EP3056807A1 - Verbesserter Beleuchtungskörper - Google Patents

Verbesserter Beleuchtungskörper Download PDF

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Publication number
EP3056807A1
EP3056807A1 EP15154618.1A EP15154618A EP3056807A1 EP 3056807 A1 EP3056807 A1 EP 3056807A1 EP 15154618 A EP15154618 A EP 15154618A EP 3056807 A1 EP3056807 A1 EP 3056807A1
Authority
EP
European Patent Office
Prior art keywords
housing member
base member
light fixture
spacer
opening
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.)
Granted
Application number
EP15154618.1A
Other languages
English (en)
French (fr)
Other versions
EP3056807B1 (de
Inventor
Wim Gielen
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.)
Orbit
Original Assignee
Orbit
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Filing date
Publication date
Application filed by Orbit filed Critical Orbit
Priority to EP15154618.1A priority Critical patent/EP3056807B1/de
Publication of EP3056807A1 publication Critical patent/EP3056807A1/de
Application granted granted Critical
Publication of EP3056807B1 publication Critical patent/EP3056807B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F21V21/08—Devices for easy attachment to any desired place, e.g. clip, clamp, magnet
    • F21V21/096—Magnetic devices
    • 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
    • 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
    • F21V21/14—Adjustable mountings
    • F21V21/30—Pivoted housings or frames
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • F21V29/773—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
    • 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 light fixture having a housing member magnetically coupled and moveable with respect to a base member.
  • Light fixtures comprising a housing member and a base member, which are magnetically coupled to each other, such that the housing member is tiltable and rotatable with respect to the base member, are known from DE 20 2012 100 901 U1 and WO 2011/148286 A1 .
  • Such light fixtures have the disadvantage that there is a high risk that the surfaces of the housing member, the base member, or magnetic components coupling the housing member and the base member to each other, get damaged, for example by scratching, when they are moving along each other when the housing member is moved with respect to the base member.
  • the invention provides a light fixture comprising a housing member and a base member magnetically coupled to each other, wherein the housing member is provided for holding at least one light source and has at least one light opening for light from the at least one light source to exit the housing member, wherein the base member and the housing member are configured for moveably arranging a mounting part of the housing member in the base member, such that the housing member is tiltable with respect to the base member, and such that the housing member is rotatable around an axis of the base member, wherein the light fixture is provided with at least one spacer, wherein the at least one spacer is provided for maintaining a predetermined distance between the housing member and the base member, such that direct contact between the housing member and the base member is prevented while the magnetic coupling between the housing member and the base member remains active, and wherein the at least one spacer is in a predetermined soft material enabling the tilting and rotating of the housing member with respect to the base member without scratching.
  • the at least one spacer has the advantage that it maintains a predetermined distance between the housing member and the base member, and thus prevents the housing member and the base member from being in direct contact with each other, such that there is no risk of the housing member and the base member scratching and damaging each other while the housing member is rotated and tilted with respect to the base member.
  • the at least one spacer being in a predetermined soft material enabling the tilting and rotating of the housing member with respect to the base member without scratching, then has the advantage that there is only very little or practically no risk of the at least one spacer itself damaging one or both of the housing member and the base member while the housing member is being tilted an rotated with respect to the base member.
  • the predetermined soft material is selected such that the material of the at least one spacer is sufficiently soft with respect to the material of the surface which is moved along the at least one spacer, the material of said surface being the material of the relevant part of one or both of the housing member and the base member.
  • the predetermined distance between the housing member and the base member is in the range of 0.5-2.0 mm, preferably 0.5-1.5 mm, more preferably 0.8-1.2 mm, and even more preferably 1.0 mm.
  • the inventors have found the at least one spacer maintaining a predetermined distance between the housing member and the base member in this range, to be an optimum balance between maintaining a distance between the housing member and the base member to prevent direct contact between the housing member and the base member, and between positioning the housing member and the base members as close as possible to each other to ensure a strong magnetic coupling between them without needing to use stronger and more expensive magnets.
  • the material of the at least one spacer has a hardness in the range of 90-120 on the Rockwell R hardness scale.
  • the inventors have found the hardness of the material of the at least one spacer being in the range of 90-120 on the Rockwell R hardness scale, to be an optimum balance between making the material of the at least one spacer soft enough to prevent the at least one spacer from scratching one or both of the housing member and the base member, and between making the material of the at least one spacer hard enough to withstand the force of the magnetic coupling between the housing member and the base member and to reduce wear of the at least one spacer.
  • At least one of the base member and the mounting part of the housing member is provided with at least one magnet, and, if not provided with the at least one magnet, comprises a material which is attracted towards magnets.
