EP0138747A1 - Parabolic strip element for elongated lamps - Google Patents

Parabolic strip element for elongated lamps Download PDF

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Publication number
EP0138747A1
EP0138747A1 EP84730107A EP84730107A EP0138747A1 EP 0138747 A1 EP0138747 A1 EP 0138747A1 EP 84730107 A EP84730107 A EP 84730107A EP 84730107 A EP84730107 A EP 84730107A EP 0138747 A1 EP0138747 A1 EP 0138747A1
Authority
EP
European Patent Office
Prior art keywords
webs
transverse
transverse webs
element according
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.)
Granted
Application number
EP84730107A
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German (de)
French (fr)
Other versions
EP0138747B1 (en
Inventor
Armin Bansbach
Dieter Dipl.-Ing. Albert
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.)
Semperlux GmbH
Original Assignee
Semperlux 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 Semperlux GmbH filed Critical Semperlux GmbH
Priority to AT84730107T priority Critical patent/ATE32135T1/en
Publication of EP0138747A1 publication Critical patent/EP0138747A1/en
Application granted granted Critical
Publication of EP0138747B1 publication Critical patent/EP0138747B1/en
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

Definitions

  • the invention relates to a parabolic lamella element for elongated light sources according to the preamble of the main claim.
  • Such lamella elements are used in particular for shading or glare control with elongated light sources such as. B. fluorescent lamps, cold cathode lamps or the like. And are usually made of plastic or light metal with a mirrored or colored, preferably white surface. While the longitudinal and transverse glare control can be carried out constructively without major difficulties, this is not the case with the equally important diagonal glare control. So far, this problem has not been mastered.
  • the invention is therefore based on the object to provide a reliable diagonal glare in the direction of view in addition to an optimal longitudinal and transverse glare control in a lamella element of the type mentioned.
  • the lamp elements consist of longitudinal webs 1 and transverse webs (slats) 2.
  • the slat elements are equipped with a locking mechanism 4 made of plastic or metal and can can be clipped into sheet metal or aluminum channels without tools.
  • the longitudinal webs 1 are parabolic or cylindrical in shape or wound in stages; however, in extreme cases, as indicated at 11, they can also run straight.
  • the transverse webs 2 are designed approximately parabolically on the outside and are concave at the upper edges 7. They are also for. Material saving cut out at 12 V-shaped. This measure prevents disturbing reflections from a light source 3 in the interior of the lights from the upper edge of the lamella 7. This glare-free effect can be enhanced by keeping the V-cutouts 12 black on the inside.
  • the lower edges of the transverse webs 2 can have a straight shape 5 or a convex shape 8 or, like the upper edges 7, also have a concave shape 6.
  • the transverse web leaf height increases sharply from the central region AB to the side regions (FIGS. 2 and 6), as does the leaf thickness b1 to b 2 (FIGS. 3, 4, 7, 8) from the inside to the outside increases.
  • the light passage openings 10 in FIGS. 1 and 5 are convex in shape.
  • the parabolically approximately cylindrical or straight design of the longitudinal webs 1, 11 and the transverse webs (lamellae) 2 produces a predetermined cut-off angle ⁇ of the light source 3 in the longitudinal direction (FIG. 9) and in the transverse direction (FIG. 10 ⁇ and ⁇ ; FIG. 11 ⁇ and 1).
  • the light source 3 is shown in FIG. 10 and in FIG. 11 Glued to the transverse direction with the angle ⁇ , the transverse reflection of the light source 3 takes place via the mirrored or white parabolically shaped (approximately cylindrical) surface 1 with the radiation angle Y.
  • the light source is glare-free at transverse angles ⁇ .
  • the longitudinal glare is achieved by the increment "S" (Fig.
  • the cut-off angle represented by the points "b" and "b '" in FIGS. 1, 2, 5, 6 is increased to such an extent that that the light source 3 and its mirror images are adequately glare-free even in the diagonal viewing direction.

Abstract

1. Louvre for elongated light sources, comprising longitudinal webs (1) and V-shaped transverse webs (2), the sides of said transverse webs in cross section, are designed approximately parabolic and, in longitudinal direction, have a concave upper edge (7), characterized in that the transverse webs (2), starting from their centre (A-B), increase towards the lateral longitudinal webs (1) in height and in width.

