WO2007074803A1 - 照明装置及び金属蒸気放電ランプ - Google Patents
照明装置及び金属蒸気放電ランプ Download PDFInfo
- Publication number
- WO2007074803A1 WO2007074803A1 PCT/JP2006/325848 JP2006325848W WO2007074803A1 WO 2007074803 A1 WO2007074803 A1 WO 2007074803A1 JP 2006325848 W JP2006325848 W JP 2006325848W WO 2007074803 A1 WO2007074803 A1 WO 2007074803A1
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- WIPO (PCT)
- Prior art keywords
- vapor discharge
- metal vapor
- discharge lamp
- outer tube
- tube
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/025—Associated optical elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/34—Double-wall vessels or containers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/35—Vessels; Containers provided with coatings on the walls thereof; Selection of materials for the coatings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
- H01J61/827—Metal halide arc lamps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/14—Adjustable mountings
- F21V21/30—Pivoted housings or frames
Definitions
- the present invention relates to a lighting device and a metal vapor discharge lamp.
- metal vapor discharge lamps having high brightness, high efficiency, and long life such as metal lamps and ride lamps, have been widely used in various places due to the above characteristics.
- compact metal lamps with good color rendering and low power consumption have been developed. For example, they are used as light sources for lighting devices (so-called spotlights) that irradiate products and other products in a spot. ing.
- a conventional lighting device includes a reflecting plate having a concave reflecting surface and reflecting light emitted from a metal halide lamp force in a desired direction in addition to the above-mentioned metallometer and ride lamp.
- a so-called closed type in which the opening (light extraction port) of the reflection plate is normally closed by a front glass plate, for example, is used. This is to prevent the broken pieces from being scattered outside the reflector when the metal lamp or ride lamp, for which the explosion-proof measures are not applied to the lamp itself, is damaged for some reason.
- a metal-no-ride lamp has high brightness.
- the direct light emitted from a metal-no-ride lamp car touches the human eye it causes glare.
- An uneven surface for scattering is applied, or a glare cap is provided to block the light emitted from the metal nitride lamp (for example, Patent Document 1).
- Patent Document 1 Japanese Patent Laid-Open No. 11-96973
- the present invention has been made in view of the above-described problems, and provides an illumination device capable of suppressing the occurrence of glare while using an open-type reflector, and an open-type reflector. It is an object of the present invention to provide a metal vapor discharge lamp that can suppress the generation of glare even when it is mounted.
- an illuminating device includes an arc tube having a pair of electrodes therein housed in an airtight container having a pinch seal portion at one end, and the airtight container is the pinch seal.
- An open-type reflecting plate having a concave reflecting surface that gradually increases in diameter as it moves to the outer tube tip side, and the light emitted from the arc tube in the direction excluding the reflecting surface passes through the outer tube and passes through the outer tube.
- a light reduction means for reducing the amount of light emitted in the direction from the amount of light incident on the hermetic container is provided in the outer tube! /
- the “light reducing means” is a concept including, for example, an uneven diffusion portion, a surrounding member having a light shielding function, and the like.
- An arc tube having a pair of electrodes inside is housed in an airtight container having a pinch seal portion at one end, and the airtight container is housed in an outer tube having a base at the end on the pinch seal portion side.
- the metal vapor discharge lamp and the base side of the metal vapor discharge lamp are held and the base side force outside the metal vapor discharge lamp along the longitudinal direction of the metal vapor discharge lamp
- An open-type reflecting plate having a concave reflecting surface that gradually increases in diameter as it moves to the tube tip side, and a diffusing section that diffuses light emitted from the arc tube in a direction excluding the reflecting surface,
- the hermetic container is made of quartz glass
- the diffusing portion is made of irregularities formed on the inner surface and the Z or outer surface of the hermetic container
- the pair of electrodes is the metal Opposite on a virtual line substantially parallel to the central axis in the longitudinal direction of the vapor discharge lamp
- the diffusing portion is a virtual cone connecting the open side periphery of the reflecting surface and the tip of the electrode closer to the pinch seal portion. It is characterized by being formed inside the surface.
- the pair of electrodes oppose each other on an imaginary line that is substantially orthogonal to the longitudinal center axis of the metal vapor discharge lamp
- the diffusing portion includes an open-side peripheral edge of the reflecting surface and the pair of electrodes. It is characterized in that it is formed inside a virtual conical surface connecting a position corresponding to the approximate center between the electrode tips.
- an arc tube having a pair of electrodes inside is housed in an airtight container having a pinch seal part at one end, and the airtight container has a base at the end on the pinch seal part side.
- a metal vapor discharge lamp housed in the outer tube, and holding the base side of the metal vapor discharge lamp and gradually moving the base side force along the longitudinal direction of the metal vapor discharge lamp toward the distal end side of the outer tube An open-type reflecting plate having a concave reflecting surface that expands in diameter, and the metal vapor discharge lamp passes through a position substantially corresponding to the center between the tip of the pair of electrodes in the hermetic container and discharges the metal vapor.
