EP0750729B1 - Lampe a incandescence a reflecteur - Google Patents

Lampe a incandescence a reflecteur Download PDF

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Publication number
EP0750729B1
EP0750729B1 EP95915136A EP95915136A EP0750729B1 EP 0750729 B1 EP0750729 B1 EP 0750729B1 EP 95915136 A EP95915136 A EP 95915136A EP 95915136 A EP95915136 A EP 95915136A EP 0750729 B1 EP0750729 B1 EP 0750729B1
Authority
EP
European Patent Office
Prior art keywords
reflector
incandescent
axis
lamp according
luminous element
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.)
Expired - Lifetime
Application number
EP95915136A
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German (de)
English (en)
Other versions
EP0750729A1 (fr
Inventor
Ulrich Binder
Rolf Kiesel
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 EP0750729A1 publication Critical patent/EP0750729A1/fr
Application granted granted Critical
Publication of EP0750729B1 publication Critical patent/EP0750729B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures

Definitions

  • the invention is based on a reflector lamp according to the preamble of claim 1.
  • Such lamps are known from US Pat. No. 4,021,659 and from WO 92/17733.
  • the lamps described there have an unorganized axial filament.
  • the facets of the reflector are either flat or convex or concave.
  • an axial filament divided into individual sections is described in FIGS. 10 to 13, which is intended for use in reflector lamps.
  • the object of the present invention is to improve the homogeneity of the light radiation from reflector incandescent lamps, which are operated in particular with medium or high voltage.
  • the homogeneity of the illumination in particular in the case of lamps with several lamp body sections, can be considerably improved if the facets of the reflector consist of concave cylinder segments. It is essential, however, that the axes of the cylinder segments are aligned so that they lie in planes that enclose the reflector axis. In particular, these axes should be aligned approximately parallel to the reflector axis.
  • the particular advantage of the cylinder segments according to the invention is that this means that both lamps with an axial luminous element (in particular low-voltage lamps) and lamps whose luminous elements are composed of several approximately axially parallel sections, in particular high-voltage or medium-voltage lamps (this usually means voltages above 80 V) can be provided with homogeneous illumination.
  • the individual sections of the luminous body should not be inclined by more than 15 °, preferably at most 10 °, against the reflector axis. Examples are V-shapes or W-shapes or similar, in particular also shapes that are varied in mirror symmetry, such as U and M shapes.
  • very compact reflector lamps can also be realized by the features according to the invention.
  • a halogen incandescent lamp is advantageously used for this purpose.
  • the overall length can be shortened by the fact that for the the frame holding the lamp is dispensed with a quartz beam.
  • the frame parts are held directly in the pinch.
  • the luminous element can also be held by deforming the bulb (US Pat. No. 5,146,134).
  • a reflector bulb 1 for general lighting is shown. It consists of a high-voltage halogen incandescent lamp 2 with an output of 50 W (230 V), which is attached to the top of a pressed glass reflector 3 via two long power leads, for example with a diameter of 63 mm (PAR 20) or 95 mm (PAR 30) .
  • the reflector has a neck 4 which is fastened in a screw base 5.
  • the arc length of the edge 6b of the facet facing the reflector opening is longer than that of the edge 6a facing the apex 6c.
  • the Reflector formed from 17 rows of facets, the first and last rows having facets with a different structure.
  • the arrangement of the cylinder facets can be seen better in the plan view or side view of FIGS. 2a and 2b which merely shows the reflector.
  • the halogen incandescent lamp 2 has a W-shaped lamp 7, which is held by five frame wires 8, which are anchored in the pinch.
  • the sections 9 of the filament are aligned approximately axially parallel; they are inclined at most 10 ° to the reflector axis.
  • the reflector opening is covered by a lens 15.
  • FIG. 3 shows the light distribution of a lamp with cylinder facets, the axis of symmetry of which includes the reflector axis.
  • the homogeneity is much better than with a similar lamp, the cylinder facets (Fig. 4) are transverse to the reflector axis.
  • FIG. 5 shows yet another example of an advantageously usable lamp 2 with a W-shaped luminous element 7 'with four luminous sections 9.
  • the inner sections 9a are approximately the same length as the outer sections 9b. None of these sections is inclined more than 15 ° to the reflector axis.
  • the facets according to the invention are each matched to the luminous element.
  • the guide curve of the cylindrical facet surface can be selected to be circular, but also elliptical, parabolic or hyperbolic.
  • the generatrix of the facet can lie parallel to its own axis of symmetry, but also in the manner of a truncated cone to be inclined to.
  • this axis is defined by the center of the circle, with an elliptical generatrix e.g. through the midpoint between the two focal points, etc.
  • the lateral surface of the cylindrical facet is usually aligned parallel to its axis of symmetry. However, it is not excluded that the lateral surface, corresponding to a cone, is inclined against the axis of symmetry.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

