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EP3056805B2 - Langgestreckte optik für led-module - Google Patents

Langgestreckte optik für led-module Download PDF

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Publication number
EP3056805B2
EP3056805B2 EP16154987.8A EP16154987A EP3056805B2 EP 3056805 B2 EP3056805 B2 EP 3056805B2 EP 16154987 A EP16154987 A EP 16154987A EP 3056805 B2 EP3056805 B2 EP 3056805B2
Authority
EP
European Patent Office
Prior art keywords
optics
led
led module
optical system
leds
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
EP16154987.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3056805B1 (de
EP3056805A1 (de
Inventor
Björn Keßler
Thomas Goeke
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.)
Trilux GmbH and Co KG
Original Assignee
Trilux GmbH and Co KG
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Filing date
Publication date
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Application filed by Trilux GmbH and Co KG filed Critical Trilux GmbH and Co KG
Publication of EP3056805A1 publication Critical patent/EP3056805A1/de
Application granted granted Critical
Publication of EP3056805B1 publication Critical patent/EP3056805B1/de
Publication of EP3056805B2 publication Critical patent/EP3056805B2/de
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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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/504—Cooling arrangements characterised by the adaptation for cooling of specific components of 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
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • 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 invention generally relates to a lamp, in particular a linear lamp, comprising an optic that can be connected to a mounting body, comprising a plurality of individual optics and a plurality of LED modules, each of which comprises LEDs, the individual optics being arranged in an optically optimized manner in the installation position in relation to the LEDs of the LED modules. to realize a desired light distribution curve for a visual task.
  • the invention thus relates to a long lamp with long LED modules and long optical systems.
  • Optacity Long in the sense of this invention is a light that is longer than 560 to 600 mm; the width is usually much smaller at 150 to 200 mm.
  • Individual optics are several optics provided in the optics, which are assigned to the individual LEDs in the installation position and with these, i.e. preferably arranged in the optical axis of the LED, realize a highly efficient light distribution curve for the realization of the respective visual task.
  • the individual optics are preferably designed as collimator lenses in the optics.
  • LED modules are fixed to a mounting body, which is also used for thermal cooling, i.e. as a heat sink.
  • a mounting body which is also used for thermal cooling, i.e. as a heat sink.
  • the LED module usually consisting of a first plastic with a first coefficient of thermal expansion
  • the mounting body usually consisting of metal or another plastic, but in any case with a coefficient of thermal expansion that differs from the first coefficient of thermal expansion, to be matched as precisely as possible , so that lighting technology that is highly efficient due to heating can also be provided during operation.
  • the lenses or the optical system should therefore be positioned at exactly the desired position in relation to the light source, in particular the individual LEDs of an LED grid, regardless of different material pairings of the materials used for the optical system and the assembly body.
  • optics with individual lenses with a maximum length of approx. 600 mm in which a suitable, central positioning means that the plastic optic can still expand by a maximum of 1 mm relative to the LED circuit board can be compensated well.
  • DE 10 2010 016 385 A1 describes a lighting arrangement with a heat sink, at least one light-emitting diode mounted on the heat sink and anti-dazzle lighting optics mounted in front of the light-emitting diodes, the lighting optics comprising a grooved, translucent, truncated cone-shaped or essentially trapezoidal anti-glare body in cross-section, the end face of the anti-glare body with a smaller diameter having a Having recess and wherein the anti-glare body is arranged with the recess in front of the lamp that it is arranged off-axis to the truncated cone axis of the anti-glare body.
  • several anti-glare bodies can also be integrated linearly to form an optical system and attached in front of the associated light-emitting diodes mounted on the heat sink. A certain displacement of the optics compared to the circuit board due to different thermal expansion is accepted.
  • Similar lights are also from the U.S. 2011/007516 A1 , CN 201 242 134 Y , U.S. 2014/168975 A1 as well as the DE 10 2013 203912 A1 known.
  • a lamp of a different kind is from the EP 2 827 053 A1 known.
  • the invention addresses the technical problem of at least partially avoiding these disadvantages and, in particular, of ensuring precise positioning of the individual LEDs of an LED module with respect to the individual optical lenses at all times, even with long lights.
  • the invention is therefore concerned with that The problem of coordinating the mostly different linear expansions of optical systems, LED modules and assembly bodies in such a way that the efficiency of the luminaires is not negatively influenced when they heat up.
  • the invention is therefore intended to provide long, photometrically highly efficient luminaires for the realization of the light distribution curves required for the visual task with simultaneous glare control.
  • this object is essentially already achieved in the case of a linear luminaire or a light line system in that several LED modules are accommodated by the optics and are connected to it without a direct connection to the luminaire housing or the assembly body. Furthermore, the optics have a multiple of the length of an LED module. This achieves a "floating" mounting of the LED modules on the otherwise rigid assembly body to compensate for thermal expansion during operation.
  • the invention takes a completely new approach insofar as it now assigns the LED module to the optics and no longer to the assembly body or the luminaire housing.
  • Each of the LED modules includes a plate-shaped plastic carrier with an applied copper layer.
  • the LED circuit board of the LED module i.e. the plate-shaped carrier element with the LEDs applied to it adapted to the application and extending collinearly along a common longitudinal axis
  • the connection is thus realized between the optics and the LED.
  • the floating mounting according to the invention ensures that the LEDs of the LED modules are always centered in relation to the optics. If the optics expand when heated, the LED module moves with it and the centering of the LEDs to the respective lens is still guaranteed.
  • the optics are designed to accommodate the LED modules or to be connected to them. This can be done, for example, by providing receptacles or receptacle slots on the optics, which extend in the longitudinal direction of the luminaire in the installed position and into which the long sides of the LED circuit board of the LED module can be inserted or snapped in such a way that the optics in the installed position Radiation direction thus extends in the direction of the optical axis of the individual LEDs like a bridge over these LEDs, in such a way that the highest optical efficiency can be achieved at any time.
  • the optics are designed as a one-piece injection molded or extrusion injection molded part.
