EP0888634B1 - Lampe a decharge basse pression - Google Patents
Lampe a decharge basse pression Download PDFInfo
- Publication number
- EP0888634B1 EP0888634B1 EP97931677A EP97931677A EP0888634B1 EP 0888634 B1 EP0888634 B1 EP 0888634B1 EP 97931677 A EP97931677 A EP 97931677A EP 97931677 A EP97931677 A EP 97931677A EP 0888634 B1 EP0888634 B1 EP 0888634B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- low
- mercury
- pressure discharge
- discharge lamp
- discharge vessel
- 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
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
- H01J61/24—Means for obtaining or maintaining the desired pressure within the vessel
Definitions
- the invention relates to a low-pressure discharge lamp according to the Preamble of protection claim 1.
- Japanese laid-open patent publication JP 6-96728 discloses a low-pressure mercury vapor discharge lamp with two in the ends of the tubular discharge vessel melted, essentially identical electrode racks.
- the electrode racks point each have an electrode coil arranged transversely to the discharge vessel axis on that by a ring-shaped metal band - a so-called Ring cap - is surrounded.
- the ring axis of this ring-shaped Metal strip runs parallel to the discharge vessel axis.
- the ring cap is composed of two parts, one of which Section with an amalgam, in particular with a mercury-titanium alloy is coated, while the other section with a getter layer is provided, the gaseous impurities in the Discharge vessel binds.
- the amount of mercury in the low-pressure discharge lamp is controlled over the length of the first section.
- the ring caps are with the help of an electromagnetic high frequency signal inductively on a Temperature heated from approx. 900 ° C to 950 ° C. This will on the one hand the getter activates and on the other hand the mercury from the Mercury alloy released.
- the required high frequency signal is usually generated using a high-frequency inductor, the one induction loop with two long ones parallel to each other has running legs and that at the location of the ring caps generates an electromagnetic radio frequency field, its magnetic field essentially parallel to the discharge vessel axis and thus also runs parallel to the ring axis of the ring caps.
- the lamps need about 20 to pass through this radio frequency field up to 30 seconds.
- Such ring caps are due to their dimensions for low-pressure discharge lamps, their discharge vessel has an outer diameter of less than or equal to 16 mm, not suitable.
- the German patent DE 26 16 577 describes a low-pressure discharge lamp, in particular a fluorescent lamp with a Mercury-containing ionizable filling inside the discharge vessel is provided.
- the mercury content in the ionizable discharge medium here is approximately 5 mg to 20 mg.
- a carrier body with a coating containing mercury and also with a Getter is provided, introduced into the discharge vessel.
- the mercury-containing Coating and getter are parallel to one another Longitudinal axis of the lamp arranged metal strips, the component an electrode frame of the low-pressure discharge lamp is applied, that is, the coated surfaces of the metal strip run essentially parallel to the axis.
- the metal strip is during lamp manufacture using an electromagnetic radio frequency signal for about 20 to 30 seconds to a temperature of about 900 ° C to. 950 ° C inductively heated.
- European patent application EP 0 473 164 A2 discloses a low-pressure discharge lamp with plate-like, V-shaped electrodes that form a getter layer and wear a coating containing mercury.
- this support body is also intended for low-pressure discharge lamps be suitable which have a mercury content of less than Have 10 mg and their discharge vessel outer diameter smaller or equal Is 16 mm.
- the high-frequency inductor which is used to manufacture the the low-pressure discharge lamps equipped with the ring caps described above is used, also for the production of those provided with the improved carrier body Lamps can be used so that no conversion of the production line is required is.
- the low-pressure discharge lamp according to the invention has a tubular discharge vessel, which has a longitudinal axis at least in the area of its ends and in the interior of which is arranged one or more carrier bodies, the at least one a first surface provided with a coating containing mercury and has or have at least one second surface provided with a getter layer.
- carrier bodies are perpendicular to the longitudinal axis of the discharge vessel end or arranged to the longitudinal axes of the discharge vessel ends.
