EP3283818B1 - Module d'éclairage - Google Patents

Module d'éclairage Download PDF

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Publication number
EP3283818B1
EP3283818B1 EP16779676.2A EP16779676A EP3283818B1 EP 3283818 B1 EP3283818 B1 EP 3283818B1 EP 16779676 A EP16779676 A EP 16779676A EP 3283818 B1 EP3283818 B1 EP 3283818B1
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EP
European Patent Office
Prior art keywords
lighting
module
source
axis
plane
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.)
Active
Application number
EP16779676.2A
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German (de)
English (en)
Other versions
EP3283818A2 (fr
Inventor
Roberto Botti
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.)
SIMES Societa Italiana Medicinali e Sintetici SpA
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SIMES Societa Italiana Medicinali e Sintetici SpA
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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
    • F21V7/04—Optical design
    • 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
    • F21V7/0083—Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane
    • 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
    • F21V7/10—Construction
    • 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
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F21W2131/103—Outdoor lighting of streets or roads
    • 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

  • This invention relates to a lighting module, in particular for realising a street lighting apparatus, and a lighting apparatus comprising a plurality of such lighting modules.
  • the lighting groups for street applications that belong to the state of the art and are commonly available on the market generally comprise: a main body suitable to provide mechanical support to the entire structure and provided with suitable means of coupling and fixing on poles, cables, heads, catenaries and walls; a lighting source (generally of the filament or discharge type) provided with the related mechanical fixing means and power supply connection; a possible reflector suitable to convey the light output of said lighting source in a portion of space and optics generally comprising a diffuser constituted by a transparent or semi-transparent screen, suitable to close the main body and, if necessary, to filter the light emitted in the desired ways.
  • a main body suitable to provide mechanical support to the entire structure and provided with suitable means of coupling and fixing on poles, cables, heads, catenaries and walls
  • a lighting source generally of the filament or discharge type
  • a possible reflector suitable to convey the light output of said lighting source in a portion of space and optics generally comprising a diffuser constituted by a transparent or semi-transparent screen, suitable to
  • Street lighting has specific peculiarities related to the reflection characteristics of the street surface, which is, in general, not isotropic.
  • the light is reflected as a function of the angles of incidence and of reflection of the light on the street surface and thus, to optimise the street lighting and avoid dangerous shadow areas, the light output must be directed where it is most effective, i.e., in the direction in which the luminance is greater and more uniform.
  • the light output must be directed to the areas of the street surface in which the ration between the resulting luminance and the illumination is greater in order to achieve better lighting results with less light output, and in the areas in which the resulting luminance is more uniform, so as to respect the parameters of uniformity of illumination prescribed by current regulations.
  • the individual LEDs are generally arranged on the same plane and the light must be deflected in the desired directions in order to achieve the overall band of illumination desired.
  • TIR Total Internal Reflection
  • TIR-type lenses provides a high degree of flexibility, it involves a series of technical problems, on the other.
  • these TIR lenses are normally made of plastic, there can be problems related to the natural deterioration of the characteristics of the material. In fact, yellowing and opacification of the plastics used can occur in relatively short times and heavily impact the performance of the apparatus.
  • the use of the TIR lenses in street lighting groups makes it very difficult to direct the light output with a precision such as to avoid dispersing the light in areas adjacent to the area to be illuminated and, consequently, penalising the energy savings of the system.
