EP2102892B1 - Lampe avec une ampoule a revetement partiel - Google Patents

Lampe avec une ampoule a revetement partiel Download PDF

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Publication number
EP2102892B1
EP2102892B1 EP07847963.1A EP07847963A EP2102892B1 EP 2102892 B1 EP2102892 B1 EP 2102892B1 EP 07847963 A EP07847963 A EP 07847963A EP 2102892 B1 EP2102892 B1 EP 2102892B1
Authority
EP
European Patent Office
Prior art keywords
lamp
coating
base
light
height
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.)
Not-in-force
Application number
EP07847963.1A
Other languages
German (de)
English (en)
Other versions
EP2102892A2 (fr
Inventor
Marc Lünnemann
Oliver Hering
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
Osram GmbH
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 GmbH filed Critical Osram GmbH
Publication of EP2102892A2 publication Critical patent/EP2102892A2/fr
Application granted granted Critical
Publication of EP2102892B1 publication Critical patent/EP2102892B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K9/00—Lamps having two or more incandescent bodies separately heated
    • H01K9/08—Lamps having two or more incandescent bodies separately heated to provide selectively different light effects, e.g. for automobile headlamp

Definitions

  • the invention relates to a lamp according to the preamble of claim 1.
  • Such a lamp is for example in the published patent application DE 40 39 948 A1 disclosed.
  • This document describes a halogen incandescent lamp for a motor vehicle headlamp with two filaments for high and low beam, the lamp vessel is provided in the range of Abbleriumtglühfadens with a multilayer coating to produce yellow light.
  • the DE 102 47 983 A1 . EP 0 772 378 A2 . DE 86 00 640 U1 and the DE 1 909 394 each reveal lamps with coated lamp vessels.
  • the lamp according to the invention has a lamp base and a lamp vessel fixed therein and at least one illuminant arranged within the lamp vessel, wherein an at least partially light-absorbing coating is arranged on the surface of the lamp vessel, which is arranged on a portion near the base of the lamp vessel and extends up to a maximum height above the lamp base, which is smaller than the height of the at least one luminous means above the lamp base.
  • the light beams which leave the lamp in the area near the base of the lamp vessel and which do not make a significant contribution to the desired illumination function are completely or partially absorbed according to the invention, or in a non-inventive example.
  • the light beams which leave the lamp in the vicinity of the base of the lamp vessel and contribute to the illumination of the vehicle apron and the visibility values above the cut-off line make no significant contribution to the essential for street illumination area near the cut-off line, according to the invention partially or, in a non-inventive example, completely absorbed.
  • the coating of the lamp according to the invention thus contributes, at least in the case of a vehicle headlamp, to the reduction of the glare effect of the luminous means due to the absorption of the light beams lying above the light-dark boundary to the visibility values.
  • the coating of the lamp according to the invention does not extend into the portion of the lamp vessel which is opposite the illuminant and surrounds the luminous means, so that the light beams which make the main contribution to the illuminance in the area which illuminates the street illumination close to the cut-off line, not weakened by the coating.
  • an inventive Lamp which is used for example as a vehicle headlamp, a high level of illumination in the essential for street illumination area near the cut-off line while reducing the glare of the bulb can be achieved.
  • the coating is light impermeable.
  • the coating is designed such that it preferably partially or completely absorbs light from a predetermined spectral range.
  • the coating may be light impermeable to reduce glare.
  • the coating can however also be designed such that it preferably absorbs light from a predetermined spectral range.
  • the layer thickness and the material used in the coating their degree of absorption can be changed.
  • the coating of the lamp according to the invention on the socket portion near the lamp vessel preferably extends to the lamp cap and completely covers the surface of the portion of the lamp vessel close to the socket.
  • sealed portion of the lamp vessel remains preferably uncoated to avoid problems in the socket.
  • the lamp according to the invention is provided with a further coating, which is arranged on the surface of a lamp socket remote from the base, remote from the base portion of the lamp vessel.
  • This further coating extends in the direction of the lamp cap up to a minimum height above the lamp base which is greater than the sum of the height of the at least one luminous means above the lamp cap and the extent of the at least one luminous means in the longitudinal direction of the lamp.
  • the further coating on the socket-remote lamp vessel section and the coating on the lamp vessel section near the socket are separated by an annular, uncoated lamp vessel section enclosing the at least one light-emitting means.
  • the further coating preferably also covers the tip of the lamp vessel, if it is not already light-impermeable.
  • the glare of the lamp according to the invention is further reduced, because now the light rays from the sockelfernen end portion of the lamp vessel, which also make no significant contribution to the desired illumination function, according to the invention partially or in a non-invention belonging to the example, completely absorbed ,
