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WO2011064764A2 - Lamelles de guidage de lumière présentant des structures dentées aplaties - Google Patents

Lamelles de guidage de lumière présentant des structures dentées aplaties Download PDF

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Publication number
WO2011064764A2
WO2011064764A2 PCT/IB2010/055509 IB2010055509W WO2011064764A2 WO 2011064764 A2 WO2011064764 A2 WO 2011064764A2 IB 2010055509 W IB2010055509 W IB 2010055509W WO 2011064764 A2 WO2011064764 A2 WO 2011064764A2
Authority
WO
WIPO (PCT)
Prior art keywords
prism
slats
reflector
slat
light guiding
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/IB2010/055509
Other languages
English (en)
Other versions
WO2011064764A3 (fr
Inventor
Helmut Koester
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE200910056360 external-priority patent/DE102009056360B4/de
Priority claimed from DE102009056343A external-priority patent/DE102009056343A1/de
Application filed by Individual filed Critical Individual
Priority to EP10809047A priority Critical patent/EP2507465A2/fr
Publication of WO2011064764A2 publication Critical patent/WO2011064764A2/fr
Publication of WO2011064764A3 publication Critical patent/WO2011064764A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • E06B2009/2417—Light path control; means to control reflection
    • 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
    • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable

Definitions

  • the present invention relates to prism slats as in accordance with the preamble of the main claim.
  • the aim is to define the total energy transmission, or energy reflection, on one hand, and to ensure glare free room illumination, on the other, while the task consists furthermore in providing a method of glare free deflecting a particular section of the sky, for instance zenith radiation, into the depth of an interior space.
  • the point is the quantitative definition of total energy transmission, on one hand, and the directional definition of light deflection, on the other.
  • the slat is given a light guidance exactly to be calculated which ensures a forecast-able optical behaviour or defined optical properties, and hence glare freedom.
  • the advantage of the invention is to be seen in light engineering, on one hand, and in building physics, on the other.
  • the advantages as shown may be realized independently on whether the sun incides from direction A or direction B into the prism structure.
  • the illumination intensity in the exterior space in the direct sun amounts up to 100,000 Ix. Only 1 ,000 Ix to 2,000 Ix in the window are sufficient to illuminate a room with 500 Ix.
  • the advantage of the slat is, therefore, to be seen in the simultaneity of deflecting the overheating sun via prismatic surface shaping (primary reflector) and guiding-in the sun light for an improved natural room illumination via the tooth tips (secondary reflec- tor).
  • the relation of prism width x 2 to flattening should be x-i > 5:1 .
  • the flattening over a slat cross section may also vary to realize specific light guiding effects.
  • Flattening may for instance continuously increase from the irradiation side of a slat in order to deflect more flat winter sun more effectively into the interior space.
  • Figure 1 shows a micro-structured slat with light deflection.
  • Figure 2 shows the formation of a prism edge
  • Figure 3 shows a typical shape of the prism edges over a slat contour
  • Figure 4 shows two Venetian blind slats disposed one upon the other with the light deflection on the prism and prism edges.
  • FIGS 5 and 6 show the analysis of the individual reflective systems of Figure 4
  • Figure 7 shows a w-shaped guided slat.
  • Figure 1 shows a typical micro-structured slat 10 with light incidence 1 1 to 13 on the fragments of a Fresnel reflector (primary reflector system) and light incidence 14 to 16 on the flattened tips (secondary reflector system).
  • the sun is reflected in the direction of radiation incidence A.
  • the flattened prism edges the light is deflected into the interior space in direction B.
  • the flattening of the tips to constitute a secondary light guiding system occurs for instance in parallel to the curvature 17 of the slat.
  • a parabolic secondary reflector with a focus F 2 on the room interior side which results from fragments of prism flattening.
  • the structural-physical and light- technological properties of a slat may be defined and modulated.
  • the total energy transmission of the slats is defined via the relation of Xi/x 2 .
  • the direction of the light guided in, or room depth illumination of the interior space, respectively, is determined by the contour of the superimposed secondary light guiding system.
