High-pressure mercury lamp

Abstract

The utility model relates to the field of lighting devices, in particular to a high-pressure mercury lamp which comprises a quartz lamp tube, an electric arc tube and a first supporting piece, and the electric arc tube and the first supporting piece are arranged in an inner cavity of the quartz lamp tube; the electric arc tube is provided with an electrode connected with a circuit; the first supporting piece is connected with the electrode and can support the electrode, so that a gap is formed between the electrode and the inner wall of the quartz lamp tube. The electrode is supported by the first supporting piece, so that a gap exists between the electrode and the quartz lamp tube, and the effects of improving heat dissipation of the electrode, reducing high-temperature fusing of the electrode and prolonging the service life of the mercury lamp are achieved.

Description

Technical Field

[0001] This application relates to the field of lighting devices, and more particularly to a high-pressure mercury lamp. Background Technology

[0002] Currently, high-pressure mercury lamps mainly consist of two parts: a fluorescent bulb and an arc tube. The arc tube is thin and short, filled with high-pressure mercury vapor, while the fluorescent bulb is located outside the arc tube.

[0003] When the power is turned on, discharge occurs between the electrodes, raising the temperature of the inner tube and causing the mercury to gradually evaporate, forming an arc discharge. Current passes through the high-pressure mercury vapor, ionizing and exciting it, resulting in light emission from collisions between electrons, atoms, and ions within the arc tube. The entire process emits intense ultraviolet light and fluorescence; the entire light source is called a composite light source. The fluorescent bulb is coated with phosphor, which supplements the insufficient red spectral lines in the high-pressure mercury lamp and improves its luminous efficacy.

[0004] The electrodes of a high-pressure mercury lamp are typically connected to the wiring via exposed molybdenum wire. To prevent leakage and arcing, a ring of ceramic is inserted around the molybdenum wire for protection. In actual use, the electrodes of the high-pressure mercury lamp are in direct contact with the equipment housing the lamp. Over time, poor heat dissipation can cause the electrodes to overheat, melt, and leak, leading to arcing. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a high-pressure mercury lamp to solve the technical problem of high-temperature melting, leakage and arcing at the electrodes of the mercury lamp due to poor heat dissipation in the prior art.

[0006] To achieve at least one of the above objectives, this application provides the following technical solution:

[0007] This application provides a high-pressure mercury lamp, including a quartz lamp tube, an arc tube, and a first support member; wherein the arc tube and the first support member are disposed in the inner cavity of the quartz lamp tube; the arc tube has electrodes for connection with a circuit; the first support member is connected to the electrodes and can support the electrodes, so that there is a gap between the electrodes and the inner wall of the quartz lamp tube.

[0008] In the above technical solution, the electrode is supported by the first support member, and the electrode is spaced apart from the inner wall of the quartz lamp tube, which improves the heat dissipation effect of the electrode. Heat is less likely to accumulate in local areas of the electrode, and the melting and leakage caused by temperature rise is less likely to occur, thus extending the service life of the mercury lamp.

[0009] In some embodiments, the electrode has a step; a first support is provided with a first hole for receiving a portion of the electrode through which it passes, and the end face of the step abuts against the first support.

[0010] In some embodiments, the first support is fixedly connected to the electrode.

[0011] In some embodiments, a pressure plate is also included, which is fixed to the first support member. The pressure plate abuts against the end face of the step facing away from the first support member to press and fix the electrode to the first support member.

[0012] In some embodiments, a second support member is further included, which is fixedly connected to the first support member. The second support member is provided with a second hole, and one end of the electrode that passes through the first hole can be inserted into the second hole.

[0013] In some embodiments, the system further includes a screw and a plurality of nuts, the screw passing through the second support member and the first support member, and the nuts connecting to the screw to press and fix the screw to the second support member and the first support member.

[0014] In some embodiments, at least three elastic members are also included, one end of which is fixedly connected to the first support member, and the other end of which abuts against the side wall of the quartz lamp tube, and the three elastic members are spaced apart circumferentially along the first support member.

[0015] In some embodiments, the elastic element includes a spring sheet and a roller; wherein one end of the spring sheet is fixed to the first support member, the other end is connected to the roller, and the roller presses against the side wall of the quartz lamp tube.

