Electrical apparatus including fan unit and control panel including electrical apparatus

A control panel, comprising:

• an electrical apparatus;
• a housing in which the electrical apparatus is disposed;
• and
• a support rail fixed to the housing, wherein
• the support rail includes:
• a base part;
• and
• an overhang portion extending from an end of the base part,
• the electrical apparatus comprises:
• an electrical device configured to generate heat when driven;
• and
• a fan unit including a fan configured to generate an air flow,
• the electrical device includes a case having a first recess, which is recessed in a direction away from the base part of the support rail, and in which the support rail is disposed,
• the fan unit includes a case having a second recess, which is recessed in the direction away from the base part of the support rail, and in which the support rail is disposed,
• the case of the electrical device includes a first opening formed in a bottom surface of the first recess, and a second opening formed in a surface in contact with a space outside the electrical device,
• the case of the fan unit includes a third opening formed in a bottom surface of the second recess, and a fourth opening formed in a surface in contact with a space outside the fan unit,
• a first space is sandwiched between the bottom surface of the first recess of the case of the electrical device and the base part of the support rail,
• a second space is sandwiched between the bottom surface of the second recess of the case of the fan unit and the base part of the support rail,
• the first space and the second space are continuous with each other and constitute an air flow path defined by the base part and the overhang portion of the support rail and extending linearly along a longitudinal direction of the base part of the support rail in a direction between the case of the electrical device and the case of the fan unit,
• when the electrical device and the fan unit are fixed to the support rail and the fan unit is driven,
• air flows through the air flow path linearly from the first opening of the electrical device toward the third opening of the fan unit, or
• air flows through the air flow path linearly from the third opening of the fan unit toward the first opening of the electrical device,
• both ends of the air flow path in a direction in which the air flow path extends are closed by at least one of
• (a) the case of the electrical device,
• (b) the case of the fan unit, or
• (c) a closing member configured to close the air flow path,
• the third opening and the fourth opening are communicated with each other through an interior of the case of the fan unit, and
• the air flow created by the fan is caused to flow along the air flow path, then through the third opening into the interior of the case of the fan unit, and is then discharged from the interior of the case of the fan unit through the fourth opening.