EP2366084A2

EP2366084A2 - Roof system having an arrangement of solar panels

Info

Publication number: EP2366084A2
Application number: EP09756131A
Authority: EP
Inventors: Christian Meier
Original assignee: Energiebuero AG
Current assignee: MONTAVENT AG
Priority date: 2008-11-14
Filing date: 2009-11-13
Publication date: 2011-09-21
Also published as: WO2010054496A3; WO2010054496A2; US20110314752A1; EP2187147A1

Abstract

In a roof system having an arrangement of solar panels, horizontally extending fastening profiles (2) are arranged between solar panels (1a, 1b) located next to one another. Each fastening profile (2) extends beneath the frame (3) of the respectively upper solar panel (1a) and over the frame (3) of the respectively lower solar panel (1b), and both the upper and the lower solar panels (1a, 1b) are fastened to the fastening profile (2). In this way, tile-like, tight laying is ensured by the fastening profiles (2), and the fastening profiles (2) at the same time are used for the installation of the solar panels (1a, 1b).

Description

Roof construction with an array of solar panels

TECHNICAL AREA

The invention relates to a roof structure with an array of solar panels.

The term "solar panels" is to be understood to mean plate-like components which are capable of converting solar radiation into other usable forms of energy, in particular electricity or heat, in particular photovoltaic solar modules (ie arrangements of photoelectric solar cells) and solar thermal collectors (ie, arrangements that convert the solar radiation into heat and heat a circulated liquid or gaseous medium of a thermal cycle).

PRIOR ART Generic arrangements serve to firmly anchor solar panels in a defined position on a building.

Preferably, such an arrangement should fulfill other functions on the building, for example, it should be laid brick-tight and so can take over the role of conventional brick. "Brick-proof installation" is understood to mean an arrangement of components in which outflowing water is taken under the lower end of a first component and directed onto the upper component of the component underneath, ie the water flows over the components like a tile roof ,

Devices of this type are known, for example, from US 4 336 413 and DE 33 37 658. However, the construction according to US Pat. No. 4,336,524 has the disadvantage that the modules must be held in a specially constructed frame, which contrasts with the construction in normal design. tallrahmen collected modules more expensive. On the other hand, in the solution according to DE 33 37 658, the solar modules overlap so much that, in the event of oblique solar radiation, shading of the lower solar modules can occur through the respective upper ones.

PRESENTATION OF THE INVENTION

Against this background, the task of providing an arrangement of the type mentioned above, which makes do with commercially available solar panels, in particular solar modules, with a metallic frame and yet allows a laying of the modules without danger of shading.

This object is achieved by the roof structure according to claim 1. Accordingly, a fastening profile is arranged in each case between solar panels arranged in first-eaves direction (that is to say in the direction of the roof of the roof). In this case, the fastening profile extends under the frame of each upper solar panel and the frame of the respective lower solar panel, and both the upper and the lower solar panel are attached to the mounting profile. In this way, therefore, the brick-tight installation is ensured by the fastening profiles by the water flows from the lower end of the respective upper solar panel on the mounting profile and from there to the top of the respective lower solar panel, and at the same time serve the mounting profiles of the mounting of the solar panels.

Preferably, at least one anchor is bolted to the underside of the frame at the lower edge of the respective upper solar panel, which is hooked into the fastening profile. This makes it possible to use the rear mounting holes provided on normal module frames, while still allowing mounting of the anchored modules "from the front", ie without the need for access from the underside of the roof. In another preferred embodiment of the roof structure according to the invention, the upper solar panel is fastened to the fastening profile by a holding device which engages over the eaves-side frame profile of the frame of the upper solar panel and thereby positively secures it against lifting off the fastening profile. The protection against slipping in the eaves direction can be taken over by the component of the holding device which extends over or around the frame profile and / or from separate components.

Advantageously, the holding device for over or encompassing of the frame profile on a clip made of a profile material or of wire, as can be produced derarti ^¬ ge components in large quantities at low cost.

