WO2012099553A2

WO2012099553A2 - Three dimensional lighting system

Info

Publication number: WO2012099553A2
Application number: PCT/TR2011/000266
Authority: WO
Inventors: Arslan ERCAN
Original assignee: Ercan Arslan
Priority date: 2010-11-11
Filing date: 2011-11-11
Publication date: 2012-07-26
Also published as: TR201009385A1; WO2012099553A3

Abstract

The invention, concerning a three dimensional fixture and a three dimensional lighting system and a light source produced accordingly, providing full coverage, homogeneous light distribution and quadrilateral lighting is essentially characterized by comprising, a light source (1 a, 1b), a light beam emanated from the light source (2), a planar normal of the unit light position (3) at which the emanated light beam is directed towards, a center of illumination area (4) illuminated by the light source (1 a, 1 b), a unit illumination area (5), a basic illumination area (6) that consists that is formed by joining unit illumination areas (5), a large area (7) that consists that is formed by joining basic illumination areas (6), a plane of unit light position (8) on the light source (1a, 1b), cooling fins (9) on the convex light source (1a), a plane of convex light source position (10) on the convex light source (1a) and a front surface of the concave light source (11) on the concave light source (1b) and a virtual focal point (12).

Description

DESCRIPTION

THREE DIMENSIONAL LIGHTING SYSTEM This invention concerns a three dimensional fixture and a three dimensional lighting system and a light source produced accordingly, providing full coverage, homogeneous light distribution and quadrilateral lighting.

With an ideal lighting system, light must be produced with the highest possible efficiency (lumen/watt %- Lumen: is, in physics, the unit of light flux that is the amount of light emitted from a source in unit time. Watt: is the unit of electrical power with the value 1 joule/sec.) and bu used with the highest efficiency by being distributed in a fully covering and homogeneous way by being directed only inside the borders of the area to be illuminated (lux/watt %- Lux: is the light flux (lumen/m ) of incident light on a unit area of a surface) and with a quality best suiting the standards of illumination.

The present fixtures (even the state of the art fixtures with power LEDs), as a light source, are in a single plane and two dimensional in respect of their width and lengths and all the LEDs are positioned on a single plane. The light from the LEDs on a single plane are emitted in only a single direction along the normal of the plane the LEDs are positioned on. The present fixtures of a single plane angle and without light control, are not capable of providing quadrilateral lighting that covers the edges and corners with light beams distributed homogeneously over every point of the area and since, even though every site is geometrically different, these fixtures are forcibly used in every site, causing high light consumption and thus energy consumption.

There are also led lighting fixtures of a convex shape; but these fixtures as light sources are not light sources that are in accordance with the area to be illuminated and do not provide full coverage as well. These fixtures also, emit circular/spherical light. They rely on the assumption that if convex only light distribution is provided, than more area will be lit, and they are not sources to-cover-the-whole of the desired area. These products also are not in relation to the shape of the area to be illuminated. They do not distribute homogeneous light to every region of the area and the light intensity in unit area increases when getting closer to the center. This doesn't meet the requirements for optimal usage quality of the light at all points and doesn't provide a sufficient difference over the traditional lighting fixtures.

For the directed total light form light sources of a single plane, no matter with what radiant angle they are emitted, it is geometrically not exactly possible to provide both a covering and homogeneous light distribution inside an area to be illuminated (without running over) and the light falling on the area to be illuminated intensifies at a few certain regions.

With lighting systems of radiance from a single plane, the total light created runs over the aimed area of illumination and the light intensity (lux) falling on unit areas of the region to be illuminated is highly variable and away from the standards and due to this, light usage efficiency (lux/watt %) and quality are also very low. Here, with the invention, the purpose to be achieved is how much of the created light per unit power (lumen/watt) is usable efficiently and with homogeneous distribution quality.

