A metal halide lamp

Abstract

This utility model discloses a metal halide lamp, including a screw-type lamp head, an outer bulb shell, a light source assembly, two positioning components, and a reflective film. The screw-type lamp head is fixed to the top of the outer bulb shell and is electrically connected to the light source assembly. The top and bottom ends of the light source assembly are respectively connected to the inner wall of the outer bulb shell through the two positioning components. Taking the lateral placement direction of the light source assembly as the X-axis and the plane containing the X-axis as the horizontal plane, the outer bulb shell has a first surface and a second surface opposite to each other along the X-axis direction. The reflective film is coated on the first surface or the second surface, and the coating area of ​​the reflective film is located above a vertical plane perpendicular to the horizontal plane. The metal halide lamp disclosed in this application solves the problem of light waste caused by the 360° emission of existing metal halide lamps. By reflecting light from ineffective directions to the working direction through the reflective film, the light utilization rate is improved. Furthermore, by blocking light from one side, strong light is prevented from directly shining into the eyes of fishermen, reducing the risk of falling into the sea.

Description

Technical Field

[0001] This utility model relates to the field of lighting fixtures, and in particular to a metal halide lamp. Background Technology

[0002] Metal halide lamps, as the third generation of light sources, are lighting fixtures made by adding metal halides to high-pressure mercury lamps. They are powered by AC power and emit light through arc discharge in a mixture of mercury and rare metal halide vapors. Metal halide lamps have advantages such as high luminous efficiency, good color rendering, long service life, relatively affordable price, and relatively light weight, so they are widely used in fishing boats engaged in light fishing operations. On fishing boats, metal halide lamps are usually arranged in a multi-layered matrix on both sides of the hull to illuminate the sea surface, thereby attracting phototactic fish and achieving the goal of fishing.

[0003] However, existing metal halide lamps are 360° light sources, and their outer shells are made of transparent high borosilicate glass, which has some obvious drawbacks in the context of fishing boat operations:

[0004] Given that metal halide lamps emit light in a 360° arc, their intense light will directly shine into the eyes of fishermen. During long-term operations, fishermen's eyes are constantly stimulated by the intense light, which can easily lead to eye diseases such as keratitis and conjunctivitis. Furthermore, the intense light may also cause fishermen to experience "flash blindness," making it impossible for them to clearly discern the actual conditions of the deck, thereby increasing the risk of stepping into the air, colliding, or even falling into the sea.

[0005] Secondly, metal halide lamps emit light in 360°, but the light rays directed towards the inside of the hull and the sky above cannot be effectively utilized, resulting in a waste of effective luminous flux. This waste of luminous flux directly leads to a reduction in lighting distance and intensity, which limits the range and depth at which fish are attracted, thus adversely affecting the fishing results.

[0006] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0007] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a metal halide lamp that can block light from one side, avoid strong light shining directly into the eyes of fishermen, and reduce the risk of falling into the sea.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A metal halide lamp includes a screw-type lamp holder, an outer bulb, a light source assembly, two positioning components, and a reflective film. The screw-type lamp holder is fixed to the top of the outer bulb and is electrically connected to the light source assembly. The top and bottom ends of the light source assembly are respectively connected to the inner wall of the outer bulb through the two positioning components. With the lateral placement direction of the light source assembly as the X-axis and the plane containing the X-axis as a horizontal plane, the outer bulb has a first surface and a second surface opposite to each other along the X-axis direction. The reflective film is coated on the first surface or the second surface, and the coating area of ​​the reflective film is located above a vertical plane perpendicular to the horizontal plane.

[0010] In the metal halide lamp, the reflective film is a film structure formed by nano-metal oxide particles.

[0011] In the metal halide lamp, the coating angle of the reflective film ranges from 45° to 90°.

[0012] In the metal halide lamp, the light source assembly includes a first bracket, a second bracket, a ceramic bracket, an arc tube, and two fixing plates. One side of the first bracket extends into the arc tube. The top of the first bracket and the top of the second bracket are respectively connected to the inner wall of the top of the outer bulb via either of the positioning components. The bottom of the first bracket is connected to the inner wall of the bottom of the outer bulb via the other positioning component. The top of the ceramic bracket is fixedly connected to the bottom of the second bracket and the top of the arc tube via either of the fixing plates. The bottom of the ceramic bracket is fixedly connected to the first bracket via the other fixing plate. The arc tube is electrically connected to the screw-type lamp holder.

