Patent ID: 8411451

Claim:
A communication apparatus which performs communication through a power line and a transmission medium different from the power line, the communication apparatus comprising: a power board which is provided with a power supply connected to the power line through an electrical plug that is attached to the power board; an interface board which is separately formed from the power board and is provided with an interface for performing communication through the transmission medium; a communication board which is separately formed from the power board and the interface board, and is provided with a power line communicator for performing communication through the power line; a first connector which connects electrically the communication board to the power board and includes a transmission path for a power line communication signal; a second connector which connects electrically the communication board to the interface board, includes a transmission path for a communication signal transmitted and received through the interface board, and is provided at a location away from the first connector; and a heat radiator that radiates heat generated from the communication board, wherein the communication board is substantially perpendicular to both the power board and the interface board, and wherein the heat radiator holds the communication board and is disposed at a location facing the power board so as not to overlap the power plug.