EP0828114A2 - Luminaire for line illumination - Google Patents

Luminaire for line illumination Download PDF

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Publication number
EP0828114A2
EP0828114A2 EP97202637A EP97202637A EP0828114A2 EP 0828114 A2 EP0828114 A2 EP 0828114A2 EP 97202637 A EP97202637 A EP 97202637A EP 97202637 A EP97202637 A EP 97202637A EP 0828114 A2 EP0828114 A2 EP 0828114A2
Authority
EP
European Patent Office
Prior art keywords
reflector
luminaire
coupling member
light carrier
top surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP97202637A
Other languages
German (de)
French (fr)
Other versions
EP0828114A3 (en
Inventor
Hans Hermann Jämmrich
Bernd Stigrot
Wolfgang Henze
c/o Internationaal Octrooibureau Gert Winkler
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.)
Philips Intellectual Property and Standards GmbH
Koninklijke Philips NV
Original Assignee
Philips Corporate Intellectual Property GmbH
Philips Patentverwaltung GmbH
Koninklijke Philips Electronics NV
Philips Electronics NV
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 Corporate Intellectual Property GmbH, Philips Patentverwaltung GmbH, Koninklijke Philips Electronics NV, Philips Electronics NV filed Critical Philips Corporate Intellectual Property GmbH
Priority to EP97202637A priority Critical patent/EP0828114A3/en
Publication of EP0828114A2 publication Critical patent/EP0828114A2/en
Publication of EP0828114A3 publication Critical patent/EP0828114A3/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/005—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips for several lighting devices in an end-to-end arrangement, i.e. light tracks
    • 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
    • F21V15/015—Devices for covering joints between adjacent lighting devices; End coverings
    • 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
    • F21V17/007—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for shipment or storage
    • 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
    • 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

