Coaxial excimer lamp device

Abstract

The utility model relates to the technical field of excimer lamps, and discloses a coaxial excimer lamp device, which comprises a lamp tube, a first electrode and a second electrode, the lamp tube comprises an outer tube and an inner tube, the inner tube is coaxially arranged inside the outer tube, both ends of the inner tube are open, the top end of the inner tube and the top end of the outer tube are sealed in a fusion manner, and the first electrode and the second electrode are arranged in the outer tube. The bottom end of the inner tube and the bottom end of the outer tube are sealed in a fusion mode, a sealed cavity is formed between the outer tube and the inner tube, the sealed cavity is filled with dischargeable gas, the outer tube is sleeved with the first electrode, the inner tube is sleeved with the second electrode, the second electrode and the first electrode are oppositely arranged, and the first electrode and the second electrode are oppositely arranged. And the second electrode is connected with an electrode lead extending out of the sealed cavity. According to the utility model, the surface of an irradiated object can be comprehensively irradiated, and the creepage phenomenon can be prevented.

Description

Technical Field

[0001] This utility model relates to the field of excimer lamp technology, and in particular to a coaxial excimer lamp device. Background Technology

[0002] Excimer lamps are high-efficiency light sources based on the spontaneous emission of ultraviolet light by excimer molecules (excited-state complexes). Their core characteristic lies in generating high-energy ultraviolet radiation through excited-state transitions of specific gases (such as rare gases or halides), and they are widely used in industry, medicine, and environmental protection. Excimer lamps can achieve various surface modifications of materials through the photochemical action of high-energy ultraviolet light, such as modifying the implant surface before dental implant surgery to restore its hydrophilicity. However, because excimer lamps generally require high-voltage electricity, creepage can easily occur between the high-voltage electrode and the low-voltage electrode, surrounding objects, and the irradiated object, posing a safety hazard. Furthermore, existing excimer lamps typically irradiate only one side of an object, failing to fully irradiate the surface requiring modification. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a coaxial excimer lamp device that can comprehensively irradiate the surface of the object being irradiated and prevent creepage.

[0004] To solve the above-mentioned technical problems, this utility model provides a coaxial excimer lamp device, including a lamp tube, a first electrode, and a second electrode. The lamp tube includes an outer tube and an inner tube, with the inner tube coaxially disposed inside the outer tube. Both ends of the inner tube are open, and the top end of the inner tube is fused to the top end of the outer tube, and the bottom end of the inner tube is fused to the bottom end of the outer tube. A sealed cavity is formed between the outer tube and the inner tube, and the sealed cavity is filled with a dischargeable gas. The first electrode is sleeved on the outside of the outer tube, and the second electrode is sleeved on the outside of the inner tube. The second electrode is disposed opposite to the first electrode, and the second electrode is connected to an electrode lead extending out of the sealed cavity.

[0005] As a preferred embodiment of this utility model, the device further includes a housing and a fan. The lamp tube is installed inside the housing. The top of the housing is provided with a first through hole communicating with the inner tube. The bottom of the housing is provided with a second through hole. The fan is installed at the bottom of the housing, and the blowing end of the fan faces the second through hole.

[0006] As a preferred embodiment of this utility model, the top of the housing is provided with an upper end plate, the first through hole is provided on the upper end plate, the bottom of the housing is provided with a lower end plate, the second through hole is provided on the lower end plate, the housing is provided with a mounting seat, the mounting seat is mounted on the lower end plate, the top of the mounting seat is provided with a mounting groove that mates with the bottom of the lamp tube, and the bottom of the mounting seat is provided with a connecting hole that communicates with the mounting groove and the second through hole respectively.

[0007] As a preferred embodiment of this utility model, a heat dissipation sleeve is installed inside the housing. The heat dissipation sleeve is fitted onto the first electrode. The side of the heat dissipation sleeve is provided with a plurality of heat dissipation grooves arranged around the axis of the heat dissipation sleeve. The heat dissipation grooves penetrate the top and bottom of the heat dissipation sleeve. The upper end plate is provided with a plurality of air outlets corresponding to the heat dissipation grooves. The lower end plate is provided with a plurality of air inlet holes corresponding to the heat dissipation grooves.

[0008] As a preferred embodiment of this utility model, the bottom of the mounting groove is provided with a wiring groove, the electrode lead extends from the bottom end of the lamp tube and into the wiring groove, the electrode lead is connected to the power cord, and the power cord passes through the side of the mounting base and the side of the housing.

