WO1999043020A1 - Lampe a iodures metalliques exempte de mercure - Google Patents
Lampe a iodures metalliques exempte de mercure Download PDFInfo
- Publication number
- WO1999043020A1 WO1999043020A1 PCT/JP1999/000713 JP9900713W WO9943020A1 WO 1999043020 A1 WO1999043020 A1 WO 1999043020A1 JP 9900713 W JP9900713 W JP 9900713W WO 9943020 A1 WO9943020 A1 WO 9943020A1
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- WIPO (PCT)
- Prior art keywords
- lamp
- halide
- mercury
- amount
- free metal
- Prior art date
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Classifications
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- 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
- H01J61/86—Lamps with discharge constricted by high pressure with discharge additionally constricted by close spacing of electrodes, e.g. for optical projection
-
- 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
Definitions
- the present invention relates to a vehicle lighting system in combination with general lighting and a reflector.
- It relates to mercury-free metal halide lamps used in headlights of Japan.
- a metal halide lamp has been used as a light source for a vehicle headlight or the like.
- Conventional common metal halide lamps contain noble gas (gas), mercury (liquid), and metal halide in the arc tube.
- the arc tube 101 is formed of a translucent container made of quartz. Both ends of the arc tube 101 are sealed by sealing portions 103 and 103, respectively. Inside the arc tube 101, a pair of tungsten electrodes 104, 104 are provided. The electrodes 104 and 104 are respectively connected to the sealing part 1
- the external lead wires 106 and 106 made of molybdenum are connected via the molybdenum foils 105 and 105 which are hermetically sealed in 03 and 103. Have been.
- the main dimensions of this metal harassed lamp are set as follows. 1.7 cc inner volume of arc tube
- the distance between the electrodes is about 16 mm.
- the components of the enclosure 107 are as follows.
- T 1 I (thallium iodide): 0.27 mg (0.16 mg / cc)
- the rare gas (Xe) is sealed mainly to facilitate start-up (discharge start) and to increase light output immediately after start-up.
- Metal halides (T1I, etc.) provide appropriate light output during stable lighting Enclosed for
- mercury is encapsulated to obtain a sufficiently high inter-electrode voltage (operating voltage) required for the lamp to operate properly.
- operating voltage operating voltage
- the action of increasing the operating voltage by the mercury is described in more detail as follows, for example, as disclosed in Japanese Patent Application Laid-Open No. Hei 6-13047.
- V ia 20 + k (proportional constant) X n H g ° ⁇ 56 x L
- V1a is the operating voltage (V)
- n H g is the mercury density per unit volume of the arc tube (mg / cc)
- L is the distance between the electrodes (mm)
- the operating voltage is proportional to the product of the distance between the electrodes and the mercury atom density approximately 1/2.
- the above constant “20” is the sum of the voltage near the electrode and the voltage due to the rare gas and the metal halide.
- the current In order to operate with power, the current must be increased (about 5 A at 5 times the operating voltage of 100 V), and therefore the heat load on the electrodes increases and the electrodes scatter. As a result, the blackening of the arc tube becomes conspicuous, and the luminous flux maintenance rate of the lamp decreases. Specifically, for example, in about several tens of hours, the arc tube turns black and reaches its life.
- the amount of mercury is adjusted so that the operating voltage is increased to, for example, about 70 to 100 V, and the lamp current is reduced. This reduces the heat load (Joule loss) on the electrodes. As a result, a long lamp life of thousands of hours (for example, about 600 hours) can be obtained.
- mercury has the effect of increasing the operating voltage as described above, but has the following disadvantages.
- the luminous efficiency of the lamp is reduced. Because, of all the elements, mercury has a higher excitation voltage than noble gases and emits more light than other metal elements that are added as metal halides. It is difficult. This is also evident from the spectral distribution of the metal halide lamp shown in FIG. That is, the emitted light of the lamp has a plurality of line spectra, and the main wavelengths are 40.1 nm and 45.1 nm by In, and 531 nm by T1. Since the mercury hardly contributes to the light emission at 5.0 nm and 589.0 nm and 589.6 nm according to Na, the light emission by mercury is hardly observed. On the other hand, when mercury is not sealed in the lamp, high luminous efficiency of about 70 (1 m / W) (total luminous flux of about 700 (lm)) can be obtained.
