Heat dissipating box

Details Heat dissipating box Heat dissipating box

1998-03-06

1999-06-15

Picard, Leo P.

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

361705, 361715, 361818, 165 803, 165 46, 165185, 174 521, 174252, 174 35R, 257713, 257721, H05K 720

Patent

active

059128038

ABSTRACT:
The present invention relates to a heat dissipating box for a printed board assembly (PBA) using natural convection for cooling. The PBA 64 is fastened between a first part 62 and a second part 61 and the joint is sealed with an elastic material 71. A back plane, which has an opening for a connector of the PBA, is mounted to the other two parts to prevent undesirable substances to get inside the box. The heat dissipating property of the PBA, mounted inside a box, increases rapidly if the PBA's heat dissipating components are placed near or in good thermal contact with the box. This can be obtained by placing bumps, for example supports 66, 68 or ridges 65, on the inside of the box, which are in close contact with the PBA. The surface area of the box may also be enlarged with cooling fins.

REFERENCES:
patent: 4371757 (1983-02-01), Debortoli et al.
patent: 4535386 (1985-08-01), Frey, Jr. et al.
patent: 4661888 (1987-04-01), Jewell et al.
patent: 4716498 (1987-12-01), Ellis
patent: 4771365 (1988-09-01), Cichoki et al.
patent: 4794487 (1988-12-01), Maschek et al.
patent: 5243493 (1993-09-01), Jeng et al.
patent: 5552961 (1996-09-01), Van Gaal et al.

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