[go: up one dir, main page]

WO2022049048A1 - Dispositif électroluminescent pour désinfection d'objets - Google Patents

Dispositif électroluminescent pour désinfection d'objets Download PDF

Info

Publication number
WO2022049048A1
WO2022049048A1 PCT/EP2021/073949 EP2021073949W WO2022049048A1 WO 2022049048 A1 WO2022049048 A1 WO 2022049048A1 EP 2021073949 W EP2021073949 W EP 2021073949W WO 2022049048 A1 WO2022049048 A1 WO 2022049048A1
Authority
WO
WIPO (PCT)
Prior art keywords
emitting device
light
region
light emitting
light source
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/EP2021/073949
Other languages
English (en)
Inventor
Ties Van Bommel
Robert Jacob PET
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.)
Signify Holding BV
Original Assignee
Signify Holding BV
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 Signify Holding BV filed Critical Signify Holding BV
Publication of WO2022049048A1 publication Critical patent/WO2022049048A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08—Radiation
    • A61L2/10—Ultraviolet radiation
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
    • A23B2/00—Preservation of foods or foodstuffs, in general
    • A23B2/50—Preservation of foods or foodstuffs, in general by irradiation without heating
    • A23B2/53—Preservation of foods or foodstuffs, in general by irradiation without heating with ultraviolet light
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
    • A61L9/18—Radiation
    • A61L9/20—Ultraviolet radiation
    • A61L9/205—Ultraviolet radiation using a photocatalyst or photosensitiser

