EP3056805B2 - Elongated optic for led module - Google Patents

Elongated optic for 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
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EP
European Patent Office
Prior art keywords
optics
led
led module
optical system
leds
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EP16154987.8A
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German (de)
French (fr)
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EP3056805B1 (en
EP3056805A1 (en
Inventor
Björn Keßler
Thomas Goeke
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Trilux GmbH and Co KG
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Trilux GmbH and Co KG
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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.

Description

Die Erfindung betrifft allgemein eine Leuchte, insbesondere Langfeldleuchte, umfassend eine mit einem Montagekörper verbindbare Optik umfassend mehrere Einzeloptiken und mehrere LED-Module, die jeweils LEDs umfassen, wobei die Einzeloptiken in Einbaulage optisch optimiert im Verhältnis zu den LEDs der LED-Module angeordnet sind, um eine gewünschte Lichtverteilungskurve für eine Sehaufgabe zu realisieren. Im Besonderen betrifft die Erfindung somit eine lange Leuchte mit langen LED-Modulen und langen optischen Systemen.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. In particular, the invention thus relates to a long lamp with long LED modules and long optical systems.

Lang im Sinne dieser Erfindung ist eine Leuchte, die länger als 560 bis 600 mm ist; die Breite ist üblicherweise deutlich geringer mit 150 bis 200 mm. Einzeloptiken sind mehrere in der Optik vorgesehene Optiken, welche in Einbaulage den einzelnen LEDs zugeordnet sind und mit diesen, also vorzugsweise angeordnet in der optischen Achse der LED, eine lichttechnisch hocheffiziente Lichtverteilungskurve zur Realisierung der jeweiligen Sehaufgabe verwirklichen. Vorzugsweise sind die Einzeloptiken als Kollimatorlinsen in der Optik ausgebildet.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.

Stand der TechnikState of the art

Bei bisherigen Leuchten werden LED-Module an einem Montagekörper fixiert, welcher auch zur thermischen Kühlung dient, also als Kühlkörper. Die meist unterschiedliche Längenausdehnung des optischen Systems, des LED-Moduls, üblicherweise bestehend aus einem ersten Kunststoff mit einem ersten Wärmeausdehnungskoeffizienten und dem Montagekörper, üblicherweise bestehend aus Metall oder einem anderen Kunststoff, jedenfalls aber mit einem von dem ersten Wärmeausdehnungskoeffizienten abweichenden Wärmeausdehnungskoeffizienten, möglichst genau abzustimmen, damit auch im Betrieb durch die Erwärmung lichttechnisch hocheffiziente Leuchten bereitgestellt werden. Dies sind Leuchten, welche eine für die jeweilige Seh- bzw. Arbeitsaufgabe gewünschte Lichtverteilungskurve (LVK) ohne durch Erwärmung bedingte Lateralverschiebung der Achsen der Leuchtmittel, insbesondere einzelner LEDs, zu dem zugehörigen optischen System, vorzugsweise Einzellinsen, besonders bevorzugt Kollimatorlinsen, auftreten. Die Linsen bzw. das optische System sollen also an genau der gewünschten Position in Bezug auf das Leuchtmittel, insbesondere die einzelnen LEDs eines LED Rasters positioniert sein, und zwar unabhängig von unterschiedlichen Materialpaarungen der eingesetzten Werkstoffe für das optische System und den Montagekörper.In previous lights, LED modules are fixed to a mounting body, which is also used for thermal cooling, i.e. as a heat sink. The mostly different linear expansion of the optical system, the LED module, usually consisting of a first plastic with a first coefficient of thermal expansion, and 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. These are lights that have a light distribution curve (LVK) desired for the respective visual or work task without lateral displacement of the axes of the light sources, in particular individual LEDs, to the associated optical system, preferably individual lenses, particularly preferably collimator lenses, caused by heating. 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.

