WO2011033330A1 - Module d'éclairage de rue comprenant des del - Google Patents

Module d'éclairage de rue comprenant des del Download PDF

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Publication number
WO2011033330A1
WO2011033330A1 PCT/HU2010/000100 HU2010000100W WO2011033330A1 WO 2011033330 A1 WO2011033330 A1 WO 2011033330A1 HU 2010000100 W HU2010000100 W HU 2010000100W WO 2011033330 A1 WO2011033330 A1 WO 2011033330A1
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WO
WIPO (PCT)
Prior art keywords
street lighting
leds
lighting module
diverting
light
Prior art date
Application number
PCT/HU2010/000100
Other languages
English (en)
Inventor
László DOMJÁN
Gábor SZARVAS
Attila SÁGHY
Szabolcs Kautny
András MOLNÁR
Iván HOFFMAN
Original Assignee
Eka Elektromos Készülékek És Anyagok Gyára Kft.
Optimal Optik Kft.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Eka Elektromos Készülékek És Anyagok Gyára Kft., Optimal Optik Kft. filed Critical Eka Elektromos Készülékek És Anyagok Gyára Kft.
Publication of WO2011033330A1 publication Critical patent/WO2011033330A1/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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/05—Optical design plane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/08—Lighting devices intended for fixed installation with a standard
    • F21S8/085—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light
    • F21S8/086—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light with lighting device attached sideways of the standard, e.g. for roads and highways
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/02—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
    • 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 present invention relates to a LED based street lighting module as well as to a modular street lighting luminaire arrangement made up of said street lighting modules configured for the purposes of public road vehicular traffic.
  • the street lighting luminaires are to produce a predetermined light distribution, e.g. a whobat wing" light distribution according to the polar diagram shown in Fig. 1.
  • the light flux of the light source is normalized to 1000 Im in the figure. It is typical of the energy-efficient light distribution that the applied luminaire radiates in a lower angle perpendicular to the longitudinal direction of the road than in the direction of the longitudinal axis of the road. In this way, the main part of the light flux of the luminaire falls on the illuminable street surface, and not too much light reaches the regions near the street.
  • the predetermined light distribution to be produced by the street lighting module therefore, generally has a lengthwise direction along the direction of the street (the 0° - 180° direction in the figure) and a crosswise direction perpendicular to the street (the 90° - 270° direction in the figure).
  • the light escaping into the environment is a loss, while on the other hand it unnecessarily loads the illuminated natural objects, as well as causes possible disturbance to those living in the neighborhood.
  • the light distribution of a street lighting luminaire is good when the highest light density falls into the range exceeding 60 degrees - or in certain cases 72 - 73 degrees - from the vertical in the longitudinal direction of the road.
  • the light emitted above 80° shall be limited in order to avoid dazzling, and the luminaire is prohibited to emit any light above 90° for reasons of light pollution. In modern luminaires, this is achieved by means of a flat glass cover, because in this case not even the luminous flux reflected by the cap is being directed towards the sky.
  • the conventional street lighting luminaires realizing a coincidebat wing" type of light distribution generally comprise one light source of high luminous power - with a light flux of up to thousands of lumens in some cases -, and a corresponding, in most cases specially formed (so-called 'freeform') optical system with mirrors or possibly lenses.
  • the light sources are produced with various power ranges. Therefore, the natrium lamps, mercury lamps, metal-halogen lamps and compact fluorescent lamps etc. most widely used in public street lighting are available within the power range of 18 to 400 W.
  • Modern luminaires are arranged so that the relative positions of the light source with various power and the 'freeform' optics can be varied or shifted in fix positions along one or two axes, whereby the light distribution emitted by the luminaire is characteristically altered.
  • modern luminaires are capable of radiating up to 5 - 10 different light distributions depending on the relative positioning of the light source and the optics.
  • the light flux leaving the luminaire can be effectively directed onto the illuminable, generally rectangular shape street surface. This is similar to the focusing of optical projection systems, where by moving the projection objective the image of an object is being focused, sharpened on the screen.
  • the luminaire is enabled to meet the requirements of evenness as stipulated by the public street lighting standards even in case of various pole heights, pole intervals and road widths, beside complying with the dazzling requirements.