  • the at least one magnet is provided on the base member and the mounting part of the housing member comprises the material which is attracted towards magnets, although other configurations are possible.
  • the at least one spacer comprises at least one first spacer arranged on or near the at least one magnet.
  • the inventors have found it to be beneficial to arrange at least one first spacer of the at least one spacer on the at least one magnet, since the force holding the housing member and the base member together is stronger near the at least one magnet, such that there the risk of damaging one or both of the housing member and the base member while tilting and rotating the housing member with respect to the base member would otherwise be the largest.
  • the mounting part of the housing member has a substantially spherical outer surface, preferably a spherical outer surface
  • the base member is provided with a substantially circular mounting opening, preferably a circular mounting opening, in which the mounting part of the housing member is moveably arranged, thereby at least supporting on the base member at the edge of the mounting opening, and wherein the at least one spacer comprises a second spacer arranged at the edge of the mounting opening.
  • the inventors have found the shape of the spherical outer surface of the mounting part of the housing member and the shape of the circular mounting opening of the base member to be both very suitable and very simple shapes for use in combination with each other for tilting and rotating the housing member with respect to the base member.
  • the simplicity of the shapes simplifies the design of the light fixture according to the present invention.
  • the circular mounting opening has a very suitable shape for supporting the housing member on the base member from different directions, and thus provides a very stable support for the housing member.
  • the shape of the spherical outer surface of the mounting part of the housing member is very suitable for maintaining this stable support from all directions when the housing member is being tilted and rotated with respect to the base member.
  • the inventors have found the edge of the mounting opening to be a very suitable place to provide a second spacer of the at least one spacer on. This allows the load of the magnetic forces coupling the housing member and the base member to each other, to be distributed in different directions and over relatively large area along the second spacer, which may decrease wear on one or both of the second spacer and the housing member.
  • This embodiment is certainly advantageous in combination with the embodiment where the at least one first spacer of the at least one spacer is arranged on or near the at least one magnet.
  • the load of the magnetic forces magnetically coupling the housing member and the base member to each other is distributed over the at least one first spacer and the second spacer, which decreases wear of the at least one first spacer and the second spacer, especially for the at least one spacer arranged on or near the at least one magnet, because there the magnetic forces are stronger.
  • the combination also further enables the tilting and rotating of the housing member with respect to the base member without scratching. It also has the advantage that less force is required for tilting and rotating the housing member with respect to the base member.
  • the base member comprises a static part and a rotating part, wherein the static part is provided for being fixed to a surface, such as for example a wall, a floor, a ceiling or any other surface suitable for mounting a light fixture thereon, and wherein the rotating part is rotatably mounted on the static part and provided for following the rotation of the housing member around the axis of the base member.
  • the at least one magnet is provided on the rotating part of the base member and the mounting part of the housing member comprises a material which is attracted towards magnets, or the at least one magnet is provided on the mounting part of the housing member and the rotating part of the base member comprises a material which is attracted towards magnets.
  • This embodiment has the advantage that no additional means have to be provided to make the rotating part follow the rotation of the housing member around the axis of the base member, since the use of the at least one magnet and the material which is attracted towards magnets magnetically couples the mounting part of the housing member and the rotating part of the base member to each other, such that the rotating part of the base member follows the rotation of the mounting part of the housing member, and thus the rotation of the housing member.
  • This may simplify the design of the light fixture according to the present invention.
  • Magnetically coupling the rotating part of the base member and the mounting part of the housing member to each other also has the advantage that the at least one magnet does not move along and thus cannot damage the surface of the housing member or the surface of the base member, while the housing member is being rotated around the axis of the base member. This is advantageous since the magnetic force, and thus also the risk of the at least one magnet damaging the surface of one or both of the base member and the housing member, is stronger near the at least one magnet.
  • the base member is provided for limiting the rotation of the housing member to a predetermined rotation range, the base member therefore comprising a first stop element and a second stop element, wherein the first stop element is arranged on the static part of the base member, wherein the second stop element is arranged on the rotating part of the base member, such that the movement of the second stop element, following the rotation of the housing member, is stopped against the first stop element at the ends of the predetermined rotation range.
  • Providing the base member for limiting the rotation of the housing member to the predetermined rotation range has the advantage that connecting components, such as for example electrical wires, passing through the base member towards the housing are prevented from being twisted beyond the predetermined rotation range, which could possibly damage said connecting components.
  • the inventors have found the combination of the first stop element and the second stop element to be a simple means to limit the rotation of the housing member to the predetermined rotation range which may simplify the design of the light fixture.
