Abstract: A remote monitoring system includes a remote monitoring apparatus and a network server. The network server is configured to request, a) when there is no missing portion in an operating state obtained from the remote monitoring apparatus until now, the remote monitoring apparatus to transmit an operating state newly recorded after previous obtainment of the operating state. The network server is configured to request, b) when there is a missing portion in the operating state obtained from the remote monitoring apparatus until now, the remote monitoring apparatus to transmit the operating state newly recorded after previous obtainment of the operating state and the missing portion that remains in a storage device.

Abstract: A device includes a housing including a rail mount and a stopper to lock an engagement flange (RAb) on a DIN rail (RA) with the rail mount receiving the DIN rail (RA). A locking member is at a locking position to lock an engagement flange (RAb) on the DIN rail (RA) and at a release position to unlock the engagement flange (RAb) with the rail mount receiving the DIN rail (RA). A release button including a pressing portion to be pressed by a user is located in the housing with the pressing portion exposed outside the housing. An arm moves the locking member from the locking position to the release position in response to movement of the release button from a standby position to a pressed position deeper in the housing than the standby position.

Abstract: A device includes a housing including a rail mount and a stopper to lock an engagement flange (RAb) on a DIN rail (RA) with the rail mount receiving the DIN rail (RA), a locking member to be at a locking position to lock an engagement flange (RAb) on the DIN rail (RA) and at a release position to unlock the engagement flange (RAb) with the rail mount receiving the DIN rail (RA), a release button including a pressing portion to be pressed by a user and located in the housing with the pressing portion exposed outside the housing, and an arm to move the locking member from the locking position to the release position in response to movement of the release button from a standby position to a pressed position deeper in the housing than the standby position.

Abstract: An operation device includes a case, a control board accommodated in the case, and a protective cover for protecting the control board. The protective cover includes a terminal plate, a first dent located on a side of the protective cover opposite to a control board side of the protective cover and having a bottom provided with the terminal, a first groove having a +Z direction end open to the outside of the case through an inlet cutout in the case and a ?Z direction end toward an edge of the protective cover opposite to the cutout, and a second groove having an end communicating with the first groove and the other end communicating with the first dent. The other end of the second groove is nearer an edge of the protective cover adjacent to the cutout than the end of the second groove.

Abstract: An operation device includes a control board, a case, a base member, and a protective cover located inside the case and protecting the control board by separating, inside the case, a space defined by the base member and the case into a first space for the control board and a second space exposed to the base member. The base member has an annular rib surrounding an installation hole. The protective cover has, on a surface facing the base member, a recess in an area corresponding to the rib. The rib is fitted in the recess with a leading edge in contact with the bottom of the recess. A screw inserted in the hole has a head inside a third space defined by the rib and the bottom of the recess.

Abstract: A controller includes a control board, a transmitting board, a display board, and a USB board. A modular jack is arranged at a position on one surface of the transmitting board, the surface on which the modular jack is arranged faces the control board, and the position of the modular jack is not covered by the control board. A switch is arranged at a position on one surface of the control board, the surface on which the switch is arranged faces the display board and the USB board, and the position of the switch is not covered by the display board and the USB board.

Abstract: An operation device includes a case, a control board accommodated in the case, and a protective cover for protecting the control board. The protective cover includes a terminal plate, a first dent located on a side of the protective cover opposite to a control board side of the protective cover and having a bottom provided with the terminal, a first groove having a +Z direction end open to the outside of the case through an inlet cutout in the case and a ?Z direction end toward an edge of the protective cover opposite to the cutout, and a second groove having an end communicating with the first groove and the other end communicating with the first dent. The other end of the second groove is nearer an edge of the protective cover adjacent to the cutout than the end of the second groove.

Abstract: An operation device includes a control board, a case, a base member, and a protective cover located inside the case and protecting the control board by separating, inside the case, a space defined by the base member and the case into a first space for the control board and a second space exposed to the base member. The base member has an annular rib surrounding an installation hole. The protective cover has, on a surface facing the base member, a recess in an area corresponding to the rib. The rib is fitted in the recess with a leading edge in contact with the bottom of the recess. A screw inserted in the hole has a head inside a third space defined by the rib and the bottom of the recess.

Abstract: A controller includes a control board, a transmitting board, a display board, and a USB board. A modular jack is arranged at a position on one surface of the transmitting board, the surface on which the modular jack is arranged faces the control board, and the position of the modular jack is not covered by the control board. A switch is arranged at a position on one surface of the control board, the surface on which the switch is arranged faces the display board and the USB board, and the position of the switch is not covered by the display board and the USB board.

Abstract: A video projection device includes an optical engine which projects video light, an aspherical mirror which reflects the video light projected by the optical engine with a reflective surface formed in a rotationally symmetrical shape centering on an optical axis, a reflective screen on which the video light reflected by the aspherical mirror is projected, a shielding housing which houses the optical engine, the aspherical mirror, and an electric circuit portion which electrically drives the optical engine, and a strut member which connects a rear surface portion of the shielding housing, and a rear surface portion of the reflective screen in a state where the rear surface portion of the shielding housing and the rear surface portion of the reflective screen are positioned.

