FR3087613A1 - TWO-CHANNEL LIGHT-EMITTING LED DIODE USING A ASSEMBLY OF TWO LIGHT-EMITTING DIODES FOR REGULATING HUMAN CIRCADIAN RHYTHM - Google Patents
TWO-CHANNEL LIGHT-EMITTING LED DIODE USING A ASSEMBLY OF TWO LIGHT-EMITTING DIODES FOR REGULATING HUMAN CIRCADIAN RHYTHM Download PDFInfo
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- 230000027288 circadian rhythm Effects 0.000 title claims abstract description 10
- 230000001105 regulatory effect Effects 0.000 title abstract description 5
- 238000001228 spectrum Methods 0.000 claims description 7
- 238000009877 rendering Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims 3
- YJPIGAIKUZMOQA-UHFFFAOYSA-N Melatonin Natural products COC1=CC=C2N(C(C)=O)C=C(CCN)C2=C1 YJPIGAIKUZMOQA-UHFFFAOYSA-N 0.000 abstract description 5
- 230000008632 circadian clock Effects 0.000 abstract description 5
- DRLFMBDRBRZALE-UHFFFAOYSA-N melatonin Chemical compound COC1=CC=C2NC=C(CCNC(C)=O)C2=C1 DRLFMBDRBRZALE-UHFFFAOYSA-N 0.000 abstract description 5
- 229960003987 melatonin Drugs 0.000 abstract description 5
- 230000028327 secretion Effects 0.000 abstract description 5
- 230000033764 rhythmic process Effects 0.000 description 4
- 208000003098 Ganglion Cysts Diseases 0.000 description 3
- 102100025912 Melanopsin Human genes 0.000 description 3
- 208000005400 Synovial Cyst Diseases 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 108010005417 melanopsin Proteins 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 241000282412 Homo Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002060 circadian Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000258 photobiological effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000002618 waking effect Effects 0.000 description 1
- 230000036642 wellbeing Effects 0.000 description 1
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- 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
- F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
- F21S8/026—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M21/00—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/06—Radiation therapy using light
- A61N5/0613—Apparatus adapted for a specific treatment
- A61N5/0618—Psychological treatment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M21/00—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
- A61M2021/0005—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis by the use of a particular sense, or stimulus
- A61M2021/0044—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis by the use of a particular sense, or stimulus by the sight sense
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- 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
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/40—Lighting for industrial, commercial, recreational or military use
- F21W2131/402—Lighting for industrial, commercial, recreational or military use for working places
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- 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
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
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- 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
- F21Y2105/00—Planar light sources
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- 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
- F21Y2113/00—Combination of light sources
- F21Y2113/10—Combination of light sources of different colours
- F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
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- 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]
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
- H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Illuminated Signs And Luminous Advertising (AREA)
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Abstract
L’invention consiste en une dalle à diodes électroluminescentes à deux canaux permettant la régulation de l’horloge circadienne humaine. En choisissant des diodes électroluminescentes bleues avec phosphores rouges, ou bien des diodes électroluminescentes bleues avec phosphores multiples, le rythme circadien humain peut être optimisé tout au long de la journée. La pondération des deux canaux au cours de la journée permet d’augmenter l’efficacité de la lumière sur la sécrétion de mélatonine.The invention consists of a two-channel light emitting diode panel for regulating the human circadian clock. By choosing blue light-emitting diodes with red phosphors, or blue light-emitting diodes with multiple phosphors, the human circadian rhythm can be optimized throughout the day. Weighting the two channels during the day increases the efficiency of light on melatonin secretion.
Description
DescriptionDescription
Titre de l'invention : Dalle à diodes électroluminescentes à deux canaux utilisant un assemblage de deux diodes électroluminescentes permettant de réguler le rythme circadien humain [0001] La présente invention concerne une dalle à diodes électroluminescentes conçue de façon à permettre le contrôle des rythmes circadiens humains par la lumière, et particulièrement la sécrétion de mélatonine au cours de la journée, tout en conservant une bonne efficacité énergétique.Title of the invention: Two-channel light-emitting diode panel using an assembly of two light-emitting diodes for regulating the human circadian rhythm The present invention relates to a light-emitting diode panel designed to allow the control of human circadian rhythms by light, and particularly the secretion of melatonin during the day, while maintaining good energy efficiency.
