Power supply apparatus

A power supply apparatus comprising:

• a case having a front panel, and a rear panel disposed to face said front panel with a spacing disposed therebetween, said front panel having therein a plurality of air intake openings and a first opening spaced from said air intake openings, said first opening being larger than said air intake openings, said rear panel having a plurality of air discharge openings facing said plurality of air intake openings;
• a blower disposed within said case for introducing air through said air intake openings into said case and discharging the introduced air through said air discharge openings;
• a control panel disposed to close said first opening;
• a first printed circuit board disposed at a location within said case corresponding to the location of said first opening;
• and
• a plurality of components mounted on said first printed circuit board, including a control device which can be operated from outside said case, and a display device providing a display viewable from outside said case;
• and
• a closed receptacle disposed within said case, said receptacle extending from a periphery of said first opening further into said case and enclosing said first printed circuit board therein.