Table lamp convenient to use

Abstract

The utility model discloses a desk lamp convenient to use, which comprises a clamping seat used for clamping and fixing, a lamp arm structure which is arranged on the clamping seat and can be rotated and bent at least once on a vertical surface to adjust the height, and a lamp cap which is arranged at the upper end of the lamp arm structure and is used for emitting illumination light, a first lamp arm capable of axially rotating relative to the lamp holder is arranged on the lamp arm structure, a control circuit board used for controlling the lamp holder to work and a touch display screen electrically connected with the control circuit board are arranged on the surface of the first lamp arm, and the orientation of the touch display screen is adjusted by axially rotating the first lamp arm. During use, due to the fact that the first lamp arm can axially rotate relative to the lamp holder, a user can rotate the first lamp arm by himself when the lamp holder is not rotated or the relative position of the lamp holder is not adjusted, then the orientation of the touch display screen is controlled and adjusted, the operation requirements of different users are met, and use is quite convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of lamp products, in particular to a convenient-to-use table lamp. Background Art

[0002] A table lamp is a commonly used movable lighting fixture, which consists of a lamp head, a lamp pole and a base. The lamp pole connects the lamp head and the base, and the lamp head is used to accommodate the light-emitting element to provide light illumination. In order to make it more convenient to use, a rotating joint is usually provided between the lamp head and the lamp pole or between the base and the lamp pole. By rotating the rotating joint, the height and irradiation direction of the table lamp can be adjusted to meet different usage requirements.

[0003] The Chinese utility model with application number 020794194.8 discloses a table lamp rotating joint and a table lamp, the table lamp includes a lamp head, a lamp arm and a lamp stand, at least one of the connection between the lamp head and the lamp arm and the connection between the lamp arm and the lamp stand is provided with a table lamp rotating joint; at the connection, the first sleeve is fixedly connected to one of the two adjacent parts, and the second sleeve is fixedly connected to the other of the two adjacent parts. The rotating joint includes a first sleeve, a second sleeve, a first fastener and a second fastener, the first sleeve and the second sleeve are close to each other in the axial direction and clamped between the first fastener and the second fastener, the second fastener is circumferentially fixedly connected to the second sleeve, and the first sleeve and the second sleeve are spliced ​​to form a rotating channel, the first fastener and the second fastener are connected to each other by the rotating channel and threaded at the connection; the first fastener can rotate relative to the second fastener to clamp or loosen the first sleeve and the second sleeve.

[0004] The above desk lamp has a single function, which is to adjust the height of the lamp head on a vertical plane and achieve the lighting effect with the lamp head. It is impossible to set a control panel / touch screen on the lamp arm, making the adjustment operation of the lamp head brightness inconvenient. The desk lamp disclosed in the Chinese utility model application No. 223115470.1 and the desk lamp with an anti-fracture structure disclosed in the Chinese utility model application No. 223125711.0 both have the above technical problems.

[0005] In view of this, the inventor proposes the following technical solution. Utility Model Content

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a convenient-to-use desk lamp.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions: the easy-to-use desk lamp includes a clamping seat for clamping and fixing, a lamp arm structure installed on the clamping seat and capable of rotating and bending at least once in a vertical plane to adjust the height, and a lamp head installed on the upper end of the lamp arm structure and used for emitting illumination light, the lamp arm structure is provided with a first lamp arm that can rotate axially relative to the lamp head, the surface of the first lamp arm is provided with a control circuit board for controlling the operation of the lamp head and a touch display screen electrically connected to the control circuit board, and the orientation of the touch display screen is adjusted by axially rotating the first lamp arm.

[0008] Furthermore, in the above technical solution, the lamp arm structure includes a first rotating joint that can rotate in a vertical plane, a second lamp arm installed at the upper end of the first rotating joint in an axially rotatable manner, a second rotating joint installed at the upper end of the second lamp arm in an axially rotatable manner and can rotate in a vertical plane, a third lamp arm installed at the upper end of the second rotating joint in an axially rotatable manner and can rotate in a vertical plane, a third rotating joint installed at the upper end of the third lamp arm in an axially rotatable manner and can rotate in a vertical plane, and the first lamp arm installed at the upper end of the third rotating joint in an axially rotatable manner and can rotate in a vertical plane.

[0009] Furthermore, in the above technical solution, an axially rotatable assembly is formed between the third rotating joint and the first lamp arm via a second axial rotating structure; an axially rotatable assembly is formed between the first lamp arm and the lamp head via a first axial rotating structure, so that the first lamp arm can independently rotate axially relative to the third rotating joint and the lamp head.