Lampe à incandescence à réflecteur (1) à fonctionnement sous haute tension présentant des sections d'éléments lumineux (9) dont les axes sont sensiblement parallèles, et un réflecteur (3) dont les facettes sont formées par des segments cylindriques dont les axes sont approximativement parallèles.

Claims (11)

  1. Lampe à incandescence à réflecteur, constituée d'un réflecteur (3) et d'une lampe dont le corps (7) lumineux est sensiblement parallèle à l'axe du réflecteur, le réflecteur comportant une surface réfléchissante qui est formée essentiellement de facettes (6) semblables à des trapèzes, la majeure partie des facettes étant constituée de surfaces de cylindre convexes ayant un axe de symétrie associé. chaque axe de symétrie étant dans un plan qui passe par l'axe du réflecteur, caractérisée en ce que le corps (7) lumineux comporte plus d'un tronçon (8), au moins deux tronçons (8) étant disposés de manière peu près parallèle à l'axe, mais sans coïncider avec l'axe, et formant les tronçons éclairants.
  2. Lampe à incandescence à réflecteur suivant la revendication 1, caractérisée en ce que les axes de symétrie des surfaces de cylindre sont à peu près parallèles à l'axe du réflecteur.
  3. Lampe à incandescence à réflecteur suivant la revendication 1, caractérisée en ce que la lampe est conçue pour fonctionner à une tension d'au moins 80 V.
  4. Lampe à incandescence à réflecteur suivant la revendication 1, caractérisée en ce que le corps lumineux comprend deux tronçons à peu près parallèles à l'axe.
  5. Lampe à incandescence à réflecteur suivant la revendication 1, caractérisée en ce que le corps lumineux forme, par rapport au sommet (apex) du réflecteur un "W" ou un "V".
  6. Lampe à incandescence à réflecteur suivant la revendication 1, caractérisée en ce que les tronçons (8) du corps (7) lumineux ne sont pas inclinés de plus de 15°, notamment sont inclinés de moins de 10°, par rapport à l'axe du réflecteur.
  7. Lampe à incandescence à réflecteur suivant l'une des revendications précédentes, caractérisée en ce que la lampe est une lampe à incandescence à halogène.
  8. Lampe à incandescence à réflecteur suivant la revendication 7, caractérisée en ce que le corps lumineux est fixé par un support sans barre en quartz ou est fixé totalement sans support.
  9. Lampe à incandescence à réflecteur suivant la revendication 1, caractérisée en ce que la génératrice de la surface de cylindre s'étend parallèlement à son propre axe de symétrie ou est inclinée par rapport à cet axe à la façon d'un tronc de cône.
  10. Lampe à incandescence à réflecteur suivant la revendication 1, caractérisée en ce que la directrice de la surface de cylindre représente un segment d'une section conique, notamment d'un cercle, d'une ellipse, d'une parabole ou d'une hyperbole.
  11. Lampe à incandescence à réflecteur suivant la revendication 10, caractérisée en ce que la surface de cylindre est délimitée de manière similaire à un trapèze par quatre côtés, deux côtés étant formés par des directrices (6a, 6b) et deux côtés étant formés par des droites qui relient les extrémités des directrices.
EP95915136A 1994-04-19 1995-04-07 Lampe a incandescence a reflecteur Expired - Lifetime EP0750729B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4413370 1994-04-19
DE4413370A DE4413370A1 (de) 1994-04-19 1994-04-19 Reflektorglühlampe
PCT/DE1995/000474 WO1995028599A1 (fr) 1994-04-19 1995-04-07 Lampe a incandescence a reflecteur

Publications (2)

