Abstract: According to one embodiment, a lighting apparatus is provided in which positioning of a light-emitting module including a ceramic board is easy and light extraction efficiency is improved. The lighting apparatus includes an apparatus body; a light-emitting module which includes a light transmissive ceramic board and a light-emitting element provided on one surface side of the ceramic board and is disposed in the apparatus body; a thermal radiator including a light-emitting module connection part to which the light-emitting module is heat-conductively connected; a heat conductive sheet intervening between the light-emitting module connection part and the light-emitting module and having insulation properties; and a reflection member intervening between the heat conductive sheet and other surface side of the ceramic board and having light reflective properties and sliding properties.

Abstract: According to one embodiment, a thermal radiator of a lamp device includes a light-emitting module connection part to which a light-emitting module is thermally conductively connected. An attachment base is arranged around the light-emitting module connection part. The attachment base is made of an insulating material, and supports the light-emitting module connected to the light-emitting module connection part. The light-emitting module connection part protrudes from the attachment base.

Abstract: According to one embodiment, a housing of a lamp device a cylindrical shape, and includes an opening part at one end side, a closing part at the other end side, and an insertion part formed at a center of the closing part. A thermal radiator includes a support part which is inserted through the insertion part, a light-emitting module connection part which is provided at one end side of the support part and to which the light-emitting module is connected to enable heat conduction, and an external thermal radiation part provided at the other end side of the support part. An area of the light-emitting module connection part is smaller than a cross-sectional area of the support part, and the support part, the light-emitting module connection part and the external thermal radiation part are integrally formed.

Abstract: According to one embodiment, a lamp device includes a housing, an insulating sheet, and a light-emitting module. The housing includes a thermal radiation section on the rear side opposite to the front side, which is a light emission side. A projecting section projects to the front side of the thermal radiation section. The insulating sheet includes an insert-through hole through which the projecting section is inserted. The insulating sheet is arranged on the front side of the thermal radiation section. The light-emitting module includes a substrate having a shape larger than the external shape of the projecting section and a light-emitting section formed on the front side surface of the substrate. The rear side surface of the substrate is thermally connected to the projecting section.

Abstract: According to one embodiment, a housing includes a cover provided with an opening section opened on the front side, which is a light emission side, and a thermal radiation section on the rear side opposite to the front side. An opening section of the cover is located further on the rear side than a peripheral portion of the cover. A light-emitting module includes a substrate and a light-emitting section formed on the substrate. The substrate is thermally connected to the thermal radiation section. The light-emitting section is opposed to the opening section of the cover, The translucent member is arranged in the opening section of the cover and located further on the rear side than the peripheral portion of the cover.

Abstract: According to one embodiment, a projection projects in the rear side center portion of a housing. A light-emitting module is arranged in the housing. A pair of power-supply sections configured to supply electric power to the light-emitting module is arranged around a light-emitting section in the housing. An information circuit configured to output information to the outside is arranged in a position around the light-emitting section and different from the positions of the pair of power-supply sections in the housing. A plurality of pins are provided at intervals along the rear side peripheral portion of the housing around the projection. Connecting means connects the power-supply sections and the pins located near the power-supply sections and connects the information circuit and the pin located near the information circuit.

Abstract: According to one embodiment, a light-emitting module includes a substrate, a cover, a frame body, and a resin layer. A light-emitting section including a light-emitting element is provided on the substrate. The cover has translucency and is opposed to the light-emitting section. The frame body is interposed between the substrate and the cover around the light-emitting section. The resin layer has translucency and is interposed between the light-emitting section and the cover while being set in contact with the light-emitting section and the cover.

