US3753027A - Discharge lamp arrangement - Google Patents

Discharge lamp arrangement Download PDF

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Publication number
US3753027A
US3753027A US00117508A US3753027DA US3753027A US 3753027 A US3753027 A US 3753027A US 00117508 A US00117508 A US 00117508A US 3753027D A US3753027D A US 3753027DA US 3753027 A US3753027 A US 3753027A
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US
United States
Prior art keywords
lamps
lamp
cross
members
mercury
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
US00117508A
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English (en)
Inventor
D Kolkman
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
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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 US3753027A publication Critical patent/US3753027A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H01J5/52—Means forming part of the tube or lamps for the purpose of providing electrical connection to it directly applied to or forming part of the vessel

Definitions

  • the invention relates to an electric lamp comprising a combination of at least two parallel low-pressure mercury vapour discharge lamps.
  • Low-pressure mercury vapour discharge lamps are substantially always cylinders having a length which is considerably larger than the diameter.
  • the current supply contacts of such lamps are substantially always provided in lamp caps which are present at the ends of the cylinders. Generally the current supply contacts are pin-shaped. The overall length of the lamp is thus extended by the length of the pins.
  • the lamps are usually secured in lamp holders which adjoin the ends of the lamp.
  • a drawback of this known arrangement is that the luminous portion is smaller than the overall length. This drawback becomes particularly manifest when the lamps are arranged in a fitting which is provided with some light transmitting closure or other, for example, a glass plate. In fact, the fitting then does not transmit light throughout but has dark edges at the area of the lamp holders. This drawback is particularly manifest in fittings in which two or more discharge lamps are placed one along the other for producing a luminous plane.
  • a lamp according to the invention comprises a combination of at least two parallel low-pressure mercury vapour discharge lamps and is characterized in that juxtaposed ends of the lamps are rigidly connected together by means of cross-connections and that the cur rent supply contacts for the lamps are present on the sides of the cross-connections.
  • FIG. 1 illustrates on a small scale a plan view of a composition of two lamps
  • FIG. 2 illustrates in a detailed elevational view one end of the composition of lamps
  • FIG. 3 is a cross-sectional view taken on the line III- ---III of FIG. 2;
  • FIG. 4 is a cross-sectional view taken on the line IV-IV of FIG. 2.
  • the low-pressure mercury vapour discharge lamps are denoted by the reference numerals l and 2.
  • the ends of these lamps are provided in two cross bars 3 and 4 by which they are rigidly connected.
  • the reference numerals 5, I and 11 denote pin-shaped contact members which are provided in the sides of the bars 3 and 4, respectively.
  • the reference numeral 6 denotes a starter for the lamps which are provided on the side of bar 4.
  • FIG. 2 is an elevational view of the bar 3 and the lamps secured therein when a cross-section is taken on the line Il--ll of FIG. I.
  • the bar 3 between the lamps has a U-shaped cross-section as is clearly apparent the current supply pins 10 and 11 are secured.
  • the current supply wires 12 and 13 are connected to these pins within the cross-section of the bar.
  • the current supply wires 12 and 13 lead to one of the current lead-through wires of the cathodes of lamp 2 and lamp 1, respectively.
  • the other sides of the cathodes are connected to the current supply wires 14 and 15, respectively. These wires are connected together at 16 within the bar 3.
  • the cathodes are electrically arranged in series through this lead-through connection 16.
  • a starter 6 may be provided between the lamps as is shown with reference to FIG. 1. In a certain series arrangement and connection of the cathodes to the starter, a lamp can be made which has only 4 contact pins.
  • the width of the bar 3 (which is the dimension measured at right angles to the plane containing the axes of the lamps 1 and 2) is considerably smaller than the diameter of the lamps land 2, respectively, it is possible to give the contact pins 10 and 11 a length such that they do not project beyond the contact plane l-l on the outer sides of the lamps l and 2. This is a great advantage when packaging such lamps.
  • FIG. 3 is a cross-sectional view taken on the line III- III of FIG. 2 in which the same reference numerals denote corresponding elements. It is particularly evident from this Figure thatonly a small quantity of opaque material such as material for lamp holders which might produce dark portions or edges in a fitting is present at the ends of the lamps.
  • the lamp consisting of the combination of the lamps l and 2 may be secured in the fitting by means of lamp holders which are provided, for example, on the bottom of the fitting.
  • the lamp is urged into these lamp holders with the pins 5, l0 and 11, which pins thus support and at the same time electrically connect the lamp to the supply source.
  • the invention is not limited to a combination of two low-pressure mercury vapour discharge lamps, but three or more of such lamps may be combined to form an assembly.
  • the invention is significant, for at this short length the known lamp holders produce comparatively large dark ends at the ends.
  • a single composite lamp comprising a combination of at least two individual low-pressure mercury vapor discharge lamps, said mercury lamps being physically arranged parallel to each other, said mercury lamps having ends juxtaposed to each other in opposite pairs, each pair of said ends being rigidly mechanically connected together by a cross-connection member, said composite lamp having fixed current supply contacts being provided on the sides of the crossconnection member, transverse to the longitudinal dimension of the lamps, said mercury lamps being wired to said contacts by flexible wiring extending through the member directly into said lamps.
  • a lamp as claimed in claim 1 wherein one cross connection members between two lamps includes a starter for one or more lamps.
  • a lamp as claimed in claim 1 wherein at least two lamps are electrically arranged in series.

