EP0309832B1 - Appareil d'éclairage - Google Patents

Appareil d'éclairage Download PDF

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Publication number
EP0309832B1
EP0309832B1 EP88115223A EP88115223A EP0309832B1 EP 0309832 B1 EP0309832 B1 EP 0309832B1 EP 88115223 A EP88115223 A EP 88115223A EP 88115223 A EP88115223 A EP 88115223A EP 0309832 B1 EP0309832 B1 EP 0309832B1
Authority
EP
European Patent Office
Prior art keywords
sheet metal
shaped
lamp
louvre
vane
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
EP88115223A
Other languages
German (de)
English (en)
Other versions
EP0309832A1 (fr
Inventor
Karl-Fritz Dipl.-Ing. Roll
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to AT88115223T priority Critical patent/ATE72892T1/de
Publication of EP0309832A1 publication Critical patent/EP0309832A1/fr
Application granted granted Critical
Publication of EP0309832B1 publication Critical patent/EP0309832B1/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
    • F21V11/02—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 mirror luminaire for a rod-shaped lamp, in particular fluorescent tube, with longitudinal mirrors running parallel to the lamp on both sides and arranged transversely to it below the lamp, with the base of its double parabolic cross section aligned with the lamp, with the louvres on the louvres have a hat-shaped cover with reflecting surfaces along the length of its cross section along its length, and the cutting line of the cover with a plane running perpendicular to the longitudinal axis of the lamp has a concave curvature symmetrical to the longitudinal axis of the lamp.
  • a mirror lamp of this type is known for example from the literature DE 31 12 210 C2.
  • the hat-shaped cover here consists of a mirrored molded part, which is placed on the base of the grid lamella and increases in height from the middle of the grid lamella, starting from a central area. Undesired reflections on this cover can certainly be avoided with such a hat-shaped cover, but the effort required for this is considerable.
  • the invention has for its object to provide a mirror luminaire of the type described in the introduction, a further solution for a louvre with a reflective hat-shaped cover, which, among other things, the luminance distribution to be set at office workstation lights, in particular the light distribution caused by the louvre slats shielding required here at a radiation angle ⁇ ⁇ 50 ° is not destroyed.
  • the invention is based on the finding that the curved contour of the hat-shaped cover, which rises towards the edge in order to avoid undesirable reflections in the extension of a grid lamella, does not have to be designed continuously but can also be approximated in that, starting from a flat center piece, this flat center piece on both sides through a pyramid-shaped, each up to Slat edge-extending hat is complemented with flat side surfaces to the desired hat-shaped cover.
  • This design achieves in an extremely advantageous manner that the louvre lamella, including this hat-shaped cover designed in this way, can be formed from a sheet metal part in a simple and cost-saving manner, that is to say that a special base-side attachment in the form of a mirrored molded part can be dispensed with.
  • FIG. 1 shows two longitudinal mirrors LS with a parabolic contour, between which the rod-shaped lamp L, for example a fluorescent tube, is arranged in a symmetrical arrangement in the upper half.
  • a flat roof mirror DS is provided above the lamp L, which e.g. can also be the inside of the lamp housing.
  • Transverse louvres RL are arranged transversely to the longitudinal mirrors LS and anchored at their ends therein, which have a double parabolic wedge-like cross-section and are aligned on the foot side against the lamp.
  • the grid louvres RL are provided on the foot side with a flat reflective cover A, which can be realized, for example, from the edge of the lamella walls LW bent into the horizontal on the foot side.
  • the range ⁇ > 50 ° thus represents the shielding area of the luminaire, in which, if the BAP condition is to be met, the luminance is ⁇ 200 cd / m2.
  • a critical light beam O is entered, which clarifies that the flat cover A of the grid slats RL on the foot side outside the central region can lead to the image of the image of the grid slats RL reflected on the foot flat cover Lamp L can emerge from the light opening of the lamp SL via multiple reflection in conjunction with the longitudinal mirrors LS at an angle ⁇ > 50 °. This destroys the desired shielding in the range ⁇ > 50 °.