Angepasst an die derzeitige maximale Länge von LED-Modulen bestehen Optiken mit Einzellinsen in einer Länge von maximal ca. 600 mm, bei der sich durch eine geeignete, mittige Positionierung eine Ausdehnung von üblicherweise max. 1mm der Kunststoff-Optik zur LED-Platine noch relativ gut kompensieren lässt.Adapted to the current maximum length of LED modules, there are 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.

Längere Optiken sind wünschenswert, insbesondere um Kosten für die Montage und Herstellung von Langfeldleuchten, Lichtbändern und dergleichen zu reduzieren, z.B. mittels Extrudieren. Bei längeren Optiken besteht jedoch das Problem einer ungenauen Positionierung des optischen Systems mit mehreren zueinander beabstandeten Einzellinsen zu der optischen Achse der zugehörigen LEDs auf einer LED-Platine bei Erwärmung. Wärme bewirkt eine Ausdehnung, insbesondere eine Längenausdehnung der Optik und somit eine Verschiebung der Linsen aus den mit den optischen Achsen der einzelnen LEDs zusammenfallenden Sollpositionen, so dass die Lichtverteilungskurven nicht mehr hocheffizient sind und insofern negativ beeinflusst werden. Daneben wird die insbesondere für Arbeitsplätze relevante Entblendung zur Vermeidung zu hoher Leuchtdichten oberhalb eines Blickwinkels von 65 Grad im Verhältnis zur Horizontalen negativ beeinflusst, welche einen direkten Einblick auf einzelne Leuchtmittel vermeiden soll.Longer optics are desirable, particularly to reduce costs associated with the assembly and manufacture of linear lights, strip lights and the like, e.g., by extrusion. With longer optics, however, there is the problem of imprecise positioning of the optical system with a plurality of individual lenses spaced apart from one another in relation to the optical axis of the associated LEDs on an LED circuit board when it is heated. Heat causes an expansion, in particular a longitudinal expansion of the optics and thus a displacement of the lenses from the desired positions that coincide with the optical axes of the individual LEDs, so that the light distribution curves are no longer highly efficient and are therefore negatively influenced. In addition, the glare control, which is particularly relevant for workplaces to avoid excessive luminance above a viewing angle of 65 degrees in relation to the horizontal, is negatively influenced, which is intended to prevent a direct view of individual lamps.

Um längere Optiken mit einzelnen Linsen, in der Regel bis zu einer Länge von ca. 1500mm mit einfachen Mitteln realisieren zu können, muss eine geeignete Möglichkeit vorgesehen werden, die Längenausdehnung von Kunststoffoptiken im Verhältnis zu denen der LEDs zu minimieren bzw. an diese anzupassen.In order to be able to implement longer optics with individual lenses, usually up to a length of approx. 1500mm with simple means, a suitable possibility must be provided to minimize the linear expansion of plastic optics in relation to those of the LEDs or to adapt them to them.

DE 10 2010 016 385 A1 beschreibt eine Beleuchtungsanordnung mit einem Kühlkörper, wenigstens einer auf dem Kühlkörper montierten Leuchtdiode und einer vor der Leuchtdioden montierten entblendenden Beleuchtungsoptik, wobei die Beleuchtungsoptik einen gerillten, lichtdurchlässigen, kegelstumpfförmigen oder im Querschnitt im Wesentlichen trapezförmigen Entblendungskörper umfasst, wobei die Stirnseite des Einblendungskörpers mit geringerem Durchmesser eine Aussparung aufweist und wobei der Entblendungskörper mit der Aussparung derart vor der Leuchte angeordnet ist, dass diese außeraxial zur Kegelstumpfachse des Entblendungskörper angeordnet ist. Dabei können auch mehrere Entblendungskörper linear zu einer Optik integriert und vor den zugehörigen, auf dem Kühlkörper montierten Leuchtdioden, angebracht sein. Eine gewisse Verschiebung der Optik gegenüber der Platine durch unterschiedliche thermische Ausdehnung wird dabei in Kauf genommen. 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. In this case, 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.

