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WO2008040690A1 - Module lumineux à diode électroluminescente avec récepteur - Google Patents

Module lumineux à diode électroluminescente avec récepteur Download PDF

Info

Publication number
WO2008040690A1
WO2008040690A1 PCT/EP2007/060350 EP2007060350W WO2008040690A1 WO 2008040690 A1 WO2008040690 A1 WO 2008040690A1 EP 2007060350 W EP2007060350 W EP 2007060350W WO 2008040690 A1 WO2008040690 A1 WO 2008040690A1
Authority
WO
WIPO (PCT)
Prior art keywords
side walls
light module
light
partial surfaces
module according
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.)
Ceased
Application number
PCT/EP2007/060350
Other languages
German (de)
English (en)
Inventor
Martin Michel
Mathias Benz
Alex Janutin
Urs A. Weidmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
INNOLED AG
Original Assignee
INNOLED AG
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 INNOLED AG filed Critical INNOLED AG
Priority to EP07820736A priority Critical patent/EP2076897B1/fr
Priority to DE502007006514T priority patent/DE502007006514D1/de
Priority to AT07820736T priority patent/ATE498882T1/de
Publication of WO2008040690A1 publication Critical patent/WO2008040690A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • 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
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/0004—Personal or domestic articles
    • F21V33/0012—Furniture
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/0418—Constructional details
    • G09F13/0422—Reflectors
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/08—Signs, boards or panels, illuminated from behind the insignia using both translucent and non-translucent layers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/14—Arrangements of reflectors therein
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/14—Arrangements of reflectors therein
    • G09F2013/147—Arrangements of reflectors therein plane reflectors

