CN219476619U

CN219476619U - Excimer discharge lamp

Info

Publication number: CN219476619U
Application number: CN202320113959.0U
Authority: CN
Inventors: 李臻; 李佳伟
Original assignee: Langsheng Photoelectric Technology Guangdong Co ltd
Current assignee: Langsheng Photoelectric Technology Guangdong Co ltd
Priority date: 2023-01-14
Filing date: 2023-01-14
Publication date: 2023-08-04
Anticipated expiration: 2033-01-14

Abstract

The utility model relates to the technical field of lamps, and particularly discloses an excimer discharge lamp, which comprises: the lamp body is provided with an inner cylinder and an outer cylinder which are coaxially arranged, an inner electrode is arranged in the inner cylinder, a closed discharge cavity is formed between the outer cylinder and the inner cylinder, one side wall of the outer cylinder is a light-emitting surface, the other side wall of the outer cylinder, which is away from the light-emitting surface, is coated with a metal reflecting layer, the inner electrode and the metal reflecting layer form an alternating electric field through the discharge cavity to excite the inflated body to emit light, and the metal reflecting layer is used for reflecting the light to the light-emitting surface; the heat radiation structure is provided with a connecting cylinder and a plurality of layers of heat radiation fins, and is arranged on one side of the outer cylinder, which is away from the light emitting surface, and the connecting cylinder and the heat radiation fins are in heat exchange connection with the metal reflecting layer of the lamp body. According to the excimer discharge lamp, the heat exchange area between the excimer discharge lamp and air is increased through the heat dissipation fins, so that the heat dissipation efficiency of the lamp body is improved; compared with the cooling structure without a heat radiation structure, only the fan is used for cooling, so that the working temperature of the lamp tube can be greatly reduced, the luminous efficiency of the lamp tube is improved, and the service life of the lamp tube is prolonged.

Description

Excimer discharge lamp

Technical Field

The application relates to the technical field of lamps, in particular to an excimer discharge lamp.

Background

Excimer discharge lamps, also known as uv excimer lamps, are used to bombard a rare gas in a lamp tube with high pressure and high frequency outside the uv lamp tube to emit uv light of different single wavelengths. Common krypton chloride (KrCl) excimer lamps based on dielectric barrier discharge and the like, and the conventional KrCl excimer lamps generally adopt a coaxial double-layer quartz glass sleeve structure, and inner and outer electrodes are arranged on inner and outer quartz tubes to input alternating electric fields; or a flat quartz glass tube is adopted, and flat plate electrodes are arranged on two sides of the quartz tube to form equidistant electric fields. The KrCl excimer lamp forms a uniform glow discharge between the electrodes with a concomitant generation of a large amount of heat. Without any cooling measures, the wall temperature of the lamp reaches 130-185 degrees celsius and even higher as the excimer lamp power increases. Since the reaction coefficient for forming KrCl excimer is attenuated at high temperature, irradiance decreases after the excimer lamp is lighted and gradually heated, and the irradiation value at high temperature is about 60% of the initial value. Therefore, for high-power KrCl excimer lamps, how to reduce the lamp surface temperature is an important factor for improving the lamp operating efficiency.

In view of the above structural features of the excimer discharge lamp, most of the existing excimer discharge lamps can only use a fan cooling mode, and the disadvantages are low cooling efficiency, uneven cooling and discomfort caused by fan noise.

Disclosure of Invention

The aim of the embodiment of the utility model is that: provided is an excimer discharge lamp which can solve the problem of low cooling efficiency in the excimer discharge lamp in the prior art.

In order to achieve the above purpose, the present application adopts the following technical scheme:

there is provided an excimer discharge lamp comprising:

the lamp body is provided with an inner cylinder and an outer cylinder which are coaxially arranged, an inner electrode is arranged in the inner cylinder, a closed discharge cavity is formed between the outer cylinder and the inner cylinder, one side wall of the outer cylinder is a light-emitting surface, the other side wall of the outer cylinder, which is away from the light-emitting surface, is coated with a metal reflecting layer, the inner electrode and the metal reflecting layer form an alternating electric field through the discharge cavity to excite the inflated body to emit light, and the metal reflecting layer is used for reflecting light to the light-emitting surface;

the heat radiation structure is provided with a connecting cylinder and a plurality of layers of heat radiation fins, and is arranged on one side of the outer cylinder, which is away from the light emitting surface, and the connecting cylinder and the heat radiation fins are in heat exchange connection with the metal reflecting layer of the lamp body.

As a preferred solution of the excimer discharge lamp, the heat dissipation structure has a connecting tube connected to the metal reflecting layer by heat exchange, and the heat dissipation fins are uniformly connected to the connecting tube.

As a preferable scheme of the excimer discharge lamp, the heat dissipation structure is made of metal or heat conductive plastic with high heat conduction efficiency.

As a preferred embodiment of the excimer discharge lamp, further comprising:

and the heat conduction layer is arranged between the metal reflecting layer and the heat dissipation structure.

