EP3026327A1 - Strassenbeleuchtungsanordnung - Google Patents
Strassenbeleuchtungsanordnung Download PDFInfo
- Publication number
- EP3026327A1 EP3026327A1 EP15191799.4A EP15191799A EP3026327A1 EP 3026327 A1 EP3026327 A1 EP 3026327A1 EP 15191799 A EP15191799 A EP 15191799A EP 3026327 A1 EP3026327 A1 EP 3026327A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reflecting surface
- led light
- light source
- cooling element
- angle
- 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.)
- Withdrawn
Links
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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
- F21S8/08—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
-
- 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
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
-
- 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
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- 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
- F21Y2107/00—Light sources with three-dimensionally disposed 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 relates to the field of lighting technology. More specifically, it relates to a street lighting arrangement with LED light source attached to a lamppost or other structure (e.g. exterior wall of a building or civil engineering works).
- a lamppost or other structure e.g. exterior wall of a building or civil engineering works.
- the reflector of the light source has relatively complicated shape, i.e. it has at least one concave and complicated reflecting surface with variable convexity. Manufacturing of such convex reflecting surface is relatively complicated and expensive.
- a reflector with relatively complicated shape i.e. the reflector has at least one complicated concave reflecting surface with variable convexity. Manufacturing of such convex reflecting surface with precision is relatively complicated and expensive.
- That street lighting comprises a in the housing with a planar window, a LED light source, a reflector of a LED light source, a cooling element, and where each LED light source and each reflecting surface of the reflector is directed towards the plane of the window at an angle.
- the reflector elements of the known solutions from the aforesaid documents mainly comprise planar surfaces but the structure of the described reflector elements is relatively complicated and their manufacturing is troublesome.
- the aim of the invention is to provide a street lighting arrangement that is easy to manufacture relatively inexpensively and having structure of the reflector as simple as possible.
- the aim is to attain a structure of the reflector, which can be used for forming a reflector module, which can be used to configure different lighting fixtures.
- the aim is also to attain a reflector, which will distribute the light relatively evenly to the designed area.
- Present invention provides a reflector for a LED light source, which consists of a limited number of simple planar elements for each LED light source.
- Such reflector is suitable for mass production since the dies and/or moulds necessary for its manufacturing are many times simpler and cheaper compared to the dies and moulds needed for manufacturing of reflectors comprising the concave reflecting surfaces with variable convexity. Also the reflector arrangement according to the invention allows simple formation of reflector modules with more than one LED light source.
- the effect of the invention is achieved by combining the COB type LED light source with a reflector comprising a limited number of simple planar elements.
- a street lighting arrangement which comprises in a casing with a planar window at least one LED light source, at least one reflector of the LED light source, at least one cooling element, and where each LED light source and each reflecting surface is at an angle in relation to the plane of the window.
- the preferable embodiment comprises a planar window.
- each LED light source is attached by its back side to the surface (S0) of the cooling element, where the angle ( ⁇ 1 ) between surface (S0) of the cooling element and the window plane (W) is 50-60 degrees.
- Each LED light source is surrounded by three mainly planar reflecting surfaces (S1, S2, S3) originating close to the surface (S0) of the cooling element adjacent to the LED light source.
- the angle ( ⁇ 1 ) between the surface of the cooling element with the LED light source attached to it and the window plane is 55 ⁇ 1 degrees.
- the window plane is parallel or inclined maximum of 15 degrees in relation to the street (road, pavement, light traffic road, pedestrian crossing, etc. ) to be illuminated.
- the main reflecting surface (S1) of the LED light source has mainly trapezoidal shape, the shorter base of which faces the surface of the cooling element with LED light source and angle ( ⁇ 2 ) between one leg of the main reflecting surface and imaginary perpendicular line on the reflecting surface (S1) starting from the shorter base of the trapezium is 2 to 10 degrees.
- An angle ( ⁇ 3 ) between second leg of the trapezoidal main reflecting surface (S1) and an imaginary perpendicular line on the reflecting surface (S1) starting from the shorter base of the trapezium is 15 to 25 degrees.
- An angle ( ⁇ 4 ) between said main reflecting surface (S1) and a surface (S0) of the cooling element with LED light source is 100 to 120 degrees.
