EP2636944B1 - Lampe avec réflecteur flexible - Google Patents

Lampe avec réflecteur flexible Download PDF

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Publication number
EP2636944B1
EP2636944B1 EP13155102.0A EP13155102A EP2636944B1 EP 2636944 B1 EP2636944 B1 EP 2636944B1 EP 13155102 A EP13155102 A EP 13155102A EP 2636944 B1 EP2636944 B1 EP 2636944B1
Authority
EP
European Patent Office
Prior art keywords
reflector
luminaire
walls
luminaire according
housing
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.)
Not-in-force
Application number
EP13155102.0A
Other languages
German (de)
English (en)
Other versions
EP2636944A3 (fr
EP2636944A2 (fr
Inventor
Jochen Holzbauer
Martin Kroke
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.)
Osram SBT GmbH
Original Assignee
Siteco Beleuchtungstechnik 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 Siteco Beleuchtungstechnik GmbH filed Critical Siteco Beleuchtungstechnik GmbH
Publication of EP2636944A2 publication Critical patent/EP2636944A2/fr
Publication of EP2636944A3 publication Critical patent/EP2636944A3/fr
Application granted granted Critical
Publication of EP2636944B1 publication Critical patent/EP2636944B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • F21S8/026—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
    • 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
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • F21V15/013—Housings, e.g. material or assembling of housing parts the housing being an extrusion
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
    • F21V17/164—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints
    • 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
    • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
    • 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
    • F21V7/10—Construction
    • 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
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
    • 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
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
    • 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
    • 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
    • F21Y2113/00—Combination of light sources

