EP2690355A1 - Eclairage - Google Patents

Eclairage Download PDF

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Publication number
EP2690355A1
EP2690355A1 EP13167901.1A EP13167901A EP2690355A1 EP 2690355 A1 EP2690355 A1 EP 2690355A1 EP 13167901 A EP13167901 A EP 13167901A EP 2690355 A1 EP2690355 A1 EP 2690355A1
Authority
EP
European Patent Office
Prior art keywords
optical disk
projections
section
cross
prismatic
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Withdrawn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
EP13167901.1A
Other languages
German (de)
English (en)
Inventor
Dietmar Czekay
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.)
BaeRo GmbH and Co KG
Original Assignee
BaeRo 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 BaeRo GmbH and Co KG filed Critical BaeRo GmbH and Co KG
Publication of EP2690355A1 publication Critical patent/EP2690355A1/fr
Withdrawn legal-status Critical Current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
    • F21V5/00—Refractors for light sources
    • F21V5/008—Combination of two or more successive refractors along an optical axis
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/405—Lighting for industrial, commercial, recreational or military use for shop-windows or displays
    • 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
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • 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

  • the present invention relates to a luminaire having a light source and a transparent optical disk array disposed opposite to the light source for directing the light emitted from the light source, the optical disk array each having a main surface at its side facing the light source and at its opposite side and having prismatic structures on at least one of the major surfaces. Furthermore, the present invention relates to an optical disk assembly for such a luminaire.
  • Goods presentation areas such as refrigerated counters, fruit pots, shelves, etc. are usually artificially illuminated.
  • the aim is to illuminate the surfaces as evenly as possible, which is due to the usual elongated rectangular shape of the sales furniture partly only partially possible.
  • the present invention has the object, a luminaire of the type mentioned in such a way that a Batwing light distribution curve can also be generated when using LEDs in a simple manner.
  • a luminaire and an optical disk arrangement of the type mentioned above in that the optical disk arrangement at its one major surface a prismatic structure and with a plurality of mutually parallel projections which extend in a straight line substantially over the length of the plate and in particular, having an isosceles triangular cross section, and on the other major surface, a prism-like structure having a plurality of mutually parallel protrusions extending substantially the length of the major surface and forming a uniform undulating structure in cross-section; extending directions the projections on the opposite major surfaces of the plate assembly are offset by 90 ° to each other.
  • the desired - in particular symmetrical - Batwing light distribution curve automatically adjusts when the light emitted by a light source passes through a plate arrangement according to the invention formed, which has on their main surfaces the proposed and offset by 90 ° to each other prism structures. This is especially true when LEDs or LED arrays are used as the light sources, which couple their light straight into the optical disk array.
  • the prism-like structures on the two major surfaces are uniform, i. E. the respective projections and intermediate recesses extend in a straight line and continuously over the plate.
  • the projections and intermediate recesses should form a regular contour in cross-section, in which the cross-section of adjacent projections and adjacent recesses is identical and does not change over the length of the projections and recesses.
  • the cross-section of the projections of the prismatic structure on the one major surface of the optical disk assembly is in the form of right-angled, isosceles triangles. It is also advantageous if the projections of triangular cross-section directly adjoin one another without intermediate regions.
  • the wave-like structure on the other major surface of the optical disc array is preferably formed by wave crests and wave troughs which are continuous with each other.
  • the Wave crests and troughs formed by circular arc and in particular semi-circular sections.
  • the plate assembly by a single transparent optical plate, in which case the prismatic or prism-like structures are provided on the opposite major surfaces of the optical disc.
  • the optical disk arrangement can also be formed from two transparent optical disks lying one behind the other in the direction of emission, the main surfaces with the prismatic structures then being provided on the main surfaces of the two optical disks facing away from one another.
  • the optical disk array is conveniently located in close proximity to the LEDs.
  • a reflector may be provided, in which case an optical disk arrangement is positioned in the region of a light exit opening of the reflector.
  • the luminaire comprises a main body 1, which carries on its upper side an LED module 2 and is provided along its periphery with a plurality of cooling fins 3 protruding outwards.
  • the LED module 2 comprises, in a manner known per se, a substrate which is made of aluminum or another good heat-conducting material, and a plurality of LEDs, which are fastened to the substrate and arranged there in regular rows and columns.
  • an optical disk 4 is provided, which consists of a transparent material.
  • the optical disk 4 is provided with prismatic or prism-like structures both at its underside facing the LED module 2 and at its upper side.
  • the prismatic structure on the top ie the upper main surface of the optical disk 4, formed by a plurality of projections 5 and intermediate recesses 6, which extend over the entire plate 4 in a straight line and parallel to each other are aligned.
  • the protrusions 5 all have an identical cross-section in the shape of a right-angled, isosceles triangle, with the exception of the protrusion shown on the left-hand side, and immediately adjoin one another.
  • the prism-like structure on the lower surface of the optical disk 4 is also formed by a plurality of projections 7 extending straight along the length of the disk 4 and extending parallel to each other with their extension direction offset by 90 ° from the extending direction the projections on the top of the plate runs.
  • FIG. 7 can recognize, form the protrusions 7 and the intermediate recesses 8 on the underside of the plate a wave-like structure in which the wave crests and wave troughs merge into each other.
  • the projections 7 and the recesses 8 are each formed identically, so that a uniform wave structure results, which is consistent over the length of the projections 7.
  • the wave troughs or depressions 8 and the wave crests or projections 7 are formed by semicircles merging into one another.
  • FIGS. 4 to 6 a second embodiment of a luminaire according to the invention is provided.
  • This also includes a base body 1 with cooling fins 3 provided thereon, which carries an LED module 2 on its upper side.
  • an optical disk 9 having on its upper side a prismatic structure having a plurality of mutually parallel projections 10 extending rectilinearly the length of the disk and a cross section in the form of right-angled, isosceles triangles own, has.
  • This optical disk serves to light emitted from the LED module 2 to radiate uniformly in a reflector 11, which is provided at the top of the optical disk 9.
  • an optical disk 4 is provided, which is formed in the same way as the optical disk 4 in the first embodiment and carries on its top and on its underside different prismatic structures. So much prism structure at the top of the plate 4 is formed by a plurality of projections 5 having a cross section in the shape of right-angled isosceles triangles and immediately adjoining each other. The projections 5 extend over the length of the plate 4 parallel to each other, wherein the cross section over the length of the projections 5 remains unchanged.
  • the prism structure is formed by projections 7 and intermediate recesses 8 which form a corrugated structure as already discussed in detail in the first embodiment.
EP13167901.1A 2012-07-26 2013-05-15 Eclairage Withdrawn EP2690355A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202012102810U DE202012102810U1 (de) 2012-07-26 2012-07-26 Leuchte

