Abstract: A translucent material substrate is shaped such that high luminous efficiency can be obtained in an organic EL light source in which light is emitted from a translucent material substrate to the atmosphere. The organic EL light source includes a luminescent layer composed of an organic luminescent element, a transparent electrode and a counter electrode, and a translucent material substrate. The translucent material substrate has a truncated quadrangular pyramidal shape having a surface in abutment with the luminescent layer as the bottom face of the shape. The bottom face is formed in the shape of a square in which the length of one side is “b”, and the top face opposite the bottom face is formed in the shape of a square in which the length of one side with respect to the same extending direction as that of the “b”-length side is “a”. In addition, the shape of the translucent material substrate has thickness “c”.

Abstract: In a ceiling fan having a blade surface light, an annular blade surface light including a plurality of LEDs that are light emitters that are continuously placed is secured on a circumference that connects sides near tips of a plurality of rotary blades of the ceiling fan, and the light emitters are lit by a lighting controller only when they are in a predetermined range on a rotation reference circumference. LED devices housing the LEDs that are the light emitters and that are provided with cooling fins are housed in an annular LED case, and the LED case is secured to the rotary blades. Thus, the LEDs radiate heat from the cooling fins provided in the LED devices by rotation of the rotary blades, and they are intermittently lit and extinguished to prevent a temperature increase. The LEDs only in the predetermined range are lit, thereby preventing any uncomfortable feeling when LEDs are caused to flash.

Abstract: A light emitting device includes a light emitting element (LEE) on a mounting board, a metal reflector surrounding the side surfaces of the LEE on the mounting board, a conductor electrically connecting the LEE with the mounting board, and a sealing resin fitted within the reflector to cover and seal the LEE and the conductor. The mounting board includes a metal baseboard, and an insulating board laminated on the base board with a window hole larger than the outer periphery of the LEE. A mount for the LEE is on the base board within the window hole with a clearance defined from window hole side surfaces. The conductor straddles the clearance, and electrically connects the wiring pattern on the insulating board with the LEE and mount. Part of the clearance associated with the area that projects from the conductor to the mounting board is narrower than the remainder.

Abstract: In an illuminating device that includes a cold cathode fluorescent lamp, and a device main body on which the cold cathode fluorescent lamp is disposed, cable connectors to which a power supply cable for supplying an electric power to the illuminating device is connected are provided on a first side surface of the device main body and a second side surface that is opposite to the first side surface.

Abstract: A fluorescent substance capable of remarkably increasing the luminous intensity of a I-III-VI2 chalcopyrite type compound having a large band gap among chalcopyrite type compounds with manganese as luminescence centers, and being favorably used for a lighting device using a light emitting diode, a light emitting element of a display device or the like, a light emitting device such as fluorescent lamps such as a cold cathode fluorescent lamp and a hot cathode fluorescent lamp, as a fluorescent substance generating fluorescence by ultraviolet excitation, is provided. The fluorescent substance is expressed by composition formula (1) Cu(Al1-xGax)(S1-ySey)2:Mn,Si??(1) (wherein x represents a number satisfying 0?x?0.4, and y represents a number satisfying 0?y?0.4), including manganese as a luminescence center atom.

Abstract: A light emitting device includes a light emitting element (LEE) on a mounting board, a metal reflector surrounding the side surfaces of the LEE on the mounting board, a conductor electrically connecting the LEE with the mounting board, and a sealing resin fitted within the reflector to cover and seal the LEE and the conductor. The mounting board includes a metal baseboard, and an insulating board laminated on the base board with a window hole larger than the outer periphery of the LEE. A mount for the LEE is on the base board within the window hole with a clearance defined from window hole side surfaces. The conductor straddles the clearance, and electrically connects the wiring pattern on the insulating board with the LEE and mount. Part of the clearance associated with the area that projects from the conductor to the mounting board is narrower than the remainder.

Abstract: An illuminating device according to the present invention includes light guide plate 1, cold cathode fluorescent lamp 2 disposed to face a rear surface of light guide plate 1, and prism 3 that allows light emitted from cold cathode fluorescent lamp 2 to be incident on light guide plate 1, and prism 3 is disposed in a region inward from an edge of light guide plate 1.

Abstract: Provided is a fluorescent lamp electrode, having excellent sputtering resistance and able to retain excellent dark-start characteristics over a long period of time when used as an electrode in a cold cathode fluorescent lamp, and which can be produced inexpensively. A fluorescent lamp of this invention has a prolonged life resulting from the use of said electrode. Said electrode is made by dispersing in a nickel or nickel alloy base one or more rare earth metals selected from among lanthanum, cerium, yttrium, samarium, praseodymium, niobium, europium and gadolinium in the form of a precipitated boride phase.

Abstract: An external electrode fluorescent lamp includes a glass tube made of soft glass, and external electrodes affixed to outer surfaces of both ends of the glass tube. The fluorescent lamp further includes a joining material applied between at least the glass tube and the external electrodes for affixing the external electrodes, which are made up of a material having a thermal expansion coefficient that is larger than that of the glass tube. According to the manufacturing method of the fluorescent lamp, first, the external electrodes are attached to the outer surface of each end of the glass tube, the external electrodes are then immersed in fused solder, and finally, the glass tube is cooled to room temperature. In this manner, the external electrodes are affixed to the outer surface of the glass tube via soldering.

