EP3577391B1 - Système de montage sans outil d'un module à led dans un luminaire présentant un indice de protection élevé - Google Patents

Système de montage sans outil d'un module à led dans un luminaire présentant un indice de protection élevé Download PDF

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Publication number
EP3577391B1
EP3577391B1 EP18705325.1A EP18705325A EP3577391B1 EP 3577391 B1 EP3577391 B1 EP 3577391B1 EP 18705325 A EP18705325 A EP 18705325A EP 3577391 B1 EP3577391 B1 EP 3577391B1
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EP
European Patent Office
Prior art keywords
led assembly
luminaire
housing
support element
luminaire housing
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
EP18705325.1A
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German (de)
English (en)
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EP3577391A1 (fr
Inventor
Manfred DÖRING
Jochen Holzbauer
Martin Kronast
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.)
Siteco GmbH
Original Assignee
Siteco GmbH
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
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Publication of EP3577391A1 publication Critical patent/EP3577391A1/fr
Application granted granted Critical
Publication of EP3577391B1 publication Critical patent/EP3577391B1/fr
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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
    • F21V19/004—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources by deformation of parts or snap action mountings, e.g. using clips
    • 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
    • F21V19/0035—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources the fastening means being capable of simultaneously attaching of an other part, e.g. a housing portion or an optical component
    • 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
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/005—Sealing arrangements therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a lamp in which an LED assembly is mounted, and more particularly to the mounting system of the LED assembly in the lamp housing.
  • LEDs light emitting diodes
  • the LEDs are usually placed on a circuit board that is in the best possible thermal contact with components in the luminaire, e.g. heat sinks or a solid metal housing, in order to dissipate the heat.
  • components in the luminaire e.g. heat sinks or a solid metal housing
  • the DE 20 2015 100 151 U1 discloses a lighting device according to the preamble of claim 1. Further constructions of lighting units with in a housing component held LED light units are in the DE 10 2010 023 497 A1 and the DE 20 2011 051 094 U1 described. In these publications, the holding elements for the LED light units are short compared to the overall extent of the LED light units.
  • the object of the present invention is to provide a light with an LED assembly in which the LED assembly can be mounted without tools and which is optimized with regard to the thermal properties of the LED assembly.
  • a special feature of the present invention is the support element, which spans the LED assembly with a web and holds the LED assembly in the housing with several spring elements.
  • the spring elements directly or indirectly press the LED assembly against the housing, so that there is a uniform contact pressure over the rear surface of the LED assembly against the housing. In this way a good thermal contact is achieved.
  • the springs ensure a uniform force over the entire LED assembly, since several spring elements hold the LED assembly in the housing. In spite of this, the LED assembly can be installed very easily, since all spring elements are arranged on a common web of the support element and this only needs to be attached to the housing at two support points. Assembly is therefore simpler compared to a large number of fasteners.
  • the torques of the screws customary in the prior art do not need to be observed and assembly can be carried out without tools because the contact pressure is only given by the properties of the spring elements.
  • larger construction tolerances are acceptable if only spring elements act on the LED assembly.
  • the exact placement of the spring elements in relation to the LED assembly is not critical compared to a screw connection, in which the holes have to be exactly aligned.
  • Another advantage is that there is no rigid connection between the LED assembly and the housing. If the LED assembly has a different coefficient of thermal expansion than the housing, the components can expand differently. With a rigid connection this can lead to tension and material damage. When fastening the LED assembly by only the spring elements, on the other hand, the LED assembly can expand differently with respect to the housing without material damage occurring. Furthermore, a constant contact pressure is maintained even if the materials of the LED assembly or the housing change in volume due to aging, as is often the case with plastics in particular.
  • the LED assembly lies flat on the luminaire housing on the side opposite the support element.
  • the thermal contact is further improved by the flat contact.
  • means for improving the heat transfer e.g. a thermally conductive film or a thermally conductive paste, can be introduced in order to further improve the thermal contact between the housing, which acts as a heat sink, and the LED assembly.
  • the support points are provided at opposite ends of the web.
  • the support element can be supported on housing parts outside the LED assembly and nevertheless span the entire LED assembly. Because of the support points at the ends of the web, it is not necessary for a contact to be made with the housing within the LED assembly to fix the support element. In contrast, conventional fastening means such as screws must also be provided at a large number of locations through holes within the LED assembly.
