ELECTRONIC CIRCUIT UNIT

PROBLEM TO BE SOLVED: To provide an electronic circuit unit capable of improving heat radiation effect without adversely affecting shield effect and a mechanical strength of a shield case.SOLUTION: In an electronic circuit unit 1 in which a high frequency circuit provided on a circuit board 3 is cov...

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Bibliographic Details
Main Authors YAMAMOTO MASAKI, KISHIMOTO YOSHIHISA
Format Patent
LanguageEnglish
Published 10.09.2012
Subjects
CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
PRINTED CIRCUITS
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Summary:PROBLEM TO BE SOLVED: To provide an electronic circuit unit capable of improving heat radiation effect without adversely affecting shield effect and a mechanical strength of a shield case.SOLUTION: In an electronic circuit unit 1 in which a high frequency circuit provided on a circuit board 3 is covered with a box-like shield case 2 made of a metal plate, a lid of the shield case 2 (for example, a lower cover 22) is provided with an inward facing semi-cylindrical lib 23 having an opening 23a at both ends in a length direction, and an outward facing semi-cylindrical lib 24 having an opening 24a at both ends in a length direction. The inward facing lib 23 formed to protrude toward the circuit board 3 is caused to abut on a conductor part 10 of the circuit board 3 at a position directly under a heating component (IC4-6). The outward facing rib 24 formed to protrude along such a direction as coming away from the circuit board 3 is caused to abut on a conductor part 31 of a mother board 30 on which the electronic circuit unit 1 is mounted.
Bibliography:Application Number: JP20110038620