Abstract: The present invention provides a light emitting device which comprises a light emitting element, a mounting board on which the light emitting element is mounted, a metal-made reflector surrounding the side surfaces of the light emitting element on the mounting board, a conductor for electrically connecting the light emitting element with the mounting board, and a sealing resin fitted within the reflector to cover and seal the light emitting element and the conductor. The mounting board includes a metal-made base board, and an insulating board laminated on the base board and formed with a window hole extending therethrough which is larger than the outer periphery of the light emitting element. A mount for carrying the light emitting element thereon is disposed on the base board within the window hole with a clearance defined from side surfaces of the window hole.

Abstract: An instrument for ultraviolet irradiation includes a plurality of light-shielding filters each having different transmittances for ultraviolet radiation emitted from a light source for irradiating the skin of a patient with ultraviolet radiation, and a support member for supporting the light-shielding filters.

Abstract: An external electrode fluorescent lamp includes a glass tube made of soft glass, and external electrodes affixed to outer surfaces of both ends of the glass tube. The fluorescent lamp further includes a joining material applied between at least the glass tube and the external electrodes for affixing the external electrodes, which are made up of a material having a thermal expansion coefficient that is larger than that of the glass tube. According to the manufacturing method of the fluorescent lamp, first, the external electrodes are attached to the outer surface of each end of the glass tube, the external electrodes are then immersed in fused solder, and finally, the glass tube is cooled to room temperature. In this manner, the external electrodes are affixed to the outer surface of the glass tube via soldering.

Abstract: This invention provides an organic EL light-emitting device, which can prevent the occurrence of brightness unevenness due to resistance of a transparent electrode, in a large surface light-emitting panel of an organic EL element. The organic EL light-emitting device includes an element formation substrate 1, on which an organic EL element 2 including an organic light-emitting layer is stacked, and a sealing substrate 3 for sealing the organic EL element so as to accommodate the organic EL element between the element formation substrate and the sealing substrate. A sealing portion 4 formed of an adhesive is formed in the peripheral edge portion between the element formation substrate 1 and the sealing substrate 3, and a grease layer 5 or a gel layer 5 is accommodated in between the element formation substrate, on which the organic EL element surrounded by the sealing portion is formed, and the plate-shaped sealing substrate so as to adhere to the element formation substrate and the sealing substrate.

Abstract: There is provided a cold cathode fluorescent lamp that has excellent sputtering resistance and long life, even if high tube current is applied, and can be easily manufactured at low cost. In a cold cathode fluorescent lamp comprising a transparent tube having a fluorescent layer provided on an inner wall surface, containing a rare gas and mercury inside, and having both ends enclosed by sealing members, electrodes provided near both ends inside the transparent tube, and lead wires connected to the electrodes and provided through the sealing members, the electrode contains nickel as a main component and contains cerium metal or cerium oxide.

Abstract: [Problems to be Solved] In technology for identifying the position of an indoor terminal with high accuracy, the cost for installing a transmitter is high for the introduction of the position identifying technique which uses a transmitter to send a weak electric wave such as in Bluetooth, RFID, and the like, or an emitter to emit an infrared ray. [Means to Solve the Problems] Power is acquired from the existing lighting equipment to operate the transmitter which sends a weak electric wave such as in Bluetooth, RFID, and the like, or an emitter which emits an infrared ray.

Abstract: In a low-voltage power supply circuit for illumination that rectifies an ac power supply by means of a rectifier circuit, that controls this rectified output by means of a power-factor control circuit, and that supplies a low-voltage power supply for illumination, the power-factor control circuit is composed of a step-down circuit and is further provided with a current-limiting capability.

Abstract: The present invention includes an electrode having a filament with the end of each lead wire connected to each end of the filament, a cylindrical glass tube in which the electrode is provided, and a thermal fuse which is electrically connected to the lead wires in series, and is provided near the electrode on an outer peripheral surface of the glass tube, wherein, when a position on the outer peripheral surface of the glass tube which extends in a radial direction of the glass tube from a connecting portion of the filament and the lead wire, serve as a reference position, in case where the diameter of the glass tube is 8 mm or more, the thermal fuse is arranged at a distance of 1.5 mm or less from the reference position in the longitudinal direction of the glass tube.

Abstract: A remote control transmitter is capable of controlling a plurality of light fittings without the need for a slidable switch. The remote control transmitter includes a memory for storing data representing a plurality of control signals for respective channels corresponding respectively to the light fittings, a measurer for calculating a period of time during which the operation button is pressed based on a detected event starting when the operation button is pressed and ending when the operation button is released, and outputting a signal representing the calculated period of time, a transmitter for outputting a control signal based on the data stored in the memory, and a controller for setting one of the channels based on the signal output from the measurer, and controlling the transmitter to output a control signal based on the data stored in the memory in association with the set channel.

Abstract: A fighting device of the present invention includes light emitting unit 20 having a light emitting element installed on a board, and body 11 having light emitting unit 20 mounted thereon. Body 11 has graphite having anisotropic heat conductivity, and the graphite has inner wall 11c in thermal contact with light emitting unit 20. The anisotropy of the graphite has direction Z having a first heat conductivity and direction X1 having a second heat conductivity that is higher than the first heat conductivity. Inner wall 11c of the graphite to which heat generated from light emitting unit 20 is transferred is formed to intersect with direction X1.

Abstract: A novel yellow-emitting phosphor is represented by the general formula: Ca1-xAlSi4N7:Eux, and includes calcium (Ca), aluminum (Al), silicon (Si), europium (Eu), and nitrogen (N). In the general formula, x is preferably within a range of 0.001<x?0.15. The yellow-emitting phosphor emits yellow light, which is a complementary color to blue, when excited by blue light and hence can be used to produce warm white light by being combined with a blue light emitting device.