Patent ID: 6909541

Claim:
A device capable of exchanging image projection directions comprising: an inner body consisted of a right and a left housings, an internal reflector having adjustable angles disposed in the inner body, and a horizontal light permeation aperture; is characterized that: an accommodation tube formed at the rear of the inner body and an upper light permeation aperture formed at the top of the accommodation tube; an outer accommodation barrel disposed with at least two connection openings at the outer periphery thereof; an inner accommodation barrel disposed with a long orifice and an outer connection opening at the outer periphery thereof, and is further flexibly connected into the outer accommodation barrel and fixed around the accommodation tube, wherein the long orifice corresponds to the upper light permeation aperture for forming a path for light beams, and wherein the surface of the accommodation tube of the inner body is provided with protruding portions for tugging, the surface of the inner accommodation barrel is provided with grooves, and the protruding portions are tugged into the grooves to connect the inner accommodation barrel to the inner body.