Abstract
Antenna type Omni-Winker is proposed as an indicator for omnidirectional vehicles in a room with obstacles, where the antenna type Omni-Winker expresses locomotive behavior such as the direction and speed of the vehicle to all human around the vehicles by using posture, color, and blinking indication. The proposed Omni-Winker shows up to 95.6% of recognition rate in behavior expression experiments. The Omni-Winker encourages human-robot co-existing in a limited space with obstacles like house space.