EP0122972B1 - Armature lumineuse non-éblouissante pour source allongée - Google Patents

Armature lumineuse non-éblouissante pour source allongée Download PDF

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Publication number
EP0122972B1
EP0122972B1 EP83112800A EP83112800A EP0122972B1 EP 0122972 B1 EP0122972 B1 EP 0122972B1 EP 83112800 A EP83112800 A EP 83112800A EP 83112800 A EP83112800 A EP 83112800A EP 0122972 B1 EP0122972 B1 EP 0122972B1
Authority
EP
European Patent Office
Prior art keywords
light source
angle
light
reflectors
longitudinal
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
Application number
EP83112800A
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German (de)
English (en)
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EP0122972A1 (fr
Inventor
Christian Bartenbach
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to AU25445/84A priority Critical patent/AU561926B2/en
Publication of EP0122972A1 publication Critical patent/EP0122972A1/fr
Application granted granted Critical
Publication of EP0122972B1 publication Critical patent/EP0122972B1/fr
Expired 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/02—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using parallel laminae or strips, e.g. of Venetian-blind type
    • 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 present invention relates to a luminaire with a rod-shaped light source and to both longitudinal sides of the light source up to this extending such concave reflectors that all rays emitted transversely to the light source directly or after reflection at a steeper than a luminaire-specific fade-out angle a in the transverse direction and with transversely to the vertical central longitudinal plane of the light source, approximately V-shaped lamellae with reflecting, concave curved side surfaces in such a way that all rays emitted in the longitudinal direction of the light source emerge in the longitudinal direction directly or after reflection at a steeper than a lamp-specific cut-out angle ⁇ and the upper sides the slats are closed by flat reflective covers.
  • the surface of the lamellae running transversely to the light source is therefore designed to be reflective in order to also reflect the light rays hitting the lamellae from above and finally to let them emerge from the luminaire. Otherwise, the efficiency of the luminaire would be reduced not insignificantly, since the lamellae must be arranged at relatively small distances from one another, the intended purpose of masking out emerging rays should be achieved.
  • a major disadvantage of the known design is that the rays reflected from the top of the lamellae emerge for a considerable part flatter than specified, and thus a reflection of the light source is created for the viewer, which ultimately leads to glare. This reflection is particularly annoying when working on display devices. To avoid this, it has already been proposed to blacken the top of the slats or to make them open at the top; in both cases, however, the already mentioned loss of efficiency occurs, which can be up to 20%.
  • the covers of the slats for guiding light into the space above the lamp have sections inclined to the vertical lamp plane. These inclined sections can be concavely curved, for example. Due to this configuration, some of the rays reflected by the light source may be reflected in the space above the light source by the inclined covers, but it is precisely in the critical areas where the lamellae pass into the reflectors that reflections still occur, which are related to the lead to undesirable brightening.
  • the invention is based on the object, starting from a lamp of the type described above, to improve it in such a way that the entire covering area of the slats reflects the incident light rays in such a way that complete freedom from glare is achieved.
  • the lamellae are shaped such that two lamella sections are formed which are arranged symmetrically with respect to the central vertical longitudinal plane, the flat upper sides of which, starting from below the light source, at an inclination angle corresponding approximately to the cut-out angle ⁇ , obliquely to the longitudinal plane and parallel and with a small angle Distance to the tangent extending at the same angle of inclination to the light source to the reflectors and the two inclined slat sections are connected by a slat section running perpendicular to the central longitudinal plane of the light source, the length of which is smaller than the diameter of the light source.
  • the cover of the slats is therefore not curved design, the cover of the slats, but the covering of the blade flat and the louver itself has a geneig to the longitudinal plane of the light source - th course, from below the light source to above the light source.
  • This course of the slats according to the invention ensures that reflections in the disturbing blinking angle range, which is defined by the blanking angle ⁇ , are avoided on the reflectors, since the slats run in this area.
  • complete absence of glare is achieved below the fade-out angle a, without a significant loss in efficiency due to absorption of the light rays striking the top of the slats.
  • the theoretically best solution is a flat top, which would touch the light source tangentially.
  • the invention provides for a tangential approach of the top of the lamellae to the light source, however, a constructionally determined distance is maintained.
  • Lights of the known type see Fig. 1, have a rod-shaped light source (fluorescent tube) 1, around which a reflector 2 is arranged. Its contour is determined in such a way that each light beam reflected by it is steeper than that Beam 3 leaves the lamp, which touches the light source at its lower edge and the lower edge of the reflector 2.
  • the angle a is therefore the cross-hatching angle.
  • slats 4 are provided transversely to the longitudinal axis of the light source 1, the height and mutual spacing of which are selected such that all rays are reflected by the concave side surfaces 5 , which leave the light source flatter than that beam 6 which touches the upper or lower edge of the opposite side faces 5 of two adjacent slats 4.
  • This beam 6 forms an angle ⁇ with the horizontal.
  • the angle ⁇ is the blanking angle in the longitudinal direction and is generally of the same order of magnitude as the angle a in the transverse direction.
  • the slats 4 have a course of their upper side 8 in such a way that two slat sections are formed, which are arranged symmetrically to the central vertical longitudinal plane of the light source 1, the upper sides 8, starting from below the light source 1, at an inclination angle corresponding approximately to the fade-out angle ⁇ run obliquely to the horizontal to the longitudinal plane with opposite increase. This results in a tangential but non-contact approach of the flat upper sides 8 to the light source 1.
  • the two lamella sections end in the side reflectors 2.
  • the two inclined slat sections are connected by a slat section 10 running perpendicular to the central longitudinal plane of the light source 1, so that a horizontal slat course results below the light source 1.
  • a slat course corresponding to the surface of the light source would be ideal here.
  • the horizontal slat section is preferable for manufacturing reasons.
  • the lower longitudinal edge of the slats 4 runs parallel to the top 8 of the slats.
  • the width of the lamella according to the invention does not differ from that of the embodiment known in FIGS. 1 and 2, and light losses which would occur with a wider lamella shape are avoided.
  • the beam 7a in FIG. 3 which leaves the light source 1 at the same point and at the same angle as the beam 7 in FIG. 1, the beam 7a is deflected upward more than the beam 7 and leaves the one according to the invention Luminaire after reflection on reflector 2 is very steep, so that glare-free radiation from light source 1 takes place.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Glass Compositions (AREA)
  • Inorganic Insulating Materials (AREA)
  • Polymerisation Methods In General (AREA)