Description

Die Erfindung betrifft ein parabolisches Lamellenelement für langgestreckte Lichtquellen gemäß dem Oberbegriff des Hauptanspruchs.The invention relates to a parabolic lamella element for elongated light sources according to the preamble of the main claim.

Derartige Lamellenelemente dienen insbesondere zur Beschattung bzw. Entblendung bei langgestreckten Lichtquellen wie z. B. Leuchtsto fflampen, Kaltkathodenlampen od. dgl. und sind meistens aus Kunststoff oder Leichtmetall mit verspiegelter oder farbiger, vorzugsweise weißer Oberfläche hergestellt. Während die Längs-und Querentblendung in Blickrichtung konstruktiv ohne größere Schwierigkeiten durchführbar erscheint, ist dies bei der ebenso wichtigen Diagonalentblendung nicht der Fall. Dieses Problem konnte bisher nicht beherrscht werden.Such lamella elements are used in particular for shading or glare control with elongated light sources such as. B. fluorescent lamps, cold cathode lamps or the like. And are usually made of plastic or light metal with a mirrored or colored, preferably white surface. While the longitudinal and transverse glare control can be carried out constructively without major difficulties, this is not the case with the equally important diagonal glare control. So far, this problem has not been mastered.

Der Erfindung liegt daher die Aufgabe zugrunde, bei einem Lamellenelement der eingang erwähnten Art neben einer optimalen Längs- und Querentblendung zusätzlich auch eine zuverlässige Diagonalentblendung in Blickrichtung zu schaffen.The invention is therefore based on the object to provide a reliable diagonal glare in the direction of view in addition to an optimal longitudinal and transverse glare control in a lamella element of the type mentioned.

Diese Aufgabe wird erfindungsgemäß mit den im Kennzeichen des Hauptanspruchs angegebenen Mitteln gelöst.This object is achieved with the means specified in the characterizing part of the main claim.

Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.Advantageous developments of the invention are specified in the subclaims.

Die Erfindung wird nachstehend anhand von in der Zeichnung dargestellten Ausführungsbeispielen des Erfindungsgegenstandes näher erläutert. Es zeigen

  • Fig. 1 eine Unteransicht einer ersten Ausführungsform der Querstege,
  • Fig. 2 eine Vorderansicht zu Fig. 1,
  • Fig. 3 einen Schnitt gemäß der Linie AB in Fig. 2,
  • Fig. 4 einen Schnitt gemäß der Linie CD in Fig. 2,
  • Fig. 5 eine Unteransicht einer zweiten Ausführungsform der Querstege,
  • Fig. 6 eine Vorderansicht zu Fig. 5,
  • Fig. 7 einen Schnitt gemäß Linie AB in Fig. 6,
  • Fig. 8 einen Schnitt gemäß Linie CD in Fig. 6,
  • Fig. 9 ein Reflektionsschema an einem Teillängsschnitt durch die Blattmitte der Querstege,
  • Fig. 10 ein Reflektionsschema zu Fig. 6,
  • Fig. 11 ein Reflektionsschema zu Fig. 2.
The invention is explained in more detail below with reference to exemplary embodiments of the subject matter shown in the drawing. Show it
  • 1 is a bottom view of a first embodiment of the crosspieces,
  • 2 is a front view of FIG. 1,
  • 3 shows a section along the line AB in FIG. 2,
  • 4 shows a section along the line CD in FIG. 2,
  • 5 is a bottom view of a second embodiment of the crosspieces,
  • 6 is a front view of FIG. 5,
  • 7 shows a section along line AB in FIG. 6,
  • 8 shows a section along line CD in FIG. 6,
  • 9 is a reflection diagram on a partial longitudinal section through the center of the sheet of the crosspieces,
  • 10 shows a reflection diagram for FIG. 6,
  • 11 shows a reflection diagram for FIG. 2.

Die Leuchtenelemente bestehen aus Längsstegen 1 und Querstegen (Lamellen) 2. Die Lamellenelemente sind mit einem Rastmechanismus 4 aus Kunststoff oder Metall ausgerüstet und können werkzeuglos in Blech- oder Aluminiumkanäle eingeclipst werden.The lamp elements consist of longitudinal webs 1 and transverse webs (slats) 2. The slat elements are equipped with a locking mechanism 4 made of plastic or metal and can can be clipped into sheet metal or aluminum channels without tools.