Definitions

  • the invention relates to a luminaire for line illumination, comprising:
  • Such a luminaire is known from DE-U-93 20 823.
  • a large number of luminaires may be used in a row in one longitudinal direction in the case of line illumination.
  • the reflector of the known luminaire has transverse walls at its ends, perpendicular to the longitudinal direction of the reflector, which make that the reflector forms a trough-shaped body.
  • the reflector in itself is comparatively voluminous already. Owing to its shape, it cannot be nested together with other reflectors, so that the luminaires for line illumination together occupy a very large volume in shipment. This is a disadvantage. This disadvantage could be eliminated by means of reflectors which only comprise a top wall and side walls. Given such reflectors in line illumination device, however, the device would also radiate light sideways because this light would pass the boundaries between the ends of each pair of adjoining reflectors. This is undesirable.
  • this object is achieved in that a coupling member is present at the first end of the reflector only, is fastened to said end, overlaps at least the side surfaces, and extends along the extended direction of the reflector so as to overlap the second end of an adjoining reflector.
  • the coupling member is able to overlap the adjoining reflector at the outside thereof, inter alia for hiding the second end of this adjoining reflector from view.
  • the luminaire not only has the advantages that the reflectors can be nested together for shipment and storage, so that a comparatively large number together occupy a comparatively small volume, that it is optically coupled when placed in line with other reflectors, i.e. that the line illumination between the ends of the reflectors is at least substantially optically closed when viewed sideways, and that it keeps the reflectors mutually aligned longitudinally, but also that a reflector of a luminaire can be removed from a central position in a line of luminaires while adjoining luminaires remain intact.
  • a light carrier may be removed from a line of luminaires, for example for purposes of repair, for example for replacing a ballast of a tubular fluorescent lamp.
  • the reflector can be removed in that the reflector is detached and taken from the line with its second end first, if this second end is overlapped at its outside by the coupling member of the adjoining reflector.
  • the coupling member may have a connecting portion which extends, for example, alongside the recess for the means for accommodating a lamp in the reflector and interconnects portions of the coupling member which each cooperate with a respective side surface of the reflector.
  • the coupling member prefferably has separate portions which each cooperate with a respective side surface of the reflector. These portions are then one another's mirrored images.
  • the coupling member has a transverse wall which closes off the reflector at its first end.
  • the coupling member has a groove into which the first end of the reflector extends.
  • the first end is then overlapped by the coupling member at the outside, as is the second end of an adjoining reflector, so that both are hidden from view.
  • the luminaire may be designed for one or several, for example parallel, tubular fluorescent lamps, or for, for example, one or several fluorescent lamps having parallel lamp portions such as single-ended capped compact lamps.
  • the luminaire may thus provide a line or strip illumination.
  • the trunk may have a length such that it can accommodate several light carriers.
  • the luminaire for line illumination comprises a light carrier 1 with a longitudinal direction and with an outer surface 10 which is provided with means 11 for accommodating an electric lamp, a tubular fluorescent lamp in the Figure.
  • the light carrier has means 12 for fastering it detachably to a carrier or trunk 2.
  • the luminaire in addition has such a trunk 2 to which the light carrier 1 can be detachably fastened.
  • a reflector 3 with an inner side 30 for concentrating light generated by an accommodated lamp into a beam and with an outer side 31 forms part of the luminaire.
  • the reflector 3 has a top surface 32 and side surfaces 33 integral therewith, extending in the longitudinal direction of the light carrier 1, and each having a U-shaped flanged longitudinal rim 34.
  • the side surfaces 33 come closer together as they approach the top surface 32.
  • the reflector 3 has a first 35 and a second end 36 and can be fastened with the outer side 31 of its top surface 32 against the outer surface 10 of the light carrier 1.
  • the reflector is provided with a recess 37 in each end 35, 36 of its top surface 32 for the means 11 for accommodating an electric lamp.
  • the reflector 3 has slotted openings 29 in the top surface 32 through which tongues can grip, which tongues in the luminaire shown are present at the outer surface 10 of the light carrier 1, forming part of the means 12 thereof for detachable fastening to the trunk 2.
  • the reflector 3 is detached from the light carrier 1 in that said tongues are pressed towards one another, so that they can pass through the relevant opening 29.
  • the luminaire has a coupling member 4 at the first end 35 of the reflector 3 only, which coupling member 4 is fastened to the first end 35 and overlaps at least the side surfaces 33.
  • the coupling member extends along the extended direction of the reflector 3 so as to be able to overlap the second end 36 of an adjoining reflector 3, at the outside 31 thereof in the embodiment shown.
  • the coupling member 4 bounds a transverse wall 40 which closes off the reflector 3 at its first end 35.
  • the coupling member 4 projects with a first portion 41 thereof into the reflector 3 at the first end 35 and grips with barbed hooks 42 into windows 38 thereof, see Fig. 1, and with barbed hooks 42' into windows 38'.
  • the coupling member 4 has a groove 43, see also Fig. 3, into which the first end 35 projects.
  • the coupling member 4 overlaps the reflector 3 also over a portion of the top surface 32 of the latter.
  • the coupling member 4 may overlap with a second portion 44, which is wider than the first portion 41, the second end 36 of the adjoining reflector at the outer side thereof.
  • the coupling member 4 has separate portions 4', 4'' which are capable of cooperating each with a respective side surface 33 of the reflector 3.
  • the portions 4', 4'' are one another's mirrored images.
  • a modified version in which these portions are coupled by means of a connecting portion 39 is shown in broken lines.
  • Fig. 5 reflectors 3, 3' have been nested together in a stack with interposed buffers 5 for storage and transport, so that they occupy a comparatively small volume and are nevertheless protected from damage.
  • the buffers 5 may be made, for example, from polystyrene.

Abstract

The luminaire for line-illumination has a light carrier (1) having means (11) to carry an electric lamp, a trunk shaped carrier (2) to which the light carrier (1) can be mounted, and a reflector (3) for beaming the light generated by a lamp. The reflector (3) has a first (35) and a second end (36), and a coupling member (4) exclusively at its first end (35). The coupling member (4) is fastened to the first end (35) and able to overlap the side faces (33) of the reflector of a neighbouring luminaire.