Definitions

  • the subject of the invention relates to a luminaire, e.g. a recessed ceiling or luminaire, with a housing in which a reflector and a light source are arranged.
  • Reflectors are usually made in the prior art of aluminum or other material which is reflective or matt reflective coated. To achieve the desired light control, the reflector surface is brought into a desired shape, usually in a stamping bending process.
  • the reflectors are usually suitable for a type of lamp and can not be replaced after the final assembly of the lamp or only with considerable effort.
  • the prefabricated reflectors have the disadvantage that they require a lot of space due to their three-dimensional shape during storage and transport.
  • US 2005/0259413 A1 discloses a lighting device with a reflector.
  • the reflector is formed by a flexible material, for example by a silver or aluminum coated polyester film or polycarbonate film.
  • US 5,988,836 discloses a luminaire with fluorescent lamps and a flexible reflector.
  • the reflector is held in position in a pair of channels by the residual stress, so that its shape can be adjusted by changing the length.
  • Object of the present invention is to provide a luminaire of the type mentioned above, which have an easier to handle assembly and disassembly reflector.
  • a luminaire in particular luminaire for lighting wedge, interior light or outdoor light, for example ceiling recessed or surface-mounted luminaire, pendant luminaire, floor or wall luminaire, with a housing having at least two opposite walls, at least one light source and a reflector, the Viewed from a light exit side of the lamp behind the light source, wherein the reflector is formed of a flexible reflector flat material, which is flat in the de-energized state, and is clamped between the two walls, so that a curvature of the reflector in a cross section perpendicular to the side walls is formed by an internal stress of the reflector sheet to deflect a portion of the light emitted from the lamp, wherein at least one edge of the reflector sheet, which along a extending said walls, two or more tabs are formed, which are inserted in two or more sections in the wall in question.
  • the use of flexible reflector sheet material makes the reflector easy to assemble and disassemble.
  • the shape of the reflector required for light guidance can be achieved solely by clamping the reflector sheet between two walls of the housing, because the reflector material bends by itself due to its residual stress.
  • the curvature of the reflector surface can be defined by the choice of the distances between the opposite walls and optionally further contact points of the reflector within the housing.
  • This type of luminaire is particularly suitable for flat luminaire designs, e.g. Recessed ceiling or surface mounted luminaires, which have a relatively large reflector with a comparatively small curvature with respect to the light exit surface.
  • the reflector sheet material has at least one edge extending along one of the walls, two or more tabs, which are inserted in two or more sections of the wall in question.
  • the tab may in particular have a rectangular, triangular, trapezoidal or semicircular shape.
  • at least one side is provided with a slope for easy insertion into the cutout.
  • the cutouts in the respective wall preferably have a width which corresponds to the width of the tab directly on the edge of the reflector material. As a result, the tab is positively on the neck.
  • more than two tabs and cutouts are provided to prevent sagging of the reflector in the areas between the tabs along the wall.
  • the cut-outs in the wall have a dimension perpendicular to the adjacent edge of the reflector, which allows the tab to slide back against the residual stress of the reflector material and disengage the tab from the cut-outs.
  • the tab lies with the surface of the reflector flat material facing the luminous means at an edge of the reflector
  • the tab By pushing back the tab against the residual stress, the tab can be solved under elastic deformation of the reflector from the neck.
  • the dimensions of the cutouts perpendicular to the edge are greater than finger widths, ie more than about 20 mm, to allow for the retraction of the tab, a penetration of the cutout, so that the tab can be disengaged at its outer edge with a finger through the cutout ,
  • the reflector can be removed from the housing without tools.
  • the cutout In the assembled state of the reflector, however, the cutout is not visible, because it is behind the reflector as seen from the light exit side.
  • a portion of the reflector rests against a bottom wall of the housing.
  • the bottom wall can connect the two walls, between which the reflector is clamped.
  • the curvature is determined by the position of the reflector edges, which bear against the walls, and the further support on the reflector base.
  • the support on the reflector base is preferably flat in order to give the adjoining region of the reflector the same shape as the housing base.
  • the floor can be level.
  • the at least one luminous means is arranged in the area of the luminaire opposite the support of the reflector.
  • ballasts arranged in space regions between the housing and the reflector resources of the lamp.
  • the lamp comprises lighting means in the form of one or more, preferably parallel, tubular lamps, e.g. Fluorescent lamps, on.
  • the lamps are arranged with their longitudinal extent preferably parallel to the walls between which the reflector is clamped, because along this direction the reflector is rectilinear.
  • Preferred lamps further include LEDs or OLEDs, e.g. arranged at the bottom of the housing.
  • the reflector may end adjacent to the LEDs or OLEDs and there at an intermediate wall, e.g. a step, be attached.
  • a foamed PET material microwave polyethylene terephthalate
  • These materials have an elasticity that allows a uniform curvature in the clamped state of the reflector.
  • the thickness of the reflector material is preferably between 0.5 mm and 1.5 mm.
  • the luminaire according to the invention has a flat housing.
  • These lights are particularly suitable as ceiling lights for mounting on or in the ceiling.
  • a luminaire is shown according to an embodiment of the invention in a cross section, wherein the light exit side 2 of the luminaire facing upward.
  • the luminaire has a box-shaped housing 4, which has a height to width ratio of about 7:60.
  • the longitudinal sides of the luminaire are bounded by side walls 6, which in the preferred embodiment simultaneously serve as walls for holding a reflector 8.
  • the reflector 8 is made of foamed PET, which, when no voltage is applied, is flat.
  • the reflector 8 is clamped between the walls 6 such that it assumes a concave curvature in the cross-sectional plane perpendicular to the walls 6. In this case, a region of the reflector 8 rests on a bottom wall 10 of the housing 4 in the middle region. In this area, the reflector is flat.
  • the longitudinal extension of the fluorescent tubes is perpendicular to the image plane of the FIG. 1 , ie parallel to the walls 6.
  • the attachment of the reflector 8 is provided on the side walls 6.
  • tabs 16 are provided with a rectangular cross-section.
  • the tab 16 are made of the same material as the reflector in one piece with it.
  • Each tab 16 is inserted in a cutout 18 in the housing side wall 6 and abuts against the edge of the cutout 18 facing the light exit surface. Due to the residual stress of the reflector flat material, the tab 16 is pressed toward the edge of the cutout 18 facing the light exit side 2.
  • the cutout 18 points in a direction perpendicular to the edge 14 (ie in the vertical of the Figures 1 and 2 ) has a dimension greater than about 20 mm.
  • FIG. 3 is shown in perspective view a side wall 6 over the entire length of the lamp.
  • the reflector has a corresponding number of tabs 16.
  • the multiple attachment points of the reflector bending of the reflector along the edge 14 is prevented.
  • the reflector extends in a straight line parallel to the fluorescent tubes, whereby a uniform geometry in each cross section perpendicular to the walls 6 is achieved.
  • ballast 20 is arranged in the illustrated embodiment. This area is not visible from the outside so that it can be used for electrical equipment of the luminaire. Although the area is not visible, the area is still easily accessible by removing the reflector.
  • the walls 6 can also be provided as intermediate walls within a luminaire housing.
  • two or more reflectors can be arranged in the manner shown next to each other between each outer wall and an intermediate wall or two partitions.

