EP3244125A1 - Lighting device made up of luminous elements and striplight made up of a plurality of such lighting devices - Google Patents

Lighting device made up of luminous elements and striplight made up of a plurality of such lighting devices Download PDF

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Publication number
EP3244125A1
EP3244125A1 EP16169730.5A EP16169730A EP3244125A1 EP 3244125 A1 EP3244125 A1 EP 3244125A1 EP 16169730 A EP16169730 A EP 16169730A EP 3244125 A1 EP3244125 A1 EP 3244125A1
Authority
EP
European Patent Office
Prior art keywords
lighting
illumination
support plate
light
dome
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.)
Withdrawn
Application number
EP16169730.5A
Other languages
German (de)
French (fr)
Inventor
Stephane Bochenek
Original Assignee
Stephane Bochenek
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stephane Bochenek filed Critical Stephane Bochenek
Priority to EP16169730.5A priority Critical patent/EP3244125A1/en
Publication of EP3244125A1 publication Critical patent/EP3244125A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
    • F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F21S2/005—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction of modular construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S6/00—Lighting devices intended to be free-standing
    • 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
    • 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
    • F21S8/08—Lighting devices intended for fixed installation with a standard
    • F21S8/085—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
    • 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
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • 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
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F21V23/007—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array enclosed in a casing
    • F21V23/009—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array enclosed in a casing the casing being inside the housing of the lighting device
    • 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
    • F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/06—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light or radiation of shorter wavelength; Actuation by intruding sources of heat, light or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light or radiation of shorter wavelength; Actuation by intruding sources of heat, light or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/194—Actuation by interference with heat, light or radiation of shorter wavelength; Actuation by intruding sources of heat, light or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
    • G08B13/196—Actuation by interference with heat, light or radiation of shorter wavelength; Actuation by intruding sources of heat, light or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
    • G08B13/19617—Surveillance camera constructional details
    • G08B13/19632—Camera support structures, e.g. attachment means, poles
    • 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
    • F21S8/043—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures mounted by means of a rigid support, e.g. bracket or arm
    • 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
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/0004—Personal or domestic articles
    • F21V33/0052—Audio or video equipment, e.g. televisions, telephones, cameras or computers; Remote control devices 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
    • F21W2131/103—Outdoor lighting of streets or roads
    • 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
    • F21Y2101/00—Point-like light sources
    • 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
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/40—Light sources with three-dimensionally disposed light-generating elements on the sides of polyhedrons, e.g. cubes or pyramids
    • 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]

Abstract

This lighting device is formed from light elements (L1, L2, ... L20) arranged on a support plate (PS1, PS2, ;;;). The pad or pads are arranged to provide illumination according to a determined coverage. The plates comprise a plugging system (C1, C2, C3, P1, P2, P3) for the connection of said light elements. The mounting of such a device using a threaded rod 7 provides easy maintenance of the device of the invention. This device easily fits into the constitution of lighting ramps.

