EP1309985A1 - Lampe a incandescence haute tension compacte - Google Patents

Lampe a incandescence haute tension compacte

Info

Publication number
EP1309985A1
EP1309985A1 EP01964844A EP01964844A EP1309985A1 EP 1309985 A1 EP1309985 A1 EP 1309985A1 EP 01964844 A EP01964844 A EP 01964844A EP 01964844 A EP01964844 A EP 01964844A EP 1309985 A1 EP1309985 A1 EP 1309985A1
Authority
EP
European Patent Office
Prior art keywords
lamp
bulb
incandescent lamp
incandescent
double helix
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Withdrawn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
EP01964844A
Other languages
German (de)
English (en)
Inventor
Helmut Davideit
Sigbert Müller
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP1309985A1 publication Critical patent/EP1309985A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/02—Incandescent bodies
    • H01K1/14—Incandescent bodies characterised by the shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/18—Mountings or supports for the incandescent body
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/38—Seals for leading-in conductors

Definitions

  • the invention relates to a compact electric high-voltage incandescent lamp.
  • high-voltage incandescent lamp is to be understood in a generalized manner in that it means incandescent lamps which are connected directly to the mains voltage, e.g. without a voltage converter, for example a transformer or electronic converter. 115 V or 230 V, can be operated.
  • the lamp bulb which is usually filled with inert gas, for example N 2 , Xe, Ar and / or Kr, additionally contains halogen additives which maintain a tungsten-halogen cycle in order to counteract blackening of the bulb.
  • inert gas for example N 2 , Xe, Ar and / or Kr
  • This type of lamp is used in general lighting as well as for special lighting purposes, in combination with an optical reflector, for example in projection technology.
  • the trend for high-voltage halogen incandescent lamps is increasingly towards compact lamp dimensions.
  • the compactness of the lamp and especially the Luminous body of the lamp is particularly important in projection applications.
  • the reason for this lies, among other things, in the connection between the electrical resistance R of the filament and the desired electrical power consumption P for a given supply voltage U.
  • the relationship P U 2 / R applies, since the supply voltage U is quadratic in the above relationship, must during the transition from the low-voltage to the high-voltage range, the resistance of the incandescent filament can be increased considerably in order to achieve the same power consumption of the lamp.
  • the resistance R of the wire coil in turn depends, among other things, on the wire diameter and the wire length.
  • the wire for high-voltage halogen incandescent lamps is typically between 1 m and 2 m long, depending on the wire diameter and power (here, for example, 50 ⁇ m and 150 W or 190 ⁇ m and 1000 W).
  • the filament filaments in high-voltage lamps are generally longer than in low-voltage types.
  • a compact halogen incandescent lamp with a double filament is already known from the document EP-A 0 743 673.
  • the double filament is arranged within a cylindrical lamp bulb and is transverse to the longitudinal axis of the lamp. This document does not give specific information about the operating voltage. However, at least it does not seem to be suitable for 230 V operation.
  • GB-A 2302208 shows a compact halogen incandescent lamp using low to medium volt technology (eg 6 to 36 V) with a double filament and an IR radiation reflecting layer applied to the wall surface of the lamp bulb.
  • the double filament is arranged in the axis of the cylindrical part of the lamp bulb.
  • US-A 4,499,401 discloses an incandescent lamp with a triple filament, which is arranged transversely to the lamp longitudinal axis within a pear-shaped lamp bulb.
  • This light bulb has an Edison screw base and is also suitable for operation at 230 V, among other things.
  • HV incandescent lamps with a plurality of filament segments are also known, the individual filament segments being fixed within the lamp bulb by a complex filament frame.
  • Another disadvantage is the poor illumination quality when using such a lamp in an optical reflector. Because of the spatially extensive and segmented filament, an undesirably uneven luminous intensity distribution results.
  • the object of the present invention is to provide a compact high-voltage incandescent lamp. Other aspects are to provide higher luminance as well as efficiency and better illumination quality when used in an optical reflector.
  • the compact high-voltage incandescent lamp according to the invention has a triple winding in the form of a double helix as the luminous element, which in turn is formed from a conventional double winding.
  • the double helix can be viewed as consisting of two spatially intermeshing double helix sections, the two double helix sections being realized as helical lines of the same type, but with opposite directions in terms of current flow. These two helical lines are offset from each other in the axial direction by approximately half a climbing height so that their two longitudinal axes coincide. The height of climb is defined here as the distance within which the helical lines make a complete revolution.
  • the two double spiral sections merge into one another at a first end of the luminous element. At the opposite end of the filament, the double spiral sections are each connected to a power supply. While the lamp is operating, the full mains voltage is on the power supply.
  • the initial areas of the two double helix halves are less closely adjacent, but without unduly increasing the overall length of the luminous element.
  • the long filament required for high-voltage incandescent lamps is in this way a very compact, one-piece, i.e. unsegmented, luminous body designed in the form of the triple thread explained above.
  • the main part of the lamp bulb has the shape of a cylinder with a circular cross section.
  • the elongated double helix is oriented axially within the cylindrical lamp bulb. In this way, the lamp bulb and the lamp body are geometrically well matched, which results in the particularly compact design of the lamp.
