US3349277A - Electric lamp with external current supply contact - Google Patents

Electric lamp with external current supply contact Download PDF

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Publication number
US3349277A
US3349277A US408105A US40810564A US3349277A US 3349277 A US3349277 A US 3349277A US 408105 A US408105 A US 408105A US 40810564 A US40810564 A US 40810564A US 3349277 A US3349277 A US 3349277A
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US
United States
Prior art keywords
stem
lamp
conductors
sealed
external
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
US408105A
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English (en)
Inventor
Hoeve Williem Frederick Ter
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.)
US Philips Corp
North American Philips Co Inc
Original Assignee
US Philips Corp
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 US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3349277A publication Critical patent/US3349277A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
    • H01J61/366—Seals for leading-in conductors

Definitions

  • Netherlands assignor to North American Philips Company, Inc., New York, N.Y., a corporation of Delaware.
  • the invention relates to an electric lamp or discharge tube, the vessel of which is formed by a bulb and one or more stems provided with a flange-shaped part, sealed to the bulb of the lamp or tube, the current supply contacts being formed by those parts of the current supply conductors sealed in one or more stems which are located outside the vessel of the lamp or tube.
  • a lamp or tube known as capless lamps or tubes the emerging current conductors themselves serve as current supply contacts.
  • stem is to denote, in general, a closing member provided with a flange and supporting the light emitting part and provided frequently with a tube.
  • the flange may have a flat or conical shape.
  • the ends of the more or less flexible current conductors emerging from the vessel must be arranged in position relatively to the vessel by a separate operation in order to secure them to the lamp or tube vessel by separate means. In this manner it is ensured that the current conductors remain at their predetermined places. This is important because with such a lamp or tube the contact members must be capable of establishing a rigid contact with the conductors serving as external current supply contacts.
  • the invention has for its object to provide a lamp or tube structure in which the subsequent connection of the emerging, more or less flexible current supply conductors with the aid of separate fastening means can be completely dispensed with.
  • the lamp or tube according to the invention is characterized in that at least part of the current conductors serving as external supply contacts is sealed in the sealing zone between the stem concerned and the bulb of the lamp or tube. Before the stem is sealed to the bulb, the ends concerned of the supply conductors are held in the sealing zone between the stem and the bulb and subsequently, the flange-shaped part of the stem is sealed to the bulb. In this manner the ends of the supply conductors can be rigidly secured to the vessel of the lamp or tube.
  • the current conductors extend along the side of the flange-shaped .part remote from the interior of the vessel. Consequently, the external current conductors of such a lamp-or tube will be taut to'a greater or lesser extent between the place where the conductors emerge from the vessel and the zone where the ends of the conductors are sealed in the sealing zone. Thus not only the ends but also the more or less taut parts of Patented Oct. 24, 1967 the conductors stay at their predetermined places when a rigid electric contact is established.
  • the wall of the vessel may serve as a support for the conductors when the contact is established.
  • the vessel is provided near the sealing zone with interrupted or non-interrupted local variations of the profile.
  • Said variations may be provided in the wall of the bulb, for example in the case of flat, flange-shaped stem portions of stem supports.
  • the profile variations may, however, also be provided at the area of the flangeshaped portion, for example, if the latter is funnel-shaped, for example in the case of stem tubes.
  • the two current conductors emerging from the stem can be arranged at their ends in the sealing zone.
  • one of the current conductors is arranged in the sealing zone of the vessel, Whereas the other conductor emerges through the exhaust tube associated with the stem.
  • the invention also applies to lamps or tubes comprising the conventional cap or base.
  • the vessel is provided with a cap or base or the like fastened by a snap joint, the side facing the vessel being provided with contact members co-operating with current conductors on the outer side of the vessel, serving as external current supply conductors.
  • Such lamps or tubes comprising a cap or base or the like an important advantage .is obtained as compared with the conventional capped lamps or tubes, in that a few conventional operations may be omitted. These operations are, for example, the introduction of a current conductor emerging from the vessel through a narrow opening of a cap or fitting and the cutting 011" of the conductor and the fastening of the end of a conductor to the cap or base. Owing to the snap joint a further conventional operation, the socalled capping may be dispensed with.
  • FIG. 1 shows a lamp in which the ends of the current conductors are arranged in sealing zones in accordance with the invention.
  • FIG. 2 illustrates the possible arrangement of the ends of the current conductors emerging from a lamp vessel in the sealing zone.
  • FIG. 3 illustrates the arrangement of current conductors emerging from the stem system in the sealing zone between the stem system and the wall of a tube.
  • FIGS. 4, 5 and 6 show a lamp with a cap;
  • FIG. 4 is a sectional view taken on the line IVIV of FIG. 5 and
  • FIG. 5 is a sectional view taken on the line VV in FIG. 4.
  • FIG. 6 is a plan view of the associated cap, which is shown in FIG. 4 separately from the lamp.
  • FIG. 7 shows a tube provided with a cap.
  • the lamp shown partly in FIG. 1 comprises stems 1 and 3, each having a funnel-shaped portion 5 and being sealed with their widest circumference to a glass bulb 7. A number of current conductors 9 emerge from each stem.
