WO2005010921A1 - メタルハライドランプ - Google Patents
メタルハライドランプ Download PDFInfo
- Publication number
- WO2005010921A1 WO2005010921A1 PCT/JP2004/010789 JP2004010789W WO2005010921A1 WO 2005010921 A1 WO2005010921 A1 WO 2005010921A1 JP 2004010789 W JP2004010789 W JP 2004010789W WO 2005010921 A1 WO2005010921 A1 WO 2005010921A1
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- WO
- WIPO (PCT)
- Prior art keywords
- lamp
- halide
- metal
- arc tube
- efficiency
- 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
- H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
- H01J61/125—Selection of substances for gas fillings; Specified operating pressure or temperature having an halogenide as principal component
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/84—Lamps with discharge constricted by high pressure
- H01J61/88—Lamps with discharge constricted by high pressure with discharge additionally constricted by envelope
Definitions
- the present invention relates to a metal halide lamp used outdoors, on a high ceiling, and the like. Background art
- ceramic metal eight-ride lamps using ceramics as the arc tube material for metal halide lamps has been active.
- ceramic arc tubes are characterized by less resistance to luminescent materials and excellent heat resistance.
- a metal halide lamp using a ceramic arc tube there is a lamp as disclosed in JP-T-2000-511689.
- This lamp has a ceramic arc tube containing at least one halide selected from Na (Na), T1 (Thallium), Dy (Disposium), and Ho (Holmium), and Ca I 2 (Calcium iodide) )
- the efficiency of the metal octride lamp described in the above-mentioned Japanese Translation of PCT Publication No. 2000-51 1689 is the rated power of the lamp.
- LW is an acronym for “Lume n Per Wattt” and has a unit of “Im / W”.
- high ceiling lighting is emphasized not only because of its lamp efficiency but also because of its excellent color rendering properties. Since the light emission of the system is enhanced, the color rendering properties are reduced. In other words, it is extremely difficult to achieve both high efficiency and high color rendering.
- the present invention has been made in view of the above-mentioned problems, and an object of the present invention is to maintain a good color rendering property in which an average color rendering index Ra is 0 or more, preferably 85 or more, and An object of the present invention is to provide a metal eight-ride lamp exhibiting a high efficiency (more than 1 OOLPW) by more than 10% compared to the efficiency of a metal eight-ride lamp (typically 90 LPW). 10% efficiency improvement (increase in luminous flux) It is the lowest level where you can feel the addition.
- the average color rendering index Ra is 0 or more, preferably 85 or more
- An object of the present invention is to provide a metal eight-ride lamp exhibiting a high efficiency (more than 1 OOLPW) by more than 10% compared to the efficiency of a metal eight-ride lamp (typically 90 LPW). 10% efficiency improvement (increase in luminous flux) It is the lowest level where you can feel the addition.
- the average color rendering index Ra is 0 or more, preferably
- Ra 70 or more generally gives a good color rendering property for discriminating the color of an object when working in a factory or the like.
- a metal halide lamp according to the present invention is a metal halide lamp including a light emitting tube made of ceramic and a pair of opposing electrodes, wherein a halogen lamp of Pr (praseodymium) sealed inside the arc tube. And a halogenated compound of Na (sodium) and an octalogenated compound of Ca (calcium).
- the amount of the halide of Pr is Hp [mol]
- the Na is The encapsulation amount Hn [mol] of the halide and the encapsulation ⁇ Hc [mol] of the halide of the Ca are
- the amount of the halide of P ′′, the halide of Na, and the halide of Ca is not less than 1.0 mg / cm 3 .
- an outer tube for housing the arc tube is provided,
- the space between the arc tube and the outer tube is kept at a reduced pressure of 1 kPa or less.
- the average color rendering index Ra is 70 or more, and the lamp efficiency is 1 OOL PW or more.
- a lighting device includes any one of the above-described metal eight-ride lamps, and means for dimming the metal eight-ride lamp.