Preferably, the clip engages in a horizontally extending, eaves open groove of the fastening profile and is there secured against eaves leakage, which preferably happens by the fact that the groove opens into a recess in the top of the fastening profile, in which a securing element, the clip positively secured against leakage from the groove. The securing ^element may be formed separately from ^¬ or be formed by the clip. Such a construction favors a simple and secure mounting of the holding device in particular when the securing element is formed of sheet metal or wire and is fastened by snapping, snapping and / or resilient clamping on the mounting profile, which is preferred.

It is further preferred that the securing element has a tab or a Aushebungsöffnung, by means of which it can be dismantled nondestructively by pulling on the tab or insertion of a lever tool in the Aushebungsöff-. Advantageously, the securing element is formed so that it additionally secures the clip positively against displacement along the profile direction of the fastening profile. If the clip and the securing element are formed separately, it is advantageous that they form a coherent unit before assembly, which is preferably done by being locked together. As a result, the assembly is significantly simplified.

Preferably, the holding device has at least one support element, which is arranged between the upper side of the fastening profile and the underside of the eaves-side frame profile of the upper solar panel and serves to secure this solar panel against slipping in the eaves direction. For this purpose, the support profile on the one hand by intervening in, overlapping and / or embracing profile sections of the fastening profile positively in the eaves direction and also advantageously positively secured in firing direction on the mounting profile and forms the other in the eaves direction a stop for the eaves-side frame profile of the top solar panels.

If the support element is fastened to the fastening profile by snapping, latching and / or resilient clamping, this results in advantages during assembly.

If the support element consists of a profile material, of folded sheet metal material or of wire or if this comprises a base body of such a material, which is preferred, then there is the advantage that suitable support elements can be produced inexpensively in large quantities.

Further, it is advantageous if the support element is secured in a form-fitting manner by the clamp of the holding device against displacement along the profile direction of the fastening profile. hereby Separation of clip and associated support element can be reliably prevented.

In yet another preferred embodiment of the roof structure according to the invention, the upper side of the fastening profile extends starting from a eaves-side boundary edge, which is formed by a profile section of the fastening profile which engages over the frame of the lower solar panel, ascending in the firing direction and without interruption until behind a first-side boundary edge of the underside eaves-side frame profile of the upper solar panel. In this way, it can be ensured that any water emerging from the frame profile is discharged to the lower solar panel and does not reach the roof or lower roof.

At its first end, the respective lower solar panel is preferably encompassed by at least one holding device, which is at least partially formed by the fastening profile. This simplifies assembly by the solar panel can be inserted in a simple manner from the eaves side direction in this fixture.

The structure can be mounted directly on the roof or under the roof. For this purpose, a foot for attachment to this roof or sub-roof can be arranged on the mounting profile.

BRIEF DESCRIPTION OF THE DRAWINGS

Further preferred embodiments will become apparent from the dependent claims and from the following description with reference to FIGS. Showing:

1 shows a first embodiment of the roof structure according to the invention with an arrangement of a plurality of solar modules; 2 shows a section through the ends of two adjacent solar modules of the roof structure of Figure 1 with intervening attachment profile. FIG. 3 shows a section as in FIG. 2 through a second embodiment according to the invention of the roof structure according to the invention with an arrangement of a plurality of solar modules; FIG. and

Fig. 4 is a plan view of the region shown in Fig. 3 in section of the roof structure.

WAYS OF CARRYING OUT THE INVENTION Before one embodiment is described in detail, the following terms are used to simplify the notation:

By "ridge-side" is meant the direction facing the roof ridge, that is, the direction along the falling line of the roof upwards.

The term "eaves side" is understood to mean the direction facing the eaves of the roof, ie, it is the direction along the fall line of the roof downwards The arrangement shown in FIG. 1 comprises a plurality of solar modules 1 with fastening profiles 2. The structure of the modules Fixing profiles can be seen in detail from Fig. 2.

Each solar module 1 has a frame 3 extending around the module made of a metal ^profile which holds a front plate 4 of transparent material. In the interior of the module photovoltaic cells are arranged in a known manner (not shown). The solar modules are commercially available models that need not be specially adapted to the inventive installation.