[0002] Description de l'art antérieur [0003] Depuis 1950, de nombreuses recherches se sont attelées à démontrer que les êtres vivants possèdent une horloge circadienne. De nombreuses études ont été entreprises de manière à mieux comprendre les facteurs influençant le règlement de cette horloge circadienne chez les animaux comme chez l’Homme. Depuis, il a été montré que le synchroniseur principal de l’horloge circadienne humaine est la lumière, et plus particulièrement la lumière bleue située entre 464 nanomètres et 484 nanomètres, les résultats variant selon les études. Aujourd’hui, la chronobiologie s’intéresse à la génétique et aux niveaux moléculaires, mais également aux impacts des rythmes biologiques sur la vie quotidienne.Description of the Prior Art [0003] Since 1950, a great deal of research has been done to demonstrate that living beings have a circadian clock. Many studies have been undertaken in order to better understand the factors influencing the regulation of this circadian clock in animals as in humans. Since then, it has been shown that the main synchronizer of the human circadian clock is light, and more particularly blue light located between 464 nanometers and 484 nanometers, the results varying according to the studies. Today, chronobiology is concerned with genetics and molecular levels, but also with the impacts of biological rhythms on daily life.
[0004] En s’inspirant des derniers travaux sur le sujet, plusieurs industriels ont développé des produits d’éclairage dont la lumière est enrichie en bleu, permettant le contrôle de l’horloge biologique par la lumière.Inspired by the latest work on the subject, several manufacturers have developed lighting products whose light is enriched in blue, allowing the control of the biological clock by light.
[0005] Les inventeurs ont étudié le spectre émis par ces produits d’éclairage afin de mettre en évidence un lien entre lumière enrichie en bleu et lumière naturelle. Le résultat de ces études est que :The inventors studied the spectrum emitted by these lighting products in order to highlight a link between light enriched in blue and natural light. The result of these studies is that:
[0006] - La lumière émise par les diodes électroluminescentes bleues active l’horloge biologique de façon très puissante.- The light emitted by the blue light-emitting diodes activates the biological clock in a very powerful way.
[0007] - Les éclairages circadiens mis sur le marché de l’éclairage professionnel ont pour effet une manipulation de l’horloge biologique qui augmente la productivité et l’attention, sans pour autant respecter un rythme naturel.- Circadian lights placed on the professional lighting market have the effect of manipulating the biological clock which increases productivity and attention, without however respecting a natural rhythm.
[0008] Plusieurs sociétés ont proposé des produits destinés à un usage personnel, à utiliser au coucher et au réveil. Cette solution est satisfaisante pour un univers personnel mais non pour un milieu professionnel et une utilisation en continu durant la journée.Several companies have offered products for personal use, to use at bedtime and on waking. This solution is satisfactory for a personal universe but not for a professional environment and continuous use during the day.
[0009] La présente demande vise à remédier à tout ou partie des inconvénients de l’art antérieur en proposant un éclairage permettant de réguler l’horloge biologique de façon naturelle utilisable en continu durant la journée dans un univers professionnel.The present application aims to remedy all or part of the drawbacks of the prior art by providing lighting for regulating the biological clock in a natural way usable continuously during the day in a professional world.
[0010] A cet effet, l’invention a pour objet une dalle lumineuse à diodes électrolumi nescentes comprenant un assemblage de deux types de diodes électroluminescentes bleues associées à un phosphore rouge ou des phosphores multiples.To this end, the invention relates to a light panel with light emitting diodes comprising an assembly of two types of blue light emitting diodes associated with a red phosphor or multiple phosphors.
Brève description des dessins [0011] [fig.l] est un schéma en coupe de la dalle à diodes électroluminescentes selon l’invention.Brief description of the drawings [fig.l] is a sectional diagram of the light-emitting diode panel according to the invention.
[0012] [fig.2] est un schéma de l’assemblage de diodes électroluminescentes selon l’invention, qui sera inséré dans la dalle à diodes électroluminescentes. Les deux types de diodes électroluminescentes sont nommés DC et DL et numérotés. Les éléments résistifs sont représentés en noir.[Fig.2] is a diagram of the assembly of light emitting diodes according to the invention, which will be inserted into the light emitting diode panel. The two types of light emitting diodes are named DC and DL and numbered. The resistive elements are shown in black.
[0013] [fig.3] est une courbe représentant un exemple de spectres extremum atteints par l’assemblage de diodes électroluminescentes remplissant les critères définis selon l’invention.[Fig.3] is a curve representing an example of extremum spectra achieved by the assembly of light emitting diodes fulfilling the criteria defined according to the invention.
