Handheld thermal imaging device
By designing transparent cards and light guide columns in handheld thermal imaging equipment, the function of controlling the light source with a button structure is realized, and the difficulty of sealing is reduced through dispensing sealing technology, solving the problem of single functions and difficult sealing of existing equipment, and improving the functionality and user experience of the equipment.
Patent Information
- Application Number
- CN202421526740.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-29
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-29
AI Technical Summary
The key structure of existing handheld thermal imaging devices is single, and light source control cannot be achieved, and the sealing is difficult, which affects the user experience.
A handheld thermal imaging device including a housing, a transparent card and a lighting section is designed. The combination of the transparent card and the first sinking area reduces the sealing difficulty by pressing the light source of the light emitting component, the light guide column and the dispensing sealing technology.
The linkage between the button structure and the light emitting component is realized, which enhances the functionality of the equipment, reduces the difficulty of sealing, improves the feel of pressing, and ensures waterproof performance.
Smart Images

Figure CN222704174U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of thermal imaging equipment, in particular to a handheld thermal imaging equipment. Background Art
[0002] With the continuous iteration and development of infrared thermal imaging detection technology, the performance of thermal imaging equipment has been continuously improved. Combined with the development of corresponding image analysis software technology, this technology has been more and more widely used in various fields such as industrial and agricultural production and people's lives. Nowadays, infrared thermal imaging equipment is no longer limited to the large-sized pan / tilt, ball camera, gun camera and other equipment that need to be fixed and installed in the past. It also includes handheld thermal imaging telescopes, handheld thermal imaging thermometers and other handheld thermal imaging equipment for ordinary consumers. For handheld thermal imaging equipment in existing technologies:
[0003] The button structure of most existing handheld thermal imaging devices is a rubber button installed by bonding. Although it can meet the waterproof requirements, the design style is old and the function is single, which is limited to the basic function of "button". Utility Model Content
[0004] The utility model provides a handheld thermal imaging device to improve the functionality of a key structure.
[0005] In order to achieve the above-mentioned purpose, the utility model provides a handheld thermal imaging device, including a shell, a transparent card and a lighting part, one side of the end of the shell has a first sinking area, the lighting part includes a light-emitting component and a light-guiding column, the light-emitting component is fixedly arranged in the shell and corresponds to the first sinking area, the bottom wall of the first sinking area has a mounting hole for passing the light-guiding column, the outer periphery of the light-guiding column and the inner wall of the mounting hole are connected by glue dispensing sealing, one end of the light-guiding column extends to the light source of the light-emitting component, the other end of the light-guiding column is located in the first sinking area, and the transparent card blocks the opening of the first sinking area; wherein the light-emitting component includes a key component for controlling the light source, the transparent card and the bottom wall of the first sinking area are both made of deformable materials, so that the transparent card can press the first sinking area and the key component and control the light source of the light-emitting component. In this way, the function of controlling the light source by the key structure in the prior art is realized through the cooperation of the transparent card and the first sinking area, and the linkage between the key structure and the light-emitting component is realized, so as to play the role of light indication and other functions that facilitate human-computer interaction needs, and improve the functionality of the key structure of the handheld thermal imaging device.
[0006] Furthermore, one side of the end of the shell also has a second sinking area, the second sinking area is connected to the first sinking area, the sinking depth of the second sinking area is less than the sinking depth of the first sinking area, a part of the transparent card is fixedly arranged in the second sinking area, and another part of the transparent card is movably arranged in the first sinking area. Such an arrangement facilitates the installation and push-to-set of the transparent card, and is simple to assemble and easy to operate.
[0007] Furthermore, the shape of the transparent sign matches the shape of the outer periphery of the cavity after the second sinking area and the first sinking area are connected, and the outer wall of the transparent sign is sealed with the inner wall of the second sinking area and the inner wall of the first sinking area. Such an arrangement is conducive to the limited assembly of the transparent sign and ensures waterproofness.
[0008] Furthermore, the transparent sign is fixed to the bottom wall of the second sinking area by adhesive. Such arrangement is conducive to ensuring the fixing effect of the transparent sign.
[0009] Furthermore, the side wall of the first sinking area, the side wall of the second sinking area and the bottom wall of the second sinking area are made of thermoplastic engineering plastics, and the bottom wall of the first sinking area is made of TPU material. Such an arrangement is conducive to ensuring the reliability and stability of the installation of the transparent sign and the reliability of pressing.
