Abstract: A device for emitting ultraviolet light includes at least one excimer lamp and a housing for the excimer lamp(s). Each excimer lamp has a discharge vessel filled with light-emitting gases, and a pair of first and second electrodes that are placed in contact with the discharge vessel and produce a dielectric barrier discharge inside the discharge vessel. The housing is made of an insulating and heat-resistant resin material. The housing is configured to house the excimer lamp(s), and has a light-emitting window that allows light with a center wavelength in a range from 200 nm to 230 nm emitted from the excimer lamp(s) to exit from the housing.

Abstract: A ultraviolet irradiation apparatus includes: a first electrode block and a second electrode block located apart from each other in a first direction or located in an electrically-insulated state in the first direction; a recessed groove formed on a side surface of each of both the blocks; a first discharge lamp partially fitted into the recessed grooves formed in both the blocks and located across the both blocks; a power supply part for supplying electrical power to the first discharge lamp; a first current-carrying member electrically connecting the first electrode block and the power supply part; a second current-carrying member capable of electrically connecting the second electrode block and the power supply part at an electrical potential different from that of the first current-carrying member; and a light irradiation window for extracting ultraviolet light emitted from the first discharge lamp to outside.

Abstract: A device for emitting ultraviolet light includes at least one excimer lamp and a housing for the excimer lamp(s). Each excimer lamp has a discharge vessel filled with light-emitting gases, and a pair of first and second electrodes that are placed in contact with the discharge vessel and produce a dielectric barrier discharge inside the discharge vessel. The housing is made of an insulating and heat-resistant resin material. The housing is configured to house the excimer lamp(s), and has a light-emitting window that allows light with a center wavelength in a range from 200 nm to 230 nm emitted from the excimer lamp(s) to exit from the housing.

Abstract: A device for emitting ultraviolet light includes at least one excimer lamp and a housing for the excimer lamp(s). Each excimer lamp has a discharge vessel filled with light-emitting gases, and a pair of first and second electrodes that are placed in contact with the discharge vessel and produce a dielectric barrier discharge inside the discharge vessel. The housing is made of an insulating and heat-resistant resin material. The housing is configured to house the excimer lamp(s), and has a light-emitting window that allows light with a center wavelength in a range from 200 nm to 230 nm emitted from the excimer lamp(s) to exit from the housing.

Abstract: A device for emitting ultraviolet light includes at least one excimer lamp and a housing for the excimer lamp(s). Each excimer lamp has a discharge vessel filled with light-emitting gases, and a pair of first and second electrodes that are placed in contact with the discharge vessel and produce a dielectric barrier discharge inside the discharge vessel. The housing is made of an insulating and heat-resistant resin material. The housing is configured to house the excimer lamp(s), and has a light-emitting window that allows light with a center wavelength in a range from 200 nm to 230 nm emitted from the excimer lamp(s) to exit from the housing.

Abstract: A ultraviolet irradiation apparatus includes: a first electrode block and a second electrode block located apart from each other in a first direction or located in an electrically-insulated state in the first direction; a recessed groove formed on a side surface of each of both the blocks; a first discharge lamp partially fitted into the recessed grooves formed in both the blocks and located across the both blocks; a power supply part for supplying electrical power to the first discharge lamp; a first current-carrying member electrically connecting the first electrode block and the power supply part; a second current-carrying member capable of electrically connecting the second electrode block and the power supply part at an electrical potential different from that of the first current-carrying member; and a light irradiation window for extracting ultraviolet light emitted from the first discharge lamp to outside.

Abstract: An ozone generation device has a casing; a wall body partitioning a space surrounded by the casing into at least a first chamber and a second chamber; a first opening and a second opening provided in a part of the casing to communicate an outer side of the casing and the first chamber; a blower communicating the first chamber and the second chamber; a third opening provided in a part of the casing to communicate the outer side of the casing and the second chamber; a light source body provided between the blower and the third opening in the second chamber and configured to emit ultraviolet light; and an electrical body provided in a position between the first opening and the second opening in the first chamber and configured to supply electric power for driving the light source body.

Abstract: An ozone generation device has a casing; a wall body partitioning a space surrounded by the casing into at least a first chamber and a second chamber; a first opening and a second opening provided in a part of the casing to communicate an outer side of the casing and the first chamber; a blower communicating the first chamber and the second chamber; a third opening provided in a part of the casing to communicate the outer side of the casing and the second chamber; a light source body provided between the blower and the third opening in the second chamber and configured to emit ultraviolet light; and an electrical body provided in a position between the first opening and the second opening in the first chamber and configured to supply electric power for driving the light source body.

Abstract: A light source unit includes a plurality of LED elements disposed on a plurality of band-shaped wirings on a substrate. The LED elements on one band-shaped wiring are electrically connected by wires to an adjacent band-shaped wiring. The LED elements are disposed on the substrate in a staggered arrangement as a whole. The LED elements can be densely disposed without poor connection occurring in the wires connected to the band-shaped wirings, and effective cooling can be carried out without impeding the dissipation of heat from the LED elements. One or more damming channels are formed between each two adjacent LED elements on each band-shaped wiring. A non-effusion region is formed, into which no solder flows, between each two adjacent LED elements. The wires are connected to the non-effusion regions.

Abstract: A light source unit includes a plurality of LED elements disposed on a plurality of band-shaped wirings on a substrate. The LED elements on one band-shaped wiring are electrically connected by wires to an adjacent band-shaped wiring. The LED elements are disposed on the substrate in a staggered arrangement as a whole. The LED elements can be densely disposed without poor connection occurring in the wires connected to the band-shaped wirings, and effective cooling can be carried out without impeding the dissipation of heat from the LED elements. One or more damming channels are formed between each two adjacent LED elements on each band-shaped wiring. A non-effusion region is formed, into which no solder flows, between each two adjacent LED elements. The wires are connected to the non-effusion regions.

Abstract: Heat-sensitive recording sheet comprising a heat-sensitive color developing layer having particular chemicals on the support sheet and an overcoat layer laminated thereon and a backcoat layer on the back of the support sheet, wherein the sheet provides excellent coloring characteristics and high stability in storage.