EP3882513B1 - Beleuchtungssystem - Google Patents

Beleuchtungssystem Download PDF

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Publication number
EP3882513B1
EP3882513B1 EP21162517.3A EP21162517A EP3882513B1 EP 3882513 B1 EP3882513 B1 EP 3882513B1 EP 21162517 A EP21162517 A EP 21162517A EP 3882513 B1 EP3882513 B1 EP 3882513B1
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EP
European Patent Office
Prior art keywords
lighting
bar
electrical connection
lighting system
lighting device
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
EP21162517.3A
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English (en)
French (fr)
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EP3882513A1 (de
Inventor
Roberto Botti
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.)
SIMES Societa Italiana Medicinali e Sintetici SpA
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SIMES Societa Italiana Medicinali e Sintetici SpA
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
Priority claimed from IT102020000005665A external-priority patent/IT202000005665A1/it
Priority claimed from IT102021000004706A external-priority patent/IT202100004706A1/it
Application filed by SIMES Societa Italiana Medicinali e Sintetici SpA filed Critical SIMES Societa Italiana Medicinali e Sintetici SpA
Publication of EP3882513A1 publication Critical patent/EP3882513A1/de
Application granted granted Critical
Publication of EP3882513B1 publication Critical patent/EP3882513B1/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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/002—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips making direct electrical contact, e.g. by piercing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
    • F21S8/066—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension from a light track
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/34—Supporting elements displaceable along a guiding element
    • F21V21/35—Supporting elements displaceable along a guiding element with direct electrical contact between the supporting element and electric conductors running along the guiding element
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/001—Arrangement of electric circuit elements in or on lighting devices the elements being electrical wires or cables
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a lighting system comprising a lighting bar and at least one lighting device couplable to the lighting bar, in any position which is axial with respect thereto.
  • Lighting bars suitable to produce a diffused light beam are known.
  • Lighting devices suitable to generate a light beam which is concentrated, or directed to illuminate a specific area or an item are also known.
  • Document WO 2019/175913 A1 discloses a lighting system comprising an electrified support body and at least one connection device which can be electrically connected to said support body.
  • the lighting system comprises:
  • the lighting bar comprises:
  • Each lighting device is provided with mechanical connection means, suitable to interact with the bar body for mechanically supporting the lighting device by means of the lighting bar, and electrical connection needles, suitable to create an electrical contact with the second electrical power supply line by passing through the insulating body, so as to electrically power the lighting device.
  • reference numeral 1 indicates a lighting system according to the invention as a whole.
  • the lighting system 1 comprises a lighting bar 10 and at least one lighting device 100; 100' couplable to the lighting bar, in any axial position along the lighting bar.
  • a projector 100 with adjustable optics and a downlight 100' with fixed optics are coupled to the lighting bar 10.
  • other types of devices can be simultaneously connected to the lighting bar 10, according to the coupling methods described below.
  • the lighting bar 10 comprises a bar body 12 which extends longitudinally along a bar axis (X).
  • the bar body 12 is made with an extruded section bar, for example, of aluminum.
  • This bar body 12 is suitable to be fixed to a support, for example a ceiling or a wall, even recessed or suspended.
  • the bar body 12 comprises an inner portion 12a and an outer portion 12b.
  • the inner portion 12a forms a central seat 14 defining a longitudinal central opening 16.
  • the central seat 14 is open along one side of the inner portion 12a, for example, a side opposite to the one for fixing it to the support.
  • the outer portion 12b is coaxial to the inner portion 12a and forms, with the inner portion, two longitudinal side pockets 122 which are open at least in the same direction as the longitudinal central opening 16.
  • the lighting bar 10 comprises a linear lighting source 18 housed in the central seat 14.
  • the linear lighting source 18 comprises a linear electronic lighting board 20, or an elongated electronic board, or a stripshaped one, along the body axis (X).
  • a lighting circuit 22 is obtained, suitable to generate a light beam, preferably substantially continuous, facing towards the longitudinal central opening 16 when it is electrically powered by a first power supply line 25 which extends along the linear electronic board 20.
  • the lighting circuit comprises a row of LEDs 22' mounted and uniformly distributed on the electronic board.
  • the linear electronic board 20 is embedded in an insulating body 24 made of a translucent polymer material, for example a silicone material.
  • the linear electronic board 20 is co-molded with the insulating body 24.
  • the insulating body 24 is crossed by a longitudinal seat and the linear electronic board 20 is subsequently inserted in such longitudinal seat.
  • the insulating body 24 with the linear electronic board 20 gives the lighting bar 10 a degree of protection suitable for the use in outdoor environments, therefore resistant to atmospheric agents and dust.
  • a second electrical power supply line 26 is obtained along the linear electronic board 20, independent of the first one.
  • the two power supply lines 25, 26 comprise of electrical conductors which extend substantially for the entire length of the linear electronic board 20.
  • electrical conductors are in the form of tracks obtained on the linear electronic board 20.
  • each power supply line 25, 26 comprises of a positive pole and a negative pole, for example +24V and -24V.
