EP0435394B1 - Appareil d'éclairage - Google Patents

Appareil d'éclairage Download PDF

Info

Publication number
EP0435394B1
EP0435394B1 EP90203389A EP90203389A EP0435394B1 EP 0435394 B1 EP0435394 B1 EP 0435394B1 EP 90203389 A EP90203389 A EP 90203389A EP 90203389 A EP90203389 A EP 90203389A EP 0435394 B1 EP0435394 B1 EP 0435394B1
Authority
EP
European Patent Office
Prior art keywords
louvre
luminaire
strips
window
luminous window
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
EP90203389A
Other languages
German (de)
English (en)
Other versions
EP0435394A1 (fr
Inventor
Josephus Willibrord Venderbosch
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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 Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of EP0435394A1 publication Critical patent/EP0435394A1/fr
Application granted granted Critical
Publication of EP0435394B1 publication Critical patent/EP0435394B1/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
    • 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

Definitions

  • the invention relates to a luminaire comprising:
  • Such luminaires are generally known.
  • a louvre attachment for such a luminaire is described, for example, in US 4,268,897 and in US 4,429,354.
  • each louvre strip is in the base of the triangle in the known attachments. This is a logical location because this seam is then invisible, irrespective from which position the luminaire is viewed.
  • the louvre strips do not have an apex angle in the proper sense of the word in their cross-sections, but they are rounded off instead, since bending is only possible with a certain radius of curvature.
  • a disadvantage of this is that the effective size of the luminous window is restricted by the apexes of the louvre strips. The larger the number of strips per unit length of the lamp, the stronger the restriction of the effective size of the luminous window.
  • the effective size of the luminous window is here understood to mean the actual light transmitting opening of this window.
  • CH 539, 239 discloses louvre attachments made of synthetic material.
  • Each louvre strip has a slot with multiple interruptions at its apex so as to form openings through which air may be blown to ventilate the space in which the attachment is used.
  • the invention has for its object inter alia to provide a luminaire of the kind described in the opening paragraph having a louvre attachment of a simple construction in which the luminous window has a great effective size, while nevertheless damage to the finish of the louvre strips in the luminous window is avoided.
  • this object is achieved in that the louvre strips have their seams in the luminous window and in that the lateral edge portions of each louvre strip lie sideways against one another.
  • the louvre strips have a dimension of not more than twice the thickness of the material from which they were formed, measured in longitudinal direction of the lamp at the level of the luminous window. Not only is a louvre strip very thin in this location as a result, and the size of the luminous window very great, but the material is not bent in the luminous window either, so that damage to a reflecting layer, for example an anodized layer, is avoided.
  • the construction is especially suitable for use in luminaires and attachments with optical reflector systems.
  • the louvre strips need only be folded about lines which lie at a distance from one another, i.e. in order to shape the base of the triangular cross-section. This makes it possible to give the strips an accurate, pre-determined shape, the more so since the lateral edge portions lie sideways against one another. Such an accurate shape could not be realised if the strips, for example, should have had a circularly bent surface remote from the luminous window instead of a surface coinciding with the base of a triangle.
  • the lateral edge portions bear on one another under pressure for extra stability.
  • This pressure may be generated through elastic deformation in the louvre strip material.
  • the surface remote from the luminous window may give local reflections onto other mirroring surfaces, especially in reflectorizing louvre attachments, for example on the first and the second reflector.
  • this effect is counteracted by means of several tongues which have been punched from said surface and pressed to the outside. It is favourable if the tongues belong to a first and a second series, which point in mutually opposing directions. The series may be positioned separately or intermixed.
  • the luminaire of Fig. 1 has a housing 1 comprising a luminous window 2 and means 3 for holding an elongate lamp having a longitudinal direction 4 in said housing 1 along said window 2 and for connecting said lamp to a supply source, the means 3 defining the said longitudinal direction 4.
  • these means 3 are formed by a pair of conventional holders for a straight, tubular low-pressure mercury vapour fluorescent lamp.
  • a U-shaped bent fluorescent lamp or a fluorescent lamp consisting of parallel series-connected closed tube sections could be used in a luminaire of adapted dimensions, the luminaire comprising means suitable for holding and connecting the lamp in question.
  • the luminaire may be provided with means for accommodating several lamps with the same longitudinal direction.
  • the luminaire has a metal louvre attachment 5 in the luminous window 2.
  • the attachment 5 has (see also Fig. 2) a first 6 and a second reflector 7 in the longitudinal direction 4 of the lamp, which reflectors are interconnected by several parallel louvre strips 8 (see also Fig. 4) having seams 10, which are folded in cross-section into a substantially triangular shape from a strip with lateral edge portions 9.
  • the triangle of the cross-section has its apex 11 in the luminous window 2 and its base in a plane 12 remote from the luminous window inside the housing. Its legs 13 are curved towards eachother.
  • the degree of curvature is immaterial for the nature of the invention and may be very slight or considerable, subject to the optical specification of the luminaire.
  • the louvre strips 8, according to the invention, have their seams 10 in the luminous window 2 and the lateral edge portions 9 of each strip 8 lie sideways against one another.
  • the lateral edge portions 9 bear on one another with pressure through elastic deformation of the louvre strip material, for example anodized aluminium.
  • tongues 14 are punched from the surface 12 of the louvre strips 8 remote from the luminous window 2 and bent outwards.
  • the tongues 14 belong to a first series 15 or to a second series 16, which point in mutually opposing directions and are positioned separately.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Storage Of Fruits Or Vegetables (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Lasers (AREA)