  • At least one of the first stop element and the second stop element is arranged moveably on respectively the static part of the base member and the rotating part of the base member along the rotation direction of the second stop element and over a distance of at least the size of the first stop element along the rotation direction of the second stop element.
  • This embodiment has found this embodiment to be beneficial to enable the housing member to do a full rotation around the axis of the base member, thus over a predetermined rotation range of 360°. This is not possible with a first stop element fixed to the static part of the base member and a second stop element fixed to the rotating part of the base member, since in this case the second stop element cannot be positioned at the location where the first stop element is located. Being able to complete the full rotation has the advantage that the light housing can be rotated towards any direction along the axis of the base member.
  • the rotating part of the base member is provided with a longitudinal slot for the passage of a connecting component, such as for example an electrical wire, through the base member towards the housing member, wherein the longitudinal slot is arranged such that the electrical wire moves along the longitudinal direction of the longitudinal slot while the housing member is being tilted with respect to the base member.
  • a connecting component such as for example an electrical wire
  • the longitudinal slot has the advantage that the connecting component can move freely within the base member while the housing member is being tilted with respect to the base member, such that the connecting component is less prone to be damaged.
  • the base member is provided for being mounted to a surface, such as for example a wall, a ceiling, a floor, or any other surface suitable for mounting a light fixture thereon.
  • the base member is provided for being mounted in an opening through the surface, optionally in such a way that the base member does not extend beyond a front side of the surface, on which front side the housing member is to be arranged.
  • the base member is provided with at least one wing element for supporting the base member on a back side of the surface, which back side is opposite of the front side of the surface, the at least one wing element comprising a connecting part via which the at least one wing element is connected to the exterior of the base member, and a supporting part extending outwardly from the exterior of the base member and provided for supporting on the back side of the surface.
  • the inventors have found the at least one wing element of the light fixture according to this embodiment of the present invention a beneficial and simple means to mount the base member in an opening through the surface.
  • the at least one wing element only needs to be positioned at the back side of the surface with the supporting part of the at least one wing element supporting on, and optionally connected or attached to, the back side of the surface. Then, the base member can be inserted in the opening through the surface to be connected to the at least one wing element via the connecting part of the at least one wing element.
  • the connecting part of the at least one wing element is provided for being connected to the base member by means of at least one screw
  • the base member is provided at the exterior with at least one longitudinal screw slot, wherein the at least one screw slot has an open end at an insertion side of the base member, with which insertion side the base member is to be inserted first in the opening through the surface, and wherein the at least one screw slot extends from the insertion side over a predetermined length along an insertion direction, along which insertion direction the base member is to be inserted in the opening through the surface.
  • the at least one longitudinal screw slot having the open end is advantageous for mounting the base member in the opening through the surface.
  • the use of the at least one screw slot enables the at least one wing element to be positioned in advance at the desired position on the back side of the surface with the at least one screw already arranged in the connecting part of the at least one wing element.
  • the base member is inserted in the opening through the surface with the open end of the at least one screw slot facing the at least one screw already arranged in the connecting part, such that the at least one screw slides into the at least one screw slot.
  • the base member With the at least one screw slidingly arranged in the at least one screw slot, the base member can be moved back and forth in the opening through the surface until it is located at a desired position. Then, the at least one screw can be fastened to connect the base member and the at least one wing element to each other.
  • the supporting part of the at least one wing element is provided for being connected to the surface by means of at least one screw, and preferably provided with a plurality of screw openings arranged in a grid distributed over the entire supporting part.
  • the plurality of screw openings arranged in a grid distributed over the entire supporting part of the at least one wing element is advantageous for screwing the at last one screw through the supporting part from the front side of the surface, while the supporting part is supporting on the back side of the surface. If the supporting part has only one screw opening, it is difficult to position the supporting part of the at least one wing element at the right position at the back side of the surface and to simultaneously position the screw at the front side of the surface such that it will be screwed exactly through the screw opening of the supporting part which is not visible from the front side of the surface. This is solved by using the grid of screw openings.
  • the supporting part of the at least one wing element can be positioned on the back side of the surface and the at least one screw can be positioned on the front side of the surface in the area opposite of the area where the supporting part is located on the back side of the surface.
  • the at least one screw is then screwed through the surface, then the at least one screw very likely encounters one or more of the screw openings in the grid through which it can be screwed.
  • the housing member is provided with a heat sink for the at least one light source and with at least one cooling fin, preferably a plurality of cooling fins, connecting the heat sink to the exterior of the housing member for removing heat from the heat sink out of the housing member, wherein the heat sink and the at least one cooling fin form an integral part of the housing member, and wherein the heat sink and the at least one cooling fin are arranged on the inside of the housing member.
