EP1286384A1 - Lampe mit explosionssicherer Vorrichtung - Google Patents

Lampe mit explosionssicherer Vorrichtung Download PDF

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Publication number
EP1286384A1
EP1286384A1 EP02078423A EP02078423A EP1286384A1 EP 1286384 A1 EP1286384 A1 EP 1286384A1 EP 02078423 A EP02078423 A EP 02078423A EP 02078423 A EP02078423 A EP 02078423A EP 1286384 A1 EP1286384 A1 EP 1286384A1
Authority
EP
European Patent Office
Prior art keywords
filament
lamp
metal
support
axis
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Withdrawn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
EP02078423A
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English (en)
French (fr)
Inventor
Jacky Société Civile S.P.I.D. Marchand
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
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of EP1286384A1 publication Critical patent/EP1286384A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/62—One or more circuit elements structurally associated with the lamp
    • H01K1/70—One or more circuit elements structurally associated with the lamp with built-in short-circuiting device, e.g. for serially connected lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/18—Mountings or supports for the incandescent body

Definitions

  • the invention relates to an incandescent electric lamp comprising a bulb having an axis of revolution, a first and a second conducting wire intended for a current supply of said lamp, a filament having windings arranged in a spiral around a parallel axis of revolution. to the axis of revolution of said bulb and having a first and a second end, the first end of said filament being connected to the first conductive wire by means of a first metal tab, and a metal support having a first and a second end, the first end of said metal support being connected to the second conductive wire by means of a second metal tab, the second end of said metal support being connected to the second end of said filament.
  • a lamp finds application, for example, in a heating system dedicated to the manufacture of semiconductor components.
  • Such a lamp is described in US Patent 3,403,280 issued on 24 September 1968.
  • One of the aims of the invention disclosed in this patent is to ensure positioning of the filament so that the axis of rotation of the windings of the filament is substantially coincident with the axis of rotation of the bulb.
  • the axis of rotation of the windings of the filament is generally horizontal, i.e. perpendicular to a weight vector filament.
  • such a lamp is often used to dissipate a great power, for example a few thousand Watts. Under such conditions, the filament reaches a relatively high temperature when it is traversed by a current.
  • the filament Under the effect of the high temperature and its weight, the filament has tendency to deform mechanically by developing a downward curvature, that is, the windings of the filament collapse, the collapse of a winding being all the higher as the winding is located in an area filament center.
  • this subsidence is all the more important as the filament has a long operating life. So when the lamp has operated for a relatively long time, the subsidence may be such that the filament comes into contact with the bulb, which can cause piercing or exploding the bulb, the temperature of the filament being higher than the melting point of the bulb generally consisting of quartz.
  • such lamps can be used, for example, in manufacturing of semiconductors. An explosion is therefore harmful, because quartz debris can then pollute the semiconductors.
  • An object of the invention is to propose an anti-explosion device for an incandescent lamp.
  • an incandescent electric lamp as defined in the opening paragraph is characterized in that it includes a metal reinforcement in electrical contact with one of the ends or one of the windings of said filament and comprising a substantially rectilinear part parallel to the axis of revolution of said filament and located below said filament when the lamp is in normal operating conditions.
  • the lamp is characterized in that said metal frame is linked to the first metal tab.
  • the metal frame can be a simple straight rod welded to the metal tab, which makes such a frame metal particularly simple to manufacture and install in the lamp.
  • the lamp is characterized in that said metal frame is linked to the support metallic.
  • the metal support can itself play a role of metal reinforcement responsible for the short circuit causing a rupture of the filament. Thus, the number of parts necessary for the manufacture of the lamp is reduced.
  • the lamp is characterized in that that it further comprises at least one intermediate support attached to a winding of said filament.
  • the intermediate support (s) attached to the filament reduce sagging and thus delay contact between the filament and the metallic reinforcement, which increases the time during which the lamp can work.
  • the lamp is characterized in that the intermediate support (s) are located at the above the filament when the lamp is in its normal conditions of operation.
  • the intermediate support (s) are located at the above the filament when the lamp is in its normal conditions of operation.
  • the lamp is characterized in that said metal frame is linked to one of the at least one intermediate support.
  • one of the supports intermediaries can itself play the role of the metal frame, which reduces the number of parts required to manufacture such a lamp.
  • FIG. 1a illustrates a lamp according to a first particular embodiment of the invention.
  • a lamp comprises a bulb 100 having an axis of revolution 102, a first conducting wire 103, a second conducting wire 104, a filament 105 comprising a first end 105a and a second end 105b, a first metallic tab 106, a second metallic tab 107, a metal support 108 comprising a first end 108a and a second end 108b, and a metal frame 109.
  • the filament 105 comprises eight windings A to H.
  • Such a lamp can also include a pinch seal 101 as well as a bridge 110 in insulating material, being able to hold certain elements of the lamp in position, such as the filament 105, the metal support 108 and the metal frame 109.
  • the first end 105a of the filament 105 is connected to the first conducting wire 103 thanks to the first metal tab 106.
  • the metal tabs 106 and 107 represent means for electrically connecting elements, such as the first conducting wire 103 and the filament 105.
  • Said tabs metal 106 and 107 may be a metal plate on which the elements are welded. They can also be welding points, that is to say that the elements to be electrically connected are directly welded to each other.
