FR2910225A1 - Light adapting device for automobile, has printed circuit with parts, where terminals in contact with fixation component are provided at one part and exuberance is provided at end of terminals to assure firm maintenance in component - Google Patents

Abstract

The device has a double face printed circuit (1) with two parts, where one part is covered by translucent material (6). Color management system (CMS) type LEDs (4) and components utilized for circuit operation is provided at another part. Terminals (2) in contact with a fixation component are provided at the former part. An exuberance (3) such as tin ball, is provided at an end of the terminals for assuring the firm maintenance in the fixation component.

Description

The present invention relates to a device for adapting lighting

  consisting of one or more LEDs or LEDs (Electro-Luminescent Diodes) and a printed circuit instead of non-base electric light bulbs, while being at least as stable. The lamps, without standard incandescent base, have the drawbacks of consuming much more than LEDs, of having a much lower lifetime and of being more limited by the choice of lighting colors, given their emission spectrum. which is smaller. They consist of glass, which induces greater sensitivity to shocks and produce energy losses that result in sufficient heat to cause a burn on contact with the skin. Contrary to a solution of adaptation of a plastic part added to a LED and to which we will give a form close to the base of the lamp without standard base. The present invention has the advantages of being less expensive to produce, even in small series, while offering a much better stability and maintenance in the fastener as well as an almost infinite number of configuration possibilities of assemblies compatible even with the future electronic components. It comprises in fact according to a first characteristic, a printed circuit divided into two parts. The first is where the LED (s) and the various components useful for the operation of the circuit will be. The second part is that representing the pins coming into contact with the fixing member and at their end an exuberance ensuring a firm hold in this body. According to particular embodiments: - the printed circuit may have one or more standard LEDs or CMS (the same for other electronic components that constitute the assembly) and be composed of several layers. this first part may be partially or completely covered in order to be reinforced, protected or to improve the diffusion of light. - the part that serves as a contact with the fastener must respect the dimensions of last. The pins of the printed circuit may be coated with a conductive material more resistant to oxidation than copper. - The exuberance at the end of the pins (one or both sides) 2910225 which allows a better maintenance can be composed of directly welded tin or a conductive part fixed on the latter. Fixing can also do this by welding. The accompanying drawings illustrate the invention: Fig. 1 shows an example of simple mounting consisting of an LED. Figures 2 and 3 shows an example of mounting where two LEDs are used. With reference to these drawings, the assembly comprises a printed circuit (1), of which a part composed of pins (2) serves as a contactor, at the end of which is the exuberances obtained here by a tin ball ( 3) welded to the pins previously pierced with a small hole, to ensure the maintenance at this location of the material. This ensures a much better support. This assembly must obviously respect as much as possible the dimensions of the base of the incandescent lamps to ensure a good fit with the fixings. The other part consists of an electrical assembly where there is an LED (4) and a resistor (5). This part is covered here by a translucent material (6) which is here a thermo shrinkable plastic 20 to strengthen the maintenance of all and better distribute the light on the sides of the LED. In the embodiment according to Figs. 2 and 3, the printed circuit board C1 (1) is a double-sided circuit where the solder used is solder lug due to the use of a SMD resistor (5). . The IC will be drilled in its center to be able to introduce a second LED (7) to better overcome the lack of side lighting of the first (4). A translucent heat-shrinkable sheath (6) covers the part of the two LEDs to better distribute the light on the sides. The exuberances (3) are obtained by the use of small metal pieces (8) set up by means of the welding lug. According to a variant not shown, a metal piece can be fixed by passing through a small hole at the end of a pin and pinched thereon. The use of LEDs with CMS type fixing may also be possible to improve the lighting angle. By way of nonlimiting example, this invention can be applied to replace 12-volt, 5-watt incandescent lamps used as pilot lights in automobiles. Despite the vibrations encountered in the automobile the invention will remain in its location thanks to the exuberance of the pins.

Claims (3)

  1) Device for adapting lighting composed of one or more LEDs (4) (7) of any type, by means of a printed circuit (1) instead of incandescent electric lamps without base while being at least as stable thanks to the exuberances (3) which are at the end of these pins.   2) Device according to claim 1 characterized by the possibility of receiving different components (5) (4) (7) to allow multiple assemblies.   3) Device according to the preceding claims characterized by the possibility of covering the light assembly with a translucent material (6).