  • the heat sink and the at least one cooling fin are advantageous for cooling off the at least one light source, and thereby protecting the at least one light source from being damaged by overheating.
  • Arranging the at least one cooling fin at the inside of the housing member has the advantage that the outer surface of the housing member, and certainly of the mounting part of the housing member, can be provided as a smooth surface. This is advantageous for moveably arranging the mounting part of the housing member in the base member, which would be more difficult with the presence of cooling fins arranged at the outside of the housing member.
  • the at least cooling fin By arranging the at least cooling fin at the inside of the housing it is also easy to provide the housing member such that the at least cooling fin is not visible from the outside of the housing member. This has an aesthetical advantage, since cooling fins are perceived by most people as ugly, and because it opens more possibilities of designing the exterior of the housing member.
  • Forming the heat sink and the at least one cooling fin as an integral part of the housing member has the advantage that the heat is easily conducted from the heat sink towards the exterior of the housing member, without any obstructions, for example caused by incompatible thermal conduction parameters between different materials of the heat sink, the at least one cooling fin and the exterior of the housing member.
  • the housing member is further provided for holding a power supply for the at least one light source, wherein the at least one light source and the power supply are arranged at different sides, preferably at opposing sides, of the heat sink.
  • Using the same heat sink for both the at least one light source and the power supply for the at least one light source has the advantage that no additional heat sink must be provided to also remove heat from the power supply out of the housing member, and that also the same at least one cooling fin is shared for the same purpose.
  • the housing member is provided with a cover opening, in which a first cover element is arranged.
  • the cover opening is beneficial for accessing the interior of the housing member, for example for maintenance.
  • the first cover element forms at least a part of the mounting part of the housing member.
  • the mounting part forms a separate component of the housing member, which can be given different material properties as the other components of the housing member.
  • the first cover element may be manufactured from a material which is attracted towards magnets to magnetically couple the mounting part of the housing member and the at least one magnet arranged on the base member to each other, whereas the other components of the housing member may be manufactured from a material which is not or only very weakly attracted towards magnets, such that those components do not influence the magnetic coupling between the housing member and the base member.
  • the material used for the other components may then for example be selected on the basis of different requirements such as for example good heat conductivity and light weight, etc.
  • the housing member is provided with at least a first ventilation opening and a second ventilation opening, wherein the first ventilation opening and the second ventilation opening are arranged with respect to each other such that an air flow through said ventilation openings is directed along the at least one light source.
  • the first ventilation opening and the second ventilation opening being arranged such that an air flow passing via said ventilation openings through the housing member along the at least one light source arranged inside the housing member, is advantageous for cooling off the light source or any other components arranged inside the housing member near the at least one light source which give off heat, such as for example a power supply of the at least one light source. Thereby, the at least one light source and said other component are protected from being damaged by overheating.
  • the first ventilation opening is provided at the circumference of the first cover element arranged in the cover opening
  • the second ventilation opening is provided at the circumference of a second cover element arranged in the at least one light opening.
  • the inventors have found it to be beneficial to use the cover opening or at least the part of the cover opening surrounding the first cover element, when the cover opening is provided in the housing member, also as the first ventilation opening, since then no additional opening needs to be provided in the housing member to perform the function of the first ventilation opening. This simplifies the design of the light fixture according to the present invention.
  • the inventors have found it to be beneficial to use the at least one light opening or at least the part of the at least one light opening surrounding the second cover element, which is already present in the housing member, also as the second ventilation opening, since then no additional opening needs to be provided in the housing member to perform the function of the second ventilation opening. This simplifies the design of the light fixture according to the present invention.
  • the at least one light source comprises at least one LED lamp.
  • LED lamps as a light source has the advantage of reduced energy consumption, and is thus both ecological an economical.
  • the at least one spacer is manufactured from a material selected from the list consisting of nylon and felt.
  • the material which is attracted towards magnets is a ferromagnetic material.
  • a ferromagnetic material offers the advantage of being attracted strongly towards magnets, such that the housing member and the base member are strongly coupled to each other magnetically.
  • At least the part of housing member besides the mounting part comprises a material selected from the list consisting of aluminium, aluminium alloy and aluminium alloy 360, and preferably aluminium alloy 360.
  • Aluminium and aluminium alloys offers the advantage of good heat conductivity, which is beneficial in removing the heat from a light source arranged inside the housing to the outside of the housing member.
  • a further advantage of aluminium and aluminium alloys is their light weight and relative strength, which is beneficial in reducing the overall weight of the housing member while maintaining the strength of the housing member.
