Light band

Abstract

A light strip (1) which is constructed from a profile set made of extruded metal and / or plastic profiles and two curved plastic hollow chamber light panels (2, 2'), wherein the profile set consists of support profiles (5), mullion profiles, plastic hollow chamber light panels (2, 2') and their clamping angles (3, 3'), wherein the support profiles (5) can be mounted on a building (4) from the outside and an intermediate space (8) between the plastic hollow chamber light panels (2, 2') is sealed dust-tight, characterized in that a curtain (11) is provided in the intermediate space (8) which can be wound up and unwound by a winding shaft (12), and the curtain (11) rests essentially on the lower plastic hollow chamber light panel (2).

Description

[0001] The invention relates to a skylight. This skylight comprises a set of profiles made of extruded metal and / or plastic profiles for the production of skylights on buildings with two plastic hollow chamber light panels, consisting of support profiles, mullion profiles, plastic hollow chamber light panels and their clamping angles.

[0002] These types of skylights or rooflights are either incorporated into the initial building design or can be retrofitted. The profiles are made of materials such as extruded aluminum or extruded plastic. The hollow-chamber plastic panels are preferably made of polycarbonate, such as acrylic glass or Plexiglas, and are typically 10 mm or 16 mm thick.

[0003] Such profile sets are known from DE 92 11 241 U1 or from DE 298 09 917 U1.

[0004] To improve thermal insulation, it is desirable to design the profiles so that at least two multi-wall polycarbonate sheets can be stacked on top of each other. However, a disadvantage of the known profile sets is that, firstly, the ingress of contaminants such as dust or similar substances between the multi-wall polycarbonate sheets is practically unavoidable, and secondly, subsequent installation on the exterior of a building is practically impossible, since, for example, the support profiles must be attached from the inside of an exterior wall. Therefore, the effort involved in retrofitting an existing building with such a skylight is significantly increased.

[0005] Furthermore, a disadvantage of the known profile sets is that shading of a building interior is not possible. For vertical windows, it is known from DE 30 42 041 A1 to arrange a roller blind or a louvered blind in the space between two multi-wall sheets of a window shutter.

[0006] Based on this state of the art, the expert is faced with the task of specifying a light strip with a profile set of the type mentioned above, which enables the simple assembly of a light strip and allows a curtain to be guided along a curved surface of the plastic hollow chamber light panel when winding and unwinding.

[0007] According to the invention, the problem is solved by the features of claim 1.

[0008] To create a skylight at a building opening, a set of profiles made of extruded metal and / or plastic profiles is designed such that the support profiles, in particular, can always be mounted to the building from the outside. The attachment of the support profiles to the building itself can be designed by a specialist in virtually any way, but preferably as described below. For example, extruded aluminum support profiles can be equipped with corresponding holes and screwed to the exterior of a building. Two clamping brackets, e.g., also extruded aluminum profiles, can then be screwed to the support profiles, with each clamping bracket serving to hold a plastic multi-wall polycarbonate skylight panel.The support profiles and associated clamping brackets can essentially form a continuous perimeter around a plastic multi-wall polycarbonate sheet, for example, four profiles for a rectangular sheet. Additionally, a lateral seal is provided to prevent the ingress of dust, dirt, and the like into the interior or between the two plastic multi-wall polycarbonate sheets. It is understood that such a seal preferably runs continuously around the edge of a light strip. For example, such a seal can be formed by an essentially plate-shaped profile, which may optionally be equipped with further sealant to seal against the space between the two plastic multi-wall polycarbonate sheets or against the building's exterior wall.For example, four profiles can be arranged along the sides of a rectangular panel, which are of course also sealed against each other in the corner areas to create a dirt-free gap. Furthermore, the hollow-chamber plastic light panels are held by the profiles in such a way that the ingress of dirt into the interior is prevented.

[0009] The invention also includes the use of other translucent elements such as solid plastic or glass panels. The lateral seal can, for example, be integrally molded onto a support profile or another clamping bracket.

[0010] The advantage of the invention lies in the fact that, with a minor modification of the profile set, the support profile can be mounted to a building from the outside, thus eliminating the need for additional wall penetrations. Furthermore, mounting from the outside allows normal production to continue, for example, in a production hall. In addition, maintenance is significantly reduced due to the dustproof design, as the interior of a skylight no longer requires extensive cleaning. In principle, it is also possible to create negative pressure inside the skylight to further improve its thermal insulation properties.

[0011] Advantageous embodiments of the inventions are the subject of dependent claims.

[0012] It is understood that such a skylight with two plastic multi-wall polycarbonate sheets is preferably designed to have low thermal conductivity of approximately 1 watt per square meter and Kelvin (W / m²K), as well as sufficient sound insulation and stability to withstand heavy snow loads. A person skilled in the art can design the plastic multi-wall polycarbonate sheets to be so robust that even severe hailstorms, particularly the outer sheet, will not be damaged. For this purpose, the outer plastic multi-wall polycarbonate sheets can be, for example, 16 or 20 mm thick, and the inner plastic multi-wall polycarbonate sheet 5 or 10 mm thick, both preferably made of polycarbonate or Plexiglas. The gap between the two plastic multi-wall polycarbonate sheets is, for example, 25 mm or 40 mm, and the sound insulation is, for example, in the range of 23 dB to 31 dB.Naturally, the necessary fire protection classes are also met, such as fire class B2 or B1 or fire spread protection according to DIN 18234-4:2003-09.

