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
  • H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
  • H01J61/20—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent mercury vapour
• • 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
  • H01J61/02—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
  • H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
  • H01J61/827—Metal halide arc lamps

Definitions

• the invention is based on a high-pressure discharge lamp according to the preamble of claim 1.
• These are metal halide lamps.
• Such lamps are particularly high pressure discharge lamps having a ceramic discharge vessel or quartz glass vessel suited for general lighting ⁇ .
• WO 2009/075999 discloses a high pressure discharge lamp using a metal halide fill.
• the high-pressure discharge lamp contains W03 or W02X2 with X selected from Cl, Br, J in support of the cycle process.
• the discharge vessel is ceramic, whereby it is necessary to dispense with rare-earth metals. The same can be found in US 6,362,571 and US 6,356,016.
• US 7057 350 discloses a high pressure discharge lamp using metal halide filling.
• the discharge vessel is ceramic, rare-earth metals being able to be used in consequence of the high wall load, which dissolves oxides out of the ceramic, which can support a cyclic process.
• a metal halide lamp is known ⁇ be that used in a discharge vessel made of quartz glass W02J2 in support of the cycle. Presentation of the invention
• W03 restricts the rare earths to lanthanum, praseodymium, neodymium, samarium and cerium as well as combinations thereof.
• Dy is preferably used as the metal for metal halide alone or in combination with other metals, which leads to particularly good color rendering in such lamps.
• Tungsten oxychloride and / or tungsten oxibromide provided the surprising result of a maintenance improvement in medium power lamps containing a filling in particular of the Daylight type from a color temperature of at least 4800 K.
• these lamps are socketed on one side.
• the oxygen is taken from the ceramic of the discharge vessel.
• a high wall load of more than 33 W / cm 2 is necessary.
• the present invention works with wall loads of 12 to 28 W / cm 2 and quartz glass as a discharge vessel.
• oxygen and halogen are added via W02C12 or W02Br2 or mercury oxyhalide, if appropriate also in combination.
• the Use of mixed W-Hg-Oxihalogenide is not excluded ⁇ .
• the proportion of Dy halide in the filling is preferably 40 to 80% by weight, in particular 50 to 70% by weight.
• the fill amount of oxyhalides of Br or Cl is between 0.5 and 0.02 mg / ml of flask volume. In particular, for lamps of 35 to 150W, it is between 0.5 and 0.05 mg / ml and between 0.25 and 0.02 mg / ml for lamps over 150W. If these limits are not reached, the maintenance improvement is too low; if exceeded, the color temperature and luminous flux decrease too much.
• the inventive concept is particularly suitable for small and medium power lamps in the range 35 to 1000 W, in particular at 100 to 500 W.
• a high-pressure discharge lamp having a bulb made from quartz ⁇ glass, enclosing a discharge volume, which contains a fill comprising mercury and rare gas, and metal Halo ⁇ halides, is accommodated in the discharge volume, characterized in that the filling equal ⁇ time halides of dysprosium and also Oxihalo - genide of tungsten and / or mercury based on the halogens bromine and / or chlorine.
• High-pressure discharge lamp according to claim 1 characterized ⁇ denotes ge that the proportion of Dy halide min ⁇ least 40% and at most 80 wt .-% of Metallhaloge- nid colllung is. 3. High-pressure discharge lamp according to claim 1, characterized ge ⁇ indicates that the metal halide of wei ⁇ direct halides of cesium, and / or thallium and / or vanadium contains. 4. High-pressure discharge lamp according to claim 1, characterized ge ⁇ indicates that the filling is chosen so that a color temperature of at least 4800 K is achieved.
• the high-pressure discharge lamp according to claim 1 characterized denotes Ge, that the wall loading of the Entladungsge ⁇ fäßes in the range 12 to 28 W / cm 2.
• High-pressure discharge lamp according to claim 1 characterized ge ⁇ indicates that the noble gas is argon, xenon krypton or neon or mixtures thereof. 7. High-pressure discharge lamp according to claim 1, characterized ge ⁇ indicates that the discharge vessel is surrounded by a Au ⁇ tkolben. He is in particular also made ⁇ belly.
• High-pressure discharge lamp according to claim 1 character- ized in that the content of Hg in the range 1 to
• High-pressure discharge lamp according to claim 1 characterized ge ⁇ indicates that the filling amount of oxyhalide in the range 0.02 mg / ml and 0.50 mg / ml, in particular in the range 0.02 mg / ml and 0.25 mg / ml , 10. High-pressure discharge lamp according to claim 9, characterized in that the filling amount of oxyhalide in the range 0.02 mg / ml and 0.25 mg / ml is at a power of at least 200 W. 11. High-pressure discharge lamp according to claim 9, characterized in that the amount of oxihalide in the range 0.05 mg / ml and 0.50 mg / ml, with a power of 10 to 175 W.
• High-pressure discharge lamp according to claim 1 characterized in that the filling in the case of Wolfra- moxihalogenid additionally Hg as Hg compound, in particular as iodide, bromide, chloride or oxide.
