EP2765351A1 - Recessed luminaire - Google Patents

Recessed luminaire Download PDF

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Publication number
EP2765351A1
EP2765351A1 EP14154088.0A EP14154088A EP2765351A1 EP 2765351 A1 EP2765351 A1 EP 2765351A1 EP 14154088 A EP14154088 A EP 14154088A EP 2765351 A1 EP2765351 A1 EP 2765351A1
Authority
EP
European Patent Office
Prior art keywords
casing
cover
recessed luminaire
mounting
luminaire 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.)
Granted
Application number
EP14154088.0A
Other languages
German (de)
French (fr)
Other versions
EP2765351B1 (en
Inventor
Ulrich Ermler
Sven Lubahn
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.)
Halemeier GmbH
Original Assignee
Halemeier 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 Halemeier GmbH filed Critical Halemeier GmbH
Publication of EP2765351A1 publication Critical patent/EP2765351A1/en
Application granted granted Critical
Publication of EP2765351B1 publication Critical patent/EP2765351B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • F21V21/02—Wall, ceiling, or floor bases; Fixing pendants or arms to the bases
    • F21V21/04—Recessed bases
    • F21V21/047—Mounting arrangements with fastening means engaging the inner surface of a hole in a ceiling or wall, e.g. for solid walls or for blind holes
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
    • 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
    • F21V15/013—Housings, e.g. material or assembling of housing parts the housing being an extrusion
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/005—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with keying means, i.e. for enabling the assembling of component parts in distinctive positions, e.g. for preventing wrong mounting
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
    • F21V17/164—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
    • F21V19/0035—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources the fastening means being capable of simultaneously attaching of an other part, e.g. a housing portion or an optical component
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
    • F21V19/004—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources by deformation of parts or snap action mountings, e.g. using clips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • 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
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/89—Metals
    • 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
    • F21V33/0012—Furniture
    • 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to a recessed luminaire, comprising a casing, a circuit board that supports at least one light emitting diode, and a cover formed of a transparent material.
  • the invention relates to such a recessed luminaire for a mounting opening of a furniture board.
  • Recessed luminaires for furnitures boards are known, which are mountable in mounting openings of a furniture board. Usually they are mounted in the furniture board with a luminaire front facing downwards, in order to illuminate an area below the furniture board. For example, such recessed luminaires may be applied to display cabinets, shelves or the like.
  • a recessed luminaire of the kind mentioned initially wherein the cover comprises a lens unit, the casing is adapted for accommodating the circuit board and the lens unit, the cover comprises locking members for locking it to the casing, and the cover comprises mounting springs for fixing the recessed luminaire in a mounting opening of a furniture board.
  • the cover comprises locking members for locking it to the casing, as well as mounting springs for fixing it to the mounting opening
  • the cover may be fixed by locking it to the casing without the use of tools, after inserting the circuit board into the casing, and, thereby, the mounting springs are provided at the same time.
  • This is particularly advantageous. Firstly, no further mounting member is required for fixing the cover to the casing.
  • a rigid casing e.g. of metal, because flexible locking members as well as flexible mounting springs may be provided by the cover, which is, for example, formed of transparent plastics.
  • a metal casing is particularly advantageous, since it allows to dissipate waste heat of high-power light emitting diodes.
  • Fig. 1 schematically shows an exploded view of a recessed luminaire 10 having a casing 12, a circuit board 14, a seal in the form of an O-ring seal 16, a cover 18, and a cover ring 20. Also shown is a plug 22 with a cable for supplying power.
  • Fig. 2 shows, in a slightly perspectively tilted sectional view, the luminaire in a mounted state, in which the circuit board 14 is inserted into the casing 12 and abuts on the bottom 24 of the casing.
  • the cover 18 is arranged in front of the circuit board 14, wherein the seal ring 16 is arranged between the casing 12 and the cover 18. Also shown is the cover ring 20.
  • the casing 12 is cup-shaped, having the bottom 24 and a circumference wall or side wall 26 standing away therefrom towards the front side of the luminaire.
  • the casing is substantially round.
  • the side wall 26 is substantially cylindrical.
  • the casing 12 is made of metal, for example, is an aluminium diecast casing.
  • flange portions 28 stand away from the side wall 26 for delimiting an inserting depth when inserting the recessed luminaire 10 into an mounting opening.
  • cooling structures 30, e.g. cooling ribs are formed at the outside of the side wall 26.
  • snap-in contours 40 for locking snap-in pins 42 of the cover 18 are formed projecting from the inside of the side wall 26.
  • alignment contours 44 at the inside of the side wall 26 for interacting with complementary alignment contours 46 at the circumferential edge of the circuit board 14.
  • the round, approximately circular disk shaped circuit board 14 is equipped with light emitting diodes (LEDs) 48 at the front, and is adapted to the cross section of the casing 12.
  • the seal ring 16 rests on a shoulder at the inner side of the circumference wall 26 of the casing 12 in the mounted state.
  • the shoulder forms a sealing face.
  • An opposite sealing face is formed by a ring shaped protrusion projecting from the outside of the cover 18.