Ähnliche Leuchten sind ferner aus der US 2011/007516 A1 , CN 201 242 134 Y , US 2014/168975 A1 sowie der DE 10 2013 203912 A1 bekannt. Ein Leuchte anderer Art ist aus der EP 2 827 053 A1 bekannt.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.

Technisches Problem (Aufgabe)Technical problem (task)

Ausgehend von diesem Stand der Technik befasst sich die Erfindung mit dem technischen Problem, diese Nachteile zumindest teilweise zu vermeiden und insbesondere eine genaue Positionierung von den einzelnen LEDs eines LED-Moduls zu den einzelnen optischen Linsen auch bei langen Leuchten jederzeit zu gewährleisten.Based on this prior art, 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.

Die Erfindung befasst sich demnach mit dem Problem, die meist unterschiedlichen Längenausdehnungen von optischen Systemen, LED-Modulen und Montagekörpern so aufeinander abzustimmen, dass die Effizienz der Leuchten bei Erwärmung nicht negativ beeinflusst wird. Durch die Erfindung sollen also lange, lichttechnisch hocheffiziente Leuchten zur Realisierung der für die Sehaufgabe geforderten Lichtverteilungskurven bei gleichzeitiger Entblendung bereitgestellt werden.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.

Erfindunginvention

Erfindungsgemäß wird diese Aufgabe bei einer Langfeldleuchte oder einem Lichtbandsystem im Wesentlichen bereits dadurch gelöst, dass mehrere LED-Module von der Optik aufgenommen und mit ihr ohne direkte Verbindung mit dem Leuchtengehäuse bzw. dem Montagekörper verbunden sind. Ferner weist die Optik ein Mehrfaches der Länge eines LED-Moduls auf. Damit wird eine "schwimmende" Lagerung der LED-Module an dem ansonsten starren Montagekörper zur Kompensierung bei der Wärmeausdehnung im Betrieb erzielt. Die Erfindung geht insofern einen gänzlich neuen Weg, weil sie das LED-Modul nunmehr der Optik zuordnet und nicht mehr dem Montageköper bzw. dem Leuchtengehäuse. Dabei umfasst jedes der LED-Module eine plattenförmigen Kunststoffträger mit aufgebrachter Kupferschicht.According to the invention, 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.

Erfindungsgemäß ist die LED-Platine des LED-Moduls, also das plattenförmige Trägerelement mit den an den Anwendungsfall angepasst auf dieser aufgebrachten LEDs, welche sich kollinear entlang einer gemeinsamen Längsachse erstrecken, nicht mehr einem starren Gehäuse oder Kühlkörper zugeordnet, sondern der Optik. Die Verbindung wird erfindungsgemäß also zwischen Optik und LED realisiert. Durch die erfindungsgemäß schwimmende Lagerung wird gewährleistet, dass die LEDs der LED-Module jederzeit im Verhältnis zur Optik zentriert sind. Wenn sich die Optik bei Erwärmung ausdehnt, bewegt sich das LED-Modul mit und die Zentrierung der LEDs zu der jeweiligen Linse ist weiterhin gewährleistet.According to the invention, 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, is no longer assigned to a rigid housing or heat sink, but to the optics. According to the invention, 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.

Erfindungsgemäß ist die Optik ausgebildet zur Aufnahme der LED-Module bzw. zur Verbindung mit diesen. Dieses kann beispielsweise durch Vorsehen von Aufnahmen bzw. Aufnahmeschlitzen an der Optik erfolgen, die sich in Einbaulage in Längserstreckungsrichtung der Leuchte erstrecken und in welche die Längsseiten der LED-Platine des LED-Moduls so einschiebbar oder einschnappbar sind, dass sich die Optik in Einbaulage in Strahlungsrichtung also in Richtung der optischen Achse der einzelnen LEDs brückenartig über diese LEDs erstreckt, und zwar dergestalt, dass jederzeit die höchste optische Effizienz erzielt werden kann.According to the invention, 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.

