Light device with extensible and retractable bulb unit

摘要

A light device includes a casing, a bulb holding rod, a bulb unit, a power supply unit, a guide device, and a retainer device. The casing includes a bulb receiving recess formed in an external surface thereof, and a slide hole formed in the casing. The holding rod is mounted slidably within the slide hole of the casing and has an inner end located in the casing, and an outer end which extends from the slide hole. The bulb unit is carried pivotally on the outer end of the rod. The power supply unit is installed within the casing and is connected electrically to the bulb unit so as to energize the bulb unit when in use. The guide device prevents rotation of the rod within the slide hole of the casing. The retainer device prevents disengagement of the rod from the slide hole of the casing.