- the means includes an electronic ballast for supplying power to the metal octaride lamp electrode, wherein the electronic ballast regulates the power in a range from 25% of the rating to the rating.
- FIG. 1 is a side view of an arc discharge metal octogenated lamp of the present invention having a ceramic arc tube configuration therein.
- # 2 is an enlarged sectional view of the arc tube 20 of FIG.
- FIG. 3 is a graph showing the relationship between the lamp efficiency (LPW) and the ratio of the length between the light emitting tube electrodes to the inner diameter (L / D) of the lamp of the present invention.
- FIG. 4 shows the relationship between the lamp efficiency (L PW) and the average color rendering index (R a) of the lamp of the present invention, based on the mo I ratio between the octalogenide amount of Ca and the halide amount of Pr. ⁇ indicating the relationship.
- FIG. 5 is a diagram showing a change in color temperature when dimming from 30 W to 150 W for a typical lamp of the present invention.
- 6 (A) to 6 (G) are views showing a cross section of one embodiment of the arc tube of the lamp of the present invention.
- FIG. 7 is a block circuit diagram showing a configuration example of a system (illumination device) provided with a metal eight-ride lamp and an electronic ballast according to the present invention.
- BEST MODE FOR CARRYING OUT THE INVENTION The metal octaride lamp of the present invention comprises a halide of Pr (praseodymium), a halide of Na (sodium), and a halide of C a enclosed in an arc tube. (Calcium) halide,
- FIG. 1 is a diagram showing a configuration of a metal halide lamp 1 of the present embodiment.
- This figure shows a state in which a spherical boric acid outer tube 11 is fitted into an Edison type metal base 12.
- the metal octride lamp 10 of the present embodiment includes a transparent outer tube 11 and a ceramic arc tube 20 housed inside the outer tube 11.
- the base 12 has a borosilicate glass flare (the outer tube length).
- a shaft passing flare (16) is attached and extends into the outer tube (11) along the longitudinal axis (dotted line (104) in Fig. 1) of the outer tube (11).
- the lead-in electrode wires 14 and 15 (access wires) pass through the outer tube 1 through borosilicate glass flare (flare passing through the outer tube long axis) 16. It extends in parallel inside 1.
- the wires 14 and 15 are formed, for example, of nickel or mild steel.
- a portion of the wire 15 parallel to the outer tube major axis 104 passes through the inside of the aluminum oxide ceramic tube 18 so that photoelectrons are not generated from the surface of the wire 15 during operation of the lamp. I have. Further, a portion of the wire 15 parallel to the long axis 104 of the outer tube supports a getter 19 for capturing (adsorbing) gas impurities.
- the ceramic arc tube 2 # can have various configurations as described later.
- C The configuration of the arc tube 2 # shown in FIG. 1 is merely an example.
- the illustrated light emitting tube 20 has a shell structure having a polycrystalline alumina wall that is translucent to visible light.
- the arc tube 20 has a main tube 25 and a pair of small inner / outer diameter ceramic truncated cylindrical shell portions 21 (which may be referred to as "tubes 21").
- the tube 21 is shrink-fitted to each of the two open ends of the main tube 25.
- the arc tube 20 can be suitably formed of a material such as yttrium-aluminum moogarnet (so-called YAG), aluminum nitride, alumina, yttria, and zirconia.
- YAG yttrium-aluminum moogarnet
- aluminum nitride aluminum nitride
- alumina aluminum nitride
- yttria aluminum nitride
- zirconia zirconia
- FIG. 2 is an enlarged cross-sectional view of the arc tube 20 of FIG. 1).
- the main tube 25 of the arc tube 20 shown in FIG. 2 has a shell portion 1 ⁇ 1 having an inner diameter D, a pair of cylindrical shell portions 1 ⁇ 2 connected to the tube 21, and a shell portion 101 and each cylinder. A pair of circles connecting the shell part 102 Conical shell part "!
- a lead wire 26 formed of, for example, two obi extends outward from the tube 21.
