WO2010086765A1 - Brûleur et procédé d'assemblage d'une lampe - Google Patents

Brûleur et procédé d'assemblage d'une lampe Download PDF

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Publication number
WO2010086765A1
WO2010086765A1 PCT/IB2010/050263 IB2010050263W WO2010086765A1 WO 2010086765 A1 WO2010086765 A1 WO 2010086765A1 IB 2010050263 W IB2010050263 W IB 2010050263W WO 2010086765 A1 WO2010086765 A1 WO 2010086765A1
Authority
WO
WIPO (PCT)
Prior art keywords
cap
reference element
burner
lamp
high performance
Prior art date
Application number
PCT/IB2010/050263
Other languages
English (en)
Inventor
Marcus Kubon
Juergen Flechsig
Hans-Joachim H. Unger
Alexander Peter
Original Assignee
Philips Intellectual Property & Standards Gmbh
Koninklijke Philips Electronics N. V.
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 Intellectual Property & Standards Gmbh, Koninklijke Philips Electronics N. V. filed Critical Philips Intellectual Property & Standards Gmbh
Publication of WO2010086765A1 publication Critical patent/WO2010086765A1/fr

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01KELECTRIC INCANDESCENT LAMPS
    • H01K1/00Details
    • H01K1/42Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp
    • H01K1/46Means 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
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/50Means forming part of the tube or lamps for the purpose of providing electrical connection to it
    • H01J5/54Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base
    • H01J5/56Shape of the separate part

