WO2019203760A2 - Système d'éclairage basé sur le blocage de la visée et la réflexion multiple pour sources de lumière ponctuelle et directionnelle - Google Patents

Système d'éclairage basé sur le blocage de la visée et la réflexion multiple pour sources de lumière ponctuelle et directionnelle Download PDF

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Publication number
WO2019203760A2
WO2019203760A2 PCT/TR2019/050023 TR2019050023W WO2019203760A2 WO 2019203760 A2 WO2019203760 A2 WO 2019203760A2 TR 2019050023 W TR2019050023 W TR 2019050023W WO 2019203760 A2 WO2019203760 A2 WO 2019203760A2
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WIPO (PCT)
Prior art keywords
lighting
point
light
cross
cell
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PCT/TR2019/050023
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English (en)
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WO2019203760A3 (fr
Inventor
Refik KAHRAMAN
Original Assignee
Teknolüks Endüstri̇yel Metal Ve Plasti̇k Sanayi̇ Ti̇caret Li̇mi̇ted Şi̇rketi̇
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Application filed by Teknolüks Endüstri̇yel Metal Ve Plasti̇k Sanayi̇ Ti̇caret Li̇mi̇ted Şi̇rketi̇ filed Critical Teknolüks Endüstri̇yel Metal Ve Plasti̇k Sanayi̇ Ti̇caret Li̇mi̇ted Şi̇rketi̇
Priority to TR2020/04240U priority Critical patent/TR202004240U5/tr
Publication of WO2019203760A2 publication Critical patent/WO2019203760A2/fr
Publication of WO2019203760A3 publication Critical patent/WO2019203760A3/fr

