WO2011153796A1 - Ceramic arc tube with isothermal structure - Google Patents
Ceramic arc tube with isothermal structure Download PDFInfo
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- WO2011153796A1 WO2011153796A1 PCT/CN2010/079361 CN2010079361W WO2011153796A1 WO 2011153796 A1 WO2011153796 A1 WO 2011153796A1 CN 2010079361 W CN2010079361 W CN 2010079361W WO 2011153796 A1 WO2011153796 A1 WO 2011153796A1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
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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
- H01J61/30—Vessels; Containers
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Abstract
A ceramic arc tube with an isothermal structure comprises a discharge vessel, electrode tubes provided in both sides of the discharge vessel, and electrode assemblies extending into the discharge vessel through the electrode tubes. The curved surface of the discharge vessel is a nonhomogeneous and even-order isothermal curved surface defined with formula (I), wherein x, y, z are the variables of the curved surface of the discharge vessel; a, b are the semi-major axis and the semi-minor axis of the curved surface of the discharge vessel, and the values of a and b are determined with power requirements, and a: b≥1, c: b>1, cn:cn-1≥5. The homogeneity and the uniformity of the interior properties of the arc tube can be ensured effectively, which contributes to improve the lighting effects, the color rendering properties and the life of the ceramic arc tube.
Description
说 明 书 Description
一种具有等温结构的陶瓷电弧管 Ceramic arc tube with isothermal structure
技术领域 Technical field
本发明涉及一种具有等温结构的陶瓷电弧管， 尤其应用于陶瓷金卤灯或 陶瓷投影灯。 The present invention relates to a ceramic arc tube having an isothermal structure, particularly for use in a ceramic metal halide lamp or a ceramic projection lamp.
背景技术 Background technique
陶瓷放电腔是陶瓷电弧管的关键部件， 陶瓷材料选用的透明陶瓷材料如 氧化铝， 氧化氮铝， 钇铝石榴石 （YAG) 等。 陶瓷电弧管的结构直接影响灯的 性能和制作工艺。 在给定灯的工作功率下， 陶瓷电弧管的形状和尺寸决定了 陶瓷管的工作温度， 而工作温度决定了发光物质的工作气压。 发光物质的工 作气压与光源的电参数， 如管电压， 和光参数， 如光效， 显色性等有直接关 电弧管的结构与电弧管承受的应力直接有关。 应力来自于两部分， 一是 在成型烧结过程中本身带来的， 减少小曲率的弧线可以帮助减少这种应力； 另一种应力是在灯工作时由于温度梯度带来的， 这就要求在设计中尽量做到 温度分布均匀。 然而现有的陶瓷电弧管均未能提出一种具有等温结构的陶瓷 电弧管。 The ceramic discharge chamber is a key component of the ceramic arc tube. The transparent ceramic materials selected for the ceramic material are alumina, aluminum oxynitride, yttrium aluminum garnet (YAG) and the like. The structure of the ceramic arc tube directly affects the performance and manufacturing process of the lamp. At the operating power of a given lamp, the shape and size of the ceramic arc tube determines the operating temperature of the ceramic tube, and the operating temperature determines the operating pressure of the luminescent material. The working gas pressure of the luminescent material and the electrical parameters of the light source, such as the tube voltage, and the optical parameters, such as light efficiency, color rendering, etc., are directly related to the structure of the arc tube and the stress on the arc tube. The stress comes from two parts. One is brought by itself during the forming and sintering process. The arc which reduces the small curvature can help reduce this stress. The other stress is caused by the temperature gradient when the lamp is working. Try to achieve a uniform temperature distribution in the design. However, existing ceramic arc tubes have failed to propose a ceramic arc tube having an isothermal structure.
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保证电弧管内部性质的 均匀性和一致性， 有助于提高其光效、 显色性和寿命的具有等温结构的陶瓷 电弧管。 In view of the disadvantages of the prior art, it is an object of the present invention to provide a ceramic arc tube having an isothermal structure which ensures uniformity and uniformity of the internal properties of the arc tube and contributes to improvement in light efficiency, color rendering and life.
为实现上述目的， 本发明的技术方案为： 一种具有等温结构的陶瓷电弧 管， 包括放电腔、 设于放电腔两边的电极管及通过电极管伸入放电腔内的电
极组件， 该放电腔为非齐次的四次等温曲面腔体。 In order to achieve the above object, the technical solution of the present invention is: a ceramic arc tube having an isothermal structure, comprising a discharge chamber, an electrode tube disposed on both sides of the discharge chamber, and an electric power extending into the discharge chamber through the electrode tube The pole assembly, the discharge chamber is a non-homogeneous four-time isothermal curved cavity.