As can be seen from FIG. 1, the ^arrangement comprises several solar modules 1, which are arranged in columns in horizontal rows and along the fall line of the roof. Between the horizontal rows extend in the horizontal direction, the mounting profiles 2, so that in First-eaves direction adjacent Solar modules are each connected via a mounting profile 2.

When fastening profile 2 is preferably a profile element made of metal, whose cross section remains unchanged over its entire length. It has a length substantially greater than the width of the solar modules, so that it extends over a plurality of horizontally adjacent solar modules.

As can be seen from FIG. 1, the solar modules 1 adjacent to one another in the direction of the roof of the roof do not overlap, so that a shadow can be largely avoided in the case of oblique solar radiation. The resulting gap between the solar modules is covered by the mounting profile 2. The design of the fastening profile can be seen from FIG. 2, which shows the profile between an upper, ridge-side module Ia and a lower, side-facing module Ib.

In a ridge-side region, the fastening profile extends under the upper solar module Ia and is fastened to the frame 3 from below. The top of the upper solar module Ia is not covered by the mounting profile 2 and is exposed, so that water can drain well. For fixing the fastening profile 2 to the upper solar module Ia, an armature is provided, which is formed by a step profile 5. The step profile 5 has an upper flat portion 5a and a lower flat portion 5b, which are connected via a step 5c. The upper portion 5a is fastened to the frame 3 of the upper solar module 1a with a screw 6 (or eg rivet). This fastening method has the advantage that the fastening holes provided in normal solar modules in the frame can be used for fastening the modules, so that a fastening that conforms to the installation instructions of the modules can be achieved. The lower end of the anchor or step profile

5 engages in a groove 7 of the fastening profile 2 and holds the lower end of the upper solar module Ia in this way against train in the normal direction to the roof. In the horizontal direction, the anchors 5 are substantially shorter than the width of the solar modules 1 and have a length of e.g. 10 centimeters. As a rule, two separate armatures 5 are provided per solar module 1, but the use of only one armature 5 is also conceivable. On the other hand, the groove 7 extends over the entire length of the fastening profile 2, so that no particular lateral alignment of the solar modules 1 is required on the battens of the roof and the solar modules can be placed anywhere along the mounting profile 2 can.

The groove 7 extends horizontally and is open on the first side, so that the solar modules can be mounted in the manner described below. It opens into a depression 8 on the upper side of the fastening profile 2, which space for the head of the screw

6 and for insertion of the armature 5 creates in the groove 7, but at the same time prevents a ÜberfHessen of water with a ridge-side increase 8a.

A eaves-side arm 9 of the fastening profile 2 is located from above via an elastic pressure element 10 on the lower solar module Ib. The arm 9 serves to derive via the eaves-side edge 11 of the upper solar module Ia effluent water on the top of the lower solar module 1. The ridge-side end of the lower solar module

Ib is encompassed by a holding device 12. In the present example, the holding device 12 is designed in two parts, so that it can be adapted to the (non-normalized) thickness of the solar modules. It consists on the one hand of the already mentioned arm 9 of the fastening profile and the pressure element 10, and on the other hand of a support profile 14. The support profile 14 has a NEN approximately parallel to the roof surface extending lower leg 15, which supports the lower solar module Ib from below. It is held by the fastening profile 2.

The length of the support profile 14 in the horizontal direction is preferably substantially shorter than the width of the solar modules. Pro Solarrαodul least two support profiles 14 are provided in the rule, but is basically also conceivable to use a single tra ^¬ gen edition section 14. This support profile 14 can also be mounted so that, for example, the eaves connection is ensured to conventional roofing materials. Thus, the arrangement can be integrated into a conventional roof ^¬ system. So that the holding device 12 can be adapted to different thicknesses of solar modules, each support profile can be fastened in several different heights or positions on the fastening profile 2. For this purpose, the support profile 14 a shaft 16 which engages in a downwardly open recess 17 in the mounting profile 2 and at least one, preferably two, toothed surfaces 18a and 18b with corresponding toothed surfaces 19a, 19b of the mounting profile 2 is connected. In the present embodiment, a first toothed surface 18a of the support profile 14 is located on the eaves side at the upper end of the shaft 16 and engages in a first, ridge-sided, toothed surface 19a of the fastening profile 2. On the side opposite the first toothed surface 18a, an elastic tensioning element 20 is arranged between the shaft 16 and the fastening profile 2, which presses the two first toothed surfaces 18a, 19a against each other and thus improves the support. Furthermore, in the embodiment shown, a second toothed surface 18b is provided on the ridge 16 on the ridge side, which ridge is inserted into a corresponding second toothed surface 18b. tooth surface 19b of the fastening profile 2 engages.