  • aluminium and aluminium alloys are materials which are only very weakly attracted towards magnets, such that the part of the housing member besides the mounting part does not or only very limitedly interfere in the magnetic coupling between the housing member and the base member.
  • top, bottom, over, under and the like in the description and the claims are used for descriptive purposes and not necessarily for describing relative positions. The terms so used are interchangeable under appropriate circumstances and the embodiments of the invention described herein can operate in other orientations than described or illustrated herein.
  • Figures 1-8 show an embodiment of a light fixture 1 according to the present invention.
  • Figures 1-4 show an exploded view of the light fixture 1 from different angles.
  • Figure 5 shows a perspective view on the light fixture 1.
  • Figures 6-8 show the light fixture 1 mounted in an opening 32 through a surface 31, such as for example a ceiling, a wall, a floor, etc. The present invention will now be discussed with respect to these figures.
  • the light fixture 1 comprises a housing member 2 and a base member 12.
  • the housing member 2 is used as a housing for a light source 8, and the base member 12 as a supporting base for the housing member 2 with which the light fixture 1 may be mounted to a surface 31, such as for example a ceiling, a wall, a floor, or other suitable surfaces.
  • the light source 8 is arranged inside the housing member 2.
  • a Light Emitting Diode LED
  • the housing member 2 is provided with a light opening 6, which is provided in the housing member 2 to allow light, which is emitted by the light source 8, to exit the housing member 2.
  • a second cover element 7 in the light opening 6. This second cover element 7 extends from the light source 8 towards the light opening 6, and is further provided, for example by means of a reflective surface, for guiding the light emitted by the light source 8 towards the light opening 6.
  • the housing member 2 comprises a mounting part 3, which is provided for being mounted in the base member 12.
  • the mounting part 3 is located at the back side of the housing member 2, and is formed by a first cover element 5 arranged in a cover opening 4 of the housing member 2 and by a part of the housing member 2 surrounding the cover opening 4.
  • the cover opening 4 is provided in the housing member 2 to allow access, for maintenance or other purposes, to the interior of the housing member 2 from the back side of the housing member 2.
  • the mounting part 3 is moveably arranged in the base member 12, such that the housing member 2 is tiltable with respect to the base member 12, and such that the housing member 2 is rotatable around an axis of the base member 12.
  • said axis is the central axis of the cylinder shaped base member 12. It should, however, be clear that in a different embodiment of the light fixture 1 according to the present invention the axis may have a different orientation.
  • base member 12 is provided with a circular mounting opening 14 to moveably arrange the mounting part 3 of the housing member 2 in the base member 12. This is done by positioning the mounting part 3 of the housing member 2 in the mounting opening 14, such that the mounting part 3 of the housing member 2 supports on the base member 12 at the edge of the mounting opening 14.
  • the outer surface of the mounting part 3 of the housing member 2 has a spherical shape, such that the housing member 2 can be tilted and rotated with respect to the base member 12 while the mounting part 3 of the housing member 2 remains supported on the base member 12 at the edge of the mounting opening 14.
  • the housing member 2 and the base member 12 are magnetically coupled to each other.
  • the base member 12 is provided with a plurality of magnets 28 and the mounting part 3 of the housing member 2 comprises a material which is attracted towards magnets, such that the mounting part 3 of the housing member 2 is magnetically attracted to the base member 12.
  • the magnets 28 it is also possible for the magnets 28 to be arranged on the mounting part 3 of the housing member 2 and for the base member 12 to comprise the material which is attracted towards magnets 28, or for the magnets 28 to be arranged on both the mounting part 3 of the housing member 2 and the base member 12 with their attracting magnetic poles facing each other, to realise the magnetic coupling.
  • the first cover element 5 arranged in the cover opening 4 is manufactured from a material which is attracted towards magnets, such as for example steel.
  • the part of the housing member 2 surrounding the cover opening 4 and forming part of the mounting part 3 of the housing member 2 needs not necessarily to be manufactured from a material which is attracted towards magnets, since the first cover element 5 is sufficiently large such that in any possible orientation of the housing member 2 with respect to the base member there is sufficient overlap between the first cover element 5 and the magnets 28 to provide sufficient magnetic attraction between the first cover element 5 and the magnets 28 to magnetically couple the housing member 2 and the base member 12 to each other.
  • the material of which the part of the housing member 2 surrounding the cover opening 4 is manufactured may be selected on different requirements for the material properties, such as for example good thermal conductivity, light weight, etc.
