Rolled product, method and device for the production thereof, and use of the same

Abstract

A rolled product, especially a rolled product consisting of a metallic material, such as an aluminium sheet, for using in lighting engineering as a reflector surface, the surfaces on both sides of the rolled product displaying essentially the same reflective properties. One such rolled product is especially suitable as a material for constructing a reflector or for the anti-glare shade of a louvered light fitting. The rolled product is produced by first rolling the product and then providing the two optionally differently reflecting surfaces with similar reflective properties by a polishing process following the rolling.

Description

BACKGROUND OF THE INVENTION [0001] The invention relates to a rolled product, in particular a rolled product made of a metallic material for use as a reflector material in lighting engineering, comprising a first surface and a second surface, in which the surfaces of the two sides exhibit a dispersive reflection behaviour for light. The invention also relates to a method for producing the rolled product, a device for carrying out the production method for the rolled product and the use thereof. [0002] Metal sheets, such as in particular rolled aluminium sheets, are used in technology for the most varied tasks. Thus, for example, rolled aluminium sheets have been used successfully for a long time as reflectors for lamp housings, in particular for lamp housings of fluorescent lamps (for example neon strip lamps with or without shielding louvres). In order to achieve an adequate gloss level for this application, it is generally still necessary to subsequently polish the rolled metal sh...

AI Technical Summary

Benefits of technology

[0011] In the scope of the invention, a rolled product with a first surface and a second surface, in which the surfaces of the two sides exhibit a dispersive reflection behaviour for light, is proposed, in which the reflection behaviour of the two surfaces is substantially the same. Differing from the previously prevailing paradigms, that, to avoid unnecessary costs, only one surface is processed in such a way that it receives the required reflection behaviour, it is therefore proposed, that the two surfaces of the metal sheet exhibit the desired reflection behaviour, and this should preferably be a regulated light-dispersive behaviour. Although this can lead to an increase in costs in the production process for the rolled product and therefore for the rolled product itself, these disadvantages can be balanced for a large number of applications by improved reflection behaviour and a simpler construction of the lamps, mirror optics and other light-directing components produced therefrom, such as louvered light fittings.

[0012] Thus, for example, glare protection plates of louvered lamps with the proposed rolled product could simply consist of one piece of the proposed metal sheet, without the optics of the lamps or the light emitted thereby exhibiting undesired inhomogeneities. The rolled product can also be advantageously used for certain reflector arrangements, as in the case of a fissure line of the reflector, separation of the metal sheet, a rotation by 180° and a subsequent connection of the two parts is no longer necessary. Instead, substantially the same result can be achieved when using the proposed metal sheet, by means of composite manufacturing by simple punching and bending. In this follow-up composite manufacturing, the mirror optics are produced by punching and bending a single piece of, for example, aluminium sheet, so expensive joining of a plurality of parts, in which, moreover, care always has to be taken that the surfaces do not become scratched during the assembly processes, becomes unnecessary. The previously necessary marking of the preferred direction in the case of direction-dependent surfaces can also be dispensed with.

[0013] It is advantageous if the surfaces exhibit an at least partially diffusely dispersive reflection behaviour. Owing to the diffuse light dispersion, relatively uniform illumination behaviour can be improved in different directions. The surfaces preferably exhibit a diffusely dispersive reflection behaviour which is as regulated as possible. Wishes with respect to an aesthetic appearance of the mirror optics can therefore be fulfilled.

Problems solved by technology

Although this can lead to an increase in costs in the production process for the rolled product and therefore for the rolled product itself, these disadvantages can be balanced for a large number of applications by improved reflection behaviour and a simpler construction of the lamps, mirror optics and other light-directing components produced therefrom, such as louvered light fittings.

In this follow-up composite manufacturing, the mirror optics are produced by punching and bending a single piece of, for example, aluminium sheet, so expensive joining of a plurality of parts, in which, moreover, care always has to be taken that the surfaces do not become scratched during the assembly processes, becomes unnecessary.

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