  • the further coating of the lamp is also, in a non-inventive example, light impermeable or, alternatively and according to the invention, designed in such a way for the reasons mentioned above, that it preferably absorbs light from a given spectral range.
  • the invention is preferably applicable to incandescent lamps having one or two filaments as lighting means, and more preferably to incandescent lamps for vehicle headlights.
  • the lamp according to the invention has two filaments as lighting means, wherein the first filament is disposed at a first height above the lamp base and the second filament is disposed at a second, lower height above the lamp base in the interior of the lamp vessel, and wherein the coating is disposed on a socket-proximate portion of the lamp vessel and extends beyond a maximum height above the lamp cap that is less than the first height and greater than the second height.
  • the coating which absorbs light from a predetermined spectral range reduces the glare effect emanating from the first filament, without weakening the light rays emitted by the first filament in the main emission direction, as a result of the coating, because the coating does not extend to the lamp vessel portion surrounding the first filament.
  • the abovementioned coating is arranged on the lamp vessel in the region of the second filament and is preferably designed so that the portion of the lamp vessel provided with the coating surrounds the second filament in an annular manner. This can be done by means of the coating on the lamp socket portion near the color temperature or the color of the emitted light from the second filament are changed.
  • this coating is designed such that it absorbs light from the long-wave spectral range (ie from the region of the red, yellow and green light) more strongly than light from the short-wave spectral range (ie from the region of the blue and violet light).
  • the dazzling effect of the light emanating from the first filament can be reduced and, in addition, the color temperature of the light emitted by the second filament can be raised to a value in the range from about 3500 Kelvin to 4500 Kelvin.
  • the invention has the above-described two-filament incandescent lamp has a further coating which is remote from the lamp base, remote base portion of the lamp vessel and extends in the direction of the lamp cap to a minimum height above the lamp base, which is greater than the sum of the Height of the first filament above the lamp cap and the extension of the first filament in the longitudinal direction of the lamp is. This further reduces the glare of the light emanating from the first filament.
  • FIG. 1 shows a schematic representation of the structure of the halogen incandescent lamps according to a first non-invention example.
  • These halogen incandescent lamps are a so-called H7 lamp intended for operation at a rated voltage of 12 volts in a motor vehicle.
  • the power consumption of this lamp is at an operating voltage of 13.2 volts about 55 watts.
  • This halogen incandescent lamp has a glassy, substantially cylindrical lamp vessel 100, which is provided at one end with a base 102. Within the lamp vessel 100, an axially aligned incandescent filament 103 is arranged, which are coated with a molybdenum tube wrapped Wendelab réelle each with a power supply wire 104, 105. The two power supply wires 104, 105 are each electrically conductively connected to an electrical connection 106, 107 of the base 102.
  • the lamp vessel 100 is made of quartz glass or hard glass, for example aluminosilicate glass.
  • the lamp vessel tip 101 is light impermeable and provided with a black coating.
  • the arranged in the immediate vicinity of the lamp base 102, near the base portion 1010 of the lamp vessel 101 is provided with a coating 108 on its outer surface. This coating extends from the lamp cap 102 to a maximum height H B above the lamp cap 102 that is equal to or less than the height H W of the filament 103 above the lamp cap 102.
  • the coating 108 extends annularly over the entire outer surface Surface of the arranged below the incandescent filament 103, near the base portion 1010 of the lamp vessel 100th
  • the coating 108 is, for example, an interference filter coating with a filter edge arranged in a narrow light wavelength range, in which the filter passes from high to low absorption, or a dip coating according to the US 6,369,510 for example, which absorbs yellow, red and green light more strongly than blue and violet light.
  • the filter edge is adjusted so that the interference filter absorbs long-wavelength light, in particular the red, yellow, and green light colors, more than short-wavelength light, such as blue and violet light.
  • the degree of absorption of the interference filter can be adjusted to the desired degree via additional absorber layers in the interference filter.
  • a dip coating according to the US 6,369,510 Both the degree of absorption and the color temperature of the coating 108 can be controlled via the layer thickness.
  • FIG. 2 a lamp according to the first embodiment of the invention is shown.
  • This lamp differs from the lamp according to the first non-invention example only in that the lamp vessel 100 on the outer surface of, in the immediate vicinity of the lamp vessel tip 101, the remote base lamp vessel portion 1011 has a further coating 109.
  • the in FIG. 2 illustrated lamp according to the first embodiment with the in FIG. 1 pictured lamp according to the first not belonging to the invention example.
  • the further coating 109 extends, starting from the edge of the dome 101, in the direction of the lamp cap 102 to a minimum height H M above the lamp cap 102, which is equal to or greater than the sum of the height H W of the filament 103 above the lamp cap Lamp base 102 and the extension L of the filament 103 in the longitudinal direction of the lamp.