- the production cost tends to be high because a step of injecting liquid mercury is required during production.
- Japanese Patent Application Laid-Open No. Hei 6-84496 discloses a technique for setting the injection pressure of Xe to be high.
- the distance between the electrodes of the lamp is L (mm),
- the operating voltage can be set to 50 V or more by setting to.
- the inventors of the present invention prototyped a lamp having the same shape as that of FIG. 12 described above, and set the main dimensions and the components of the enclosure as follows, and measured the operating voltage. Inner volume of arc tube 0.0 25 c c
- the distance between the electrodes is about 4 mm.
- the components of the enclosure 107 are as follows.
- the ionization voltage of Xe is as high as about 12 eV, it is necessary to apply a considerably high starting voltage to generate a discharge at the start of lamp lighting under a pressure exceeding 25 atm.
- a starting voltage of 30 kV or more is required to reliably discharge.
- the filling pressure exceeds 25 atm, a much higher starting voltage is required. Therefore, the lighting circuit for generating the starting voltage becomes complicated and large, and the manufacturing cost increases.
- the current is increased by increasing the operating voltage of the lamp without enclosing mercury or increasing the internal pressure of the arc tube excessively.
- the lamp life small and to increase the lamp life.
- the conventional metal halide lamp that does not contain mercury does not emit mercury, so the CIE 196 O uv color of the chromaticity point in the emitted light
- the chromaticity deviation (DUV) from the blackbody locus on the power diagram is 0.011, and when used as a white automobile headlight, the automobile headlight specified by the Japan Light Bulb Manufacturers Association.
- JEL215 the standard deviated from the standard shown in the HID light source (JEL215) for the vehicle.
- the present invention solves the above-mentioned problems, and achieves a high lamp operating voltage and a long lamp life without enclosing mercury or excessively increasing the internal pressure of an arc tube.
- the purpose is to provide a mercury-free metal halide lamp that can obtain the following.
- the present invention provides:
- the metal described above has an ionization voltage of 5 to 10 eV for a single metal, and the metal or its halogenated compound has a vapor pressure of 10 to 15 atm at the temperature at which the lamp is turned on. It is characterized by the above.
- the metal or its halide for example, Y (yttrium), In (indium), or a halide thereof can be used.
- the operating voltage of the lamp can be increased without encapsulating a rare gas at a high pressure, and Since the current flowing through the electrodes can be reduced, the heat load on the electrodes can be reduced, blackening of the arc tube due to scattering of the electrodes can be suppressed, and a long lamp life can be obtained.
- a substance that does not satisfy the above conditions that is, a substance whose ionization voltage of a single metal is 5 eV or less, for example, CsI (cesium iodide: ionization voltage of 3.9 eV) was added.
- the operating voltage decreases. This is because a large amount of electrons is supplied into the arc due to the low ionization voltage, resulting in an increase in the lamp current and a corresponding decrease in the operating voltage.
- a substance having an ionization voltage of 10 eV or more, such as Hg (mercury) is added to a single metal, the lamp efficiency is reduced.
- run-1 0 5 following materials having a vapor pressure at the temperature at the time of lighting the flop for example, B a
- the chromaticity point in the emitted light of the lamp is represented on a CIE1931 xy chromaticity diagram by:
- the amount of each enclosure and the rated power are set so as to satisfy the above.
- a halogenated metal of the above-mentioned metal 0.8 mg / cc or more per unit arc tube internal volume, YI 3 of 12 mg / cc or less may be sealed, and the rated power may be set to 25 W or more and 55 W or less.
- the chromaticity deviation of the chromaticity point of the emitted light of the lamp from the locus of the black body on the CI ⁇ 960 uv chromaticity diagram is ⁇ 0.025 or more, It is characterized in that the amount of each of the above-mentioned inclusions and the rated power are set so as to be 0 1 or less. Specifically, for example,
- the amount of S cl 3 enclosed, the amount of N al enclosed, and the rated power of the lamp are:
- Inclusion weight of A S c I 3 / (enclosed by weight of encapsulated wt + N a I a S c I 3)
- a lamp that emits light with particularly high whiteness can be obtained, and for example, it can be used as a vehicle headlight.