- an angle ( ⁇ 2 ) between one leg of the trapezoidal main reflecting surface (S1) of the LED light source and imaginary perpendicular line starting from the shorter base of the trapezium on the reflecting surface (S1) is 5 ⁇ 1 degrees
- an angle ( ⁇ 3 ) between the second leg and imaginary perpendicular line starting from the shorter base of the trapezium on reflecting surface (S1) is 22 ⁇ 1 degrees.
- the corresponding legs of the trapezoidal main reflecting surface (S1) are connected to the corresponding edges of the two lateral mainly triangular reflecting surfaces (S2, S3), i.e. accordingly first and second lateral triangular reflecting surface, which are correspondingly at first angle and at second angle to the main reflecting surface (S1) and the corresponding shorter sides of said lateral triangular reflecting surfaces are facing the surface of the cooling element.
- An angle ( ⁇ 5 ) between one of the lateral triangular reflecting surfaces (S2) and the trapezoidal main reflecting surface (S1) is 90 to 105 degrees and an angle ( ⁇ 6 ) between the second lateral triangular reflecting surface (S3) and the trapezoidal main reflecting surface (S1) is 95 to 115 degrees.
- the angle ( ⁇ 5 ) between the first lateral triangular reflecting surface (S2) of the LED light source and the trapezoidal main reflecting surface (S1) is at least 90 degrees and the angle ( ⁇ 6 ) between the second lateral triangular reflecting surface (S3) and the trapezoidal main reflecting surface (S1) is 110 ⁇ 10 degrees.
- edge (h S2 ) i.e. shorter side
- edge (h S3 ) i.e. the shorter side of the second lateral triangular reflecting surface (S3) facing the cooling element.
- the ratio of the edges (i.e. sides) (h S3 /h S2 ) of the first lateral triangular reflecting surface (S2) and the second lateral triangular reflecting surface (S3) facing the LED light source is in the range of 0.50 to 0.80 and even more preferably it would be in the range of 0.65 to 0.70 and most preferably the ratio is approximately 19/28.
- the edge of the second lateral triangular reflecting surface (S3) is connected to the edge of the third mainly planar triangular reflecting surface (S4) having its shortest edge facing the surface of the cooling element.
- These four reflecting surfaces i.e. the trapezoidal main reflecting surface, the first lateral triangular reflecting surface, the second lateral triangular reflecting surface and the third triangular reflecting surface form a reflector of one LED light source.
- the reflecting surfaces of two adjacent LED light sources on the surface of the cooling element are connected into a single reflector module by a second lateral triangular reflecting surface (S3) of one LED light source, which is connected via second edge of the fourth mainly triangular reflecting surface (S4) to the first lateral triangular reflecting surface (S2) of the adjacent LED light source.
- S3 second lateral triangular reflecting surface
- S4 fourth mainly triangular reflecting surface
- the cooling element is preferably elongated metal profile with generally trapezoidal or triangular cross-section.
- the street lighting according to the invention has the COB type LED light sources (COB LED - Chip-on-Board LED - composite LED array having multiple LED chips mounted on a common substrate).
- COB type LED light sources COB LED - Chip-on-Board LED - composite LED array having multiple LED chips mounted on a common substrate.
- the street lighting arrange-ment comprises at least one reflector module with two LED light sources.
- the street lighting arrangement comprises two reflector modules mirrored on either side of the cooling element with trapezoidal or triangular cross-section.
- the street lighting arrangement comprises four reflector modules mirrored in pairs on either side of the cooling element with mainly trapezoidal or triangular cross-section.
- FIGs. 1, 2 and 3 depict the street lighting arrangement according to the invention attached to the lamppost. Obviously the street lighting arrangement according to the invention can also be attached to the exterior wall of a building.
- the window plane W of the casing 2 of the street lighting arrangement 1 is parallel with the ground.
- the end of the casing 2 of the street lighting arrangement 1 facing away from the lamppost is tilted upwards.
- FIG. 4 depicts schematically a sectional detailed view of the casing 2 of the street lighting arrangement 1 taken along lines A - A of FIG. 1 at the LED light sources 3.
- FIG. 4 shows the symmetrical cooling element 4 with trapezoidal cross-section with the LED light source 3 on each lateral surface S0.
- the section shows the reflector module 6 on either side of the cooling element 4.
- FIG. 4 also shows the lateral triangular reflecting surface S2 and the trapezoidal main reflecting surface S1 in the section.
- the LED light sources 3 are at an angle to the window plane W. Since the reflector modules on either side of the cooling element 4 have mirror symmetrical shape in relation to the longitudinal direction of the cooling element, below only the reflector module on the one side of the cooling element is described.
