| JP2002285687 | LOUVER BLADE FITTING STRUCTURE AND FIXING TOOL |
| WO1982000490A1 | 1982-02-18 |
| US4351588A | 1982-09-28 | |||
| CH234549A | 1944-10-15 | |||
| DE3132534A1 | 1983-03-10 |
| 1. | 1) Natural light control device to be applied to a window to reduce energy consumption and increase visual com¬ fort, characterized by: 5 a vertically adjustable panel to be mounted in an inclined position outside of the abovesaid window and meant to convey daylight toward the ceiling of the room onto which the window opens, so as to diffuse the light toward the work surface from a direction almost equal to that of the 10 artificial light, and — a multichamber refracting and reflecting diffu sion screen, composed of numerous transparent glass hollow bars or tubular elements, lying horizontally, the horizontal supporting base of which is sanded on its inner face, and 15 the bars of which are arranged one on the other up to the desired height in a rigid frame mounted to be able to slide in front of the window pane, in a position lower than that of the adjustable panel. £) Natural light control device as per the previous £0 claim, characterized by the fact that the reflecting surface of the inclined panel is smooth. |
| 2. | Natural light control device as per Claim 1, char¬ acterized by the fact that the reflecting surface of the in¬ clined panel has a multitude of semispheres to increase the £5 range of diffusion. 4> Natural light control device as per Claim i, char¬ acterized by the fact that the reflecting surface of the inclined panel has rnicromirrors. |
| 3. | Natural light control device as per the previous 30 claims, characterized by the fact that the inclined panel's vertical adjustment is controlled by a sensor capable of perceiving variations in the flow of light. |
| 4. | Natural light control device as per Claim 1. char¬ acterized by the fact that the glass bars making up the 35 abovesaid reflecting and refracting diffusion screen have a quadrangular section. |
| 5. | Natural light control device as per Claims 1 and 6, characterized by the fact that said bars have a certain number of internal cross segments which delineate small 40 sideby—side chambers along the entire length of the bar. θ) Natural light control device as per Claim i, char¬ acterized by the fact that the diffuser screen with overly¬ ing bars, despite the presence of sanded surfaces, always permits seeing outside. 9) Natural light control device as per Claim 1, char¬ acterized by the fact that the propagation of the light by the reflecting and refracting screen takes place with diffu¬ sion characteristics midway between those of normal diffus¬ ers and those of direct light. 10) Natural light control device to be applied to a window in order to reduce energy consumption and increase visual comfort, as described and illustrated in the enclosed drawings. |
T is inven ion concerns a system for con rol1inp 5 natural liπnt which may be applied outsiαe windows in order- to improve visual comfort and reduce tre energy consumption necessary for art ficial lighting and cooling of indoor en¬ vironments. This system includes.
— a vertically adjustable panel for conveying day- 10 light toward the ceiling of the room onto which the window ooens, from which it will radiate toward the work surface with a direction almost equal to that of artificial light, and
- a refracting and reflecting diffusion screen, 15 consisting of numerous hollow glass bars, lying horizontal¬ ly, of a preferably quadrangular section, transparent on three sides and with the internal surface of the lower hor¬ izontal face of a satin finish. These tubular bars arm ar¬ ranged one on the other up to the desired height in a rigid
£0 frame which is mounted to slide in front of the window Dane. The presence of a multitude of sanded surfaces ar¬ ranged as horizontal segments between two transparent glass walls gives the screen a particular multiple-chamber geome¬ try which makes it able to refract and reflect the sun rays.
£5 controlling not only their heat and intensity but also their propagation with a diffusion which does not have the soft characteristics of normal diffusers (such as the well-known m lk or frosted glasses), nor is it too harsh as in the case of direct rays.
30 Thus the dazzling effects caused by the excessive brightness of windows are avoided, without losing contact with the outside., a fundamental element for the favorable i iva leness of the rooms. since this kind of screen always permits seeing what is going on outside. 5 The descri tion the invention will be better described and understood by referring to the enclosed draw¬ ings which show- only as a non-rest ctive example, some of tne preferred forms of implementation of the invention. In the drawings: 0 Finure I is a frontal view of a window on the out-
— — side of which is mounted the light control system as per the inventio ;
Figure £ is a cutaway view as per the ft-ft Diane of ig- 1 ; Figure 3 shows in perspective one of the αuadran- gular-section glass bars;
Figure 4 shows in vertical sect on a portion of the screen made up of three bars such as that in Fig. 3;
Figure 5 is a view in perspective of a bar- accord- ing to a variation, which internally has numerous transpar¬ ent cross segments in order to increase refraction.
With reference to Figure 1, the adjustable device indicated in its entirety with (6) is composed of an in¬ clined panel mounted on a rigid frame (S), of a suitable rna- terial, for example aluminum, capable of varying its verti¬ cal orientation with respect to a frame (10) which is fas¬ tened outside of the window using known technologies. The inclination set at the moment of installation will cor¬ respond to the maximum reflective yield of the direct sun- light at noon at the various latitudes.
In order to compensate for the variations in the direction of the sunlight during the day and over the sea¬ sons, the reflecting surface (1£> of the panel, rather than be smooth, may be suitably treated so as to be rusticated or have, for example, a multitude of sernisphereε which increase the diffusion range, or even micromirrors.
Below the reflecting panel (6) is positioned the second element forming the natural light control system as per the invention. This is a diffusion screen (14) with a characteristic multi-chamber structure, sliding vertically and securable in various positions within the same frame (10) on which the reflecting panel (S) is mounted, or in ε. separate frame, also fastened outside the window parallel to its glass pane. ftε can be seen in Figures 3 and 4, the abovesaic: multi-chamber screen is made up of numerous αuadrangular- section hollow bars (16), perfectly transparent on three sides but with the lower horizontal surface (17), turned up¬ ward, sanded. The bars are placed one on another inside a containing frame (18) and are preferably made of glass.
In the event it should be desirable to increase the refraction of the screen (14), a type of bar such as that in Figure 5, with a series of cross segments (£0) , may be used. 5 Due to its particular form and to the treatment of the horizontal surfaces of the bars, the screen (14) re¬ fracts and reflects the sun rays, reducing both their heat and their intensity. Moreover, the propagation of the light takes place with a diffusion which is neither too soft, as
10 in the case of normal diffusers using milk or frosted glass, nor too harsh, as in the case of direct rays. ft further significant advantage of the screen de¬ scribed is that it always permits seeing outside, although avoiding all danger of dazzlerπent due to excessive bright-
15 ness of the windows.
This invention has been illustrated and described in two of its preferred forms of implementation, but it is intended that constructional and/or operational variations may be made by an expert in the field without, moreover, go-
20 ing beyond the range of protection of this industrial pat¬ ent. For example, the reflecting panel (6) may be directed automatically by means of an operational device controlled by a sensor capable of perceiving variations in the flow of 1ight.
£5