Lightning strike suppression type lightning protection device and lightning arrestor

Abstract

The occurrence of an upward streamer is effectively suppressed by reducing a positively charged region formed around a lightning protection device as much as possible. The lightning protection device includes: an inner electrode body 2 which is grounded; an outer electrode body 3 which is provided so as to enclose the inner electrode body 2 with a predetermined gap G from the inner electrode body 2; an electrical insulator S which is provided in the gap G to hold the inner electrode body 2 and the outer electrode body 3 in a state of being electrically insulated from each other; and a support body for the inner electrode body, in which the inner electrode body 2 is formed in a substantially spherical shape, the outer electrode body 3 is formed in a spherical shell shape similar to an outer surface shape of the inner electrode body 2, and substantially an entire surface of the inner electrode body 2 is covered by the outer electrode body 3.

Dependencies are inferred from the claim text.