Description

The invention relates to a luminaire for line illumination, comprising:
  • a light carrier with a longitudinal direction, with an outer surface which is provided with means for accommodating an electric lamp, and with means for detachably fastening said light carrier to a trunk;
  • a trunk to which the light carrier is detachably fastened;
  • a reflector with an inner side for concentrating light generated by an accommodated lamp into a beam and with an outer side,
  • which reflector has a top surface and integral therewith side surfaces extending in the longitudinal direction of the light carrier and each having a U-shaped flanged longitudinal rim, said side surfaces coming closer together as they approach the top surface, and
  • which reflector has a first and a second end, can be fastened with the outer side of its top surface against the outer surface of the light carrier, and is provided at each end of its top surface with a recess for the means for accommodating an electric lamp.
    • Such a luminaire is known from DE-U-93 20 823.
    A large number of luminaires may be used in a row in one longitudinal direction in the case of line illumination.
    The reflector of the known luminaire has transverse walls at its ends, perpendicular to the longitudinal direction of the reflector, which make that the reflector forms a trough-shaped body. The reflector in itself is comparatively voluminous already. Owing to its shape, it cannot be nested together with other reflectors, so that the luminaires for line illumination together occupy a very large volume in shipment. This is a disadvantage. This disadvantage could be eliminated by means of reflectors which only comprise a top wall and side walls. Given such reflectors in line illumination device, however, the device would also radiate light sideways because this light would pass the boundaries between the ends of each pair of adjoining reflectors. This is undesirable.
    It is an object of the invention to provide a luminaire for line illumination of the kind described in the opening paragraph whose reflector can be nested together with similar reflectors, while the radiation of light across the ends of two adjoining reflectors is counteracted in the line illumination device.
    According to the invention, this object is achieved in that a coupling member is present at the first end of the reflector only, is fastened to said end, overlaps at least the side surfaces, and extends along the extended direction of the reflector so as to overlap the second end of an adjoining reflector.
    It is favorable when the coupling member is able to overlap the adjoining reflector at the outside thereof, inter alia for hiding the second end of this adjoining reflector from view.
    The luminaire not only has the advantages that the reflectors can be nested together for shipment and storage, so that a comparatively large number together occupy a comparatively small volume, that it is optically coupled when placed in line with other reflectors, i.e. that the line illumination between the ends of the reflectors is at least substantially optically closed when viewed sideways, and that it keeps the reflectors mutually aligned longitudinally, but also that a reflector of a luminaire can be removed from a central position in a line of luminaires while adjoining luminaires remain intact. When a reflector has been removed, a light carrier may be removed from a line of luminaires, for example for purposes of repair, for example for replacing a ballast of a tubular fluorescent lamp. The reflector can be removed in that the reflector is detached and taken from the line with its second end first, if this second end is overlapped at its outside by the coupling member of the adjoining reflector.
    The coupling member may have a connecting portion which extends, for example, alongside the recess for the means for accommodating a lamp in the reflector and interconnects portions of the coupling member which each cooperate with a respective side surface of the reflector.
    It is alternatively possible for the coupling member to have separate portions which each cooperate with a respective side surface of the reflector. These portions are then one another's mirrored images.
    In a special embodiment, the coupling member has a transverse wall which closes off the reflector at its first end. In this embodiment, the reflector together with the coupling member of the adjoining luminaire in a light line, at the second end of the reflector, forms a space which is laterally closed in four directions for the lamp of the relevant luminaire.
