EP3244124A1 - Leuchte und flächenabdeckungsanordnung - Google Patents

Leuchte und flächenabdeckungsanordnung Download PDF

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Publication number
EP3244124A1
EP3244124A1 EP16169267.8A EP16169267A EP3244124A1 EP 3244124 A1 EP3244124 A1 EP 3244124A1 EP 16169267 A EP16169267 A EP 16169267A EP 3244124 A1 EP3244124 A1 EP 3244124A1
Authority
EP
European Patent Office
Prior art keywords
luminaire
elongate
inclining
trench
surface portion
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
EP16169267.8A
Other languages
English (en)
French (fr)
Inventor
designation of the inventor has not yet been filed The
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.)
Signify Holding BV
Original Assignee
Philips Lighting Holding BV
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 Philips Lighting Holding BV filed Critical Philips Lighting Holding BV
Priority to EP16169267.8A priority Critical patent/EP3244124A1/de
Publication of EP3244124A1 publication Critical patent/EP3244124A1/de
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/505—Cooling arrangements characterised by the adaptation for cooling of specific components of reflectors
    • 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
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/508—Cooling arrangements characterised by the adaptation for cooling of specific components of electrical circuits
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • 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
    • F21Y2113/00—Combination of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the luminaire housing consists of the sheet metal
  • the luminaire may further comprise a support frame comprising a recess having opposing elongate recess edges, wherein an edge of each second inclining surface portion is secured on one of said opposing elongate recess edges to facilitate the mounting of the sheet metal housing in this support frame.
  • the support frame may be a stamped sheet metal frame, in which case the support frame may be easily manufactured in a cost-effective manner.
  • the trench 100 Central to the housing 100 is a trench 110 for housing the one or more driver circuits 150, ballasts and the like for the SSL elements in the luminaire 1.
  • the trench 100 typically has an elongate shape in which an elongate trench floor 112 is flanked by opposing elongate side walls 111 extending from opposing elongate edges of the trench floor 112.
  • the opposing elongate side walls 111 extend perpendicularly from the trench floor 112 (i.e. under an angle of 90°) to give the trench 110 a U-shaped profile (with a flat trench floor 112).
  • the angle between the trench floor 112 and each of the elongate side walls 111 may be larger than 90° to give the trench 110 a V-shaped profile (with a flat trench floor 112).
  • the angle between the trench floor 112 and each of the elongate side walls 111 may be in the range of 90°-120°.
  • Each optical cavity 120 is further delimited by a second inclining elongate surface portion 123 extending from the first inclining elongate surface portion.
  • this is intended to mean that this surface portion extends from the first inclining elongate surface portion 121 under an angle of greater than 90°. Consequently, due to the inclining nature of the first inclining surface portion 121 and the second inclining surface portion 123, each optical cavity 120 may have a trapezoidal cross-section.
  • Each optical cavity houses a plurality of SSL elements 141 mounted on the first inclining elongate surface portion 121 such that the SSL elements 141 face the diffuser 130, i.e. have the optical axis of the luminous distribution they produce extend through the diffuser 130.
  • Any suitable type of SSL element may be used for this purpose, e.g. white LEDs, coloured LEDs arranged to combine their luminous output to produce white light, coloured LEDs arranged to produce a luminous output of a particular colour, and so on.
  • Such SSL elements 141 may be individually addressable such that the luminaire 1 may be configured to produce different lighting effects, e.g. different types of mood lighting, or may be addressable as a single group of SSL elements, for example in case of a luminaire 1 arranged to produce a single type of luminous output only, e.g. white light.
  • the SSL elements 141 may be mounted on a carrier 140, such as an elongate PCB or strip.
  • the SSL elements 141 for example may be soldered to such a carrier 140.
  • This has the advantage that only the carrier 140 needs to be secured, e.g. screwed or adhered, against the first inclining elongate surface portion 121.
  • a particularly suitable embodiment of such an arrangement is a so-called Level 2 assembly, in which a strip 141 carrying the SSL elements 141 may be glued to a PCB such as a MCPCB. As is well-known per se, this simplifies wiring requirements for the SSL elements 141, thereby further reducing the cost of the luminaire 1.
  • each optical cavity 120 preferably are reflective to ensure that light directed by the SSL elements 141 onto these inner surfaces is reflected back into the optical cavity such that eventually this light can escape the optical cavity 120 through the diffuser 130, thereby minimizing light loss and optimizing the luminous efficiency of the optical cavity 120.
  • at least the elongate side wall 111 and the second inclining elongate surface portion 123 facing the optical cavity 120 are reflective although in some embodiments the first inclining elongate surface portion facing the optical cavity 120 may also be reflective.
  • These surfaces may be made reflected in any suitable manner, e.g. by application of a reflective film or coating. In an embodiment, these surfaces may be painted with white paint in order to give these surfaces the desired reflectivity in a cost-effective manner.
  • each optical cavity 120 produces a widely spread luminous output, which gives the luminaire 1 the appearance of having a large area light exit window (well beyond the combined areas of the diffusers 130), which gives the luminaire 1 an appearance that resembles the appearance of conventional luminaires, e.g. troffers comprising fluorescent tubes as light engines.
  • a normal 122 to first inclining elongate surface portion 121 is oriented under an angle ⁇ ranging from 20-40° relative to an edge of the diffuser 130 proximal to the elongate sidewall as shown in FIG. 2 to achieve a desired optical performance of the optical cavity 120.
  • Each optical cavity 120 may have a width w ranging from 50-100 mm and a depth d ranging from 30-60 mm in selected embodiments.
  • the sheet metal housing 100 may further comprise mounting edges 13 along the respective elongate edges of the inclined reflector panels 11 distal to the optical cavities 120 for mounting the luminaire 1 into a support structure.
  • Such mounting edges 13 may have any suitable shape as will be immediately apparent to the person skilled in the art.
  • the inclined elongate reflectors 11 and mounting edges 13 may form part of a mounting frame 10, which for example may be formed as a sheet metal mounting frame 10 by stamping a sheet metal.
  • the support frame 10 comprising a recess 12 having opposing elongate recess edges 15.
  • the previously described intermediate elongate edges 125 of the sheet metal housing 100 are terminal edges of this housing adapted to engage with, i.e. to be mounted on, respective elongate recess edges 15 to secure the sheet metal housing 100 in the support frame 10, e.g. using screws, clips, staples or the like.
  • each inclined reflector panel 11 extends between one of the elongate recess edges 15 and an opposing elongate support frame mounting edge 13.
  • Such male and female mating portions may further comprise a hole or the like, which holes align when the male mating portion is correctly inserted into the female mating portion such that the first sheet metal module 101 and the second sheet metal module 103 may be secured together by extending a screw through the aligned holes and by subsequently engaging a bolt or the like with the screw to keep the first sheet metal module 101 and the second sheet metal module 103 together.
  • such holes may be used for soldering or welding the respective sheet metal modules together although it should be understood that this may also be achieved without the use of such holes, e.g. by gluing, soldering or welding the respective elongate edges of these modules together.
  • the maximum operating temperature of the driver circuit 150 was observed to be 37°C whereas typical driver specifications require an operating temperature of below 75°C. It can therefore be expected that the luminaire 1 according to embodiments of the present invention will have excellent lifetime expectancy well in excess of 50,000 hours.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP16169267.8A 2016-05-12 2016-05-12 Leuchte und flächenabdeckungsanordnung Pending EP3244124A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16169267.8A EP3244124A1 (de) 2016-05-12 2016-05-12 Leuchte und flächenabdeckungsanordnung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16169267.8A EP3244124A1 (de) 2016-05-12 2016-05-12 Leuchte und flächenabdeckungsanordnung