  • the second end 105b of the filament 105 is connected to the second end 108b of the metal support 108 and the first end 108a of the metal support 108 is connected to the second conductive wire 104 through the second metal tab 107.
  • the filament 105 and the support metallic 108 form a current circuit.
  • the current arrives through the second conductive wire 104, passes through the metal support 108 then, in order, the windings A, B, C, D, E, F, G and H and exits through the first conductive wire 103.
  • this current crosses the filament 105, it causes, by Joule effect, a heating of the filament, which then becomes a source of light.
  • the metal frame 109 is welded to the first metal tab 106 and is therefore in electrical contact with the first end 105a of the filament 105, also welded to this tab.
  • an object A and an object B are in electrical contact it is meant that the object A and the object B are at the same electrical potential.
  • Figure 1b shows a section of the lamp of Figure la according to a YY axis.
  • the metal support 108 is located outside a plane formed by the axis of revolution 102 and the metal frame 109, in order to avoid any contact between windings of the filament 105 and the metal support 108, when the filament 105 sags.
  • Figure 1c helps understand the role of the metal frame 109.
  • one of the windings for example the winding E
  • the current arrives via the second conducting wire 104, crosses the support metallic 108 then, in order, the windings A, B, C, D and then borrows the least resistive path possible, i.e. the metal reinforcement 109, for finally come out through the first conducting wire 103.
  • the windings E, F, G and H are short-circuited. It follows an increase in a current intensity in the windings A, B, C and D, which causes sufficiently intense heating to cause rupture of the filament 105.
  • FIG. 2a illustrates a lamp according to a second embodiment particular of the invention.
  • the metal frame is linked to the metal support 108.
  • linked it is meant that the armature metal can be a metal part welded or attached to the metal support 108, or that the metal frame can be an integral part of the support metallic, that is to say that the metallic support 108 itself plays the role of the metal frame 109.
  • the metal support 108 has a straight part located below the filament 105. It thus plays the role of the metal frame 109 of FIG. 1a.
  • the metal support 108 has a hook 108c, as it is indicated in Figure 2b, which is a sectional view along the axis YY.
  • Figure 2c makes it possible to understand how such a metallic support 108 plays the role of a metal reinforcement responsible for the short circuit resulting in rupture of the filament.
  • the current arrives via the second conducting wire 104, passes through the metal support 108 up to this point of contact P, then crosses the windings E, F, G and H, to finally come out through the first conducting wire 103.
  • the windings A, B, C and D are short-circuited and, for reasons identical to those described in the description of Figure 1c, the filament breaks.
  • the lamp further comprises at at least one intermediate support attached to a winding of said filament
  • FIG. 3a illustrates a lamp according to a first embodiment particular of this variant and Figure 3b is a section of such a lamp according to a YY axis.
  • a lamp comprises, in addition to the elements already described in the figure 1a, a first intermediate support 111 and a second intermediate support 112, located above the filament 105.
  • These two intermediate supports ensure good maintenance of the filament 105 and reduce its sagging. In this way, the rupture of the filament 105 caused by the metal frame 109 occurs after a time lamp operation higher than in the absence of such supports intermediate.
  • Intermediate supports 111 and 112 can be built into bridge 110 or in pinch seal 101. They may have, as shown in FIG. 3a, a hook-shaped end, which makes their installation in the particularly simple lamp.
  • FIG. 4a illustrates a lamp according to a second embodiment particular of this variant and Figure 4b is a sectional view of such a lamp along the YY axis.
  • the metal frame is linked to a intermediate supports.
  • linked is meant that the armature metal can be a metal part welded or attached to a support intermediate, or that the metal reinforcement can be an integral part of a intermediate support, i.e. an intermediate support plays the role itself of the metal frame 109.
  • the second support intermediate 112 is extended by a metal part comprising a part straight below the filament 105. It thus plays the role of the armature metal 109 of Figure 1a.
  • the first intermediate support 111 could also play this role.
  • the second intermediate support 112 bypasses the filament 105, as can be seen in FIG. 4b, so that it does not come into contact with the filament 105, at a point other than at its hook, only when the filament 105 collapses.
  • Figure 4c shows how such a support intermediate 112 acts as a metal frame responsible for the short circuit causing a filament break.
  • the current arrives via the second conducting wire 104, crosses the support metallic 108, then the windings A, B, C, D and E to the point of contact P, then the second intermediate support 112 to its hook, and finally the windings G and H, to come out through the first conducting wire 103.
  • winding F and part of winding E are short-circuited and, for reasons identical to those described in the description of Figure 1c, the filament 105 may break.
  • the heating caused by the short circuit is less important than in a case where the armature is used metallic 109, for example in the lamp of FIG. 1a. Indeed, a number less windings is short-circuited in the case of Figure 4c. However, this heating may be sufficient to cause the rupture of the filament 105.
  • Figures 1a to 4c illustrate examples of implementation of the invention.
  • the invention is not limited to these examples only.
  • Other types metallic reinforcements can be imagined, since these reinforcements are capable of causing a short circuit in certain windings of the filament 105, in order to avoid an explosion of the lamp at the end of its life.
  • a metal frame can be connected to filament 105 in places other than those described in these figures.
  • the metal frame 109 can be directly welded or attached to the first end 105a of the filament 105, instead of being welded to the first metal tab 106. It can also be welded or attached to one of the filament windings 105, by example winding H.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
EP02078423A 2001-08-21 2002-08-19 Lampe mit explosionssicherer Vorrichtung Withdrawn EP1286384A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0110959 2001-08-21
FR0110959 2001-08-21