    In a favorable embodiment, the coupling member is made of synthetic resin such as, for example, thermoplastic synthetic resin, for example a synthetic resin charged with powder, such as quartz powder, or with fibers, such as glass fibers, for example a copolymer of acrylonitrile, butadiene and styrene. It is favorable when the coupling member grips into the reflector at the first end. The coupling member may then grip into the flanged longitudinal rim for a sturdy fastening. The coupling member may fix itself in the first end in that it has, for example, barbed hooks or resilient tongues which have been snapped into mating windows in the reflector and retain themselves therein.
    It is favorable when the coupling member has a groove into which the first end of the reflector extends. The first end is then overlapped by the coupling member at the outside, as is the second end of an adjoining reflector, so that both are hidden from view.
    The luminaire may be designed for one or several, for example parallel, tubular fluorescent lamps, or for, for example, one or several fluorescent lamps having parallel lamp portions such as single-ended capped compact lamps. The luminaire may thus provide a line or strip illumination.
    The trunk may have a length such that it can accommodate several light carriers.
    An embodiment of the luminaire according to the invention is shown in the drawings, in which corresponding components have been given the same reference numerals each time. In the drawings:
  • Fig. 1 is an exploded view of the luminaire;
  • Fig. 2 shows the coupling member of Fig. 1 in perspective view;
  • Fig. 3 is a cross-section taken on the line III-III in Fig. 2;
  • Fig. 4 shows a second embodiment of the coupling member; and
  • Fig. 5 is a longitudinal sectional view of a number of stacked reflectors of Fig. 1.
    • In Fig. 1, the luminaire for line illumination comprises a light carrier 1 with a longitudinal direction and with an outer surface 10 which is provided with means 11 for accommodating an electric lamp, a tubular fluorescent lamp in the Figure. The light carrier has means 12 for fastering it detachably to a carrier or trunk 2. The luminaire in addition has such a trunk 2 to which the light carrier 1 can be detachably fastened. A reflector 3 with an inner side 30 for concentrating light generated by an accommodated lamp into a beam and with an outer side 31 forms part of the luminaire. The reflector 3 has a top surface 32 and side surfaces 33 integral therewith, extending in the longitudinal direction of the light carrier 1, and each having a U-shaped flanged longitudinal rim 34. The side surfaces 33 come closer together as they approach the top surface 32. The reflector 3 has a first 35 and a second end 36 and can be fastened with the outer side 31 of its top surface 32 against the outer surface 10 of the light carrier 1. The reflector is provided with a recess 37 in each end 35, 36 of its top surface 32 for the means 11 for accommodating an electric lamp.
    The reflector 3 has slotted openings 29 in the top surface 32 through which tongues can grip, which tongues in the luminaire shown are present at the outer surface 10 of the light carrier 1, forming part of the means 12 thereof for detachable fastening to the trunk 2. The reflector 3 is detached from the light carrier 1 in that said tongues are pressed towards one another, so that they can pass through the relevant opening 29.
    The luminaire has a coupling member 4 at the first end 35 of the reflector 3 only, which coupling member 4 is fastened to the first end 35 and overlaps at least the side surfaces 33. The coupling member extends along the extended direction of the reflector 3 so as to be able to overlap the second end 36 of an adjoining reflector 3, at the outside 31 thereof in the embodiment shown.
    The coupling member 4, see Fig. 2, bounds a transverse wall 40 which closes off the reflector 3 at its first end 35. The coupling member 4 projects with a first portion 41 thereof into the reflector 3 at the first end 35 and grips with barbed hooks 42 into windows 38 thereof, see Fig. 1, and with barbed hooks 42' into windows 38'. The coupling member 4 has a groove 43, see also Fig. 3, into which the first end 35 projects. In Fig. 1, but cf. also Fig. 2, the coupling member 4 overlaps the reflector 3 also over a portion of the top surface 32 of the latter. The coupling member 4 may overlap with a second portion 44, which is wider than the first portion 41, the second end 36 of the adjoining reflector at the outer side thereof.
    In Fig. 4, the coupling member 4 has separate portions 4', 4'' which are capable of cooperating each with a respective side surface 33 of the reflector 3. The portions 4', 4'' are one another's mirrored images. A modified version in which these portions are coupled by means of a connecting portion 39 is shown in broken lines.
    In Fig. 5, reflectors 3, 3' have been nested together in a stack with interposed buffers 5 for storage and transport, so that they occupy a comparatively small volume and are nevertheless protected from damage. The buffers 5 may be made, for example, from polystyrene.