On the attachment profile 2 there is further arranged a foot in the form of a sheet 22 (or also, for example, a drawn aluminum profile), which in turn is fixed to the roof or sub-roof, e.g. attached to the counter battens. For this purpose, the fastening profile 2 has two lugs 23a, 23b, which engage in corresponding recesses 24a, 24b of the foot. In addition, a laterally retractable Sicherungsbϋgel 25 is provided which secures the mounting profile in the foot.

The assembly of the assembly is simple and includes the following steps:

First, the mounting rails 2 are attached via the feet or sheets 22 on the roof or roof. Then, at suitable intervals (eg at intervals corresponding to the width of the solar modules 1), the support profiles 14 are fastened to the fastening rails 2, in each case in such a vertical position that the distance between the leg 15 and the underside of the arm 9 is approximately the thickness of the solar module 1 corresponds.

Next, the anchor 5 are attached to the solar modules. Now, each solar module can be mounted by first its upper edge is inserted into one of the brackets 12, where it is held by the elastic effect of the pressure element 10 without play. Then, the lower edge of the solar module is pivoted so far down that the lower portion 5b comes to lie in the recess 8 of the mounting profile 2. Thereafter, the lower portion 5b may be inserted into the groove 7 along the falling line of the roof with a slight sliding movement of the solar module, thereby securing the solar module.

In order to prevent water from flowing through the joints extending in the direction of the fall between two adjoining To prevent solar modules, vertically extending profile channels 28 can be arranged below these joints, as indicated in Fig. 1.

In addition, at the end of the fastening profiles sealing plates, e.g. made of plastic, are attached, which prevent lateral drainage of water from the recess 8. The outline of such a sealing plate is shown in Fig. 2 with a dashed line 30. To a falling out of the support profile 14 before

Mounting of the solar module 1, this can, as indicated in Fig. 2 with dashed lines, with an elastic support member 29, e.g. a band spring, leaf spring or spiral spring, be pulled against the fastening profile 2. Preferably, the holding member 29 engages the lower leg 15 and exerts on this a substantially ridge-directed force.

The arrangement described is suitable for mounting on pitched roofs and on arched roofs. When mounting on arched roofs, the angle between the shaft 16 and the leg 15 of the support profile of the respective curvature can be adjusted or the upper side of the leg 15 by inserting obliquely arranged plates or wedge elements an angle equal to 90% relative to the shaft 16 mediated. In addition, as shown in Fig. 2, the foot 22 are made in two parts, wherein the upper part 22 a, which holds the mounting rail 2, with respect to the lower part 22 b, which rests on the roof, can be tilted, so that the angle of the Fixing rail 2 and the step profile 5 of the position of the upper solar panel can be adjusted. For this purpose, for example, a connection of the parts 22a, 22b may be provided via slots 32, as indicated in Fig. 2. The structure of a second embodiment of the roof construction according to the invention can be seen in FIGS. 3 and 4, FIG. 3 showing a section through the roof structure of FIG. 4 shows a plan view of the area of the roof structure shown in section in FIG. 3, but without solar modules. FIG.

The structure and the type of arrangement of the solar larmodule Ia, Ib is the same as in the execution form according to Figures 1 and 2, for which reason it is not discussed here ^¬ neut.