  • the optical efficiency in particular the degree of reflection, can be further improved if the materials of the optics and the LED modules have the same or a very similar coefficient of thermal expansion.
  • the optics have a multiple of the length of the LED modules, in particular 3 times, so that 3 LED modules are arranged collinear to one another in the direction of longitudinal extent and one behind the other in the optics.
  • Such lights can be used, for example, in offices, in corridors, e.g. installed in light channels, but also in shops or in the retail sector and even as light strips in production or factory buildings.
  • the LED module is preferably connected to or fixed in a long lens.
  • the optics are preferably manufactured in an extrusion injection molding process and the circuit board of the LED module by e.g. by laminating preferably glass fiber reinforced plastics, which are particularly preferably laminated on top of one another with alternating fiber directions, incorporating the conductor tracks and any other electronic components to form the final module or its "substrate" on which the LEDs can be attached.
  • At least one centering means is preferably provided between the optics and the LED module for connecting the LED module to the optics, eg in the form of a snap hook or a centering pin. If the optics expand due to thermal effects during operation, the LED module is taken along by this centering means to the same extent, so that each LED continues to be precisely centered in the desired optical position with respect to the optics or an optical element, such as one lens formed in optics.
  • LED modules Preferably, several, e.g. approx. 560 mm long LED modules according to the Zhaga standard are used or accommodated in optics that are twice, three times or even four times as long.
  • the optics are designed to accommodate the LED modules, e.g. B. by extending in the longitudinal direction Receiving grooves optically optimized spaced apart from the lenses spanning the LEDs of the LED module in a dome-like manner in the installed position.
  • the material of the LED module or the carrier plate (substrate) of the LED module and the optics have a similar or the same coefficient of thermal expansion.
  • Plastics that are highly effective in terms of light technology, in particular glassy plastics, have proven to be preferred materials for the manufacture of the optics, in particular PMMA with a refractive index of 1.49 and a transmittance of 92%, but also PC.
  • the mounting body only functions to stiffen the lamp, closes off the optics at the rear and offers space for electrical and/or electronic components, in particular an operating device and attachment points. It therefore no longer has to provide the function of the heat sink for cooling the LEDs and can in this respect be designed in a much more filigree manner, in particular taking a back seat in terms of design.
  • additional heat sinks can also be completely dispensed with.
  • a centering element can be provided between the optics and the LED module. Due to the combination of the floating mounting of the components and the centering element, the LED module can thus move independently of the optics and also of the optical lenses in the event of thermal expansion in relation to the centering point. This centering element thus causes the two components to be fixed in position in relation to one another.
  • the centering element is preferably arranged centrally between the LED module and the optics, with the result that the linear expansion that occurs when it is heated is halved.
  • the centering comprises a mandrel (pin) or snap hook on a component which, in the installed position, engages in the complementarily formed joining partner or the counter-element in an operatively connecting manner.
  • the inventive design also enables the production and use of long optics for the first time, which significantly reduces the assembly work, especially for linear lights and light strips, because fewer components have to be assembled and screwed, which can be problematic especially for overhead assembly.
  • the lamp and in particular the optics with the integrated LED module(s) are sealed by means of seals in order to achieve high degrees of protection.
  • this takes place through a preferably circumferential sealing channel between the optics and the LED module for receiving a seal, e.g. comprising a sealing cord or a sealing foam. But full-surface bonding is also possible.
  • the wiring of the LED circuit boards is preferably carried out from the rear by means of connecting terminals applied on the rear.
  • the circuit boards of the LED module preferably include a glass fiber reinforced carrier material, in particular FR4, CEM3.
  • the lamp body is preferably made of heat-conducting plastic in order to be able to better dissipate the heat that occurs, but it can also be made of metal.
  • the core of the invention thus lies in the fact that the LED circuit board of the LED module is no longer mounted on the mounting body, but on the optics, which is preferably done by means of retaining pins or other retaining elements.
  • the position of the lenses of the optics in relation to the LEDs no longer changes, so that the optics are always highly efficient, self-regulating, even when heated.
  • the invention thus achieves particularly accurate imaging with simple means, ie the optically optimized positioning of each individual lens in relation to the associated LED.
  • the elongated linear luminaire essentially consists of a mounting body 2 on the upper side in the figures, which defines an upper part that extends horizontally in the figures, which, with a transverse to the upper plane defined by this upper part, has a circumferential edge web that protrudes transversely downwards at the edge 2a.
  • An operating device is placed on top of the mounting body 2 , which, however, can also be integrated into the mounting body 2 in an alternative embodiment.
  • a one-piece and transparent optic 6 is arranged that is complementary to the geometry and to the structure of the mounting body 2 in the present embodiments has the same length as the mounting body and in this respect also at the edge an edge web running transversely upwards to the optical plane 6a, so that in the installed position the edge webs 2a, 6a butt against one another without transition and thus form a closed, elongated box-shaped lamp body.
  • optical lenses 6b Integrated into the optics, i.e. formed in one piece with it, are optical lenses 6b arranged equidistantly from one another in the longitudinal direction, which are essentially parabolic in cross section and whose vertices are each optically optimized and arranged exactly below the optical axis of the corresponding LEDs 8a on two LED modules 8 are.
  • Two rod-shaped centering elements 10 are arranged approximately in the middle between the LED module 8 and the optics 6 , which fix the position of the optical lenses 6b precisely relative to the optical axes of the LEDs 8a of the two LED modules 8 .
  • Electrical connecting elements 12 are arranged on the upper end faces of the oblong rectangular LED modules 8 and are designed to connect the LED module to the operating device 4 and/or an LED module 8 to an adjacent LED module.
  • the figure 2 shows a schematic longitudinal section of a basically similarly designed linear luminaire, in which a total of four of the elongate LED modules 8 are accommodated collinearly with one another in the optics 14 so as to be longitudinally displaceable in order to achieve a length of, for example, 2400 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
EP16154987.8A 2015-02-11 2016-02-10 Langgestreckte optik für led-module Active EP3056805B2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015101947.7A DE102015101947A1 (de) 2015-02-11 2015-02-11 Langgestreckte Optik für LED-Module

