US2501376A - Electric discharge lamp - Google Patents

Electric discharge lamp Download PDF

Info

Publication number
US2501376A
US2501376A US650067A US65006746A US2501376A US 2501376 A US2501376 A US 2501376A US 650067 A US650067 A US 650067A US 65006746 A US65006746 A US 65006746A US 2501376 A US2501376 A US 2501376A
Authority
US
United States
Prior art keywords
passage
partitions
glass
extremities
disc
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
US650067A
Other languages
English (en)
Inventor
Breadner Robert Leonard
Jenkins Henry Grainger
Simms Charles Henry
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.)
General Electric Co
Original Assignee
General Electric Co
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
Priority claimed from GB2563344A external-priority patent/GB590704A/en
Application filed by General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of US2501376A publication Critical patent/US2501376A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
    • C07D201/02—Preparation of lactams
    • C07D201/12—Preparation of lactams by depolymerising polyamides
    • 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
    • H01J61/305—Flat vessels or containers
    • H01J61/307—Flat vessels or containers with folded elongated discharge path
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/92—Lamps with more than one main discharge path
    • H01J61/94—Paths producing light of different wavelengths, e.g. for simulating daylight

Definitions

  • a discharge lamp of the type specified has a discharge path in the form of a two-start spiral or helix.
  • the electrodes may be' arranged in the extremities of the fore applicable to hot cathode lamps having their envelopes coated internally with fluorescent powder, in which the discharge passes through mercury vapour usually admixed with a few millimetres pressure of a rare gas such as argon.
  • a rare gas such as argon.
  • the invention is concerned with discharge lamps of the type in which compactness is secured by giving the discharge path between two electrodes a spiral orl like shape and in which the discharge path is a channel formed between two vitreous components sealed together, one or both of the components having one or more upstanding ridges which separate adjacent parts of the discharge path from one another.
  • discharge path which are adjacent to one another but preferably they are accommodated in tubulations sealed to the extremities of the discharge path.
  • the electrodes and means for making electrical connection therewith can readily be located clear of the lamp surface through which the greater part of the light emission takes place. Two such two-start spiral dis- They are usually made,
  • charge paths maybe provided with the turns of the spirals interleaved with one another and each discharge path may be provided with a different' gas or vapour lling and/or different fluorescent coatings whereby a desired colour combination can be obtained.
  • Fig. 1 shows somewhat diagrammatically ⁇ one formof discharge passage according to the invention
  • Fig. 2 is a side view in section along the line 2-2 of Fig. 1
  • Fig. 3 is a somewhat diagrammatic plan view of a modification.
  • Figs. 1 and 2 of the drawing one spiral discharge passage runs from I0 to the centre and the other from the centre to I I.
  • 'Ihese passages are bounded by two spiral ridges I2 and I3 interleaved with one another.
  • the ridges I2 and I3 may be lformed by moulding, pressing or by the application of a strip or the like of glass to a flat glass disc I8 and fusing the strip to the disc by heating.
  • the outer ends o f the ridges are turned inwards at I4 and I5 and joined to the adjacent ridge in order to close the passages.
  • the ridges may be provided on both of the components or one component may be as shown in Fig. 1 of the drawing and a plain glass disc I9 (Fig.
  • the second component may constitute the second component.
  • the components are fused together along the crests of the ridges and in'this Way a two-start spiral passage closed excepting for the two ends is provided.
  • tubulations I6 and I1 are preferably sealed through one component I8, electrodes 2D and 2
  • the electrodes and the means azionarei 3 for making electrical connection therewith can be located' outside the greater part of the surface glass disc-shaped walls through which light is emitted.
  • an electrode is required at or near the centre of the lamp or alternatively a tabulation connected with the -centrai region oi.' the lamp must be provided.
  • tubulations I6 and Il may be arranged alongside oi one another, or at diametrically opposite points or in any other convenient position.