Landscapes

  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
US00117508A 1970-03-20 1971-02-22 Discharge lamp arrangement Expired - Lifetime US3753027A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7003970A NL7003970A (fr) 1970-03-20 1970-03-20

Publications (1)

Publication Number Publication Date
US3753027A true US3753027A (en) 1973-08-14

Family

ID=19809626

Family Applications (1)

Application Number Title Priority Date Filing Date
US00117508A Expired - Lifetime US3753027A (en) 1970-03-20 1971-02-22 Discharge lamp arrangement

Country Status (5)

Country Link
US (1) US3753027A (fr)
BE (1) BE764491A (fr)
DE (1) DE7041702U (fr)
FR (1) FR2084910A5 (fr)
NL (1) NL7003970A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4217630A (en) * 1976-12-28 1980-08-12 Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh Fluorescent lamp base assembly
US5603627A (en) * 1995-08-22 1997-02-18 National Cathode Corp. Cold cathode lamp lampholder
FR2758610A1 (fr) * 1997-01-20 1998-07-24 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Lampe electrique
US5834884A (en) * 1996-12-23 1998-11-10 General Electric Company Systematic configuration of compact fluorescent lamps for operation in a single-type ballast
US6666700B2 (en) 2001-08-23 2003-12-23 E.G.L. Company, Inc. Holder for discharge lamp
US20080198591A1 (en) * 2007-02-20 2008-08-21 Hyun-Jin Kim Fluorescent lamp, backlight assembly having the same and method of assembling the same
US20100296005A1 (en) * 2008-02-19 2010-11-25 Sharp Kabushiki Kaisha Discharge tube, lighting device, display device, and television receiver

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2160786A (en) * 1938-03-17 1939-05-30 Gen Electric Tubular lamp base
US2346522A (en) * 1942-05-12 1944-04-11 Hartford Nat Bank & Trust Co Fluorescent lamp
US2366252A (en) * 1941-10-18 1945-01-02 Gen Electric Circular electric lamp
US3245025A (en) * 1963-11-04 1966-04-05 Goddard Edwin George Socket for lamp holder
US3579174A (en) * 1968-06-24 1971-05-18 Sylvania Electric Prod Lamp-base assembly
US3602755A (en) * 1970-01-21 1971-08-31 Westinghouse Electric Corp U-shaped fluorescent lamp with improved envelope-bracing means

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2160786A (en) * 1938-03-17 1939-05-30 Gen Electric Tubular lamp base
US2366252A (en) * 1941-10-18 1945-01-02 Gen Electric Circular electric lamp
US2346522A (en) * 1942-05-12 1944-04-11 Hartford Nat Bank & Trust Co Fluorescent lamp
US3245025A (en) * 1963-11-04 1966-04-05 Goddard Edwin George Socket for lamp holder
US3579174A (en) * 1968-06-24 1971-05-18 Sylvania Electric Prod Lamp-base assembly
US3602755A (en) * 1970-01-21 1971-08-31 Westinghouse Electric Corp U-shaped fluorescent lamp with improved envelope-bracing means

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4217630A (en) * 1976-12-28 1980-08-12 Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh Fluorescent lamp base assembly
US5603627A (en) * 1995-08-22 1997-02-18 National Cathode Corp. Cold cathode lamp lampholder
US5834884A (en) * 1996-12-23 1998-11-10 General Electric Company Systematic configuration of compact fluorescent lamps for operation in a single-type ballast
FR2758610A1 (fr) * 1997-01-20 1998-07-24 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Lampe electrique
US6666700B2 (en) 2001-08-23 2003-12-23 E.G.L. Company, Inc. Holder for discharge lamp
US20080198591A1 (en) * 2007-02-20 2008-08-21 Hyun-Jin Kim Fluorescent lamp, backlight assembly having the same and method of assembling the same
US7905625B2 (en) * 2007-02-20 2011-03-15 Samsung Electronics Co., Ltd. Fluorescent lamp, backlight assembly having the same and method of assembling the same
US20100296005A1 (en) * 2008-02-19 2010-11-25 Sharp Kabushiki Kaisha Discharge tube, lighting device, display device, and television receiver

Also Published As

Publication number Publication date
DE7041702U (de) 1971-02-18
FR2084910A5 (fr) 1971-12-17
NL7003970A (fr) 1971-09-22
BE764491A (fr) 1971-09-20

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