EP0451908A1 - Elektrische Lampe - Google Patents

Elektrische Lampe Download PDF

Info

Publication number
EP0451908A1
EP0451908A1 EP91200794A EP91200794A EP0451908A1 EP 0451908 A1 EP0451908 A1 EP 0451908A1 EP 91200794 A EP91200794 A EP 91200794A EP 91200794 A EP91200794 A EP 91200794A EP 0451908 A1 EP0451908 A1 EP 0451908A1
Authority
EP
European Patent Office
Prior art keywords
lamp
insulator body
contact elements
projections
current supply
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Withdrawn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
EP91200794A
Other languages
English (en)
French (fr)
Inventor
Livio Borgis
Marco Vicenzo Pietro Piacibello
Cornelis Penning
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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 Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of EP0451908A1 publication Critical patent/EP0451908A1/de
Withdrawn legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/05Two-pole devices
    • H01R33/46Two-pole devices for bayonet type base

Definitions

  • the invention relates to an electric lamp provided with
  • Such an electric lamp is known from DE 462.796.
  • the insulator body is fixed with its portion projecting from the stemtube in a threaded metal shell, forming a first contact element, and carries at an end surface a metal plate by way of a second contact element.
  • the insulator body thus forms the geometry of an Edison lamp cap in conjunction with these contact elements.
  • the insulator body consists of glass or ceramic material and is secured in the stemtube with cement.
  • the object of the construction of this known lamp is to render possible the use of a smaller lamp cap than in the case in which a lamp cap is used which grips around the end portion of the lamp vessel.
  • Another object of this construction is to provide a safe lamp in which no live metal parts can be touched.
  • the construction does not offer this safety since the lamp can be inserted in a lampholder whose screwthread is under electrical tension, thus rendering the threaded metal shell at the lamp live.
  • one current supply conductor runs along the outside of the insulator body towards the threaded shell.
  • the construction of the known lamp is expensive, also because the lamp requires an expensive lampholder and inserting of the lamp in the lampholder and mounting and connecting the lampholder in the appliance requires much time.
  • the invention has for its object to provide an electric lamp of the kind described in the opening paragraph which, inter alia, is of a simple, easily manufactured construction and which can be easily inserted in a holder.
  • the insulator body has, outside the stemtube, first diametrically opposed, radial projections which carry respective contact elements and second diametrically opposed radial projections closer to the lamp vessel than the first projections, the two current supply conductors extending through the longitudinal cavity to the contact elements.
  • the lamp according to the invention is of a simple construction and can be easily inserted in a holder.
  • This holder may consist of a wall, for example a wall of an electrical appliance, provided with an opening which just allows the first projections to pass. If the lamp is then rotated about the longitudinal direction of the insulator body, the said wall can be included between the first and the second projections, so that the lamp is securely held.
  • the lamp is safe to touch since the current supply conductors run through the longitudinal cavity.
  • the contact elements moreover, do not come into contact with contact members until behind the wall of a holder.
  • the holder may be provided with contact members which come into contact with respective contact elements when the lamp is inserted in the holder and rotated about the longitudinal direction of the insulator body.
  • An attractive aspect of the lamp accordinging to the invention is that the lamp vessel and the stemtube fused thereto as well as the other parts present in the lamp vessel, such as the electric element, current supply conductors and possible additional mounting means for the electric element, are allowed to be of a conventional shape and construction. This means that the lamp can be manufactured on conventional machines and lamps manufactured in this way can be given conventional lamp caps, as required, for applications in which such a conventional lamp cap is required.
  • the contact elements are fixed in a cavity in the first projections. They are then securely anchored to the insulator body.
  • the contact elements may be included in the cavity with clamping fit and/or be fixed in the cavities by a deformation of a portion of said elements.
  • the contact elements For fast and easy mounting and for a reliable electrical connection between the current supply conductors and the contact elements it is favourable for the contact elements to have a split portion which forms a piercing contact with a current supply conductor. The current supply conductor is then held clamped in by that split portion.
  • the electrical resistance of such a connection is very low and to a high degree independent of corrosive influences.
  • the second projections have a position which is rotated through 90 o relative to the first projections about the longitudinal direction of the insulator body.
  • the second projections together form a continuous flange around the insulator body. Such a flange is capable of completely covering the opening in a wall through which the first projections have been inserted. It is thus made impossible to touch contact elements with a thin object through the opening of the holder when a lamp has been inserted into a holder.
  • the insulator body has a longitudinal partition wall in the central cavity, near its end facing away from the lamp vessel. It is favourable if the partition wall becomes thicker towards that end. The current supply conductors are then easily led to the exterior in a defined spot in order to be connected to the contact elements when the insulator body is mounted.
  • the insulator body may be made of glass, ceramic material, or synthetic resin, for example from thermoplastic synthetic resin such as polyphenylene sulphide, polyether imide, polyether sulphon.
  • the insulator body may be fixed in the stemtube in that the current supply conductors are connected to the contact elements with mechanical tension.
  • lamp cement or a synthetic resin may be used, such as, for example, silicone resin, epoxy resin, or the insulator body itself may adhere to the stemtube.
  • the electric lamp has a translucent lamp vessel 1 with an end portion 2 where a stemtube 3 fused to the lamp vessel projects into the lamp vessel.
  • An electric element 4 an incandescent body in the Figure, but in an alternative lamp, for example, a pair of electrodes, is positioned in the lamp vessel.
  • Contact elements 8 are fastened to the insulator body 5.
  • Current supply conductors 9 are connected to the electric element 4, extend to respective contact elements 8, and are fastened thereto. At least one of these current supply conductors 9 runs through the longitudinal cavity 7.
  • the insulator body 5 has, outside the stemtube 3, first diametrically opposed radial projections 10 which carry respective contact elements 8 and second, diametrically opposed radial projections 11 closer to the lamp vessel 1 than the first projections 10. Both current supply conductors 9 extend through the longitudinal cavity 7 to the contact elements 8.
  • the contact elements 8 are fixed in a cavity 13 in the first projections 10 (see also Figs. 2-4).
  • a longitudinal partition wall 12 is present in the longitudinal cavity 7 near the end facing away from the lamp vessel 1, which wall becomes thicker towards this end.
  • the second projections 11 together form a continuous flange around the insulator body.
  • insulator body 25 has second projections 31 which have a position rotated through 90 o relative to the projections 30.
  • the projections 30 have cavities 33 for contact elements 28, 28'.
  • a current supply conductor 29 issues in straight shape from the insulator body 25 to the exterior.
  • Contact element 28' can be passed into a cavity 33.
  • a tag 34' on the element may be bent after insertion by way of extra fixation (compare Fig. 1).
  • the current supply conductor 29 may now be radially bent and pulled into the split portion 35' of the contact element in order to be clamped in there.
  • a lamp having two such contact elements 28' is suitable for use in a holder as shown in Fig. 5.
  • Fig. 2 also shows an embodiment which is provided with a contact element 28 which is suitable for being connected to a cable 28a e.g. by welding or soldering.
  • the portion of contact member 28 included in the cavity 33 is identical to contact member 28'.
  • the electrical supply can be connected to a supply source at a distance from the location where the lamp is mechanically held.
  • Figs. 3 and 4 again, two contact elements of different kinds are shown each time.
  • the lamps of Figs. 3 and 4 are obtained in that first the current supply conductors 49, 69 are put in their positions in the cavities 53, 73, respectively, by bending them, followed by the contact elements 48, 48' and 68, 68', respectively.
  • the electrical connections between the current supply conductors and the contact elements are effected during that same operation.
  • the holder has a housing 80 with a wall 81 comprising an opening 82 for allowing the first projections 10 and the contact elements 8 of the lamp of Fig. 1 to pass.
  • the housing 80 contains contact members 83 which can make contact with respective contact elements 8 from Fig. 1 and which also form insert contacts for cables 84 extending to an electrical supply.
  • the housing comprises a stop 85 against which a projection 10 (Fig. 1) is checked in the final position of the lamp, and an elevation 86 over which a projection 10 is rotated with friction when the lamp is inserted in order to fix the lamp in its final position.
  • Hooks 87 serve to fasten the holder to a wall having openings designed for these hooks.
  • the housing may be closed with a wall through which cables 84 are passed.
  • the holder shown has a housing 90 with mounting hooks 97 and an elevation 96 analogous to 86 in Fig. 5.
  • a lamp having an insulator body 25 of Fig. 2 is inserted in the holder. Cables 28a soldered to the contact elements 28 connect the lamp to a supply source.
  • the holder may alternatively consist of a flat wall 91 provided with an opening for accommodating the insulator body, possibly provided with fastening means, such as hooks 97, and stamped or cast elevations serving as stops or fixation means for the lamp.

