WO2006123283A2 - Daylight shielding device - Google Patents

Daylight shielding device Download PDF

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Publication number
WO2006123283A2
WO2006123283A2 PCT/IB2006/051511 IB2006051511W WO2006123283A2 WO 2006123283 A2 WO2006123283 A2 WO 2006123283A2 IB 2006051511 W IB2006051511 W IB 2006051511W WO 2006123283 A2 WO2006123283 A2 WO 2006123283A2
Authority
WO
WIPO (PCT)
Prior art keywords
light
slats
shielding device
daylight
guiding layer
Prior art date
Application number
PCT/IB2006/051511
Other languages
French (fr)
Other versions
WO2006123283A3 (en
Inventor
Elvira J. M. Paulussen
Maurice A. H. Donners
Theodorus G. M. M. Kappen
Martien J. Van Der Meij
Paulus Q. J. Nederpel
Original Assignee
Koninklijke Philips Electronics N.V.
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 Koninklijke Philips Electronics N.V. filed Critical Koninklijke Philips Electronics N.V.
Priority to EP06765679A priority Critical patent/EP1886065A2/en
Priority to CN2006800169672A priority patent/CN101175947B/en
Priority to JP2008511838A priority patent/JP5315046B2/en
Priority to US11/914,244 priority patent/US20080271856A1/en
Publication of WO2006123283A2 publication Critical patent/WO2006123283A2/en
Publication of WO2006123283A3 publication Critical patent/WO2006123283A3/en

Links

Classifications

    • 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
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/38—Other details
    • E06B9/386—Details of lamellae
    • 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/02—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using parallel laminae or strips, e.g. of Venetian-blind type
    • F21V11/04—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using parallel laminae or strips, e.g. of Venetian-blind type adjustable
    • 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
    • F21V33/0024—Household or table equipment
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B2009/247—Electrically powered illumination
    • 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]

Definitions

  • the invention relates to a daylight shielding device comprising a plurality of slats for shielding daylight from a room, a housing for attachment to a window sill or the like, and controls for controlling the position and orientation of the slats, and an illumination device for illuminating said slats.
  • DE10131598 discloses a daylight shielding device comprising organic light- emitting diodes (OLED) attached to the slats.
  • OLEDs organic light- emitting diodes
  • the invention provides a daylight shielding device wherein said illumination performance is enhanced. Accordingly, the invention provides a daylight shielding device wherein said illumination device and said slats are configured so as to reflect light from said illumination device via said slats into the room.
  • said illumination device is attached to said housing so as to illuminate a rear side of said slats when viewed in an outward direction from said room. This embodiment illuminates the slats from a distance, using a light source.
  • a slat of said plurality of slats is provided with a light-guiding layer attached on a light-blocking layer so as to guide incoming light from said illumination device into said light-guiding layer, said light-guiding layer being arranged to outcouple light at a plurality of positions.
  • the light sources may typically be LEDs.
  • Figure 1 schematically shows a first embodiment of a daylight shielding device according to the invention
  • Figure 2 schematically shows a second embodiment of a daylight shielding device according to the invention
  • Figure 3 schematically shows the second embodiment of Figure 2 in another operating arrangement
  • FIG. 4 shows another embodiment of the daylight shielding device
  • Figure 5 is a cross-sectional view of the embodiment shown in Figure 4; and Figure 6 is a cross-sectional view of a variation of the embodiment shown in
  • Figure 1 shows a daylight shielding device 1 comprising a housing 2 for attachment to a window sill or the like (not shown), and controls (not shown) for controlling the position and orientation of lamellae or slats 3 as used in conventional devices.
