EP0714112B1 - Lampe à décharge à culot unique - Google Patents

Lampe à décharge à culot unique Download PDF

Info

Publication number
EP0714112B1
EP0714112B1 EP19950308008 EP95308008A EP0714112B1 EP 0714112 B1 EP0714112 B1 EP 0714112B1 EP 19950308008 EP19950308008 EP 19950308008 EP 95308008 A EP95308008 A EP 95308008A EP 0714112 B1 EP0714112 B1 EP 0714112B1
Authority
EP
European Patent Office
Prior art keywords
tube
legs
bonding material
lamp according
support member
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
Application number
EP19950308008
Other languages
German (de)
English (en)
Other versions
EP0714112A3 (fr
EP0714112A2 (fr
Inventor
Istvan Cserteg
Jozsef Tokes
Istvan Wursching
Jozsef Fulop
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.)
Tungsram Rt
Original Assignee
Tungsram Rt
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
Application filed by Tungsram Rt filed Critical Tungsram Rt
Publication of EP0714112A2 publication Critical patent/EP0714112A2/fr
Publication of EP0714112A3 publication Critical patent/EP0714112A3/fr
Application granted granted Critical
Publication of EP0714112B1 publication Critical patent/EP0714112B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H01J61/30—Vessels; Containers
    • H01J61/32—Special longitudinal shape, e.g. for advertising purposes
    • H01J61/327—"Compact"-lamps, i.e. lamps having a folded discharge path
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
    • H01J5/54—Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base
    • H01J5/58—Means for fastening the separate part to the vessel, e.g. by cement

Definitions

  • the present invention relates to a discharge lamp.
  • Single-ended discharge lamps primarily compact fluorescent lamps, are commercially available which have a discharge tube comprising four or six glass legs.
  • the ends of the legs of the discharge tube are fixed inside a tube support part of a housing with a thermosetting cement.
  • the cement is placed between the legs of the tube and the outer rim of the tube supporting part.
  • the cement is set by heating it and keeping it at a given temperature for a certain time. During this time the cement swells and sets and bonds to the glass tube legs and to the outer rim of the tube supporting part.
  • the tube legs are fixed in the tube supporting part.
  • a single ended discharge lamp comprising a discharge tube having a plurality of glass legs, the ends of which are held in a tube support member by bonding material which bonds the said ends to the support member, characterised in that the bonding material is arranged substantially symmetrically with respect to each of the said ends.
  • the invention is based on the recognition that mechanical forces are exerted to the glass by the bonding material which further increases the stresses generated in the glass in earlier stages of manufacturing.
  • the stresses produced in this way are reduced, in accordance with the invention, by fixing the ends of tube glass legs of the discharge tube inside the tube support member with bonding material applied not only to the outer portion of the support member surrounding the tube ends but also to the inner portion of the discharge tube bordered by the tube legs.
  • a single-ended discharge lamp having a discharge tube comprising at least two tube glass legs, and a housing for mechanical and electrical connection to a lampholder, which housing comprises a tube supporting part, a connection part and a lamp cap, holes in the tube supporting part through which the legs of the discharge tube extend with the ends of the legs of the discharge tube inside the housing fixed with a bonding material applied to the outside portion of the tube supporting part which portion surrounds the discharge tube and, furthermore, the ends of the legs of the discharge tube are fixed to the tube supporting part with bonding material also applied to the inside portion of the discharge tube bordered by the tube legs.
  • a rib on the tube supporting part, the ends of the legs being between the rib and the rim.
  • the rib extends towards the inside of the housing and supports the bonding material. Thereby, both the rib and the outer rim of the tube supporting part support the bonding material and ensure that the force generated by the bonding material is taken up.
  • the bonding material may be a thermosetting cement which swells when setting.
  • the glass tube legs are not exposed to asymmetrical load, so that they are more evenly mechanically stressed.
  • the solution according to the invention provides a bond between the tube legs and the housing which withstands higher mechanical loads.
  • the invention is particularly advantageous when the discharge tube has six, eight or more tube legs.
  • the discharge lamp according to Figures 1 and 2 is an OCT type compact fluorescent lamp having a discharge tube 2 having eight glass legs 3a to 3h and a ballast housing 4.
  • Discharge tube 2 contains electrodes (not shown) and a gas and metal vapor fill as known in the art.
  • the eight tube legs 3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h have an outside diameter of about 12mm.
  • the legs are joined one to another to form a continuous discharge space.
  • Housing 4 comprises a tube supporting portion 5, a housing portion 6 and a lamp cap 7, e.g. an Edison screw cap.
  • the supporting part 5 has circular openings, the centres of which are on a circle of 37 mm diameter.
  • the openings accept the tube legs 3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h of the discharge tube 2.
  • tube supporting part 5 there is an integral, radially inner rib 10 which projects towards the inside of housing 4.
  • the rib 10 is cylindrical and has a thickness of 1 mm, a height of 6.5 mm, and an inside diameter of 20 mm.
  • the rib 10 is concentric with the outer circular rim 8 of the supporting part 5.
  • the rim 8 has a wall thickness of 2 mm and an outside diameter of 53.5 mm.
  • Tube supporting part 5 and housing portion 6 are of plastic material, e.g. polybutylene terephthalate, and are fixed to each other by snapping then together, or by adhesive.
  • Lamp cap 7 is fixed to housing portion 6.
  • An electronic circuit or ballast for operating the discharge tube 2 is housed in the housing part 6. The ballast is connected with the electrodes of discharge tube 2 and with the contacts of the lamp cap 7.
  • the ends of the tube legs 3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h of the discharge tube 2 are fixed inside the supporting part 5 with a bonding material 9 (denoted by cross-hatch in the Figures).
  • the material 9 is applied to two areas within the supporting part 5:-
  • Bonding material 9 is a thermosetting cement which, prior to application, is composed of natural and artificial resins and a solvent. After application, the cement is heated for a few minutes at temperatures between 100 and 180°C to set it to the shape of the ends of tube legs. It is provided on two sides of the pinched portions of the ends of tube legs. Having set, bonding material 9 has a depth, relative to the surface of supporting part 5, of 7 to 8 mm in the radially inner area and 8 to 9 mm in the radially outer area.
  • the discharge lamp described in the example is, on average, able to withstand without damage a torsion moment of 5 Nm between the tube supporting part 5 and the discharge tube 2.
  • An OCT discharge lamp of the same size in which the bonding material 9 is applied only to the radially outer area 11 can withstand a torsion moment of approx. 2.5 Nm.