    Claims (6)

    1. A luminaire for line illumination, comprising:
      a light carrier (1) with a longitudinal direction, with an outer surface (10) which is provided with means (11) for accommodating an electric lamp, and with means (12) for detachably fastening said light carrier to a trunk (2);
      a trunk (2) to which the light carrier (1) is detachably fastened;
      a reflector (3) with an inner side (30) for concentrating light generated by an accommodated lamp into a beam, and with an outer side (31),
      which reflector (3) has a top surface (32) and integral therewith side surfaces (33) extending in the longitudinal direction of the light carrier (1) and each having a U-shaped flanged longitudinal rim (34), said side surfaces (33) coming closer together as they approach the top surface (32), and
      which reflector (3) has a first (35) and a second end (36), can be fastened by the outer side (31) of its top surface (32) against the outer surface (10) of the light carrier (1), and is provided at each end (35, 36) of its top surface (32) with a recess (37) for the means (11) for accommodating an electric lamp,
         characterized in that a coupling member (4) is present at the first end (35) of the reflector (3) only, is fastened to said first end (35), overlaps at least the side surfaces (33), and extends along the extended direction of the reflector (3) so as to overlap the second end (36) of an adjoining reflector (3).
    2. A luminaire as claimed in Claim 1, characterized in that the coupling member (4) is able to extend around the second end (36) of an adjoining reflector (3) so as to overlap this at the outer side (31) thereof.
    3. A luminaire as claimed in Claim 1 or 2, characterized in that the coupling member (4) has separate portions (4', 4'') which each cooperate with a respective side surface (33) of the reflector (3).
    4. A luminaire as claimed in Claim 1 or 2, characterized in that the coupling member (4) bounds a transverse wall (40) which closes off the reflector (3) at the first end (35) thereof.
    5. A luminaire as claimed in Claim 1, 2, 3 or 4, characterized in that the coupling member (4) projects into the reflector (3) at the first end (35) and grips with barbed hooks (42) into windows (38) of said reflector.
    6. A luminaire as claimed in Claim 2, characterized in that the coupling member (4) projects into the reflector (3) at the first end (35) and has a groove (41) into which the first end (35) projects.
    EP97202637A 1996-09-05 1997-08-28 Luminaire for line illumination Withdrawn EP0828114A3 (en)

    Priority Applications (1)

    Application Number Priority Date Filing Date Title
    EP97202637A EP0828114A3 (en) 1996-09-05 1997-08-28 Luminaire for line illumination

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    EP96202473 1996-09-05
    EP96202473 1996-09-05
    EP97202637A EP0828114A3 (en) 1996-09-05 1997-08-28 Luminaire for line illumination

    Publications (2)

    Publication Number Publication Date
    EP0828114A2 true EP0828114A2 (en) 1998-03-11
    EP0828114A3 EP0828114A3 (en) 1998-08-12

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP97202637A Withdrawn EP0828114A3 (en) 1996-09-05 1997-08-28 Luminaire for line illumination

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    Cited By (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP1045200A1 (en) * 1999-04-13 2000-10-18 Siteco Beleuchtungstechnik GmbH Arrangement for a releasable connection of luminaires or parts thereof
    EP1267119A2 (en) * 2001-06-11 2002-12-18 Zumtobel Staff GmbH Lamp, especially built-on lamp
    DE202008013973U1 (en) * 2008-10-20 2010-03-04 Zumtobel Lighting Gmbh Trunking system with closed light exit opening
    WO2014045164A1 (en) 2012-09-21 2014-03-27 Koninklijke Philips N.V. A led based line illumination luminaire and system

    Citations (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE9320823U1 (en) 1993-04-20 1995-02-16 Siemens Ag Quick lock for luminaire inserts

    Family Cites Families (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US2531232A (en) * 1947-01-14 1950-11-21 Miller Co Fluorescent lighting fixture
    DE8628045U1 (en) * 1986-10-21 1986-12-18 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
    DE4300415C2 (en) * 1993-01-09 1998-04-09 Trilux Lenze Gmbh & Co Kg Reflector connector for a light band

    Patent Citations (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE9320823U1 (en) 1993-04-20 1995-02-16 Siemens Ag Quick lock for luminaire inserts

    Cited By (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP1045200A1 (en) * 1999-04-13 2000-10-18 Siteco Beleuchtungstechnik GmbH Arrangement for a releasable connection of luminaires or parts thereof
    EP1267119A2 (en) * 2001-06-11 2002-12-18 Zumtobel Staff GmbH Lamp, especially built-on lamp
    EP1267119A3 (en) * 2001-06-11 2006-06-07 Zumtobel Staff GmbH Lamp, especially built-on lamp
    DE202008013973U1 (en) * 2008-10-20 2010-03-04 Zumtobel Lighting Gmbh Trunking system with closed light exit opening
    WO2014045164A1 (en) 2012-09-21 2014-03-27 Koninklijke Philips N.V. A led based line illumination luminaire and system
    US9470375B2 (en) 2012-09-21 2016-10-18 Koninklijke Philips N.V. LED based line illumination luminaire and system
    RU2639890C2 (en) * 2012-09-21 2017-12-25 Филипс Лайтинг Холдинг Б.В. Led lighting device and led linear lighting system

    Also Published As

    Publication number Publication date
    EP0828114A3 (en) 1998-08-12

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