[0013] Preferably, the plastic multi-wall polycarbonate sheets are each clamped with clamping brackets, wherein the clamping brackets are in turn attached to the profiles of the profile set, or a profile is designed, at least in sections, to clamp a plastic multi-wall polycarbonate sheet. It is understood that an additional layer of material, such as a thin plastic or glass fleece, may be inserted between the clamping brackets and the plastic multi-wall polycarbonate sheets to prevent scratching of the plastic multi-wall polycarbonate sheets.

[0014] To improve thermal insulation and prevent the ingress of dirt, a seal is placed between the support profile and the outer surface of a building wall, for example, a rubber or foam seal, or other sealants commonly used in building technology. A rubber seal, for instance, can be wedged in place when the support profile is screwed down to achieve a permanent seal.

[0015] Either the clamping brackets are designed as a separate component, which are screwed onto a profile, for example, or they are formed as one piece with a profile.

[0016] All components of the profile set are simply screwed together to allow for easy assembly and, for example, disassembly for maintenance purposes. Screwing the support profile to the building itself is also suggested. However, other fastening methods such as clamps, snap-fit ​​connections, or similar are also possible.

[0017] Additionally, extra thermal insulation can be provided around the sides of the light strip, for example in the form of PU insulation or a melamine thermal insulation element.

[0018] To shape the profile set or the resulting skylight band, the plastic hollow chamber light panels are each curved to create a curved skylight band.

[0019] Finally, the profile sets can be equipped with additional fasteners or mounting options for photovoltaic modules, for example, to easily arrange and attach additional photovoltaic modules for energy generation between two adjacent skylights on a flat roof. This can be done, for example, in the form of screw holes or similar features.

[0020] To shade a building interior, a movable or retractable curtain is provided in the space between the two plastic hollow-chamber light panels. This curtain can be wound and unwound by a winding shaft. Such a winding shaft, preferably tubular and made of aluminum, serves to wind and unwind a flat textile or film material, preferably made of a light-resistant plastic. The curtain can then be unwound from the winding shaft, particularly by an electric motor, to shade or darken the interior of the building by drawing the curtain forward. It is particularly proposed that, in the case of a tubular winding shaft, an electric motor drive in the form of a known tubular motor, for example with an operating voltage of 24 volts, be used.

[0021] The blind is positioned internally between the two plastic hollow chamber light panels in such a way that it rests against the lower panel during winding and unwinding. This eliminates the need for additional side guide rails, tracks, or other guiding devices, as the blind rests on the lower panel and can be pulled off the winding shaft using only two cords or ropes at its two front corners. Naturally, the blind material is selected to be compatible with the plastic hollow chamber light panel material to minimize scratching. Furthermore, the blind material can be chosen to achieve either virtually complete blackout or coverage of the window area, or to allow some residual light of the desired intensity to pass through, thus providing only partial shading.

[0022] It is further proposed that the blind be equipped with a counter-tensioning system. This system can be designed, for example, such that when the electric motor, such as the tubular motor in the winding shaft, is de-energized, it can be subjected to a spring force to automatically rewind the blind. For this purpose, the blind can be designed such that, as a counterpart to the winding shaft, a rod parallel to the shaft is arranged in the space 30 between the hollow plastic light panels. This rod is equipped with two rollers on either side. Alternatively, an electric motor drive can be assigned to the rod. In this case, the motor winds the blind or roller blind up, and the counter-tensioning system retracts the blind when the motor is switched off.

[0023] This design, featuring a movable curtain positioned in the sealed cavity to protect against dirt, dust, or other external influences, is used for curved skylights, such as those arranged in a circular arc on the roof of a factory building. The curtain is always opened and closed over the lower, curved or bent hollow-chamber plastic skylight panel.

[0024] It is understood that the scope of protection of the invention includes not only a profile set for the production of a skylight, but also a finished skylight produced using a profile set according to the invention and intended to be mounted in one piece on a building.

[0025] In principle, the profile set could also be designed in such a way that, for example, three or more plastic multi-wall polycarbonate sheets can be mounted. For this purpose, a support profile can be designed at a height that allows, for example, three clamping brackets for spaced-out plastic multi-wall polycarbonate sheets to be attached to it.

[0026] The invention is explained in more detail below with reference to exemplary embodiments and the accompanying drawings. These show: Fig. 1: a set of profiles with curtains.

