EP0864807B1 - Street lighting luminaire - Google Patents
Street lighting luminaire Download PDFInfo
- 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
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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
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- 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.
Description
La présente invention concerne un luminaire d'éclairage routier, comprenant un support pour une lampe, et un réflecteur profité pour collecter une partie du flux de la lampe, muni d'au moins un élément optique dit élargisseur (de faisceau).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).
Un tel luminaire selon le préambule de la revendication 1 est connu du brevet GB 536,563. Le luminaire selon ce document comporte un réflecteur collectant une partie du flux d'une lampe, et il est muni, dans le trajet de sortie des rayons lumineux, d'un second réflecteur en V pour élargir le faisceau.Such a luminaire according to the preamble of
L'éclairage de tunnels routiers peut être réalisé à l'aide de luminaires équipés de systèmes optiques cylindriques. Ils sont le plus souvent installés en ligne, c'est-à-dire l'un à la suite de l'autre dans la direction de la route. L'implantation en ligne assure un bon guidage visuel pour les automobilistes. L'espacement entre luminaires successifs est fonction du niveau et de l'uniformité d'éclairement souhaités, niveau et uniformité variant en sens inverse. Dans la zone d'entrée d'un tunnel, l'éclairement doit être élevé pour éviter l'effet de trou noir, les luminaires sont proches les uns des autres, et il n'y a pas de problème d'uniformité. Dans la zone courante entre la zone d'entrée et la sortie, le niveau d'éclairement requis est bien moindre et les luminaires sont espacés le plus possible, mais l'uniformité risque de poser problème. L'axe du réflecteur profilé étant parallèle à l'axe du tunnel, le choix d'une forme appropriée pour la section transversale du réflecteur permet d'envoyer un maximum de flux lumineux sur la chaussée et peut être adapté facilement à la configuration spécifique de chaque tunnel, c'est-à-dire la section transversale du tunnel et la localisation des luminaires. Le principal inconvénient vient de ce que l'espacement entre luminaires reste limité à cause de l'absence de maîtrise de leur distribution longitudinale d'intensité lumineuse qui, ajouté au caractère discret des puissances de sources disponibles, empêche d'optimiser le résultat global.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. 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. In the current area between the input area and the output, the level of illumination required is much lower and the luminaires are spaced as far apart as possible, but uniformity may be a problem. Since the axis of the profiled reflector is parallel to the axis of the tunnel, 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.
Un objet de l'invention est de fournir des luminaires munis de ce type de système optique et peu onéreux, dont la courbe longitudinale d'intensité lumineuse soit élargie, offrant ainsi une solution cohérente pour différents éclairages de tunnels, avec un seul système optique de base.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.
A cet effet, le luminaire étant destiné à être utilisé avec le réflecteur profité placé en long dans la direction de la circulation sur une route, l'élément optique élargisseur est placé entre la lampe et le réflecteur profilé, cet élément comportant au moins une surface réfléchissante inclinée et perpendiculaire à un plan vertical longitudinal, en position d'utilisation.For this purpose, 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.
Dans le cas d'une source lumineuse de faible dimension, le luminaire comporte avantageusement un élément optique élargisseur unique, de dimension réduite et placé en face de la source lumineuse.In the case of a light source of small size, the luminaire advantageously comprises a single optical expansion element, of reduced size and placed in front of the light source.
Lorsque le luminaire est prévu pour une lampe allongée, il comporte avantageusement plusieurs éléments optiques élargisseurs.When the luminaire is provided for an elongated lamp, it advantageously comprises several optical enlarging elements.
Selon un autre mode de réalisation particulier, un élément optique élargisseur a une section en forme de V avec la pointe du V tournée vers la lampe.According to another particular embodiment, an expanding optical element has a V-shaped section with the tip of the V facing the lamp.
Selon encore un autre mode de réalisation particulier, un élément optique élargisseur comporte des surfaces dissymétriques par rapport à un plan perpendiculaire à la direction longitudinale.According to yet another particular embodiment, an expanding optical element comprises asymmetrical surfaces with respect to a plane perpendicular to the longitudinal direction.
Ceci constitue une variante intéressante dans le cas de tunnels à un seul sens de circulation.This is an interesting variant in the case of tunnels with only one direction of circulation.
Ces aspects de l'invention ainsi que d'autres aspects plus détaillés apparaîtront plus clairement grâce à la description suivante d'un mode de réalisation constituant un exemple non limitatif.These and other more detailed aspects of the invention will become more apparent from the following description of an embodiment as a non-limiting example.