[0014] [fig.4] est une courbe représentant un exemple de spectres extremum atteints par l’assemblage de diodes électroluminescentes ne remplissant pas les critères selon l’invention.[Fig.4] is a curve representing an example of extremum spectra reached by the assembly of light emitting diodes not fulfilling the criteria according to the invention.
[0015] [fig.5] est une courbe représentant l’alternance des deux signaux de commande concernant les deux types de diodes électroluminescentes.[Fig.5] is a curve representing the alternation of the two control signals relating to the two types of light-emitting diodes.
Description détaillée [0016] Un premier objet de l'invention est donc de suggérer une dalle à diodes électroluminescentes capable de réguler l’horloge circadienne de façon naturelle durant la journée, et plus particulièrement la sécrétion de mélatonine associée. Une étude bibliographique, à ce sujet, n'a pas permis de trouver de dispositif d’éclairage pour un éclairage de jour satisfaisant.Detailed description [0016] A first object of the invention is therefore to suggest a light-emitting diode panel capable of regulating the circadian clock naturally during the day, and more particularly the secretion of associated melatonin. A literature review on this subject did not find any lighting device for satisfactory daylighting.
[0017] Un autre objet important de l'invention réside en un dispositif d’éclairage qui a une bonne efficacité énergétique tout en ajoutant peu au coût global du luminaire.Another important object of the invention lies in a lighting device which has good energy efficiency while adding little to the overall cost of the luminaire.
[0018] Des études antérieures ont établi que les cellules ganglionnaires à mélanopsine, qui permettent le règlement de l’horloge biologique par la lumière, sont sensibles à la lumière.Previous studies have established that melanopsin ganglion cells, which allow the regulation of the biological clock by light, are sensitive to light.
[0019] En utilisant les informations contenues dans ces différentes études, les inventeurs ont conçu une dalle lumineuse à diodes électroluminescentes dont la lumière, variant au cours de la journée, permet de régler le rythme circadien humain.Using the information contained in these various studies, the inventors have designed a light panel with light-emitting diodes whose light, varying during the day, makes it possible to regulate the human circadian rhythm.
[0020] Plus précisément, la dalle lumineuse à diodes électroluminescentes selon l’invention délivre un spectre contrôlable et dont les caractéristiques spectrales sont spécifiquement choisies.More specifically, the light panel with light emitting diodes according to the invention delivers a controllable spectrum and whose spectral characteristics are specifically chosen.
[0021] La variation moyenne du spectre lumineux doit être d’au minimum 30% d’intensité relative possible sur la plage de longueurs d’onde 464 nanomètres à 484 nanomètres. En effet, la valeur de 30% a été choisie telle que la modulation permise dans cette plage permette la régulation de l’horloge biologique selon un rythme naturel, permettant d’activer les cellules ganglionnaires à mélanopsine aux heures choisies et d’obtenir la synchronisation de l’horloge biologique. Afin de protéger l’œil des risques photo biologiques, il ne faut pas d’émission de lumière en dessous de 410 nanomètres, et une émission de lumière inférieure à 20% d’intensité relative pour les longueurs d’onde inférieures ou égales à 435 nanomètres.The average variation of the light spectrum must be at least 30% of possible relative intensity over the wavelength range 464 nanometers to 484 nanometers. Indeed, the value of 30% was chosen such that the modulation allowed in this range allows the regulation of the biological clock according to a natural rhythm, making it possible to activate the melanopsin ganglion cells at the chosen times and to obtain synchronization of the biological clock. In order to protect the eye from photo biological risks, light emission below 410 nanometers should not be emitted, and light emission less than 20% relative intensity for wavelengths less than or equal to 435 nanometers.
[0022] Le niveau minimum d’intensité relative de lumière comprise entre 464 nanomètres etThe minimum level of relative light intensity between 464 nanometers and
484 nanomètres doit être inférieur à 20% de l’intensité relative totale. Ce niveau minimum d’intensité relative est obtenu en calculant la valeur moyenne de l’intensité relative sur la plage 464 nanomètres à 484 nanomètres pour toutes les valeurs de pondérations des deux diodes électroluminescentes. La valeur minimale obtenue pour la moyenne de l’intensité relative sur cette plage est alors retenue. Elle doit être inférieure à 20% de l’intensité relative totale afin de ne pas activer les cellules ganglionnaires à mélanopsine, et de pouvoir préparer le corps à la sécrétion de mélatonine, qui a lieu notamment le soir.484 nanometers must be less than 20% of the total relative intensity. This minimum level of relative intensity is obtained by calculating the average value of the relative intensity over the range 464 nanometers to 484 nanometers for all the weighting values of the two light-emitting diodes. The minimum value obtained for the average of the relative intensity over this range is then retained. It must be less than 20% of the total relative intensity in order not to activate the melanopsin ganglion cells, and to be able to prepare the body for the secretion of melatonin, which takes place especially in the evening.