Definitions

  • the invention relates to a light emitting device adapted for disinfection of objects, the light emitting device comprising at least one light source adapted for, in operation, emitting ultraviolet (UV) light, and a reflector.
  • UV light is light in the wavelength range from 100 nm to 380 nm.
  • Light emitting devices with UV light sources are known for various purposes.
  • US 2017/108195 Al attempts at increasing the quality of a light emitting device with LED light sources and discloses a light emitting device which includes a first body including a first inner circumferential surface and a first outer circumferential surface, a cover disposed on and fastened to the first body and including an open bottom surface, an optical member disposed between the first body and the cover and exposed at the open bottom surface of the cover, and a light source member including a circuit board disposed between the cover and the optical member along an edge of the cover and at least two light sources mounted on the circuit board to face each other.
  • the light source may emit ultraviolet (UV) light.
  • UV-light generally comprises UV-A, UV-B and UV-C light.
  • UV-C light sources are important candidates for disinfection applications.
  • UV light with wavelengths of 200 - 220 nm is interesting because this wavelength range is regarded as safe with respect to damage to eyes and skin of humans.
  • a light emitting device adapted for disinfection of objects
  • the light emitting device comprising at least one light source adapted for, in operation, emitting ultraviolet, UV, light, and a reflector, the reflector comprising an inner surface, the inner surface being reflective, and the inner surface comprising at least one first region and at least one second region, where the at least one first region comprises a specular reflective surface, and the at least one second region comprises a diffuse reflective surface, and where the at least one light source is at least partly arranged within said reflector.
  • the inner surface of the reflector comprises at least one first region and at least one second region, where the at least one first region comprises a specular reflective surface, and the at least one second region comprises a diffuse reflective surface
  • a light emitting device with an improved directional control and an improved intensity of the emitted light is provided for.
  • a light emitting device for disinfecting objects with improved safety and improved performance is provided for.
  • the specular reflective surface is made from a metal.
  • the metal may be or comprise aluminum, silver or combinations thereof.
  • the reflector may be made of folded metal.
  • the metal may also be applied by means of CVD or PVD on another surface or carrier such as a polymer or a metal layer.
  • the light emitting device is provided with a reflector which provides excellent beam shaping properties.
  • a reflector which provides excellent beam shaping properties.
  • the diffuse reflective surface of the at least one second region comprises a photocatalytic layer.
  • a photocatalytic layer provides for a light emitting device enabling especially efficient air purification, especially when used in combination with a light source emitting UV-C light.
  • the photocatalytic layer comprises any one or more of TiCh and MgO.
  • the photocatalytic layer may be applied as a particle coating.
  • a photocatalytic layer comprising MgO is advantageous for obtaining a low absorption of UV-C light, especially in the wavelength range of ⁇ 350 nm, in the layer. Also, if the light source emits light with a wavelength of ⁇ 220 nm, then both UO2 and MgO has the advantage of enabling catalyzation of decomposition of ozone (O3). This in turn provides for a more efficient disinfection.
  • the light source is adapted for, in operation, emitting UV-C light.
  • UV-C light is known to be damaging for microorganisms and virus. UV-C light is found within the wavelength range of 100 to 280 nm. Germicidal action of UV-C light is known to be maximized at a wavelength of about 265 nm with reductions on either side. Using a light source emitting UV-C light therefore provides for a light emitting device being useful and efficient for disinfecting objects, such as food, air and water.
  • the UV-C light is UV-C light in the wavelength range of less than or equal to 350 nm, such as in the range from 100 nm to 350 nm.
  • Short-wavelength UV-C light is known to be especially efficient to kill or inactivate microorganisms by destroying nucleic acids and disrupting their DNA, leaving them unable to perform vital cellular functions.
  • Using a light source emitting UV-C light in the wavelength range of less than or equal to 350 nm therefore provides for a light emitting device being particularly useful and efficient for disinfecting objects, such as food, air and water.
  • the UV-C light is UV-C light in the wavelength range of less than or equal to 220 nm, or in the range from 190 nm to 220 nm, or from 190 nm to 230 nm, or from 200 nm to 230 nm, or from 215 nm to 225 nm.
  • UV-C light of a wavelength range of below 230 nm, and particularly below 220 nm is regarded as safe with respect to damage to eyes and skin of humans.
  • Using a light source emitting UV-C light of such a wavelength therefore provides for a light emitting device which is further safe for disinfection of human skin surfaces, such as hands and arms and even faces.
  • the at least one second region is provided closer to the at least one light source than the at least one first region.
  • This provides for a light emitting device enabling a further improved ozone decomposition.