La figure 1 représente schématiquement en perspective les parties actives d'un luminaire.Figure 1 shows schematically in perspective the active parts of a luminaire.
La figure 2 illustre comment un réflecteur peut fournir un éclairement dissymétrique selon la direction transversale mais symétrique selon la direction longitudinale.Figure 2 illustrates how a reflector can provide asymmetrical illumination in the transverse direction but symmetrical in the longitudinal direction.
La figure 3 représente schématiquement une section d'un tunnel éclairée par deux luminaires.Figure 3 schematically shows a section of a tunnel illuminated by two luminaires.
La figure 4 est une coupe longitudinale dans un luminaire selon un premier mode de réalisation de l'invention.Figure 4 is a longitudinal section in a luminaire according to a first embodiment of the invention.
La figure 5 est une coupe longitudinale dans un luminaire selon un second mode de réalisation de l'invention.Figure 5 is a longitudinal section in a luminaire according to a second embodiment of the invention.
Le luminaire représenté sur la figure 1 comporte un support 15 pour une lampe 2, et un réflecteur profilé 1 collectant une grande partie du flux de la lampe. En général le réflecteur profilé est réalisé en tôle d'aluminium de haute pureté polie et est obtenu par pliage ou formage. Le réflecteur est ici fermé à ses extrémités par des flancs 3, 4 également réfléchissants.The luminaire shown in FIG. 1 comprises a
La lampe 2 comprend par exemple une source à décharge, parmi lesquelles on peut citer les sources à vapeur de sodium ou les tubes fluorescents.The
C'est essentiellement la forme de la section du réflecteur qui définit la distribution d'intensité lumineuse mais cette forme n'agit que sur la courbe transversale et non sur la courbe longitudinale, comme l'illustre la figure 2. La partie A de la figure montre une section transversale de réflecteur 1 D qui est dissymétrique, et la courbe d'éclairement indiquée en dessous est également dissymétrique. La partie B de la figure montre une section longitudinale du même réflecteur 1 D qui est symétrique, et la courbe d'éclairement indiquée en dessous est également symétrique.It is essentially the shape of the reflector section that defines the distribution of light intensity, but this shape acts only on the transverse curve and not on the longitudinal curve, as shown in FIG. 2. Part A of the figure shows a cross section of
Le luminaire étant destiné à être utilisé avec le réflecteur profilé placé en long dans la direction de la route, autrement dit avec l'axe de la lampe parallèle à l'axe du tunnel, la forme de la section transversale est choisie de façon à envoyer le flux lumineux adéquat sur la chaussée 8, comme illustré par la figure 3, compte tenu de la section transversale 7 du tunnel et de la localisation des luminaires 5 et 6.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
Le luminaire schématisé par la figure 4 comporte une source lumineuse 2 relativement ponctuelle et un élément optique 9 prélève une faible partie du flux lumineux envoyé pour le re-distribuer longitudinalement, sans modifier de façon sensible la distribution transversale, ni le rendement lumineux. Cet élément 9 est une lamelle réfléchissante, placée perpendiculairement à la direction du réflecteur profilé 1, entre la lampe 2 et le réflecteur profilé. Elle comporte ici deux surfaces réfléchissantes inclinées, collectant une petite partie du flux de la lampe : elle a une section en forme de V avec la pointe du V tournée vers la lampe. Un rayon lumineux réfléchi par cet élément optique est indiqué par 10, alors que le rayon lumineux qui serait réfléchi par le réflecteur sans l'élément optique est indiqué par 11. La source lumineuse est ici de faible dimension, et l'élément optique élargisseur 9 est unique, de dimension réduite et placé en face de la source lumineuse. Ainsi seuls les rayons sortant à peu près verticalement de la source sont déviés, ce qui signifie que la luminance est diminuée sous le luminaire et augmentée à distance de celui-ci, dans la direction longitudinale.The luminaire shown schematically in FIG. 4 comprises a relatively point-
L'élément optique élargisseur pourrait aussi être placé dans la fenêtre de sortie du luminaire, comme indiqué en 16, ou bien encore un élément tel que l'élément 16 pourrait être ajouté en plus de l'élément 9, pour diminuer encore l'éclairement sous le luminaire, et l'augmenter à distance de celui-ci, dans la direction longitudinale.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
