Illuminating device for soilless culture device

Abstract

The utility model relates to the technical field of lighting devices for soilless culture devices, and discloses a lighting device for a soilless culture device, which comprises a shell, a lighting lamp and a light reflecting mechanism, the shell is used for being arranged on a workbench, the shell is provided with a containing cavity, and the containing cavity is used for containing the lighting lamp, the light reflecting mechanism and a cultivation plate. The illuminating lamp is used for being arranged above the cultivation plate, the light reflecting mechanism is installed on the cavity wall of the containing cavity, the light reflecting mechanism comprises a plurality of light reflecting assemblies arranged in the circumferential direction of the illuminating lamp, the light reflecting assemblies jointly define an illumination area, and the illumination area is used for containing the cultivation plate. By reasonably arranging the light reflecting assemblies, illumination dead angles can be reduced to the maximum extent, light can be evenly distributed on the cultivation plate, uniform growth of plants can be promoted, light emitted by the illuminating lamp can be effectively reflected to the plants, and therefore light loss can be reduced, and the utilization efficiency of illumination can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of soilless culture equipment, specifically to a lighting device for soilless culture device. BACKGROUND

[0002] Soilless culture technology is an advanced agricultural planting method, which directly supplies plants with the nutrients they need through nutrient solution, without relying on traditional soil. This method has significant advantages in improving crop yield, saving water resources, reducing pests and diseases, etc. However, light management in soilless culture systems is one of the key factors, as it directly affects plant photosynthesis and growth and development. Therefore, developing efficient lighting devices has become an important part of soilless culture technology.

[0003] Although existing soilless culture lighting devices have made some progress, there are still some problems in practical application: (1) insufficient uniformity of light, the existing light reflection mechanism design often fails to ensure uniform distribution of light on the entire cultivation board, resulting in some areas with too strong or too weak light. (2) poor flexibility, the existing light reflection mechanism is usually fixed at one angle and cannot be flexibly adjusted according to different cultivation areas and light requirements. (3) energy waste, when the light area is larger than the cultivation area, part of the light will be wasted in unnecessary areas, resulting in low energy efficiency. SUMMARY

[0004] The purpose of the utility model is to provide a lighting device for soilless culture device to solve the problems raised in the background technology.

[0005] To achieve the above purpose, the present disclosure provides a lighting device for soilless culture device, comprising a housing, a lighting lamp, a light reflection mechanism;

[0006] The housing is used to be arranged on the workbench, and the housing has a receiving cavity for accommodating the lighting lamp, the light reflection mechanism and the cultivation board.

[0007] The lighting lamp is arranged above the cultivation board.

[0008] The light reflection mechanism is installed on the cavity wall of the receiving cavity, and the light reflection mechanism comprises a plurality of light reflection components arranged circumferentially around the lighting lamp. The plurality of light reflection components collectively enclose a light area for accommodating the cultivation board.

[0009] Optionally, the light reflection component comprises a light reflection plate and an adjusting piece, one end of the adjusting piece is connected to the cavity wall of the receiving cavity, the other end of the adjusting piece is connected to the light reflection plate, and the adjusting piece is used to adjust the included angle between the light reflection plate and the vertical plane to change the illumination range of the light area.

[0010] The light-reflecting plate is configured as a trapezoidal structure, and the cross-sectional area of the light-reflecting plate gradually increases in a direction from top to bottom.

[0011] Optionally, the light-reflecting assembly further comprises a connecting rod, and the adjusting member comprises an adjusting disc, a rotating disc and a limiting rod.

[0012] The adjusting disc is arranged on a cavity wall of the accommodating cavity, and a plurality of through holes are formed on the adjusting disc and are arranged at intervals in a circumferential direction of the adjusting disc.

[0013] One end of the connecting rod is connected to the light-reflecting plate, and the other end of the connecting rod is connected to the rotating disc.

[0014] The rotating disc is rotatably connected to the adjusting disc, and the limiting rod is movably mounted on the adjusting disc so as to be capable of being inserted into or withdrawn from the through hole on one side of the adjusting disc.