  • one of the support points is formed by an elastic latching element.
  • the elastic latching element has a run-on bevel and an edge that is set back from the run-on bevel, so that the latching element when the support element is inserted into the luminaire housing is deflected in a resilient manner by a force acting on the run-up bevel until it springs back via a recess in the housing, so that the edge of the latching element hooks onto the recess in the luminaire housing.
  • a latching connection is particularly suitable as a support point, since it can be actuated without tools.
  • provision can also be made for the latching element to be accessible without tools in the assembled state in order to detach it again from the lamp housing.
  • the lamp housing there can be an opening in the lamp housing into which the latching element engages in a resilient manner.
  • the opening can be accessible from the outside, so that the latching element can be pushed back by hand against the resilient effect in order to dismantle the support element again.
  • one of the support points is formed by a hook which is suspended from the lamp housing, and the support element can be pivoted into the lamp housing with the hook suspended.
  • This support point is preferably provided at an end of the web opposite the second support point with the locking element. To assemble the support element, it is hung with the hook on one side, swiveled over the LED component and latched onto the housing on the opposite side with the latching element. As a result, the support element can be attached to the luminaire housing in a simple manner without tools. This assembly is easy to carry out even at the installation site of the luminaire.
  • the plurality of spring elements have at least three spring elements which each act with an elastic force directly or indirectly on the LED assembly. Three or more spring elements are preferred because they distribute the force to hold the LED assembly evenly across the assembly.
  • the several spring elements are designed with a higher spring constant towards the center of the web, in particular are provided with longer and / or more rigid spring legs than the spring elements located at the ends of the web. This compensates for the effect of the web flexing in order to enable the LED assembly to be pressed evenly into the housing. In the middle area of the bar, when it is supported at the two opposite ends, it will bend slightly so that the distance to the LED assembly increases. Due to the further formed spring elements, e.g. longer spring legs or spring legs with a higher bending force, despite the greater distance to the LED group due to the deflection of the web, the same contact pressure is achieved as on the edges of the web, on which the spring elements are closer to the LED Assembly.
  • the LED assembly has a cover, for example a photometric cover, which encapsulates the LEDs in the LED assembly so that it is impervious to moisture and dust.
  • the LED assembly is plugged into the luminaire housing with a self-retaining seal.
  • a circumferential seal can be inserted along a groove in the cover, which seal is inserted into a circumferential groove in the luminaire housing on the side opposite the LED assembly. This allows the LED assembly to be mounted on the housing in a moisture-proof and dust-proof manner.
  • the seal has another advantage because it also helps support the LED assembly in the housing. As a result, the spring force which the spring elements of the support element exert on the LED assembly can be made smaller.
  • the LED assembly is jointly protected against falling down by the seal and the support element in the housing.
  • the seal in a cross section perpendicular to its longitudinal extension on lateral lamellas, which are arranged at an obtuse angle with respect to an insertion direction of the seal into a groove of the lamp housing and / or a groove of the LED assembly in order to move away from the insertion direction from the groove in the lamp housing and / or oppose LED assembly.
  • the lamellas not only improve the tightness, but also act like a barb. As a result, the seal can accommodate a higher load-bearing capacity for the LED assembly.
  • the support element is guided centrally over the LED assembly and the spring elements are preferably arranged at positions which, in terms of lighting technology, are of no significance for the emission of the LED assembly.
  • the arrangement of the support element in the middle of the LED assembly has the advantage that the LED assembly can be held on the luminaire housing evenly over the entire length.
  • the web of the support element can be made narrow and the spring elements can only be attached at positions where the LED assembly does not emit light, e.g. between reflectors or lenses that are assigned to the LEDs.
  • the support element does not have a negative effect on the light emission of the luminaire, although the support element nevertheless grips over the LED assembly in order to press the LED assembly evenly against the luminaire housing.
  • the support element is set up to accommodate further components apart from the LED assembly on the side facing away from the LED assembly.
  • the further components can comprise an optical attachment (lenses or reflectors) and / or lamellae and / or a grid for protection against mechanical effects.
  • the other components can be used to mechanically protect the luminaire, for example against vandalism.
  • the additional Components can also perform technical lighting functions, for example to influence the light distribution for a particular lighting task or to improve the glare control of the luminaire.
  • the other components can be attached directly to the support element, for example by means of a plug connection. As a result, the components are arranged directly in front of the LED assembly, ie in the area of the light outlet opening of the lamp.