[0010] Furthermore, a pressing transmission member is integrally arranged on the bottom wall of the first sinking area, and the pressing transmission member is arranged around the light guide column, and the bottom wall of the transparent card located in the first sinking area is pressed and matched with the top wall of the pressing transmission member. Such an arrangement is conducive to reducing the distance between the bottom wall of the transparent card and the pressed position of the first sinking area, and ensuring the reliability of pressing.
[0011] Furthermore, one side of the end of the housing also has a second sunken area for fixing the transparent card, and the bottom wall of the second sunken area is flush with the top wall of the pressure transmission member. In this way, the transparent card is supported by the pressure transmission member and the bottom wall of the second sunken area, and the reliability of the transparent card pressing the pressure transmission member is ensured.
[0012] Furthermore, a stopper structure is also provided on the side wall of the first sinking area, and the stopper structure is provided along the circumference of the first sinking area, and the top wall of the stopper structure is located below the top wall of the pressure transmission member, and the bottom wall of the transparent card located in the first sinking area is stopped and matched with the top wall of the stopper structure. In this way, the degree of downward pressing of the transparent card is limited to avoid excessive pressing.
[0013] Furthermore, the transparent sign is made of acrylic material, which is conducive to ensuring the activity characteristics of the transparent sign.
[0014] Furthermore, the light-emitting assembly further includes a circuit board and an LED lamp, the circuit board is fixedly arranged in the housing, the LED lamp is electrically connected to the circuit board, the circuit board has a first power-on end, the button has a second power-on end, and the second power-on end is detachably electrically connected to the first power-on end to turn the LED lamp on and off. This arrangement facilitates the on and off control of the LED lamp.
[0015] By applying the technical solution of the utility model, a handheld thermal imaging device is provided, comprising a shell, a transparent plate and a lighting unit, wherein one side of the end of the shell has a first sinking area, the lighting unit comprises a light-emitting component and a light-guiding column, the light-emitting component is fixedly arranged in the shell and corresponds to the first sinking area, the bottom wall of the first sinking area has a mounting hole for passing the light-guiding column, the outer periphery of the light-guiding column and the inner wall of the mounting hole are connected by glue dispensing sealing, one end of the light-guiding column extends to the light source of the light-emitting component, the other end of the light-guiding column is located in the first sinking area, and the transparent plate blocks the opening of the first sinking area; wherein the light-emitting component comprises a button component for controlling the light source, the transparent plate and the bottom wall of the first sinking area are both made of deformable material, so that the bottom wall and the button component of the first sinking area can be pressed by pressing the transparent plate to control the light source of the light-emitting component.
[0016] By adopting this solution, the function of controlling the light source of the key structure in the prior art is realized through the cooperation of the transparent plate and the first sinking area, and the linkage between the key structure and the light-emitting component is realized. The operator can control the light source of the light-emitting component by pressing the transparent plate, and conduct light through the light guide column, so that the light can be transmitted to the first sinking area and pass through the transparent plate, so as to play the role of light indication and other human-computer interaction needs, and improve the functionality of the key structure of the handheld thermal imaging device. On the other hand, the design of the key structure of the present solution is conducive to reducing the difficulty of sealing. Specifically, the position where the shell needs to be sealed in the present solution is only the gap between the mounting hole and the light guide column. The light guide column is fixed to the mounting hole by glue sealing, and the gap position is waterproofly sealed. The operation is simple and the sealing is reliable. Furthermore, compared with the rubber key structure commonly used in the prior art, the present solution is conducive to improving the pressing feel. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0018] Figure 1 A partial structural schematic diagram of a handheld thermal imaging device provided by an embodiment of the utility model is shown;
[0019] Figure 2 Shows Figure 1 Schematic diagram of the structure after the transparent sign is installed;
[0020] Figure 3 Shows Figure 2 A cross-sectional view from another perspective.