  • An envelope constructed in the form above de scribed may be made to provide two independentl discharge paths each having the form of a twostart spiral or helix and the two paths being sealed from one another and provided with a different gas illling or luminescent powder or both and independent pairs of electrodes; this construction involves suitably modifying the shape o! the channels produced in one or both components.
  • a lamp with two discharge paths both contain a illlingl of neon and in one fluorescent zinc silicate may be used as the luminescent powder whilst in the other the luminescent powder may be calcium tungstate as described in British patent specification No. 457,486.
  • the neon with the zinc silicate gives a yellow light and the neon with calcium tungstate a pink light, the mixed light from the combination being a very warm white colour.
  • either of the above discharge paths may be used in combination with a ⁇ discharge path having a mercury vapour illing and using a suitable fluorescent powder such as a mixture oi' zinc beryllium silicate and magnesium tungstate for example.
  • a suitable fluorescent powder such as a mixture oi' zinc beryllium silicate and magnesium tungstate for example.
  • Such a structure is shown in Fig. 3 wherein electrodes 24, 25 are located at the ends of a discharge path 26, while electrodes 21, 28 are located at the ends of another discharge path 29.
  • An electric discharge lamp comprising a glass bulb having a pair of spaced and opposed glass disc-shaped walls separated by a pair 0I transverse parallel interleaved spiraled glass partitions joined to and between said walls and extending from outer peripheral extremities to a point at the center of the disc-shaped walls where their inner extremities terminate in adjacent spaced relationship whereby to jointly -dene a continuous spiral passage bounded by the adjacent convolutions of said partitions and extending from the outer extremity thereof to the inner extremities and thence back to another point at the outer extremity, an ionizable medium in Said passage. and electrodes arranged at the outer ends only of said passage.
  • An electric discharge lamp comprising glass bulb having a pair oispaced and opposed glass disc-shaped walls separated by a pair of transverse parallel interleaved spiraled glass partitions joined to and .between said walls and ex separated by two pairs of transverse parallel interleavedspiraled glass partitions joined to and between said walls and each extending from outer peripheral extremities to a point at thecenter oi the disc-shaped walls where their ⁇ inner extremities terminatein adjacent spaced relationship whereby to jointly deline a continuous'spiral passage bounded by the adjacent convolutions oi said partitions and extending irom the outer extremity thereof tothe inner extremities and thence-back to another point at the outer extremity, an ionizable medium in each ci said passages, and electrodes arranged at the outer ends only oi each of said passages.
  • An electric discharge lamp comprising a glass bulb having a pair of spaced and opposed glass disc-shaped walls separated by t-wo pairs of transverse parallel interleaved spiraled glass partitions joined to and between said walls and each extending from outer peripheral extremities to a point at the center of the disc-shaped Walls where their inner extremities terminate in adjacent spaced relationship whereby to jointly deiine a continuous spiral passage bounded by the adjacent convolutions of said partitions and extending from the outer extremity thereof to the inner extremities and thence back to another point at the outer extremity, a different ionizable medium in each of said passages, and electrodes arranged at the outer ends only of each of said passages.
  • An electric discharge lamp comprising a glass bulb having a pair oi spaced and opposed glass disc-shaped Walls separated by a pair of transverse parallel interleaved spiraled glass partitions joined to and between said walls and extending from outer peripheral extremities to a point at the center of the disc-shaped walls where their inner extremities terminate in adjacent spaced relationship whereby to jointly comprise a Y continuous spiral passage bounded by the adjacent convolutions oi' said partitions and extending from the outer extremity thereof to the inner extremities and thence Vbaci: to another point at the outer extremity, an ionizable medium in said passage, fluorescent material on the inside of the walls of'saicl passage, and electrodes arranged at the outer ends only of said passage.
