Wiktionary
light globe
n. 1 (context Australia English) light bulb. 2 A nearly evacuated glass globe containing ionized gas, which produces lightning-like patterns when touched.
Usage examples of "light globe".
The Lady Maelen held forth the light globe which had guided them through the mountain passage, and that gathered to it the ring's glory until she had cupped a great ball of fire.
Wiz sent the light globe floating in and examined it carefully before he motioned the others forward.
A single light globe cast its paltry glow over the quay, in contrast to the galaxy of lights illuminating from the shipyard, lighting up the front of small buildings that Pitt had memorized from the satellite photo as tool sheds.