这样的曲面保证了电弧管内部性质的均匀性和一致性， 最合理地减少电 弧管的结构应力。 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电弧管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 使得电弧管的温度梯度最小， 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 ensures the uniformity and consistency of the internal properties of the arc tube and most rationally reduces the structural stress of the arc tube. 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 arc tube. 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. This curved surface design minimizes the temperature gradient of the arc tube and maximizes the pressure resistance, which helps to improve the light efficiency, color rendering and life of the lamp.
该非齐次的偶次曲面腔体为
The non-homogeneous even-surface cavity is
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 ^ l, c2: b〉l， cn: cn-^ 5 o 进一步地， 该非齐次的四次曲面腔体为：
Where x, y, 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 ^ l, c 2 : b〉 l, c n : c n -^ 5 o Further, the non-homogeneous quadric surface cavity is:
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 ^ l, c : b〉l。 Where 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, and the values are determined by the power requirements, and a: b ^ l, c : b>l .
等温面数学描述说明： 对于一个点热源， 其产生热的等温面是球面， 即 Isodolite mathematical description: For a point heat source, the isothermal surface that produces heat is spherical, ie
1， 其中 x、 y、 z代表放电腔曲面的参数变量， 而 a为球面
1, where x, y, z represent the parameter variables of the surface of the discharge cavity, and a is a spherical surface
的半径。 一般的陶瓷灯其热源是一对电极间的电弧和电极本身， 其热源轴向 尺寸大于横向尺寸， 所以其产生热的等温面接近椭球面， 即
l 其中 χ、 y、 z代表放电腔曲面的
参数变量， 而 a、 b 为椭球曲面的半长轴与半短轴， a: b ^ l, 即电极轴向的 尺度大于横向的尺度。 而当电极间距较大时， 即热源是比较长的线性热源时， 等温线中间一段温度变得更加平缓， 这种情况下的等温面的描述是椭球面的 修正。 考虑到热源的轴对称和中心面的镜面对称， 原来的二次方方程增加了 偶次的高次修正项， + i o 一般情况下主要是
四次方项的修正， 其中 cn : b越小， 修正越大， 即椭球中间段越 "压扁"。 所 以， 长电极距的陶瓷灯 cn : b较小， 而短极距的陶瓷灯， 如陶瓷投影灯的 cn : b较大。 The radius. The general ceramic lamp has a heat source which is an arc between a pair of electrodes and an electrode itself. The axial direction of the heat source is larger than the lateral dimension, so that the hot isothermal surface is close to the ellipsoid, that is, l where χ, y, z represent the surface of the discharge cavity The parameter variable, and a, b are the semi-major and semi-minor axes of the ellipsoidal surface, a: b ^ l, that is, the dimension of the axial direction of the electrode is larger than the lateral dimension. When the electrode spacing is large, that is, when the heat source is a relatively long linear heat source, the temperature in the middle of the isotherm becomes gentler. The description of the isothermal surface in this case is the correction of the ellipsoid. Considering the axial symmetry of the heat source and the mirror symmetry of the center plane, the original quadratic equation adds even higher-order correction terms, and + io is generally The correction of the fourth power term, where c n : b is smaller, the larger the correction, that is, the more "squashed" the middle segment of the ellipsoid. Therefore, the long-electrode ceramic lamp c n : b is small, and the short-pole ceramic lamp, such as a ceramic projection lamp, has a large c n : b.
进一步地， 放电腔曲面的半长轴范围为 2匪 <a< 10匪。 Further, the semi-major axis of the surface of the discharge chamber is 2 匪 < a < 10 匪.
该放电腔的等温曲面由放电腔内壁延伸至与电极管内壁交接处， 以去除 其他工艺让交接部分形成喇叭口结构而带来的 "冷点"。 现有技术放电腔和电 极管等壁厚， 以致于在其两者交汇处形状呈喇叭形开口， 造成冷点。 此发明 在这一点也是遵照等温面的设计， 一直延续到电; ；立 I分， 这样消除了电弧 管内壁上的冷点。 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 electrode tube to remove the "cold spot" caused by other processes to form the bell mouth structure. Prior art discharge chambers and electrode tubes have a wall thickness such that they form a flared opening at the intersection of the two, resulting in a cold spot. The invention is also designed to follow the isothermal surface and continues to electricity; the I minute is removed, which eliminates the cold spots on the inner wall of the arc tube.
