Electronic device

H - Electricity – 05 – K

Patent

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Details

H05K 7/20 (2006.01) G11B 31/00 (2006.01) G11B 31/02 (2006.01) H05K 9/00 (2006.01)

Patent

CA 2377994

An electronic device having a circuit board, a shielding plate disposed thereon and a three-terminal regulator is provided with a heat sink positioned on the outer side of the circuit board and connected to the three-terminal regulator. The heat of three-terminal regulator is radiated from the heat sink, thus making it possible to prevent heating of the shielding plate. In this way, electronic device elements that do not stand up very well to heat, such as an optical pickup unit, can be placed directly on shielding plate, so that the heat of three-terminal regulator is efficiently dissipated and the size of the electronic devices may be reduced.

La présente invention concerne un dispositif électronique, qui comprend une carte de circuit imprimé, une plaque de protection, placée sur ladite carte, ainsi qu'un régulateur à trois terminaux. Ce dispositif est pourvu d'un dissipateur thermique, qui est placé sur la face extérieure de ladite carte de circuit imprimé et est connecté audit régulateur à trois terminaux. La chaleur du régulateur à trois terminaux rayonne à partir du dissipateur thermique, ce qui permet d'empêcher la plaque de protection de chauffer. Ainsi, des éléments de dispositif électronique qui ne résistent pas très bien à la chaleur, tels que des unités de capteur optique, peuvent être montés directement sur la plaque de protection, de façon que la chaleur du régulateur à trois terminaux est efficacement dissipée et que la taille des dispositifs électroniques peut être réduite.

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