Electronic device
US6442028B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 3, 2001 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | May 3, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K9/0022
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.