Publication Number Publication Date
EP0750729A1 EP0750729A1 (fr) 1997-01-02
EP0750729B1 true EP0750729B1 (fr) 1997-12-29

Family

ID=6515722

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95915136A Expired - Lifetime EP0750729B1 (fr) 1994-04-19 1995-04-07 Lampe a incandescence a reflecteur

Country Status (8)

Country Link
US (1) US5757113A (fr)
EP (1) EP0750729B1 (fr)
JP (1) JPH09505687A (fr)
CN (1) CN1097195C (fr)
CA (1) CA2188044C (fr)
DE (2) DE4413370A1 (fr)
HU (1) HUT75480A (fr)
WO (1) WO1995028599A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6080464A (en) * 1995-11-20 2000-06-27 Heraeus Med Gmbh Reflector for a radiating luminous source and use of the same
CN1049761C (zh) * 1997-09-26 2000-02-23 叶乃光 红外线反射膜电灯
US6586864B2 (en) 1998-05-21 2003-07-01 General Electric Company Reflector lamp having a reflecting section with faceted surfaces
DE10018831B4 (de) * 2000-04-15 2004-05-19 Markus Korsch Reflektoranordnung
CN1207509C (zh) * 2001-02-21 2005-06-22 皇家菲利浦电子有限公司 电灯
DE10302930A1 (de) * 2003-01-24 2004-07-29 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Reflektor und Reflektorlampe
US20040145910A1 (en) * 2003-01-29 2004-07-29 Guide Corporation (A Delaware Corporation) Lighting assembly
US20070279908A1 (en) * 2004-08-27 2007-12-06 Turhan Alcelik General Lighting Armature
DE102007016748A1 (de) * 2007-04-07 2008-10-09 Tetsuhiro Kano Reflektor für eine Leuchte
DE102007035528B9 (de) * 2007-07-26 2012-02-09 Erco Gmbh Leuchte
DE102007035396B4 (de) * 2007-07-26 2011-04-14 Erco Gmbh Leuchte
DE202007013205U1 (de) * 2007-07-26 2008-12-11 Erco Leuchten Gmbh Leuchte
US20090034271A1 (en) * 2007-08-01 2009-02-05 Markus Gorres Light fixture
DE112007003688A5 (de) 2007-12-18 2010-11-11 Osram Gesellschaft mit beschränkter Haftung Elektrische Reflektorlampe mit zwei im wesentlichen parallelen Leuchtkörper-Abschnitten

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5714360Y2 (fr) * 1974-12-27 1982-03-24
US4021659A (en) * 1975-10-30 1977-05-03 General Electric Company Projector lamp reflector
JPS5511709U (fr) * 1978-07-10 1980-01-25
HU198254B (en) * 1987-03-11 1989-08-28 Tungsram Reszvenytarsasag Projector lamp
US4833576A (en) * 1987-09-29 1989-05-23 General Electric Company Aluminum phosphate cement compositions and lamp assemblies containing same
IT1248422B (it) * 1989-12-06 1995-01-16 Franco Berti Faretto a lampada alogena, provvisto di un paraboloide riflettente in materiale ceramico
US5146134A (en) * 1990-03-15 1992-09-08 Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen M.B.H. Halogen incandescent lamp, particularly for operation from power networks, and method of its manufacture
US5272408A (en) * 1991-05-09 1993-12-21 Gte Products Corporation Lamp and reflector assembly
DE69130738T2 (de) * 1991-04-03 1999-09-02 Flowil International Lighting (Holding) B.V. Reflektor mit lampe
JPH0562651A (ja) * 1991-08-30 1993-03-12 Toshiba Lighting & Technol Corp ミラー付光源
US5367219A (en) * 1991-11-18 1994-11-22 U.S. Philips Corporation Electric reflector lamp for use with IEC standard

Also Published As

Publication number Publication date
DE59501176D1 (de) 1998-02-05
JPH09505687A (ja) 1997-06-03
DE4413370A1 (de) 1995-10-26
HU9602890D0 (en) 1996-12-30
CA2188044C (fr) 2000-11-21
CN1146237A (zh) 1997-03-26
EP0750729A1 (fr) 1997-01-02
US5757113A (en) 1998-05-26
WO1995028599A1 (fr) 1995-10-26
CN1097195C (zh) 2002-12-25
HUT75480A (en) 1997-05-28

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