As is apparent from Fig. 3, this embodiment has a fastening profile 2 made of aluminum, which between a lower leg 15 which extends substantially parallel to the roof surface and the lower solar module Ib is supported from below, and an upper profile arm 9, which the frame. 3 of the lower solar module Ib, forms a holding device 12 with a fixed receiving width for the ridge-side end of the lower So ^¬ larmoduls Ib. As a variant, it is provided to form the holding device 12 as shown in the first embodiment in Fig. 2, so that it can be adapted to different thicknesses of solar modules. As can be seen further, the upper lies

Solar module Ia with its frame 3 on a support profile piece 38, which in turn rests on the top of a ridge-side profile portion 39 of the mounting profile 2 and this profile section 39 ridge-engages around so that the support profile piece 38 in the eaves, ie in the direction of the roof, positive fit is attached to the mounting profile 2. At its eaves-side end, the support profile piece 38 forms on its upper side a stop 40 for the eaves-side frame profile of the upper solar module Ia and thereby secures it in a form-fitting manner against slipping in the eave direction. On the underside of its eaves-side end bearing profile piece 38 has a projection 34 which engages over the eaves-side boundary edge of the ridge-side Profilab- section 39 of the mounting profile 2 and thereby secures the support profile piece 38 positively against displacement in Firstrichtung. The section of the Bearing profile piece 38 which ridge ^{¬ first} attacks the first-side profile portion 39 of the mounting profile 2, is formed in its lower region with respect to its material thickness significantly thinner than the remaining areas of the support profile piece 38. In this way, an elastic region is formed, which makes it possible in the Mounting the support profile piece 38 from the ridge side on the ridge-side profile portion 39 of the mounting profile 2 to push until the projection 34 behind the eaves boundary edge of the ridge-side profile portion 39 engages.

As can also be seen, the eaves-side frame profile of the upper solar module Ia is overlapped by a bracket 33 made of an aluminum profile material, which engages in a horizontally extending, groove side open groove 35 of the mounting profile 2 and the eaves-side end of the upper solar module Ia thereby secures against lifting of the support profile piece 38 and thus against lifting of the mounting profile 2. The groove 35 opens into a recess 36 in the upper side of the fastening profile 2, in which a locking plate 37 made of stainless spring steel is arranged, which secures the clamp 33 in a form-fitting manner against a eaves-side escape from the groove 35. The locking plate 37 has a La see 46, by means of which it can be dismantled by pulling up on the tab 46 and subsequent eaves-side extension together with the bracket 33 from the groove 35 again.

As can be seen, in this second exemplary embodiment of the roof structure according to the invention, the thrust forces in eave direction, i. in the direction of the roof, exclusively transmitted via the support profile piece 38 on the mounting profile 2. The bracket 33 serves only as a safeguard against lifting of the solar module Ia.

As can be seen from FIG. 4, which shows a plan view of the fastening device shown in FIG. Situation without solar modules shows embrace the Siche ^¬ tion plate 37 and the support member 38, the clip 33 such that a separation of the 33 formed by these components 33, 37, 38 claim 33, 37, 38 by moving them along the profile direction of the mounting profile 2 not is possible. In the present case, the clamping of the securing plate 37 in the recess 36 is designed such that it reliably prevents a displacement of the holding device 33, 37, 38 along the profile direction of the fastening profile 2 during normal operation.

The attachment of the fastening profile 2 on a roof surface, which is not shown here, can be done as set forth in the first embodiment and therefore need not be explained again at this point.

The assembly of a solar module is briefly described below using the example of the upper solar module Ia. After, as already described in the first embodiment, the mounting rails 2 have been mounted on the roof or sub-roof, the Auflagepro- filstück 38 is pushed onto the ridge-side profile portion 39 of the illustrated fastening profile 2 from the ridge side until the projection 34 behind the eaves side Bordering edge of the ridge-side profile section 39 locked. Then, the solar module Ia with its upper, i. the first side edge is inserted into the holding device 12 of the fastening profile arranged in the firing direction above the fastening profile 2 shown, and the solar module 1a is subsequently placed with its eaves-side frame profile on the support profile piece 38 such that it is in the eaves direction at the two stops 40 of the support profile piece 38. lies.

