EP1945007B1 - Verfahren zur Leistungsoptimierung von LED-Beleuchtungsvorrichtungen - Google Patents

Verfahren zur Leistungsoptimierung von LED-Beleuchtungsvorrichtungen Download PDF

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Publication number
EP1945007B1
EP1945007B1 EP07100432A EP07100432A EP1945007B1 EP 1945007 B1 EP1945007 B1 EP 1945007B1 EP 07100432 A EP07100432 A EP 07100432A EP 07100432 A EP07100432 A EP 07100432A EP 1945007 B1 EP1945007 B1 EP 1945007B1
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EP
European Patent Office
Prior art keywords
led
light sources
module
light
secondary optics
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EP07100432A
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English (en)
French (fr)
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EP1945007A1 (de
Inventor
Marc Frankinet
Vincent Lang
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Schreder SA
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Schreder SA
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Priority to EP07100432A priority Critical patent/EP1945007B1/de
Priority to ES07100432T priority patent/ES2392354T3/es
Publication of EP1945007A1 publication Critical patent/EP1945007A1/de
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    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • 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

  • the invention relates to the area of lighting, and WO 99/50596 is recognised as the closest prior art. More particularly the invention relates to the emerging application of Light Emitting Diodes (LED's) for lighting purposes in general, and more specifically for street lighting purposes. LED's are considered by many to represent the future for lighting. These new light sources involve new constraints and new problems in respect of development and production of lighting devices. The conceivers of the present invention have investigated these constraints and problems with an innovative perspective so as to develop a new concept for designing LED-based lighting devices and for controlling such lighting devices.
  • LED's Light Emitting Diodes
  • a first innovative approach in this new concept involves the principle of "filling a photometric volume”.
  • software assisted analysis to various combinations of LED-light sources of different types with individual (secondary) optical means (such as lenses, etc.) of different types (using the photometric properties of the light sources and of the optical means as “variables"), it becomes possible to optimise the light distribution according to a desired pattern (or theoretical "lighting matrix") for a given application.
  • the "dimming" capability of LED-light sources provides a useful further variable in this context.
  • the basis from which all graphical documents are derived is the intensity table of lighting devices ("luminaries").
  • the intensity table itself is presented in accordance with the standard system of coordinates, named C-gamma.
  • CIE Commission Internationale de I'Eclairage
  • Measurements are taken each 10° in the C-planes and each 1° in gamma angles, from 0° (downward vertical line) to 99° (9° above the horizontal) in one type of goniophotometer; or from 0° up to 180° when the upper flux is also measured, with a newer type of mirror goniophotometer.
  • the result, from the first type photometer, is a table with 36 columns (one per C - plane) and 100 rows (one per ⁇ angle) and containing 3600 intensity values. This complete measurement guarantees a high level of accuracy.
  • the photometric tests are generally made with the luminaire mounted horizontally. A horizontal position is defined as follows :
  • each C-plane can be presented graphically under a system of polar coordinates (cf. Figure 2 showing the polar diagram of a specific LED-light source).
  • Figure 2 showing the polar diagram of a specific LED-light source.
  • the benefit of this presentation is that we can appreciate very quickly (with a minimum of experience) if the light distribution is suitable or not to answer an actual lighting problem.
  • the polar curves of intensity are generally presented in the 6 characteristic half C-planes :
  • the horizontal scale of the diagram (see figure 4 ) is graduated in terms of the mounting height of the luminaire in order to make the diagram valid for all mounting heights. These horizontal distances are measured across the road, on the intersection of the C-planes 90° and 270° with the ground.
  • the vertical scale is graduated in percent of the rated flux of the lamp fitted inside the luminaire.
  • the luminaire is located on the horizontal scale at OH.
  • the letter K is used to designate the utilization factor.
  • the diagram comprises two curves :
  • the proportion of flux in front is now better than with the LPS lamp.
  • the luminaries equipped with HPS clear tubular lamps are able to concentrate more than 40% of the flux of the lamp on the same width road, with minimum of back flux.
  • the very small size of the lamp's arc tube makes it possible to adjust the light distribution to particular needs.
  • the total efficiency of the luminaries (roughly K1 + K2) also depends on the geometrical sizes of the lamps. The total efficiency increases when the lamp becomes smaller.
  • Each curve of the isolux diagram joins all the points which have the same illuminance values (in lux).
  • the luminaire is located at the centre of the diagram.
  • a conversion factor to the value read off the diagram, in lux. This conversion factor depends on :
  • LDU Light Distribution Unit
  • LDU's together provide a global light distribution which can be suitable in a lighting device, such as a (street) lighting device or "luminaire, comprising multiple LED-light sources.
  • the luminaire can be seen as composed of facets emitting light in some direction.
  • a typical or desired light distribution according to a specific pattern (or theoretical "lighting matrix"), as illustrated in figure 7 can thus be “build” by adding up specific LDU's in the right direction (plane C and angle ⁇ ) as illustrated by figure 8 .
  • the chosen types, directions and numbers of LDU's will define the global light distribution.
  • the invention there for provides a method for optimising the performance of a (street) lighting device involving multiple LED-light sources within a common frame, wherein specific LED-light sources are selected from a plurality of types of LED-light sources, specific secondary optics are selected from a plurality of types of secondary optics, for each selected LED light source, and specific orientations are selected for each of those LED-light sources and/or secondary optics, wherein variables representing the light distribution in function of direction coordinates are associated to each LED light source and its secondary optics, and wherein simulations of cumulative variables for multiple combinations of selected LED-light sources, selected secondary optics and selected orientations, are compared, using software assisted calculations, with selected global light distributions, so as to designate combinations of selected LED-light sources, selected secondary optics and selected orientations showing an optimal fit with said selected global light distributions.