[0021] The above drawings include the following reference numerals:
[0022] 10. housing; 101. first sinking area; 102. second sinking area; 11. pressing transmission member; 12. stopper structure;
[0023] 20. Transparent cards;
[0024] 30. Lighting unit; 311. Button; 312. Circuit board; 313. LED lamp; 32. Light guide column. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0026] like Figures 1 to 3 As shown, an embodiment of the utility model provides a handheld thermal imaging device, including a shell 10, a transparent sign 20 and a lighting unit 30, one side of the end of the shell 10 has a first sinking area 101, the lighting unit 30 includes a light-emitting component and a light-guiding column 32, the light-emitting component is fixedly arranged in the shell 10 and corresponds to the first sinking area 101, the bottom wall of the first sinking area 101 has a mounting hole for passing the light-guiding column 32, the outer periphery of the light-guiding column 32 and the inner wall of the mounting hole are connected by glue dispensing sealing, one end of the light-guiding column 32 extends to the light source of the light-emitting component, the other end of the light-guiding column 32 is located in the first sinking area 101, and the transparent sign 20 blocks the opening of the first sinking area 101; wherein, the light-emitting component includes a button 311 for controlling the light source, and the transparent sign 20 and the bottom wall of the first sinking area 101 are both made of deformable material, so that the bottom wall of the first sinking area 101 and the button 311 are pressed by pressing the transparent sign 20 to control the light source of the light-emitting component.
[0027] In this embodiment, the function of controlling the light source of the key structure in the prior art is realized through the cooperation of the transparent card 20 and the first sinking area 101, and the linkage between the key structure and the light-emitting component is realized. The operator can control the light source of the light-emitting component by pressing the transparent card 20, and conduct light through the light guide column 32, so that the light can be transmitted to the first sinking area 101 and pass through the transparent card 20, so as to play the role of light indication and other human-computer interaction needs, and improve the functionality of the key structure of the handheld thermal imaging device. On the other hand, the design of the key structure of the present scheme is conducive to reducing the difficulty of sealing. Specifically, the position where the housing 10 needs to be sealed in the present scheme is only the gap between the mounting hole and the light guide column 32. The light guide column 32 is fixed to the mounting hole by glue sealing, and the waterproof sealing of the gap position is realized at the same time. The operation is simple and the sealing is reliable. Furthermore, compared with the rubber key structure commonly used in the prior art, the present scheme is conducive to improving the pressing feel.
[0028] It should be noted that the transparent sign 20 in this embodiment can be customized with various silk-screen patterns according to user needs to realize the function of a sign, and the deformable material is a flexible elastic material.
[0029] like Figure 1 and Figure 2 As shown, one side of the end of the shell 10 also has a second sinking area 102, the second sinking area 102 is connected to the first sinking area 101, the sinking depth of the second sinking area 102 is less than the sinking depth of the first sinking area 101, a part of the transparent sign 20 is fixedly arranged in the second sinking area 102, and the other part of the transparent sign 20 is movably arranged in the first sinking area 101.
[0030] In this embodiment, the transparent sign 20 includes a fixed section and a movable section connected to each other, the fixed section is fixedly arranged in the second sinking area 102, and the movable section can be pressed to be arranged in the first sinking area 101. In this way, the installation of the movable section is completed after the installation of the fixed section is completed, which is convenient for the installation and press setting of the transparent sign 20, and the assembly is simple and easy to operate.
[0031] Specifically, the shape of the transparent sign 20 is adapted to the shape of the outer periphery of the cavity after the second sinking area 102 and the first sinking area 101 are connected, and the outer wall of the transparent sign 20 is sealed with the inner wall of the second sinking area 102 and the inner wall of the first sinking area 101. This arrangement realizes the limited installation of the transparent sign 20 and ensures the reliability of the installation of the transparent sign 20. At the same time, on the basis of ensuring the activity characteristics of the active section of the transparent sign 20, the sealed installation of the transparent sign 20 in the first sinking area 101 and the second sinking area 102 is achieved to ensure the waterproof performance.
[0032] Further, the fixing section of the transparent sign 20 is fixed to the bottom wall of the second sinking area 102 by adhesive. This arrangement is convenient for fixing the transparent sign 20 as a whole, and is also conducive to ensuring the fixing effect of the fixing section of the transparent sign 20.
[0033] In this embodiment, the side walls of the first sinking area 101, the side walls of the second sinking area 102 and the bottom wall of the second sinking area 102 are made of thermoplastic engineering plastics, and the bottom wall of the first sinking area 101 is made of TPU material.
[0034] Such arrangement is conducive to ensuring the limiting effect of the side walls of the first sunken area 101 and the second sunken area 102 on the transparent sign 20 and the supporting effect of the second sunken area 102 on the transparent sign 20, preventing the transparent sign 20 from being fixedly offset, and ensuring the reliability and stability of the installation of the transparent sign 20. At the same time, it is conducive to ensuring the activity and elasticity of the bottom wall of the first sunken area 101, ensuring that it can be pressed, its pressing effect on the button member 311, and its reset effect after pressing.