[0013] In the metal halide lamp, the positioning component includes two elastic positioning pieces. The top of the first bracket and the top of the second bracket are respectively connected to the two elastic positioning pieces of the positioning component located at the top. The bottom sides of the first bracket are respectively connected to the two elastic positioning pieces of the positioning component located at the bottom.

[0014] In the metal halide lamp, the elastic positioning piece includes a positioning piece and two arc-shaped pieces, with the two arc-shaped pieces respectively disposed at both ends of the positioning piece; a positioning groove is formed on the inner side of the positioning piece, and the positioning groove is connected to the first bracket or the second bracket; the outer side of the positioning piece and the outer side of the two arc-shaped pieces respectively abut against the inner sidewall of the outer bubble shell.

[0015] The metal halide lamp also includes a rotating fixing component, which is fixedly connected to the screw-type lamp holder and is used to install and fix the metal halide lamp.

[0016] In the metal halide lamp, the rotating fixing component includes a lamp holder, a rotating assembly, and a mounting plate. The lamp holder has a mounting groove, and the screw-in lamp head is fixedly connected to the mounting groove. The bottom of the rotating assembly is connected to the lamp holder, and the top of the rotating assembly is connected to the mounting plate. The rotating assembly is used to drive the lamp holder to rotate relative to the mounting plate, and the mounting plate is used to install and fix the metal halide lamp.

[0017] In the metal halide lamp, the rotating assembly includes a base and a rotating component. The base has a rotating groove in the middle. The bottom of the rotating component is fixedly connected to the lamp holder, and the top of the rotating component is rotatably engaged with the rotating groove. The base has a first fixing hole on its side, which is used to fix the rotating component after it rotates. The mounting plate is fixedly connected to the base.

[0018] In the metal halide lamp, the mounting plate includes a first L-shaped fixing plate and a second L-shaped fixing plate. The horizontal sides of the first L-shaped fixing plate and the second L-shaped fixing plate are respectively fixedly connected to the base. The vertical side of the first L-shaped fixing plate and the vertical side of the second L-shaped fixing plate are detachably connected.

[0019] Beneficial effects:

[0020] This invention provides a metal halide lamp in which light rays originally emitted in a 360° pattern are reflected off the reflective film coating area (i.e., vertically above the first or second surface) and concentrated on the side without the reflective film, i.e., the direction facing the sea, thus achieving directional lighting. By coating the outer wall of the outer bulb with a reflective film, the problem of light waste caused by the 360° emission of existing metal halide lamps is solved. Light rays originally directed in ineffective directions, such as the inside of the ship's hull and the air above, are reflected to the working direction, i.e., the sea surface, significantly improving light utilization. In addition, by blocking light from one side, strong light can be prevented from shining directly into the eyes of fishermen, thereby reducing the risk of fishermen falling into the sea due to eye diseases and "flash blindness". Attached Figure Description

[0021] Figure 1 A schematic diagram of the structure of the metal halide lamp provided by this utility model;

[0022] Figure 2 Exploded view of the metal halide lamp provided by this utility model;

[0023] Figure 3 A schematic diagram of the connection structure of the light source assembly, positioning assembly, and screw-type lamp holder provided by this utility model;

[0024] Figure 4 A schematic diagram illustrating the working principle of the reflective film provided by this utility model.

[0025] Explanation of main component symbols: 1-Screw-type lamp holder, 2-Outer bulb shell, 3-Light source assembly, 31-First bracket, 32-Second bracket, 33-Ceramic bracket, 34-Arc tube, 35-Fixing plate, 4-Elastic positioning plate, 5-Reflective film, 6-Lamp holder, 7-Rotating assembly, 71-Base, 72-Rotating component, 8-Mounting plate. Detailed Implementation

[0026] This utility model provides a metal halide lamp. To make the purpose, technical solution and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments.