该电极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。 本方案中， 采用在电极管的端面处形成一焊接槽结构， 将以往 的封接位置由电极管壁转移到管口， 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 的流动到电极管壁来完成封接。 另外， 焊料比起在现有现有技术焊接的工艺
更远离电弧高温区， 电极管的长度可以相应减小， 有助于一些对电弧管尺度 要求短小一点的应用。 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。 The electrode tube comprises a connected inner tube segment and a welding groove, the inner tube portion is 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. In this solution, a welding groove structure is formed at the end surface of the electrode tube, and the conventional sealing position is transferred from the electrode tube wall to the nozzle opening, and the diameter of the nozzle is large, which greatly facilitates the soldering and the sealing. Moreover, the solder melts and completes the sealing substantially in the weld groove without requiring a relatively long flow to the electrode tube wall to complete the sealing. In addition, the solder is compared to the prior art soldering process. Farther away from the arc high temperature zone, the length of the electrode tube can be reduced accordingly, which helps some applications that require a shorter arc tube size. 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 raised and the working pressure of the light source is ensured.
该电极组件包括依次相连接的钨芯棒、 金属陶瓷杆及引线， 该钨芯棒伸 入放电腔内， 该金属陶瓷杆位于内管段， 且金属陶瓷杆的外径与内管段的内 径相当， 引线与金属陶瓷杆末端连接并穿过焊接槽中的焊料伸出电极管外。 由于电极管内壁没有焊接的功能， 电极管和电极组件可以尽可能的减小间隙， 以阻拦汞和卤化物进入电极管间隙而带来的流失。 由于金属陶瓷杆部分主要 在内管段内， 其功能为输送电流并且有效地阻拦热量的传导。 外加一条引线， 用于与外电路相接。 该金属陶瓷杆的膨胀系数与电极管很接近， 能有效避免 由于电极管或导电杆的膨胀系数不一致， 而导致的电极管破裂或存在间隙。 较小的间隙有效地防止了发光物质如卤化物和汞进入间隙而带来的发光物质 的流失和由此引起的光效减低和光的颜色的变化。 The electrode assembly comprises a tungsten core rod, a cermet rod and a lead wire which are sequentially connected, the tungsten core rod protrudes into the discharge chamber, the cermet rod is located in the inner tube section, and the outer diameter of the cermet rod is equal to the inner diameter of the inner tube section. The leads are connected to the ends of the cermet rods and extend out of the electrode tubes through the solder in the solder bath. Since the inner wall of the electrode tube has no soldering function, the electrode tube and the electrode assembly can reduce the gap as much as possible to block the loss of mercury and halide into the gap of the electrode tube. Since the cermet rod portion is mainly in the inner tube section, its function is to carry current and effectively block the conduction of heat. A lead wire is attached to the external circuit. The expansion coefficient of the cermet rod is very close to that of the electrode tube, and the electrode tube can be prevented from being broken or gapped due to the inconsistent expansion coefficient of the electrode tube or the conductive rod. The smaller gap effectively prevents the loss of luminescent substances caused by luminescent substances such as halides and mercury entering the gap, and the resulting reduction in efficacy and color change of light.
或者， 该电极组件包括依次相连接的钨芯棒、 导电杆及导电管， 该钨芯 棒伸入放电腔内， 该导电杆位于内管段， 且导电杆的外径与内管段的内径相 当， 该导电管与导电杆末端连接并穿过焊接槽中的焊料伸出电极管外与弓 I线 相接。 Alternatively, the electrode assembly comprises a tungsten core rod, a conductive rod and a conductive tube which are sequentially connected, the tungsten core rod extends into the discharge chamber, the conductive rod is located in the inner tube section, and the outer diameter of the conductive rod is equal to the inner diameter of the inner tube section. The conductive tube is connected to the end of the conductive rod and passes through the solder in the soldering groove to protrude outside the electrode tube and is connected to the bow line I.
