EP1152187A2 - Beleuchtungseinrichtung - Google Patents

Beleuchtungseinrichtung Download PDF

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Publication number
EP1152187A2
EP1152187A2 EP01830287A EP01830287A EP1152187A2 EP 1152187 A2 EP1152187 A2 EP 1152187A2 EP 01830287 A EP01830287 A EP 01830287A EP 01830287 A EP01830287 A EP 01830287A EP 1152187 A2 EP1152187 A2 EP 1152187A2
Authority
EP
European Patent Office
Prior art keywords
source
reflecting
lighting device
reflector
light
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
EP01830287A
Other languages
English (en)
French (fr)
Other versions
EP1152187B1 (de
EP1152187A3 (de
Inventor
Claudia Bigliati
Piero Perlo
Sabino Sinesi
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.)
Centro Ricerche Fiat SCpA
Original Assignee
Centro Ricerche Fiat SCpA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11457695&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1152187(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Centro Ricerche Fiat SCpA filed Critical Centro Ricerche Fiat SCpA
Priority to EP03019736A priority Critical patent/EP1376008B1/de
Publication of EP1152187A2 publication Critical patent/EP1152187A2/de
Publication of EP1152187A3 publication Critical patent/EP1152187A3/de
Application granted granted Critical
Publication of EP1152187B1 publication Critical patent/EP1152187B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • 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
    • F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
    • 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
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2106/00—Interior vehicle lighting devices
    • 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

  • This invention relates to lighting devices for use in motor vehicles, for example for illuminating the passenger compartment, or in homes or offices and public working premises.
  • This invention particularly relates to a lighting device of the type comprising a light source, which is extended longitudinally and devices for reflecting the light rays emitted by the source so to form a beam of a predetermined conformation output by the device.
  • the purpose of this invention is to realise a lighting device presenting high efficiency and a simple, cost-effective, small sized structure.
  • this invention relates to a lighting device characterised in that said reflecting devices comprise: a primary reflector, arranged adjacently on one side of the extended light source, for reflecting the light rays output by the source and
  • Said device is also characterised in that the primary reflector presents a section on a plane, which is perpendicular to the longitudinal axis of the source, comprising two volute sections, joined to form a cusp immediately adjacent to the source and preferably with the axis of the double volute slanted towards the secondary reflector and in that said secondary reflector presents a section, on a plane, which is perpendicular to the longitudinal axis of the source, comprising a set of reflecting sectors arranged in steps.
  • the lighting device according to this invention presents very high efficiency and is very small in the output direction of the beam.
  • said extended light source is fluorescent tube, for example of the type marketed with the codes T8 or T5.
  • a device utilising a light source of any other type, for example incandescence, halogen or discharge bulbs, is comprised in the scope of this invention.
  • said reflecting sectors of the secondary reflector are spaced by portions of a union arranged radially with respect to the external extremity of the volute profile of the primary reflector.
  • the reflecting sectors of the secondary reflector are separated by slots and a each equipped with a reflecting tab for reflecting the light rays in the direction which is opposite to that of the main output direction of the light beam from the device, through said slots.
  • the device according to this invention can be equipped with a lens arranged in front of the primary reflector and the secondary reflector with an internal surface which may be partially or totally equipped with micro prisms.
  • numeral 1 generally indicates a lighting device comprising a pair of light sources 2 in the shape of fluorescent tubes, with an extended longitudinal direction.
  • a reflecting structure indicated generally with reference numeral 3, is associated to the two light sources.
  • the reflecting structure presents a primary reflector 4 and a secondary reflector 5, associated to each light source 2
  • Each primary reflector 4 presents, on a plane with is perpendicular to the longitudinal direction of the light sources 2 (see figure 2) a profile consisting of two volute sections 6, 7, presenting concave surfaces facing the source 2 and joined together to form a cusp 8, located in immediately adjacent to the source 2.
  • the axis 4a of the double cusp is slanted towards the secondary reflector 5.
  • Each secondary reflector 5 presents a plurality of active reflecting sectors 9 corresponding, for example, to portions of a parabola or presenting a complex geometry of any type, joined by union sections 10, arranged radially with respect to the free extremity 7a facing outwards with respect to the double volute profile of the primary reflector 4.
  • the secondary reflectors 5 reflect the light rays directly from the light source 2 either associated to it or reflected by the primary reflector 4 outwards (i.e. rightwards with reference to figure 2).
  • the light device presents high efficiency (in the order of 80%) of extraction of the light in the output direction of the light flow with respect to the total output energy.
  • the dimension of the device in the direction of output of the light beam is extremely reduced, which makes the device suitable, for example, also to illuminate rooms in homes or working premises fitted to the ceiling or the wall with the two secondary reflectors 5 both adjacent to the ceiling, because, in this position, the device will only slightly project from the surface on which it is fastened.
  • Figure 3 illustrates a variation with a single source 2, presenting a profile which essentially corresponds to one half of the profile in figure 2.
  • Figure 4 illustrates a variation which differs from the solution in figure 2 only for the fact that it is provided with a lens 11 which closes the front of the device and which has an internal surface partially or totally provided with micro prisms 12.
  • Figure 5 illustrates a variation of figure 3 in which slots 13 are made between the active portions 9 of the secondary reflector and in which each active portion 9 is equipped with an additional tab 14 for reflecting the light rays hitting its rear surface (with reference to the main output direction of the light beam) in the opposite direction to said main direction.
  • the solution in figure 5 can be used, for example, for illuminating the inside of vertical light panels visible on both sides, such as the case, for example, of light panels which indicate fire exits in public venues or working premises.
  • the central part of the device is more extended outwards, over the edge of the wall or ceiling. This solution is particularly suitable for ceiling applications in which the depth of the device must be reduced and good beam direction control is required at the same time.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Substances (AREA)
  • Control Of Eletrric Generators (AREA)
EP01830287A 2000-05-02 2001-04-30 Beleuchtungseinrichtung Expired - Lifetime EP1152187B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03019736A EP1376008B1 (de) 2000-05-02 2001-04-30 Beleuchtungseinrichtung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2000TO000407A IT1320063B1 (it) 2000-05-02 2000-05-02 Dispositivo di illuminazione.
ITTO200407 2000-05-02