- the carrier body of the low-pressure discharge lamps according to the invention with the help of usually for inductive heating of the ring caps high-frequency inductor used are sufficiently inductively heated can.
- the lamp ends or pass through Discharge vessel ends the electromagnetic field of the high-frequency inductor, whose magnetic field lines at the location of the carrier body substantially parallel to Longitudinal axis of the discharge vessel or the discharge vessel end run. Since the surfaces provided with the getter layer and the mercury-containing coating of the support body arranged perpendicular to the longitudinal axis of the discharge vessel end are due to the electromagnetic field of the high-frequency inductor its favorable orientation, in the area of these coated surfaces of the carrier body a comparatively high current induces and therefore sufficient heating of these areas.
- the carrier body consists of a sheet metal, which with the Getter material and coated with the mercury alloy.
- This sheet of metal takes up less space than a ring cap and is therefore particularly suitable for Low-pressure discharge lamps, the discharge vessel of which is only a comparative one small diameter - in particular a discharge vessel outer diameter less than or equal to 16 mm - has or where the use of a ring cap is disadvantageous.
- the application of the invention lends itself to Low-pressure discharge lamps with a comparatively low mercury content of less than 10mg in the ionizable filling, where one Liquid dosing of the mercury in the discharge vessel would be problematic.
- a complete release of the in the Mercury-containing coating of bound mercury and thus an optimal one Heating the support body is particularly important so that it is in the discharge space can set the optimal mercury vapor pressure during lamp operation.
- the carrier body is advantageous as a substantially flat, perpendicular to the longitudinal axis of the discharge vessel end aligned metal sheet formed, the front with the mercury-containing Coating and the back of which is provided with the getter layer.
- These metal sheets are advantageously with a power supply wire for the Electrode filament of the lamp welded. This will make the structure of the Electrode rack allows.
- the carrier body advantageously formed as a U-shaped sheet metal, the transverse U-legs with the getter material arranged to the longitudinal axis of the discharge vessel end and are coated with the mercury alloy.
- the lamp according to the invention is a low-pressure mercury vapor discharge lamp and especially a fluorescent lamp.
- This Lamp has a tubular discharge vessel 10, 20, 40 which is rod-shaped, U-shaped or can be bent several times. The two ends of the discharge vessel are sealed gas-tight. With the ends of the discharge vessel 10, 20, 40 is in each case an electrode frame 11, 21, 41 fused.
- the electrode racks 11, 21, 41 each have an electrode coil 11a, 21a, 41a and two with the Ends of the electrode filaments 11a, 21a, 41a electrically connected power supply wires 11b, 11c, 21b, 21c, 41b, 41c.
- the electrode coils 11a, 21a, 41a are in the interior of the discharge vessel 10, 20, 40 and transverse to the longitudinal axis A-A of the end of the discharge vessel 10, 20, 40 arranged.
- the outside diameter of the discharge vessel 10, 20, 40 is approximately 16 mm.
- On one of the two electrode racks 11, 21, 41 is a coated with a getter 14, 24, 44 and with a metal sheet 12, 22, 42 provided with a coating 13, 23, 43 containing mercury attached.
- the metal sheets act as a carrier body for the getter material and for the layer containing mercury.
- the getter material 14, 24, 44 is a zirconium aluminum getter and for the mercury-containing layer 13, 23, 43 a mercury-titanium alloy.
- the power supply wires 11b, 11c, 21b, 21c, 41b, 41c are led out of the end of the discharge vessel 10, 20, 40. That brought into the discharge vessel 10, 20, 40 with the aid of the carrier body
- the amount of mercury is approx. 3 mg. So far, all of the exemplary embodiments are the same.
- FIG. 1 and 2 is an end of a low pressure discharge lamp according to the first embodiment of the invention shown in a schematic representation.
- the end of the discharge vessel 10 is with the electrode frame 11 according to the Kind of a so-called plate foot melting 11d, 11f fused.