  • An electric discharge lamp comprising a glass bulb having a pair of spaced and opposed glass disc-shaped walls separated by two pairs of transverse parallel interleaved spiraled glass partitions joined to and between said walls and each Vextending from outer peripheral extremities to a point at the center of the disc-shaped walls where their inner extremities terminate in adjacent spaced relationship whereby to jointly define a continuous spiral passage bounded by the adjatending from outer peripheral extremities to a A cent convolutions of said partitions and extending from the outer extremity thereof to the inner extremities and thence back to another point at the outer extremity, an ionizable medium in each oi' said passages, uorescent material on the inside oi the walls oi' said passages, and electrodes arranged at the outer ends only of each of said passages.
  • An electric discharge lamp comprising a. glass bulb having a pair of spaced and opposed glass said passage, tubes sealed to the ends only oi said passage, and an electrode in each of said tubes.
  • An electric discharge lamp comprising a glass bulb having a pair of spaced and opposed disc-shaped walls separated by two pairs of transverse parallel interleaved spiraled glass partitions joined to and between said walls and each extending from outer peripheral extremities to a point at the center of the disc-shaped walls where their inner extremities terminate in adjacent spaced ous spiral passage bounded by the adjacent convolutions of said partitions and extending from the outer extremity thereof to the inner extremities and thence back to another point at the outer extremity, a danderrent ionizable medium in each of said passages, a fluorescent material lon the inside wall of at least one ofsaid passages, and electrodes arranged at the outer ends only of each of said passages.
  • An electric discharge lamp comprising a glass bulb having a pair of spaced and opposed glass disc-shaped walls separated by two pairs of transverse parallel interleaved spiraled glass partitions joined to and between said walls and each extending i'rom outer peripheral extremities to a point at the center of the disc-shaped walls Where their inner extremities terminate in adjacent spaced relationship whereby to jointly comprise a continuous spiral passage bounded by the adjacent convolutions nf said partitions and extending from the outer extremity thereof to the inner extremities and thence back to another point at the outer extremity, a diierent ionizable medium' in each of said passages, a diierent iiuorescent material in each of said passages, and electrodes arranged at the outer ends only of each of said passages.
  • An electric lamp comprising a sealed ilat bulb having a substantially flat bottom wall and a substantially ilat transparent cover plate parallei to the bottom wall, convolute partitions in said ends only of said passages, lead-iris for the electrodes, and a suitable gas illling said bulb and providing a discharge path between opposing electrodes serving as a source of illumination.
  • An electric discharge lamp comprising a glass bulb having a pair of spaced and opposed walls and a pair of transverse parallel interleaved spiraled partitions between said walls extending from outer extremities to a. point where their inner extremities terminate in adjacent spaced relationship whereby to provide a continuous spiral passage bounded by the adjacent convolutions of said partitions and extending from the outer extremity thereof to the inner extremities and thence back to another point at the outer extremity, the outer end of each of said partitions being turned inward and joined to an adjacent portion of the other partition so that the outermost convolutions of the partitions themselvesv constitute the outer boundaries of said passage, an ionizable medium in said passage, and electrodes arranged at the outer ends of said passage. 11.
  • An electric discharge lamp comprising a glass bulb having a pair of spaced and opposed glass disc-shaped walls separated by a pair of transverse parallel interleaved spiraled glass partitions joined to and between said Walls and extending from outer peripheral extremities to a point at the center of the disc-shaped walls where their inner extremities terminate in adjacent spaced relationship whereby to jointly define a continuous spiral passage bounded by the adjacent convolutions of said partitions and extending from the outer extremity thereof to the inner extremities and thence back to another point at the outer extremity, the outer end of each of said partitions being turned inw-ard and joined to an adjacent portion of the other partition so that the outermost convolutions of the partitions themselves constitute the outer boundaries of said passage, an ionizable medium in said passage, and electrodes arranged at the outer ends only of said passage.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
US650067A 1944-12-21 1946-02-25 Electric discharge lamp Expired - Lifetime US2501376A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2563344A GB590704A (en) 1944-12-21 Improvements in and relating to electric discharge lamps