Definitions

  • the invention relates to a light module referred to in the preamble of claim 1 Art.
  • Such light modules are available in many designs, on the one hand as modules, whose dimensions correspond to a predetermined standard and which are joined together to form a coherent ceiling or wall, which in turn serves as a means of illumination.
  • modules with special masses for specific applications, e.g. as a lighting device in a kitchen.
  • modules are used as light boxes for labels, signaling, as well as advertising purposes and as scoreboards.
  • Conventional light modules usually contain fluorescent lamps whose disadvantages are the high power consumption and the limited life.
  • the invention has for its object to develop a light module that has a lower power consumption and virtually no maintenance during the entire life.
  • the light module according to the invention contains commercially available light-emitting diodes, which are generally known as LEDs (light-emitting diodes). Their power consumption is the fraction of the power consumption of a fluorescent, incandescent or halogen lamp with the same light output.
  • the light module comprises a base element and a cover plate that can be detachably fastened to the base element.
  • the cover plate is translucent, but not transparent. It diffuses incident light diffusely.
  • the bottom element has a bottom and two projecting from the ground, opposite side walls. On each of the two side walls, a bar is attached, which is inclined relative to the side wall at a predetermined angle. On the side of the ledge facing the floor, there are LEDs that shine towards the floor.
  • the floor is designed to reflect light.
  • the reflection properties of the floor are changed towards the two side walls in order to compensate for the light radiation of the LEDs falling off towards the center and reflecting from the ground.
  • the room which is bounded by the floor element and the cover plate, there is air. Waveguides and / or optical fibers are not needed. This space and thus the entire light module is therefore free of light-conducting components.
  • the floor is subdivided into a multiplicity of first and second partial surfaces.
  • the area occupied by the first partial areas increases in a certain area compared to the area occupied by the second partial areas with increasing distance from the side wall to the center between the side walls.
  • the first partial surfaces differ from the second partial surfaces in the reflection characteristic: the first partial surfaces diffuse the light non-diffusely, whereas the second partial surfaces scatter the light diffusely in comparison thereto.
  • the first partial surfaces are for example made of high-gloss aluminum and have a reflective surface, while the second part surfaces are provided with a matt white surface.
  • the first partial areas differ from the second partial areas in the reflectivity, the reflectivity Ri of the first partial areas being greater than the reflectivity R 2 of the second partial areas.
  • FIG. 2 shows the bottom element with the cover plate of the light module applied in a section along the line II of FIGS. 1, 3, 5 illustrate possibilities for locally changing the reflectivity of the bottom of the floor element by means of a structured reflection layer, and FIG Details of the invention with reference to a section of Fig. 3rd
  • the light module according to the invention comprises a bottom element and a cover plate that can be detachably fastened to the bottom element.
  • Fig. 1 shows the bottom element 1 in plan view.
  • 2 shows the bottom element 1 with the cover plate 2 in a section along the line II of FIG. 1.
  • the bottom element 1 consists of a bottom 3 and at least two opposing side walls 4 and 5 projecting from the bottom 3.
  • the bottom element 1 contains four side walls 4 to 7, which form a peripheral wall.
  • the bar 8 is inclined relative to the side wall 4 and 5 at a predetermined angle ⁇ .
  • On the bottom 3 side facing the strip 8 strips 9 are mounted with light emitting diodes 10 (LED).
  • LED light emitting diodes
  • strips 9 are commercially available in many designs.
  • the strips 9 comprise, for example, LED's 10 arranged in a row, all of which emit white light, or LED's 10 according to the RGB standard, from which every third red light, green light or blue light alternately emits light.
  • a control unit controls the LED 's 10. If red, green and blue LED's 10 are present, then the controller can drive the LED's 10 so that the light module illuminates in any color.
  • the space bounded by the bottom 3, the side walls 4, 5 and optionally 6, 7 and the cover plate is filled with air, but this space is not sealed airtight to the environment. Light-conducting elements such as waveguides and / or light guides are not needed.
  • the LED's 10 illuminate the bottom 3, which is light-reflecting and serves as a reflector.
  • the light emitted by the LED's 10 toward the ground light is therefore reflected at the bottom 3 and passes through the cover plate 2 into the open.
  • the cover plate 2 is translucent, but not transparent. Their task is to diffuse the incident light diffusely in all directions.
  • the cover plate 2 is for example a milky cloudy Plexiglas plate.
  • the angle ⁇ is chosen so that the light cone 11 of the LED's 10 in the region 12 of the center of the bottom 3 partially overlap.
  • the lighting of the bottom 3 by the LED's 10 is not uniform, because the intensity of the LED's 10 radiated light decreases with increasing distance from the side wall 4 and 5 respectively.
  • the reflection properties of the bottom 3 are therefore changed from the middle between the side walls 4 and 5 against the side wall 4 and 5, so that the cover plate 2 appears evenly bright to the human eye.
  • the reflectivity of the bottom 3 is advantageously at a maximum, at least in the middle.
  • the arrows 13 of equal length illustrate the uniformity of the light radiation of the light emitted by the cover plate 2.
  • the bottom 3 of the bottom element 1 advantageously has a surface that is as white and as matt as possible, which diffuses incident light as diffusely as possible and onto which a reflection layer structured in the surface is applied, which consists, for example, of high-gloss aluminum.
  • the bottom 3 is therefore divided into at least a first partial surface made of high-gloss aluminum and second partial surfaces with a matt, white surface.
  • the color of the white surface is, for example, what is known as the whitest white, "traffic white 9016.”
  • the matt surface reflects the incident light diffusely.
  • the color white causes a very large proportion of the incident light to be scattered back and absorbs only a very small portion of the incident light
  • the reflection layer reflects the incident light non-diffusely, since both the first and the second sub-areas have a high reflectivity, resulting in a high luminous efficacy.
  • the subdivision of the surface of the bottom 3 into first and second sub-areas with different reflection characteristics, namely diffuse reflection and non-diffuse reflection causes the edge of the cover plate 2 appears as bright as the middle parts of the cover plate second
  • the bottom element 1 can be made of metal, for example, whose surface is stove-enamelled, or made of plastic.
  • the reflectivity of such a surface is relatively low, ie the surface acts as an absorption layer, which absorbs a large proportion of the incident light.
  • a surface-structured reflection layer is applied, so that the reflectivity of the bottom 3 increases from the side walls 4 and 5 toward the center between the side walls 4 and 5.
  • the reflective layer may be, for example, a reflective foil or a vapor deposited metal layer or simply a white surface.
  • Fig. 3 shows the bottom 3 and the side walls 4 to 7 in plan view.
  • the drawing is not drawn to scale.
  • the floor 3 is divided into two areas: a first contiguous area 14 and a second area 15 complementary to the first area 14 (The area 15 consists of two separate subregions, which are located on the left and right of the first area 14 in FIG. 3).
  • the first region 14 of the bottom 3 is covered with a reflection layer 16.
  • FIG. 4 shows the region C bounded by a dashed line in FIG. 3 in order to explain details of the invention.
  • the first side wall 4 is shown only to illustrate the position of the region C relative to the first side wall 4.
  • the entire bottom 3 of the bottom element 1 is by definition subdividable into first part surfaces 19 with first reflection properties and second part surfaces 20 with second reflection properties.
  • the surface occupied by the first partial surfaces 19 increases in the area of the saw tooth with increasing distance from the side wall 4 in comparison to the surface occupied by the second partial surfaces 20.
  • the shape of the edge 17 between the two regions 14 and 15 is not limited to the sawtooth shape.
  • the edge 17 may also be sinusoidal, wavy, etc., or bounded by exponential curve curves.
  • first partial areas 19 are designed such that they reflect the incident light non-diffusely, and the second partial areas 20 so that they reflect the incident light diffusely, then this means that light emitted by the LED's 10, the light on the first Area 14, as reflected by a mirror, and that light emitted by the LED's 10, that on the second area
  • the reflection layer 16 does not form a contiguous area but consists of a multiplicity of first partial areas 19 and second partial areas 20.
  • the density of the first partial areas 19 increases from the side walls 4 and 5 toward the center ,
  • the first faces 19 are dots as shown.
  • the points can be distributed regularly or randomly.
  • the size of the dots is of minor importance, it can vary from a few microns to a few millimeters or even centimeters. This example is particularly suitable if the reflection layer 16 is produced by vapor deposition of metal or by spraying on a material which is otherwise reflective, for example by screen printing.
  • the area occupied by the first partial surfaces 19 increases in comparison with the area occupied by the second partial surfaces 20 with increasing distance from the side wall 4.
  • One Area 12, which is located in the middle between the two side walls 4 and 5, is completely covered with the reflection layer 16, since it is a question that the light module glows as bright as possible for a given power of the LED's 10.
  • the two outermost LEDs 10 of a strip 8 are arranged at a predetermined minimum distance A (FIG. 1) to the adjacent side wall 6 or 7, so that no or almost no light emitted directly by the LED's 10 impinges on the side walls 6 and 7 ,
  • A predetermined minimum distance
  • the LEDs 10.1, 1 and 10.1, n in the other strip 8, the LEDs 10.2, 1 and 10.2, n.
  • the side walls 6 and 7 are coated from a material or on the side facing the bottom 3 with a material which has a high light absorption capacity and low light reflectance, respectively.
  • the absorption capacity for light is so great that the cover plate 2 appears evenly bright to the human eye.
  • the sidewalls 6 and 7 may alternatively also be made with a very white and matt surface to diffuse the incident light, i. spread as wide as possible.
  • the light module according to the invention ensures uniform brightness distribution over the entire, diffusely scattering, translucent cover plate 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

