DE20117575U1 - Sandwich panel with light fields on both sides - Google Patents

Description

Was standing the Technology

Electroluminescent light surfaces are usually created using a three-layer structure on transparent foils or plates. The luminous pigment layer is followed by the insulation and reflection layer, onto which the second electrode is finally applied using an electrically conductive paste. ·'.·■'.■

This complex manufacturing process with selected materials, defined layer thicknesses and a controlled drying process is only possible in the case of a lighting configuration with front and rear functions by combining two lighting configurations.

Description of the invention

An embodiment according to claim 1 is explained with reference to the following figure:

A sandwich-like plate with metal outer surfaces (2) connected by a plastic core (1) receives on these, which are provided with an insulating and reflective coating (3), a defined luminescent layer structure (4, 5) consisting of two layers, which, after application of an alternating voltage via the electrical connections (6), is made to glow more or less depending on the voltage and frequency.

Advantages of the invention

With the light panel according to the invention, the manufacturing process is reduced by a coating by using a commercially available panel material, thus saving costs. ■ :

The sandwich-like structure of the panel material allows a two-layer luminous layer structure on both sides with a common electrical connection. By contour printing the luminous surface or sticking appropriately cut foils on it, the panel becomes an information carrier on one or both sides or serves decorative purposes, day and night.

1 insulating
Plastic core

2 metal exterior surfaces

3 Insulation and
Reflective layer

4 luminescent pigment,
layer

5 electrically conductive,
transparent layer

6 electrical connection

Claims (4)

1. A plate which is luminous on one or both sides, each with insulating and simultaneously reflective surfaces on the outward-facing metal surfaces which are connected to one another in an electrically insulating manner, characterized in that , after a defined coating with a binder enriched with luminous pigments and a further electrically conductive paste based thereon, together with the respective metal surface, said plate forms a flat capacitor which, after an alternating voltage is applied to the metal electrode on the one hand and the conductive transparent coating forming the second electrode on the other hand, causes the luminous layer to glow. 2. Single- or double-sided luminous plate according to claim 1, characterized in that it provides information and/or serves for decoration by printing the surface of the luminous layer structure or sticking foils in the form of letters, numbers or representations, the effectiveness of the lighting device being particularly evident in the dark. 3. Single- or double-sided luminous plate according to claim 1, characterized in that before applying the luminous layer structure to the insulating and simultaneously reflective plate, the information and/or representations are printed on one or both sides with a paste enriched with daylight luminous pigments, which are activated by the transparent luminous surface above after application of the alternating voltage and construction of the alternating field and are thus made intensively recognizable or readable, particularly in the dark area. 4. Single- or double-sided luminous plate according to claim 1, characterized in that a common electrical connection of the two luminous surfaces is made in such a way that, on the one hand, the two transparent electrodes applied by coating are connected via two bores and screw connections with a sleeve which is electrically insulating with respect to the metal surfaces and, on the other hand, the two metal surfaces exposed by the insulation layer can be connected to one another and fed.