  • the at least one first region is provided closer to the at least one light source than the at least one second region.
  • the inner surface of the reflector comprises a plurality of first regions and/or a plurality of second regions.
  • the plurality of first and/or second regions may be provided as rings arranged around the optical axis, lanes arranged along the optical axis, in a checkerboard configuration and alternatingly along a length of the reflector.
  • a checkerboard configuration has the further advantage of providing an improved spatial light distribution.
  • the rings and/or lanes and/or checkerboard configuration are matching with a facetted surface of the reflector, such as to be less obtrusive with respect to the different sections.
  • the plurality may of first and second regions may comprise at least three first regions and at least three second regions.
  • the first region comprises a first surface area, Al
  • the second region comprises a second surface area, A2, where 0.25 ⁇ A1/A2 ⁇ 4.
  • the reflector is made of aluminum, and the photocatalytic layer is coated on top of the reflector.
  • the photocatalytic layer may for example be coated on top of the reflector at a part of the reflective surface of the reflector being the second region or only in the second region.
  • the at least one light source is an excimer lamp.
  • This provides for a light emitting device with a light source emitting UV-light which light source is particularly efficient and energy saving, and which light source may emit UV light with a high intensity.
  • the at least one light source is an LED or an LED package.
  • This provides for a light emitting device with a light source emitting UV-light which light source is particularly energy efficient, and which light source is also cheap and durable.
  • the reflector is elongated.
  • the first region comprising the specular reflective surface comprises a parabolic shape.
  • the light source may be arranged in the focal point of the reflector.
  • This provides for a light emitting device with which the direction of the light emitted from the reflector becomes easily controllable, thus providing for a light emitting device which has an improved reliability and performance.
  • the second region comprising the diffuse reflective surface comprises a shape different from parabolic.
  • This provides for a light emitting device with which the intensity of the light emitted from the reflector becomes even over the whole light emission surface.
  • a light emitting device has an improved reliability and performance.
  • the invention further concerns a luminaire comprising a light emitting device according to the invention and a light source adapted for, in operation, emitting visible light, such as for instance white light.
  • the light source adapted for, in operation, emitting visible light may be arranged in the focal point of the reflector.
  • the light source adapted for, in operation, emitting UV light and the light source adapted for, in operation, emitting visible light may be shaped as a single light source, such as e.g. a lamp such as a TL tube or a LED TL tube.
  • the light source adapted for, in operation, emitting visible light may alternatively be a light source separate from the light source adapted for, in operation, emitting UV light, e.g. arranged next to the light source adapted for, in operation, emitting UV light.
  • the light source adapted for, in operation, emitting visible light may for instance be provided as white LEDs, as phosphor converted UV LEDs and/or blue LEDs or as RGB LEDs.
  • the invention further concerns a device adapted for disinfecting objects and comprising a light emitting device according to the invention.
  • FIG. 1 shows a schematic cross-sectional side view of a light emitting device according to a first embodiment of the invention.
  • Fig. 2 shows a schematic cross-sectional side view of a light emitting device according to a second embodiment of the invention.
  • Fig. 3 shows a schematic cross-sectional side view of a light emitting device according to a third embodiment of the invention.
  • Fig. 4 shows a schematic cross-sectional side view of a light emitting device according to a fourth embodiment of the invention.
  • Fig. 5 shows a schematic cross-sectional side view of a light emitting device according to a fifth embodiment of the invention.
  • Fig. 1 shows a light emitting device 1 according to a first embodiment of the invention in a schematic cross-sectional side view.
  • the light emitting device 1 is adapted for disinfection of objects, particularly surfaces of objects, such as door handles and knobs, and surfaces or parts of the human body, such as hands, arms and faces.
  • the light emitting device 1 generally and irrespective of the embodiment comprises a light source 3 and a reflector 2.
  • the reflector 2 comprises an inner surface 21, and the inner surface 21 comprises a first region 4 and a second region 5.
  • the reflector 2 generally comprises an inner surface 21.
  • the inner surface 21 of the reflector 2 is reflective.
  • the reflector 2 may be an elongated element.
  • the reflector may comprise a bottom part 22 and a circumferential side wall 23.
  • the inner surface 21 may be a surface of both the bottom part 22 and the circumferential wall 23.
  • the reflector 2 further comprises a length L and a width W.
  • the reflector 2 may be shaped such that the width W, or the distance between mutually opposite points on the circumferential wall 23, increases from the bottom 22 towards an open end 24 opposite to the bottom part 22.
