is a configuration diagram illustrating the inside of the image pickup apparatus 100 according to the exemplary embodiment of the present invention the image pickup apparatus 100 broadly includes a camera unit 200 a rotation base unit 300 and a fixing portion unit 400 the camera unit 200 is configured as follows a lens unit 201 has an optical system such as a lens and further has an image pickup device such as a charge coupled device ccd sensor and a complementary metal oxide semiconductor cmos sensor the lens unit 201 is supported by a lens frame unit 202 having a tilt rotation shaft a camera cover 203 for covering the lens unit 201 is attached to the lens frame unit 202 further a tilt pulley 204 which is provided to drive the camera unit 200 so that the camera unit 200 rotates in a tilt direction is fixed to the lens frame unit 202 the rotation base unit 300 is configured as follows a rotation base 301 supports the camera unit 200 while allowing the camera unit 200 to rotate in the tilt direction a tilt motor 302 drives the tilt pulley 204 by using a timing belt so that the camera unit 200 can be rotated in the tilt direction a control board 303 is fixed to the rotation base 301 further a pan motor not illustrated is attached to the rotation base 301 the pan motor rotationally drives the camera unit 200 in a pan direction an inner cover 310 is elastically supported by the rotation base 301 so as to cover the camera unit 200 the rotation base 301 includes spring receiving portions 301 a and stepped screw fixing bosses 301 b the spring.