该金属陶瓷杆末端设有与焊接槽配合定位的凸台结构。 封接时， 将电极 组件插进电极管中， 由于凸台结构的作用， 电极组件能很好地定位在预设位 置， 插装后， 再将填料填充到焊料槽上， 此方案中， 由于焊料不是填充在电 极组件与电极管的间隙中， 能有效减少密封工艺的复杂性。 该凸台结构外侧 端面形成有若干种锥面， 使焊料更容易润湿焊接槽和电极。 The end of the cermet rod is provided with a boss structure that is matched with the welding groove. When sealing, the electrode assembly is inserted into the electrode tube. Due to the structure of the boss, the electrode assembly can be well positioned at the preset position, and after filling, the filler is filled into the solder tank. The solder is not filled in the gap between the electrode assembly and the electrode tube, and the complexity of the sealing process can be effectively reduced. The outer surface of the boss structure is formed with a plurality of tapered surfaces to make it easier for the solder to wet the solder bath and the electrodes.
进一步地， 为防止焊料老化后由焊料槽脱落， 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。 Further, in order to prevent the solder from escaping and being detached from the solder bath, the soldering groove is an outwardly constricted junction The structure or the side of the welding groove is provided with a plurality of concave/convex groove structures.
该放电腔的外曲面与电极管的连接处为光滑过渡结构， 避免锐角曲率， 以减小陶瓷电弧管的应力。 The connection between the outer curved surface of the discharge chamber and the electrode tube is a smooth transition structure, avoiding acute angular curvature to reduce the stress of the ceramic arc tube.
附图说明 DRAWINGS
图 1 为本发明具有等温结构的陶瓷电弧管的框架示意图； 1 is a schematic view of a frame of a ceramic arc tube having an isothermal structure according to the present invention;
图 2 为本发明具有等温结构的陶瓷电弧管的剖面图； 2 is a cross-sectional view of a ceramic arc tube having an isothermal structure according to the present invention;
图 3 为不带凸台结构的陶瓷电弧管的剖面图； Figure 3 is a cross-sectional view of a ceramic arc tube without a boss structure;
图 4 为凸台结构为圆台型的陶瓷电弧管的剖面图； Figure 4 is a cross-sectional view of a ceramic arc tube in which the boss structure is a truncated cone type;
图 5 为凸台结构为方形的陶瓷电弧管的剖面图； Figure 5 is a cross-sectional view of a ceramic arc tube with a square structure;
图 6 为实施例 2具有等温结构的陶瓷电弧管的剖面图； Figure 6 is a cross-sectional view of a ceramic arc tube having an isothermal structure of Embodiment 2;
图 7 为 c2 : b=l. 5时的陶瓷电弧管的管壳的结构示意图。 Figure 7 is a schematic view showing the structure of the shell of the ceramic arc tube at c 2 : b = 1.5.
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 1 所示， 本发明公开了一种具有等温结构的陶瓷电弧管， 包括放电 腔 18、 设于放电腔 18两边的电极管 15及通过电极管 15伸入放电腔 18内的 电极组件， 该放电腔 18为非齐次的偶次等温曲面腔体。 As shown in FIG. 1, the present invention discloses a ceramic arc tube having an isothermal structure, comprising a discharge chamber 18, an electrode tube 15 disposed on both sides of the discharge chamber 18, and an electrode assembly extending into the discharge chamber 18 through the electrode tube 15. The discharge chamber 18 is a non-homogeneous even isothermal curved cavity.
该非齐次的偶次曲面腔体为： The non-homogeneous even-surface cavity is:
+ 其中本实施例以四次方项的修正为
例说明，
其中 χ、 y、 z代表放电腔曲面的参数变量， 曲面中方程中的四次项使得
曲面在 y轴和 z轴方向向对称轴 x轴收缩。 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^ l, c : b〉l。 等温面的这个修正是 由于作为热源的电弧线性分布带来的修正。 其中 c参数一般大于 a和 b的数 值。 如图 7所示， 为 c2 : b= l . 5时的陶瓷电弧管的管壳的结构示意图。 + In this embodiment, the correction of the fourth power is For example, Where χ, y, z represent the parametric variables of the surface of the discharge cavity, and the fourth term in the equation in the surface makes The surface is contracted to the x-axis of the symmetry axis in the y-axis and z-axis directions. a, b is the semi-major axis and semi-minor axis of the surface of the discharge cavity, and its value is determined by the power requirement, and a : b^ l, c : b>l. This correction of the isothermal surface is due to the correction caused by the linear distribution of the arc as a heat source. Where c parameter is generally greater than the values of a and b. As shown in Fig. 7, the structure of the shell of the ceramic arc tube is c 2 : b = 1.5.
进一步地， 放电腔 18曲面的半长轴范围为 2匪 <a< 10匪。 Further, the semi-major axis of the curved surface of the discharge chamber 18 is 2 匪 < a < 10 匪.