  • the free ends of the conductors are arranged at 11 in the sealing zone between a stem (1 or 3) and the bulb 7, so that the portions of O the current conductors located between the place of emergence 13 and the zone 11 can establish an external electric contact without the conductors being shifted in place. Consequently, some of the conductors may serve as external current supply contacts.
  • FIG. 2 The arrangement of the ends of the more or less straight conductors 16 in the sealing zone 11 is illustrated in FIG. 2.
  • the conductors 16 emerging from the stem 1 are stretched around the widest edge of a funnelshaped portion 5.
  • the glass stem 1 is arranged with its flange-shaped portion inside the bulb 7.
  • the ends of the conductors 9 are fastened simultaneously with the seal between the stem 1 and the bulb 7. This fastening does therefore not require a separate operation.
  • FIG. 3 shows the situation for sealing a stem formed by a support 21 to a bulb 23.
  • Conductors 25 and 26 emerge from the support 21. Before the sealing operation, said conductors are bent around the edge of the flat flange (at 27). Then the bulb 23 is disposed on the edge of the support 21. By means of flames 28 the sealing operation is then performed. Also in this case the ends of the conductors 26 are held in the sealing zone.
  • the lamp shown in FIG. 1 can be mounted in a holder 17 by snapping the vessel onto the resilient contact tags of said holder.
  • the bent-over parts 19 of the tags 15 will urge the conductors concerned into the profile variations at 12, so that a rigid contact is established with the conductors 9. Consequently, in the structure shown in FIG. 1, the two functions i.e. fastening of the lamp vessel to the holder of a lighting fitting and the establishment of an electric contact can be fulfilled by the same resilient tags.
  • the invention is also suitable for lamps and tubes having a cap, base or the like for mounting in conventional lighting fittings, holders and the like.
  • the cap, base or the like must be provided with contact members capable of establishing an electric contact with the current conductors serving as external current supply contacts for the lamp or tube vessel.
  • the cap, base or the like must be connectable to the vessel.
  • Such a cap, base or the like slightly resembles the holder 17 of FIG. 7, but it must also be provided with for example external contact pins and external screw thread or the like. With the lamp shown in FIGS. 4 and 5 this is shown for the cap 32 of electrically insulating material, provided with contact pins 33.
  • the contact pins are electrically coupled with resilient tags 35.
  • the cap 32 is furthermore connected to a bracket provided with two further resilient tags 37.
  • the wall of the vessel 31 has two grooves 41.
  • the interrupted or noninterrupted local profile variations may, of course, also be provided in the wall of the bulb of the lamp or tube. This is shown for the gas discharge lamp illustrated partly in FIG. 7.
  • the upright side wall of the lamp has a fluted portion 51, into which can snap resilient tags 55, fastened to the cap 53, when the cap 53 is disposed on the lamp. The electric contact is thus again established by means of only one set of resilient tags.
  • each current conductor emerging from a stem is guided along the flangeshaped portion of the stem and that the end is arranged in the sealing zone.
  • the invention also applies to the case in which at least one of the conductors (58) emerges through a stem (59) of the support 3, which is shown by way of example in FIG. 1.
  • An electric lamp comprising an envelope, a stern having a flange portion sealed to said envelope, and a current conductor sealed in said stem and having a portion external to and contiguous with said stern serving as an external current contact, said external portion of said current conductor being sealed only at the end thereof between the flange and the bulb.
  • An electric lamp comprising an envelope, a stem having a flange portion sealed to said envelope, and a current conductor sealed in said stem and having a portion extending contiguously along an external surface of the flange serving as an external current contact, only the end of said conductor being sealed between the flange and the envelope.
  • An electric lamp comprising an envelope, a stem having a flange portion sealed to said envelope, and a current conductor sealed in said stem and having a portion extending contiguously along an external surface of the flange serving as an external current contact, only the end of said conductor being sealed between the flange and the envelope, the envelope having an interrupted profile variation in the vicinity of the seal between the flange and the envelope.
  • An electric lamp comprising an envelope, a stem having a flange portion sealed to said envelope, and a current conductor sealed in said stem and having a portion extending contiguously along an external surface of the flange serving as an external current contact, only the end of said conductor being sealed between the flange and the envelope, the envelope having an uninterrupted profile variation in the vicinity of the seal between the flange and the envelope.
  • An electric lamp comprising an envelope, a stem having a flange portion sealed to said envelope, said stem having an exhaust tube, a first conductor extending through said exhaust tube, and a second current conductor sealed in said stem and having a portion external to said envelope and contiguous with said stem serving as an external current contact, only the end of said external portion of said second conductor being sealed between said envelope and said stem.
  • An electric lamp comprising an envelope, a stem having a flange portion sealed to said envelope, a conductor sealed in said stem and having a portion external to and contiguous with said stem the end only of which is sealed between the flange and the envelope, a member fitting over said flange, and a current contact member on the side of said member facing said flange positioned to cooperate with said external conductor to provide an external current supply contact for said lamp.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Packaging Frangible Articles (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
US408105A 1963-11-01 1964-11-02 Electric lamp with external current supply contact Expired - Lifetime US3349277A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL300048 1963-11-01