  • the luminaire families arranged in this way are capable of achieving levels of low luminosity (0,3 cd/m 2 ) and low illumination (5 lux) prescribed for side streets with low traffic ranging to high luminosity (2 cd/m 2 ) and high illumination (50 lux) levels prescribed for suburban sections of the motorway, as well as meeting all respective evenness requirements valid for various transportation situations in an economic, and energy-efficient manner.
  • the light flux of commercially available LEDs is significantly lower than the light flux of high power lamps. Therefore, a plurality (5 to 10 pieces) of high power LEDs - or in the case of higher luminosities it can range up to 50 high power LEDs - may be required to be integrated into one luminaire to attain the light power of state-of-the-art, high-power street lighting modules. Because of cooling problems, LEDs have to be placed at appropriate distances from each other, as the heat generated in the LEDs can only be conducted by way of thermal conduction. For this purpose, fixing elements and heat sinks of appropriate width and good thermal conductivity have to be arranged.
  • LED luminaires Because of the LED arrangement and of the need to arrange thermal conduction, none of the common street lighting mirrors or optical arrangements can be applied in LED luminaires.
  • the sizes of current light sources exceed that of the LEDs', moreover they emit spatially continuous light.
  • Public street lighting mirrors presently in use convert the light distribution of an extensive continuous light source to the bat-wing light distribution used typically in public street lighting.
  • LED luminaires comprise numerous small-size light sources placed in offset positions for reasons of cooling. It is the task of the optical systems of the LED luminaires to unify and form with good efficiency the individual light distributions of the small- size, discrete light sources placed in offset positions, so as to provide the required light power together as well as the bat-wing light distribution optimal for the solution of public street lighting task.
  • a commonly used solution is to have a special 'freeform' lens fitted to each individual LED so as to form the light current of each individual LED into a bat- wing light distribution. The desired distribution is then maintained in the sum. While the light power of each LED is yet low, in order to achieve appropriate luminosity and illumination, matrices are made up of the LEDs and the special lenses including up to 10 to 20 LED+lens elements. The luminaires are then built from these matrices, which at the same time serve as the surface ensuring fixing and cooling. The luminaire in this way forms a closed, compact unit, the cooling is efficient, the 'freeform' lenses can be cheaply produced in large quantities. The lenses cover the LEDs, so there is no need for additional protection or cap.
  • US 6 250 774 B1 discloses a luminaire comprising numerous LEDs set in different directions and optics fixed thereto.
  • the light distribution suitable for attaining public street lighting tasks is altered by way of directing the LEDs and by means of the optics' collimation angle.
  • Losses have partly geometric origin, however, the main reason is the fact that a good anti-reflection layer cannot be applied onto the complicated, high-curvature surfaces, or that the application of such anti-reflection layer can be achieved only at rather high costs. Thus, there will be light losses due to Fresnel reflection when the light enters and also when leaves the lens.
  • the LEDs are cemented onto the heat sink by means of a semi-spherical mounting element. Although, during the production, this allows for the tilting of the LEDs along two axes, but the thermal conduction is worse than in the case of a fixed mounting with a relatively great diameter.
  • the light is required to pass through numerous beam-forming elements in order to configure the optimal light distribution, which considerably increases the loss as well as the light diffusion compared to a simple mirror system.
  • Fig. 1 is a diagram of an exemplary predetermined light distribution, the so- called bat wing distribution,
  • Fig. 2 is a schematic vertical section of the street lighting module according to the invention installed for street lighting
  • Fig. 3 is a section of the planar diverting mirror optics arrangement of a simplified street lighting module
  • Fig. 4 is a three-dimensional bottom view of a preferred street lighting module according to the invention.
  • Fig. 5 is another bottom view of the street lighting module according to Fig.
  • Fig. 6 is a three-dimensional top view of the street lighting module according to Fig. 4
  • Fig. 7 is a section of the street lighting module according to the invention provided with a casing
  • Figs. 8 and 9 are parts of the street lighting module according to the invention providing variable light distribution, in two three-dimensional views,
  • Figs. 10 to 12 are three-dimensional schematic views of the preferred street luminaire arrangements installed with the street lighting module according to the invention.
  • Fig. 13 is a schematic vertical section of a particularly preferred street lighting module according to the invention.
  • Figs. 14 and 15 are three-dimensional and side views of a preferred diverting mirror assembly.