  • Each lighting device 100; 100' is provided with mechanical connection means 102 suitable to interact with the bar body 12 for mechanically supporting the lighting device 100; 100' by means of the lighting bar 10.
  • each lighting device 100; 100' is provided with electrical connection needles 104 suitable to create an electrical contact with the second electrical power supply line 26.
  • each lighting device 100 is provided with at least one pair of anchoring arms 108, each suitable to be inserted into a respective longitudinal side pocket 122 and to snap-engage the inner portion 12a and/or the outer portion 12b of the bar body 12 for mechanically supporting the lighting device 100 by means of the lighting bar 10.
  • the electrical connection needles 104 are suitable to create an electrical contact with the second electrical power supply line 26 by passing through the insulating body 24.
  • the electrical connection needles 104 are configured so as to pierce the insulating body 24 until they abut against the respective conductors of the second electrical power supply line 26.
  • the anchoring arms 108 and the electrical connection needles 104 are configured to simultaneously obtain the mechanical and electrical connection of the lighting device 100; 100' with the lighting bar 10.
  • the anchoring arms 108 and the electrical connection needles 104 extend from a base portion 106 of the lighting device 100; 100' resting against the lighting bar 10 when the anchoring arms 108 are coupled to the lighting bar 10.
  • the electrical connection needles 104 extend from a connector 120 housed in the base portion 106.
  • This connector 120 is configured to abut against a facing outer surface 24" of the insulating body 24.
  • this outer surface 24" is substantially flat.
  • the connector 120 is configured to create a calibrated interference with the outer surface 24", so as to prevent the penetration of external agents into the area where the insulating body 24 is pierced by the electrical connection needles 104.
  • the connector 120 forms, about each electrical connection needle 104 or about the whole area of the electrical connection needles 104, an annular tooth 122 which, when the lighting device 100; 100' is coupled to the bar body 12, interferes with the outer surface 24" of the insulating body 24, for example, exerting thereon a calibrated pressure which prevents the penetration of external agents inside the area of the insulating body 24 delimited by each annular tooth 122.
  • the inner portion 12a and the outer portion 12b of the bar body 12 respectively comprise of an inner extruded section bar and an outer extruded section bar connected to each other.
  • both section bars are substantially in the shape of a "U".
  • the inner portion 12a has an inner bottom wall 34 and two inner side walls 30; the outer portion 12b has an outer bottom wall 33 and two outer side walls 35.
  • the inner bottom wall 34 is anchored to the outer bottom wall 33, for example by means of screws 37.
  • each outer side wall 35 is substantially parallel to and spaced apart from the respective inner side wall 30.
  • Each longitudinal side pocket 122 is therefore delimited by an inner side wall 30 and by an outer side wall 35.
  • an undercut 32 facing the respective longitudinal side pocket 122 is obtained in each of the inner side walls 30.
  • Each anchoring arm is provided with a locking tooth 110; 110' engageable by a relevant undercut 32 of the inner side wall 30.
  • the anchoring arms 108 are elastic arms snapping into the locking position when the locking tooth 110; 110' meets the undercut 32.
  • the locking tooth 110 has a curvilinear profile, so as to allow the disengagement thereof from the undercut 32 if the lighting device 100; 100' is pulled in a direction orthogonal to the bar axis (X) .
  • the locking tooth 100' is designed so as to prevent a separation of the lighting device 110; 100' from the bar 10.
  • the electrical connection needles 104 extend between and parallel to the anchoring arms 108.
  • the longitudinal central seat 14 is delimited by a bottom wall 34 and by the pair of parallel side walls 30.
  • the linear lighting source 18 rests on the bottom wall 34 and has a light beam emission surface substantially flush with the ends of the side walls 30.
  • the outer surface 24" of the insulating body 24 is substantially flat and coplanar with the ends of the side walls 30.
  • the base portion 106 in contact with the insulating body 24 by means of the connector 120 ensures the degree of protection which allows the use of the lighting system also outdoors.
  • the electrical connection needles 104 are four in number: a first needle pair 104a is aligned parallel to the bar axis X to intercept a first conductor 26a of the second electrical power supply line 26; a second needle pair 104b is aligned parallel to the bar axis X and spaced apart in the transverse direction with respect to the first needle pair 104a to intercept a second conductor 26b of the second electrical power supply line 26.
  • Figure 4 shows a positioning example of the pairs of needles 104a, 104b with respect to the linear lighting source 18, wherein a needle of each pair ends precisely at an interruption - for example of about 1mm - of the conductors 26a, 26b of the linear electronic board 20. It can be noticed that, in this case, the other needle of each pair of needles is instead in contact with the respective conductor 26a, 26b. The power supply of the lighting devices 100, 100' is therefore always ensured, regardless of their position along the bar 10.
  • the two power supply lines 25, 26 are powered by means of a power supply cable 132 electrically connected thereto at one end of the insulating body 24.
  • a power supply cable 132 electrically connected thereto at one end of the insulating body 24.
  • the power supply cable is connected to the power supply lines by means of a cap 130 made of insulating material (for example silicone), co-molded with the insulating body 24.
  • the conductors 25a, 25b of the first power supply line 25 are obtained in a central portion of the linear electronic board 20, so as to intersect the LEDs of a row of LEDs mounted along the median axis of the board.
  • the conductors 26a and 26b of the second power supply line 26 are instead obtained in outermost portions of the linear electronic board 20.

