WO2012016389A1 - Ceramic metal halide lamp shell - Google Patents

Ceramic metal halide lamp shell Download PDF

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Publication number
WO2012016389A1
WO2012016389A1 PCT/CN2010/076577 CN2010076577W WO2012016389A1 WO 2012016389 A1 WO2012016389 A1 WO 2012016389A1 CN 2010076577 W CN2010076577 W CN 2010076577W WO 2012016389 A1 WO2012016389 A1 WO 2012016389A1
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WIPO (PCT)
Prior art keywords
discharge chamber
metal halide
ceramic metal
halide bulb
bulb according
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PCT/CN2010/076577
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French (fr)
Chinese (zh)
Inventor
张万镇
谢灿生
陆镇洲
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潮州市晨歌电光源有限公司
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Publication of WO2012016389A1 publication Critical patent/WO2012016389A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
    • H01J61/366—Seals for leading-in conductors
    • 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

Definitions

  • the invention belongs to the field of ceramic light sources, and in particular relates to a ceramic metal halide bulb shell.
  • the translucent alumina tubes in the world mainly have an integrated structure, a two-piece structure, a three-piece structure, or even a five-piece structure, but one structure is basically the same, that is, the capillary portion is a straight tube structure and a discharge chamber.
  • the inner surface is basically a quadratic curved structure such as a cylinder, an ellipsoid or a spherical shape.
  • the current ceramic metal halide lamp manufacturer uses a sealing method that heats the glass solder together with the ceramic tube and the electrode.
  • the melting point of the glass solder is lower than the softening point of the ceramic, and it needs to have good fluidity after melting, and then penetrates. In the gap between the ceramic capillary and the electrode assembly, the sealing of the ceramic tube is completed after cooling.
  • the ceramic metal halide bulb case is composed of a discharge chamber 1 and a capillary tube 2 disposed at both ends of the discharge chamber 1.
  • the capillary tube 2 has a straight cylindrical structure.
  • the sealing of the electrode of this structure is filled with the capillary 2 by the glass solder 3.
  • the gap of the electrode rod 4 is completed, so that there is a large gap between the capillary tube 2 and the electrode rod 4, and a large gap causes a loss of the halogen into the gap.
  • the bell mouth structure 5 is formed in the portion where the capillary tube 2 and the discharge chamber 1 are overlapped, and the structure is easy to form a cold spot, where gold halide deposition is likely to occur, so that the halogen does not all participate in the cycle, and causes the pair thereof.
  • the erosion of ceramic metal halide lamps affects the working efficiency and life of the lamps.
  • the object of the present invention is to provide a ceramic metal halide bulb shell which is simpler in packaging and better in sealing effect.
  • the technical solution of the present invention is: a ceramic metal halide bulb shell, comprising a discharge chamber and a capillary tube disposed at two ends of the discharge chamber, the capillary tube comprising a connected inner tube portion and a welding groove, the inner tube portion being close to the discharge chamber
  • the welding groove is located at the end surface, and the inner diameter of the welding groove is larger than the inner tube portion, and the welding groove realizes the hermetic sealing of the discharge chamber by filling the solder.
  • a welded groove structure is formed at the end surface of the capillary tube, and the conventional sealing position is transferred from the capillary tube wall to the nozzle opening, and the diameter of the nozzle opening is large, which greatly facilitates the soldering and the sealing.
  • the solder is substantially melted in the weld groove and the sealing is completed without the need to pass a relatively long flow to the capillary tube wall to complete the sealing, mainly because the diameter of the capillary tube is comparable to the diameter of the electrode, and there is no gap.
  • the position of the solder of the present scheme is farther away from the arc high temperature region than the position where the solder is located in the prior art soldering process, and the length of the capillary tube can be correspondingly reduced, which contributes to some applications requiring a shorter size for the bulb.
  • the cold end position of this scheme can effectively control the front, and because it is closer to the heat source part, the cold end temperature is increased and the working pressure of the light source is ensured.
  • the program removes the bell mouth structure formed by the portion where the capillary and the discharge chamber are connected, thereby avoiding the phenomenon that the cold end temperature is too low.
  • Capillary is high precision, high collimation, high coaxiality, so the inner wall of the capillary can be most closely matched with the electrode rod, and the gap between them can be controlled to an accuracy of less than 5 microns, which prevents the luminescent substance from penetrating into the capillary.
  • the life of the tube is increased and the coaxiality of the electrodes during lamp fabrication is increased.
  • the welding groove has an outward shrinkage structure or a plurality of concave/convex groove structures on the side of the welding groove, so that the welding is more secure, and the existing electrode welding solder sagging flow is prevented, and the encapsulation is incomplete, so that the lamp is early Invalid.
  • connection between the outer curved surface of the discharge chamber and the capillary is a smooth transition structure, which minimizes the stress.
  • the discharge cavity is a non-homogeneous even isothermal curved cavity, which is:
  • x, y, and z represent the parametric variables of the surface of the discharge cavity
  • a and b are the semi-major and semi-minor axes of the surface of the discharge cavity, the values of which are determined by the power requirements, and a: b ⁇ 1, c 2 : b > 1, c n : c n-1 ⁇ 5.
  • Such a curved surface guarantees the uniformity of the internal properties of the bulb and a It is the most reasonable to reduce the structural stress of the bulb.
  • the cavity design is different from the cylindrical, spherical or pure ellipsoid type used.
  • the inner surface of the cavity is designed to be the isothermal surface closest to the operation of the blister. Since the temperature follows the quadratic differential equation, and considering that the electrodes are linearly distributed, the actual isothermal surface is a non-homogeneous quadratic surface with quadratic terms, ie an isothermal surface corrected by a linear arc distribution.
  • Such a curved surface design can minimize the temperature gradient of the bulb and maximize the pressure resistance, which helps to improve the light efficiency, color rendering and life of the lamp.
