EP0200876B1 - Disposition pour l'éclairage d'un local à la lumière du jour - Google Patents

Disposition pour l'éclairage d'un local à la lumière du jour Download PDF

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Publication number
EP0200876B1
EP0200876B1 EP86102960A EP86102960A EP0200876B1 EP 0200876 B1 EP0200876 B1 EP 0200876B1 EP 86102960 A EP86102960 A EP 86102960A EP 86102960 A EP86102960 A EP 86102960A EP 0200876 B1 EP0200876 B1 EP 0200876B1
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EP
European Patent Office
Prior art keywords
window
arrangement
light
angle
reflector
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Expired
Application number
EP86102960A
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German (de)
English (en)
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EP0200876A1 (fr
Inventor
Christian Bartenbach
Martin Möller
Rudolf Lanzenberger
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Siemens AG
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Siemens AG
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Priority to AT86102960T priority Critical patent/ATE38422T1/de
Publication of EP0200876A1 publication Critical patent/EP0200876A1/fr
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Publication of EP0200876B1 publication Critical patent/EP0200876B1/fr
Expired legal-status Critical Current

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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
    • F21S11/00—Non-electric lighting devices or systems using daylight

Definitions

  • the invention relates to an arrangement according to the preamble of claim 1.
  • Such an arrangement is known from DE-OS-1 497 348.
  • Several flat reflectors are arranged at a distance one above the other between two window panes, two adjacent reflectors each forming a light shaft with a cross section that is constant over its width.
  • the diagonal angle between a diagonal beam running through the light well and a reference plane, e.g. B. the vertical plane, is so large here that even a person sitting directly at the window can look out through the light wells and their eyes are hit by multiple reflected rays.
  • Such a window is practically very bright from all normal viewing angles of a person in the room, i.e. its luminance is in great contrast to the luminance of the walls surrounding the window.
  • each light shaft in an arrangement according to the preamble of claim 1 so that all the light passing through it is emitted in a spatial area that is above a diagonal angle, which is dimensioned so that the diagonal beam from one The person who is most distant from the window in a workplace is no longer visible.
  • the inventive solution to this problem is characterized in claim 1.
  • the light is emitted into the room at such angles that the inner windows appear dark even from the most unfavorable viewing position.
  • the reflective ceiling and the walls opposite the light wells are brightened so that they act as secondary emitters that reflect the light at favorable angles to the workplace.
  • Such illumination not only saves energy but in particular creates a very favorable, glare-free work situation; this also prevents annoying reflections on screens.
  • the distribution of the luminous flux from a light shaft over the ceiling and the wall opposite the window and in particular also the angle of incidence of the light into the room above the diagonal angle can be varied within wide limits within the scope of the invention: for example, the luminous flux directed onto the window area near the window can be varied above all by setting a main axis angle that deviates from zero.
  • the ceiling section lying further inside in the room receives a larger proportion of light, the smaller the angle of inclination of the flat top reflector.
  • Another degree of freedom is to choose the focal length of the sub-reflector to be the same, smaller or larger than the height of the entrance window.
  • the entrance window of each light well can be arranged in a vertical plane or in a plane inclined towards it.
  • the parameters of the light wells can be dimensioned such that the light that is incident in the angular range between the diagonal beam and the main axis of the outer light well is emitted into the interior in an angular range that is in turn limited by the diagonal beam and the main axis of the inner light well.
  • Light wells lying one above the other - which can also consist of an inner light well and an outer light well - are preferably formed by identical molded bodies arranged one above the other. These can be of such a small width that they can be accommodated in the space between the panes of composite windows. With these small dimensions, it is particularly advantageous to extrude the individual molded parts.
  • At least one viewing window below the light wells approximately at eye level for people sitting at workplaces, which enables contact with the outside world; however, this should be covered by a blind.
  • sun protection in front of the light wells, through which direct sunlight, e.g. B. with the help of retroreflection, kept away from the light wells.
