Eye protection lamp with auxiliary lamp

By designing the eye protection lamp of the rotatable second lighting unit and the first lighting unit, the problem of single lighting direction of the existing eye protection lamp is solved, and the adjustment of the light intensity of the dark environment and desk is realized, reducing the user's fatigue, and Enhance lighting when needed.

CN222278393UActive Publication Date: 2024-12-31WUHAN CAMBRIDGE TREE TRADING CO LTD
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Patent Information

Application Number
CN202421152126.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-23
Publication Date
2024-12-31
Estimated Expiration
2034-05-23

AI Technical Summary

Technical Problem

The existing eye protection lamps are mainly single light sources, with a single light direction, and cannot effectively adjust the difference in light intensity between the dark environment and the desk, resulting in increased user fatigue.

Method used

An eye protection lamp with auxiliary lamp is designed, including a base, a support rod, a support arm, a first lighting unit and a second lighting unit. The second lighting unit can be rotated and adjusted to the direction of the light emitting plane, and realize the table surface in combination with the first lighting unit. lighting adapts to different environmental needs.

Benefits of technology

By adjusting the luminous plane of the second lighting unit, the difference in light intensity between the dark environment and the desk is reduced, the user's fatigue is reduced, and the desktop lighting effect is enhanced when needed, to adapt to different application scenarios.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an eye protection lamp with an auxiliary lamp, and belongs to the field of lighting equipment. The eye protection lamp comprises a base, a supporting rod, a supporting arm, a first lighting unit and a second lighting unit. The bottom end of the support rod is connected with the base; one end of the support arm is connected with the top end of the support rod; the first lighting unit is located at the other end of the supporting arm, the light-emitting plane of the first lighting unit is arranged downwards, the second lighting unit is of an arc-shaped structure and surrounds one side of the first lighting unit, and at least one end of the second lighting unit is rotatably arranged at the other end of the supporting arm. According to the eye protection lamp with the auxiliary lamp, the light intensity of a dark environment and the light intensity of a corresponding use space of a desk can be kept consistent or the difference value of the light intensity of the dark environment and the light intensity of the corresponding use space of the desk is reduced, the fatigue feeling of a user is reduced, and the illumination intensity and the illumination effect on the desktop can be improved when the desktop environment needs to be intensively illuminated. Therefore, the method adapts to different application scenes.
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Description

Technical Field

[0001] The utility model belongs to the field of lighting equipment, and in particular relates to an eye protection lamp with an auxiliary lamp. Background Art

[0002] As the pace of modern life accelerates, the time spent working and studying at desks is getting longer and longer. If there is no suitable eye protection lamp, it will aggravate eye fatigue and cause other eye diseases. In this context, the demand for eye protection lamps will become higher and higher. In the technical field of eye protection lamps, the research mainly focuses on the light design of the light source and the adjustment of the light direction. In the light design of the light source, light yellow or softer light is usually used to achieve the purpose of eye protection; in the adjustment of the light direction, various steering mechanisms are usually used to achieve the best irradiation angle to protect the eyes.

[0003] At present, eye protection lamps are mainly single light sources with a single lighting direction. When the user is in a dark environment, there is a huge gap in light intensity between the use space corresponding to the desk and the surrounding environment, which can easily cause fatigue. Utility Model Content

[0004] In view of the above defects or improvement needs of the prior art, the utility model provides an eye protection lamp with an auxiliary light, the purpose of which is not only to keep the light intensity of the dark environment and the use space corresponding to the desk consistent or reduce the difference in light intensity between the two, thereby reducing the user's fatigue, but also to increase the lighting intensity and lighting effect of the desktop when a strong lighting desktop environment is required, thereby adapting to different application scenarios.

[0005] To achieve the above-mentioned purpose, the utility model provides an eye protection lamp with an auxiliary lamp, the eye protection lamp comprising a base, a support rod, an arm, a first lighting unit and a second lighting unit;

[0006] The bottom end of the support rod is connected to the base, and one end of the support arm is connected to the top end of the support rod;

[0007] The first lighting unit is located on the other end of the support arm, and the light-emitting plane of the first lighting unit is set downward. The second lighting unit is an arc-shaped structure and is arranged around one side of the first lighting unit. At least one end of the second lighting unit is rotatably arranged on the other end of the support arm, and the rotation axis of the second lighting unit extends along the axial direction of the support arm to flip and adjust the direction of the light-emitting plane of the second lighting unit.

[0008] Optionally, the support rod includes a first rod body and a second rod body, one end of the first rod body is connected to one end of the support arm, the other end of the first rod body is rotatably arranged on one end of the second rod body, and the rotation axis of the first rod body is perpendicular to the axis of the second rod body, and the other end of the second rod body is located on the base.