L'invention concerne un module lumineux comprenant un élément de fond (1), qui présente un fond (3) et deux parois latérales (4, 5) partant du fond (3), se faisant face, et une plaque de couverture pouvant être fixée au niveau de l'élément de fond (1), qui est transparente et diffuse la lumière incidente. Au niveau de chacune des deux parois latérales (4, 5) est fixée une baguette (8) qui est inclinée par rapport à la paroi latérale (4, 5) selon un angle prédéterminé. Sur le côté de la baguette (8) tournée vers le fond (3) sont installées des diodes électroluminescentes (LED) (10), qui éclairent le fond (3). Le fond (3) est formé de manière à réfléchir la lumière, les propriétés de réflexion du fond (3) dans le secteur central entre les deux parois latérales (4, 5) étant différentes de celles à proximité des deux parois latérales (4, 5). Le module lumineux assure une répartition régulière de la clarté par l'intermédiaire de la totalité de la plaque de couverture transparente diffusante.
PCT/EP2007/060350 2006-10-02 2007-10-01 Module lumineux à diode électroluminescente avec récepteur Ceased WO2008040690A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP07820736A EP2076897B1 (fr) 2006-10-02 2007-10-01 Module lumineux à diode électroluminescente avec réflecteur
DE502007006514T DE502007006514D1 (de) 2006-10-02 2007-10-01 Led-lichtmodul mit reflektor
AT07820736T ATE498882T1 (de) 2006-10-02 2007-10-01 Led-lichtmodul mit reflektor