  • collimators with individual mirrors mounted onto LEDs have better efficiency than prior art collimators with lenses for the purposes of the given application.
  • the commercially available collimators with mirror have an efficiency of 92% or more, as most of the 'light passing to the right direction' leaves the collimator with mirror freely, without any reflection, i.e. without any loss.
  • the forming, directing of the light beam can be achieved by including a collimator of the appropriate angle and by adjusting the axis of the LED+mirror optical element to an appropriate angle.
  • mirrorless LEDs radiate rotated around an axis parallel to the longitudinal axis of the road mainly, in a large spatial angle, but mainly in a plane perpendicular to the road.
  • the preferably applied LEDs installed with mirror collimators radiate in a significantly lower angle, mostly in the longitudinal direction of the road, oriented mainly towards an edge point of the road opposite the adjacent pole.
  • the LEDs directed towards said point are rotated around two axes. Precise orientation of the LEDs can be determined by means of computer optimization.
  • the LEDs are to be positioned so that the LEDs turned to different directions, as well as the LED+collimator elements should not cover each other's light. Therefore, the LED positions need to be optimized: the LEDs are to be offset relative to each other in the three directions of space.
  • the optical effects (shading, reflection, light absorption, etc.) of the heat sinks serving for fixing the appropriately positioned and rotated LEDs shall be considered, as well.
  • heat sinks and cooling elements of suitable width have to be used.
  • the LEDs are preferably positioned symmetrically in the optical system to a plane perpendicular to the road.
  • the LED based street lighting module 10 therefore, comprises LEDs, 14c, 14d as light sources, as well as mirrors directing the respective lights thereof.
  • the street lighting module 10 according to the present invention comprises internal space 12, LEDs 14c, 14d positioned and oriented in the internal space 12 according to a predetermined light distribution, at least one of said LEDs 14c, 14d preferably being also fitted with collimator optics 24, as well as planar diverting mirrors 16a, 16b, 16c, 16d forming a light diverting internal surface of the internal space 12.
  • the planar mirror shape is extraordinarily advantageous for reasons of simple production.
  • the side LEDs 14c, 14d installed with collimator optics 24 are arranged radiating preferably in a lower angle, in the longitudinal direction of the road, oriented roughly in the direction of the edge point of the road opposite the adjacent pole.
  • the LEDs 14c, 14d, 14m suitably positioned in space and rotated into given spatial directions, preferably installed in part with aspheric mirror optics are surrounded by a mirror system made up of planar diverting mirrors 16a-16d preferably on four or five sides, in a way shown in Figs. 2 to 5.
  • a mirror system made up of planar diverting mirrors 16a-16d preferably on four or five sides, in a way shown in Figs. 2 to 5.
  • One side of the optical system made up of planar diverting mirrors 16a-16d defines an optically open, rectangular light exit opening 11 , where the appropriately formed light beam leaves the street lighting module 10.
  • the street lighting module 10 preferably comprises two pairs of such diverting mirrors 16a, 16b, 16c, 16d that are arranged in opposite facing pairs 16a, 16b, 16c, 16d, and which diverting mirror pairs are arranged defining the internal space 12 expanding towards the light exit opening 11.
  • a fifth plane can be arranged with a diverting mirror function for fixing LEDs 14c, 14d, 14m.
  • the planar diverting mirrors 16a-16d have complex functions: the mirrors on the one hand divert the light of the LEDs 14c, 14d, 14m installed without collimator optics into the direction of the illuminable road surface (pavements 20, carriageway 22), while on the other hand they prevent large-angle beams to leave the luminaire fixed onto the pole 18 comprising the street lighting module 10. This, on the one hand, increases the efficiency of the street lighting module 10, and reduces light being scattered into the vicinity of the road. So-called light pollution is on the other hand blocked, in other words, the street lighting module 10 does not emit any light in the direction of the sky.
  • a section of the street lighting module 10 taken in a plane perpendicular to the longitudinal axis of the road in a way as shown in Fig. 2 resembles an angular housetop.
  • a front diverting mirror 16a is tilted at an angle lower than the horizontal and a back diverting mirror 16b is tilted at an angle higher than the horizontal, so that the light beam of the street lighting module 10 should appropriately illuminate the range of the road opposite the pole 18 and - if necessary - the pavement opposite the pole 18 as well.