- a surrounding member that surrounds at least a part of a region opposite to the pinch seal portion with respect to a virtual plane substantially orthogonal to a central axis in a longitudinal direction of the lamp is provided in the outer tube. That.
- the light emitted toward the direction excluding the arc tube force reflecting surface is enclosed.
- the amount of light emitted toward the direction excluding the metal vapor discharge lamp force reflecting surface can be reduced.
- the surrounding member is formed with a plurality of through holes and small pieces that cover the through holes so as not to be closed, or the surrounding member is separated from the light emitting tube when the lamp is turned on.
- a plurality of through holes for releasing the generated heat to the outside of the hermetic container, and light emitted in a direction excluding the reflecting surface from the arc tube, and the light passing through the through holes is the outside It has the light-shielding part which interrupts
- an arc tube having a pair of electrodes inside is housed in an airtight container having a pinch seal part at one end, and the airtight container is located on the pinch seal part side.
- a concave reflection that is housed in an outer tube having a base at its end, and that gradually increases in diameter as it moves from the base side to the outer tube tip side along the longitudinal direction of the outer tube while holding the base side.
- a metal vapor discharge lamp that is used by being mounted on an open-type reflector having a surface, out of light emitted from the arc tube toward the direction excluding the reflection surface, the light passes through the outer tube in the direction.
- a light reduction means for reducing the amount of emitted light from the amount of light incident on the hermetic container is provided in the outer tube.
- the lighting device can reduce the amount of light emitted from a metal vapor discharge lamp toward an area where there is no reflecting surface of the reflecting plate (that is, in a direction excluding the reflecting surface).
- a metal vapor discharge lamp that is, in a direction excluding the reflecting surface.
- the metal vapor discharge lamp according to the present invention reduces the amount of light directly radiated in the direction excluding the reflection surface of the reflection plate, assuming that the metal vapor discharge lamp is mounted on a reflection plate. Even when mounted on an open reflector with a concave reflecting surface, direct light from a metal vapor discharge lamp is less likely to touch the human eye, reducing glare.
- FIG. 1 is an overall view of an illuminating device according to a first embodiment, with a part cut away so that the inside of a reflector is divided.
- FIG. 2 is a front view of a metal nitride lamp shown as an example of a metal vapor discharge lamp, with a part cut away so that the inner part can be divided.
- FIG. 3 is a front sectional view of the arc tube.
- FIG. 4 is a diagram showing an optical path when the lamp is lit.
- FIG. 5 is an enlarged view of a front cross section of a metal halide lamp according to a second embodiment.
- FIG. 6 is an enlarged perspective view of a surrounding member.
- FIG. 7 is a diagram showing an optical path when the lamp is lit.
- FIG. 8 is a front view of a metal halide lamp according to a modified example, with a part cut away so that the inside can be divided.
- FIG. 9 is an overall view of a lighting device according to a modification, with a part cut away so that the inside of the reflector is divided.
- the light reducing means according to the present invention is constituted by a diffusing section.
- FIG. 1 is an overall view of the illumination device according to the first embodiment, and is partially cut away so that the inside of the reflector is divided.
- the illuminating device 10 includes a luminaire 12 and a methano and ride lamp 14 attached to the luminaire 12.
- the lighting fixture 12 is for a spotlight.
- the luminaire 12 includes a reflector 16 that reflects light emitted from a metal halide lamp 14 disposed therein, a socket (not shown) that is incorporated in the reflector 16 and to which the metal halide lamp 14 is attached, and a reflector. And an attachment 18 for attaching the plate 16 to the wall or ceiling.
- the reflecting plate 16 includes a concave reflecting surface 20 as shown in the figure.
- the reflecting surface 20 is configured by using an aluminum mirror, for example.
- the reflecting plate 16 holds the base side of the metal halide lamp 14, and the reflecting surface 20 has a concave shape that gradually increases in diameter as it moves from the base side to the lamp front side along the longitudinal direction of the metal halide lamp 14 held by the reflecting plate 16. It is curved.
- the reflection plate 16 has an opening (a light extraction port, which corresponds to the “excluding the reflection surface” portion of the present invention) 22 is not covered by a glass plate or the like, so-called (front) open type It is.
- the socket is electrically connected to the base of the metal nanoride lamp 14 and supplies power to the metal nanoride lamp 14.
- a ballast (not shown) for turning on the metal halide lamp 14 is embedded in the ceiling, for example, and supplies power to the metal halide lamp 14 via a supply line 24 described later.
- the attachment 18 has, for example, a “U” shape, and a pair of arms 26 (, 26) arranged in parallel and one end of the pair of arms 26 (, 26) are connected (
- the reflector 16 is pivotally supported by the arm 26 (, 26) in a state where the reflector 16 is sandwiched between the pair of arms 26 (26), and the connecting portion is For example, it is attached to a wall or a ceiling.
- the direction of the light emitted from the illumination device 10 can be adjusted by rotating the attachment 18 that is rotatable with respect to the reflecting plate 16.