  • the semi-major axis of the curved surface of the discharge chamber ranges from 2 mm ⁇ a ⁇ 10 mm, and the isothermal curved surface of the discharge chamber extends from the inner wall of the discharge chamber to the intersection with the inner wall of the capillary.
  • the outer surface of the discharge chamber is provided with a layer of reflective material to make the light have directivity, and the light is greatly improved when the lamp is not used.
  • the addition of the reflective material layer effectively reduces the need for additional reflective components outside the bulb, directly reducing the production process and cost.
  • the layer of the reflective material is located on a half surface of the outer surface of the discharge chamber along the long axis direction or the short axis direction.
  • the discharge chamber is made of alumina, and the chemical composition molar ratio of the reflective material layer satisfies 100Al 2 O 3 +x(aSiO 2 +bB 2 O 3 +cM 1 O+dM 2 O 0.5 )+yM 3 , Wherein 0.1 ⁇ x ⁇ 3, 0.1 ⁇ a ⁇ 6, 0.05 ⁇ b ⁇ 5, wherein M 1 is one of Ca, Mg, Sr, Ba or a mixture of several alkaline earth metal oxides, and 0 ⁇ c ⁇ 3; M 2 is one of Na, K, Li or a mixture of several alkali metal oxides, and 0 ⁇ d ⁇ 3.5, M 3 is Ti, Zr transition metal oxide or Eu 2 O 3 , Y 2 One or a mixture of rare earth element oxides such as O 3 , 0 ⁇ y ⁇ 6.
  • the reflective material layer can withstand a high temperature of 1450 ° C or higher, has good thermal stability, has a high reflectance in the visible light wavelength range, and has a reflectance of 98% or more, and has substantially zero absorption of visible light.
  • the layer of the reflective material is sintered or coated and fixed on the outer surface of the discharge chamber portion, and has a thickness greater than or equal to 0.05 mm.
  • the reflective material layer has a thermal expansion coefficient close to that of the aluminum oxide discharge chamber, and is sintered or coated on the outer surface of the discharge chamber portion for a long time without component change or falling off; the reflective material is selectively applied to the bulb
  • the outer surface of the bulb causes the bulb to be directional, and the reflector can be omitted, thereby reducing production costs.
  • the outer surface of the discharge chamber not provided with the reflective material layer is covered with a glass transparent glaze layer, the thickness of which is greater than 50 nm, which effectively improves the direct transmittance of the ceramic metal halide lamp, and greatly improves the light effect and performance.
  • the glass transparent glaze material has good thermal stability, the glass transition temperature Tg is not lower than 910 ° C, the softening point temperature is higher than 1000 ° C, and its expansion coefficient is close to that of the alumina discharge chamber, so it can work safely and stably on the surface of the bulb. ;
  • Coating a surface of the aluminum oxide discharge chamber with a transparent glass glaze layer can make the surface of the discharge chamber smoother and improve the linear transmittance of the aluminum oxide discharge chamber, which can be directly coated on the surface of the entire discharge chamber, or can be high
  • the reflective material is used at the same time and is applied to other portions of the surface of the discharge chamber where the layer of reflective material is not present, thereby increasing the straight-through rate.
  • FIG. 1 is a cross-sectional structural view of a prior art ceramic metal halide bulb case
  • Figure 2 is a cross-sectional structural view showing a ceramic metal halide bulb according to the present invention.
  • 3a-3e are cross-sectional structural views of a blister with various welded groove structures
  • 4a and 4b are cross-sectional structural views of a blister with a reflective material layer and a glass transparent glaze layer.
  • the present invention discloses a ceramic metal halide bulb shell comprising a discharge chamber 6 and a capillary tube 7 disposed at two ends of the discharge chamber 6.
  • the capillary tube 7 includes a connected inner tube portion 71 and a soldering groove 72.
  • the tube segment 71 is adjacent to the discharge chamber 6, the weld groove 72 is located at the end surface, and the inner diameter of the weld groove 72 is larger than that of the inner tube portion 71.
  • the weld groove 72 is filled with the solder 73 to achieve a hermetic seal of the discharge chamber 6.
  • the weld groove 72 has an inner diameter of 1 to 4 mm, a depth of 1-4 mm, and an inner tube inner diameter of 0.4 to 1.5 mm.
  • the cold end 10 of the scheme can effectively control the front, and the temperature of the cold end 10 is improved due to the closer proximity to the heat source portion, and the light is ensured.
  • the working pressure of the source can prevent the luminescent substance from penetrating into the capillary 7, increasing the life of the blister and increasing the coaxiality of the electrode during the process of making the lamp.
  • the diameter of the capillary tube 7 can be arbitrarily made according to the power of the lamp.
  • the diameter of the tube is high precision, high collimation, and high coaxiality to ensure a tight fit with the electrode rod to achieve a minimum gap.
  • the gap between the two can be controlled. Accuracy at less than 5 microns.
  • the soldering groove 72 has an outwardly constricted structure or a plurality of concave/convex grooves on the side of the soldering groove 72, so that the welding is more secure, and the conventional soldering of the conventional electrode is prevented from sagging. Flow, incomplete encapsulation, and early failure of the lamp.
  • the welding groove 72 may have a truncated cone structure or a truncated cone or a spherical structure.
  • the junction of the outer curved surface of the discharge chamber 6 and the capillary 7 is a smooth transition structure, which minimizes the stress.
  • the discharge chamber 6 is a non-homogeneous even isothermal curved cavity, which is specifically:
  • x, y, and z represent the parametric variables of the curved surface of the discharge chamber 6, and a and b are the semi-major and semi-minor axes of the curved surface of the discharge chamber 6, the values of which are determined by the power requirement, and a: b ⁇ 1, c 2 : b>1, c n : c n-1 ⁇ 5.
  • the even time can be four times, that is, the non-homogeneous four-time curved cavity is:
  • x, y, and z represent the parametric variables of the curved surface of the discharge chamber 6, and a and b are the semi-major and semi-minor axes of the curved surface of the discharge chamber 6, the values of which are determined by the power requirement, and a: b ⁇ 1, c: b >1.