Again, since the amount of light (lux) falling on unit areas are different, there are no continuous lighting systems (for example: the regions between the poles of road lighting systems are left dark). In the state of the art, the lighting fixtures traditionally used in/on avenues, streets, roads, highroads, stadiums, wide areas, etc. or indoors (including the known fixtures with LEDs), uncontrollably radiates light in every direction besides their purpose instead of targeting the actual area to be illuminated. The lights from the street fixtures are seen far away, even from the mountains. Therefore the light usage efficiency (lux/watt %) and homogeneous light distribution quality over the illumination area are very low.

The light emission efficiency (lumen/watt %) of fixtures comprising known power leds are relatively high but light usage efficiency (lux/watt %) of said emitted light is still low. Even though most of the sites used by people are quadrilateral, all of the lights sources used for lighting are circular or spherical and the sides and the corners of the illumination areas are left relatively dark. This invention related to a three dimensional fixture and a three dimensional lighting system providing full coverage, homogeneous light distribution and quadrilateral lighting, and a light source produced in accordance with said system, completely overcoming the disadvantages we mentioned above, is characterized by attaining high efficiency light (lumen/watt %) and the highest light usage efficiency (lux/watt %) by using this only in the area needed to be illuminated and providing the highest energy saving, homogeneous light distribution quality, with continuity and an environment friendly lighting.

The current technique WO 2010/071295 A2 reveals a LED street light which can effectively expand its illumination range by arranging and installing a plurality of LEDs with mutually different brightness on the concave or convex curved surface of the substrate and also installing them such that their brightness gradually increases from the center part of the curved surface to the edges. WO 2010/071295 A2 describes a method to expand an illumination range and brightness adjustment of LED spots.

Within the current technique, the structure of the illumination armature composed of convex or concave forms mentioned in the WO 2010/071295 A2 patent folder does not comply with the full coverage, homogenous light distribution, and the light source (la, lb) of a three dimensional lighting system capable of quadrilateral lighting.

Additionally, the new invention here provides technical data such as: "Virtual focal point(12) to determine the design of a three dimensional led lighting fixture- light source(la, lb), the equal distances of the planes of unit light position(8) from the virtual focal point (12) which yields in a unique light source(la, lb) by intersection of the planes of unit light position(8), a three dimensional led lighting fixture- light source(la, lb) design is performed, if the light source (la, lb) is desired to be between the virtual focal point (12) and the basic illumination area (6), with a convex (la) or if it is desired to be beyond the virtual focal point (12), with a concave (lb) plane of unit light source position (8)" these data is not given in the WO 2010/071295 A2 folder,

As mentioned in the description of our invention, unit light to illuminate the unit illumination areas(5) equally, basic illumination areas(6) composed of unit illumination areas(5) and the large illumination area(7) composed of basic illumination areas(6) by a homogenous light distribution has no similarity to the armature described in the WO 2010/071295 A2 folder.

Current technique US 2009/0257225 Al mentions about a method and a lamp having multiple illuminating angles and a plurality of locating faces to control the illuminating angle and scope of lamp.

The lamp described in the US 2009/0257225 Al patent folder for the current technique is not capable of implementing the three dimensional lighting system described in our invention folder, thus there exist no similarity in between them. The lamp described in US 2009/0257225 Al folder cannot cover a predefined quadrilateral area with a homogeneous light distribution, but just widens the light emission. But the three dimensional led lighting fixture- light source (la, lb) mentioned in our invention with unit lights on the plane of unit light positions (8) provides quadrilateral lighting that covers the edges and corners with equal light intensity beams distributed homogeneously over every point of the basic illumination area(6).

In the current technique described in US 7434959 Bl, a lamp is mentioned with a multiple LED structure. It describes the radiation intensity and resulting reduction in light scattering due to lamp (LED) positioning in the armature.