- the present invention provides the above-mentioned respective enclosures so that the luminous flux of the emitted light of the lamp is at least about 110 (lm), more preferably at least about 275 (lm). It is characterized in that the amount of electricity and the rated power are set. Specifically, for example,
- Inclusion weight of A S c I 3 / (enclosed by weight of encapsulated wt + N a I a S c I 3)
- the present invention provides:
- I n (indium) and at least one of its halides, T 1 (thallium) and at least one of its halides, Na (sodium) and its halides A mercury-free metal halide lamp encapsulating at least one of them;
- the amount of In or the halide thereof is an amount that generates an absorption spectrum at wavelengths around 410 nm and 451 nm in the spectral distribution of emitted light from the lamp.
- the amount of T 1 or a halide thereof is an amount that generates an absorption spectrum at a wavelength around 5355 nm in the spectral distribution of emitted light from the lamp.
- the amount of Na or a halide thereof is characterized in that it is an amount that generates an absorption spectrum at a wavelength of around 589 nm in the spectral distribution of emitted light of the lamp.
- the inventors of the present invention have found that a larger amount of In or the like is enclosed as the absorption spectrum as described above is generated, that is, a larger amount of In or the like than expected from the conventionally known amounts.
- the inventors have found that the operating voltage of the lamp can be greatly increased, and completed the present invention. As a result, the operating voltage of the lamp can be increased and the current flowing through the lamp can be reduced without filling a rare gas at a high pressure. Therefore, it is possible to reduce the heat load on the electrodes, suppress blackening of the arc tube due to the scattering of the electrodes, and obtain a long lamp life.
- the amount of the above-described In or the halide thereof is, for example, 4 mg / cc or more, 12 mg / cc or less, and T
- the amount of 1 or its halide is 4 mg / cc or more and 16 mg / cc or less per unit arc tube volume
- the amount of Na or its halide is 4 units per unit arc tube volume. It may be set to a value between mg / cc and 12 mg / cc.
- the chromaticity point in the emitted light of the lamp is represented on a CIE1931 xy chromaticity diagram by:
- the lamp can be used, for example, as a vehicle headlight.
- the lamp is characterized in that the rated power of the lamp is set to 25 W or more and 55 W or less.
- the present invention is characterized in that the rare gas Xe is sealed at room temperature at 1 atm or more and 25 atm or less at room temperature.
- the arc tube is not easily ruptured and leaks of the sealed substance are unlikely to occur, and the mercury-free metal halide having a low operating voltage as described above. You can get a lamp.
- FIG. 1 is a cross-sectional view showing a configuration of a mercury-free metal halide lamp according to the first to fourth embodiments.
- FIG. 2 is an explanatory diagram showing chromaticity points of synchrotron radiation of the mercury-free metal halide lamp of the first embodiment.
- FIG. 3 is an explanatory diagram showing chromaticity points of synchrotron radiation when the amount of YI 3 encapsulated in the mercury-free metal halide lamp of the first embodiment is set variously.
- FIG. 4 is a diagram showing the mercury-free silver of the second embodiment. Explanatory diagram showing the chromaticity points of synchrotron radiation
- FIG. 5 is an explanatory diagram showing the relationship between the ScI weight ratio, unit power, and DUV of the mercury-free metal halide lamp of the third embodiment.
- FIG. 6 shows the radiation of the mercury-free metal halide lamp of the third embodiment.
- FIG. 7 shows the Scl weight ratio of the mercury-free metal halide lamp according to the third embodiment and the lamp power.
- FIG. 7 shows the region where the DUV of the chromaticity point is ⁇ 0.025 to 0.01.
- FIG. 8 shows the relationship between the luminous flux of the mercury-free metal halide lamp according to the third embodiment and the magnitude of the luminous flux of the luminous flux is greater than or equal to 275 (1 m).
- FIG. 9 is an explanatory diagram showing a spectral distribution of a mercury-free metal halide lamp according to the fourth embodiment.
- FIG. 10 is an explanatory diagram showing chromaticity points of synchrotron radiation of the mercury-free metal halide lamp of the fourth embodiment.
- FIG. 11 is an explanatory diagram showing the relationship between the lamp power of the mercury-free metal halide lamp of the fourth embodiment and the magnitude of the luminous flux of the emitted light.
