EP0864807B1 - Strassenleuchte - Google Patents

Strassenleuchte Download PDF

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Publication number
EP0864807B1
EP0864807B1 EP98200336A EP98200336A EP0864807B1 EP 0864807 B1 EP0864807 B1 EP 0864807B1 EP 98200336 A EP98200336 A EP 98200336A EP 98200336 A EP98200336 A EP 98200336A EP 0864807 B1 EP0864807 B1 EP 0864807B1
Authority
EP
European Patent Office
Prior art keywords
luminaire
lamp
reflector
optical element
profiled
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.)
Expired - Lifetime
Application number
EP98200336A
Other languages
English (en)
French (fr)
Other versions
EP0864807A1 (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
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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 a portion of the lamp flux, provided with at least one optical element said expander (beam).
  • Such a luminaire according to the preamble of claim 1 is known from patent GB 536,563.
  • the luminaire according to this document comprises a reflector collecting a part of the flux of a lamp, and it is provided, in the light ray output path, with a second V-shaped reflector for widening the beam.
  • the lighting of road tunnels can be realized using luminaires equipped with cylindrical optical systems. They are most often installed online, that is to say one after the other in the direction of the road. The online implementation ensures 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 the opposite direction.
  • the illumination In the entrance area of a tunnel, the illumination must be high to avoid the effect of black hole, the luminaires are close to each other, and there is no problem of uniformity.
  • the level of illumination required is much lower and the luminaires are spaced as far apart as possible, but uniformity may be a problem.
  • the choice of a suitable shape for the cross section of the reflector makes it possible to send a maximum of luminous flux onto the roadway and can be easily adapted to the specific configuration of the reflector.
  • each tunnel that is to say the cross section of the tunnel and the location of the luminaires.
  • the main disadvantage is that the spacing between luminaires is limited because of the lack of control of their longitudinal distribution of light intensity which, added to the discrete character of the available source powers, prevents optimization of the overall result.
  • An object of the invention is to provide luminaires provided with this type of optical system and inexpensive, whose longitudinal curve of light intensity is widened, thus providing a coherent solution for different tunnel lighting, with a single optical system of based.
  • the luminaire being intended to be used with the benefited reflector placed lengthwise in the direction of traffic on a road
  • the optical widening element is placed between the lamp and the profiled reflector, this element comprising at least one surface reflecting reflector inclined and perpendicular to a longitudinal vertical plane, in the position of use.
  • the luminaire advantageously comprises a single optical expansion element, of reduced size and placed in front of the light source.
  • the luminaire When the luminaire is provided for an elongated lamp, it advantageously comprises several optical enlarging elements.
  • an expanding optical element has a V-shaped section with the tip of the V facing the lamp.
  • an expanding optical element comprises asymmetrical surfaces with respect to a plane perpendicular to the longitudinal direction.
  • Figure 1 shows schematically in perspective the active parts of a luminaire.
  • Figure 2 illustrates how a reflector can provide asymmetrical illumination in the transverse direction but symmetrical in the longitudinal direction.
  • Figure 3 schematically shows a section of a tunnel illuminated by two luminaires.
  • Figure 4 is a longitudinal section in a luminaire according to a first embodiment of the invention.
  • Figure 5 is a longitudinal section in a luminaire according to a second embodiment of the invention.
  • the luminaire shown in FIG. 1 comprises a support 15 for a lamp 2, and a profiled reflector 1 collecting a large part of the flux of the lamp.
  • 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 reflecting.
  • the lamp 2 comprises for example a discharge source, among which mention may be made of sodium vapor sources or fluorescent tubes.
  • Part A of the figure shows a cross section of reflector 1D which is asymmetrical, and the The illuminance curve shown below is also asymmetrical.
  • Part B of the figure shows a longitudinal section of the same reflector 1D which is symmetrical, and the illumination curve indicated below is also symmetrical.
  • the luminaire is intended to be used with the profiled reflector placed lengthwise in the direction of the road, ie 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 adequate luminous flux on the roadway 8, as illustrated in FIG. 3, taking into account the cross section 7 of the tunnel and the location of the luminaires 5 and 6.
  • the luminaire shown schematically in FIG. 4 comprises a relatively point-like light source 2 and an optical element 9 takes up a small part of the luminous flux sent to redistribute it longitudinally, without appreciably modifying the transverse distribution or the luminous efficiency.
  • This element 9 is a reflective strip, placed perpendicular to the direction of the profiled reflector 1, between the lamp 2 and the profiled reflector. It has two inclined reflective surfaces here, collecting a small part of the lamp flux: it has a V-shaped section with the tip of the V turned towards the lamp. A light beam reflected by this optical element is indicated by 10, whereas the light beam that would be reflected by the reflector without the optical element is indicated by 11.
  • the light source is here of small size, and the optical enlargement element 9 is unique, of reduced size and placed in front of the light source.
  • the rays issuing approximately 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 optical widening element could also be placed in the exit window of the luminaire, as indicated at 16, or else an element such as the element 16 could be added in addition to the element 9, to further reduce the illumination. under the luminaire, and increase it away from it, in the longitudinal direction.
  • the element 9 A simple way of producing the element 9 is to constitute this element by means of an insert. However, in the case of luminaires manufactured in large quantities, the element 9 could also be obtained by stamping the bottom of the profiled reflector.
  • the lamp 20 is an elongate tube and a plurality of 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 the re-distribute longitudinally.
  • a light beam reflected by this optical element is here again indicated by 10.
  • the elements 12 have a V shape tip up. They could also have their point down, and be placed between the lamp 20 and the reflector 1, as in the case of the element 9 of Figure 4. Alternatively, single blades can also be used; such simple blades are shown for information 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 may be reflective and / or refracting. They may also be asymmetrical with respect to a plane perpendicular to the longitudinal direction: the faces may have for example an unequal slope on both sides of the V, or the elements 13 and 14 may not have the same slope, or the elements 13 and 14 may 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)

