国民经济行业分类号：
C4350 | C3874 | C4090 | C3879
当前申请(专利权)人：
REHAU AG + CO
原始申请(专利权)人：
REHAU AG + CO
当前申请(专利权)人地址：
Otto-Hahn-Strasse 2,95111 Rehau,DE
发明人：
GOLDSTEIN, JÖRG | SCHMIDT, STEVEN | EIBL, STEFAN
摘要：
Die Erfindung betrifft eine Leuchtvorrichtung (10) mit einer Lichtleiterplatte (12), wenigstens einer Leuchtdiode (14) zum Erzeugen von in die Lichtleiterplatte (12) einkoppelnden Lichts, einem umlaufenden Rahmen (16) und einem Versteifungselement (18), wobei der Rahmen (16) einen Durchgang (19) umgrenzt, wobei ein umlaufender Randabschnitt (20) der Lichtleiterplatte (12) in dem Rahmen (16) aufgenommen ist, wobei die Lichtleiterplatte (12) eine umlaufende Seitenfläche (22) und wenigstens eine Lichtaustrittsfläche (24) aufweist, wobei wenigstens ein Mittel (26) zum Auskoppeln des von der umlaufenden Seitenfläche (22) in die Lichtleiterplatte (12) eingekoppelten Leuchtdiodenlichts durch die Lichtaustrittsfläche (24) hindurch vorgesehen ist, wobei das Versteifungselement (18) einen umlaufenden Randbereich (28) und einen mittleren Bereich (30) umfasst, wobei der umlaufende Randbereich (28) mit einer umlaufenden Außenfläche (32) des Rahmens (16) flächig und stoffschlüssig verbunden ist, und wobei der mittlere Bereich (30) in dem Durchgang (19) aufgenommen ist.
技术问题语段：
The technical problem addressed in this patent is to provide a lighting device with a light guide plate that has greater mechanical stability than existing solutions. The solution is a stiffening element that is connected to the frame of the lighting device and increases its torsional rigidity. The stiffening element has a peripheral edge area that is connected over a large area and in a materially bonded manner to the frame. This stiffening element increases the mechanical stability of the frame and the light guide plate, and advantageously counteracts bending.
技术功效语段：
The present invention relates to a lighting device with a light guide plate that has greater mechanical stability than existing solutions. The invention provides a stiffening element that is connected over a large area and in a materially bonded manner to the peripheral outer surface of the frame, which increases the torsional rigidity of the frame. The stiffening element can be made of metallic or plastic material, and it can be selected from a variety of options such as stainless steel, aluminum, magnesium, and so on. The plastic material can be uncrosslinked, partially crosslinked, or fully crosslinked. The invention also includes a curved liquid crystal display device and a reflector that increases the torsional rigidity of the frame. Overall, the invention provides a lighting device with improved mechanical stability compared to existing solutions.
权利要求：
1. A lighting device (10) comprising a light guide plate (12), at least one LED (14) for generating light coupling into the light guide plate (12), a peripheral frame (16) and a stiffening element (18), - wherein the frame (16) surrounds a through-passage (19), - wherein a peripheral edge portion (20) of the light guide plate (12) is accommodated in the frame (16), - wherein the light guide plate (12) has a peripheral side surface (22) and at least one light exit surface (24), - wherein light generatable by the LED (14) for coupling into the light guide plate (12) impinges on the peripheral side surface (22) of the light guide plate (12), - wherein at least one arrangement (26) is provided for coupling the light coupled into the light guide plate (12) from the peripheral side surface (22) out through the light exit surface (24), - wherein the stiffening element (18) comprises a peripheral edge region (28) and a central region (30), - wherein the peripheral edge region (28) is materially connected to a peripheral outer surface (32) of the frame (16) in a planar manner, and - wherein the central region (30) is accommodated in the through-passage (19).
2. The lighting device (10) according to claim 1, characterised in that the central region (30) of the stiffening element (18) is accommodated in the through-passage (19) in a force-fitting manner.
3. The lighting device (10) according to claim 1, characterised in that the central region (30) of the stiffening element (18) has a peripheral outer surface (34), wherein the peripheral outer surface (34) is materially connected to an inner surface (36) of the frame (16) in a planar manner.
4. The lighting device (10) according to claim 3, characterised in that the central region (30) comprises a depression (38), wherein the peripheral outer surface (34) is provided on a wall (40) of the stiffening element (18) that delimits the depression (38).
5. The lighting device (10) according to one of the preceding claims, characterised in that the lighting device (10) comprises a peripheral seal (42), which comprises a peripheral planar contact (68) with the light exit surface (24) and a peripheral planar contact (68) with the frame (16).
6. The lighting device (10) according to one of the preceding claims, characterised in that the light guide plate (12) is materially connected to the stiffening element (18) by a plurality of substance-to-substance bonds (44) and is spaced apart from the stiffening element (18) by the substance-to-substance bonds (44).