EP0235652A2 - Armature lumineuse non éblouissante avec écran réflecteur en forme de bande - Google Patents

Armature lumineuse non éblouissante avec écran réflecteur en forme de bande Download PDF

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Publication number
EP0235652A2
EP0235652A2 EP87102125A EP87102125A EP0235652A2 EP 0235652 A2 EP0235652 A2 EP 0235652A2 EP 87102125 A EP87102125 A EP 87102125A EP 87102125 A EP87102125 A EP 87102125A EP 0235652 A2 EP0235652 A2 EP 0235652A2
Authority
EP
European Patent Office
Prior art keywords
light source
light
reflector
reflectors
luminaire
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.)
Granted
Application number
EP87102125A
Other languages
German (de)
English (en)
Other versions
EP0235652B1 (fr
EP0235652A3 (en
Inventor
K.-H. Jacob
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.)
Daume & Jordan & Co KG GmbH
Original Assignee
Daume & Jordan & Co KG 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6294424&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0235652(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Daume & Jordan & Co KG GmbH filed Critical Daume & Jordan & Co KG GmbH
Priority to AT87102125T priority Critical patent/ATE83546T1/de
Publication of EP0235652A2 publication Critical patent/EP0235652A2/fr
Publication of EP0235652A3 publication Critical patent/EP0235652A3/de
Application granted granted Critical
Publication of EP0235652B1 publication Critical patent/EP0235652B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/10—Combinations of only two kinds of elements the elements being reflectors and screens
    • 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/08—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures
    • F21V11/14—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures with many small apertures
    • 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
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F21V7/0016—Reflectors for light sources providing for indirect lighting on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes

