EP2734782B1 - Anordnung zur lichtabgabe - Google Patents

Anordnung zur lichtabgabe Download PDF

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Publication number
EP2734782B1
EP2734782B1 EP12737278.7A EP12737278A EP2734782B1 EP 2734782 B1 EP2734782 B1 EP 2734782B1 EP 12737278 A EP12737278 A EP 12737278A EP 2734782 B1 EP2734782 B1 EP 2734782B1
Authority
EP
European Patent Office
Prior art keywords
light
lenses
arrangement
reflector
emitting light
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.)
Active
Application number
EP12737278.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2734782A2 (de
Inventor
Stephan Ebner
Patrik Gassner
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.)
Zumtobel Lighting GmbH Austria
Original Assignee
Zumtobel Lighting GmbH Austria
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 Zumtobel Lighting GmbH Austria filed Critical Zumtobel Lighting GmbH Austria
Priority to PL12737278T priority Critical patent/PL2734782T3/pl
Publication of EP2734782A2 publication Critical patent/EP2734782A2/de
Application granted granted Critical
Publication of EP2734782B1 publication Critical patent/EP2734782B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/28—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
    • 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
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • 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
    • F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to an arrangement for emitting light with a plurality of LED light sources and a plurality of lenses arranged in the light emission direction after the LED light sources.
  • LED lamps In elongated luminaires or arrangements for the delivery of light, which are used, for example, in the commercial sector, fluorescent lamps have hitherto frequently been used as the light source.
  • the progressive development of LEDs now leads more and more to the fact that, for example, fluorescent lamps are replaced by corresponding LEDs. This results on the one hand from the fact that LED light sources have considerable advantages in terms of life and energy efficiency compared to conventional bulbs.
  • the luminous intensities that can be achieved with the help of LEDs are now sufficiently high so that LED light sources can easily replace conventional light sources such as fluorescent lamps.
  • the LED light sources are associated with lenses which are arranged in the emission direction after the LED light sources.
  • Several such lenses are in this case joined together to form an elongate optical element, wherein preferably each LED light source is assigned in each case exactly one lens of the optical element.
  • Fig. 1 now three differently configured optical elements 2 are shown. Such optical elements 2 are in this case usually produced by injection molding.
  • Fig. 2 and 4 go two possible light intensity distribution curves in Fig. 1 shown lenses, the curves shown there are the values in the C0 / C180 plane, ie in the transverse direction to the in Fig. 1 shown optical elements 2 correspond.
  • light intensity distribution curve has two separate wings, each having a tip region at 30 ° and adjoining flanking areas on both sides, where the light intensity drops to a much lower value than in the tip region, wherein one of the flanks to the angle range around 0 ° out drops.
  • Such a light intensity distribution is, for example, then advantageous if a corresponding arrangement for emitting light along a corridor is arranged, each of which has shelves on the right and left, which are to be illuminated by the arrangement for emitting light accordingly.
  • Fig. 3 Now, such an arrangement for light emission 1 is shown, which has a housing 3 with a light exit opening, wherein in the housing 3, the LED light sources 4 are arranged and the assembled together to the optical element 2 lenses 6, the housing 3 in the light emission direction.
  • Fig. 4 is now compared to Fig. 2 a slightly different light intensity distribution curve of the lenses 6 shown. Through this, a very wide illumination of the area below the arrangement for light emission 1 is achieved.
  • an elongated arrangement for emitting light which has a plurality of LED light sources and a plurality of lenses arranged in the light emission direction after the LED light sources, the lenses being joined together to form an elongated optical element and a reflector for influencing the light emission direction of the lenses
  • Lens of emitted light is arranged and the luminous intensity distribution curve of the light emitted from each lens in the C0 / C180 plane has one or more separate wings, each substantially in an angular range of 0 ° to 90 °, with respect to an axis parallel to the Lichtabstrahlraum through the center of gravity of the respective lens, lie and in each case a tip region and adjoining flank regions on both sides, in which the light intensity drops to a significantly lower value than in the tip region, the tip region being at angles greater than 0 ° and ei ne of the flanks falls to the angle range by 0 ° out.
  • the reflector By the reflector, it is now possible to change the light intensity distribution or Lichtabstrahl characterizing the lenses accordingly, whereby one and the same form of the lenses can be used for a variety of lighting tasks.
  • the reflector is used here in the transverse direction.
  • each LED light source is assigned in each case exactly one lens of the optical element.
  • the arrangement for emitting light has a housing with a light exit opening, wherein in the housing, the plurality of LED light source are arranged and the plurality of lenses close the housing in the light emission direction.
  • the luminous intensity distribution curve may have two wings which are substantially symmetrical with respect to an axis parallel to the light emission direction through the light centroid of the respective lens.
  • the reflector is formed and arranged laterally in front of the lenses, that substantially all of the light emitted by the lenses is directed to the opposite side of the reflector of the lenses.
  • the side of the reflector facing away from the lenses is designed as an advertising / information carrier.