- FIG. 2 is a front view of a metal lamp and a ride lamp shown as an example of a metal vapor discharge lamp, with a part cut away so that the inside is divided.
- the metal halide lamp 14 described here has, for example, a rated power of 70 [W].
- the metal nitride lamp 14 includes a light emitting tube 30 having a pair of electrodes therein and forming a discharge space, an inner tube 32 that is an airtight container for housing the light emitting tube 30, and the inner tube 32. It has a triple tube structure including an outer tube 34 that is a covered protective container, and has a base 36 for receiving the socket power of the lighting fixture 12 as well. Even if the arc tube 30 is damaged for some reason and the inner tube 32 is damaged due to the broken pieces, the metal rod lamp 14 has the outer tube 34. The outer tube 34 will not be damaged.
- FIG. 3 is a front sectional view of the arc tube.
- the arc tube 30 is composed of a main tube portion 40 having a discharge space 38 hermetically sealed therein, and thin tube portions 42 and 44 formed to extend to both sides of the main tube portion 40 in the tube axis direction. It has an envelope 4-6.
- the main pipe section 40 and the narrow pipe sections 42 and 44 are made of a translucent ceramic, for example.
- As the translucent ceramic for example, an alumina ceramic can be used. In addition, you may comprise with another ceramic or quartz glass.
- the envelope 46 is formed by forming the main pipe section 40 and the narrow pipe sections 42 and 44 separately, and then integrating them together by shrink fitting.
- the present invention is not limited to this.
- a main pipe part and two thin pipe parts formed by integral molding may be used.
- the main tube portion 40 is substantially inside the discharge space 38 on the central axis in the longitudinal direction of the metal nitride lamp 14 (hereinafter also simply referred to as “lamp axis”) or on an axis parallel to the lamp axis.
- lamp axis A pair of electrodes 50 and 52 facing each other is provided.
- the discharge space 38 is filled with a predetermined amount of a metal halide, which is a luminescent material, a rare gas, which is a starting auxiliary gas, and mercury, which is a buffer gas.
- the metal halide include sodium iodide and disodium iodide. For example, a procedure is used.
- the electrodes 50, 52 are composed of electrode rods 54, 56 and electrode coils 58, 60 provided at the ends of the electrode rods 54, 56 on the tip side (discharge space 38 side). And.
- the molybdenum coils 62, 64 are mounted on the electrode rods 54, 56 to prevent the luminescent material from entering the gap. Is inserted.
- the electrodes 50 and 52 are ideally (designed) as described above so as to be substantially opposed to each other on the lamp axis, that is, the central axes of the electrode rods 54 and 56 are substantially on the lamp axis. Be placed. However, in practice, the central axis may not be on the ramp axis because of the accuracy of the process.
- power feeders 66 and 68 having the respective electrodes 50 and 52 joined at the tip portions are inserted.
- the power feeding bodies 66 and 68 are sealed with sealing materials 67 and 69 made of frit poured into the end portions on the opposite side of the main pipe portion 40 in the narrow pipe portions 42 and 44, respectively.
- the portions of the sealing materials 67 and 69 appearing in FIGS. 2 and 3 are portions that protrude from the end portions of the thin tube portions 42 and 44.
- the end of the power supply 66 opposite to the side where the electrode 50 is located is electrically connected to a power supply line 72 as shown in FIG.
- the opposite end is electrically connected to the power supply line 74.
- the power supply lines 72 and 74 are connected to the shell portion 82 and the eyelet portion 84 of the base 36 through metal foils 78 and 80, respectively.
- a portion corresponding to the base 36 for example, a portion facing the other power supply line 72 or the power supply 66 connected to the power supply line 72 is, for example, quartz glass. It is covered with a sleeve 76 which is also powerful.
- the arc tube 30 and the like described above are accommodated in an inner tube 32 having a cylindrical shape, for example, a cylindrical shape, as shown in FIG.
- the inner tube 32 is made of, for example, quartz glass, and the end portion (corresponding to the “one end portion” of the present invention) on the side where the metal foils 78 and 80 exist is crushed by a so-called pinch seal method.
- the portions corresponding to the foils 78 and 80 are hermetically sealed.
- the inner tube 32 is a one-side sealed airtight container.
- the crush-sealed portion of the inner tube 32 is referred to as a pinch seal portion 86.
- the inner tube 32 is between the end opposite to the pinch seal portion 86 (corresponding to the lower end in FIG. 2) and a position corresponding to the approximate center in the longitudinal direction of the arc tube 30 in the discharge space 38.
- the reflector 16 A diffusing portion 88 that diffuses directional light to the opening 22 of the reflecting plate 16 without being reflected by the reflecting surface 20 is formed.
- the diffusing section 88 corresponds to the “light reducing means” of the present invention.
- the diffusing section 88 is configured, for example, by processing the outer surface of the inner tube 32 corresponding to the region R to be uneven.