Description

  • The present invention relates to a lighting device formed from light elements, a power supply circuit for powering said elements.
  • The present invention also relates to a lighting ramp formed by a plurality of such lighting devices.
  • Such devices are well known especially those using LEDs as light elements. The LEDs provide powerful lighting considering their electrical power consumed. In many applications, omnidirectional and intense lighting is desired whereas LED diodes provide rather highly directional light flows.
  • The object of the invention is to provide a lamp which takes advantage of the performance qualities of LEDs and which illuminates in an omnidirectional manner while having the possibility of obtaining a high light intensity.
  • For this, a device of the kind mentioned in the preamble is remarkable in that said elements are organized in at least one set of at least one light element.
  • According to one aspect of the invention, the device comprises a plurality of said assemblies arranged on at least one support plate and arranged so as to provide lighting according to a determined coverage,
  • Thus by increasing the number of assemblies directed to different directions, one obtains an omnidirectional lighting or a lighting having a given light coverage and also a brightness that can be stronger.
  • An interesting application of the invention is that concerning the lighting of car parks which requires ease of maintenance and also installation.
  • For maintenance, the invention proposes a platelet insertion system to facilitate their replacement in case of failure. With regard to the ease of installation, the power supply circuit is of a controlled type to adjust the supply voltage of the light elements thus compensating for any voltage drops due to the length of the power supply cable. to feed the ramp. Indeed, if we are dealing with a ramp of such devices, the voltage accessible at the end of the ramp is much lower than at the beginning. It should be noted that the power cable carrying preferably a Low voltage value does not require any precautions or authorization for the installation of such a ramp.
  • The following description accompanied by the accompanying drawings, all given by way of non-limiting example, will make it clear how the invention can be realized. In the drawings:
    • the figure 1 shows in perspective a lighting device according to the invention,
    • the figure 2 shows a plate for sets of luminous elements suitable for a device according to the invention,
    • the figure 3 shows how said set plates are displayed on illumination facets placed on the support plate of the device,
    • the figure 4 shows how the protective dome of the device is arranged on the support plate,
    • the figure 5 shows an arrangement of the supply elements of said device of the invention,
    • the figure 6 shows a ramp of lighting devices according to the invention,
    • the figure 7 shows ramps according to the invention for lighting a car park,
    • the figure 8 shows an exemplary embodiment of a lighting device according to the invention,
    • the figure 9 shows the transmission of images involving the device shown in figure 8 ,
    • the figure 10 explicit the connections of the device shown at the figure 8 .
  • In these figures, the common elements all have the same references in all the figures.
  • To the figure 1 , the lighting device shown is formed of a base 5 of circular shape, for example. In the center of this base, is fixed the end of a threaded rod 7. At a distance from the base 5 is fixed a support plate 10 through which this threaded rod 7. This distance is determined by a nut, no shown, which blocks the vertical displacement of the support plate 10. On this support plate 10 are arranged illumination facets F1, F2, F3, F4 and F5. On these facets are fixed support plates some of which (PS1, PS2, ...) only are referenced on the figure to avoid overloading it. On each of these plates is placed a set E1 of luminous elements L1 ... L20 as shown in FIG. figure 2 . The positioning of the facets and even of said plates makes it possible to adjust the direction and distribution of the radiation in the space.
  • The figure 3 shows that the PS1 support pads are removable to facilitate their replacement. For this purpose, connectors C1, C2, C3,... Integral with the pads PS1 are provided on these plates and come into contact with catches P1, P2, P3 respectively formed on the illumination facets (F1,. .
  • The lighting device comprises a protective dome 20 made of transparent material such as polymethylmethacrylate better known under the trade name of "plexiglass". This dome 20 is in the form of a hemisphere whose base rests on the support plate 10. To center this dome, there are provided pins 25, 26, 27, ... 31 as shown in FIG. the figure 4 . These lugs are arranged at the periphery of the support plate 10. A hole 40 at the top of this dome makes it possible to pass the threaded rod.7. Another hole 61 visible on the figure 4 is formed in the support plate 10 for the passage of a cable 63. A nut 43 maintains the dome 20 against the support plate 10.
  • A supply circuit 60 is placed under the illumination facets F1 ... F5. This circuit is connected to the power cable 63 which passes through the hole 61. This circuit is formed by a transformer 65 of a control electronics 67 and an accumulator system 69. The transformer is of a type a regulation which provides, especially for lighting, a determined voltage for a voltage range which is applied to its input. The battery 69 preserves the illumination during a power failure and can thus provide a backup voltage to at least one light element.
  • The mounting of the device of the invention based on a threaded rod allows easy disassembly which, associated with the possibility of easily changing the support plates (PS1 etc.) offers great ease for the maintenance of this device.
  • Advantageously, the devices of the invention are well adapted to a ramp configuration. Thanks to the invention, it is possible to play on the light distribution by tilting the different facets F1, F2, ...; to obtain a distribution or coverage of the desired illumination of each device. In addition, the regulation of the voltages brought by the regulated transformers makes it possible to obtain ramps of great range without deterioration of light intensity at the end of the line. The figure 6 shows the structure of such a ramp which consists of a plurality of devices according to the invention 100, 101, 102, 103 which are all connected to a power cable 63.
  • An application area of such ramp is the parking lighting This is shown in the figure 7 . The car park consists of two bays: a first bay for vehicles V1, V2, ..., V5 and a second bay for vehicles V11, V12, ..., V15. Each of these bays is assigned a ramp. A first ramp is assigned to the first span and consists of the lighting devices 111, 112, 113, 114 and 115. These devices are powered by the cable 63. A second bay is illuminated by the lighting devices 121, 122 , 123, 124 and 125. They are powered via a power cable 63 '. It should be noted that since the voltage of such ramps can remain at a low value, these lamps do not present any danger during shocks with the vehicles in operation.
  • Another example of application of the invention is shown at figure 8 . In this example the lamp is fixed to the ceiling of a room and a video camera 210 has been inserted for the surveillance of this room. The lens of this camera is flush with the outer level of the F5 facet, as shown in figure 9 . Its layout is such that it allows objects to be seen at an angle α as large as possible and is sufficiently depressed to avoid the glare provided by the surrounding LEDs.
  • This camera 215 is connected to a PLC device 217 (in-line carrier current coupling device) which makes it possible to transmit on the same line a supply current and data, therefore the images picked up by the camera 215, to a pole of 300 to be viewed on a screen 310. The images are accessible at the monitoring pole 300 by another PLC device 317 through the cable 63. The reference 330 indicates a power source for at least one lamp. It is possible to provide, at the monitoring pole 300, various CPL devices 320, 321, .. assigned to different cameras belonging to different lamps.
  • The figure 10 shows that just as on the figure 5 , the various elements including the coupling device 217 are placed under the illumination facets F1 ... F5.
  • The lighting device finds another application in the context of lighting a room such as office or meeting room. It is possible in the base 5 of the lamp to fix a strong WIFI relay used in this kind of room. This is shown by the reference 350. This allows the participants in the work room to have an easy connection to the WIFI network.