[0009] Optionally, an outer diameter of the second rod body is greater than an outer diameter of the first rod body.

[0010] Optionally, the first rod body is a rod with adjustable length.

[0011] Optionally, one end of the support arm is rotatably arranged on the top end of the support rod, and the rotation axis of the support arm is perpendicular to the support rod.

[0012] Optionally, the first lighting unit and the second lighting unit each include a frame and a light sheet, the light sheet is inserted into the corresponding frame, and each frame is located on the other end of the support arm.

[0013] Optionally, the frame of the first lighting unit is annular, and the frame of the second lighting unit is semi-annular.

[0014] Optionally, the base has a button, and the button is used to control power on or off of the first lighting unit and the second lighting unit.

[0015] Optionally, the bottom surface of the base has an anti-skid pad, and the anti-skid pad is bonded to the base.

[0016] Optionally, the first lighting unit has a first limit block and a second limit block arranged at intervals on its outer edge, and the second lighting unit is configured such that, when the second lighting unit is in a first state, the light emitting plane of the second lighting unit is set upward, and the bottom surface of the second lighting unit is against the first limit block; when the second lighting unit is in a second state, the light emitting plane of the second lighting unit is set downward, and the bottom surface of the second lighting unit is against the second limit block.

[0017] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0018] In general, compared with the prior art, the above technical solutions conceived by the utility model have the following beneficial effects:

[0019] (1) The embodiment of the utility model provides an eye protection lamp with an auxiliary light, wherein at least one end of the second lighting unit is rotatably arranged on the other end of the support arm, and the rotation axis of the second lighting unit extends along the axial direction of the support arm to flip and adjust the direction of the light-emitting plane of the second lighting unit, thereby conveniently adjusting the direction of the light-emitting plane of the second lighting unit to adapt to different application scenarios. That is, when used in a dark environment, the light-emitting plane of the second lighting unit is flipped to face upwards. At this time, the second lighting unit can achieve the dark environment above (i.e. Figure 1 The first lighting unit realizes the lighting of the use space corresponding to the desk (i.e. Figure 1 The lighting of area B in the middle of the desk can be realized by using the second lighting unit to provide auxiliary lighting for the first lighting unit, thereby making the light intensity of the dark environment and the use space corresponding to the desk consistent or reducing the difference in light intensity between the two, thereby reducing the user's fatigue. In addition, when a strong lighting desktop environment is required, the light-emitting plane of the second lighting unit is flipped to face downward, thereby providing auxiliary lighting for the first lighting unit, thereby increasing the lighting intensity and lighting effect of the desktop.

[0020] (2) The embodiment of the utility model provides an eye protection lamp with an auxiliary lamp, wherein the support rod comprises a first rod body and a second rod body, one end of the first rod body is connected to one end of the support arm, the other end of the first rod body is rotatably arranged on one end of the second rod body, and the rotation axis of the first rod body is perpendicular to the axis of the second rod body, and the other end of the second rod body is located on the base. By rotatably arranging the first rod body on the second rod body, the first rod body can be rotated and then fall down, thereby reducing the height of the support rod, and thus reducing the volume of the entire eye protection lamp, which is convenient for storage or portability.

[0021] Similarly, one end of the support arm is rotatably arranged on the top of the support rod, and the rotation axis of the support arm is perpendicular to the support rod, so that the support arm can be fallen down by rotating the support arm, that is, the support arm, the first lighting unit and the second lighting unit are all rotated in the direction close to the support rod, thereby reducing the volume of the entire eye protection lamp for easy storage.

[0022] (3) The embodiment of the utility model provides an eye protection lamp with an auxiliary lamp, wherein the first lighting unit and the second lighting unit both include a frame and a lamp sheet, the lamp sheet is inserted into the corresponding frame, and each frame is located at the other end of the support. The frame supports and positions the lamp sheet to ensure stable arrangement of the lamp sheet.

