WO2003088293A2 - Lampe comprenant une ampoule interne et une ampoule externe - Google Patents

Lampe comprenant une ampoule interne et une ampoule externe Download PDF

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Publication number
WO2003088293A2
WO2003088293A2 PCT/IB2003/001282 IB0301282W WO03088293A2 WO 2003088293 A2 WO2003088293 A2 WO 2003088293A2 IB 0301282 W IB0301282 W IB 0301282W WO 03088293 A2 WO03088293 A2 WO 03088293A2
Authority
WO
WIPO (PCT)
Prior art keywords
vessel
lamp
outer vessel
electrical conductors
burner
Prior art date
Application number
PCT/IB2003/001282
Other languages
English (en)
Other versions
WO2003088293A3 (fr
Inventor
Herbert Gilles
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
Priority to AU2003219350A priority Critical patent/AU2003219350A1/en
Publication of WO2003088293A2 publication Critical patent/WO2003088293A2/fr
Publication of WO2003088293A3 publication Critical patent/WO2003088293A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/34—Double wall vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
    • H01K1/325—Reflecting coating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Definitions

  • the invention relates to a lamp.
  • Electric incandescent lamps in which an incandescent filament is used as the light-generating element are known.
  • the incandescent filament is arranged in a sealed vessel having transparent walls. The ends of the incandescent filament are connected to electrical conductors that, to allow an electrical connection to be made, emerge from the vessel via a seal.
  • the interior of the vessel is usually filled with an inert gas and halogen constituents.
  • the burner i.e. the unit comprising the sealed vessel, the incandescent filament contained therein, and the electrical conductors emerging from the vessel, reaches high temperatures in operation. This causes problems due to the oxidation of the electrical conductors emerging from the vessel. There are different known solutions to this problem.
  • a lamp having a burner that is arranged in an outer vessel.
  • the burner comprises a sealed inner vessel with transparent walls in which an incandescent filament is arranged. Emerging from the inner vessel with a seal at opposite ends of the vessel are electrical conductors to which the ends of the incandescent filament are connected.
  • the interior of the outer vessel is filled with an inert gas.
  • the interior of the outer vessel is evacuated.
  • the pressure within the outer vessel is preferably between 5 mbar and 500 mbar.
  • the protection against oxidation is further improved by introducing into the interior of the outer vessel a material that traps any oxygen that may still be present after manufacture.
  • Materials of this kind are known per se and are referred to as getters. They contain a given amount of a substance that is activated after the outer vessel has been evacuated and sealed, by targeted exposure to heat for example, and then absorb and bind any oxygen left in the region of the outer vessel. In this way, any residual oxygen left in the outer vessel is further reduced.
  • An example of a substance that may be used as a getter is ZrCo.
  • Burners of the double-ended type are preferred, that is to say ones where the electrical conductors emerge from the inner vessel at opposite ends thereof.
  • the inner vessel is preferably approximately elliptical in shape in longitudinal section, with electrical conductors emerging from the vessel at opposite ends in the sealing regions.
  • the electrical conductors are preferably composed of molybdenum.
  • a coating that is more reflective of light in the infrared range than of light in the visible range is applied.
  • the use of such coatings is known per se to those skilled in the art.
  • the wall of the inner vessel is preferably so shaped that the infrared radiation reflected from the coating is reflected back onto the filament. This increases the temperature of the filament and prevents losses of energy, which saves a considerable amount of energy.
  • infrared-reflective coating use is preferably made of successive layers of SiO on the one hand and either mixtures of Nb 0 5 and Ta 2 O 5 , or pure Ta O 5 or Zr0 2 , on the other. Layers of this kind are described in detail in US A 6,049,169. It has been found that infrared-reflective layers of this type - unlike other known layers of this kind - perform their function even in an evacuated outer vessel, i.e. when no oxygen is present.
  • the outer vessel has a transparent wall, preferably of quartz glass.
  • a substantially cylindrical shape is preferred for the outer vessel.
  • Electrical conductors to allow electrical contact to be made with the burner extend through the interior of the outer vessel. These preferably emerge from the bulb-shaped outer vessel at one end thereof, mutually parallel and at a distance from one another.
  • part of the outer vessel is provided with a layer that is impermeable to light.
