Power tool

A power tool comprising:

• a motor as a drive power source,
• a body housing the motor and having an end output unit for chucking an end tool driving a fastener;
• a trigger for starting driving of the motor;
• a handle grip provided integrally with the body;
• and
• a light unit disposed to one of the handle grip and the body, and having a light-emitting element for illuminating a fastener located at a distal end of the end tool, the end tool being driven by the motor to tighten the fastener to a workpiece;
• wherein the light unit comprises switch means for switching the light-emitting element on and off;
• and an off circuit for automatically turning the light-emitting element off at a predetermined time after the light-emitting element turns on, the switch means being disposed separately from the trigger.

A power tool comprising:

• a motor as a drive power source,
• a body housing the motor and having an end output unit for chucking an end tool driving a fastener;
• a handle grip provided integrally with the body;
• and
• a light unit disposed to the body, and having a light-emitting element for illuminating a fastener located at a distal end of the end tool, the end tool being driven by the motor to tighten the fastener to a workpiece;
• wherein the body has a generally hollow cylindrical part at a position corresponding to the end output unit;
• wherein the light unit is positioned at a tip end of the end output unit and is generally ring-shaped around a circumference of the generally hollow cylindrical part, and the light unit comprises a lens having a ring shape for emitting light in a ring-like manner from the light-emitting element, a power source for driving the light-emitting element, and switch means for switching light-emitting element on/off;
• and
• wherein the lens has a configuration in conformity with an outer circumferential configuration of the body, and the lens has an outer diameter in a radial direction of the body gradually smaller toward a front end of the body.

A power tool comprising:

• a motor as a drive power source.
• a body housing the motor and having an end output unit for chucking an end tool driving a fastener;
• a handle grip provided integrally with the body, the handle grip extending generally perpendicular to the body with providing a protective space surrounded by the handle grip and the body;
• and
• a light unit having a light-emitting element for illuminating a fastener located at a distal end of the end tool, the end tool being driven by the motor to tighten the fastener to a workpiece;
• a pull trigger is disposed at a top part of the handle grip for starting/stopping driving of the end tool, the light unit being disposed within the protective space and at a position below the body and above the trigger;
• and
• a transparent lens is disposed in front of the light unit;
• wherein the light unit is disposed within the protective space at the position below the body and immediately above the trigger.