Publications (3)

Publication Number Publication Date
EP3056805A1 EP3056805A1 (de) 2016-08-17
EP3056805B1 EP3056805B1 (de) 2018-08-22
EP3056805B2 true EP3056805B2 (de) 2022-01-12

Family

ID=55527731

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16154987.8A Active EP3056805B2 (de) 2015-02-11 2016-02-10 Langgestreckte optik für led-module

Country Status (3)

Country Link
EP (1) EP3056805B2 (es)
DE (1) DE102015101947A1 (es)
ES (1) ES2699194T3 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017110428A1 (de) * 2017-05-12 2018-11-15 Occhio GmbH Innen- oder Außenleuchte mit einer blendarmen Lichtaustrittsfläche
DE102017124847A1 (de) * 2017-10-24 2019-04-25 Trilux Gmbh & Co. Kg Langfeldleuchte, insbesondere Lichtbandleuchte, und daraus aufgebautes Lichtband
DE102018119656A1 (de) 2018-04-19 2019-10-24 Dieter Obenaus Mechanischer und elektrischer Aufbau einer Langfeldleuchte und dazugehörige unterschiedliche Betriebsweisen
EP4305341A1 (en) * 2021-03-11 2024-01-17 Signify Holding B.V. Illumination device, optical element and luminaire