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)

Claims (12)

  1. Beleuchtungssystem (1), umfassend:
    - eine Beleuchtungsleiste (10); und
    - zumindest eine Beleuchtungsvorrichtung (100), die mit der Beleuchtungsleiste koppelbar ist, und zwar an einer beliebigen Position entlang der Beleuchtungsleiste, wobei:
    - die Beleuchtungsleiste umfasst:
    - einen Leistenkörper (12), der sich longitudinal entlang einer Leistenachse erstreckt, geeignet ist, an einer Stütze bzw. einen Träger (2), beispielsweise einer Decke oder einer Wand, befestigt zu werden, und einen zentralen Sitz (14) bildet, der eine longitudinale zentrale Öffnung (16) in dem Leistenkörper definiert;
    - eine lineare Beleuchtungsquelle (18), die in dem zentralen Sitz untergebracht ist und eine lineare elektronische Beleuchtungsplatine (20) umfasst, auf der ein Beleuchtungsschaltkreis (22) enthalten ist, der geeignet ist, einen im Wesentlichen kontinuierlichen, die longitudinale zentrale Öffnung (16) gerichteten Lichtstrahl zu erzeugen, wenn er von einer ersten Leistungsversorgungsleitung (18) elektrisch mit Leistung versorgt wird, die sich entlang der linearen elektronischen Platine (20) erstreckt, wobei die lineare elektronische Platine (20) in einen isolierenden Körper (24) aus einem durchscheinenden Polymermaterial eingebettet ist und mit Form- und/oder Kraftkopplung in den zentralen Sitz (14) eingesetzt ist, um der Lichtleiste einen Grad an Schutz für einen Einsatz im Freien zu geben, wobei eine zweite, von der ersten unabhängige elektrische Leistungsversorgungsleitung (26) entlang der linearen elektronische Platine (20) enthalten ist;
    - jede Beleuchtungsvorrichtung (100) mit mechanischen Verbindungsmitteln (102), die geeignet sind, mit dem Leistenkörper (12) zusammenzuwirken, um die Beleuchtungsvorrichtung (100) mittels der Beleuchtungsleiste (10) mechanisch zu stützen bzw. zu tragen, und mit elektrischen Verbindungs- bzw. Anschlusnadeln (104) versehen ist, die geeignet sind, einen elektrischen Kontakt mit der zweiten elektrischen Leistungsversorgungsleitung (26) herzustellen, indem sie durch den isolierenden Körper (24) verlaufen, um die Beleuchtungsvorrichtung elektrisch mit Leistung zu versorgen.
  2. Beleuchtungssystem nach Anspruch 1, wobei der Leistenkörper (12) einen inneren Abschnitt (12a) und einen äußeren Abschnitt (12b) umfasst, wobei der innere Abschnitt den zentralen Sitz (14) bildet, der die longitudinale zentrale Öffnung (16) in dem inneren Abschnitt definiert, und wobei der äußere Abschnitt (12b) koaxial zu dem inneren Abschnitt ist und mit dem inneren Abschnitt zwei longitudinale Seitentaschen (122) bildet, die zumindest in der gleichen Richtung wie die zentrale Öffnung (16) offen sind, wobei die mechanischen Verbindungsmittel ein Paar Verankerungsarme (108) umfassen, wobei jeder Verankerungsarm (108) geeignet ist, in eine entsprechende longitudinale Seitentasche (122) eingesetzt zu werden und mit dem inneren Abschnitt und/oder dem äußeren Abschnitt des Leistenkörpers (12) in Schnappeingriff zu kommen.
  3. Beleuchtungssystem nach Anspruch 1 oder 2, wobei die mechanischen Verbindungsmittel (102) und die elektrischen Verbindungsnadeln (104) konfiguriert sind, gleichzeitig die mechanische und elektrische Verbindung der Beleuchtungsvorrichtung mit der Beleuchtungsleiste zu erhalten.