[0023] (4) An embodiment of the utility model provides an eye protection lamp with an auxiliary light. When the second lighting unit is in the first state, the light-emitting plane of the second lighting unit is set upward. At this time, the first limit block can achieve horizontal support for the second lighting unit to prevent the second lighting unit from continuing to rotate downward and changing its lighting direction. When the second lighting unit is in the second state, the light-emitting plane of the second lighting unit is set downward. At this time, the second limit block can also achieve horizontal support for the second lighting unit to prevent the second lighting unit from continuing to rotate downward and changing its lighting direction. Therefore, the first limit block and the second limit block both play a role in limiting the second lighting unit, preventing the second lighting unit from continuing to rotate and affecting the direction of its light-emitting plane. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of an eye protection lamp with an auxiliary lamp provided by an embodiment of the utility model;

[0025] Figure 2 It is a structural schematic diagram of a support rod provided by an embodiment of the utility model;

[0026] Figure 3 It is a structural schematic diagram of the support arm provided by an embodiment of the utility model;

[0027] Figure 4 It is a schematic diagram of the structure of the first lighting unit and the second lighting unit provided in an embodiment of the utility model;

[0028] Figure 5 It is a side view of the first lighting unit provided in the embodiment of the utility model.

[0029] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0030] 1. Base; 11. Button; 2. Support rod; 21. First rod body; 22. Second rod body; 23. Ear plate; 3. Support arm; 31. Positioning axis; 32. Rotating axis; 321. Bump; 4. First lighting unit; 5. Second lighting unit; 6. Frame; 7. Light sheet; 8. First limit block; 9. Second limit block. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] Example:

[0037] Figure 1 : is a structural schematic diagram of an eye protection lamp with an auxiliary lamp provided by an embodiment of the utility model, such as Figure 1 As shown, the eye protection lamp includes a base 1, a support rod 2, a support arm 3, a first lighting unit 4 and a second lighting unit 5.

[0038] The bottom end of the support rod 2 is connected to the base 1 , and one end of the support arm 3 is connected to the top end of the support rod 2 .

[0039] The first lighting unit 4 is located on the other end of the support arm 3, and the light-emitting plane of the first lighting unit 4 is arranged downward. The second lighting unit 5 is an arc-shaped structure and is arranged around one side of the first lighting unit 4. At least one end of the second lighting unit 5 is rotatably arranged on the other end of the support arm 3, and the rotation axis of the second lighting unit 5 extends along the axial direction of the support arm 3 to flip and adjust the direction of the light-emitting plane of the second lighting unit 5.

[0040] For the eye protection lamp with auxiliary light provided by the embodiment of the utility model, since at least one end of the second lighting unit 5 is rotatably arranged on the other end of the support arm 3, and the rotation axis of the second lighting unit 5 extends along the axial direction of the support arm 3, the light plane direction of the second lighting unit 5 can be flipped and adjusted, thereby conveniently adjusting the light plane direction of the second lighting unit 5 to adapt to different application scenarios. That is, when used in a dark environment, the light plane of the second lighting unit 5 is flipped to face upwards. At this time, the second lighting unit 5 can achieve the dark environment above (i.e. Figure 1 The first lighting unit 4 realizes the lighting of the use space corresponding to the desk (i.e. Figure 1 The lighting of the area B in the middle of the desk is provided to keep the light intensity of the dark environment and the use space corresponding to the desk consistent or reduce the difference in light intensity between the two, thereby reducing the user's fatigue. In addition, when a strong lighting desktop environment is required, the light-emitting plane of the second lighting unit 5 is turned over to face downward, thereby providing auxiliary lighting for the first lighting unit 4, thereby increasing the lighting intensity and lighting effect of the desktop.

[0041] That is to say, the eye protection lamp with auxiliary light provided by the embodiment of the utility model can not only make the light intensity of the dark environment and the use space corresponding to the desk consistent or reduce the difference in light intensity between the two, thereby reducing the user's fatigue, but also increase the lighting intensity and lighting effect of the desktop when a strong lighting desktop environment is required, thereby adapting to different application scenarios.

[0042] It is easy to understand that since the second lighting unit 5 is an arc-shaped structure and is arranged around one side of the first lighting unit 4, the lighting unit of the entire eye protection lamp is small in size, more compact in structure, has a better auxiliary effect, and is easy to carry and store.

[0043] Figure 2 Schematic diagram of the structure of the support rod provided by the embodiment of the utility model, such as Figure 2As shown, the support rod 2 includes a first rod body 21 and a second rod body 22, one end of the first rod body 21 is connected to one end of the support arm 3, the other end of the first rod body 21 is rotatably arranged on one end of the second rod body 22, and the rotation axis of the first rod body 21 is perpendicular to the axis of the second rod body 22, and the other end of the second rod body 22 is located on the base 1.

[0044] In the above embodiment, the first rod body 21 is rotatably arranged on the second rod body 22, so that the first rod body 21 can fall down after rotation, thereby reducing the height of the support rod 2, and also reducing the volume of the entire eye protection lamp, which is convenient for storage or portability.