[0023] Selon une réalisation particulière de l'invention, les caractéristiques spectrales peuvent être obtenues par assemblage de deux types de diodes électroluminescentes blanches, constituées d’un assemblage de diodes électroluminescentes bleues et phosphores rouges.According to a particular embodiment of the invention, the spectral characteristics can be obtained by assembling two types of white light-emitting diodes, consisting of an assembly of blue light-emitting diodes and red phosphors.
[0024] Selon une autre réalisation, les caractéristiques spectrales sont obtenues par assemblage de deux types de diodes électroluminescentes blanches, constituées d’un assemblage de diodes électroluminescentes bleues et de phosphores multiples.In another embodiment, the spectral characteristics are obtained by assembling two types of white light-emitting diodes, consisting of an assembly of blue light-emitting diodes and multiple phosphors.
[0025] Dans les deux cas, la conception de l’assemblage reste similaire, au calcul des éléments résistifs près. Se référant à la [fig.2], celle-ci illustre l’assemblage de diodes électroluminescentes permettant d’être inséré dans une dalle lumineuse. Cet assemblage de deux diodes électroluminescentes, illustré par la [Fig. 3], permet d’obtenir une régulation du rythme circadien humain naturelle car il permet de remplir les conditions citées ci-dessus.In both cases, the design of the assembly remains similar, except for the calculation of the resistive elements. Referring to [fig.2], this illustrates the assembly of light-emitting diodes allowing it to be inserted into a light panel. This assembly of two light-emitting diodes, illustrated by [Fig. 3], makes it possible to obtain a regulation of the natural human circadian rhythm because it makes it possible to fulfill the conditions mentioned above.
[0026] Lors de l’assemblage de deux diodes électroluminescentes et quelle que soit la réalisation choisie, la température de couleur (CCT) est nécessairement variable lors des variations au cours de la journée. Le luminaire selon l’invention est donc un luminaire à deux canaux.During the assembly of two light-emitting diodes and whatever the embodiment chosen, the color temperature (CCT) is necessarily variable during variations during the day. The luminaire according to the invention is therefore a two-channel luminaire.
[0027] L’indice de rendu des couleurs est maintenu au dessus de 90 peu importe la pondération des deux diodes électroluminescentes. En effet, un indice de rendu des couleurs au dessus de 90 est considéré comme excellent et permet de maintenir un rendu de l’environnement naturel, ce qui a pour conséquence d’améliorer le bien-être et le confort d’utilisation.The color rendering index is maintained above 90 regardless of the weighting of the two light-emitting diodes. Indeed, a color rendering index above 90 is considered excellent and allows to maintain a rendering of the natural environment, which has the consequence of improving well-being and comfort of use.
[0028] Se référant maintenant à la [fig. 1], celle-ci illustre un luminaire de type dalle lumineuse à diodes électroluminescentes conventionnel vu en coupe, ayant pour dimensions 60x60 centimètres ou 120x30 centimètres. Ces dimensions s’entendent au titre des dimensions usuelles des faux plafonds. La dalle lumineuse à diodes électroluminescentes est quant à elle légèrement plus petite, et sa taille peut représenter jusqu’à un centimètre de moins sur chaque dimension. La lumière est émise par l’assemblage de diodes électroluminescentes selon l’invention, positionné sur un, deux ou quatre côtés intérieurs du cadre en aluminium anodisé 1. La lumière émise par ledit assemblage de diodes électroluminescentes est ensuite guidée dans le guide de lumière 2, puis transmis à travers le diffusant 3. A l’arrière de la dalle, on positionne un réflecteur blanc 4 permettant de ne pas perdre de flux lumineux, ainsi qu’une plaque en aluminium anodisé 5 pour fermer le système.Referring now to [fig. 1], this illustrates a luminaire of the conventional light-emitting diode type slab seen in section, having dimensions 60x60 centimeters or 120x30 centimeters. These dimensions are understood as the usual dimensions of false ceilings. The light-emitting diode panel is slightly smaller, and its size can be up to a centimeter less on each dimension. Light is emitted by the assembly of light-emitting diodes according to the invention, positioned on one, two or four inner sides of the anodized aluminum frame 1. The light emitted by said assembly of light-emitting diodes is then guided in the light guide 2 , then transmitted through the diffuser 3. At the rear of the screen, a white reflector 4 is positioned so as not to lose light flux, as well as an anodized aluminum plate 5 to close the system.