  • the bottom part 22 may be planar or it may be non-planar, such as curved.
  • the light source 3 is adapted for emitting ultraviolet, UV, light.
  • the light source 3 may be adapted for emitting UV-C light, such as UV-C light in the wavelength range of less than or equal to 350 nm, or UV-C light in the wavelength range of less than or equal to 220 nm.
  • the light source 3 may alternatively or additionally be adapted for emitting other types or wavelengths of UV light.
  • the light source 3 may be an LED or an LED package.
  • the light source 3 may also be an excimer lamp.
  • the light source 3 may also be a low-pressure vapor discharge lamp or a compact low-pressure vapor discharge lamp.
  • the light source 3 may be arranged in the focal point of the reflector 2.
  • the first region 4 comprises a specular reflective surface 6.
  • the specular reflective surface 6 may be made from a suitable metal, such as especially aluminum.
  • the specular reflective surface 6 may also be provided as a coating or a foil.
  • the specular reflective surface 6 may comprise a parabolic shape.
  • the second region 5 comprises a diffuse reflective surface 7.
  • one second region 5 is provided for. In other embodiments more than one second region 5 may be provided for.
  • the diffuse reflective surface 7 may comprise a shape different from parabolic.
  • the second region 5 is provided closer to the light source 3 than the first region 4.
  • the second region 5 is provided on a part of the inner surface 21 corresponding to the bottom part 22 and/or a part of the circumferential wall 23 adjacent to the bottom part 22, while the first region 4 is provided on a part of the inner surface 21 corresponding to a part of the circumferential wall 23 adjacent to the open end 24.
  • Fig. 2 shows a light emitting device 100 according to a second embodiment of the invention in a schematic cross-sectional side view.
  • the light emitting device 100 differs from that described above in relation to Fig. 1 in that the first region 4 is provided closer to the light source 3 than the second region 5.
  • the first region 4 is provided on a part of the inner surface 21 corresponding to the bottom part 22 and/or a part of the circumferential wall 23 adjacent to the bottom part 22, while the second region 5 is provided on a part of the inner surface 21 corresponding to a part of the circumferential wall 23 adjacent to the open end 24.
  • Fig. 3 shows a light emitting device 101 according to a third embodiment of the invention in a schematic cross-sectional side view.
  • the light emitting device 101 differs from those described above in relation to Figs. 1 and 2 in virtue of the following features.
  • the diffuse reflective surface 7 comprises a photocatalytic layer 71.
  • the photocatalytic layer 71 may by way of example comprise TiCh and/or MgO.
  • the reflector 2 is made of aluminum, and the photocatalytic layer 71 is coated on top of the reflector 2.
  • Fig. 4 shows a light emitting device 102 according to a fourth embodiment of the invention in a schematic cross-sectional side view.
  • the light emitting device 102 differs from those described above in relation to Figs. 1 to 3 in virtue of the following features.
  • the diffuse reflective surface 7 of the second region 6 is provided as a coating 72.
  • the diffuse reflective surface 7 of the second region 6 may also be provided as a foil.
  • the first region 4 comprises a first surface area, Al
  • the second region 5 comprises a second surface area, A2.
  • the surface areas Al and A2 are chosen to fulfill the relation 0.25 ⁇ A1/A2 ⁇ 4.
  • Fig. 5 shows a light emitting device 103 according to a third embodiment of the invention in a schematic cross-sectional side view.
  • the light emitting device 103 differs from those described above in relation to Figs. 1 and 2 in virtue of the following features.
  • a plurality of first regions 41, 42, 43 and a plurality of second regions 51, 52, 53 are provided for.
  • three first regions 41, 42, 43 and three second regions 51, 52, 53 are provided for. That is, the number of first regions 4 and the number of second regions 5 are the same. In other embodiments another number of first regions 4 and second regions 5 may be provided for, such as two or four or more than four first regions 4 and second regions 5, respectively. In still other embodiments the number of first regions 4 and the number of second regions 5 may be different from one another. By way of non-limiting example, three first regions 4 and two second regions 5, or two first regions 4 and four second regions 5 may be provided for.
  • the plurality of first regions 41, 42, 43 and the plurality of second regions 51, 52, 53 may be provided as rings arranged around the optical axis (cf. Fig. 5 where the optical axis is parallel with a length L of the reflector 2 and extends through the center of the bottom 22 of the reflector 2).
  • plurality of first regions 41, 42, 43 and the plurality of second regions 51, 52, 53 may be provided as lanes arranged along the optical axis, or in a checkerboard configuration, or altematingly along the length L of the reflector.
  • rings and/or lanes and/or checkerboard configuration may be matching with a facetted surface of the reflector 2.
  • a plurality of light sources 3 are provided for.
  • two light sources 31, 32 are provided for. In other embodiments more than two light sources 3 may be provided for.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Zoology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polymers & Plastics (AREA)
  • Food Science & Technology (AREA)
  • Wood Science & Technology (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

