US3673453A - Electric lamp comprising a lamp base of a synthetic material - Google Patents

Electric lamp comprising a lamp base of a synthetic material Download PDF

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Publication number
US3673453A
US3673453A US32286A US3673453DA US3673453A US 3673453 A US3673453 A US 3673453A US 32286 A US32286 A US 32286A US 3673453D A US3673453D A US 3673453DA US 3673453 A US3673453 A US 3673453A
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US
United States
Prior art keywords
lamp
lamp base
base
conductors
current conductors
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
US32286A
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English (en)
Inventor
Cornelis Prijn
Franco Benedetti
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 US3673453A publication Critical patent/US3673453A/en
Anticipated expiration legal-status Critical
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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
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/10—Lighting devices or systems using a string or strip of light sources with light sources attached to loose electric cables, e.g. Christmas tree lights
    • 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
    • H01J5/54—Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base
    • H01J5/56—Shape of the separate part

Definitions

  • the invention relates to an electric lamp comprising a lamp base of a synthetic resin in which one or more conductors projecting from the lamp vessel extend over part of their length on the outside of the lamp base as external current contact members. Such a lamp is known.
  • the known construction is in the form of a miniature filament lamp of the Pisello type comprising a lamp base of a synthetic resin.
  • the lamp base of said lamp is inserted in one of the holders of a Christmas tree illumination set.
  • Said holders comprise electric contact members which are in contact with the current conductors extending on the outside of the lamp base.
  • a lamp base which comprises two parallel longitudinal channels through which the current conductors are threaded.
  • the conductors projecting from said channels are furthermore bent backwards to the outside over an edge portion of the lamp base'along the outside of the lamp base where they further extend in a non-fixed manner.
  • the two longitudinal channels in the conventional constructions are prescribed for reasons of safety, one for each conductor.
  • the lamp base construction described is used in particular for lamps having particularly small dimensions, for example, a diameter of the envelope of 1.5 mm, and the lamp base shows correspondingly small dimensions, it will be obvious that the channels in question through which the conductors have to be threaded both are extremely small and are situated at a small distance from each other. The threading of the conductors in the said channels has always been a time-consuming job which in practice is still carried out manually by home workers. This process can hardly be mechanized.
  • the construction of this lamp base is such that the above-mentioned threading operation is omitted and on the other hand the attractive possibility is ofiered of securing in the lamp base also in a simple manner the free ends of the current conductors projecting from the lamp.
  • the lamp according to the invention is characterized in that the parts of the relative conductors remote from the lamp vessel extend mainly on the outside of the lamp base, are bent inwards with their free ends around a wall portion of the lamp base, and are secured in the lamp base. It is preferably ensured that the parts of the conductors extending on the outside of the lamp base also extend for the greater part in the longitudinal direction of the lamp. A combination thus formed hence forms an indissoluble unit.
  • a particular embodiment may be used which is characterized in that the side of the lamp base remote from the lamp vessel comprises a recess in which the free ends of the relative conductors are held in place in a manner in which they are electrically insulated from each other by a member of insulating material secured in said recess.
  • the ends of the conductors after having been bent about the circumferential edge of the lower portion of the lamp base, are returned in the lamp cap and held in place there by a stopper which is provided in said lamp cap and which may also consist of a synthetic resin. The conductors are thus secured between said stopper and the wall of said recess present in the lamp base.
  • Said stopper may be secured in the recess by gluing; alternatively, the stopper may be given a conical shape and be formed into the recess.
  • this latter embodiment has the additional advantage that the conductors extending on the outside of the lamp base are stretched additionally so that said conductors extend in a uniformly prescribed manner along the outside of the lamp base and on the other hand the lamp is lamp base for receiving a stopper
  • another embodiment may be used, if desirable, which is characterized in that the lamp base is divided in its longitudinal direction, the ends of the currentconductors being incorporated in the dividing plane of the lamp vessel in an insulated manner relative to each other, the two parts of said lamp base being secured together in an undetachable manner.
  • the two halves in question of the holder can be secured together either by gluing or by means of pins present on one part which can be clamped in holes present on the other part.
  • the lamp base comprises a thickened cup-shaped upper portion which surrounds the relative cylindrical part of the lamp vessel in a clamping manner.
  • a few apertures should be provided at the place of the transition between said upper portion and the thinner base portion for passing the conductors to the outside of the thinner lamp base portion. Otherwise, said apertures can be proportioned particularly excessively, so that the threading of the conductors through said apertures presents no problems.
  • FIG. 1 is a longitudinal cross-sectional view of the lamp according to a first embodiment
  • FIG. 2 is a view from below of the lamp as shown in FIG. 1,
  • FIG. 3 is a longitudinal cross-sectional view of a lamp having a holder of synthetic material according to a second embodiment
  • FIG. 4 is a view from below of the lamp shown in FIG. 3.
  • FIG. 1 shows an electric filament lamp of the Pisello type; it comprises a lamp vessel 1 and a set of sealed current conductors 3 and 5, which are united by means of a glass bead 7.
  • 9 denotes the electric filament.
  • This lamp comprises a lamp base 11 which is flattened on two sides and comprises a cup-shaped portion 13.
  • the cup-shaped portion comprises a location which is adapted to the contours of the bottom of the lamp vessel 1.
  • Said lamp base 11 comprises two apertures 17 and 19 through which the conductors 3 and 5 are threaded.
  • Said conductors extend along the flat sides 15 and 16 and are bent backwards around the lower edge of the lamp base.
  • the free ends of the conductors are denoted by 21 and 23 and are bent backwards in the manner shown and incorporated in the lamp base.
  • This lamp which comprises a lamp base is suitable for use in series-arranged holders 25, for example, of a Christmas tree illumination set. These holders each comprise a set of contact lugs 27 and 29 which are connected to a supply cable 31.
  • the said ends 21 and 23 of the conductors are rigidly secured in the lamp base by means of a stopper 35 to be provided in a central recess 33, which stopper, after insertion, is clamped in the recess 33 serving as a chamber and clamps the ends of the conductors 21 and 23 between the wall of the said chamber and the outside of the stopper 35.
  • the parts 37 and 39 extending on the outside are rigidly stretched relative to the lamp vessel 1.
  • Another method of securing the stopper 35 is by a gluing operation. In both cases the indissolubility of the envelope and the lamp base is ensured.
  • the lamp base shown in F IGS'. 3 and 4 comprises two identical halves 41 and 43.
  • the lamp base comprises two flat sides 47 and 49 against which the conductors projecting from the lamp bear.
  • the fixing of the free ends of the conductors takes place, for example, by orienting said conductors, extending at some distance from each other, in the dividing plane of the lamp base.
  • the relative conductors are bent at an angle around its associated half of the lamp base, after which the two parts 41 and 43 are moved against each other and secured, for example, by gluing.
  • An electric lamp assembly comprising:
  • said base being divided in the longitudinal direction into two approximately identical portions, inner walls of said portions contacting at a single planar surface, said inner walls having longitudinal recesses therein adapted to receive current conductors, said recesses also being spaced apart and completely insulated from each other, said base portions also being secured to each other in an undetachable manner, said current conductors extending over the longitudinal walls outside of said lamp base for a portion of their length and adapted for use as external current contact members, said current conductors further extending along the bottom exterior walls of said base portion, the ends of said current conductors being extended to and disposed within said recesses, whereby the current conductors are clamped in an insulated fashion by said portions of said lamp base.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
US32286A 1969-05-02 1970-04-27 Electric lamp comprising a lamp base of a synthetic material Expired - Lifetime US3673453A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6906704A NL6906704A (enrdf_load_stackoverflow) 1969-05-02 1969-05-02

