EP2312208A1 - Light reflector - Google Patents

Light reflector Download PDF

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Publication number
EP2312208A1
EP2312208A1 EP20090173309 EP09173309A EP2312208A1 EP 2312208 A1 EP2312208 A1 EP 2312208A1 EP 20090173309 EP20090173309 EP 20090173309 EP 09173309 A EP09173309 A EP 09173309A EP 2312208 A1 EP2312208 A1 EP 2312208A1
Authority
EP
European Patent Office
Prior art keywords
characterized
luminaire
bottom
wall
wall parts
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.)
Withdrawn
Application number
EP20090173309
Other languages
German (de)
French (fr)
Inventor
Dieter Hackfort
Ioannis Laftsidis
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.)
JORDAN REFLEKTOREN GmbH and Co KG
Original Assignee
JORDAN REFLEKTOREN GmbH and Co KG
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 JORDAN REFLEKTOREN GmbH and Co KG filed Critical JORDAN REFLEKTOREN GmbH and Co KG
Priority to EP20090173309 priority Critical patent/EP2312208A1/en
Publication of EP2312208A1 publication Critical patent/EP2312208A1/en
Application status is Withdrawn legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/10Construction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00Lighting devices intended for fixed installation
    • F21S8/02Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters

Abstract

The present invention relates to a luminaire reflector (1), comprising a pot-shaped, substantially truncated cone-shaped reflector body (2) with an up to a light exit opening (4) in diameter increasing, substantially rotationally symmetrical peripheral wall (6) and a light exit opening (4th ) enclosing peripheral edge web (12). The peripheral wall (6) of the reflector body (2) is longitudinally divided into at least two shell-like wall parts (8), wherein each wall part (8) has a part of the peripheral edge web (12).