  • the variables associated to each LED light source and its secondary optics are defined in accordance with
  • all the LED-light sources, secondary optics and necessary electronic components are mounted on a (flat) flexible print board (as illustrated by figure 9 ) that can be placed on and adapted to any kind of mechanical support structure / three dimensional base structure, fixing the orientation of the LED-light sources (as illustrated by figure 10 ).
  • the mechanical support structure can, for instance, involve a bended metal sheet, a deep drawn metal structure, a die cast metal structure, or a machined aluminium structure.
  • the invention thus also specifically provides a first new method for designing and/ or making / manufacturing (street) lighting devices comprising multiple LED-sources within a common frame, with at least part of said LED-light sources being provided to a semi-flexible printed circuit, which method comprises the steps of providing one or more types of three dimensional base structures for lighting devices, providing one or more types of semi-flexible printed circuits adapted to receive the LED-light sources of the lighting device according to selected directions of the light sources, and applying one semi flexible printed circuit on one three dimensional base structure of a type corresponding to said one semi flexible printed circuit, so as to provide a defined three dimensional configuration of the LED-light sources' positions and orientations.
  • the semi-flexible printed circuits may very suitably involve several modules for one or more LED-light sources, with the capability to have each light source within one module directed into a selected direction and/or provided with individual optical means, and with each module having the capability to be bended according to a selected direction.
  • the invention proposes the use of a "LED-modules on mechanical structures" ("Modular concept").
  • This modular concept may suitably involve LED-modules, composed of
  • the invention thus also specifically provides a second new method for designing and/ or making / manufacturing (street) lighting devices comprising multiple LED-sources within a common frame, with at least part of said LED-light sources being provided on modules, which method comprises providing LED-modules composed of a heat sink structure, a print board, LED-light sources, necessary electronic components, and optional protection and/or tightness features, and a mechanical structure, composed of a three dimensional main structure providing appropriate orientation for each module, a protector structure for said modules, with optionally a "chimney" zone to evacuate heat.
  • the invention also provides a first new type of (street) lighting apparatus comprising multiple LED-light sources within a common frame (/ on a common support structure) with at least part of said LED-light sources being provided to a semi-flexible printed circuit, which apparatus comprises several modules of one or more LED-light sources, each module being a separately bendable part of a common semi-flexible printed circuit, each light source within one module being directed into a selected direction, and/or being provided with individual optical means, and each module being directed into a selected direction, whereas the power feed to each module, optionally each light source, is separately regulated by software controlled means.
  • the separately bendable parts of a common semi-flexible printed circuit defining said several modules are applied on a three dimensional base structure so as to provide a defined three dimensional configuration of the LED-light sources' positions and orientations.
  • the invention also provides a second new type of (street) lighting apparatus comprising multiple LED-light sources within a common frame (/ on a common support structure) with at least part of said LED-light sources being provided on modules, which apparatus comprises LED-modules composed of a heat sink structure, a print board, LED-light sources, necessary electronic components, and optional protection and/or tightness features, and a mechanical structure, composed of a three dimensional main structure providing appropriate orientation for each module, a protector structure for said modules, with optionally a "chimney" zone to evacuate heat.
  • a second new type of (street) lighting apparatus comprising multiple LED-light sources within a common frame (/ on a common support structure) with at least part of said LED-light sources being provided on modules, which apparatus comprises LED-modules composed of a heat sink structure, a print board, LED-light sources, necessary electronic components, and optional protection and/or tightness features, and a mechanical structure, composed of a three dimensional main structure providing appropriate orientation for each module, a protector structure for said modules,
  • the invention furthermore specifically provides a process for controlling a lighting device, in particular a street lighting device, involving multiple LED-light sources within a common frame, using several modules of one or more LED-light sources, each light source within one module being directed into a selected direction and/or provided with individual optical means, and each module being directed into a selected direction, whereas the power feed to each module, optionally each light source, is separately controlled.
  • the invention also specifically provides a software assisted method for controlling the performance of (street) lighting devices involving multiple LED-light sources within a common frame, wherein each lighting device comprises several modules of one or more LED-light sources, each light source within one module being directed into a selected direction and/or provided with individual optical means, and each module being directed into a selected direction, whereas the power feed to each module, optionally each light source, is separately regulated by software controlled means.
  • the manufacturing method, apparatus, control process and, respectively, software assisted method, according to the invention may involve one or more of the following further features :
  • This provides for optimal adaptation of the light distribution to various parameters, based on the facets concept and by controlling the light intensity of some LED-light sources in some directions, with even the possibility to modify the colour of the emitted light by using different types of coloured LED-light sources or RGB LED sources.
  • Such modification of the light distribution and / or colour distribution can thus adapt the photometrical performance of a lighting device according to many parameters, such as

