Blower motor unit for air conditioner

A blower motor unit for an air conditioner, comprising:

• a brushless motor adapted to rotate a blower fan constituting part of an air conditioning device;
• a circuit substrate on which a control circuit adapted to control the brushless motor is provided;
• a support plate having a bearing member that rotatably supports a rotating shaft of the brushless motor, together with supporting the circuit substrate;
• a heat dissipating member provided on the support plate and being capable of dissipating heat of the circuit substrate;
• and
• a casing that is constituted by combining a first casing member and a second casing member, and accommodates the brushless motor, the circuit substrate, the heat dissipating member, and the support plate;
• wherein an air introduction port, a rotating shaft insertion opening through which the rotating shaft is passed, and a first flow passage for causing an air introduced from the air introduction port to flow to at least the brushless motor and the heat dissipating member are formed in the first casing member;
• a second flow passage through which the air introduced from the air introduction port is allowed to flow is formed in the second casing member, and a guide member that is adapted to guide the air from the second flow passage to the first flow passage is provided in the second casing member;
• and
• the guide member is a protrusion that faces toward the heat dissipating member, and protrudes toward the side of the first casing member.