[0015] Optionally, the adjusting member further comprises an accommodating shell.

[0016] The accommodating shell is arranged on a side of the rotating disc away from the adjusting disc, the limiting rod movably penetrates the accommodating shell and the rotating disc, and an end of the limiting rod away from the rotating disc protrudes outward from the accommodating shell and forms an operation portion.

[0017] Optionally, the adjusting member further comprises an elastic member, the elastic member is located in the accommodating shell and is sleeved on the limiting rod, a first end of the elastic member is connected to the limiting rod, and a second end of the elastic member is connected to an inner wall of the accommodating shell.

[0018] Optionally, the limiting rod comprises a rod segment and a protruding portion protruding outward from the rod segment in a radial direction of the rod segment, the elastic member is sleeved on the rod segment, and a first end of the elastic member is connected to the protruding portion.

[0019] Optionally, the lighting device further comprises a support and a plurality of support columns.

[0020] The shell body has opposite first and second open ends.

[0021] The support is arranged on the first open end, and the lighting lamp is used for being hung on the support.

[0022] The plurality of support columns are arranged at intervals in a circumferential direction of the second open end, first ends of the plurality of support columns are mounted on the second open end, and second ends of the plurality of support columns are used for being connected to the workbench so that the shell body is suspended on the workbench.

[0023] Optionally, the lighting device further comprises a sealing cover.

[0024] The sealing cover has a cavity for accommodating the shell, the support, the support column and the illuminating lamp, and an opening is formed in the sealing cover and communicates with the cavity, and the sealing cover covers the shell, the support, the support column and the illuminating lamp through the opening;

[0025] The sealing cover is provided with a ventilation hole.

[0026] Optionally, the sealing cover is made of transparent material.

[0027] Through the above technical solution, the plurality of light reflection components of the light reflection mechanism jointly enclose a light irradiation area, so that the cultivation plate is located in the light irradiation area, so that the plants on the cultivation plate can uniformly receive light. That is, by reasonably arranging the light reflection components, the light irradiation dead angle can be minimized, the light can be uniformly distributed on the cultivation plate, not only the uniform growth of the plants can be promoted, but also the light emitted by the illuminating lamp can be effectively reflected to the plants, so that the loss of light can be reduced and the utilization efficiency of light irradiation can be improved.

[0028] Other features and advantages of the present disclosure will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0029] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, and are used together with the following specific embodiments to explain the present disclosure, but do not constitute a limitation on the present disclosure. In the drawings:

[0030] Figure 1 is a structural schematic view of the illuminating device for soilless cultivation device provided by an exemplary embodiment of the present disclosure, wherein the light reflection component is in a first state;

[0031] Figure 2 is a structural schematic view of the illuminating device for soilless cultivation device provided by an exemplary embodiment of the present disclosure, wherein the light reflection component is in a second state;

[0032] Figure 3 is a structural schematic view of the light reflection component of the illuminating device for soilless cultivation device provided by an exemplary embodiment of the present disclosure;

[0033] Figure 4 is a sectional view of the adjusting member of the illuminating device for soilless cultivation device provided by an exemplary embodiment of the present disclosure.

[0034] EXPLANATION OF REFERENCE NUMERALS

[0035] 10, housing; 11, accommodating cavity; 20, illuminating lamp; 30, light reflection mechanism; 31, light reflection assembly; 311, light reflection plate; 312, adjusting piece; 3121, adjusting disc; 3122, rotating disc; 3123, limiting rod; 3124, rod segment; 3125, protruding part; 3126, through hole; 3127, accommodating shell; 3128, operating part; 3129, elastic piece; 313, connecting rod; 32, light exposure area; 40, workbench; 50, cultivation plate; 60, support; 70, support column. DETAILED DESCRIPTION

