch isoliert befestigt ist. Bei allen bekannten Befestigungsarten des Wärmestauschildes sind entweder hohe Aufwendungen an Material und/oder Zeit erforderlich oder die Positionierung durch Klemmung ist nicht gesichert. Im ersteren Fall entstehen erhöhte Fertigungskosten, während bei der Klemmbefestigung des Wärmestauschildes Erschütterungen der Lampe zu Brennspannungsänderungen und damit zu von den Sollwerten abweichenden Betriebsparametern führen.The use of heat exchange plates to improve the color temperature is particularly necessary for lamps of low power, since the inherent heat developed here is often no longer sufficient to achieve the required high vapor pressure of the amalgam inside the discharge vessel. The advantages of such heat exchange plates have long been known to the person skilled in the lamp construction sector. From DE-OS 29 28 067 a heat exchange plate surrounding the discharge space with a certain distance is known, about the fastening of which no information is given. The heat exchange plate in DE-PS 29 35 980 surrounds the electrode space closely and is clamped by means of two tabs bent over to the front of the discharge vessel. From US Pat. No. 4,464,603, heat exchange shields in the form of closely surrounding metal sleeves are known, one end of which comprises the cover plate and the other end of which comprises the discharge vessel. The metal sleeves are fixed using glass solder.
EP-PA 83 201 801.4 describes a heat exchange plate which is cylindrical and surrounds the discharge space and is fastened to the holding wire in an electrically insulated manner by means of a glass bead and two connecting rods. With all known types of attachment of the heat exchange plate are either high expenses in terms of material and / or time required, or positioning by clamping is not ensured. In the former case, there are increased production costs, while when the heat exchange plate is fastened, vibrations of the lamp lead to changes in the operating voltage and thus to operating parameters which deviate from the target values.
Aufgabe der Erfindung ist es, die Befestigung des Wärmestauschildes einfacher und sicherer zu gestalten, um einerseits die Betriebswerte der Lampen in engeren Toleranzen halten zu können und andererseits eine Senkung der Herstellkosten zu ermöglichen.The object of the invention is to make the attachment of the heat exchange shield simpler and safer, on the one hand to be able to keep the operating values of the lamps within narrow tolerances and on the other hand to enable a reduction in the manufacturing costs.
Diese Aufgabe wird bei einer Metalldampfhochdruckentladungslampe mit den im Oberbegriff des Hauptanspruchs genannten Merkmalen dadurch gelöst, daß mittels des zur Abdichtung der Enden des Entladungsgefäßes verwendeten Glaslots auch die Fixierung der Wärmestauschilde vorgenommen ist. Das jeweilige Wärmestauschild umgibt das Ende des Entladungsgefäßes in Form einer Manschette, wobei die Fixierung im Bereich eines Randes der Manschette erfolgt und das flüssige Glaslot in den durch die Manschette und das Entladungsgefäß gebildeten Spalt definiert einfließt. An dem für die Fixierung vorgesehenen Rand des manschettenförmigen Wärmestauschildes sind zur Längsachse des Entladungsgefäßes hin abgewinkelte Laschen vorgesehen, die an der Stirnfläche des rohrförmigen Entladungsgefäßes anliegen. Hierdurch wird während des Einschmelzvorganges eine gute Zentrierung und genaue Justierung der Manschette erreicht. Bei dem fertig eingeschmolzenen Entladungsgefäß besteht so ein inniger Wärmekontakt zur Manschette. Die durch die Manschette bewirkte Dampfdruckerhöhung des Amalgams ist jederzeit reproduzierbar, wodurch die Brennspannung der Lampe in geringen Toleranzen gehalten werden kann. Darüber hinaus bewirkt die Manschette eine schnellere und gleichmäßigere Aufheizung der Einschmelzung, da das Keramikrohr von der Manschette umgeben ist und diese aus dem gleichen Material (Niob) wie die Stromzuführung besteht. Als weiteren Vorteil kann man werten, daß sich mit einem Typ von Keramikrohr bei unterschiedlicher Gestaltung der Länge der Manschette unterschiedliche Leistungsstufen herstellen lassen. Die Manschette liegt mindestens in dem für die Fixierung vorgesehenen Randbereich