- FIG. 5 depicts detail sectional view of one reflector module 6 attached to the cooling element 4.
- the glass of the casing window can also be seen partially with only the window plane W indicated.
- the LED light source 3 with its back side is attached to the side surface S0 of the cooling element 4. Since the COB type LED light sources are used in this invention, the side surface S0 of the cooling element 4 is parallel with the plane of the radiating side of the LED light source and all the angles indicated in relation to the side surface S0 of the cooling element 4 are the same also to plane of the radiating side of the LED light source.
- the side surface S0 of the cooling element 4 is at an angle ⁇ 1 to the window plane W.
- the angle ⁇ 1 is 55 degrees.
- the LED light source 3 is adjacent to three mainly planar reflecting surfaces beginning closely from the surface S0 of the cooling element 4 beside the LED light source 3 where the main reflecting surface S1 of the LED light source 3 is trapezoidal.
- the LED light source 3 is surrounded by three mainly planar reflecting surfaces originating closely from the surface S0 of the cooling element 4 adjacent to the LED light source 3, where the main reflecting surface S1 of the LED light source 3 is trapezoidal.
- the trapezoidal main reflecting surface S1 is at an angle ⁇ 4 to the surface S0 of the cooling element 4 which in the preferred depicted embodiment is 110 degrees.
- each LED light source 3 is surrounded by three mainly planar reflecting surfaces S1, S2, S3 originating closely from the surface S0 of the cooling element 4 adjacent to the LED light source 3.
- the main reflecting surface S1 of the LED light source has mainly trapezoidal shape, the shorter base of which faces the surface S0 of the cooling element 4 and angle ⁇ 2 between one leg of the main reflecting surface and imaginary perpendicular line on the reflecting surface S1 starting from the shorter base of the trapezium is 5 degrees.
- the angle ⁇ 3 between a second leg of the trapezoidal reflecting surface S1 and the imaginary perpendicular line on the reflecting surface S1 starting from the shorter base of the trapezium is 22 degrees; see FIGs. 6 and 7 .
- the corresponding legs of the trapezoidal main reflecting surface S1 are connected to the corresponding edges of the two lateral mainly triangular reflecting surfaces S2 and S3, which are correspondingly at first angle ⁇ 5 and at second angle ⁇ 6 to the main reflecting surface S1.
- the shorter sides of the lateral triangular reflecting surfaces S2 and S3 are facing the surface S0 of the cooling element 4.
- the angle ⁇ 5 between the first lateral triangular reflecting surface S2 and the trapezoidal main reflecting surface S1 is at least 90 degrees.
- the angle ⁇ 6 between the second lateral triangular reflecting surface S3 and the trapezoidal main reflecting surface S1 is at least 110 degrees.
- edge h S2 of the first lateral triangular reflecting surface S2 facing the cooling element 4 is longer than the edge h S3 of the other lateral triangular reflecting surface S3 facing the cooling element 4.
- the ratio of these edges h S3 /h S2 is in the range of 0.50 to 0.80 and preferably in the range of 0.65 to 0.70. In the situation depicted in the drawing, this ratio is approximately 19/28.
- FIGs. 8 and 9 show the location of the reflector module 6 in relation to the LED light source 3 installed on surface S0 of the cooling element 4.
- the edge of the second lateral triangular reflecting surface S3 is connected to the fourth mainly triangular and mainly planar reflecting surface S4, the shortest edge of which is facing the surface S0 of the cooling element 4.
- the reflecting surfaces S1, S2 and S3 adjacent to one LED light source 3 and the reflecting surface S4 adjacent to the second reflecting surface S3 form a reflector of a single LED light source.
- the reflector module 6 with two LED light sources 3 is formed on the surface S0 of the cooling element 4 by connecting corresponding edges of the adjacent reflecting surfaces S2 and S4 of the two adjacent LED light sources 3; see FIG. 7 .
- a tilt of the reflection surface S4 in relation to the reflecting surfaces S3 and S2 is determined by the ratio of the length h S3 /h S2 of the shorter edges of the aforesaid second and third lateral reflecting surfaces S2 and S3.
- the other reflecting surface S4 which is closer the lateral outer edge of the module and is connected with one of the longer edges with only the reflecting surface S2, has the same tilt as the other reflecting surface S4 of the module which connects two adjacent reflectors.
- the reflector module is made of sheet metal.