Then, the bracket 33 and the locking plate 37, which preferably already in the Manufacture were joined together to form a coherent unit by the locking plate 37 has been latched to the bracket 33 with two clips 33 the nose 33, inserted from the eaves side into the eaves open groove 35 of the mounting profile 2 until the locking plate 37 with its eaves boundary edge 42 engages in the recess 36 in the top of the mounting profile 2. In this state, the bracket 33 overlaps the eaves-side frame profile of the solar module Ia and is positively secured in the eaves direction on the first-side boundary edge 43 of the locking plate 37, which is supported with its eaves boundary edge 42 on the eaves-side boundary of the recess 36, in the groove 35. As can be seen in particular from FIG. 4, the securing plate 37, produced by punching, downwardly projecting spring tongues 44 and upwardly projecting spring tongues 45, which serve to keep the locking plate 37 without play in the groove 35 and in the depression 36 while pressing the clip 33 against the upper boundary of the groove 35.

While preferred embodiments of the invention are described in the present application, it should be clearly understood that the invention is not limited to these and may be practiced otherwise within the scope of the following claims. In particular, it should be noted that the invention is not limited to the applications for photoelectric applications shown in the embodiments, but can also be used for mounting solar thermal collectors.

Claims

1. roof structure with an array of solar panels (1, Ia, Ib), in particular photoelectric solar modules or solar thermal collectors, in brick-tight installation, each solar panel (1, Ia, Ib) is taken in a metallic frame (3), characterized in that in each case a fastening profile (2) is arranged between solar panels (1 a, 1 b) lying next to each other in the first-eaves direction, wherein the fastening profile (2) extends beneath the frames (3) of the respective upper solar panel (Ia ) and over the frame (3) of the respective lower solar panel (Ib), wherein the upper and the lower solar panel (Ia, Ib) are fastened to the fastening profile (2).

2. Roof construction according to claim 1, wherein the fastening profile (2) from below on the frame (3) of the upper solar panel (Ia) is attached.

3. roof structure according to one of the preceding

Claims, wherein on the underside of the frame (3) of the upper solar panel (Ia) at least one anchor (5) attached, in particular screwed or riveted, which is mounted in the fastening profile (2).

4. roof structure according to claim 3, wherein the armature (5) engages in a horizontally extending, ridge-side open groove (7) of the fastening profile (2).

5. Roof construction according to claim 4, wherein the groove (7) in a recess (8) on the upper side of the fastening profile proffered (2).

6. A roof structure according to any one of claims 3 to 5, wherein the armature (5) is a stepped profile having an upper and a lower flat portion (5a, 5b), wherein the portions via a step (5c) are connected, wherein the upper portion from below the frame (3) of the upper solar panel (Ia) is held, in particular of a Screw (6) or rivet, and the lower section engages in the mounting profile (2).

7. roof structure according to one of claims 3 to 6, wherein per solar panel at least one separate armature (5) is provided, and in particular wherein each solar panel at least two separate armature (5) are provided.

8. roof structure according to claim 1, wherein the upper solar panel (Ia) with at least one eave-side frame profile of the frame (3) of the upper solar panel (Ia) cross-holding device (33, 37, 38) is attached to the mounting profile.

9. roof structure according to claim 8, wherein the holding device (33, 37, 38) engages around the eaves-side frame profile of the upper solar panel (Ia).

10. Roof construction according to one of claims 8 to

9, wherein the holding device (33, 37, 38) comprises a clip made of a profile material (33) or of wire, which engages over or embraces the eaves-side frame profile of the frame (3) of the upper solar panel (Ia).

11. Roof construction according to claim 10, wherein the

Clamp (33) in a horizontally extending, eaves open groove (35) of the fastening profile (2) engages.

12. Roof construction according to claim 11, wherein the groove (35) in a recess (36) in the upper side of the fastening profile (2) opens, in which a securing element (37) is arranged, which the clip (33) against a form fit Escaping from the groove (35) secures.