  • the space shown in cross-section in FIG. 1 has a window on its left outer wall, which is not described in any more detail and is divided into sub-areas by internals placed in front of it:
  • a viewing window Fio is arranged approximately at eye level M of a person sitting at a table T and can be darkened by a blind N.
  • interior windows Fi1, Fi2 are two interior light wells Li1, Li2, whose vertical light exit surfaces facing the room.
  • the outward-facing light entry surfaces are correspondingly referred to as entry windows Fm1 and Fm2.
  • the diagonal beam Di thus delimits the area directly illuminated by a light well from an underlying blocking zone Z, which is only illuminated by daylight that has been reflected by the reflective ceiling P and / or the vertical walls of the room. This light produces practically no disturbing reflections on a display device G.
  • the diagonal beam Di1 with the diagonal angle ai1 is now drawn in for the lowermost light well Li1: the position of the lower edge Ui1 of the inner window Fi1 and the upper edge Om1 of the entrance window Fm1 is thus determined.
  • the sub-reflector RUi1 is arranged here so that the parabola, according to which this reflector runs, has a vertical main axis, and its focal point B1 lies in the upper edge Om1 of the entrance window Fm1:
  • the diagonal beam Di1 is therefore a focal point beam and thus the distance between the focal point B1 and the lower edge Ui1 of the inner window Fi1 equal to the distance from Ui1 in the vertical direction from the associated guideline of the parabola.
  • Half the distance of this guideline from the focal point B1 then results in the apex S1.
  • the focal length which is identical to the height of the entrance window Fm, is given by
  • the angle of inclination ßi1 of the flat top reflector ROi1 is equal to half the diagonal angle ai1, both angles being measured from the vertical main axis.
  • the upper light well Li2 which is constructed according to the same principle, shows how focal rays are redirected into the room in parallel at diagonal angle ai2.
  • a light well is also indicated on the basis of FIG. 2, which is delimited by a sub-reflector RUi '- shown in dotted lines, the inner window Fi' lying in a plane which, with the vertical V, forms an acute angle which is open at the bottom.
  • RUi '- sub-reflector RUi '- shown in dotted lines
  • the inner window Fi' lying in a plane which, with the vertical V, forms an acute angle which is open at the bottom.
  • the entrance window of each light well receives light from an angular range of 180 °. This can be disruptive if lower parts of the building are considered as secondary radiators. It is then expedient to limit the angular range for incident light by placing an outside light shaft in front of the inner light shaft, as is shown with reference to FIG. 3: inner window Fi and entry window Fm of the inner shaft Li lie - as in FIG. 2 - in two mutually parallel vertical planes V or S. Deviating from FIG. 2, the main axis Hi of the sub-reflector RUi is inclined by the main axis angle si against the vertical plane 5.
  • the outer light shaft La lies between an outer window Pa with the upper edge Oa and the lower edge Ua and the entry window Fm of the inner light shaft Li runs, whose focal point B lies in the upper edge om of the entrance window Fm and whose main axis Ha is inclined by the main axis angle E a against the vertical plane S.
  • the diagonal beam Da runs through the lower edge Ua of the outer window Pa and the upper edge om of the entrance window Fm, which includes an angle of inclination aa with the main axis Ha.
  • the outside light shaft La only receives light and directs it into the inner light shaft, insofar as its angle of incidence lies in the angular range aa. This light is then emitted into the room in an angular range ai between the diagonal Di and the main axis Hi of the interior light well Li.
  • a part of a composite window is shown in cross section, the two window panes parallel to one another being designated by 1 and 2.
  • Shaped bodies 3 with an identical cross-section are arranged at an equal distance above one another between these panes, which are also mirror images of a vertical plane S - parallel to the window panes.
  • the surfaces of the shaped bodies are designed to be reflective, in particular reflective, so that an outer light well La and an inner light well Li are formed between the superimposed shaped bodies.
  • the diagonal angle a for the diagonal beam D for the outside light well and the inner light well is identical to 90 ° with respect to the vertical plane S, in which the main axes of the parabolas of the lower reflectors lie: This means that the upper reflectors also have an identical inclination angle ⁇ of 45 °.
  • An arrangement with shaped bodies of this type receives light from an angular range of 90 ° between D and S - and emits it over the same angular range - between D and S - towards the ceiling and opposite walls of the room.
  • a known sunshade 4 is arranged in the form of rotatable prismatic glasses, which can always be adjusted so that - regardless of the position of the sun - no sunbeam can penetrate the light shafts.

