A lighting apparatus includes an apparatus body for supporting an LED lamp having an earth cap, an earth socket to which the earth cap of the LED lamp is mounted, and an attachment base provided in the apparatus body, the earth socket being attached to the attachment base. The earth socket includes a conductor plate for mechanically holding a lamp pin of the earth cap, the conductor plate being electrically connected to the lamp pin. The attachment base and the earth socket include a connecting unit for earth-connecting the conductor plate of the earth socket and the apparatus body.