Display device for a bicycle

A bicycle, comprising:

• a rear wheel and a front wheel that is steerable by a user;
• a seat, on which the user can sit;
• a handlebar for controlling the front wheel;
• at least one radar sensor arranged in a rear region configured to monitor a rear surrounding region at a back at least in regions for the presence of at least one further road user;
• a control/regulating device connected to the at least one radar sensor in a data-transmitting manner for receiving sensor data generated by the at least one radar sensor;
• at least one display device arranged on the handlebar, the at least one display device including a carrier and a plurality of controllable luminous elements arranged on the carrier;
• wherein the at least one display device is connected wirelessly or by wire to the control/regulating device, so that the control/regulating device can control the plurality of luminous elements as a function of the sensor data received;
• and
• wherein the carrier includes an annular or hollow-cylindrical geometry and is structured in two parts for mounting on the handlebar and includes two ring segment-shaped carrier elements, the two ring segment-shaped carrier elements connected to one another in an articulated manner via a hinge and adjustable between a closed position where the two carrier elements enclose an annular opening, and an open position where the two carrier elements are mountable on the handlebar or demountable from the handlebar.

A method for operating a bicycle, comprising:

• monitoring a surrounding rear region of the bicycle via at least one radar sensor;
• transmitting sensor data from the at least one radar sensor to a control/regulating device;
• controlling via the control/regulating device at least one of a plurality of luminous elements of at least one display device such that regarding to the emission of light the at least one luminous element changes its previous state when via the at least one radar sensor a change of status regarding a road user behind the bicycle has been detected and the sensor data corresponding to the change of status are transmitted to the control/regulating device by the at least one radar sensor;
• the control/regulating device for switching-on/switching-off/switching-over of the at least one luminous element controls the at least one display device arranged on a left handle of a handlebar when via the at least one radar sensor it has been detected that the detected road user is situated in a laterally left region behind the bicycle;
• the control/regulating device for the switching-on/switching-off/switching-over of the at least one luminous element controls the at least one display device arranged on a right handle when via the at least one radar sensor it has been detected that the detected road user is situated in a laterally right region behind the bicycle;
• and
• the control/regulating device for the switching-on/switching-off/switching-over of the at least one luminous element controls both the at least one display device arranged on the left handle and the at least one display device arranged on the right handle when via the at least one radar sensor it has been detected that the road user is situated in a middle region between the left region and the right region behind the bicycle.

A bicycle, comprising:

• at least one radar sensor configured to monitor a rear surrounding region;
• at least one display device including a carrier and a plurality of controllable luminous elements arranged on the carrier;
• a control/regulating device connected to the at least one radar sensor in a data-transmitting manner for receiving sensor data generated by the at least one radar sensor, wherein the control/regulating device is configured to control at least one of the plurality of luminous elements of the at least one display device such that regarding to the emission of light the at least one luminous element changes its previous state when via the at least one radar sensor a change of status regarding a road user in the rear surrounding region has been detected and the sensor data corresponding to the change of status are transmitted to the control/regulating device by the at least one radar sensor;
• and
• wherein the carrier includes an annular or hollow-cylindrical geometry and is structured in two parts for mounting on the handlebar and includes two ring segment-shaped carrier elements, the two ring segment-shaped carrier elements connected to one another in an articulated manner via a hinge and adjustable between a closed position where the two carrier elements enclose an annular opening, and an open position where the two carrier elements are mountable on the handlebar or demountable from the handlebar.