Claims (15)

  1. Lighting device formed from light elements (L1, L2, ... L20), a power supply circuit (60) for supplying said elements, characterized in that said elements are organized in at least one set ( E1) of at least one luminous element placed on a support plate (PSI, PS2, ..)
  2. Lighting device according to claim 1 characterized in that said support plates (PSI, PS2, ...) are arranged on illumination facets (F1, F2, F3 ...).
  3. Lighting device according to claim 1 characterized in that said support plates (PSI, PS2, ..) and / or said illumination facets (F1, F2, F3 ..) are arranged so as to provide illumination according to a determined cover
  4. Lighting device according to claim 1 or 2 or 3 characterized in that the supply circuit (60) comprises an accumulator system (69) for providing a backup voltage to at least one light element.
  5. Lighting device according to one of claims 1 to 4 characterized in that it comprises a support plate (10) on which at least said sets.
  6. Lighting device according to claim 5 characterized in that said support plates comprise a plugging system (C1, C2, C3, P1, P2, P3) for the connection of said light elements.
  7. Lighting device according to one of claims 1 to 6 characterized in that it comprises a protective dome (20) preferably transparent covering at least said sets.
  8. Device according to one of claims 5 to 7 characterized in that said support plate (10) comprises centering pins (25 -32) arranged on its periphery to center said dome (10).
  9. Lighting device according to one of Claims 5 to 8, characterized in that a threaded rod (7) is provided for supporting at least said support plate (10) and said dome (20).
  10. Illumination device according to one of Claims 1 to 9, characterized in that the supply circuit (60) comprises an electrical transformer (65) for supplying a supply voltage at a given value as a function of a voltage d input having variable voltages.
  11. Lighting device according to one of Claims 1 to 10, characterized in that at least one of the said luminous elements consists of at least one LED of the LED type.
  12. Lighting device according to one of Claims 1 to 11, characterized in that a video camera (215) is arranged in the lamp.
  13. Illumination device according to Claim 12, characterized in that the images are transmitted by means of a lamp supply cable (63) via a CPL coupler (217, 317 ..).
  14. Lighting device according to one of claims 1 to 13 characterized in that a WIFI relay is disposed at the base of the lamp.
  15. Lighting beam formed by a plurality of said lighting devices according to one of the preceding claims fed by a power cable (63).
EP16169730.5A 2016-05-13 2016-05-13 Lighting device made up of luminous elements and striplight made up of a plurality of such lighting devices Withdrawn EP3244125A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16169730.5A EP3244125A1 (en) 2016-05-13 2016-05-13 Lighting device made up of luminous elements and striplight made up of a plurality of such lighting devices

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP16169730.5A EP3244125A1 (en) 2016-05-13 2016-05-13 Lighting device made up of luminous elements and striplight made up of a plurality of such lighting devices
US15/189,865 US10317028B2 (en) 2016-05-13 2016-06-22 Lighting device made up of lighting elements and striplight made up of a plurality of such lighting devices
PCT/FR2017/051162 WO2017194900A1 (en) 2016-05-13 2017-05-12 Lighting device made of light-emitting elements and light bar made of a plurality of such lighting devices
EP17727304.2A EP3455548A1 (en) 2016-05-13 2017-05-12 Lighting device made of light-emitting elements and light bar made of a plurality of such lighting devices

Publications (1)

Publication Number Publication Date
EP3244125A1 true EP3244125A1 (en) 2017-11-15

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EP16169730.5A Withdrawn EP3244125A1 (en) 2016-05-13 2016-05-13 Lighting device made up of luminous elements and striplight made up of a plurality of such lighting devices
EP17727304.2A Withdrawn EP3455548A1 (en) 2016-05-13 2017-05-12 Lighting device made of light-emitting elements and light bar made of a plurality of such lighting devices

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP17727304.2A Withdrawn EP3455548A1 (en) 2016-05-13 2017-05-12 Lighting device made of light-emitting elements and light bar made of a plurality of such lighting devices

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US (1) US10317028B2 (en)
EP (2) EP3244125A1 (en)
WO (1) WO2017194900A1 (en)

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EP3244125A1 (en) * 2016-05-13 2017-11-15 Stephane Bochenek Lighting device made up of luminous elements and striplight made up of a plurality of such lighting devices

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US20170328530A1 (en) 2017-11-16

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