EA016897B1 - Led information module - Google Patents

Abstract

This particular discovery relates to LED information modules. Such devices are capable to show static or dynamic information and may be used for commercial purposes as visual information tools. A module is made of flexible layered film material with electrode bundles and circuit boards placed between layers. One layer has a number of apertures for LEDs soldered from the outside. Apertures are situated in front of a circuit board at a distance according to desired pixel step. LEDs are covered with a protective cylindrical ring, which is fixed during press forming, at a height of their extension. Electrode bundles with circuit boards soldered up to them are situated strictly linear in horizontal or vertical direction depending on the way the module is rolled, provided that rolling should be performed across wires with radius of curvature of 100 mm or higher. The flexible module could be manufactured as a monolithic canvas of any size or separate lines, which are combined into a single flexible system by means of transverse flexible band cords made of high-tension fibers, for instance. The proposed design allows manufacturing LED information modules of any configuration or size, which could be easily rolled and are easy to use.

Description

The invention relates to light information modules - devices for representing static and dynamic information and can be used for illuminated advertising, as well as a means of visual display of information.

A light-information device is known that contains a base and a light guide, inside of which light sources are installed, the base being made in the form of an information or decorative element to which a light guide is mounted, made of a flexible light-transmitting electrical insulating, frost-resistant and heat-resistant tube, inside of which is a flexible electrically conductive panel on which fixed light sources parallel to each other (1). Subminiature incandescent lamps were used as a light source, while one of the lamp outputs is fixed on one side of the panel and the other on its other side, the distance between the sources being at least 2 cm, the specified fiber is fixed along the perimeter or along the symmetry axis of the information or decorative element.

The disadvantages of the device are the design complexity, the use of long printed circuit boards for mounting light sources and the short life of incandescent lamps.

The closest technical solution is the light information module, consisting of a housing with a metal or plastic base, a transparent cover and an intermediate partition on which LEDs, a current source and control elements are located in the silicone substrate. LEDs are connected in series, forming modules with pre-applied grooves. With the help of these modules various symbols, letters, etc. are easily applied. To obtain an interconnected form of the device, two modules are soldered together (2).

The disadvantages of the module are the lack of solidity and structural rigidity.

The objective of the invention is the creation of a mobile light-information module that can be easily rolled up and display information anywhere.

The problem is solved as follows.

The light-information module is made in the form of a flexible multilayer film material with a bundle of electrical wires pressed between the layers with printed circuit boards, in one layer of which there are holes for LEDs soldered from the outside, and the holes themselves in the film are located opposite the printed circuit board at a distance from each other in accordance with the specified pixel pitch. The LEDs are closed to the entire height of the protruding part from the base with a protective opaque cylindrical ring fixed in the hole during pressing. The bundle of electrical wires with printed circuit boards soldered to them is located strictly linearly in the horizontal or vertical direction depending on the direction of module folding into a roll, and the finished module must be rolled up across the line of electrical wires with a radius of curvature of 100 mm and above. The flexible module can be made in the form of a monolithic web of any size or in the form of separate strips connected into a single flexible system by transverse flexible tape cords, for example, of high-strength fibers.

The invention is illustrated by the attached drawing, where:

- polyvinyl butyral film, 5 = 0.38 mm;

- electric wires;

- printed circuit boards;

- LEDs;

- a protective ring.

1st example of module execution.

For the manufacture of a flexible module, the following components were taken: cables consisting of 5 copper wires with a diameter of 0.2 mm each, printed circuit boards soldered to them at a distance of 40 mm from each other, polyvinyl butyral film 0.38 mm thick, protective rings in the form of cylinders 18 mm in diameter with a wall thickness of 2.0 mm and a height of 15 mm, ordinary three-color LEDs.

In the films, which serve as the top layer of the module, holes with a diameter of 22 mm were cut out by stencil at a distance of 40 mm from each other horizontally and vertically, into which protective rings with small sides were inserted. On the lower layer of the film were laid out on a stencil of electric harnesses with boards. After that, the upper film with rings was laid on the lower part of the film, all this together was placed in a bag for pressing and in an autoclave. In the autoclave, the temperature was raised to 100 ° C in 30 min, kept for 15 min at a pressure of 2 atm, and the autoclave was cooled spontaneously. The compressed film was removed from the bag.

After that, LEDs were soldered to the printed circuit boards inside the rings with the condition that their upper part was 1.0-1.5 mm lower than the upper level of the ring.

2nd example of module execution.

Protective rings and LEDs were laid on a previously cut into strips 25 mm wide strips, the strips were connected with a transverse flat cord of high-strength fiber 12 mm wide and, similarly to Example 1, pressed.

The invention allows to obtain a flexible photoinformation module of any configurations and

- 1 016897 sizes, easily rolled up and easy to use.

Sources of information taken into account.

Claims (1)

CLAIM A light-information module consisting of a base with light sources soldered to electrical communications placed behind the base, characterized in that the base with light sources is a flexible multilayer film material which, after placement of electrode beams between them with printed circuit boards, is pressed together in an autoclave, in one of the layers there are holes with LEDs mounted inside them, soldered outside, with the holes in the film located opposite the printed circuit boards at a distance from each other in accordance with a predetermined pixel pitch.