Heat dissipating box
US5912803A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1998 |
| Grant date | Jun 15, 1999 |
| Priority date | — |
| Expiry date | Mar 6, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K7/1461
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.