Publications (1)

Publication Number Publication Date
US2501376A true US2501376A (en) 1950-03-21

Family

ID=10230820

Family Applications (1)

Application Number Title Priority Date Filing Date
US650067A Expired - Lifetime US2501376A (en) 1944-12-21 1946-02-25 Electric discharge lamp

Country Status (3)

Country Link
US (1) US2501376A (enrdf_load_stackoverflow)
BE (1) BE463974A (enrdf_load_stackoverflow)
FR (1) FR922052A (enrdf_load_stackoverflow)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE839975C (de) * 1950-08-11 1952-05-26 Fritz Zoerner Neon- oder Leuchtstoffroehre
US2961541A (en) * 1952-08-13 1960-11-22 Isomet Corp Monitoring ionizing radiation
US3089956A (en) * 1953-07-10 1963-05-14 Westinghouse Electric Corp X-ray fluorescent screen
US3508103A (en) * 1967-03-07 1970-04-21 Westinghouse Electric Corp Laminated metal-glass panel fluorescent lamp
US3646383A (en) * 1970-01-09 1972-02-29 Gen Electric Fluorescent panel lamp
US5034655A (en) * 1988-08-26 1991-07-23 Hitachi, Ltd. Circular fluorescent lamp
WO1995034087A1 (en) * 1994-06-06 1995-12-14 Fallon Luminous Products Corporation Gas discharge light
EP0698913A3 (enrdf_load_stackoverflow) * 1994-08-17 1996-03-06 Matsushita Electric Works Ltd
US5708324A (en) * 1996-03-18 1998-01-13 Matsushita Research And Development Laboratory Inc. Fluorescent lamp with different density phosphor coatings on the front panel and internal channels
US5767618A (en) * 1996-02-09 1998-06-16 Matsushita Electric Works Research And Development Laboraties Inc. Flat compact fluorescent lamp with inter-channel discharge suppression
WO1998039792A1 (en) * 1997-02-19 1998-09-11 Corning Incorporated Improved product and process for neon lamp
US5811925A (en) * 1996-12-04 1998-09-22 Matsushita Electric Works Research And Development Laboratory, Inc. Integrally molded flat compact fluorescent lamp
EP1358829A1 (fr) 2002-05-03 2003-11-05 Patrice Roubinowitz Valet d'aide à l'habillage et vêtement associé
US20060006781A1 (en) * 2004-07-09 2006-01-12 Shiro Iida Lamp having an arc tube protected from breakage
JP2006202668A (ja) * 2005-01-24 2006-08-03 Toshiba Lighting & Technology Corp 蛍光ランプ、蛍光ランプ装置及び照明器具
US20120320582A1 (en) * 2010-02-26 2012-12-20 Osram Ag Lamp comprising at least one light source and an electronic operating device

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1813759A (en) * 1928-07-14 1931-07-07 Color Ray Holding Corp Luminous tube
US1870147A (en) * 1931-04-02 1932-08-02 Emanuel C Smally Illuminating device
US1935423A (en) * 1929-01-28 1933-11-14 Gen Electric Electric discharge device
US1961735A (en) * 1928-08-17 1934-06-05 Gen Electric Vapor Lamp Co Electric sign
US1981903A (en) * 1930-10-30 1934-11-27 Connecticut Telephone & Elec Luminescent gas lighting apparatus
US1984215A (en) * 1931-01-16 1934-12-11 Hotchner Fred Vacuum vessel and illuminating device
US2009375A (en) * 1928-05-31 1935-07-23 Gen Electric Vapor Lamp Co Luminescent tube
US2042316A (en) * 1930-11-07 1936-05-26 Arthur A Johnson Electric signal
GB513715A (en) * 1938-05-12 1939-10-19 Gen Electric Co Ltd Improvements in electric discharge lamps
US2205672A (en) * 1938-10-13 1940-06-25 David F Sawyer Lighting element and fixture therefor
US2255431A (en) * 1939-10-21 1941-09-09 Westinghouse Electric & Mfg Co Molded fluorescent lamp
US2269819A (en) * 1938-08-17 1942-01-13 Gen Luminescent Corp White light lamp
US2405518A (en) * 1945-11-14 1946-08-06 Igor B Polevitzky Illuminating device
US2406146A (en) * 1944-03-08 1946-08-20 John E Holmes Fluorescent lighting unit

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2009375A (en) * 1928-05-31 1935-07-23 Gen Electric Vapor Lamp Co Luminescent tube
US1813759A (en) * 1928-07-14 1931-07-07 Color Ray Holding Corp Luminous tube
US1961735A (en) * 1928-08-17 1934-06-05 Gen Electric Vapor Lamp Co Electric sign
US1935423A (en) * 1929-01-28 1933-11-14 Gen Electric Electric discharge device
US1981903A (en) * 1930-10-30 1934-11-27 Connecticut Telephone & Elec Luminescent gas lighting apparatus
US2042316A (en) * 1930-11-07 1936-05-26 Arthur A Johnson Electric signal
US1984215A (en) * 1931-01-16 1934-12-11 Hotchner Fred Vacuum vessel and illuminating device
US1870147A (en) * 1931-04-02 1932-08-02 Emanuel C Smally Illuminating device
GB513715A (en) * 1938-05-12 1939-10-19 Gen Electric Co Ltd Improvements in electric discharge lamps
US2269819A (en) * 1938-08-17 1942-01-13 Gen Luminescent Corp White light lamp
US2205672A (en) * 1938-10-13 1940-06-25 David F Sawyer Lighting element and fixture therefor
US2255431A (en) * 1939-10-21 1941-09-09 Westinghouse Electric & Mfg Co Molded fluorescent lamp
US2406146A (en) * 1944-03-08 1946-08-20 John E Holmes Fluorescent lighting unit
US2405518A (en) * 1945-11-14 1946-08-06 Igor B Polevitzky Illuminating device