Abstract: Disclosed is a high-pressure discharge lamp includes a translucent ceramics sealed container provided with an enclosed part with a discharge space formed therein, a pair of electrodes disposed inside of both end parts of the translucent sealed container, an ionization medium having a structure containing a metal halide that primarily emits light, a starting gas and substantially no mercury, the metal halide that primarily emits light including 30% by mass or more of a halide of at least one lanthanoid type rare earth metal and the starting gas having a pressure P (atm) satisfying the equation, 1?P?20, the ionization medium being sealed in the translucent ceramics sealed container, wherein the ratio D/G satisfies the equation, 0.3?D/G?2.4 when the maximum inside diameter of the translucent ceramics sealed container is D and the inter-electrode distance is G.

Abstract: A high-pressure discharge lamp is characterized by including a translucent airtight container having a discharging space in an internal portion, electrodes for causing discharge in the discharging space of the translucent airtight container, and an ionization medium sealed in the translucent airtight container and containing a metal halide and rare gas, the metal halide including at least one type of halides of thulium and holmium whose sealing ratio with respect to the total amount of sealed metal halides is not lower than 30 mass % and the rare gas is xenon at not lower than 3 atm at 25° C., and the high-pressure discharge lamp is characterized in that mercury and a metal halide for formation of lamp voltage are not substantially contained in the translucent airtight container.

Abstract: A mercury-free high-pressure discharge lamp includes a light-transmissive airtight envelope enclosing therein a discharge space, and a pair of electrodes sealed inside the light-transmissive airtight envelope and facing the discharge space, and the primary halide includes at least thulium bromide having an innumerable emission spectrum primarily around the peak of a luminosity curve and alkali metal halide, and the accessory halide contains one or more metal halides mostly selected from a group of Magnesium (Mg), Iron (Fe), Cobalt (Co), Chromium (Cr), Zinc (Zn), Nickel (Ni), Manganese (Mn), Aluminum (Al), Antimony (Sb), Bismuth (Bi), Beryllium (Be), Rhenium (Re), Gallium (Ga), Titanium (Ti), Zirconium (Zr), and Hafnium (Hf) which primarily contribute to fix lamp voltage.

Abstract: A high-pressure discharge lamp includes a translucent ceramic discharge vessel having a surrounding part formed of translucent ceramic, and a pipe connected to the surrounding part, formed of translucent ceramic having an average crystal particle size of 50 ?m or less in a region close to an intended sealing portion, and having a smaller diameter than the surrounding part. A current introducing conductor is inserted into the pipe of the translucent ceramic discharge vessel, and is sealed at least by a sealing portion formed by fusion of the translucent ceramic in the pipe. An electrode is connected to and disposed in the current introducing conductor in the translucent ceramic discharge vessel. A discharge medium is sealed in the translucent ceramic discharge vessel.

Abstract: This invention provides a metal halide lamp and a lighting equipment that, despite the fact that mercury is not filled, can provide electrical characteristics comparable with a mercury-contained metal halide lamp and can provide luminescent characteristics favorably comparable with the mercury-contained metal halide lamp. A metal halide lamp MHL includes a hermetically sealed vessel 1, a pair of electrodes 2, and a discharge medium filled in the hermetically sealed vessel. The discharge medium contains a first halide, a second halide, and a rare gas. The first halide is composed mainly of a halide of a luminescent metal and contains a halide of thulium (Tm) filled at the highest filling ratio in all of metal halides filled in the hermetically sealed vessel, and the content of an alkali metal halide in the first halide is less than 10% by mass at the highest.

Abstract: A mercury-free high-pressure discharge lamp includes a light-transmissive airtight envelope enclosing therein a discharge space, and a pair of electrodes sealed inside the light-transmissive airtight envelope and facing the discharge space, and the primary halide includes at least thulium bromide having an innumerable emission spectrum primarily around the peak of a luminosity curve and alkali metal halide, and the accessory halide contains one or more metal halides mostly selected from a group of Magnesium (Mg), Iron (Fe), Cobalt (Co), Chromium (Cr), Zinc (Zn), Nickel (Ni), Manganese (Mn), Aluminum (Al), Antimony (Sb), Bismuth (Bi), Beryllium (Be), Rhenium (Re), Gallium (Ga), Titanium (Ti), Zirconium (Zr), and Hafnium (Hf) which primarily contribute to fix lamp voltage.