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Claims (8)

  1. Verfahren zur Optimierung der Leistung einer Beleuchtungsvorrichtung, die mehrere LED-Lichtquellen innerhalb eines gemeinsamen Rahmens umfasst, wobei spezifische LED-Lichtquellen aus einer Mehrzahl von Typen von LED-Lichtquellen ausgewählt werden, spezifische sekundäre Optiken aus einer Mehrzahl von Typen von sekundären Optiken für jede ausgewählte LED-Lichtquelle ausgewählt werden und spezifische Orientierungen für jede der LED-Lichtquellen und/oder sekundären Optiken ausgewählt werden, dadurch gekennzeichnet, dass Variable, welche die Lichtverteilung in Abhängigkeit von Richtungskoordinaten darstellen, jeder LED-Lichtquelle und ihren sekundären Optiken gemäß einem C-γ-Koordinatensystem, Intensitätstabellen, Polardiagrammen von Lichtstärke, kartesischen Diagrammen von Lichtstärke, Nutzungsfaktorkurven und/oder Isolux-Diagrammen zugeordnet werden, und dadurch, dass Simulationen von kumulativen Variablen für mehrere Kombinationen von ausgewählten LED-Lichtquellen, ausgewählten sekundären Optiken und ausgewählten Orientierungen unter Verwendung von softwaregestützten Berechnungen, die ausgewählte Lichtverteilungseinheiten summieren, die jeweils die Lichtverteilung einer der ausgewählten LED-Lichtquellen kombiniert mit einer jeweiligen der ausgewählten sekundären Optiken unter Berücksichtigung der ausgewählten Orientierungen darstellen, mit ausgewählten globalen Lichtverteilungen verglichen werden, um Kombinationen von ausgewählten LED-Lichtquellen, ausgewählten Optiken und ausgewählten Orientierungen zu bestimmen, die eine optimale Passung mit den ausgewählten globalen Lichtverteilungen zeigen.
  2. Verfahren nach Anspruch 1 zur Optimierung der Leistung einer Straßenbeleuchtungsvorrichtung, die wenigstens einen Teil der LED-Lichtquellen für eine halbflexible gedruckte Schaltung bereitgestellt umfasst, dadurch gekennzeichnet, dass die Vorrichtung mehrere Module einer oder mehrerer LED-Lichtquellen umfasst, wobei jedes Modul ein separat biegsames Teil einer gemeinsamen halbflexiblen gedruckten Schaltung ist, jede Lichtquelle innerhalb eines Moduls in eine ausgewählte Richtung gerichtet und/oder mit individuellen optischen Mittel versehen ist, und jedes Modul in eine ausgewählte Richtung gerichtet ist, während der Strom, der jedem Modul, optional jeder Lichtquelle, zugeführt wird, durch softwaregesteuerte Mittel separat geregelt wird.
  3. Leistungsoptimierungsverfahren nach Anspruch 2, dadurch gekennzeichnet, dass die separat biegsamen Teile einer gemeinsamen halbflexiblen gedruckten Schaltung, welche die mehreren Module definieren, auf eine dreidimensionale Basisstruktur angewendet werden, um eine definierte dreidimensionale Konfiguration der Positionen und Orientierungen der LED-Lichtquellen bereitzustellen.
  4. Leistungsoptimierungsverfahren nach einem der Ansprüche 2 und 3, dadurch gekennzeichnet, dass die halbflexiblen gedruckten Schaltungen mehrere Module für eine oder mehrere LED-Lichtquellen mit der Fähigkeit umfassen, jede Lichtquelle innerhalb eines Moduls in eine ausgewählte Richtung gerichtet und/oder mit individuellen optischen Mittel versehen aufzuweisen, und wobei jedes Modul die Fähigkeit aufweist, gemäß einer ausgewählten Richtung gebogen zu werden.
  5. Verfahren nach Anspruch 1, zur Optimierung der Leistung einer Straßenbeleuchtungsvorrichtung, die wenigstens einen Teil der LED-Lichtquellen auf Modulen bereitgestellt umfasst, dadurch gekennzeichnet, dass die Vorrichtung umfasst :
    LED-Module, die sich aus einer Wärmesenkestruktur, einer gedruckten Leiterplatte, LED-Lichtquellen, erforderlichen elektronischen Komponenten und optionalen Schutz- und/oder Dichtheitsmerkmalen zusammensetzen, und
    eine mechanische Struktur, die sich aus einer dreidimensionalen Hauptstruktur, die eine geeignete Orientierung für jedes Modul bereitstellt, und einer Schutzstruktur für die Module optional mit einer "Kamin"-Zone zum Abführen von Wärme zusammensetzt.
  6. Leistungsoptimierungsverfahren nach Anspruch 5, dadurch gekennzeichnet, dass die Lichtquellen in einem Modul in ausgewählte zusammenwirkende Richtungen gerichtet werden.
  7. Leistungsoptimierungsverfahren nach einem der Ansprüche 5 und 6, dadurch gekennzeichnet, dass die Stromzufuhr zu jeder Lichtquelle, optional zu jedem Modul, durch softwaregesteuerte Mittel separat geregelt wird.
  8. Leistungsoptimierungsverfahren nach einem der Ansprüche 2 und 7, dadurch gekennzeichnet, dass die Stromzufuhr zu jeder Lichtquelle, optional zu jedem Modul, in Bezug auf die Amperezahl ("Dimmbarkeit") separat gesteuert wird.
EP07100432A 2007-01-11 2007-01-11 Verfahren zur Leistungsoptimierung von LED-Beleuchtungsvorrichtungen Active EP1945007B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP07100432A EP1945007B1 (de) 2007-01-11 2007-01-11 Verfahren zur Leistungsoptimierung von LED-Beleuchtungsvorrichtungen
ES07100432T ES2392354T3 (es) 2007-01-11 2007-01-11 Método de optimización del rendimiento de dispositivos de iluminación LED