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH15682006 2006-10-02
CH1568/06 2006-10-02
CH2116/06 2006-12-21
CH02116/06A CH698577B1 (de) 2006-10-02 2006-12-21 LED-Lichtmodul mit Reflektor.

Publications (1)

Publication Number Publication Date
WO2008040690A1 true WO2008040690A1 (fr) 2008-04-10

Family

ID=41064526

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/060350 Ceased WO2008040690A1 (fr) 2006-10-02 2007-10-01 Module lumineux à diode électroluminescente avec récepteur

Country Status (4)

Country Link
CH (1) CH698577B1 (fr)
DE (1) DE502007006514D1 (fr)
ES (1) ES2361392T3 (fr)
WO (1) WO2008040690A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103216739A (zh) * 2012-01-19 2013-07-24 南亚光电股份有限公司 平面发光二极管照明
WO2015187514A1 (fr) * 2014-06-01 2015-12-10 Osram Sylvania Inc. Luminaire avec réglage de reflet

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07230709A (ja) * 1994-02-16 1995-08-29 Patoraito:Kk 信号表示灯の光源構造
GB2310525A (en) * 1996-02-24 1997-08-27 Ronnie Revell Illuminated display device
JP2005031596A (ja) 2003-07-11 2005-02-03 Sureddo Kk 表示器具
JP2005174652A (ja) * 2003-12-09 2005-06-30 Matsushita Electric Ind Co Ltd 面発光装置
JP2005331810A (ja) * 2004-05-21 2005-12-02 Komaden:Kk 内照式ｌｅｄ表示装置及びｌｅｄユニット

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07230709A (ja) * 1994-02-16 1995-08-29 Patoraito:Kk 信号表示灯の光源構造
GB2310525A (en) * 1996-02-24 1997-08-27 Ronnie Revell Illuminated display device
JP2005031596A (ja) 2003-07-11 2005-02-03 Sureddo Kk 表示器具
JP2005174652A (ja) * 2003-12-09 2005-06-30 Matsushita Electric Ind Co Ltd 面発光装置
JP2005331810A (ja) * 2004-05-21 2005-12-02 Komaden:Kk 内照式ｌｅｄ表示装置及びｌｅｄユニット

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103216739A (zh) * 2012-01-19 2013-07-24 南亚光电股份有限公司 平面发光二极管照明
WO2015187514A1 (fr) * 2014-06-01 2015-12-10 Osram Sylvania Inc. Luminaire avec réglage de reflet

Also Published As

Publication number Publication date
CH698577B1 (de) 2009-09-15
ES2361392T3 (es) 2011-06-16
DE502007006514D1 (de) 2011-03-31

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