- a preferable region R of the diffusion portion 88 is an electrode 50 closer to the base 36 of the metal halide lamp 14 (corresponding to the tip of the electrode rod 54 in the case of the electrode structure shown in FIG. 3).
- An imaginary line connecting the periphery of the opening 22 of the reflecting plate 16 is also a portion located on the opening 22 side of the reflecting plate 16.
- the above unevenness is formed such that the total light transmittance of the uneven processed portion is about 92 to 98 when the total light transmittance of the portion without the unevenness in the inner tube 32 is 100.
- the convex portion 90 at the tip of the other end of the inner pipe 32 is a tip-off portion that is the remaining portion of the exhaust pipe used when the inside of the inner pipe 32 is evacuated.
- the reason why the inner tube 32 is evacuated is to prevent oxidation of the power feeders 66 and 68 and the power supply lines 72 and 74 that are exposed to a high temperature when the lamp is lit. From the viewpoint of preventing acidification, the inside of the inner tube 32 (and thus the outer portion of the arc tube 30) can be filled with an inert gas rather than being evacuated.
- the inner pipe 32 is covered with an outer pipe 34 having a bottomed cylindrical shape (that is, a cylindrical shape having one end opened and the other end closed) as shown in FIGS. Yes.
- the outer tube 34 is made of, for example, hard glass and functions as a protective tube. That is, even when the arc tube 30 is damaged and the inner tube 32 is damaged, it plays a role of preventing further diffusion of fragments and the like.
- the inside of the outer tube 34 may be in a reduced pressure state or may be filled with an inert gas.
- the inside and outside of the outer pipe 34 may be in communication, that is, in the atmospheric state.
- the outer tube 34 has the same cylindrical shape as the inner tube 32, for example, a cylindrical shape, in order to ensure the compactness of the lamp. To ensure the clearance between the inner pipe 32 on average lmn! ⁇ 2mm.
- the outer pipe 34 has a base 36 attached to the end on the opening side.
- FIG. 4 is a diagram showing an optical path when the lamp is lit.
- the virtual line XI is a virtual line that connects the peripheral edge of the reflective surface 120 on the opening 22 side and the substantially central point O between the pair of electrodes 50 and 52
- the virtual line X2 is a reflective surface.
- 20 is an imaginary line connecting the peripheral edge on the side of the mounting hole (reference numeral “17” in the figure) for incorporating the metal halide lamp 14 in FIG. 20 and the substantially central point O between the pair of electrodes 50, 52.
- the light emitted from the arc tube 30 is a region where the reflecting surface 16 of the reflecting plate 16 is not present, that is, a region not located between the virtual line XI and the virtual line X2 in FIG. Since the directional light is diffused by the diffusing portion 88 of the inner tube 32, the amount of light directly irradiated from the lighting fixture 12 without being reflected by the reflector 16 is reduced. . This reduces glare even when a person looks directly at the light source (metal halide lamp 14).
- the light emitted from the arc tube 30 to the region where the reflecting surface 20 of the reflecting plate 16 is not present is the opening of the reflecting plate 16 like the light shown by the optical path B in FIG.
- the light is irradiated directly from 22 to the front, if there is the diffusing portion 88 as in the present embodiment, the light may be diffused by the diffusing portion 88 and directly irradiated from the reflecting plate 16 to the front. (Since the light is diffused in the diffuser, some light is then reflected by the reflector and radiated forward or directly from the reflector.)
- the diffusing unit 88 reflects from the lighting fixture 12 out of the light emitted from the arc tube 30.
- a region corresponding to the optical path of light directly irradiated to the outside of the plate 16 a region located on the opening 22 side of the reflecting plate 16 with respect to the phantom line in FIG. 1 and corresponds to a region R in FIG. .
- the human eye is less likely to come in direct contact with the light from the metal nanoride lamp 14 and the occurrence of glare can be suppressed.
- the diffusing unit 88 that diffuses the light from the arc tube 30 is not provided with a force in a region corresponding to the optical path of light directly irradiated from the luminaire 12 to the outside.
- Light that is not directly irradiated to the outside is directly reflected by the reflector 16 and indirectly irradiated from the lighting fixture 12 to the outside.
- the diffusing unit 88 Of the light diffused by the diffusing unit 88, the light diffused to the reflecting plate 16 side is reflected by the reflecting plate 16 to the front of the luminaire 12, so that, for example, the diffusing unit 88 is formed.
- the reduction in luminance can be suppressed compared to the case where the glare cap is put on the covered area.
- the diffusing portion 88 is formed on the outer surface of the inner tube 32, but it may be formed on the optical path of the light directly irradiated from the lighting fixture 12 to the outside.
- a diffusing portion may be formed on the inner surface of the inner tube 32, or further, formed on a portion of the outer tube 34 that is located on the optical path of light that is directly irradiated from the lighting fixture 12 to the outer portion.
- the outer tube 34 may be formed on the inner surface and Z or the outer surface. However, if the surface of the outer tube (outer surface) is roughened, the outer tube becomes fragile.
