EP2994695A1 - Système réflecteur comprenant plusieurs réflecteurs et sources lumineuses à semi-conducteur - Google Patents

Système réflecteur comprenant plusieurs réflecteurs et sources lumineuses à semi-conducteur

Info

Publication number
EP2994695A1
EP2994695A1 EP14722610.4A EP14722610A EP2994695A1 EP 2994695 A1 EP2994695 A1 EP 2994695A1 EP 14722610 A EP14722610 A EP 14722610A EP 2994695 A1 EP2994695 A1 EP 2994695A1
Authority
EP
European Patent Office
Prior art keywords
reflector
metal part
sheet metal
semiconductor light
wing
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
EP14722610.4A
Other languages
German (de)
English (en)
Other versions
EP2994695B1 (fr
Inventor
Tobias Schmidt
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 GmbH
Original Assignee
Osram 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 Osram GmbH filed Critical Osram GmbH
Publication of EP2994695A1 publication Critical patent/EP2994695A1/fr
Application granted granted Critical
Publication of EP2994695B1 publication Critical patent/EP2994695B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F21V7/00—Reflectors for light sources
    • F21V7/0083—Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/001—Arrangement of electric circuit elements in or on lighting devices the elements being electrical wires or cables
    • 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
    • F21V7/04—Optical design
    • F21V7/048—Optical design with facets structure
    • 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
    • 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • Reflector arrangement with multiple reflectors
  • the invention relates to a reflector arrangement for a
  • Lighting device having a plurality of reflectors for each at least one semiconductor light source.
  • the invention further relates to a lighting device with at least one such reflector arrangement.
  • the invention also relates to a method for producing such a reflector arrangement.
  • the invention is particularly applicable to lights for general lighting, in particular for surface lighting.
  • Linear arrays of multiple reflectors have heretofore been provided either by fabricating the reflectors one at a time and then mounting them side by side on a common carrier, or by inserting crossbars into a linear reflector trough.
  • a linear reflector trough typically has a rectilinear, band-shaped bottom and laterally obliquely upstanding, reflective side walls.
  • the cross blades may e.g. inserted in slots in the side walls or on the
  • Reflectors in particular linearly arranged reflectors to provide.
  • the object is achieved by a reflector arrangement for a lighting device.
  • the reflector arrangement has a plurality of reflectors for at least one semiconductor light source.
  • the reflectors are reflector portions of a common continuous sheet metal part.
  • the reflector portions have at least partially bent out of the sheet metal part wing areas.
  • This reflector assembly has the advantage that it is made of a single piece, namely the sheet metal part, so that there are no connection techniques for joining
  • the reflector assembly is also particularly stable ausgestaltbar due to their integral nature.
  • Semiconductor light source or a (common) reflector for a plurality of semiconductor light sources are semiconductor light sources or a (common) reflector for a plurality of semiconductor light sources.
  • Semiconductor light source at least one light emitting diode.
  • a color may be monochrome (e.g., red, green, blue, etc.) or multichrome (e.g., white). This can also be done by the at least one
  • LED emitted light is an infrared light (IR LED) or an ultraviolet light (UV LED).
  • Light emitting diodes can produce a mixed light; e.g. a white mixed light.
  • the at least one light-emitting diode may contain at least one wavelength-converting phosphor
  • the phosphor may alternatively or additionally be arranged away from the light-emitting diode
  • the at least one light-emitting diode can be in the form of at least one individually housed light-emitting diode or in the form of at least one LED chip.
  • LED chips Several LED chips ⁇
  • the at least one light emitting diode can be mounted on a common substrate ("submount").
  • the at least one light emitting diode may be equipped with at least one own and / or common optics for beam guidance, e.g. at least one Fresnel lens,
  • organic LEDs can generally also be used.
  • the at least one semiconductor light source may be e.g. have at least one diode laser.
  • the wing portions are partially separated from the rest of the sheet metal part, e.g. through one or more cuts.
  • Wing sections are still connected to the rest of the sheet metal part by at least one non-intersecting transition (also referred to as a "material bridge")
  • Wing areas allow a particularly diverse
  • the cuts can e.g. be introduced by a laser separation method.
  • the reflector portions or the reflectors may be generally reflective or diffuse reflective. At least one semiconductor light source may then illuminate light into the reflector through a neck opening or be arranged on the reflector at the half opening. Light typically enters one of the neck openings
  • the sheet metal part may be metallic, eg made of aluminum or steel, but also made of thin plastic ("plastic sheet") .
  • the sheet metal part is however not limited to this and may eg also be a thin metal-laminated plastic or the sheet metal part can generally be considered a thin one It is an embodiment that the sheet metal part is bent to at least one linear reflector trough, wherein the
  • Reflector trough a band-shaped bottom and laterally thereof each having at least one upturned side wall.
  • the linear reflector trough likes at each
  • Reflectors are generated by simply bending in the wing areas in the reflector trough.
  • a reflector can be formed by at least two bent wing regions of opposite reflector subregions and by sections of the side walls lying between the wing regions.
  • Such a reflector may in particular be a circulating reflector or shell reflector.
  • Reflector sections of a common reflector symmetrical to a median plane which is perpendicular to the ground are formed.
  • Reflector four wing areas The wing portions of a reflector portion are separated by an intermediate (middle) reflector portion of the side wall (which remains on the side wall).