- the electrode rack 11 consists of a glass plate base 10d, the widened edge 11f with the end of the tubular discharge vessel 10 is fused in a gastight manner an electrode coil arranged transversely to the longitudinal axis A-A of the discharge vessel end 11a and two power supply wires 11b, 11c, each electrical are conductively connected to one end of the electrode coil 11a and which in the plate base 11d are melted.
- the glass plate base 11d is with a Pump stem 11e provided, which serves to evacuate the discharge vessel 10.
- On the one power supply wire 11b is a rectangular, substantially flat one Welded metal sheet 12, one side of the mercury-containing coating 13 carries while the other side is coated with the getter 14.
- the metal sheet 12 is aligned perpendicular to the longitudinal axis A-A, so that the coated with the getter 14 Underside of the metal sheet 12 the plate base 11d and the one with the mercury-containing one Layer provided top of the metal sheet 12 of the electrode coil 11a is facing.
- the metal sheet 12 has at its edge welding tab 12a bent at right angles.
- FIGS 3 and 4 show one end of a low pressure discharge lamp according to the second embodiment of the invention in a schematic representation.
- the end of the discharge vessel 20 is, completely analogous to the first exemplary embodiment, with the electrode frame 21 in the manner of a plate base melting 21d, 21f merged.
- the electrode frame 21 of the second embodiment does not differ from the electrode frame 11 of the first Embodiment. It also consists of an electrode coil 21a, two Power supply wires 21b, 21c and one provided with a pump handle 21e Glass plate foot 21d, the widened edge 21f of which merged with the discharge vessel end is.
- the second Embodiment a U-shaped metal sheet 22, which is used as a support body serves for the getter 24 and the layer 23 containing mercury. That the two U-legs connecting base part of the metal sheet 22 is with the one power supply wire 21b welded so that the outer and inner sides of the U-legs aligned perpendicular to the longitudinal axis A-A of the end of the discharge vessel 20 are.
- the mercury-containing coating 23 is on the outside of the electrode coil 21a facing U-leg of the metal sheet 22 applied while the getter layer on the outside of the other facing plate foot 21d U-leg of the metal sheet 12 is applied.
- FIG. 5 shows a schematic illustration of one end of a low-pressure discharge lamp according to the third embodiment of the invention.
- the electrode rack 41 in this embodiment consists of a transverse to the longitudinal axis A-A of the discharge vessel of the aligned electrode filament 41a, two power supply wires 41b, 41c and a glass bead 41d.
- the power supply wires 41b, 41c are each electrically conductively connected to one end of the electrode coil 41a and melted into the glass bead 41d.
- the glass bead 41 gives that Electrode frame 41 mechanical stability.
- the end of the discharge vessel 40 is sealed gas-tight by means of a pinch seal 40a.
- the power supply wires 41b, 41c are sealed gas-tight in the pinch seal 40a and protrude the end of the discharge vessel.
- On one power supply wire 40b is one Welded metal sheet 42, one side of the mercury-containing coating 43 carries, while the other side is coated with the getter 44.
- the metal sheet 42 is aligned perpendicular to the longitudinal axis A-A of the discharge vessel end, so that the underside of the metal sheet 42 of the pinch seal coated with the getter 44 40a and the top of the metal sheet provided with the layer containing mercury 12 faces the electrode coil 41a.
- To weld the To facilitate metal sheet 42 with the power supply wire 41b the metal sheet 42 on its edge a right-angled welding lug 42a.
- the invention is not limited to the exemplary embodiments explained in more detail above.
- the carrier body according to the exemplary embodiments one and three, for example with the help of a fastening wire, in the glass plate base or to fix in the glass bead.
- the mercury-titanium alloy instead of the mercury-titanium alloy other alloys or compounds containing mercury for the mercury-containing coating of the carrier body according to the invention be used.