  • This also allows the remainder of the housing member 2 to be integrally formed with the part of the housing member 2 surrounding the cover opening 4, and to be manufactured from a material which is not or only very weakly attracted towards magnets, such that the remainder of the housing member 2 does not interfere in the magnetic coupling between the housing member 2 and the base member 12.
  • the magnets 28 are distributed along a side of the base member 12 facing the housing member 2. Furthermore, the magnets 28 are oriented on said side in such a way that their orientation substantially conforms to the shape of the outer surface of the mounting part 3 of the housing member 2. In this way, all the magnets 28 are positioned at substantially the same distance from the mounting part 3 of the housing member 2, such that a substantially uniform magnetic attraction is provided between the housing member 2 and the base member 12.
  • the light fixture 1 is provided with several spacers 29, 30.
  • the function of these spacers 29, 30 is to maintain a predetermined distance between the housing member 2 and the base member 12, such that there is no direct contact between the housing member 2 and the base member 12, and such that there is thus no possibility of the housing member 2 and the base member 12 scratching or damaging each other.
  • the spacers 29, 30 themselves are manufactured from a predetermined soft material, which is selected to not scratch or damage the material of the housing member 2 and the base member 12.
  • a first spacer 29 is arranged on each magnet 28 on the side of the magnet 28 facing the mounting part 3 of the housing member 2.
  • a second spacer 30 is arranged on the base member 12 at the edge of the mounting opening 14.
  • the first spacers 29 are used mainly as a backup for the second spacer 30. Meaning that in first instance the second spacer 30 performs the function of the spacers, and that the first spacers 29 take over the function of the spacers if the second spacer 30 is no longer able to maintain the predetermined distance between the housing member 2 and the base member 12, if the second spacer 30 for example got damaged by wear. For this reason, the second spacer 30 maintains a slightly larger predetermined distance between the housing member 2 and the base member 12 as the predetermined distance which is maintained between the housing member 2 and the base member 12 by the first spacers 29.
  • first spacers 29 and the second spacer 30 are also beneficial to provide in a different type of predetermined soft material, such that it for example becomes more difficult to tilt and/or rotate the housing member 2 with respect to the base member 12 when the first spacers 29 perform the function of the spacers, thereby indicating that the second spacer 30 needs to be replaced while the housing member 2 and the base member 12 are still prevented from being scratched.
  • both the first spacers 29 and the second spacer 30 for maintaining the same predetermined distance between the housing member 2 and the base member 12. In this case neither one of the two spacers 29, 30 is used as backup for the other.
  • the second spacer 30 is also possible to use the second spacer 30 as backup for the first spacers 29.
  • the base member 12 comprises a static part 13 and a rotating part 16.
  • the static part 13 is provided for fixing the base member 12 to a surface, such as for example a ceiling, a wall, a floor, etc.
  • the rotating part 16 is rotatably mounted on the static part 13, and provided for following the rotation of the housing member 2 around the axis of the base member 12.
  • the rotating part 16 is rotatably mounted on the static part 13 by supporting the disc shaped rotating part 16 on a circular support ridge 36 extending inwards from the side wall of the tube shaped static part 13, in such a way that the rotating part 16 is rotatable on the support ridge 36 inside the static part 13.
  • the second spacer 30 is pushed against the rotating part, performing at this position the same function as the support ridge 36 on the opposite side of the rotating part 16.
  • the use of the second spacer 30 is beneficial for this purpose, since the predetermined soft material of the second spacer is also a very suitable material, or may at least easily be provided for such purpose, for reducing the friction between the rotating part 16 and the second spacer 30, thereby facilitating the rotation of the rotating part 16 on the second spacer 30.
  • This is certainly beneficial when the light fixture 1 is fixed to a ceiling, whereby the rotating part 16 supports on the second spacer 30 because of gravity.
  • the support ridge 36 is made from the same material as the static part 13, and thus not necessarily provided for reducing the friction between the rotating part 16 and the support ridge 36 and thereby facilitating the rotation of the rotating part 16 on the support ridge 36.
  • the support ridge 36 may however in other embodiments also be provided in a material suitable for reducing the friction between the rotating part 16 and the support ridge 36, or in a material similar to the material of the second spacer 30.
  • the rotating part 16 of the base member 12 is provided in mainly two ways for following the rotation of the housing member 2 with respect to the base member 12.
  • the magnets 28 and the material which is attracted towards magnets are configured such that the magnetic coupling between the housing member 2 and the base member 12 is sufficiently strong that the housing member 2 drags the rotating part 16 along in the rotation of the housing member 2 with respect to the base member 12.