  • the device 1 shown in the Figure typically has vertical slats.
  • an illumination device 4 typically, a spotlight, narrow-beam light or so-called 'wall- washer' with a narrow beam parallel to the illuminated surface, a laser light or light emitted by a LED device
  • an illumination device 4 typically, a spotlight, narrow-beam light or so-called 'wall- washer' with a narrow beam parallel to the illuminated surface, a laser light or light emitted by a LED device
  • a room can be illuminated in a natural way or for decorative purposes, for instance, by choosing a variety of colored light sources.
  • a directional effect can be obtained so as to direct light in a predetermined direction.
  • This directional effect can be obtained all the better in the second embodiment illustrated in Figure 2.
  • This Figure shows horizontal slats 5, used as Venetian blinds, etc. in conventional sun shield devices, wherein the slats 5 are reversed in a direction relative to the normal orientation for shielding daylight.
  • the curvature and orientation of the slats 5 can typically be matched to the illumination light source 4 which may be, for example, a point source or a line source, so that the slats 5 can be used to give a directing effect to a light beam reflected into the room.
  • FIG. 3 this is shown in Figure 3, wherein the relative orientation of the slats 5 is selected so as to converge light reflected on the plurality of slats 5, particularly by orienting the slats 5 at an increasing angle for slats 5 arranged along the vertical.
  • a pattern 6 i.e. a diffusing pattern indicated by dotted lines 6 can be applied on the lamellae 3 in order to achieve a more homogeneous light distribution.
  • Figure 4 shows an alternative of the inventive concept, wherein anorganic LEDs 7 of Red Green and Blue colors are attached to the slat 5.
  • the slat 5 and the LEDs 7 are arranged to reflect light from LEDs 7 via the slat 5 into the room, specifically by providing a light-guiding layer 8 attached on a light-blocking layer 9.
  • the light-guiding layer 8 reflects incoming light in the layer via multiple reflections (see Figure 5) from said illumination device into said light-guiding layer, inter alia, by total internal reflection in the light-guiding layer and by reflection of the light-blocking layer 9.
  • the light-guiding layer promotes color mixing of the three RGB colors.
  • a microstructure can be provided near the front side 10 as well as near the bottom side so as to achieve (homogeneous) light outcoupling on the front side 10.
  • Figure 5 is a schematic side view of the slat shown in Figure 4.
  • the light- blocking layer 9 is further used for shielding daylight, wherein the face of the light-blocking layer 9 annexed to the light-guiding layer may be reflective.
  • the light-blocking layer 9 may be provided in the form of a coating or film, for instance, by sputtering aluminum on the light-guiding layer, but it may also be provided as a light-blocking substrate which provides structural integrity, particularly in the form of a metal (such as aluminum) slat 5 coated with a transparent layer 8, for instance, of a glass type or a polycarbonate layer, PMMA or the like.
  • the dotted line 11 indicates diffusor elements and/or a microstructure which can promote the outcoupling of light at a plurality of positions in said light-guiding layer by changing the direction of travel of the light beams 12.
  • the number of illuminated slats may vary, as may the texture and coloring of the slats.
  • each slat is provided with at least one light source attached thereto.
  • LEDs may be arranged to provide illumination from both sides, or, as shown in Figure 6, also at intermediate positions. This can be arranged by providing the light sources 13 with an adequate electrode structure in intermediate layers, etc. by means of techniques conventionally known in display technology.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Blinds (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Planar Illumination Modules (AREA)