  • the springs can be supported on the stable housing via the LED assembly, higher external forces can also be transmitted via the springs. As a result, it is easily possible to mount a grid on the luminaire as vandal protection in this way.
  • the position of the support element with respect to the LED assembly is defined so that the lighting elements can be aligned with the positions of the LEDs or the surfaces radiating from the LED assembly.
  • the lamp according to the embodiment shown can in particular be designed as an outdoor lamp.
  • a solid housing 2 forms a downwardly open receiving space for an LED assembly 4.
  • the LED assembly 4 comprises a plurality of LEDs, each of which is assigned a reflector in the assembly.
  • the LED assembly 4 is inserted into the opening of the lamp housing 2.
  • a support element 6, which is shown as a single component in Figure 2 is hung with a hook at one end of a continuous web in the housing and pivoted into the housing, so that the support element 6 with a continuous web 10 engages over the LED assembly 4.
  • a latching element 12 is provided at the end of the web 10 opposite the hook 8.
  • the latching element 12 has a run-on bevel which deflects the latching element 12 elastically inward when it strikes a housing edge and is pressed further in the direction of the housing 2.
  • the latching element 12 springs back with one edge over a recess in the housing 2 and hooks in this way in the housing 2.
  • an opening 16 is formed on the front side of the housing, which allows access to the latching element 12 directly from the outside.
  • the latching element 12 can also be released again from the outside and the support element 6 can be dismantled in the reverse order.
  • the support element 6 has several spring elements 14 along the web 10, which extend in the direction of the LED assembly 4. Each of the spring elements 14 engages, as in FIG Figure 3 shown, at a defined point of the LED assembly 4 and thereby presses the LED assembly against the housing 2.
  • the LED assembly 4 is thereby mechanically held in the housing 2 without a rigid connection between the housing 2 and the LED Assembly 4 is necessary. This has the advantage that the LED assembly can expand thermally independently of the housing or can change due to material aging without mechanical stresses occurring in the LED assembly.
  • the housing 2 is preferably formed from a material with good thermal conductivity, for example aluminum. In contrast, the LED assembly 4 is predominantly made of plastic. Because of the different expansion coefficients, stresses would arise when the LED assembly 4 is screwed to the housing 2. Since the LED assembly 4 is only held by the spring elements 14, however, it can move along the contact surface on the housing 2 for thermal expansion.
  • This effect can be compensated for in that the spring elements 14 are designed with higher spring constants toward the center of the web, for example with longer spring legs or with a stronger bending stress.
  • the spring elements 14 in the central area of the web would achieve a higher contact pressure with the same distance from the LED assembly 4.
  • the effects are offset against each other so that a uniform elastic force is exerted on the LED assembly 4 by each spring element along the web.
  • a seal 18 is also shown, which is introduced between the LED assembly 4 and the lamp housing 2.
  • the seal 18 engages in a circumferential groove on the side of the housing 2 and in an opposite circumferential groove on the side of the LED module 4, which groove is formed on a transparent cover 5 of the LED module 4.
  • the seal 18 also has a plurality of lamellae which, in the manner of a barb, have an obtuse angle with respect to the direction of insertion into the respective groove. As a result, the lamellae get caught and resist pulling off the seal 18 against the insertion directions.
  • the seal 18 has two functions. On the one hand, it seals the LED assembly 4 along the circumference of the cover 5 from the housing 2.
  • the LED assembly 4 is already held in the housing 2 by the seal 18 alone .
  • the support element 6 serves only as a further mechanical fastening of the LED assembly 4, which forces only need to apply in addition to the mechanical hold that is already provided by the seal 18.
  • the spring elements 14 act at locations on the LED assembly at which massive support points are present. This protects the optically sensitive parts of the LED assembly 4 from damage.
  • the luminaire has the same elements as described above.
  • a grille 20 is arranged in the area of the light exit surface of the lamp.
  • the grid 20 is fixed to the support element 6 by fastening elements 12.
  • the spring elements 14 of the support element can absorb loads which act on the grid 20 from the outside.
  • other light-conducting elements instead of or in addition to the grating 20.
  • an optical attachment with light-refracting or light-reflecting means can be attached to the support element 6.
  • the further component is fastened with fastening elements 22 in the form of plug connections in recesses of the support element 6 on the side facing away from the LED assembly.
  • the support element 6, as described above, can simultaneously take on other functions. Since the support element 6 is in any case preferably formed from metal, it can take on the task of an antenna. In this embodiment, the support element is connected to a control element in the housing 2 or the LED assembly 4. The antenna allows control signals to be received and transmitted to the control device in the luminaire.
  • more than just one support element can be provided for larger LED assemblies.
  • two or three support elements can be arranged in parallel.
  • Support elements can also be provided crosswise. It is also possible for the lamp to have several separate LED assemblies, each of which is held by a support element or by a plurality of support elements.

