US3784807A - Electric lamp - Google Patents

Electric lamp Download PDF

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Publication number
US3784807A
US3784807A US00288596A US3784807DA US3784807A US 3784807 A US3784807 A US 3784807A US 00288596 A US00288596 A US 00288596A US 3784807D A US3784807D A US 3784807DA US 3784807 A US3784807 A US 3784807A
Authority
US
United States
Prior art keywords
reflector
cover glass
lip
lamp
face
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
US00288596A
Other languages
English (en)
Inventor
A Boekkooi
A Heeman
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
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 US3784807A publication Critical patent/US3784807A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/26—Closing of vessels
    • 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
    • H01J5/20—Seals between parts of vessels
    • H01J5/22—Vacuum-tight joints between parts of vessel
    • H01J5/24—Vacuum-tight joints between parts of vessel between insulating parts of vessel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/36—Seals between parts of vessel, e.g. between stem and envelope
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0033—Vacuum connection techniques applicable to discharge tubes and lamps
    • H01J2893/0037—Solid sealing members other than lamp bases
    • H01J2893/0038—Direct connection between two insulating elements, in particular via glass material

Definitions

  • the invention relates to an electric lamp in which at least one incandescent lamp is arranged inside a gastight envelope consisting of a metal reflector and a cover glass, the reflector comprising a supporting edge for enclosing the cover glass, a glued joint being present between the cover glass and the supporting edge of the reflector.
  • a gastight envelope consisting of a metal reflector and a cover glass
  • the reflector comprising a supporting edge for enclosing the cover glass, a glued joint being present between the cover glass and the supporting edge of the reflector.
  • Such an electric lamp is known.
  • the cover glass is secured to the reflector by a glued joint.
  • Said glued joint serves on the one hand to transmit mechanical forces between the reflector and the cover glass, while on the other hand it should readily seal.
  • the difference between the coefficient of expansion of the metal reflector and the cover glass which nearly always consists of compressed glass, requires a flexible type of glue.
  • the cover glass formed from compressed glass is not entirely smooth over its side which faces the reflector and with which it engages the reflector edge.
  • the distance between the cover glass and the said reflector edge between which the glued joint is present may vary from zero to, for example, 0.4 mm.
  • water vapour may diffuse through the layer of glue into the reflector space and condense on the inside of the reflector which in a mounted lamp will rather rapidly give rise to corrosion of the reflecting layer present on the inner wall of the reflector.
  • the lamp according to the invention is characterized in that the supporting edge for enclosing the reflector is curled around the circumferential edge of the cover glass, preferably by a flanging operation, and the glued joint is present between the flanged edge where it is in contact with the cover glass and a circumferential part of the cover glass situated more towards the axis of the reflector.
  • the cover glass engages the supporting edge of the reflector in a tightly fitting manner throughout its circumference without the interposition of glue in spite of the fact that cover glasses of compressed glass are used which do not have entirely smooth engaging sides.
  • a suitable type of glue preferably an epoxy resin
  • an epoxy resin preferably an epoxy resin
  • the introduction of epoxy glue which is used in a thin liquid condition is rather simple. For this purpose it is sufficient to arrange the reflector with its cover glass directed upwards and to pour the glue into the channel. This presents the possibility of accurately dosing and using only a small quantity of epoxy resin which is cost-saving.