[0029] L’assemblage de diodes électroluminescentes est contrôlé en intensité par un circuit électronique externe. Ce circuit électronique délivre deux signaux en modulation en largeur d’impulsion (PWM) de rapport cyclique variable. Se référant à la [fig.5], les signaux PWM sont inversés afin de maintenir un courant constant dans l’assemblage de diodes électroluminescentes. Les deux types de diodes électroluminescentes sont donc commandés en alternance, avec une fréquence supérieure à 100 Hertz afin de ne pas être perceptible par l’œil. Pour éviter le phénomène de scintillement, il est possible de lisser le courant à l’aide d’un filtre supplémentaire. Afin de moduler le rythme circadien humain au cours de la journée, le rapport cyclique de ces deux signaux de commande varie lentement durant la journée, tout en conservant l’alternance des deux diodes électroluminescentes. Ainsi, la somme des deux rapports cycliques est toujours égale à 100%, quelles que soient les pondérations des deux diodes électroluminescentes.The assembly of light emitting diodes is intensity controlled by an external electronic circuit. This electronic circuit delivers two pulse width modulation (PWM) signals with variable duty cycle. Referring to [fig.5], the PWM signals are inverted in order to maintain a constant current in the assembly of light emitting diodes. The two types of light-emitting diodes are therefore controlled alternately, with a frequency greater than 100 Hertz so as not to be perceptible to the eye. To avoid the flickering phenomenon, it is possible to smooth the current using an additional filter. In order to modulate the human circadian rhythm during the day, the duty cycle of these two control signals varies slowly during the day, while retaining the alternation of the two light-emitting diodes. Thus, the sum of the two duty cycles is always equal to 100%, whatever the weights of the two light-emitting diodes.
[0030] La sécrétion de mélatonine s’opère lorsque l’intensité relative moyenne dans la plage 464 nanomètre à 484 nanomètre est inférieure à 20% de l’intensité relative totale, en considérant un éclairement classique d’environ 500 lux sur le plan de travail. La commande sera donc adaptée de telle sorte à opérer une variation lente entre les deux diodes électroluminescentes jusqu’à atteindre ce taux au moment voulu. Les moments de la journée où nous souhaitons atteindre un niveau inférieur aux 20% sont définis selon les horaires de travail. Les périodes dites de repos, qui concernent principalement le matin, le soir et éventuellement les pauses, nécessitent un niveau d’intensité relative moyenne dans la plage 484 nanomètre à 464 nanomètre inférieure à 20%, tandis qu’au contraire les périodes dites d’activité, qui concernent principalement les périodes de travail, nécessitent un niveau d’intensité relative moyenne dans la plage 484 nanomètre à 464 nanomètre supérieur à 20%, avec une variation d’au minimum 30% par rapport au niveau minimal. Le changement d’éclairage vers une lumière pauvre en bleu s’effectue au minimum 30 minutes avant la période désignée comme période de repos.The secretion of melatonin occurs when the average relative intensity in the range 464 nanometer to 484 nanometer is less than 20% of the total relative intensity, considering a conventional illumination of about 500 lux in terms of job. The control will therefore be adapted so as to operate a slow variation between the two light-emitting diodes until reaching this rate at the desired time. The times of the day when we want to reach a level below 20% are defined according to work schedules. The so-called rest periods, which mainly concern the morning, evening and possibly breaks, require a level of average relative intensity in the range 484 nanometer to 464 nanometer less than 20%, while on the contrary the so-called periods of activities, which mainly concern work periods, require an average relative intensity level in the range 484 nanometer to 464 nanometer greater than 20%, with a variation of at least 30% compared to the minimum level. The change of lighting to a poor blue light takes place at least 30 minutes before the period designated as the rest period.