  • Fig. 2 further shows the snap-in pin 42, which is in locking engagement with the snap-in contour 40 that projects obliquely downwards.
  • the snap-in pin 42 can deflect inwards and comprises a recess, in which the snap-in contour 40 engages.
  • Multiple snap-in contours 40 and associated snap-in pins 42 are distributedly arranged at the circumference of the casing 12 and the cover 18.
  • the seal 16 seals the cover 18 against the side wall 26, and thereby protects against entry of splash water into the casing 12, when the luminaire 10 is mounted in a mounting opening.
  • the seal ring is of silicone or an other elastomer.
  • the cover 18 also presses the circuit board 14 to the bottom 24 of the casing 12 and thereby provides for a good heat contact for dissipating heat of the light emitting diodes 48 into the casing 12.
  • the circuit board 14 e.g. comprises a metallic heat dissipation structure. In particular, it is a circuit board with aluminium core.
  • the cover 18 comprises a lens unit 50, which is indicated in Fig. 2 in a cross sectional view.
  • the lens unit 50 comprises a lens element 52 in front of each of the light emitting diodes 48.
  • Each lens element 52 has a recess clearance, which is e.g. cylindrical, at the end facing the LED, for coupling light into the surrounding lens element body on the face side and on the circumferential side.
  • the lens element 52 forms a chalice-shaped reflecting contour that expands towards the front, for reflecting light, which is guided in the transparent material of the lens element 52, towards the front side.
  • the lens elements merge into a front side cover plate 54 of the transparent cover 18, which is substantially circular disk-shaped.
  • the cover plate 54 forms the free surface of the lens unit 50 as well as of the cover 18.
  • the cover 18 is integrally formed with the lens unit 50 and the mounting springs 34 as well as the snap-in pins 42, for example of PMMA (polymethylmethacrylate) or PC (polycarbonate).
  • the respective mounting spring 34 projects at the outside from the circumferential edge of the cover plate 54, continuous backwards in a first portion 56, and, further outside, from a back side end obliquely back to the front.
  • the mounting spring 34 has a cross-section that is formed approximately V-shaped. Therein, the first portion 56 forms a first leg of the V and is connected at its end to the cover plate 54 by a short bar.
  • the second portion 58 which obliquely projects outwards, forms the second leg of the V.
  • the mounting spring 34 With its short bar engages around the front side edge of the side wall 26, and the first portion 56 runs towards the backside in the accommodation contour 32 along the side wall 26 and at the outside of the same.
  • the mounting spring 34 is supported by its back side end at the outside of the side wall 26, in particular at the bottom of the accommodation contour 32.
  • the portion 58 that projects obliquely to the front is deflected inwards, such that the luminaire 10 is securely held by the mounting springs 34 in the inner, cylindrical, circumferential wall of the mounting opening 60.
  • the cover ring 20 covers the front edge and, in particular, the flange portions 28 of the casing 12 at the front side, and may be shaped according to the desired design.
  • the cover ring 20 is snap-in lockable to the casing 12 by the snap-in lugs 38, which are distributedly arranged around the opening 62 of the cover ring 20 at the backside of the cover ring 20. This is done by the snap-in lugs 38 being inserted into the accommodation contours 36 and sliding towards the outside over a snap-in projection of the accommodation contour 36, while being flexibly deflected, and engaging the snap-in projection 64 of the accommodation contour 36. This is exemplarily shown in Fig. 2 .
  • the cover ring 20 and the integrated cover plate 54 of the cover 18 approximately lie in one plane.
  • Fig. 3 schematically shows a side view of the recessed luminaire 10, wherein an aperture attachment 66 is mounted in addition to the components already described, which is shown in Fig. 4 in a cross sectional view.
  • the aperture attachment 66 comprises a narrow flange 68 at its outside at its back side end, which flange projects outwards from a ring shaped wall 70.
  • the flange 68 is insertable into an adapted, flat, ring shaped clearance 72 ( Fig. 2 ) at the back side of the cover ring 20, before the cover ring 20 is mounted to the luminaire.
  • the wall 70 projects from the cover ring 20 through the opening 62 to the front.
  • the clearance 72 is access-able through a ring shaped gap between the cover ring 20 and the cover plate 54.
  • the aperture attachment 66 forms an aperture for delimiting the light output of the recessed luminaire 10.
  • the aperture attachment 66 can be formed according to any desired design.
  • the described luminaire has a mounting diameter according to the free cross section of the mounting opening of 58 mm.
  • the mounting depth of the recessed luminaire 10, which is determined by the depth of the casing 12 behind the flange portions 28, is, for example, 15 mm or less, in particular, for example, 13 mm.
  • the cover ring 20, and the optional aperture attachment 66 are, for example, formed of plastics, e.g. polycarbonate or ABS (acrylonitrile-butadiene-styrene).
  • the described luminaire can not only be assembled and mounted in a mounting opening 60 without the use of tools in a particularly easy manner with a few hand movements, wherein the circuit board 14 is used prefabricated with the light emitting diodes 48 and the plug connector. Moreover, the luminaire can also be detached from a furniture without the use of tools, because the electrical connection is done via the plug 22, and because the mounting springs 34 with their free ends are accessible from the front, when the cover ring 20 is detached, and can easily be disengaged from the mounting opening 60. This is due to the accommodation contours 32 for the mounting springs 34 running along the side wall 26, towards the front, up to an open end, where the mounting springs 34 engage around the front edge of the side wall 36.
  • the snap-in pins which are in the inside of the casing 12, may be disengaged from the snap-in contours 40, such that the cover 18 may be detached from the casing 12.