Claims (17)

1. Dispositif pour l'éclairage d'un local à la lumière du jour, comprenant, entre une fenêtre d'entrée (Fm), présentant un bord supérieur (Om) et un bord inférieur (Um), et une fenêtre inférieure (Fi), présentant un bord supérieur (Oi) et un bord inférieur (Ui), un puits de lumière intérieur (Li) ayant une section droite constante sur sa largeur, qui est délimité par un réflecteur inférieur (RUi) s'étendant entre les bords inférieurs parallèles (Um, Ui) des fenêtres d'entrée et intérieure et un réflecteur plan (ROi), s'étendant entre les bords supérieurs (Om, Oi), puits de lumière intérieur qui est défini par un rayon diagonal (Di), avec un angle de diagonale (ai), passant par le bord inférieur (Ui) de la fenêtre intérieure (Fi) et le bord supérieur (Om) de la fenêtre d'entrée (Fm), caractérisé en ce
que le réflecteur inférieur (RUi) constitue, en section droite, une partie d'une parabole dont l'axe principal (Hi) passe par le bord supérieur (Om) de la fenêtre d'entrée (Fm) et forme avec un plan vertical (V) un angle d'axe principal aigu (si) qui s'ouvre vers le plafond (P) du local,
que l'angle d'inclinaison (βi) du réflecteur supérieur (ROi) du puits de lumière (Li) est tout au plus égal à la moitié de l'angle de diagonale (ai), l'angle d'inclinaison (βi) et l'angle de diagonale (ai) étant mesurés à partir de l'axe principal (Hi) du parabole,
que la tangente au réflecteur inférieur (RUi) passe par le bord inférieur (Ui) de la fenêtre intérieure (Fi), parallèlement au réflecteur supérieur (ROi), et que le plafond du local est rendu réfléchissant.
2. Dispositif selon la revendication 1, caractérisé en ce que la fenêtre intérieure (Fi) est située dans un plan renfermant avec le plan (V) un angle aigu s'ouvrant vers le bas.
3. Dispositif selon la revendication 2, comprenant plusieurs puits de lumière intérieurs disposés l'un au-dessus de l'autre, caractérisé en ce que toutes les fenêtres intérieures (Fi) sont situées dans un plan formant avec la verticale (V) un angle aigu s'ouvrant vers le bas.
4. Dispositif selon la revendication 1, caractérisé en ce que les fenêtres intérieures (Fi) sont situées dans le plan vertical (V).
5. Dispositif selon une des revendications 1 à 4, caractérisé en ce que la fenêtre d'entrée (Fm) du puits de lumière intérieur est située dans un plan vertical.
6. Dispositif selon une des revendications 1 à 4, caractérisé en ce que la fenêtre d'entrée (Fm) est située dans un plan formant avec la verticale un angle aigu s'ouvrant vers le bas.
7. Dispositif selon la revendication 4, caractérisé en ce que les fenêtres intérieures (Fi) et les fenêtres d'entrée (Fm) sont situées dans des plans verticaux (V) différents, présentant un espacement transversal (b).
8. Dispositif selon la revendication 7, caractérisé en ce que l'angle d'axe principal (ei) de la parabole, correspondant au profil du réflecteur inférieur (RUi), est nul et la distance focale est fixée par la relation
Figure imgb0005
où ai = l'angle de diagonale et b = l'espacement transversal des plans verticaux (V),
et que l'angle d'inclinaison (ßi) du réflecteur supérieur (ROi) est égal à la moitié de l'angle de diagonale (ai).
9. Dispositif selon la revendication 5 ou 8, caractérisé en ce qu'un puits de lumière extérieur (La), présentant un réflecteur supérieur plan (ROa) et un réflecteur inférieur (RUa), est disposé entre une fenêtre extérieure (Fa) avec un bord supérieur (Oa) et un bord inférieur (Ua) et une fenêtre d'entrée (Fm) du puits de lumière (Li),
en ce que le réflecteur inférieur (RUa) s'étend entre le bord inférieur (Um) de la fenêtre extérieure (Fa) et le bord inférieur (Um) de la fenêtre d'entrée (Fm) et présente en coupe transversale la forme d'une partie d'une parabole dont l'axe principal (Ha) passe par le bord supérieur (Om) de la fenêtre d'entrée (Fm) et forme avec la verticale (V) un angle d'axe principal (sa) qui est un angle aigu ouvert vers le haut,
que le réflecteur supérieur (ROa) s'étend entre le bord supérieur (Oa) de la fenêtre extérieure (Fa) et le bord supérieur (Om) de la fenêtre d'entrée (Fm),
et que l'angle d'inclinaison (pa) du réflecteur supérieur (ROa) - mesuré à partir de l'axe principal (Ha) - est égal à la moitié de l'angle de diagonale (aa) d'un rayon diagonal (Da) du puits de lumière extérieur (La), le rayon (Da) passant par le bord inférieur (Ua) de la fenêtre extérieure (Fa) et par le bord supérieur (Om) de la fenêtre d'entrée (Fm) et l'angle de diagonale (aa) étant mesuré à partir de l'axe principal (Ha).
10. Dispositif selon la revendication 9, comprenant plusieurs puits de lumière l'un au-dessus de l'autre, caractérisé en ce que les fenêtres extérieures (Fa) sont situées dans un plan formant avec un plan vertical un angle aigu ouvert vers le bas.
11. Dispositif selon la revendication 9, comprenant plusieurs puits de lumière l'un au-dessus de l'autre, caractérisé en ce que les fenêtres extérieures (Fa) sont situées dans un plan vertical s'étendant parallèlement à distance du plan des fenêtres d'entrée (Fm) et que le foyer du réflecteur (RUa) est situé sur le bord supérieur (Om) de la fenêtre d'entrée (Fm).
12. Dispositif selon la revendication 11, caractérisé en ce que les sections droites du puits de lumière intérieure (Li) et du puits de lumière extérieur (La) sont identiques et symétriques par rapport à un plan de symétrie vertical (S) dans lequel sont situées les fenêtres d'entrée (Fm) des puits de lumière intérieurs (Li).
13. Dispositif selon la revendication 12, caractérisé en ce que les angles d'axe principal (sa, si) des réflecteurs inférieurs (RUa, RUi) sont égaux à zéro.
14. Dispositif selon une des revendications 1 à 13, comprenant plusieurs puits de lumière l'un au-dessus de l'autre, caractérisé en ce que les puits de lumière intérieurs (Li) sont disposés de telle manière et possèdent un angle de diagonale (ai) tel qu'une personne assise au poste de travail le plus éloigné de la fenêtre ne voit pas, à la hauteur des yeux (M), de rayon lumineux provenant d'une fenêtre intérieure (Fi).
15. Dispositif selon la revendication 14, caractérisé en ce qu'une fenêtre d'observation (Fio), pouvant être couverte par un store (N) ou un dispositif analogue, est située sous les puits de lumière, à la hauteur des yeux (M) de personnes assises à des postes de travail.
16. Dispositif selon une des revendications 1 à 15, caractérisé en ce qu'une protection pare- soleil est disposée devant les fenêtres d'entrée (Fm) ou devant les fenêtres extérieures (Fa).
17. Dispositif selon une des revendications 1 à 16, caractérisé en ce que les puits de lumière sont délimités par des pièces façonnées (3) disposées l'une au-dessus de l'autre, pièces qui ont la même section droite et qui présentent des surfaces réfléchissantes.
EP86102960A 1985-04-30 1986-03-06 Disposition pour l'éclairage d'un local à la lumière du jour Expired EP0200876B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86102960T ATE38422T1 (de) 1985-04-30 1986-03-06 Anordnung zur ausleuchtung eines raumes mit tageslicht.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3515603 1985-04-30
DE3515603 1985-04-30