am rohrförmigen Entladungsgefäß an. In einer bevorzugten Ausführungsform weist der dem Entladungsraum zugewandte größere Teil der Manschette einen gewissen Abstand zum Entladungsgefäß auf.This object is achieved in a metal vapor high-pressure discharge lamp with the features mentioned in the preamble of the main claim in that the heat exchange shields are also fixed by means of the glass solder used for sealing the ends of the discharge vessel. The respective heat exchange shield surrounds the end of the discharge vessel in the form of a cuff, the fixation taking place in the region of an edge of the cuff and the liquid glass solder in those formed by the cuff and the discharge vessel Gap defined flows. On the edge of the sleeve-shaped heat exchange plate provided for the fixation, tabs angled toward the longitudinal axis of the discharge vessel are provided, which abut the end face of the tubular discharge vessel. As a result, good centering and precise adjustment of the sleeve is achieved during the melting process. When the discharge vessel is melted down, there is an intimate thermal contact with the cuff. The increase in vapor pressure of the amalgam caused by the cuff can be reproduced at any time, as a result of which the operating voltage of the lamp can be kept within narrow tolerances. In addition, the sleeve causes the melting to heat up more quickly and evenly, since the ceramic tube is surrounded by the sleeve and this is made of the same material (niobium) as the power supply. A further advantage can be seen that different power levels can be produced with one type of ceramic tube with different designs of the length of the sleeve. The sleeve lies against the tubular discharge vessel at least in the edge region provided for the fixation. In a preferred embodiment, the larger part of the sleeve facing the discharge space is at a certain distance from the discharge vessel.
Anstelle der an den Rand der Wärmestaumanschette angeformten Laschen sind auch andere Zentrier- und Stützmittel denkbar. So kann beispielsweise der gesamte Rand zur Stirnfläche des Entladungsgefäßes rechtwinklig umgebördelt oder tiefgezogen sein. Des weiteren kann der Rand der Wärmestaumanschette mit Vertiefungen in Form von Eindellungen versehen sein, die auf der Stirnfläche des Entladungsgefäßes aufliegen.Instead of the tabs formed on the edge of the heat accumulation collar, other centering and support means are also conceivable. For example, the entire edge can be flanged or deep-drawn at right angles to the end face of the discharge vessel. The edge of the heat accumulation collar can also be used Depressions in the form of indentations which lie on the end face of the discharge vessel.
Die Anbringung ist derart, daß die Wärmestaumanschette erschütterungsfest und potentialfrei an den jeweiligen Enden des Entladungsgefäßes befestigt ist.The attachment is such that the heat accumulation sleeve is attached vibration-proof and potential-free to the respective ends of the discharge vessel.
Die Erfindung wird im Detail anhand der nachfolgenden schematisch dargestellten Figuren erläutert:
Figur 1- zeigt eine erste Ausführungsform der Einschmelzung mit zylindrischem Wärmestauschild in explosionsartiger Darstellung
Figur 2- zeigt ein Ende eines Entladungsgefäßes mit einer alternativen Ausführungsform eines abgestuft zylindrischen Wärmestauschildes
Figur 3- zeigt eine dritte Ausführungsform einer Einschmelzung mit konischem Wärmestauschild in explosionsartiger Darstellung
Figur 4- zeigt eine weitere Ausführungsform eines Endes eines Entladungsgefäßes mit daran angepaßtem Wärmestauschild
- Figure 1
- shows a first embodiment of the melt with a cylindrical heat exchange plate in an exploded view
- Figure 2
- shows an end of a discharge vessel with an alternative embodiment of a stepped cylindrical heat exchange plate
- Figure 3
- shows a third embodiment of a melt with a conical heat exchange plate in an exploded view
- Figure 4
- shows a further embodiment of an end of a discharge vessel with an adapted heat exchange plate
