MODULARLY EXPANDABLE LAMP HOLDER

摘要

A modularly expandable lamp holder comprises first and second assembling surfaces. The first assembling surface has an elongated protrusion formed thereon, which includes a first portion adjacent to the first assembling surface and a second portion remote from the first assembling surface and having a size larger than that of the first portion. The second assembling surface defines an elongated groove therein, which has a configuration matching that of the protrusion. The lamp holder can be mechanically assembled with another lamp holder of this kind by the engagement of the protrusion of the lamp holder and the groove of another lamp holder.