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Classifications

    • 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/06—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using crossed laminae or strips, e.g. grid-shaped louvers; using lattices or honeycombs
    • 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
    • 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
    • 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • 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 is related to a high level of energy efficient modular lighting system based on multiple reflection and sight blocking, developed particularly for point/directional light emitting LEDs and other light sources of the same characteristics, generating convenient light properties (e.g. with respect to glare , color rendering , homogeneity) and providing light distribution control in line with the standards required by all applicable industrial lighting fields (indoor / office-school-hospital- supermarket etc. lighting, road and tunnel lighting, park and garden lighting, architectural lighting etc.) where point/directional light sources / LEDs are used.
  • the invention has particularly been developed for point (emitting intensive light from a small surface) and directional (emitting light in one direction) light sources.
  • the industrially applicable forms of the mentioned point/directional light sources currently used in artificial lighting are the LED light sources.
  • Point/directional light sources and consequently LED light sources are used in the subject system of our invention.
  • LEDs Light emitting diodes
  • LEDs Light emitting diodes
  • directional not all or omni-directional
  • highly intensive light have made most of the conventional luminaire optical components (opal diffusers - prismatic diffusers - parabolic aluminum reflectors - metalized plastic louvers...) functionless due to their unsuitability and incapacity for controlling light sources of these forms.
  • the light and light grid are said to be placed adjacent the wall such that the wall washing quadrant is oriented toward the wall to illuminate the wall and the low direct glare distribution quadrant is said to be oriented toward the interior of the room.
  • the wall washing quadrant was supposed to eliminate the "cave effect" at the juncture of the adjacent wall and the ceiling while the low direct glare quadrant was supposed to provide desired illumination directed into the adjacent room. It is also claimed in the said patent document that variations of the grid arrangement allowed for uniform lighting of corners as well as end and side walls within a room.
  • the light source of the system was a metal halide lamp installed horizontally in the luminaire body and positioned parallel to the underlaid louver grid.
  • the drawings in the patent text also depicts a metal halide (or similar) lamp as the light source of the system.
  • a metal halide lamp installed horizontally in the luminaire body and positioned parallel to the underlaid louver grid.
  • the invention intends to present solutions for following problems:
  • the light losses are very high (opal diffusers: 25-35% / transparent micro- prismatic diffusers: 12-18%) due to plastic diffusers inevitably needed as integral part of the system to decrease intensity and reduce glare.
  • plastic diffusers are not needed in the invented system in order to solve the above mentioned (1 st ) problem of glare, the operational light losses are considerably low.
  • the PCB surface is coated with white reflective film having +98% total reflection, in order to minimize the possible losses due to substantial back reflections mainly from sight blocking cross jointed 1 st . reflection lamella and partly from the other lamellas forming the louver cell walls. According to the definitive lighting laboratory test results, the luminous efficacies achieved with the first prototypes are:
  • PROBLEM 3 Distribution control of the point light (LED) radiation:
  • the 4 th .group of industrially accepted, LED based lighting systems depicted above, provide angular light distribution control at acceptably good levels and maintain relatively high efficiency levels.
  • this performance can be realized only in certain lighting applications and at high unit costs.
  • the subject system of the invention offers: a. Incomparably superior results with respect to the first two LED based general lighting systems depicted above, (back-lit panel and edge-lit panel), in :
  • system cell walls are made up of the articulation of cross-blanked and/or perpendicularly blanked lamellas to each other in parallel, successive, angular and/or perpendicular sequences, said lamella surfaces providing a very high reflection in various types for the visible spectrum of electromagnetic radiation used in artificial lighting due to its perceptibility by the human eye;
  • system louver cell top is entirely covered with PCB surfaces on which the point/directional light source units /LEDs are assembled;
  • the PCB surface that constitutes the closed ceiling of the system is coated with a polymer-based reflective film having very high reflection values in visible spectrum of electromagnetic radiation (or other materials of the same properties) so as to leave uncovered only the point/directional light sources (LEDs) assembled on it , in order to reroute the light beams reflected back from the surfaces of the system cell lamellas , into the target lighting area with minimum possible losses;
  • a polymer-based reflective film having very high reflection values in visible spectrum of electromagnetic radiation (or other materials of the same properties) so as to leave uncovered only the point/directional light sources (LEDs) assembled on it , in order to reroute the light beams reflected back from the surfaces of the system cell lamellas , into the target lighting area with minimum possible losses;
  • System comprises one or more than one cells , the walls of which are all closed except the one facing the target lighting area , each (cell) capable to functioning as an independent luminaire, and of which , the cell wall lamella finishes, sizes, forms, articulation angles, the positions of point / directional light sources assembled on PCB which forms the top cover of the system, all creating the functional parameters of the system, acting either individually or in interaction with each other in the system so as to contribute the system to function in line with the target lighting objectives to control light intensity , glare, beams and distribution.
  • Figure 1 shows the elements which constitute the said system of the invention.