[0009] As a preferred embodiment of this utility model, the bottom end of the lamp tube is provided with a downwardly protruding clamping part, the clamping part is provided in the wiring groove, a conductive sheet fixedly connected to the electrode lead is fixedly provided in the clamping part, the conductive sheet is connected to a power connection line extending out of the clamping part, and the power connection line is connected to the power line.

[0010] As a preferred embodiment of this utility model, the conductive sheet is made of molybdenum.

[0011] As a preferred embodiment of this utility model, the first electrode is one of a metal block, a metal sheet, a metal mesh, and a conductive film, and the second electrode is one of a metal block, a metal sheet, a metal mesh, and a conductive film.

[0012] As a preferred embodiment of this utility model, the material of the second electrode is tungsten or molybdenum.

[0013] As a preferred embodiment of this utility model, the inner side of the outer tube is covered with a reflective film.

[0014] This utility model provides a coaxial excimer lamp device. Compared with the prior art, its advantages are as follows: In use, the first electrode is connected to a low-voltage power supply, and the second electrode is connected to a high-voltage power supply. Since the first electrode is sleeved on the outside of the outer tube and the second electrode is sleeved on the outside of the inner tube, creepage between the second electrode and the first electrode or objects around the second electrode is effectively prevented, resulting in high safety. The object to be irradiated is placed inside the inner tube. Since the first electrode and the second electrode are arranged opposite each other, after power is applied, multiple electric arcs are generated between the first electrode and the second electrode around the inner tube, so that the object to be irradiated in the inner tube is surrounded by ultraviolet light, that is, the surface of the object to be irradiated can be fully irradiated. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the connection between the lamp tube, housing, and fan of this utility model;

[0017] Figure 3 This is a structural diagram of the lamp tube installed inside the housing according to this utility model;

[0018] Figure 4 yes Figure 3 The fracture structure diagram;

[0019] Figure 5 yes Figure 3 Bottom structure diagram;

[0020] Figure 6 yes Figure 3 The structural diagram of the shell is omitted;

[0021] In the diagram, 1. Lamp tube; 11. Outer tube; 12. Inner tube; 13. Sealed cavity; 14. Clamping part; 141. Conductive sheet; 142. Power connection wire; 15. Power cord; 2. First electrode; 3. Second electrode; 31. Electrode lead; 4. Housing; 41. First through hole; 42. Second through hole; 43. Upper end plate; 431. Vent hole; 44. Lower end plate; 441. Vent hole; 45. Mounting base; 451. Mounting groove; 452. Connecting hole; 453. Wiring groove; 46. Heat dissipation sleeve; 461. Heat dissipation groove; 5. Fan. Detailed Implementation

[0022] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model 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 utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] like Figures 1-6 As shown, a coaxial excimer lamp device according to a preferred embodiment of the present invention includes a lamp tube 1, a first electrode 2, and a second electrode 3. The lamp tube 1 includes an outer tube 11 and an inner tube 12. The inner tube 12 is coaxially disposed inside the outer tube 11. Both ends of the inner tube 12 are open. The top end of the inner tube 12 is fused to the top end of the outer tube 11, and the bottom end of the inner tube 12 is fused to the bottom end of the outer tube 11. A sealed cavity 13 is formed between the outer tube 11 and the inner tube 12. The sealed cavity 13 is filled with a dischargeable gas. The first electrode 2 is sleeved on the outside of the outer tube 11, and the second electrode 3 is sleeved on the outside of the inner tube 12. The second electrode 3 is disposed opposite to the first electrode 2. The second electrode 3 is connected to an electrode lead 31 extending out of the sealed cavity 13. Generally, to ensure safety, the lead extending out of the sealed cavity 13 is covered with an insulating layer.

[0025] The working principle of this embodiment is as follows: In use, the first electrode 2 is connected to a low-voltage power supply, i.e., the first electrode 2 is a low-voltage electrode, and the second electrode 3 is connected to a high-voltage power supply through electrode lead 31, i.e., the second electrode 3 is a high-voltage electrode. Since the first electrode 2 is sleeved on the outside of the outer tube 11, and the second electrode 3 is sleeved on the outside of the inner tube 12, i.e., the first electrode 2 is located outside the sealed cavity 13, and the second electrode 3 is located inside the sealed cavity 13, this effectively prevents the second electrode 3 from crawling onto the first electrode 2 or objects around the second electrode 3. The device exhibits an electrical phenomenon with high safety. During use, the object to be irradiated is placed inside the inner tube 12. Since the first electrode 2 and the second electrode 3 are positioned opposite each other, multiple electric arcs are generated between the first electrode 2 and the second electrode 3 around the inner tube 12 after energization. This allows the object to be irradiated within the inner tube 12 to be surrounded and irradiated by ultraviolet light, meaning that the surface of the object can be fully irradiated. Meanwhile, the second electrode 3 is located outside the inner tube 12, so it does not occupy the inner space of the inner tube 12 and does not come into contact with the object being irradiated, thus preventing any impact on the object.