13. Roof construction according to claim 12, wherein the securing element (37) is formed from sheet metal or wire and is fixed by snapping, snapping and / or resilient clamping on the fastening profile (2).

14. A roof assembly according to claim 13, wherein the securing element comprises a tab (46) or a Aushebungsöffnung, by means of which it can be dismantled without damage by pulling on the tab (46) or insertion of a lever tool in the Aushebungsöffnung.

15. Roof construction according to one of claims 12 to 14, wherein the securing element (37) the clip (33) positively against displacement along the profile direction of the fastening profile (2) ensures.

16. Roof construction according to one of claims 8 to

15, wherein the holding device (33, 37, 38) at least one between the upper side of the fastening profile (2) and the underside of the eaves-side frame profile of the frame. (3) of the upper solar panel (Ia) arranged supporting element (38), which by intervention in,

Spreading over and / or embracing profile sections of the fastening profile (2) in the eaves direction positively on the mounting profile (2) is fixed and eaves a stop (40) for the eaves-side frame profile of the upper solar panel (Ia) forms, for positive securing of this solar panel (Ia) against slipping in eaves direction.

17. A roof structure according to claim 16, wherein the support element (38) is formed from a profile material, from gekan- tetem sheet material or wire or comprises such material.

18. A roof structure according to claim 17, wherein the support element (38) by engagement in, spreading and / or encompassing profile sections of the fastening profile (2) in the firing direction is positively secured to the mounting profile (2).

19. A roof structure according to any one of claims 16 to 18, wherein the support element (38) by snapping, snapping and / or resilient clamping on the fastening profile (2) is attached.

20. Roof construction according to claim 10 and according to one of claims 16 to 19, wherein the support element

(38) is positively secured by the clip (33) against displacement along the profile direction of the Befestigungspro- fils (2), in particular by the fact that it surrounds the clamp (33).

21. Roof construction according to one of the preceding claims, wherein the fastening profile (2) via an elastic pressure element (10) from above on the lower solar panel (Ib) rests.

22. Roof construction according to one of the preceding

Claims, wherein a ridge-side end of the lower solar panel (Ib) is encompassed by at least one holding device (12), wherein the holding device is at least partially formed by the fastening profile (2).

23. A roof assembly according to claim 22, wherein the

Holding device (12) has a lower leg (15) which supports the lower solar panel (Ib) from below.

24. A roof structure according to claim 23, wherein the lower leg (15) of a support profile (14) is formed, which is held by the fastening profile (2).

25. A roof structure according to claim 24, wherein the support profile (14) in several positions on the fastening profile (2) can be fastened to accommodate solar panels of different thickness.

26. Roof construction according to claim 25, wherein a shaft (16) of the support profile (14) in a recess (17) engages in the mounting profile (2) and Minim ^¬ least a toothed surface (18a, 18b, 19a, 19b) veran- kert is, and in particular wherein on one side opposite to one of the toothed surfaces between the shaft (16) and the fastening profile (2), an elastic tensioning element (20) is arranged.

27. A roof structure according to any one of claims 24 to 26, wherein the support profile (14) is pulled with an elastic retaining member (29) against the fastening profile (2), and in particular wherein the retaining member (29) on the lower leg (15) engages and on this exerts a substantially ridge-directed force.

28. Roof construction according to one of the preceding

Claims, wherein on the fastening profile (2) a foot (22) is arranged for attachment to a roof or sub-roof.

29. Roof construction according to one of the preceding claims, wherein the upper and the lower solar panel (Ia, Ib) do not overlap and a thereby resulting

Gap between the solar panels (1) from the mounting profile (2) is covered.

30. roof structure according to claim 29, wherein the top of the fastening profile (2), starting from a eaves boundary edge, which is formed by a frame of the lower solar panel (Ib) cross profile section (9) of the fastening profile (2), rising in firing direction and without interruption to behind a first-side boundary edge of the bottom of a eaves-side frame profile of the frame (3) of the upper solar panel (Ia) extends, for the derivation of any emerging from the frame profile water to the lower solar panel (Ib).