Claims (2)

1. Armature lumineuse comprenant une source lumineuse (1) ayant la forme d'une barre et des réflecteurs (2) s'étendant sur les deux côtés longitudinaux de la source lumineuse (1) jusqu'au-dessus de celle-ci et ayant une courbure concave telle que tous les rayons émis transversalement par rapport à la source lumineuse (1) sortent directement ou, après avoir été réfléchis, transversalement sous un angle plus aigu qu'un angle diaphragmé a spécifique pour luminaires, et des languettes (4) s'étendant transversalement par rapport au plan longitudinal médian vertical de la source lumineuse (1), de section droite sensiblement en V, possédant des faces latérales réfléchissantes ayant une courbure concave telle que tous les rayons émis dans la direction longitudinale de la source lumineuse (1) sortent directement ou, après avoir été réfléchis, dans la direction longitudinale sous un angle plus aigu qu'un angle diaphragmé a specifique pour les luminaires, et que les faces supérieures (8) des languettes (4) soient fermées par des caches réfléchissants, caractérisé en ce que les languettes (4) ont une forme telle que deux portions de languette soient constituées et disposées symétriquement par rapport au plan longitudinal médian vertical et dont les faces supérieures planes s'étendent, en partant d'en dessous de la source lumineuse (1), sous un angle d'inclinaison correspondant essentiellement à l'angle diaphragmé a, obliquement par rapport au plan longitudinal et parallèles, à faible distance, à une tangente, s'étendant sous le même angle d'inclinaison vers la source lumineuse, jusqu'aux réflecteurs (2), et que les deux portions inclinées de la languette sont reliées par une portion de languette (10) s'étendant verticalement par rapport au plan longitudinal médian de la source lumineuse (1) en dessous de celle-ci, dont la longueur est inférieure au diamètre de la source lumineuse (1 ).
2. Armature lumineuse selon la revendication 1, caractérisée en ce que le bord longitudinal inférieur des languettes (4) s'étend parallèlement à la face supérieure (8) des languettes.
EP83112800A 1983-04-08 1983-12-20 Armature lumineuse non-éblouissante pour source allongée Expired EP0122972B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU25445/84A AU561926B2 (en) 1983-04-08 1984-03-09 Nonglare light fixture