[0016] In some embodiments, the system further includes a cooling pipe and an air outlet. One end of the cooling pipe extends into the inner cavity of the quartz lamp tube to introduce protective gas into the quartz lamp tube, and the protective gas inside the quartz lamp tube is discharged from the air outlet.

[0017] In some embodiments, the quartz lamp tube is a sealed container with a transparent area; the arc tube has two electrodes, and two first supports are provided, with each of the two first supports being connected to one of the two electrodes respectively; there is a gap between the first support and the quartz lamp tube; and a plurality of ventilation holes are provided on the first support.

[0018] In the above technical solution, the screw connection between the second support and the first support allows for appropriate adjustment of the gap between the second support and the first support along the first direction, which helps to protect the flow of gas and improve the heat dissipation effect on the electrode.

[0019] In the above technical solution, by setting the roller to press against the side wall of the quartz lamp tube, it is possible to facilitate the movement of the elastic element in the first direction inside the quartz lamp tube, and to facilitate the movement of the first pole into the quartz lamp tube. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram illustrating the principle and structure of a mercury lamp in one embodiment;

[0022] Figure 2 This is a schematic diagram of the structure of the electrode on the arc tube in one embodiment;

[0023] Figure 3 This is a schematic diagram of the structure in one embodiment where the first pole is connected to the first support member;

[0024] Figure 4 This is a schematic diagram of the structure in one embodiment where the second pole is connected to the first support member.

[0025] The attached figures are labeled as follows:

[0026] 1. Quartz lamp tube; 2. Arc tube; 21. Electrode; 211. Step; 212. First section; 213. First pole; 214. Second pole; 3. First support member; 31. First hole; 32. Ventilation hole; 33. Clearance hole; 4. Pressure plate; 5. Second support member; 51. Second hole; 6. Screw; 7. Elastic member; 71. Spring; 72. Roller; 81. Cooling pipe; 82. Air outlet. Detailed Implementation

[0027] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. Through these descriptions, the features and advantages of the present application will become clearer and more apparent.

[0028] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms "comprising" and "having" and any variations thereof in the specification and the foregoing description of this application are intended to cover non-exclusive inclusion.

[0029] The term "embodiment" as used in this application means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0030] The specific term "exemplary" used in this application means "serving as an example, embodiment, or illustration." Any embodiment illustrated as "exemplary" is not necessarily to be construed as superior or better than other embodiments. Although various aspects of embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated otherwise.

[0031] In the description of this application, the technical terms "first", "second", "third", etc. are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0032] In the description of this application, the technical term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0033] In the description of this application, the technical terms "upper", "lower", "inner", "outer", "front", "back", "left", "right", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship in the working state of this application. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0034] In the description of this application, unless otherwise expressly specified and limited, the technical terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] In the description of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] The terms "parallel" and "perpendicular" used in this application can mean not only perfectly parallel and perpendicular, but also have a certain margin of error; for example, if the angle between the two is greater than or equal to 0° and less than or equal to 5°, they are considered to be parallel; if the angle between the two is greater than or equal to 85° and less than or equal to 95°, they are considered to be perpendicular.

[0037] In the description of this application, "multiple" means two or more (including two), unless otherwise expressly and specifically defined.

[0038] In the description of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, and other dimensions of various components in the embodiments of this application shown in the drawings, as well as the overall thickness, length, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0039] As part of the inventive concept of this application, before describing the embodiments of this application, it is necessary to analyze the causes of the problem of electrode overheating, melting, and short circuit in related technologies, and obtain the technical solution of the embodiments of this application through reasonable analysis.

[0040] In related technologies, high-pressure mercury lamps include a quartz arc tube, an outer bulb, a metal bracket, resistive components, and a lamp holder. The arc tube is the core component, filled with mercury and inert gas, while the outer bulb is usually coated with phosphor. During discharge, the mercury vapor pressure inside the arc tube is 2-15 atmospheres, hence the name high-pressure mercury lamp.