  • the wing areas are in particular with respect to a longitudinal extent of the
  • the wing areas can be bent into their parallel position in the reflector trough or even so that they are inclined
  • the wing regions are preferably provided with a width which corresponds at least to half the width of the reflector trough at the corresponding height.
  • the wing areas can be similar to gates in the reflector trough
  • Wing area and the opposite side wall no or no significant gap remains, through which light could escape laterally.
  • the wing regions are preferably provided with a width which corresponds at least to a width of the reflector trough (at the corresponding height).
  • Placement areas for arranging the semiconductor light sources are located on the ground. In particular, thereby the
  • the semiconductor light sources may be arranged directly or indirectly on a placement region.
  • a packaged semiconductor light source may be connected with its bottom directly to the bottom of the reflector trough, e.g. attached to it.
  • Electrical contacting of a semiconductor light source may, for example, occur via top-side contacts, e.g. can be connected via bonding wires with associated electrical connection lines, in particular conductor tracks.
  • top-side contacts e.g. can be connected via bonding wires with associated electrical connection lines, in particular conductor tracks.
  • Semiconductor light source may be a packaged semiconductor light source, which rests with at least one lower-side electrical contact directly on an electrical connection line, in particular conductor track, and with this example.
  • the housed semiconductor light sources may in particular be surface mountable components (SMT components).
  • SMT components surface mountable components
  • the semiconductor light sources may be e.g. also a front mounted on a substrate
  • Semiconductor chip e.g. LED chip
  • the substrate rests on the back of the sheet metal part.
  • At least one semiconductor light source is arranged on that side of the floor, in particular is fastened, which faces away from the reflector. This page is in
  • the at least one semiconductor light source in particular by a recess in the bottom in the direction of the front through.
  • the at least one semiconductor light source can be arranged in one
  • Connecting lines to the mounting areas run on the ground. This allows a simple electrical connection of the semiconductor light sources.
  • Semiconductor light sources can by means of the electric
  • connection lines to be connected in series and / or parallel to each other.
  • the electrical connection lines may be, for example, cables, wires or printed conductors.
  • non-isolated connection lines e.g. Conductor tracks, these can rest in particular on an electrically insulating layer on the ground.
  • Sheet metal part limited. You can e.g. Run on areas of the sheet metal part, which no bottom of a
  • the reflector arrangement has a plurality of reflector troughs.
  • a particularly high number of reflectors can be provided by a one-piece reflector arrangement, in particular also
  • Reflector troughs are surrounded by a common frame, which holds the reflector troughs. This allows a simple way several reflector troughs at the same
  • Reflector troughs are multifarious and largely independent of each other are malleable.
  • the sheet metal part may generally have at least one recess.
  • the recess can be introduced, for example, by local cutting, punching, etc. in the sheet metal part.
  • the at least one recess may in particular serve to conduct a semiconductor light source and e.g. be introduced in the bottom of a reflector trough.
  • the object is also achieved by a lighting device having at least one reflector arrangement as described above, wherein at least one semiconductor light source is arranged on the sheet metal part.
  • the lighting device may be designed analogously to the reflector arrangement and have the same advantages.
  • the lighting device has at least one reflector arrangement with at least one reflector trough, wherein the at least one
  • Semiconductor light source is disposed at the bottom of the reflector trough. It is also an embodiment that at least one electrical connection line runs at the bottom of the reflector trough.
  • Substrate are arranged. As a result, their arrangement on the sheet metal part can be done in a particularly simple and time-saving manner. Thus, by arranging, in particular attaching, the
  • the common substrate is a band-shaped - flexible or rigid - circuit board, which together with the semiconductor light sources and the
  • Connecting lines forms a so-called light strip, in particular an LED strip.
  • Such light bands are e.g. in the form of LED ribbons from Osram, e.g. of the type LINEARLight,
  • the retaining tabs are in particular also dealtbiegbare on the sheet metal part
  • the type of lighting device is not limited and may be, for example, a lamp or a lamp. Particularly preferred is an embodiment as a light for
  • the lamp may in particular be a ceiling light or a wall lamp.
  • the procedure may at least follow the steps below
  • the method may be formed analogously to the reflector arrangement and / or the lighting device and has the same advantages.
  • the method may include bending the sheet metal part, including bending out the wing sections, to form at least one linear one
  • reflector troughs in particular with at least two reflectors.
  • the forming of the reflectors may be like bending out the wing area into the associated one
  • the bending can in particular a bending or angling of two portions of the sheet metal part to a common
  • Bending lines includes. The area between the two
  • Bend lines can serve as a floor, the two areas on the side of the floor can serve as sidewalls.
  • Wing areas can at least partially from the
  • wing regions are bent out.
  • the wing regions can be completely bent out of the side walls, alternatively or additionally bent out of the side walls and out of the bottom.
  • Fig.l shows a plan view of a sheet metal part for producing a reflector assembly according to a first
  • Fig.3-6 shows the reflector assembly of Figure 2 in one
  • FIG. 8 shows a plan view of a sheet metal part for producing a reflector assembly according to a second embodiment