  • a lamp thus constructed is characterized in that a drier is present in the space between the curled edge of the reflector and the circumferential edge of the cover glass, above which the water vapour pressure at the highest operating temperature which can occur in said space is smaller than or corresponds approximately to the water pressure at 0C.
  • the drawing shows diagrammatically a so-called halogen sealed beam lamp.
  • This lamp comprises a metal reflector 1 which is provided on its inner surface with a reflecting layer of aluminium, a transparent cover glass 3 of compressed glass and a halogen incandescent lamp 5 the conductors 7 and 9 of which are connected to the terminals 13 and 11 ofa base 15.
  • Said base is connected to the reflector 1 by means of a cold setting epoxy resin.
  • the reflector 1 comprises a supporting edge which has a flange 21 extending transverse to the reflector axis 19 and on which the cover glass 3 supports while enclosing a ring 17 of cardboard.
  • the said flange 21 comprises a cylindrical part 23 of which a portion 25 is curled by a flanging operation, The curled portion 25 is provided so that the cover glass 3 at its flanged part 27 is clamped between the flange 21 and the free edge 29 of the flanged portion 25.
  • the edge 29 is in contact with said flange 27 throughout the circumference of the flange 27.
  • An annular space which is filled with a mass 33 formed from a cold-setting epoxy resin is present between the portion 25 and a cylindrical wall 31 of the cover glass 1 directed more towards the reflector axis 19.
  • Said mass which is processed in a thin liquid state is provided in a position of the lamp in which the reflector axis 19 and the space between the edge 25 and the wall 31 are directed upwards as a channel to receive said mass.
  • the quantity of glue can be accurately dosed. Also by this manner of enclosing the mass of glue it is achieved that the diffusion for water vapour from the atmosphere through said mass and taken from the reflector axis 19 to the edge 29 becomes smaller and smaller.
  • a drier is present in the torus-shaped space 35 which is formed as a result of the flanging operation and which during operation of the lamp forms the relatively coldest place.
  • driers are preferably used so-called molecular sieves of which synthetic zeolites which are marketed by Union Carbide are examples.
  • an electric lamp of the type having at least one incandescent lamp arranged inside a gas-tight envelope and consisting of a metal reflector and a cover glass
  • the cover glass has a circumferential outer lip, said lip having an inner annular face for abutting the reflector, an outer circumferential edge portion and an outer annular face, said outer face forming a space having an L-shaped crosssection with a cylindrical wall of the cover glass
  • the reflector having a central axis and having a portion for supporting the cover glass, said supporting portion of the reflector extending over the outer lip of the cover glass and substantially conforming to the inner abutting face and outer edge and having a portion curled over the lip toward the axis of the reflector, the curled portion having a free end pressing against the outer face of the lip, the lower portion of the curl including the free end forming an openended annular volume with said L-shaped portion, said annular volume having an epoxy resin disposed therein to join the glass and reflector portions.
  • An electric lamp as claimed in claim 1 wherein a drier is present in the space within the curled portion of the reflector and bounded by the outer face of the lip, above which the water vapour pressure at the highest operating temperature which can occur in said space is smaller than or corresponds approximately to the water pressured at 0C.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
US00288596A 1971-09-17 1972-09-13 Electric lamp Expired - Lifetime US3784807A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7112768.A NL159229B (nl) 1971-09-17 1971-09-17 Elektrische lamp.