[0041] In the initial stage of lamp ignition, there is a low-pressure discharge of mercury vapor and hydrogen gas. At this time, the tube pressure drops very low, to about 25 volts; the discharge current is large, about 5 to 6 amperes, known as the starting current. The heat released during the low-pressure discharge raises the temperature of the tube wall, causing the mercury to gradually vaporize. The mercury vapor pressure and lamp voltage gradually increase, the arc begins to contract, and the discharge gradually transitions to a high-pressure discharge. Once all the mercury has evaporated, the tube pressure begins to stabilize, entering a stable high-pressure mercury vapor discharge phase.

[0042] To address this issue, this application provides a high-pressure mercury lamp, comprising a quartz lamp tube, an arc tube, and a first support member. The arc tube and the first support member are disposed within the inner cavity of the quartz lamp tube; the arc tube has electrodes for connection to a circuit; the first support member is connected to the electrodes and supports them, creating a gap between the electrodes and the inner wall of the quartz lamp tube, thereby solving the technical problem in the prior art where the electrodes of the arc tube contact the quartz lamp tube and generate heat during operation, leading to damage to the mercury lamp.

[0043] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings. The technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0044] For ease of explanation, a first direction is defined as the length direction of the arc tube. In the accompanying drawings, the first direction is represented as the X direction.

[0045] Reference Figures 1 to 3 A high-pressure mercury lamp includes a quartz lamp tube 1, an arc tube 2, and a first support member 3. The arc tube 2 and the first support member 3 are disposed in the inner cavity of the quartz lamp tube 1; the arc tube 2 has an electrode 21 for connection with a circuit; the first support member 3 is connected to the electrode 21 and can support the electrode 21, so that there is a gap between the electrode 21 and the inner wall of the quartz lamp tube 1.

[0046] Reference Figure 1 For example, the quartz lamp tube 1 is a closed container, the shape of which is determined as needed. In this embodiment, the quartz lamp tube 1 is a circular tube closed at both ends. One end of the circular tube is hemispherical and smoothly transitions to the sidewall of the circular tube, while the other end is sealed with a sealing flange. The quartz lamp tube 1 should have at least a portion of transparent area; in this embodiment, a glass outer shell is used, and the entire quartz lamp tube 1 is transparent. The quartz lamp tube 1 is analogous to an outer bubble shell in the prior art. In another embodiment, the quartz lamp tube 1 may be partially made of glass and partially made of ceramic.

[0047] Arc tube 2 is a component installed inside quartz lamp tube 1. Arc tube 2 has a cylindrical structure, and its length direction is parallel to that of quartz lamp tube 1. Electrodes 21 are provided at both ends of arc tube 2, and the electrodes 21 are electrically connected to the circuit. In this embodiment, electrodes 21 are molybdenum wires.

[0048] Reference Figure 3 or Figure 4 The first support member 3 is disposed inside the quartz lamp tube 1. There may be a gap or contact between the first support member 3 and the quartz lamp tube 1. The first support member 3 is connected to the electrode 21 to support the electrode 21. The connection between the first support member 3 and the electrode 21 can be a fixed connection or a movable connection. A movable connection means that the electrode 21 can move relative to the first support member 3 within a certain range. The specific connection method between the first support member 3 and the electrode 21 will be explained later. Regardless of the connection method used, there must be a gap between the electrode 21 and the inner wall of the quartz lamp tube 1.

[0049] Because the first support member 3 supports the electrode 21, there is a gap between the electrode 21 and the inner wall of the quartz lamp tube 1. Compared with the prior art where the electrode 21 is in contact with the inner wall of the quartz lamp tube 1, in this embodiment, the heat dissipation effect of the electrode 21 is improved, and the electrode 21 is less likely to accumulate heat in local areas, thus preventing melting and leakage caused by temperature rise, which helps to extend the service life of the mercury lamp.

[0050] Reference Figure 1 As an optional solution, the high-pressure mercury lamp also includes a cooling tube 81 and an air outlet 82. One end of the cooling tube 81 extends into the inner cavity of the quartz lamp tube 1 to introduce protective gas into the quartz lamp tube 1. The protective gas inside the quartz lamp tube 1 is discharged from the air outlet 82.