电弧管是以一对电极组件为轴的轴对称结构， 由于热主要来自放电腔， 放电腔等温曲面的数学表达式是四次曲面， 即同时含有四次和二次项的轴对 称曲面。 The arc tube is an axisymmetric structure with a pair of electrode assemblies as the axis. Since the heat mainly comes from the discharge cavity, the mathematical expression of the isothermal surface of the discharge cavity is a quadratic surface, that is, an axis symmetry surface containing four and quadratic terms at the same time.
该放电腔 18的等温曲面由放电腔内壁延伸至与电极管内壁交接处。 如图 2至图 5所示， 该电极管 15包括相连接的内管段 19及焊接槽 13， 该内管段 19靠近放电腔 18， 焊接槽 13位于端面处， 且焊接槽 13的内径较内 管段 19大， 焊接槽 13通过填充焊料 12实现放电腔 18的气密密封。 该放电 腔 18及电极管 15采用了透明陶瓷材料。 The isothermal curved surface of the discharge chamber 18 extends from the inner wall of the discharge chamber to the intersection with the inner wall of the electrode tube. As shown in FIG. 2 to FIG. 5, the electrode tube 15 includes a connected inner tube portion 19 and a welding groove 13, the inner tube portion 19 is adjacent to the discharge chamber 18, the welding groove 13 is located at the end surface, and the inner diameter of the welding groove 13 is smaller than the inner tube portion. At 19, the solder bath 13 achieves a hermetic seal of the discharge chamber 18 by filling the solder 12. The discharge chamber 18 and the electrode tube 15 are made of a transparent ceramic material.
本方案中， 采用在电极管 15的端面处形成一焊接槽 13结构， 将以往的 封接位置由电极管壁转移到管口， 管口的直径较大， 大大方便了放焊料和完 成封接。 另外， 焊料比起在现有现有技术焊接的工艺更远离电弧高温区， 电 极管的长度可以相应减小， 有助于一些对电弧管尺度要求短小一点的应用。 此方案的冷端位置 20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。 放电腔内壁和电极管的交接处由于距离电弧和电 极头最远， 一般是放电腔内最冷的表面， 也常常被称为冷端。 In the present solution, a soldering groove 13 is formed at the end surface of the electrode tube 15, and the conventional sealing position is transferred from the electrode tube wall to the nozzle, and the diameter of the nozzle is large, which greatly facilitates soldering and sealing. . In addition, the solder is further away from the arc high temperature region than in the prior art soldering process, and the length of the electrode tube can be correspondingly reduced, contributing to some applications where the arc tube scale is required to be shorter. The cold end position 20 of this solution can effectively control the front, and because it is closer to the heat source part, the cold end temperature is increased to ensure the working pressure of the light source. The intersection of the inner wall of the discharge chamber and the electrode tube is the farthest distance from the arc and the electrode head, and is generally the coldest surface in the discharge chamber, and is often referred to as the cold end.
该电极组件包括依次相连接的钨芯棒 16、 金属陶瓷杆 14及引线 11， 该 钨芯棒 16伸入放电腔 18内， 该金属陶瓷杆 14位于内管段 19， 且金属陶瓷杆 14的外径与内管段 19的内径相当，引线 11与金属陶瓷杆 14末端连接并穿过
焊接槽 13中的焊料伸出电极管 15外。 由于电极管内 15壁没有焊接的功能， 电极管 15和电极组件可以尽可能的减小间隙， 以阻拦汞和卤化物进入电极管 15间隙而带来的流失。 电极管 15内壁可以通过研磨、 内抛光， 加上金属陶瓷 杆 14的外表面加工， 他们之间的间隙可以控制在小于 2微米的精度。 这样的 精度有利于提高陶瓷电弧管的寿命并且增加了制作灯过程中电极组件的同轴 度， 保证电弧在陶瓷电弧管的中心。 避免偏离的电弧会导致对陶瓷电弧管等 温的偏离， 甚至带来灯局部的过热而影响灯的使用效果和寿命。 The electrode assembly includes a tungsten core rod 16, a cermet rod 14 and a lead 11 connected in series, the tungsten core rod 16 extending into the discharge chamber 18, the cermet rod 14 being located in the inner tube portion 19, and outside the cermet rod 14 The diameter is equivalent to the inner diameter of the inner tube section 19, and the lead wire 11 is connected to the end of the cermet rod 14 and passes through The solder in the soldering groove 13 protrudes outside the electrode tube 15. Since the wall 15 of the electrode tube has no soldering function, the electrode tube 15 and the electrode assembly can reduce the gap as much as possible to block the loss of mercury and halide into the gap of the electrode tube 15. The inner wall of the electrode tube 15 can be polished, internally polished, and the outer surface of the cermet rod 14 is machined, and the gap between them can be controlled to an accuracy of less than 2 μm. Such precision is advantageous for increasing the life of the ceramic arc tube and increasing the coaxiality of the electrode assembly during lamp fabrication to ensure that the arc is at the center of the ceramic arc tube. Avoiding deviated arcs can cause isothermal deviations from the ceramic arc tube, and even cause local overheating of the lamp to affect the use and life of the lamp.