Bei der fertigungstechnisch bevorzugten Ausführungsform ist die Optik als einstückiges Spritzguss- oder Extrusionsspritzgussteil ausgebildet.In the embodiment that is preferred in terms of manufacturing technology, the optics are designed as a one-piece injection molded or extrusion injection molded part.

Die optische Effizienz, insbesondere der Reflexionsgrad, kann weiter verbessert werden, indem die Materialien der Optik und der LED-Module denselben oder einen sehr ähnlichen Wärmeausdehnungskoeffizienten aufweisen.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.

Erfindungsgemäß weist die Optik ein Mehrfaches der Länge der LED-Module auf, insbesondere das 3-fache, so dass also 3 LED-Module in Längserstreckungsrichtung kollinear zueinander und hintereinander in der Optik angeordnet sind.According to the invention, 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.

Bei der Entwicklung der Erfindung hat sich nämlich gezeigt, dass viele heute am Markt vorhandenen LED-Module die Kühlleistung des LED-Moduls mit der auf dem plattenförmigen Kunststoffträger aufgebrachten Kupferschicht eine ausreichende Eigenkühlleistung bereitstellen, dass keine weiteren Kühlkörper benötigt werden, insbesondere keine direkte Verbindung der LED-Platine mit dem Montagekörper notwendig ist. Dieses ist insbesondere bei Mid-power LED-Modulen mit Lichtströmen von 1000 bis 2000 lm (Lumen) möglich, wobei die einzelnen LEDs Lichtströme von 30 - 50 lm realisieren. Durch Zusammenfassen mehrerer dieser LED Module in der erfindungsgemäßen Anordnung lassen sich damit Standardleuchten mit an die jeweilige Sehaufgabe individuell anpassbaren Lichtströmen von 4000 bis 6000 Lumen, insbesondere für den Arbeitsplatzbereich realisieren.During the development of the invention, it has been shown that many LED modules currently available on the market provide the cooling capacity of the LED module with the copper layer applied to the plate-shaped plastic carrier with sufficient self-cooling capacity that no additional heat sinks are required, in particular no direct connection of the LED circuit board with the mounting body is necessary. This is particularly possible with mid-power LED modules with luminous fluxes of 1000 to 2000 lm (lumen), with the individual LEDs realizing luminous fluxes of 30 - 50 lm. By combining several of these LED modules in the arrangement according to the invention, standard lights with luminous fluxes of 4000 to 6000 lumens that can be individually adapted to the respective visual task can be implemented, in particular for the workplace area.

Derartige Leuchten sind z.B. in Büros, in Fluren, z.B. eingebaut in Lichtkanäle, aber auch im Shop- oder im Retail-Bereich und sogar als Lichtbänder in Produktions- oder Werkshallen verwendbar.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.

Das LED-Modul wird bevorzugt mit einer langen Optik verbunden bzw. in dieser fixiert. Die Optik wird vorzugsweise in einem Extrusions-Spritzguss-Verfahren hergestellt und die Platine des LED-Moduls durch z.B. durch Laminierung von vorzugsweise glasfaserverstärkten Kunstoffen, die besonders bevorzugt mit alternierender Faserrichtung unter Einbindung der Leiterbahnen und evtl. weiterer elektronischer Komponenten aufeinander laminiert werden zur Bildung des endgültigen Moduls bzw. dessen "Substrats", auf dem die LEDs befestigbar sind.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.

Um eine genaue Positionierung der Optik im Verhältnis zu den einzelnen LEDs der LED-Module unter allen Betriebsbedingungen zu gewährleisten, ist vorzugsweise zwischen der Optik und dem LED-Modul mindestens ein Zentriermittel ausgebildet zur Verbindung des LED-Moduls mit der Optik vorgesehen, z.B. in Form eines Schnapphakens oder eines Zentrierstifts. Wenn sich die Optik aufgrund von thermischer Einwirkung im Betrieb ausdehnt, wird das LED-Modul durch dieses Zentriermittel somit im dem gleichen Maße mitgenommen, so dass jede LED weiterhin in der optischen Sollposition genau zentriert ist gegenüber der Optik bzw. einem Optikelement, wie z.B. einer in der Optik ausgebildeten Linse.In order to ensure precise positioning of the optics in relation to the individual LEDs of the LED modules under all operating conditions, 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.