- Fig. 12 is a cross-sectional view showing the configuration of a conventional metal halide lamp.
- Fig. 13 is an explanatory diagram showing the spectral distribution of a conventional metal halide lamp.
- the mercury-free metal halide lamp of the first embodiment is configured by enclosing an enclosure 202 in a substantially spherical arc tube 201.
- the arc tube 201 is formed of a translucent container made of quartz. Both ends of the arc tube 201 are sealed by sealing portions 203 and 203, respectively.
- a pair of tungsten electrodes 204 and 204 are provided inside the arc tube 201.
- the electrodes 204 and 204 are connected to the molybdenum foils 205 and 205 through airtightly sealed molybdenum foils 205 and 205, respectively, in the sealing portions 203 and 203.
- the main dimensions of this lamp are set as follows.
- the inner volume of the arc tube is about 0.025 cc.
- the distance between the electrodes is about 4 mm.
- the components of the enclosure 202 are as follows.
- Y I yttrium iodide
- Xe (Xenon): Approx. 700 kPa (Normal temperature Xe acts as a starting gas.
- Y yttrium contained in YI alone The ionization voltage is 6.4 eV.
- the voltage (operating voltage) across the lamp will be 35 V.
- the operating voltage can be increased by 7 V, compared to 28 V. Since the operating voltage is high as described above, the lamp current when the lamp is lit with the same lamp power can be suppressed to a small value. Therefore, the heat load (heat loss) of the electrodes 204 and 204 is reduced, and an excessive rise in temperature is prevented, so that the blackening phenomenon of the arc tube 201 is suppressed and the luminous flux maintenance rate is good. And lamp life Life is longer.
- the ionization voltage is 5 ⁇ 1 0 e V at the metal alone
- a material containing a material having a vapor pressure of 10 to 15 atm or more at the temperature when the lamp is turned on may be used.
- the ionization voltage of Y alone is 6.4 eV as described above.
- the vapor pressure at the temperature at which the lamp is lit can be obtained as follows. That is, in the above lamp example, the coldest temperature of the outer surface of the arc tube 201 at the time of lighting was about 700 ° C. below the arc tube 201.
- the temperature of the inner surface of the arc tube 2 0 1 was estimated to be approximately 8 0 0 ° C, the vapor pressure of YI 3 at a temperature of this is about 1 0 one 5 atm .
- the luminous flux of the lamp was about 470 (1 m). In other words, a sufficiently large luminous flux can be obtained, for example, while the luminous flux of a halogen lamp generally used for a vehicle headlight is about 110 (lm). . Therefore, it satisfies the condition of the luminous flux that can be used as a vehicle headlight.
- Figure 2 shows the chromaticity points of the emitted light from the above lamp plotted on the CIE1931 xy chromaticity diagram.
- the area P surrounded by a solid line in the figure is the chromaticity range of the white light source specified by the HID light source for automotive headlights (JEL215) specified by the Japan Light Bulb Manufacturers Association, and is shown below. It is expressed by the formula. X ⁇ 0.31 0
- the lamp of the present embodiment satisfies the chromaticity of the white light source for a vehicle headlight.
- the chromaticity varies depending on the amount of YI 3 added and the lamp power. Therefore, the lamp was set variously the amount of YI 3, shown in Figure 3 those plot similar chromaticity when is lit by lamp power of 4 5 W and FIG. That is, as the amount of YI 3 added increases, the effect of Y emission, which produces abundant emission in the blue region, increases, and the values of X and y in chromaticity decrease. Therefore, as can be seen from the figure, the addition amount of YI 3 is 0.8 to 12 mg / cc per unit arc tube volume (when the arc tube volume is 0.025 cc, 0.02 The chromaticity of the white light source in the above standard can be obtained in the range of 0 to 3 mg). In addition, when the lamp power was changed variously, the same chromaticity was obtained in the case of 25 to 55 W. (Embodiment 2)
- the luminous flux of the lamp was about 360 (1 m).
- a sufficiently large luminous flux can be obtained compared to a halogen lamp (about 1100 (1 m)) generally used for vehicle headlights, and the vehicle headlight It satisfies the condition of luminous flux that can be used for lighting.