该金属陶瓷杆 14外加一条引线 11， 用于与外电路相接。 该金属陶瓷杆 14的膨胀系数与电极管 15很接近，能有效避免由于电极管 15或导电杆 14的 膨胀系数不一致， 而导致的电极管 15破裂或存在间隙。 The cermet rod 14 is provided with a lead 11 for connection to an external circuit. The expansion coefficient of the cermet rod 14 is close to that of the electrode tube 15, and it is possible to effectively prevent the electrode tube 15 from being broken or having a gap due to the inconsistent expansion coefficient of the electrode tube 15 or the conductive rod 14.
该金属陶瓷杆 14末端设有与焊接槽 13配合定位的凸台结构 17。封接时， 将电极组件插进电极管 15中， 由于凸台结构 17的作用， 电极组件能很好地 定位在预设位置， 插装后， 再将填料 12填充到焊料槽 13上， 引线 11再从焊 料 12中穿过。 此方案中， 由于焊料 12不是填充在电极组件与电极管 15的间 隙中， 能有效减少密封工艺的复杂性。 The end of the cermet rod 14 is provided with a boss structure 17 which is positioned in cooperation with the welding groove 13. When sealing, the electrode assembly is inserted into the electrode tube 15. Due to the action of the boss structure 17, the electrode assembly can be well positioned at the preset position, and after the insertion, the filler 12 is filled into the solder bath 13, and the lead is filled. 11 passes through the solder 12 again. In this scheme, since the solder 12 is not filled in the gap between the electrode assembly and the electrode tube 15, the complexity of the sealing process can be effectively reduced.
该凸台结构 17顶部形成有若干种锥面，使焊料更容易润湿焊接槽和电极。 该凸台结构 17可成圆台型或方形结构。 The top of the boss structure 17 is formed with a plurality of tapered faces to make it easier for the solder to wet the solder bath and the electrodes. The boss structure 17 can be in the form of a truncated cone or a square.
进一步地， 为防止焊料 12老化后由焊料槽 13脱落， 该焊接槽 13呈一向 外缩口结构， 缩口结构给焊料 12的整体结构施加一轴向的压力， 能有效防止 其脱落。 Further, in order to prevent the solder 12 from falling off after the aging of the solder 12, the soldering groove 13 has an outwardly constricted structure, and the shrinkage structure applies an axial pressure to the overall structure of the solder 12, thereby effectively preventing the solder from falling off.
进一步地， 该焊接槽 13可呈圆台结构或球形结构。 Further, the welding groove 13 may have a truncated cone structure or a spherical structure.
同样地， 该焊接槽 13侧面上也可设有若干凹 /凸槽结构， 凹槽 /凸槽结构 对焊料整体具有抓紧力， 能有效防止焊料 12老化后由焊料槽 13脱落。
进一步地， 该焊接槽 13的内径尺寸为 1到 5毫米范围内， 深度在 1到 5 毫米， 内管段 19内径在 0. 4-1. 5毫米范围内。 Similarly, a plurality of concave/convex groove structures may be disposed on the side of the welding groove 13. The groove/groove structure has a gripping force on the solder as a whole, and can effectively prevent the solder 12 from falling off after being aged by the solder groove 13. 5毫米范围内。 The inner diameter of the inner diameter of the inner tube section 19 is in the range of 0. 4-1. 5 mm.
该放电腔 18的外曲面与电极管 15的连接处 21为光滑过渡结构， 避免锐 角曲率， 以减小陶瓷电弧管的应力。 The joint 21 of the outer curved surface of the discharge chamber 18 and the electrode tube 15 is a smooth transition structure to avoid sharp angle curvature to reduce the stress of the ceramic arc tube.
