Abstract: A snow removal machine has: a storage unit that stores a vehicle speed coefficient map indicating the relationship between an incline angle and a vehicle speed coefficient for decreasing an instructed vehicle speed; a vehicle speed coefficient setting unit that sets the vehicle speed coefficient on the basis of a detected incline angle and the vehicle speed coefficient map; and a vehicle speed setting unit that sets the vehicle speed of a traveling unit by way of multiplying the instructed vehicle speed by the set vehicle speed coefficient. The vehicle speed coefficient map sets the vehicle speed coefficient so same is smaller for larger incline angles when at least the traveling unit is going forward on an upslope. A travel control unit controls a drive source so that the traveling unit travels at the set vehicle speed set by the vehicle speed setting unit.

Abstract: A snow removal machine capable of illuminating, with a light projector, a dropped position of snow that varies depending on a direction of a chute guide. A working machine as a snow removal machine includes a machine body, and a chute that is provided on the machine body, and throws away snow. The chute includes a chute main body extending upwardly from the machine body, and a chute guide that is pivotably provided on a distal end portion of the chute main body, and adjusts a snow throwing direction that is an up-down direction of the snow to be thrown, the chute guide is connected to the chute main body side through a link, and the link is provided with a light projector so as to be capable of illuminating a dropped position of the snow to be thrown.

Abstract: A burden on an operation of an operator is reduced. A working machine includes a grid light that projects a grid light of a grid-shaped pattern, and a control unit that control the vehicle in accordance with deformation of the pattern of the grid light according to a shape of a projection spot.

Abstract: A snow removal machine has: a storage unit that stores a vehicle speed coefficient map indicating the relationship between an incline angle and a vehicle speed coefficient for decreasing an instructed vehicle speed; a vehicle speed coefficient setting unit that sets the vehicle speed coefficient on the basis of a detected incline angle and the vehicle speed coefficient map; and a vehicle speed setting unit that sets the vehicle speed of a traveling unit by way of multiplying the instructed vehicle speed by the set vehicle speed coefficient. The vehicle speed coefficient map sets the vehicle speed coefficient so same is smaller for larger incline angles when at least the traveling unit is going forward on an upslope. A travel control unit controls a drive source so that the traveling unit travels at the set vehicle speed set by the vehicle speed setting unit.

Abstract: Visibility of information that is provided to a worker is enhanced. A working machine includes an indicator device that functions as an information providing unit that provides information of a machine body to the worker, and the indicator device emits an indicator light to a ground that is located in front of the working machine and is exposed to a worker side that is located at a manipulation position.

Abstract: Presence of a working machine is noticed by those in the surroundings, and a worker is easily informed of a warning relating to an external environment. A working machine includes a detection unit including a sensor detecting an external environment of a machine body, and a control unit that controls a headlight that functions as an illumination unit based on the detected external environment.

Abstract: There is provided a snow removal machine capable of illuminating, with a light projector, a dropped position of snow that varies depending on a direction of a chute guide. A working machine as a snow removal machine includes a machine body, and a chute that is provided on the machine body, and throws away snow. The chute includes a chute main body extending upwardly from the machine body, and a chute guide that is pivotably provided on a distal end portion of the chute main body, and adjusts a snow throwing direction that is an up-down direction of the snow to be thrown, the chute guide is connected to the chute main body side through a link, and the link is provided with a light projector so as to be capable of illuminating a dropped position of the snow to be thrown.

Abstract: Presence of a working machine is noticed by those in the surroundings, and a worker is easily informed of a warning relating to an external environment. A working machine includes a detection unit including a sensor detecting an external environment of a machine body, and a control unit that controls a headlight that functions as an illumination unit based on the detected external environment.

Abstract: Visibility of information that is provided to a worker is enhanced. A working machine includes an indicator device that functions as an information providing unit that provides information of a machine body to the worker, and the indicator device emits an indicator light to a ground that is located in front of the working machine and is exposed to a worker side that is located at a manipulation position.

Abstract: A burden on an operation of an operator is reduced. A working machine includes a grid light that projects a grid light of a grid-shaped pattern, and a control unit that control the vehicle in accordance with deformation of the pattern of the grid light according to a shape of a projection spot.

Abstract: A marking device includes a light-emitting unit configured to emit light, a housing configured to accommodate the light-emitting unit, and a support configured to support the housing. The housing can include a transmitting portion configured to transmit the light from the light-emitting unit through a circumferential portion of the housing, and a roof covering the light-emitting unit accommodated in the housing. The housing can include a side wall formed between every two adjacent windows of the plurality of windows.