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  • 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)

Claims (14)

  1. Luminaire avec un boîtier de luminaire (2), dans lequel est monté un sous-ensemble à LED (4),
    dans lequel le sous-ensemble à LED (4) est maintenu au moyen d'un élément d'appui (6) dans le boîtier de luminaire (2),
    dans lequel l'élément d'appui (6) recouvre le sous-ensemble à LED (4) et s'appuie contre le boîtier de luminaire (2),
    et l'élément d'appui (6) comprend, sur un côté orienté vers le sous-ensemble à LED (4), plusieurs éléments de ressorts (14) qui exercent une force élastique agissant directement ou indirectement sur le sous-ensemble à LED (4), afin de maintenir celui-ci dans le boîtier de luminaire (2), caractérisé en ce que l'élément d'appui (6) recouvre le sous-ensemble à LED (4) avec une nervure (10) et s'appuie avec au moins deux points d'appui contre le boîtier de luminaire (2), dans lequel les plusieurs éléments de ressorts (14) sont disposés sur la nervure (10) de l'élément d'appui (6), sur le côté orienté vers le sous-ensemble à LED (4).
  2. Luminaire selon la revendication 1, dans lequel le sous-ensemble à LED (4) s'appuie sur toute sa surface contre le boîtier de luminaire (2) sur le côté opposé à l'élément d'appui (6).
  3. Luminaire selon l'une des revendications précédentes, dans lequel les deux points d'appui sont disposés à des extrémités opposées de la nervure (10).
  4. Luminaire selon l'une des revendications précédentes, dans lequel un des points d'appui est constitué d'un élément d'encliquetage élastique (12) qui comprend un chanfrein d'entrée et une arête en retrait par rapport au chanfrein d'entrée, de façon à ce que, lors de l'engagement de l'élément d'appui (6) dans le boîtier de luminaire (2), l'élément d'encliquetage (12) soit dévié de manière élastique par une force agissant sur le chanfrein d'entrée, jusqu'à ce qu'il revienne élastiquement grâce à un retrait dans le boîtier de luminaire (2), de façon à ce que l'arête de l'élément d'encliquetage (12) s'accroche au retrait du boîtier de luminaire.
  5. Luminaire selon la revendication 4, dans lequel l'élément d'encliquetage (12) est accessible sans outil dans l'état monté, plus particulièrement il peut être actionné manuellement à travers une ouverture (16) dans le boîtier de luminaire (2), afin de détacher l'élément d'encliquetage (12) du boîtier de luminaire (2).
  6. Luminaire selon l'une des revendications précédentes, dans lequel un des points d'appui est constitué d'un crochet (8) qui peut être accroché dans le boîtier de luminaire et l'élément d'appui (6) peut être pivoté avec le crochet (8) accroché dans le boîtier de luminaire.
  7. Luminaire selon l'une des revendications précédentes, dans lequel les éléments de ressorts (14) comprennent au moins trois éléments de ressorts (14) qui agissent chacun avec une force élastique de manière directe ou indirecte sur le sous-ensemble à LED (4).
  8. Luminaire selon la revendication 7, dans lequel les éléments de ressorts (14) jusqu'au milieu de la nervure (10) sont réalisés avec une constante élastique plus élevée, plus particulièrement sont munis de branches de ressorts plus longues et/ou plus rigides que les éléments de ressorts (14) se trouvant aux extrémités de la nervure (10).
  9. Luminaire selon l'une des revendications précédentes, dans lequel le sous-ensemble à LED (4) comprend un couvercle (5) et le sous-ensemble à LED (4) est enfiché sur le boîtier de luminaire avec un joint d'étanchéité autoportant (18).
  10. Luminaire selon la revendication 9, dans lequel les joints d'étanchéité (18) présentent, en section transversale perpendiculaire à l'extension longitudinale, des lamelles latérales qui sont disposées avec un angle obtus par rapport à une direction d'enfichage du joint d'étanchéité (18) dans une rainure du boîtier de luminaire (2) et/ou une rainure du sous-ensemble à LED (4), afin de résister à un désengagement à l'encontre de la direction d'enfichage hors de la rainure dans le boîtier de luminaire (2) et/ou le sous-ensemble à LED (4).
  11. Luminaire selon l'une des revendications précédentes, dans lequel l'élément d'appui (6) est guidé au centre par l'intermédiaire du sous-ensemble à LED (4) et les éléments de ressorts (14) sont disposés de préférence à des positions qui sont sans importance en ce qui concerne l'émission de lumière par le sous-ensemble à LED (4).
  12. Luminaire selon l'une des revendications précédentes, dans lequel l'élément d'appui (6) est conçu pour loger d'autres composants en plus du sous-ensemble à LED sur le côté opposé au sous-ensemble à LED.
  13. Luminaire selon la revendication 12, dans lequel les autres composants comprennent une optique additionnelle et/ou des lamelles et/ou une grille (20) pour al protection contre des actions mécaniques.
  14. Luminaire selon l'une des revendications précédentes, dans lequel des éléments métalliques de l'élément d'appui sont conçus comme une antenne et l'antenne est reliée avec un appareil de commande du luminaire dans le boîtier de luminaire (2) ou le sous-ensemble à LED (4).
EP18705325.1A 2017-02-02 2018-01-29 Système de montage sans outil d'un module à led dans un luminaire présentant un indice de protection élevé Active EP3577391B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017102063.2A DE102017102063A1 (de) 2017-02-02 2017-02-02 Werkzeugloses Montagesystem für eine LED-Baugruppe in einer Leuchte höherer Schutzart
PCT/EP2018/052132 WO2018141688A1 (fr) 2017-02-02 2018-01-29 Système de montage sans outil d'un module à led dans un luminaire présentant un indice de protection élevé