- FIG. 10 depicts typical embodiment of the street lighting arrangement comprising two reflector modules mounted onto the cooling element and mirrored in shape on either side of the cooling element with trapezoidal or triangular cross-section. For the sake of clarity, only the reflector modules, the LED light sources and the cooling element are depicted.
- the area of the light diode crystals is of order of 16 mm.
- the height of the cooling element with trapezoidal cross-section is within the range of 40 mm.
- the length of one reflector module is within the range of 110 mm and the width approximately 130 mm. These dimensions are indicated as an example only. The dimensions of the reflector module primarily depend on the dimensions and other parameters of the used COB type LED light source.
- FIG. 11 depicts the lighting intensity diagram (units cd/m2) of the lighting arrangement according to invention and corresponding to FIG. 10 .
- the lighting arrangement was located at the height of 8 meters from the illuminated surface and the window plane was parallel with the illuminated surface.
- the lighting arrangement was on one side of the illuminated surface (e.g. road, pavement, etc .) and crosswise with it. As can be seen from the diagram, the beam pattern on the illuminated surface is relatively even.
- FIG. 12 shows a 3D image of the lighting intensity according to FIG. 11 , where the position of the lighting arrangement 1 according to the invention is shown schematically in relation to the illuminated surface.
- the grey shades of the light spot in FIG. 12 do not correspond one-to-one to the lighting intensity (brightness) but these grey shades have emerged at the conversion into black and white image of the originally colour diagram, where the intensity is depicted towards the decrease of the intensity from red to violet.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EEU201400077U EE01289U1 (et) | 2014-11-28 | 2014-11-28 | Tänavavalgusti konstruktsioon |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3026327A1 true EP3026327A1 (de) | 2016-06-01 |
Family
ID=52808306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15191799.4A Withdrawn EP3026327A1 (de) | 2014-11-28 | 2015-10-28 | Strassenbeleuchtungsanordnung |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3026327A1 (de) |
EE (1) | EE01289U1 (de) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009052094A1 (en) | 2007-10-17 | 2009-04-23 | Lsi Industries, Inc. | Roadway luminaire and methods of use |
EP2177818A1 (de) * | 2008-10-17 | 2010-04-21 | BöSha Technische Produkte GmbH & Co. KG | Leuchteinheit einer Straßenlaterne |
US20100202140A1 (en) | 2007-07-26 | 2010-08-12 | Innolumis Public Lighting B.V. | Street lighting arrangement |
US20100302762A1 (en) * | 2009-05-27 | 2010-12-02 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | Anti-glare led lamp and tunnel illumination system having the same |
US20110194281A1 (en) * | 2008-09-15 | 2011-08-11 | Led Roadway Lighting Ltd. | Light emitting diode roadway lighting optics |
US20110249438A1 (en) * | 2008-12-24 | 2011-10-13 | Wan Soo Han | Light source module and lighting device including the same |
DE102012102015A1 (de) * | 2012-03-09 | 2013-09-12 | Selux Aktiengesellschaft | Außenleuchte |
-
2014
- 2014-11-28 EE EEU201400077U patent/EE01289U1/et not_active IP Right Cessation
-
2015
- 2015-10-28 EP EP15191799.4A patent/EP3026327A1/de not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100202140A1 (en) | 2007-07-26 | 2010-08-12 | Innolumis Public Lighting B.V. | Street lighting arrangement |
WO2009052094A1 (en) | 2007-10-17 | 2009-04-23 | Lsi Industries, Inc. | Roadway luminaire and methods of use |
US20110194281A1 (en) * | 2008-09-15 | 2011-08-11 | Led Roadway Lighting Ltd. | Light emitting diode roadway lighting optics |
EP2177818A1 (de) * | 2008-10-17 | 2010-04-21 | BöSha Technische Produkte GmbH & Co. KG | Leuchteinheit einer Straßenlaterne |
US20110249438A1 (en) * | 2008-12-24 | 2011-10-13 | Wan Soo Han | Light source module and lighting device including the same |
US20100302762A1 (en) * | 2009-05-27 | 2010-12-02 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | Anti-glare led lamp and tunnel illumination system having the same |
DE102012102015A1 (de) * | 2012-03-09 | 2013-09-12 | Selux Aktiengesellschaft | Außenleuchte |
Also Published As
Publication number | Publication date |
---|---|
EE01289U1 (et) | 2015-04-15 |
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