Abstract

Recessed luminaire, in particular for a mounting opening of a furniture board, comprising: a casing (12), a circuit board (14) that supports at least one light emitting diode (48), and a cover (18) formed of a transparent material, wherein the cover (18) comprises a lens unit (50), wherein the casing (12) is adapted for accommodating the circuit board (14) and the lens unit (50), wherein the cover (18) comprises snap-in members (42), by which the cover (18) is lockable to the casing (12), and wherein the cover (18) comprises mounting springs (34) for fixing the recessed luminaire (10) in a mounting opening (60) of a furniture board.

Description

  • The invention relates to a recessed luminaire, comprising a casing, a circuit board that supports at least one light emitting diode, and a cover formed of a transparent material. In particular, the invention relates to such a recessed luminaire for a mounting opening of a furniture board.
  • Recessed luminaires for furnitures boards are known, which are mountable in mounting openings of a furniture board. Usually they are mounted in the furniture board with a luminaire front facing downwards, in order to illuminate an area below the furniture board. For example, such recessed luminaires may be applied to display cabinets, shelves or the like.
  • It is an object of the invention to accomplish a recessed luminaire that may be assembled particularly easily.
  • According to the invention, this object is achieved by a recessed luminaire of the kind mentioned initially, wherein the cover comprises a lens unit, the casing is adapted for accommodating the circuit board and the lens unit, the cover comprises locking members for locking it to the casing, and the cover comprises mounting springs for fixing the recessed luminaire in a mounting opening of a furniture board.
  • As the cover comprises locking members for locking it to the casing, as well as mounting springs for fixing it to the mounting opening, the cover may be fixed by locking it to the casing without the use of tools, after inserting the circuit board into the casing, and, thereby, the mounting springs are provided at the same time. This is particularly advantageous. Firstly, no further mounting member is required for fixing the cover to the casing. Secondly, it is made possible to provide for a rigid casing e.g. of metal, because flexible locking members as well as flexible mounting springs may be provided by the cover, which is, for example, formed of transparent plastics. A metal casing is particularly advantageous, since it allows to dissipate waste heat of high-power light emitting diodes.
  • Useful details and advancements of the invention are indicated in the dependent claims.
  • As preferred embodiment of the invention will now be described in conjunction with the drawings in which:
    • Fig. 1
    is a schematic, perspective exploded view of a recessed luminaire according to the invention;
    Fig. 2
    is a schematic, perspective sectional view of the assembled recessed luminaire;
    Fig. 3
    is a schematic side view of the recessed luminaire in a version having an aperture attachment; and
    Fig. 4
    is a schematic sectional view of the aperture attachment.
  • Fig. 1 schematically shows an exploded view of a recessed luminaire 10 having a casing 12, a circuit board 14, a seal in the form of an O-ring seal 16, a cover 18, and a cover ring 20. Also shown is a plug 22 with a cable for supplying power.
  • Fig. 2 shows, in a slightly perspectively tilted sectional view, the luminaire in a mounted state, in which the circuit board 14 is inserted into the casing 12 and abuts on the bottom 24 of the casing. The cover 18 is arranged in front of the circuit board 14, wherein the seal ring 16 is arranged between the casing 12 and the cover 18. Also shown is the cover ring 20.
  • The casing 12 is cup-shaped, having the bottom 24 and a circumference wall or side wall 26 standing away therefrom towards the front side of the luminaire. The casing is substantially round. The side wall 26 is substantially cylindrical. The casing 12 is made of metal, for example, is an aluminium diecast casing. At the front edge, flange portions 28 stand away from the side wall 26 for delimiting an inserting depth when inserting the recessed luminaire 10 into an mounting opening. Further, cooling structures 30, e.g. cooling ribs, are formed at the outside of the side wall 26.