Publications (2)

Publication Number Publication Date
EP3577391A1 EP3577391A1 (fr) 2019-12-11
EP3577391B1 true EP3577391B1 (fr) 2021-02-24

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EP18705325.1A Active EP3577391B1 (fr) 2017-02-02 2018-01-29 Système de montage sans outil d'un module à led dans un luminaire présentant un indice de protection élevé

Country Status (3)

Country Link
EP (1) EP3577391B1 (fr)
DE (1) DE102017102063A1 (fr)
WO (1) WO2018141688A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011051094U1 (de) * 2011-08-25 2012-11-28 Zumtobel Lighting Gmbh Leuchteneinheit für eine Leuchte, sowie Leuchte
DE202015100151U1 (de) * 2015-01-14 2016-04-15 Turck Holding Gmbh Linearleuchtmittel

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010023497B4 (de) 2010-03-11 2018-08-16 Liebherr-Hausgeräte Lienz Gmbh Beleuchtungseinheit
DE102010031190A1 (de) 2010-07-09 2012-02-09 Trilux Gmbh & Co. Kg Leuchtkörper mit LEDs
CN103807817A (zh) 2012-11-09 2014-05-21 欧司朗有限公司 保持结构和具有该保持结构的照明装置
DE102014112657B4 (de) 2014-09-03 2017-08-03 Siteco Beleuchtungstechnik Gmbh Leuchte für ein Lichtbandsystem
DE202015104043U1 (de) 2014-12-08 2016-03-09 Tridonic Gmbh & Co Kg Befestigungsbrücke zur Befestigung von LED-Modulen an Befestigungsschienen
DE102015105506A1 (de) 2015-04-10 2016-10-13 Trilux Gmbh & Co. Kg Feuchtraumleuchte sowie Dichtelement für eine solche Leuchte

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011051094U1 (de) * 2011-08-25 2012-11-28 Zumtobel Lighting Gmbh Leuchteneinheit für eine Leuchte, sowie Leuchte
DE202015100151U1 (de) * 2015-01-14 2016-04-15 Turck Holding Gmbh Linearleuchtmittel

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DE102017102063A1 (de) 2018-08-02
EP3577391A1 (fr) 2019-12-11
WO2018141688A1 (fr) 2018-08-09

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