实施例 2 Example 2
如图 6所示， 本实施例与实施例 1 的结构相近似， 其区别在于， 该电极组件 包括依次相连接的钨芯棒 16、 导电杆 14及导电管 22， 该钨芯棒 16伸入放电 腔 18内， 该导电杆 14位于内管段 19， 且导电杆 14的外径与内管段 19的内 径相当， 该导电管 22与导电杆 14末端连接并穿过焊接槽 13中的焊料 12伸 出电极管 15外与引线 11相接。
As shown in FIG. 6, the embodiment is similar to the structure of Embodiment 1, except that the electrode assembly includes a tungsten core rod 16, a conductive rod 14 and a conductive tube 22 which are sequentially connected, and the tungsten core rod 16 extends into the same. In the discharge chamber 18, the conductive rod 14 is located in the inner tube section 19, and the outer diameter of the conductive rod 14 is equivalent to the inner diameter of the inner tube section 19. The conductive tube 22 is connected to the end of the conductive rod 14 and extends through the solder 12 in the soldering groove 13. The outer electrode tube 15 is connected to the lead 11 outside.
Claims
权 利 要 求 书 Claims
、 一种具有等温结构的陶瓷电弧管， 包括放电腔、 设于放电腔两边的电 极管及通过电极管伸入放电腔内的电极组件， 其特征在于， 该放电腔为非齐 次的偶次等温曲面腔体。 a ceramic arc tube having an isothermal structure, comprising a discharge chamber, an electrode tube disposed on both sides of the discharge chamber, and an electrode assembly extending into the discharge chamber through the electrode tube, wherein the discharge chamber is non-homogeneous even time Isothermal curved cavity.
、 根据权利要求 所述的具有等温结构的陶瓷电弧管， 其特征在于， 该 非齐次的偶次曲面腔体为：
其中 x、 y、 z代表放电腔曲面的参数变量， a、 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 , c2 : b〉 ， cn: c 、 根据权利要求 所述的具有等温结构的陶瓷电弧管， 其特征在于， 该 非齐次的偶次曲面腔体为:A ceramic arc tube having an isothermal structure according to the present invention, wherein the non-homogeneous even-surface cavity is: Where x, y, z represent the parametric variables of the surface of the discharge cavity, a, the semi-major axis and the semi-minor axis of the surface of the discharge cavity, the value of which is determined by the power requirement, and a : b , c 2 : b〉 , c n : c. The ceramic arc tube having an isothermal structure according to the invention, wherein the non-homogeneous even-surface cavity is:
、 根据权利要求 所述的具有等温结构的陶瓷电弧管， 其特征在于， 该 放电腔的等温曲面由放电腔内壁延伸至与电极管内壁交接处。 The ceramic arc tube having an isothermal structure according to the invention is characterized in that 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 electrode tube.
、 根据权利要求 所述的具有等温结构的陶瓷电弧管， 其特征在于， 该 电极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
7、 根据权利要求 6所述的具有等温结构的陶瓷电弧管， 其特征在于， 该 电极组件包括依次相连接的钨芯棒、 金属陶瓷杆及引线， 该钨芯棒伸入放电 腔内， 该金属陶瓷杆位于内管段， 且金属陶瓷杆的外径与内管段的内径相当， 引线与导电杆末端连接并穿过焊接槽中的焊料伸出电极管外。 The ceramic arc tube with an isothermal structure according to claim, wherein the electrode tube comprises a connected inner tube segment and a welding groove, the inner tube portion is adjacent to the discharge chamber, the welding groove is located at the end surface, and the inner diameter of the welding groove Larger than the inner tube section, the soldering groove is filled with solder to achieve airtightness of the discharge chamber The ceramic arc tube with an isothermal structure according to claim 6, wherein the electrode assembly comprises a tungsten core rod, a cermet rod and a lead connected in sequence, and the tungsten core rod extends into the discharge chamber, The cermet rod is located in the inner tube section, and the outer diameter of the cermet rod is equivalent to the inner diameter of the inner tube section, and the lead wire is connected to the end of the conductive rod and protrudes out of the electrode tube through the solder in the welding groove.
8、 根据权利要求 6所述的具有等温结构的陶瓷电弧管， 其特征在于， 该 电极组件包括依次相连接的钨芯棒、 导电杆及导电管， 该钨芯棒伸入放电腔 内， 该导电杆位于内管段， 且导电杆的外径与内管段的内径相当， 该导电管 与导电杆末端连接并穿过焊接槽中的焊料伸出电极管外与引线相接。 The ceramic arc tube with an isothermal structure according to claim 6, wherein the electrode assembly comprises a tungsten core rod, a conductive rod and a conductive tube connected in sequence, and the tungsten core rod extends into the discharge chamber, The conductive rod is located in the inner tube section, and the outer diameter of the conductive rod is equivalent to the inner diameter of the inner tube section. The conductive tube is connected to the end of the conductive rod and passes through the solder in the soldering groove to protrude outside the electrode tube and is in contact with the lead.