- the ionization voltage of I (indium) alone in I nl is 5.8 eV.
- the temperature of the inner surface of the arc tube is estimated to be about 800 ° C. in the same manner as in Embodiment 1, and the vapor pressure of Inl at this temperature is about 2 atm.
- Fig. 4 shows a plot of the chromaticity points of the emitted light from the lamp in the same manner as in Fig. 2. From the figure, it is confirmed that the lamp of the present embodiment also satisfies the chromaticity of the white light source for a vehicle headlight. (Embodiment 3)
- the ratios of ScI and NaI in the inclusions are variously set. That is, as the metal halide in the lamp enclosure, 0.4 mg of YI 3 and 0.25 mg of Scl 3 and Nal in total (total of metal halides) Is 0.65 mg). In here, as the weight ratio of S c I 3 to the sum of S cl and N a I (the value of this large, 99/00713
- the weight of S c I 3 is large. Hereinafter, it is referred to as “S c I weight ratio”. ) Is set to 0.016, 0.75, or 1 (not including Nal). Other shapes of the inclusions and the lamp are the same as those in the first embodiment.
- Table 1 The operating voltage when the above lamp is turned on with 35 W lamp power is shown below (Table 1). Incidentally, in the table, taken together describes also run-up, and the operating voltage of the lamp without the YI 3 of the first embodiment. (Table 1) Lamp power: 35 (W)
- the lamps set at the various S c I 3 weight ratios described above were lit at a lamp power of 20-55 W, and the CIE 196 O uv chromaticity diagram of the chromaticity point in the emitted light in each case.
- the chromaticity deviation from the blackbody locus above (deviation from the blackbody locus; hereinafter referred to as “DUV”) was determined.
- the horizontal axis represents the Sc I 3 weight ratio
- the vertical axis represents the lamp power per unit electrode distance (lamp power / electrode distance: hereinafter, referred to as “unit power”).
- unit power lamp power per unit electrode distance
- the positions of the plots indicate the actual light emission conditions, and the DUV for each light emission condition is attached to each plot. Also, when the three parameters of the Sc I 3 weight ratio, unit power, and DUV were approximated by a quadratic equation using the least squares method, the DUV corresponding to the emission conditions was: It can be expressed as follows.
- A is S cl 3 weight ratio (S c I 3 / (S c I 3 + N a I)) B , the unit power (lamp power / distance between electrodes) (W / mm) D is DUV
- the lamp that satisfies the DUV of a white light source for a vehicle headlight and can be used as a white light source for a vehicle headlight can be obtained.
- lamps set at various S cl 3 weight ratios are lit with a square wave current of 400 Hz and a lamp power of 20 to 55 W, and in each case, The size of the luminous flux was measured.
- the results are shown in Fig. 7.
- the positions of the plots indicate the actual light emission conditions, and the size of the luminous flux under the light emission conditions is given to each plot.
- the magnitude of the luminous flux according to the emission conditions Can be expressed as follows.
- A is, S cl 3 weight ratio (S c I 3 / (S c I 3 + N a I)) c is the lamp power (w)
- E is the size of the luminous flux (lm)
- the light emission conditions are further determined so that the light flux has a predetermined value of 100 (lm) steps, and the coordinates of the light emission conditions in FIG. Draw contour lines of size.
- a region R in which the light flux size is greater than or equal to 275 (lm) is indicated by oblique lines.
- This area R is the range of the luminous flux of a normal metal halide lamp specified by the Japan Light Bulb Manufacturers Association standard HID light source for automobile headlights (JEL215). In other words, the lighting conditions
- a normal metal halide lamp is used as a white light source for a vehicle headlight.
- a lamp that has a luminous flux equal to or greater than that required when used and can be used as a white light source for automotive headlamps is obtained.
- This lamp has the same shape as the lamp of the first embodiment, except that the distance between the electrodes is about 4.2 mm.
- the components of the enclosure are as follows. Inl (indium iodide): about 0.2 mg (8.0 mg / cc)
- T 1 I (tallium iodide): about 0.2 mg (8.0 mg
- the chromaticity points of the emitted light when the above lamps were turned on with a lamp power of 35 to 45 W were plotted on the CIE 1993 lxy chromaticity diagram as in the first embodiment. These are shown in Figure 10. As shown in the figure, the lamp of the present embodiment satisfies the chromaticity of the white light source specified by the HID light source for automotive headlights (JEL2115) of the Japan Light Bulb Manufacturers Association. And.