  • This in combination with configuring the base member 12 such that the friction between the rotating part 16 and the static part 13 is minimal and that the rotating part 16 is easily rotated with respect to the static part 13.
  • the mounting part 3 of the housing member 2, more specifically the first cover element 5 arranged in the cover opening 4, is provided with a guiding protrusion 35 which is arranged through a longitudinal slot 18 of the rotating part 16. If the housing member 2 is then rotated with respect to the base member 12, then the guiding protrusion 35 pushes against the edges of the longitudinal slot 18, thereby dragging the rotating part 16 along with the rotation of the housing member 2 with respect to the base member 12.
  • the longitudinal slot 18 is provided in the rotating part 16 to allow a connecting component, such as for example an electrical wire, to pass from the exterior of the light fixture 1 into the housing member 2 via the base member 12.
  • the longitudinal shape of the longitudinal slot 18 allows free passage of the connecting component through the rotating part 16 in the different positions that the connecting component may adopt when the housing member 2 is being tilted with respect to the base member 12.
  • the guiding protrusion 35 is provided at an entrance opening in the first cover element 5, through which entrance opening a connecting component, such as an electrical wire, enters the housing member 2.
  • the guiding protrusion 35 also protects the connecting component from being damaged against one or both of the edges of the longitudinal slot 18 of the rotating part 16 and the edges of the entrance opening in the first cover element 5.
  • the base member 12 is configured to limit the rotation of the housing member 2 around the axis of the base member 12 to a predetermined rotation range, in this specific embodiment a rotation range of just above 360°, for example to prevent a connecting component, such as an electrical wire, passing through the base member 12 from being twisted too much. Therefore, the static part 13 of the base member 12 is provided with a first stop element 15, and the rotating part 16 of the base member 12 is provided with a second stop element 17.
  • the first stop element 15 and the second stop element 17 are arranged such that the second stop element 17, rotating together with the rotating part 16 when the housing member 2 is being rotated with respect to the base member 2, is stopped against opposite sides of the first stop element 17 at the beginning and at the end of the predetermined rotation range.
  • the first stop element 15 is formed by a screw 15 which is inserted through the second spacer 30 into the side wall of the static part 13.
  • the head of the screw 15 is positioned inside the static part 13, and it forms the part of the first stop element 15 against which the second stop element 17 is stopped at the beginning and the end of the predetermined rotation range.
  • the second stop element 17 is formed by a part of the rotating part 16 that is plied out of the plane of the rotating part 16 and is perpendicular to said plane.
  • this problem is solved by moveably mounting the first stop element 15 to the static part 13 over a predetermined distance of at least the size of the first stop element 15 along the rotation direction of the second stop element 17, or shortly the width of the first stop element 15. In this way the second stop element 15 can be positioned at the location of the first stop element 15 by pushing the first stop element 15 aside at the beginning and at the end of the predetermined rotation range.
  • the first stop element 15 is moveably mounted to the static part 15 by arranging the end of the screw 15 opposite of the screw head in a longitudinal stop element slot 37 in the side wall of the static part 13.
  • the stop element slot 37 is oriented with its longitudinal direction along the rotation direction of the second stop element 17.
  • the static part 13 is configured such that the first stop element 15 drags the second spacer 30 along, when the first stop element 15 is being moved in the stop element slot 37.
  • Another solution to this problem is to moveably mount the second stop element 17 to the rotating part 16 over the predetermined distance mentioned above.
  • Yet another solution would be to both moveably mount the first stop element 15 to the static part 13 and to moveably mount the second stop element 17 to the rotating part 16 over a total distance equal to the predetermined distance mentioned above.
  • the static part 13 of the base member 12 is provided, by means of two wing elements 23, for being mounted in an opening 32 through a surface 31, such as a ceiling, a wall, a floor, etc., as can be seen in Figures 6-8 .
  • Each wing element 23 comprises a supporting part 24 and a connecting part 27.
  • the supporting part 24 is provided such that the wing element 23 supports on the back side 34 of the surface 31 with the supporting part 24 when the base member 12 is mounted in the opening 32 through the surface 31.
  • the supporting part 24 is further provided for being connected to the surface 31 by means of a screw 26 which is screwed through the surface 31 from the front side 33 to the back side 34 of the surface 31 and then through the supporting part 24.
  • the supporting part 24 is provided with a plurality of screw openings 25 arranged in a grid distributed over the entire supporting part 24. In this way, it is very likely that the screw 26 pierces through the supporting part 24 through one or more of the screw openings 25. This without the need of having to accurately position the screw 26 with respect to the supporting part 24, for example right in front of a single screw opening of the supporting part 24.