  • Furthermore, at the outside of the side wall 26, there are formed accommodation contours 32 for mounting springs 34 of the cover 18, which are recessed inwards and which run transverse to the bottom 24, as well as accommodation contours 36 for snap-in lugs 38 of the cover ring 20, at other circumferential positions.
  • Furthermore, snap-in contours 40 for locking snap-in pins 42 of the cover 18 are formed projecting from the inside of the side wall 26.
  • Finally, there are provided alignment contours 44 at the inside of the side wall 26 for interacting with complementary alignment contours 46 at the circumferential edge of the circuit board 14.
  • The round, approximately circular disk shaped circuit board 14 is equipped with light emitting diodes (LEDs) 48 at the front, and is adapted to the cross section of the casing 12. A portion of the circuit board 14, which projects sidewards, supports a plug connector, which is, in the mounted state, arranged in a corresponding opening of the casing 12 and which allows to insert a plug 22 from the outside.
  • As is shown in Fig. 2, the seal ring 16 rests on a shoulder at the inner side of the circumference wall 26 of the casing 12 in the mounted state. The shoulder forms a sealing face. An opposite sealing face is formed by a ring shaped protrusion projecting from the outside of the cover 18.
  • Fig. 2 further shows the snap-in pin 42, which is in locking engagement with the snap-in contour 40 that projects obliquely downwards. The snap-in pin 42 can deflect inwards and comprises a recess, in which the snap-in contour 40 engages. Multiple snap-in contours 40 and associated snap-in pins 42 are distributedly arranged at the circumference of the casing 12 and the cover 18.
  • In the locked state, the seal 16 seals the cover 18 against the side wall 26, and thereby protects against entry of splash water into the casing 12, when the luminaire 10 is mounted in a mounting opening. For example, the seal ring is of silicone or an other elastomer.
  • In the mounted state, the cover 18 also presses the circuit board 14 to the bottom 24 of the casing 12 and thereby provides for a good heat contact for dissipating heat of the light emitting diodes 48 into the casing 12. The circuit board 14 e.g. comprises a metallic heat dissipation structure. In particular, it is a circuit board with aluminium core.
  • In addition to the mounting springs 34 and snap-in pins 42, the cover 18 comprises a lens unit 50, which is indicated in Fig. 2 in a cross sectional view. The lens unit 50 comprises a lens element 52 in front of each of the light emitting diodes 48. Each lens element 52 has a recess clearance, which is e.g. cylindrical, at the end facing the LED, for coupling light into the surrounding lens element body on the face side and on the circumferential side. At the outside, the lens element 52 forms a chalice-shaped reflecting contour that expands towards the front, for reflecting light, which is guided in the transparent material of the lens element 52, towards the front side.
  • The lens elements merge into a front side cover plate 54 of the transparent cover 18, which is substantially circular disk-shaped. The cover plate 54 forms the free surface of the lens unit 50 as well as of the cover 18.
  • The cover 18 is integrally formed with the lens unit 50 and the mounting springs 34 as well as the snap-in pins 42, for example of PMMA (polymethylmethacrylate) or PC (polycarbonate).
  • Multiple mounting springs 34 are distributedly arranged at the circumference of the cover 18. The respective mounting spring 34 projects at the outside from the circumferential edge of the cover plate 54, continuous backwards in a first portion 56, and, further outside, from a back side end obliquely back to the front. The mounting spring 34 has a cross-section that is formed approximately V-shaped. Therein, the first portion 56 forms a first leg of the V and is connected at its end to the cover plate 54 by a short bar. The second portion 58, which obliquely projects outwards, forms the second leg of the V.