Landscapes

  • Fastening Of Light Sources Or Lamp Holders (AREA)
EP91200794A 1990-04-09 1991-04-05 Elektrische Lampe Withdrawn EP0451908A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9000821 1990-04-09
NL9000821 1990-04-09

Publications (1)

Publication Number Publication Date
EP0451908A1 true EP0451908A1 (de) 1991-10-16

Family

ID=19856887

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91200794A Withdrawn EP0451908A1 (de) 1990-04-09 1991-04-05 Elektrische Lampe

Country Status (3)

Country Link
EP (1) EP0451908A1 (de)
JP (1) JPH04230952A (de)
HU (1) HUT57476A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001071772A1 (en) * 2000-03-22 2001-09-27 Koninklijke Philips Electronics N.V. Electric lamp
WO2001071771A1 (en) * 2000-03-22 2001-09-27 Koninklijke Philips Electronics N.V. Electric lamp

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR648062A (fr) * 1927-02-04 1928-12-05 Osa Participations Ind Lampe électrique à incandescence
FR1070274A (fr) * 1952-02-04 1954-07-21 Philips Nv Lampe électrique
US4468585A (en) * 1982-03-18 1984-08-28 Gte Products Corporation Wedge base lamp socket

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR648062A (fr) * 1927-02-04 1928-12-05 Osa Participations Ind Lampe électrique à incandescence
FR1070274A (fr) * 1952-02-04 1954-07-21 Philips Nv Lampe électrique
US4468585A (en) * 1982-03-18 1984-08-28 Gte Products Corporation Wedge base lamp socket

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001071772A1 (en) * 2000-03-22 2001-09-27 Koninklijke Philips Electronics N.V. Electric lamp
WO2001071771A1 (en) * 2000-03-22 2001-09-27 Koninklijke Philips Electronics N.V. Electric lamp

Also Published As

Publication number Publication date
JPH04230952A (ja) 1992-08-19
HU911123D0 (en) 1991-10-28
HUT57476A (en) 1991-11-28

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Effective date: 19920417