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP03019736A Division EP1376008B1 (de) 2000-05-02 2001-04-30 Beleuchtungseinrichtung
EP03019736.2 Division-Into 2003-08-29

Publications (3)

Publication Number Publication Date
EP1152187A2 true EP1152187A2 (de) 2001-11-07
EP1152187A3 EP1152187A3 (de) 2002-11-13
EP1152187B1 EP1152187B1 (de) 2004-11-17

Family

ID=11457695

Family Applications (2)

Application Number Title Priority Date Filing Date
EP01830287A Expired - Lifetime EP1152187B1 (de) 2000-05-02 2001-04-30 Beleuchtungseinrichtung
EP03019736A Expired - Lifetime EP1376008B1 (de) 2000-05-02 2001-04-30 Beleuchtungseinrichtung

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP03019736A Expired - Lifetime EP1376008B1 (de) 2000-05-02 2001-04-30 Beleuchtungseinrichtung

Country Status (4)

Country Link
EP (2) EP1152187B1 (de)
DE (2) DE60107297T8 (de)
ES (2) ES2231423T3 (de)
IT (1) IT1320063B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1526329A1 (de) * 2003-10-23 2005-04-27 PIZZIGA, Jean-Pierre Reflektor für eine ringförmige Leuchtstofflampe
EP2299163A3 (de) * 2009-09-21 2014-04-30 Berchtold Holding GmbH Operationsleuchte
JP2015076184A (ja) * 2013-10-07 2015-04-20 市光工業株式会社 車両用灯具

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7040782B2 (en) * 2004-02-19 2006-05-09 Gelcore, Llc Off-axis parabolic reflector
ES2556566B1 (es) * 2014-07-10 2016-11-02 Lledó Iluminación Sa Dispositivo modular luminiscente

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1021159A (en) * 1963-11-18 1966-03-02 Lucas Industries Ltd Lamps
DE3702236A1 (de) * 1986-01-27 1987-12-10 Steinecke Wolfhart Strahler fuer die indirekte beleuchtung eines raumes
IT1281366B1 (it) * 1995-09-27 1998-02-18 Carello Spa Dispositivo di illuminazione realizzabile con spessore ridotto, in particolare proiettore o fanale per veicoli

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1526329A1 (de) * 2003-10-23 2005-04-27 PIZZIGA, Jean-Pierre Reflektor für eine ringförmige Leuchtstofflampe
EP2299163A3 (de) * 2009-09-21 2014-04-30 Berchtold Holding GmbH Operationsleuchte
JP2015076184A (ja) * 2013-10-07 2015-04-20 市光工業株式会社 車両用灯具

Also Published As

Publication number Publication date
DE60107297T8 (de) 2006-04-27
IT1320063B1 (it) 2003-11-12
ITTO20000407A0 (it) 2000-05-02
DE60107139D1 (de) 2004-12-23
EP1376008A2 (de) 2004-01-02
ITTO20000407A1 (it) 2001-11-02
EP1376008B1 (de) 2004-11-17
DE60107139T2 (de) 2006-02-09
DE60107297T2 (de) 2006-02-09
ES2231752T3 (es) 2005-05-16
DE60107297D1 (de) 2004-12-23
EP1152187B1 (de) 2004-11-17
EP1376008A3 (de) 2004-01-28
EP1152187A3 (de) 2002-11-13
ES2231423T3 (es) 2005-05-16

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