[0027] In the description of this utility model, it should be understood that the terms "top," "bottom," "inner," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and should not be construed as limiting this utility model; in addition, the terms "installation," "connection," etc. should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Please see Figures 1 to 4 This utility model provides a metal halide lamp, including a screw-type lamp head 1, an outer bulb 2, a light source assembly 3, two positioning components, and a reflective film 5; the screw-type lamp head 1 is fixed to the top of the outer bulb 2, and the screw-type lamp head 1 is electrically connected to the light source assembly 3; the top and bottom ends of the light source assembly 3 are respectively connected to the inner wall of the outer bulb 2 through the two positioning components; with the transverse placement direction of the light source assembly 3 as the X-axis, and the plane containing the X-axis as the horizontal plane, the outer bulb 2 has a first surface and a second surface opposite to each other along the X-axis direction, and the reflective film 5 is coated on the first surface or the second surface, and the coating area of ​​the reflective film 5 is located above a vertical plane perpendicular to the horizontal plane.

[0029] This utility model discloses a metal halide lamp. In the light source component 3, which originally emits light in a 360° divergence pattern, the light rays that are directed toward the area coated with the reflective film 5, i.e., vertically above the first or second surface, are reflected by the reflective film 5 and concentrated on the side without the reflective film 5, i.e., the direction facing the sea surface, thereby achieving directional lighting. By coating the outer wall of the outer bulb 2 with the reflective film 5, the problem of light waste caused by the 360° emission of existing metal halide lamps is solved. The light rays that were originally directed toward ineffective directions, such as the inside of the ship's hull and the sky, are reflected toward the working direction, i.e., the sea surface, significantly improving the light utilization rate. In addition, by blocking the light from one side, strong light can be prevented from shining directly into the eyes of fishermen, thereby reducing the risk of fishermen falling into the sea due to eye diseases and "flash blindness".

[0030] In this embodiment, the bottom of the screw-type lamp holder 1 is fixedly bonded to the top port edge of the outer shell 2 with a high-temperature resistant adhesive, such as high-temperature ceramic adhesive, to ensure that there is no relative displacement between the screw-type lamp holder 1 and the outer shell 2. This ensures the stability of the power supply path, withstands the high-temperature environment when the metal halide lamp is working, and prevents internal gas leakage.

[0031] Preferably, the reflective film 5 is a film structure formed by nano-metal oxide particles, including nano-TiO2 particles or nano-ZrO2 particles. Compared with ordinary reflective films 5, the nanostructure can improve the reflection efficiency of the reflective film 5, reduce light loss, and further enhance the directional lighting effect. Moreover, the nano-metal oxide particles have high reflectivity and high temperature resistance, with a reflectivity of not less than 81% in the 400-1000nm wavelength band and the ability to withstand a working temperature of 200-300℃. These characteristics enable the reflective film 5 to reflect light efficiently and to adhere stably to the surface of the outer bulb 2 for a long time without falling off due to high temperature, thereby improving the stability of the metal halide lamp during operation and extending the service life of the metal halide lamp.

[0032] Preferably, the coating angle of the reflective film 5 ranges from 45° to 90°, with the direction perpendicular to the horizontal plane of the X-axis as the reference direction, the center of the light source assembly 3 as the origin, and 90° perpendicular to the horizontal plane upwards defined as 90°, with the lamp tilted outwards to 45°. By designing a reflection angle of 45° to 90°, ineffective light from different directions can be accurately reflected. Specifically, the 90° area can reflect vertically upward light, the 60° to 75° area can reflect obliquely upward light, and the 45° area can reflect nearly horizontally upward light. After the reflection treatment of the reflective film 5 in specific angle areas, the reflected light can be concentrated into an effective 120° illumination range facing the sea surface. This coating angle range is adapted according to the fishing boat operation scenario, ensuring that the reflected light is focused on the sea surface, thereby maximizing the range and depth of fish attraction, effectively avoiding the problem of light overlap and waste due to excessive reflection angle, or insufficient illumination range due to insufficient reflection angle.

