EP0864807A1 - Strassenleuchte - Google Patents

Strassenleuchte Download PDF

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Publication number
EP0864807A1
EP0864807A1 EP98200336A EP98200336A EP0864807A1 EP 0864807 A1 EP0864807 A1 EP 0864807A1 EP 98200336 A EP98200336 A EP 98200336A EP 98200336 A EP98200336 A EP 98200336A EP 0864807 A1 EP0864807 A1 EP 0864807A1
Authority
EP
European Patent Office
Prior art keywords
lamp
reflector
optical element
luminaire
light source
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
EP98200336A
Other languages
English (en)
French (fr)
Other versions
EP0864807B1 (de
Inventor
Rémi Noirot
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke 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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of EP0864807A1 publication Critical patent/EP0864807A1/de
Application granted granted Critical
Publication of EP0864807B1 publication Critical patent/EP0864807B1/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
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • 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
    • F21S8/08—Lighting devices intended for fixed installation with a standard
    • F21S8/085—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light
    • F21S8/086—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light with lighting device attached sideways of the standard, e.g. for roads and highways
    • 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
    • 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 present invention relates to a road lighting luminaire, comprising a support for a lamp, and a reflector used to collect part of the flow of the lamp, provided with at least one optical element (beam) expander.
  • a road lighting luminaire comprising a support for a lamp, and a reflector used to collect part of the flow of the lamp, provided with at least one optical element (beam) expander.
  • Such a luminaire is known from GB 536,563.
  • the luminaire according to this document includes a reflector collecting part of the flow of a lamp, and it is provided, in the light ray exit path, a second V-shaped reflector to widen the beam.
  • Road tunnels can be lit using luminaires fitted with cylindrical optical systems. They are most often installed online, i.e. one after the other in the direction of the road. The online establishment ensures a good visual guidance for motorists.
  • the spacing between successive luminaires is a function of the desired level and uniformity of illumination, level and uniformity varying in reverse.
  • the lighting In the entrance area of a tunnel, the lighting must be high to avoid the black hole effect, the fixtures are close to each other, and there is no problem of uniformity.
  • the required level of lighting is much lower and the luminaires are spaced as much as possible, but consistency may be an issue.
  • the axis of the profiled reflector being parallel to the axis of the tunnel, the choice of an appropriate shape for the section transverse of the reflector allows to send a maximum of luminous flux on the pavement and can be easily adapted to the specific configuration of each tunnel, i.e. the cross section of the tunnel and the location of the luminaires.
  • the main drawback is that the spacing between luminaires remains limited to because of the lack of control over their longitudinal distribution of light intensity which, added to the discreet nature of the powers of available sources, prevents optimize the overall result.
  • An object of the invention is to provide luminaires fitted with this type of system optical and inexpensive, the longitudinal curve of light intensity of which is widened, thus offering a coherent solution for different tunnel lighting, with a single basic optical system.
  • the luminaire being intended to be used with the profit reflector placed in along in the direction of traffic on a road
  • the widening optical element is placed between the lamp and the profiled reflector, this element comprising at least one reflecting surface inclined and perpendicular to a longitudinal vertical plane, in position of use.
  • the luminaire comprises advantageously a single enlarging optical element, of reduced size and placed in front of the light source.
  • the luminaire When the luminaire is designed for an elongated lamp, it includes advantageously several optical widening elements.
  • an optical widening element has a V-shaped section with the tip of the V facing the lamp.
  • an optical element expander has asymmetrical surfaces in relation to a plane perpendicular to the longitudinal direction.
  • Figure 1 shows schematically in perspective the active parts of a lamp.
  • Figure 2 illustrates how a reflector can provide asymmetric illumination in the transverse direction but symmetrical in the longitudinal direction.
  • FIG. 3 schematically represents a section of a tunnel lit by two light fixtures.
  • Figure 4 is a longitudinal section in a luminaire according to a first mode of realization of the invention.
  • Figure 5 is a longitudinal section in a luminaire according to a second mode of realization of the invention.
  • the luminaire shown in FIG. 1 includes a support 15 for a lamp 2, and a profiled reflector 1 collecting a large part of the lamp flux.
  • the profiled reflector is made of polished high purity aluminum sheet and is obtained by folding or forming.
  • the reflector is here closed at its ends by flanks 3, 4 also reflective.
  • the lamp 2 comprises for example a discharge source, among which one can cite sodium vapor sources or fluorescent tubes.
  • the luminaire is intended to be used with the profiled reflector placed lengthwise in the direction of the road, in other words with the axis of the lamp parallel to the axis of the tunnel, the shape of the cross section is chosen so as to send the luminous flux adequate on pavement 8, as illustrated in figure 3, taking into account the cross-section 7 of the tunnel and the location of lights 5 and 6.
  • the luminaire shown diagrammatically in FIG. 4 comprises a light source 2 relatively punctual and an optical element 9 takes up a small part of the flux light sent to redistribute it longitudinally, without modifying sensitive the transverse distribution, nor the light output.
  • This element 9 is a reflective strip, placed perpendicular to the direction of the profiled reflector 1, between lamp 2 and the profiled reflector. Here it has two reflective surfaces inclined, collecting a small part of the lamp flow: it has a shaped section of V with the point of V turned towards the lamp. A light ray reflected by this optical element is indicated by 10, while the light ray which would be reflected by the reflector without the optical element is indicated by 11.
  • the light source here is small dimension, and the widening optical element 9 is unique, of reduced dimension and placed in front of the light source. So only the rays coming out more or less vertically from the source are deflected, which means that the luminance is decreased under the luminaire and increased at a distance from it, in the longitudinal direction.
  • the enlarging optical element could also be placed in the output window of the luminaire, as indicated in 16, or even an element such as element 16 could be added in addition to element 9, to further decrease the illumination under the fixture, and increase it away from it, in the longitudinal direction.
  • element 9 A simple way of making the element 9 is to constitute this element by means of a patch. However, in the case of luminaires manufactured in large quantities, element 9 could also be obtained by stamping the bottom of the profiled reflector.
  • the lamp 20 is an elongated tube and several simple optical elements, one of which has the reference 12, are distributed along the lamp 20, and each take a part of the luminous flux sent to redistribute it longitudinally.
  • a light ray reflected by this optical element is here again indicated by 10.
  • the elements 12 have a V-shaped point at the top. They could also have their tip down, and be placed between the lamp 20 and the reflector 1, as in the case of element 9 in FIG. 4.
  • simple blades can also be used; such simple blades are shown for information only on the right in the figure, with the references 13, 14. This is also possible in the case of figure 4.
  • the optical elements 9, 12, 13, 14, 16 can be reflecting and / or refracting. They can also be asymmetrical with respect to a plane perpendicular to the longitudinal direction: the faces can for example have an uneven slope of two sides of the V, or elements 13 and 14 may not have the same slope, or still the elements 13 and 14 can be parallel to each other, so as to return the light always on the same side.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP98200336A 1997-02-14 1998-02-05 Strassenleuchte Expired - Lifetime EP0864807B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9701746 1997-02-14
FR9701746 1997-02-14

