EP4357665A1 - Luminaire suspendu à antenne à fente intégrée - Google Patents

Luminaire suspendu à antenne à fente intégrée Download PDF

Info

Publication number
EP4357665A1
EP4357665A1 EP22201843.4A EP22201843A EP4357665A1 EP 4357665 A1 EP4357665 A1 EP 4357665A1 EP 22201843 A EP22201843 A EP 22201843A EP 4357665 A1 EP4357665 A1 EP 4357665A1
Authority
EP
European Patent Office
Prior art keywords
installation frame
slot antenna
antenna
cover plate
frame according
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.)
Pending
Application number
EP22201843.4A
Other languages
German (de)
English (en)
Inventor
Steffen Block
Christian Daniel
Ronald Kreilhuber
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.)
Zumtobel Lighting GmbH
Original Assignee
Zumtobel Lighting 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
Application filed by Zumtobel Lighting GmbH filed Critical Zumtobel Lighting GmbH
Priority to EP22201843.4A priority Critical patent/EP4357665A1/fr
Priority to PCT/EP2023/077302 priority patent/WO2024083496A1/fr
Publication of EP4357665A1 publication Critical patent/EP4357665A1/fr
Pending legal-status Critical Current

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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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0435—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by remote control 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
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • F21S8/026—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
    • 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
    • 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
    • F21S8/061—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension with a non-rigid pendant, i.e. a cable, wire or chain
    • 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
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • 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
    • F21S8/063—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension with a rigid pendant, i.e. a pipe or rod
    • 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