[0010] Furthermore, in the above technical solution, the first axial rotation structure includes a first bolt, a first connecting plate and a second connecting plate which are sleeved on the first bolt and fit together, and a nut which is screwed on the first bolt to fasten the first connecting plate and the second connecting plate together, and a plurality of first gaskets are arranged between the nut and the second connecting plate, wherein the second connecting plate is fixed to the upper end of the first lamp arm by a first screw, and the first connecting plate is fixed to the lower end of the lamp holder by a second screw.

[0011] Further, in the above technical solution, the lower end of the lamp holder is provided with a first receiving groove for accommodating the first connecting piece, and the bottom of the first receiving groove is provided with a first thread groove for spirally fixing with the second screw, and the first connecting piece is provided with a first through hole for the second screw to pass through; the first connecting piece is embedded in the first receiving groove, the first through hole corresponds to the first thread groove, and the second screw is spirally fixed to the first thread groove after passing through the first through hole; the first lamp arm end is provided with a second receiving groove for accommodating the second connecting piece, and the bottom of the second receiving groove is provided with a second thread groove for spirally fixing with the first screw, and the second connecting piece is provided with a second through hole for the first screw to pass through; the second connecting piece is embedded in the second receiving groove, the second through hole corresponds to the second thread groove, and the first screw is spirally fixed to the second thread groove after passing through the second through hole;

[0012] Furthermore, in the above technical solution, the lower end of the lamp holder is flat, the first lamp arm is flat, the outer surface of the first lamp arm is smoothly connected with the outer surface of the lower end of the lamp holder, and the first screw and the second screw are blocked by the first lamp arm or the lower end of the lamp holder; when the first lamp arm is rotated 90 degrees relative to the lower end of the lamp holder, the first screw and the second screw are both exposed and not blocked by the first lamp arm or the lower end of the lamp holder.

[0013] Furthermore, in the above technical scheme, an axially rotatable assembly is formed between the first rotating joint and the second lamp arm through the third axial rotating structure; an axially rotatable assembly is formed between the second lamp arm and the second rotating joint through the fourth axial rotating structure; an axially rotatable assembly is formed between the second rotating joint and the third lamp arm through the fifth axial rotating structure; an axially rotatable assembly is formed between the third lamp arm and the third rotating joint through the sixth axial rotating structure; the second axial rotating structure, the third axial rotating structure, the fourth axial rotating structure, the fifth axial rotating structure, and the sixth axial rotating structure are all the same as the assembly structure of the first axial rotating structure.

[0014] Furthermore, in the above technical solution, a human body sensor for detecting or sensing a human body is also provided on the first lamp arm. The human body sensor is electrically connected to the control circuit board. When the human body sensor leaves the sensing area, the human body sensor and the control circuit board cooperate to control the lamp head to turn off the light.

[0015] Furthermore, in the above technical solution, the clamping seat includes a frame in the shape of a semi-square frame, a first screw rod spirally inserted into the frame body, a handle arranged at the lower end of the first screw rod and vertically distributed with the first screw rod, and a pressure plate fixed to the upper end of the first screw rod and placed in the frame body, and a clamping space is formed between the upper end surface of the pressure plate and the upper inner wall of the frame body; wherein, a screw hole is arranged at the lower part of the frame body, and the upper end of the first screw rod spirally passes through the screw hole to extend into the frame body; and a rubber pad is also arranged on the upper inner wall of the frame body.

[0016] Furthermore, in the above technical solution, an axial rotation joint is also provided behind the upper end of the clamping seat and the lower end of the lamp arm structure, and the axial rotation joint includes an outer gear ring arranged on the clamping seat, a rotating seat arranged on the outer periphery of the outer gear ring and placed on the upper surface of the clamping seat, a convex tooth installed in the rotating seat through a spring and engageable with the tooth portion of the outer periphery of the outer gear ring, a cover plate arranged on the upper end of the rotating seat and inlaid with the outer gear ring for positioning, and a fixing part for fixing the cover plate to the rotating seat, the convex tooth engages with the tooth portion of the outer periphery of the outer gear ring under the elastic force of the spring, and the rotating seat is fixedly connected to the lower end of the lamp arm structure.