Description

  • The present invention relates according to the preamble of claim 1, a luminaire reflector consisting of a pot-like, substantially frusto-conical reflector body with an up to a light exit opening in diameter increasing, substantially rotationally symmetrical peripheral wall and the light exit opening enclosing peripheral edge web.
  • Reflectors of this kind, frequently also called downlight reflectors or floodlights, are installed, for example, in or on ceilings such that they lie with their light exit opening substantially in or parallel to the ceiling plane. The peripheral edge web is usually also in the plane of the light exit opening. It should be noted that the term "substantially frusto-conical" means that the peripheral wall of the reflector body also curved in the longitudinal direction, in particular outwardly convex, and thus may be formed approximately parabolic. In addition, the term "substantially rotationally symmetrical" means that the reflector can also have a facet-like surface structure, so that it is not exactly rotationally symmetrical.
  • Known reflectors of the type mentioned are usually produced in one forming process in a substantially rotationally symmetrical manner from an originally flat sheet metal blank (blank). This is associated with quite a lot of effort. In addition, this embodiment has the disadvantage that such reflectors finished only after the forming surface, for example, can be mirrored, which as a rule a non-optimal reflection efficiency is achieved.
  • There are also known other reflectors, which are composed of several different parts, wherein the different parts each from an already pre-finished sheet metal sheet are bent. However, these multi-part reflectors have, on the one hand, an appearance deviating significantly from a rotationally symmetrical reflector shape and, on the other hand, a very poor mechanical stability, in particular in the region of the light exit opening due to a missing circumferential edge web.
  • The present invention is based on the object to provide a luminaire reflector of the type mentioned, generic type, which is simple and inexpensive to produce, and ensures high mechanical stability and high reflection efficiency.
  • This is achieved by the features of independent claim 1 according to the invention. Advantageous design features of the invention are contained in the dependent claims and in the subsequent description.
  • Accordingly, the invention provides that the peripheral wall of the reflector body is longitudinally divided into at least two shell-like wall parts, wherein each wall part has a part of the peripheral edge web. The wall parts are firmly connected to each other in the region of longitudinal dividing lines. For this purpose, the wall parts in the region of the parting lines preferably have radially outwardly bent connecting webs, which are connected to one another in pairs, in particular by means of clinching connections or similar point connections. Each wall part thus forms part of the peripheral wall, so that the substantially rotationally symmetrical appearance is advantageously maintained. The inner surface of the reflector is interrupted only by the longitudinal dividing lines, which are barely visible. Due to the mechanically very strong connection of the wall parts as well as by the angled, generally annular and preferably lying in the plane defined by the light exit opening peripheral edge web a high mechanical stability of the reflector is also achieved in the light exit opening.
  • As a result of the configuration according to the invention, the wall parts can advantageously be cut to size from a precoated sheet metal sheet and shaped by a pressure bending process. In addition, each part of the peripheral edge web and the connecting webs are formed. By using the pre-refined material, a high efficiency is achieved.
  • In a further advantageous embodiment of the invention, the reflector body is closed on its side opposite the light exit opening, having a smaller diameter side with a bottom. Advantageously, the floor may be connected to the reflector body via tab connections. For this purpose, the wall parts of the reflector body have peripheral, distributed over the circumference connecting straps, which are inserted through slot openings of the soil and then deformed, in particular radially inwardly or outwardly bent or twisted. The bottom also gives the reflector body a very high stability in this area opposite the light exit opening and thus gives the entire reflector body its exact basic shape.
  • Like the reflector body, the bottom also consists of a sheet metal material, which at least strongly reflects light on the inside, in particular of a reflective coated aluminum sheet. A particularly suitable material is available under the name "MIRO" (registered trademark of the company ALANOD Aluminum-Veredlung GmbH and Co. KG). In this case, the sheet material may have a smooth, high-gloss surface or a faceted profiled, but also high-gloss surface.
  • The at least two-part design of the peripheral wall of the reflector body results in the advantageous possibility of forming the wall parts with different surfaces. As a result, in particular an asymmetric reflection effect can be achieved. For example, in a three-part design of the peripheral wall, only one of the wall parts a have faceted profiled surface, while the other wall parts have high gloss surfaces. But this can also be provided vice versa.
  • Based on two illustrated in the drawings, preferred embodiments of the invention will be explained in more detail. Showing:
  • Fig. 1
    a perspective view of a reflector according to the invention in a first embodiment,
    Fig. 2
    a side view in the direction of arrow II according to Fig. 1 .
    Fig. 3
    a plan view of the side of a floor in the direction of arrow III according to Fig. 2 .
    Fig. 4
    a representation like in Fig. 1 a second embodiment of the reflector according to the invention,
    Fig. 5
    a side view in the direction of arrow V according to Fig. 4 and
    Fig. 6
    a plan view in the direction of arrow VI according to Fig. 5 analogous to the representation in Fig. 3 ,
  • In the various figures of the drawing, like parts are always provided with the same reference numerals.
  • A luminaire reflector 1 according to the invention consists of a hollow, essentially frusto-conical reflector body 2 with a circumferential wall 6 which increases in diameter, in particular conically up to a light exit opening 4. The term "conical" or "substantially frusto-conical", however, means that the circumferential wall 6 of the reflector body 2 in principle Also curved in the longitudinal direction between the side with the smaller diameter and the larger light exit opening 4, z. B. outwardly convex and thus concave inside, may be formed.
