Abstract: A driving assistance device of an embodiment includes a recognizer configured to recognize a surrounding situation of a mobile object, a determiner configured to determine, on the basis of the surrounding situation, whether to prompt a driver of the mobile object to perform a steering operation and whether there is a possibility of a risk occurring for the mobile object, and a notification controller configured to cause a speaker to output a guidance sound prompting the driver of the mobile object to perform a steering operation and a warning sound with respect to the risk on the basis of a result of the determination by the determiner, in which the notification controller causes output modes for the guidance sound and the warning sound to be different from each other.

Abstract: According to an embodiment, a driving assistance device includes a recognizer configured to recognize a surrounding situation of a mobile object, a decider configured to decide whether or not to prompt a driver of the mobile object to perform acceleration or deceleration on the basis of the surrounding situation, and a notification controller configured to cause a speaker to output a notification sound for prompting the driver of the mobile object to perform the acceleration or deceleration on the basis of a decision result. The notification sound is a notification sound obtained by continuously changing a structure of a sound.

Abstract: A driving assistance device includes a storage medium configured to store computer-readable instructions, and a processor connected to the storage medium, in which the processor executes the computer-readable instructions to determine whether to urge a driver of a mobile object to accelerate or decelerate on the basis of a state of the mobile object, to cause a speaker to output a notification sound urging the driver of the mobile object to accelerate or decelerate on the basis of a result of the determination, to cause the speaker to output a fundamental sound when causing the speaker to output the notification sound, and then cause the speaker to output one or more additional sounds whose pitch is different from a pitch of the fundamental sound, and to cause the speaker to output the one or more additional sounds whose pitch is higher than the pitch of the fundamental sound when the driver of the mobile object is urged to accelerate.

Abstract: A path forming device for forming a part of a series of article conveying passage and opening a path for passing through when a worker crosses the article conveying passage, the path forming device including: a fixed side conveyor device located at a constant height position; a movable side conveyor device; a lifting and lowering function that lifts and lowers the movable side conveyor device; and a linear movement function that linearly moves the movable side conveyor device, wherein the movable side conveyor device is capable of taking: an article conveying posture in which the movable side conveyor device protrudes from the fixed side conveyor device in a cantilever state, and is linearly aligned with the fixed side conveyor at substantially the same height as the fixed side conveyor; and a path opening posture in which a height of the movable side conveyor device is lowered by the lifting and lowering function, the movable side conveyor device is made to move to the fixed side conveyor device by the linea

Abstract: A path forming device for forming a part of a series of article conveying passage and opening a path for passing through when a worker crosses the article conveying passage, the path forming device including: a fixed side conveyor device located at a constant height position; a movable side conveyor device; a lifting and lowering function that lifts and lowers the movable side conveyor device; and a linear movement function that linearly moves the movable side conveyor device, wherein the movable side conveyor device is capable of taking: an article conveying posture in which the movable side conveyor device protrudes from the fixed side conveyor device in a cantilever state, and is linearly aligned with the fixed side conveyor at substantially the same height as the fixed side conveyor; and a path opening posture in which a height of the movable side conveyor device is lowered by the lifting and lowering function, the movable side conveyor device is made to move to the fixed side conveyor device by the linea

Abstract: A transfer device is configured by a conveying part and a lifting part both fixed to a casing. The conveying part forms a latticework by two groups of rollers aligned in a first direction and a second direction in matrix and includes chains for rotating the group of rollers aligned in the first direction and the group of rollers aligned in the second direction per group and driving devices for conveyance. The lifting part includes a driving device for lifting, rectilinearly-movable members for performing a rectilinear motion, and converting members for converting the rectilinear motion of the rectilinearly-movable member to a rotational motion and further to a lifting motion so as to transmit the lifting motion to the rollers. The converting members are arranged at the respective lattice points to lift up and down either group of rollers concurrently, which form a flat surface to convey articles.

Abstract: A transfer device is configured by a conveying part and a lifting part both fixed to a casing. The conveying part forms a latticework by two groups of rollers aligned in a first direction and a second direction in matrix and includes chains for rotating the group of rollers aligned in the first direction and the group of rollers aligned in the second direction per group and driving devices for conveyance. The lifting part includes a driving device for lifting, rectilinearly-movable members for performing a rectilinear motion, and converting members for converting the rectilinear motion of the rectilinearly-movable member to a rotational motion and further to a lifting motion so as to transmit the lifting motion to the rollers. The converting members are arranged at the respective lattice points to lift up and down either group of rollers concurrently, which form a flat surface to convey articles.