[0017] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: when the utility model is used specifically, the operation of the lamp head can be controlled through the touch display screen, and the working data of the lamp head can also be displayed on the touch display screen, which is extremely convenient to use. Moreover, since the first lamp arm can rotate axially relative to the lamp head, the user can rotate the first lamp arm by himself without rotating the lamp head or adjusting the relative position of the lamp head, thereby controlling and adjusting the direction of the touch display screen to meet the operating requirements of different users, which is extremely convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2 It is a stereogram of another viewing angle of the utility model;

[0020] Figure 3 It is an assembly diagram of the lamp holder and the first axial rotation structure in the utility model;

[0021] Figure 4 It is a three-dimensional diagram of the first axial rotation structure in the utility model;

[0022] Figure 5 It is a three-dimensional diagram of the first axial rotation structure in the utility model from another perspective;

[0023] Figure 6 It is a three-dimensional exploded view of the first axial rotation structure in the utility model;

[0024] Figure 7 It is an assembly diagram of the clamping seat and the axial rotation joint in the utility model;

[0025] Figure 8 It is an assembly diagram of the clamping seat and the axial rotation joint in the utility model from another perspective;

[0026] Fig. 9 This is the internal assembly diagram of the clamping seat and the axial rotation joint in the utility model;

[0027] Fig.10This is an assembly exploded view of the clamping seat and the axial rotation joint in the utility model;

[0028] Fig.11 It is an assembly diagram of the control circuit board and the touch display screen in the utility model;

[0029] Fig.12 It is a three-dimensional diagram of the cover plate in the utility model. DETAILED DESCRIPTION

[0030] The utility model is further described below in conjunction with specific embodiments and drawings.

[0031] See Figure 1-12 As shown, a convenient-to-use desk lamp comprises a clamping base 1 for clamping and fixing, a lamp arm structure 2 installed on the clamping base 1 and capable of rotating and bending at least once in a vertical plane to adjust the height, and a lamp head 3 installed on the upper end of the lamp arm structure 2 and used for emitting illumination light. When in actual use, the clamping base 1 is clamped and fixed to a table top or other objects so that the clamp-type desk lamp is fixed in a required working position (such as a desk, etc.), and the lamp head 3 is adjusted in height by rotating and bending the lamp arm structure 2, so that the lamp head 3 is moved to the optimal position to achieve lighting, which is a conventional technical means in the field.

[0032] In order to make the use more convenient, the utility model also adds the following structure: the lamp arm structure 2 is provided with a first lamp arm 21 that can rotate axially relative to the lamp head, and the surface of the first lamp arm 21 is provided with a control circuit board 211 for controlling the operation of the lamp head 3 and a touch screen 212 electrically connected to the control circuit board 211, and the direction of the touch screen 212 can be adjusted by axially rotating the first lamp arm 21. In specific use, the operation of the lamp head 3 can be controlled by the touch screen 212, and the working data of the lamp head can also be displayed by the touch screen 212, which is extremely convenient to use, and because the first lamp arm 21 can rotate axially relative to the lamp head, the user can rotate the first lamp arm 21 by himself without rotating the lamp head 3 or adjusting the relative position of the lamp head 3, and then control and adjust the direction of the touch screen 212 to meet the operation requirements of different users, which is extremely convenient to use.

[0033] On this basis, the first lamp arm 21 is also provided with a human body sensor 210 for detecting or sensing a human body. The human body sensor 210 is electrically connected to the control circuit board 211. When the human body sensor 210 leaves the sensing area, the human body sensor 210 and the control circuit board 211 cooperate to control the lamp head 3 to turn off the light. In other words, under the premise that the user can control the lamp head 3 to work through the touch display screen 212, the human body sensor 210 can also be used to sense whether the human body is in the sensing area. When the human body is not in the sensing area, the human body sensor 210 and the control circuit board 211 cooperate to control the lamp head 3 to turn off the light, thereby achieving the effect of turning off the light when the person leaves. Among them, the human body sensor 210 is a conventional technical product. The technology of the human body sensor 210 sensing whether the human body is in the sensing area and then controlling the on and off of the lamp is a conventional technology, which will not be repeated here.

[0034] In addition, since the human body sensor 210 is set on the first lamp arm 21, the user can rotate the first lamp arm 21 by himself without rotating the lamp head 3 or adjusting the relative position of the lamp head 3, and then control and adjust the direction of the human body sensor 210 to meet the operating needs of different users, which is extremely convenient to use.

[0035] The specific structure of the lamp arm structure 2 is described in detail below.