- the region where the diffusing portion 88 is formed is light directly irradiated to the outside from the lighting fixture 12 (corresponding to "light emitted in a direction other than the arc tube force reflecting surface" of the present invention).
- the whole range may be sufficient about the part located on this optical path, and a part (for example, only the front-end
- a part for example, only the front-end
- the diffusing portion 88 is constituted by irregularities formed on the outer surface of the inner tube 32.
- any diffuser can be used as long as it can diffuse the light emitted by the arc tube force. You may form in an equivalent area
- the inventors have led to the formation of the diffusion part in the inner tube through various examinations' tests, but initially, the diffusion part was formed on the outer surface of the hard glass outer tube of the metal nitride lamp by the sandblast method. I tried. However, it was found that if an uneven diffused part is formed on the outer surface of the outer tube, the outer tube becomes very susceptible to cracking if any impact is applied to the metal halide lamp (outer tube). Therefore, the diffusion portion is formed on the outer surface or the inner surface of the inner tube.
- the diffusing portion 88 is formed in the inner tube 32.
- the light reducing means according to the present invention is used to shield light from the arc tube. It consists of members.
- FIG. 5 is an enlarged view of the front cross section of the metal halide lamp according to the second embodiment. As shown in FIG. 5, the metal nanoride lamp 110 is similar to the first embodiment in the arc tube.
- the inner tube 32 the outer tube 34, the base 36, and the surrounding member 112 for fitting the tip portion (lower end portion in FIG. 5) of the inner tube 32.
- the inside of the outer tube 34 that is, the space between the inner tube 32 and the outer tube 34, is in communication with the atmosphere or in a state in which air is sealed at atmospheric pressure. .
- FIG. 6 is an enlarged perspective view of the surrounding member.
- the surrounding member 112 has a cylindrical shape with one end closed and a hexagonal cross section 114, and a truncated hexagonal pyramid shape provided at one end of the cylindrical portion 114. Cover 1 16 with.
- the cylindrical portion 114 has a heat radiating hole (corresponding to the “through hole” of the present invention) that releases heat generated when the arc tube 30 is turned on to the outside of the surrounding member. ) 118 and a light-shielding piece that blocks light that is emitted from the arc tube 30 directly toward the opening of the reflection plate and that has passed through the heat radiation hole 118 from reaching the outer tube 3 4 (the “small piece” and “ Corresponds to “light-shielding part”.) 120.
- a heat radiating hole corresponding to the “through hole” of the present invention
- the heat radiating hole 118 is formed in a square shape
- the light shielding piece 120 is formed by punching out three sides of the four sides of the heat radiating hole 118 and bending the one side.
- the one side corresponds to the longitudinal direction of the inner tube 32 and corresponds to the tip side (the side opposite to the base 36).
- the light shielding piece 120 covers the heat radiating hole 118 so as not to be blocked, and as described above, the light emitted from the arc tube 30 is not reflected by the reflecting surface of the reflecting mirror, but is reflected on the opening side of the reflecting plate.
- the light that passes directly through the heat dissipation hole 118 is prevented from reaching the human eye directly from the outer tube 34, and the light that has passed through the heat dissipation hole 118 is prevented from being reflected toward the reflector.
- the angle can be calculated from the reflecting surface, the distance between the electrodes, etc.) and is inclined so as to project outward from the surrounding member 112.
- the light shielding piece 120 is inclined so that the central axial force of the surrounding member 112 is also separated as it moves from the lid 116 side of the surrounding member 112 to the opening side.
- the surrounding member 112 is made of SUS having a thickness of 0.25 mm.
- the cylindrical portion 114 has a regular hexagonal shape with a side of 8.2 mm in a plan view, and has a shape in which six rectangular side surfaces 114a each having a short side as one side of the regular hexagon are connected in the circumferential direction. Yes.
- the rectangular shape has the width (short side) of 8.2 (mm) and the length (long side) of 25 (mm).
- the lid 116 has a truncated hexagonal pyramid shape as described above, and the truncated portion, which is the upper base, in a plan view has a hexagonal shape with a side of 2.5 (mm) and is the lower base.
- the part is 8.2 (mm) on one side, and the height between the upper and lower bases in side view is 7 (mm).
- six trapezoids 116a with an upper base of 2.5 mm, a lower base of 8.2 mm, and a height of 7 mm are connected to each other, and a regular hexagon 116b with a side of 2.5 (mm) is attached to the upper base. Covered!
- a rectangular heat radiation hole 118 having a width of 6.75 mm and a height of 3 mm 118 Force One side surface 114 a is provided with five in the longitudinal direction of the cylindrical portion 114.
- a light shielding piece 120 having the same dimensions as the rectangular heat radiation hole 118 is provided on the lid 116 side of the surrounding member 112 in each heat radiation hole 118, and the light shielding piece 120 is inclined outward at an angle of about 10 °. is doing.