  • the inner surface of the prior art ceramic blister discharge cavity is a quadratic curved structure such as a cylinder, an ellipsoid or a spherical shape, but since the electrodes are linearly distributed, the ideal isothermal surface should be a non-homogeneous second with one term.
  • the secondary surface while the traditional structure is only a quadric surface, so the structure has a large temperature gradient inside the ceramic tube, which is not conducive to improving the light efficiency, color rendering and life of the lamp; The uniformity and consistency of the internal properties of the bulb are ensured, and the structural stress of the bulb is most rationally reduced.
  • the cavity design is different from the cylindrical, spherical or pure ellipsoid type used.
  • the inner surface of the cavity is designed to be the isothermal and isostatic surfaces closest to the operation of the blister. Since the temperature follows the quadratic differential equation, and considering that the electrodes are linearly distributed, the actual isothermal surface is a non-homogeneous quadratic surface with quadratic terms, ie an isothermal surface corrected by a linear arc distribution. Such a curved surface design can minimize the temperature gradient of the bulb and maximize the pressure resistance, which helps to improve the light efficiency, color rendering and life of the lamp.
  • the semi-major axis of the curved surface of the discharge chamber 6 is 2 mm ⁇ a ⁇ 10 mm, and the isothermal curved surface of the discharge chamber 6 extends from the inner wall of the discharge chamber to the intersection with the inner wall of the capillary 7.
  • a layer 8 of reflective material is disposed on the outer surface of the discharge chamber 6, so that the light is directional, and the light is greatly improved when the lamp is not used.
  • the addition of the reflective material layer 8 can avoid the addition of reflective components outside the bulb, directly reducing the production process and cost.
  • the reflective material layer 8 is located on a half surface of the outer surface of the discharge chamber 6 in the long axis direction or the short axis direction.
  • the discharge chamber 6 is made of alumina, and the chemical composition molar ratio of the reflective material layer 8 satisfies 100Al 2 O 3 +x(aSiO 2 +bB 2 O 3 +cM 1 O+dM 2 O 0.5 )+yM 3 , where 0.1 ⁇ x ⁇ 3, 0.1 ⁇ a ⁇ 6, 0.05 ⁇ b ⁇ 5, where M 1 is one of Ca, Mg, Sr, Ba or a mixture of several alkaline earth metal oxides, and 0 ⁇ c ⁇ 3; M 2 is one of Na, K, Li or a mixture of several alkali metal oxides, and 0 ⁇ d ⁇ 3.5, M 3 is Ti, Zr transition metal oxide or Eu 2 O 3 , One or a mixture of rare earth element oxides such as Y 2 O 3 , 0 ⁇ y ⁇ 6.
  • the reflective material layer 8 is sintered or coated and fixed on the outer surface of the discharge chamber 6 and has a thickness greater than or equal to 0.05 mm.
  • the outer surface of the discharge chamber 6 not provided with the reflective material layer 8 is covered with a transparent glaze layer 9 having a thickness greater than 50 nm, which effectively improves the direct transmittance of the ceramic metal halide lamp. Greatly improved lighting performance and performance.

Abstract

A ceramic metal halide lamp shell includes a discharge cavity (6) and capillaries (7) positioned on two ends of the discharge cavity (6). Wherein, the capillary (7) includes an inner tube (71) and a weld slot (72) which is connected to the inner tube (71). The inner tube (71) closes to the discharge cavity (6), and the weld slot (72) is formed on the end of the capillary. The inner diameter of the weld slot (72) is larger than that of the inner tube (71). The weld slot (72) can seal the discharge cavity (6) by a solder (73) to realize a gas-tight seal. A reflectorized material layer (8) is positioned on a part of outer surface of the discharge cavity (6), and on the other outer surface of the discharge cavity (6) where the reflectorized material layer (8) doesn't positioned is covered with a transparent glaze layer (9).

Description

一种陶瓷金卤灯泡壳Ceramic metal halide bulb shell
技术领域 Technical field
本发明属于陶瓷光源领域，尤其涉及一种陶瓷金卤灯泡壳。 The invention belongs to the field of ceramic light sources, and in particular relates to a ceramic metal halide bulb shell.
背景技术 Background technique
目前全球范围的半透明氧化铝管主要有一体化结构，两件体结构，三件体结构，甚至五件体结构，但有一点结构基本是相同的即毛细管部分都是直筒结构和放电腔的内表面基本为圆柱、椭球、球面形等二次曲面结构。 At present, the translucent alumina tubes in the world mainly have an integrated structure, a two-piece structure, a three-piece structure, or even a five-piece structure, but one structure is basically the same, that is, the capillary portion is a straight tube structure and a discharge chamber. The inner surface is basically a quadratic curved structure such as a cylinder, an ellipsoid or a spherical shape.
另外目前陶瓷金卤灯制造商采用的封接方式是将玻璃焊料和陶瓷管及电极一同加热，玻璃焊料的熔点低于陶瓷的软化点，并且在熔化后需要有很好的流动性，进而渗透到陶瓷毛细管和电极组件的间隙中，待冷却后完成陶瓷管的封接。 In addition, the current ceramic metal halide lamp manufacturer uses a sealing method that heats the glass solder together with the ceramic tube and the electrode. The melting point of the glass solder is lower than the softening point of the ceramic, and it needs to have good fluidity after melting, and then penetrates. In the gap between the ceramic capillary and the electrode assembly, the sealing of the ceramic tube is completed after cooling.