[0045] Exemplarily, one side of the top of the second rod body 22 has a notch, and the bottom end of the first rod body 21 is rotatably inserted into the notch through a rotating shaft, and one side edge of the first rod body 21 abuts against the inner wall of the notch, so that the first rod body 21 can only fall to one side, thereby limiting the rotation direction.

[0046] Furthermore, the outer diameter of the second rod body 22 is greater than the outer diameter of the first rod body 21 , thereby increasing the structural strength of the second rod body 22 and achieving reliable support for the first rod body 21 , the first lighting unit 4 and the second lighting unit 5 .

[0047] In one implementation of the present invention, the first rod body 21 is a rod with adjustable length, so as to further reduce the height of the support rod 2, and thus reduce the volume of the entire eye protection lamp, making it easier to store or carry.

[0048] Exemplarily, the first rod body 21 includes an upper section and a lower section arranged coaxially, wherein the lower section is a hollow structure, and the bottom end of the upper section can be slidably inserted into the inner hole of the lower section, so as to adjust the insertion depth of the upper section in the lower section. In addition, a locking bolt is inserted into the lower section, and the locking bolt passes through the lower section and abuts against the outer peripheral wall of the upper section.

[0049] It should be noted that the first rod body 21 can also be configured in other length-adjustable forms, and the present invention does not limit this.

[0050] Figure 3 This is a schematic diagram of the structure of the support arm provided by the embodiment of the utility model, combined with Figure 1 and Figure 3 As shown, one end of the support arm 3 is rotatably arranged on the top end of the support rod 2, and the rotation axis of the support arm 3 is perpendicular to the support rod 2, so that the support arm 3 can be fallen down by rotating the support arm 3, that is, the support arm 3, the first lighting unit 4 and the second lighting unit 5 are all rotated in the direction close to the support rod 2, thereby reducing the volume of the entire eye protection lamp for easy storage.

[0051] Exemplarily, the support arm 3 includes a coaxially connected positioning shaft 31 and a rotating shaft 32, and the outer diameter of the positioning shaft 31 is smaller than that of the rotating shaft 32. A protrusion 321 is provided below the right end of the rotating shaft 32, and two spaced ear plates 23 are provided above the support rod 2, the rotating shaft is inserted on the two ear plates 23, the protrusion 321 is inserted between the two ear plates 23, and the protrusion 321 is rotatably sleeved on the rotating shaft. In addition, the first lighting unit 4 is fixedly sleeved on the positioning shaft 31, and both ends of the second lighting unit 5 are rotatably sleeved on the positioning shaft 31.

[0052] Figure 4 is a schematic diagram of the structure of the first lighting unit and the second lighting unit provided in an embodiment of the utility model, such as Figure 4 As shown, the first lighting unit 4 and the second lighting unit 5 both include a frame 6 and a light sheet 7 . The light sheet 7 is inserted into the corresponding frame 6 , and each frame 6 is located on the other end of the support arm 3 .

[0053] In the above embodiment, the frame 6 supports and positions the light sheet 7, thereby ensuring that the light sheet 7 is stably arranged.

[0054] In one implementation of the present invention, the frame 6 of the first lighting unit 4 may be annular, and the frame 6 of the second lighting unit 5 may be semi-annular. At this time, the corresponding spatial positions of the second lighting unit 5 before and after flipping just form a circle.

[0055] It should be noted that the frame 6 of the first lighting unit 4 and the frame 6 of the second lighting unit 5 are adapted to each other and do not interfere with each other before and after flipping, and the present invention does not impose any limitation on this.

[0056] Exemplarily, the outer diameter of the frame 6 of the first lighting unit 4 is 220 mm, and the outer diameter of the frame 6 of the second lighting unit 5 is 280 mm.

[0057] See again Figure 1 The base 1 has a button 11, which is used to control the power on or off of the first lighting unit 4 and the second lighting unit 5, thereby facilitating the control of the first lighting unit 4 and the second lighting unit 5.

[0058] Furthermore, the bottom surface of the base 1 has an anti-skid pad, which is bonded to the base 1. The protective pad has an anti-skid effect on the base 1, increases friction, and avoids the problem of the base 1 being easy to slide when placed on a desktop.

[0059] For example, a counterweight is inserted into the base 1, and the counterweight can increase the mass of the base 1, thereby increasing its stability and preventing it from moving or turning over. In addition, the base 1 is disc-shaped, and the support rod 2 is inserted near the side of the base 1. The base 1 is arranged parallel to the first lighting unit 4 and spaced apart.