[0036] The specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0037] In the present disclosure, unless otherwise stated, the orientation words such as "up, down, left, right" are generally defined as the direction of the drawing surface, and "inner, outer" refers to the inner and outer contours of the relevant components. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present disclosure, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0039] As shown in Figures 1 to 4 The present disclosure provides a soilless culture device lighting device, which comprises a housing 10, an illuminating lamp 20, and a light reflection mechanism 30. The housing 10 is arranged on a workbench 40. The housing 10 has an accommodating cavity 11 for accommodating the illuminating lamp 20, the light reflection mechanism 30, and a cultivation plate 50. The illuminating lamp 20 is arranged above the cultivation plate 50. The light reflection mechanism 30 is installed on the cavity wall of the accommodating cavity 11. The light reflection mechanism 30 comprises a plurality of light reflection assemblies 31 arranged circumferentially around the illuminating lamp 20. The plurality of light reflection assemblies 31 collectively enclose a light exposure area 32 for accommodating the cultivation plate 50.

[0040] Among them, the housing 10 is used to install and protect the illuminating lamp 20 and the light reflection mechanism 30 inside. It provides a closed or semi-closed environment, which helps to control the light exposure conditions.

[0041] The lighting lamp 20 is a main source of light supply, which is used to simulate sunlight and provide light required for photosynthesis of plants. Specifically, the lighting lamp 20 is arranged above the cultivation plate 50 to ensure that light can directly irradiate on the plants.

[0042] The light reflection mechanism 30 includes a plurality of light reflection components 31, which are arranged circumferentially around the lighting lamp 20 and jointly enclose a light irradiation area 32. The light reflection mechanism 30 is used to reflect light emitted by the lighting lamp 20 to improve light irradiation efficiency and ensure that light can uniformly cover the entire light irradiation area 32.

[0043] Through the above technical solution, the plurality of light reflection components 31 of the light reflection mechanism 30 jointly enclose a light irradiation area 32, so that the cultivation plate 50 is located in the light irradiation area 32. In this way, it can be ensured that the plants on the cultivation plate 50 can uniformly receive light irradiation. That is, by reasonably arranging the light reflection components 31, the light irradiation dead angle can be minimized, and light can be uniformly distributed on the cultivation plate 50. This not only promotes the uniform growth of plants, but also effectively reflects light emitted by the lighting lamp 20 to plants, thereby reducing light loss and improving light utilization efficiency.

[0044] As an embodiment, as shown in Figures 1 to 2 The light reflection component 31 includes a light reflection plate 311 and an adjusting piece 312. One end of the adjusting piece 312 is connected to the cavity wall of the accommodating cavity 11, and the other end of the adjusting piece 312 is connected to the light reflection plate 311. The adjusting piece 312 is used to adjust the included angle between the light reflection plate 311 and the vertical plane to change the irradiation range of the light irradiation area 32. The light reflection plate 311 is configured in a trapezoidal structure, and the cross-sectional area of the light reflection plate 311 gradually increases in the direction from top to bottom.

[0045] It should be noted that each light reflection plate 311 can be designed in a shape capable of reflecting light, and can be made of a material with high reflectivity, such as aluminum foil or mirror stainless steel.

[0046] The light reflection plate 311 is used to reflect light emitted by the lighting lamp 20, so that light can more uniformly irradiate on the plants. The trapezoidal structure design can effectively reflect light at different angles, especially when the angle is adjusted, the diffusion range of light can be changed.

[0047] The other end of the adjusting member 312 is connected to the light-reflecting plate 311. This connection allows the light-reflecting plate 311 to be adjusted in angle relative to the cavity wall. The adjusting member 312 is used to adjust the angle between the light-reflecting plate 311 and the vertical plane. By changing this angle, the illumination range of the light-illuminating area 32 can be changed, so that the light-illuminating conditions can be adjusted according to the height of the plants, the growth needs of the plants, or the changes in the cultivation environment, thereby ensuring more concentrated and efficient illumination and avoiding unnecessary energy waste.