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006017595A2 (en) † 2004-08-06 2006-02-16 Gelcore Llc Elongated led illumination device
WO2010095156A1 (en) † 2009-02-20 2010-08-26 Aldabra S.R.L. A lighting device provided with a light radiation propagation optical component
DE202009005961U1 (de) † 2009-04-23 2010-09-23 Ledon Lighting Jennersdorf Gmbh LED-Beleuchtung für gekühlte Verkaufsmöbel
DE202009013230U1 (de) † 2009-09-16 2011-02-03 Ledon Lighting Jennersdorf Gmbh LED-Leuchtenelement zur Beleuchtung eines Lichtkastens mit homogener Lichtverteilung
DE102010016385A1 (de) † 2010-04-09 2011-10-13 Semperlux Aktiengesellschaft - Lichttechnische Werke - Beleuchtungsanordnung mit Leuchtdioden
WO2012049137A2 (de) † 2010-10-15 2012-04-19 Tridonic Jennersdorf Gmbh Led-strahler mit reflektor
WO2012071598A2 (de) † 2010-12-03 2012-06-07 Tridonic Jennersdorf Gmbh Led-strahler mit reflektor
WO2012109683A1 (de) † 2011-02-17 2012-08-23 Tridonic Gmbh & Co Kg Vorrichtung zum verbinden und kontaktieren zumindest einer led-einheit, sowie led-einheit und leuchtsystem
DE102012213043A1 (de) † 2011-07-29 2013-01-31 Tridonic Jennersdorf Gmbh Reflektoreinheit für LEDs
DE102012212925A1 (de) † 2011-07-28 2013-01-31 Tridonic Jennersdorf Gmbh Linsenhalter für LEDs
US20130194812A1 (en) † 2012-01-26 2013-08-01 Hui-Peng TSENG Led lamp set for enhancing illumination and eliminating ghost images

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2754426C (en) * 2008-03-03 2016-07-26 Abl Ip Holding, Llc Optical system and method for managing brightness contrasts between high brightness light sources and surrounding surfaces
CN201242134Y (zh) * 2008-07-31 2009-05-20 深圳市锐拓显示技术有限公司 贴片led显示模组
KR200452202Y1 (ko) * 2008-12-09 2011-02-10 고창균 Ｌｅｄ 등 기구
US20110007516A1 (en) * 2009-07-08 2011-01-13 Hsi-Hsien Tsai Truck rear lamp
US20140168975A1 (en) * 2012-12-14 2014-06-19 Avago Technologies General Ip (Singapore) Pte. Ltd Lighting fixture with flexible lens sheet
DE102013203912A1 (de) * 2013-03-07 2014-09-11 Zumtobel Lighting Gmbh LED-Leuchtmodul und Leuchte mit wenigstens einem LED-Leuchtmodul
DE102013216275B4 (de) * 2013-07-15 2015-07-02 Ridi Leuchten Gmbh Leuchte

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006017595A2 (en) † 2004-08-06 2006-02-16 Gelcore Llc Elongated led illumination device
WO2010095156A1 (en) † 2009-02-20 2010-08-26 Aldabra S.R.L. A lighting device provided with a light radiation propagation optical component
DE202009005961U1 (de) † 2009-04-23 2010-09-23 Ledon Lighting Jennersdorf Gmbh LED-Beleuchtung für gekühlte Verkaufsmöbel
DE202009013230U1 (de) † 2009-09-16 2011-02-03 Ledon Lighting Jennersdorf Gmbh LED-Leuchtenelement zur Beleuchtung eines Lichtkastens mit homogener Lichtverteilung
DE102010016385A1 (de) † 2010-04-09 2011-10-13 Semperlux Aktiengesellschaft - Lichttechnische Werke - Beleuchtungsanordnung mit Leuchtdioden
WO2012049137A2 (de) † 2010-10-15 2012-04-19 Tridonic Jennersdorf Gmbh Led-strahler mit reflektor
WO2012071598A2 (de) † 2010-12-03 2012-06-07 Tridonic Jennersdorf Gmbh Led-strahler mit reflektor
WO2012109683A1 (de) † 2011-02-17 2012-08-23 Tridonic Gmbh & Co Kg Vorrichtung zum verbinden und kontaktieren zumindest einer led-einheit, sowie led-einheit und leuchtsystem
DE102012212925A1 (de) † 2011-07-28 2013-01-31 Tridonic Jennersdorf Gmbh Linsenhalter für LEDs
DE102012213043A1 (de) † 2011-07-29 2013-01-31 Tridonic Jennersdorf Gmbh Reflektoreinheit für LEDs
US20130194812A1 (en) † 2012-01-26 2013-08-01 Hui-Peng TSENG Led lamp set for enhancing illumination and eliminating ghost images

Also Published As

Publication number Publication date
ES2699194T3 (es) 2019-02-07
EP3056805B1 (de) 2018-08-22
DE102015101947A1 (de) 2016-08-11
EP3056805A1 (de) 2016-08-17

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