- the two leads 26 are electrically connected to the wires 14 and 15 shown in FIG. 1, respectively, and are used as conductors for supplying lamp power.
- One of the two lead wires 26 is connected to the wire 14 by welding at a position where the wire 14 intersects the outer tube major axis 104 as shown in FIG.
- the other of the two lead wires 26 is connected to the wire 15 by welding at a position where the wire 15 intersects the outer tube major axis 104 as shown in FIG.
- the arc tube 20 is disposed between the welded portion of the wire 14 and the wire 15, and is supported such that the longitudinal axis of the arc tube 20 substantially coincides with the outer tube long axis 104. ing.
- the input power required for lamp operation is supplied to the lead wire 26 of the arc tube 20 via the wires 14 and 15.
- the lead wire 26 is fixed to the inner surface of the tube 21 by a glass frit 27 and is sealed. For this reason, it is preferable that the thermal expansion characteristic (linear expansion coefficient) of the lead wire 26 is close to the thermal expansion characteristic (linear expansion coefficient) of the tube 21 and the glass frit 2.
- a molybdenum lead-in wire 29 is disposed inside the tube 21.
- One end of the wire 29 is connected to one end of the lead wire 26 by welding, and the other end is connected to one end of the tungsten main electrode shaft 31 by welding.
- An electrode 32 made of a tungsten coil is provided at the other end (tip portion) of the main electrode shaft 31 and is integrated with the main electrode 31 by welding.
- the diameter of the lead wire 26 is, for example, 0.9 mm.
- the diameter of the main electrode shaft 31 is, for example, 0.5 mm. These sizes are for your application Can be changed to an appropriate size.
- the distance L between the electrodes is measured along a straight line (referred to as a “straight line between electrodes”) connecting the centers of the tips of the pair of electrodes 32.
- the inner diameter D of the main pipe 25 is measured along a “plane” substantially orthogonal to the straight line between the electrodes.
- substantially perpendicular means not only the case where the “line between electrodes” is exactly perpendicular to the above “plane”, but also the term “plane” and “line between electrodes”. Crosses at an angle slightly deviated from a right angle. Specifically, when the shape of the main pipe 25 and the position of the electrode 32 inside the main pipe 25 are changed from those shown in FIG.
- a plane defining the inner diameter (the inner wall surface of the main pipe 25)
- the relationship between the vertical plane and the straight line between the electrodes deviates from “vertical”. Even when the surface defining the inner diameter D and the straight line between the electrodes are not exactly orthogonal as described above, it is only necessary that the deterioration of the light emission characteristics does not cause a problem in a normal lamp design.
- LZD is a common parameter that affects the amount of light emitted from the arc tube 20, the distribution of excited states of active material atoms, the spread of material emission lines, and the like.
- an arc tube having a shape shown in FIG. 6D is used.
- This arc tube has a cross section of a right circular cylinder cut so that both ends of the tube wall structure are hemispherical.
- Example 1 Hereinafter, a first embodiment of a metal eight-ride lamp according to the present invention will be described.
- the basic configuration of the metal eight-ride lamp of the present embodiment is as described with reference to FIGS. 1 and 2, but in this embodiment, the rated power of the lamp is set to 150 W, The inside of the outer tube 11 is maintained at a reduced pressure of 1 kPa.
- the arc tube 20 of the present embodiment is made of polycrystalline alumina, and contains therein an amount of mercury suitable for controlling the lamp voltage in the range of 80 to 95 V when operating at the rated power. A total of 5.5 to 19 mg of ⁇ 4.0 mg and the enclosed octalogenide was enclosed according to the volume of the arc tube.
- the octogenes prepared were praseodymium iodide, sodium iodide, and calcium iodide in mol ratios of 1: 10: 0.5, 1: 10: 2, and 1:10:10, respectively.
- Xe (xenon) gas showing a pressure of 200 Pa at 300 K (Kelvin) is further sealed inside the arc tube 20.