  • angles of inclination of the front and back diverting mirrors 16a, 16b are preferably variable so as to allow that illumination and luminosity with good efficiency are produced in compliance with the required evenness in case of differing pole heights or varying road widths, as well.
  • Fig. 3 shows a section of a planar diverting mirror optical arrangement of a simplified LED based street lighting module 10 in a plane perpendicular to that of the road.
  • the direct and reflected large-angle light rays leaving the street lighting module 10 can be clearly seen in the figure.
  • the street lighting module 10 further comprises one or more cooling element(s) 26 holding one or more LED(s) 14c, 14d for conducting the heat from the internal space 12.
  • the cooling elements 26 are preferably heat sinks arranged in a way so as to minimize shading.
  • Figs. 4 and 5 show two spatial bottom views of an exemplary LED based street lighting module 10 realizing a bat wing light distribution.
  • the street lighting module 10 is a planar mirror type optical system with six sides open on one side.
  • the street lighting module 10 comprises 2x3 symmetrically positioned LEDs 14, 14c, 14d, 14m offset and rotated in the suitable direction. It can be seen in the figures, that the street lighting module 10 may comprise further LEDs 14 adjusted according to the given application in addition to the side LEDs 14c, 14d and middle LED 14m, as well.
  • the collimator optics 24 have not been shown in the figure.
  • the LEDs 14, 14c, 14d, 14m are fixed onto cooling elements 26 and heat sinks of appropriate width and good thermal conductivity.
  • the cooling elements 26 are thermally connected to a cooling rib 27, illustrated in more detail in Fig. 6, positioned on top of the street lighting module 10, and preferably are fixed thereto.
  • the thermal loss of the LEDs 14, 14c, 14d, 14m is transferred into the environment by means of the cooling rib 27.
  • the street lighting module 10 as per the preferred embodiment shown in Figs. 4-6 comprises diverting mirrors 16a, 16b, 16c, 16d defining a rectangular light exit opening 11 , in one of said diverting mirror pairs the diverting mirrors 16c, 16d are arranged in parallel, while in the other pair the diverting mirrors 16a, 16b are arranged expanding towards the light exit, opening 11.
  • This allows a simple structure, furthermore enables a modular street lighting arrangement to be produced when installed adjacently.
  • Fig. 7 shows another street lighting module 10 - arranged in a casing - 28 in a section perpendicular to a plane of the road taken in a plane parallel to the longitudinal axis of the road.
  • the LEDs 14 are in part installed with collimator optics 24 with aspheric mirrors. ln a way as seen in Figs.
  • the front and back diverting mirrors 16a, 16b are preferably rotatable around the axis located along the upper side thereof, therefore the length - width ratio of the illuminated territory is variable by means of adjustment of the angles of the two rotatable diverting mirrors 16a, 16b: in the case of a lower pole 18 or a wider road the angle closed by the two diverting mirrors 16a, 16b is larger, whilst in the case of higher pole 18 or narrower road, the angle closed by the two diverting mirrors 16a, 16b is smaller.
  • the diverting mirrors 16a, 16b arranged expanding towards the light exit opening 11 are, therefore, fixed in the street lighting module 10 by means of a joint 30 enabling adjustment of the angle closed by the diverting mirrors 16a, 16b.
  • the side mirrors 16c, 16d are not shown on Figs. 8 and 9. It can be seen in the figures that the LEDs 14m are installed by way of printed circuit boards 32.
  • the street lighting module 10 is preferably arranged symmetrically with respect to a vertical middle plane, comprising LEDs 14, 14c, 14d, 14m vertically and/or horizontally offset to each other within the internal space 12 positioned in an arrangement minimizing shading.
  • the LEDs 14, 14c, 14d, 14m offset to each other are preferably rotated relative to each other as well along a horizontal and/or vertical axis, in order to provide the predetermined light distribution.
  • the open, planar light exit opening 11 or surface where light leaves the optical unit is preferably covered by a covering plate 29 of a transparent material, such as a plane tempered glass plate or shatterproof plastic plate, so as to realize a cover exempt of light pollution and providing water and dust protection in accordance with IP66 requirements, what is a requirement in the case of modern luminaires.