[0035] The side walls of the first sinking area 101 , the side walls of the second sinking area 102 , and the bottom wall of the second sinking area 102 are made of ABS+PC material.
[0036] Preferably, in this embodiment, the pressure transmission member 11 is also a part of the outer shell 10, the material of the outer shell 10 is TPU material, and the bottom wall of the second sinking area 102, the side wall of the first sinking area 101, the side wall of the second sinking area 102 and the TPU plastic shell are integrally connected by a plastic two-color injection molding process.
[0037] like Figure 1 and Figure 3 As shown, a pressing transmission member 11 is integrally arranged on the bottom wall of the first sinking area 101, and the pressing transmission member 11 is arranged around the light guide column 32, and the bottom wall of the transparent card 20 located in the first sinking area 101 is pressed and matched with the top wall of the pressing transmission member 11. In this arrangement, the pressing transmission member 11 avoids the situation where the bottom wall of the movable section of the transparent card 20 and the pressed position of the first sinking area 101 are far apart, thereby ensuring the reliability of the pressing transmission.
[0038] The outer peripheral shape of the pressure transfer member 11 is as compatible as possible with the shape of the first sinking area 101 , and the pressure transfer member 11 at least partially extends to the central area of the first sinking area 101 to ensure its supporting effect on the movable section of the transparent sign 20 .
[0039] In this embodiment, the bottom wall of the second sinking area 102 is flush with the top wall of the pressure transfer member 11 , and the bottom wall of the second sinking area 102 and the top wall of the pressure transfer member 11 are used to support the fixed section and the movable section of the transparent sign 20 respectively.
[0040] like Figure 1 As shown, a stop structure 12 is also provided on the side wall of the first sinking area 101. The stop structure 12 is arranged along the circumference of the first sinking area 101. The top wall of the stop structure 12 is located below the top wall of the pressing transmission member 11. The bottom wall of the transparent sign 20 located in the first sinking area 101 cooperates with the top wall stop of the stop structure 12.
[0041] In this embodiment, the stop structure 12 is a rectangular strip extending along the circumference of the first sinking area 101 and arranged on the side wall of the first sinking area 101. It can limit the downward pressing degree of the movable section of the transparent sign 20 to avoid damage to the movable section structure due to excessive pressing.
[0042] Specifically, the transparent sign 20 in this embodiment is made of acrylic material. This arrangement is conducive to ensuring the movable characteristics of the transparent sign 20. At the same time, it is conducive to processing the silk-screen pattern when the transparent sign 20 is used as a sign, and the silk-screen color is clear without fading or abrasion. On the other hand, compared with the rubber button in the prior art, the transparent sign 20 made of acrylic material has a smooth surface and will not be stained with dust.
[0043] like Figure 3 As shown, the light-emitting assembly further includes a circuit board 312 and an LED lamp 313. The circuit board 312 is fixedly disposed in the housing 10. The LED lamp 313 is electrically connected to the circuit board 312. The circuit board 312 has a first power-on end. The button 311 has a second power-on end. The second power-on end is detachably electrically connected to the first power-on end to turn on and off the LED lamp 313. In this embodiment, the second power-on end contacts the first power-on end of the circuit board 312 when the button 311 is pressed, thereby realizing control of the LED lamp 313.
[0044] Optionally, the LED lamp 313 transmits light to the outside through the light guide column 32 and the acrylic transparent plate 20. Combined with the software program, various color and motion lighting effects can be achieved, thereby achieving human-computer interaction that meets the user-defined lighting indication between the device.
[0045] It can be understood that the handheld thermal imaging device also includes a thermal imaging component, which is disposed in the TPU plastic shell, and the lighting unit 30 is disposed away from the thermal imaging component.
[0046] In summary, the utility model provides a handheld thermal imaging device, the installation hole position is the only airtight leakage point, and the light guide column 32 is fixed and sealed by the glue installation, so that the light guide column 32 and the bottom wall of the first sinking area 101 form a whole. Since the bottom wall material of the first sinking area 101 is a flexible elastic material, the light guide column 32 can move synchronously with the deformation of the bottom wall of the first sinking area 101. The transparent card 20 in the utility model is sealed with the inner walls of the first sinking area 101 and the second sinking area 102. The fixed section of the transparent card 20 located on the second sinking area 102 is fixed on the bottom wall of the second sinking area 102 by glue, and the movable section of the transparent card 20 located on the first sinking area 101 is covered on the top wall of the pressing transmission member 11 and is in a pressable state. When an external force acts on the movable section, it can realize the function of pressing a button, and the light guide column 32 can guide light to the outside of the transparent card 20. At this point, the handheld thermal imaging device has a button structure with waterproof and light-guiding functions, which improves the functionality of the button structure.