Abstract: The present invention provides a high-pressure discharge lamp in which a seal part between the translucent ceramics discharge vessel and the current introducing conductor has an improved sealing capability, as well as a high-pressure discharge lamp operating apparatus and an illuminating apparatus which use the high-pressure discharge lamp. A high-pressure discharge lamp MHL includes a translucent ceramics discharge vessel 1 having an opening 1b, a current introducing conductor 2 inserted into and sealed to the opening, electrodes 3 connected to the current introducing conductor 2 and sealed in the translucent ceramics discharge vessel, and a discharge medium. The sealing of the current introducing conductor is provided by the fusion of ceramics in the opening of the translucent ceramics discharge vessel or/and a material of the same quality as that of a material of a part of the current introducing conductor which is opposite the opening.

Abstract: A high-pressure discharge lamp comprising a translucent airtight container having a discharge space therein, a pair of electrodes sealed in the airtight container, the electrodes having an inter-electrode distance D of 2 mm or less and facing the discharge space, and an ionizing medium sealed in the airtight container and substantially being mercury-free while it contains thulium (Tm) halide, zinc (Zn) halide and rare gas, the zinc (Zn) halide being less than 20% to 90% by mass of all metal halides sealed in the airtight container, wherein a ratio V1/D of a lamp voltage V1 (V) to the inter-electrode distance D (mm) satisfies the following formula.

Abstract: A high-pressure discharge lamp which includes a translucent ceramic discharge vessel having a swollen portion defining a discharge space and a pair of cylindrical portions formed in and communicating with the swollen portion and extending from the swollen portion in the opposite directions with each other. The high-pressure discharge lamp also includes metal tubes each having a outer diameter D and fit with its one end on the cylindrical portion, a pair of fusible metal plugs each plugged in the outer end of the metal tube, the fusible metal plug sealing the discharge vessel by being fused to the inner surface of the metal tube for a specified height T from the outer end of the metal plug, a pair of electrode systems each supported its one end to the fusible metal plug and facing the interior of swollen portion with its other end, and ionizing filling filled in the discharge vessel The ratio T/D of the height T concerning the fusible metal plug and the diameter D satisfies the following equation 0.

Abstract: A high pressure discharge lamp includes a light-transmissive ceramic discharge vessel with an envelope having a maximum outer diameter D1 and open ends, a metal pipe having one end, i.e., a top end fused in the open end of the light-transmissive ceramic discharge vessel and the other end, i.e., a base end protruding from the light-transmissive ceramic discharge vessel, a pair of electrodes each having one end, i.e., a base end connectively supported on the base end of the metal pipe and the other end, i.e., a top end extending within the light-transmissive ceramic discharge vessel, and a discharge agent which is filled in the light-transmissive ceramic discharge vessel, wherein it is also characterized by that the high pressure discharge lamp has an overall length L1, and the overall length L1 and the maximum outer diameter of D1 satisfies a following equation. 1.5≦L1/D1≦4.

Abstract: A high pressure discharge lamp includes a light-transmissive ceramic discharge vessel with an envelope having a maximum outer diameter D1 and open ends, a metal pipe having one end, i.e., a top end fused in the open end of the light-transmissive ceramic discharge vessel and the other end, i.e., a base end protruding from the light-transmissive ceramic discharge vessel, a pair of electrodes each having one end, i.e., a base end connectively supported on the base end of the metal pipe and the other end, i.e., a top end extending within the light-transmissive ceramic discharge vessel, and a discharge agent which is filled in the light-transmissive ceramic discharge vessel, wherein it is also characterized by that the high pressure discharge lamp has an overall length L1, and the overall length L1 and the maximum outer diameter of D1 satisfies a following equation.