Abstract: The present invention relates to a portable indication system, including an indication device and a control device. The indication device has a cover, a printed circuit board, and an indicator. The control device has an operation interface, a wireless transmission module, and a micro-processor. The indicator has a light transmissive member detachable with the cover and a light emitting member that is assembled inside the light transmissive member. A length of the light emitting member penetrates into the interior of the cover to form a connection portion electrically connected with the printed circuit board, and the rest of length of the light emitting member is located outside the cover to form a projection portion coved by the light transmissive member. This invention is designed with a fast-detached mechanism facilitating users to replace the destructed light emitting member or modify the light emitting member by themselves according to their need.

Abstract: The indication system of the present invention includes an indication device and an activation device. The activation device includes a cover and an activator movable with the cover relatively. Wherein a first sensor is assembled inside the cover to generate a first signal by sensing a horizontal displacement of the activator, a second sensor is assembled inside the cover to generate a second signal by sensing a vertical displacement of the activator, and then a transmission unit transmits the first signal and the second signal to the indication device; the activator is constructed with a combination portion and a control portion separately on two opposite sides. When the control portion is driven by a user to move horizontally or vertically, the combination portion can drive an operation member to be displaced synchronously. The indicator light of the bike is activated synchronously in conjunction with the indication system of present invention.