[0060] Figure 5 is a side view of a first lighting unit provided in an embodiment of the utility model, such as Figure 5 As shown, the first lighting unit 4 has a first limit block 8 and a second limit block 9 arranged at intervals on its outer edge, and the second lighting unit 5 is configured such that, when the second lighting unit 5 is in the first state, the light-emitting plane of the second lighting unit 5 is set upward, and the bottom surface of the second lighting unit 5 is abutted against the first limit block 8; when the second lighting unit 5 is in the second state, the light-emitting plane of the second lighting unit 5 is set downward, and the bottom surface of the second lighting unit 5 is abutted against the second limit block 9.

[0061] In the above embodiment, the first limit block 8 and the second limit block 9 both limit the second lighting unit 5 to prevent the second lighting unit 5 from continuing to rotate and affecting the direction of its light-emitting plane.

[0062] For example, when the second lighting unit 5 is in the first state, the light-emitting plane of the second lighting unit 5 is set upward, and the first stopper 8 can support the second lighting unit 5 horizontally, so as to prevent the second lighting unit 5 from rotating further downward and changing its lighting direction. When the second lighting unit 5 is in the second state, the light-emitting plane of the second lighting unit 5 is set downward, and the second stopper 9 can also support the second lighting unit 5 horizontally, so as to prevent the second lighting unit 5 from rotating further downward and changing its lighting direction.

[0063] It is easy for those skilled in the art to understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An eye protection lamp with an auxiliary lamp, characterized in that: The eye protection lamp comprises a base (1), a support rod (2), a support arm (3), a first lighting unit (4) and a second lighting unit (5); The bottom end of the support rod (2) is connected to the base (1), and one end of the support arm (3) is connected to the top end of the support rod (2); The first lighting unit (4) is located on the other end of the support arm (3), and the light-emitting plane of the first lighting unit (4) is arranged downwards; the second lighting unit (5) is an arc-shaped structure, and is arranged around one side of the first lighting unit (4); at least one end of the second lighting unit (5) is rotatably arranged on the other end of the support arm (3), and the rotation axis of the second lighting unit (5) extends along the axial direction of the support arm (3) so as to flip and adjust the direction of the light-emitting plane of the second lighting unit (5).

2. The eye protection lamp with auxiliary lamp according to claim 1, characterized in that: The support rod (2) comprises a first rod body (21) and a second rod body (22); one end of the first rod body (21) is connected to one end of the support arm (3); the other end of the first rod body (21) is rotatably arranged on one end of the second rod body (22); the rotation axis of the first rod body (21) is perpendicular to the axis of the second rod body (22); and the other end of the second rod body (22) is located on the base (1).

3. The eye protection lamp with auxiliary lamp according to claim 2, characterized in that: The outer diameter of the second rod body (22) is greater than the outer diameter of the first rod body (21).

4. The eye protection lamp with auxiliary lamp according to claim 2, characterized in that: The first rod body (21) is a rod with adjustable length.

5. The eye protection lamp with auxiliary lamp according to claim 1, characterized in that: One end of the support arm (3) is rotatably arranged on the top end of the support rod (2), and the rotation axis of the support arm (3) is perpendicular to the support rod (2).

6. The eye protection lamp with auxiliary lamp according to claim 1, characterized in that: The first lighting unit (4) and the second lighting unit (5) both comprise a frame (6) and a light sheet (7); the light sheet (7) is inserted into the corresponding frame (6), and each frame (6) is located on the other end of the support arm (3).

7. The eye protection lamp with auxiliary lamp according to claim 6, characterized in that: The frame (6) of the first lighting unit (4) is annular, and the frame (6) of the second lighting unit (5) is semi-annular.

8. An eye protection lamp with an auxiliary lamp according to any one of claims 1 to 7, characterized in that: The base (1) is provided with a button (11), and the button (11) is used to control the power on or off of the first lighting unit (4) and the second lighting unit (5).

9. An eye protection lamp with an auxiliary lamp according to any one of claims 1 to 7, characterized in that: The bottom surface of the base (1) is provided with an anti-skid pad, and the anti-skid pad is bonded to the base (1).

10. An eye protection lamp with an auxiliary lamp according to any one of claims 1 to 7, characterized in that: The first lighting unit (4) has a first limit block (8) and a second limit block (9) arranged at intervals on its outer edge, and the second lighting unit (5) is configured such that, when the second lighting unit (5) is in a first state, the light emitting plane of the second lighting unit (5) is arranged upwards, and the bottom surface of the second lighting unit (5) abuts against the first limit block (8); and when the second lighting unit (5) is in a second state, the light emitting plane of the second lighting unit (5) is arranged downwards, and the bottom surface of the second lighting unit (5) abuts against the second limit block (9).