  • the covering plate 29 is preferably such a closing glass plate, which is provided with an antireflection layer on both sides for the sake of reducing reflection. In this way, the reflection of light incident on the surface of the glass plate is significantly decreased, by up to 10%, thereby increasing the light emitted into the critical direction, in other words, the bat wing light distribution will this way become more articulated, and the efficiency of the module increases.
  • Figs. 10 to 12 show the schemes of the preferred street lighting luminaire arrangements installed with adjacently placed modules according to the invention.
  • Fig. 10 shows a top view of an arrangement provided in a line parallel to the road. In this case the ..housetops" are lined up and the street lighting modules 10 connect each other via planar plates. This results a more compact arrangement, but reduces the efficiency of cooling in a small degree.
  • Fig. 11 shows a side view of an arrangement realized in a line perpendicular to the road. The ..housetops" are positioned behind each other, the modules meet along respective lines.
  • Fig. 12 shows a top view of a block type arrangement, wherein preferably the horizontal direction corresponds to the direction parallel to the road. The light exit openings 11 of the street lighting modules 10 in the shown arrangements preferably fall in one plane, which plane is parallel to the illuminable road surface.
  • the invention therefore, relates to such an LED based optical module and luminaire family or arrangement made up of one or more street lighting modules, wherein the arrangement and orientation of the LEDs 14, 14c, 14d, 14m as well as, in certain cases, the collimator optics fixed onto the individual LEDs 14c, 14d and the optical system made up of the applied planar diverting mirrors 16a-16d substitute the light source of the street luminaires as well as the optical arrangement realizing the bat wing light distribution.
  • the disclosed LED based module and luminaire family is competitive with the state-of-the-art street lighting modules in terms of variable light power and light distribution body.
  • the power of the module can be varied by including less or more high-power LEDs into given LED positions of the given geometrical arrangement, or in certain positions not including any LEDs at all. Furthermore, the LED power is also selectable for the given application.
  • the bat wing light distribution is achieved by appropriate spatial positioning and orientation of the LEDs and by the help of mirrors.
  • a finite number of LEDs can be placed in one module, only.
  • the optimal number of LEDs ranges between four and twenty-five.
  • the four to twenty-five LEDs in part, approx. two- four pieces, are provided collimator optics 24 with aspheric mirror, collecting the light radiated by the LED in an angle of approx. 80° - 90° to an angle of 20° - 30°.
  • the collimated light largely contributes to forming the bat-wing light distribution.
  • the axes of collimator optics point in the direction of the highest luminous power, thereby greatly increasing the light radiated into the critical direction. All remaining LEDs in the module radiate freely, without collimator optics.
  • Fig. 13 shows a simplified section of an especially preferred embodiment of the street lighting module 10 according to the invention in a vertical plane parallel to the longitudinal axis of the road.
  • the predetermined light distribution applicable for illuminating the road has a longitudinal direction lengthwise the road as well as a cross direction crosswise the road.
  • the street lighting module 10 comprises two side diverting mirrors 16c, 16d, each arranged lengthwise on the two sides of the street lighting module 10, being essentially perpendicular to the longitudinal direction. At least one side LED 14c, 14d is arranged at each said side diverting mirror 16c, 16d - preferably at the upper part of the diverting mirror.
  • the directions of the side LEDs 14c, 14d are tilted towards each other in such a way that the direction of the side LED 14c, 14d closes an angle of between 50° - 80° with the plane of the adjacent side diverting mirror 16c, 16d.
  • the side LEDs 14c, 14d being oriented closing a large angle with the vertical, radiating preferably in the direction of the longitudinal axis of the road and being offset to the two opposite sides of the street lighting module 10 radiate relatively far from each other, but turned towards each other.
  • This solution results in a significant decrease in size.
  • the direct light rays (solid line) and the reflected large angle light rays (dashed line) leaving the street lighting module can be clearly seen in the figure. It is the task of the side mirrors to limit the light rays departing with too large angle. This reduces the luminous power, which is the cause of dazzling, and makes illumination more even and smooth.
  • the term 'essentially perpendicular' shall refer to an angle closing 90° +/- 2° with the longitudinal direction; according to our experiments said diverting mirror orientation, as well as an angle of 50° - 80° closed by the LEDs with the vertical line provide the evenness advantages as per the above.