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1246/83 1983-04-08
AT0124683A AT381577B (de) 1983-04-08 1983-04-08 Blendungsfreie leuchte fuer eine stabfoermige lichtquelle

Publications (2)

Publication Number Publication Date
EP0122972A1 EP0122972A1 (fr) 1984-10-31
EP0122972B1 true EP0122972B1 (fr) 1987-10-28

Family

ID=3509757

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83112800A Expired EP0122972B1 (fr) 1983-04-08 1983-12-20 Armature lumineuse non-éblouissante pour source allongée

Country Status (7)

Country Link
US (1) US4539628A (fr)
EP (1) EP0122972B1 (fr)
JP (1) JPS60205903A (fr)
AT (2) AT381577B (fr)
CA (1) CA1220460A (fr)
DE (1) DE3374213D1 (fr)
ZA (1) ZA841999B (fr)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8330299U1 (de) * 1983-10-18 1984-04-12 Semperlux Gmbh, 1000 Berlin Parabolisches lamellenelement fuer langgestreckte lichtquellen
FR2554549B1 (fr) * 1983-11-03 1988-03-11 Sabir Dispositif anti-eblouissement pour luminaires a sources lineaires
DE3406447C2 (de) * 1984-02-22 1995-03-16 Christian Bartenbach Abschirmung für eine Leuchte mit stabförmiger Lampe
JPS644168Y2 (fr) * 1984-12-20 1989-02-03
HU195593B (en) * 1985-10-01 1988-05-30 Tungsram Reszvenytarsasag Light-source, preferably for public lighting and industrial applications
US4750097A (en) * 1985-10-25 1988-06-07 Optech Inc. Lamp reflector assembly
US4754381A (en) * 1986-01-02 1988-06-28 Downs James W Ellipsoidal reflector concentration of energy system
BE905874A (nl) * 1986-12-08 1987-04-01 Etap Nv Tegen storende lichtspotjes beschermend verlichtingstoestel met spiegelreflektoren.
DE8702921U1 (de) * 1987-02-25 1987-07-30 Metaprint Metallverarbeitung GmbH, 8000 München Leuchte
US4888668A (en) * 1987-09-28 1989-12-19 Siemens Aktiengesellschaft Mirror light unit
DE3900202A1 (de) * 1989-01-05 1990-07-12 Thorn Licht Gmbh Mit einer stabfoermigen leuchtstofflampe bestueckte rasterleuchte
JP2917996B2 (ja) * 1989-06-19 1999-07-12 東芝ライテック株式会社 照明器具
US5469341A (en) * 1993-09-10 1995-11-21 Public Safety Equipment, Inc. Light bar with reflector assembly
AU700856B2 (en) * 1995-02-14 1999-01-14 Koninklijke Philips Electronics N.V. Luminaire
FR2734044B1 (fr) * 1995-05-11 1997-08-01 Vial Henri Noel Grille de defilement pour eclairage de type fluorescent
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
US5528478A (en) * 1995-10-04 1996-06-18 Cooper Industries, Inc. Lighting fixture having a parabolic louver
FR2742213B1 (fr) * 1995-12-08 1998-02-27 Hode Jean Pierre Optique reflechissante de plafond
USD377231S (en) * 1996-03-19 1997-01-07 Cooper Industries, Inc. Luminaire
WO1998015775A1 (fr) * 1996-10-08 1998-04-16 Philips Electronics N.V. Appareil d'eclairage
EP0959295B1 (fr) * 1998-05-19 2006-10-04 Koninklijke Philips Electronics N.V. Luminaire
GB9908728D0 (en) * 1999-04-17 1999-06-09 Luxonic Lightng Plc A lighting appliance
CN1268871C (zh) * 1999-11-12 2006-08-09 皇家菲利浦电子有限公司 不用薄片的照明设备
EP1259756A2 (fr) * 2000-02-29 2002-11-27 LT-LICHT-TECHNIK GmbH Ensemble reflecteur pour une lampe
WO2003064918A2 (fr) * 2002-01-28 2003-08-07 Koninklijke Philips Electronics N.V. Luminaire
AT500432B8 (de) * 2003-04-07 2007-02-15 Bartenbach Christian Beleuchtungsvorrichtung
GB2415770A (en) * 2004-07-01 2006-01-04 Jamie Barrett A lamp sculpture
NL1027815C2 (nl) 2004-12-17 2006-06-20 Lichtholland B V Lamel voor een reflector van een verlichtingsarmatuur met een buislamp.
DE112014004071T5 (de) * 2013-09-05 2016-06-09 Applied Materials, Inc. Lampenquerschnitt für reduzierte Wendelerwärmung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8106507U1 (de) * 1981-03-07 1981-08-27 Trilux-Lenze Gmbh + Co Kg, 5760 Arnsberg "leuchte mit einer langgestreckten lampe und einem darunter angeordneten spiegelraster"