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EP0200876A1 EP0200876A1 (fr) 1986-11-12
EP0200876B1 true EP0200876B1 (fr) 1988-11-02

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US (1) US4699467A (fr)
EP (1) EP0200876B1 (fr)
JP (1) JPS61254788A (fr)
AT (1) ATE38422T1 (fr)
AU (1) AU576151B2 (fr)
CA (1) CA1257237A (fr)
DE (1) DE3661104D1 (fr)
ZA (1) ZA863221B (fr)

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EP0767341A1 (fr) 1995-09-07 1997-04-09 Siemens Aktiengesellschaft Système d'éclairage de locaux utilisant la lumière diurne et artificielle

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2637048A1 (fr) * 1988-09-23 1990-03-30 Olivier Dominique Dispositif d'eclairage utilisant l'energie solaire
EP0767341A1 (fr) 1995-09-07 1997-04-09 Siemens Aktiengesellschaft Système d'éclairage de locaux utilisant la lumière diurne et artificielle

Also Published As

Publication number Publication date
CA1257237A (fr) 1989-07-11
ZA863221B (en) 1986-12-30
AU576151B2 (en) 1988-08-11
ATE38422T1 (de) 1988-11-15
AU5680286A (en) 1986-11-06
JPS61254788A (ja) 1986-11-12
DE3661104D1 (en) 1988-12-08
EP0200876A1 (fr) 1986-11-12
US4699467A (en) 1987-10-13

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