  • According to the invention, the reflector body 2 is subdivided into at least two wall parts 8 in the longitudinal direction. Thus, in each case between two circumferentially adjacent wall parts 8, a longitudinal dividing line 10 is formed (s. Fig. 1 and 4 ). In addition, the reflector body 2 has a circumferential edge web 12 which surrounds the light exit opening 4 and is outwardly angled, which part is in each case an integral part of the respective wall part 8. The edge web 12 is of annular overall design and lies exactly or at least approximately in the plane defined by the light exit opening 4 (FIG. Fig. 2 and 5 ).
  • The wall parts 8 are firmly connected to one another in the region of the parting lines 10 via connecting webs 14 which are angled radially outwards and run in the longitudinal direction of the peripheral wall 6. Preferably, the connecting webs 14 are connected in pairs flat to each other via point connections 16, and in particular via so-called clinching joints, inextricably linked. Alternatively, a connection can also be made by riveting or by welding points.
  • The point connections 16 are distributed over the length of the connecting webs 14. The number of point connections 16 required depends on the length of the connecting webs 14 or the height of the reflector body 2. As a rule, three to five point connections 16 will be sufficient for the connection of two connecting webs 14.
  • In the illustrated, preferred embodiments, the peripheral wall 6 of the reflector body 2 consists of only two similar wall parts 8. The connecting webs 14 define a diametrical division plane of the reflector body 2. Alternatively, however, the peripheral wall 6 also consist of at least three wall parts 8 with preferably radially symmetrical division.
  • In the illustrated, preferred embodiments of the reflector body 2 is on its opposite the light exit opening 4, a smallest diameter having side with a bottom 18 closed. Advantageously, the bottom 18 is connected to the reflector body 2 via tab connections 20. For this purpose, the wall parts 8 of the reflector body 2 formed as one-piece extensions, peripheral, distributed over the circumference arranged connecting straps 22 which are inserted through slot openings (not labeled) of the bottom 18 and then reshaped so that they fix the bottom 18 on the reflector body 2 , Preferably, the connecting plates 22 are bent radially inwardly or outwardly, but they can also be rotated only about their longitudinal axes.
  • In a further preferred embodiment, the bottom 18 is divided by a diametrically extending bend line 24 into two partial surfaces 18a and 18b. On the one hand, this feature also contributes to increased stability. On the other hand, this embodiment of the bottom 18 has an influence on the reflection properties of the reflector 1 according to the invention. For this purpose, the partial surfaces 18a and 18b are aligned on the inside of the reflector body 2 at an angle α which is greater than 180 °. In particular, the illustrations in Fig. 2 and 5 directed. Preferably, the angle α is in the range of 190 ° to 210 °. As a result of this embodiment, the base 18 reflects the light of at least one illuminant (not shown) at an angle to the side in the direction of the circumferential wall 6.
  • The bending line 24 of the bottom 18 extends in the illustrated embodiments perpendicular to the lying between the two wall parts 8, diametral parting plane of the reflector body. 2
  • As an alternative to the illustrated embodiments, the bottom 18 may also consist of two partial surfaces which form an angle α <180 ° in the interior of the reflector body 2 lock in. In addition, the bottom 18 can also be subdivided into more than two partial surfaces, wherein adjacent partial surfaces can be aligned at an arbitrary angle α 180 ° to one another.
  • The peripheral wall 6 of the reflector body 2 has in the vicinity of the side with the smaller diameter, ie in the vicinity of the bottom 18, at least one passage opening 26 for a lighting means. In the case of the first execution according to Fig. 1 to 3 is a single passage opening 26 seen in the circumferential direction centrally disposed in one of the two wall parts 8 of the reflector body 2, and that symmetrical to a defined by the bending line 24 diametral center plane of the reflector body 2. The single passage opening 26 is formed in particular circular. An unillustrated light source can be introduced through the passage opening 26 into the reflector body 2. Their light is then reflected by the bottom 18 and the peripheral wall 6 and exits through the light exit opening 4.
  • In the embodiment according to 4 to 6 two through-openings 26a and 26b are arranged symmetrically in the circumferential direction in the wall part 8 as well as symmetrically to the bending line 24 for one illuminant in the circumferential direction. In this case, the lead-through openings 26a, b may each be formed approximately rectangular.
  • In embodiments not shown, the bottom 18 may also be flat (without kink). In addition, at least one lighting-through opening can be provided in the region of the bottom 18 instead of in the circumferential wall 6. The bottom 18 may - as shown - have a circular outer edge, but it can also be another, z. B. polygonal (such as octagonal) surface shape. In addition, the bottom 18 also suitable, z. B. integrally molded and / or fixed mounting elements for any components (eg., A light socket) and / or for mounting the reflector body 2 within a luminaire or a luminaire housing.
  • In addition, it should be noted that the / each lamp-through opening of the peripheral wall 6 and the bottom 18 may be formed with any, bulb-specific opening shape.
  • In all cases, the reflector body 2, and preferably also the bottom 18, consists of a sheet metal material which reflects at least strongly on the inside, in particular of a reflective coated aluminum sheet. In this case, the sheet material may have a smooth or faceted profiled, but in any case high-gloss, practically mirrored surface.
  • The sheet metal material preferably used may have a thickness of in particular 0.5 mm. The reflector 1 can be designed with almost any dimensions and proportions, for example, with an axially measured height in the range of 100 to 200 mm (in particular 120 to 160 mm), a largest diameter in the range of 150 to 250 mm and a smallest diameter in the range from 100 to 200 mm.
  • The invention is not limited to the illustrated and described embodiments, but also includes all the same in the context of the invention embodiments. Furthermore, the invention has hitherto not been limited to the feature combination defined in claim 1, but may also be defined by any other combination of specific features of all individually disclosed individual features. This means that in principle virtually every individual feature of claim 1 can be omitted or replaced by at least one individual feature disclosed elsewhere in the application. In this respect, the claim 1 is to be understood only as a first formulation attempt for an invention.