- the lighting device using the metal halide lamp 110 having the above configuration as a light source is turned on, the light emitted from the arc tube 30 is reflected by the reflector 16 of the lighting fixture 12 as in the first embodiment. Without direct illumination, the light that is directly irradiated is reduced, and glare is less likely to occur when a person looks directly at the light source. The reason why glare is reduced will be described below using schematic diagrams.
- FIG. 7 is a diagram showing an optical path when the lamp is lit.
- the light directed to the region where the reflecting surface 20 of the reflector 16 is present that is, the region located between the virtual line 1X1 and the virtual line 1X2 in FIG. Passes through the inner tube 32 and the outer tube 34, and is then reflected by the reflector 16 and emitted from the luminaire 12 to the front (the side with the opening 2 2) (same as the optical path A in FIG. 4). ) 0
- the virtual line 1X1 and the virtual line 1X2 are the same as the virtual line XI and the virtual line X2 in the first embodiment (FIG. 4), and the reference numeral “20” in the figure is a pair. This is the approximate center point between the electrodes 50 and 52.
- the light emitted from the arc tube 30 is a region where the reflecting surface 16 of the reflecting plate 16 is not present, that is, a region not located between the virtual line 2X1 and the virtual line 2X2 in FIG. If the surrounding member 112 is not provided, the directional light in a region corresponding to the opening 22 of 6 is directly irradiated forward from the opening 22 of the reflecting plate 16 like the light shown by the optical path B in FIG. However, when there is the surrounding member 112 in the outer tube 34 as in the second embodiment, the light is blocked by the light shielding piece 120 of the surrounding member 112, and directly passes through the outer tube 34. There is less direct illumination from the luminaire 12 to the outside.
- the surrounding member 112 is provided so as to straddle the region of the inner tube 32 corresponding to the optical path of the light emitted from the light emitting tube 30 and directly irradiated from the lighting fixture 12 to the outside.
- the human eye will not be exposed to the direct light of the metal ride lamp power, and glare can be suppressed.
- the light that has passed through the heat radiation hole 118 is absorbed by the light shielding piece 120.
- the light that has not been absorbed is reflected by the light shielding piece 120 toward the base 36. Since most of the reflected light travels to the portion of the reflector that holds the metal nanoride lamp 110, there is little effect on the light distribution characteristics of the lighting device.
- the surrounding member 112 is made of a material such as SUS or A1 and the outer tube 34 is filled with air (or is in communication with the outside), the aging is performed by a lamp lighting test or the like.
- the surface of the surrounding member 112 is oxidized, and reflection of light that has passed through the heat radiation hole 118 can be suppressed.
- the shielding member 120 The reflectance becomes substantially constant, and the lighting device can maintain the same light distribution characteristics as the initial lighting for a long time.
- the surrounding member 112 is provided so as to surround the outer peripheral surface of the inner tube 32, but the surrounding region may be on the optical path of light directly irradiated from the lighting fixture 12 to the outside.
- an enclosing member may be provided inside the inner tube 32.
- the surrounding member is a conductive material, it is necessary not to contact the power supply line or to insulate either member.
- an enclosure member may be attached to the outside of the outer tube.
- the surrounding area may be the entire range or a part of the portion located on the optical path of the light directly irradiated from the lighting fixture 12 to the outside.
- the surrounding member so as to surround the entire range.
- the cylindrical portion of the surrounding member has a hexagonal cross-sectional shape, but naturally, other shapes such as an ellipse (including a circle) shape and a polygonal shape may be used.
- a polygon a polygonal shape of a pentagon or more is preferable in consideration of uneven reflection of light.
- the heat radiating holes may have shapes other than those described above, for example, an ellipse (including a circle), a semi-ellipse (including a semicircle), or a polygon.
- the cage member and the surrounding member may be formed of only a cylindrical portion.
- the surrounding member can be configured to force only the lid.
- a glare suppressing effect as much as that of the surrounding member described in the second embodiment cannot be obtained with the surrounding member having only the cylinder portion or the lid portion.
- the material of the surrounding member is a metal material. However, naturally, other materials, for example, ceramics may be used.
- the surrounding member is preferably made of a material having a light transmission property worse than that of the material constituting the inner tube.
- the surrounding member may be made of quartz glass and the diffusion portion described in the first embodiment may be formed on the wall surface.
- the surrounding member 112 has the light-shielding piece 120.
- the surrounding member 112 has a peripheral wall of the cylindrical portion, for example, even if a heat dissipation hole is formed in the peripheral wall, It can block the light directly radiated to the outside, and can suppress the occurrence of glare.
- the light that has passed through the heat radiation hole is irradiated from the lighting fixture 12 to the outside, which is worse than the glare suppressing effect of the surrounding member described in the second embodiment.
- the inventors have provided an enclosure member in the outer tube through various examinations and tests. At the beginning of the study, the inventors tried to provide an enclosure member on the outer surface of the outer tube of the metalno or ride lamp. However, when the surrounding member is provided on the outer surface of the outer tube, there are problems that the metal halide lamp itself is enlarged and the surrounding member is detached.