Claims (5)

  1. Appareil d'éclairage comportant:
    - un boîtier (1) présentant une fenêtre lumineuse (2),
    - des moyens (3) conçus pour recevoir dans ladite fenêtre lumineuse (2) une lampe allongée s'étendant dans une direction longitudinale (4) et pour relier ladite lampe à une source d'alimentation, lesdits moyens définissant ladite direction longitudinale,
    - une grille de défilement métallique (5) disposée dans la fenêtre lumineuse (2), comportant un premier (6) et un second réflecteur (7) s'étendant dans la direction longitudinale (4) de la lampe, interconnectés par plusieurs bandes de grille parallèles (8) présentant des coutures (10), en coupe transversale lesdites bandes sont courbées sensiblement en triangle à partir d'une bande présentant des parties de bord latérales (9), ledit triangle ayant son angle de sommet (11) situé dans la fenêtre lumineuse (2) et sa base à l'intérieur du boîtier (1) dans un plan (12) à l'opposé de la fenêtre lumineuse, triangle dont les jambes (13) s'étendent de façon courbée l'une vers l'autre,
    caractérisé en ce que les bandes de grille (8) ont leur couture (10) située dans la fenêtre lumineuse (2) et en ce que les parties de bord latérales (9) de chaque bande de grille (8) se situent latéralement l'une contre l'autre.
  2. Appareil d'éclairage selon la revendication 1, caractérisé en ce que les parties de bord latérales (9) sont pressées l'une contre l'autre.
  3. Appareil d'éclairage selon la revendication 2, caractérisé en ce que les bandes de grille (8) présentent une couche réfléchissante.
  4. Appareil d'éclairage selon la revendication 3, caractérisé en ce que la surface (12) des bandes de grille (8) située à l'opposé de la fenêtre lumineuse (2) présente plusieurs languettes (14) découpées dans ladite surface et pliées vers l'extérieur.
  5. Appareil d'éclairage selon la revendication 4, caractérisé en ce que les languettes (14) appartiennent à une première (15) et à une deuxième série (16) orientées en directions mutuellement opposées.
EP90203389A 1989-12-27 1990-12-18 Appareil d'éclairage Expired - Lifetime EP0435394B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8903160 1989-12-27
NL8903160 1989-12-27

Publications (2)

Publication Number Publication Date
EP0435394A1 EP0435394A1 (fr) 1991-07-03
EP0435394B1 true EP0435394B1 (fr) 1994-12-07

Family

ID=19855832

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90203389A Expired - Lifetime EP0435394B1 (fr) 1989-12-27 1990-12-18 Appareil d'éclairage

Country Status (5)

Country Link
EP (1) EP0435394B1 (fr)
AT (1) ATE115257T1 (fr)
DE (1) DE69014844T2 (fr)
DK (1) DK0435394T3 (fr)
ES (1) ES2066960T3 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4243659A1 (de) * 1992-12-23 1994-06-30 Licentia Gmbh Metallraster für eine Leuchte
NL9301557A (nl) * 1993-09-09 1995-04-03 Simon Cornelis Van Putten Dwarslamel voor een lichtbak.
DE69421979D1 (de) * 1993-09-09 2000-01-13 Veko Products B V Querlamelle für Leuchtenkasten
NL9402049A (nl) * 1994-12-06 1996-07-01 Etap Nv Verlichtingsinrichting.
US5526241A (en) * 1994-12-27 1996-06-11 Ferrell; Richard Interior lamp for motor vehicle
PL180878B1 (pl) * 1995-02-14 2001-04-30 Philips Electronics Nv Oprawa oświetleniowa
DE29609669U1 (de) * 1996-02-08 1996-08-29 Philips Electronics N.V., Eindhoven Leuchte
DE19612197A1 (de) * 1996-03-27 1997-10-02 Zumtobel Licht Verfahren zum Herstellen eines im Querschnitt V-förmigen Reflektors für eine Leuchte und ein im Querschnitt V-förmiger Reflektor
SE9701216L (sv) * 1997-04-04 1998-04-27 Fagerhults Ab Sätt att framställa ett bländskydd, en reflektor eller dylikt till en elektrisk belysningsarmatur samt ett bländskydd, en reflektor elle dylikt, som framställts enligt sättet
GB2341669A (en) * 1998-09-15 2000-03-22 Interlux Limited Light controller for light fitting
ATE382827T1 (de) 1999-12-27 2008-01-15 Ludwig Leuchten Kg Leuchte

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2617919A (en) * 1947-09-17 1952-11-11 Revere Copper & Brass Inc Laterally expansible lighting fixture and part therefor
DE2833894C2 (de) * 1978-08-02 1980-07-31 Siemens Ag, 1000 Berlin Und 8000 Muenchen Leuchte für eine stabförmige Leuchtstofflampe
US4407011A (en) * 1980-12-08 1983-09-27 Donn Incorporated Integrated lighting systems for suspended ceilings or the like
DE3519498A1 (de) * 1985-05-31 1986-12-04 Wolfgang 7000 Stuttgart Schäffler Parabolspiegelartiges reflektorelement fuer leuchtroehren

Also Published As

Publication number Publication date
ATE115257T1 (de) 1994-12-15
DE69014844T2 (de) 1995-06-29
DE69014844D1 (de) 1995-01-19
DK0435394T3 (da) 1995-05-01
ES2066960T3 (es) 1995-03-16
EP0435394A1 (fr) 1991-07-03

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