Abstract: A relay in which a relay body and a light source are incorporated in a case, the light source emitting light in conjunction with operation of the relay body, wherein a light guide is provided inside an outer surface of the case, the light guide is configured to take in the light emitted from the light source, to guide the light to a portion parallel to a top panel of the case, and to spread the light in the portion parallel to the top panel, and an optical pattern is provided in at least one of a top surface and a bottom surface of the portion parallel to the top panel, the optical pattern is configured to output, the light guided in the light guide to the portion parallel to the top panel, to outside the case from a top surface of the top panel.

Abstract: A switch unit has an operation key, a cover member having an opening corresponding to the operation key, and a light emitting device disposed on a rear surface side of the cover member that makes the periphery of the operation key luminous by irradiation with light from a light emitting portion disposed on the periphery of the operation key. A top surface side of the operation key is inserted from the rear surface side of the cover member into the opening. An opposing-mirror portion is disposed on the cover member on at least a peripheral part of the operation key. The opposing-mirror portion has a half-mirror portion and a mirror portion spaced apart from the half-mirror portion with a space therebetween. The half-mirror portion is disposed above the mirror portion. The light emitting portion of the light emitting device faces the space between the half-mirror portion and the mirror portion.

Abstract: A surface illumination device has a light source, and a light guide plate having a light-emitting surface. The light guide plate guides light from the light source such that the light is emitted from a display region of the light-emitting surface. A plurality of deflection patterns having deflection inclined surfaces are formed in the display region in at least one of the light-emitting surface of the light guide plate and an opposite surface to the light-emitting surface. A light control structure that reduces light is provided on at least part of at least one of the light-emitting surface of the light guide plate and a surface except the opposite surface to the light-emitting surface, the light being reflected toward the display region by the surface.

Abstract: A surface illumination device has a light source, a light guide plate that has a light-emitting surface and an opposite surface opposite to the light-emitting, wherein the light guide plate emits light introduced from the light source from a display region of the light-emitting surface, and a plurality of deflection patterns that are formed in the display region in at least one of the light-emitting surface and the opposite surface. The display region has a certain drawing pattern expressed by a set of the deflection patterns. Some of the plurality of deflection patterns are arrayed along an edge of the certain drawing pattern so as to rim the certain drawing pattern.

Abstract: A switch module with lighted key has a cover sheet having an adhesive layer on a rear surface, a dome-shaped contact spring adhered on a rear surface of the cover sheet by the adhesive layer, a substrate including a fixed contact switched to an electrically conducted state or an insulated state with the contact spring, and a light guide sheet arranged on a front surface side of the cover sheet. One or more recesses are formed in a region facing the contact spring of at least one of a front surface and a rear surface of the light guide sheet so as not to penetrate toward a surface on an opposite side.

Abstract: An optical device for an optical element to control a light path about emission light emitted from the optical element to external or incident light entered from external to the optical element, which includes a light reflecting member, a resin member covering a light reflection surface of the light reflecting member, and a bumper member interposed between the light reflecting member and the resin member. The resin member is provided with a boundary surface for almost totally reflecting light deviated from a predetermined region in front of the optical element, and the boundary surface of the resin member or the light reflecting member is so disposed that light deviating from the predetermined region in front of the optical element and passing between the optical element and an external of the optical device is reflected more than once with each of the boundary surface and the light reflecting member.

Abstract: An optical device for an optical element to control a light path about emission light emitted from the optical element to external or incident light entered from external to the optical element, which includes a light reflecting member, a resin member covering a light reflection surface of the light reflecting member, and a bumper member interposed between the light reflecting member and the resin member. The resin member is provided with a boundary surface for almost totally reflecting light deviated from a predetermined region in front of the optical element, and the boundary surface of the resin member or the light reflecting member is so disposed that light deviating from the predetermined region in front of the optical element and passing between the optical element and an external of the optical device is reflected more than once with each of the boundary surface and the light reflecting member.

Abstract: This disclosure relates to a formed body having activated carbon granules bondedly carried by an inorganic substance body consisting of a sintered body or fused body of inorganic substance powder. The formed body preferably is of a honeycombed structure. The formed body is not only high in strength, excellent in absorbing ability, long in service life, but also permits of molding into various shapes fit for uses. The invention also relates to a method of producing the formed body of the type described above. The method essentially follows the conventional ceramic firing art or ceramic production art.