  • the image corresponding to FIG. 1 of the lamp SL according to FIG. 2 now uses a hat-shaped cover A in the form of a flat middle part MS instead of the flat cover of the grid louvres RL on the base, to which a four-sided, towards the respective longitudinal mirror LS is more open on both sides pyramid-shaped hat H connects.
  • the section line shown in FIG. 2 of the contour of this hat-shaped cover with a plane perpendicular to the lamp axis represents an approximation to a concave curvature in the form of a parabola, which here, due to the angle of attack ⁇ of the flat middle piece MS continuing the flat middle piece MS on opposite sides, of the hats H is determined.
  • the oblique sides H2 and H3 of the pyramid-shaped hats H also favor the emission of the light reflected from them via a few reflections from the lamp, without the lamp being shielded in the critical planes (C0-C180 and C90-C270) is significantly impaired.
  • the special design of the base-side covering of the louvres RL from a flat middle piece MS and pyramid-shaped hats H, as shown in FIG. 2, allows the formation of the louvres RL including the hat-shaped cover from each in an extremely advantageous manner a single sheet metal part.
  • FIG. 3 A first embodiment for such a sheet metal part BT1 is shown in FIG. 3. It has a shape symmetrical to the edge line KL forming the tip of the double parabolic cross section of the raster lamella RL and has three sheet metal sections at the free ends of the two lamella walls LW, one of which is from the middle sheet metal section, the flat middle piece MS and the hats H with the top side H1 and the oblique sides H2 and H3 are each formed from two sheet metal sections lying opposite one another.
  • This gap SP enables the lamella walls LW in the resilient anchoring of the ends of the louvre slats RL in appropriately designed slots in the longitudinal mirrors LS according to FIG. 2 at their foot ends so that they can be moved towards each other elastically so that their edge-side anchoring in the slots mentioned the longitudinal mirror LS can be carried out easily and without the risk of deformation.
  • the narrow gap SP causes a slight increase in the light losses which are inherently undesirable due to the louvres RL.
  • the gap can be avoided if the two sheet metal sections forming the middle piece MS on the one hand and the sheet metal sections forming the upper side H1 on the other hand overlap slightly at the joint. As shown in Fig. 3, this can e.g. are brought about in that the three sheet metal sections adjoining a lamella wall LW are provided on one side with an extension VL indicated by dash-dotted lines. Of course, this extension VL can also be distributed over the three sheet metal sections on both opposite sides of the sheet metal part BT1, so that its contour is again symmetrical with the edge line KL.
  • the grid lamella RL formed from the sheet metal part BT1 with the desired extension VL according to FIG. 3 is shown in perspective in FIG. 5.
  • the overlapping joint running parallel to the edge line KL is indicated by ÜS.
  • the gap can also be avoided if the contour of the sheet metal part to be formed to form the grid lamella RL with a hat-shaped cover, as shown by the sheet metal part BT2 according to FIG. 6, is symmetrical to the center line ML, which is perpendicular to that Point of the double parabolic cross-section forming edge line KL is aligned.
  • the sheet metal sections provided for the formation of the two pyramid-shaped hats H are assigned to one half HE2, while the sheet metal section provided for the center piece MS of the cover is assigned to the other half HE1 is.
  • raster lamella RL shows in perspective, here is the joint between the free end of the flat middle piece MS and the rear lamella wall LW on the one hand and the oblique sides H2 of the pyramid-shaped hats H and the front slat wall LW on the other hand moved into the transition with the slat walls LW.
  • This shock does not cause any loss of light.
  • the two lamella walls LW can spring against one another practically over the entire foot width of the double parabolic cross section.
  • Mirror lights of the type described can be used as ceiling and recessed lights as well as pendant lights in offices, where, for example with regard to VDU workstations, special requirements must be placed on the light distribution.