[0051] For example, one end of the cooling pipe 81 is connected to a tank containing protective gas, and the other end extends into the quartz lamp tube 1 along the first direction. It should be noted that the temperature of the protective gas entering the quartz lamp tube 1 is lower than the temperature inside the quartz lamp tube 1, and when the protective gas enters the quartz lamp tube 1, it can cool the electrode 21. Only one cooling pipe 81 is shown in the attached figure.

[0052] The electrode 21 near the end of the quartz lamp tube 1 through which the cooling tube 81 passes is designated as the second electrode 214, and the other electrode 21 is designated as the first electrode 213. The end of the cooling tube 81 that extends into the quartz lamp tube 1 is near the first electrode 213.

[0053] Reference Figure 3 The first support member 3 is provided with a clearance hole 33, which avoids the cooling pipe 81. One end of the cooling pipe 81 that extends into the quartz lamp tube 1 passes through the clearance hole 33 and then through the first support member 3.

[0054] Reference Figure 1 The quartz lamp tube 1 is provided with an air outlet 82, which is located at the end of the quartz lamp tube 1 near the second electrode 214. The protective gas inside the quartz lamp tube 1 is discharged from the air outlet 82.

[0055] After the protective gas enters the inner cavity of the quartz lamp tube 1 from the cooling pipe 81, it flows from the first electrode 213 to the second electrode 214 in the inner cavity of the quartz lamp tube 1 and flows out of the quartz lamp tube 1 from the air outlet 82, thereby achieving the cooling of the electrode 21.

[0056] Furthermore, multiple cooling pipes 81 are provided. The number of cooling pipes 81 is determined as needed. The more cooling pipes 81 there are, the greater the airflow velocity towards the electrode 21. The protective gas entering the quartz lamp tube 1 flows relatively dispersedly near the electrode 21, which helps to reduce the temperature of the electrode 21.

[0057] Reference Figure 3As an optional solution, the first support member 3 is provided with several ventilation holes 32.

[0058] Specifically, the arrangement of the ventilation hole 32 can be determined according to actual needs, and the shape of the ventilation hole 32 is not limited. In this embodiment, the ventilation hole 32 is circular.

[0059] The ventilation holes 32 on the first support member 3 facilitate the flow of protective gas near the electrode 21. The flowing protective gas can carry away some of the heat from the electrode 21 and cool it down. The ventilation holes 32 improve the flow of protective gas, which helps to cool the electrode 21 and reduces the risk of melting and leakage caused by the temperature rise of the electrode 21.

[0060] The following describes the connection method between the first support member 3 and the electrode 21. The following content in this application illustrates two types of connection methods.

[0061] Reference Figure 2 as well as Figure 3 As an alternative, electrode 21 has a step 211. The first support 3 is provided with a first hole 31 to accommodate a portion of electrode 21 passing through, and the end face of step 211 abuts against the first support 3.

[0062] Reference Figure 2 For example, electrode 21 is a cylindrical member arranged along a first direction, and a step 211 is provided in the middle region of electrode 21. The diameter of the step 211 is larger than the diameter of other regions of electrode 21. In this embodiment, electrode 21 includes a first segment 212, a second segment, and a third segment arranged sequentially along the first direction. The first segment 212 is connected to the circuit, and the second segment is the region with the step 211. The diameter of the second segment is larger than the diameter of the first segment 212.

[0063] Reference Figure 3 as well as Figure 4 The first support member 3 is provided with a first hole 31. The diameter of the first hole 31 is not less than the diameter of the first segment 212. In this embodiment, the diameter of the first hole 31 is greater than the diameter of the first segment 212 and less than the diameter of the step 211. A portion of the first segment 212 passes through and extends out of the first hole 31, such that the end face of the step 211 facing the first segment 212 in the first direction contacts the end face of the first support member 3.

[0064] In one embodiment, the electrode 21 is supported only by the first support member 3. When the mercury lamp is placed vertically, each of the two electrodes 21 is connected to a corresponding first support member 3. Due to the gravity of the arc tube 2, the step 211 presses against the first support member 3 located at the bottom of the two first support members 3. When the mercury lamp is placed horizontally, the electrode 21 can move within a set range between the two first support members 3 along a first direction. In this case, it can be understood that the electrode 21 is movably connected to the first support member 3. This embodiment is not shown in the accompanying drawings.

