Telescopic lantern

A floatable, waterproof and telescopic lantern, comprising:

• a base;
• a telescopic shade;
• a top cover;
• a handle;
• a socket support and a connecting ring;
• wherein the base has a double shell overlapping and cylindrical shape structure and forms the lower part housing of the lantern, the double wall having an inner housing and outer housing and forms a double wall space between the inner and outer housings;
• the telescopic shade is disposed in the double wall space and can be pulled out and pushed in along the double wall, has a transparent side wall and a cover mounted on its top;
• holes is opened on the outside of the top cover and the handle as a pickup-arm movably connects with the top cover through the holes;
• the socket support goes through the opening at the center of the upper cap of the base and can move up and down;
• the connecting ring is mounted on the outside of the upper part of the base and can prevent the telescopic shade from sliding out of the double wall space by means of its upper inward rim, characterized in that said lantern farther includes a waterproof ring, the waterproof ring is disposed in the recess of the lower part of the telescopic shade so as to form a waterproof structure of the lantern;
• a spring socket is formed on the lower part of the socket support and a spring is placed therein;
• and a vent hole is opened at the top of the telescopic shade;
• on the socket support is provided bronze pieces for connecting with the bulb and lower face of the upper cap of the base is provided with bronze pieces so as to form a contact switch circuit together with the base, telescopic shade, socket support and spring, when the telescopic shade is pulled up and the socket support is pushed to its highest position by spring force, the bronze pieces on the socket support will contact the bronze pieces on the lower face of the upper cap of the base so that the circuit is turn-on and the bulb light-on, at this time, the position of the top cap of the telescopic shade is higher than the top of the socket support;
• and when the telescopic shade is pushed down, its top cap will press the socket support down and make the support separate from the upper cap of the base, thus the circuit is turn-off and the bulb light-off, at this time the spring is in a pressed state.