WO2011036602A1 - Dispositif de connexion pour sources d'éclairage et procédé de réalisation de celui-ci - Google Patents

Dispositif de connexion pour sources d'éclairage et procédé de réalisation de celui-ci Download PDF

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Publication number
WO2011036602A1
WO2011036602A1 PCT/IB2010/054132 IB2010054132W WO2011036602A1 WO 2011036602 A1 WO2011036602 A1 WO 2011036602A1 IB 2010054132 W IB2010054132 W IB 2010054132W WO 2011036602 A1 WO2011036602 A1 WO 2011036602A1
Authority
WO
WIPO (PCT)
Prior art keywords
laminar
contact
printed circuit
board
circuit board
Prior art date
Application number
PCT/IB2010/054132
Other languages
English (en)
Inventor
Daniele Bortolato
Maurizio Campobasso
Daniele Nascimben
Raffaele Piva
Original Assignee
Osram Gesellschaft mit beschränkter Haftung
Osram S.P.A. - Societa' Riunite Osram Edison Clerici
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 Osram Gesellschaft mit beschränkter Haftung, Osram S.P.A. - Societa' Riunite Osram Edison Clerici filed Critical Osram Gesellschaft mit beschränkter Haftung
Publication of WO2011036602A1 publication Critical patent/WO2011036602A1/fr

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Classifications

    • 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
    • H01J5/62—Connection of wires protruding from the vessel to connectors carried by the separate part
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/56—One or more circuit elements structurally associated with the lamp

Definitions

  • This disclosure relates to connection devices for light sources.
  • This disclosure was devised with specific attention paid to its possible application for connecting a high temperature light source (for example a halogen lamp) to the related power supply circuit (for example an electronic transformer or "ballast").
  • a high temperature light source for example a halogen lamp
  • the related power supply circuit for example an electronic transformer or "ballast"
  • a halogen lamp is an example of a high temperature lighting source, comprising a helix (spiral), coil or another shaped metal wire structure arranged in a glass bulb and adapted for a flow of high intensity current therethrough .
  • the spiral, coil or structure making up the lighting body itself is incandescent, and can therefore emit a considerable amount of heat, by irradiation, by conduction and by convection .
  • the related power supply circuit e.g. an electronic converter
  • the related power supply circuit is on the contrary adapted to operate at a lower temperature. Because of the generally high intensity values of the current supplied from the electronic transformer to the halogen lamp, it is important to be able to ensure a high electrical conductivity in the connection between the light source and the related power supply circuit, especially considering the high thermal shock undergone by the integrated lighting device (i.e. the assembly of lighting source and related power supply circuit) during its whole lifetime. The achievement of this goal should be compatible with the normal industrial production processes of such lighting devices.
  • the object of the invention is to provide a solution adapted to overcome the intrinsic drawbacks of the known solution. According to the invention, such an object is achieved through a connection device having the features set forth in the claims that follow.
  • the invention also concerns a related realizing method.
  • the claims are an integral part of the technical teaching of the invention provided herein.
  • a metallic connection is provided that has an extremely low resistance and simultaneously a high mechanical stability during the manufacturing process.
  • a flat metal plate or strip is used, e.g. of a copper alloy.
  • FIG. 1 shows a lighting device
  • FIG. 2 shows a perspective view of a connection device according to an embodiment
  • FIGS 3 to 6 show subsequent steps of realization of an embodiment.
  • FIG. 1 schematically shows a lighting device 10 comprising :
  • the lighting source 12 can include a lighting body (or "burner") comprising for example a halogen lamp 120 adapted to reach, during operation, temperatures of the order of 200°C.
  • a lighting body or "burner”
  • the lamp 120 is normally arranged within a bulb 122 of a transparent material (e.g. glass), in such a way as not to hinder the light flow diffusion and on the other hand to avoid an undesirable casual contact with the lighting body 120 at operating temperature .
  • the presently considered embodiment is representative of an electrical connection device adapted to transfer towards a high temperature lighting source, for example towards the halogen lamp 120, from a power supply circuit (for example an electronic transformer) , a current of such an intensity as to allow the operation of the lighting source, making this source incandescent.
  • a power supply circuit for example an electronic transformer
  • PCB printed circuit board
  • the lighting device may comprise two such terminations 100
  • each rheophore 100 may have an overall semicircular shape, so that both rheophores can jointly form a disk-like structure adapted to support the lamp 120 at the bottom of the protection bulb 122 (which in the present case has a spherical shape and is only partially visible in Figure 2) .
  • the criteria followed can be better inferred from two Patent Applications filed on the same date by the same Applicants.
  • the specific shape of the presently considered rheophores 100 has in any case a merely exemplary nature .
  • the board (PCB) 142 is mounted in such a way that the electrical/electronic components 144 mounted thereon are arranged on the side of the board 142 which is opposed to the lamp 120, i.e. on the side opposed to where, in Figure 2, one of the power supply rheophores 100 is visible.
  • the board 142 can perform the function of shielding and protecting the circuits 12 from the heat coming from the lighting source.
  • the power supply circuit 144 mounted on the board 142 and the lamp 120 are connected with each other through a laminar contact 16, consisting of an electrically conductive plate or strip (for example of a metal such as a copper alloy) , extending from the power supply circuit 142, 144 towards the lighting source 120 (i.e. towards the rheophore 10) .
  • the proximal end 16a of the contact 16 can be connected to the board 142 (more precisely, to the circuits thereon) through soldering (brazing) , for example with the technology known as wave soldering, which is currently employed in printed circuit manufacturing .
  • the distal end 16b of the contact 16 (the terms “proximal” and “distal” refer to the position with respect to the board 142) can be bent over itself in a general C shape, so as to promote an elastically biased contact against shaped portions - e.g. against tab 100b or against an otherwise protruding portion 100c of the rheophore 100 - without having to resort to a soldered connection.
  • the connection of the distal end 16b of the contact 16 with the rheophores of the lamp 120 can anyway involve a soldering as well, for example a voltaic-arc soldering.
  • the elastically biased connection favors the possibility of inserting the light source simply by snapping it into the mounting structure (for example into the upper part of the housing of the power supply device 14, of which the junction element 20 with the bulb 122 is visible) , so as to facilitate both the first insertion and the possible substitution of the lighting source.
  • the plate or strip 16 can be obtained from a metal sheet of bigger size (for example from a web N of copper alloy) , for example through punching, so as to obtain a component having, beside an excellent electrical conductivity, a remarkable mechanical stability as well, although it is generally a flexible structure.
  • a metal sheet of bigger size for example from a web N of copper alloy
  • resorting to punching from a web-like structure N offers a further advantage because, after punching, the individual elements or contacts 16 can still be kept united in the web, as can be clearly seen in Figure 3, avoiding their separation.
  • each contact 16 is therefore adapted to be inserted into the printed circuit board 142, as schematically depicted in Figures 4a and 4b, showing the board 142 with the circuits 144 mounted thereon, after mounting contact 16, respectively in side view and in end view.
  • Contact 16 may be simply inserted into a hole of the board 142 corresponding to one of the metal coated contacts of the same, by an operation adapted to be performed in a completely automated way.
  • the following step consists in the electrical connection, which may take place either by a wave soldering method (for example in a tin bath, with a technology which is known in itself and schematically shown at W in Figure 5), or by hand iron soldering.
  • a wave soldering method for example in a tin bath, with a technology which is known in itself and schematically shown at W in Figure 5
  • hand iron soldering for example in a tin bath, with a technology which is known in itself and schematically shown at W in Figure 5
  • the contact 16 can undergo, beside a forming by punching from a web N, various bending and shaping operations.
  • the final achievable result shows a level of stability, concerning the connection to the board 142 as well, which is remarkably higher than obtained with a single or multiple core wire. Moreover, this production process can be completely automated.