Publications (1)

Publication Number Publication Date
US3349277A true US3349277A (en) 1967-10-24

Family

ID=19755182

Family Applications (1)

Application Number Title Priority Date Filing Date
US408105A Expired - Lifetime US3349277A (en) 1963-11-01 1964-11-02 Electric lamp with external current supply contact

Country Status (10)

Country Link
US (1) US3349277A (de)
AT (1) AT245112B (de)
BE (1) BE655145A (de)
CH (1) CH424982A (de)
DE (1) DE1280405B (de)
ES (1) ES305463A1 (de)
FR (1) FR1413476A (de)
GB (1) GB1065299A (de)
NL (1) NL300048A (de)
SE (1) SE314134B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441778A (en) * 1965-06-23 1969-04-29 Lampes Elect Fab Reunies Base for electric lamp
US3510718A (en) * 1967-11-06 1970-05-05 Sylvania Electric Prod Incandescent lamp
US3548243A (en) * 1967-06-26 1970-12-15 Dino Magherini Electric light bulb and terminal cap assembly
US4854888A (en) * 1988-05-31 1989-08-08 Gte Products Corporation Lamp base
US4878854A (en) * 1988-05-31 1989-11-07 Gte Products Corporation Lamp base
US20080214023A1 (en) * 2005-05-09 2008-09-04 Stefan Hackenbuchner Lamp Base and High-Pressure Discharge Lamp With Base

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH660090A5 (de) * 1981-05-19 1987-03-13 Sprecher & Schuh Ag Verriegelbarer antrieb fuer einen elektrischen trennschalter.

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL60853C (de) * 1941-11-12
US870341A (en) * 1906-11-21 1907-11-05 Herman Boehm Incandescent lamp.
US1727826A (en) * 1926-04-05 1929-09-10 Harris Mark Filament tube
US1914702A (en) * 1931-03-28 1933-06-20 John P Peth Theftproof lamp
US1946104A (en) * 1928-03-03 1934-02-06 Kanichiro Matsuki Electric lamp
DE734789C (de) * 1938-12-11 1943-04-24 Werner Trietchen Mehrfadengluehlampe
US2359483A (en) * 1942-10-17 1944-10-03 Gen Electric Vitreous electrical device and its fabrication

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB402735A (en) * 1932-03-03 1933-12-07 Philips Nv Improvements in or relating to capless electric incandescent lamps or discharge tubes and holders therefor
GB499120A (en) * 1937-05-22 1939-01-18 British Thomson Houston Co Ltd Improvements in and relating to electric lamps
US2447159A (en) * 1944-06-19 1948-08-17 Gen Electric Lamp terminal structure and method of manufacture
US2692154A (en) * 1950-06-21 1954-10-19 Gen Electric Electric lamp base construction
FR1082321A (fr) * 1952-08-20 1954-12-28 Lampes Sa Perfectionnements à la fabrication des lampes électriques
US2851623A (en) * 1955-04-07 1958-09-09 Frank Friesen Reimer Electric lamps

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US870341A (en) * 1906-11-21 1907-11-05 Herman Boehm Incandescent lamp.
US1727826A (en) * 1926-04-05 1929-09-10 Harris Mark Filament tube
US1946104A (en) * 1928-03-03 1934-02-06 Kanichiro Matsuki Electric lamp
US1914702A (en) * 1931-03-28 1933-06-20 John P Peth Theftproof lamp
DE734789C (de) * 1938-12-11 1943-04-24 Werner Trietchen Mehrfadengluehlampe
NL60853C (de) * 1941-11-12
US2359483A (en) * 1942-10-17 1944-10-03 Gen Electric Vitreous electrical device and its fabrication

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441778A (en) * 1965-06-23 1969-04-29 Lampes Elect Fab Reunies Base for electric lamp
US3548243A (en) * 1967-06-26 1970-12-15 Dino Magherini Electric light bulb and terminal cap assembly
US3510718A (en) * 1967-11-06 1970-05-05 Sylvania Electric Prod Incandescent lamp
US4854888A (en) * 1988-05-31 1989-08-08 Gte Products Corporation Lamp base
US4878854A (en) * 1988-05-31 1989-11-07 Gte Products Corporation Lamp base
US20080214023A1 (en) * 2005-05-09 2008-09-04 Stefan Hackenbuchner Lamp Base and High-Pressure Discharge Lamp With Base
US7625237B2 (en) * 2005-05-09 2009-12-01 Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh Lamp base and high-pressure discharge lamp with base

Also Published As

Publication number Publication date
AT245112B (de) 1966-02-10
BE655145A (de) 1965-04-30
ES305463A1 (es) 1964-12-16
DE1280405B (de) 1968-10-17
CH424982A (de) 1966-11-30
FR1413476A (fr) 1965-10-08
SE314134B (de) 1969-09-01
NL300048A (de) 1900-01-01
GB1065299A (en) 1967-04-12

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