- the amount of halogenated compounds of In, T1, and Na to satisfy the chromaticity according to the above-mentioned standard is determined by the unit volume per unit arc tube.
- the luminous efficiency of the lamp was about 70 (lm / W), that is, a total luminous flux of 315 (1 m) at a lamp power of 45 W.
- a halogen lamp generally used for a vehicle headlight has a total luminous flux of about 110 (lm) at a rated power of 55 W. therefore, PT / JP99 713
- a luminous flux larger than that of the above-mentioned conventional halogen lamp can be obtained.
- a larger luminous flux can be obtained, and a brighter automobile headlight can be obtained.
- the rated power is set to, for example, about 25 to 55 W, it is possible to obtain the optimal lamp for the light source for automobile headlights in consideration of the chromaticity shown in Fig. 10. it can.
- YI 3 or InI is contained in the encapsulation.However, the present invention is not limited to this, and a metal or a metal halide may be used.
- the ionization voltage is 5 to 10 eV and the vapor pressure at the lamp lighting temperature is 10 to 5 atm or more, the effect of increasing the operating voltage can be obtained similarly.
- YB r Nioikai Tsu Application Benefits um
- I nl 3 3 Yo Ukai indium
- S b I Yo U of antimony
- I n B r bromide It may contain indium
- T1I thallium iodide
- a combination of these plural types may be included.
- Xe of 7 atm or 70 OkPa is sealed at room temperature to facilitate starting of the lamp.
- PT / JP99 / 00713 the type and pressure of the noble gas are not limited to the above.
- Xe is suitable because it has the highest boiling point among the rare gases excluding Rn (radon) and is easy to pack under high pressure. It is suitable for use in lamps, but is not limited to this, and other rare gases, such as Ar (argon) gas, can also be used to increase the operating voltage.
- Ar argon
- the sealing pressure is not limited to the above, but a high pressure of about 1 atm or more is preferable in consideration of the rising characteristics of the luminous flux at the time of starting, and in consideration of the breaking strength of the lamp, 2 5 atm or less is preferable o
- the filling amount and the filling ratio of the filling material and the lamp power are set so that the chromaticity and luminous flux required for the lamp for a vehicle headlight can be obtained.
- An example was shown, but the present invention is not limited to this.
- a particularly high whiteness and a large luminous flux can be obtained, but a good whiteness and a relatively large luminous flux can be obtained even if the filling amount, the filling ratio and the lamp power are not within these ranges. It can also be used for lamps other than those for automobile headlights, because it can increase the operating voltage.
- the shape and size of the lamp are not limited to those described above.
- a mercury-free metal halide lamp includes a rare gas, Sc or its halide, Na or its halogen in an arc tube. And ionization voltage of metal alone is 5 to 10
- the operating voltage of the lamp is increased by enclosing a metal or its halide, which is eV and has a vapor pressure of 10 to 5 atm or more at the temperature at which the lamp is lit.
- the current flowing through the lamp can be reduced, reducing the heat load on the electrode, suppressing blackening of the arc tube due to the scattering of the electrode, and obtaining a long lamp life. This has the effect of being able to do so.
- a rare gas, In or its halide, T 1 or its halide, Na or its halide are sealed in the arc tube, and In or its halide, T 1 or its halide, and Na or its halide are enclosed in the spectral distribution of synchrotron radiation, respectively, at around 410 nm, around 451 nm, around 535 nm, or 589
- By setting the amount to generate an absorption spectrum at a wavelength around nm it is possible to increase the operating voltage of the lamp and obtain a long lamp life. It has the effect of being able to do it.
- the rare gas is Xe, which is sealed at a filling pressure of not less than 1 atm and not more than 25 atm at room temperature, so that the arc tube is ruptured and the leakage of the filling material is caused. Can reduce the risk of birth.
- the present invention is useful in fields such as general lighting and automobile headlights.