如图1所示，陶瓷金卤灯泡壳由放电腔1及设于放电腔1两端的毛细管2构成，毛细管2为直筒结构，这种结构的电极的封接是通过玻璃焊料3填充毛细管2与电极杆4的缝隙完成的，这样就需要毛细管2与电极杆4之间有较大的间隙，较大的间隙会造成卤素物进入间隙而带来损失。且现有技术在毛细管2与放电腔1交接的部分形成喇叭口结构5，这种结构容易形成冷点，在该处容易发生金卤物沉积，使卤素物没有全部参与循环，并造成其对陶瓷金卤灯的侵蚀，影响成灯的工作效率和寿命。 As shown in FIG. 1, the ceramic metal halide bulb case is composed of a discharge chamber 1 and a capillary tube 2 disposed at both ends of the discharge chamber 1. The capillary tube 2 has a straight cylindrical structure. The sealing of the electrode of this structure is filled with the capillary 2 by the glass solder 3. The gap of the electrode rod 4 is completed, so that there is a large gap between the capillary tube 2 and the electrode rod 4, and a large gap causes a loss of the halogen into the gap. Moreover, in the prior art, the bell mouth structure 5 is formed in the portion where the capillary tube 2 and the discharge chamber 1 are overlapped, and the structure is easy to form a cold spot, where gold halide deposition is likely to occur, so that the halogen does not all participate in the cycle, and causes the pair thereof. The erosion of ceramic metal halide lamps affects the working efficiency and life of the lamps.
发明内容 Summary of the invention
针对现有技术的缺点，本发明的目的是提供一种封装更为简单、密封效果更好的陶瓷金卤灯泡壳。 In view of the shortcomings of the prior art, the object of the present invention is to provide a ceramic metal halide bulb shell which is simpler in packaging and better in sealing effect.
为实现上述目的，本发明的技术方案为：一种陶瓷金卤灯泡壳，包括放电腔及设于放电腔两端的毛细管，该毛细管包括相连接的内管段及焊接槽，该内管段靠近放电腔，焊接槽位于端面处，且焊接槽的内径较内管段大，焊接槽通过填充焊料实现放电腔的气密密封。 In order to achieve the above object, the technical solution of the present invention is: a ceramic metal halide bulb shell, comprising a discharge chamber and a capillary tube disposed at two ends of the discharge chamber, the capillary tube comprising a connected inner tube portion and a welding groove, the inner tube portion being close to the discharge chamber The welding groove is located at the end surface, and the inner diameter of the welding groove is larger than the inner tube portion, and the welding groove realizes the hermetic sealing of the discharge chamber by filling the solder.
本方案中，采用在毛细管的端面处形成一焊接槽结构，将以往的封接位置由毛细管管壁转移到管口，管口的直径较大，大大方便了放焊料和完成封接。而且，焊料基本在焊接槽融化和完成封接，而不需要通过相当长的流动到毛细管管壁来完成封接，主要是毛细管的管径与电极直径相当，不存在间隙。 In the present solution, a welded groove structure is formed at the end surface of the capillary tube, and the conventional sealing position is transferred from the capillary tube wall to the nozzle opening, and the diameter of the nozzle opening is large, which greatly facilitates the soldering and the sealing. Moreover, the solder is substantially melted in the weld groove and the sealing is completed without the need to pass a relatively long flow to the capillary tube wall to complete the sealing, mainly because the diameter of the capillary tube is comparable to the diameter of the electrode, and there is no gap.
另外，本方案焊料的位置比起现有技术焊接工艺中焊料所处的位置更远离电弧高温区，毛细管的长度可以相应减小，有助于一些对泡壳尺度要求短小一点的应用。 In addition, the position of the solder of the present scheme is farther away from the arc high temperature region than the position where the solder is located in the prior art soldering process, and the length of the capillary tube can be correspondingly reduced, which contributes to some applications requiring a shorter size for the bulb.
此方案的冷端位置能有效控制靠前，由于更接近热源部分，提高了冷端温度，保证光源的工作压力。本方案去除了毛细管与放电腔交接的部分形成的喇叭口结构，避免了冷端温度过低的现象。 The cold end position of this scheme can effectively control the front, and because it is closer to the heat source part, the cold end temperature is increased and the working pressure of the light source is ensured. The program removes the bell mouth structure formed by the portion where the capillary and the discharge chamber are connected, thereby avoiding the phenomenon that the cold end temperature is too low.
毛细管为高精度、高准直、高同轴度，因此可以实现毛细管内壁与电极杆的最紧密配合，他们之间的间隙可以控制在小于5微米的精度，这样可以防止发光物质渗入毛细管中，提高了管的寿命，并且增加了制作灯过程中电极的同轴度。 Capillary is high precision, high collimation, high coaxiality, so the inner wall of the capillary can be most closely matched with the electrode rod, and the gap between them can be controlled to an accuracy of less than 5 microns, which prevents the luminescent substance from penetrating into the capillary. The life of the tube is increased and the coaxiality of the electrodes during lamp fabrication is increased.
该焊接槽呈一向外缩口结构或该焊接槽侧面上设有若干凹/凸槽结构，使焊接牢固度更高，避免了现有电极焊接焊料下垂流动、包封不完整而使成灯早期失效。 The welding groove has an outward shrinkage structure or a plurality of concave/convex groove structures on the side of the welding groove, so that the welding is more secure, and the existing electrode welding solder sagging flow is prevented, and the encapsulation is incomplete, so that the lamp is early Invalid.
该放电腔的外曲面与毛细管的连接处为光滑过渡结构，最大程度减小了应力。 The connection between the outer curved surface of the discharge chamber and the capillary is a smooth transition structure, which minimizes the stress.
该放电腔为非齐次的偶次等温曲面腔体，其为： The discharge cavity is a non-homogeneous even isothermal curved cavity, which is:
Figure PCTCN2010076577-appb-M000001
Figure PCTCN2010076577-appb-M000001
其中x、y、z代表放电腔曲面的参数变量，a、b为放电腔曲面的半长轴与半短轴，其数值由功率要求而定，而a：b≥1,c2：b＞1，cn：cn-1≥5。Where x, y, and z represent the parametric variables of the surface of the discharge cavity, and a and b are the semi-major and semi-minor axes of the surface of the discharge cavity, the values of which are determined by the power requirements, and a: b ≥ 1, c 2 : b > 1, c n : c n-1 ≥ 5.