Definitions

  • the present invention relates generally to luminaires having a wireless data transmission function and, more particularly, to pendant luminaires.
  • radio communication can be used not only to control luminaires (or luminaries), but also for other services.
  • DE 10 2011 007416 A1 discloses a pendant luminaire equipped with a wireless network module to receive control signals and to provide Internet access for WLAN devices, wherein the wireless network module is located in the luminaire housing suspended from the ceiling.
  • the wireless module and operating device (ballast) that powers the light source are located outside the luminaire housing in a separate enclosure (installation frame) mounted in or on the ceiling for design or safety reasons.
  • the quality of the radio connection depends on the environment of the antenna of the wireless module (transceiver) and the installation frame usually consists of metal parts that negatively affect the radio connection.
  • an object of the present invention is to provide an apparatus and a method, which reduce the above problems.
  • an object of the present invention is to provide an installation frame and a pendant luminaire, with which radio propagation conditions for a transceiver housed in the installation frame can be improved.
  • the installation frame for a pendant luminaire comprises fastening means for fastening/fixing the installation frame in a recess of a ceiling, mounting means for mounting the pendant luminaire to the installation frame and at least one slot antenna formed into the installation frame.
  • the slot antenna can consist of one or more openings, in particular slots, which are formed in a metallic part of the installation frame.
  • the metallic part can form a waveguide, into which a portion of the radiated electromagnetic waves of the radio signal emitted by an antenna located inside the installation frame is coupled, wherein the opening(s) in the metallic part, which is fed by the propagation modes of electromagnetic waves inside the waveguide, acts as slot antenna radiating wireless signals to an external device.
  • the fastening means can include one or more attachment springs attached to the outer peripheral surface of the installation frame and biased outward, so that the attachment spring acts on the surface of the recess to fix the installation frame in the recess.
  • the recessed mounting such as those used to install recessed light fixtures in ceilings, can be used.
  • the mounting means for mounting the pendant luminaire to the installation frame can comprise one or more chains, cables, cords or rods for suspending the pendant luminaire and/or screws or hooks for fixing the chains, cables, cords or rods to the pendant luminaire and the installation frame.
  • the installation frame can have a cup shape.
  • the installation frame can be substantially a (rectangular) parallelepiped, which has an upper side to be inserted into the recess of the ceiling, an underside facing the pendant luminaire and permanent sidewalls to at least the left, right, front and rear.
  • At least one slot antenna can be formed into at least one of the permanent sidewalls so that the signal can be radiated laterally into the space above a suspended ceiling.
  • a (removable) cover plate can close the underside.
  • at least one slot antenna can be formed into the cover plate so that the signal can be radiated into the space below the (dropped) ceiling.
  • At least one slot antenna can be formed by the cover plate and one of the permanent sidewalls so that the slot antenna radiates the signal laterally below the (dropped) ceiling.
  • a flange can be formed on the underside, the flange abutting an outer surface of the ceiling when the installation frame is inserted into the recess.
  • At least one slot antenna can be arranged between the cover plate and the flange so that the slot antenna is covered up by the cover plate and is therefore not visible.
  • the at least one slot antenna can be formed in an edge/bar of the flange, on which the cover plate 1a rests.
  • at least one slot antenna can be formed by the cover plate (1a) and a section of the permanent side wall, on which no flange is arranged, i.e., the slot of the slot antenna is formed by the cover plate (1a) and a flange-free section of one of the permanent side walls.
  • At least one slot antenna can be formed into a sidewall of the upper side so that the signal can be radiated upward into the space above a suspended ceiling.
  • the installation frame can comprise at least two slot antennas having different radiation and/or polarization directions.
  • the installation frame can comprise a device having an antenna for transmitting and/or receiving a radio signal to/from the at least one slot antenna or a mounting case for mounting the device in the installation frame.
  • the device can be a control gear (ballast) that powers the light source or a radio module.
  • the mounting case can comprise a slot antenna facing the at least one slot antenna formed into the installation frame, i.e., the slot (antenna) of the mounting case and the slot (antenna) of the installation frame are located opposite to each other.
  • the device can comprise a housing having a slot antenna facing the at least one slot antenna formed into the installation frame.
  • the fastening means can be configured to fasten the installation frame in a recess of a suspended ceiling.
  • the pendant luminaire comprises the described installation frame, a luminaire housing for a light source, an operating device arranged in the installation frame and configured to provide a supply voltage to the light source and an electric line for connecting the operating device and the light source.
  • the operating device or a radio module can comprise the (internal) antenna located inside the installation frame, wherein the electric line acts as an (external) antenna and is coupled to the internal antenna by inductive, capacitive or radiation coupling.
  • FIG. 1 and FIG. 2 show a pendant luminaire according to a first embodiment of the present invention in side view and perspective view, respectively.
  • the pendant luminaire comprises an installation frame 1, which is installed in a recess of a suspended ceiling 2, a luminaire housing 3 including a light source (not shown) and a reflector 4 for reflecting the light generated by the light source and two cables 5a, 5b, with which the luminaire housing 3 is suspended from the dropped (false) ceiling 2 and the light source is supplied with energy.
  • the dropped (false) ceiling 2 is attached to a concrete ceiling 6 with steel strips 7, 8 and the installation frame 1 is fixed in the recess by brackets 9, 10.
  • the installation frame 1 is of metal and can be made by bending a sheet metal part with an opening at the bottom.
  • FIG. 3 shows the installation frame 1 before installation in the suspended ceiling 2.
  • a flange 1b is formed around the opening, which rests against the surface of the suspended ceiling 2 when the installation frame 1 is inserted into the recess 2a (as indicated by the arrows).
  • the brackets 9, 10 are foldable for inserting the frame into the recess 2a.
  • FIG. 1 and FIG. 2 the installation frame 1 is closed with a cover plate 1a through which the cables 5a, 5b pass.
  • FIG. 4 shows the pendant luminaire with the cover plate 1a open and, in a separate window A, a section of the installation frame 1 including a cable clamp 13a (strain relief) for cable 5a.
  • a cable clamp 13b is also provided for cable 5b, wherein the cable clamps 13a, 13b are used to fix the luminaire housing 3 in a desired vertical position.
  • the operating voltage/current for the light source (e.g., LED module) is generated by an operating device arranged in the installation frame 1 and generated based on a control signal.
  • the operating device (not shown) is connected to mains cable 11, the cables 4, 5 and a radio module (transmitter) that receives the control signal and outputs the received control signal to the operating device.
  • the received control signal or a status signal indicating the operating status (on/off) can be forwarded to another pendant luminaire.
  • the pendant luminaire is configured to send or receive signals to/from other pendant luminaires.
  • the installation frame 1 comprises a slot antenna 12 that is fed by the signal send from the radio module, wherein a portion of the radiated electromagnetic waves of the signal emitted by the antenna of the radio module is coupled into the installation frame 1 forming a waveguide and the slot antenna 12 fed by the propagation modes of electromagnetic waves inside the waveguide radiates the (control) signal to the other pendant luminaire which is constructed in the same way and receives the control signal via its slot antenna.
  • the slot antenna 12 is directed towards to the other pendant luminaire and radiates the control/status signal into the space between the suspended ceiling 2 and the concrete ceiling 6.
  • the radio module or the antenna of the radio module is positioned within the installation frame 1 in such a way that a good coupling to the slot antenna 12 is achieved, e.g., centered on the slot with a distance to the slot that is greater than ⁇ /2.
  • the installation frame 1 is cuboidal and the slot for the slot antenna 12 can be formed on any side (including the cover plate 1a) or edge.
  • the slot measures at least one dimension ⁇ /2, wherein ⁇ is the wavelength corresponding to a transmission frequency f c of the radio signal used by the radio module.
  • the other dimension may correspond to the material thickness of the installation frame 1 (or the respective side), for example one to two millimeters.
  • FIG. 5 shows a cross sectional view of an installation frame 1 according to a second embodiment of the present invention.
  • the installation frame 1 of FIG. 5 comprises the radio module 14 and four slot antennas 12, 15, 16, 17, one on each of the longitudinal sides of the installation frame 1 (including the cover plate 1a).
  • the slot antennas 12, 15 and 16 radiate the control/status signal into the space between the suspended ceiling 2 and the concrete ceiling 6, and the slot antenna 17 formed in the cover plate 1a radiates the control/status signal below the suspended ceiling 2 in the direction of the luminaire housing 3 (not shown).
  • FIG. 6 shows a cross sectional view of an installation frame 1 according to a third embodiment of the present invention, in which two slot antennas 18 and 19 are arranged in the flange 1b instead of the slot antenna 17 arranged in the cover plate 1a.
  • the outer edge of the flange 1b is bent in the direction of the cover plate 1a to form a bar 1c on which the cover plate 1a rests and in which the slot antennas 18 and 19 are formed.
  • the slot antennas 18 and 19 radiate the signal laterally below the suspended ceiling 2. Since the cover plate 1a covers the slot antennas 18 and 19 in the vertical direction, they are hardly visible.
  • the bar ic having the slot antennas 18 and 19 can be formed on the cover plate 1a.
  • FIG. 7 shows a cross sectional view of an installation frame 1 according to a fourth embodiment of the present invention, in which the installation frame 1 comprises a housing 20 for the radio module 14 and the operating device (not shown).
  • the housing 20 having a similar cuboid shape to the installation frame 1 is made of metal and is fixed into the installation frame 1 by means of screws (not shown).
  • the housing 20 For transmitting the control/status signal, the housing 20 comprise a slot antenna 21 facing the slot antenna 12 formed into the installation frame 1, a slot antenna 22 facing the slot antenna 15 formed into the installation frame 1 and a slot antenna 23 facing the slot antenna 16 formed into the installation frame 1.
  • the housing 20 is open at the bottom so that there is a direct coupling between the slot antennas 18, 19 and the radio module 14.
  • the slot antennas 18 and 19 radiating the signal laterally below the suspended ceiling 2 are formed in the bar ic of the flange 1b (or a bar of the cover plate 1a).
  • slot antennas can be formed through recesses in the flange 1b to radiate the signal laterally below the suspended ceiling 2.
  • FIG. 8 shows a cross sectional view of an installation frame 1 according to a fifth embodiment of the present invention, in which a slot antenna 24 radiating the signal below the suspended ceiling 2 in direction Z is formed by a recess/gap in the flange 1b, i.e., by a flange-free section with a length ⁇ /2 in direction X and a width in direction Y corresponding to the material thickness of the flange 1b (the installation frame 1).
  • the signal is radiated by means of at least one slot antenna 12, 15..19 formed in the installation frame 1, wherein a slot in the installation frame 1 is preferably sized so as to resonate in a desired frequency band, thereby forming a slot antenna radiating element.
  • the signal can also be emitted via at least one of the cables 5a and 5b.
  • FIG. 8 shows an installation frame 1 according to a sixth embodiment of the present invention in a top view. As shown in FIG. 8 , the cables 5a and 5b passing through the cover plate 1a are fixed with the cable clamps 13a, 13b and are connected to an operating device 25. The part of the cable 5b extending outwardly from the installation frame 1 serves as an antenna, the cable 5b being wrapped around the radio module 14, i.e., around the antenna thereof, to enable coupling between the cable 5a and the antenna of the radio module 14.
  • the cover plate 1a can be a part of the installation frame 1.
  • the operating device 25 and/or the radio module 14 can be mounted on the cover plate 1a so that they are inserted and positioned in the installation frame 1 when the installation frame 1 is closed with the cover plate 1a.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Support Of Aerials (AREA)
EP22201843.4A 2022-10-17 2022-10-17 Luminaire suspendu à antenne à fente intégrée Pending EP4357665A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP22201843.4A EP4357665A1 (fr) 2022-10-17 2022-10-17 Luminaire suspendu à antenne à fente intégrée
PCT/EP2023/077302 WO2024083496A1 (fr) 2022-10-17 2023-10-03 Luminaire pendant à antenne à fente intégrée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22201843.4A EP4357665A1 (fr) 2022-10-17 2022-10-17 Luminaire suspendu à antenne à fente intégrée