[0048] When the cultivation area of the cultivation plate 50 is small, the light-reflecting assembly 31 can be in a first state (as shown in FIG. 6A), i.e., the angle of the light-reflecting plate 311 can be adjusted to a more concentrated state. For example, the light-reflecting plate 311 can be set to a smaller opening angle, so that the reflected light is more concentrated. At this time, the area of the light-illuminating area 32 is adapted to the cultivation area, and can cover a smaller cultivation area. Figure 1

[0049] When the cultivation area of the cultivation plate 50 is large, the light-reflecting assembly 31 can be in a second state (as shown in FIG. 6B), i.e., the angle of the light-reflecting plate 311 can be adjusted to a larger opening angle, so that the reflected light can cover a larger area. The light-reflecting plate 311 can be set to a more gentle angle, so that the light is diffused. At this time, the area of the light-illuminating area 32 is adapted to the cultivation area, and can cover a larger cultivation area. In addition, in the case of an increased area of the light-illuminating area 32, the light intensity can be reduced. The reduction in light intensity can be compensated by increasing the number of lighting lamps 20 or increasing the power of the lighting lamps 20. Figure 2

[0050] That is, by adjusting the adjusting member 312, the angle of the light-reflecting plate 311 can be changed, thereby changing the reflection direction and range of the light. When the angle of the light-reflecting plate 311 is increased, the illumination range of the light will be wider, but the intensity will be reduced; on the contrary, when the angle of the light-reflecting plate 311 is reduced, the illumination range of the light will be narrower, but the intensity will be increased. In addition, the light-reflecting plate 311 with a trapezoidal structure can effectively reflect light at different angles, making the illumination more uniform. This design is particularly suitable for multi-layer planting or situations where the light-illuminating area 32 needs to be precisely controlled. Such a design not only improves the uniformity and efficiency of the illumination, but also increases the flexibility of the system, so that the soilless cultivation device can better adapt to various cultivation needs.

[0051] As an embodiment, as shown in FIG. 7, the adjusting member 312 can be a rotating member, and the light-reflecting plate 311 can be connected to the rotating member. Figure 3 ​​As shown, the reflective component 31 further comprises a connecting rod 313, and the adjusting member 312 comprises an adjusting disc 3121, a rotating disc 3122, and a limiting rod 3123. The adjusting disc 3121 is arranged on the cavity wall of the accommodating cavity 11, and a plurality of through holes 3126 are formed on the adjusting disc 3121 and are arranged at intervals along the circumference of the adjusting disc 3121. One end of the connecting rod 313 is connected to the reflective plate 311, and the other end of the connecting rod 313 is connected to the rotating disc 3122. The rotating disc 3122 is rotatably connected to the adjusting disc 3121. The limiting rod 3123 is movably installed on the adjusting disc 3121 and can be inserted into or withdrawn from the through holes 3126 on one side of the adjusting disc 3121.

[0052] The operator can rotate the rotating disc 3122 manually or mechanically, so that the connecting rod 313 and the reflective plate 311 rotate, thereby changing the angle of the reflective plate 311.

[0053] When the reflective plate 311 is rotated to the desired angle, the limiting rod 3123 can be inserted into the corresponding through hole 3126 on the adjusting disc 3121 to fix the position of the rotating disc 3122, thereby fixing the angle of the reflective plate 311.

[0054] Through the cooperation of the limiting rod 3123 and the through hole 3126, it can be ensured that the reflective plate 311 remains stable at the set angle and can avoid changing position due to slight vibration or external force.

[0055] That is, through the cooperation of the adjusting disc 3121 and the rotating disc 3122, the angle of the reflective plate 311 can be accurately adjusted. In addition, the design of the limiting rod 3123 and the through hole 3126 can provide a reliable locking mechanism and can ensure that the reflective plate 311 remains stable at the set angle. In this way, not only can the flexibility and accuracy of the lighting system be improved, but also the stability and reliability of the system can be enhanced.