Publications (1)

Publication Number Publication Date
EP1286384A1 true EP1286384A1 (de) 2003-02-26

Family

ID=8866631

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02078423A Withdrawn EP1286384A1 (de) 2001-08-21 2002-08-19 Lampe mit explosionssicherer Vorrichtung

Country Status (4)

Country Link
US (2) US7005800B2 (de)
EP (1) EP1286384A1 (de)
JP (1) JP2003115284A (de)
CN (1) CN1326198C (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007105121A1 (en) * 2006-03-16 2007-09-20 Koninklijke Philips Electronics, N.V. Incandescent lamp and lamp mounting assembly having filament sag-limiting safety feature
JP2009146731A (ja) * 2007-12-14 2009-07-02 Kahoku Lighting Solutions Corp 片口金型ハロゲン電球
JP5120132B2 (ja) * 2008-08-01 2013-01-16 ウシオ電機株式会社 フィラメントランプ
DE102008061776A1 (de) * 2008-12-11 2010-06-17 Osram Gesellschaft mit beschränkter Haftung Halogenglühlampe
WO2010115117A2 (en) * 2009-04-03 2010-10-07 Applied Materials, Inc. Lamp with internal fuse system
JP5765354B2 (ja) * 2013-03-13 2015-08-19 岩崎電気株式会社 ハロゲンランプ
JP6595945B2 (ja) * 2015-05-15 2019-10-23 株式会社アルバック ピラニ真空計

