EP0422936A2 - Construction améliorée d'une lampe compacte à réflecteur - Google Patents

Construction améliorée d'une lampe compacte à réflecteur Download PDF

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Publication number
EP0422936A2
EP0422936A2 EP90311147A EP90311147A EP0422936A2 EP 0422936 A2 EP0422936 A2 EP 0422936A2 EP 90311147 A EP90311147 A EP 90311147A EP 90311147 A EP90311147 A EP 90311147A EP 0422936 A2 EP0422936 A2 EP 0422936A2
Authority
EP
European Patent Office
Prior art keywords
reflector
lamp unit
electrical conductors
unit according
pair
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.)
Withdrawn
Application number
EP90311147A
Other languages
German (de)
English (en)
Other versions
EP0422936A3 (en
Inventor
Frank Edward Zalar
Gustino Joseph Lanese
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
Application filed by General Electric Co filed Critical General Electric Co
Publication of EP0422936A2 publication Critical patent/EP0422936A2/fr
Publication of EP0422936A3 publication Critical patent/EP0422936A3/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/42—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp
    • H01K1/46—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp supported by a separate part, e.g. base, cap
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material

Definitions

  • This invention relates generally to construction of a reflector lamp unit, and more particularly to structural modification for compact reflector lamp units to enable installation in already existing socket fixtures.
  • PAR Parabolic aluminized reflector
  • R reflector lamps
  • PAR and some R lamps had relatively large physical dimensions when compared to common incandescent lamps.
  • the requirement for installation of said lamps into relatively large socket fixtures limited their application particularly for indoor installation. Accordingly, subsequent PAR and R lamp designs has reduced overall dimensions while still main­taining the precise efficient beam control so as to increase their utilization for indoor applications.
  • the present invention enables a still further size reduction of a compact reflector member to ameliorate the difficulties above pointed out in connection with conventional reflector lamp units of this type.
  • As a structural modification it uses an electrically non-conduc­tive hollow sleeve adhesively bonded at one end to the bottom portion of the reflector member while being adhesively bonded at the opposite end to a hollow metal screw base of the reflector lamp unit.
  • a reflector lamp unit having said modified construction includes: (a) a reflector having an internal electrically conductive reflective surface and a longitudinally extending bottom portion, (b) a tungsten-halo­gen lamp being positioned approximately at the optical focal point of the reflector which comprises an elongated sealed envelope of light transmissive material containing an inert gas fill and a halogen substance together with a tungsten filament being suspended therein by at least one pair of electrical conductors sealed at one end of the lamp envelope in a pinch seal region and protruding from the sealed envelope, (c) a hollow metal screw base affixed to the bottom portion of the reflector with an interposed electrically non-­conductive sleeve member having a hollow internal cavity and being provided at one end with an interior contour sized and shaped to accommodate insertion and physical support of the bottom reflector portion inserted thereinto while being pro­vided at the opposite end with an external contour sized to accommodate insertion of said opposite end into the hollow screw base, the sle
  • the longitudinally extending bottom portion of the reflector terminates in at least one pair of openings extending therethrough and a pair of electrically conductive post members extending through said openings for connection to the pair of protruding electrical conductors.
  • the outermost end of both post members can terminate within the internal cavity of the hollow sleeve so as to be electrically connected thereat to additional electrical conductors emerging from opposite end locations of the hollow sleeve which are electrically con­nected to the screw base.
  • the present reflector lamp unit comprises: (a) a pressed glass concave reflector having a parabolic shaped internal electrically conductive reflective surface and a longitudinally extending conical shaped bottom portion, the bottom portion further terminating in at least one pair of openings extending therethrough, (b) a tungsten-halogen lamp which includes a coiled tungsten filament being positioned approximately at the optical focal point of the reflector, the tungsten-halogen lamp further including an elongated sealed aluminosilicate glass envelope which contains a fill at superatmospheric pressure of at least one rare gas and a vaporizable halogen compound, and the tungsten filament coil being suspended at opposite ends from at least one pair of electrical conductors sealed at one end of the glass envelope in a pinch seal region and pro­truding from the sealed envelope, (c) an electrically non-­conductive sleeve member having a hollow cavity and physically securing the reflector bottom portion to a hollow metal screw base, the
  • the lamp unit 10 includes a reflector 12 secured to a screw base 14 in the manner hereinafter defined and a tungsten-halogen lamp 16.
  • the reflector 12 has an internal reflective parabolic surface 18 which may be typi­cally a silver, aluminum or dichroic type and a bottom por­tion 20 having a longitudinally extending conical configura­tion as shown.
  • Bottom 20 of the reflector 12 is secured to the top end of a hollow non-conductive sleeve 22 which has a cylindrical shape while the bottom end of said sleeve 22 is similarly secured to screw base 14.
  • bottom portion 20 of reflector 12 further in­cludes a pair of openings 24 and 26 provided with elec­trically non-conductive refractory type closure mean 28 which are secured to a central opening 29 terminating the lower end of said bottom portion 20.
  • Reflector cavity 30 is fur­thur closed at its top end with a conventional lens element 32.
  • Physical joinder of reflector 12 to base 14 by adhesive bonding to intervening sleeve 22 enables the reflector bottom portion 20 to be materially shortened in length while essen­tially preserving the overall lamp unit length for mounting in existing R30 socket fixtures. For example a one-half-­inch (12.7 mm) shorter reflector bottom portion can now be employed for the particular lamp unit being described.
  • Tungsten-halogen lamp 16 includes an axially aligned tungsten coil filament 31 hermetically sealed within an elongated lamp envelope 33 so as to have the center of the tungsten coil reside approximately at the optical focal point of reflector 12.
  • Filament coil 31 is physically suspended within lamp envelope 33 by a composite assembly of "lead wire" type electrical conductors 34, 36, 30 and 40. More particularly, such cooperating lead wire construction employs a first pair of electrical conductors 34 and 36 con­nected at one end to the lamp filament coil 31 while being individually connected at the opposite ends to larger dia­ meter electrical conductors 38 and 40 in the stem press region 42 of the lamp envelope 33.
  • sleeve member 22 has a particular structural configuration (to be more fully explained in connection with related FIGS. 2(a) and 2(b)) which enhances automated assembly of the lamp parts. More particularly, an upper tapered portion 48 of the hollow sleeve member enables reflector bottom por­tion 20 to be fitted thereinto for joinder together with con­ventional adhesive means whereas a cylindrical lower portion 50 of said sleeve enables its insertion into the hollow screw base 14 for similar joinder thereto. Additional surface relief features are further provided enabling these lamp components to cooperate when being joined together.
  • the lamp embodiments herein illustrated without departing from the scope of the present invention.
  • the invention has been described, in an important application thereof, in the context of reflector lamp units incorporating tungsten-halogen lamps, it may also find application in such units incorporating other light sources capable of being similarly mounted with the reflector.
  • the sleeve member construction can employ other electrically non-conductive materials including glass and ceramics.
  • the parabolic reflecting surface of the reflector member herein illustrated can be provided with other already known contours while the reflective surface can be provided with stippling or a diffuse reflective coating as well as other known multi-faceted reflective configurations.
  • the present tungsten-halogen lamp construction can include various tungsten filaments, sized and shaped for the particular wattage and voltage requirements of the intended lamp unit applications.
  • already known thermal shield means can also be included in the present lamp construction.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
EP19900311147 1989-10-13 1990-10-11 Improved compact reflector lamp unit construction Withdrawn EP0422936A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US42144789A 1989-10-13 1989-10-13
US421447 1989-10-13

