WO2009152848A1 - Boîtier comprenant des diodes électroluminescentes - Google Patents

Boîtier comprenant des diodes électroluminescentes Download PDF

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Publication number
WO2009152848A1
WO2009152848A1 PCT/EP2008/057615 EP2008057615W WO2009152848A1 WO 2009152848 A1 WO2009152848 A1 WO 2009152848A1 EP 2008057615 W EP2008057615 W EP 2008057615W WO 2009152848 A1 WO2009152848 A1 WO 2009152848A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
leds
accordance
substrate
light
Prior art date
Application number
PCT/EP2008/057615
Other languages
English (en)
Inventor
Johan Behen
Bruno Cosijns
Olivier Douxchamps
Sebastien Malchaire
Original Assignee
Agc Flat Glass Europe Sa
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 Agc Flat Glass Europe Sa filed Critical Agc Flat Glass Europe Sa
Priority to PCT/EP2008/057615 priority Critical patent/WO2009152848A1/fr
Priority to EP08761106A priority patent/EP2299800A1/fr
Priority to CN2008801298665A priority patent/CN102065679A/zh
Publication of WO2009152848A1 publication Critical patent/WO2009152848A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
    • A01G9/249—Lighting means

Definitions

  • This invention relates to housing for the growth of photosynthetic organisms.
  • Photosynthetic organisms grow thanks to light. Plants require two wavelength range well defined. From wavelengths in the blue (more energetic) , plants can synthesize glucose, and from glucose and wavelengths in the red, plants can produce cells. In nature, light is provided by the sun. However, there are periods during which the light is not optimal. For example, in the morning, evening or in winter, the blue spectrum is reflected on the ozone layer and only a small portion of the spectrum reaches the earth's surface which can lead to deficiency in red color for photosynthetic organism. It can also happen that a plant needs vary from period to period. The proportion of red light over the blue light could be insufficient. The use of artificial light can supplement these deficiencies and encourage the growth of plants.
  • LEDs luminaries-based light-emitting diodes
  • LED luminaires block a portion of natural light (creating shadows in the greenhouse during periods with high exposure to the sun) and on the other hand, due to the fact that these luminaries are heavy, they require the use of opaque structures which also reduce the spread of sunlight toward the photosynthetic organisms present in the greenhouse.
  • the invention in at least one embodiment, aims to provide a housing or chamber for the growth of photosynthetic organisms which allows for a good illumination of the photosynthetic organisms thanks to natural light and thanks to artificial light.
  • the invention in at least one embodiment, also aims to provide such a solution which makes it possible to compensate for spectral holes in the spectrum of natural light and more particularly to compensate for the absence of light at night.
  • the invention in at least one embodiment, also aims to provide such a solution which makes it possible to obtain a uniform distribution of light provided to the photosynthetic organisms.
  • the invention in at least one embodiment, also aims to provide such a solution which makes it possible to obtain an artificial light the spectrum of which is different toward different zones of the housing or toward different photosynthetic organisms in the housing.
  • the invention in at least one embodiment, also aims to provide such a solution which allows to associate a plurality of light sources in the housing.
  • the invention in at least one embodiment, also aims to provide such a solution which is simple and cost effective.
  • the present invention provides a housing as defined in Claim 1.
  • the dependent claims define features of preferred or alternative embodiments of the invention.
  • Fig. 1 is a schematic view of a green house according to an embodiment of the invention.
  • Fig 2 is a plan view of a panel of the green house ;
  • Fig 3 is an expanded cross section
  • Fig 4 is a schematic view of one form of electrical pathways interconnecting adjacent LEDs
  • Fig 5 is a schematic view similar to Fig 3 with an alternative form of LEDs
  • Fig 6 is a schematic view of another form of electrical pathways interconnecting adjacent LEDs.
  • panels of laminated glass with integrated electronic components such as light emitting diodes (LED), are known, e.g. for displaying information or for lighting purposes.
  • the manufacturing of a panel of laminated glass with electronic components typically comprises the steps of depositing a conducting layer on the first layer of glass substrate, forming conductive paths and patterns in the conductive layer and depositing of electronic components on the conducting layer, connected to the conductive paths.
  • the plastics interlayer is then deposited on the conducting layer.
  • the sandwich is obtained by the application of the second layer of glass on the plasties interlayer, which is then laminated as outlined before.
  • EP 1 437 215 (the description of which is considered to be incorporated in the present description by reference) describes such a panel of laminated glass with at least two glass substrates and one or more plastic interlayers, such as PVB, in which the electronic components as well as their connecting circuits are formed between the two glass substrates, wherein the connecting circuits are formed from at least one conductive layer. Electrical power from a power source can be applied to the conductive layer of the panel of laminated glass of EP 1 437 215 via a connector as described in EP1840449A1 (the description of which is considered to be incorporated in the present description by reference).
  • a housing for instance, a green house 100, as illustrated by figure 1, the panels 10 of which are panels of laminated glass containing embedding uniformly distributed LEDs as described hereafter.
  • the LEDs in the panels of the green house are chosen to be SM ("Surface Mount") packaged RGB (Red, Green, Blue) LEDs manufactured by STANLEY (e.g. ref. URGB1313C- TR the dimensions of which are 1.6 mm X 1.5 mm X 0.7mm) which can be controlled such as to select the appropriate spectral light for the photosynthetic organisms (plant, biota, alga, bacterium, ... ) contained in the green house.