Vorzugsweise werden mehrere, z.B. ca. 560 mm lange LED-Module gemäß Zhaga-Standard in doppelt, dreimal oder sogar viermal so lange Optiken eingesetzt bzw. in diesen aufgenommen.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.

Bei der bevorzugten Ausführungsform ist die Optik ausgebildet zur längsverschieblichen Aufnahme der LED-Module, z. B. durch sich in Längsrichtung erstreckende Aufnahmerillen optisch optimiert beabstandet zu der die LEDs des LED-Moduls in Einbaulage domartig überspannenden Linsen.In the preferred embodiment, 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.

Bei der bevorzugten Ausführungsform weisen der Werkstoff des LED-Moduls bzw. der Trägerplatte (Substrat) des LED-Moduls und die Optik einen ähnlichen oder denselben Wärmeausdehnungskoeffizienten auf. Als bevorzugte Materialien für die Fertigung der Optik haben sich lichttechnisch hochwirksame, insbesondere glaskare Kunststoffe erwiesen, dabei insbesondere PMMA mit einem Brechungsindex von 1,49 und einem Transmissionsgrad von 92%, aber auch PC.In the preferred embodiment, 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.

Durch die erfindungsgemäße Ausbildung fungiert der Montagekörper nur noch zur Versteifung der Leuchte, schließt die Optik nach hinten hin ab und bietet Raum für elektrische und/oder elektronische Komponenten, insbesondere ein Betriebsgerät und Befestigungspunkte. Er muss somit nicht mehr die Funktion des Kühlkörpers zur Kühlung der LEDs bereitstellen und kann insofern wesentlich filigraner ausgebildet werden, insbesondere gestalterisch zurück treten. Insofern kann bei einer besonders bevorzugten Ausführungsform der Erfindung auch völlig auf zusätzliche Kühlkörper verzichtet werden.Due to the design according to the invention, 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. In this respect, in a particularly preferred embodiment of the invention, additional heat sinks can also be completely dispensed with.

Zwischen der Optik und dem LED-Modul kann ein Zentrierelement vorgesehen sein. Durch die Kombination der schwimmenden Lagerung der Bauteile und dem Zentrierelement kann sich das LED-Modul somit unabhängig von der Optik und auch zu den optischen Linsen bei thermischer Ausdehnung in Verhältnis zu dem Zentrierpunkt bewegen. Dieses Zentrierelement bewirkt somit eine Lagefixierung der beiden Bauteile im Verhältnis zueinander. Vorzugsweise ist das Zentrierelement mittig zwischen LED-Modul und Optik angeordnet, womit die auftretende Längenausdehnung bei Erwärmung halbiert wird.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.

Bei der bevorzugten Ausbildung umfasst die Zentrierung einen Dorn (Stift) oder Schnapphaken an einem Bauteil, welches in Einbaulage in wirkverbindend in den komplementär ausgebildeten Fügepartner bzw. das Gegenelement eingreift.In the preferred embodiment, 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.

Die erfindungsgemäße Ausbildung ermöglicht darüber hinaus erstmalig die Fertigung und den Einsatz von langen Optiken, was den Montageaufwand insbesondere bei Langfeldleuchten und Lichtbändern deutlich verringert, weil weniger Bauteile montiert und verschraubt werden müssen, was insbesondere bei der Überkopfmontage problematisch sein kann.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.

Bei einer bevorzugten Weiterentwicklung sind die Leuchte und insbesondere die Optik mit dem/den integrierten LED-Modul(en) mittels Dichtungen abgedichtet zur Realisierung hoher Schutzarten. Bei der bevorzugten Ausführungsform erfolgt dieses durch einen vorzugsweise umlaufenden Dichtkanal zwischen Optik und LED-Modul zur Aufnahme einer Dichtung, z.B. umfassend eine Dichtschnur oder einen Dichtschaum. Aber auch eine vollflächige Verklebung ist gut realisierbar.)In a preferred further development, 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. In the preferred embodiment, 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.)