这样的曲面保证了泡壳内部性质的均匀性和一 致性，最合理地减少泡壳的结构应力。腔体设计不同于被采用的圆柱，球体或纯粹的椭球型。腔体的内表面设计为最接近泡壳工作的等温面。由于温度遵从二次微分方程，同时考虑到电极是线性分布的，实际的等温面是含二次项的非齐次的四次曲面，即由于线性电弧分布修正的等温曲面。这样的曲面设计可以使得泡壳的温度梯度最小，承受压力能力最大，有助于提高灯的光效，显色性和寿命。 Such a curved surface guarantees the uniformity of the internal properties of the bulb and a It is the most reasonable to reduce the structural stress of the bulb. The cavity design is different from the cylindrical, spherical or pure ellipsoid type used. The inner surface of the cavity is designed to be the isothermal surface closest to the operation of the blister. Since the temperature follows the quadratic differential equation, and considering that the electrodes are linearly distributed, the actual isothermal surface is a non-homogeneous quadratic surface with quadratic terms, ie an isothermal surface corrected by a linear arc distribution. Such a curved surface design can minimize the temperature gradient of the bulb and maximize the pressure resistance, which helps to improve the light efficiency, color rendering and life of the lamp.
进一步地，放电腔曲面的半长轴范围为2mm＜a＜10mm，该放电腔的等温曲面由放电腔内壁延伸至与毛细管内壁交接处。 Further, the semi-major axis of the curved surface of the discharge chamber ranges from 2 mm<a<10 mm, and the isothermal curved surface of the discharge chamber extends from the inner wall of the discharge chamber to the intersection with the inner wall of the capillary.
该放电腔部分外表面上设有一层反光材料层，使发光具有方向性，成灯在不使用反光罩时，大大提高了光效。另外，增加反光材料层有效减少在泡壳外另设反光部件，直接减少生产工艺和成本。 The outer surface of the discharge chamber is provided with a layer of reflective material to make the light have directivity, and the light is greatly improved when the lamp is not used. In addition, the addition of the reflective material layer effectively reduces the need for additional reflective components outside the bulb, directly reducing the production process and cost.
进一步地，该反光材料层位于放电腔外表面沿长轴方向或短轴方向的半面上。 Further, the layer of the reflective material is located on a half surface of the outer surface of the discharge chamber along the long axis direction or the short axis direction.
进一步地，该放电腔由氧化铝制得，该反光材料层的化学组成摩尔比满足100Al2O3+x（aSiO2+bB2O3+cM1O+dM 2O0.5）+yM3,式中0.1≤x≤3,0.1≤a≤6,0.05≤b≤5,式中M1是Ca、Mg、Sr、Ba其中的一种或几种碱土金属氧化物的混合物，且0≤c≤3；M2是Na、K、Li当中的一种或几种碱金属氧化物的混合物，且0≤d≤3.5,M3是Ti、Zr过渡金属氧化物或Eu2O3、Y2O3等稀土元素氧化物当中的一种或几种混合物，0≤y≤6。Further, the discharge chamber is made of alumina, and the chemical composition molar ratio of the reflective material layer satisfies 100Al 2 O 3 +x(aSiO 2 +bB 2 O 3 +cM 1 O+dM 2 O 0.5 )+yM 3 , Wherein 0.1 ≤ x ≤ 3, 0.1 ≤ a ≤ 6, 0.05 ≤ b ≤ 5, wherein M 1 is one of Ca, Mg, Sr, Ba or a mixture of several alkaline earth metal oxides, and 0 ≤ c ≤3; M 2 is one of Na, K, Li or a mixture of several alkali metal oxides, and 0 ≤ d ≤ 3.5, M 3 is Ti, Zr transition metal oxide or Eu 2 O 3 , Y 2 One or a mixture of rare earth element oxides such as O 3 , 0 ≤ y ≤ 6.
该反光材料层能够耐1450℃以上的高温，热稳定性好，其在可见光波长范围具有很高的反射率，反射率可以达到98%以上，基本对可见光零吸收。 The reflective material layer can withstand a high temperature of 1450 ° C or higher, has good thermal stability, has a high reflectance in the visible light wavelength range, and has a reflectance of 98% or more, and has substantially zero absorption of visible light.
具体地，该反光材料层烧结或涂覆固定于放电腔部分外表面上，且其厚度大于或等于0.05mm。 Specifically, the layer of the reflective material is sintered or coated and fixed on the outer surface of the discharge chamber portion, and has a thickness greater than or equal to 0.05 mm.
该反光材料层热膨胀系数与氧化铝放电腔接近，其烧结或涂覆于放电腔部分外表面上，长时间而不会出现成分变化或脱落的情况；该反光材料选择性的涂覆于泡壳外表面上使泡壳发光有方向性，可不用反光罩，从而降低了生产成本。 The reflective material layer has a thermal expansion coefficient close to that of the aluminum oxide discharge chamber, and is sintered or coated on the outer surface of the discharge chamber portion for a long time without component change or falling off; the reflective material is selectively applied to the bulb The outer surface of the bulb causes the bulb to be directional, and the reflector can be omitted, thereby reducing production costs.
该放电腔未设有反光材料层的外表面上覆盖有一玻璃透明釉层，其厚度大于50nm，其有效提高了陶瓷金卤灯发光的直透率，大大提高了成灯光效和性能。 The outer surface of the discharge chamber not provided with the reflective material layer is covered with a glass transparent glaze layer, the thickness of which is greater than 50 nm, which effectively improves the direct transmittance of the ceramic metal halide lamp, and greatly improves the light effect and performance.