  • the green house is a bio reactor which contains alga 101 (and salted water) and which is transparent in order to let natural light 102 illuminating alga and which, thanks to the uniformly distributed RGB LEDs, allow for uniform illumination of alga with spectrally selected light (e.g. for compensation of spectral holes in natural light spectrum) and for illumination of alga when natural light is reduced or absent (e.g. at night) .
  • spectrally selected light e.g. for compensation of spectral holes in natural light spectrum
  • illumination of alga when natural light is reduced or absent e.g. at night
  • the inner surface 14 of the first glass sheet 11 is provided with a substantially colour neutral CVD coating stack 15 comprising an SiOxCy undercoat and an overlying SnO2:F coating.
  • the coating has a resistance of about 15 ohms per square.
  • Interruptions 16 in the coating stack 15 formed by laser ablations about 70 microns wide define electrically conducting pathways between LEDs 17 which are soldered or attached with an electrically conductive adhesive 19 either side of the laser ablations 16.
  • Each LED is in direct contact with the coating 15 of the first glass sheet 11, the spacing shown in FIG 3 being schematic and not representative of the actual positioning.
  • Additional laser ablations 18 divide the array of LEDs 17 in to individual lines of LEDs 101, 102, 103, etc which are connected in series. The lines of LEDs are connected to bus bars (not shown) positioned at opposite edges 121 , 122 of the glazing panel.
  • the LEDs are adapted to provide illumination through the second glass sheet 12, i.e. without passage through or hindrance by the conductive pathways provided by the coating layer 15.
  • the LEDs are arranged in a regular grid at 5cm intervals such that the array of diodes covers substantially the entire area of glazing panel.
  • Each LED has a surface area of about 4mm 2 .
  • each LED 17 is a RGB LED having three individual light emitting dies within its packaging.
  • Each die has an associated connection or lead 21 , 22 23 arranged at the ⁇ exterior of the packaging which is electrically connected to the its associated electrical pathway 31, 32 33.
  • connection portion 35 of electrical pathway 32 has a width of the order of 1 to 2 mm and is in the form of a narrowing of the transfer portion 34 of the electrical pathway.
  • Transfer portion 34 may have a width of the order of 20 to 60 mm.
  • three individual LEDs 41, 42 and 43 are arranged together in a cluster. These may be individual red, green and blue emitting LEDs.
  • the narrowing of the electrical pathway 52 from the transfer portion 54 to form the connection portion 55 is achieved progressively rather than in a step. This may facilitate current flow within the electrical pathway; it may reduce the risk of creating hot spots; it may be more convenient to manufacture.
  • another panel according to the invention can be obtain by associating the first and second glass sheets so as to let between them a gas (air, argon, ... ) filled space like an insulating glazing.
  • the green house according to the invention allow for illuminating the photosynthetic organism contained in the housing with artificial light with spectrally selected light (e.g. for compensation of spectral holes in natural light spectrum) and with natural light which is not blocked by the green house or by the light sources contained in the green house.
  • the invention concerns all type of housing for the growth of photosynthetic organisms (plant, biota, alga, bacterium, ...
  • the housing can be a green house, an aquarium, a bioreactor, a vivarium, a veranda, ... or other housing which can be closed or opened.
  • the housing can have open edges in order to cool indoor temperature by air circulation in the housing.
  • Such an open housing can be useful for alga bioreactor applications.
  • the embedded LEDs can be any kind of LEDs (die, SM packaged, ... ) , any color LEDs (white, blue, red, RGB... ) and can be uniformly distributed or randomly distributed in the glass panel or can also be positioned in the glass panel such as to illuminate more particularly one or a plurality of zones of the housing or in order to illuminate a first zone of the housing with light which has a blue dominant spectrum and other part of the housing with red dominant spectrum ...
  • At least one or each LED can be associated with an optic such as a lens in order to obtain a collimated beam directed on particular zone of the housing.
  • LEDs in the panels of a housing according to the invention instead of using LED based luminaires in the housing can allows for a good illumination of the photosynthetic organisms thanks to artificial light but also thanks to natural light due the fact that small surface LEDs do not (or substantially do not) block artificial light (LEDs substantially do not create shadow effect in the housing) .
  • the housing according to the invention makes it possible to compensate for spectral holes in the spectrum of natural light and more particularly to compensate for the absence of light at night.
  • LEDs are uniformly distributed in each panel of the housing according to the invention, we obtain a uniform distribution of light provided to the photosynthetic organisms.
  • a greenhouse for growing plants or a bioreactor for the cultivation of algae (or any other housing for the growth of photosynthetic organism) according to the invention will far less suffer the adverse effects of classical artificial light sources which are a poor performance (spectrum wavelength too broad or not perfectly adapted (neon)), a significant reduction of light received during periods of sun exposure (shadow effect) and an inhomogeneous distribution of light.
  • classical artificial light sources to minimize the shadow areas, one is tempted to limit the number of light sources, this problem disappears in the case where LEDs are inserted in the glass.
  • a housing according to the invention we can choose (or select precisely) the spectrum of light that is provided to the photosynthetic organism in order to optimize photosynthesis (spectrum is chosen according to the needs of these organisms), the shadow effect is minimal as the LED have a very small surface (and therefore create substantially no shadow effect) and as it is no more necessary (contrary to classical solutions) to use opaque structures for the binding of the light sources in the housing.
  • the LEDs can be distributed over a wide area in the housing which can produce homogeneous light toward the photosynthetic organisms.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Cultivation Of Plants (AREA)