  • the reflector is a diaphragm which is designed and arranged in front of the lens in such a way that the emission angle of the light emitted by the lens is reduced or narrowed in the C0 / C180 plane Lens may already be designed such that it is done by glare deflation in the C90 / C270 level. In this way, a glare is achieved in a relatively wide-angle lens, whereby a corresponding arrangement for light output, for example, can be used at computer workstations or in the cashier area of a store.
  • Fig. 3 is, as already explained, an arrangement known from the prior art for emitting light 1 shown.
  • the arrangement for emitting light 1 has a housing 3 with a light exit opening, wherein LED light sources 4 are arranged in the housing and the light exit opening is closed by an optical element 2.
  • the optical element 2 here consists of several lenses 6, which are arranged in the light emission direction after the LED light sources 4. Such optical elements 2, which are composed of a plurality of lenses 6, are exemplified in FIG Fig. 1 shown.
  • Fig. 2 and 4 For example, two different light emission characteristics of such lenses 6 are shown in the C0 / C180 plane and thus in the transverse direction to the optical element 2.
  • light intensity distribution curve is particularly suitable, for example, for shops, in which shelves are arranged along corridors left and right, which are to be particularly illuminated by appropriate arrangements for light output 1.
  • the light intensity distribution curve shown is particularly preferred when a relatively large area below such an arrangement is to be illuminated for light emission 1, since in this case the lenses 6 have a relatively wide-radiating characteristic.
  • lenses are now used in particular, the in Fig. 2 Have shown light intensity distribution curve.
  • a device 5 is still provided in the arrangement for emitting light 1, which allows a mechanical attachment of the arrangement for emitting light 1 to a support rail and also contacted within the support rail extending lines.
  • a reflector 7, 8 for influencing the light output of the lenses 6 is arranged in the light emission direction after the lenses 6.
  • a reflector 7, 8 for influencing the light output of the lenses 6 is arranged in the light emission direction after the lenses 6.
  • Fig. 5 and 7 For this purpose, two embodiments of the invention are shown.
  • a corresponding embodiment variant is shown, in which a substantially flat or just designed reflector 7 is arranged in the longitudinal direction of the arrangement for emitting light 1 and the optical element 2 on one side of the lenses 6, whereby the through the lenses 6 in this Directed light beams are reflected or directed towards the opposite side.
  • the reflector 7 is used according to the invention in lenses 6, which correspond to a light intensity distribution curve Fig. 2 have, which then with appropriate design and arrangement of the reflector 7, the in Fig. 6 shown light intensity distribution curve.
  • the light output only takes place to one side, or the light intensity distribution curve only one wing, in contrast to the light intensity distribution curve in Fig. 2 with two wings.
  • Such a configuration is, for example, desirable if shelves are arranged along one passage only on one side and, accordingly, only these Side should be lit. In this case, however, it is no longer necessary that in an arrangement for emitting light 1, the entire optical element 2 must be replaced. Rather, it is readily possible that an arrangement for emitting light 1 with a corresponding optical element 2 is installed, and then according to the local conditions subsequently a reflector 7 of the arrangement for light emission 1 is assigned.
  • the desired Lichtabstrahl characterizing or the light intensity distribution of the reflector can have any shapes, for example. Curved have. Furthermore, there is also the possibility that the entire light from the lenses is directed onto a reflector.
  • the direction of application of the reflector is provided in the case of linear luminaires in the transverse direction.
  • the rear side of a preferably flat or flat reflector can be equipped with advertising / information carriers, wherein the rear side is illuminated by the transversely extending web of the lenses.
  • the reflector 8 in the in Fig. 7 embodiment shown formed as a panel.
  • the diaphragm 8 is shaped and positioned after the lens 6 such that the emission angle of the light emitted by the lenses 6 is reduced or narrowed.
  • arrangement for light output 1 otherwise corresponds to the arrangement for the light output 1 from Fig. 3 , wherein the housing 3 here has slightly longer legs for receiving the aperture 8.
  • This reduction or narrowing of the emission angle of the light emitted by the lens 6 takes place through the diaphragm 8 in the transverse direction of the arrangement for emitting light 1 or the optical element 2 Fig. 8 be taken light emission characteristic or luminous intensity distribution curve, in contrast to the in Fig. 2 shown light intensity distribution curve a has lower emission angle whereby compared to the in Fig. 3 shown arrangement for light emission 1, the glare 8 is optimized accordingly by the aperture 8.
  • aperture 8 is used according to the invention with lenses 6, which correspond to a luminous intensity distribution curve Fig. 2 exhibit.
  • Fig. 7 consists of the aperture 8 of two mounted on each side curved reflective elements, these elements as well as the reflector 7 in Fig. 5 are arranged in the longitudinal direction of the arrangement for emitting light 1 and the optical element 2.
  • each reflective element thus substantially influences one of the two wings, whereby a change of the wings or the angle between the two wings is achieved.
  • the aperture can also have a correspondingly different shape.
  • the diaphragm is designed such that a circumferential glare is realized by the diaphragm.
  • the lenses can already be designed such that a glare in the longitudinal direction already takes place through the lenses.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Led Device Packages (AREA)
EP12737278.7A 2011-07-19 2012-07-18 Anordnung zur lichtabgabe Active EP2734782B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12737278T PL2734782T3 (pl) 2011-07-19 2012-07-18 Układ do emisji światła