  • IR radiation infrared
  • a layer reflecting infrared (IR) radiation in a manner known per se (see, for example, GB-A 2302208, already cited).
  • IR infrared
  • the increase in lamp efficiency achieved in this way can be used, on the one hand, with constant electrical power consumption for a temperature increase in the luminous element and consequently an increase in the luminous flux.
  • a predetermined luminous flux can be achieved with lower electrical power consumption - an advantageous “energy-saving effect”.
  • Another advantageous effect is that, owing to the IR layer, significantly less IR radiation power is emitted through the lamp bulb and thus the environment is heated up than with conventional light bulbs.
  • the main part of the lamp bulb is designed as an EUipsoid or at least approximately as an EUipsoid.
  • This bulb shape enables a particularly efficient return of the IR radiation. Further details can be found, for example, in EP-A 0765 528.
  • La a high-voltage halogen incandescent lamp with double helix luminous element and cylindrical lamp bulb in side view
  • Fig. Lb like figure la, but rotated by 90 °
  • 2a is a side view of a high-voltage halogen incandescent lamp with double helix filament and ellipsoidal lamp bulb
  • Fig. 3 is a schematic diagram of the manufacture of the double helix filament from a double winding.
  • Figures la, lb show a schematic representation of a side view and a 90 ° rotated view of a high-voltage halogen incandescent lamp squeezed on one side according to the invention for operation on 230 V mains voltage.
  • the electrical power consumption and the luminous efficacy are 1000 W and 25 Im / W.
  • the lamp has a cylindrical lamp bulb 1 made of quartz glass, which is formed at one end into a dome with a closed pump tip 2. At the other end, the lamp bulb 1 is fused using a pinch seal 3.
  • the lamp bulb 1 encloses a halogen filling known per se, as is customary for halogen incandescent lamps.
  • the filling components are, for example, xenon (Xe) and nitrogen (N 2 ) and a few percent of a halogen, for example dibromomethane (DBM).
  • the filling pressure is approx. 3 bar.
  • a one-piece luminous element 4 is arranged axially within the lamp bulb 1. As can be seen from the magnifying glass in FIG. 1b, it consists of a double helix 4a-4c, known per se, made of tungsten wire, which in turn is shaped into a double helix.
  • the double helix 4 has two spatially interlocking helical double spiral sections 4a, 4b, which merge seamlessly into one another by means of an arcuate double spiral section 4c.
  • the helical sections 4a, 4b of the double helix 4 each have one and a half turns.
  • the outer diameter and the length of the double helix 4 are approximately 11 mm and 16 mm, respectively.
  • the double helix filament 4 is very compact for operation on 230 V mains voltage and 1000 W power consumption.
  • the two simply coiled ends 5a, 5b of the filament are fixed in a quartz beam 6, which in turn is supported by two wire pins 7a, 7b, which also serve as a power supply.
  • the latter end in the pinch seal 3, where they are each connected to a molybdenum foil 8a, 8b.
  • the molybdenum foils 8a, 8b are finally connected to a power supply pin 9a, 9b leading to the outside.
  • the end of the double helix luminous element 4 close to the pump tip 2, ie the double helix section 4c, is fixed with a holder 10 made of wire.
  • the wire holder 10 is formed into an elongated bracket, which in one Eyelet 11 ends.
  • the section 4c connecting the two halves of the double helix 4 is suspended in this eyelet 11.
  • the other end of the holder 10 is fixed in the quartz beam 6.
  • the other end of the holder 10 can also be extended up to the pinch seal 3.
  • the aforementioned quartz beam 6 can be dispensed with, since the holder is then fixed directly in the pinch seal.
  • a holder can also be dispensed with entirely, namely if the stability of the helix is sufficiently large, for example with a correspondingly large wire diameter.
  • the halogen incandescent lamp from FIG. 1 a, lb combines the high-voltage suitability with particular compactness ,
  • FIGS. 2a, 2b schematically show a further exemplary embodiment of a high-voltage halogen incandescent lamp (230 V) squeezed on one side according to the invention in a side view and in a view rotated by 90 °.
  • a high-voltage halogen incandescent lamp 230 V
  • FIGS. 2a, 2b schematically show a further exemplary embodiment of a high-voltage halogen incandescent lamp (230 V) squeezed on one side according to the invention in a side view and in a view rotated by 90 °.
  • 230 V high-voltage halogen incandescent lamp
  • the lamp in FIGS. 2 a, 2 b has an ellipsoidal lamp bulb 12, the outer wall surface of which is provided with a layer system 13 reflecting IR radiation.
  • the layer system 13 consists of an interference filter known per se - usually a sequence of alternating dielectric layers of different refractive indices. In the present case, there is an alternating sequence of Nb2 ⁇ s and Si0 2 layers.
  • the lamp bulb 12 has a pronounced constriction 14 in the area of the lamp neck, ie directly in the area of the transition from the lamp bulb 12 to the pinch seal 3, which is relatively wide due to the foil passage achieved correspondingly high efficiency of the lamp.
  • the halogen incandescent lamp from FIGS. 2a, 2b combines high-voltage suitability with IR layer technology and compactness.
  • the lamp from FIG. 1 and, alternatively, that from FIG. 2 is installed in an optical reflector.
  • FIG. 3 shows the principle of producing the double helix luminous element 4 according to the invention from a double winding 4 '.
  • the double winding 4 ' (details not shown) is placed centrally in the groove 15 of a winding mandrel 16.
  • a double helix 4 is formed from the double winding 4 ', which is then removed from the winding mandrel 16 and installed in the lamp according to the invention according to FIGS. 1a, b and 2a, b.
  • the bottle neck-shaped configuration of the winding mandrel 16 enables the production of a double helix with a diameter that increases in the direction of the current leads.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Resistance Heating (AREA)