In the current technique described in US 7434959 Bl, mentions about the intensity of light radiation due to a multiple LED structure, however it does not mention about the illumination areas on target. On the other hand our invention provides detail about three dimensional lighting system to be realized by a light source (la, lb) where unit light sources with equal intensity light beams (2) to radiate in different angles illuminates the unit illumination areas(5) and the basic illumination areas(6) composed of those unit illumination areas(5).

In the current technique EP 2058581 A2 file mentions about a light with LEDs on it and the curve shaped radiation surfaces to carry LEDs together with explanation of the adjustment of the surface to be illuminated luminance and illumination.

However, the technical data we provide with our invention does not exist in EP 2058581 A2 folder. This data includes the following: "A three dimensional lighting system capable of quadrilateral lighting with a homogeneous light distribution and full coverage having Virtual focus(12) to determine the design of a light source (la, lb), equal distance in between the planes of unit light sources(8) and the virtual focal point (12) which results in a unique light source(la, lb) by intersections of them, a three dimensional led lighting fixture- light source(la, lb) design is performed, if the light source (la, lb) is desired to be between the virtual focal point (12) and the basic illumination area (6), with a convex (la) or if it is desired to be beyond the virtual focal point (12), with a concave (lb) plane of unit light source position (8), the unit illumination areas(5), basic illumination area(6) composed of unit illumination areas(5) and the large illumination area(7) is the whole area to be illuminated of the project composed of basic illumination areas(6) fully covered by that light source (la, lb) utilizing homogenous light distribution"

DE 20107420 Ul in the current technique is a description that refers to a 2 dimensional LED foil to be rolled in a curved shape to build up a 3 dimensional structure.

DE 20107420 Ul in the current technique about a LED lamp where SMD LED positioning circuit on a flexible 2 dimensional folio is rolled in a curved shape to build up a 3 dimensional form is mentioned. On the other hand, the three dimensional lighting system realized by a light source (l a, l b) described in our invention has no similarity with the one in DE 20107420 Ul neither in sense of structure nor in sense of methodology. The curved positioning of the unit light sources- LED differs from our invention since each individual unit light source in our invention has a dedicated planar surface.

This invention which is related with a full coverage, homogeneous light distribution and a three dimensional led lighting fixture having quadrilateral lighting and a light source to be produced in accordance with these specifications overcomes all of the disadvantages mentioned above for DE21017420 Ul . The main features can be listed as follows: High efficiency (% lumen/watt), using the unit light source directed precisely towards the area to be illuminated at the maximum light efficiency (% lux/watt) which results in a high energy saving, homogenous light distribution quality, and a continuous environment friendly system.

With the invention, a lighting system that can be harmonized with the geometric shape of the site being illuminated is constituted. With the invention, a lighting system providing optimal values of lighting that neither exceeds the standard of light thus causing energy consumption, nor fails it causing light insufficiencies, is obtained.

The invention, with the help of the three dimensional led fixture and the three dimensional led illumination area, provides the area desired to be illuminated to be fully covered by focused and adjusted light beams and all of the total light produced to be used, lighting of only the targeted area without exceeding the coverage area. It provides quadrilateral lighting with homogeneous distribution where the standard of light is attained at every unit area. Moreover, it provides an uninterrupted and complete lighting system by lighting the intermediate regions occurring in the lighting of very large areas.

With this invention, metrical lighting plans that are more realistically practical can now be produced. With the invention, other than all the light produced being directed to the illumination area thus being used in the maximum rate, the light pollution is decreased since the light is not ran over and an environment friendly lighting is provided. Since on a unit area, the needed lighting for that area only can be applied, energy saving is attained. The present invention from this point on, is described in detail only by way of example, mentioning the figures attached; in these drawings

Figure 1 is the general view of the convex embodiment of the three dimensional lighting method.

Figure 2 is the A-detail view of the virtual focal point and the convex lighting fixture of the three dimensional lighting method.

Figure 3 is the general view of the concave embodiment of the three dimensional lighting method.

Figure 4 is the B-detail view of the virtual focal point and the concave lighting fixture of the three dimensional lighting method.

