Patent ID: 7396140

Claim:
A portable reading lamp, comprising a base; a head portion provided with a luminant; and a telescopic pole to connect the base with the head portion, wherein a battery box is provided on the base, or the head portion or the pole for supplying direct current; wherein the head portion and the pole are connected by a first turning structure and the first turning structure comprises: a threaded turning shaft with two through holes which connected with the head portion; two bolts connected with the pole; wherein the threaded turning shaft is connected with the head portion through a friction patch, a dishing spring, a lock washer and a screw cap hitched thereon; one of the bolt is connected with the threaded turning shaft through a friction patch, a dishing spring, a lock cushion and a screw cap hitched thereon; the other bolt is connected with the threaded turning shaft through the block spring hitched thereon.