LIGHTING APPARATUS, ANTENNA UNIT FOR LIGHTING APPARATUS, COMMUNICATION SYSTEM AND TRAFFIC SIGNAL CONTROL APPARATUS

摘要

A lamp apparatus 1 includes an optical unit 2 and a patch antenna 4. The optical unit 2 includes an LED 7 and a substrate 8 having the LED 7 mounted at the front face, and a cover member 9 having visible-light transmittance, spread over the LED 7 at the front. In this optical unit 2 are stored the patch antenna 4 including a patch element 11 and a ground element 12 located at the rear of the patch element 11.