Definitions

  • the invention relates to the field of burners, which may be used as light source in a lamp, particularly an automotive light like a headlight.
  • the invention further relates to method, by which a lamp comprising such kind of a burner can be assembled.
  • a lot of different types of burners for use in an automotive light are known which differ significantly in their design, so that for each type of a lamp different caps and sockets are necessary for connecting a burner of a specific standard into the lamp.
  • a high performance incandescent burner for a high performance lamp is known, which is clipped to a cap of a socket.
  • the burner of the high performance lamp standard comprises a bulb with a nearly spherical vessel connected to a tubular end.
  • the high performance incandescent burner comprises in comparison to a common incandescent lamp a significantly smaller vessel comprising a signifi- cantly smaller inner diameter.
  • the size of the vessel of the high performance incandescent burner is defined by a power per area ratio of at least 1.1 W/cm 2 , wherein existing high performance incandescent burners comprise a power per area ratio of at least 1.4 W/cm 2 , like the high performance incandescent burner known under the name "HiPer". Due to the high power per area ratio a good sealing of the tubular end is impor- tant. Hence, the tubular end is closed by a glass plug, which is fused to the bulb in a partially melted state of the tubular end of the bulb. In order to guarantee a good sealing the tubular end must comprise a specific minimum diameter. The fusing leads to a circumferential edge protruding from the tubular end.
  • the high performance incandescent burner is clipped to the cap of the socket via the protruding circumferential edge leading to a fast and facilitated connection without affecting the correct alignment of a light source of the burner with respect to the socket.
  • the burner of a halogen lamp have to be much smaller, so that a translucent envelope of the burner com- prises a high temperature at every place of the envelope. Due to the chemical halogen cycle inside the envelope the temperature of the envelope have to be such high that a deposition of tungsten on the envelope is prevented. For that reason the material of the envelope has to be close to the light source ensuring a high temperature of the envelope, which leads to a very small design of the burner. Due to the small design of the burner the envelope is provided with a pinch end, which renders an accurate connection to a cap of a socket for a lamp difficult, when a correct alignment of a light source should be ensured like in automotive applications.
  • a burner particularly halogen burner, comprising a light source for emitting light, a translucent envelope housing the light source, wherein the envelope comprises a pinch end, a holding element securely connected to the envelope at the pinch end and a reference element, to which the holding element is securely connected such that the light source is aligned in axial direction and radial direction with respect to the reference element in a predefined manner, wherein the reference element is adapted to be connected to a cap of a socket for a light, wherein the reference element comprises at least one protrusion for being received by at least one clip connector of the cap and/or a centering means for centering the reference element with respect to the cap, wherein the shape and the size of the protrusion and/or of the centering means are adapted for being connected to a cap adapted for receiving a radially protruding circumferential edge located at a tubular end of a bulb of a high performance incandescent burner, particularly for a high performance lamp.
  • the envelope of the burner comprises a small seized pinch end, it is possible to connect the burner like a larger seized high performance incandescent burner via the appropriate shaped and seized reference element by means of a clip connection and/or several kinds of centering.
  • the size of the vessel of the high performance incandescent burner is defined by a power per area ratio of at least 1.1 W/cm 2 , wherein existing high performance incandescent burners comprise a power per area ratio of at least 1.4 W/cm 2 , like the high performance incandescent burner known under the name "HiPer".
  • the specific minimum diameter of the tubular end is calculable defining the shape and size of the socked adapted for such kind of high performance incandescent burner, which in turn defines the shape and size of the protrusion and/or of the centering means of the burner according to the invention.
  • the reference element may comprise a radial protrusion with a length in radial direction comparable to the radial extension of the bulb of a high performance lamp. This leads to a clip connection on a large diameter, so that manufacturing tolerances of the protrusion have only a negligible effect to the correct alignment of the light source of the burner. Particularly the alignment can be performed without the socket, so that bulky pieces during the alignment are prevented.
  • the reference element provides in addition to the function of enabling an adjustment of the light source with reference to the reference element the function of an adapter enabling the use of a cap and/or of a socket adapted for the standard of high performance incandescent burner.
  • the burner according to the invention is suitable for lights, which demand an increased accuracy at low costs, for instance automotive lights like headlights, taillights, brake lights and the like. Since the identical designed cap can be used for a halogen burner with a pinch end as well as for a high performance incandescent burner with a tubular end the manufacturing costs for the cap and the socket can be reduced due to the effects of mass production.
  • the holding element, by which the pinch end of the envelope may be securely clamped, may be bonded or welded to the reference element, wherein during the inseparable connection of the holding element to the reference element the light source may be adjusted in radial direction and axial direction with respect to the reference element.
  • the holding element and the reference element are particularly made from a metal material for enabling a connection provided by laser welding.
  • the pinch end is particularly provided during the manufacturing process of the envelope by compressing at least one end of the envelope, which may be made from glass, particularly quartz glass.