[0047] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0048] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.
[0049] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.
[0050] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0051] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.
[0052] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A handheld thermal imaging device, characterized in that: The invention comprises a housing (10), a transparent sign (20) and a lighting unit (30), wherein one side of the end of the housing (10) is provided with a first sinking area (101), the lighting unit (30) comprises a light-emitting component and a light-guiding column (32), the light-emitting component is fixedly arranged in the housing (10) and corresponds to the first sinking area (101), the bottom wall of the first sinking area (101) is provided with a mounting hole for passing the light-guiding column (32), the outer periphery of the light-guiding column (32) and the inner wall of the mounting hole are connected by glue dispensing and sealing, one end of the light-guiding column (32) extends to the light source of the light-emitting component, the other end of the light-guiding column (32) is located in the first sinking area (101), and the transparent sign (20) blocks the opening of the first sinking area (101); The light-emitting component comprises a button (311) for controlling the light source, and the transparent card (20) and the bottom wall of the first sinking area (101) are both made of a deformable material, so that by pressing the transparent card (20), the bottom wall of the first sinking area (101) and the button (311) are pressed and the light source of the light-emitting component is controlled.
2. The handheld thermal imaging device according to claim 1, characterized in that: One side of the end of the shell (10) further comprises a second sinking area (102), the second sinking area (102) is connected to the first sinking area (101), the sinking depth of the second sinking area (102) is less than the sinking depth of the first sinking area (101), a part of the transparent sign (20) is fixedly arranged in the second sinking area (102), and another part of the transparent sign (20) is movably arranged in the first sinking area (101).
3. The handheld thermal imaging device according to claim 2, characterized in that: The shape of the transparent sign (20) is adapted to the shape of the outer periphery of the cavity after the second sinking area (102) and the first sinking area (101) are connected, and the outer wall of the transparent sign (20) is sealed with the inner wall of the second sinking area (102) and the inner wall of the first sinking area (101).
4. The handheld thermal imaging device according to claim 2, characterized in that: The transparent sign (20) is fixed to the bottom wall of the second sinking area (102) by means of glue.
5. The handheld thermal imaging device according to claim 2, characterized in that: The side walls of the first sinking area (101), the side walls of the second sinking area (102) and the bottom wall of the second sinking area (102) are made of thermoplastic engineering plastics, and the bottom wall of the first sinking area (101) is made of TPU material.
6. The handheld thermal imaging device according to claim 1, characterized in that: A pressure transfer component (11) is integrally arranged on the bottom wall of the first sinking area (101), and the pressure transfer component (11) is arranged around the light guide column (32). The bottom wall of the transparent sign (20) located in the first sinking area (101) is pressed and matched with the top wall of the pressure transfer component (11).
7. The handheld thermal imaging device according to claim 6, characterized in that: One side of the end of the housing (10) also has a second sinking area (102) for fixing the transparent sign (20), and the bottom wall of the second sinking area (102) is flush with the top wall of the pressure transmission member (11).
8. The handheld thermal imaging device according to claim 6, characterized in that: A stop structure (12) is also provided on the side wall of the first sinking area (101), and the stop structure (12) is arranged along the circumference of the first sinking area (101). The top wall of the stop structure (12) is located below the top wall of the pressure transmission member (11), and the bottom wall of the transparent sign (20) located in the first sinking area (101) cooperates with the top wall of the stop structure (12) to stop.
9. The handheld thermal imaging device according to claim 1, characterized in that: The transparent sign (20) is made of acrylic material.
10. The handheld thermal imaging device according to claim 1, characterized in that: The light-emitting component further comprises a circuit board (312) and an LED lamp (313); the circuit board (312) is fixedly disposed in the housing (10); the LED lamp (313) is electrically connected to the circuit board (312); the circuit board (312) has a first power-on end; the button component (311) has a second power-on end; the second power-on end is detachably electrically connected to the first power-on end to turn the LED lamp (313) on and off.