Abstract

L'invention concerne une lampe à incandescence haute tension compacte dont l'élément lumineux est constitué par un enroulement triple se présentant sous la forme d'une double hélice (4) conçue sous la forme d'un filament bispiralé (4a-4c). On obtient ainsi des lampes à incandescence haute tension compactes présentant une luminance élevée.
EP01964844A 2000-08-14 2001-07-24 Lampe a incandescence haute tension compacte Withdrawn EP1309985A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10040253A DE10040253A1 (de) 2000-08-14 2000-08-14 Kompakte Hochvolt-Glühlampe
DE10040253 2000-08-14
PCT/DE2001/002800 WO2002015230A1 (fr) 2000-08-14 2001-07-24 Lampe a incandescence haute tension compacte

Publications (1)

Publication Number Publication Date
EP1309985A1 true EP1309985A1 (fr) 2003-05-14

Family

ID=7652771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01964844A Withdrawn EP1309985A1 (fr) 2000-08-14 2001-07-24 Lampe a incandescence haute tension compacte

Country Status (10)

Country Link
US (1) US20020171360A1 (fr)
EP (1) EP1309985A1 (fr)
JP (1) JP2004507045A (fr)
KR (1) KR20020047226A (fr)
CN (1) CN1388982A (fr)
CA (1) CA2387088A1 (fr)
DE (1) DE10040253A1 (fr)
HU (1) HUP0203675A2 (fr)
TW (1) TW518634B (fr)
WO (1) WO2002015230A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104409318B (zh) * 2014-11-13 2016-09-14 连云港市欧雅特照明电器有限公司 一种生产小型石英弹簧灯的方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR17294E (fr) * 1910-08-09 1913-07-31
US4316116A (en) * 1979-12-19 1982-02-16 General Electric Company Triple-coil incandescent filament
US4499401A (en) * 1983-03-03 1985-02-12 General Electric Company Triple coil incandescent filament
US4683397A (en) * 1986-04-14 1987-07-28 Gte Products Corporation Compact incandescent coiled coil filament
US4959585A (en) * 1988-09-06 1990-09-25 General Electric Company Electric incandescent lamp and method of manufacture therefor
JP2932145B2 (ja) * 1994-03-30 1999-08-09 オスラム・メルコ株式会社 熱陰極形低圧希ガス放電ランプの点灯方法
DE4420607A1 (de) * 1994-06-13 1995-12-14 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Elektrische Glühlampe und Leuchtkörper für Glühlampen
DE10001007A1 (de) * 2000-01-12 2001-07-19 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Leuchtkörper für eine Glühlampe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0215230A1 *

Also Published As

Publication number Publication date
TW518634B (en) 2003-01-21
HUP0203675A2 (en) 2003-02-28
DE10040253A1 (de) 2002-02-28
KR20020047226A (ko) 2002-06-21
JP2004507045A (ja) 2004-03-04
WO2002015230A1 (fr) 2002-02-21
US20020171360A1 (en) 2002-11-21
CN1388982A (zh) 2003-01-01
CA2387088A1 (fr) 2002-02-21

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