  • FIG. 2 shows top and side view of PCB without reflective film, onto which point/directional light source (LED) units are assembled.
  • LED point/directional light source
  • FIG 3 shows top and side view of reflective film laminated PCB onto which point/directional light source (LED) units are assembled.
  • LED point/directional light source
  • Figure 4 shows the reflections of the light, back from highly reflective (+98% total reflection) white polymer (pet) film laminated on PCB surface.
  • Figure 5 shows vertical side wall cell lamella - cross blanked in two asymmetrical directions.
  • Figure 6 shows crosswise inserted lamella of the sight-block louver system or the lamella in both directions of the standard perpendicular louver system - lamella with perpendicular articulation blanks.
  • Figure 7.1 shows angularly jointed lamellas / louver system.
  • Figure 7.2 shows perpendicularly jointed lamellas / louver system.
  • Figure 8.1 shows the lighting louver system formed by angularly jointed lamellas.
  • Figure 8.2 shows the lighting louver system formed by perpendicularly jointed lamellas.
  • Figure 9 shows table giving reflection type and values from perpendicular and cross lamella surfaces which are coated through PVD (positive vapor deposition) method either with pure aluminum (having +95% total reflection) or pure silver (having +98% total reflection) and the following graph shows the light losses after each reflection from surfaces of different reflection properties.
  • Figure 10 shows the images and light reflection characteristics of the PVD coated specular, semi- specular and luminal matte surfaced materials used for the perpendicular and cross (angular) cell wall lamellas of the system.
  • Figure 11.1 shows the layout of PCB in the form to entirely cover the top of the cell made up of angularly intersecting cross and perpendicular blanked lamellas so as to confine each point/directional light source in a separate cell.
  • Figure 11.2 shows the layout of PCB in the form to entirely cover the top of the cell made up of perpendicularly intersecting jointed lamellas so as to confine each point/directional light source in a separate cell.
  • Figures 12.1 , 12.2 show intracellular reflections and extracellular light distribution of the cross jointed cell formations depicted at figure 1 1 .1 and perpendicular jointed cell formations depicted at figure 1 1 .2
  • Figures 13.1 , 13.2, 13.3.1 , 13.3.2, 13.3.3, 13.3.4, 13.3.5 show how the light distribution and beam angles directly and light intensity indirectly could be controlled by changing the assembly positions of the point/directional light sources (LEDs) on reflective film laminated PCB, covering the cell top, in directions towards either of the consecutive angled / cross jointed lamellas.
  • LEDs point/directional light sources
  • Figures 14.1 , 14.2, 14.3, show the images related with shortening the width of the first cross lamella in the cell.
  • Figures 15.1 , 15.2, 15.3, show the images related with shortening the width of the first cross lamella and extending the width of the opposite second cross lamella in the cell.
  • Figures 16.1 , 16.2, 16.3, show the images related with the bending of the extended part of the second cross lamella in the cell at various angles at one or more points, to one or more angles towards the light source.
  • Figures 17.1 , 17.2, 17.3, show the images related with creating asymmetrically light emitting luminaire by using only half of the two way cross blanked perpendicular cell wall lamellas and by shortening the width of the first cross lamella in the cell system with cross jointed lamellas.
  • Figures 18.1 , 18.2, 18.3, 18.4, 18.5, show the images related with creating asymmetrically light emitting luminaire in the cell system with perpendicularly jointed lamellas, by bringing the light source in the diagonal center point of the cell top cover (PCB), closer towards one of the side walls (with an asymmetrical distribution in the direction opposite to this wall ) and by extending and/or by bending this side wall in the direction of the light source either with or without extending this specific side wall and/or by shortening the opposite side wall.
  • PCB cell top cover
  • PCB printed circuit board
  • This invention relates to a high level of energy efficient modular lighting system based on multiple reflection and sight blocking, developed particularly for point - directional light emitting LEDs (2) and other light sources of the same characteristics , generating convenient light properties (e.g. with respect to glare , color rendering , homogeneity) and providing light distribution control in line with the standards required by all applicable lighting fields (indoor / office-school-hospital-supermarket etc. lighting, road and tunnel lighting, park and garden lighting, architectural lighting etc.) where point/directional light sources / LEDs are used.
  • the invented lighting system includes:
  • the point/directional light sources (2) producing the light required for the system.
  • These light sources are assembled on the PCB (1 ) and the position of them in the system as a controllable and variable parameter in co-ordination with the other parameters of the system, provides the control of light distribution and beam angles directly and glare indirectly;
  • top and bottom open grids/cells are constituted by the articulation of the cross-blanked lamellas (4) with the perpendicular-blanked lamellas (5,6) ( see figure 7.1 ) or by the articulation of identical perpendicular-blanked lamellas (5) with each other ( see figure 7.2 ) and the tops of these cells are completely closed with reflective film (3) laminated PCBs (1 ) on which proper point/directional light sources (2) are assembled in the position fitting for the purpose of the target lighting objectives , so that only the bottom surfaces of the cells facing the target lighting area remain open (see figures 1 1 .1 , 1 1 .2, 12.1 , 12.2).
  • each point/directional light source (2) confined in a separate cell can be controlled as an independent lighting fixture.
  • the lighting system composed of independently functioning cells / modules may consist of a single cell which may function as a low power but competent luminaire, or it may consist of hundreds and even thousands of cells / modules in accordance with the target lighting power, purpose and function simply by extending the lengths of lamellas (4,5,6) accordingly (see figures 7.1 , 7.2, 8.1 , 8.2)
  • the mentioned lamellas (4, 5, 6) are utilized to control light distribution at high angles and to prevent the direct, uncontrolled and highly intensive emission of important part (+75%) of light generated by the point/directional light sources (2) towards the target lighting area in cross jointed louver type (see figures 7.1 , 8.1 ) .