Abstract

A daylight shielding device comprising: a plurality of slats for shielding daylight from a room; a housing for attachment to a window sill or the like, and controls for controlling the position and orientation of the slats, and an illumination device for illuminating said slats. According to the invention, the illumination device and the slats are configured so as to reflect light from said illumination device via said slats into the room. In this way, the slats can be actively used as an indirect illumination source.

Description

Daylight shielding device
The invention relates to a daylight shielding device comprising a plurality of slats for shielding daylight from a room, a housing for attachment to a window sill or the like, and controls for controlling the position and orientation of the slats, and an illumination device for illuminating said slats. DE10131598 discloses a daylight shielding device comprising organic light- emitting diodes (OLED) attached to the slats. However, OLEDs have a very low radiation intensity and such a configuration has a limited illumination performance.
It is an object of the invention to provide a daylight shielding device wherein the illumination performance is enhanced. Accordingly, the invention provides a daylight shielding device wherein said illumination device and said slats are configured so as to reflect light from said illumination device via said slats into the room. In particular, using the optical properties of the slats, a more powerful illumination source can be used, while still providing substantially homogeneous lighting. In one embodiment, said illumination device is attached to said housing so as to illuminate a rear side of said slats when viewed in an outward direction from said room. This embodiment illuminates the slats from a distance, using a light source. In another embodiment, a slat of said plurality of slats is provided with a light-guiding layer attached on a light-blocking layer so as to guide incoming light from said illumination device into said light-guiding layer, said light-guiding layer being arranged to outcouple light at a plurality of positions. In this case, the light sources may typically be LEDs.
The invention will be further elucidated with reference to the drawings, in which
Figure 1 schematically shows a first embodiment of a daylight shielding device according to the invention;
Figure 2 schematically shows a second embodiment of a daylight shielding device according to the invention; Figure 3 schematically shows the second embodiment of Figure 2 in another operating arrangement;
Figure 4 shows another embodiment of the daylight shielding device;
Figure 5 is a cross-sectional view of the embodiment shown in Figure 4; and Figure 6 is a cross-sectional view of a variation of the embodiment shown in
Figure 4.
Figure 1 shows a daylight shielding device 1 comprising a housing 2 for attachment to a window sill or the like (not shown), and controls (not shown) for controlling the position and orientation of lamellae or slats 3 as used in conventional devices. The device 1 shown in the Figure typically has vertical slats. In the embodiment shown, an illumination device 4 (typically, a spotlight, narrow-beam light or so-called 'wall- washer' with a narrow beam parallel to the illuminated surface, a laser light or light emitted by a LED device) is attached to the housing 2 for illuminating said slats 3. By illuminating the slats 3, a room can be illuminated in a natural way or for decorative purposes, for instance, by choosing a variety of colored light sources. By orienting the slats 3, a directional effect can be obtained so as to direct light in a predetermined direction.
This directional effect can be obtained all the better in the second embodiment illustrated in Figure 2. This Figure shows horizontal slats 5, used as Venetian blinds, etc. in conventional sun shield devices, wherein the slats 5 are reversed in a direction relative to the normal orientation for shielding daylight. According to the invention, the curvature and orientation of the slats 5 can typically be matched to the illumination light source 4 which may be, for example, a point source or a line source, so that the slats 5 can be used to give a directing effect to a light beam reflected into the room. In a particular embodiment, this is shown in Figure 3, wherein the relative orientation of the slats 5 is selected so as to converge light reflected on the plurality of slats 5, particularly by orienting the slats 5 at an increasing angle for slats 5 arranged along the vertical. Additionally, a pattern 6 (i.e. a diffusing pattern indicated by dotted lines 6) can be applied on the lamellae 3 in order to achieve a more homogeneous light distribution.
Figure 4 shows an alternative of the inventive concept, wherein anorganic LEDs 7 of Red Green and Blue colors are attached to the slat 5. In this embodiment, the slat 5 and the LEDs 7 are arranged to reflect light from LEDs 7 via the slat 5 into the room, specifically by providing a light-guiding layer 8 attached on a light-blocking layer 9. The light-guiding layer 8 reflects incoming light in the layer via multiple reflections (see Figure 5) from said illumination device into said light-guiding layer, inter alia, by total internal reflection in the light-guiding layer and by reflection of the light-blocking layer 9. In addition, the light-guiding layer promotes color mixing of the three RGB colors. Furthermore, a microstructure can be provided near the front side 10 as well as near the bottom side so as to achieve (homogeneous) light outcoupling on the front side 10.
Figure 5 is a schematic side view of the slat shown in Figure 4. The light- blocking layer 9 is further used for shielding daylight, wherein the face of the light-blocking layer 9 annexed to the light-guiding layer may be reflective. The light-blocking layer 9 may be provided in the form of a coating or film, for instance, by sputtering aluminum on the light-guiding layer, but it may also be provided as a light-blocking substrate which provides structural integrity, particularly in the form of a metal (such as aluminum) slat 5 coated with a transparent layer 8, for instance, of a glass type or a polycarbonate layer, PMMA or the like. The dotted line 11 indicates diffusor elements and/or a microstructure which can promote the outcoupling of light at a plurality of positions in said light-guiding layer by changing the direction of travel of the light beams 12. The number of illuminated slats may vary, as may the texture and coloring of the slats. In the preferred embodiment, each slat is provided with at least one light source attached thereto.
Although Figure 5 only shows illumination from a single side, LEDs may be arranged to provide illumination from both sides, or, as shown in Figure 6, also at intermediate positions. This can be arranged by providing the light sources 13 with an adequate electrode structure in intermediate layers, etc. by means of techniques conventionally known in display technology.
The invention has been illustrated with reference to the Figures without being limited thereto. The skilled person will understand that variations and modifications are possible without departing from the scope of the invention. Such variations may comprise additional surface structures for providing specific lighting effects, in addition to coloring of the light-guiding layer, the substrate and/or the light sources. These variations are deemed to fall within the scope of the invention as defined in the appending claims.

