An electric light bulb type light source apparatus, comprising: a light source unit having a void area; a light source drive circuit configured to drive the light source unit; a casing configured to house the light source unit, the casing having a conductive outer case forming a first area in the casing and a translucent cover forming a second area in the casing, the second area being opposed to the first area, the translucent cover being opposed to the conductive outer case; a circuit substrate at least having an antenna mounted thereon, the antenna being configured to receive a radio signal from an outside of the casing, the circuit substrate being housed in the casing, the circuit substrate having a control circuit mounted thereon, the control circuit being configured to at least control the light source drive circuit on the basis of the radio signal received by the antenna; and a sensor including an image sensor, an optical sensor, an ultrasonic sensor, a radiation sensor and/or a temperature sensor, the electric light bulb type light source apparatus being configured to send a radio signal with the antenna to an external apparatus on the basis of the information sensed by the sensor; wherein the light source unit includes a mounting substrate having a light source element mounted thereon, the mounting substrate having a through hole as the void area, a base used for supplying power to the light source unit, the base being disposed on a side of the conductive outer case, which side is opposite to a side on which the translucent cover is provided, wherein the circuit substrate is provided penetrating through the void area in such a manner that the antenna is disposed in the second area, wherein the electric light bulb type light source apparatus is further provided with a support unit, the support unit integrally supporting the light source unit, the sensor, and the base so that the sensor and the light source unit are separated from each other, and the light source unit is disposed between the sensor and the base. a light source unit having a void area; a light source drive circuit configured to drive the light source unit; a casing configured to house the light source unit, the casing having a conductive outer case forming a first area in the casing and a translucent cover forming a second area in the casing, the second area being opposed to the first area, the translucent cover being opposed to the conductive outer case; a circuit substrate at least having an antenna mounted thereon, the antenna being configured to receive a radio signal from an outside of the casing, the circuit substrate being housed in the casing, the circuit substrate having a control circuit mounted thereon, the control circuit being configured to at least control the light source drive circuit on the basis of the radio signal received by the antenna; and a sensor including an image sensor, an optical sensor, an ultrasonic sensor, a radiation sensor and/or a temperature sensor, the electric light bulb type light source apparatus being configured to send a radio signal with the antenna to an external apparatus on the basis of the information sensed by the sensor; wherein the light source unit includes a mounting substrate having a light source element mounted thereon, the mounting substrate having a through hole as the void area, a base used for supplying power to the light source unit, the base being disposed on a side of the conductive outer case, which side is opposite to a side on which the translucent cover is provided, wherein the circuit substrate is provided penetrating through the void area in such a manner that the antenna is disposed in the second area, wherein the electric light bulb type light source apparatus is further provided with a support unit, the support unit integrally supporting the light source unit, the sensor, and the base so that the sensor and the light source unit are separated from each other, and the light source unit is disposed between the sensor and the base.