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EP2423566A1 - Antiglare assembly for luminaires - Google Patents

Antiglare assembly for luminaires Download PDF

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Publication number
EP2423566A1
EP2423566A1 EP11178923A EP11178923A EP2423566A1 EP 2423566 A1 EP2423566 A1 EP 2423566A1 EP 11178923 A EP11178923 A EP 11178923A EP 11178923 A EP11178923 A EP 11178923A EP 2423566 A1 EP2423566 A1 EP 2423566A1
Authority
EP
European Patent Office
Prior art keywords
main body
plate
light source
lamina
assembly
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Withdrawn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
EP11178923A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2423566A8 (en
Inventor
Morgan Govoni
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.)
Schneider Electric Industrie Italia SpA
Original Assignee
Schneider Electric Industrie Italia SpA
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 Schneider Electric Industrie Italia SpA filed Critical Schneider Electric Industrie Italia SpA
Publication of EP2423566A1 publication Critical patent/EP2423566A1/en
Publication of EP2423566A8 publication Critical patent/EP2423566A8/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Withdrawn legal-status Critical Current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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • 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
    • F21V5/02—Refractors for light sources of prismatic shape
    • 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
    • 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
    • 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 an antiglare assembly for luminaires, particularly suitable for luminaires and lamps in general that use as light sources light emitting diodes known as LEDs.
  • the application of the present invention is particularly suitable for emergency lamps.
  • the power of the lamp is in fact such as to easily tolerate the reduction in optical transmission performance introduced by inserting an additional dedicated assembly intended to avoid glare.
  • the distribution of the optical prisms might not be suitable for a correct diffusion of the light radiation emitted by the LEDs.
  • LEDs are currently installed in emergency lamps without the adoption of additional protective screens. In this configuration, if the light emitted by the LEDs were to be viewed directly by a user, potential damage to his sight (of a substantially temporary type, but it is not possible to exclude more severe consequences) might occur.
  • the application of the prescriptions of the standard determines, with screens of the known type, a great reduction in the power of the emitted beam and consequently of the performance of the luminaire.
  • the aim of the present invention is to solve the problems described above, proposing an antiglare assembly for luminaires that is suitable to eliminate the risks of glare for people who are present in the room where the luminaire is installed.
  • an object of the invention is to propose an antiglare assembly for luminaires that is adapted to maximize the luminous performance and efficiency of the apparatus by reducing luminous output losses.
  • Another object of the invention is to propose an antiglare assembly for luminaires that is constituted by a minimal number of components so as to reduce production, assembly and storage costs.
  • a further object of the present invention is to provide an antiglare assembly for luminaires that has low costs, is relatively simple to provide in practice and safe in application.
  • an antiglare assembly for luminaires of the type comprising at least one translucent and transparent lamina, which substantially faces the light source and is proximate thereto, characterized in that it comprises a main body, which has a substantially curved cross-section and is provided with selective locking means for a plate for accommodating at least one light source, said translucent lamina being comprised along said main body, arranged longitudinally, substantially at its central portion, said lamina comprising adapted raised portions, recesses and shaped portions of at least one of its faces for the diffusion and redirection of the incident light radiation, subsequently transmitted through said lamina.
  • the reference numeral 1 generally designates an antiglare assembly for luminaires.
  • the assembly 1 comprises at least one transparent and translucent lamina 2, which substantially faces the light source 3 and is proximate thereto.
  • the assembly 1 comprises a main body 4, which has a substantially curved cross-section and is provided with means 5 for selective locking for a plate 6 for accommodating the at least one light source 3.
  • the translucent lamina 2 (which is substantially transparent so that it can be crossed easily by the light radiation emitted by the source 3) is comprised along the main body 4: in particular, it is arranged longitudinally with respect to it and is substantially located at its central portion.
  • Said lamina 2 comprises adapted raised portions 7, recesses 8 and shaped portions 9 of at least one of its faces for the diffusion and redirection of the incident luminous radiation subsequently transmitted through said lamina 2.
  • the assembly 1 according to the invention is particularly effective if one uses, as a light source 3 (accommodated on the plate 6), a light emitting diode known as LED (Light Emitting Diode).
  • a light source 3 accommodated on the plate 6
  • LED Light Emitting Diode
  • a plurality of LEDs is normally used, arranged according to a distribution dictated by lighting technology requirements; for example, with specific reference to the constructive solutions shown in the accompanying figures, the LEDs are arranged on a single row and equidistant along said plate 6.