[0065] In one embodiment, electrode 21 is fixedly connected to first support member 3, and step 211 is pressed tightly against first support member 3.

[0066] Reference Figure 3 As an optional solution, the high-pressure mercury lamp also includes a pressure plate 4, which is fixed to the first support member 3. The pressure plate 4 and the end face of the step 211 facing away from the first support member 3 press against each other to press and fix the electrode 21 to the first support member 3.

[0067] For example, the pressure plate 4 is fixedly connected to the first support member 3. On the one hand, the pressure plate 4 can be directly connected to the first support member 3, such as by welding or riveting; on the other hand, the pressure plate 4 and the first support member 3 can be connected and fixed through a connector. In this embodiment, the pressure plate 4 and the first support member 3 are connected and fixed by a screw 6.

[0068] In this embodiment, the pressure plate 4 is set as a plate with a thickness along the first direction. The pressure plate 4 presses against the end face of the step 211 facing away from the first support member 3, while the other end face of the step 211 presses against the first support member 3, thereby realizing the fixed connection between the electrode 21 and the first support member 3.

[0069] The first support 3 is fixedly connected to the step 211. When the protective gas flows inside the quartz lamp tube 1, the arc tube 2 is less affected by the flow of the protective gas, which prevents the arc tube 2 from being blown or shaken, thus giving the arc tube 2 better stability and also helps to improve the life of the mercury lamp.

[0070] Reference Figure 3 As an optional solution, the high-pressure mercury lamp also includes a second support member 5, which is fixedly connected to the first support member 3. The second support member 5 is provided with a second hole 51, and the end of the electrode 21 that passes through the first hole 31 can be inserted into the second hole 51.

[0071] For example, the second support member 5 and the first support member 3 are spaced apart along the first direction, and the second support member 5 and the first support member 3 are fixedly connected. The specific fixing method can be determined as needed. A second hole 51 is provided on the second support member 5, and the diameter of the second hole 51 is equal to the diameter of the first segment 212 of the electrode 21.

[0072] When the step 211 of electrode 21 contacts the first support member 3, the first segment 212 of electrode 21 at least partially penetrates into the second hole 51. In this embodiment, the portion of the first segment 212 of electrode 21 away from the step 211 exits through the second hole 51.

[0073] By simultaneously limiting the electrode 21 through the first hole 31 and the second hole 51, the stability of the connection between the electrode 21 and the first support member 3 can be improved.

[0074] It should be noted that both the second support member 5 and the first support member 3 are provided with clearance notches to avoid the wires connected to the electrode 21, so that when the first electrode 213 passes through the first hole 31 and the second hole 51, the corresponding wires can pass through the first support member 3 and the second support member 5.

[0075] The connection method between the second support member 5 and the first support member 3 is described below.

[0076] Reference Figure 3 As an alternative, the high-pressure mercury lamp also includes a screw 6 and several nuts. The screw 6 passes through the second support member 5 and the first support member 3. The nuts are connected to the screw 6 to press and fix the screw 6 to the second support member 5 and the first support member 3.

[0077] For example, both the first support member 3 and the second support member 5 are provided with corresponding round holes. The screw 6 passes through the first support member 3 and the second support member 5. Nuts are used to fix the second support member 5 to the screw 6 and to fix the first support member 3 to the screw 6. Specifically, two nuts connected to the screw 6 are used to press against the two end faces of the second support member 5 along the first direction; two nuts connected to the screw 6 are used to press against the two end faces of the first support member 3 along the first direction.

[0078] By connecting the second support member 5 and the first support member 3 at different positions on the screw 6, the gap between the second support member 5 and the first support member 3 along the first direction can be adjusted. Appropriate adjustment of the gap between the second support member 5 and the first support member 3 along the first direction helps to protect the flow of gas between the two support members 5 and the first support member 3, thereby improving the heat dissipation effect on the electrode 21. The gap between the second support member 5 and the first support member 3 along the first direction is determined according to design requirements.

[0079] Furthermore, two screws 6 are provided, and the axes of the two screws 6 and the electrode 21 are located in the same plane. The two screws 6 are respectively connected to the first support member 3 and the second support member 5. In this embodiment, the two screws 6 are also respectively fixedly connected to both ends of the pressure plate 4 with nuts. The pressure plate 4 is provided with a clearance notch to avoid the electrode 21.