  • the pinch end may be provided by heating and/or partially melting the envelope at the at least one end, par- ticularly by a rolling process. During the rolling process rolls rub with pressure onto the envelope at the intended pinch end until the envelope is heated. Leads are led within the envelope from the outside along the pinch end electrodes for applying voltage to the light source.
  • the cap, to which the reference element may be connected is molded into a plastic socket.
  • the reference element is adapted for being press-fitted to the cap, wherein the reference element is particularly elastically compressible in axial direction for providing a holding force in axial direction to the cap in assembled state, wherein the length of the reference element in axial direction is particularly chosen such that during assembling an elastic compression only is obtainable. Due to the press-fit connection a clearance between the reference element and the cap is prevented. A predefined alignment of the reference element with respect to the cap can be guaranteed leading to a predefined alignment of the light source with respect to the socket, which comprises the cap. Particularly a plastic deformation of the reference element is prevented, so that only an elastic compression of the reference element and/or the cap is obtainable during the assembling.
  • a release of the force applied to the reference element for slightly compressing the reference element in axial direction leads to the situation, that the reference element provides the holding force to the cap and particularly to the snap connector, wherein an automatically occurring homogenization of the holding force leads to a self-centering effect of the reference element with respect to the cap.
  • the reference element comprises a bottom plate and the bottom plate comprises the centering means in the form of a recess and/or a deepening and/or a heightening for coming into contact with a mainly correspondingly shaped centering element of the cap, particularly by press-fitting.
  • the reference element may be particularly connected to the cap by pressing via the connection of the centering means of the reference element to the centering element of the cap.
  • a holding force between the centering means of the reference element and the centering element of the cap is provided, which is particularly chosen such high, that the centering means is particularly securely fastened to the centering element.
  • the length of the reference element in axial direction is chosen such that in the assembled state the bottom plate of the reference element is in plane contact to the cap.
  • the reference element may be pressed to the cap until the bottom plate of the reference element comes into contact to a bottom of the cap. Due to the contact of the bottom plate to the bottom a further movement of the reference element with respect to the cap can be prevented.
  • an irreversible plastic deformation of the centering means and/or the centering element can be allowed without affecting the accurate adjustment of the light source, since the contact of the bottom plate to the bottom limits the amount of the deformation.
  • a secure connection between the centering means and the centering element can be provided.
  • the reference element comprises a contour protruding in radi- al direction with respect to the at least one clip connector of the cap such that the reference element is only mountable in a predefined alignment in circumferential direction.
  • the reference element may comprise a radially protruding nose adapted to be arranged between two clip connectors limiting the movability of the reference element with respect to the cap and particularly of the light source.
  • a bayonet coupl- ing can be provided. A predefined position of the light source with respect to the cap can be guaranteed even in circumferential direction.
  • the reference element comprises at least one at least partially surrounding reference ring for providing the protrusion
  • the reference ring comprises reference marks for align the light source with respect to the refer- ence element.
  • the reference ring may provide the protrusion for being connected to the clip connector of the cap.
  • the reference ring provides the additional function of providing an accurate connection in one piece. It is sufficient to adapt the reference ring in shape and size to the clip connector of the cap, which is intentionally adapted for being connected to a high performance incandescent burner.
  • the holding element is connected to the reference element inseparably, particularly by ultrasonic welding or laser welding.
  • a low number of fixing points, particularly three welding points, are sufficient to provide a secure connection for locking the accurate adjustment of the light source with respect to the reference element.
  • the invention further relates to a lamp, particularly for an automotive light, comprising a cap of a socket for a light and a burner, which may be designed as previously described, connected to the cap via the reference element, wherein the cap comprises at least one clip connector adapted for receiving a radially protruding circumferential edge located at a tubular end of a bulb of a high performance incandescent burner, particularly for a high performance lamp. It is sufficient to ensure a correct alignment of the light source with respect to the reference element, since the alignment of the reference element with respect to the cap adapted for a high performance incandescent burner is predefined by means of the protrusion and/or the centering means.
  • the reference element is partially pressed into the material of the cap.
  • the reference element may be connected to the cap by pressing particularly via the connection of the centering means of the reference element to the centering element of the cap.
  • a press-fit connection between the reference element and the cap provides a secure connection without affecting the accuracy of the adjustment of the light source.
  • the reference element is immobile in axial direction and in radial direction with respect to the cap.
  • a clearance in axial direction as well in radial direction between the reference element and the cap can be prevented, so that the position of the light source with respect to the cap cannot be changed.
  • the accuracy of the align- ment of the light source with respect to the cap cannot be affected.
  • a movement of the reference element in circumferential direction can be allowed, limited or also blocked.
  • the at least one clip connector blocks a movement of the reference element in axial direction and a centering element of the cap, which is mainly correspondingly shaped to the centering means of the reference element, blocks a movement of the reference element in radial direction.
