A lighting apparatus comprising: a control module supplying power; a heat sink receiving the control module an insertion hole formed in the heat sink, a light source mounted on the heat sink and connected to the control module; and a communication module comprising a substrate on which an antenna device and a connection terminal are disposed, wherein the substrate comprises a connection region on which the connection terminal is disposed and received into the heat sink, and an antenna region on which the antenna device is disposed and protruded from the heat sink, characterized in that: a light source coupling unit comprises a first coupling hole to fix the light source and a second coupling hole aligned to the insertion hole, the substrate extends by passing through the insertion hole and the second coupling hole in such a way, that the connection terminal is inserted into the heat sink and the antenna device is protruding from the heat sink, and the communication module further comprises a protective cover covering the substrate to receive the antenna device, and exposing the connection terminal wherein the protective cover comprises: a first protective cover inserted into the heat sink; and a second protective cover coupled with the heat sink and protruding from the heat sink and covering the antenna region of the substrate, wherein a width of the second protective cover is wider than a width of the first protective cover. a control module supplying power; a heat sink receiving the control module an insertion hole formed in the heat sink, a light source mounted on the heat sink and connected to the control module; and a communication module comprising a substrate on which an antenna device and a connection terminal are disposed, wherein the substrate comprises a connection region on which the connection terminal is disposed and received into the heat sink, and an antenna region on which the antenna device is disposed and protruded from the heat sink, characterized in that: a light source coupling unit comprises a first coupling hole to fix the light source and a second coupling hole aligned to the insertion hole, the substrate extends by passing through the insertion hole and the second coupling hole in such a way, that the connection terminal is inserted into the heat sink and the antenna device is protruding from the heat sink, and the communication module further comprises a protective cover covering the substrate to receive the antenna device, and exposing the connection terminal wherein the protective cover comprises: a first protective cover inserted into the heat sink; and a second protective cover coupled with the heat sink and protruding from the heat sink and covering the antenna region of the substrate, wherein a width of the second protective cover is wider than a width of the first protective cover. a light source coupling unit comprises a first coupling hole to fix the light source and a second coupling hole aligned to the insertion hole, the substrate extends by passing through the insertion hole and the second coupling hole in such a way, that the connection terminal is inserted into the heat sink and the antenna device is protruding from the heat sink, and the communication module further comprises a protective cover covering the substrate to receive the antenna device, and exposing the connection terminal wherein the protective cover comprises: a first protective cover inserted into the heat sink; and a second protective cover coupled with the heat sink and protruding from the heat sink and covering the antenna region of the substrate, wherein a width of the second protective cover is wider than a width of the first protective cover. a first protective cover inserted into the heat sink; and a second protective cover coupled with the heat sink and protruding from the heat sink and covering the antenna region of the substrate, wherein a width of the second protective cover is wider than a width of the first protective cover.