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)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Optical Elements Other Than Lenses (AREA)

Claims (6)

  1. Appareil d'éclairage à réflecteurs pour une lampe tubulaire (L), notamment un tube fluorescent, comportant des réflecteurs longitudinaux (LS), qui s'étendent parallèlement à la lampe, des deux côtés de cette dernière, et des lamelles de paralume (RL) qui sont disposées au-dessous de la lampe (L) transversalement par rapport aux réflecteurs et dont le pied de leur section transversale de forme doublement parabolique est orienté vers la lampe, et dans laquelle les lamelles de paralume comportent, du côté du pied de leur section transversale et sur toute leur longueur, un capot (A) en forme de chapeau possédant des surfaces réfléchissantes, une ligne d'intersection entre le capot et un plan perpendiculaire à l'axe longitudinal de la lampe possédant une courbure concave symétrique par rapport à l'axe longitudinal de la lampe,
    caractérisé par le fait que
    pour la fabrication simple des lamelles de paralume (LR) ainsi que de leur capot en forme de chapeau à partir respectivement d'une pièce en tôle déformable (BT1, BT2), la courbure concave de la ligne d'intersection du capot en forme de chapeau est obtenue de façon approchée au moyen d'un élément médian plat (MS), qui se prolonge, des deux côtés, par un chapeau en forme de pyramide quadrangulaire (H), ouvert en direction du réflecteur longitudinal respectif proche (LS) et que l'angle d'inclinaison (ε) des faces supérieures obliques (H1), qui prolongent l'élément médian plat sur des côtés opposés, des chapeaux en forme de pyramide est dimensionné de manière que la forme de la ligne d'intersection des surfaces, qui en résulte, se rapproche d'une parabole.
  2. Appareil d'éclairage à réflecteurs suivant la revendication 1, caractérisé par le fait que
    la pièce en tôle (BT1), à partir de laquelle les lamelles de paralume (RL) peuvent être formées, avec un capot en forme de chapeau, possède deux éléments de tôle identiques, qui représentent les parois (LW) des lamelles et posèdent une ligne d'arête commune (KL), à laquelle se raccordent, sur les côtés opposés à Leur ligne d'arête commune, d'autres éléments en tôle, qui servent en commun à former l'élément médian (MS) et les chapeaux (H) qui jouxtent des deux côtés la partie médiane et qui sont constitués respectivement par la face supérieure (H1) et les deux faces obliques latérales (H2, H3).
  3. Appareil d'éclairage à réflecteurs suivant les revendications 1 et 2, caractérisé par le fait que
    la zone d'aboutement, qui est présente lors du formage de la pièce en tôle (BT1), dans le capot en forme de chapeau, est agencée, dans la direction dans laquelle s'étendent les lamelles de paralume (RL), sous la forme d'une fente étroite (SP), dont la largeur est dimensionnée pour permettre un débattement élastique suffisant de pression des parois (LW) des lamelles, du côté du pied, et servant à réaliser l'ancrage élastique des lamelles de paralume dans les réflecteurs longitudinaux (LS).
  4. Appareil d'éclairage à réflecteurs suivant les revendications 1 et 2, caractérisé par le fait que
    la zone d'aboutement, présente lors du formage de la pièce en tôle (BT1) dans le capot en forme de chapeau, est agencée, dans la direction dans laquelle s'étendent les lamelles de paralume (RL), sous la forme d'une zone d'aboutement en chevauchement (ÜS).
  5. Appareil d'éclairage à réflecteurs suivant l'une des revendications précédentes, caractérisé par le fait que
    le contour de la pièce en tôle (BT1), à partir de laquelle les lamelles de paralume (RL) peuvent être formées avec le capot en forme de chapeau, est symétrique par rapport à la ligne d'arête (KL) qui constitue la pointe de la section transversale en forme de parabole double des lamelles de paralume.
  6. Appareil d'éclairage à réflecteurs suivant les revendications 1 et 2, caractérisé par le fait que
    dans le cas de la pièce en tôle (BT2), parmi les autres éléments en tôle, qui se raccordent aux parois (LW) des lamelles sur les côtés opposés à leur ligne d'arête commune (KL), l'élément en tôle représentant l'élément médian (MS) se raccorde à une paroi de lamelle et que les pièces en tôle, qui forment les chapeaux (H), à savoir respectivement une face supérieure (H1) et deux faces obliques (H2,H3), se raccordent à l'autre paroi de lamelle.
EP88115223A 1987-09-28 1988-09-16 Appareil d'éclairage Expired - Lifetime EP0309832B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88115223T ATE72892T1 (de) 1987-09-28 1988-09-16 Spiegelleuchte.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3732610 1987-09-28
DE3732610 1987-09-28

Publications (2)

Publication Number Publication Date
EP0309832A1 EP0309832A1 (fr) 1989-04-05
EP0309832B1 true EP0309832B1 (fr) 1992-02-26

Family

ID=6337031

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88115223A Expired - Lifetime EP0309832B1 (fr) 1987-09-28 1988-09-16 Appareil d'éclairage

Country Status (6)