[0056] As an embodiment, as shown in the drawings, Figure 4 As shown, the adjusting member 312 further comprises an accommodating shell 3127 arranged on the side of the rotating disc 3122 away from the adjusting disc 3121. The limiting rod 3123 movably penetrates the accommodating shell 3127 and the rotating disc 3122, and the end of the limiting rod 3123 away from the rotating disc 3122 protrudes outward from the accommodating shell 3127 and forms an operating portion 3128.

[0057] The accommodating shell 3127 not only protects the limiting rod 3123 but also provides guidance for the movement of the limiting rod 3123, which can ensure that the limiting rod 3123 can be accurately inserted into or withdrawn from the through hole 3126 on the adjusting disc 3121.

[0058] The limiting rod 3123 is used to lock the position of the rotating disc 3122. When the rotating disc 3122 is rotated to the desired position, the limiting rod 3123 can be inserted into the corresponding through hole 3126 on the adjusting disc 3121 to fix the rotating disc 3122, so as to fix the angle of the reflector plate 311.

[0059] The operator can rotate the rotating disc 3122 manually or mechanically, so as to rotate the connecting rod 313 and the reflector plate 311, thereby changing the angle of the reflector plate 311. When the reflector plate 311 is rotated to the desired angle, the operator can push the limiting rod 3123 through the accommodating shell 3127 and the rotating disc 3122 by operating the operating part 3128, and insert it into the corresponding through hole 3126 on the adjusting disc 3121 to fix the position of the rotating disc 3122, so as to fix the angle of the reflector plate 311.

[0060] As an embodiment, as shown in Figure 4 The adjusting part 312 further comprises an elastic member 3129, which is located in the accommodating shell 3127 and is sleeved on the limiting rod 3123. The first end of the elastic member 3129 is connected to the limiting rod 3123, and the second end of the elastic member 3129 is connected to the inner wall of the accommodating shell 3127.

[0061] Specifically, when it is needed to unlock and readjust the angle of the reflector plate 311, the operator can pull the operating part 3128 to pull out the limiting rod 3123 from the through hole 3126. During the pulling-out process, the elastic member 3129 can provide a restoring force to automatically return the limiting rod 3123 to the initial position, facilitating the next insertion. The elastic member 3129 can also play a buffering role during the insertion and pulling-out processes, which can reduce the wear between the limiting rod 3123 and the through hole 3126, and can prolong the service life of the entire adjusting part 312.

[0062] That is, the resetting function of the elastic member 3129 can make the operation of the limiting rod 3123 more convenient, and the operator can complete the locking and unlocking by pulling or pushing slightly. Moreover, the pressure provided by the elastic member 3129 can ensure that the limiting rod 3123 is more stable in the locked state and is not easy to be pulled out due to external force. In addition, the design of the elastic member 3129 can reduce the risk of loosening or falling of the limiting rod 3123 caused by misoperation, and can improve the safety of the system.

[0063] Optionally, the elastic member 3129 is a spring.

[0064] As an embodiment, as shown in Figure 4As shown, the limiting rod 3123 includes a rod segment 3124 and a protruding portion 3125 protruding radially outward from the rod segment 3124, and the elastic member 3129 is sleeved on the rod segment 3124, and the first end of the elastic member 3129 is connected to the protruding portion 3125. The cooperation of the protruding portion 3125 and the elastic member 3129 not only improves the operation convenience and stability of the adjusting member 312, but also makes the entire adjusting system more compact, thereby saving space.

[0065] The protruding portion 3125 can serve as the connection point of the elastic member 3129 and also as the limiting point of the movement of the limiting rod 3123. The protruding portion 3125 can limit the movement range of the elastic member 3129 on the rod segment 3124 and can ensure that the elastic member 3129 can provide stable restoring force.

[0066] Optionally, the protruding portion 3125 can be a ring structure and is fixed at a certain position of the rod segment 3124.

