Electronic device having cooling unit

A cooling unit installed in an electric device including a plurality of slots, a first slot into which a first plug-in unit is installed, and a first fan to create a current of air for cooling the plug-in units, the cooling unit comprising:

• a housing installed into a second slot, configured to include an inlet opening and a blow opening that opens toward the first slot;
• a second fan configured to create a current of air for cooling the first plug-in unit, the second plug-in unit being installed into a second slot adjacent to the first slot, arranged to a side of mounting component of the first plug-in unit;
• an internal passage configured to be arranged inside the housing, through which air flow from the inlet opening to the blow opening;
• and
• a guide member configured to guide, toward the first slot, air toward the second slot created by the first fan,
• wherein the second fan is arranged in the internal passage, and configured to flow air from the inlet opening to the blow opening.

A housing for a cooling unit, the cooling unit being installed in an electronic device including a plurality of slots, a first slot into which a first plug-in unit is installed, and a first fan to create a current of air for cooling the plug-in units, the cooling unit being installed into a second slot adjacent to the first slot, and including a second fan to create a current of air for cooling the first plug-in unit, the housing comprising:

• an inlet opening;
• a blow opening configured to open toward the first slot;
• an internal passage configured to be arranged inside the housing, through which air flow from the inlet opening to the blow opening;
• and
• a guide member configured to guide, toward the first slot, air toward the second slot created by the first fan,
• wherein the second fan is arranged in the internal passage, and configured to flow air from the inlet opening to the blow opening.