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
US3124310A (en) * 1964-03-10 lipscomb
US1153443A (en) * 1910-04-30 1915-09-14 Cooper Hewitt Electric Co Reflector for vapor-lamps.
US2299276A (en) * 1941-03-07 1942-10-20 Kirlin Ivan Disk louver
DE1287031B (de) * 1964-06-25 1969-01-16 Schmitt Spiegelreflektoren fuer oberflaechenleuchtende Lichtquellen, insbesondere Leuchtstofflampen
US3382357A (en) * 1966-05-03 1968-05-07 Holophane Co Inc Reflector for street lighting luminaire
US3560729A (en) * 1969-02-18 1971-02-02 Milton Liberman Lighting fixture
JPS5369486A (en) * 1976-11-30 1978-06-20 Shiruban Aaru Shiemitsutsu And Illuminator
DE3014365A1 (de) * 1980-04-15 1981-10-22 Trilux-Lenze Gmbh + Co Kg, 5760 Arnsberg Leuchte mit einer langgestreckten lampe und einem darunter angeordneten spiegelraster
JPS5761206A (en) * 1980-09-30 1982-04-13 Mitsubishi Electric Corp Illuminator
US4407011A (en) * 1980-12-08 1983-09-27 Donn Incorporated Integrated lighting systems for suspended ceilings or the like

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8106507U1 (de) * 1981-03-07 1981-08-27 Trilux-Lenze Gmbh + Co Kg, 5760 Arnsberg "leuchte mit einer langgestreckten lampe und einem darunter angeordneten spiegelraster"

Also Published As

Publication number Publication date
EP0122972A1 (fr) 1984-10-31
ATE30462T1 (de) 1987-11-15
US4539628A (en) 1985-09-03
ZA841999B (en) 1985-06-26
JPS60205903A (ja) 1985-10-17
AT381577B (de) 1986-11-10
JPH0418641B2 (fr) 1992-03-27
CA1220460A (fr) 1987-04-14
ATA124683A (de) 1986-03-15
DE3374213D1 (en) 1987-12-03

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