Die Längsstege 1 sind innen parabolisch oder auch zylindrisch oder in Stufen gewickelt geformt; sie können aber auch im Extremfall, wie bei 11 angedeutet, gerade verlaufen. Die Querstege 2 sind außen angenähert parabolisch gestaltet und an den Oberkanten 7 konkav ausgebildet. Außerdem sind sie zur. Materialeinsparung bei 12 V-förmig ausgeschnitten. Durch diese Maßnahme werden störende Reflexe einer Lichtquelle 3 im Innenraum der Leuchten von der Oberkante der Lamelle 7 vermieden. Diese entblendende Wirkung kann dadurch verstärkt werden, daß die V-Ausschnitte 12 innen schwarz gehalten werden.The longitudinal webs 1 are parabolic or cylindrical in shape or wound in stages; however, in extreme cases, as indicated at 11, they can also run straight. The transverse webs 2 are designed approximately parabolically on the outside and are concave at the upper edges 7. They are also for. Material saving cut out at 12 V-shaped. This measure prevents disturbing reflections from a light source 3 in the interior of the lights from the upper edge of the lamella 7. This glare-free effect can be enhanced by keeping the V-cutouts 12 black on the inside.

Die Unterkanten der Querstege 2 können eine gerade Form 5 oder eine konvexe Form 8 aufweisen oder wie die Oberkanten 7 auch eine konkave Form 6 haben.The lower edges of the transverse webs 2 can have a straight shape 5 or a convex shape 8 or, like the upper edges 7, also have a concave shape 6.

In allen Ausführungsformen nimmt jedoch gemäß der Erfindung die Quersteg-Blatthöhe vom Mittelbereich A-B zu den Seitenbereichen stark zu (Fig. 2 und 6), wie auch die Blattdicke b1zu b2 (Fig. 3, 4, 7, 8) von innen nach außen zunimmt. Die Lichtdurchtrittsöffnungen 10 in Fig. 1 und 5 sind dadurch konvex geformt.In all embodiments, however, according to the invention, the transverse web leaf height increases sharply from the central region AB to the side regions (FIGS. 2 and 6), as does the leaf thickness b1 to b 2 (FIGS. 3, 4, 7, 8) from the inside to the outside increases. As a result, the light passage openings 10 in FIGS. 1 and 5 are convex in shape.

Die parabolisch angenähert zylindrische oder auch gerade Ausbildung der Längsstege 1, 11 und der Querstege (Lamellen) 2 erzeugt einen vorbestimmten Abblendwinkel α der Lichtquelle 3 in Längsrichtung (Fig. 9) und in Querrichtung (Fig. 10 β und γ; Fig. 11 β und 1 ). Die Lichtquelle 3 ist in Fig. 10 und in Fig. 11 in Querrichtung mit dem Winkel β entblendet, die Querreflexion der Lichtquelle 3 erfolgt über die verspiegelte oder weiße parabolisch geformte (in Annäherung zylindrische) Fläche 1 mit dem Abstrahlungswinkel Y . Bei Querwinkeln < β ist die Lichtquelle entblendet. Die Längsentblendung wird erreicht durch das Schrittmaß "S" (Fig. 9) der Querstege 2 sowie durch das parabolisch geformte Lamellenblatt 2 (in Annäherung zylindrisch geformt). Strahlen in Längsrichtung ausgehend vom Punkt "a''"(Fig. 9; Fig. 1; Fig. 5) zum Punkt "a " können nur in WinkeIn # α die Lamelle passieren, alle weiteren Lichtstrahlen 9 in Längsrichtung werden mit Winkeln ν> α reflektiert. Die Lamelle sorgt mit den Winkeln "α " in Längsrichtung und " β" in Querrichtung für die Entblendung der Lichtquelle 3.The parabolically approximately cylindrical or straight design of the longitudinal webs 1, 11 and the transverse webs (lamellae) 2 produces a predetermined cut-off angle α of the light source 3 in the longitudinal direction (FIG. 9) and in the transverse direction (FIG. 10 β and γ; FIG. 11 β and 1). The light source 3 is shown in FIG. 10 and in FIG. 11 Glued to the transverse direction with the angle β, the transverse reflection of the light source 3 takes place via the mirrored or white parabolically shaped (approximately cylindrical) surface 1 with the radiation angle Y. The light source is glare-free at transverse angles <β. The longitudinal glare is achieved by the increment "S" (Fig. 9) of the crosspieces 2 and by the parabolically shaped lamella blade 2 (approximately cylindrical shape). Rays in the longitudinal direction starting from point "a '" (Fig. 9; Fig. 1; Fig. 5) to point "a" can only pass the lamella in WinkeIn # α, all other light beams 9 in the longitudinal direction are at angles ν> α reflects. With the angles "α" in the longitudinal direction and "β" in the transverse direction, the lamella provides glare control for the light source 3.