Landscapes
- Discharge Lamp (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Claims (10)
- Lampe à décharge basse pression ayant une enceinte (10 ; 20 ; 40) tubulaire de décharge et un ou plusieurs supports (12 ; 22 ; 42) disposés à l'intérieur de l'enceinte (10 ; 20 ; 40) de décharge, dans laquellel'enceinte (10 ; 20 ; 40) de décharge a au moins dans la région de ses extrémités un axe (A-A) longitudinal,le support ou les supports (12 ; 22 ; 42) comporte(nt) au moins une première surface qui est munie d'un revêtement (13 ; 23 ; 43) contenant du mercure,le support ou les supports (12 ; 22 ; 42) comporte(nt) au moins une deuxième surface qui est revêtue d'une matière (14 ; 24 ; 44) de getter,
- Lampe à décharge basse pression suivant la revendication 1, caractérisée en ce que le support ou les supports (12 ; 22 ; 42) est (sont) constitué(s) en une tôle métallique.
- Lampe à décharge basse pression suivant la revendication 2, caractérisée en ce que la matière (14 ; 24 ; 44) de getter et le revêtement (13 ; 23 ; 43) contenant du mercure sont disposés sur des côtés ou des surfaces différents de la tôle (12 ; 22 ; 42) métallique.
- Lampe à décharge basse pression suivant la revendication 2, caractérisée en ce que la tôle métallique est coudée en forme de U, la matière (24) de getter et le revêtement (23) contenant du mercure étant disposés sur des branches différentes de la tôle (22) métallique en forme de U et les branches du U sont dirigées transversalement à l'axe (A-A) longitudinal de l'enceinte (20) de décharge.
- Lampe à décharge basse pression suivant la revendication 1, caractérisée en ce que la lampe à décharge basse pression a deux monture (11 ; 21 ; 41) d'électrode reliées aux extrémités de l'enceinte (10 ; 20 ; 40) de décharge, un support (12 ; 22 ; 42) étant fixé à l'une des montures (11 ; 21 ; 41) d'électrode.
- Lampe à décharge basse pression suivant la revendication 5, caractérisée en ce qu'un support (12 ; 22 ; 42) est fixé à chacune des montures (11 ; 21 ; 41) d'électrode.
- Lampe à décharge basse pression suivant la revendication 5 ou 6, caractérisée en ce que le support (12 ; 22 ; 42) est fixé à un fil métallique d'entrée de courant de la monture (11 ; 21 ; 41) d'électrode.
- Lampe à décharge basse pression suivant la revendication 5 ou 6, caractérisée en ce que le support est fixé à la monture d'électrode au moyen d'un fil métallique de fixation.
- Lampe à décharge basse pression suivant la revendication 1, caractérisée en ce que la teneur en mercure du revêtement contenant du mercure est inférieure à 10 mg.
- Lampe à décharge basse pression suivant la revendication 1, caractérisée en ce que le diamètre extérieur de l'enceinte (10 ; 20 ; 40) tubulaire de décharge est inférieur ou égal à 16 mm.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29616879U | 1996-09-30 | ||
DE29616879U DE29616879U1 (de) | 1996-09-30 | 1996-09-30 | Niederdruckentladungslampe |
PCT/DE1997/001355 WO1998014983A1 (fr) | 1996-09-30 | 1997-06-27 | Lampe a decharge basse pression |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0888634A1 EP0888634A1 (fr) | 1999-01-07 |
EP0888634B1 true EP0888634B1 (fr) | 2002-02-13 |
Family