  • Figure 2 shows a detail of a tooth tip transformation.
  • the tips of the reflector faces 31 , 32 are flattened so that a third reflector face 32 results.
  • the latter is broader by the bulges 35, 36 and results in a total width of x-i .
  • the size of these teeth x 2 is almost op- tional and may be made significantly larger than 1 mm but also significantly smaller than 0.1 mm.
  • the slat may be exposed to direct sun incidence either on the long prism side y- ⁇ or on the short prism side y 2 , or the prisms are symmetrical having an identical cathetus.
  • These surfaces are for instance produced by a process of embossing into a thin aluminium strap or another metallic material or in plastic layers or coatings exhibiting plastic behaviour under pressure and/or heat.
  • material displacement and broadening of reflector fragment x-i occurs by the bulges being formed.
  • a further possibility consists in pasting embossed foils onto a slat or thin tape.
  • embossing rollers bearing the exact prism structure are preferably employed.
  • a particularly interesting manufacturing process consists of two steps: In the first step, the metal strip is prismatically embossed the embossing process being performed either to produce a flat strip or one in concave-convex shape.
  • the first step the metal strip is prismatically embossed the embossing process being performed either to produce a flat strip or one in concave-convex shape.
  • a second operational step when roll shaping into a concave-convex shape, the edges are pressed flat.
  • the reflection behaviour of the slat is defined by the contact pressure, or the flattening, of the relation of Xi to x 2 . By using this procedure, it is also possible to shape the slat surface to show a different characteristic.
  • the prisms according to Figure 3 in the first portion A facing sun incidence may be rather sharp-edged, and in the second portion B facing the interior space may be rolled out more flat in order to design the slat surfaces in the op- tical behaviour thereof depending on light and climatic requirements.
  • the embodiments shown in Figures 1 to 3 constitute mere examples only. The process may be used for varied designs.
  • Figure 4 shows the optical system of the penetration of a prismatic slat with a so-called reflective flat slat.
  • Figures 5 and 6 show the decomposition of these two optical systems penetrating each other, as single representations each.
  • material composites such as for instance plated steel band or plated aluminium are particularly suitable.
  • a tempered base material is selected onto which a thin high-purity aluminium layer is rolled on.
  • High-purity aluminium is a very soft material that is easily to be embossed and which in the second working step according to the invention may easily be transformed into the secondarily superimposed contour.
  • the upper side may also be coated with a clear varnish, whereby in view of light refrac- tion in an optically denser medium, additional prism effects will result. Consequently, superimposition of the light guidance via the prism catheti will follow together with the prismatic effects in the optically denser medium.
  • all slats include uniformly non-symmetric single prisms.
  • the innovation includes of course other prism shapes as well, particularly symmetrically shaped single prisms.
  • the slats may be embossed with holograms having light guiding properties according to patent claim 1 .
  • the slats may be coated with foils into which either the prisms have been embossed or the holograms have been inscribed.
  • FIG. 5 shows a further example of the invention.
  • the slat 50 includes two parts, a retro reflector 51 as a primary light guiding system and a light guiding sword 52.
  • the retro reflector 51 is penetrated by retro reflector fragments 53, 54 as secondary light guidance so that beams 55, 56 which incide in the area of retro reflector 51 onto fragments 53, 54 are deflected to the interior.
  • the advantage is that in case of high summer sun, re-deflection is primarily effected to the outside to promote passive cooling while nonetheless improved room illumination by radiation from the sky is provided.
  • fragments 53, 54 may be declined to the outside or to the inside. These inclinations of the angles are indicated by dotted lines 57, 58.
  • the flattened mirrors 32 may be superimposed by one more micro structure to distribute the redirected light in several directions. This can be done by embossing u- or v-shaped indents into the secondary reflector system. Those u- or v-shaped mirrors are preferably rectangular to the prisms or diagonal. The u- or v-shaped mirrors may form crossed patterns or wavy lines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Blinds (AREA)