  • the functions of blocking the movement of the reference ring in axial direction as well as in radial direction are distributed to two different pieces. This leads to a facilitated design of the clip connector and the centering element. Further the assembling can be facilitated, since the blocking in radial direction may occur independently from the blocking in axial direction.
  • the invention further relates to an automotive light, particularly headlight, positioning light, parking light, blinking light and/or rear light, comprising a lamp, which may be designed as previously described. It is sufficient to ensure a correct alignment of the light source with respect to the reference element, since the alignment of the refer- ence element with respect to the cap adapted for a high performance incandescent burner is predefined by means of the protrusion and/or the centering means. This provides a fast and facilitated connection of the burner into the automotive light without affecting the correct alignment of the light source of the burner with respect to the socket.
  • the automotive light may comprise a lens system and/or a reflection system for guiding the light emitted by the light source of the burner. Particularly the cap, to which the reference element is connected, is molded into a plastic socket.
  • the invention further relates to a use of a cap of a socket, particularly for an automotive light, wherein the cap comprises at least one clip connector adapted for receiving a radially protruding circumferential edge located at a tubular end of a bulb of a high performance incandescent burner, particularly for a high performance lamp, for receiving a burner, which may be designed as previously described, and/or for assembling a lamp, which may be designed as previously described. Since the identical designed cap can be used for a halogen burner with a pinch end as well as for a high performance incandescent burner with a tubular end the manufacturing costs for the cap and the socket can be reduced due to the effects of mass production.
  • the invention further relates to a method for assembling a lamp, which particularly may be designed as previously described, comprising the steps of:
  • a burner which may be designed as previously described, wherein the holding element is securely connected to the reference element such that the light source is aligned in axial direction and radial direction with respect to the reference element in a predefined manner by a previous alignment step and
  • the burner is assembled into an automotive light.
  • FIG. 1 is a schematic exploded side view of a high performance lamp
  • FIG. 2 is a schematic side view of the high performance lamp of FIG. 1 in assembled state
  • FIG. 3 is a schematic exploded side view of a halogen lamp and FIG. 4 is a schematic sided view of the halogen lamp of FIG. 3 in assem- bled state.
  • the high performance lamp 10 as illustrated in FIG. 1 and FIG. 2 comprises a bulb 12.
  • the bulb 12 comprises a mainly spherical vessel 14, which is one-piece with a tubular end 16.
  • the tubular end is closed by a glass plug 18, through which connectors 20 are led for applying voltage to a light source 22, which is in the illustrated embodiment a filament comprising mainly tungsten.
  • a high performance incandescent burner 26 of the high performance lamp 10 is defined.
  • a circumferential edge 24 is provided.
  • the high performance incandescent burner 26 can be connected to a cap 28 of a not illustrated socket.
  • the high performance incandescent burner 26 is clipped to the cap 28 of the socket via the protruding circumferential edge 24 by means of four clip connectors 30 leading to a fast and facilitated connection without affecting the correct alignment of the light source 22 with respect to the socket.
  • FIG. 2 the halogen lamp 32 according to the invention as illustrated in FIG. 3 and FIG. 4 comprises a completely different design.
  • the halogen lamp 32 comprises a burner 34.
  • the burner 34 comprises a light source 22, which is in the illustrated embodiment a filament comprising mainly tungsten, and a translucent envelope 36, which is located near to the light source 22 for providing a high temperature of the envelope 36 during operation of the light source 22.
  • the envelope 36 comprises a pinch end 38, through which connectors 20 are led for applying voltage to the light source 22.
  • the pinch end 38 is securely connected to a holding element 40, which is part of the burner 34. For instance the pinch end 38 is clamped via its side faces into corresponding recesses of the holding element 40.
  • the burner 34 further comprises a reference element 42, to which the holding element 40 can be securely connected, for instance by means of laser welding or the like.
  • the reference element 42 may comprise not illustrated reference marks for adjusting the light source 22 with respect to the reference element in radial direction 44 and axial direction 46 by means of optical test methods prior or during the connecting of the hold- ing element 40 to the reference element 42.
  • the reference marks particularly point in axial direction upwards towards a distal of the envelope 36.
  • the reference element 42 may comprise an at least partially surrounding reference ring 48, where the reference marks may be provided particularly on an upper surface pointing to the distal end of the envelope 36.
  • a protrusion is provided, wherein the protrusion is particularly adapted in shape and size to the surrounding edge 24 of the high performance lamp 10 illustrated in FIG. 1 and FIG. 2. Due to the chosen shape and size of the edge provided by the reference ring 48 the burner 34 can be clipped to a cap 28, which is identical shaped like the cap 28 illu- strated in FIG. 1 and FIG. 2. The edge 48 of the burner 34 can be received by the clip connectors 30 of the cap.
  • the reference element 42 may comprise a bottom plate 50 with a centering means, which is in the illustrated embodiment a deepening 52 for press-fitting to a corresponding not illustrated centering element of the cap 28 particularly by pressing.
  • the reference element 42 can be elastically compressed in axial direction 46 during assembling, so that the protruding edge 48 may be connected to the clip connectors 30 with a holding force in axial direction 46.
  • a slight elastic compression of the reference element 42 in the state as illustrated in FIG. 4 leads automatically to a pressing of the centering means 52 to the cap 28 as well as to a connection of the edge 48 to the four clip connectors 30 of the cap.

