Light sets are often used to decorate homes, gardens and buildings. They may also be used for advertising or indication purposes More commonly, they are used on festive occasions such as Cimstmas to decorate Christmas trees and the home.

Christmas light sets consist of a series of tiny light bulbs, which are interconnected by individual lead wires. Usually, light sets of considerable length are used to wind around buildings or trees. By making use of the flexibility of the lead wires themselves, to form on a planar surface specific shapes or patterns such as stars, bells and Christmas trees common in the Christmas season or greeting terms such as"Merry Christmas","Welcome"and"Happy New Year".

The object of the present invention is to bring about a method for the production of a new type of light decoration, or a sign as mentioned in the introduction. The features charactarizing the invention are set out in the claims inclosed.

Thanks to the invention a method has been brought about for the manufacturing of a light decoration or a sign which for fills its purpose in an outstanding way while offering an economic and simple way for its production.

According to the invention this can be brought about through the use of a vaccumformable sheet of material which is formed around a predetermined shape which is transferred on to it and which takes into consideration the positioning of a lamp assembly or structure. After the vaccumforming of the sheet a three-dimensional shape is created, which corresponds to the predetermined shape or mold which also corresponds to the lamp assembly or structure. In addition to the fact that through the use of vaccumforming with relation to to the invention, one can manufacture the light decoration both in a simple and economic way, a packaging is simultaneously created for the light decoration in question, because it is already positioned within the vaccumformed structure.

In the case where a shape which corresponds to the light decoration or any other predetermined shape is vaccumformed only onto one sheet it is possible to use a plane sheet of plastic which can be positioned against the first sheet with the help of vaccumformed knobs which corresponds with each other and allow the positioning of the sheets against each other. Alternatively both front and back sheets can be vaccumformed with a three-dimensional pattern which corresponds to a given three- dimensional predetermined shape and or the light decoration, which when positioned back to back create the cavity for the positioning of the lamp assembly.

Accordingly, a three-dimensional shape of the product is created in both directions, which creates a very esthetic light effect. Thanks to the vaccumfbrming techniques ability to produce a large variety of shapes and patterns, as in its above described use, its advantages are clearly demonstrated with comparison to the technique which has been used up to now for the production of the products currently on the market.

There are many advantages and possibilities for the realization of this invention, namely The possibility of using preprinted patterns which coordinate with the vaccumformed shape, The possibility of using sheets of plastic in a variety of translucent colors, The possibility of creating both parallel shapes on one sheet of plastic and folding it in the middle, overcoming the need for connections on one side and insuring a perfectly synchronized fitting, The possibility of vaccumforming only one sheet in order to create a one-sided three-dimensional fitting for the lamps, And the possibility of transforming this lamp into a"window lamp"or a decorative"chain of lamps".

When the light decoration is developed into a"window lamp"than as a result of its lightness it can easily be assembled directly onto a window by the simple means of, double sided tape or glue. Another advantage of the invention is that when the plastic sheet is vaccumformed with a simple three- dimensional shape it is possible to connect it, after the positioning of the lamp assembly in it, to shop window both on the outside and on the inside, because the plastic creates a watertight assembly.

The invention is further described below by way of examples and with reference to the through the accommodating drawings of which Fig. 1 shows a front view of a properly assembled light decoration with electric connection.

Fig. 2 shows a schematic perspective view of an alternative variation of a light decoration while portraying the assembly of the vaccumformed sheets.

Fig. 3 shows a side view of the fig. 2 portrayed lamp.

Fig. 4 shows a chain of light decorations according to the invention.

As illustrated in the drawings a lamp assembly is positioned 3 between two transparent or translucent plastic sheets I and 2, which are vaccumformed according to the invention. The creation of the sheets 1,2 accurse by the vaccumforming of them over a chosen predetermined shape for ex. a decorative lamp or christmas star and/or a light source. As a result of this a three dimensional shape is created both for the light source 4 and for the accommodating cables 5 which receive a cavity 6 for their positioning between the sheets 1,2.

In a given example the back sheet can be flat but also this sheet can, before the assembly of the light assembly 3, be given a three dimensional form, and when positioned against each other 1,2 they create a space or a cavity 6 for the light sources 4, electric cables 5. For the fixating of the sheets 1,2 against each other it is possible to make small vaccumformed knobs 7, which correspond to each other when the sheets I 2 are put together. A simplification of the creation of a light decoration accurse when only one sheet is used for both sides which is folded in the middle to form the light decorations upper connection, in which case it is only necessary to connect the bottom with glue or knobs.

The method for the production of a light decoration according to the invention can be made in the following way. No real mold is needed as the product in itself can be used as the predetermined shape.

The sheet is placed over the predetermined shape which will create the three-dimensional shape and/or over the light source. Following its warming, the sheet is pulled down over the predetermined shape with the help of vaccum suction. After the cooling of the sheet it is possible to separate it from the predetermined shape and is than ready to be aligned with the corresponding three-dimensional sheet which may enclose a light assembly if it is not already found in the first. By the creation of a space between the inner walls of the three-dimensional cavity and the light source it is possible to create a attractive lightning effect.