Claims (5)

  1. Straßenleuchte mit einer Halterung (15) für eine Lampe (2) und einem Profilreflektor (1) zum Bündeln eines Teils des Lichtstroms der Lampe, versehen mit mindestens einem sogenannten optischen Verbreiterungselement (9) (des Kegels), dadurch gekennzeichnet, dass die Leuchte dafür bestimmt ist, mit dem in Richtung des Verkehrs auf einer Straße längs angebrachten Profilreflektor (1) verwendet zu werden, wobei das optische Verbreiterungselement (9) zwischen der Lampe (2) und dem Profilreflektor (1) angebracht und dieses Element in Betriebsposition mit mindestens einer zu einer vertikalen Längsebene geneigten und rechtwinkligen reflektierende Fläche ausgerüstet ist.
  2. Leuchte nach Anspruch 1, dadurch gekennzeichnet, dass das optische Verbreiterungselement (9) einen Schnitt in V-Form, den Reflektor außerhalb des V und die Spitze des V zur Lampe gerichtet (2) hat.
  3. Leuchte nach einem der Ansprüche 1 oder 2, vorgesehen für eine Lichtquelle geringer Abmessung, dadurch gekennzeichnet, dass sie ein einziges optisches Verbreiterungselement (9) geringer Abmessung enthält, gegenüber der Lichtquelle angebracht.
  4. Leuchte nach einem der Ansprüche 1 oder 2, vorgesehen für eine längliche Lampe (20), dadurch gekennzeichnet, dass sie mehrere optische Verbreiterungselemente (9) enthält.
  5. Leuchte gemäß einem beliebigen der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass ein optisches Verbreiterungselement (9) in Bezug auf eine rechtwinklige Ebene in Längsrichtung asymmetrische Flächen enthält.
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 EP0864807A1 (de) 1998-09-16
EP0864807B1 true 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)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL2129963T3 (pl) * 2007-03-08 2012-07-31 Lyracom Urządzenie oświetlające z diodami LED

Family Cites Families (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
US4816976A (en) * 1987-02-03 1989-03-28 Manville Corporation High efficiency luminaire with high angle brightness control
DE4125545A1 (de) * 1990-08-16 1992-02-20 Siemens Ag Indirekte spiegelleuchte

Also Published As

Publication number Publication date
DE69835713D1 (de) 2006-10-12
EP0864807A1 (de) 1998-09-16
DE69835713T2 (de) 2007-04-19

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