[0067] As an embodiment, as shown in Figures 1 to 2 The lighting device further includes a support 60 and a plurality of support columns 70. The housing 10 has opposite first and second open ends. The support 60 is arranged on the first open end, and the lighting lamp 20 is hung on the support 60. The plurality of support columns 70 are arranged along the circumference of the second open end. The first ends of the plurality of support columns 70 are installed on the second open end, and the second ends of the plurality of support columns 70 are used to connect with the workbench 40, so that the housing 10 is suspended on the workbench 40.

[0068] The housing 10 is suspended on the workbench 40 through the support columns 70. The first ends of the support columns 70 are fixed on the second open end of the housing 10, and the second ends are fixed on the workbench 40. The suspension design of the housing 10 makes the housing 10 maintain at a proper height, which is convenient for the growth and operation of plants. Specifically, the operation space between the housing 10 and the workbench 40 is provided by the support columns 70, for example, an operator pushes the cultivation plate 50 into the illumination area 32 or pulls the cultivation plate 50 out of the illumination area 32 through the operation space.

[0069] The support 60 is installed on the first open end of the housing 10, and the lighting lamp 20 is hung on the support 60 through a cable. In addition, the height position of the lighting lamp 20 can be adjusted to ensure that the light can uniformly irradiate the plants on the cultivation plate 50.

[0070] As an implementation, the lighting device further comprises a sealing cover (not shown), which has a cavity for accommodating the shell 3127 body 10, the bracket 60, the support column 70 and the lighting lamp 20, and an opening is formed on the sealing cover and communicates with the cavity. The sealing cover covers the shell 10, the bracket 60, the support column 70 and the lighting lamp 20 through the opening, and an air hole (not shown) is arranged on the sealing cover.

[0071] The sealing cover can provide an additional protective layer, which can prevent external pollutants (such as dust or moisture) from entering the lighting device, thereby prolonging the service life of the device.

[0072] The air hole can be used to ensure the circulation of internal air, help heat dissipation, prevent the internal temperature from being too high, and also help to exhaust moisture and keep the inside dry.

[0073] By arranging the sealing cover, the lighting device can not only be comprehensively protected, but also ensure good ventilation and heat dissipation effect.

[0074] As an implementation, the sealing cover can be transparent.

[0075] The design of the transparent sealing cover can not only make full use of natural light to supplement or replace part of the artificial light source, thereby reducing energy consumption and operating cost, but also enable the operator to directly observe the internal plant growth without opening the sealing cover, thereby facilitating daily management and monitoring.

[0076] The transparent sealing cover can be made of a transparent material with high light transmittance, such as polycarbonate (PC) or acrylic (PMMA).

[0077] As another implementation, the sealing cover can be made of a non-transparent material.

[0078] The design of the non-transparent sealing cover can not only better control the light conditions, especially in plant cultivation requiring specific light cycles (such as day-night cycles), but also prevent external stray light interference and ensure that the plants grow under the set light conditions. In addition, non-transparent materials generally have good heat insulation performance, which helps to maintain a constant temperature inside the device and reduces the influence of external temperature fluctuations. In high-temperature or low-temperature environments, the non-transparent sealing cover can reduce heat exchange, thereby reducing the energy consumption of air conditioning or heating systems.

[0079] The non-transparent sealing cover can be made of stainless steel, PVC or glass fiber reinforced plastic (FRP), and the present disclosure does not limit the material.

[0080] The preferred embodiments of the present disclosure are described in detail above with reference to the drawings, but the present disclosure is not limited to the specific details in the above-described embodiments. Various simple modifications can be made to the technical solutions of the present disclosure within the technical concept of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0081] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, various possible combinations are not described again in the present disclosure.

[0082] In addition, various different embodiments of the present disclosure can also be combined in any appropriate manner, as long as they do not deviate from the idea of the present disclosure, and they should also be considered as disclosed in the present disclosure.