Figure 5 is the general view of the three dimensional fixture and a three dimensional lighting plan method.

Figure 6 is the view of the three dimensional convex and concave lighting fixture embodiment according to the virtual focal point and basic illumination area. Definition of the References:

Number NAME OF PART

la Convex light source

lb Concave light source

2 Light beam

3 Planar normal of the unit light position

4 Center of unit illumination area

5 Unit illumination area

6 Basic illumination area

7 Large area

8 Plane of unit light position

9 Cooling fins

10 Front surface of the convex light source

11 Front surface of the concave light source

12 Virtual focal point The invention, concerning a three dimensional fixture and a three dimensional lighting system and a light source produced accordingly, providing full coverage, homogeneous light distribution and quadrilateral lighting is essentially characterized in that it comprises; a light source (la, lb), a light beam (2) emanated from a unit light source, a planar normal of the unit light position (3) at which the emanated light beam(2) is directed towards, a unit illumination area (5) illuminated by the unit light source, a center of unit illumination area (4), a basic illumination area (6) that consists that is formed by joining unit illumination areas (5), a large area (7) that consists that is formed by joining basic illumination areas (6), a plane of unit light position (8) on the light source (la, lb), cooling fins (9) on the convex light source (la), a plane of convex light source position (10) on the convex light source (la) and a front surface of the concave light source (11) on the concave light source (lb) and a virtual focal point (12).

Since in the state of the art up to now, the most ideal light sources with smallest volume that can provide directable radiant angles are power led lighting components, the examples concerning the invention incorporates these. The invention can be applied to any kind of lighting component.

Firstly a three dimensional lighting plan with LEDs is performed: For a large area to be illuminated with full coverage, homogeneous light distribution and entirely continuous without exceeding the boundaries, the large area (7) is divided into basic illumination areas (6). A basic illumination area (6) is the area to be lit by a three dimensional led fixture to be designed. If the large area (7) to be illuminated is a road, the basic illumination area (6) is the square area whose length is taken to be as long as the width of the road and this area is the area that will be lit by one three dimensional lad fixture.

Again the basic illumination areas (6) are divided into the smallest unit illumination area (5) a number of times as many as the number of power LEDs to produce the necessary total amount of light. The smallest unit illumination area (5) is the area that can be illuminated according to the desired standard (lm/m²) with respect to the capacity of a single unit light source-led.

A basic illumination area (6) consists of unit illumination areas (5) as many as the number of unit light source-power LEDs that will fulfill needed value of light intensity. And. a three dimensional led fixture/light source (la, lb) to illuminate a basic illumination area (6) with the desired light intensity, full coverage and a homogeneous light distribution, contains unit light sources-power LEDs as many as the number of unit illumination areas (5). The invention can be applied to parceled quadrilateral basic illumination areas (6) of various sizes. Yet the most ideal basic illumination area (6) calculations can be performed for quadrilateral areas of a square shape.

Unit illumination areas (5) constitute basic illumination areas (6) in a continuous, integral manner and the basic illumination areas (6) constitute a one-piece three dimensional led lighting plan, again in a continuous, integral manner. The design of the three dimensional led fixtures is determined by the number of unit light sources-power LEDs contained and planes of unit light source positions (8) that are distinct from each other, position in space of the fixture to be set with respect to the basic illumination area to be illuminated from up or the sides and the known needs in led fixture designs (circuitry, thermal cooling, isolation etc.). In three dimensional led fixtures, each unit light source-led distributes its own light over its plane of unit light source position (8) with aid of the known reflector and spans the unit illumination area (5) assigned to itself, remaining inside its boundaries and targeting the center of unit illumination area (4) by emitting its own light beam (2).