As a preferred embodiment of the excimer discharge lamp, the heat conducting layer is made of heat conducting silica gel or heat conducting silicone grease.

The beneficial effects of this application are:

the lamp body is formed by the inner cylinder and the outer cylinder which are coaxially arranged, and the inner electrode is arranged in the inner cylinder, a discharge cavity is formed between the outer cylinder and the inner cylinder, and the outer cylinder is also provided with a metal reflecting layer, so that when the inner electrode and the outer electrode are connected with a power supply, the discharge cavity forms an alternating electric field to excite the inflated body to emit light. At this time, the light-emitting surface on the side wall of the outer cylinder can emit the light emitted by the discharge cavity, and the metal reflecting layer arranged on the side wall deviating from the light-emitting surface can reflect the light to the light-emitting surface, so that the light-emitting quantity of the light-emitting surface is increased.

In addition, the heat radiation structure is further arranged on one side, deviating from the light emitting surface, of the outer barrel, wherein the heat radiation structure is provided with the connecting barrel and the multi-layer heat radiation fins, the connecting barrel and the heat radiation fins are in heat exchange connection with the metal reflecting layer, and heat generated when the metal reflecting layer is electrified can be directly conducted out through the heat radiation fins. Because the radiating fins are of a multi-layer structure, air can circulate between adjacent radiating fins, and the flowing air takes away heat emitted by the radiating fins by utilizing heat exchange between the air and the radiating fins, so that heat energy in the discharge cavity is continuously transferred to the radiating fins on the radiating structure through the metal reflecting layer, and further emitted into the atmosphere.

Compared with a radiating mode of only setting fan cooling, the excimer discharge lamp increases the heat exchange area with air through the radiating fin plate, so that the radiating efficiency of the lamp body is improved. Compared with the cooling structure without a heat radiation structure, only the fan is used for cooling, so that the working temperature of the lamp tube can be greatly reduced, the luminous efficiency of the lamp tube is improved, and the service life of the lamp tube is prolonged.

Drawings

The present application is described in further detail below with reference to the drawings and examples.

Fig. 1 is a schematic diagram of an exploded structure of an excimer discharge lamp according to an embodiment of the present application.

Fig. 2 is a schematic cross-sectional structure of an excimer discharge lamp according to an embodiment of the present application.

Fig. 3 is a schematic axial structure of an excimer discharge lamp according to another embodiment of the present application.

In the figure:

1. a lamp body; 11. an inner cylinder; 111. an inner electrode; 12. an outer cylinder; 121. a light-emitting surface; 122. a metal reflective layer;

2. a heat dissipation structure; 21. a heat radiation fin; 22. a connecting cylinder;

3. a connecting plate; 4. a set screw; 5. and a heat conducting layer.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present application more clear, the technical solutions of the embodiments of the present application are described in further detail below, and it is obvious that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

In the description of the present application, unless explicitly stated and limited otherwise, the terms "connected," "secured" and "fixed" are to be construed broadly, as for example, they may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In this application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In order to solve the problem of low cooling efficiency of the excimer discharge lamp in the prior art, as shown in fig. 1, the present embodiment provides an excimer discharge lamp, including:

the lamp body 1 is provided with an inner cylinder 11 and an outer cylinder 12 which are coaxially arranged, an inner electrode 111 is arranged in the inner cylinder 11, a closed discharge cavity is formed between the outer cylinder 12 and the inner cylinder 11, one side wall of the outer cylinder 12 is a light-emitting surface 121, the other side wall of the outer cylinder 12, which is away from the light-emitting surface 121, is coated with a metal reflecting layer 122, the inner electrode 111 and the metal reflecting layer 122 form an alternating electric field through the discharge cavity to excite the inflated body to emit light, and the metal reflecting layer 122 is used for reflecting light to the light-emitting surface 121;

the heat dissipation structure 2 is provided with a plurality of layers of heat dissipation fins 21 and a connecting cylinder 22, and is arranged on one side of the outer cylinder 12, which is away from the light emergent surface 121, and the connecting cylinder 22 is in heat exchange connection with the metal reflecting layer 122.

The lamp body 1 is formed through the inner cylinder 11 and the outer cylinder 12 which are coaxially arranged, the inner electrode 111 is arranged in the inner cylinder 11, a discharge cavity is formed between the outer cylinder 12 and the inner cylinder 11, the outer cylinder 12 is further provided with the metal reflecting layer 122, and when the inner electrode 111 and the outer electrode are connected with a power supply, the discharge cavity forms an alternating electric field to excite the inflatable body to emit light. At this time, the light-emitting surface 121 on the side wall of the outer tube 12 can emit the light emitted from the discharge cavity, and the metal reflective layer 122 disposed away from the light-emitting surface 121 can reflect the light to the light-emitting surface 121, so as to increase the light-emitting amount of the light-emitting surface 121.