- a metal-octide lamp having the above-described configuration is prepared by changing the ratio LZD of the distance L between the electrodes to the inner diameter D of the arc tube 20 from 0.6 to 20 and preparing a 7-lamp lamp.
- the light output characteristics of the lamp were evaluated with the lamp lit at a rated power of 150W.
- FIG. 3 shows the relationship between the lamp efficiency [LPW] and the ratio L / D for the conventional lamp and the typical lamp of the present invention.
- conventional lamp the difference between the conventional high-efficiency lamp (hereinafter referred to as “conventional lamp”) and the lamp of the present invention lies only in the type of the enclosure, and the other configurations are the same.
- Conventional lamp enclosures are Na, Tl, Dy, Ho, Tm and Ca iodides, which were used in accordance with the first example described in JP-T-2-1101689. That is, octa-logenide is adjusted to the volume inside the arc tube so that is 29 mol 96, TI is 6.5 mol%, Ho is 6.5 mol%, Tm is 6.5 mol%>, and Ca is 45 mol%. 5.5 to 19 mg was enclosed.
- the lamp efficiency of a conventional lamp is typically about 90 LPW regardless of LZD.
- the distance L between electrodes and the inner diameter D satisfy the relationship of L / D ⁇ 1.0, it is found that a high efficiency of about 1 mm or more can be obtained compared with the conventional lamp.
- Ra was found to be 7 ⁇ to 90, and it was found that very good color rendering properties were obtained.
- the lamp efficiency of the lamp of the present invention is 113 LPW, so that an efficiency higher than the lamp efficiency of 90 L PW of the conventional lamp by 25% or more can be obtained.
- LZD ⁇ 4 a high efficiency equal to or higher than 110 L PW of lamp efficiency of a high-pressure sodium lamp used as a lamp with high lamp efficiency was obtained.
- the value of 1 ! & Is about 20 to 30, while the Ra of the lamp of the present invention shows a very good value of 0 to 90, and high efficiency and high color rendering. Has been realized.
- the lamp efficiency of the lamp of the present invention is increased by 25% or more compared to the lamp efficiency of the conventional lamp, it is possible to reduce the number of lamps used in the conventional lighting design by 25% while maintaining the light emission performance. it can. Furthermore, within the range that satisfies the relationship of LZD ⁇ 4, even when the arc tube 2 ⁇ is turned on in a horizontal state, the arc of the discharge arc is suppressed, and the light is turned on. The effect of preventing flickering inside was confirmed.
- the distance L between electrodes and the inner diameter D satisfy the relationship of LZD ⁇ 9.
- the lamp efficiency of the lamp of the present invention is maximized, and a high value of 120 L PW or more can be achieved.
- the lamp efficiency of the lamp of the present invention can be improved by about 35% as compared with the 90 L PW of the conventional lamp.
- the graph in Fig. 3 shows that when the relationship of LZD> 9 is satisfied, the lamp efficiency tends to decrease. However, if the distance L between electrodes and the inner diameter D satisfy the relationship of 9 / L / D ⁇ 20, it can be seen that the lamp efficiency of the lamp of the present invention is higher than the lamp efficiency of 90 L PW of the conventional lamp.
- the distance L between the electrodes and the inner diameter D satisfy the relationship of L / D> 20, the distance L between the electrodes becomes very large, and it becomes difficult to start and maintain the discharge using a normal lighting circuit, or However, the inner diameter D becomes smaller, and it becomes difficult to maintain the discharge due to the annihilation of electrons on the tube wall. Therefore, it is preferable that the distance L between electrodes and the inner diameter D satisfy the relationship of LZDD20.
- He / Hp is set to three values of ⁇ . 5, 2.0, and 10; however, 1. 100 L PW or more in the range of ⁇ L / D ⁇ 2 ⁇ To achieve this, it is necessary to set Hc / Hp ⁇ 2.0. However, if Hc / Hp ⁇ 15. ⁇ , the lamp efficiency can be improved compared to the conventional lamp.