  • it is particularly important to assess and control the useful portion of the flow which is the fraction of the flow of the apparatus actually falling on the area to be illuminated and provides direct information about the amount of light that the lighting apparatus in question casts on the area of interest and outside of it.
  • the percentage of light flow directed to unintended areas lowers the energy yield of the lighting device and thus, in the final analysis, is a waste of energy to be avoided or at least limited.
  • WO 2012/011136 describes a lighting module comprising a reflector and at least two lighting sources or groups of lighting sources.
  • the reflector comprises a central part and two wings inclined with respect to the central part.
  • the lighting sources are arranged at the ends of the central part and are oriented, with respect to a system of reference coordinates C/ ⁇ , according to an angle C respectively comprised between 0° and 30° and between 150° and 180°, and according to an angle ⁇ , with respect to the vertical, comprised between 50° and 90°.
  • DE 10 2012 102 015 A1 discloses another lighting module of the prior art.
  • such a lighting module allows avoiding the use of TIR lenses, on the other hand, it requires the assembly of the sources on respective inclined planes, which obviously makes the structure of the lighting apparatus and its assembly more complex with respect to a configuration with the lighting sources mounted on a same plane.
  • the purpose of this invention is to provide a lighting module and a lighting apparatus able to eliminate the drawbacks mentioned above with reference to known art and, in particular, able to combine an optimal light output profile, efficient management of the power dissipated by the lighting sources used, and real simplicity of construction.
  • 100 indicates, in its entirety, the body of a lighting apparatus according to the invention, in particular for street lighting.
  • the apparatus body 100 comprises a support structure 1 and a lighting body 2 supported by such support structure 1.
  • the lighting body 2 comprises a plurality of lighting modules 10 placed one next to the other so as to form a row, or array, of lighting modules 10.
  • the lighting body 2 can also comprise several adjacent rows of modules, so as to form a matrix.
  • Each row of lighting modules 10 extends along a longitudinal axis X (hereinafter called the longitudinal module axis) that, in the case of an apparatus for street lighting, is the axis that identifies the direction that goes from the street edge towards the centre of the street.
  • X longitudinal axis X
  • Each individual lighting module 10 comprises two module portions 10' suitable to illuminate respective portions of an object, for example portions of a street surface.
  • the module portions 10' are equal to each other and symmetrical with respect to the longitudinal module axis X.
  • Each module portion 10' comprises a lighting source 12 and a respective reflector 14.
  • the lighting sources 12 of each lighting module 10 lie on a same source plane ⁇ , for example substantially parallel to the object to be illuminated, and are placed at the ends of the lighting module 10.
  • the lighting sources 12 are LED lighting sources, and can be constituted each by a single LED or by a group of LEDs.
  • the lighting sources are mounted on one or on respective electronic cards 12' that define the source plane ⁇ .
  • Each reflector 14 comprises a side wall 142, a first inclined plane 144 and a second inclined plane 146.
  • the side wall 142 extends parallel to the longitudinal module axis X and extends from the source plane ⁇ forming a parabolic surface (i.e., the profile of which corresponds to portion of a parabola) with parabola axis Y inclined with respect to the source plane ⁇ .
  • the first inclined plane 144 extends with increasing width from the lighting source 12 to near the longitudinal module axis X.
  • the second inclined plane 146 extends with increasing width from the lighting source 12 towards a front edge 102 of the light output opening of the lighting module 10.
  • This front edge 102 is preferably substantially orthogonal to the longitudinal module axis X.
  • the reflector 14 is also delimited, on the opposite side and preferably parallel to the front edge 102, by a rear wall 148 that extends from the source plane ⁇ .
  • this rear wall 148 form a parabolic surface, i.e., has a profile corresponding to a portion of a parabola, with parabola axis Z preferably inclined with respect to the source plane ⁇ .
  • the side wall 142 and the first inclined plane 144 determine the light distribution of the lighting source 12 in the plane C0-C180 of the coordinate system C/ ⁇ ( Figure 4 ); the real wall 148 and the second inclined plane 146 determine the light distribution of the lighting source 12 in the plane C90-C270 of the coordinate system C/ ⁇ ( Figure 5 ).