  4. Beleuchtungssystem nach Anspruch 2 oder 3, wobei der innere Abschnitt (12a) und der äußere Abschnitt (12b) des Leistenkörpers aus einer inneren Sektionsleiste und einer äußeren Sektionsleiste bestehen, die jeweils miteinander verbunden sind, wobei beide Sektionsleisten im Wesentlichen U-förmig sind.
  5. Beleuchtungssystem nach Anspruch 4, wobei:
    - die innere Sektionsleiste eine innere Bodenwand (34) und zwei innere Seitenwände (30) aufweist, und die äußere Sektionsleiste eine äußere Bodenwand (33) und zwei äußere Seitenwände (35) aufweist;
    - die innere Bodenwand an der äußeren Bodenwand verankert ist;
    - jede äußere Seitenwand im Wesentlichen parallel zu und beabstandet von der jeweiligen inneren Seitenwand ist, um eine jeweilige longitudinale Seitentasche (122) zu bilden.
  6. System nach Anspruch 5, wobei eine der jeweiligen longitudinalen Seitentasche zugewandte Hinterschneidung (32) in jeder der inneren Seitenwänden enthalten ist und wobei jeder Verankerungsarm mit einem Verriegelungszahn (110; 110') versehen ist, durch eine jeweilige Hinterschneidung (32) der inneren Seitenwand (30) in Eingriff nehmbar ist.
  7. Beleuchtungssystem nach einem der Ansprüche 2 bis 6, wobei sich die elektrischen Verbindungsnadeln (104) zwischen und parallel zu den Verankerungsarmen (108) erstrecken.
  8. Beleuchtungssystem nach einem der Ansprüche 2 bis 7, wobei sich die Verankerungsarme und die elektrischen Verbindungsnadeln von einem Basisabschnitt (106) der Beleuchtungsvorrichtung (100) erstrecken, der bzw. die an der Beleuchtungsleiste (12) anliegt, wenn die Verankerungsarme mit der Beleuchtungsleiste gekoppelt sind.
  9. Beleuchtungssystem nach einem der vorhergehenden Ansprüche, wobei sich die elektrischen Verbindungsnadeln (104) von einem Verbinder (120) erstrecken, der in einem Basisabschnitt (106) der Beleuchtungsvorrichtung untergebracht ist und konfiguriert ist, an einer überblickenden äußeren Fläche bzw. Oberfläche (24") des isolierenden Körpers (24) anzuliegen, wodurch eine kalibrierte Interferenz mit der äußeren Fläche (24") erzeugt wird, um das Eindringen externer Mittel in den Perforationsbereich des isolierenden Körpers (24) mittels der elektrischen Verbindungsnadeln (104) zu verhindern.
  10. Beleuchtungssystem nach dem vorhergehenden Anspruch, wobei der Verbinder (120) um jede elektrische Verbindungsnadel (104) oder um den gesamten Bereich der elektrischen Verbindungsnadeln (104) herum einen ringförmigen Zahn (122) bildet, der, wenn die Beleuchtungseinrichtung (100; 100') mit dem Leistenkörper (12) gekoppelt ist, mit der äußeren Fläche (24") des Isolierkörpers (24) zusammentrifft bzw. diese beeinträchtigt.
  11. Beleuchtungssystem nach einem der vorhergehenden Ansprüche, wobei die elektrischen Verbindungsnadeln vier an der Zahl sind, wobei ein erstes Nadelpaar (104a) parallel zu der Leistenachse ausgerichtet ist, um einen ersten Leiter (26a) der zweiten elektrischen Leistungsversorgungsleitung abzufangen, wobei ein zweites Nadelpaar (104b) parallel zu der Leistenachse (X) ausgerichtet und in der Querrichtung in Bezug auf das erste Nadelpaar beabstandet ist, um einen zweiten Leiter (26b) der zweiten elektrischen Leistungsversorgungsleitung (26) abzufangen.
  12. Beleuchtungssystem nach einem der vorhergehenden Ansprüche, wobei der isolierende Körper aus Silikon besteht.
EP21162517.3A 2020-03-17 2021-03-15 Beleuchtungssystem Active EP3882513B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102020000005665A IT202000005665A1 (it) 2020-03-17 2020-03-17 Sistema di illuminazione
IT102021000004706A IT202100004706A1 (it) 2021-03-01 2021-03-01 Sistema di illuminazione