Landscapes

  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Claims (8)

  1. Lampe à décharge à un seul culot, comprenant un tube de décharge (2) avec une pluralité de branches en verre (3a, .., 3h) dont les extrémités sont maintenues dans un élément (5) de support de tube par un matériau de liaison (9) qui lie lesdites extrémités audit élément de support, caractérisée en ce que le matériau de liaison (9) est disposé de manière sensiblement symétrique par rapport à chacune desdites extrémités.
  2. Lampe selon la revendication 1, dans laquelle l'élément de support (5) comporte un rebord extérieur (8) qui entoure lesdites extrémités des branches, une première partie du matériau de liaison remplit une région extérieure (11) délimitée par le rebord extérieur et les extrémités des branches, et une deuxième partie du matériau de liaison remplit une région intérieure (12) délimitée par les extrémités des branches.
  3. Lampe selon la revendication 2, dans laquelle la première partie du matériau de liaison située dans la région extérieure est espacée de la deuxième partie du matériau de liaison située dans la région intérieure.
  4. Lampe selon la revendication 2 ou 3, dans laquelle l'élément de support comporte une nervure intérieure (10), lesdites extrémités des branches étant placées entre ladite nervure (1()) et ledit rebord (8), la région intérieure (12) remplie par ladite deuxième partie de matériau étant délimitée par la nervure et les extrémités des branches.
  5. Lampe selon la revendication 2, 3 ou 4, dans laquelle l'élément (5) de support de tube et le rebord (8) sont circulaires, lesdites extrémités sont disposées sur un cercle, la région extérieure est située radialement à l'extérieur de ce cercle et la région intérieure (12) est située radialement à l'intérieur de ce cercle.
  6. Lampe selon la revendication 5 quand elle dépend de la revendication 4, dans laquelle la nervure intérieure (10) est un cylindre circulaire, concentrique audit cercle.
  7. Lampe selon l'une quelconque des précédentes revendications, dans laquelle le matériau de liaison (9) est un ciment thermodurcissable.
  8. Lampe selon l'une quelconque des précédentes revendications, comprenant 4, 6 ou 8 branches de tube.
EP19950308008 1994-11-23 1995-11-09 Lampe à décharge à culot unique Expired - Lifetime EP0714112B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU9403360 1994-11-23
HU9403360A HU214797B (hu) 1994-11-23 1994-11-23 Egyoldalon fejelt kisülőlámpa