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07100432A EP1945007B1 (de) 2007-01-11 2007-01-11 Verfahren zur Leistungsoptimierung von LED-Beleuchtungsvorrichtungen

Publications (2)

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EP1945007A1 EP1945007A1 (de) 2008-07-16
EP1945007B1 true EP1945007B1 (de) 2012-09-19

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPD20080068A1 (it) * 2008-02-26 2009-08-27 Easy Internat S R L Lampada a led e metodo per la sua progettazione
EP2133622A1 (de) 2008-06-12 2009-12-16 Schreder Straßenbeleuchtungsvorrichtung mit mehreren LED-Lichtquellen
CN201246616Y (zh) * 2008-08-19 2009-05-27 鑫谷光电股份有限公司 一种新型大功率led烛型灯
ITBA20090011A1 (it) * 2009-03-14 2010-09-15 Sud Segnal Srl Sistema illuminante per illuminazione pubblica
EP2365740B1 (de) * 2010-03-12 2018-08-22 Omron Corporation Beleuchtungsvorrichtung
HU230914B1 (hu) * 2010-06-09 2019-02-28 Wemont Kft. Eljárás elemi fényforrásokat optimalizált konfigurációban tartalmazó világítóeszköz készítésére, továbbá ilyen világítóeszköz részét képező hordozólemez és világítóeszköz

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RU2137978C1 (ru) * 1998-03-26 1999-09-20 Открытое акционерное общество "ЛОМО" Осветительное устройство с несимметричным распределением светового потока относительно оптической оси
JPH11329022A (ja) * 1998-05-22 1999-11-30 Stanley Electric Co Ltd 車両用信号灯具
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JP2005196983A (ja) * 2003-12-26 2005-07-21 Matsushita Electric Works Ltd 発光ダイオードを用いた照明器具
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ES2392354T3 (es) 2012-12-10
EP1945007A1 (de) 2008-07-16

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