  • In the mounted state, the mounting spring 34 with its short bar engages around the front side edge of the side wall 26, and the first portion 56 runs towards the backside in the accommodation contour 32 along the side wall 26 and at the outside of the same. When the mounted luminaire 10 is inserted into a round mounting opening (Fig. 3), the mounting spring 34 is supported by its back side end at the outside of the side wall 26, in particular at the bottom of the accommodation contour 32. The portion 58 that projects obliquely to the front is deflected inwards, such that the luminaire 10 is securely held by the mounting springs 34 in the inner, cylindrical, circumferential wall of the mounting opening 60.
  • The cover ring 20 covers the front edge and, in particular, the flange portions 28 of the casing 12 at the front side, and may be shaped according to the desired design. The cover ring 20 is snap-in lockable to the casing 12 by the snap-in lugs 38, which are distributedly arranged around the opening 62 of the cover ring 20 at the backside of the cover ring 20. This is done by the snap-in lugs 38 being inserted into the accommodation contours 36 and sliding towards the outside over a snap-in projection of the accommodation contour 36, while being flexibly deflected, and engaging the snap-in projection 64 of the accommodation contour 36. This is exemplarily shown in Fig. 2.
  • In the mounted state, the cover ring 20 and the integrated cover plate 54 of the cover 18 approximately lie in one plane.
  • Fig. 3 schematically shows a side view of the recessed luminaire 10, wherein an aperture attachment 66 is mounted in addition to the components already described, which is shown in Fig. 4 in a cross sectional view.
  • The aperture attachment 66 comprises a narrow flange 68 at its outside at its back side end, which flange projects outwards from a ring shaped wall 70. The flange 68 is insertable into an adapted, flat, ring shaped clearance 72 (Fig. 2) at the back side of the cover ring 20, before the cover ring 20 is mounted to the luminaire. Therein, the wall 70 projects from the cover ring 20 through the opening 62 to the front. In this region, the clearance 72 is access-able through a ring shaped gap between the cover ring 20 and the cover plate 54. For example, the aperture attachment 66 forms an aperture for delimiting the light output of the recessed luminaire 10. The aperture attachment 66 can be formed according to any desired design.
  • For example, the described luminaire has a mounting diameter according to the free cross section of the mounting opening of 58 mm. The mounting depth of the recessed luminaire 10, which is determined by the depth of the casing 12 behind the flange portions 28, is, for example, 15 mm or less, in particular, for example, 13 mm.
  • The cover ring 20, and the optional aperture attachment 66, are, for example, formed of plastics, e.g. polycarbonate or ABS (acrylonitrile-butadiene-styrene).
  • The described luminaire can not only be assembled and mounted in a mounting opening 60 without the use of tools in a particularly easy manner with a few hand movements, wherein the circuit board 14 is used prefabricated with the light emitting diodes 48 and the plug connector. Moreover, the luminaire can also be detached from a furniture without the use of tools, because the electrical connection is done via the plug 22, and because the mounting springs 34 with their free ends are accessible from the front, when the cover ring 20 is detached, and can easily be disengaged from the mounting opening 60. This is due to the accommodation contours 32 for the mounting springs 34 running along the side wall 26, towards the front, up to an open end, where the mounting springs 34 engage around the front edge of the side wall 36.
  • Moreover, at the back side of the casing 12, there are provided openings 74 in front of the ends of the snap-in pins 42 in the region of the snap-in contours 40. Thereby, the snap-in pins, which are in the inside of the casing 12, may be disengaged from the snap-in contours 40, such that the cover 18 may be detached from the casing 12.