In addition, the heat dissipation structure 2 is further disposed on one side of the outer barrel 12 away from the light emitting surface 121, wherein the heat dissipation structure 2 is provided with a plurality of layers of heat dissipation fins 21 and a connecting barrel 22, and the connecting barrel 22 is in heat exchange connection with the metal reflecting layer 122, so that heat generated when the metal reflecting layer 122 is electrified can be directly conducted through the heat dissipation fins 21 and the connecting barrels 22. Because the heat radiation fins 21 are of a multi-layer structure, air can circulate between adjacent heat radiation fins 21, and the heat energy emitted by the heat radiation fins 21 is taken away by the flowing air by utilizing the heat exchange between the air and the heat radiation fins 21, so that the heat energy in the discharge cavity is continuously transferred to the heat radiation fins 21 on the heat radiation structure 2 through the metal reflecting layer 122, and further emitted into the atmosphere.

Compared with a heat dissipation mode of only setting fan cooling, the excimer discharge lamp increases the heat exchange area with air through the heat dissipation fins 21, so that the heat dissipation efficiency of the lamp body 1 is improved. Compared with the cooling structure without a heat radiation structure, only the fan is used for cooling, so that the working temperature of the lamp tube can be greatly reduced, the luminous efficiency of the lamp tube is improved, and the service life of the lamp tube is prolonged.

In one embodiment, referring to fig. 1 and 2, the heat dissipating structure 2 has a connecting tube 22 connected to the metal reflective layer 122 by heat exchange, and the heat dissipating fins 21 are uniformly connected to the connecting tube 22. The plurality of heat dissipation fins 21 are fixedly connected through the connecting cylinder 22, and the connecting cylinder 22 and the metal reflecting layer 122 are bonded through heat conduction silica gel or heat conduction silicone grease, so that the connection stability between the heat dissipation structure 2 and the lamp body 1 can be improved, and meanwhile, the heat transfer stability between the heat dissipation structure and the lamp body is also improved.

Further, referring to fig. 1 and 3, the excimer discharge lamp further includes connection plates 3 disposed at both ends of the lamp body 1, the connection plates 3 connect the lamp body 1 and the heat dissipation structure 2 with fixing screws 4, so that the heat dissipation structure 2 can be prevented from being separated from the lamp body 1. When the heat radiation structure 2 needs to be detached from the lamp body 1, the connecting plate 3 is detached first, and then the heat radiation structure can be detached from the lamp body 1. On the contrary, when the heat dissipation structure 2 needs to be installed again, the connection plate 3 is installed again after the heat dissipation structure 2 and the lamp body 1 are installed.

In a preferred embodiment, the extension plane of each heat dissipation fin 21 intersects the axis of the inner electrode 111, so that each heat dissipation fin 21 is radial with respect to the inner electrode 111, which can reduce the distance between the heat dissipated on the metal reflective layer 122 and the end of the heat dissipation fin 21, and further improve the heat dissipation efficiency. Meanwhile, the distance between the adjacent radiator fins 21 can also be controlled by controlling the adjacent angle so as to control the uniform distribution of the radiator fins 21.

In particular, referring to fig. 3, each of the heat radiation fins 21 has a rectangular or circular cross section in the radial direction of the lamp body 1, so that it is easily integrally fitted into the lamp housing.

Preferably, referring to fig. 1, a heat conducting layer 5 is disposed between the metal reflecting layer 122 and the heat dissipating structure 2, and the heat conducting layer 5 can improve the heat conductivity between the metal reflecting layer 122 and the heat dissipating structure 2, so as to further improve the heat dissipating efficiency of the heat dissipating structure 2.

In a preferred embodiment, the heat conducting layer 5 is made of heat conducting silica gel or heat conducting silicone grease, and the bonding capability and heat conducting capability of the heat conducting silica gel or heat conducting silicone grease can be utilized to simultaneously meet the protection requirement and the heat dissipation requirement of the lamp body 1.

In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and the like are merely for convenience of description and to simplify the operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the application. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for providing a special meaning.

In the description herein, reference to the term "one embodiment," "an example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in the foregoing embodiments, and that the embodiments described in the foregoing embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

The technical principles of the present application are described above in connection with specific embodiments. These descriptions are provided only for the purpose of illustrating the principles of the present application and should not be construed as limiting the scope of the present application in any way. Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification without undue burden from the present disclosure.

Claims

1. An excimer discharge lamp comprising:

2. The excimer discharge lamp of claim 1, wherein the connecting tube is heat-exchanging connected to a metal reflective layer of the lamp body, and the heat sink fins are uniformly connected to the connecting tube.

3. The excimer discharge lamp of claim 2, wherein the heat sink structure is of a metal or a thermally conductive plastic.

4. An excimer discharge lamp according to any one of claims 1 to 3, further comprising:

5. The excimer discharge lamp of claim 4, wherein said thermally conductive layer is made of thermally conductive silicone gel or thermally conductive silicone grease.