Abstract: A video projection device includes an optical engine, a projection lens, a reflection mirror, a non-spherical mirror, a screen, and a cabinet which covers the lower surface and the back surface of the screen. The projection lens and the non-spherical mirror are placed at an approximate center in the leftward and rightward directions of the screen and at a back portion within the cabinet. The reflection mirror is placed at an approximate center in the leftward and rightward directions of the screen and at a front portion within the cabinet. The video projection device further includes projection-unit structural members for integrally coupling the projection lens, the reflection mirror and the non-spherical mirror to each other, thereby forming a projection unit.

Abstract: The size of an image is adjusted without changing the position of the lower side of a screen. An image projection apparatus includes an optical engine that emits image light constituting an image, and a casing having a configuration in which the optical engine is movable in a direction parallel to a path of a bottom light beam of the image light, the bottom light beam being directed toward a lower side of the screen.

Abstract: A video projection device includes an optical engine which projects video light, an aspherical mirror which reflects the video light projected by the optical engine with a reflective surface formed in a rotationally symmetrical shape centering on an optical axis, a reflective screen on which the video light reflected by the aspherical mirror is projected, a shielding housing which houses the optical engine, the aspherical mirror, and an electric circuit portion which electrically drives the optical engine, and a strut member which connects a rear surface portion of the shielding housing, and a rear surface portion of the reflective screen in a state where the rear surface portion of the shielding housing and the rear surface portion of the reflective screen are positioned.

Abstract: A video projection device includes an optical engine, a projection lens, a reflection mirror, a non-spherical mirror, a screen, and a cabinet which covers the lower surface and the back surface of the screen. The projection lens and the non-spherical mirror are placed at an approximate center in the leftward and rightward directions of the screen and at a back portion within the cabinet. The reflection mirror is placed at an approximate center in the leftward and rightward directions of the screen and at a front portion within the cabinet. The video projection device further includes projection-unit structural members for integrally coupling the projection lens, the reflection mirror and the non-spherical mirror to each other, thereby forming a projection unit.

Abstract: A dust-proof enclosure portion which stores therein an emission portion of a projection unit and in which a projection window from which image light is emitted is formed to direct upward, and a cabinet shielding structure which holds a screen on a front side, in which an opening that introduces the image light emitted from the projection window of the projection unit is included, and in which a second reflection mirror that reflects the introduced image light toward the rear surface of the screen is arranged are included, in which a second dust-proof cover is detachably attached to the opening (light introducing and managing opening) of the cabinet shielding structure, the projection window is exposed in a state where the second dust-proof cover is removed, and the cabinet shielding structure is a sealed structure in a state where the second dust-proof cover is attached.

Abstract: A projection-type image display apparatus includes a first reflecting optical element and a second reflecting optical element that are retained on a base. A base-side first positioning unit and a base-side second positioning unit are formed integrally with the base. The base-side first positioning unit abuts against the first reflecting optical element to define a position of the first reflecting optical element. The base-side second positioning unit abuts against the second reflecting optical element to define a position of the second reflecting optical element.

Abstract: An image projection device that includes an optical projection system including: a projection lens arranged with an optical axis thereof shifted with respect to a light modulation device to project the light beam obliquely onto the screen; a flat mirror that reflects the light beam from the projection lens, has a rotation center on a side thereof on which a light beam having a long path from the projection lens to the screen is reflected, rotates around the rotation center and adjusts an angle of the light beam; and a curved mirror that reflects and magnifies the light beam from the flat mirror, has a rotation center on a side thereof on which a light beam having a short path from the projection lens to the screen is reflected, rotates around the rotation center and adjusts the angle of the light beam.

Abstract: A dust-proof enclosure portion which stores therein an emission portion of a projection unit and in which a projection window from which image light is emitted is formed to direct upward, and a cabinet shielding structure which holds a screen on a front side, in which an opening that introduces the image light emitted from the projection window of the projection unit is included, and in which a second reflection mirror that reflects the introduced image light toward the rear surface of the screen is arranged are included, in which a second dust-proof cover is detachably attached to the opening (light introducing and managing opening) of the cabinet shielding structure, the projection window is exposed in a state where the second dust-proof cover is removed, and the cabinet shielding structure is a sealed structure in a state where the second dust-proof cover is attached.

Abstract: A projection-type image display apparatus includes a first reflecting optical element and a second reflecting optical element that are retained on a base. A base-side first positioning unit and a base-side second positioning unit are formed integrally with the base. The base-side first positioning unit abuts against the first reflecting optical element to define a position of the first reflecting optical element. The base-side second positioning unit abuts against the second reflecting optical element to define a position of the second reflecting optical element.