Publications (1)

Publication Number Publication Date
US3784807A true US3784807A (en) 1974-01-08

Family

ID=19814037

Family Applications (1)

Application Number Title Priority Date Filing Date
US00288596A Expired - Lifetime US3784807A (en) 1971-09-17 1972-09-13 Electric lamp

Country Status (9)

Country Link
US (1) US3784807A (enrdf_load_stackoverflow)
JP (1) JPS4857488A (enrdf_load_stackoverflow)
BE (1) BE788915A (enrdf_load_stackoverflow)
CA (1) CA963072A (enrdf_load_stackoverflow)
DE (1) DE2242571C3 (enrdf_load_stackoverflow)
FR (1) FR2153081B3 (enrdf_load_stackoverflow)
GB (1) GB1333029A (enrdf_load_stackoverflow)
IT (1) IT967444B (enrdf_load_stackoverflow)
NL (1) NL159229B (enrdf_load_stackoverflow)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2907287A1 (de) * 1978-03-06 1979-09-20 Gte Sylvania Inc Elektrische reflektorlampe mit einer wolfram-halogen-lampe
DE2928595A1 (de) * 1978-09-21 1980-04-03 Seima Optischer einsatz, insbesondere fuer automobilscheinwerfer
US4240131A (en) * 1979-03-14 1980-12-16 Minnesota Mining And Manufacturing Company Sealed lighting element assembly
US4241391A (en) * 1978-02-27 1980-12-23 Westinghouse Electric Corp. Inner lamp-mount assembly for sealed-beam headlamp and similar lighting apparatus
US4240853A (en) * 1978-10-20 1980-12-23 Esquire, Inc. Lens closure for light fixture and method for attachment
US4259712A (en) * 1978-07-03 1981-03-31 General Electric Company Sealed, prefocused mount for plastic PAR lamp
US4287448A (en) * 1979-07-16 1981-09-01 General Electric Company Mechanical stop means for a prefocused plastic PAR lamp
US4336578A (en) * 1979-07-30 1982-06-22 General Electric Company Plastic par lamp construction with reinforced recepticle area
US4336577A (en) * 1979-07-30 1982-06-22 General Electric Company Mounting pads for plastic par lamp
US4339790A (en) * 1979-07-30 1982-07-13 General Electric Company Sealed prefocused mount for plastic par lamp
US4338708A (en) * 1979-07-16 1982-07-13 General Electric Company Lamp assembly method
US4344120A (en) * 1979-07-30 1982-08-10 General Electric Company Plastic PAR lamp construction with tapered reinforcement
US4372794A (en) * 1979-07-30 1983-02-08 General Electric Company Plastic PAR lamp construction
US4414613A (en) * 1980-12-23 1983-11-08 Stewart-Warner Corporation Rectangular seal beam lamp and support with halogen bulb
US4604679A (en) * 1984-03-13 1986-08-05 Carello Industriale, S.P.A. Method of assembling a motor vehicle headlight, and headlight produced using such a method
US4665471A (en) * 1985-12-13 1987-05-12 General Electric Company Sealed headlamp
EP0252447A3 (en) * 1986-07-07 1989-11-15 Gte Products Corporation Electric lamp with flexible cover holder
EP0252446A3 (en) * 1986-07-07 1989-11-15 Gte Products Corporation Electric lamp with ceramic reflector
US5516390A (en) * 1993-07-21 1996-05-14 Aica Kogyo Co., Ltd. Method of sealing a vehicle lighting fixture
US20080019138A1 (en) * 2006-07-21 2008-01-24 Schott Ag Reflector having a prismatic structure
CN101737760B (zh) * 2009-12-28 2012-08-22 广东昭信光电科技有限公司 一种led照明模块的水密性封装方法
WO2021219165A3 (de) * 2020-04-27 2021-12-23 Kellermann Gmbh Fügeverfahren zum fügen eines leuchtenglases einer fahrzeugleuchte in ein leuchtengehäuse der fahrzeugleuchte sowie fahrzeugleuchte

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6020769U (ja) * 1983-07-18 1985-02-13 日本電気株式会社 衝立
DE3612987A1 (de) * 1986-04-17 1987-10-29 Hella Kg Hueck & Co Fahrzeugscheinwerfer
DE3809160A1 (de) * 1988-03-18 1989-09-28 Leybold Ag Infrarot-strahlungsquelle, insbesondere fuer ein mehrkanaliges gasanalysegeraet
FR2871750A1 (fr) * 2004-06-18 2005-12-23 Valeo Vision Sa Dispositif d'eclairage et/ou de signalisation pour vehicule automobile
DE102006054019A1 (de) * 2006-11-16 2008-05-21 Bayerische Motoren Werke Ag Kraftfahrzeugleuchte
CN107327781A (zh) * 2017-07-05 2017-11-07 重庆长野汽车配件有限公司 一种防水的汽车灯

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1322044A (en) * 1919-11-18 Reflector-lamp rim
US1339695A (en) * 1916-12-05 1920-05-11 Douglas & Rudd Mfg Co Reflecting-lamp
US1622437A (en) * 1924-02-18 1927-03-29 Shot Lite Corp Lens supporting and retaining means
US2003687A (en) * 1931-12-25 1935-06-04 Electric Service Supplies Co Headlight
US2317035A (en) * 1941-03-28 1943-04-20 Gen Electric Electric lamp
US3010045A (en) * 1955-05-27 1961-11-21 Westinghouse Electric Corp Sealed-beam lamp and method of manufacture

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4423746Y1 (enrdf_load_stackoverflow) * 1966-02-24 1969-10-07