  • FIG. 9 shows a plan view of a sheet metal part for producing a reflector arrangement according to a third
  • Fig.l shows a top view of a section of a
  • the sheet metal part 11 for producing a reflector assembly according to a first embodiment.
  • the sheet metal part 11 is made of metal, e.g. Steel or aluminum, at least
  • the sheet metal part 11 is formed here linearly band-shaped with a longitudinal axis L.
  • the sheet metal part 11 is partially provided with slots 23 and partially bent to produce the reflector assembly 24 shown in Figure 2.
  • parallel to and symmetrical to the longitudinal axis L four longitudinally extending bending lines Bl, B2, B3 and B4 are present, on which the sheet metal part 11 is bent.
  • Bend lines B2 and B3 delimited.
  • the side walls 14 and 15 may be bent at the outer bending lines Bl and B4 and there form side edges 16 and 17.
  • the side walls 14 and 15 each have a plurality of reflector subregions 18a, 18b, 19a, 19b, wherein each two subregions 18a, 18b and 19a, 19b with respect to the longitudinal axis L are opposite and symmetrical.
  • Adjacent reflector portions 18a, 19a and 18b, 19b of the same side wall 14 and 15 are arranged equidistant from each other.
  • Each of the reflector subregions 18a, 18b, 19a, 19b has a central region 20 which extends continuously between the two associated bending lines Bl, B2 or B3, B4
  • Bend regions 21, 22 and which are delimited from the central region 20 by bending lines B5, B6 The bending lines B5, B6 extend in a straight line over the entire height of the central region 20 between the
  • Central area 20 of the inner bending line B2 or B3 to the outer bending line Bl or B4 expands or increases in its width.
  • the central region 20 thus has the shape of an isosceles trapezium.
  • the wing portions 21, 22 are separated by respective through slots 23 from the remaining sheet metal part 11.
  • the wing areas 21 and 22 thus depend only on the
  • the wing portions 21, 22 may alternatively be cut into the ground 13, as indicated by the dotted lines
  • the side walls 14 and 15 and the bottom 13 form the linear reflector trough 13 to 15, to which the side edges 16 and 17 connect.
  • the side edges 16 and 17 may constitute part of the reflector trough 13-15.
  • the reflector regions 18a and 18b By the reflector regions 18a and 18b, 19a and 19b respective reflectors 18 and 19 are formed.
  • the reflectors 18 and 19 are each as a truncated pyramid
  • the four reflective sidewalls are composed of the central regions 20 and opposite wing regions 21 and 22, which are bent vertically into the reflector trough 13 to 15
  • adjacent wing areas 21 and 22 prevents or at least kept so small that it no
  • the section of the bottom 13 delimited by the wing regions 21 and 22 may also be reflective and serves as the assembly region 25 for at least one
  • the wing portions 21 and 22 are taken here on its underside and from the bottom 13 so that they are in
  • bent out state may extend to the bottom 13.
  • the wing portions 21 and 22 have on their bottom 13 facing the bottom one (in Fig.l not
  • recess 26 wherein the recesses 26 adjoin one another and together form a central passage.
  • FIG. 3 shows the finished reflector arrangement 24 from FIG. 1 in a cross-sectional view with differently shaped side edges 16 and 17. While in the variant of the reflector arrangement 24 shown in FIG. 2 the side edges 16 and 17 are vertically upright, they are along in FIG the outer bending lines Bl and B4 bent vertically downwards. In contrast, in Figure 4, the side edges 16 and 17 are folded over horizontally along the outer bending lines Bl and B4. The side edges 16 and 17 are formed curved in Fig.5 in cross section from the bending line Bl or B4 downwards, curved in Figure 6 to the side.
  • the type of light-emitting diodes 27 is basically
  • Placement area 25 are fixed, for example, are glued. Between the equipping regions 25 and the light-emitting diodes 27, electrical connection lines run in the form of two parallel conductor tracks 29.
  • the conductor tracks 29 are applied to the floor 13 via an electrically insulating layer 30 and supply the light-emitting diodes 27 with electrical energy.
  • the conductor tracks 29 extend in the finished bent state of the sheet metal part 11 through the recess 26 of the wing portions 21 and 22, so that the wing portions 21 and 22 cross the tracks 29 spaced.
  • the so-equipped, finished bent sheet metal part 11 can serve as a lighting device 31.
  • FIG. 8 shows in plan view a simplified sketch of a sheet-metal part 41 for producing a reflector arrangement 42 according to a second exemplary embodiment.
  • the sheet metal part 41 differs from the sheet metal part 11 in that it now has three rows R1, R2, R3 of four linearly arranged reflectors 18 and 18a, 18b and not just one row.
  • the sheet metal part 41 can thus be bent to a reflector assembly 42, which three
  • Reflector troughs Tl to T3 are connected by the same side edges 16.
  • the reflector portions 18a, 18b, etc. may also be completely bent out of the sheet metal part 41 and, in particular, may be additionally fixed in the following, e.g. through a lid.
  • FIG. 9 shows in plan view a simplified sketch of a sheet-metal part 51 for producing a reflector arrangement 52 according to a third exemplary embodiment.
  • the sheet metal part 51 is formed similarly to the sheet metal part 41, but now the common reflector troughs T4, T5 or T6 forming rows of four reflectors 18a, 18b are cut out of the sheet metal part 51 to a transition 53 on the end sides of the bottom 13 rectangular.
  • the associated rectangular sections 54 thus extend between the two transitions 53.
  • This reflector arrangement 52 has the advantage that the
  • the reflector troughs Tl to T3 still hang together mechanically via a common, circumferential frame 55 which holds the reflector troughs T4 to T6 at their transitions 53.
  • the reflector troughs T4 to T6 can also be electrically connected to each other, for example, the fact that common tracks traverse the transitions 53 and run on the common frame 55.
  • a number may include exactly the specified number as well as a usual tolerance range, as long as this is not explicitly excluded.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