Abstract: An automatic operation vehicle that automatically performs an operation in an operation area is provided. The vehicle includes an image analysis unit configured to extract a marker included in an image captured by a camera provided on the automatic operation vehicle. If a situation in which the marker that was extracted from the image captured by the camera cannot be extracted by the image analysis unit from the image captured by the camera has occurred during a movement of the automatic operation vehicle in a constant direction. The image analysis unit determines whether the marker extracted before an occurrence of the situation and the marker extracted after an elimination of the situation are the same marker.

Abstract: An automatic operation vehicle that automatically performs an operation in an operation area is provided. A survey unit acquires the position information of the marker using a first angle between the moving direction and a direction to the marker from a first point through which the vehicle passes during the movement in a constant moving direction, a second angle between the moving direction and a direction to the marker from a second different point through which the vehicle passes during the movement in the moving direction, and a distance between the first point and the second point. The survey unit determines the first point and/or the second point during the movement of the vehicle in the moving direction such that the angle difference between the first angle and the second angle becomes close to 90°.

Abstract: An automatic operation vehicle that automatically performs an operation in an operation area is provided. The vehicle includes a moving direction determination unit configured to determine a moving direction of the vehicle, an image analysis unit configured to extract a marker included in an image captured by a camera provided on the vehicle, and a survey unit configured to acquire, by triangulation, position information of the marker extracted by the image analysis unit. When the survey unit starts acquiring the position information of the marker, the moving direction determination unit determines, as the moving direction, a direction in which the vehicle does not come into contact with the marker, and an angle difference with respect to a direction from a current position of the vehicle to the marker is smaller than 90°.

Abstract: A marking device includes a light-emitting unit configured to emit light, a housing configured to accommodate the light-emitting unit, and a support configured to support the housing. The housing can include a transmitting portion configured to transmit the light from the light-emitting unit through a circumferential portion of the housing, and a roof covering the light-emitting unit accommodated in the housing. The housing can include a side wall formed between every two adjacent windows of the plurality of windows.

Abstract: An automatic operation vehicle that automatically performs an operation in an operation area is provided. The vehicle includes a moving direction determination unit configured to determine a moving direction of the vehicle, an image analysis unit configured to extract a marker included in an image captured by a camera provided on the vehicle, and a survey unit configured to acquire, by triangulation, position information of the marker extracted by the image analysis unit. When the survey unit starts acquiring the position information of the marker, the moving direction determination unit determines, as the moving direction, a direction in which the vehicle does not come into contact with the marker, and an angle difference with respect to a direction from a current position of the vehicle to the marker is smaller than 90°.

Abstract: An automatic operation vehicle that automatically performs an operation in an operation area is provided. A survey unit acquires the position information of the marker using a first angle between the moving direction and a direction to the marker from a first point through which the vehicle passes during the movement in a constant moving direction, a second angle between the moving direction and a direction to the marker from a second different point through which the vehicle passes during the movement in the moving direction, and a distance between the first point and the second point. The survey unit determines the first point and/or the second point during the movement of the vehicle in the moving direction such that the angle difference between the first angle and the second angle becomes close to 90°.

Abstract: An automatic operation vehicle that automatically performs an operation in an operation area is provided. The vehicle includes an image analysis unit configured to extract a marker included in an image captured by a camera provided on the automatic operation vehicle. If a situation in which the marker that was extracted from the image captured by the camera cannot be extracted by the image analysis unit from the image captured by the camera has occurred during a movement of the automatic operation vehicle in a constant direction. The image analysis unit determines whether the marker extracted before an occurrence of the situation and the marker extracted after an elimination of the situation are the same marker.

Abstract: A snow removal machine including a travel unit frame having travel units, and an auger housing liftable, lowerable and rollable relative to the travel unit frame. The machine also includes: a frame inclination angle detection section for detecting an inclination angle of the travel frame relative to a ground surface; a housing inclination angle detection section for detecting an inclination angle of the auger housing relative to the travel unit frame; and an overall inclination angle evaluation section for evaluating an overall inclination angle of the auger housing relative to the ground surface on the basis of the inclination angles detected by the two detection sections. The two detection sections are provided on a part of the machine which does not make rolling motion together with the auger housing.

Abstract: A snow plow including a control unit for controlling the raising and lowering of an auger housing, a reset switch that can be operated by a worker, and a reset display light that illuminates in conjunction with the turning on of the reset switch. The control unit automatically raises and lowers the auger housing in accordance with the reverse and forward traveling of travel device, and automatically adjusts the auger housing to a horizontal position during forward travel of the travel device upon receiving an on signal from the reset switch. The control unit maintains the illuminated state of the illuminated reset display light according to the turning on of the reset switch, even when the travel device is traveling in reverse, and extinguishes the reset display light upon receiving a termination signal for terminating snow plowing work performed with an auger.