Die Verdrahtung der LED-Platinen erfolgt vorzugsweise durch rückseitig aufgebrachte Verbindungsklemmen von der Rückseite her.The wiring of the LED circuit boards is preferably carried out from the rear by means of connecting terminals applied on the rear.

Die Platinen des LED-Moduls umfassen vorzugsweise ein glasfaserverstärktes Trägermaterial, insbesondere FR4, CEM3.The circuit boards of the LED module preferably include a glass fiber reinforced carrier material, in particular FR4, CEM3.

Der Leuchtenkörper besteht vorzugsweise aus wärmeleitendem Kunststoff, um die anfallende Erwärmung besser abführen zu können, kann aber auch aus Metall bestehen.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.

Der Kern der Erfindung liegt somit darin, die LED-Platine des LED-Moduls nicht mehr an dem Montagekörper, zu montieren, sondern an der Optik, was vorzugsweise mittels Haltestiften oder anderen Halteelementen erfolgt. Somit ändert sich auch bei längeren Optiken nicht mehr die Lage der Linsen der Optik gegenüber den LEDs, so dass die Optiken auch bei Erwärmung selbstregulierend immer hocheffizient sind. Durch die Erfindung wird somit mit einfachen Mitteln eine besonders genaue Abbildegenauigkeit erzielt, also die optisch optimierte Positionierung jeder einzelnen Linse im Verhältnis zu der zugehörenden LED.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. Thus, even with longer optics, 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.

Weitere Einzelheiten, Vorteile und Merkmale der Erfindung lassen sich dem nachfolgenden Teil der Beschreibung entnehmen, indem zwei Ausführungsbeispiele der erfindungsgemäßen Vorrichtung anhand von zwei Zeichnungen näher erläutert sind. Es zeigen:

Fig. 1
einen schematischen Längsschnitt einer ersten Ausführungsform einer erfindungsgemäßen Leuchte; und
Fig. 2
einen vergrößerten schematischen Längsschnitt einer zweiten Ausführungsform einer erfindungsgemäßen Leuchte.
Further details, advantages and features of the invention can be found in the following part of the description, in that two exemplary embodiments of the device according to the invention are explained in more detail using two drawings. Show it:
1
a schematic longitudinal section of a first embodiment of a lamp according to the invention; and
2
an enlarged schematic longitudinal section of a second embodiment of a lamp according to the invention.

Gleiche oder gleichwirkende Teile sind mit denselben Bezugszeichen versehen.Parts that are the same or have the same effect are provided with the same reference symbols.

Demnach besteht die langgestreckte Langfeldleuchte im Wesentlichen aus einem in den Figuren oberseitigen Montagekörper 2, welcher ein sich in den Figuren in der Horizontalen erstreckendes Oberteil definiert, das mit einer quer zu dem durch dieses Oberteil definierten Oberebene einen am Rand quer nach unten ragenden, umlaufenden Randsteg 2a aufweist.Accordingly, 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.

Oberseitig auf dem Montagekörper 2 ist ein Betriebsgerät aufgesetzt, welches aber auch bei einer alternativen Ausführungsform in den Montagekörper 2 integriert sein kann.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.

An dem Montagekörper 2 bzw. an dessen umlaufendem Randsteg 2a ist eine komplementär zu der Geometrie und zum Aufbau des Montagekörpers 2 ausgebildete, einteilige und lichtdurchlässige Optik 6 angeordnet, welche also eine optische Lichtaustrittsfläche zum Oberteil parallel nach unten versetzt zur Ebene des Montagekörpers 2 definiert und bei den vorliegenden Ausführungsformen die gleiche Länge wie der Montagekörper aufweist und insofern ebenfalls am Rand einen quer nach oben zur Optikebene verlaufenden Randsteg 6a aufweist, so dass die Randstege 2a, 6a in Einbaulage stoßseitig übergangslos aneinander anliegen und somit einen geschlossenen, länglich kastenförmigen Leuchtenkörper bilden.On the mounting body 2 or on its circumferential edge web 2a, 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.