L'invention concerne un dispositif d'émission de lumière (1) adapté pour la désinfection d'objets, le dispositif d'émission de lumière (1) comprenant au moins une source de lumière (3) adaptée pour, lors du fonctionnement, émettre une lumière ultraviolette, UV, et un réflecteur (2), le réflecteur (2) comprenant une surface interne (21), la surface interne (21) étant réfléchissante, et la surface interne (21) comprenant au moins une première région (4) et au moins une seconde région (5), ladite au moins une première région (4) comprenant une surface réfléchissante spéculaire (6), et ladite au moins une seconde région (5) comprenant une surface réfléchissante diffuse (7), et ladite au moins une source de lumière (3) est au moins partiellement disposée à l'intérieur dudit réflecteur (2).
PCT/EP2021/073949 2020-09-03 2021-08-31 Dispositif électroluminescent pour désinfection d'objets Ceased WO2022049048A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20194261.2 2020-09-03
EP20194261 2020-09-03

Publications (1)

Publication Number Publication Date
WO2022049048A1 true WO2022049048A1 (fr) 2022-03-10

Family

ID=72355841

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/073949 Ceased WO2022049048A1 (fr) 2020-09-03 2021-08-31 Dispositif électroluminescent pour désinfection d'objets

Country Status (1)

Country Link
WO (1) WO2022049048A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1014006A2 (fr) * 1998-12-22 2000-06-28 Carrier Corporation Purificateur d'air électronique avec lampe germicide
JP2005122955A (ja) * 2003-10-15 2005-05-12 Seiko Epson Corp 光源装置、光源、およびこれらの光源装置または光源を備えたプロジェクタ
WO2012059746A2 (fr) * 2010-11-03 2012-05-10 Albagaia Limited Dispositif de traitement de fluide
US20120168300A1 (en) * 2009-09-15 2012-07-05 Grigorios Kolios Photoreactor
DE102015108773A1 (de) * 2014-06-03 2015-12-03 Sensor Electronic Technology, Inc. Ultraviolett-transparente Umhüllung
US20170108195A1 (en) 2015-10-19 2017-04-20 Lg Innotek Co., Ltd. Lighting apparatus
US20170290943A1 (en) * 2008-12-19 2017-10-12 Edward Brittain Stokes Systems and methods for performing the bacterial disinfection of a fluid using point radiation sources
WO2018150425A1 (fr) * 2017-02-15 2018-08-23 Ramot At Tel-Aviv University Ltd. Procédé et dispositif de désinfection de l'eau

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1014006A2 (fr) * 1998-12-22 2000-06-28 Carrier Corporation Purificateur d'air électronique avec lampe germicide
JP2005122955A (ja) * 2003-10-15 2005-05-12 Seiko Epson Corp 光源装置、光源、およびこれらの光源装置または光源を備えたプロジェクタ
US20170290943A1 (en) * 2008-12-19 2017-10-12 Edward Brittain Stokes Systems and methods for performing the bacterial disinfection of a fluid using point radiation sources
US20120168300A1 (en) * 2009-09-15 2012-07-05 Grigorios Kolios Photoreactor
WO2012059746A2 (fr) * 2010-11-03 2012-05-10 Albagaia Limited Dispositif de traitement de fluide
DE102015108773A1 (de) * 2014-06-03 2015-12-03 Sensor Electronic Technology, Inc. Ultraviolett-transparente Umhüllung
US20170108195A1 (en) 2015-10-19 2017-04-20 Lg Innotek Co., Ltd. Lighting apparatus
WO2018150425A1 (fr) * 2017-02-15 2018-08-23 Ramot At Tel-Aviv University Ltd. Procédé et dispositif de désinfection de l'eau

Similar Documents

Publication Publication Date Title
JP6396609B2 (ja) Ｕｖ光の一部を放出する照明アセンブリ
JP6224492B2 (ja) 光照射装置
US20230293745A1 (en) Inactivation device for bacteria and/or viruses
KR20200057399A (ko) 조명장치
KR102585542B1 (ko) 광 조사 장치
WO2022049048A1 (fr) Dispositif électroluminescent pour désinfection d'objets
JP7071144B2 (ja) 紫外線殺菌装置および紫外線照射装置
CN117136633A (zh) 包括不同类型led的用于消毒的led阵列
CN116762025A (zh) 用于照明和消毒照明的照明装置
WO2022157193A1 (fr) Dispositif d'éclairage de désinfection adaptatif à sécurité améliorée
JP2019098291A (ja) 流体殺菌装置
US20250073361A1 (en) A radiation generating system comprising an optical arrangement for a far uv light source minimizing the impact of unfiltered undesired wavelengths
WO2023161108A1 (fr) Source lumineuse hybride uv-blanche
WO2017194932A1 (fr) Améliorations relatives à des lampes infrarouges et/ou ultraviolettes
WO2022148746A1 (fr) Dispositif électroluminescent
US12130007B2 (en) Dual-reflector lighting device
JP2007130029A (ja) 光抗菌トイレ装置
KR102784499B1 (ko) 자외선 조사 장치
WO2024028211A1 (fr) Lampe ayant différents filaments led uv émettant différentes lumières uv agencés de manière asymétrique dans ladite lampe
EP4376900B1 (fr) Dispositif d'éclairage de désinfection
WO2024195231A1 (fr) Appareil d'irradiation de lumière ultraviolette
JP2011024504A (ja) 植物用紫外光照射装置
WO2022194827A1 (fr) Dispositif électroluminescent avec sources de lumière visible et ultraviolette
CN113995861A (zh) 紫外线消毒灯
WO2023151983A1 (fr) Réseau de del pour désinfection comprenant différents types de del

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21769726

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21769726

Country of ref document: EP

Kind code of ref document: A1