  • the further coating 109 is constructed identical to the coating 108. In the case of the lamp according to the first exemplary embodiment of the invention, therefore, only the section of the lamp vessel 100 that surrounds the incandescent filament 103 in a ring-shaped manner is uncoated.
  • the coatings 108 and 109 may also, in a non-invention example, be made light-impermeable, or have different filter characteristics, so that they absorb light from different spectral regions to give the lamp a different appearance.
  • This lamp is a halogen incandescent lamp, in particular a H4 lamp, which is intended for use in the headlight of a motor vehicle.
  • This incandescent lamp has a glass lamp vessel 300 which is fixed in a metallic base 302.
  • the tip 301 of the lamp vessel 300 is formed opaque light, and provided for example with a black coating.
  • a first filament 303 for generating the low beam and a second filament 304 for generating the high beam and a Abblendkappe 305 are arranged within the lamp vessel 300.
  • the two filaments 303, 304 are made of tungsten and the Abblendkappe 305 consists of a Molybdänblech.
  • For holding and electrical power supply of the incandescent filaments 303, 304 are three power supply wires 307, 308, 309, which are made of molybdenum.
  • the power supply wires 307, 308, 309 are fixed in a fin 310 made of quartz glass, led out of the sealed end of the lamp vessel 300 and each connected to an electrical contact 320, 321 of the base 302.
  • the first end of the first filament 303 is connected to the first power supply wire 307.
  • the second end of the first filament 303 is fixed to the dimming cap 305.
  • the dimming cap 305, together with the first 307 and third power supply wire 309, serves as the power supply for the first filament 303.
  • the second filament 304 is fixed to the power supply wires 308, 309.
  • the pedestal-like section 3010 of the lamp vessel 300 arranged in the immediate vicinity of the lamp base 302 is provided with a coating 330 on its outer surface.
  • This coating 330 extends from the lamp base 302 to a maximum height H 1 above the lamp base 302 that is equal to or less than the height H 2 of the first filament 303 above the lamp base 302 and greater than the height H 4 of the second one
  • the coating 308 extends annularly over the entire outer surface of the socket-like portion 3010 of the lamp vessel 300 arranged beneath the first incandescent filament 303.
  • the coating 330 annularly surrounds the second filament 304.
  • the coating 330 is, for example, an interference filter coating with a filter edge arranged in a narrow light wavelength range, in which the filter passes from high to low absorption, or a dip coating according to the US 6,369,510 which absorbs yellow, red and green light more strongly than blue and violet light.
  • the filter edge is adjusted so that the interference filter absorbs long-wavelength light, in particular the light colors red, yellow and green stronger than short-wave light, such as blue and violet light.
  • the degree of absorption of the interference filter can be adjusted to the desired degree via additional absorber layers in the interference filter.
  • a dip coating according to the US 6,369,510 can the degree of absorption of the coating 330 and the color temperature of the light are controlled by the layer thickness.
  • the coating 330 reduces the glare of the light emanating from the first incandescent filament 303 and increases the color temperature of the light emanating from the second incandescent filament 304.
  • FIG. 4 a lamp according to the second embodiment of the invention is shown.
  • This lamp differs from the lamp according to the second non-invention example only in that the lamp vessel 300 on the outer surface of, in the immediate vicinity of the lamp vessel tip 301, the remote base lamp vessel portion 3011 has a further coating 340.
  • the further coating 340 extends, starting from the edge of the dome 301, in the direction of the lamp cap 302 to a minimum height H 3 above the lamp cap 302, which is equal to or greater than the sum of the height H 2 of the first filament 303 above the lamp base 302 and the extension L1 of the first filament 303 in the longitudinal extension direction of the lamp.
  • the further coating 340 is identical in construction to the coating 330.
  • only the first filament 303 is annular enclosing portion of the lamp vessel 300 formed uncoated.
  • the in FIG. 3 or 4 shown coating 330 may also be formed with stepwise or continuously reduced by the lamp cap in the direction of the lamp vessel tip 301 light absorption degree.
  • the coating 330 can be designed such that it has a lower absorption of light in the region surrounding the second incandescent filament 304, which extends between the height H4 and H1, than in the region between the height H4 and the lamp cap 302. In a simple manner This can be achieved by a reduced layer thickness of the coating 330 in the region between the height H4 and H1, which encloses the second filament 304.
  • 4 illustrated coating 330 but also be designed such that it extends only from the lamp cap 302 to the height H4 and thus the lamp vessel 300 in the region of the two filaments 303, 304 uncoated.
  • the lamp vessel tip 101, 301 instead of the black coating also have a different colored, such as a silver-colored coating.
  • a different colored coating such as a silver-colored coating.
  • the invention may also be applied to incandescent lamps having a filament oriented transversely to the lamp vessel axis, such as H3 lamps.