Publications (2)

Publication Number Publication Date
EP3882513A1 EP3882513A1 (de) 2021-09-22
EP3882513B1 true EP3882513B1 (de) 2023-03-08

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EP21162517.3A Active EP3882513B1 (de) 2020-03-17 2021-03-15 Beleuchtungssystem

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4430341A1 (de) 2021-11-08 2024-09-18 Signify Holding B.V. Anpassbares schienenbeleuchtungssystem
IT202200019983A1 (it) 2022-09-28 2024-03-28 Simes ACCESSORIO PER L’INSTALLAZIONE DI UN APPARECCHIO DI ILLUMINAZIONE SU UNA BARRA DI ILLUMINAZIONE, SISTEMA DI ILLUMINAZIONE, METODO DI INSTALLAZIONE e KIT
EP4375566A1 (de) 2022-11-22 2024-05-29 Simes S.p.A. Beleuchtungssystem

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19510507C2 (de) * 1995-03-23 1999-11-18 Alulite Lichtsysteme Gmbh Elektrisches Leuchtensystem
US8915609B1 (en) * 2008-03-20 2014-12-23 Cooper Technologies Company Systems, methods, and devices for providing a track light and portable light
TWI443281B (zh) * 2011-10-21 2014-07-01 Lextar Electronics Corp 燈條結構
US10539308B2 (en) * 2017-02-06 2020-01-21 Ideal Industries Lighting Llc Modular overhead lighting system
IT201800003635A1 (it) * 2018-03-15 2019-09-15 Linea Light S R L Apparato di connessione elettrica

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