Abstract: A power tool includes: a motor; an output shaft that is rotated by a rotational force of the motor; a chip-on-board light emitting diode disposed around the output shaft; and a suppression device configured to suppress a temperature of the chip-on-board light emitting diode to a predetermined allowable value or less.

Abstract: A power tool includes a motor, an output shaft, a chip-on-board light emitting diode, and a light cover. The output shaft is rotated by a rotational force of the motor. The chip-on-board light emitting diode is disposed around the output shaft. The chip-on-board light emitting diode includes: a substrate having a circular ring portion; and an LED chip disposed on a front surface of the circular ring portion. The light cover is fixed to the substrate. The light cover includes: an inner cylindrical portion disposed radially inside with respect to the circular ring portion; and a light transmission portion through which light emitted from the LED chip passes. The inner cylindrical portion includes a cover slope that totally reflects light from the LED chip forward.

Abstract: A power tool includes: a motor; an output shaft that is rotated by a rotational force of the motor; a chip-on-board light emitting diode disposed around the output shaft; and a suppression device configured to suppress a temperature of the chip-on-board light emitting diode to a predetermined allowable value or less.

Abstract: An electric work machine avoids lowering the visibility of a workpiece by an operator. An electric work machine includes a motor, an output unit operable with a rotational force from the motor, a light emitter at least partially surrounding the output unit, an optical member including an outer cylinder located radially outward from the light emitter, and a light transmitter located frontward from the light emitter to allow light emitted from the light emitter to pass through, and a light shield located radially outward from the outer cylinder.

Abstract: A power tool includes a motor; an output part configured to be rotated around a rotational axis in response to energization of the motor; a plurality of lights disposed spaced apart around the output part; and an optical member having a refractive surface that refracts illumination light emitted from a light-emitting surface of one of the lights such that the main illumination direction extends at an angle away from the rotational axis.

Abstract: An illuminator that emits light from a radially outer portion of the cutting tool toward the cutting tool includes a first light source and a second light source, and a first lens and a second lens. The first lens has a first emission surface including a first outermost portion located farthest and at a first distance from a first center axis including a first light source center of the first light source and perpendicular to the first light source. The second lens has a second emission surface including a second outermost portion located farthest and at a second distance from a second center axis including a second light source center of the second light source and perpendicular to the second light source. A distance between the first center axis and the second center axis is shorter than a sum of the first distance and the second distance.

Abstract: A power tool includes a motor, an output shaft, a chip-on-board light emitting diode, and a light cover. The output shaft is rotated by a rotational force of the motor. The chip-on-board light emitting diode is disposed around the output shaft. The chip-on-board light emitting diode includes: a substrate including a circular ring portion; and an LED chip disposed on a front surface of the circular ring portion. The light cover is fixed to the substrate. The light cover includes: an outer cylindrical portion disposed radially outside with respect to the circular ring portion; and a light transmission portion through which light emitted from the LED chip passes. An opening is provided in a lower portion of the outer cylindrical portion.

Abstract: A power tool includes a motor, an output shaft, a chip-on-board light emitting diode, and a light cover. The output shaft is rotated by a rotational force of the motor. The chip-on-board light emitting diode is disposed around the output shaft. The chip-on-board light emitting diode includes: a substrate having a circular ring portion; and an LED chip disposed on a front surface of the circular ring portion. The light cover is fixed to the substrate. The light cover includes: an inner cylindrical portion disposed radially inside with respect to the circular ring portion; and a light transmission portion through which light emitted from the LED chip passes. The inner cylindrical portion includes a cover slope that totally reflects light from the LED chip forward.

Abstract: A power tool includes: a motor; an output shaft that is rotated by a rotational force of the motor; a chip-on-board light emitting diode disposed around the output shaft; and a suppression device configured to suppress a temperature of the chip-on-board light emitting diode to a predetermined allowable value or less.

Abstract: A power tool includes a motor, an output shaft that is rotated by a rotational force of the motor, a chip-on-board light emitting diode disposed around the output shaft, and a white translucent optical member including a light refraction portion that refracts light emitted from the chip-on-board light emitting diode. In at least one cross section parallel to and passing through a rotation axis of the output shaft, a shape of the light refraction portion is line-symmetric with respect to the rotation axis.

Abstract: A job-site tool in one aspect of the present disclosure includes and a display. The display is configured to display information regarding the job-site tool. The display includes a circuit board, at least one light emitter, an electric conduction member, at least one lens, and a resin member. The at least one lens is provided on the circuit board to cover the at least one light emitter. The resin member includes a lens cover area that covers surroundings of the at least one lens to thereby secure the at least one lens to the circuit board, and an electric conduction cover area that covers the electric conduction member.