- the amount of the octogenated Pr, the halide of Na, and the halide of Ca may be set to 1.Omg / cm 3 or more. preferably, 2. 0 ⁇ 25 mg / cm 3. It is more preferable to set in the range.
- a translucent ceramic is used for the arc tube material.
- Pr and quartz are opposite, and problems such as devitrification occur early in the life. I do.
- Ca the effect of the present invention cannot be obtained when the enclosure of the present embodiment is used with a quartz arc tube.
- the difference between the lamp of this embodiment and the lamp of Embodiment 1 is that in the arc tube 20, 0.5 mg of mercury is contained, and as a sealed halide, the ratio of prasedium gym iodide to sodium iodide is 1: 1. ⁇ , encapsulated to a total of 9 mg, and the mo] ratio He / Hp of the halide amount of Ca (He) and the halide amount of Pr (Hp) is in the range of 0.2 to 18. Calcium iodide was added.
- the inner diameter D of the main pipe 25 between the two electrodes 32 is about 4 mm.
- the distance L between the two electrodes 32 in the discharge region 2 ⁇ 1 of the arc tube 20 is about 32 mm, and the same value of the arc length can be obtained.
- the other points are the same as in Experiment 1.
- the distance L between the electrodes of the lamp of the present invention is extremely long.
- the distance L between the electrodes of the lamp of the present invention is 20 mm It is preferable to set within the range of ⁇ 5 mm.
- the inner diameter D increases with the same tube wall load, and the arc may be curved and the arc tube may break.
- the electrode leap distance L exceeds 5 mm, it becomes difficult to start the lamp.
- the lamp of the present invention was operated at a rated power of 15 ⁇ W to evaluate the light output characteristics of the lamp.
- FIG. 4 shows the lamp efficiency [LPW] and the average color rendering index Ra of the lamp of the present invention with respect to the mo I ratio H cZH p of the halide content of He (He) and the halide content of Pr (Hp). Shows the relationship. As shown in FIG. 4, the efficiency decreases as the ratio of H c / H ⁇ increases, and when HcZHp ⁇ 15, the efficiency is 117 L PW. As the ratio of H cZH p increases further beyond 15, the efficiency drops sharply.
- the 25% increase in efficiency is the amount by which humans can clearly notice the increase in brightness.
- Efficiency improvement of 25% compared to conventional lamps means breakthrough efficiency.
- Ra is 9 ⁇ , in the range of HcZHp 11.9, It can achieve an efficiency of more than 25% (efficiency of more than 115 L PW) than that of conventional lamps (90 L PW) and a very good color rendering property with Ra of 9 mm or more. Furthermore, Li confirmed that it exhibited excellent white light close to the blackbody locus of 0.005 or less.
- a color rendering property equivalent to that of the conventional lamp can be obtained in the range of 11.9 ⁇ Hc / Hp ⁇ 15.0. ing.
- the lamp efficiency is determined by the ratio LZD of the distance L between electrodes to the inner diameter D.
- the ZD is set to 28, but if H cZH p ⁇ 15, as shown in the first embodiment, the efficiency of the conventional lamp is 90 L PW within the range of LZD ⁇ 1. .. Higher efficiencies are achieved.
- the configuration of the lamp in the present embodiment is the same as the configuration of the lamp in Embodiment 2 except for the ratio of the enclosed octalogenide.
- the moI ratio He Hp between the halide amount of Ca (Hc) and the halide amount of Pr (Hp) was changed in the range from ⁇ .4 to 15.0.
- the moI ratio Hn / Hp between the octalogenide amount (Hn) of Na and the halogenide amount (Hp) of Pr was changed in the range of 3.0 to 25 ... .
- Figure 5 shows that among them, Pr: Na: Ca, 1: 3: 0.4, 1: 3: 2, 1: 10: 0.4, 1: 10: 1 Os 1:25:
- the relationship between the input power to the lamp (W) and the color temperature (K) is shown for the example where the ratio was changed to 2: 1, 25:15.