[0027] In the Fig. Figure 1 shows a partial cross-sectional view of a light strip 1 comprising two plastic hollow chamber light panels 2, 2' spaced apart from each other by a gap 8. The plastic hollow chamber light panels 2, 2' are each held and / or clamped by clamping brackets 3, 3'. The clamping brackets 3, 3' are each designed as a separate component or integrally formed with another component of a profile set.

[0028] A support profile 5 is used to attach the light strip 1 to the exterior of a building 4 or structure. This support profile is, for example, screwed to the building 4 with several screws 6. Additionally, a seal 7 can be positioned between the support profile 5 and the building 4 and clamped in place by tightening the screw 6. The other components of the profile set or the complete light strip 1 can also be connected to each other using screws 6.

[0029] The light band 1 or the profile set for producing a light band 1 is designed in such a way that an outer, edge-side seal is formed around the light band 1, which essentially runs continuously around the light band 1 and prevents the ingress of dust or dirt into the space 8 between the two plastic hollow chamber light panels 2, 2'.

[0030] The clamping bracket 3' is designed such that it essentially completely surrounds the entire light strip 1 on the outside and is sealed against the building 4 with an additional seal. With this design, additional thermal insulation 9 made of a suitable insulating material, such as PU foam, can also be provided. The clamping bracket 3 for the lower plastic hollow chamber light panel 2 is designed as a separate component, as is the clamping bracket 3' for the upper plastic hollow chamber light panel 2'.

[0031] It is understood that additional mullion profiles may be provided in a manner known per se, as well as further fastening means, e.g., in the form of screw holes or the like, in order to, among other things, attach photovoltaic modules between two adjacent skylights 1 on a flat roof. The skylight 1 is essentially curved.

[0032] The illustration described above shows sound and heat insulation. If an existing soundproof skylight needs to be retrofitted, it can be extended or converted into a heat-insulating skylight at any time by replacing the clamping brackets with integrated thermal insulation 9. The effort involved is minimal compared to installing a new skylight 1. The existing skylight 1 does not need to be dismantled. The building on which the skylight 1 is located can be used without restriction during the conversion, as only components in the area of ​​the clamping brackets 3 are replaced. This minor modification transforms a soundproof skylight into a skylight 1 with heat insulation.

[0033] In Fig.Figure 1 shows an embodiment with an additional covering 11, which can be wound and unwound by a winding shaft 12, for example, a metal or plastic tube, as indicated by the double arrow W. The covering 11 is designed as a film or as a woven or knitted textile, preferably a light-resistant plastic. Due to its arrangement in the sealed space 8 between the two plastic hollow chamber light panels 2, 2', no dirt or other external influences can affect the covering 11, thus ensuring a long service life. In the case of a curved or bent design of the two plastic hollow chamber light panels 2, 2' to form a curved light band 1, the covering 11 or the winding shaft 12 is arranged in the space 8 such that, during winding and unwinding W, the covering 11 is moved back and forth on the lower plastic hollow chamber light panel 2.Therefore, no additional lateral guide rails, guide grooves or other bearing devices are necessary for the curtain 11, so that the mechanical construction of a shading device for a building interior is significantly simplified.

[0034] The winding shaft 12 can also be designed as a tubular motor and / or a counter-pull system is preferably assigned to the curtain 11 by means of spring force in order to wind and unwind the curtain 11 to a rotatable rod with rollers opposite the winding shaft 12, over which ropes run. REFERENCE MARK LIST 1 light strip 2 plastic hollow chamber light panels 3 clamping brackets 4 buildings 5 support profile 6 screws 7 Seal 8 spaces 9 Thermal insulation 11 Curtain 12 winding shaft W Winding and unwinding

Claims

[1] A skylight (1) which is constructed from a set of profiles made of extruded metal and / or plastic profiles and two curved plastic hollow chamber light panels (2, 2'), wherein the set of profiles consists of support profiles (5), mullion profiles, plastic hollow chamber light panels (2, 2') and their clamping angles (3, 3'), wherein the support profiles (5) can be mounted on the outside of a building (4) and an intermediate space (8) between the plastic hollow chamber light panels (2, 2') is sealed dust-tight, characterized by , that in the space (8) a curtain (11) is provided which can be wound up and unwound by a winding shaft (12), and the curtain (11) essentially rests on the lower plastic hollow chamber light panel (2) in a sliding manner. [2] Light strip (1) according to claim 1, characterized by , that the plastic hollow chamber light panels (2, 2') are each clamped with clamping angles (3, 3'). [3] Light strip (1) according to claim 1 or 2, characterized by, that a seal (7) is arranged between the building (4) and the support profile (5). [4] Light strip (1) according to one of claims 1 to 3, characterized by , that the clamping angle(s) (3, 3') are designed as a separate component. [5] Light strip (1) according to any one of claims 1 to 4, characterized by , that lateral thermal insulation (9) is provided. [6] Light strip (1) according to any one of claims 1 to 5, characterized by that additional fastening means for photovoltaic modules or the like are provided on the profile set. [7] Light strip (1) according to any one of claims 1 to 6, characterized by , that the curtain (11) is assigned a counterweight system.

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