Publications (2)

Publication Number Publication Date
EP0864807A1 true EP0864807A1 (de) 1998-09-16
EP0864807B1 EP0864807B1 (de) 2006-08-30

Family

ID=9503725

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98200336A Expired - Lifetime EP0864807B1 (de) 1997-02-14 1998-02-05 Strassenleuchte

Country Status (2)

Country Link
EP (1) EP0864807B1 (de)
DE (1) DE69835713T2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008125772A1 (fr) * 2007-03-08 2008-10-23 Lyracom Dispositif d'eclairage a led

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB536563A (en) * 1940-04-29 1941-05-20 George Victor Downer Improvements in or relating to illuminating devices
US2732488A (en) * 1956-01-24 wince
US2904673A (en) * 1957-02-13 1959-09-15 Sr Edwin F Guth Light diffusors for illuminating devices
CH494919A (de) * 1969-11-12 1970-08-15 Novelectric Ag Leuchte, insbesondere für Strassentunnels
EP0277579A2 (de) * 1987-02-03 1988-08-10 Holophane Company, Inc. Leistungsfähige Leuchte mit reduzierter Lichtstärke bei hohem Ausstrahlungswinkel
DE4125545A1 (de) * 1990-08-16 1992-02-20 Siemens Ag Indirekte spiegelleuchte

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732488A (en) * 1956-01-24 wince
GB536563A (en) * 1940-04-29 1941-05-20 George Victor Downer Improvements in or relating to illuminating devices
US2904673A (en) * 1957-02-13 1959-09-15 Sr Edwin F Guth Light diffusors for illuminating devices
CH494919A (de) * 1969-11-12 1970-08-15 Novelectric Ag Leuchte, insbesondere für Strassentunnels
EP0277579A2 (de) * 1987-02-03 1988-08-10 Holophane Company, Inc. Leistungsfähige Leuchte mit reduzierter Lichtstärke bei hohem Ausstrahlungswinkel
DE4125545A1 (de) * 1990-08-16 1992-02-20 Siemens Ag Indirekte spiegelleuchte

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008125772A1 (fr) * 2007-03-08 2008-10-23 Lyracom Dispositif d'eclairage a led

Also Published As

Publication number Publication date
EP0864807B1 (de) 2006-08-30
DE69835713T2 (de) 2007-04-19
DE69835713D1 (de) 2006-10-12

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