玻璃透明釉材料热稳定性好，玻璃化转变温度Tg不低于910℃，软化点温度高于1000℃，且其膨胀系数与氧化铝放电腔接近，因此其可以安全稳定的工作于泡壳表面； The glass transparent glaze material has good thermal stability, the glass transition temperature Tg is not lower than 910 ° C, the softening point temperature is higher than 1000 ° C, and its expansion coefficient is close to that of the alumina discharge chamber, so it can work safely and stably on the surface of the bulb. ;
在氧化铝放电腔表面涂覆一层玻璃透明釉层，可以使放电腔表面更加光滑，提高氧化铝放电腔的直线透过率，其可以直接涂覆在整个放电腔的表面，也可以与高反射材料同时使用，涂覆在未有反射材料层的放电腔表面的其他部分，从而提高直线通过率。 Coating a surface of the aluminum oxide discharge chamber with a transparent glass glaze layer can make the surface of the discharge chamber smoother and improve the linear transmittance of the aluminum oxide discharge chamber, which can be directly coated on the surface of the entire discharge chamber, or can be high The reflective material is used at the same time and is applied to other portions of the surface of the discharge chamber where the layer of reflective material is not present, thereby increasing the straight-through rate.
附图说明 DRAWINGS
图1为现有技术陶瓷金卤灯泡壳的剖面结构图； 1 is a cross-sectional structural view of a prior art ceramic metal halide bulb case;
图2 为 本发明的陶瓷金卤灯泡壳的剖面结构图； Figure 2 is a cross-sectional structural view showing a ceramic metal halide bulb according to the present invention;
图3a-3e为带有各种焊接槽结构的泡壳剖面结构图； 3a-3e are cross-sectional structural views of a blister with various welded groove structures;
图4a、4b为带有 反光材料层及玻璃透明釉层的泡壳剖面结构图。 4a and 4b are cross-sectional structural views of a blister with a reflective material layer and a glass transparent glaze layer.
具体实施方式 detailed description
以下结合实施例及附图对本发明进行详细的描述。 The present invention will be described in detail below with reference to the embodiments and the accompanying drawings.
如图2所示，本发明公开了一种陶瓷金卤灯泡壳，包括放电腔6及设于放电腔6两端的毛细管7，该毛细管7包括相连接的内管段71及焊接槽72，该内管段71靠近放电腔6，焊接槽72位于端面处，且焊接槽72的内径较内管段71大，焊接槽72通过填充焊料73实现放电腔6的气密密封。本实施例中，该焊接槽72的内径尺寸为1到4毫米范围内，深度在1-4毫米，内管段内径在0.4-1.5毫米范围内。 As shown in FIG. 2, the present invention discloses a ceramic metal halide bulb shell comprising a discharge chamber 6 and a capillary tube 7 disposed at two ends of the discharge chamber 6. The capillary tube 7 includes a connected inner tube portion 71 and a soldering groove 72. The tube segment 71 is adjacent to the discharge chamber 6, the weld groove 72 is located at the end surface, and the inner diameter of the weld groove 72 is larger than that of the inner tube portion 71. The weld groove 72 is filled with the solder 73 to achieve a hermetic seal of the discharge chamber 6. In this embodiment, the weld groove 72 has an inner diameter of 1 to 4 mm, a depth of 1-4 mm, and an inner tube inner diameter of 0.4 to 1.5 mm.
本方案的冷端10能有效控制靠前，由于更接近热源部分，提高了冷端10温度，保证光 源的工作压力；可以防止发光物质渗入毛细管7中，提高了泡壳的寿命，并且增加了制作灯过程中电极的同轴度。 The cold end 10 of the scheme can effectively control the front, and the temperature of the cold end 10 is improved due to the closer proximity to the heat source portion, and the light is ensured. The working pressure of the source can prevent the luminescent substance from penetrating into the capillary 7, increasing the life of the blister and increasing the coaxiality of the electrode during the process of making the lamp.
毛细管7管径的大小根据灯的功率可任意制作，管径为高精度、高准直、高同轴度，以确保其与电极杆的紧密配合实现最小间隙，两者之间的间隙可以控制在小于5微米的精度。 The diameter of the capillary tube 7 can be arbitrarily made according to the power of the lamp. The diameter of the tube is high precision, high collimation, and high coaxiality to ensure a tight fit with the electrode rod to achieve a minimum gap. The gap between the two can be controlled. Accuracy at less than 5 microns.
如图3a至3e所示，该焊接槽72呈一向外缩口结构或该焊接槽72侧面上设有若干凹/凸槽结构，使焊接牢固度更高，避免了现有传统电极焊接焊料下垂流动，包封不完整而使成灯早期失效。 As shown in FIGS. 3a to 3e, the soldering groove 72 has an outwardly constricted structure or a plurality of concave/convex grooves on the side of the soldering groove 72, so that the welding is more secure, and the conventional soldering of the conventional electrode is prevented from sagging. Flow, incomplete encapsulation, and early failure of the lamp.
进一步地，该焊接槽72可呈圆台结构或圆锥台或球形结构。 Further, the welding groove 72 may have a truncated cone structure or a truncated cone or a spherical structure.
该放电腔6的外曲面与毛细管7的连接处为光滑过渡结构，最大程度减小了应力。 The junction of the outer curved surface of the discharge chamber 6 and the capillary 7 is a smooth transition structure, which minimizes the stress.
该放电腔6为非齐次的偶次等温曲面腔体，其具体为： The discharge chamber 6 is a non-homogeneous even isothermal curved cavity, which is specifically:
Figure PCTCN2010076577-appb-M000002
Figure PCTCN2010076577-appb-M000002
其中x、y、z代表放电腔6曲面的参数变量，a、b为放电腔6曲面的半长轴与半短轴，其数值由功率要求而定，而a：b≥1,c2：b＞1，cn：cn-1≥5。Where x, y, and z represent the parametric variables of the curved surface of the discharge chamber 6, and a and b are the semi-major and semi-minor axes of the curved surface of the discharge chamber 6, the values of which are determined by the power requirement, and a: b ≥ 1, c 2 : b>1, c n : c n-1 ≥ 5.