[0026] For example, the device also includes a housing 4 and a fan 5. The lamp tube 1 is installed inside the housing 4. The top of the housing 4 is provided with a first through hole 41 communicating with the inner tube 12, and the bottom of the housing 4 is provided with a second through hole 42. The fan 5 is installed at the bottom of the housing 4, and the blowing end of the fan 5 faces the second through hole 42. The fan 5 blows outside air to the second through hole 42. The outside air enters the inside of the inner tube 12 through the second through hole 42, flows along the inner tube 12 and is discharged from the first through hole 41 (the object being illuminated inside the inner tube 12 will not block the inner tube 12). This helps to dissipate heat inside the lamp tube 1. At the same time, the air flow can remove dust inside the inner tube 12, ensuring the cleanliness of the inside of the inner tube 12 and preventing the presence of dust from affecting the irradiation effect on the object being illuminated.

[0027] For example, the top of the housing 4 is provided with an upper end plate 43, and a first through hole 41 is provided on the upper end plate 43. The bottom of the housing 4 is provided with a lower end plate 44, and a second through hole 42 is provided on the lower end plate 44. The housing 4 is provided with a mounting seat 45, which is mounted on the lower end plate 44. The top of the mounting seat 45 is provided with a mounting groove 451 that mates with the bottom of the lamp tube 1 to achieve the positioning and installation of the lamp tube 1. The bottom of the mounting seat 45 is provided with a connecting hole 452 that communicates with the mounting groove 451 and the second through hole 42 respectively. The fan 5 blows outside air to the second through hole 42, and then enters the inner tube 12 through the connecting hole 452 and the mounting groove 451 in sequence.

[0028] For example, a heat sink 46 is installed inside the housing 4. The heat sink 46 is fitted onto the first electrode 2. The heat sink 46 has good thermal conductivity. For example, if copper is used, the heat generated when the lamp tube 1 is working will be transferred to the heat sink 46. The side of the heat sink 46 is provided with a plurality of heat sink grooves 461 arranged around the axis of the heat sink 46. The heat sink grooves 461 penetrate through the top and bottom of the heat sink 46. The upper end plate 43 is provided with a plurality of air outlet holes 431 corresponding to the heat sink grooves 461. The lower end plate 44 is provided with a plurality of air inlet holes 441 corresponding to the heat sink grooves 461. It can be understood that the fan 5 can blow outside air to the air inlet holes 441 and the connecting hole 452. That is, outside air will enter the housing 4 through the air inlet holes 441, then flow along the heat sink grooves 461, and finally be discharged from the air outlet holes 431, which helps to improve the heat dissipation efficiency of the heat sink 46.

[0029] For example, the bottom of the mounting groove 451 is provided with a wiring groove 453. The electrode lead 31 extends from the bottom end of the lamp tube 1 and enters the wiring groove 453. The electrode lead 31 is connected to the power cord 15. The power cord 15 passes through the side of the mounting base 45 and the side of the housing 4 so that the second electrode 3 can be connected to the power supply.

[0030] For example, the bottom end of the lamp tube 1 is provided with a downward protruding clamping part 14. The clamping part 14 is located in the wiring groove 453. A conductive sheet 141 fixedly connected to the electrode lead 31 is fixedly installed in the clamping part 14. Since the conductive sheet 141 is fixed in the clamping part 14, and the electrode lead 31 is fixedly connected to the conductive sheet 141 and the second electrode 3 respectively, the second electrode 3 is fixed, preventing it from loosening and displacing from the outside of the inner tube 12. The conductive sheet 141 is connected to a power connection line 142 that extends out of the clamping part 14. The power connection line 142 is connected to the power line 15. That is, the second electrode 3 is connected to the power line 15 through the electrode lead 31, the conductive sheet 141, and the power connection line 142, so as to realize the connection between the second electrode 3 and the power supply.