Publications (1)

Publication Number Publication Date
EP2690355A1 true EP2690355A1 (fr) 2014-01-29

Family

ID=48444173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13167901.1A Withdrawn EP2690355A1 (fr) 2012-07-26 2013-05-15 Eclairage

Country Status (2)

Country Link
EP (1) EP2690355A1 (fr)
DE (1) DE202012102810U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106500069A (zh) * 2015-09-06 2017-03-15 胡祖华 Led灯具专用散热器
US10215350B2 (en) 2014-05-22 2019-02-26 Philips Lighting Holding B.V. Luminaire, especially for road lighting

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2551954A (en) * 1947-02-21 1951-05-08 John L Lehman Lighting device having a lens which gives a long and relatively narrow area of illumination
EP1225390B1 (fr) 2001-01-19 2005-09-14 BÄ*RO GmbH & Co. KG Lampe intérieure, en particulier pour illuminer des présentoirs de marchandise
US20080232093A1 (en) * 2007-03-22 2008-09-25 Led Folio Corporation Seamless lighting assembly
US20100246161A1 (en) * 2007-02-02 2010-09-30 Dai Nippon Printing Co., Ltd. Optical sheet, surface light source device, and transmission display device
US20110134648A1 (en) * 2009-12-08 2011-06-09 Industrial Technology Research Institute Light uniformization structure and light emitting module
US20110156584A1 (en) * 2008-08-08 2011-06-30 Solarkor Company Ltd. Led lighting device
DE102010014209A1 (de) 2010-04-08 2011-10-13 Siteco Beleuchtungstechnik Gmbh Leuchte mit optischer Platte

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69736578T2 (de) * 1996-02-07 2007-08-30 Nitto Jushi Kogyo K.K. Flächenhafte lichtquelle, flüssigkristallanzeigevorrichtung und asymmetrische prismenplatte
DE50106927D1 (de) * 2000-03-03 2005-09-08 Siteco Beleuchtungstech Gmbh Hohllichtleiterleuchte mit in den Hohlraum integrierter Lampe
JP4035998B2 (ja) * 2002-01-23 2008-01-23 オムロン株式会社 面光源装置、拡散板及び液晶表示装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2551954A (en) * 1947-02-21 1951-05-08 John L Lehman Lighting device having a lens which gives a long and relatively narrow area of illumination
EP1225390B1 (fr) 2001-01-19 2005-09-14 BÄ*RO GmbH & Co. KG Lampe intérieure, en particulier pour illuminer des présentoirs de marchandise
US20100246161A1 (en) * 2007-02-02 2010-09-30 Dai Nippon Printing Co., Ltd. Optical sheet, surface light source device, and transmission display device
US20080232093A1 (en) * 2007-03-22 2008-09-25 Led Folio Corporation Seamless lighting assembly
US20110156584A1 (en) * 2008-08-08 2011-06-30 Solarkor Company Ltd. Led lighting device
US20110134648A1 (en) * 2009-12-08 2011-06-09 Industrial Technology Research Institute Light uniformization structure and light emitting module
DE102010014209A1 (de) 2010-04-08 2011-10-13 Siteco Beleuchtungstechnik Gmbh Leuchte mit optischer Platte

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10215350B2 (en) 2014-05-22 2019-02-26 Philips Lighting Holding B.V. Luminaire, especially for road lighting
RU2689329C2 (ru) * 2014-05-22 2019-05-27 Филипс Лайтинг Холдинг Б.В. Осветительный прибор, особенно для дорожного освещения
CN106500069A (zh) * 2015-09-06 2017-03-15 胡祖华 Led灯具专用散热器

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