  • the intersecting identical lamellas (5) forming the cell walls are used for restricting the light distribution at high angles and/or to canalize it towards the direction in accordance with the target lighting purposes (see figures 7.2 , 8.2) .
  • the invention provides light distribution control and light intensity / glare control by means of sight blocking and multi-reflection, it generates a much higher number of reflections than all other existing LED lighting applications.
  • each reflection also means loss of light, it is critically important that all reflection surfaces (the cross and vertical lamellas (4, 5, 6) and PCB (1 ) surfaces) in the system should have a very low ( ⁇ 2%) light loss / absorption in each reflection.
  • this feature could be achieved with PVD pure aluminum and PVD silver coated surfaces or high reflection polymer films which have already been used extensively in some LED lighting systems (e.g. spot lights - parabolic reflectors - TIR lenses) as well as prior lighting systems using fluorescent or other discharge lamps.
  • the chart (efficiency curve as per number of reflections) in figure 9 clearly shows that the efficiency may decrease dramatically unless such a high reflection is provided.
  • the subject lighting system of the invention may use specular, semi-specular, luminal matte and patterned PVD reflective materials as the lamella (4, 5, 6) surfaces, wherein: a. Specular surfaces : provide point light reflection
  • the lamellas (4, 5, 6) can be defined:
  • perpendicularly blanked / cross jointed lamella - reflection surface faces diagonally upward, towards point/directional light source (2) ; perpendicularly blanked 1 st .
  • each lamellas (4, 5, 6) having different surface finishes e.g. cross blanked- perpendicularly jointed lamella (4):matt / perpendicularly blanked-cross jointed 1 st .
  • Reflection lamella (6) semi-specular so as to provide varied light characteristics and distributions according to the target lighting objectives.
  • the light distribution and beam angles can directly be controlled and the light intensity can indirectly be controlled by shifting the positions of the point/directional light resources (2) assembled on the reflective film (3) laminated PCB (1 ) covering the cell top completely, from the center position, in the direction towards either of the perpendicular blanked cross lamellas (5, 6) in the system (see figure 13.1 ).
  • this function utilizable, which does not exist / is not foreseen and used in any of the existing general LED lighting applications, a new parameter / factor has been put in use, in the direct control of light distribution and beam angles and indirect control of light intensity and glare.
  • point/directional light sources (2) in a lighting system with cross-jointed lamellas, causes a critical optical / light distribution problem which does not occur with the usage of the surface / extended / spherical / omni-directional light sources:
  • the light of point and directional nature leaves the closed cross-jointed cell system formed by the lamellas (4, 5, 6) and distributed into the lighting area in 0 -180° main axis (and partially in the adjacent 30-210° and 60-240° axes as well), it splits into 3 independent and disconnected beams having optically problematic relationships with each other with respect to the lighting technique (see figure 13.2) and this situation causes the lighting problems described below: a.
  • Beam 1 14-26° part (in the direction towards the 2 nd .cross lamella (6)) of the light emitted from the point/directional light source (2) and reflected from the bottom end of the perpendicularly blanked, cross-jointed 1 st .
  • reflection lamella (5) forms an independent beam, split from the main light distribution body, in between 64-76° (amount of light and angle interval vary depending on the position of the point/directional light source (2) in the cell) from nadir without touching the reflective surface of the 2 nd . cross lamella (see figure 13.2).
  • This beam will be considered as a loss to a great extent as it is directed to a zone away from the target lighting area, and it also causes glare due to its high beam angle (as used herein, nadir is a reference line or axis at the approximate center of the curve, that is perpendicular to the grid and vertical in relation to the room plane)
  • Beam 2 This light beam, emitted from the point/directional light source (2) towards the open surface of the cell in between the angles ⁇ 26 - 50° , confined by the two cross-jointed lamellas (5, 6) of the system, is detached both from Beam 1 (64-76°) and Beam 3 distributed in 0-17° range. Although the light distribution angle range (and the intensity of the part of it over 45°) does not cause a serious glare, it creates relatively darker, low light areas in 50-64° and 17- 27° ranges.
  • Beam 3 It is the only problem-free piece of light on its own in this cell structure.
  • This strong light beam is initially emitted from the point/directional light source (2) towards the first vertically blanked cross lamella (5) in angles 0-14° in the direction towards the second vertically blanked cross lamella (6), on 0 - 180° axis, and there reflected over towards the opposed second vertically blanked cross lamella (6) and then finally rerouted from there, towards the target lighting area, in parallel to nadir.
  • the solution to above described serious optical problem is created by shortening the width of the first perpendicularly blanked cross lamella (5) in a manner and at the extent to prevent the formation of beam 1 (see figure 14.1 )
  • the extent /size of the shortening is directly interrelated with the position of the point/directional light source (2) in the cell: the more , the point/directional light source is brought closer to the second vertically blanked cross lamella (6) , the less shortening will be needed (see: figure 13.1 ) and 2 important results will arise from this formation:
  • the function / benefit obtained by shortening the width of the first perpendicularly blanked cross lamella (5) can also be achieved by shortening the width of the first perpendicularly blanked lamella (5) less than required (to achieve the function mentioned above properly), and compensating this deficiency by extending the width of the opposed second perpendicularly blanked cross lamella (6) (see figure
  • an asymmetric light distribution could be obtained in various distribution forms and angles by converging the point/directional light source (2) towards one of the perpendicular cell walls and: a. extending the width of the wall lamella (5) towards which the point/directional light source (2) is converged (see figure 18.1 )

