An arrangement for shielding and/or cooling electronic...

H - Electricity – 01 – L

Patent

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Details

H01L 23/40 (2006.01) H01L 23/552 (2006.01) H01L 23/58 (2006.01) H01L 23/60 (2006.01) H05K 7/20 (2006.01)

Patent

CA 2185987

The present invention relates to an ar- rangement for shielding and/or cooling elec- tronic components mounted on a circuit board. The arrangement includes a generally planar shielding hood having downwardly extending side edges which extend around the perimeter of the hood and which are intended to surround the component, and cooling elements which have a generally planar underside and cooling fins disposed on the upper side thereof. Ac- cording to the invention, the arrangement also includes fastener means (5) in the form of hook means (6) mounted on the surface of the cir- cuit board (2) and holder means (7) mounted on the cooling elements (4) and coacting with the hook means, wherein the holder means (7) can be brought into resilient or spring engage- ment with the hook means. The shielding hood (3) is adapted to the component (1) and when the component is to be shielded is placed over the component. The cooling element (4) is also adapted to the component (1) and when the component is to be cooled is placed ei- ther on the component or when appropriate on the shielding hood (3) over the component. The fastener means (5) are intended to press the cooling elements (4) resiliently against the shielding hood (3) and against the component (1) respectively.

La présente invention concerne un dispositif de blindage et/ou de refroidissement des composants électroniques montés sur une plaquette de circuits imprimés. Le dispositif comporte, d'une part, un capot de blindage généralement plan comportant sur son pourtour des rebords tournés vers le bas, ces rebords étant conçus pour entourer le composant, et d'autre part des éléments de refroidissement présentant une partie inférieure généralement plane et une partie supérieure dotée d'ailettes de refroidissement. Selon l'invention, le dispositif comporte également des fixations (5), constituées de crochets (6) montés sur la surface de la plaquette (2) et de pattes de retenue (7) montées sur les éléments de refroidissement, les pattes de retenues coopérant avec les crochets par enclenchement des pattes de retenue (7) dans les crochets par effet élastique ou de ressort. Lorsque le composant (1) nécessite un blindage, le capot de blindage qui lui est adapté se place au dessus de lui. Lorsque le composant (1) nécessite un refroidissement, l'élément de refroidissement (4) qui lui est également adapté se place, selon le cas, soit au dessus de lui, soit au dessus du capot de blindage (3). Les fixations (5) sont conçues pour comprimer les éléments de refroidissement (4) de manière élastique, d'une part contre le capot de blindage (3), et d'autre part contre le composant (1).

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