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3403280A (en) * 1966-03-04 1968-09-24 Gen Electric Single-ended electric incandescent lamp filament support
US3840953A (en) * 1972-06-06 1974-10-15 Westinghouse Electric Corp Method of assembling a filament-mount for a single-ended incandescent lamp
US3930177A (en) * 1972-06-06 1975-12-30 Westinghouse Electric Corp Single-ended incandescent lamp having a simplified filament-mount
US4132922A (en) * 1977-10-13 1979-01-02 Westinghouse Electric Corp. Gas-filled incandescent lamp with integral fuse assembly
US4994707A (en) * 1988-09-22 1991-02-19 Patent-Treuhand Gesellschaft fur elektrische Glum.b.H. Vibration-resistant single-ended halogen incandescent lamp
JPH10241639A (ja) * 1996-06-05 1998-09-11 Toshiba Lighting & Technol Corp 電球、反射鏡付き電球および照明器具

Family Cites Families (16)

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Publication number Priority date Publication date Assignee Title
NL211265A (de) * 1955-10-14
US3007073A (en) * 1959-08-27 1961-10-31 Sylvania Electric Prod Electric lamp mount
US3696265A (en) * 1970-11-04 1972-10-03 Westinghouse Electric Corp Compact single-ended incandescent lamp having improved filament mount assembly
DE2305960A1 (de) * 1973-02-07 1974-08-08 Patra Patent Treuhand Halogengluehlampe
GB1523418A (en) * 1976-03-01 1978-08-31 Tokyo Shibaura Electric Co Elongate electric incandescent lamp
EP0020075B1 (de) * 1979-05-22 1983-04-06 THORN EMI plc Verbesserungen an Lampen mit geradlinigem Glühfaden
EP0034030B1 (de) * 1980-02-06 1984-10-03 Thorn Emi Plc Leuchtdrahthalterung
DE3616673A1 (de) * 1986-05-16 1987-11-19 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Halogengluehlampe
US4835443A (en) * 1986-12-16 1989-05-30 Gte Products Corporation High voltage hard glass halogen capsule
DE8716797U1 (de) * 1987-12-21 1988-02-18 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Halogenglühlampe
JPH02177248A (ja) * 1988-12-28 1990-07-10 Toshiba Corp ハロゲン電球
TW297551U (en) * 1992-03-27 1997-02-01 Gen Electric Filament support for incandescent lamps
JPH097553A (ja) * 1995-06-23 1997-01-10 Toshiba Lighting & Technol Corp 白熱電球およびこれを用いた照明装置
JPH09147811A (ja) * 1995-11-29 1997-06-06 Toshiba Lighting & Technol Corp 白熱電球およびこれを用いた反射形照明装置
JP3424516B2 (ja) * 1997-07-30 2003-07-07 松下電器産業株式会社 ハロゲン電球およびその製造方法
DE60121693T2 (de) * 2000-09-25 2007-03-29 Koninklijke Philips Electronics N.V. Kolbenlampe mit Vorrichtung zur Kurzschlussvermeidung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3403280A (en) * 1966-03-04 1968-09-24 Gen Electric Single-ended electric incandescent lamp filament support
US3840953A (en) * 1972-06-06 1974-10-15 Westinghouse Electric Corp Method of assembling a filament-mount for a single-ended incandescent lamp
US3930177A (en) * 1972-06-06 1975-12-30 Westinghouse Electric Corp Single-ended incandescent lamp having a simplified filament-mount
US4132922A (en) * 1977-10-13 1979-01-02 Westinghouse Electric Corp. Gas-filled incandescent lamp with integral fuse assembly
US4994707A (en) * 1988-09-22 1991-02-19 Patent-Treuhand Gesellschaft fur elektrische Glum.b.H. Vibration-resistant single-ended halogen incandescent lamp
JPH10241639A (ja) * 1996-06-05 1998-09-11 Toshiba Lighting & Technol Corp 電球、反射鏡付き電球および照明器具

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 14 31 December 1998 (1998-12-31) *

Also Published As

Publication number Publication date
CN1326198C (zh) 2007-07-11
US7005800B2 (en) 2006-02-28
US7259515B2 (en) 2007-08-21
CN1407600A (zh) 2003-04-02
JP2003115284A (ja) 2003-04-18
US20060006800A1 (en) 2006-01-12
US20030062834A1 (en) 2003-04-03

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