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011079404A DE102011079404A1 (de) 2011-07-19 2011-07-19 Anordnung zur Lichtabgabe
PCT/EP2012/064044 WO2013011045A2 (de) 2011-07-19 2012-07-18 Anordnung zur lichtabgabe

Publications (2)

Publication Number Publication Date
EP2734782A2 EP2734782A2 (de) 2014-05-28
EP2734782B1 true EP2734782B1 (de) 2015-05-27

Family

ID=46545381

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12737278.7A Active EP2734782B1 (de) 2011-07-19 2012-07-18 Anordnung zur lichtabgabe

Country Status (6)

Country Link
US (1) US9360172B2 (zh)
EP (1) EP2734782B1 (zh)
CN (1) CN103688106B (zh)
DE (1) DE102011079404A1 (zh)
PL (1) PL2734782T3 (zh)
WO (1) WO2013011045A2 (zh)

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DE202015105154U1 (de) * 2015-09-30 2017-01-02 Zumtobel Lighting Gmbh Lichtbandsystem-Leuchte mit Reflektor, Lichtbandsystem und optisches Linsenelement
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Also Published As

Publication number Publication date
CN103688106B (zh) 2017-06-20
CN103688106A (zh) 2014-03-26
DE102011079404A1 (de) 2013-01-24
US20140160756A1 (en) 2014-06-12
US9360172B2 (en) 2016-06-07
PL2734782T3 (pl) 2015-10-30
WO2013011045A2 (de) 2013-01-24
WO2013011045A3 (de) 2013-04-04
EP2734782A2 (de) 2014-05-28

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