De même, le changement d’éclairage vers une lumière enrichie en bleu s’effectue au minimum 30 minutes avant la période dite d’activité. La modulation au cours de la journée étant lente, l’utilisateur ne remarque pas les changements de température de couleur qui s’opèrent de façon similaire à la lumière naturelle.Similarly, the change of lighting to a light enriched in blue is carried out at least 30 minutes before the so-called activity period. As modulation during the day is slow, the user does not notice the changes in color temperature that occur similarly to natural light.
[0031] La combinaison de deux types de diodes électroluminescentes à l’intérieur du luminaire augmente la puissance totale du luminaire, et donc la chaleur qui s’en dégage. Afin de maintenir le dispositif à une température convenable, les assemblages de diodes électroluminescentes sont fixés au cadre en aluminium anodisé grâce à un ruban thermique permettant la transmission de chaleur pour dissipation dans l’ensemble du cadre.The combination of two types of light emitting diodes inside the luminaire increases the total power of the luminaire, and therefore the heat which is emitted. In order to maintain the device at a suitable temperature, the light-emitting diode assemblies are fixed to the anodized aluminum frame by means of a thermal tape allowing the transmission of heat for dissipation throughout the frame.
[0032] Il s'ensuit de ce qui précède que la dalle à diodes électroluminescentes, selon l'invention, est conçue pour permettre la régulation du rythme circadien humain par la lumière durant la journée.It follows from the above that the light-emitting diode panel, according to the invention, is designed to allow the regulation of the human circadian rhythm by light during the day.
[0033] Exemple d’utilisation [0034] La dalle à diodes électroluminescentes est conçue pour une installation dans les faux plafonds, au même titre qu’une dalle lumineuse à diodes électroluminescentes classique. L’utilisation de l’assemblage de diodes électroluminescentes selon l’invention permet une variation du rythme biologique tout au long de la journée, ainsi que de la température de couleur (CCT). Le luminaire selon l’invention s’adapte donc tout particulièrement à un univers professionnel dans lequel les salariés passent plusieurs heures consécutives enfermés, loin de la lumière naturelle.Example of use [0034] The light emitting diode panel is designed for installation in false ceilings, in the same way as a conventional light emitting diode panel. The use of the assembly of light-emitting diodes according to the invention allows a variation in the biological rhythm throughout the day, as well as in the color temperature (CCT). The luminaire according to the invention therefore adapts very particularly to a professional universe in which employees spend several consecutive hours locked away from natural light.
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| FR1871196A FR3087613B1 (en) | 2018-10-17 | 2018-10-17 | DUAL CHANNEL LED SLAB USING A TWO LIGHT EMITTING DIODE ASSEMBLY TO REGULATE THE HUMAN CIRCADIAN RHYTHM |
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|---|---|---|---|---|
| US20080231214A1 (en) * | 2007-03-19 | 2008-09-25 | Seoul Semiconductor Co., Ltd. | Light emitting device having various color temperature |
| US20110299277A1 (en) * | 2010-06-07 | 2011-12-08 | Sanken Electric Co., Ltd. | Illuminating apparatus and method of controlling illuminating apparatus |
| JP2012064860A (en) * | 2010-09-17 | 2012-03-29 | Mitsubishi Chemicals Corp | Led light-emitting device and lighting apparatus incorporating the same |
| US20130141013A1 (en) * | 2010-09-09 | 2013-06-06 | Mitsubishi Chemical Corporation | Light emission apparatus, illumination system and illumination method |
| DE102014115626A1 (en) * | 2013-10-28 | 2015-04-30 | Panasonic Intellectual Property Management Co., Ltd. | Light source module and lighting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080231214A1 (en) * | 2007-03-19 | 2008-09-25 | Seoul Semiconductor Co., Ltd. | Light emitting device having various color temperature |
| US20110299277A1 (en) * | 2010-06-07 | 2011-12-08 | Sanken Electric Co., Ltd. | Illuminating apparatus and method of controlling illuminating apparatus |
| US20130141013A1 (en) * | 2010-09-09 | 2013-06-06 | Mitsubishi Chemical Corporation | Light emission apparatus, illumination system and illumination method |
| JP2012064860A (en) * | 2010-09-17 | 2012-03-29 | Mitsubishi Chemicals Corp | Led light-emitting device and lighting apparatus incorporating the same |
| DE102014115626A1 (en) * | 2013-10-28 | 2015-04-30 | Panasonic Intellectual Property Management Co., Ltd. | Light source module and lighting device |
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