Definitions

  • the invention relates to a luminaire with a rod-shaped, in particular horizontally arranged light source, with on both long sides of the light source extending from below to above it, such concave, in particular parabolically curved side reflectors that all light beams emitted transversely to the light source directly or after reflection under one Exit a horizontal steeper angle than a luminaire-specific blanking angle a in the transverse direction, with an anti-glare reflector arranged below the light source in such a way that all light rays emitted in the longitudinal direction of the light source exit directly or after reflection at an angle steeper than the luminaire horizontally than a luminaire-specific blanking angle ⁇ in the longitudinal direction, as well as two voice reflectors connecting the side reflectors on the front.
  • Such a lamp is known from European publication 0 122 972.
  • the design of the side reflectors of this known lamp ensures that when viewing the lamp in the transverse direction of the light source up to a certain angle to the horizontal, the blanking angle or, no disturbing glare occurs due to light falling directly from the light source into the eye of the beholder.
  • the anti-glare reflector arranged below the light source serves to suppress direct light in the longitudinal direction of the light source up to a certain angle to the horizontal, the cut-out angle ⁇ .
  • the known luminaire thus creates uniform and practically interference-free lighting, but it has the disadvantage that the anti-glare reflector arranged below the light source consists of slats extending transversely to the vertical central longitudinal plane of the light source, which extend between the side reflectors and are fastened to them.
  • this training makes the manufacture of the lamp very complex and expensive, since many individual parts have to be produced and subsequently assembled.
  • the manufacture of the slats is particularly complex, since they are approximately V-shaped in cross section with reflective and concavely curved side surfaces. This training requires expensive manufacturing tools.
  • the present invention therefore has for its object to provide a lamp of the initially described type, which ensures both a very good dimming of emitted in the transverse and the longitudinal direction of the light source, is also such simple construction as' that it inexpensive to manufacture as well as being easy to replace the light source and easy to clean the reflectors.
  • the anti-glare reflector consists of a strip-shaped flat material and extends at a short distance below the light source parallel to it between the stimulus reflectors, the width of the anti-glare reflector ⁇ the width of the vertical projection of the light source and the anti-glare reflector in its area has a plurality of light exit openings.
  • the anti-glare reflector of the lamp according to the invention is thus filter-like.
  • the luminaire-specific cut-out angle ⁇ is determined in the longitudinal direction between the horizontal and a straight line running in the longitudinal direction of the light source through two edges of a light exit opening that are diagonally opposite one another in the longitudinal section of the cut-off reflector.
  • the anti-glare reflector arranged below the light source covers the light source from below, but vertical light emission is guaranteed through the light exit openings, whereby good efficiency is maintained.
  • the configuration of the light exit openings according to the invention ensures a fade-out effect, in particular in the longitudinal direction, but also in the transverse direction of the light source, the fade-out angle being determined by the dimensions of the light exit openings.
  • the dimensions of the light exit openings are influenced in particular by their vertical length and their horizontal area. Therefore, the desired blanking angle ⁇ in the longitudinal direction, but also the blanking angle o a in the transverse direction, can advantageously be ensured by special shaping of the light exit openings.
  • the anti-glare reflector according to the invention runs without contact to the side reflectors between them, so that the inner surfaces of the side reflectors are smooth and thus easy to clean. But also the anti-glare reflector itself is due to its stripe-shaped Training easy to clean, wherein it is advantageously releasably attached to the forehead reflectors with its narrow edges. It is therefore very easy to change the light source, since only the anti-glare reflector needs to be removed, for example, to be folded down.
  • the anti-glare reflector is very easy to manufacture, for example from sheet metal by a single stamping process. It is therefore very inexpensive to manufacture. Its attachment to the lamp is also unproblematic, since it only needs to be attached to the front reflectors of the lamp with its narrow edges.
  • a luminaire according to the invention has a rod-shaped, horizontally arranged light source 1 - (fluorescent tube).
  • the side reflectors 2, 3 can be designed symmetrically (FIG. 1) or asymmetrically (FIG. 2) with respect to the longitudinal vertical center plane 5.
  • the side reflectors 2, 3 determine a fade-out angle a in the transverse direction of the light source 1.
  • This angle a lies between the horizontal 6 and a connecting line 7 forming a tangent to the light source 1 between the lower edges 8 of the side reflectors 2, 3 and the lower periphery of the light source 1
  • the curvature of the side reflectors 2, 3 ensures that light rays, even after reflection on the reflective inner surface of the side reflectors 2, 3, always exit from the luminaire according to the invention at a steeper angle than the angle a (see the indicated light rays 11 in FIGS. 1 and 12 in Fig. 2).
  • the lamp according to the invention also has two end reflectors 13, 14 which connect the side reflectors 2, 3 on the end face.
  • the light source 1 is held in the usual way by sockets 15, 16.
  • a dimming reflector 17 is arranged below the light source 1, which according to the invention consists of a strip-shaped flat material and is located at a short distance below the light source 1 parallel to it between the end reflectors 13 , 14 extends.
  • the width of the anti-glare reflector 17 corresponds at least to the width of the vertical projection of the light source 1, since this covers the light source 1 over the entire area from below. So that there is no loss of light due to this cover, but instead the luminaire according to the invention maintains a high degree of efficiency, the anti-glare reflector 17 according to the invention has a large number of light exit openings 18 in its surface.
  • a blanking angle ⁇ in the longitudinal direction between the horizontal 6 and a lengthwise direction of the light source is determined by two straight lines 21 running diagonally opposite one another as seen in the longitudinal section of the anti-glare reflector 17 (see FIGS. 3 and 4).
  • the width of the anti-glare reflector 17 is ⁇ the distance, measured perpendicular to the central plane 5 running vertically between the side reflectors 2, 3, of two connecting lines 22, each forming an upper tangent of the light source 1, between the light source 1 and the lower edges 8 of the Side reflectors 2, 3.
  • the anti-glare reflector 17 has a diffusely or specularly reflecting surface 23 at least on its side pointing in the direction of the light source 1. Furthermore, it is advantageous in this embodiment if the anti-glare reflector 17 is only in the Area of its surface determined by vertical projection of the light source 1 has light exit openings 18, while its edge areas 24 are free of openings. The opening-free edge regions 24 thus serve to cover and dazzle the light source 1 and to reflect part of the light, but also give the dimming reflector 17 the necessary stability. In the event that the side reflectors 2, 3 are asymmetrical (FIG. 2), the anti-glare reflector 17 can also have edge regions 24 of different widths.
  • the light exit openings 18 are preferably evenly distributed, arranged in a grid-like manner on the specified surface area of the anti-glare reflector 17, and can be designed as punched-outs with a round cross section (FIGS. 4a and b).
  • the light exit openings 18 can be formed as deep-drawn impressions with a preferably round cross section and preferably annular edge webs 25 (FIGS. 4c to f).
  • the anti-glare angle ⁇ in the longitudinal direction but of course also an anti-glare angle in the transverse direction, since the anti-glare reflector 17 is arranged below the light source 1. It may therefore be advantageous for certain applications to design the light exit openings 18 with a cross-section other than round in order to ensure that light beams emitted in the longitudinal direction pass through the light exit openings 18 at a different angle than light beams emitted in the transverse direction. Possible cross sections of the light exit openings 18 are oval or rectangular, for example.
  • a special design of the light exit openings 18 can thus also achieve that the desired fade-out angle a in the transverse direction between the horizontal 6 and one in the transverse direction of the light source 1 through two diagonally opposite edges of a light exit opening 18 as seen in the cross section of the dipped reflector 17 (see For example, straight line 7 in FIG. 1) is determined.
  • the side reflectors 2, 3, which previously determined the angle ⁇ could be shortened in their vertical extent compared to the embodiment shown, as a result of which the manufacturing costs of the luminaire according to the invention could advantageously be further reduced due to material savings.
  • the anti-glare reflector 17 advantageously consists of sheet metal, in particular aluminum sheet, or else of a reflectively coated plastic.
  • the anti-glare reflector 17 is detachably fastened according to the invention with its narrow edges 26 to the end reflectors 13, 14, so that it can be easily removed for changing the light source 1.
  • it can be pivotally mounted on one side of one of the end reflectors 13, 14, while its other narrow side has means for latching with the opposite end reflector 13 or 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
EP87102125A 1986-02-19 1987-02-14 Armature lumineuse non éblouissante avec écran réflecteur en forme de bande Expired - Lifetime EP0235652B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87102125T ATE83546T1 (de) 1986-02-19 1987-02-14 Blendungsfreie leuchte mit streifenfoermigen abblendreflektor.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3605226 1986-02-19
DE19863605226 DE3605226A1 (de) 1986-02-19 1986-02-19 Blendungsfreie leuchte mit streifenfoermigem abblendreflektor