[0080] It should be noted that the end of the cooling pipe 81 that extends into the quartz lamp tube 1 is located between the second support member 5 and the first support member 3.

[0081] In another embodiment, the first support member 3 and the second support member 5 can be fixedly connected by other connecting members. For example, a connecting rod can be provided between the first support member 3 and the second support member 5. Both ends of the connecting rod are provided with threaded holes. A bolt passes through the first support member 3 and connects to the threaded hole on the connecting rod to fix the connecting rod to the first support member 3. A bolt passes through the second support member 5 and connects to the threaded hole on the connecting rod to fix the connecting rod to the second support member 5. This solution is not shown in the accompanying drawings.

[0082] It should be noted that the first support member 3 is fixed relative to the quartz lamp tube 1. The fixing method can be that the first support member 3 contacts the inner wall of the quartz lamp tube 1, or a support rod is fixed on the first support member 3 and the support rod contacts the end of the quartz lamp tube 1, or the fixing method described below.

[0083] Reference Figure 3 As an optional solution, the high-pressure mercury lamp also includes at least three elastic elements 7. One end of the elastic element 7 is fixedly connected to the first support member 3, and the other end is pressed against the side wall of the quartz lamp tube 1. The three elastic elements 7 are arranged at intervals along the circumference of the first support member 3.

[0084] For example, the high-pressure mercury lamp includes three elastic elements 7. One end of each elastic element 7 is fixedly connected to the first support member 3, and the other end abuts against the side wall of the quartz lamp tube 1. The three elastic elements 7 are spaced apart along the circumference of the first support member 3, ensuring that the three elastic elements 7 are not on the same straight line. In this embodiment, the three elastic elements 7 are equally spaced along the circumference of the first support member 3.

[0085] The three elastic members 7 press against the side wall of the quartz lamp tube 1 together to fix the first support member 3 relative to the quartz lamp tube 1. At this time, the first support member 3 can be spaced apart from the side wall of the quartz lamp tube 1.

[0086] In this embodiment, the first support member 3 is a circular member, and the circumferential direction of the first support member 3 is the circumferential direction of the circular member. In another embodiment, the first support member 3 can be a plate of other shapes, such as a square plate, in which case the circumferential direction of the first support member 3 is the direction of the outer periphery of the square plate.

[0087] In this embodiment, one end of the elastic member 7 is fixed to the second support member 5, which is fixedly connected to the first support member 3.

[0088] In another embodiment, one end of the elastic member 7 is fixedly connected to the first support member 3, and the second support member 5 may not be provided.

[0089] Reference Figure 3As an optional solution, the elastic element 7 includes a spring sheet 71 and a roller 72; wherein, one end of the spring sheet 71 is fixed to the first support member 3, and the other end is connected to the roller 72, and the roller 72 presses against the side wall of the quartz lamp tube 1.

[0090] For example, one end of the spring piece 71 is fixed to the first support member 3. Specifically, the spring piece 71 is fixedly connected to the second support member 5. The spring piece 71 is L-shaped, and one end of the spring piece 71 is fixedly connected to the second support member 5 using bolts and nuts. The other end is connected to a roller 72. The rotation axis of the roller 72 is perpendicular to the first direction. The side of the roller 72 abuts against the side wall of the quartz lamp tube 1. The roller 72 contacts the quartz lamp tube 1. When the elastic member 7 moves along the first direction, the roller 72 rotates around its own axis.

[0091] The roller 72 reduces the friction of the elastic element 7 when it moves along the first direction inside the quartz lamp tube 1, making it easier for the elastic element 7 to move along the first direction inside the quartz lamp tube 1, and making it easier for the first pole 213, which is connected to the elastic element 7 and the first support 3, to move into the bottom position inside the quartz lamp tube 1.

[0092] The pulley 72 provides support to the bottom of the quartz lamp tube 1, provides space for heat dissipation of the mercury lamp, and fixes the arc tube 2 vertically.