[0036] The lamp arm structure 2 includes a first rotating joint 22 that can rotate in a vertical plane, a second lamp arm 23 that is axially rotatably mounted on the upper end of the first rotating joint 22, a second rotating joint 24 that is axially rotatably mounted on the upper end of the second lamp arm 23 and can rotate in a vertical plane, a third lamp arm 25 that is axially rotatably mounted on the upper end of the second rotating joint 24 and can rotate in a vertical plane, a third rotating joint 26 that is axially rotatably mounted on the upper end of the third lamp arm 25 and can rotate in a vertical plane, and the first lamp arm 21 that is axially rotatably mounted on the upper end of the third rotating joint 26 and can rotate in a vertical plane. The second lamp arm 23, the third lamp arm 25, and the first lamp arm 21 can be rotated in a vertical plane through the first rotating joint 22, the second rotating joint 24, and the third rotating joint 26, respectively, to adjust the height or position of the lamp head 3.

[0037] In addition, the third rotating joint 26 and the first lamp arm 21 form an axially rotatable assembly through the second axial rotating structure 28; the first lamp arm 21 and the lamp head 3 form an axially rotatable assembly through the first axial rotating structure 27, so that the first lamp arm 21 can independently rotate axially relative to the third rotating joint 26 and the lamp head 3. The first rotating joint 22 and the second lamp arm 23 form an axially rotatable assembly through the third axial rotating structure; the second lamp arm 23 and the second rotating joint 24 form an axially rotatable assembly through the fourth axial rotating structure; the second rotating joint 24 and the third lamp arm 25 form an axially rotatable assembly through the fifth axial rotating structure; the third lamp arm 25 and the third rotating joint 26 form an axially rotatable assembly through the sixth axial rotating structure 204; the second lamp arm 23 and the third lamp arm 25 can also be relatively independently axially rotated, so that the lamp arm structure 2 can rotate on multiple vertical planes to adjust the height or position of the lamp head 3, which is more convenient to use in a wider range of directions.

[0038] Among them, the first axial rotation structure 27 includes a first bolt 271, a first connecting piece 272 and a second connecting piece 273 which are sleeved on the first bolt 271 and fit together, and a nut 274 which is screwed on the first bolt 271 to fasten the first connecting piece 272 and the second connecting piece 273 together, and a plurality of first gaskets 275 are arranged between the nut 274 and the second connecting piece 273, wherein the second connecting piece 273 is fixed to the upper end of the first lamp arm 21 by a first screw, and the first connecting piece 272 is fixed to the lower end of the lamp holder 3 by a second screw, and the first axial rotation structure 27 is extremely simple in structure and easy to install. The specific assembly structure is as follows: the lower end of the lamp holder 3 is provided with a first receiving groove 31 for accommodating the first connecting piece 272, and the bottom of the first receiving groove 31 is provided with a first thread groove for screwing with the second screw, and the first connecting piece 272 is provided with a first through hole 2721 for the second screw to pass through; the first connecting piece 272 is embedded in the first receiving groove 31, and the first through hole 2721 corresponds to the first thread groove, and the second screw is screwed and fixed to the first thread groove after passing through the first through hole 2721; the end of the first lamp arm 21 is provided with a second receiving groove for accommodating the second connecting piece 273, and the bottom of the second receiving groove is provided with a second thread groove for screwing with the first screw, and the second connecting piece 273 is provided with a second through hole 2731 for the first screw to pass through; the second connecting piece 273 is embedded in the second receiving groove, and the second through hole 2731 corresponds to the second thread groove, and the first screw is screwed and fixed to the second thread groove after passing through the second through hole 2731;

[0039] The lower end of the lamp holder 3 is flat, and the first lamp arm 21 is flat. The outer surface of the first lamp arm 21 is smoothly connected with the outer surface of the lower end of the lamp holder 3, and the first screw and the second screw are blocked by the first lamp arm 21 or the lower end of the lamp holder 3; when the first lamp arm 21 is rotated 90 degrees relative to the lower end of the lamp holder 3, the first screw and the second screw are exposed and not blocked by the first lamp arm 21 or the lower end of the lamp holder 3, thereby facilitating the disassembly and assembly of the first screw and the second screw, and further facilitating the disassembly and assembly of the entire first axial rotation structure 27.

[0040] The second axial rotation structure 28 , the third axial rotation structure, the fourth axial rotation structure, the fifth axial rotation structure, and the sixth axial rotation structure 204 all have the same assembly structure as the first axial rotation structure 27 , and are not described in detail herein.