Publications (3)

Publication Number Publication Date
EP0235652A2 true EP0235652A2 (fr) 1987-09-09
EP0235652A3 EP0235652A3 (en) 1989-08-02
EP0235652B1 EP0235652B1 (fr) 1992-12-16

Family

ID=6294424

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87102125A Expired - Lifetime EP0235652B1 (fr) 1986-02-19 1987-02-14 Armature lumineuse non éblouissante avec écran réflecteur en forme de bande

Country Status (3)

Country Link
EP (1) EP0235652B1 (fr)
AT (1) ATE83546T1 (fr)
DE (2) DE3605226A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0538727A1 (fr) * 1991-10-24 1993-04-28 ZUMTOBEL LICHT GmbH Réflecteur pour dispositif d'éclairage
WO2001069123A1 (fr) * 2000-03-10 2001-09-20 Accu-Sort Systems, Inc. Systeme d'eclairage haute efficacite comportant un reflecteur de securite pour ampoule
EP1154200A2 (fr) 2000-05-10 2001-11-14 Regent Beleuchtungskörper AG Distributeur de lumière pour un système d'éclairage, système d'éclairage et utilisation d' un système d'éclairage
EP1467139A2 (fr) 2003-04-07 2004-10-13 Christian Bartenbach Dispositif d'éclairage
GB2479216A (en) * 2010-04-01 2011-10-05 John Stephenson Control of fluorescent lamps used to back illuminate posters
WO2014024063A1 (fr) * 2012-08-09 2014-02-13 Koninklijke Philips N.V. Lampe pour expérience d'éclairage naturel

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4115836C2 (de) * 1991-05-15 1999-11-25 Jordan Reflektoren Gmbh & Co Leuchte mit einer Reflektoranordnung und einem Abblendkörper
AU6475296A (en) * 1995-08-04 1997-03-05 Pang Teng Ong Process for producing the profile of reflectors for a cylindical source of light and reflector obtained according to thi process
DE29519708U1 (de) * 1995-12-12 1997-04-10 Zumtobel Licht Leuchte mit wenigstens einem langgestreckten Leuchtmittel
DE19644959A1 (de) * 1996-10-29 1998-04-30 Berchtold Gmbh & Co Geb Operationsleuchte
DE19648310A1 (de) * 1996-11-21 1998-05-28 Zumtobel Licht Leuchte mit einer Lampe und mindestens einem Lichtdämpfungsteil
DE19958551A1 (de) * 1999-12-04 2001-06-21 Erhard Holz Gmbh Vorsatzprofil für Gehäudefassaden
DE10353645B4 (de) * 2003-07-10 2008-06-19 Siteco Beleuchtungstechnik Gmbh Leuchte mit asymmetrischer Lichtabstrahlung
DE202005019916U1 (de) * 2005-12-19 2007-04-19 Tobias Grau Gmbh Leuchte, insbesondere für Bildschirmarbeitsplatz

