EP0143419B1 - Lampe à décharge à basse pression compacte - Google Patents

Lampe à décharge à basse pression compacte Download PDF

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Publication number
EP0143419B1
EP0143419B1 EP84113977A EP84113977A EP0143419B1 EP 0143419 B1 EP0143419 B1 EP 0143419B1 EP 84113977 A EP84113977 A EP 84113977A EP 84113977 A EP84113977 A EP 84113977A EP 0143419 B1 EP0143419 B1 EP 0143419B1
Authority
EP
European Patent Office
Prior art keywords
tube sections
longitudinal tube
discharge vessel
sections
subsidiary components
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
Application number
EP84113977A
Other languages
German (de)
English (en)
Other versions
EP0143419A3 (en
EP0143419A2 (fr
Inventor
Lutz Klein
Ernst Panofski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Application filed by Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP0143419A2 publication Critical patent/EP0143419A2/fr
Publication of EP0143419A3 publication Critical patent/EP0143419A3/de
Application granted granted Critical
Publication of EP0143419B1 publication Critical patent/EP0143419B1/fr
Expired legal-status Critical Current

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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
    • H01J61/32—Special longitudinal shape, e.g. for advertising purposes
    • H01J61/327—"Compact"-lamps, i.e. lamps having a folded discharge path

Definitions

  • the invention relates to a compact low-pressure discharge lamp according to the preamble of claim 1.
  • the sealed ends of the discharge vessel can be provided with a base attached on one side, which enables the lamp to be used in a suitable luminaire.
  • Low-pressure mercury vapor discharge lamps are known from DE-A-3 011 382 and US-A-3 501 662, in which a plurality of straight tubular parts arranged parallel to one another are each connected to a discharge bulb by coupling connections acting transversely to these parts.
  • the coupling connections run at a certain distance from the respective ends of the tubular parts, so as to create the cold spots necessary for adjusting the mercury vapor pressure (DE-A-3 011 382).
  • a tortuous discharge vessel can be produced by lining up the tube parts and connecting them by means of the coupling connections.
  • a large number of coupling connections (exactly one less than straight pipe parts) must be fused with the pipe parts to create them.
  • the individual straight pipe parts When merging, the individual straight pipe parts must be aligned very precisely in order to be able to have the necessary dimensional accuracy for the subsequent plinth - quite apart from the aesthetic impression.
  • the cold spots on the tube ends when the lamp is on result in dark areas that are annoying.
  • the same drawbacks also exist in the compact low-pressure discharge lamp listed in Patent Abstracts of Japan, Vol. 7, No. 222 (E-201) (1367) of October 4, 1983.
  • the discharge vessel here consists of four parallel and airtight sealed glass tubes, which are connected by three thinner tube parts transversely to these glass tubes near their sealed ends to form a coherent vessel.
  • DE-A-3 044 058 proposes a winding discharge vessel which is created by repeated U-shaped bending with a large radius. Due to the wide arches, it is possible to carry out a coating with fluorescent material before the bending process. The shaping of such a pre-sludged vessel, however, requires a special bending technique and is very difficult since the phosphor coating must not subsequently have any cracks or cracks.
  • EP-A3-0 061 758 contains a mercury vapor low-pressure discharge lamp with a one-piece or multiple narrowly curved discharge vessel, the diameter of the discharge vessel being larger in the tube bends than in the middle of the straight tube parts.
  • Such a design creates the necessary cold spots for setting the optimal mercury vapor pressure without creating dark areas.
  • the uniform coating with phosphor can only take place after the bending process. This presents practically no difficulties in the case of a single-arc discharge vessel, but is extremely complicated and expensive in the case of a multiple-arc discharge vessel.
  • the aim of the invention is to provide a compact low-pressure discharge lamp, the winding discharge vessel of which can be created by assembling individual parts that are easy to manufacture.
  • the manufacturing and coating process should be as simple and inexpensive as possible, and at the same time the discharge vessel should be dimensionally stable.
