Abstract: There is provided a lighting device includes a first frame, on which a light source unit is mounted, a second frame disposed at a front of the first frame and holding a lens, and a third frame disposed between the first frame and the second frame. The first frame and the second frame are fixed to each other to configure an integral main frame, and the third frame and the main frame are connected to each other via an elastic deformation part to be displaceable relatively in a front-rear direction at a connecting position.

Abstract: There is provided a lighting device includes a first frame, on which a light source unit is mounted, a second frame disposed at a front of the first frame and holding a lens, and a third frame disposed between the first frame and the second frame. The first frame and the second frame are fixed to each other to configure an integral main frame, and the third frame and the main frame are connected to each other via an elastic deformation part to be displaceable relatively in a front-rear direction at a connecting position.

Abstract: A sidelight type spread illuminating apparatus includes a light guiding plate; a plurality of circuit boards arranged so as to face a side end face of the light guiding plate; a light source mounted on the circuit boards; and a connector that electrically connects the circuit boards adjacent to each other. The connector includes a socket and a plug that are removable therebetween. The socket and the plug are configured to be removable in a direction parallel to each mounting surface of the light sources of the circuit boards in a state that either the socket or the plug is fixed to ends of the circuit boards adjacent to each other.

Abstract: There is provided an illuminator comprising a plurality of light source units that include: a light guide plate; and a plurality of point light sources arranged on a lateral side of the light guide plate, each of the light source units being configured as that light introduced from the plurality of point light sources to the light guide plate is adapted to exit from a main surface of the light guide plate, wherein the plurality of light source units are radially positioned at a reference point of the base frame.

Abstract: A sidelight type spread illuminating apparatus includes a light guiding plate; a plurality of circuit boards arranged so as to face a side end face of the light guiding plate; a light source mounted on the circuit boards; and a connector that electrically connects the circuit boards adjacent to each other. The connector includes a socket and a plug that are removable therebetween. The socket and the plug are configured to be removable in a direction parallel to each mounting surface of the light sources of the circuit boards in a state that either the socket or the plug is fixed to ends of the circuit boards adjacent to each other.

Abstract: There is provided an illuminator comprising a plurality of light source units that include: a light guide plate; and a plurality of point light sources arranged on a lateral side of the light guide plate, each of the light source units being configured as that light introduced from the plurality of point light sources to the light guide plate is adapted to exit from a main surface of the light guide plate, wherein the plurality of light source units are radially positioned at a reference point of the base frame.

Abstract: A spread illuminating apparatus includes a point light source, a light conductor plate having a light inlet surface facing the point light source, and a housing frame to hold the point light source and the light conductor plate, wherein the housing frame includes an inner frame member and an outer frame member to enclose the inner frame member, the point light source is disposed at an end wall of the outer frame member, the light conductor plate is held in the inner frame member by joint mechanisms such that the light inlet surface of the light conductor plate is positioned inward of a forefront face of the inner frame member with a predetermined distance therefrom, and wherein the inner frame member is housed in the outer frame member with a predetermined constant clearance provided between the point light source and the light inlet surface of the light conductor plate.

Abstract: In a spread illuminating apparatus, at least one point light source is disposed at an end wall of an outer frame member, and a subassembly is constituted by a light conductor plate and an inner frame member via first joint means. The subassembly has interface surfaces to make contact with the end wall of the outer frame member, a light inlet face of the light conductor plate is positioned to recede from the interface surface by a predetermined dimension, the first joint means each includes a elastic member to press the light conductor plate toward the interface surfaces, and the subassembly is jointed to the outer frame member via second joint means each constituted by an elastic member to press the interface surfaces toward the end wall of the outer frame member.

Abstract: A spread illuminating apparatus includes a point light source, a light conductor plate having a light inlet surface facing the point light source, and a housing frame to hold the point light source and the light conductor plate, wherein the housing frame includes an inner frame member and an outer frame member to enclose the inner frame member, the point light source is disposed at an end wall of the outer frame member, the light conductor plate is held in the inner frame member by joint mechanisms such that the light inlet surface of the light conductor plate is positioned inward of a forefront face of the inner frame member with a predetermined distance therefrom, and wherein the inner frame member is housed in the outer frame member with a predetermined constant clearance provided between the point light source and the light inlet surface of the light conductor plate.

Abstract: In a spread illuminating apparatus, at least one point light source is disposed at an end wall of an outer frame member, and a subassembly is constituted by a light conductor plate and an inner frame member via first joint means. The subassembly has interface surfaces to make contact with the end wall of the outer frame member, a light inlet face of the light conductor plate is positioned to recede from the interface surface by a predetermined dimension, the first joint means each includes a elastic member to press the light conductor plate toward the interface surfaces, and the subassembly is jointed to the outer frame member via second joint means each constituted by an elastic member to press the interface surfaces toward the end wall of the outer frame member.