  • the reflectors 14 of each lighting module form a light emission window of substantially rectangular shape.
  • the lighting sources 12 are placed in correspondence of the two corners between the side walls 142 and the rear wall 148.
  • the projection of the side wall 142 on the source plane seen in plan view partially covers the lighting source 12. More precisely, the projection of the side wall 142 covers exactly half the lighting source 12, as shown in Figure 4 . This constructive choice allows obtaining the best uniformity of the light beam generated by the lighting source 12.
  • the axis Y of the parabola of the side wall 142 is inclined with respect the source axis W by an angle ⁇ comprised between 60° and 80°, preferably 70°.
  • each lighting source 12 is placed in the focus of the parabola defining the side wall 142.
  • the first inclined plane 144 is inclined with respect to the source axis W by an angle comprised between 65° and 85°, more preferably 77°.
  • the second inclined plane 146 is inclined with respect to the source axis W by an angle comprised between 60° and 80°, more preferably 67°.
  • the parabola axis Z of the rear wall 148 is inclined with respect to the source axis by an angle ⁇ comprised between 25° and 35°, more preferably 31°.
  • the first inclined planes 144 of the reflectors 14 of a same lighting module 10 are connected to each other by a central plane 16 parallel to the source plane ⁇ .
  • the lighting body 2 is formed by an array or by a matrix of lighting modules 10.
  • the side walls 142 of the reflectors 14 of all the lighting modules 10 are integrally formed in a single first frame element 20 that is fixed to the support body 1 and which bears the other elements of the reflectors 14, as described below.
  • a single second sawtooth element 22 which integrally forms all the second inclined planes 146 and rear walls 148 of the reflectors 14.
  • a third reflective element 25 which integrally forms the first inclined planes 144 and the central connecting plane 16.
  • the apparatus body 100 is fixed near the upper end of a pole 3.
  • the apparatus body 100 is connected to the pole 3 by means of a hollow ball joint 30 that slips over the end of pole 3 and which is fixed to this at a predetermined height, for example by means of one or more joint fixing screws 32.
  • the hollow ball joint 30 is formed by two halves that are juxtaposed and fixed together to embrace the pole 3.
  • the support body 1 is formed by two body parts, front 1', which supports the lighting body 2, and rear 1", which embrace the hollow ball joint 30 and which are fixed together, for example by means of body fixing screws.
  • the hollow ball joint 30 is provided with a front tooth 36 and a rear tooth 38 facing respectively towards the front body part 1' and towards the rear body part 1".
  • a front tooth 36 and a rear tooth 38 facing respectively towards the front body part 1' and towards the rear body part 1".
  • front body part 1' and in the rear body part 1" are formed respective front 37 and rear 39 tooth seats, suitable to be engaged by the front 36 and rear 38 teeth.
  • the front body part 1' being more extensive and therefore heavier than the rear body part 1"
  • the front tooth seat 37 is engaged by the upper side of the front tooth 36, while the rear tooth seat 39 is engaged from the lower side of the rear tooth 38.
  • the apparatus body 100 is then secured to the pole 3 only thanks to the interaction due to the weight force of the apparatus body 100 between the teeth of the hollow ball joint 30 and the respective tooth seats.
  • the same apparatus body 100 can be fixed to the pole 3 in a first configuration of use, wherein the apparatus body 100 is substantially orthogonal to the pole 3 ( Figure 12 ), or in a second configuration of use, inclined, for example by an angle of 10°, with respect to the first configuration of use ( Figure 13 ).
  • the front 36 and rear 38 teeth of the hollow ball joint 30 are formed in diametrically opposite positions with respect to the centre of the hollow ball joint 30 and rotated with respect to the horizontal diametral plane of the joint 30, for example by about 10°. Therefore, in a first installation configuration, the teeth 36, 38 are formed in such a way that the apparatus body 100 extends in a substantially horizontal position ( Figure 12 ).
  • a second installation configuration is obtained wherein the apparatus body 100 is inclined by about 10° with respect to a horizontal plane.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (13)