The planar normals of the unit light positions (3) of every plane of unit light position (8) that the unit light sources-power LEDs on the three dimensional fixture hanging with a view angle in angular accordance with the vertical and the virtual focal point (12) related to a basic illumination area (6) at a certain position, are directed towards the centers of unit illumination area (4) at their assigned basic illumination area. The radiant angles of every power led have been proportioned in a way that they will cover the unit illumination area (5) that each will illuminate. As a result, all the unit illumination areas (5) are covered by the directed light beams (2) of the LEDs directed to the illumination areas (5) and all of a basic illumination area (6) is lit with a homogeneous light distribution quality. With the three dimensional led lighting plan and the three dimensional led fixtures, all of the produced light is used according to purpose with the highest probable efficiency (lux/watt %) and the best light distribution quality, a quadrilateral and complete illumination is obtained by the uninterrupted illumination continuity between the unit illumination areas (5) and the basic illumination areas (6).

Example:

It is assumed that the width of a street is 10 m and this street is to be illuminated with a light intensity value of 50 lux. By picking 10m sideways equal to the width of the street, the basic illumination area (6) is calculated as - lO m x lO m - 100 m². A light source (la, lb) of 5000 lumens (lm) is needed for a basic illumination area (6) of 100 m². (50 lux * 100 m²). If light of 100 lm net can be obtained from each unit light source-power led to be used in this project, than it is calculated that 50 power LEDs will be needed. The basic illumination area (6) of 100 m2 determined by using the width of the street as a basis, is divided into 50 equal unit illumination areas (5). Every unit illumination area (5) of 2 m2 is illuminated by a power led providing a value of 50 lux. The radiant angles of the led reflectors/lenses are calculated using their own coverage light beams (2), in a way to provide full coverage inside their own boundaries. On the front surface of the three dimensional led fixture to be produced, there must be 50 power leds that can produce a 100 lumens of light net and 50 different planes of unit light source positons (8) that will have a view of the unit illumination areas (5) for each led to cover, together with the planar normals of the unit light positions (3). For the 50 different planes of unit light source positions (8) to be placed optimally on the front surface of the three dimensional led fixture (10, 11), the planar normals of the unit light positions (3) are assigned towards the centers of unit illumination areas (4) as if they are originated in the virtual focal point (12). The virtual focal points (12) are the vectorel centers where the light beams (2) passing from the centers of unit illumination areas (4) to planes of unit light positions (8) are clustered. The surfaces of the three dimensional lighting fixtures can be designed to be concave (lb) or convex (la). A three dimensional led lighting fixture design is performed, if the light source (la, lb) is desired to be between the virtual focal point (12) and the basic illumination area (6), with a convex (la) or if it is desired to be beyond the virtual focal point (12), with a concave (lb) plane of unit light source position (8). A three dimensional led fixture is thus planned with this method.

Claims

1- The invention, concerning a three dimensional fixture and a three dimensional lighting system and a light source produced accordingly, providing full coverage, homogeneous light distribution and quadrilateral lighting is essentially characterized in that it comprises;

- Quadrilateral basic illumination area(6) illuminated and covered using multiple and symmetrical light beams(2) having equal light intensity but different radiation angles within its boundaries with a homogeneous light distribution by a light source (la, lb) composed of multiple unit light sources.

- Large Area (7) to be composed of quadrilateral basic illumination areas(6) where each individual light source (la, lb) illuminates and covers these basic illumination areas(6) with a homogeneous light distribution and with no interruption on intersections of the basic illumination areas(6).

- Unit Illumination Areas(5) covered by equal intensity light beams(2) with different radiant angles due to positioning of the unit light sources, within the basic illumination area(6) where the basic illumination area(6) is divided equally in accordance with the quantity of unit light source on the light source (la, lb).