  • the LEDs are distributed along the surface of the plate 6 that faces the internal face of the translucent lamina 2 of the main body 4.
  • the lamina 2 comprises a longitudinally shaped portion 9, substantially at its center line, which is substantially V-shaped.
  • the vertex of the V-shape protrudes from the internal face of the body 4 and is proximate to the top of the at least one light source 3 accommodated on the respective plate 6.
  • the vertex of the V-shaped portion 9 is aligned with the top of the LEDs aligned along the plate 6.
  • the lamina 2 comprises a plurality of prism-shaped raised portions 7 which are distributed on its outward-facing face (their provision also on its inward-facing face is not excluded).
  • the raised portions 7 can be shaped like irregular prisms but also like pyramids (for example with a square base): in any case, the provision of raised portions 7 having a hemispherical or hemiellipsoidal shape, depending on the specific requirements of application, is not excluded.
  • the locking means 5 comprise, on corresponding and facing internal edges 10 of the main body 4, respective shoulder frames 11 for the resting of corresponding perimetric portions of the plate 6 (designed to accommodate at least one light source 3).
  • the mounting of the plate 6 on the main body 4, thus arranging its perimetric portions on the shoulder frames 11, occurs as a consequence of an elastic deformation (widening with consequent increase in the mutual distance between the internal edges 10 of the body 4) of the main body 4.
  • the main body 4 comprises elastic protruding elements 12, provided with end teeth 13, which are designed for removable elastic coupling with respective seats of the fixed casing of the luminaire in which it will be installed.
  • the fixed casing normally also comprises the reflective parabola intended to convey the light radiation toward the space to be lit.
  • the luminaire comprises a casing for fixing to the installation surface, optionally with the interposition of adapted coupling elements (for example suspension units or mounting brackets), said at least one light source 3, connected to a respective electric power supply circuit, and at least one screen, which is at least partially transparent and can be associated functionally with the casing, faces the at least one light source 3 and is proximate thereto.
  • adapted coupling elements for example suspension units or mounting brackets
  • said at least one light source 3 connected to a respective electric power supply circuit
  • at least one screen which is at least partially transparent and can be associated functionally with the casing, faces the at least one light source 3 and is proximate thereto.
  • the luminaire furthermore comprises a plate 6 for supporting, in the ideal alignment configuration, the at least one light source 3.
  • the screen is constituted by a main body 4 that has a substantially curved cross-section.
  • the main body 4 is provided with selective locking means 5 for the plate 6 for accommodating the at least one light source 3.
  • the at least partially transparent area of the screen is comprised along the main body 4, arranged longitudinally, substantially at its central portion, and comprises adapted protrusions 7, recesses 8 and shaped portions 9 of at least one of its faces, for the diffusion and redirection of the incident luminous radiation subsequently transmitted through said area.
  • the invention is particularly efficient if the at least one light source 3 accommodated on the plate 6 is a light emitting diode known as LED (Light Emitting Diode). If multiple LEDs are present, they are suitably coupled and distributed over the plate 6.
  • LED Light Emitting Diode
  • the main body 4 of the luminaire according to the invention must comprise respective shoulder frames 11 for the resting of corresponding perimetric portions of the plate 6 (for accommodating the at least one light source 3) at its corresponding and facing internal edges 10.
  • What is proposed with the present invention is an assembly 1 that is assembled on the reflective parabola and cannot be disassembled in any way.
  • This assembly 1 diffuses the luminous beam of the individual LEDs, minimizing (no more than 5%) the loss of luminous output and ensuring safety for sight in accordance and compliance with the specific statutory provisions in force (IEC 6247 1:2006-EN A62471:2008).
  • the assembly can be opened without causing any glare problem: during maintenance, therefore, even the operator is protected against glare, since in order to access the sources 3 it is necessary to remove the entire assembly 1, to which the sources 3 are coupled by means of the plate 6.
  • the adoption of the assembly 1 ensures refraction of the light within the lamina 2, with a consequent increase in the breadth of the emitted luminous beam, which, with particular reference to LEDs, would be normally comprised between 60° and 120°.
  • the present invention solves the problems described above, proposing an antiglare assembly 1 for luminaires that is suitable to eliminate the risks of glare for people who are present in the room where the apparatus is installed.
  • the antiglare assembly 1 for luminaires is adapted to maximize the luminous performance and efficiency of the luminaire, reducing luminous output losses.
  • the antiglare assembly 1 for luminaires is constituted by a minimal number of components for reducing production, assembly and storage costs.
  • the materials used, as well as the dimensions, may be any according to the requirements and the state of the art.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Ceramic Products (AREA)
EP11178923A 2010-08-30 2011-08-25 Antiglare assembly for luminaires Withdrawn EP2423566A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITBO2010A000528A IT1401653B1 (it) 2010-08-30 2010-08-30 Gruppo anti-abbagliamento per apparecchi di illuminazione.