Der Winkel der überaus wichtigen Diagonalentblendung, dargestellt in Fig. 1 und Fig. 5 zwischen den Punkten "b" und ''b' " wird durch folgende Maßnahmen stark vergrößert:

  • Die Blatthöhe der Lamellen (Fig. 2 und Fig. 6) nimmt durch die konkave Krümmung der Oberkante 7 vom Mittelbereich A-B zu den Seitenbereichen C-D stark an Höhe zu, wie das Verhältnis h1 :h2 in Fig. 3 und 4 bzw. 7 und 8 erkennen läßt. In der Ausführung Fig. 2 ist die untere Lamellenform gerade 5 oder zur Verbesserung des Leuchtenbetriebswirkungsgrades konkav 6 ausgeführt.
The angle of the extremely important diagonal glare control, shown in FIG. 1 and FIG. 5 between points "b" and '' b '", is greatly increased by the following measures:
  • The leaf height of the lamellae (FIGS. 2 and 6) increases greatly in height due to the concave curvature of the upper edge 7 from the central region AB to the side regions CD, like the ratio h 1 : h 2 in FIGS. 3 and 4 and 7 and 8 shows. In the embodiment of FIG. 2, the lower lamella shape is straight 5 or concave 6 to improve the lighting operating efficiency.

Durch diese Maßnahmen wird der durch die Punkte "b" und "b' " in Fig. 1, 2, 5, 6 wiedergegebene Abblendwinkel so weit vergrößert, daß die Lichtquelle 3 und deren Spiegelbilder auch in der diagonalen Blickrichtung hinreichend entblendet sind.By means of these measures, the cut-off angle represented by the points "b" and "b '" in FIGS. 1, 2, 5, 6 is increased to such an extent that that the light source 3 and its mirror images are adequately glare-free even in the diagonal viewing direction.

Durch die Anhebung der Blatthöhe h zu den Seitenflächen 1 hin wird auch die Blattdicke im oberen Bereich verstärkt, Fig. 3 "b1" zu Fig. 4 "b2 und Fig. 7 "b1" zu Fig. 8 "b 2" . Dadurch entsteht in Fig. 1 und Fig. 5 eine konvexe Durchtrittsöffnung 10, was zur Vergrößerung des Winkels der Diagonalentblendung beiträgt.By increasing the sheet height h towards the side faces 1, the sheet thickness is also increased in the upper region, FIG. 3 "b 1 " to Fi g. 4 "b 2 and Fig. 7" b 1 "to Fig. 8" b 2 ". This creates a convex passage opening 10 in Fig. 1 and Fig. 5, which contributes to increasing the angle of the diagonal glare control.

Claims (6)