Publications (1)

Publication Number Publication Date
US3673453A true US3673453A (en) 1972-06-27

Family

ID=19806831

Family Applications (1)

Application Number Title Priority Date Filing Date
US32286A Expired - Lifetime US3673453A (en) 1969-05-02 1970-04-27 Electric lamp comprising a lamp base of a synthetic material

Country Status (6)

Country Link
US (1) US3673453A (enrdf_load_stackoverflow)
JP (1) JPS4814119B1 (enrdf_load_stackoverflow)
DE (1) DE2018702C3 (enrdf_load_stackoverflow)
FR (1) FR2046572A5 (enrdf_load_stackoverflow)
GB (1) GB1299985A (enrdf_load_stackoverflow)
NL (1) NL6906704A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028577A (en) * 1975-04-28 1977-06-07 Gte Sylvania Incorporated Electric lamp with insulating base
US4400646A (en) * 1981-03-09 1983-08-23 General Electric Company Shaped inlead wires in electric lamps

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5098313A (en) * 1990-04-24 1992-03-24 C.S.I.R. Connector for multi-conductor cables
US6630773B1 (en) 1999-12-15 2003-10-07 Shining Blick Enterprises Co., Ltd. Assembling structure for lamp string with fully enveloped bulbs
JP6179802B2 (ja) * 2013-07-02 2017-08-16 岩崎電気株式会社 高圧放電ランプ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2860274A (en) * 1955-07-21 1958-11-11 British Thomson Houston Co Ltd Electrical lamps
US2999180A (en) * 1955-09-07 1961-09-05 British Thomson Houston Co Ltd Electric lamps
CA642848A (en) * 1962-06-12 Pechy William Lamp base and terminal means therefor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5150261Y2 (enrdf_load_stackoverflow) * 1971-06-03 1976-12-03

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA642848A (en) * 1962-06-12 Pechy William Lamp base and terminal means therefor
US2860274A (en) * 1955-07-21 1958-11-11 British Thomson Houston Co Ltd Electrical lamps
US2999180A (en) * 1955-09-07 1961-09-05 British Thomson Houston Co Ltd Electric lamps

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028577A (en) * 1975-04-28 1977-06-07 Gte Sylvania Incorporated Electric lamp with insulating base
US4400646A (en) * 1981-03-09 1983-08-23 General Electric Company Shaped inlead wires in electric lamps

Also Published As

Publication number Publication date
FR2046572A5 (enrdf_load_stackoverflow) 1971-03-05
NL6906704A (enrdf_load_stackoverflow) 1970-11-04
JPS4814119B1 (enrdf_load_stackoverflow) 1973-05-02
DE2018702A1 (de) 1970-11-12
DE2018702C3 (de) 1980-03-27
GB1299985A (en) 1972-12-13
DE2018702B2 (de) 1979-07-19

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