An LED module substrate (16) includes a substrate main body (20), an LED mounted on one principal of the substrate main body (20), and a contact (23) mounted at an edge of the one plane of the substrate main body (20) and electrically connected to the LED. A cover section covers the LED module substrate (16) in which the contact and the thermal radiation sheet (17) are exposed. A lamp (12) is attached to a socket (13). The socket (13) includes a terminal electrically connected to the contact by the attachment of the lamp. A luminaire main body (14) includes a thermal radiator including a contact surface and a recess. The lamp attached to the socket is brought into contact with and thermally connected to the contact surface. The recess is provided in a position opposed to the terminal of the socket.