Publications (1)

Publication Number Publication Date
EP4357665A1 true EP4357665A1 (fr) 2024-04-24

Family

ID=84358985

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22201843.4A Pending EP4357665A1 (fr) 2022-10-17 2022-10-17 Luminaire suspendu à antenne à fente intégrée

Country Status (2)

Country Link
EP (1) EP4357665A1 (fr)
WO (1) WO2024083496A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202017002938U1 (de) * 2017-06-02 2017-07-07 Detlev Belau Geschlossener Leuchtenkörper für LED Leuchtmittel
US20180242436A1 (en) * 2017-02-22 2018-08-23 Panasonic Intellectual Property Management Co., Ltd. Lighting-up device and luminaire
WO2020124145A1 (fr) * 2018-12-18 2020-06-25 David Frederick Small Dispositif et système de détection de sécurité

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180242436A1 (en) * 2017-02-22 2018-08-23 Panasonic Intellectual Property Management Co., Ltd. Lighting-up device and luminaire
DE202017002938U1 (de) * 2017-06-02 2017-07-07 Detlev Belau Geschlossener Leuchtenkörper für LED Leuchtmittel
WO2020124145A1 (fr) * 2018-12-18 2020-06-25 David Frederick Small Dispositif et système de détection de sécurité

Also Published As

Publication number Publication date
WO2024083496A1 (fr) 2024-04-25

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