Publications (2)

Publication Number Publication Date
EP2423566A1 true EP2423566A1 (en) 2012-02-29
EP2423566A8 EP2423566A8 (en) 2012-07-04

Family

ID=43415241

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11178923A Withdrawn EP2423566A1 (en) 2010-08-30 2011-08-25 Antiglare assembly for luminaires

Country Status (3)

Country Link
EP (1) EP2423566A1 (it)
CN (1) CN102563529A (it)
IT (1) IT1401653B1 (it)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ304784B6 (cs) * 2013-08-15 2014-10-15 Pavel Dvořák Svítidlo s vyměnitelným kruhovým panelem LED diod
CZ304786B6 (cs) * 2013-08-15 2014-10-15 Pavel Dvořák Svítidlo s vyměnitelným obdélníkovým panelem LED diod

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29910417U1 (de) * 1999-06-15 1999-08-12 Sidler GmbH & Co, 72072 Tübingen Reflektorleuchte
DE10025449A1 (de) * 2000-05-23 2001-12-13 Osram Opto Semiconductors Gmbh Befestigungsleisten für SMD-Komponenten
DE20319640U1 (de) * 2003-12-02 2004-03-18 Ho, Sung Tao LED-Lampenröhre
US20090200966A1 (en) * 2007-05-16 2009-08-13 Amdor, Inc. Illumination unit with current interrupter component
US20100072877A1 (en) * 2008-09-19 2010-03-25 I Shou University Light emitting diode lamp tube

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29910417U1 (de) * 1999-06-15 1999-08-12 Sidler GmbH & Co, 72072 Tübingen Reflektorleuchte
DE10025449A1 (de) * 2000-05-23 2001-12-13 Osram Opto Semiconductors Gmbh Befestigungsleisten für SMD-Komponenten
DE20319640U1 (de) * 2003-12-02 2004-03-18 Ho, Sung Tao LED-Lampenröhre
US20090200966A1 (en) * 2007-05-16 2009-08-13 Amdor, Inc. Illumination unit with current interrupter component
US20100072877A1 (en) * 2008-09-19 2010-03-25 I Shou University Light emitting diode lamp tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ304784B6 (cs) * 2013-08-15 2014-10-15 Pavel Dvořák Svítidlo s vyměnitelným kruhovým panelem LED diod
CZ304786B6 (cs) * 2013-08-15 2014-10-15 Pavel Dvořák Svítidlo s vyměnitelným obdélníkovým panelem LED diod

Also Published As

Publication number Publication date
CN102563529A (zh) 2012-07-11
EP2423566A8 (en) 2012-07-04
IT1401653B1 (it) 2013-08-02
ITBO20100528A1 (it) 2012-03-01

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