  1. Module d'éclairage (10), en particulier pour un appareil d'éclairage des rues, s'étendant entre deux extrémités de module symétriques par rapport à un axe de module (X) et définissant un bord avant (102) perpendiculaire à l'axe de module (X), ledit module d'éclairage (10) comprenant deux portions de module (10') adaptées pour éclairer des portions respectives d'un objet, lesdites portions de module (10') étant égales l'une à l'autre et symétriques par rapport à l'axe de module (X), chaque portion de module comprenant une source d'éclairage (12) et un réflecteur correspondant (14), dans lequel lesdites sources d'éclairage (12) reposent sur un même plan de source (α), ont un axe de source (W) perpendiculaire au plan de source (α) et sont placées au niveau desdites extrémités de module, chaque réflecteur comprenant une paroi latérale (142) qui s'étend parallèlement à l'axe de module (X) et qui s'étend à partir du plan de source (α) de sorte à former une surface parabolique avec un axe de parabole (Y) incliné par rapport au plan de source (α), un premier plan incliné (144) qui s'étend avec une largeur croissante à partir de la source d'éclairage (12) jusqu'à proximité de l'axe de module (X), et un second plan incliné (146) qui s'étend avec une largeur croissante à partir de la source d'éclairage (12) vers le bord avant (102) du module d'éclairage (10) de manière sensiblement perpendiculaire à l'axe de module (X).
  2. Module d'éclairage (10) selon la revendication 1, dans lequel la projection dans le plan de la paroi latérale (142) sur le plan de source (α) recouvre partiellement la source d'éclairage (12).
  3. Module d'éclairage (10) selon la revendication 1 ou 2, dans lequel, l'axe de parabole (Y) de la paroi latérale (142) est incliné par rapport audit axe de source (W) d'un angle allant de 60° à 80°.
  4. Module d'éclairage (10) selon l'une quelconque des revendications précédentes, dans lequel chaque source d'éclairage (12) est placée dans le foyer de la parabole définissant la paroi latérale (142).
  5. Module d'éclairage (10) selon l'une quelconque des revendications précédentes, dans lequel, le premier plan incliné (144) est incliné par rapport audit axe de source (W) d'un angle allant de 65° à 85°.
  6. Module d'éclairage (10) selon l'une quelconque des revendications précédentes, dans lequel, le second plan incliné (146) est incliné par rapport audit axe de source (W) d'un angle allant de 60° à 80°.
  7. Module d'éclairage (10) selon l'une quelconque des revendications précédentes, dans lequel chaque réflecteur (14) est délimité, sur la partie opposée et parallèle par rapport audit bord avant (102), par une paroi arrière (148) qui s'étend à partir du plan de source (α) de sorte à former une surface parabolique.
  8. Module d'éclairage (10) selon l'une quelconque des revendications précédentes, dans lequel, l'axe de parabole (Z) de la paroi arrière (148) est incliné par rapport audit axe de source (W) d'un angle allant de 25° à 35°.
  9. Module d'éclairage (10) selon l'une quelconque des revendications précédentes, dans lequel les premiers plans inclinés (144) des réflecteurs (14) sont reliés l'un à l'autre par un plan central (16) parallèle au plan de source (α).
  10. Module d'éclairage (10) selon l'une quelconque des revendications précédentes, dans lequel les réflecteurs (14) forment une fenêtre d'émission de lumière de forme sensiblement rectangulaire, les sources d'éclairage (12) étant placées au niveau de deux coins adjacents de ladite fenêtre.
  11. Module d'éclairage (10) selon l'une quelconque des revendications précédentes, dans lequel les sources d'éclairage (12) sont des sources à DEL, et dans lequel ledit plan de source (α) est formé par une ou par des carte(s) électronique(s) respective(s) (12').
  12. Appareil d'éclairage (100), en particulier pour l'éclairage des rues, comprenant au moins une rangée de modules d'éclairage (10) selon l'une quelconque des revendications précédentes, alignés l'un avec l'autre le long de l'axe de module (X).
  13. Appareil (100) selon la revendication précédente, dans lequel un premier élément de cadre (20) forme intégralement les parois latérales (142) des réflecteurs (14) des modules d'éclairage (10), un second élément en dents de scie (22) forme intégralement les seconds plans inclinés (146) et les parois arrière (148), et de la rangée de modules d'éclairage (10) et les premiers plans inclinés (144) de la rangée de modules d'éclairage (10), et dans lequel sur chaque portion de l'élément en dents de scie (22) est fixé un troisième élément réfléchissant (25) qui forme intégralement les premiers plans inclinés (144) et le plan de liaison central (16).
EP16779676.2A 2015-04-14 2016-03-24 Module d'éclairage Active EP3283818B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBS20150063 2015-04-14
PCT/IB2016/051684 WO2016166624A2 (fr) 2015-04-14 2016-03-24 Module d'éclairage

Publications (2)

Publication Number Publication Date
EP3283818A2 EP3283818A2 (fr) 2018-02-21
EP3283818B1 true EP3283818B1 (fr) 2020-09-23

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Application Number Title Priority Date Filing Date
EP16779676.2A Active EP3283818B1 (fr) 2015-04-14 2016-03-24 Module d'éclairage

Country Status (2)

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EP (1) EP3283818B1 (fr)
WO (1) WO2016166624A2 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7828456B2 (en) * 2007-10-17 2010-11-09 Lsi Industries, Inc. Roadway luminaire and methods of use
DE102012102015A1 (de) * 2012-03-09 2013-09-12 Selux Aktiengesellschaft Außenleuchte
DE102013105612B4 (de) * 2013-05-31 2016-12-15 BöSha Technische Produkte GmbH & Co. KG Beleuchtungskörper einer Leuchte, insbesondere einer Straßenleuchte, und Leuchte mit mindestens einem Beleuchtungskörper

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
WO2016166624A2 (fr) 2016-10-20
EP3283818A2 (fr) 2018-02-21
WO2016166624A3 (fr) 2017-01-12

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