Publications (3)

Publication Number Publication Date
EP0714112A2 EP0714112A2 (fr) 1996-05-29
EP0714112A3 EP0714112A3 (fr) 1996-09-04
EP0714112B1 true EP0714112B1 (fr) 1998-06-24

Family

ID=10985786

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950308008 Expired - Lifetime EP0714112B1 (fr) 1994-11-23 1995-11-09 Lampe à décharge à culot unique

Country Status (5)

Country Link
EP (1) EP0714112B1 (fr)
JP (1) JPH08335452A (fr)
CN (1) CN1084926C (fr)
DE (1) DE69503108T2 (fr)
HU (1) HU214797B (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59143256A (ja) * 1983-02-03 1984-08-16 Mitsubishi Electric Corp ランプ
JPS59143255A (ja) * 1983-02-03 1984-08-16 Mitsubishi Electric Corp ランプ
DE3307763A1 (de) * 1983-03-04 1984-09-06 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Einseitig gesockelte niederdruckentladungslampe

Also Published As

Publication number Publication date
HU9403360D0 (en) 1995-02-28
HUT73090A (en) 1996-06-28
HU214797B (hu) 1998-05-28
DE69503108D1 (de) 1998-07-30
DE69503108T2 (de) 1999-01-28
CN1130798A (zh) 1996-09-11
JPH08335452A (ja) 1996-12-17
EP0714112A3 (fr) 1996-09-04
EP0714112A2 (fr) 1996-05-29
CN1084926C (zh) 2002-05-15

Similar Documents

Publication Publication Date Title
EP2156463B1 (fr) Lampe fluorescente compacte à enveloppe extérieure et procédé de sa fabrication
US6437502B1 (en) Selfballasted fluorescent lamp having specified tube geometry, luminous flux, lamp efficiency and power requirements
EP1134781B1 (fr) Lampe à décharge à haute tension
JP2005174936A (ja) ランプ管を固定するための保持装置および片口金形ランプ
EP1916699B1 (fr) Lampe fluorescente compacte et son procédé de fabrication
JPH0434259B2 (fr)
KR20040062889A (ko) 방전 램프 및 그 제조 방법과, 고정 장치
US5751105A (en) Assembly arrangement for a compact fluorescent lamp
EP0714112B1 (fr) Lampe à décharge à culot unique
US4318024A (en) Flash tube
US5001387A (en) Electric lamp and lamp cap
EP1596420B1 (fr) Lampe à décharge à barrière diélectrique
EP0704101B1 (fr) Lampe a decharge sans electrode
JPH10199492A (ja) ランプアイレット、ランプおよびランプカプセルを連結する方法
US5345142A (en) Single-ended low-pressure discharge lamp
KR200269657Y1 (ko) 전구식 형광 램프의 방전관 변형 방지구조
JPS62229707A (ja) 口金付蛍光灯装置
JPH11204080A (ja) 平板形蛍光ランプ及びその製造方法
JP2011134711A (ja) 高圧放電ランプ
EP1367634A3 (fr) Lampe à décharge à haute pression et son procédé de fabrication
JP2010507216A (ja) 反転可能なランプ口金
JPH03190035A (ja) けい光ランプ装置
JP2005158334A (ja) 電球形蛍光ランプおよび照明器具
JPH0917390A (ja) 可変色放電灯
JPS6253883B2 (fr)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19970304

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19970915

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

ET Fr: translation filed
REF Corresponds to:

Ref document number: 69503108

Country of ref document: DE

Date of ref document: 19980730

ITF It: translation for a ep patent filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20011018

Year of fee payment: 7

Ref country code: FR

Payment date: 20011018

Year of fee payment: 7

Ref country code: DE

Payment date: 20011018

Year of fee payment: 7

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021109

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030603

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030731

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051109