[0093] Furthermore, the second support member 5 is provided with a connecting hole that penetrates through the second support member 5. The connecting hole is an elongated hole with its length perpendicular to the first direction. The bolt connecting the spring piece 71 and the second support member 5 passes through the connecting hole and is connected to a nut at one end of the round hole provided on the spring piece 71.

[0094] The connection hole facilitates the adjustment of the connection position between the spring 71 and the second support 5. When the roller 72 enters the inner cavity of the quartz lamp tube 1, the spring 71 produces a corresponding elastic deformation. The connection hole can adjust the pressure between the spring 71 and the side wall of the quartz lamp tube 1.

[0095] It should be noted that the arc tube 2 has two electrodes 21, and two corresponding first support members 3 are provided. The two first support members 3 are connected to the two electrodes 21 in a one-to-one correspondence. The connection methods between the two first support members 3 and the two electrodes 21 can be the same or different.

[0096] Reference Figure 4 In this embodiment, the first pole 213 is provided with a first support member 3, a pressure plate 4, a second support member 5, and an elastic member 7. The second pole 214 is only provided with the first support member 3 and the pressure plate 4. The first support member 3 is fixedly connected to the second pole 214 through the first support member 3 and the pressure plate 4. The first support member 3 connected to the second pole 214 can contact the side wall of the quartz lamp tube 1.

[0097] In another embodiment, the first electrode 213 or the second electrode 214 can be combined with different structural forms from the above scheme. For example, the electrode 21 may only have the first support member 3; or the electrode 21 may have the first support member 3 and the pressure plate 4 for fixed connection; or the electrode 21 may have the first support member 3, the pressure plate 4 and the elastic member 7 for fixed connection; or other combinations that do not violate the scheme of this embodiment may be used.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way.

[0099] This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A high-pressure mercury lamp, characterized in that, Includes a quartz lamp tube, an arc tube, and a first support component; among which, The arc tube and the first support member are disposed in the inner cavity of the quartz lamp tube; The arc tube has electrodes for connection to a circuit; The first support member is connected to the electrode and can support the electrode, so that there is a gap between the electrode and the inner wall of the quartz lamp tube.

2. The high-pressure mercury lamp according to claim 1, characterized in that, The electrode has a step; the first support has a first hole for accommodating a portion of the electrode through which it passes, and the end face of the step abuts against the first support.

3. The high-pressure mercury lamp according to claim 2, characterized in that, The first support member is fixedly connected to the electrode.

4. The high-pressure mercury lamp according to claim 3, characterized in that, It also includes a pressure plate, which is fixed to the first support member. The pressure plate presses against the end face of the step facing away from the first support member to press and fix the electrode to the first support member.

5. The high-pressure mercury lamp according to claim 2, characterized in that, It also includes a second support member, which is fixedly connected to the first support member. The second support member has a second hole, and one end of the electrode that passes through the first hole can be inserted into the second hole.

6. The high-pressure mercury lamp according to claim 5, characterized in that, It also includes a screw and several nuts, the screw passing through the second support member and the first support member, and the nuts connected to the screw to press and fix the screw to the second support member and the first support member.

7. The high-pressure mercury lamp according to any one of claims 1 to 6, characterized in that, It also includes at least three elastic elements, one end of which is fixedly connected to the first support member, and the other end of which abuts against the side wall of the quartz lamp tube, and the three elastic elements are arranged at intervals along the circumference of the first support member.

8. The high-pressure mercury lamp according to claim 7, characterized in that, The elastic element includes a spring sheet and a roller; wherein one end of the spring sheet is fixed to the first support member, the other end is connected to the roller, and the roller presses against the side wall of the quartz lamp tube.

9. The high-pressure mercury lamp according to claim 1, characterized in that, It also includes a cooling pipe and an air outlet. One end of the cooling pipe extends into the inner cavity of the quartz lamp tube to introduce protective gas into the quartz lamp tube, and the protective gas inside the quartz lamp tube is discharged from the air outlet.

10. The high-pressure mercury lamp according to claim 1, characterized in that, The quartz lamp tube is a sealed container with a transparent area; The arc tube has two electrodes, and two first support members are provided, with each of the two first support members connected to the two electrodes in a one-to-one correspondence. There is a gap between the first support member and the quartz lamp tube; The first support member is provided with several ventilation holes.

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