HEADPHONE UNIT, A PAIR OF HEADPHONE UNITS, HEADPHONE DEVICE, AND HEADPHONE SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a headphone device that allows a user to easily view videos and such on the move by vehicle or outside home.SOLUTION: The headphone device includes: a left speaker part 30 for outputting a voice; an image projection part 31 for projecting an image against an object; a motion sensor 28 capable of detecting a user's finger movement; and a control part for detecting the user's finger movement on the basis of a user's finger position detected with the motion sensor 28 and controlling on the basis of the user's finger movement so that the image projection part 31 performs a predetermined action.SELECTED DRAWING: Figure 1