1. Parabolisches Lamellenelement für langgestreckte Lichtquellen bestehend aus Längsstegen und Querstegen, wobei die Querstege im Querschnitt angenähert parabolisch gestaltet sind und eine konkave Oberkante aufweisen, d a - durch gekennzeichnet, daß die Querstege (2) von der Blattmitte (A-B) zu den seitlichen Längsstegen (1) hin in der Höhe zunehmen (Fig. 2 und 6).1. Parabolic lamella element for elongated light sources consisting of longitudinal webs and crossbars, the crossbars being approximately parabolic in cross-section and having a concave upper edge, since - characterized in that the crossbars (2) from the center of the blade (AB) to the side longitudinal webs ( 1) Increase in height (Fig. 2 and 6). 2. Lamellenelement nach Anspruch 1, dadurch gekennzeichnet, daß die Unterkante (8) der Querstege (2) konvex gestaltet ist (Fig. 6).2. lamella element according to claim 1, characterized in that the lower edge (8) of the transverse webs (2) is convex (Fig. 6). 3. Lamellenelement nach Anspruch 1, dadurch gekennzeichnet, daß die Unterkante (6) der Querstege (2) konkav gestaltet ist (Fig. 2).3. lamella element according to claim 1, characterized in that the lower edge (6) of the transverse webs (2) is concave (Fig. 2). 4. Lamellenelement nach Anspruch 1, dadurch gekennzeichnet, daß die Unterkante (5) der Querstege (2) gerade gestaltet ist (Fig. 2).4. lamella element according to claim 1, characterized in that the lower edge (5) of the crosspieces (2) is straight (Fig. 2). 5. Lamellenelement nach einem der Ansprüche 1 bis 4, d a - durch gekennzeichnet, daß die Breite der Oberkante (7) der Querstege (2) von der Blattmitte (A-B) nach den Seiten hin zunimmt (Fig. 3 und 4; 7 und 8).5. lamella element according to one of claims 1 to 4, since - characterized in that the width of the upper edge (7) of the transverse webs (2) increases from the center of the sheet (AB) towards the sides (Fig. 3 and 4; 7 and 8 ). 6. Lamellenelement nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Durchtrittsöffnung (10) zwischen je zwei Querstegen (2) konvex gestaltet ist (Fig. 1 und 5).6. lamellar element according to one of claims 1 to 5, characterized in that the passage opening (10) between two transverse webs (2) is convex (Fig. 1 and 5).
EP84730107A 1983-10-18 1984-10-05 Parabolic strip element for elongated lamps Expired EP0138747B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84730107T ATE32135T1 (en) 1983-10-18 1984-10-05 PARABOLIC BLADE ELEMENT FOR ELONGED LIGHT SOURCES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8330299U 1983-10-18
DE19838330299U DE8330299U1 (en) 1983-10-18 1983-10-18 PARABOLIC BLADE ELEMENT FOR LONG-STRETCHED LIGHT SOURCES

Publications (2)

Publication Number Publication Date
EP0138747A1 true EP0138747A1 (en) 1985-04-24
EP0138747B1 EP0138747B1 (en) 1988-01-20

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ID=6758155

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84730107A Expired EP0138747B1 (en) 1983-10-18 1984-10-05 Parabolic strip element for elongated lamps

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EP (1) EP0138747B1 (en)
AT (1) ATE32135T1 (en)
DE (2) DE8330299U1 (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4882662A (en) * 1987-02-17 1989-11-21 Siemens Aktiengesellschaft Grid of lamellae for a lamp
EP0643259A1 (en) * 1993-09-09 1995-03-15 van Putten, Simon Cornelis A cross lamella for a light box
NL9301557A (en) * 1993-09-09 1995-04-03 Simon Cornelis Van Putten Transverse lamella for a light box
NL9302169A (en) * 1993-12-13 1995-07-03 Simon Cornelis Van Putten Transverse lamella for a light box
WO1996025623A1 (en) * 1995-02-14 1996-08-22 Philips Electronics N.V. Luminaire
FR2738623A1 (en) * 1995-09-13 1997-03-14 Philips Eclairage Fluorescent light fitting with improved louvred cover
EP0959295A2 (en) * 1998-05-19 1999-11-24 Koninklijke Philips Electronics N.V. Luminaire
NL1011025C2 (en) * 1999-01-14 2000-07-17 Juliette Simone Catharina Van Fluorescent lighting assembly has transverse laminae which have narrow section and provide greater light output than from conventional assembly
EP1113219A3 (en) * 1999-12-27 2002-02-06 GEBRUEDER LUDWIG GmbH Lamp
GB2369671A (en) * 2000-12-04 2002-06-05 Steven Peter Webb Reflector for a linear light source and louvre controller incorporating the same
WO2003038336A1 (en) * 2001-11-01 2003-05-08 Koninklijke Philips Electronics N.V. Luminaire and lamellae grid for this
WO2003064918A2 (en) * 2002-01-28 2003-08-07 Koninklijke Philips Electronics N.V. Luminaire with lambellas, for tubular lamp
GB2350419B (en) * 1999-04-13 2003-10-01 Siteco Beleuchtungstech Gmbh Improvements in or relating to light fittings
WO2006018285A1 (en) * 2004-08-16 2006-02-23 Zumtobel Lighting Gmbh. Raster arrangement
DE10040501B4 (en) * 2000-08-18 2006-11-30 Siteco Beleuchtungstechnik Gmbh Round light, grid for round light and slat for round light
WO2010121483A1 (en) * 2009-04-24 2010-10-28 富昱电机股份有限公司 Lighting fixture for lamp tube