Claims (9)

  1. Recessed luminaire, in particular for a mounting opening of a furniture board, comprising:
    - a casing (12),
    - a circuit board (14) that supports at least one light emitting diode (48), and
    - a cover (18) formed of a transparent material,
    wherein the cover (18) comprises a lens unit (50),
    wherein the casing (12) is adapted for accommodating the circuit board (14) and the lens unit (50),
    wherein the cover (18) comprises snap-in members (42), by which the cover is lockable to the casing (12), and
    wherein the cover (18) comprises mounting springs (34) for fixing the recessed luminaire (10) in a mounting opening (60) of a furniture board.
  2. Recessed luminaire according to claim 1, wherein the cover (18) is adapted for arranging the lens unit (50) in the casing (12) in a position in which the cover (18) is locked to the casing, in which position the mounting springs (34) are arranged external to a side wall of the casing (12).
  3. Recessed luminaire according to claim 1 or 2, wherein the mounting springs (34) each comprise a first portion (56) running from a front side portion of the cover (18) towards the back side, and a second portion (58) running further outside back to the front side, wherein a clearance for accommodating a portion of a side wall (26) of the casing (12) is formed between the respective mounting spring (34) and the lens unit (50).
  4. Recessed luminaire according to any one of the preceding claims, wherein the cover (18) is adapted for holding, in a position in which it is locked to the casing (12), the circuit board (14) to rest on a bottom (24) of the casing (12).
  5. Recessed luminaire according to any one of the preceding claims, wherein the casing (12) is of metal and comprises cooling structures (30) at its outside.
  6. Recessed luminaire according to any one of the preceding claims, wherein the casing (12) is an integrally cast metal diecast casing.
  7. Recessed luminaire according to any one of the preceding claims, further comprising a cover ring (20), which comprises snap-in elements (38) that project at the back side, and which are adapted for locking the cover ring (20) to an outside of a side wall (26) of the casing (12).
  8. Recessed luminaire according to claim 7, wherein the casing (12) comprises a side wall (26) that comprises accommodating contours (32; 36) for the mounting springs (34) and for the snap-in elements (38) of the cover ring (20) at the outside of the side wall (26), and which accommodating contours are recessed towards the inside.
  9. Recessed luminaire according to claim 7 or 8, further comprising an aperture attachment (66) adapted for engaging an edge of an opening (62) of the cover ring (22) at the back side thereof, wherein the aperture attachment (66) projects from the cover ring (20) through the opening (62) towards the front side.
EP14154088.0A 2013-02-12 2014-02-06 Recessed luminaire Active EP2765351B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202013100626.2U DE202013100626U1 (en) 2013-02-12 2013-02-12 recessed light