Die explosionsartge Darstellung der Figur 1 besteht aus einem Entladungsgefäß 1, von dem hier nur ein Ende dargestellt ist, einer Wärmestaumanschette 2, einem Glaslotring 3 und einer Stromzuführung 4 mit daran befestigter Elektrode 5. Das Entladungsgefäß 1 aus Aluminiumoxid weist ein zylindrisches Rohr 6 auf, in dessen Enden je ein buchsenförmiger Stopfen 7 eingesintert ist. In den axialen Hohlraum 8 des Stopfens 7 wird mittels des Glaslotringes 3 die die Elektrode 5 halternde Stromzuführung 4 gasdicht eingeschmolzen. Die bisher beschriebene Konstruktion ist konventionell und dem Fachmann bekannt. Bei der Montage und vor dem gasdichten Verschmelzen der zuvor genannten Teile wird dem Ende des Entladungsgefäßes auch die aus Niob bestehende zylinderförmige Wärmestaumanschette 2 aufgesetzt. Die Wärmestaumanschette 2 umgibt das Rohr 6 eng anliegend und ist an ihrer Oberseite mit Laschen 9 versehen, die auf der Stirnfläche 10 des Rohres 6 aufliegen. Bei der Herstellung der gasdichten Einschmelzung fließt ein Teil des geschmolzenen Glaslotringes 3 durch Kapillarkräfte in den durch das Rohr 6 des Entladungsgefäßes 1 und die Wärmestaumanschette 2 gebildeten Spalt, wodurch letztere nach Erkalten des Glaslotes ohne zusätzliche Arbeitsgänge oder Materialien in Position gehalten und ein guter Wärmeaustausch ermöglicht wird.1 consists of a
Eine alternative Form der Wärmestaumanschette 11 ist in Figur 2 dargestellt. Sämtliche Arbeitsgänge sowie auch die Gestalt des Entladungsgefäßes 1 sind identisch mit der Figur 1. Die Wärmestaumanschette 11 besteht hier aus einem kurzen, das Entladungsgefäß 1 eng umgebenden oberen Abschnitt 12, an dem die Laschen 9' angeformt sind, und aus einem längeren, das Entladungsgefäß 1 mit einem bestimmten Abstand umgebenden unteren Abschnitt 13. Der Vorteil dieser Ausführungsform liegt darin, daß das Glaslot den gesamten oberen Randbereich gleichmäßiger ausfüllt und somit bei den hergestellten Lampen ein noch engerer Toleranzbereich der Lampenparameter eingehalten wird.An alternative form of the
Auf ähnliche Weise wirkt die konische Wärmestaumanschette 14 der Figur 3. Das Entladungsgefäß 15 weist hier einen oberen zylindrischen Bereich kleinen Durchmessers 16 und einen von der Entladung durchströmten Bereich größeren Durchmessers 17 auf, die durch einen konischen Teil 18, dem Elektrodenraum, verbunden sind. Die konische Wärmestaumanschette 14 liegt mit ihren Laschen 9'' auf der Stirnfläche 19 des Entladungsgefäßes 15 auf und umgibt den Elektrodenraum 18 in einem gewissen Abstand, nachdem die Einschmelzung und damit die Befestigung desselben mittels des Glaslotringes 3' vorgenommen wurde.The conical heat accumulation collar works in a
Die Figur 4 zeigt eine abgestuft zylinderförmige Wärmestaumanschette 20 mit einer dem Entladungsgefäß 21 zugewandten konischen Erweiterung 22, die den Elektrodenraum des Entladungsgefäßes 21 abdeckt. Wie in den vorangegangenen Ausführungsbeispielen ausgeführt, erfolgt die Halterung während des Einschmelzvorganges mittels der Laschen 9''' . Der kurze obere Abschnitt 23 der Wärmestaumanschette 20 mit kleinerem Durchmesser umgibt das obere Ende des Entladungsgefäßes 21 eng anliegend und ist hier mit demselben bei der fertigen Lampe verschmolzen, während der mittlere, zylinderförmige Abschnitt 24 einen gewissen Abstand zum Entladungsgefäß 21 aufweist.FIG. 4 shows a stepped, cylindrical
Claims (6)
- High-pressure metal vapour discharge lamp- having a tubular discharge vessel (1, 17, 21) of transparent ceramic,- which has a vacuum-tight seal at both ends and- which contains, in its interior, electrodes (5) and the metals, metal compounds or alloys provided as filling and one or more noble gases,- current leads (4) for the electrodes (5) being carried through the ends with vacuum-tight seals, and- in which glass solder (3, 3') is used as seal,- and having heat accumulation shields (2, 11, 14, 20) of metal which are attached to the ends of the discharge vessel (1, 17, 21) on the outside and which absorb the heat radiation generated in the area of the electrode spaces and deliver it to the coldest points in the discharge vessel (1, 17, 21),- the heat accumulation shields (2, 11, 14, 20) being fixed to the discharge vessel (1, 17, 21) by means of glass solder (3, 3'), characterised in that the heat accumulation shields (2, 11, 14, 20) are also fixed by means of the glass solder (3, 3') used for sealing the ends of the discharge vessel (1, 17, 21).