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  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Claims (6)

  1. Lampe comprenant un culot (102, 302) et une ampoule (100, 300) fixée dans celui-ci, ainsi qu'au moins un moyen d'éclairage (103, 303) disposé à l'intérieur de l'ampoule (100, 300), un revêtement (108, 330) absorbant la lumière étant situé sur la surface d'une partie (1010, 3010) de l'ampoule (100, 300) proche du culot, lequel revêtement s'étend jusqu'à une hauteur maximale (HB, H1) au-dessus du culot (102) qui est inférieure ou égale à la hauteur (HW, H2) à la hauteur de l'au moins un moyen d'éclairage (103, 303) au-dessus du culot (102, 302),
    et un second revêtement (109) absorbant la lumière étant situé sur une partie (1011, 3011) de l'ampoule (100, 300) éloignée du culot (102, 302), à l'opposé de celui-ci, lequel revêtement s'étend en direction du culot (102, 302) jusqu'à une hauteur minimale (HM, H3) au-dessus du culot (102, 302) qui est supérieure ou égale à la somme de la hauteur (HW, H2) de l'au moins un moyen d'éclairage (103, 303) au-dessus du culot (102, 302) et de l'étendue de l'au moins un moyen d'éclairage (L, L1) dans la direction de l'étendue longitudinale de la lampe, de sorte que le revêtement (108, 330) sur la partie (1010, 3010) proche du culot et le second revêtement (109) sur la partie (1011, 3011) de l'ampoule (100) éloignée du culot soient séparés par une partie d'ampoule dépourvue de revêtement entourant l'au moins un moyen d'éclairage (103, 303), caractérisée en ce que la partie d'ampoule dépourvue de revêtement est annulaire, et le revêtement (108, 330) et le second revêtement (109) absorbant partiellement la lumière et étant conçus de telle sorte qu'ils absorbent plus fortement la lumière de la région spectrale correspondant à lumière rouge, jaune et verte que la lumière de la région spectrale correspondant à la lumière bleue et violette.
  2. Lampe selon la revendication 1, le revêtement (108, 330) et le second revêtement (109) étant conçus en tant que revêtement formant filtre d'interférence dont le bord de filtre est réglé de sorte que le filtre d'interférence absorbe plus fortement la lumière de grande longueur d'onde des couleurs rouge, jaune et verte que la lumière de courte longueur d'onde des couleurs bleue et violette, ou en tant que revêtement au trempé absorbant plus fortement la lumière rouge, jaune et verte que la lumière bleue et violette.
  3. Lampe selon la revendication 1 ou 2, l'au moins un moyen d'éclairage étant un filament incandescent (103, 303).
  4. Lampe selon la revendication 1 ou 2, possédant, en tant que moyen d'éclairage, deux filaments incandescents (303, 304), le premier filament incandescent (303) étant situé à une première hauteur (H2) au-dessus du culot (302) et le second filament incandescent (304) étant situé à une seconde hauteur (H4), moins importante, au-dessus du culot (302) dans l'espace intérieur de l'ampoule (300), et le revêtement (330) situé sur la partie (3010) de l'ampoule (300) proche du culot s'étendant sur une hauteur maximale (H1) au-dessus du culot (302) qui est inférieure ou égale à la première hauteur (H2) et supérieure à la seconde hauteur (H4) .
  5. Lampe selon la revendication 4, la partie (3010) de l'ampoule (300) proche du culot, pourvue du revêtement (330), entourant le second filament incandescent (304) de manière annulaire.
  6. Lampe selon une ou plusieurs des revendications 1 à 5, conçue en tant que lampe de phare de véhicule automobile.
EP07847963.1A 2006-12-19 2007-12-07 Lampe avec une ampoule a revetement partiel Not-in-force EP2102892B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006060022A DE102006060022A1 (de) 2006-12-19 2006-12-19 Lampe mit einem teilweise beschichteten Lampengefäß
PCT/EP2007/063498 WO2008074657A2 (fr) 2006-12-19 2007-12-07 Lampe avec une ampoule à revêtement partiel