- the color temperature of the lamp is substantially determined by HnZHp, and the influence of HcZHp on the color temperature is small. Furthermore, in the range of Hn / Hp or HcZHp, excellent dimming characteristics can be obtained regardless of these ratios.
- the cause of the color temperature fluctuation of conventional lamps is that the enclosed T1 and other inclusions (especially the 3A group of Dy-Y-Ho) strongly depend on the temperature, and the vapor pressure This is because it shows characteristics. Therefore, when the input power is lower than the rated power, the light emission balance is lost, and T1 that emits at a low temperature during dimming and has a strong ⁇ light emission exhibits a green emission color, and the color temperature of the lamp increases.
- the lamp of the present invention since the main light emission is emitted from Pr and Na, the vapor pressure fluctuations relative to the temperature change are relatively almost equal.
- octa-logenide of Ca is mixed, it is possible to stabilize the luminous balance of the enclosure against fluctuations in lighting conditions. Characteristics are obtained. In this example, LZD was set to 8, but as long as LZD satisfied the relationship of 1.0 LZD20, similarly good dimming characteristics were obtained.
- FIG. 1 is a block circuit diagram showing a configuration example of a system (illumination device) including a metal eight-light lamp and an electronic ballast according to the present invention.
- the electronic ballast shown in FIG. 1 includes a booster 2 that receives an AC current from a commercial power supply 1 and converts the DC current into a DC current, and a lighting circuit unit 3 that converts the DC current into an AC current whose frequency and waveform are adjusted.
- An AC current output from the lighting circuit unit 3 is provided to the metal eight-ride lamp according to the present invention.
- This electronic ballast further includes a first control circuit 4, a second control circuit 5, and a setting unit 6.
- the first control circuit 4 controls the magnitude of the voltage and current output from the step-up chopper 2. Is detected by the first control circuit 4 and is controlled so as to indicate the value set by the setting unit 6.
- the output waveform and frequency of the lighting circuit section 3 are controlled by the second control circuit 5.
- the dimming of the metal halved lamp is performed by the first control circuit 4 controlling the operation of the booster chamber 2 so that the output having the value set by the setting unit 6 is obtained from the booster chamber 2.
- metal eight-ride lamp of the present invention as described in Examples 1 to 3, good lamp characteristics with little increase in lamp voltage during the life and little change in electric characteristics until the end of the life can be obtained.
- the metal octaride lamp of the present invention it was confirmed that there was little change in light characteristics (particularly change in color temperature) during the service life, and small variation in color characteristics (individual difference) at the time of manufacture. This is an effect unique to the present invention obtained by using a mixture of Pr, Na, and Ca halides, and is also exhibited as an effect of stabilizing the light emission balance during dimming. .
- the inside of the outer tube 11 is set to a reduced pressure of 1 kPa, but the inside of the outer tube 11 is set to, for example, 50 kPa. It may be set to a nitrogen atmosphere of Pa or less.
- the lamp efficiency is slightly lowered, it is possible to provide a metal halide lamp having high efficiency, good color rendering properties, and excellent dimming characteristics, similarly to the lamp of the embodiment.
- the efficiency is reduced by about 2-3 LPW only in the range where the efficiency exceeds 120 LPW.
- the arc tube 20 may have another geometric shape different from the configurations shown in FIGS.
- 6 (A) to 6 (G) show examples of various forms that can be adopted by the arc tube 20, and are cross-sectional views along the long axis of the arc tube.
- the inner surface of the tube wall and the outer surface of the tube wall are surfaces of a rotating body having the long axis of the arc tube as a rotation axis, but are not shown here because they are not necessarily required.
- the inner diameter D of the inner surface of the tube wall can be obtained by obtaining the inner area of the cross-sectional view between the electrodes (that is, over the distance L between the electrode tips) and dividing this area by L.
- Other types of inner surfaces may require more elaborate averaging procedures to determine their inner diameter.
- each arc tube shape of each arc tube and features when each arc tube is used. At this time, the conditions other than the arc tube shape are the same.