ID=8029845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97931677A Expired - Lifetime EP0888634B1 (fr) | 1996-09-30 | 1997-06-27 | Lampe a decharge basse pression |
Country Status (14)
Country | Link |
---|---|
US (1) | US6043603A (fr) |
EP (1) | EP0888634B1 (fr) |
JP (1) | JPH11500865A (fr) |
KR (1) | KR100371018B1 (fr) |
CN (1) | CN1118856C (fr) |
AU (1) | AU729283B2 (fr) |
BR (1) | BR9706769A (fr) |
CA (1) | CA2238927C (fr) |
CZ (1) | CZ294861B6 (fr) |
DE (2) | DE29616879U1 (fr) |
HU (1) | HU220820B1 (fr) |
IN (1) | IN192589B (fr) |
SK (1) | SK284606B6 (fr) |
WO (1) | WO1998014983A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011078152A1 (de) | 2011-06-27 | 2012-12-27 | Narva Lichtquellen Gmbh + Co. Kg | Niederdruckentladungslampe mit in Abschirmung eingebrachtem Getter |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6639351B1 (en) * | 1999-03-19 | 2003-10-28 | Industrial Technologies Research Institute | Planar fluorescent lamp with flat electrodes and method for fabricating |
US6380676B1 (en) * | 2000-01-03 | 2002-04-30 | General Electric Company | Discharge lamp with end of life arc extinguishing structure |
US6853118B2 (en) * | 2001-05-03 | 2005-02-08 | General Electric Company | Control of leachable mercury in mercury vapor discharge lamps |
DE10325554A1 (de) | 2003-06-05 | 2004-12-23 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Verfahren zur Herstellung einer elektrischen Lampe mit Außenkolben |
DE10325552A1 (de) * | 2003-06-05 | 2004-12-23 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Elektrische Lampe mit Außenkolben und zugehöriger Trägerkörper |
EP1649489A2 (fr) * | 2003-06-26 | 2006-04-26 | Koninklijke Philips Electronics N.V. | Lampe a decharge a vapeur de mercure a basse pression |
ITMI20042516A1 (it) * | 2004-12-27 | 2005-03-27 | Getters Spa | Processo per produrre mediante deposizione di lega bassofondente dispositivi portanti almeno un materiale attivo |
DE102007033878A1 (de) | 2007-07-20 | 2009-01-22 | Osram Gesellschaft mit beschränkter Haftung | Trägerelement, an welchem ein Hg-haltiges Material zur Anbringung in einer Entladungslampe ausgebildet ist, sowie ein Verfahren zu dessen Herstellung und eine Entladungslampe mit einem derartigen Trägerelement |
DE102007033879A1 (de) * | 2007-07-20 | 2009-01-22 | Osram Gesellschaft mit beschränkter Haftung | Trägerelement, an welchem ein Hg-haltiges Material zur Anbringung in eine Entladungslampe ausgebildet ist, und Entladungslampe mit einem derartigen Trägerelement |
DE102007046342A1 (de) | 2007-09-27 | 2009-04-02 | Osram Gesellschaft mit beschränkter Haftung | Quecksilberhaltiges Element für eine Entladungslampe sowie Trägerteil und Entladungslampe mit einem quecksilberhaltigen Element |
ITMI20082187A1 (it) * | 2008-12-11 | 2010-06-12 | Getters Spa | Sistema dispensatore di mercurio per lampade a fluorescenza |
ITMI20100285A1 (it) * | 2010-02-23 | 2011-08-24 | Getters Spa | Metodo e sistema per l'erogazione controllata di mercurio e dispositivi prodotti con tale metodo |
DE102011006700A1 (de) * | 2011-04-04 | 2012-10-04 | Osram Ag | Entladungslampe, insbesondere Quecksilber-Niederdruckentladungslampe, sowie Verfahren zum Herstellen einer Entladungslampe |
