A small industrial electronic imaging camera comprising: a lens mount which comprises an imaging window and forms a front face part of a box-type camera housing having a hexahedral structure wherein the hexahedral structure also has a back face part formed in a plane parallel to a plane in which the lens mount is formed; a sensor board which is fixed to the lens mount and mounts a solid-state imaging element; a control board which is contained in the imaging chamber and controls driving of the solid-state imaging element mounted on the sensor board; and a power supply board which is contained in the imaging chamber and controls supply of an operation power to the sensor board and control board, characterized by a tri-face cover having a rectangular U-shaped cross-section which is configured to be attached to the lens mount with edges switched in relation to edges of the lens mount about a vertical axis parallel to an optical axis of the imaging window and is configured to be assembled in two or more configurations including at least a first configuration in which the tri-face cover forms arbitrary three side face parts of the camera housing excluding a back face part and a second configuration in which the tri-face cover forms arbitrary three side face parts of the camera housing or forms arbitrary two side face parts and a back face part of the camera housing, a board mount frame which comprises a board mount mechanism containing and supporting the control and power supply boards (21, 22) in the solid state imaging element and is attached to the lens mount thereby forming an arbitrary side face part of the camera housing, a connector metal bracket which is attached to the lens mount and forms an arbitrary side face part or the back face part of the camera housing; and an external interface connector which comprises an external connection terminal for connecting an external interface cable, and is attached to the connector metal bracket, with the external connection terminal exposed to outside, wherein the control board and the power supply board form a POP board having a double board structure in which the control and power supply boards (21, 22) are integrally connected and circuited to each other by soldering by a plurality of resin core solder balls having a columnar shape whose center part swells, with a predetermined gap maintained between mutually opposed board faces of the control and power supply boards (21, 22). a lens mount which comprises an imaging window and forms a front face part of a box-type camera housing having a hexahedral structure wherein the hexahedral structure also has a back face part formed in a plane parallel to a plane in which the lens mount is formed; a sensor board which is fixed to the lens mount and mounts a solid-state imaging element; a control board which is contained in the imaging chamber and controls driving of the solid-state imaging element mounted on the sensor board; and a power supply board which is contained in the imaging chamber and controls supply of an operation power to the sensor board and control board, characterized by a tri-face cover having a rectangular U-shaped cross-section which is configured to be attached to the lens mount with edges switched in relation to edges of the lens mount about a vertical axis parallel to an optical axis of the imaging window and is configured to be assembled in two or more configurations including at least a first configuration in which the tri-face cover forms arbitrary three side face parts of the camera housing excluding a back face part and a second configuration in which the tri-face cover forms arbitrary three side face parts of the camera housing or forms arbitrary two side face parts and a back face part of the camera housing, a board mount frame which comprises a board mount mechanism containing and supporting the control and power supply boards (21, 22) in the solid state imaging element and is attached to the lens mount thereby forming an arbitrary side face part of the camera housing, a connector metal bracket which is attached to the lens mount and forms an arbitrary side face part or the back face part of the camera housing; and an external interface connector which comprises an external connection terminal for connecting an external interface cable, and is attached to the connector metal bracket, with the external connection terminal exposed to outside, wherein the control board and the power supply board form a POP board having a double board structure in which the control and power supply boards (21, 22) are integrally connected and circuited to each other by soldering by a plurality of resin core solder balls having a columnar shape whose center part swells, with a predetermined gap maintained between mutually opposed board faces of the control and power supply boards (21, 22).