Abstract

L'invention porte sur un boîtier (100) pour la croissance d'organismes photosynthétiques comprenant au moins deux panneaux transparents (10) comprenant chacun plusieurs diodes électroluminescentes.
PCT/EP2008/057615 2008-06-17 2008-06-17 Boîtier comprenant des diodes électroluminescentes WO2009152848A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/EP2008/057615 WO2009152848A1 (fr) 2008-06-17 2008-06-17 Boîtier comprenant des diodes électroluminescentes
EP08761106A EP2299800A1 (fr) 2008-06-17 2008-06-17 Boîtier comprenant des diodes électroluminescentes
CN2008801298665A CN102065679A (zh) 2008-06-17 2008-06-17 基于led的容纳体

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/057615 WO2009152848A1 (fr) 2008-06-17 2008-06-17 Boîtier comprenant des diodes électroluminescentes

Publications (1)

Publication Number Publication Date
WO2009152848A1 true WO2009152848A1 (fr) 2009-12-23

Family

ID=40464687

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/057615 WO2009152848A1 (fr) 2008-06-17 2008-06-17 Boîtier comprenant des diodes électroluminescentes

Country Status (3)

Country Link
EP (1) EP2299800A1 (fr)
CN (1) CN102065679A (fr)
WO (1) WO2009152848A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2710883A1 (fr) * 2012-09-24 2014-03-26 Heliospectra AB Optimisation de spectre pour éclairage artificiel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0900971A1 (fr) * 1997-09-09 1999-03-10 Glasbau Hahn GmbH & Co. KG Dispositif d'éclairage avec diodes électroluminescentes montées sur une plaque en verre
WO2007045786A1 (fr) * 2005-10-21 2007-04-26 Saint-Gobain Glass France Structure lumineuse comportant au moins une diode electroluminescente, sa fabrication et ses applications
EP1834760A1 (fr) * 2006-03-14 2007-09-19 Glaverbel Produit en verre

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0900971A1 (fr) * 1997-09-09 1999-03-10 Glasbau Hahn GmbH & Co. KG Dispositif d'éclairage avec diodes électroluminescentes montées sur une plaque en verre
WO2007045786A1 (fr) * 2005-10-21 2007-04-26 Saint-Gobain Glass France Structure lumineuse comportant au moins une diode electroluminescente, sa fabrication et ses applications
EP1834760A1 (fr) * 2006-03-14 2007-09-19 Glaverbel Produit en verre

Also Published As

Publication number Publication date
CN102065679A (zh) 2011-05-18
EP2299800A1 (fr) 2011-03-30

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