  • the further two diverting mirrors 16a, 16b are arranged essentially parallel to the longitudinal direction and between the side diverting mirrors 16c, 16d, and define an internal space 12 expanding towards the rectangular light exit opening 11.
  • the directions of the middle LEDs 14m are preferably adjusted to an angle depending on road width and pole height in a plane perpendicular to the longitudinal direction, while the side LEDs 14c, 14d are preferably rotated around two axes (facing each other on the one hand, and also closing an angle of e.g. 5 - 20° with the longitudinal direction on the other hand).
  • the figure further demonstrates that due to size limitations only a finite number of LEDs 14, 14c, 14d, 14m can be included in the optical space being bordered by the planar mirrors.
  • the LEDs 14, 14c, 14d, 14m fixed onto the heat sinks have to be placed at appropriate intervals from each other.
  • the ratio of the H and V values indicated in Fig. 13 defines the angle of direct light rays leaving the internal space 12 in large angle.
  • the quantity of light passing over 80° relative to the vertical axis of the module is to be limited, in other words the H / V ⁇ tg(80°) relationship is to be met.
  • H size is to be limited as well, which consequently limits the number of LEDs 14, 14c, 14d, 14m that can be built in the module.
  • H size is essentially determined by the number of LEDs 14, 14a, 14c, 14d, 14m to be fixed onto the middle heat sinks, and by the distance between them, in order to avoid shading of the heat sinks of the side LEDs 14c, 14d, H size should not be selected larger than the size thermally required.
  • the heat sinks are directed outwardly from the internal space 12, thereby simplifying the configuration of the way of heat conduction.
  • the side LEDs 14c, 14d are lighting inwardly into the internal space 12 and the heat sinks are directed outwardly from the internal space 12, thereby shading is minimized, a smaller and more compact module can be built.
  • Heat sinks are preferably blocks with 5 to 15 cm 2 circle or square cross section, made of a material of good heat conductivity, preferably aluminum, and being 1 to 5 cm in height.
  • the base plate of the heat sinks are fixed to the housing of the module or to the cooling rib, the loss heat of the LEDs 14, 14c, 14d, 14m is here transmitted.
  • the LEDs 14, 14c, 14d, 14m are fixed onto the covering plate of the heat sink.
  • the base and the covering plates of the heat sinks are not parallel to each other, and one or both of the plates is not necessarily perpendicular to the axis of the heat sink.
  • the surfaces (base and covering plates) tilted along one or two axes enable on the one hand the base plate to join appropriately the outer surfaces (lamp housing or cooling rib), on the other hand ensure the LEDs 14, 14c, 14d, 14m to be appropriately positioned and to radiate in the appropriate direction.
  • the position of the heat sinks and the angle of the covering plate are determined by an optimization process carried out in the course of the optical design of the module.
  • the positions and the directing angle of the LEDs 14, 14c, 14d, 14m are defined by the size and arrangement of the heat sink as well as the angle of the covering plates, therefore, the geometrical parameters of the heat sinks bear essential influence on the light distribution body of the module.
  • the geometrical parameters of the heat sinks bear essential influence on the light distribution body of the module.
  • 1 to 20 pieces of LEDs may connect to the cover plate of each heat sink.
  • the heat sinks are positioned in part in the internal space 12, transferring the heat through one or more diverting mirror(s) 16a, 16b, 16c, 16d bordering the internal space 12, through openings formed on the mirrors.
  • the LEDs 14, 14c, 14d, 14m are advisably positioned close to the bordering plates of the internal space, the partly radiating facing each other side LEDs 14c, 14d are offset from each other at appropriate distances, so that neither the LEDs 14c, 14d nor the heat sinks would shade. Shading can be minimized by having the optical axis of the LEDs 14, 14c, 14d, 14m, which is perpendicular to the covering plate of the heat sink, directed inwardly into the internal space 12.
  • the LEDs 14c, 14d partly radiating facing to each other are positioned relatively distant from each other on opposite sides of the internal space 12, which means that the radiation space is covered only in a very small cone angle.
  • the heat sinks belonging to the side LEDs 14c, 14d tilt outwardly, and do not cover the light of the upper LED row.