Une manière simple de réaliser l'élément 9 est de constituer cet élément au moyen d'une pièce rapportée. Néanmoins, dans le cas de luminaires fabriqués en grandes quantités, l'élément 9 pourrait aussi être obtenu par un emboutissage du fond du réflecteur profilé.A simple way of producing the
Le nombre d'éléments optiques dépend de la longueur de la source lumineuse. Dans la variante schématisée par la figure 5, la lampe 20 est un tube allongé et plusieurs éléments optiques simples, dont l'un porte la référence 12, sont répartis le long de la lampe 20, et prélèvent chacun une partie du flux lumineux envoyé pour le re-distribuer longitudinalement. Un rayon lumineux réfléchi par cet élément optique est ici encore indiqué par 10. Les éléments 12 ont une forme en V pointe en haut. Ils pourraient aussi avoir leur pointe en bas, et être placés entre la lampe 20 et le réflecteur 1, comme dans le cas de l'élément 9 de la figure 4. En variante, des lames simples peuvent aussi être utilisées ; de telles lames simples sont représentées à titre indicatif à droite sur la figure, avec les références 13, 14. Ceci est possible également dans le cas de la figure 4.The number of optical elements depends on the length of the light source. In the variant shown schematically in FIG. 5, the
Les éléments optiques 9, 12, 13, 14, 16 peuvent être réfléchissants et/ou réfractants. Ils peuvent de plus être asymétriques par rapport à un plan perpendiculaire à la direction longitudinale : les faces peuvent avoir par exemple une pente inégale des deux côtés du V, ou bien les éléments 13 et 14 peuvent n'avoir pas la même pente, ou encore les éléments 13 et 14 peuvent être parallèles entre eux, de façon à renvoyer la lumière toujours du même côté.The
Claims (5)
- A street lighting luminaire comprising a support (15) for a lamp (2) and a reflector (1) that is profiled fro capturing part of the luminous flux of the lamp, and provided with at least one beam-widening optical element (9), characterized in that, the luminaire being designed for use with the profiled reflector (1) arranged in longitudinal direction of the traffic on a road, the beam-widening optical element (9) is placed between the lamp (2) and the profiled reflector (1), said element comprising at least one reflecting surface that is inclined and perpendicular to a vertical longitudinal plane in its operational position.
- A luminaire as claimed in claim 1, characterized in that the beam-widening optical element (9) has a V-shaped cross-section with a reflector at the exterior of the V and with the tip of the V pointing towards the lamp (2).
- A luminaire as claimed in any one of the claims 1 and 2, designed for a single beam-widening optical element (9) of reduced dimensions and placed opposite the light source.
- A luminaire as claimed in any one of the claims 1 and 2 and designed for an elongate lamp (20), characterized in that it comprises a plurality of beam-widening optical elements (9).
- A luminaire as claimed in any one of the claims 1 to 4, characterized in that a beam-widening optical element (9) comprises surfaces that are asymmetrical with respect to a plane perpendicular to the longitudinal direction.
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 (en) | 1998-09-16 |
| EP0864807B1 true EP0864807B1 (en) | 2006-08-30 |
Family
ID=9503725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98200336A Expired - Lifetime EP0864807B1 (en) | 1997-02-14 | 1998-02-05 | Street lighting luminaire |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0864807B1 (en) |
| DE (1) | DE69835713T2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2129963B1 (en) * | 2007-03-08 | 2011-11-30 | Lyracom | Led lighting device |
Family Cites Families (6)
| 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 (en) * | 1969-11-12 | 1970-08-15 | Novelectric Ag | Luminaire, especially for road tunnels |
| US4816976A (en) * | 1987-02-03 | 1989-03-28 | Manville Corporation | High efficiency luminaire with high angle brightness control |
| DE4125545A1 (en) * | 1990-08-16 | 1992-02-20 | Siemens Ag | Indirect reflector lamp for high-quality interior lighting - has two concave reflectors illuminated through orthogonally prismatic sidewalls of channel surrounding straight fluorescent tube |
-
1998
- 1998-02-05 EP EP98200336A patent/EP0864807B1/en not_active Expired - Lifetime
- 1998-02-05 DE DE69835713T patent/DE69835713T2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE69835713T2 (en) | 2007-04-19 |
| EP0864807A1 (en) | 1998-09-16 |
| DE69835713D1 (en) | 2006-10-12 |
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