- Fig. 6 (A) shows an arc tube with an elliptical cross section at the center of the arc tube.
- C Fig. 6 (B) shows a cross section of a right cylinder cut so that both ends of the arc tube center are flat.
- 1 shows an arc tube having This arc tube shape is characterized by a small change in color temperature during lighting. Therefore, it is particularly effective when a change in the emission color is a concern.
- FIG. 6 (C) shows an arc tube in which both ends of the arc tube center are hemispherical and the side surface of the arc tube center is concave.
- FIG. 6 (D) shows an arc tube having a cross section of a right circular cylinder cut so that both ends of the arc tube central portion become hemisphere.
- FIG. 6 (E) shows an arc tube having a cross section in which both ends of the arc tube center are hemispherical and the side surfaces of the arc tube center are elliptical.
- FIG. 6F shows the shape used in Examples 1 and 2.
- Figure 6 (G) shows that the diameter of both ends at the center of the arc tube is large and flat.
- the arc tubes in Fig. 6 (A) and Fig. 6 (E) have the feature that the individual variation of color temperature is particularly small when mass-produced. Therefore, when used in a large amount for ceiling lighting or the like and the color temperature variation is conspicuous, a particularly preferable arc tube shape is obtained.
- the arc tubes in Fig. 6 (C) and Fig. 6 (G) have the characteristic that the light rises quickly when starting. Depending on the design, the time to reach the rated light output can be shortened by about 10 to 2%). Further, it is possible to obtain a lamp which has a particularly small arc curvature at the time of horizontal lighting and a particularly small flicker at the time of lighting.
- Fig. 6 (D) and Fig. 6 (F) can obtain lamps with little change in color temperature during operation.
- the arc tube shown in Fig. 6 (B) is characterized by low production cost due to its simple structure.
- each configuration is in a desirable form for different reasons. Therefore, each configuration has advantages and disadvantages. That is, given the particular active material and other lamp characteristics, certain arc tube configurations out of many configurations will have more advantages than others.
- the ionizable material according to the present invention provided in the discharge region is used, and the distance L between electrodes and the diameter D are as described above.
- the relationship (ie, L / D ⁇ 1.0) is satisfied, an arc discharge metal octogenide lamp having a higher lamp efficiency than before can be obtained.
- the rated power is 150 W, but the rated power of the metal octride lamp of the present invention is not limited to 150 W.
- the luminous efficiency of the lamp increases because the ratio of the loss power of the electrode port to the total power consumption decreases.
- the luminous efficiency of the present embodiment is a value for a lamp having a rated power of about 150 W, and the value differs depending on the rated power of the lamp. As a result, a lamp with improved luminous efficiency can be obtained.
- a metal eight-ride lamp can be realized while achieving both high lamp efficiency and good color rendering as compared with the conventional art. Furthermore, the metal halide lamp of the present invention is designed to be less affected by the fluctuation of the coldest point temperature as an excellent effect by mixing calcium halide and praseodymium halide. Also works favorably. Industrial applicability
- the metal octaride lamp according to the present invention is excellent in both efficiency and color rendering properties, has a small variation in characteristics at the time of manufacture and a small change in characteristics during the life, and can adjust light in a wide range. Therefore, the metal eight-light lamp of the present invention is useful as outdoor lighting such as street light lighting, indoor lighting such as high ceiling lighting, and can be suitably used for store lighting.
