Abstract: The lighting device includes a rod and two or more lighting units superimposing each other. Each of the lighting units includes a housing and a lighting element. The housing has a through hole, a first conductive element, a second conductive element and a positioning mechanism. The through hole is penetrated by the rod so that the housing can turn about the rod. The positioning mechanism limits the lighting units to turn between a first position and a second position. The first conductive elements and second conductive elements of the lighting units make contact at the second position, respectively.

Abstract: The lighting device includes a rod and two or more lighting units superimposing each other. Each of the lighting units includes a housing and a lighting element. The housing has a through hole, a first conductive element, a second conductive element and a positioning mechanism. The through hole is penetrated by the rod so that the housing can turn about the rod. The positioning mechanism limits the lighting units to turn between a first position and a second position. The first conductive elements and second conductive elements of the lighting units make contact at the second position, respectively.

Abstract: A wireless brake light and signal indicator for transportation has a front controller mounted on a handlebar of a bicycle, a brake signal generator mounted to a brake lever and connected to the front controller, and a tail signal indicator wirelessly controlled by the front controller. The brake signal generator has an insulation body and two strip electrodes sleeved therein. The strip electrodes are mutually isolated. The insulation body has a resilient portion formed at one end thereof. The strip electrodes are constantly open and located oppositely in the resilient portion. The resilient portion aligns with the force application portion of the brake lever. Once the brake lever is gripped, the resilient portion is compressed so that the strip electrodes are shorted and a brake signal is sent to the front controller. The front controller wirelessly activates a brake light to warn vehicles or pedestrians behind.