Title:
DC POWER SUPPLY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/187846
Kind Code:
A1
Abstract:
Provided is a DC power supply device for which the overall product is miniaturized while cooling a heating element with good efficiency. This DC power supply device comprises: a housing that has a wall part forming a space internally; first openings 3c1, 3d1, and a second opening 3e via which the interior and exterior of the housing communicate; a circuit part that includes a first and a second circuit element fixed to the housing, and that converts alternating current to direct current; within the housing, a first air passage that communicates with the first openings, and a second air passage that communicates with the second opening; restricting wall parts 72, 73 that provide a bent passage via which the first air passage and the second air passage communicate; and a fan that generates air flow that flows from the first opening to the second opening via the bent passage. The fan is provided opposing the first opening or the second opening. The first circuit element is arranged within the first air passage, and the second circuit element within the second air passage.
Inventors:
ICHIHASHI NAOTO (JP)
YOSHINARI TAKUYA (JP)
KISHIMA YUJI (JP)
YOSHINARI TAKUYA (JP)
KISHIMA YUJI (JP)
Application Number:
PCT/JP2019/006741
Publication Date:
October 03, 2019
Filing Date:
February 22, 2019
Export Citation:
Assignee:
KOKI HOLDINGS CO LTD (JP)
International Classes:
H02M3/28; H01L23/467; H05K7/20
Foreign References:
| JP2017131103A | 2017-07-27 | |||
| US20140036439A1 | 2014-02-06 | |||
| JPH1169617A | 1999-03-09 | |||
| JP2008277482A | 2008-11-13 | |||
| JP2011077348A | 2011-04-14 |
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