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Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04748053A EP1650785B1 (en) | 2003-07-25 | 2004-07-22 | Metal halide lamp |
AT04748053T ATE455363T1 (de) | 2003-07-25 | 2004-07-22 | Metallhalogenidlampe |
JP2005512080A JP3737102B2 (ja) | 2003-07-25 | 2004-07-22 | メタルハライドランプ |
US10/547,060 US7468585B2 (en) | 2003-07-25 | 2004-07-22 | Metal halide lamp |
DE602004025118T DE602004025118D1 (de) | 2003-07-25 | 2004-07-22 | Metallhalogenidlampe |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-279803 | 2003-07-25 | ||
JP2003279803 | 2003-07-25 |
Publications (1)
Publication Number | Publication Date |
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WO2005010921A1 true WO2005010921A1 (ja) | 2005-02-03 |
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ID=34100832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2004/010789 WO2005010921A1 (ja) | 2003-07-25 | 2004-07-22 | メタルハライドランプ |
Country Status (7)
Country | Link |
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US (1) | US7468585B2 (ja) |
EP (1) | EP1650785B1 (ja) |
JP (1) | JP3737102B2 (ja) |
CN (1) | CN100390923C (ja) |
AT (1) | ATE455363T1 (ja) |
DE (1) | DE602004025118D1 (ja) |
WO (1) | WO2005010921A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2010521039A (ja) * | 2006-12-01 | 2010-06-17 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | メタルハライドランプ |
JP2012113883A (ja) * | 2010-11-22 | 2012-06-14 | Iwasaki Electric Co Ltd | メタルハライドランプ |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US7714512B2 (en) * | 2005-10-19 | 2010-05-11 | Matsushita Electric Industrial Co., Ltd. | High red color rendition metal halide lamp |
US7652415B2 (en) | 2005-10-20 | 2010-01-26 | General Electric Company | Electrode materials for electric lamps and methods of manufacture thereof |
WO2008066532A1 (en) * | 2006-11-30 | 2008-06-05 | General Electric Company | Alkaline earth metal halide based electron emissive materials for electric lamps, and methods of manufacture thereof |
DE202009013182U1 (de) * | 2009-09-30 | 2010-11-11 | Osram Gesellschaft mit beschränkter Haftung | Hochdruckentladungslampe mit Zündhilfe |
WO2011056120A1 (en) * | 2009-11-05 | 2011-05-12 | Auralight International Ab | Metal halide lamp with double arc tubes |
JP5305051B2 (ja) * | 2011-06-15 | 2013-10-02 | 岩崎電気株式会社 | セラミックメタルハライドランプ照明装置 |
JP6135908B2 (ja) * | 2013-01-22 | 2017-05-31 | パナソニックIpマネジメント株式会社 | 照明用光源及び照明装置 |
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- 2004-07-22 JP JP2005512080A patent/JP3737102B2/ja not_active Expired - Fee Related
- 2004-07-22 WO PCT/JP2004/010789 patent/WO2005010921A1/ja active Application Filing
- 2004-07-22 CN CNB2004800030497A patent/CN100390923C/zh not_active Expired - Fee Related
- 2004-07-22 AT AT04748053T patent/ATE455363T1/de not_active IP Right Cessation
- 2004-07-22 US US10/547,060 patent/US7468585B2/en not_active Expired - Fee Related
- 2004-07-22 EP EP04748053A patent/EP1650785B1/en active Active
- 2004-07-22 DE DE602004025118T patent/DE602004025118D1/de active Active
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JP2003187744A (ja) * | 2001-12-03 | 2003-07-04 | General Electric Co <Ge> | セラミックメタルハライドランプ |
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JP2010521039A (ja) * | 2006-12-01 | 2010-06-17 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | メタルハライドランプ |
JP2012113883A (ja) * | 2010-11-22 | 2012-06-14 | Iwasaki Electric Co Ltd | メタルハライドランプ |
Also Published As
Publication number | Publication date |
---|---|
EP1650785A1 (en) | 2006-04-26 |
JP3737102B2 (ja) | 2006-01-18 |
CN1745454A (zh) | 2006-03-08 |
EP1650785B1 (en) | 2010-01-13 |
US7468585B2 (en) | 2008-12-23 |
EP1650785A4 (en) | 2008-04-16 |
CN100390923C (zh) | 2008-05-28 |
US20060170363A1 (en) | 2006-08-03 |
DE602004025118D1 (de) | 2010-03-04 |
JPWO2005010921A1 (ja) | 2006-09-14 |
ATE455363T1 (de) | 2010-01-15 |
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