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/381,140 US6265827B1 (en) | 1998-02-20 | 1999-02-17 | Mercury-free metal halide lamp |
EP99905225A EP1037258B1 (en) | 1998-02-20 | 1999-02-17 | Mercury-free metal halide lamp |
DE69940721T DE69940721D1 (de) | 1998-02-20 | 1999-02-17 | Quecksilberfreie metallhalogenidlampe |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10/38417 | 1998-02-20 | ||
JP3841798 | 1998-02-20 | ||
JP10/261153 | 1998-09-16 | ||
JP10261153A JP2000090880A (ja) | 1998-09-16 | 1998-09-16 | メタルハライドランプ |
JP10/264649 | 1998-09-18 | ||
JP26464998A JP3388539B2 (ja) | 1998-02-20 | 1998-09-18 | 無水銀メタルハライドランプ |
Publications (1)
Publication Number | Publication Date |
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WO1999043020A1 true WO1999043020A1 (fr) | 1999-08-26 |
Family
ID=27289821
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP1999/000713 WO1999043020A1 (fr) | 1998-02-20 | 1999-02-17 | Lampe a iodures metalliques exempte de mercure |
Country Status (7)
Country | Link |
---|---|
US (1) | US6265827B1 (ja) |
EP (1) | EP1037258B1 (ja) |
KR (1) | KR20000075542A (ja) |
CN (2) | CN1324643C (ja) |
DE (1) | DE69940721D1 (ja) |
MY (1) | MY119744A (ja) |
WO (1) | WO1999043020A1 (ja) |
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EP1158567A3 (en) * | 2000-05-26 | 2002-01-16 | Matsushita Electric Industrial Co., Ltd. | Mercury-free high-intensity discharge lamp operating apparatus and mercury-free metal halide lamp |
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CN1324643C (zh) * | 1998-02-20 | 2007-07-04 | 松下电器产业株式会社 | 无汞金属卤化物灯 |
US6376988B1 (en) * | 1998-08-28 | 2002-04-23 | Matsushita Electric Industrial Co., Ltd. | Discharge lamp for automobile headlight and the automobile headlight |
KR20010006751A (ko) * | 1999-03-11 | 2001-01-26 | 모리시타 요이찌 | 무수은 메탈핼라이드 램프 |
JP3728983B2 (ja) * | 1999-06-25 | 2005-12-21 | スタンレー電気株式会社 | メタルハライドランプおよび車両用前照灯 |
US6833676B2 (en) * | 2000-03-09 | 2004-12-21 | Advanced Lighting Technologies, Inc. | Solid lamp fill material and method of dosing HID lamps |
US6661175B2 (en) * | 2000-03-09 | 2003-12-09 | Advanced Lighting Technologies, Inc. | Solid lamp fill material and method of dosing hid lamps |
CN1333547A (zh) * | 2000-07-14 | 2002-01-30 | 松下电器产业株式会社 | 无水银金属卤化物灯 |
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- 1999-02-17 DE DE69940721T patent/DE69940721D1/de not_active Expired - Lifetime
- 1999-02-17 KR KR1019997007601A patent/KR20000075542A/ko not_active Application Discontinuation
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- 1999-02-19 MY MYPI99000582A patent/MY119744A/en unknown
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EP1158567A3 (en) * | 2000-05-26 | 2002-01-16 | Matsushita Electric Industrial Co., Ltd. | Mercury-free high-intensity discharge lamp operating apparatus and mercury-free metal halide lamp |
US6608444B2 (en) | 2000-05-26 | 2003-08-19 | Matsushita Electric Industrial Co., Ltd. | Mercury-free high-intensity discharge lamp operating apparatus and mercury-free metal halide lamp |
Also Published As
Publication number | Publication date |
---|---|
EP1037258A4 (en) | 2006-08-09 |
CN1324643C (zh) | 2007-07-04 |
EP1037258B1 (en) | 2009-04-15 |
US6265827B1 (en) | 2001-07-24 |
CN1256790A (zh) | 2000-06-14 |
MY119744A (en) | 2005-07-29 |
EP1037258A1 (en) | 2000-09-20 |
CN100339935C (zh) | 2007-09-26 |
DE69940721D1 (de) | 2009-05-28 |
CN1558445A (zh) | 2004-12-29 |
KR20000075542A (ko) | 2000-12-15 |
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