Abstract

L'invention concerne des lamelles prismatiques (10) pour stores vénitiens de guidage de lumière permettant de dévier le rayonnement solaire à l'aide de faces supérieures de lamelles au moins partiellement réfléchissantes. Le faces supérieures de lamelles présentent au moins partiellement une pluralité de rainures de forme prismatique ou hologrammes, pour dévier le rayonnement solaire à l'extérieur. L'invention est caractérisée en ce qu'un système réfléchissant prismatique (10) comprenant des rainures de forme prismatique (51) est optiquement pénétré et spatialement surmonté d'au moins un autre système réfléchissant secondaire, de sorte que le rayonnement solaire (11-16) frappant depuis l'extérieur sur les lamelles prismatiques (10) peut être partiellement réfléchi sur le système réfléchissant primaire (31) ou (32) dans l'espace extérieur, et d'autres parties du rayonnement solaire peuvent, en même temps, être redirigées dans l'espace intérieur par un système réfléchissant secondaire (32).
PCT/IB2010/055509 2009-11-30 2010-11-30 Lamelles de guidage de lumière présentant des structures dentées aplaties Ceased WO2011064764A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10809047A EP2507465A2 (fr) 2009-11-30 2010-11-30 Lamelles de guidage de la lumière présentant des structures dentées aplaties

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE200910056360 DE102009056360B4 (de) 2009-11-30 2009-11-30 Lichtlenklamellen mit abgeflachten Zahnstrukturen
DE102009056343A DE102009056343A1 (de) 2009-11-30 2009-11-30 Lichtlenklamellen zur bidirektionalen Raumausleuchtung
DE102009056343 2009-11-30
DE102009056360 2009-11-30

Publications (2)

Publication Number Publication Date
WO2011064764A2 true WO2011064764A2 (fr) 2011-06-03
WO2011064764A3 WO2011064764A3 (fr) 2011-08-25

Family

ID=43903402

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/IB2010/055508 Ceased WO2011064763A2 (fr) 2009-11-30 2010-11-30 Lamelles de guidage de lumière pour éclairage ambiant bidirectionnel
PCT/IB2010/055509 Ceased WO2011064764A2 (fr) 2009-11-30 2010-11-30 Lamelles de guidage de lumière présentant des structures dentées aplaties

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/IB2010/055508 Ceased WO2011064763A2 (fr) 2009-11-30 2010-11-30 Lamelles de guidage de lumière pour éclairage ambiant bidirectionnel

Country Status (2)

Country Link
EP (1) EP2507465A2 (fr)
WO (2) WO2011064763A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106285433A (zh) * 2015-05-22 2017-01-04 于水 百叶窗及其叶片组件

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101785919B1 (ko) * 2014-09-18 2017-10-16 인하대학교 산학협력단 베네치안 블라인드용 슬랫 및 이를 포함하는 베네치안 블라인드

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4442870A1 (de) 1994-09-17 1996-03-21 Koester Helmut Jalousielamelle zur präzisen Steuerung der direkten Sonneneinstrahlung
WO2001000958A1 (fr) 1999-06-26 2001-01-04 Koester Helmut Lames de stores a bords dentes pour lumiere solaire
US6367937B2 (en) 1997-12-09 2002-04-09 K{Haeck Over (O)}Ster Helmut Sun protection installation comprising sun protection lamellae having a toothed upper side
DE202004020980U1 (de) 2004-12-17 2006-09-21 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Sonnen- und Blendschutzvorrichtung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7843639B2 (en) * 2007-03-06 2010-11-30 Kabushiki Kaisha S.T.I. Japan Light distribution control method, light distribution control device, and greenhouse using the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4442870A1 (de) 1994-09-17 1996-03-21 Koester Helmut Jalousielamelle zur präzisen Steuerung der direkten Sonneneinstrahlung
US6367937B2 (en) 1997-12-09 2002-04-09 K{Haeck Over (O)}Ster Helmut Sun protection installation comprising sun protection lamellae having a toothed upper side
WO2001000958A1 (fr) 1999-06-26 2001-01-04 Koester Helmut Lames de stores a bords dentes pour lumiere solaire
DE202004020980U1 (de) 2004-12-17 2006-09-21 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Sonnen- und Blendschutzvorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106285433A (zh) * 2015-05-22 2017-01-04 于水 百叶窗及其叶片组件

Also Published As

Publication number Publication date
WO2011064763A2 (fr) 2011-06-03
EP2507465A2 (fr) 2012-10-10
WO2011064763A3 (fr) 2011-08-25
WO2011064764A3 (fr) 2011-08-25

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