Publications (2)

Publication Number Publication Date
EP2765351A1 true EP2765351A1 (en) 2014-08-13
EP2765351B1 EP2765351B1 (en) 2016-04-20

Family

ID=50068849

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14154088.0A Active EP2765351B1 (en) 2013-02-12 2014-02-06 Recessed luminaire

Country Status (3)

Country Link
EP (1) EP2765351B1 (en)
CN (2) CN203642012U (en)
DE (1) DE202013100626U1 (en)

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DE102016114643A1 (en) * 2016-08-08 2018-02-08 Ledvance Gmbh LIGHTING DEVICE WITH LENS
US20180066815A1 (en) * 2015-03-13 2018-03-08 Hangzhou Hpwinner Opto Corporation Light Emitting Diode Lighting Device And Assembly Method Thereof
CN112856280A (en) * 2021-01-13 2021-05-28 上海光联照明有限公司 Point light source buckle type lamp structure for curtain wall and installation method of lamp

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US10704770B2 (en) * 2018-09-11 2020-07-07 CP IP Holdings Limited Lighting arrangement
CN109185839B (en) * 2018-09-13 2020-04-10 江门市泰坦尼照明电器有限公司 Mounting structure of lamps and lanterns
CN210153738U (en) * 2019-08-13 2020-03-17 苏州欧普照明有限公司 Assembly component and lamp
CN218954699U (en) * 2022-06-20 2023-05-02 法雷奥市光（中国）车灯有限公司 Lighting module, vehicle lamp and motor vehicle

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Publication number Priority date Publication date Assignee Title
JP2016081571A (en) * 2014-10-09 2016-05-16 パナソニックＩｐマネジメント株式会社 Lighting fitting
US20180066815A1 (en) * 2015-03-13 2018-03-08 Hangzhou Hpwinner Opto Corporation Light Emitting Diode Lighting Device And Assembly Method Thereof
US10337718B2 (en) * 2015-03-13 2019-07-02 Hangzhou Hpwinner Opto Corporation Light emitting diode lighting device and assembly method thereof
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US11054089B2 (en) 2016-08-08 2021-07-06 Ledvance Gmbh Lighting device with lens
CN112856280A (en) * 2021-01-13 2021-05-28 上海光联照明有限公司 Point light source buckle type lamp structure for curtain wall and installation method of lamp
CN112856280B (en) * 2021-01-13 2023-03-03 上海光联照明有限公司 Point light source buckle type lamp structure for curtain wall and installation method of lamp

Also Published As

Publication number Publication date
EP2765351B1 (en) 2016-04-20
CN203642012U (en) 2014-06-11
CN103982835B (en) 2018-06-26
CN103982835A (en) 2014-08-13
DE202013100626U1 (en) 2014-05-13

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