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1322044A (en) * 1919-11-18 Reflector-lamp rim
US1339695A (en) * 1916-12-05 1920-05-11 Douglas & Rudd Mfg Co Reflecting-lamp
US1622437A (en) * 1924-02-18 1927-03-29 Shot Lite Corp Lens supporting and retaining means
US2003687A (en) * 1931-12-25 1935-06-04 Electric Service Supplies Co Headlight
US2317035A (en) * 1941-03-28 1943-04-20 Gen Electric Electric lamp
US3010045A (en) * 1955-05-27 1961-11-21 Westinghouse Electric Corp Sealed-beam lamp and method of manufacture

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4241391A (en) * 1978-02-27 1980-12-23 Westinghouse Electric Corp. Inner lamp-mount assembly for sealed-beam headlamp and similar lighting apparatus
DE2907287A1 (de) * 1978-03-06 1979-09-20 Gte Sylvania Inc Elektrische reflektorlampe mit einer wolfram-halogen-lampe
US4259712A (en) * 1978-07-03 1981-03-31 General Electric Company Sealed, prefocused mount for plastic PAR lamp
DE2928595A1 (de) * 1978-09-21 1980-04-03 Seima Optischer einsatz, insbesondere fuer automobilscheinwerfer
US4240853A (en) * 1978-10-20 1980-12-23 Esquire, Inc. Lens closure for light fixture and method for attachment
US4240131A (en) * 1979-03-14 1980-12-16 Minnesota Mining And Manufacturing Company Sealed lighting element assembly
US4338708A (en) * 1979-07-16 1982-07-13 General Electric Company Lamp assembly method
US4287448A (en) * 1979-07-16 1981-09-01 General Electric Company Mechanical stop means for a prefocused plastic PAR lamp
US4336578A (en) * 1979-07-30 1982-06-22 General Electric Company Plastic par lamp construction with reinforced recepticle area
US4336577A (en) * 1979-07-30 1982-06-22 General Electric Company Mounting pads for plastic par lamp
US4339790A (en) * 1979-07-30 1982-07-13 General Electric Company Sealed prefocused mount for plastic par lamp
US4344120A (en) * 1979-07-30 1982-08-10 General Electric Company Plastic PAR lamp construction with tapered reinforcement
US4372794A (en) * 1979-07-30 1983-02-08 General Electric Company Plastic PAR lamp construction
US4414613A (en) * 1980-12-23 1983-11-08 Stewart-Warner Corporation Rectangular seal beam lamp and support with halogen bulb
US4604679A (en) * 1984-03-13 1986-08-05 Carello Industriale, S.P.A. Method of assembling a motor vehicle headlight, and headlight produced using such a method
US4665471A (en) * 1985-12-13 1987-05-12 General Electric Company Sealed headlamp
EP0252447A3 (en) * 1986-07-07 1989-11-15 Gte Products Corporation Electric lamp with flexible cover holder
EP0252446A3 (en) * 1986-07-07 1989-11-15 Gte Products Corporation Electric lamp with ceramic reflector
US5516390A (en) * 1993-07-21 1996-05-14 Aica Kogyo Co., Ltd. Method of sealing a vehicle lighting fixture
US20080019138A1 (en) * 2006-07-21 2008-01-24 Schott Ag Reflector having a prismatic structure
CN101737760B (zh) * 2009-12-28 2012-08-22 广东昭信光电科技有限公司 一种led照明模块的水密性封装方法
WO2021219165A3 (de) * 2020-04-27 2021-12-23 Kellermann Gmbh Fügeverfahren zum fügen eines leuchtenglases einer fahrzeugleuchte in ein leuchtengehäuse der fahrzeugleuchte sowie fahrzeugleuchte

Also Published As

Publication number Publication date
NL7112768A (enrdf_load_stackoverflow) 1973-03-20
FR2153081B3 (enrdf_load_stackoverflow) 1975-10-17
BE788915A (fr) 1973-03-15
GB1333029A (en) 1973-10-10
FR2153081A1 (enrdf_load_stackoverflow) 1973-04-27
JPS4857488A (enrdf_load_stackoverflow) 1973-08-11
DE2242571C3 (de) 1979-09-06
DE2242571B2 (de) 1979-01-11
IT967444B (it) 1974-02-28
DE2242571A1 (de) 1973-03-22
NL159229B (nl) 1979-01-15
CA963072A (en) 1975-02-18

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