Publications (2)

Publication Number Publication Date
EP2102892A2 EP2102892A2 (fr) 2009-09-23
EP2102892B1 true EP2102892B1 (fr) 2016-11-30

Family

ID=39431407

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07847963.1A Not-in-force EP2102892B1 (fr) 2006-12-19 2007-12-07 Lampe avec une ampoule a revetement partiel

Country Status (5)

Country Link
EP (1) EP2102892B1 (fr)
DE (1) DE102006060022A1 (fr)
ES (1) ES2617752T3 (fr)
HU (1) HUE033106T2 (fr)
WO (1) WO2008074657A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008060782A1 (de) 2008-12-05 2010-06-10 Osram Gesellschaft mit beschränkter Haftung Lampe
DE102010002084A1 (de) 2010-02-18 2011-08-18 Osram Gesellschaft mit beschränkter Haftung, 81543 Halogenglühlampe für Fahrzeugscheinwerfer
WO2014207112A1 (fr) 2013-06-27 2014-12-31 Koninklijke Philips N.V. Lampe et agencement projecteur permettant d'obtenir une apparence de couleur dans un projecteur d'automobile
DE202013009984U1 (de) 2013-11-04 2013-11-26 Vosla Gmbh Halogenlampe für ein Kraftfahrzeug
USD757305S1 (en) 2015-02-27 2016-05-24 Osram Sylvania Inc. Lamp capsule with coating
US9396925B1 (en) 2015-02-27 2016-07-19 Osram Sylvania Inc. Partially coated vehicle lamp capsule
US10408406B1 (en) 2018-10-03 2019-09-10 Osram Sylvania Inc. Partially coated vehicle halogen lamp capsule for projector headlight

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1909394A1 (de) * 1968-03-13 1969-10-23 Philips Nv Verfahren zur Herstellung einer Halogengluehlampe,die mit einer einen Teil des abgestrahlten Lichtes abfangenden Abschirmung versehen ist
DE8600640U1 (de) * 1985-02-11 1986-06-12 N.V. Philips' Gloeilampenfabrieken, Eindhoven Gelbe Halogen-Autoglühlampe
EP0772378A2 (fr) * 1995-11-06 1997-05-07 Hyundai Motor Company Eclairage ajustable en couleur et en intensité pour automobiles; méthode d'ajustement associée
DE10247983A1 (de) * 2002-07-23 2004-02-05 Philips Intellectual Property & Standards Gmbh Lampe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1909394A1 (de) * 1968-03-13 1969-10-23 Philips Nv Verfahren zur Herstellung einer Halogengluehlampe,die mit einer einen Teil des abgestrahlten Lichtes abfangenden Abschirmung versehen ist
DE8600640U1 (de) * 1985-02-11 1986-06-12 N.V. Philips' Gloeilampenfabrieken, Eindhoven Gelbe Halogen-Autoglühlampe
EP0772378A2 (fr) * 1995-11-06 1997-05-07 Hyundai Motor Company Eclairage ajustable en couleur et en intensité pour automobiles; méthode d'ajustement associée
DE10247983A1 (de) * 2002-07-23 2004-02-05 Philips Intellectual Property & Standards Gmbh Lampe

Also Published As

Publication number Publication date
ES2617752T3 (es) 2017-06-19
WO2008074657A2 (fr) 2008-06-26
DE102006060022A1 (de) 2008-06-26
WO2008074657A3 (fr) 2009-03-19
EP2102892A2 (fr) 2009-09-23
HUE033106T2 (en) 2017-11-28

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