Connection structure of a lamp tube

A connection structure of a lamp tube comprising a multi-sectional lamp tube having a front lamp tube and a rear lamp tube, a locking rod engaged in an interior of the multi-sectional lamp tube, and a buffer structure engaged to a distal end of the locking rod;

• wherein
• the front lamp tube has a front retaining block;
• a center of the front retaining block having a front through hole;
• a rear lamp tube has a buffer structure beside a rear retaining block for forming a tightening buffer section;
• a bottom side of the buffer structure has a locking seat;
• the locking seat is locked to the rear retaining block;
• the locking seat has a threaded hole;
• a threaded section at a distal end of the locking rod has inserted into the threaded hole;
• a predetermined portion in an inner edge of the front retaining block is locked with a confining stud;
• and
• the locking rod is a polygonal embedding section;
• the threaded section of the locking rod is inserted into a resisting block and then is exactly locked to the locking seat of the rear lamp tube;
• the inserted resisting block is exactly buckled to the embedding section of the locking rod, thereby, the locking rod rotating with the resisting block synchronously;
• a head portion of the locking rod has a recess;
• the recess serves to exactly position the confining stud of the front retaining block so as to secure the front lamp tube to rest against the rear lamp tube;
• the buffer structure has two spring washers and a buffer washer between the two spring washers;
• the buffer structure is exactly positioned between the rear retaining block of the rear lamp tube and the locking seat so as to be formed with the tightening buffer section;
• thus, connection structure of a lamp tube having a simple structure is formed.