本实施例中，该偶次可为四次，即该非齐次的四次曲面腔体为： In this embodiment, the even time can be four times, that is, the non-homogeneous four-time curved cavity is:
Figure PCTCN2010076577-appb-M000003
Figure PCTCN2010076577-appb-M000003
其中x、y、z代表放电腔6曲面的参数变量，a、b为放电腔6曲面的半长轴与半短轴，其数值由功率要求而定，且a：b≥1, c：b＞1。 Where x, y, and z represent the parametric variables of the curved surface of the discharge chamber 6, and a and b are the semi-major and semi-minor axes of the curved surface of the discharge chamber 6, the values of which are determined by the power requirement, and a: b ≥ 1, c: b >1.
现有技术的陶瓷泡壳放电腔内表面为为圆柱、椭球、球面形等二次曲面结构，但由于电极是线性分布的，因此理想的等温面应该是含一次项的非齐次的二次曲面，而传统结构仅为二次曲面，因此该种结构存在陶瓷管内温度梯度较大，不利于提高灯的光效，显色性和寿命；而本方案的曲面 保证了泡壳内部性质的均匀性和一致性，最合理地减少泡壳的结构应力。腔体设计不同于被采用的圆柱，球体或纯粹的椭球型。腔体的内表面设计为最接近泡壳工作的等温面和等压面。由于温度遵从二次微分方程，同时考虑到电极是线性分布的，实际的等温面是含二次项的非齐次的四次曲面，即由于线性电弧分布修正的等温曲面。这样的曲面设计可以使得泡壳的温度梯度最小，承受压力能力最大，有助于提高灯的光效，显色性和寿命。 The inner surface of the prior art ceramic blister discharge cavity is a quadratic curved structure such as a cylinder, an ellipsoid or a spherical shape, but since the electrodes are linearly distributed, the ideal isothermal surface should be a non-homogeneous second with one term. The secondary surface, while the traditional structure is only a quadric surface, so the structure has a large temperature gradient inside the ceramic tube, which is not conducive to improving the light efficiency, color rendering and life of the lamp; The uniformity and consistency of the internal properties of the bulb are ensured, and the structural stress of the bulb is most rationally reduced. The cavity design is different from the cylindrical, spherical or pure ellipsoid type used. The inner surface of the cavity is designed to be the isothermal and isostatic surfaces closest to the operation of the blister. Since the temperature follows the quadratic differential equation, and considering that the electrodes are linearly distributed, the actual isothermal surface is a non-homogeneous quadratic surface with quadratic terms, ie an isothermal surface corrected by a linear arc distribution. Such a curved surface design can minimize the temperature gradient of the bulb and maximize the pressure resistance, which helps to improve the light efficiency, color rendering and life of the lamp.
进一步地，放电腔6曲面的半长轴范围为2mm＜a＜10mm，该放电腔6的等温曲面由放电腔内壁延伸至与毛细管7内壁交接处。 Further, the semi-major axis of the curved surface of the discharge chamber 6 is 2 mm < a < 10 mm, and the isothermal curved surface of the discharge chamber 6 extends from the inner wall of the discharge chamber to the intersection with the inner wall of the capillary 7.
如图4a、4b所示，该放电腔6部分外表面上设有一层反光材料层8，使发光具有方向性，成灯在不使用反光罩时，大大提高了光效。另外，增加反光材料层8能避免在泡壳外另设反光部件，直接减少生产工艺和成本。 As shown in FIG. 4a and FIG. 4b, a layer 8 of reflective material is disposed on the outer surface of the discharge chamber 6, so that the light is directional, and the light is greatly improved when the lamp is not used. In addition, the addition of the reflective material layer 8 can avoid the addition of reflective components outside the bulb, directly reducing the production process and cost.
进一步地，该反光材料层8位于放电腔6外表面沿长轴方向或短轴方向的半面上。 Further, the reflective material layer 8 is located on a half surface of the outer surface of the discharge chamber 6 in the long axis direction or the short axis direction.
进一步地，该放电腔6由氧化铝制得，该反光材料层8的化学组成摩尔比满足100Al2O3+x（aSiO2+bB2O3+cM1O+dM 2O0.5）+yM3,式中0.1≤x≤3,0.1≤a≤6,0.05≤b≤5,式中M1是Ca、Mg、Sr、Ba其中的一种或几种碱土金属氧化物的混合物，且0≤c≤3；M2是Na、K、Li当中的一种或几种碱金属氧化物的混合物，且0≤d≤3.5,M3是Ti、Zr过渡金属氧化物或Eu2O3、Y2O3等稀土元素氧化物当中的一种或几种混合物，0≤y≤6。Further, the discharge chamber 6 is made of alumina, and the chemical composition molar ratio of the reflective material layer 8 satisfies 100Al 2 O 3 +x(aSiO 2 +bB 2 O 3 +cM 1 O+dM 2 O 0.5 )+yM 3 , where 0.1≤x≤3, 0.1≤a≤6, 0.05≤b≤5, where M 1 is one of Ca, Mg, Sr, Ba or a mixture of several alkaline earth metal oxides, and 0 ≤ c ≤ 3; M 2 is one of Na, K, Li or a mixture of several alkali metal oxides, and 0 ≤ d ≤ 3.5, M 3 is Ti, Zr transition metal oxide or Eu 2 O 3 , One or a mixture of rare earth element oxides such as Y 2 O 3 , 0 ≤ y ≤ 6.
具体地，该反光材料层8烧结或涂覆固定于放电腔6部分外表面上，且其厚度大于或等于0.05mm。 Specifically, the reflective material layer 8 is sintered or coated and fixed on the outer surface of the discharge chamber 6 and has a thickness greater than or equal to 0.05 mm.
如图4a、4b所示，该放电腔6未设有反光材料层8的外表面上覆盖有一玻璃透明釉层9，其厚度大于50nm，其有效提高了陶瓷金卤灯发光的直透率，大大提高了成灯光效和性能。 As shown in FIG. 4a and FIG. 4b, the outer surface of the discharge chamber 6 not provided with the reflective material layer 8 is covered with a transparent glaze layer 9 having a thickness greater than 50 nm, which effectively improves the direct transmittance of the ceramic metal halide lamp. Greatly improved lighting performance and performance.