Integriert in die Optik, also einteilig mit dieser ausgebildet sind in Längsrichtung äquidistant zueinander angeordnete optische Linsen 6b, welche im Querschnitt im Wesentlichen parabolisch ausgebildet sind und deren Scheitelpunkte jeweils optisch optimiert genau unterhalb der optischen Achse der korrespondierenden LEDs 8a auf zwei LED-Modulen 8 angeordnet sind.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.

Etwa mittig zwischen dem LED-Modul 8 und der Optik 6 sind zwei stabförmige Zentrierelemente 10 angeordnet, welche eine genaue Lagefixierung der optischen Linsen 6b gegenüber von den optischen Achsen der LEDs 8a der beiden LED-Module 8 realisieren.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 .

An den oberseitigen Stirnenden der länglich rechteckig ausgebildeten LED-Module 8 sind elektrische Verbindungselemente 12 angeordnet, die dazu ausgebildet sind, das LED-Modul mit dem Betriebsgerät 4 und/oder ein LED-Modul 8 mit einem benachbarten LED-Modul zu verbinden.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.

Die Figur 2 zeigt einen schematischen Längsschnitt einer grundsätzlich ähnlich ausgebildeten Langfeldleuchte, bei welcher zur Realisierung einer Länge von z.B. 2400 mm insgesamt vier der länglichen LED-Module 8 kollinear zueinander in der Optik 14 längsverschieblich aufgenommen sind.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.

Der Gegenstand der vorliegenden Erfindung ergibt sich nicht nur aus dem Gegenstand der einzelnen Patentansprüche, sondern aus der Kombination der einzelnen Patentansprüche untereinander. Alle in den Unterlagen - einschließlich der Zusammenfassung - offenbarten Angaben und Merkmale, insbesondere die in den Zeichnungen dargestellte räumliche Ausbildung werden als erfindungswesentlich beansprucht, soweit sie einzeln oder in Kombination gegenüber dem Stand der Technik neu sind.The subject matter of the present invention results not only from the subject matter of the individual patent claims, but from the combination of the individual patent claims with one another. All information and features disclosed in the documents - including the summary - in particular the spatial configuration shown in the drawings are claimed to be essential to the invention insofar as they are new compared to the prior art, individually or in combination.

BezugszeichenlisteReference List

22
Montagekörperassembly body
2a2a
Randstegedge bar
44
Betriebsgerätcontrol gear
66
Optikoptics
6a6a
Randstegedge bar
6b6b
Linselens
88th
LED-ModulLED module
8a8a
LEDLEDs
1010
Zentrierelementcentering element
1212
Verbindungselementfastener
1414
Optikoptics

Claims (4)

  1. Strip light, comprising several LED-modules each comprising LEDs, and comprising an optical system (6) connectable to a mounting body (2) and comprising several individual optical systems which, in the installed position, are arranged in an optically optimized manner with respect to the LEDs (8a) of the LED modules (8) to realize a desired light distribution curve for a vision task, wherein each LED module comprises a plate-like plastic carrier with deposited copper layer, characterized in that several LED modules are housed by the optical system (6) and are connected to the optical system without a direct connection to the mounting body and that the optical system (6) is several times longer than the length of an LED module (8).
  2. Light according to claim 1 or 2, characterized in that the optical system is designed for housing the LED modules (8) in a longitudinally displaceable manner.
  3. Light according to claim 3, characterized in that between the optical system and at least one of the LED modules (8) at least one centering element is provided.
  4. Light according to claim 4, characterized in that the centering element comprises a latching means or a connecting pin.
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EP3056805B1 (en) 2018-08-22
DE102015101947A1 (en) 2016-08-11
EP3056805A1 (en) 2016-08-17

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