• High-pressure discharge lamp according to claim 12 characterized in that the additional proportion of Hg compound constitutes about 0.2 to 2 wt .-% of the amount of elemental Hg.
• FIG. 1 shows a high-pressure discharge lamp with discharge vessel with cylindrical outer bulb.
• FIG. 2 shows a high-pressure discharge lamp with discharge vessel with bulbous outer bulb
• Fig. 3 is a diagram showing the maintenance for a
• FIG. 4 is a diagram showing the maintenance for filling with and without tungsten oxyhalide at 400 W lamps;
• Fig. 5 is a diagram showing the maintenance for various reasons.
• Figure 6 is a diagram showing the maintenance for a filling with and without Hg-Oxihalogenid at 400 W lamps.
• FIG. 1 schematically shows a metal halide lamp 1 with a typical power of 100 to 250 W. It consists of a discharge vessel 2 made of quartz glass with two ends 4 into which two electrodes 3 are inserted. The discharge vessel has a central part 5. sit at the ends of two crushing 6. The discharge vessel 2 is surrounded by a cylindrical outer bulb. 7 The discharge vessel 2 is inappelkol ⁇ ben by means of a frame 8, which includes a short and long power supply 9 and 10, supported.
• the discharge vessel contains a filling which typically comprises Hg (3 to 30 mg / cm 3 ) and 0.1 to 1 mg / cm 3 halide.
• a filling typically comprises Hg (3 to 30 mg / cm 3 ) and 0.1 to 1 mg / cm 3 halide.
• argon is used under a pressure of 30 to 300 hPa cold.
• FIG. 2 shows a second exemplary embodiment of a lamp 1 with a discharge vessel 2 made of quartz glass for high power of 200 to 500 W, to which an outer bulb 10 is attached, which is arranged in a central region 11. Belly is.
• the outer bulb is made of quartz glass or hard glass.
• tungsten oxides such as WO 2 or WO 3 in the above-mentioned prior art restricts the rare earths to lanthanum, praseodymium, neodymium, samarium and cerium, as well as combinations thereof.
• Dy is preferably used as metal for metal halide, which leads to particularly good color rendering in such lamps.
• a fitting of tungsten oxichloride and / or tungsten oxibromide gave the surprising result of
• the filling contains, for example, 61 wt.% Dysprosium odid.
• the Wolframoxihalogenid- filling rate is between 0.5 and 0, 05 mg / ml piston volume in lamps from 35 to 150W and between 0.25 and 0.02 mg / ml for lamps over 150W.
• the maintenance of a 250 W lamp with cylindrical outer bulb according to FIG. 1 at 9000 h is 77% without tungsten oxyhalide. With an addition of 0.2 mg W02Br2, maintenance is 85% after 9000h and remains higher than 80% after 12000 h.
• the EUP limit is 80% after 12000 h.
• FIG. 3 shows a diagram in which the two Maintenance ⁇ he were compared for a 250W lamp fillings, normalized to the 100 hour-value of the luminous flux. Since at ⁇ shows that a filling without Wolframoxihalogenid (curve a) at a distance a bad ⁇ res behavior is the same as filling with addition of Wolframoxihalogenid selected here as W02Br2. This filling (curve b) is an EU norms fulfilling Mainte nance ⁇ reached.
• FIG. 4 shows a diagram for 400 W lamps. It shows that a filling without Wolframoxihalogenid (curve a) by far a significantly worse behavior than the same filling with addition of Wolframoxihaloge ⁇ nid, selected here as W02C12. This filling (curve b) achieves an EU-standard maintenance that does not show any decrease in the luminous efficiency in the period up to 2500 h.
• Fig. 5 shows a diagram in which different fillings are compared with each other. These are 400 W lamps. In this case fillings were compared according to Tab. 3 with each other.
• the metal halides used were DyJ3, CsJ, TU and VJ3 (MH filling), in each case 8.4 mg.
• Hg was additionally as indicated as an oxide or iodide zugege ⁇ ben, with or without Wolframoxihalogenid.
• Figure 5 shows that excellent results are achieved by adding tungsten oxyhalide as oxychloride.
• An additional positive effect is achieved by further addition of an Hg compound in the form of oxide, as HgO.
• HgJ2 alone does not show any positive effect, but it does support the effect of
• Tungsten oxyhalides In another embodiment, Hg is added in the form of oxychloride.
• the advantage of Hg302C12 over the tungsten oxyhalides is the better dosability on a production line.
• Tab. 4 and 5 from two ⁇ exemplary embodiments are given for the discharge vessel of quartz glass is ⁇ .
• Vanadium halide in the form of VJ2, VJ3 or VJ4 can in principle be used as the filling component.
• Figure 6 shows a comparison of a filling according to Tab. 5, once without addition ( "150”) and once with addition of Hg oxychloride ( "CL”) (each for horizontal and ver ⁇ Tikale operating position “h””or bu "). The maintenance is drastically improved by adding Hg-Oxichlorid.

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Citations (8)

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• 2010
  • 2010-07-28 DE DE102010038537A patent/DE102010038537A1/de not_active Withdrawn
• 2011
  • 2011-07-18 CN CN201180037074.7A patent/CN103038859B/zh active Active
  • 2011-07-18 EP EP11740592A patent/EP2553710A1/de not_active Withdrawn
  • 2011-07-18 US US13/812,164 patent/US8853943B2/en active Active
  • 2011-07-18 DE DE202011110387U patent/DE202011110387U1/de not_active Expired - Lifetime
  • 2011-07-18 JP JP2013521059A patent/JP5553940B2/ja not_active Expired - Fee Related
  • 2011-07-18 WO PCT/EP2011/062220 patent/WO2012013527A1/de not_active Ceased

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