L'invention concerne un système réflecteur (24), destiné à un dispositif d'éclairage (31), qui comporte plusieurs réflecteurs (18, 19) associés chacun à au moins une source lumineuse à semi-conducteur (27). Les réflecteurs (18, 19) sont des zones partielles réfléchissantes (18a, 18b, 19a, 19b) d'une pièce en tôle (11) commune d'un seul tenant et ces zones partielles réfléchissantes (18a, 18b, 19a, 19b) possèdent des zones d'ailes (21, 22) repliées au moins en partie depuis la pièce en tôle (11 ; 41 ; 51). Un dispositif d'éclairage (31) comporte au moins un système réflecteur (24) et au moins une source lumineuse à semi-conducteur (27) est disposée sur la pièce en tôle (11). Un procédé de fabrication d'un système réflecteur (24) comprend au moins les étapes suivantes : réalisation de fentes (23) dans une pièce en tôle (11) afin de former des zones d'ailes (20, 21) qui peuvent être repliées à partir de la pièce en tôle (11) ; et pliage de la pièce en tôle (11) avec repliage des zones d'ailes (20, 21) afin de former au moins un réflecteur (18, 19). L'invention est applicable en particulier à des luminaires d'éclairage général, en particulier pour l'éclairage de surfaces.
EP14722610.4A 2013-04-25 2014-04-24 Système réflecteur comprenant plusieurs réflecteurs et sources lumineuses à semi-conducteur Active EP2994695B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013207609.6A DE102013207609A1 (de) 2013-04-25 2013-04-25 Reflektoranordnung mit mehreren Reflektoren und Halbleiterlichtquellen
PCT/EP2014/058297 WO2014173989A1 (fr) 2013-04-25 2014-04-24 Système réflecteur comprenant plusieurs réflecteurs et sources lumineuses à semi-conducteur

