Work machine

A work machine comprising:

• a motor;
• a power transmission apparatus transmitting power of the motor to a tool support member;
• an illumination apparatus arranged outside the power transmission apparatus in a radial direction of an axis that is a rotation center of the power transmission apparatus, and illuminating a forward area of the tool support member;
• and
• a cooling passage formed between the power transmission apparatus and the illumination apparatus in the radial direction and through which air passes.

A work machine comprising:

• a motor including an output shaft extending in a front-back direction;
• a power transmission apparatus transmitting power of the motor to a tool support member;
• a case accommodating the power transmission apparatus;
• a housing accommodating the motor and the power transmission apparatus and supporting the case such that the case is nonrotatable;
• and
• an exhaust port through which air in the housing is discharged outside the housing,
• wherein the exhaust port is arranged between the power transmission apparatus and a front end of the tool support member in a direction of an axis that is a rotation center of the tool support member, and
• the exhaust port is arranged between the axis and an end portion of the housing in a front view of the housing.

A work machine comprising:

• a motor including an output shaft extending in a front-back direction;
• a power transmission apparatus transmitting power of the motor to a tool support member;
• a case accommodating the power transmission apparatus;
• a housing accommodating the motor and the case and supporting the case such that the case is nonrotatable;
• a protector covering a portion of the case, the portion being exposed from the housing;
• an exhaust port provided in the protector and through which air in the housing is discharged outside the housing;
• and
• a passage provided between the case and the protector and communicating with inside of the housing and the exhaust port.

A work machine comprising:

• a motor including an output shaft extending in a front-back direction;
• a power transmission apparatus transmitting power of the motor to a tool support member;
• a case accommodating the power transmission apparatus;
• a housing accommodating the motor and supporting the case such that the case is nonrotatable;
• and
• a passage formed between the housing and the case and communicating with inside and outside of the housing.