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

Abstract

La présente invention se rapporte à un système d'éclairage modulaire à haut rendement énergétique basé sur la réflexion multiple et le blocage de la visée, développé en particulier pour des DEL émettant une lumière ponctuelle/directionnelle et d'autres sources de lumière ayant les mêmes caractéristiques, générant des propriétés de lumière appropriées (par exemple concernant l'éblouissement, le rendu de couleur, l'homogénéité) et permettant d'obtenir une régulation de la répartition lumineuse conforme aux normes requises dans tous les domaines d'éclairage industriel applicables (éclairage intérieur/bureau-école-hôpital-supermarché, etc., éclairage de routes et de tunnels, éclairage de parcs et de jardins, éclairage d'architecture, etc.) dans lesquels des DEL/sources de lumière ponctuelle/directionnelle sont utilisées. (Figure 1)
PCT/TR2019/050023 2018-03-09 2019-01-10 Système d'éclairage basé sur le blocage de la visée et la réflexion multiple pour sources de lumière ponctuelle et directionnelle WO2019203760A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TR2020/04240U TR202004240U5 (tr) 2018-03-09 2019-01-10 Noktasal ve tek doğrultuda yayılım gösteren ışık kaynakları için görüntü bloklama ve çoklu yansımaya dayalı aydınlatma sistemi

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18161042.9A EP3537037A1 (fr) 2018-03-09 2018-03-09 Système d'éclairage basé sur le blocage de la vision et réflexion multiple pour point et sources de lumière directionnelle
EP18161042.9 2018-03-09

Publications (2)

Publication Number Publication Date
WO2019203760A2 true WO2019203760A2 (fr) 2019-10-24
WO2019203760A3 WO2019203760A3 (fr) 2019-12-12

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EP (1) EP3537037A1 (fr)
TR (1) TR202004240U5 (fr)
WO (1) WO2019203760A2 (fr)

Cited By (1)

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CN111741557A (zh) * 2020-05-12 2020-10-02 上海光瑞灯具制造有限公司 一种灯具电路控制***

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Publication number Priority date Publication date Assignee Title
IT202200002255A1 (it) * 2022-02-08 2023-08-08 Palazzoli Spa Apparecchio di illuminazione

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US5008791A (en) 1990-07-19 1991-04-16 Caferro Ronald N Low direct glare and wall wash parabolic lighting grid
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JPWO2008023797A1 (ja) * 2006-08-25 2010-01-14 古河電気工業株式会社 照明装置
WO2008122907A2 (fr) * 2007-04-04 2008-10-16 Philips Intellectual Property & Standards Gmbh Composant électroluminescent
US8608362B2 (en) * 2008-06-13 2013-12-17 3M Innovative Properties Company Collimating light engine
DE102011080313A1 (de) * 2011-08-03 2013-02-07 Osram Ag Rasterleuchte mit mehreren halbleiterstrahlern
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CN111741557A (zh) * 2020-05-12 2020-10-02 上海光瑞灯具制造有限公司 一种灯具电路控制***

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WO2019203760A3 (fr) 2019-12-12
EP3537037A1 (fr) 2019-09-11
TR202004240U5 (tr) 2021-01-21

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