  • the layer impermeable to light is preferably arranged in the region of the tip of the bulb that is formed.
  • the layer impermeable to light may act as antiglare protection.
  • antiglare strips or regions of other shapes may also be formed.
  • Fig, 1 is a longitudinal section through one embodiment of a lamp according to the present invention.
  • a lamp 10 Shown in Fig. 1 in longitudinal section is a lamp 10.
  • a halogen burner 14 held in a substantially cylindrical outer vessel 12 is a halogen burner 14.
  • the halogen burner 14 comprises a vessel 16 of quartz glass in whose interior is arranged an incandescent filament 18.
  • the interior of the vessel 16 is filled with an inert gas (for example Kr, Xe, Ar) or a mixture of inert gases (for example 50% Xe, 50% Kr) and additional halogen constituents.
  • an inert gas for example Kr, Xe, Ar
  • a mixture of inert gases for example 50% Xe, 50% Kr
  • additional halogen constituents for example 50% Xe, 50% Kr
  • sealing regions 20 Formed at opposite ends of the vessel 16 are sealing regions 20.
  • the incandescent filament 18 is connected to electrical conductors, flat strips 22 of molybdenum in the present case, that run out from the interior of the vessel 16.
  • the wall of the vessel 16 which is composed of quartz glass, is compressed at the sealing regions 20, thus enclosing the molybdenum strip 22 with a seal.
  • the vessel 16 is circular in cross-section.
  • the sealed areas 20 are of a flat form and are also referred to as "pinches".
  • the vessel 16 In its central region, the vessel 16 is approximately elliptical in shape in longitudinal section. In this region, a layer 24, which is shown here as relatively thick for the sake of clarity, is applied to the outside of the vessel 16.
  • the layer 24 is a layer Icnown per se that is largely transparent to light in the visible range but reflects light in the infrared range.
  • the layer 24 itself comprises a series of successive layers (not shown).
  • the layer 24 is formed from, in each case, a layer of Si0 2 alternating with a layer of Ta 2 0 5 .
  • the coating may comprise alternating layers of Si0 2 and Zr0 2 . Such layers are described in detail in US A 6,049,169, to which explicit reference is made here.
  • Extending through the interior of the outer vessel 12 are wires 26 that hold the burner 14 in position mechanically in the interior of the outer vessel 12 and make electrical contact on the sealing regions 20.
  • an outer sealing region 28 At the end of the outer vessel 12 that is at the bottom in the Figure is formed an outer sealing region 28 at which the wires 26 connect up with further strips of molybdenum, following on from which are wires 38 that emerge from the region of the outer vessel 12 with a seal.
  • the ends of the wires 38 project downwards from the outer vessel 12 to form plug-in contacts.
  • the light-impermeable layer 30 forms an anti-dazzle cap in the region of the tip of the vessel 12.
  • light- impermeable layers may also be applied to the outer vessel 12 at another point, for example in order to deliberately mask off given radiant areas or to avoid dazzle effects.
  • the interior of the outer vessel 12 is evacuated.
  • the pressure in the interior of the outer vessel 12 is approximately 100 mbar.
  • a getter 32 is also situated in the interior of the outer vessel 12, fastened to the wires 26 in this case.
  • the getter 32 is a metal vane 34 that contains a material 36 that is capable of absorbing and binding oxygen.
  • the material 36 is composed of ZrCo.
  • the getter material 32 is activated by targeted heating.
  • the ZrCo material 36 becomes active and binds some of the oxygen that is still present in the interior of the vessel 12.
  • the possible materials for the material 36 and the procedure for activating it are Icnown per se to the man skilled in the art and therefore do not require any further elucidation here.
  • the outer vessel of the lamp 10 is approx. 5 cm long and has a diameter of approx. 1.4 cm.
  • the burner 14, which has a diameter of approx. 1 cm in the central region, can be arranged at a distance from the walls of the outer vessel 12.
  • the lamp 10 is used by plugging it into an appropriate socket, usually one having a reflector.
  • the projecting contacts 38 are used as male pins when this is done.
  • the lamp 10 is operated at voltages of 10 - 24 volts and consumes powers of 20 - 100 W. Of the light emitted by the incandescent filament 18, the infrared part is reflected back onto the filament 18 by the layer 24. The visible part emerges through the wall of the outer vessel 12 (except for the light-impermeable cap 30) and is used for lighting purposes. Despite the high temperatures in operation of more than 500°C, there is, in the sealing regions 20, no oxidation of the strips 22 of molybdenum due to the absence of oxygen in the interior of the outer vessel 12.