Publications (2)

Publication Number Publication Date
EP2994695A1 true EP2994695A1 (fr) 2016-03-16
EP2994695B1 EP2994695B1 (fr) 2017-06-14

Family

ID=50685888

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14722610.4A Active EP2994695B1 (fr) 2013-04-25 2014-04-24 Système réflecteur comprenant plusieurs réflecteurs et sources lumineuses à semi-conducteur

Country Status (4)

Country Link
US (1) US20160069533A1 (fr)
EP (1) EP2994695B1 (fr)
DE (1) DE102013207609A1 (fr)
WO (1) WO2014173989A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9541255B2 (en) * 2014-05-28 2017-01-10 Lsi Industries, Inc. Luminaires and reflector modules
DE102014117316A1 (de) * 2014-11-26 2016-06-02 Hella Kgaa Hueck & Co. Beleuchtungsvorrichtung für Fahrzeuge
US11913638B2 (en) * 2022-06-17 2024-02-27 CoreLed Systems, LLC All metal surface mount reflector

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4412276A (en) * 1981-12-07 1983-10-25 Polaroid Corporation Strobe reflector assembly
US5220729A (en) * 1992-08-03 1993-06-22 Gallant Raymond J Hand-held wire saw
US5568680A (en) * 1995-01-26 1996-10-29 Regent Lighting Corporation Method for making a reflector for a luminaire
EP1113219B1 (fr) * 1999-12-27 2008-01-02 Ludwig Leuchten KG Lampe
GB0029532D0 (en) * 2000-12-04 2001-01-17 Webb Steven P Reflector for a linear light source and louvre controller incorporating the same
DE202004010990U1 (de) * 2003-07-25 2004-10-28 Bartenbach, Christian, Aldrans Leuchte
DE102004019137A1 (de) * 2004-04-16 2005-11-17 Trilux-Lenze Gmbh + Co Kg Leuchtenfeld
US20090109689A1 (en) * 2007-10-25 2009-04-30 Lsi Industries, Inc. Reflector
EP2177818A1 (fr) * 2008-10-17 2010-04-21 BöSha Technische Produkte GmbH & Co. KG Unité d'éclairage dotée d'une lanterne de rue
TW201017052A (en) * 2008-10-27 2010-05-01 Delta Electronics Inc Illuminant device and light reflecting shade thereof
US9052088B2 (en) * 2013-09-20 2015-06-09 Whelen Engineering Company, Inc. Tuned composite optical arrangement for LED array

Also Published As

Publication number Publication date
EP2994695B1 (fr) 2017-06-14
WO2014173989A1 (fr) 2014-10-30
US20160069533A1 (en) 2016-03-10
DE102013207609A1 (de) 2014-10-30

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