Country Link
US (1) US4888668A (fr)
EP (1) EP0309832B1 (fr)
AT (1) ATE72892T1 (fr)
DE (1) DE3868577D1 (fr)
NO (1) NO175606C (fr)
ZA (1) ZA887193B (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3932935A1 (de) * 1989-10-03 1991-04-11 Zumtobel Ag Leuchtenraster
NL9402049A (nl) * 1994-12-06 1996-07-01 Etap Nv Verlichtingsinrichting.
JPH10502765A (ja) * 1995-02-14 1998-03-10 フィリップス エレクトロニクス ネムローゼ フェンノートシャップ 照明器具
US5528478A (en) * 1995-10-04 1996-06-18 Cooper Industries, Inc. Lighting fixture having a parabolic louver
USD377231S (en) * 1996-03-19 1997-01-07 Cooper Industries, Inc. Luminaire
EP0862713B1 (fr) * 1996-10-08 2003-04-02 Koninklijke Philips Electronics N.V. Appareil d'eclairage
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
NL1007835C2 (nl) * 1997-12-18 1999-06-21 Veco Products B V Verlichtingsarmatuur.
DE19916601C2 (de) * 1999-04-13 2002-08-01 Siteco Beleuchtungstech Gmbh Lamelle, Leuchtenraster zur Entblendung und Leuchte
EP1259756A2 (fr) * 2000-02-29 2002-11-27 LT-LICHT-TECHNIK GmbH Ensemble reflecteur pour une lampe
ATE468511T1 (de) * 2001-02-23 2010-06-15 Koninkl Philips Electronics Nv Leuchte
US20050168986A1 (en) * 2004-01-30 2005-08-04 Scott Wegner Reflector assemblies for luminaires
US7209577B2 (en) 2005-07-14 2007-04-24 Logitech Europe S.A. Facial feature-localized and global real-time video morphing
US20080178903A1 (en) * 2007-01-25 2008-07-31 Timothy Thorpe Rotating Sifter
US8006707B2 (en) 2008-01-29 2011-08-30 Hct Asia Ltd. Rotating dial sifter
US10045600B2 (en) 2014-09-18 2018-08-14 HCT Group Holdings Limited Container with quick release base and lid assembly
USD786088S1 (en) 2015-07-10 2017-05-09 HCT Group Holdings Limited Angled pump with depression
US9993059B2 (en) 2015-07-10 2018-06-12 HCT Group Holdings Limited Roller applicator
USD784162S1 (en) 2015-10-08 2017-04-18 HCT Group Holdings Limited Tottle
USD818641S1 (en) 2016-03-16 2018-05-22 HCT Group Holdings Limited Cosmetics applicator with cap

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Publication number Priority date Publication date Assignee Title
GB814354A (en) * 1956-09-19 1959-06-03 Leitz Ernst Gmbh Improvements in or relating to reflector arrangements for elongated tubular light sources
US3591798A (en) * 1968-11-04 1971-07-06 Lightolier Inc Lighting fixture
US4407011A (en) * 1980-12-08 1983-09-27 Donn Incorporated Integrated lighting systems for suspended ceilings or the like
DE3112210C2 (de) * 1981-03-27 1985-01-10 Siemens AG, 1000 Berlin und 8000 München Spiegelleuchte
DE3215026A1 (de) * 1982-04-22 1984-03-15 Thorn Emi Beleuchtungsgesellschaft mbH, 5760 Arnsberg Leuchte
US4429354A (en) * 1982-09-29 1984-01-31 Emerson Electric Co. Lighting fixture louver
DE8307931U1 (de) * 1983-03-18 1983-07-21 Trilux-Lenze Gmbh + Co Kg, 5760 Arnsberg Leuchtenraster fuer eine langgestreckte lampe
AT381577B (de) * 1983-04-08 1986-11-10 Bartenbach Christian Blendungsfreie leuchte fuer eine stabfoermige lichtquelle
US4494175A (en) * 1984-01-09 1985-01-15 Gte Products Corporation Recessed lighting fixture with improved louver mounting
DE8702921U1 (de) * 1987-02-25 1987-07-30 Metaprint Metallverarbeitung GmbH, 8000 München Leuchte

Also Published As

Publication number Publication date
NO175606B (no) 1994-07-25
EP0309832A1 (fr) 1989-04-05
NO884276D0 (no) 1988-09-27
US4888668A (en) 1989-12-19
ATE72892T1 (de) 1992-03-15
NO884276L (no) 1989-03-29
NO175606C (no) 1994-11-02
DE3868577D1 (de) 1992-04-02
ZA887193B (en) 1989-06-28

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