Publications (1)

Publication Number Publication Date
EP3244124A1 true EP3244124A1 (de) 2017-11-15

Family

ID=56024111

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16169267.8A Pending EP3244124A1 (de) 2016-05-12 2016-05-12 Leuchte und flächenabdeckungsanordnung

Country Status (1)

Country Link
EP (1) EP3244124A1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6092913A (en) * 1998-03-26 2000-07-25 Renova Technologies, Llc Fluorescent light fixture
US20110058358A1 (en) * 2009-07-28 2011-03-10 Soo Kim Dong Lighting device
WO2012030387A2 (en) 2010-08-31 2012-03-08 Cree, Inc. Troffer-style fixture
US20130279159A1 (en) * 2012-04-23 2013-10-24 Cree, Inc. Direct aisle lighter
US20140168955A1 (en) * 2012-12-14 2014-06-19 David Gershaw Led module for light distribution
US9016892B1 (en) * 2014-10-08 2015-04-28 Orion Energy Systems, Inc. Light fixture with tool-less interchangeable lenses
US9322518B1 (en) * 2012-12-06 2016-04-26 MaxLite, Inc. Troffer-based LED light fixture and retrofitting method using same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6092913A (en) * 1998-03-26 2000-07-25 Renova Technologies, Llc Fluorescent light fixture
US20110058358A1 (en) * 2009-07-28 2011-03-10 Soo Kim Dong Lighting device
WO2012030387A2 (en) 2010-08-31 2012-03-08 Cree, Inc. Troffer-style fixture
US20130279159A1 (en) * 2012-04-23 2013-10-24 Cree, Inc. Direct aisle lighter
US9322518B1 (en) * 2012-12-06 2016-04-26 MaxLite, Inc. Troffer-based LED light fixture and retrofitting method using same
US20140168955A1 (en) * 2012-12-14 2014-06-19 David Gershaw Led module for light distribution
US9016892B1 (en) * 2014-10-08 2015-04-28 Orion Energy Systems, Inc. Light fixture with tool-less interchangeable lenses

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