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

Pour l'assemblage d'une lampe (32), un brûleur, en particulier un brûleur halogène (34), comprend une source de lumière (22) destinée à émettre de la lumière, une enveloppe transparente (36) logeant la source de lumière (22), l'enveloppe (36) comprenant une extrémité de pincement (38), un élément de support (40) relié de manière sûre à l'enveloppe (36) par l'extrémité de pincement (38) et un élément de référence (42), auquel l'élément de support (40) est relié de manière sûre, de sorte que la source de lumière (22) soit alignée dans la direction axiale (46) et la direction radiale (44) par rapport à l'élément de référence (42) d'une manière prédéfinie. L'élément de référence (42) est conçu pour être relié à une coiffe (28) d'une douille pour une lumière et comprend au moins une saillie (48) destinée à être logée dans au moins un connecteur à clip (30) de la coiffe (28) et/ou un moyen de centrage (52) destiné à centrer l'élément de référence (42) par rapport à la coiffe (28), la forme et la dimension de la protubérance (48) et/ou du moyen de centrage (52) permettant la connexion à une coiffe (28) appropriée pour recevoir un bord circonférentiel (24) faisant saillie radialement situé à une extrémité tubulaire (16) d'une ampoule (12) d'un brûleur à incandescence à haute performance (26), en particulier pour une lampe à haute performance (10). Il suffit de garantir un alignement correct de la source de lumière (22) par rapport à l'élément de référence (42), étant donné que l'alignement de l'élément de référence (42) par rapport à la coiffe (28) convenant pour un brûleur à incandescence à haute performance (26) est prédéfini au moyen de la protubérance (48) et/ou du moyen de centrage (52). Le brûleur (34) peut ainsi être connecté simplement et rapidement à la coiffe (28) sans altérer l'alignement correct de la source de lumière (22) du brûleur (34) par rapport à la douille.
PCT/IB2010/050263 2009-01-28 2010-01-21 Brûleur et procédé d'assemblage d'une lampe WO2010086765A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP09151543.7 2009-01-28
EP09151543 2009-01-28

Publications (1)

Publication Number Publication Date
WO2010086765A1 true WO2010086765A1 (fr) 2010-08-05

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Application Number Title Priority Date Filing Date
PCT/IB2010/050263 WO2010086765A1 (fr) 2009-01-28 2010-01-21 Brûleur et procédé d'assemblage d'une lampe

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4219870A (en) * 1978-07-07 1980-08-26 Gte Sylvania Incorporated Front loading projection unit
US4567397A (en) * 1982-06-05 1986-01-28 U.S. Philips Corporation Electric lamp having a light source aligned to a cap
US4569006A (en) * 1985-01-15 1986-02-04 Gte Products Corporation Replaceable lamp unit and automobile headlight utilizing same
US4769574A (en) 1986-08-04 1988-09-06 Koito Seisakusho Co., Ltd. Incandescent lamp with a metal coupling to a plastic lamp base for automotive headlamp and like lighting applications
US4864183A (en) * 1988-03-24 1989-09-05 Koito Seisakusho Co., Ltd. Electric lamp assembly having improved mechanical connection between light bulb and molded plastic holder body
EP0860651A2 (fr) * 1997-02-21 1998-08-26 Osram Sylvania Inc. Système de projecteur pour véhicule
WO2007105144A1 (fr) 2006-03-10 2007-09-20 Koninklijke Philips Electronics N.V. Feu d'automobile équipé d'une ampoule verrouillée au culot de la lampe

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4219870A (en) * 1978-07-07 1980-08-26 Gte Sylvania Incorporated Front loading projection unit
US4567397A (en) * 1982-06-05 1986-01-28 U.S. Philips Corporation Electric lamp having a light source aligned to a cap
US4569006A (en) * 1985-01-15 1986-02-04 Gte Products Corporation Replaceable lamp unit and automobile headlight utilizing same
US4769574A (en) 1986-08-04 1988-09-06 Koito Seisakusho Co., Ltd. Incandescent lamp with a metal coupling to a plastic lamp base for automotive headlamp and like lighting applications
US4864183A (en) * 1988-03-24 1989-09-05 Koito Seisakusho Co., Ltd. Electric lamp assembly having improved mechanical connection between light bulb and molded plastic holder body
EP0860651A2 (fr) * 1997-02-21 1998-08-26 Osram Sylvania Inc. Système de projecteur pour véhicule
WO2007105144A1 (fr) 2006-03-10 2007-09-20 Koninklijke Philips Electronics N.V. Feu d'automobile équipé d'une ampoule verrouillée au culot de la lampe

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