Landscapes

  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

Un dispositif de connexion électrique entre une source d'éclairage (120) et un circuit d'alimentation électrique (14) monté sur une carte de circuits imprimés (142) comprend un contact électrique laminaire (16) s'étendant à partir de la carte de circuits imprimés (142) en direction de la source d'éclairage (120).
PCT/IB2010/054132 2009-09-23 2010-09-14 Dispositif de connexion pour sources d'éclairage et procédé de réalisation de celui-ci WO2011036602A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO2009A000727 2009-09-23
ITTO20090727 2009-09-23

Publications (1)

Publication Number Publication Date
WO2011036602A1 true WO2011036602A1 (fr) 2011-03-31

Family

ID=41716195

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2010/054132 WO2011036602A1 (fr) 2009-09-23 2010-09-14 Dispositif de connexion pour sources d'éclairage et procédé de réalisation de celui-ci

Country Status (1)

Country Link
WO (1) WO2011036602A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0349083A1 (fr) * 1988-07-01 1990-01-03 Koninklijke Philips Electronics N.V. Lampe électrique
EP0664556A2 (fr) * 1994-01-25 1995-07-26 TUNGSRAM Részvénytársaság Lampe à décharge à culottage d'un seul côté
US5629581A (en) * 1995-12-07 1997-05-13 General Electric Company Lamp cathode-to-ballast interconnect and method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0349083A1 (fr) * 1988-07-01 1990-01-03 Koninklijke Philips Electronics N.V. Lampe électrique
EP0664556A2 (fr) * 1994-01-25 1995-07-26 TUNGSRAM Részvénytársaság Lampe à décharge à culottage d'un seul côté
US5629581A (en) * 1995-12-07 1997-05-13 General Electric Company Lamp cathode-to-ballast interconnect and method

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