- High-pressure metal vapour discharge lamp according to Claim 1, characterised in that the respective heat accumulation shield (2, 11, 14, 20) surrounds the end of the discharge vessel in the form of a sleeve, the fixing occurring in the area of one edge of the sleeve.
- High-pressure metal vapour discharge lamp according to Claim 2, characterised in that the edge of the sleeve-shaped heat accumulation shield (2, 11, 14, 20) provided for the fixing is provided with means (9, 9', 9'', 9''') which rest on the end face (10, 19) of the tubular discharge vessel (1, 17, 21) and support the heat accumulation shield (2, 11, 14, 20) on the latter.
- High-pressure metal vapour discharge lamp according to Claim 3, characterised in that the edge of the sleeve-shaped heat accumulation shield (2, 11, 14, 20) provided for the fixing exhibits lugs (9, 9', 9'', 9''') which are angled towards the longitudinal axis of the discharge vessel (1, 17, 21) and these lugs (9, 9', 9'', 9''') rest against the end face (10, 19) of the wall of the tubular discharge vessel (1, 17, 21).
- High-pressure metal vapour discharge lamp according to Claim 3 and 4, characterised in that the sleeve-shaped heat accumulation shield (2, 11, 14, 20) rests against the tubular discharge vessel (1, 17, 21) in the edge area provided for the fixing and the remaining part of the heat accumulation shield (2, 11, 14, 20) is at a certain distance from the discharge vessel (1, 17, 21).
- High-pressure metal vapour discharge lamp according to Claim 3 and 4, characterised in that the sleeve-shaped heat accumulation shield (2, 11, 14, 20) rests over its entire length against the tubular discharge vessel (1, 17, 21).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853525886 DE3525886A1 (en) | 1985-07-19 | 1985-07-19 | METAL STEAM HIGH PRESSURE DISCHARGE LAMP |
| DE3525886 | 1985-07-19 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0209094A2 EP0209094A2 (en) | 1987-01-21 |
| EP0209094A3 EP0209094A3 (en) | 1989-05-24 |
| EP0209094B1 true EP0209094B1 (en) | 1992-10-14 |
Family
ID=6276244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19860109536 Expired - Lifetime EP0209094B1 (en) | 1985-07-19 | 1986-07-11 | High-pressure metal vapour discharge lamp |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0209094B1 (en) |
| JP (1) | JPS6226758A (en) |
| DE (2) | DE3525886A1 (en) |
| HU (1) | HU196675B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1280735A (en) * | 1969-08-29 | 1972-07-05 | Matsushita Electronics Corp | High pressure metal-vapour discharge tube |
| MX144086A (en) * | 1975-12-15 | 1981-08-26 | Gen Electric | IMPROVEMENTS IN A HIGH PRESSURE METAL STEAM DISCHARGE LAMP |
| US4230964A (en) * | 1978-07-11 | 1980-10-28 | Westinghouse Electric Corp. | Color high-pressure sodium vapor lamp |
| US4464603A (en) * | 1982-07-26 | 1984-08-07 | General Electric Company | Ceramic seal for high pressure sodium vapor lamps |
-
1985
- 1985-07-19 DE DE19853525886 patent/DE3525886A1/en not_active Withdrawn
-
1986
- 1986-07-11 DE DE8686109536T patent/DE3686962D1/en not_active Expired - Fee Related
- 1986-07-11 EP EP19860109536 patent/EP0209094B1/en not_active Expired - Lifetime
- 1986-07-18 JP JP16821286A patent/JPS6226758A/en active Pending
- 1986-07-18 HU HU296886A patent/HU196675B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0209094A2 (en) | 1987-01-21 |
| HUT41159A (en) | 1987-03-30 |
| JPS6226758A (en) | 1987-02-04 |
| HU196675B (en) | 1988-12-28 |
| DE3686962D1 (en) | 1992-11-19 |
| DE3525886A1 (en) | 1987-01-29 |
| EP0209094A3 (en) | 1989-05-24 |
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