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3724346A (en) * 1971-09-22 1973-04-03 Gte Sylvania Inc Reflector extension for lamp unit
US3860903A (en) * 1974-03-26 1975-01-14 Westinghouse Electric Corp High output low brightness ventilated luminaire
FR2303305A1 (fr) * 1975-03-07 1976-10-01 Rollei Werke Franke Heidecke Projecteur de studio de forte puissance lumineuse et de grande surface de rayonnement avec lampe eclair munie d'un couvercle partiellement transparent
FR2347610A1 (fr) * 1976-04-07 1977-11-04 Vulkan Werk Gmbh Lampadaire pour chaussees a sens unique, plus particulierement destine au terre-plein central de celles-ci
WO1985000434A1 (fr) * 1983-07-06 1985-01-31 Hughes Aircraft Company Obturateur pour source de radiation d'une zone etendue
US4622624A (en) * 1983-06-10 1986-11-11 Electri-Cable Assemblies, Inc. Under shelf task lighting fixture

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3724346A (en) * 1971-09-22 1973-04-03 Gte Sylvania Inc Reflector extension for lamp unit
US3860903A (en) * 1974-03-26 1975-01-14 Westinghouse Electric Corp High output low brightness ventilated luminaire
FR2303305A1 (fr) * 1975-03-07 1976-10-01 Rollei Werke Franke Heidecke Projecteur de studio de forte puissance lumineuse et de grande surface de rayonnement avec lampe eclair munie d'un couvercle partiellement transparent
FR2347610A1 (fr) * 1976-04-07 1977-11-04 Vulkan Werk Gmbh Lampadaire pour chaussees a sens unique, plus particulierement destine au terre-plein central de celles-ci
US4622624A (en) * 1983-06-10 1986-11-11 Electri-Cable Assemblies, Inc. Under shelf task lighting fixture
WO1985000434A1 (fr) * 1983-07-06 1985-01-31 Hughes Aircraft Company Obturateur pour source de radiation d'une zone etendue

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0538727A1 (fr) * 1991-10-24 1993-04-28 ZUMTOBEL LICHT GmbH Réflecteur pour dispositif d'éclairage
WO2001069123A1 (fr) * 2000-03-10 2001-09-20 Accu-Sort Systems, Inc. Systeme d'eclairage haute efficacite comportant un reflecteur de securite pour ampoule
EP1154200A2 (fr) 2000-05-10 2001-11-14 Regent Beleuchtungskörper AG Distributeur de lumière pour un système d'éclairage, système d'éclairage et utilisation d' un système d'éclairage
US6457844B2 (en) 2000-05-10 2002-10-01 Regent Beleuchtungskoerper Ag Light distributor for a lighting device and lighting device and use of a lighting device
EP1154200A3 (fr) * 2000-05-10 2002-10-16 Regent Beleuchtungskörper AG Distributeur de lumière pour un système d'éclairage, système d'éclairage et utilisation d' un système d'éclairage
EP1467139A2 (fr) 2003-04-07 2004-10-13 Christian Bartenbach Dispositif d'éclairage
AT500432A1 (de) * 2003-04-07 2005-12-15 Bartenbach Christian Beleuchtungsvorrichtung
AT500432B1 (de) * 2003-04-07 2006-03-15 Bartenbach Christian Beleuchtungsvorrichtung
GB2479216A (en) * 2010-04-01 2011-10-05 John Stephenson Control of fluorescent lamps used to back illuminate posters
WO2014024063A1 (fr) * 2012-08-09 2014-02-13 Koninklijke Philips N.V. Lampe pour expérience d'éclairage naturel

Also Published As

Publication number Publication date
EP0235652B1 (fr) 1992-12-16
ATE83546T1 (de) 1993-01-15
EP0235652A3 (en) 1989-08-02
DE3605226A1 (de) 1987-08-27
DE3783051D1 (de) 1993-01-28

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