[0033] Further, please refer to Figure 2 and Figure 3The light source assembly 3 includes a first bracket 31, a second bracket 32, a ceramic bracket 33, an arc tube 34, and two fixing plates 35. One side of the first bracket 31 extends into the arc tube 34. The top of the first bracket 31 and the top of the second bracket 32 ​​are respectively connected to the inner top wall of the outer bubble shell 2 through one of the positioning components. The bottom of the first bracket 31 is connected to the inner bottom wall of the outer bubble shell 2 through the other positioning component. The top of the ceramic bracket 33 is fixedly connected to the bottom of the second bracket 32 ​​and the top of the arc tube 34 through one of the fixing plates 35. The bottom of the ceramic bracket 33 is fixedly connected to the first bracket 31 through the other fixing plate 35. The arc tube 34 is electrically connected to the screw-type lamp holder 1.

[0034] In this embodiment, the first bracket 31 penetrates the interior of the arc tube 34, serving as the core component supporting the arc tube 34; the positioning assembly is used to fix the light source assembly 3 vertically; the fixing piece 35 is used to fix the ceramic bracket 33 to the first bracket 31 and the second bracket 32, and also to enhance the lateral stability of the arc tube 34, ensuring that the arc tube 34 will not shift when the fishing boat is rocking, thereby maintaining a stable arc discharge light emission effect; the ceramic bracket 33, due to its high temperature resistance and insulation... The characteristics isolate the high temperature of the arc tube 34 from the first support 31 and the second support 32, avoiding damage to the components due to heat conduction; the arc tube 34 obtains power through the screw-type lamp holder 1 to generate an electric arc, and the realization of this light-emitting function is existing technology; specifically, the arc tube 34 emits light by arc discharge of a mixture of mercury and rare metal halide vapors, and the screw-type lamp holder 1 serves as a power interface, responsible for transmitting external AC power to the electrodes of the arc tube 34, thereby triggering an arc discharge inside the tube and realizing the light-emitting function of the arc tube 34.

[0035] In this embodiment, the fixing piece 35 is made of a thin metal sheet, such as a high-temperature resistant stainless steel sheet, and its shape is rectangular or arc-shaped. The surface of the fixing piece 35 is provided with screw holes or buckle grooves for fixing to the first bracket 31, the second bracket 32, the ceramic bracket 33 and the arc tube 34 by screws or buckles.

[0036] Further, please refer to Figure 2 and Figure 3 The positioning component includes two elastic positioning pieces 4. The top of the first bracket 31 and the top of the second bracket 32 ​​are respectively connected to the two elastic positioning pieces 4 of the positioning component located at the top. The bottom sides of the first bracket 31 are respectively connected to the two elastic positioning pieces 4 of the positioning component located at the bottom.

[0037] In this embodiment, the elastic positioning piece 4 utilizes its own elasticity to form a buffer between the first support 31, the second support 32, and the outer shell 2: when the fishing boat rocks, the elastic deformation absorbs the vibration energy, reduces the mechanical wear of the light source assembly 3 and the outer shell 2, and avoids damage to the support or the outer shell 2 caused by rigid collision, thus extending the overall lifespan of the metal halide lamp; at the same time, the elastic positioning piece can keep the relative positions of the first support 31, the second support 32, and the outer shell 2 stable, ensuring that the light source assembly 3 does not shift during vibration, maintaining the relative position of the reflective film 5 and the light, and ensuring stable directional lighting effect.

[0038] Further, please refer to Figure 2 and Figure 3 The elastic positioning piece 4 includes a positioning piece and two arc-shaped pieces, with the two arc-shaped pieces respectively disposed at both ends of the positioning piece; a positioning groove is provided on the inner side of the positioning piece, and the positioning groove is connected to the first bracket 31 or the second bracket 32; the outer side of the positioning piece and the outer side of the two arc-shaped pieces respectively abut against the inner sidewall of the outer bubble shell 2.

[0039] In this embodiment, the positioning piece and the arc-shaped piece are integrally formed. The arc-shaped piece is adapted to the arc-shaped inner wall of the outer bubble shell 2. By fitting the arc-shaped piece to the inner wall of the outer bubble shell 2, the contact area is increased, improving the stability of the installation. At the same time, the elastic synergy between the arc-shaped structure and the positioning piece enhances the vibration buffering effect. The positioning groove achieves precise positioning of the first bracket 31 and the second bracket 32 ​​through a snap-fit ​​mechanism, avoiding lateral displacement of the first bracket 31 or the second bracket 32, preventing reflection angle deviation caused by the offset of the light source component 3, and ensuring the accuracy of directional lighting.