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  • Resistance Heating (AREA)

Abstract

La présente invention concerne une lampe qui comprend un brûleur halogène (16) dont le filament incandescent (18) est relié à des conducteurs électriques qui s'échappent du brûleur (22) dans des régions d'étanchéité. Afin d'empêcher l'oxydation de ces conducteurs, le brûleur (14) est agencé à l'intérieur d'une ampoule externe (12) de préférence à flancs droits dont l'intérieur est vide d'air. Le brûleur (14) comprend de préférence une couche réfléchissant les infrarouges (24). L'ampoule extérieure peut être munie d'un capuchon antireflet (30).
PCT/IB2003/001282 2002-04-12 2003-04-14 Lampe comprenant une ampoule interne et une ampoule externe WO2003088293A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003219350A AU2003219350A1 (en) 2002-04-12 2003-04-14 Lamp having an inner and an outer vessel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10216454 2002-04-12
DE10216454.1 2002-04-12

Publications (2)

Publication Number Publication Date
WO2003088293A2 true WO2003088293A2 (fr) 2003-10-23
WO2003088293A3 WO2003088293A3 (fr) 2004-07-22

Family

ID=29224486

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2003/001282 WO2003088293A2 (fr) 2002-04-12 2003-04-14 Lampe comprenant une ampoule interne et une ampoule externe

Country Status (2)

Country Link
AU (1) AU2003219350A1 (fr)
WO (1) WO2003088293A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102713696A (zh) * 2009-11-30 2012-10-03 通用电气公司 用于高温应用的氧化物多层和灯

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB481063A (en) * 1936-09-12 1938-03-04 Ver Gluehlampen & Elek Ag Gas-filled electric incandescent lamp
FR1605130A (fr) * 1966-12-19 1973-03-16
US5619102A (en) * 1994-11-10 1997-04-08 U.S. Philips Corporation Electric lamp
GB2313706A (en) * 1993-12-10 1997-12-03 Gen Electric A process for forming patterned optical interference coatings for electric lamps
EP0895275A2 (fr) * 1997-07-30 1999-02-03 Matsushita Electronics Corporation Lampe à tungstène-halogène et son procédé de fabrication
US6049169A (en) * 1998-04-08 2000-04-11 Philips Electronics North America Corp. Electric lamp having optical interference filter of alternating layers of SiO2 and Nb2 O5 --Ta2 O5
EP1052447A2 (fr) * 1999-05-14 2000-11-15 Stanley Electric Co., Ltd. Dispositif d' éclairage à décharge pour véhicules
WO2001084597A1 (fr) * 2000-05-05 2001-11-08 Illumination Technology, Inc. Lampe a incandescence a basse tension a double enveloppe
EP1227512A2 (fr) * 2001-01-24 2002-07-31 General Electric Company Lampe halogène à filament avec une haute pression

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB481063A (en) * 1936-09-12 1938-03-04 Ver Gluehlampen & Elek Ag Gas-filled electric incandescent lamp
FR1605130A (fr) * 1966-12-19 1973-03-16
GB2313706A (en) * 1993-12-10 1997-12-03 Gen Electric A process for forming patterned optical interference coatings for electric lamps
US5619102A (en) * 1994-11-10 1997-04-08 U.S. Philips Corporation Electric lamp
EP0895275A2 (fr) * 1997-07-30 1999-02-03 Matsushita Electronics Corporation Lampe à tungstène-halogène et son procédé de fabrication
US6049169A (en) * 1998-04-08 2000-04-11 Philips Electronics North America Corp. Electric lamp having optical interference filter of alternating layers of SiO2 and Nb2 O5 --Ta2 O5
EP1052447A2 (fr) * 1999-05-14 2000-11-15 Stanley Electric Co., Ltd. Dispositif d' éclairage à décharge pour véhicules
WO2001084597A1 (fr) * 2000-05-05 2001-11-08 Illumination Technology, Inc. Lampe a incandescence a basse tension a double enveloppe
EP1227512A2 (fr) * 2001-01-24 2002-07-31 General Electric Company Lampe halogène à filament avec une haute pression

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102713696A (zh) * 2009-11-30 2012-10-03 通用电气公司 用于高温应用的氧化物多层和灯

Also Published As

Publication number Publication date
WO2003088293A3 (fr) 2004-07-22
AU2003219350A1 (en) 2003-10-27
AU2003219350A8 (en) 2003-10-27

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