Abstract: A power tool includes: a motor; an output part configured to be rotated around a rotational axis in response to energization of the motor; a plurality of lights disposed spaced apart around the output part; and an optical member having a refractive surface that refracts, radially outward of (away from) the rotational axis, illumination light emitted from a light-emitting surface of one of the lights.

Abstract: An illuminator that emits light from a radially outer portion of the cutting tool toward the cutting tool includes a first light source and a second light source, and a first lens and a second lens. The first lens has a first emission surface including a first outermost portion located farthest and at a first distance from a first center axis including a first light source center of the first light source and perpendicular to the first light source. The second lens has a second emission surface including a second outermost portion located farthest and at a second distance from a second center axis including a second light source center of the second light source and perpendicular to the second light source. A distance between the first center axis and the second center axis is shorter than a sum of the first distance and the second distance.

Abstract: A job-site gear in one aspect of the present disclosure includes a circuit board, at least one electronic component, and a resin member. A first surface of the circuit board includes a first area, a second area, and a third area. The third area is located in a boundary between the first area and the second area. A second surface of the circuit board includes a fourth area, a fifth area, and a sixth area located behind the first area, the second area, and the third area, respectively. The third area and the sixth area include at least one slit penetrating through the circuit board. The resin member is integrally molded so as to (i) penetrate through the at least one slit and (ii) cover the first area, the fourth area, and a part of the at least one electronic component on the first area.

Abstract: A trigger switch includes: a housing; a trigger provided outside the housing; a plunger that connects the trigger to the housing so as to approach or separate from the housing, and includes a slider disposed inside the housing; a first printed wiring board that is disposed inside the housing and includes a sliding resistor configured to contact the slider and a control element that configures a control circuit together with the sliding resistor; and a second printed wiring board that is disposed inside the housing separately from the first printed wiring board and electrically connected to the first printed wiring board, and includes a power element configured to supply electric current based on a signal of the control element.

Abstract: A job-site tool in one aspect of the present disclosure includes and a display. The display is configured to display information regarding the job-site tool. The display includes a circuit board, at least one light emitter, an electric conduction member, at least one lens, and a resin member. The at least one lens is provided on the circuit board to cover the at least one light emitter. The resin member includes a lens cover area that covers surroundings of the at least one lens to thereby secure the at least one lens to the circuit board, and an electric conduction cover area that covers the electric conduction member.

Abstract: A pair of open/close and current-passing movable contact pieces is supported on a movable contact terminal such that the pair is rotatable along with the reciprocation of an operating element. An open/close movable contact is mounted on the open/close movable contact piece and is rotatably biased by a spring member. A current-passing movable contact is mounted on the current-passing movable contact piece. By moving the operating element, a restriction imposed on a position of the operating element is released so that the open/close movable contact piece is rotated by a spring force of the spring member whereby the open/close movable contact is brought into pressure contact with an open/close fixed contact mounted on a fixed contact terminal. The current-passing movable contact piece is rotated by the operating element so that the current-passing movable contact is brought into pressure contact with a current-passing fixed contact mounted on the fixed contact terminal.

Abstract: A switch, with enhanced operability and capable of changing control circuits independently by one hand, has a printed circuit board, first and second wiring patterns provided on one surface of the printed circuit board, first and second crank members supported for rotation above the printed circuit board, a first switching slider configured to rotate with the first crank member as the first switching slider slides an the first wiring pattern; and a second switching slider configured to rotate with the first crank member as the second switching slider slides on the second wiring pattern. The first and second crank members are positioned at respective positions where they are driven by one hand of an operator.

Abstract: A trigger switch has a case member, a cover member, and an operation member configured to be used to carry out an operation. The case member and the cover member are combined with each other to form a waterproof case. When the operation member is operated, the operation member is displaced inward of the waterproof case. An internal pressure of the waterproof case changes in accordance with displacement of the operation member. The case member has a case base that is made from an inelastic body. The case base does not deform in accordance with a change in internal pressure of the waterproof case. The case base has at least one hole part. The case member has at least one deformation section that seals the at least one hole part. The deformation section is made from an elastic body.

Abstract: A terminal connection structure has a housing, a base housed in the housing, and a terminal unit having a pair of tab terminals disposed on the base, a pair of terminal portions disposed in the tab terminals in parallel, each of which is exposed from the housing and configured to be connected to an external terminal, and a terminal plate sandwiched between the pair of tab terminals.