  • the connecting part 27 is provided for connecting the wing element 23 to the static part 13 of the base member 12 by means of a screw 21. For this reason, the connecting part 27 is provided with an opening (not visible) for the screw 21 and the static part 13 of the base member 12 is provided with longitudinal screw slots 19 for the screw 21.
  • the screw slots 19 have an open end 20 on the insertion side 22 of the base member 12, which insertion side 22 faces the surface 31 when the base member 12 is being inserted in the opening 32 through the surface 31.
  • the screw slots 19 extend on the static part 13 over an insertion direction along which the base member 12 is to be inserted in the opening 32 through the surface 31 while mounting the base member 12 in the opening 32.
  • the connecting part 27 is also provided with a T-shaped guiding lip 38 for guiding the connecting part 27 in the screw slots 19 of the base member 12.
  • the vertical part of the T-shape of the guiding lip 38 is to be arranged in the screw slot 19 and the horizontal part of the T-shape of the guiding lip 38 is to be arranged inside the base member 12.
  • the guiding lip 38 is slideable in the screw slot 19, and with the width of the aforementioned horizontal part of the T-shape being wider than the width of the screw slot 19, the wing element 23 may not be detached from the base member 12, except by removing the guiding part 19 out of the screw slot 19 via the open end 20 of the screw slot 19.
  • the light source 8 is arranged on a heat sink 10.
  • a power supply 9 for the light source 8 inside the housing member 2 which power supply 9 is in this embodiment a transformer 9 for the LED lamp 8.
  • the power supply 9 is arranged on the same heat sink 10 as the light source 8, but on a side opposite of the side on which the light source 8 is arranged.
  • the heat sink 10 is provided for removing excess heat from the light source 8 and the power supply 9, and for transporting said excess heat out of the housing member 2 via a plurality of cooling fins 11 arranged inside the housing member 2 between the exterior wall of the housing member 2 and the heat sink 10.
  • the heat sink 10 and the cooling fins 11 form an integral part of the housing member 2 to assure an optimal transport of excess heat out of the housing member 2.
  • the housing member 2 is provided with a first ventilation opening 4 and a second ventilation opening 6. These ventilation openings 4, 6 are arranged with respect to each other such that an air flow going through the housing member 2 via the ventilation openings 4, 6 passes along the light source 8.
  • the first ventilation opening 4 is formed at the circumference of the first cover element 5 by providing the first cover element 5 with a smaller diameter as the cover opening 4, such that there is a ring of open space left around the first cover element 5 arranged in the cover opening 4.
  • the second ventilation opening 6 is formed similarly at the circumference of the second cover element 7 by providing the second cover element 7 with a smaller diameter as the light opening 6, such that there is a ring of open space left around the second cover element 7 arranged in the light opening 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP15154618.1A 2015-02-11 2015-02-11 Verbesserter Beleuchtungskörper Not-in-force EP3056807B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15154618.1A EP3056807B1 (de) 2015-02-11 2015-02-11 Verbesserter Beleuchtungskörper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15154618.1A EP3056807B1 (de) 2015-02-11 2015-02-11 Verbesserter Beleuchtungskörper

Publications (2)

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EP3056807A1 true EP3056807A1 (de) 2016-08-17
EP3056807B1 EP3056807B1 (de) 2017-01-25

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2695950A (en) * 1952-05-14 1954-11-30 Neo Ray Products Inc Adjustable magnetically supported light
DE4142954A1 (de) * 1991-12-24 1993-07-01 Suck Hans Juergen Schwenkbarer objekttraeger, insbesondere raumleuchte
US20060262523A1 (en) * 2005-05-21 2006-11-23 Smith Ben C Portable lamp with detachable stand
WO2011148286A1 (en) 2010-05-27 2011-12-01 Alessia Vignola Magnetic multidirectional system for lighting elements
DE202012100901U1 (de) 2012-03-13 2013-06-14 BÄRO GmbH & Co. KG Einbauleuchte

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2695950A (en) * 1952-05-14 1954-11-30 Neo Ray Products Inc Adjustable magnetically supported light
DE4142954A1 (de) * 1991-12-24 1993-07-01 Suck Hans Juergen Schwenkbarer objekttraeger, insbesondere raumleuchte
US20060262523A1 (en) * 2005-05-21 2006-11-23 Smith Ben C Portable lamp with detachable stand
WO2011148286A1 (en) 2010-05-27 2011-12-01 Alessia Vignola Magnetic multidirectional system for lighting elements
DE202012100901U1 (de) 2012-03-13 2013-06-14 BÄRO GmbH & Co. KG Einbauleuchte

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