- the surrounding member is provided between the inner periphery of the outer tube and the outer surface of the inner tube.
- the cylindrical portion of the surrounding member can be slightly elastically deformed in the circumferential direction, and this panel function is used to cover the inner tube.
- the go member can be easily provided in the outer tube, and the force is also reduced. Since the material is in the outer tube, even if the surrounding member may lose the inner tube force, the metal halide lamp force will not be released.
- the initial surrounding member is a force that does not have the heat radiating hole 118 in the surrounding member 112 in the second embodiment.
- the surrounding member that does not have the heat radiating hole is used, ⁇ ⁇ ⁇ A leak occurred in the ride lamp, that is, in the inner tube or arc tube.
- the inventors have found that this is caused by the temperature when the metal nitride lamp is turned on. In other words, if an enclosure member that does not have a heat dissipation hole is provided, heat is not released when the metal nitride lamp is turned on, heat is trapped in the enclosure member, and the temperature of the arc tube and the inner tube rises. A leak occurred.
- the pair of electrodes 50 and 52 extend in a direction parallel to the axis of the metal halide lamp, and the tips of the pair of electrodes 50 and 52 are aligned with each other.
- Fig. 8 is a front view of a metal ride lamp in a modified example, with a part cut away so that the inside is divided.
- the metal halide lamp 200 includes an arc tube 207 having a pair of electrodes 201, 203 in an internal discharge space 205, an inner tube 209 that is an airtight container for housing the arc tube 207, It has a triple tube structure including an outer tube 211 that is a protective container placed on a tube 209, and has a base 36 for receiving power from a socket of a lighting fixture.
- the arc tube 207 has an envelope composed of a container part 213 having a discharge space 205 hermetically sealed therein and narrow tube parts 215 and 217 formed in the container part 213.
- the container 213 has a substantially elliptical shape and is accommodated in the inner tube 209 in a state of being substantially orthogonal to the lamp axis of the long-axis catalyst lamp.
- Narrow tube section 215, 217 Is extended from the container part 213 in a direction perpendicular to the major axis of the container part 213 (that is, a direction parallel to the lamp axis) and outward of the container part 213.
- Container portion 213 and narrow tube portions 215 and 217 are formed of, for example, translucent ceramic, and in discharge space 205, metal halide, rare gas, and water are provided in the same manner as in the first embodiment. A predetermined amount of silver is sealed in each!
- the pair of electrodes 201 and 203 includes an electrode rod 221, 223 and an electrode coil 225, 225 provided at the end of the electrode rod 221, 223 on the tip side (discharge space 205 side). 227, and a power supply body is connected to the ends of the electrode rods 221 and 223 in the same manner as in the first embodiment.
- the electrode rods 221, 223 of the electrodes 201, 203 extend in parallel with the lamp axis.
- An imaginary line segment connecting the tips of 203 is sealed to the narrow tube portions 215 and 217 so as to be substantially orthogonal to the lamp axis.
- the electrodes 201 and 203 are sealed to the thin tube portions 215 and 217 in the same manner as in the first embodiment.
- a molybdenum coil is provided for preventing the luminescent substance from entering the gap, as in the first embodiment.
- the electrodes 201 and 203 are electrically connected to the base 36 via a metal foil.
- the above-mentioned arc tube 207 and the like are housed in an inner tube 209 having a cylindrical shape, for example, a cylindrical shape having a circular cross section.
- the inner tube 209 is made of, for example, quartz glass, and the end portion (corresponding to the “one end portion” of the present invention) where the metal foil exists is the same as the first embodiment in the pinch seal portion 229. It has become.
- the inner tube 209 has a diffusion portion in a region R1 existing between an end opposite to the pinch seal portion 229 (corresponding to a lower end in FIG. 8) and a virtual line segment L1 connecting the tips of the electrodes 201 and 203. 2 31 is formed.
- FIG. 9 is an overall view of a lighting device according to a modified example, and a part is cut away so that the inside of the reflector is divided.
- the illuminating device 240 includes a luminaire 242 and a metal-ride lamp 200 attached to the luminaire 242. Note that the lighting device 240 is for a spotlight and is an open type. [0068]
- the lighting fixture 242 includes a reflector 244, a socket (not shown), and an attachment 246, as in the first embodiment.
- the region R1 in which the diffusion portion 231 is formed is a portion located on the opposite side of the base 36 from the imaginary line segment L1 connecting the tips of the pair of electrodes 201 and 203 as shown in FIG.
- both the electrodes 201 are placed on the virtual line segment L 1 in a state where the metal halide lamp 200 is incorporated in the lighting fixture 242.
- 203 includes a portion located on the opening 246 side of the reflecting plate 244 with respect to the imaginary line L2 connecting the position 30 and the periphery of the opening 246 of the reflecting plate 244 (opening side periphery of the reflecting surface).
- the diffusing portion 231 is formed at least at the inner portion of the virtual conical surface connecting the position 3 O at the substantially center between the electrodes 201 and 203 and the open side periphery of the reflecting surface.