Claims (15)

  1. Luminaire reflector (1), comprising a pot-shaped, substantially frusto-conical reflector body (2) with an up to a light exit opening (4) in diameter increasing, substantially rotationally symmetrical peripheral wall (6) and the light exit opening (4) enclosing peripheral edge web (12 )
    characterized in that the peripheral wall (6) of the reflector body (2) is longitudinally divided into at least two shell-like wall parts (8), wherein each wall part (8) has a part of the peripheral edge web (12).
  2. Luminaire reflector according to claim 1,
    characterized in that the peripheral wall (6) is divided radially symmetrically into similar wall parts (8).
  3. Luminaire reflector according to claim 1 or 2,
    characterized in that the peripheral wall (6) is divided diametrically and consists of two half-shell-like wall parts (8).
  4. Luminaire reflector according to one of claims 1 or 2,
    characterized in that the peripheral wall (6) consists of at least three wall parts (8).
  5. Luminaire reflector according to one of claims 1 to 4,
    characterized in that the wall parts (8) in pairs in the region of longitudinal separating lines (10) are firmly connected, for which preferably the wall parts (8) in the region of the separating lines (10) radially outwardly angled connecting webs (14) each having in pairs, in particular via clinching connections or similar point connections (16) are interconnected.
  6. Luminaire reflector according to one of claims 1 to 5,
    characterized in that the reflector body (2) on its light exit opening (4) opposite, a smaller diameter side having a bottom (18) is closed.
  7. Luminaire reflector according to claim 6,
    characterized in that the bottom (18) is connected to the peripheral wall (6) of the reflector body (2) via tab connections (20), wherein preferably the wall parts (8) of the reflector body (2) have peripheral connection tabs (22) arranged distributed over the circumference ) which are inserted through slot openings of the bottom (18) and deformed.
  8. Luminaire reflector according to claim 6 or 7,
    characterized in that the bottom (18) via at least one fold line (24) in at least two partial surfaces (18a, 18b) is divided, wherein the adjacent partial surfaces (18a, 18b) on the inside of the reflector body (2) at an angle (α ) are aligned with each other, which is larger or smaller than 180 °.
  9. Luminaire reflector according to claim 6 or 7,
    characterized in that the bottom (18) is substantially planar and in particular is arranged parallel to the plane of the light exit opening (4).
  10. Luminaire reflector according to one of claims 1 to 9,
    characterized in that the peripheral wall (6) of the reflector body (2) in the vicinity of the side with the smaller diameter at least one passage opening (26 / 26a, 26b) for a lighting means.
  11. Luminaire reflector according to one of claims 6 to 10,
    characterized in that the bottom (18) has at least one passage opening (4) for a lighting means.
  12. Luminaire reflector according to one of claims 1 to 11,
    characterized in that the reflector body (2) and / or the bottom (18) consist of a surface-finished, at least on the inside strongly light-reflecting sheet metal material, in particular of a reflective coated aluminum sheet, consist / consists.
  13. Luminaire reflector according to one of claims 1 to 12,
    characterized in that the peripheral wall (6) and / or the bottom (18) are formed on the inside smooth-surfaced and / or faceted profiled.
  14. Luminaire reflector according to one of claims 1 to 13,
    characterized in that the wall parts (8) of the peripheral wall (6) are formed differently with respect to their reflection properties, wherein preferably at least one of the wall parts (8) profiled like a facet and the other wall parts (8) are smooth-surfaced, the different types of Wall parts (8) are preferably arranged asymmetrically circumferentially distributed.
  15. Luminaire reflector according to one of claims 6 to 14,
    characterized in that the bottom (18) has a circular or polygonal outer edge and in particular support elements for mounting the reflector body (2) in a luminaire and / or for any additional elements.
EP20090173309 2009-10-16 2009-10-16 Light reflector Withdrawn EP2312208A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20090173309 EP2312208A1 (en) 2009-10-16 2009-10-16 Light reflector

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP20090173309 EP2312208A1 (en) 2009-10-16 2009-10-16 Light reflector
DE201020002776 DE202010002776U1 (en) 2009-10-16 2010-02-24 Light reflector
EP10159488A EP2312207A1 (en) 2009-10-16 2010-04-09 Reflector for a luminaire
DE201020004806 DE202010004806U1 (en) 2009-10-16 2010-04-09 Light reflector
US12/813,898 US20110090705A1 (en) 2009-10-16 2010-06-11 Luminaire reflector

Publications (1)