9、根据权利要求 7或 8所述的具有等温结构的陶瓷电弧管，其特征在于， 该金属陶瓷杆末端设有与焊接槽配合定位的凸台结构。 The ceramic arc tube with an isothermal structure according to claim 7 or 8, wherein the cermet rod end is provided with a boss structure which is matched with the welding groove.
10、 根据权利要求 9所述的具有等温结构的陶瓷电弧管， 其特征在于， 该凸台结构外侧端面形成有若干种锥面。
10. The ceramic arc tube having an isothermal structure according to claim 9, wherein the outer end surface of the boss structure is formed with a plurality of tapered surfaces.
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| CN201010196088.0A CN101882559B (en) | 2010-06-07 | 2010-06-07 | Ceramic electric arc tube with isothermal structure |
| CN201010196088.0 | 2010-06-07 |
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| WO2011153796A1 true WO2011153796A1 (en) | 2011-12-15 |
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| CN101882559B (en) * | 2010-06-07 | 2014-04-30 | 杨潮平 | Ceramic electric arc tube with isothermal structure |
| CN101916711B (en) * | 2010-08-06 | 2013-04-10 | 杨潮平 | Ceramic metal halide lamp shell |
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| JPH0582099A (en) * | 1991-09-25 | 1993-04-02 | Toshiba Lighting & Technol Corp | Metal halide lamp |
| JP2000058002A (en) * | 1997-07-25 | 2000-02-25 | Toshiba Lighting & Technology Corp | High pressure discharge lamp, high pressure discharge lamp device, and lighting system |
| CN1838375A (en) * | 2006-04-21 | 2006-09-27 | 广东雪莱特光电科技股份有限公司 | Arc tube for ceramic metal halide lamp |
| WO2008129466A2 (en) * | 2007-04-20 | 2008-10-30 | Koninklijke Philips Electronics N.V. | Metal halide lamp comprising a shaped ceramic discharge vessel |
| CN101882559A (en) * | 2010-06-07 | 2010-11-10 | 高鞫 | Ceramic electric arc tube with isothermal structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0128551A1 (en) * | 1983-06-09 | 1984-12-19 | GTE Products Corporation | Single ended metal halide discharge lamps and process of manufacture |
| JPS60232661A (en) * | 1984-03-27 | 1985-11-19 | ジ−・テイ−・イ−・プロダクツ・コ−ポレイシヨン | Single end low wattage number metal halide lamp |
| US4742268A (en) * | 1985-09-03 | 1988-05-03 | North American Philips Electric Co. | High color rendering calcium-containing metal halide lamp |
| US5576592A (en) * | 1995-11-28 | 1996-11-19 | Osram Sylvania Inc. | High intensity discharge lamp with substantially isothermal arc tube |
| JP3397064B2 (en) * | 1996-12-06 | 2003-04-14 | ウシオ電機株式会社 | Discharge lamp |
| CN202363411U (en) * | 2010-06-07 | 2012-08-01 | 潮州市晨悦电光源有限公司 | Ceramic electric arc tube with isothermal structure |
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2010
- 2010-06-07 CN CN201010196088.0A patent/CN101882559B/en not_active Expired - Fee Related
- 2010-12-01 WO PCT/CN2010/079361 patent/WO2011153796A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0582099A (en) * | 1991-09-25 | 1993-04-02 | Toshiba Lighting & Technol Corp | Metal halide lamp |
| JP2000058002A (en) * | 1997-07-25 | 2000-02-25 | Toshiba Lighting & Technology Corp | High pressure discharge lamp, high pressure discharge lamp device, and lighting system |
| CN1838375A (en) * | 2006-04-21 | 2006-09-27 | 广东雪莱特光电科技股份有限公司 | Arc tube for ceramic metal halide lamp |
| WO2008129466A2 (en) * | 2007-04-20 | 2008-10-30 | Koninklijke Philips Electronics N.V. | Metal halide lamp comprising a shaped ceramic discharge vessel |
| CN101882559A (en) * | 2010-06-07 | 2010-11-10 | 高鞫 | Ceramic electric arc tube with isothermal structure |
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