DE102011006708A1 (de) * | 2011-04-04 | 2012-10-04 | Osram Ag | Entladungslampe, insbesondere Quecksilber-Niederdruckentladungslampe |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2616577A1 (de) * | 1975-04-21 | 1976-11-04 | Gte Sylvania Inc | Niederdruck-quecksilberdampflampe |
US4308650A (en) * | 1979-12-28 | 1982-01-05 | Gte Products Corporation | Method of making a mercury dispenser, getter and shield assembly for a fluorescent lamp |
IT1227338B (it) * | 1988-09-12 | 1991-04-08 | Getters Spa | Nastro getter atto ad emettere vapori di mercurio, utilizzabile nella formazione di catodi freddi per lampade fluorescenti. |
US5256935A (en) * | 1990-08-30 | 1993-10-26 | Toshiba Lighting & Technology Corporation | Low pressure mercury vapor discharge lamp having cold cathode |
JPH04149954A (ja) * | 1990-10-15 | 1992-05-22 | Erebamu:Kk | 放電灯 |
JP3205075B2 (ja) * | 1992-07-27 | 2001-09-04 | 東芝ライテック株式会社 | 低圧水銀蒸気放電灯 |
-
1996
- 1996-09-30 DE DE29616879U patent/DE29616879U1/de not_active Expired - Lifetime
-
1997
- 1997-06-27 SK SK181-98A patent/SK284606B6/sk not_active IP Right Cessation
- 1997-06-27 HU HU9901384A patent/HU220820B1/hu not_active IP Right Cessation
- 1997-06-27 CZ CZ1998389A patent/CZ294861B6/cs not_active IP Right Cessation
- 1997-06-27 JP JP10516089A patent/JPH11500865A/ja active Pending
- 1997-06-27 US US09/068,942 patent/US6043603A/en not_active Expired - Lifetime
- 1997-06-27 CN CN97191151A patent/CN1118856C/zh not_active Expired - Lifetime
- 1997-06-27 WO PCT/DE1997/001355 patent/WO1998014983A1/fr active IP Right Grant
- 1997-06-27 AU AU35374/97A patent/AU729283B2/en not_active Ceased
- 1997-06-27 DE DE59706387T patent/DE59706387D1/de not_active Expired - Lifetime
- 1997-06-27 KR KR10-1998-0704031A patent/KR100371018B1/ko not_active IP Right Cessation
- 1997-06-27 EP EP97931677A patent/EP0888634B1/fr not_active Expired - Lifetime
- 1997-06-27 BR BR9706769A patent/BR9706769A/pt not_active IP Right Cessation
- 1997-06-27 CA CA002238927A patent/CA2238927C/fr not_active Expired - Fee Related
- 1997-08-27 IN IN1580CA1997 patent/IN192589B/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011078152A1 (de) | 2011-06-27 | 2012-12-27 | Narva Lichtquellen Gmbh + Co. Kg | Niederdruckentladungslampe mit in Abschirmung eingebrachtem Getter |
EP2541586A1 (fr) | 2011-06-27 | 2013-01-02 | Narva Lichtquellen GmH + Co. KG | Lampe à décharge basse pression avec dégazeur installé dans l'écran cathodique |
Also Published As
Publication number | Publication date |
---|---|
AU3537497A (en) | 1998-04-24 |
BR9706769A (pt) | 1999-07-20 |
IN192589B (fr) | 2004-05-08 |
KR19990071753A (ko) | 1999-09-27 |
KR100371018B1 (ko) | 2003-06-18 |
MX9804212A (es) | 1998-10-31 |
CZ38998A3 (cs) | 1998-07-15 |
EP0888634A1 (fr) | 1999-01-07 |
HUP9901384A2 (hu) | 1999-08-30 |
SK284606B6 (sk) | 2005-07-01 |
AU729283B2 (en) | 2001-02-01 |
WO1998014983A1 (fr) | 1998-04-09 |
CA2238927C (fr) | 2004-09-14 |
CZ294861B6 (cs) | 2005-04-13 |
US6043603A (en) | 2000-03-28 |
CN1118856C (zh) | 2003-08-20 |
JPH11500865A (ja) | 1999-01-19 |
CN1199501A (zh) | 1998-11-18 |
SK18198A3 (en) | 1998-10-07 |
CA2238927A1 (fr) | 1998-04-09 |
HUP9901384A3 (en) | 2000-09-28 |
DE29616879U1 (de) | 1998-01-29 |
DE59706387D1 (de) | 2002-03-21 |
HU220820B1 (hu) | 2002-05-28 |
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