Claims

CLAIMS:
1. A daylight shielding device comprising: a plurality of slats for shielding daylight from a room; a housing for attachment to a window sill or the like, and controls for controlling the position and orientation of the slats, and - an illumination device for illuminating said slats; wherein said illumination device and said slats are configured so as to direct light from said illumination device via said slats into the room.
2. A daylight shielding device according to claim 1, wherein said illumination device is attached to said housing to illuminate a rear side of said slats when viewed in an outward direction from said room.
3. A daylight shielding device according to claim 1 or 2, wherein said slats are oriented so as to give said reflected light a focusing effect.
4. A daylight shielding device according to any one of the preceding claims, wherein said illumination device comprises a plurality of light-emitting sources directed towards said slats.
5. A daylight shielding device according to claim 4, wherein said light-emitting sources are LEDs.
6. A daylight shielding device according to claim 4 or 5, wherein a slat of said plurality of slats is provided with a light-guiding layer attached on a light-blocking layer so as to guide incoming light from said illumination device into said light-guiding layer, said light-guiding layer being arranged to outcouple light at a plurality of positions in said light- guiding layer.
7. A daylight shielding device according to claim 6, wherein said slats comprise at least one light source attached thereto.
8. A daylight shielding device according to claim 6 or 7, wherein said light- guiding layer source is provided with diffusor elements.
9. A daylight shielding device according to any one of claims 6 to 8, wherein said light-guiding layer is provided with a light-redirecting microstructure on any one of the top and bottom sides of said layer.
10. A daylight shielding device according to any one of claims 6 to 9, wherein said light-guiding layer is provided as a transparent layer on a reflective plate.
11. A daylight shielding device according to any one of claims 6 to 9, wherein said light-guiding layer is provided as a transparent layer on a reflective coating.
12. A daylight shielding device according to any one of claims 10 and 11, wherein said transparent layer comprises polycarbonate or PMMA, and/or wherein said reflective plate or coating comprises aluminum.
PCT/IB2006/051511 2005-05-17 2006-05-15 Daylight shielding device WO2006123283A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP06765679A EP1886065A2 (en) 2005-05-17 2006-05-15 Daylight shielding device
CN2006800169672A CN101175947B (en) 2005-05-17 2006-05-15 Daylight shielding device
JP2008511838A JP5315046B2 (en) 2005-05-17 2006-05-15 Daylight shielding device
US11/914,244 US20080271856A1 (en) 2005-05-17 2006-05-15 Daylight Shielding Device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05104114.3 2005-05-17
EP05104114 2005-05-17

Publications (2)

Publication Number Publication Date
WO2006123283A2 true WO2006123283A2 (en) 2006-11-23
WO2006123283A3 WO2006123283A3 (en) 2007-03-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/051511 WO2006123283A2 (en) 2005-05-17 2006-05-15 Daylight shielding device

Country Status (5)

Country Link
US (1) US20080271856A1 (en)
EP (1) EP1886065A2 (en)
JP (1) JP5315046B2 (en)
CN (1) CN101175947B (en)
WO (1) WO2006123283A2 (en)

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WO2008129186A2 (en) * 2007-03-09 2008-10-30 David Harboun Venetian blind for window bays
WO2008129467A1 (en) * 2007-04-20 2008-10-30 Philips Intellectual Property & Standards Gmbh Daylight deflection system with integrated artificial light source
WO2009024918A1 (en) 2007-08-21 2009-02-26 Philips Intellectual Property & Standards Gmbh Window blind with illuminated lamellae
JP2009289427A (en) * 2008-05-27 2009-12-10 Panasonic Electric Works Co Ltd Shading device-cum-luminaire
FR2939829A1 (en) * 2008-12-17 2010-06-18 David Harboun Venetian blind for use in front of window of room of building, has system displacing strips between folded position and deployed position, and pattern defined by zone provided in strip and appearing when zone is traversed by light
WO2011107918A1 (en) 2010-03-02 2011-09-09 Koninklijke Philips Electronics N.V. System for combining exterior lighting and artificial lighting
US9557023B2 (en) 2010-11-15 2017-01-31 Tubelite, Inc. Indirect daylighting device

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US20120205055A1 (en) * 2011-02-10 2012-08-16 Todd Underwood Reflector system for a window blind
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US9169690B2 (en) * 2013-03-14 2015-10-27 Lutron Electronics Co., Inc. Window treatment having backlighting
US10544619B2 (en) * 2017-02-13 2020-01-28 Hall Labs Llc Self-cleaning window blinds with photocatalytic material
KR20220082844A (en) 2019-10-18 2022-06-17 헌터더글라스인코포레이티드 Illuminated Building Structure Covers and Methods of Operating Illuminated Building Structure Covers
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Cited By (14)

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Publication number Priority date Publication date Assignee Title
WO2008129186A3 (en) * 2007-03-09 2009-04-09 David Harboun Venetian blind for window bays
WO2008129186A2 (en) * 2007-03-09 2008-10-30 David Harboun Venetian blind for window bays
JP2010525519A (en) * 2007-04-20 2010-07-22 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Daylight deflection system with integrated artificial light source
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JP5315046B2 (en) 2013-10-16
CN101175947A (en) 2008-05-07
WO2006123283A3 (en) 2007-03-22
CN101175947B (en) 2010-12-08
US20080271856A1 (en) 2008-11-06
EP1886065A2 (en) 2008-02-13
JP2008540884A (en) 2008-11-20

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