- the present invention can also be applied to the metal nitride lamp 200 having the electrode structure as described above.
- the metal halide lamp having the electrode structure described in the modification may be provided with the surrounding member described in the second embodiment.
- the surrounding area includes a position 30 on the imaginary line L1 in the state where the metal halide lamp 200 is incorporated in the luminaire 242 and approximately at the center of both the electrodes 201 and 203, and the opening 246 of the reflector 244. It is preferable to include at least a portion located on the opening 246 side of the reflector 244 with respect to the virtual line L2 connecting the periphery. That is, it is preferable that the surrounding area surrounds at least the inner portion of the virtual conical surface connecting the position 30 at the substantially center between the electrodes 201 and 203 and the open side periphery of the reflecting surface.
- the electrodes in the above embodiments and modifications have a structure in which an electrode coil is attached to one end of an electrode rod.
- these electrodes include a type in which the tip of the electrode rod protrudes toward the electrode facing the electrode coil, and a type in which the electrode rod is located in the electrode coil.
- the tip of the electrode in the present invention is substantially positioned on the central axis or on the extension of the central axis in the portion of the electrode rod where the electrode coil is attached, with the pair of electrodes facing each other.
- the position between the electrodes in the electrode rod or electrode coil is the shortest position, and is the position from which discharge (arc) starts during lamp design. Therefore, in the electrode in which the tip of the electrode rod protrudes from the electrode coil, the electrode coil is attached to the electrode rod, and the position closest to the opposite electrode on the central axis is It becomes the tip of.
- the position closest to the opposing electrode on the extension of the central axis of the electrode rod portion to which the electrode coil is attached is the electrode. It becomes the tip of. Even when the electrode is not configured as described above, the tip of the electrode can be similarly applied.
- the present invention can be used for a metal vapor discharge lamp and an illuminating device capable of taking high-efficiency glare countermeasures even when using an open-type reflector.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Securing Globes, Refractors, Reflectors Or The Like (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06843232A EP1970937A4 (en) | 2005-12-28 | 2006-12-26 | LIGHTING DEVICE AND METALLIC STEAM DISCHARGE LAMP |
US12/097,209 US8063566B2 (en) | 2005-12-28 | 2006-12-26 | Illumination apparatus and metal vapor discharge lamp |
CN2006800489219A CN101346797B (zh) | 2005-12-28 | 2006-12-26 | 照明装置以及金属蒸汽放电灯 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-379473 | 2005-12-28 | ||
JP2005379473A JP4547331B2 (ja) | 2005-12-28 | 2005-12-28 | 照明装置及び金属蒸気放電ランプ |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007074803A1 true WO2007074803A1 (ja) | 2007-07-05 |
Family
ID=38218023
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/325848 WO2007074803A1 (ja) | 2005-12-28 | 2006-12-26 | 照明装置及び金属蒸気放電ランプ |
Country Status (6)
Country | Link |
---|---|
US (1) | US8063566B2 (ja) |
EP (1) | EP1970937A4 (ja) |
JP (1) | JP4547331B2 (ja) |
KR (1) | KR101037034B1 (ja) |
CN (1) | CN101346797B (ja) |
WO (1) | WO2007074803A1 (ja) |
Cited By (1)
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EP2191490A1 (en) * | 2007-09-27 | 2010-06-02 | Osram Gesellschaft mit beschränkter Haftung | Metal halide reflector lamp with beam color homogenizer |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101059256B1 (ko) * | 2008-04-25 | 2011-08-24 | 파나소닉 주식회사 | 조명장치 |
JP2010123542A (ja) * | 2008-11-21 | 2010-06-03 | Toshiba Lighting & Technology Corp | 高圧放電ランプ用拡散膜の塗布用液剤及び高圧放電ランプ |
JP4872008B2 (ja) * | 2010-05-07 | 2012-02-08 | パナソニック株式会社 | 照明装置及び金属蒸気放電ランプ |
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EP2191490A1 (en) * | 2007-09-27 | 2010-06-02 | Osram Gesellschaft mit beschränkter Haftung | Metal halide reflector lamp with beam color homogenizer |
EP2191490A4 (en) * | 2007-09-27 | 2012-04-18 | Osram Gmbh | METAL HALIDE LIGHT REFLECTOR LAMP WITH BEAM COLOR HOMOGENIZER |
Also Published As
Publication number | Publication date |
---|---|
EP1970937A4 (en) | 2011-05-25 |
CN101346797B (zh) | 2012-02-08 |
CN101346797A (zh) | 2009-01-14 |
EP1970937A1 (en) | 2008-09-17 |
US20090045745A1 (en) | 2009-02-19 |
KR101037034B1 (ko) | 2011-05-25 |
JP2007179959A (ja) | 2007-07-12 |
JP4547331B2 (ja) | 2010-09-22 |
US8063566B2 (en) | 2011-11-22 |
KR20080081303A (ko) | 2008-09-09 |
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