- Unit illumination Area Center(4) to be determined as to be the center of each individual unit illumination area(5)

- Planar normal of the unit light position(3), to be defined from each individual unit illumination area center(4) to the virtual focal point(12)

- Virtual focal point(12) from where all unit light sources on the light source (la, lb) radiates , also the planar normal of the unit light position(3) intersection passing through the unit illumination area centers(4) within the Basic Illumination Area(6). - The plane of unit light source position (8) where the unit lighting source's radiant axis is coaxial with the planar normal of the unit light position(3) , departing from the virtual focal point (12) and unit illumination area center(4) and constructed at a predefined distance from virtual focal point( 12)

- A multi planar light source (la, lb) composed of the planes of unit light source (8) consolidated in one piece where these planes of unit light source (8) can intersect with each other and plane at an equal distance from the virtual focal point (12) at which the planar normal of unit light position (3) intersects departing from the unit illumination area centers (4). - A light source(la,lb) to have its position designed to be determined in accordance with Virtual Focal Point(12) and basic illumination area(6)

- Light source (la, lb) to be mono block due to the planes of unit light position(8) intersecting each other where their planar normal of unit light positions(3) depart from the unit illumination area centers(4) and constructed at an equal distance from the virtual focal point(12).

- A light source(la, lb) where its design is affected based on basic illumination area(6) size as well as the quantity of the unit light sources and having planar normal of unit light position(3) to be virtually departed from a unique center- virtual focal point(12). - Three dimensional led lighting fixture position due to virtual focal point (12): light source(la, lb) design is performed, if the light source (la, lb) is desired to be between the virtual focal point (12) and the basic illumination area (6), with a convex (la) or if it is desired to be beyond the virtual focal point (12), with a concave (lb) plane of unit light source position (8)

2- According to Claim 1 , a system for a three dimensional fixture and a three dimensional lighting plan, providing full coverage, homogeneous light distribution and quadrilateral lighting and a light source to be compatible to this system and produced in three dimensional multi planar form to reflect the special positions of its multiple unit light sources is essentially characterized in that it comprises;

a light source (la, lb), a light beam emanated from the light source (2), a planar normal of the unit light position (3) at which the emanated light beam is directed towards a center of unit illumination area (4), unit illumination areas (5) equally illuminated - covered by exactly the same number of unit lights, a basic quadrilateral illumination area (6) that is formed by the joining of unit illumination areas (5) with unit lights distribution homogenously without any blind points , a large area (7) that is formed by the joining of basic illumination areas(6) with no dark regions at joining borders so that continuity between the basic illumination areas(6),

3- According to Claim 1, a system for a three dimensional fixture and a three dimensional lighting plan, providing full coverage, homogeneous light distribution and quadrilateral lighting and a light source to be compatible to this system and produced in three dimensional multi planar form to reflect the special positions of its multiple unit light sources is essentially characterized in that it comprises; the light source(la,lb) according to the virtual focal point (12) and basic illumination area(6) determines the design of the light source(la,lb); light source(la, lb) design is performed, if the light source (la, lb) is desired to be between the virtual focal point (12) and the basic illumination area (6), with a convex (la) or if it is desired to be beyond the virtual focal point (12), with a concave (lb) plane of unit light source position (8)

4- According to Claim 1, a system for a three dimensional fixture and a three dimensional lighting plan, providing full coverage, homogeneous light distribution and quadrilateral lighting and a light source to be compatible to this system and produced in three dimensional multi planar form to reflect the special positions of its multiple unit light sources is essentially characterized in that it comprises;

The planes of unit light source position (8) can intersect with each other where their planar normal of the unit light position(3) departs from the unit illumination area centers(4) and are constructed at a predefined distance from virtual focal point(12),thus forms a mono block light source( 1 a, 1 b)

5- According to Claim 1, a system for a three dimensional fixture and a three dimensional lighting plan, providing full coverage, homogeneous light distribution and quadrilateral lighting and a light source to be compatible to this system and produced in three dimensional multi planar form to reflect the special positions of its multiple unit light sources is essentially characterized in that it comprises;

Light Source(la,lb) design to be based on basic illumination area(6) size as well as the quantity of the unit light sources and having planar normal of unit light position(3) to be virtually departed from a unique center-virtual focal point(12).