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3024355A (en) * 1959-12-07 1962-03-06 Willis L Lipscomb Curved, cellular light control panel
EP0061526A1 (en) * 1981-03-27 1982-10-06 Siemens Aktiengesellschaft Luminaire

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8106507U1 (en) * 1981-03-07 1981-08-27 Trilux-Lenze Gmbh + Co Kg, 5760 Arnsberg "LUMINAIRE WITH A LONG ELASTIC LAMP AND A MIRROR GRID BELOW IT"
AT381577B (en) * 1983-04-08 1986-11-10 Bartenbach Christian GLARE-FREE LAMP FOR A ROD-SHAPED LIGHT SOURCE

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3024355A (en) * 1959-12-07 1962-03-06 Willis L Lipscomb Curved, cellular light control panel
EP0061526A1 (en) * 1981-03-27 1982-10-06 Siemens Aktiengesellschaft Luminaire

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4882662A (en) * 1987-02-17 1989-11-21 Siemens Aktiengesellschaft Grid of lamellae for a lamp
EP0643259A1 (en) * 1993-09-09 1995-03-15 van Putten, Simon Cornelis A cross lamella for a light box
NL9301557A (en) * 1993-09-09 1995-04-03 Simon Cornelis Van Putten Transverse lamella for a light box
NL9302169A (en) * 1993-12-13 1995-07-03 Simon Cornelis Van Putten Transverse lamella for a light box
US5758954A (en) * 1995-02-14 1998-06-02 U.S. Philips Corporation Luminaire
AU700856B2 (en) * 1995-02-14 1999-01-14 Koninklijke Philips Electronics N.V. Luminaire
WO1996025623A1 (en) * 1995-02-14 1996-08-22 Philips Electronics N.V. Luminaire
FR2738623A1 (en) * 1995-09-13 1997-03-14 Philips Eclairage Fluorescent light fitting with improved louvred cover
EP0959295A2 (en) * 1998-05-19 1999-11-24 Koninklijke Philips Electronics N.V. Luminaire
EP0959295A3 (en) * 1998-05-19 2000-08-23 Koninklijke Philips Electronics N.V. Luminaire
NL1011025C2 (en) * 1999-01-14 2000-07-17 Juliette Simone Catharina Van Fluorescent lighting assembly has transverse laminae which have narrow section and provide greater light output than from conventional assembly
GB2350419B (en) * 1999-04-13 2003-10-01 Siteco Beleuchtungstech Gmbh Improvements in or relating to light fittings
US6582099B2 (en) 1999-12-27 2003-06-24 Ludwig Gmbh Geb Luminaire for elongate lamp
EP1113219A3 (en) * 1999-12-27 2002-02-06 GEBRUEDER LUDWIG GmbH Lamp
DE10040501B4 (en) * 2000-08-18 2006-11-30 Siteco Beleuchtungstechnik Gmbh Round light, grid for round light and slat for round light
GB2369671A (en) * 2000-12-04 2002-06-05 Steven Peter Webb Reflector for a linear light source and louvre controller incorporating the same
GB2369671B (en) * 2000-12-04 2005-04-06 Steven Peter Webb Reflector for a linear light source and louvre controller incorporating the same
WO2002046660A1 (en) * 2000-12-04 2002-06-13 Webb Steven P Reflector for a linear light source and louvre controller incorporating the same
US7434965B2 (en) 2000-12-04 2008-10-14 Steven Peter Webb Reflector for a linear light source and louvre controller incorporating the same
WO2003038336A1 (en) * 2001-11-01 2003-05-08 Koninklijke Philips Electronics N.V. Luminaire and lamellae grid for this
WO2003064918A2 (en) * 2002-01-28 2003-08-07 Koninklijke Philips Electronics N.V. Luminaire with lambellas, for tubular lamp
WO2003064918A3 (en) * 2002-01-28 2003-11-13 Koninkl Philips Electronics Nv Luminaire with lambellas, for tubular lamp
WO2006018285A1 (en) * 2004-08-16 2006-02-23 Zumtobel Lighting Gmbh. Raster arrangement
WO2010121483A1 (en) * 2009-04-24 2010-10-28 富昱电机股份有限公司 Lighting fixture for lamp tube

Also Published As

Publication number Publication date
DE3468930D1 (en) 1988-02-25
EP0138747B1 (en) 1988-01-20
DE8330299U1 (en) 1984-04-12
ATE32135T1 (en) 1988-02-15

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