  • the heat sinks belonging to the side LEDs 14c, 14d tilted inwardly into the internal space 12; as in this case the distance of the middle LEDs 14m should be increased significantly from the side LEDs 14c, 14d so that the heat sinks shaded the light of the middle LEDs 14m to a small extent only.
  • the diverting mirrors 16a, 16b with adjustable angle are not necessarily fixed by means of joints, but any other type, by way of example self-holding, mirror system can be arranged just as well.
  • small- size openings e.g. 1 to 2 x 4 to 8 mm in diameter, arranged exactly facing each other are positioned appropriately in the side diverting mirrors 16c, 16d. Plates 36 of 0,1 to 0,2 mm less in cross-section than the opening 34 are fixed therein, having diverting mirrors 16a, 16b installed thereon. In this case, therefore, two openings 34 per each side define the position of the movable diverting mirrors 16a, 16b.
  • the diverting mirrors 16a, 16b can be fixed by selecting the appropriate fixing opening 34 pairs preferably in 2 to 4 positions within the self-holding optical system.
  • the street lighting module may comprise additional elements, mirrors, and the predetermined light distribution may also be any required or specified light distribution other than the bat wing distribution.

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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 concerne un module (10) d'éclairage de rue à DEL, comprenant des DEL (14, 14b, 14c, 14m) servant de sources de lumière ainsi que des miroirs pour orienter la lumière desdites DEL. Le module (10) d'éclairage de rue selon l'invention comprend un espace interne (12), des DEL (14, 14c, 14d, 14m) placées dans l'espace interne (12) positionnées et orientées conformément à une distribution prédéfinie de la lumière ainsi que des miroirs plans (16a, 16b, 16c, 16d) de déviation formant une surface interne de déviation de l'espace interne (12). La présente invention concerne également un dispositif de luminaire pour l'éclairage de rue modulaire formé au moyen du module (10) d'éclairage de rue.
PCT/HU2010/000100 2009-09-17 2010-09-17 Module d'éclairage de rue comprenant des del WO2011033330A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU0900583A HUP0900583A2 (en) 2009-09-17 2009-09-17 Lamp modul with led and luminaire for street lighting
HUP0900583 2009-09-17

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WO2011033330A1 true WO2011033330A1 (fr) 2011-03-24

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2999920B1 (fr) 2012-05-15 2018-10-03 Musco Corporation Appareil, procédé et système pour étapes de visée et d'interruption indépendantes dans l'éclairage d'une zone cible

Citations (5)

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Publication number Priority date Publication date Assignee Title
US6250774B1 (en) 1997-01-23 2001-06-26 U.S. Philips Corp. Luminaire
WO2006043195A1 (fr) * 2004-10-18 2006-04-27 Koninklijke Philips Electronics N.V. Ensemble source lumineuse del haute efficacite
WO2008141493A1 (fr) * 2007-05-23 2008-11-27 Ningbo Liaoyuan Industry Stock Co., Ltd. Adaptateur de lampe pour lampadaire de rue à del
WO2008145065A1 (fr) * 2007-05-28 2008-12-04 Thermoshuttle Co., Ltd. Appareil d'éclairage
EP2019250A1 (fr) * 2007-07-26 2009-01-28 Lemnis Lighting IP GmbH Agencement d'éclairage des voies publiques

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6250774B1 (en) 1997-01-23 2001-06-26 U.S. Philips Corp. Luminaire
WO2006043195A1 (fr) * 2004-10-18 2006-04-27 Koninklijke Philips Electronics N.V. Ensemble source lumineuse del haute efficacite
WO2008141493A1 (fr) * 2007-05-23 2008-11-27 Ningbo Liaoyuan Industry Stock Co., Ltd. Adaptateur de lampe pour lampadaire de rue à del
WO2008145065A1 (fr) * 2007-05-28 2008-12-04 Thermoshuttle Co., Ltd. Appareil d'éclairage
EP2019250A1 (fr) * 2007-07-26 2009-01-28 Lemnis Lighting IP GmbH Agencement d'éclairage des voies publiques

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2999920B1 (fr) 2012-05-15 2018-10-03 Musco Corporation Appareil, procédé et système pour étapes de visée et d'interruption indépendantes dans l'éclairage d'une zone cible

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HUP0900583A2 (en) 2011-07-28
HU0900583D0 (en) 2009-11-30

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