Telescopic pipe structure for a marine light

A telescopic pipe structure for a marine light, comprising a telescopic pipe and a positioning device, the telescopic pipe comprising a second pipe and a fixed pipe, the fixed pipe having an outer threaded portion at an upper end thereof for insertion of a lower section of the second pipe, the positioning device being adapted for controlling the telescopic pipe in a fixed status or in an adjustable status, the positioning device comprising a rotatable lid, a resilient sleeve, and a metallic ring, and characterized by:

• the rotatable lid being in a cylinder shape and comprising a central accommodating space, a contracted opening at an upper end, an inner threaded portion at a central inner wall, a pair of grooves longitudinally formed at the inner threaded portion, and a skidproof surface around an outer wall thereof;
• the resilient sleeve comprising a central through hole and a flange at an upper end thereof;
• the metallic ring having a central hole;
• thereby, the metallic ring holding against the upper end of the fixed pipe and a lower end of the resilient sleeve, respectively, the rotatable lid being turned clockwise or counterclockwise for changing the second pipe in a fixed status or in an adjustable status.