  • the construction of the discharge vessel from parts which have already been bent and coated beforehand substantially simplifies the manufacturing process.
  • the number of transverse fusions is reduced to less than half compared to a method of production from straight tubes - as listed in DE-A-3 011 382.
  • the base is simplified due to the greater dimensional stability in the manufacture of the discharge vessel.
  • the U-shaped sections have a larger diameter in the pipe bends due to the transverse pipe sections running essentially perpendicular to the longitudinal pipe sections, in order to create "cold spots". Since no further "cold spots" are required in the discharge vessel, it is possible to place the transverse fusions very close to the sealed ends of the longitudinal tube sections, so that these fusions can possibly be covered by a base covering.
  • the manufacturing process can be further simplified by sealing the longitudinal tube sections of each section instead of sealing them by means of a pinch seal.
  • the discharge vessel consists of two sections which are connected with a cross fusion.
  • the longitudinal pipe sections of the Both sections lie in planes running parallel to each other, the surface enveloping the longitudinal tube sections forming a cylinder with an essentially square cross section.
  • this lamp has extremely compact dimensions.
  • the discharge vessel from more than two sections, the longitudinal tube sections of the different sections lying in planes that run parallel to one another.
  • the sections do not have to form a common escape, but can also be arranged offset to one another.
  • the discharge vessel is composed of a plurality of sections, the longitudinal tube sections of all sections lying in one plane. In this way, a flat compact lamp is created.
  • discharge vessel shapes can be obtained by arranging the sections in a ring.
  • the sections are aligned so that the surface enveloping the longitudinal tube sections forms a cylinder with a polygonal cross section.
  • the discharge vessel 1 is essentially composed of the two sections 2, 3, which consist of a U-shaped glass tube of 12 mm outer diameter and each have two parallel tube sections of 105 mm in length that are 3 mm apart. The corners of the U -shaped arches of the sections 2, 3 are blown out, so that the cross tube sections 4, 5 are substantially perpendicular to the longitudinal tube sections. At the ends, the sections 2, 3 are sealed by crushing 6, 7, 8, 9, wherein a crushing 7, 9 of each section 2, 3 carries an electrode holder 10, 11.
  • Both sections 2, 3 are arranged one behind the other so that the two longitudinal tube sections of the different sections 2, 3 lie in mutually parallel planes and the bruises 7, 9 with the electrode holders 10, 11 are on the same side.
  • the two sections 2, 3 are connected to one another by means of a transverse fusion 13 forming a passage 12 near the two bruises 6, 8 without electrode holders, in such a way that a simply connected discharge path is formed.
  • the compact low-pressure discharge lamp can be provided with a screw or a snap base, the raised edge of which simultaneously covers the transverse fusion 13.
  • the lamp listed above When operated on a series choke with a cos ⁇ of 0.34, the lamp listed above generates a luminous flux of 850 Im at a lamp voltage of 97 V, a lamp current of 150 mA and a power consumption of 11.5 W.
  • the three sections 14, 15, 16 of the discharge vessel 17 are also arranged so that the two longitudinal tube sections of the different sections 14, 15, 16 lie in parallel planes.
  • the sections 14, 15, 16 do not form a uniform escape line here, but are laterally offset from one another and connected by transverse fusions 18, 19 to form a uniform discharge path.
  • FIG. 5 shows a further embodiment of the lamp according to the invention.
  • the discharge vessel 20 also consists of three sections 21, 22, 23, which, however, are arranged next to one another here, the longitudinal tube sections of all sections 21, 22, 23 lying in one plane.
  • the sections 21, 22, 23 are connected by transverse fuses 24, 25, so that a simply connected, flat discharge path is formed.
  • FIG. 6 shows a discharge vessel 26 for a compact one Low-pressure discharge lamp is shown, in which the sections 27, 28, 29 are arranged so that the planes in which the longitudinal tube sections of each section 27, 28, 29 lie form an equilateral triangle on average.
  • the sections 27, 28, 29 are also connected here by transverse fusions 30, 31 to form a simply connected discharge vessel.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Claims (5)