[0031] For example, the conductive sheet 141 is made of molybdenum, which is less likely to produce impurities after being energized. In addition, the lamp tube 1 is generally made of quartz glass, while molybdenum has a high melting point and its coefficient of expansion is close to that of quartz glass, so that the conductive sheet 141 can be clamped and fixed in the clamping part 14.

[0032] For example, the first electrode 2 can be one of a metal block, metal sheet, metal mesh, and conductive film, all of which can achieve conductive connection with the power source. The metal sheet, metal mesh, and conductive film are relatively thin, thus allowing the entire excimer lamp to maintain a small volume, making it easy to use and carry. The second electrode 3 can also be one of a metal block, metal sheet, metal mesh, and conductive film. It is understood that the second electrode 3 will not completely block ultraviolet light from irradiating the object inside the inner tube 12. If the second electrode 3 is a metal mesh, ultraviolet light can pass through the mesh. If the second electrode 3 is a metal block or metal sheet, light-transmitting holes can be opened on it. If the second electrode 3 is a conductive film, a light-transmitting conductive film can be selected.

[0033] For example, the second electrode 3 is made of tungsten or molybdenum to avoid impurities from being generated when the second electrode 3 is powered on. Similarly, the electrode lead 31 and the power connection line 142 are both made of tungsten or molybdenum.

[0034] For example, the inner side of the outer tube 11 is covered with a reflective film. The reflective film can reflect the light scattered outward by the lamp tube 1, so that the light is concentrated to illuminate the inner side of the lamp tube 1, which helps to improve the lighting efficiency.

[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A coaxial excimer lamp device, characterized in that: The device includes a lamp tube, a first electrode, and a second electrode. The lamp tube comprises an outer tube and an inner tube. The inner tube is coaxially disposed inside the outer tube and has open ends. The top end of the inner tube is fused to the top end of the outer tube, and the bottom end of the inner tube is fused to the bottom end of the outer tube. A sealed cavity is formed between the outer tube and the inner tube and is filled with a dischargeable gas. The first electrode is sleeved on the outside of the outer tube, and the second electrode is sleeved on the outside of the inner tube. The second electrode is disposed opposite to the first electrode and is connected to an electrode lead extending out of the sealed cavity. It also includes a housing and a fan. The lamp tube is installed inside the housing. The top of the housing has a first through hole communicating with the inner tube. The bottom of the housing has a second through hole. The fan is installed at the bottom of the housing, and the blowing end of the fan faces the second through hole.

2. The coaxial excimer lamp device according to claim 1, characterized in that: The top of the housing is provided with an upper end plate, and the first through hole is provided on the upper end plate. The bottom of the housing is provided with a lower end plate, and the second through hole is provided on the lower end plate. The housing is provided with a mounting base, which is mounted on the lower end plate. The top of the mounting base is provided with a mounting groove that mates with the bottom of the lamp tube, and the bottom of the mounting base is provided with a connecting hole that communicates with the mounting groove and the second through hole respectively.

3. The coaxial excimer lamp device according to claim 2, characterized in that: A heat sink is installed inside the housing and is fitted onto the first electrode. The side of the heat sink has a plurality of heat sink grooves arranged around the axis of the heat sink. The heat sink grooves penetrate the top and bottom of the heat sink. The upper end plate has a plurality of air outlets corresponding to the heat sink grooves, and the lower end plate has a plurality of air inlets corresponding to the heat sink grooves.

4. The coaxial excimer lamp device according to claim 2, characterized in that: The bottom of the mounting groove is provided with a wiring groove. The electrode lead extends from the bottom end of the lamp tube and enters the wiring groove. The electrode lead is connected to the power cord, which passes through the side of the mounting base and the side of the housing.

5. The coaxial excimer lamp device according to claim 4, characterized in that: The bottom end of the lamp tube is provided with a downward protruding clamping part, which is located in the wiring groove. A conductive sheet that is fixedly connected to the electrode lead is fixedly installed in the clamping part. The conductive sheet is connected to a power connection line that extends out of the clamping part and is connected to the power line.

6. The coaxial excimer lamp device according to claim 5, characterized in that: The conductive sheet is made of molybdenum.

7. The coaxial excimer lamp device according to claim 1, characterized in that: The first electrode is one of a metal block, a metal sheet, a metal mesh, and a conductive film, and the second electrode is one of a metal block, a metal sheet, a metal mesh, and a conductive film.

8. The coaxial excimer lamp device according to claim 1, characterized in that: The second electrode is made of tungsten or molybdenum.

9. The coaxial excimer lamp device according to claim 1, characterized in that: The inner side of the outer tube is covered with a reflective film.

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