Claims (10)

  1. 一种陶瓷金卤灯泡壳，包括放电腔及设于放电腔两端的毛细管，其特征在于，该毛细管包括相连接的内管段及焊接槽，该内管段靠近放电腔，焊接槽位于端面处，且焊接槽的内径较内管段大，焊接槽通过填充焊料实现放电腔的气密密封。 A ceramic metal halide bulb shell comprising a discharge chamber and a capillary tube disposed at two ends of the discharge chamber, wherein the capillary tube comprises a connected inner tube portion and a welding groove, the inner tube portion is adjacent to the discharge chamber, and the welding groove is located at the end surface, and The inner diameter of the welding groove is larger than that of the inner tube portion, and the welding groove realizes the hermetic sealing of the discharge chamber by filling the solder.
  2. 根据权利要求1所述的陶瓷金卤灯泡壳，其特征在于，该焊接槽呈一向外缩口结构或该焊接槽侧面上设有若干凹/凸槽结构。The ceramic metal halide bulb according to claim 1, wherein the welding groove has an outwardly constricted structure or a plurality of concave/convex grooves are formed on the side of the welding groove.
  3. 根据权利要求1所述的陶瓷金卤灯泡壳，其特征在于，该放电腔的外曲面与毛细管的连接处为光滑过渡结构。The ceramic metal halide bulb according to claim 1, wherein the connection between the outer curved surface of the discharge chamber and the capillary is a smooth transition structure.
  4. 根据权利要求1所述的陶瓷金卤灯泡壳，其特征在于，该放电腔为非齐次的偶次等温曲面腔体，其为：The ceramic metal halide bulb according to claim 1, wherein the discharge chamber is a non-homogeneous even isothermal curved cavity, which is:
    Figure PCTCN2010076577-appb-M000004
    其中x、y、z代表放电腔曲面的参数变量，a、b为放电腔曲面的半长轴与半短轴，其数值由功率要求而定，而a：b≥1,c2：b＞1，cn：cn-1≥5。
    Figure PCTCN2010076577-appb-M000004
     Where x, y, and z represent the parametric variables of the surface of the discharge cavity, and a and b are the semi-major and semi-minor axes of the surface of the discharge cavity, the values of which are determined by the power requirements, and a: b ≥ 1, c 2 : b > 1, c n : c n-1 ≥ 5.
  5. 根据权利要求4所述的陶瓷金卤灯泡壳，其特征在于，放电腔曲面的半长轴范围为2mm＜a＜10mm，该放电腔的等温曲面由放电腔内壁延伸至与毛细管内壁交接处。The ceramic metal halide bulb according to claim 4, wherein the semi-major axis of the surface of the discharge chamber is 2 mm < a < 10 mm, and the isothermal curved surface of the discharge chamber extends from the inner wall of the discharge chamber to the intersection with the inner wall of the capillary.
  6. 根据权利要求1至5任一项所述的陶瓷金卤灯泡壳，其特征在于，该放电腔部分外表面上设有一层反光材料层。The ceramic metal halide bulb according to any one of claims 1 to 5, wherein a surface of the discharge chamber is provided with a layer of a reflective material.
  7. 根据权利要求6所述的陶瓷金卤灯泡壳，其特征在于，该反光材料层位于放电腔外表面沿长轴方向或短轴方向的半面上。The ceramic metal halide bulb according to claim 6, wherein the layer of the light-reflecting material is located on a half surface of the outer surface of the discharge chamber along a long axis direction or a short axis direction.
  8. 根据权利要求7所述的陶瓷金卤灯泡壳，其特征在于，该放电腔由氧化铝制得，该反光材料层的化学组成摩尔比满足100Al2O3+x（aSiO2+bB2O3+cM1O+dM 2O0.5）+yM3,式中0.1≤x≤3,0.1≤a≤6,0.05≤b≤5,式中M1是Ca、Mg、Sr、Ba其中的一种或几种碱土金属氧化物的混合物，且0≤c≤3；M2是Na、K、Li当中的一种或几种碱金属氧化物的混合物，且0≤d≤3.5,M3是Ti、Zr过渡金属氧化物或Eu2O3、Y2O3等稀土元素氧化物当中的一种或几种混合物，0≤y≤6。The ceramic metal halide bulb according to claim 7, wherein the discharge chamber is made of alumina, and the chemical composition molar ratio of the reflective material layer satisfies 100Al 2 O 3 +x (aSiO 2 + bB 2 O 3 +cM 1 O+dM 2 O 0.5 )+yM 3 , where 0.1≤x≤3, 0.1≤a≤6, 0.05≤b≤5, where M 1 is one of Ca, Mg, Sr, Ba Or a mixture of several alkaline earth metal oxides, and 0 ≤ c ≤ 3; M 2 is one of Na, K, Li or a mixture of several alkali metal oxides, and 0 ≤ d ≤ 3.5, M 3 is Ti , Zr transition metal oxide or one or a mixture of rare earth element oxides such as Eu 2 O 3 , Y 2 O 3 , 0 ≤ y ≤ 6.
  9. 根据权利要求8所述的陶瓷金卤灯泡壳，其特征在于，该反光材料层烧结或涂覆固定于放电腔部分外表面上，且其厚度大于或等于0.05mm。The ceramic metal halide bulb according to claim 8, wherein the reflective material layer is sintered or coated on the outer surface of the discharge chamber portion and has a thickness greater than or equal to 0.05 mm.
  10. 根据权利要求6所述的陶瓷金卤灯泡壳，其特征在于，该放电腔未设有反光材料层的外表面上覆盖有一玻璃透明釉层，其厚度大于50nm。The ceramic metal halide bulb according to claim 6, wherein the outer surface of the discharge chamber not provided with the reflective material layer is covered with a glass transparent glaze layer having a thickness greater than 50 nm.
PCT/CN2010/076577 2010-08-06 2010-09-02 Ceramic metal halide lamp shell WO2012016389A1 (en)

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