1. Lampe compacte à décharge à basse pression comportant une enceinte à décharge tubulaire en verre (1), de forme contournée, formée par la réunion de plusieurs éléments, deux électrodes scellées par fusion, de façon étanche, sur les extrémités de l'enceinte à décharge (1), un remplissage formé de mercure et au moins un gaz rare, ainsi qu'un revêtement formé d'une substance luminescente et déposé sur la paroi inférieure de l'enceinte à décharge (1), et dans laquelle chaque élément (2, 3) est constitué par un tube replié en forme de U comportant deux sections tubulaires longitudinales et une section tubulaire transversale (4, 5) sensiblement perpendiculaire aux sections longitudinales, les extrémités libres des sections tubulaires longitudinales sont fermées de façon étanche et les différents éléments sont disposés de telle sorte que les sections tubulaires longitudinales sont parallèles entre elles et les extrémités, fermées de façon étanche, des tubes sont toutes tournées du même côté, et des éléments voisins sont reliés entre eux, respectivement par un passage (12) à proximité des extrémités de deux sections tubulaires longitudinales, de manière à former un trajet de décharge d'un seul tenant, caractérisée par le fait que le passage (12), qui relie respectivement des éléments voisins (2, 3), est formé par une jonction transversale (13) formée par fusion, et que les extrémités libres des sections tubulaires longitudinales de chaque élément (2, 3) sont fermées de façon étanche par un pincement (6, 7,8, 9).
2. Lampe compacte à décharge à basse pression suivant la revendication 1, caractérisée par le fait que l'enceinte à décharge (20) est constituée de plusieurs éléments (21, 22, 23), les sections tubulaires longitudinales de tous les éléments (21, 22, 23) étant situées dans un plan.
3. Lampe compacte à décharge à basse pression suivant la revendication 1, caractérisée par le fait que l'enceinte à décharge (1; 17) est constituée de plusieurs éléments (2, 3; 14, 15, 16), les deux sections tubulaires longitudinales des différents éléments (2, 3; 14, 15, 16) étant situées dans des plans respectivement parallèles entre eux.
4. Lampe compacte à décharge à basse pression suivant les revendications 1 à 3, caractérisée par le fait que l'enceinte à décharge (1) est constituée de deux éléments (2, 3), qui sont reliés à une jonction transversale (13) formée par fusion, la surface entourant les sections tubulaires longitudinales formant un cylindre possédant une section transversale sensiblement carrée.
5. Lampe compacte à décharge à basse pression suivant la revendication 1, caractérisée par le fait que l'enceinte à décharge (26) est constituée par plusieurs éléments (27, 28), qui sont disposés selon une disposition en anneau, la surface entourant les sections tubulaires longitudinales formant un cylindre possédant une section transversale polygonale.
EP84113977A 1983-11-25 1984-11-19 Lampe à décharge à basse pression compacte Expired EP0143419B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19838333920U DE8333920U1 (de) 1983-11-25 1983-11-25 Kompakte niederdruckentladungslampe
DE8333920U 1983-11-25

Publications (3)

Publication Number Publication Date
EP0143419A2 EP0143419A2 (fr) 1985-06-05
EP0143419A3 EP0143419A3 (en) 1986-05-07
EP0143419B1 true EP0143419B1 (fr) 1989-06-21

Family

ID=6759263

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84113977A Expired EP0143419B1 (fr) 1983-11-25 1984-11-19 Lampe à décharge à basse pression compacte

Country Status (4)

Country Link
EP (1) EP0143419B1 (fr)
JP (3) JPS60124345A (fr)
DE (2) DE8333920U1 (fr)
HK (1) HK91693A (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3741566C2 (de) * 1987-12-08 1996-07-18 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Kompakte Niederdruckentladungslampe
NL8501340A (nl) * 1985-05-10 1986-12-01 Philips Nv Lagedrukkwikdampontladingslamp.
FR2590725B1 (fr) * 1985-06-27 1988-06-17 Elf Aquitaine Lampe a tube fluorescent
JPS6276149A (ja) * 1985-09-28 1987-04-08 Toshiba Corp けい光ランプ装置
JPH07114111B2 (ja) * 1985-10-25 1995-12-06 東芝ライテック株式会社 低圧金属蒸気放電灯の製造方法
US4794301A (en) * 1986-08-19 1988-12-27 Kabushiki Kaisha Toshiba Fluorescent lamp having a convoluted discharge passage and fluorescent lamp apparatus incorporating the same
SE457760B (sv) * 1987-03-23 1989-01-23 Lumalampan Ab Foerfarande foer framstaellning av kompaktlysroer
JPH083997B2 (ja) * 1988-12-12 1996-01-17 東芝ライテック株式会社 低圧水銀蒸気放電灯
KR970046574U (ko) * 1995-12-21 1997-07-31 컴팩트 형광 램프
DE19613358C1 (de) * 1996-04-03 1997-10-09 Heraeus Noblelight Gmbh Optischer Strahler

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL185479C (nl) * 1979-04-03 1990-04-17 Philips Nv Lagedrukgasontladingslamp.
DE3112878A1 (de) * 1981-03-31 1982-10-14 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Quecksilberdampf-niederdruckentladungslampe und verfahren zur herstellung
JPS58112238A (ja) * 1981-12-25 1983-07-04 Toshiba Corp けい光ランプ
JPS58112237A (ja) * 1981-12-25 1983-07-04 Toshiba Corp けい光ランプ

Also Published As

Publication number Publication date
JPS60124345A (ja) 1985-07-03
JPH0970U (ja) 1997-01-28
HK91693A (en) 1993-09-10
DE8333920U1 (de) 1985-05-02
DE3478777D1 (en) 1989-07-27
JP2586587Y2 (ja) 1998-12-09
EP0143419A3 (en) 1986-05-07
EP0143419A2 (fr) 1985-06-05
JPH0623155U (ja) 1994-03-25

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