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)

Claims (9)

  1. Lampe, en particulier lampe intérieure ou lampe extérieure, par ex. lampe de plafond encastrée/en applique, avec un boîtier (4) qui présente au moins deux parois (6) opposées,
    au moins un moyen lumineux (12) et
    un réflecteur (8) qui est disposé derrière le moyen lumineux (12) vu à partir d'un côté de sortie de lumière (2) de la lampe,
    le réflecteur (8) étant formé d'un matériau plat de réflecteur flexible qui est plan dans l'état dénué de tension et qui est tendu entre les deux parois (6) de telle sorte que, du fait d'une tension propre du matériau plat de réflecteur, il se crée une courbure du réflecteur (8) dans une section transversale perpendiculairement aux parois (6) pour dévier une partie de la lumière délivrée par le moyen lumineux (12), caractérisée en ce que, sur au moins un bord (14) du matériau plat de réflecteur qui s'étend le long de l'une desdites parois (6), il est formé deux attaches (16) ou davantage qui sont enfichées dans deux découpes (18) ou davantage dans la paroi (6) concernée,
    les découpes présentant une dimension perpendiculairement au bord qui permet aux attaches de coulisser en retour contre la tension propre du matériau plat de réflecteur et aux attaches de se désengager des découpes.
  2. Lampe selon la revendication 1, les découpes (18) présentant une dimension perpendiculairement au bord (14) d'au moins 20 mm.
  3. Lampe selon l'une des revendications précédentes, un tronçon du réflecteur reposant sur une paroi inférieure (10) du boîtier (4), de préférence à plat.
  4. Lampe selon la revendication 3, un ou plusieurs des moyens lumineux (12) se trouvant dans une zone d'espace du boîtier (4) entre le tronçon en appui du réflecteur (8) et la surface de sortie de lumière (2) de la lampe.
  5. Lampe selon l'une des revendications précédentes, le moyen lumineux (12) au moins au nombre de un comprenant une ou plusieurs lampes de forme tubulaire, de préférence parallèles, en particulier des lampes fluorescentes.
  6. Lampe selon la revendication 5, l'extension longitudinale de la lampe (12) ou des lampes de forme tubulaire s'étendant parallèlement à une ou à deux des parois.
  7. Lampe selon l'une des revendications précédentes, le matériau plat de réflecteur étant formé de matière plastique, en particulier de MCPET (micro cell polyethylen terphthalate).
  8. Lampe selon l'une des revendications précédentes, l'épaisseur du matériau plat de réflecteur étant comprise entre 0,5 et 1,5 mm.
  9. Lampe selon l'une des revendications précédentes, le rapport entre la hauteur de paroi et la largeur de la lampe étant, dans une section transversale perpendiculairement aux parois, compris entre 7:20 et 7:60.
EP13155102.0A 2012-03-05 2013-02-13 Lampe avec réflecteur flexible Not-in-force EP2636944B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012101810A DE102012101810A1 (de) 2012-03-05 2012-03-05 Leuchte mit flexiblem Reflektor

Publications (3)

Publication Number Publication Date
EP2636944A2 EP2636944A2 (fr) 2013-09-11
EP2636944A3 EP2636944A3 (fr) 2015-03-25
EP2636944B1 true EP2636944B1 (fr) 2017-07-05

Family

ID=47740841

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13155102.0A Not-in-force EP2636944B1 (fr) 2012-03-05 2013-02-13 Lampe avec réflecteur flexible

Country Status (2)

Country Link
EP (1) EP2636944B1 (fr)
DE (1) DE102012101810A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105698064B (zh) * 2014-11-28 2019-02-01 通用电气照明解决方案有限公司 嵌入式灯具的改装套件和改装方法
EP3928811A1 (fr) * 2020-06-23 2021-12-29 TecMed AG Dispositif portable d'administration de médicaments

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4065667A (en) * 1975-11-13 1977-12-27 Donald L. Goulet Indirect lighting fixture including improved reflector
US4551791A (en) * 1984-05-31 1985-11-05 Stabeg Apparatebaugesellschaft M.B.H. Recessed lamp
US4599684A (en) * 1985-03-11 1986-07-08 Lee Richard H Light reflector system
US4799134A (en) * 1986-07-15 1989-01-17 Spencer McGrath Optical reflector system for fluorescent lighting fixtures
US5142459A (en) * 1991-07-29 1992-08-25 Swarens Ralph W Hidden source fluorescent light wash fixture
US5584566A (en) * 1995-07-17 1996-12-17 R. C. Dudek & Company, Inc. Backlighting light fixtures for trade show display structures
US5988836A (en) * 1996-07-31 1999-11-23 Swarens; Ralph W. Recessed indirect fluorescent light fixture with flexible reflector
US5845988A (en) * 1997-04-28 1998-12-08 Mandall; Michael C. Armored lighting fixture
US20050259415A1 (en) * 2004-05-19 2005-11-24 Hae-Ryong Jung Lighted sign fixture having reflective surface

Also Published As

Publication number Publication date
EP2636944A3 (fr) 2015-03-25
EP2636944A2 (fr) 2013-09-11
DE102012101810A1 (de) 2013-09-05

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