Publications (2)

Publication Number Publication Date
EP0422936A2 true EP0422936A2 (fr) 1991-04-17
EP0422936A3 EP0422936A3 (en) 1991-08-21

Family

ID=23670554

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900311147 Withdrawn EP0422936A3 (en) 1989-10-13 1990-10-11 Improved compact reflector lamp unit construction

Country Status (3)

Country Link
EP (1) EP0422936A3 (fr)
JP (1) JPH03179658A (fr)
CA (1) CA2021608A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0543448A1 (fr) * 1991-11-18 1993-05-26 Koninklijke Philips Electronics N.V. Lampe électrique à réflecteur
CN1043827C (zh) * 1991-11-18 1999-06-23 皇家菲利浦电子有限公司 反光电灯
EP1298703A2 (fr) * 2001-09-24 2003-04-02 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à réflecteur
EP1439562A3 (fr) * 2003-01-15 2006-02-01 Vitri Electro-Metalurgica S.A. Procédé de fabrication de culots d'ampoules lumineuses électriques

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2406271A (en) * 1942-01-30 1946-08-20 Gen Electric Base for electric lamps or similar devices
US3243634A (en) * 1963-04-22 1966-03-29 Gen Electric Electric lamp and support web
EP0186827A2 (fr) * 1984-12-14 1986-07-09 General Electric Company Enveloppement en plastique pour joindre inébranlablement le culot métallique et l'ampoule en verre d'une lampe
JPS61208720A (ja) * 1985-03-11 1986-09-17 Minoru Nishibori 電球体のバルブケ−スへの取付方法
EP0276780A2 (fr) * 1987-01-23 1988-08-03 Gte Products Corporation Lampe à réflecteur comportant un élément de support multifonctionnel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61216233A (ja) * 1985-03-20 1986-09-25 松下電子工業株式会社 ミラ−付ハロゲン電球

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2406271A (en) * 1942-01-30 1946-08-20 Gen Electric Base for electric lamps or similar devices
US3243634A (en) * 1963-04-22 1966-03-29 Gen Electric Electric lamp and support web
EP0186827A2 (fr) * 1984-12-14 1986-07-09 General Electric Company Enveloppement en plastique pour joindre inébranlablement le culot métallique et l'ampoule en verre d'une lampe
JPS61208720A (ja) * 1985-03-11 1986-09-17 Minoru Nishibori 電球体のバルブケ−スへの取付方法
EP0276780A2 (fr) * 1987-01-23 1988-08-03 Gte Products Corporation Lampe à réflecteur comportant un élément de support multifonctionnel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 11, no. 41 (E-478)(2488) 06 February 1987, & JP-A-61 208720 (MINORU NISHIBORI) 17 September 1986, *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0543448A1 (fr) * 1991-11-18 1993-05-26 Koninklijke Philips Electronics N.V. Lampe électrique à réflecteur
CN1043827C (zh) * 1991-11-18 1999-06-23 皇家菲利浦电子有限公司 反光电灯
EP1298703A2 (fr) * 2001-09-24 2003-04-02 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à réflecteur
EP1298703A3 (fr) * 2001-09-24 2006-05-03 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à réflecteur
EP1439562A3 (fr) * 2003-01-15 2006-02-01 Vitri Electro-Metalurgica S.A. Procédé de fabrication de culots d'ampoules lumineuses électriques

Also Published As

Publication number Publication date
JPH03179658A (ja) 1991-08-05
CA2021608A1 (fr) 1991-04-14
EP0422936A3 (en) 1991-08-21

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