Claims

1. A lighting device for a hydroponics system, characterized in that, Includes housing (10), lighting lamp (20), and reflector (30); The housing (10) is used to be mounted on the workbench (40), and the housing (10) has a receiving cavity (11) for accommodating the lighting lamp (20), the reflector (30) and the cultivation plate (50). The lighting lamp (20) is used to be positioned above the cultivation plate (50); The reflective mechanism (30) is installed on the cavity wall of the receiving cavity (11). The reflective mechanism (30) includes a plurality of reflective components (31) arranged circumferentially along the lighting lamp (20). The plurality of reflective components (31) together enclose the illumination area (32), which is used to accommodate the cultivation plate (50).

2. The lighting device according to claim 1, characterized in that, The reflective assembly (31) includes a reflector (311) and an adjustment member (312). One end of the adjustment member (312) is connected to the cavity wall of the receiving cavity (11), and the other end of the adjustment member (312) is connected to the reflector (311). The adjustment member (312) is used to adjust the angle between the reflector (311) and the plane in the vertical direction to change the illumination range of the illumination area (32). The reflector (311) is constructed in a trapezoidal shape, and the cross-sectional area of ​​the reflector (311) gradually increases from top to bottom.

3. The lighting device according to claim 2, characterized in that, The reflective assembly (31) also includes a connecting rod (313), and the adjusting component (312) includes an adjusting disc (3121), a rotating disc (3122), and a limiting rod (3123). The adjusting disk (3121) is disposed on the cavity wall of the receiving cavity (11), and a plurality of through holes (3126) are formed on the adjusting disk (3121), and the plurality of through holes (3126) are arranged at intervals along the circumference of the adjusting disk (3121); One end of the connecting rod (313) is connected to the reflector (311), and the other end of the connecting rod (313) is connected to the rotating disk (3122). The rotating disk (3122) is rotatably connected to the adjusting disk (3121), and the limiting rod (3123) is movably mounted on the adjusting disk (3121) so as to be inserted into or disengaged from the through hole (3126) located on one side of the adjusting disk (3121).

4. The lighting device according to claim 3, characterized in that, The adjusting member (312) also includes a receiving shell (3127); The receiving shell (3127) is disposed on the side of the rotating disk (3122) away from the adjusting disk (3121). The limiting rod (3123) is movably inserted through the receiving shell (3127) and the rotating disk (3122). The end of the limiting rod (3123) away from the rotating disk (3122) protrudes outward from the receiving shell (3127) and forms an operating part (3128).

5. The lighting device according to claim 4, characterized in that, The adjusting member (312) further includes an elastic member (3129), which is located on the receiving shell (3127) and sleeved on the limiting rod (3123). The first end of the elastic member (3129) is connected to the limiting rod (3123), and the second end of the elastic member (3129) is connected to the inner wall of the receiving shell (3127).

6. The lighting device according to claim 5, characterized in that, The limiting rod (3123) includes a rod segment (3124) and a protrusion (3125) that protrudes radially outward from the rod segment (3124). The elastic element (3129) is sleeved on the rod segment (3124), and the first end of the elastic element (3129) is connected to the protrusion (3125).

7. The lighting device according to claim 1, characterized in that, The lighting device also includes a bracket (60) and multiple support columns (70). The housing (10) has a first open end and a second open end opposite to each other; The bracket (60) is provided on the first open end, and the lighting lamp (20) is used to hang on the bracket (60); The plurality of support columns (70) are arranged circumferentially at intervals along the second open end, the first end of the plurality of support columns (70) is installed at the second open end, and the second end of the plurality of support columns (70) is used to connect with the worktable (40) so that the housing (10) is suspended on the worktable (40).

8. The lighting device according to claim 7, characterized in that, The lighting device also includes a sealing cover; The sealing cover has a cavity for accommodating the housing (10), the bracket (60), the support column (70), and the lighting lamp (20). The sealing cover has an opening communicating with the cavity, and the sealing cover faces the housing (10), the bracket (60), the support column (70), and the lighting lamp (20) through the opening. The sealing cover is provided with ventilation holes.

9. The lighting device according to claim 8, characterized in that, The sealing cover is made of transparent material.

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