Publication Number Publication Date
EP2312208A1 true EP2312208A1 (en) 2011-04-20

Family

ID=41490396

Family Applications (2)

Application Number Title Priority Date Filing Date
EP20090173309 Withdrawn EP2312208A1 (en) 2009-10-16 2009-10-16 Light reflector
EP10159488A Withdrawn EP2312207A1 (en) 2009-10-16 2010-04-09 Reflector for a luminaire

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP10159488A Withdrawn EP2312207A1 (en) 2009-10-16 2010-04-09 Reflector for a luminaire

Country Status (3)

Country Link
US (1) US20110090705A1 (en)
EP (2) EP2312208A1 (en)
DE (2) DE202010002776U1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4242727A (en) * 1979-03-29 1980-12-30 Gte Products Corporation Luminaire reflector
US6152583A (en) * 1998-02-20 2000-11-28 Genlyte Thomas Group Llc Adjustable luminaire having pivotable lamp and reflector assembly
US20020071280A1 (en) * 2000-12-11 2002-06-13 Stahl Kurt A. Split reflector
US20020109983A1 (en) * 2001-02-15 2002-08-15 3F Filippi S.P.A. Luminaire, particularly of the ceiling-mounted type or of the type for recessed fitting in ceilings and walls
DE202006003988U1 (en) * 2006-03-14 2006-05-04 Trilux-Lenze Gmbh + Co. Kg Light especially built in downlight for suspended ceilings has segmented reflectors between upper and lower holders having intensifying reflective coatings
US20060193135A1 (en) * 2005-02-25 2006-08-31 Hein William A Optical reflector

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Publication number Priority date Publication date Assignee Title
US4538215A (en) * 1981-09-08 1985-08-27 Marsh Melvin J De Halide and like light reflector and socket assembly
US5287259A (en) * 1991-11-27 1994-02-15 Lorin Industries, Inc. Light reflector assembly
US6203176B1 (en) * 1998-12-14 2001-03-20 Musco Corporation Increased efficiency light fixture, reflector, and method
DE19750269C1 (en) * 1997-11-13 1999-05-20 Heraeus Noblelight Gmbh Reflector for optical light source
US6464378B1 (en) * 1998-12-14 2002-10-15 Lsi Industries Inc. Self-standing reflector for a luminaire and method of making same
DE19910907B4 (en) * 1999-03-11 2008-09-25 Siteco Beleuchtungstechnik Gmbh Attachment for a recessed ceiling luminaire, in particular grid for insertion in a reflector and associated lamp
US6338564B1 (en) * 2000-02-28 2002-01-15 Hubbell Incorporated Optical housing with vertical light source
US6478454B1 (en) * 2000-08-31 2002-11-12 Genlyte Thomas Group Llc Adjustable uplight luminaire with an adjustable reflector
US7985017B2 (en) 2004-12-28 2011-07-26 Hampton Products International Corporation Luminaire having plug-in style electrical connector, and a separately plug-in mountable motion detector or other actuation device
US20070297187A1 (en) * 2006-06-26 2007-12-27 Peter Tsai Lamp socket assembly
US8376600B2 (en) * 2007-06-29 2013-02-19 Orion Energy Systems, Inc. Lighting device
DE102008029743A1 (en) * 2008-06-25 2009-12-31 Manfred Grimm Method for producing a downlight reflector

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4242727A (en) * 1979-03-29 1980-12-30 Gte Products Corporation Luminaire reflector
US6152583A (en) * 1998-02-20 2000-11-28 Genlyte Thomas Group Llc Adjustable luminaire having pivotable lamp and reflector assembly
US20020071280A1 (en) * 2000-12-11 2002-06-13 Stahl Kurt A. Split reflector
US20020109983A1 (en) * 2001-02-15 2002-08-15 3F Filippi S.P.A. Luminaire, particularly of the ceiling-mounted type or of the type for recessed fitting in ceilings and walls
US20060193135A1 (en) * 2005-02-25 2006-08-31 Hein William A Optical reflector
DE202006003988U1 (en) * 2006-03-14 2006-05-04 Trilux-Lenze Gmbh + Co. Kg Light especially built in downlight for suspended ceilings has segmented reflectors between upper and lower holders having intensifying reflective coatings

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
DE202010002776U1 (en) 2010-07-08
EP2312207A1 (en) 2011-04-20
US20110090705A1 (en) 2011-04-21
DE202010004806U1 (en) 2010-08-19

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