[0040] Further, please refer to Figure 1 and Figure 2 The metal halide lamp also includes a rotating fixing component, which is fixedly connected to the screw-type lamp holder 1. The rotating fixing component is used to install and fix the metal halide lamp.

[0041] In this embodiment, the overall installation angle of the metal halide lamp is precisely adjusted by rotating the fixing component, ensuring that the light reflected by the reflective film 5 always faces the sea surface. The metal halide lamp has the advantage of flexible installation, and the lamp angle can be flexibly adjusted according to the specific needs of fishing boat operations to adapt to different sea areas and different fish schools. By cooperating with the rotating fixing component, the error in the direction of reflected light caused by installation angle deviation is effectively avoided, thereby ensuring the efficiency of light utilization.

[0042] Further, please refer to Figure 1 and Figure 2The rotating fixing component includes a lamp holder 6, a rotating assembly 7, and a mounting plate 8. The lamp holder 6 has a mounting groove, and the screw-type lamp head 1 is fixedly connected to the mounting groove. The bottom of the rotating assembly 7 is connected to the lamp holder 6, and the top of the rotating assembly 7 is connected to the mounting plate 8. The rotating assembly 7 is used to drive the lamp holder 6 to rotate relative to the mounting plate 8, and the mounting plate 8 is used to install and fix the metal halide lamp.

[0043] In this embodiment, the screw-type lamp head 1 and the lamp holder 6 are connected by an interference fit or by a thread; the rotating component 7 can drive the lamp holder 6 to rotate relative to the mounting plate 8, thereby adjusting the angle of the screw-type lamp head 1 and the outer bulb 2, that is, adjusting the orientation of the light source component 3 and the reflective film 5, so as to realize the flexible adjustment of the lighting direction of the lamp to adapt to the changes in the swaying of the fishing boat or the operation scene, such as the requirements for the light angle when the heading is different.

[0044] Further, please refer to Figure 1 and Figure 2 The rotating assembly 7 includes a base 71 and a rotating component 72. The base 71 has a rotating groove in the middle. The bottom of the rotating component 72 is fixedly connected to the lamp holder 6, and the top of the rotating component 72 is rotatably engaged with the rotating groove. The base 71 has a first fixing hole on its side, which is used to fix the rotating component 72 after it rotates. The mounting plate 8 is fixedly connected to the base 71.

[0045] In this embodiment, the rotating component 72 can rotate 360° within the rotating groove of the base 71, driving the lamp holder 6 and the outer bulb 2 to rotate as a whole, thereby achieving all-round angle adjustment. When the rotating component 72 rotates to the target angle, a screw is passed through the first fixing hole to tighten the rotating component 72, preventing it from continuing to rotate and ensuring that the angle is locked. This achieves the locking and fixing of the rotating component 72, thereby meeting the stability requirements of the fishing boat when it is rocking, preventing angle deviation caused by vibration, and ensuring the continuous and stable directional lighting effect.

[0046] In this embodiment, please refer to Figure 2 The bottom of the rotating component 72 is provided with a connecting plate, and the top of the lamp holder 6 is provided with a connecting seat. The connecting plate is provided with a second fixing hole, and the connecting seat is provided with a corresponding third fixing hole. The second fixing hole and the third fixing hole are bolted together.

[0047] In this embodiment, please refer to Figure 2 The base 71 has connecting ears integrally formed with the base 71 on both sides. The connecting ears have a fourth fixing hole. The bottom of the mounting plate 8 has a fifth fixing hole. The fourth fixing hole and the fifth fixing hole are bolted together.

[0048] Further, please refer to Figure 1 and Figure 2 The mounting piece 8 includes a first L-shaped fixing piece 35 and a second L-shaped fixing piece 35. The horizontal side of the first L-shaped fixing piece 35 and the horizontal side of the second L-shaped fixing piece 35 are respectively fixedly connected to the base 71. The vertical side of the first L-shaped fixing piece 35 is detachably connected to the vertical side of the second L-shaped fixing piece 35.

