DE647009C - Process for the production of double-walled high-pressure metal vapor discharge lamps with incandescent electrodes - Google Patents
Process for the production of double-walled high-pressure metal vapor discharge lamps with incandescent electrodesInfo
- Publication number
- DE647009C DE647009C DEG89554D DEG0089554D DE647009C DE 647009 C DE647009 C DE 647009C DE G89554 D DEG89554 D DE G89554D DE G0089554 D DEG0089554 D DE G0089554D DE 647009 C DE647009 C DE 647009C
- Authority
- DE
- Germany
- Prior art keywords
- metal vapor
- discharge lamps
- vapor discharge
- pressure metal
- double
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/34—Double-wall vessels or containers
Landscapes
- Discharge Lamp (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
Die Erfindung bezieht sich auf ein Verfahren zum Herstellen" von Hochdrucfcmetalldampfentladungslampen mit Glühelektroden und mit einem inneren Entladungsgefäß aus Hartglas und einem dieses umschließenden Mantelgefäß.The invention relates to a method for the manufacture of "high-pressure metal vapor discharge lamps with glow electrodes and with an inner discharge vessel made of hard glass and one surrounding it Jacket vessel.
Das Mantelgefäß derartiger Hochdruckentladungslampen wird, um Wärmeverluste des Innengefäßes zu vermeiden oder stark herabzusetzen, für gewöhnlich so weit entlüftet, daß der zwischen beiden Gefäßen herrschende Druck weniger als 1 mm Quecksilbersäule beträgt. The jacket vessel of such high pressure discharge lamps is used to prevent heat losses from the To avoid or greatly reduce the inner vessel, usually vented to the extent that that the pressure between the two vessels is less than 1 mm of mercury.
Bekanntlich neigen Hochdruckentladungslampen während des Brennens zu einer Schwärzung der Innenfläche des Entladungsgefäßes. Diese Schwärzung macht sich besonders an den Stellen bemerkbar, an welchen 'die Außenfläche des Entladungsgefäßes mit Metall in Berührung steht.It is well known that high-pressure discharge lamps tend During the firing process, the inner surface of the discharge vessel becomes blackened. This blackening makes it special noticeable at the points where the outer surface of the discharge vessel is in contact with metal.
Der Zweck der Erfindung ist nun," die Schwärzung des Entladungsgefäßes weit-• gehend zu verzögern und dadurch die Lebensdauer der Röhre zu verlängern sowie den Wirkungsgrad der Lampe zu erhöhen.The purpose of the invention is now, "the blackening of the discharge vessel far- • going to delay and thereby extend the life of the tube as well as the Increase the efficiency of the lamp.
Zum Erreichen des angestrebten Zweckes wird das Mantelgefäß einer doppelwandigen Hochdruckmetalldampfentladungslampe mit Glühelektroden, deren inneres Entladungsgefäß aus Hartglas besteht, erfindungsgemäß auf einen Druck von etwa iXio~5mm Quecksilbersäule entlüftet und dann mit Wasserstoff oder Sauerstoff gefüllt. Der Druck dieser Füllung ist zweckmäßig höher als 1 mm und kann vorteilhaft zwischen 5 und 20 mm Quecksilbersäule liegen.To achieve the intended purpose, the jacket vessel of a double-walled high-pressure metal vapor discharge lamp with glow electrodes, the inner discharge vessel of which is made of hard glass, is vented according to the invention to a pressure of about iXio ~ 5 mm of mercury and then filled with hydrogen or oxygen. The pressure of this filling is expediently higher than 1 mm and can advantageously be between 5 and 20 mm of mercury.
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1221/34A GB431651A (en) | 1934-01-12 | 1934-01-12 | Improvements in or relating to electric discharge devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE647009C true DE647009C (en) | 1937-06-25 |
Family
ID=9718224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEG89554D Expired DE647009C (en) | 1934-01-12 | 1935-01-12 | Process for the production of double-walled high-pressure metal vapor discharge lamps with incandescent electrodes |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2030437A (en) |
| DE (1) | DE647009C (en) |
| FR (1) | FR784009A (en) |
| GB (1) | GB431651A (en) |
| NL (1) | NL41741C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3714492A (en) * | 1971-05-03 | 1973-01-30 | Gte Sylvania Inc | Dc fluorescent lamp with improved efficiency |
| FR2386135A1 (en) * | 1977-03-30 | 1978-10-27 | Gte Sylvania Inc | High pressure sodium vapour lamp - has multiple turn wire starting aid coiled around arc tube intermediate to electrodes |
| US4598225A (en) * | 1983-02-25 | 1986-07-01 | Gte Products Corporation | Electric lamp with high outer-envelope to inner-envelope wall-thickness ratio |
-
0
- NL NL41741D patent/NL41741C/xx active
-
1934
- 1934-01-12 GB GB1221/34A patent/GB431651A/en not_active Expired
-
1935
- 1935-01-07 US US750A patent/US2030437A/en not_active Expired - Lifetime
- 1935-01-11 FR FR784009D patent/FR784009A/en not_active Expired
- 1935-01-12 DE DEG89554D patent/DE647009C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL41741C (en) | |
| FR784009A (en) | 1935-07-20 |
| US2030437A (en) | 1936-02-11 |
| GB431651A (en) | 1935-07-12 |
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