Vehicle roof element

Abstract

A vehicle roof element is specified, including a glass pane having an exterior side and an interior side, and a transparent sealing compound which is fastened to the glass pane on the inside, at least one LED and at least one electrical line by means of which the LED is adapted to be contacted being embedded in the sealing compound. The at least one LED and the at least one electrical line are arranged on a flexible foil to which the sealing compound is integrally injection-molded.

Claims

1. A vehicle roof element, including a glass pane having an exterior side and an interior side, and a transparent sealing compound which is fastened to the glass pane on the inside, at least one LED and at least one electrical line embedded in the sealing compound, the electrical line electrically contacting the LED, and the at least one LED and the at least one electrical line being arranged on a flexible foil, the sealing compound being an injection-molded part attached to the flexible foil by injection molding, wherein an agglomerate layer is arranged at least in regions on the glass pane and comprises agglomerates which are spaced apart from each other and are upwardly widened at least in sections, the agglomerate layer having an average gap width in the range of 3 to 500 nm due to the spaced apart agglomerates.

2. The vehicle roof element according to claim 1, wherein the glass pane is formed from a single-pane safety glass.

3. The vehicle roof element according to claim 1, wherein the sealing compound includes polyurethane.

4. The vehicle roof element according to claim 1, wherein the glass pane is rounded at its peripheral edges, the agglomerate layer extending up to the rounded region.

5. The vehicle roof element according to claim 1, wherein undercuts are formed in the agglomerate layer by the agglomerates, the sealing compound engaging the undercuts of the agglomerate layer.

6. The vehicle roof element according to claim 1, wherein the at least one LED directly adjoins or directly rests against the agglomerate layer.

7. The vehicle roof element according to claim 1, wherein the agglomerate layer is transparent.

8. The vehicle roof element according to claim 1, wherein the vehicle roof element has an integrally injection-molded or foamed circumferential frame along the edges of the glass pane.

9. The vehicle roof element according to claim 8, wherein an opaque cover layer is arranged between the glass pane and the agglomerate layer on the glass pane, in the region of the circumferential frame.

10. The vehicle roof element according to claim 9, wherein the cover layer comprises a glass ceramic or a paint coat.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Further features and advantages of the invention will become apparent from the description below and from the sole drawing below. The drawing shows a vehicle roof element according to the invention in a schematic partial sectional view.

DETAILED DESCRIPTION

(2) The vehicle roof element 10 includes a glass pane 12 having an exterior side 14 and an interior side 16, and a transparent sealing compound 18. The glass pane 12 is for example a single-pane safety glass, while the sealing compound 18 for example comprises polyurethane or is made of polyurethane.

(3) A plurality of LEDs 20 and electric lines 22 for contacting the LEDs 20 is embedded into the sealing compound 18.

(4) To simplify the handling of the LEDs 20 and the lines 22 during mounting, they can be prefixed onto a flexible foil 32. The sealing compound 18 is integrally injection-molded onto the foil 32, i.e. it is attached thereto by the bonding effect between an initial part and the part molded thereon.

(5) A transparent agglomerate layer 24 comprising agglomerates which are spaced apart from each other and widen at least in sections in a direction away from the glass pane is arranged at least in regions on the glass pane 12. Due to the spaced apart agglomerates, the agglomerate layer 24 has an average gap width in the range of 3 to 500 nm. The sealing compound 18 can flow into these gaps which are not represented in the FIGURE due to their small size. A particularly good adhesion between the glass pane 12 and the sealing compound 18 is in this way obtained. Undercuts are in particular formed in the agglomerate layer 24 by the agglomerates, the sealing compound 18 engaging the undercuts of the agglomerate layer 24. The LEDs directly rest against the agglomerate layer 24.

(6) The flexible foil onto which the LEDs 20 and the lines 22 are prefixed can contain recesses in the regions in which no lines 22 and no LEDs 20 are arranged. In the region of the recesses, the transparent sealing compound 18 can come into contact with the agglomerate layer 24 such that the adhesion between the glass pane 12 and the sealing compound 18 is not affected by the flexible foil.

(7) In an alternative embodiment, the flexible foil 32 may be free of recesses.

(8) As the LEDs are arranged merely in a relatively small region of the vehicle roof element 10 and the flexible foil 32 only extends across the region of the glass pane in which the LEDs 20 are also arranged, the adhesion between the glass pane 12 and the sealing compound 18 is sufficiently reliable in spite of the presence of the foil. The LEDs 20 are entirely covered by the sealing compound 18 towards the vehicle interior side.

(9) The glass pane 12 is rounded at its circumferential edges, the agglomerate layer 24 extending at least in regions up to the rounded region. However, in FIG. 1, the region in which the agglomerate layer 24 extends into the rounded region is cut away and thus not visible.

(10) Furthermore, the vehicle roof element 10 has an integrally injection-molded or foamed circumferential frame 28 along the edges 26 of the glass pane 12. In FIG. 1, the frame 28 is essentially arranged on the interior side 16 of the glass pane 12. The frame 28 can however also engage around the edges 26 of the glass pane 12 and extend up to the exterior side 14 of the glass pane 12. The glass pane 12 is thus supported in a particularly stable manner in the frame 28.

(11) In the region of the circumferential frame 28, an opaque cover layer 30 is arranged between the glass pane 12 and the agglomerate layer 24. This cover layer 30 serves as a black print and prevents a view onto the frame 28 from the outside. The cover layer 30 may comprise a glass ceramic or a paint coat.