[0049] In this embodiment, the horizontal sides of the two L-shaped fixing plates 35 are bolted to the base 71, and the vertical sides of the two L-shaped fixing plates 35 are connected by screws or other detachable means. By adjusting the connection position of the vertical side, the width can be adapted to accommodate external carriers of different sizes, so that the mounting plate 8 can be tightly clamped or attached to various external carriers such as fishing boat railings and brackets, thereby achieving a stable fixation between the mounting plate 8 and the external carrier and effectively improving the installation adaptability of the metal halide lamp.

[0050] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A metal halide lamp, characterized in that, The device includes a screw-in lamp holder, an outer bulb, a light source assembly, two positioning components, and a reflective film. The screw-in lamp holder is fixed to the top of the outer bulb and is electrically connected to the light source assembly. The top and bottom ends of the light source assembly are respectively connected to the inner wall of the outer bulb through the two positioning components. With the lateral placement direction of the light source assembly as the X-axis and the plane containing the X-axis as a horizontal plane, the outer bulb has a first surface and a second surface opposite to each other along the X-axis. The reflective film is coated on the first surface or the second surface, and the coating area of ​​the reflective film is located above a vertical plane perpendicular to the horizontal plane.

2. A metal halide lamp according to claim 1, characterized in that, The reflective film is a film structure formed by nano-metal oxide particles.

3. A metal halide lamp according to claim 2, characterized in that, The coating angle of the reflective film ranges from 45° to 90°.

4. A metal halide lamp according to claim 1, characterized in that, The light source assembly includes a first bracket, a second bracket, a ceramic bracket, an arc tube, and two fixing plates. One side of the first bracket extends into the arc tube. The top of the first bracket and the top of the second bracket are respectively connected to the inner wall of the top of the outer bubble shell through one of the positioning components. The bottom of the first bracket is connected to the inner wall of the bottom of the outer bubble shell through the other positioning component. The top of the ceramic bracket is fixedly connected to the bottom of the second bracket and the top of the arc tube through one of the fixing plates. The bottom of the ceramic bracket is fixedly connected to the first bracket through the other fixing plate. The arc tube is electrically connected to the screw-type lamp holder.

5. A metal halide lamp according to claim 4, characterized in that, The positioning component includes two elastic positioning pieces. The top of the first bracket and the top of the second bracket are respectively connected to the two elastic positioning pieces of the positioning component located at the top. The bottom sides of the first bracket are respectively connected to the two elastic positioning pieces of the positioning component located at the bottom.

6. A metal halide lamp according to claim 5, characterized in that, The elastic positioning piece includes a positioning piece and two arc-shaped pieces, with the two arc-shaped pieces respectively disposed at both ends of the positioning piece; a positioning groove is formed on the inner side of the positioning piece, and the positioning groove is connected to the first bracket or the second bracket; the outer side of the positioning piece and the outer side of the two arc-shaped pieces respectively abut against the inner sidewall of the outer bubble shell.

7. A metal halide lamp according to claim 1, characterized in that, It also includes a rotating fastener, which is fixedly connected to the screw-type lamp holder and is used to install and fix the metal halide lamp.

8. A metal halide lamp according to claim 7, characterized in that, The rotating fixing component includes a lamp holder, a rotating assembly, and a mounting plate. The lamp holder has a mounting groove, and the screw-in lamp head is fixedly connected to the mounting groove. The bottom of the rotating assembly is connected to the lamp holder, and the top of the rotating assembly is connected to the mounting plate. The rotating assembly is used to drive the lamp holder to rotate relative to the mounting plate, and the mounting plate is used to install and fix the metal halide lamp.

9. A metal halide lamp according to claim 8, characterized in that, The rotating assembly includes a base and a rotating component. A rotating groove is provided in the middle of the base. The bottom of the rotating component is fixedly connected to the lamp holder, and the top of the rotating component is rotatably engaged with the rotating groove. A first fixing hole is provided on the side of the base, which is used to fix the rotating component after it rotates. The mounting plate is fixedly connected to the base.

10. A metal halide lamp according to claim 9, characterized in that, The mounting plate includes a first L-shaped fixing plate and a second L-shaped fixing plate. The horizontal sides of the first L-shaped fixing plate and the second L-shaped fixing plate are respectively fixedly connected to the base. The vertical side of the first L-shaped fixing plate is detachably connected to the vertical side of the second L-shaped fixing plate.

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