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE839975C (de) * 1950-08-11 1952-05-26 Fritz Zoerner Neon- oder Leuchtstoffroehre
US2961541A (en) * 1952-08-13 1960-11-22 Isomet Corp Monitoring ionizing radiation
US3089956A (en) * 1953-07-10 1963-05-14 Westinghouse Electric Corp X-ray fluorescent screen
US3508103A (en) * 1967-03-07 1970-04-21 Westinghouse Electric Corp Laminated metal-glass panel fluorescent lamp
US3646383A (en) * 1970-01-09 1972-02-29 Gen Electric Fluorescent panel lamp
US5034655A (en) * 1988-08-26 1991-07-23 Hitachi, Ltd. Circular fluorescent lamp
WO1995034087A1 (en) * 1994-06-06 1995-12-14 Fallon Luminous Products Corporation Gas discharge light
US5777431A (en) * 1994-08-17 1998-07-07 Matsushita Electric Works R&D Lab. Substantially flat compact fluorescent lamp
EP0698913A3 (enrdf_load_stackoverflow) * 1994-08-17 1996-03-06 Matsushita Electric Works Ltd
US5767618A (en) * 1996-02-09 1998-06-16 Matsushita Electric Works Research And Development Laboraties Inc. Flat compact fluorescent lamp with inter-channel discharge suppression
US5708324A (en) * 1996-03-18 1998-01-13 Matsushita Research And Development Laboratory Inc. Fluorescent lamp with different density phosphor coatings on the front panel and internal channels
US5811925A (en) * 1996-12-04 1998-09-22 Matsushita Electric Works Research And Development Laboratory, Inc. Integrally molded flat compact fluorescent lamp
WO1998039792A1 (en) * 1997-02-19 1998-09-11 Corning Incorporated Improved product and process for neon lamp
EP1358829A1 (fr) 2002-05-03 2003-11-05 Patrice Roubinowitz Valet d'aide à l'habillage et vêtement associé
US20060006781A1 (en) * 2004-07-09 2006-01-12 Shiro Iida Lamp having an arc tube protected from breakage
US7586250B2 (en) * 2004-07-09 2009-09-08 Panasonic Corporation Lamp having an arc tube protected from breakage
JP2006202668A (ja) * 2005-01-24 2006-08-03 Toshiba Lighting & Technology Corp 蛍光ランプ、蛍光ランプ装置及び照明器具
US20120320582A1 (en) * 2010-02-26 2012-12-20 Osram Ag Lamp comprising at least one light source and an electronic operating device

Also Published As

Publication number Publication date
BE463974A (enrdf_load_stackoverflow) 1946-04-30
FR922052A (fr) 1947-05-28

Similar Documents

Publication Publication Date Title
US2501376A (en) Electric discharge lamp
US2555749A (en) Fluorescent lamp
US4208618A (en) Compact single-ended fluorescent lamp
US3501662A (en) Planar or three-dimensional fluorescent lamp and method of manufacture
US2255431A (en) Molded fluorescent lamp
JPS5945176B2 (ja) 低圧水銀蒸気放電灯
US2501375A (en) Electric discharge lamp
US5811925A (en) Integrally molded flat compact fluorescent lamp
US2346522A (en) Fluorescent lamp
GB1578246A (en) Fluorescent lighting
US3024383A (en) Fluorescent lamp
EP0037589B1 (en) Low pressure metal vapour discharge lamp
US4191907A (en) Compact single-ended fluorescent lamp having a partitioned envelope
US2561868A (en) Gaseous electric discharge lamp
JPS59186245A (ja) コンパクトけい光ランプ
US2492619A (en) Electrical discharge tube
US4237400A (en) Low-pressure discharge lamp with tortuous discharge path
US1951137A (en) Gaseous electric discharge device
US1951138A (en) Gaseous electric discharge lamp device
US1935423A (en) Electric discharge device
US2494857A (en) Method for making electric discharge lamps
US3296480A (en) Gas discharge lamps with sinuous discharge path between electrodes
KR950010906B1 (ko) 저압수은 방전램프
GB1337134A (en) Metal halide lamp
GB2071407A (en) Low-pressure discharge lamp