[0041] The clamping seat 1 includes a frame 11 in the shape of a semi-square frame, a first screw rod 12 spirally inserted in the frame 11, a handle 13 arranged at the lower end of the first screw rod 12 and vertically distributed with the first screw rod 12, and a pressure plate 14 fixed at the upper end of the first screw rod 12 and placed in the frame 11, a clamping space is formed between the upper end surface of the pressure plate 14 and the upper inner wall of the frame 11, so that the clamping seat 1 can be mounted on an object such as a table top through the clamping space between the upper end surface of the pressure plate 14 and the upper inner wall of the frame 11, and finally the handle 13 is twisted in the reverse direction to drive the first screw rod 12 to spirally rotate, so that the pressure plate 14 rises and the clamping space becomes smaller, thereby clamping the clamping seat 1 on an object such as a table top, and its operation is extremely convenient. A screw hole 110 is disposed at the lower portion of the frame body 11 , and the upper end of the first screw rod 12 screws through the screw hole 110 to extend into the frame body 11 .

[0042] The inner wall of the frame 11 is also provided with a rubber pad 16 to increase friction and prevent the frame 11 from scratching / wearing the surface of the table top.

[0043] An axial rotation joint 5 is also provided between the upper end of the clamping seat 1 and the lower end of the lamp arm structure 2, so that the lamp arm structure 2 can realize a large-angle rotation on the clamping seat 1 through the axial rotation joint 5, thereby increasing the adjustment range of the lamp head 3 to meet different lighting needs, so that the entire desk lamp will not be affected by the clamping installation position of the clamping seat 1 during use.

[0044] The axial rotation joint 5 includes an outer gear ring 51 arranged on the clamping seat 1, a rotating seat 52 sleeved on the outer periphery of the outer gear ring 51 and placed on the upper surface of the clamping seat 1, a convex tooth 54 movably installed in the rotating seat 52 through a spring 53 and capable of meshing with the teeth on the outer periphery of the outer gear ring 51, a cover plate 55 covered on the upper end of the rotating seat 52 and embedded in the outer gear ring 51, and a fixing member 56 for fixing the cover plate 55 on the rotating seat 52. The convex tooth 54 meshes with the teeth on the outer periphery of the outer gear ring 51 under the elastic force of the spring 53, and the rotating seat 52 is fixedly connected to the lower end of the lamp arm structure 2. Among them, a first positioning hole 511 is set in the middle of the outer gear ring 51, and the cover plate 55 is relatively provided with a first positioning column 551, and the first positioning column 551 is embedded and fixed in the first positioning hole 511, thereby further ensuring that the outer gear ring 51 is more stably installed on the clamping seat 1. In addition, a plurality of second positioning columns are also set on the lower end surface of the outer gear ring 51, and the second positioning columns are embedded and fixed in the second positioning holes on the clamping seat 1, thereby further ensuring that the outer gear ring 51 is more stably installed on the clamping seat 1, so that the outer gear ring 51 cannot rotate relative to the clamping seat 1.

[0045] The fixing member 56 includes a screw 562 and a screw barrel 561 which are screw-fixed to each other. The screw 562 is passed through the upper end of the clamping seat 1 , and the screw barrel 561 is pressed on the cover plate 55 .

[0046] During specific use, when the rotating seat 52 rotates relative to the clamping seat 1, the convex tooth 54 will be retracted when it moves from one tooth portion on the periphery of the outer gear ring 51 to the next tooth portion, thereby compressing the spring 53. When it rotates to a predetermined position, the convex tooth 54 engages with the tooth portion on the periphery of the outer gear ring 51 under the elastic force of the spring 53, thereby ensuring that the rotating seat 52 is relatively positioned with the outer gear ring 51, thereby ensuring that the rotating seat 52 is fixed on the clamping seat 1.

[0047] To sum up, when the utility model is used in practice, it is possible to control the operation of the lamp head 3 through the touch screen 212, and the working data of the lamp head can also be displayed by the touch screen 212, which is extremely convenient to use. Moreover, since the first lamp arm 21 can rotate relative to the axial direction of the lamp head, the user can rotate the first lamp arm 21 by himself without rotating the lamp head 3 or adjusting the relative position of the lamp head 3, thereby controlling and adjusting the direction of the touch screen 212 to meet the operating requirements of different users, which is extremely convenient to use.

[0048] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A convenient table lamp, comprising a clamping seat (1) for clamping and fixing, a lamp arm structure (2) mounted on the clamping seat (1) and capable of rotating and bending at least once in a vertical plane to adjust the height, and a lamp head (3) mounted on the upper end of the lamp arm structure (2) and used for emitting illuminating light, characterized in that: The lamp arm structure (2) is provided with a first lamp arm (21) that can be axially rotated relative to the lamp head (3); a control circuit board (211) for controlling the operation of the lamp head (3) and a touch display screen (212) electrically connected to the control circuit board (211) are provided on the surface of the first lamp arm (21); the orientation of the touch display screen (212) is adjusted by axially rotating the first lamp arm (21).

2. The convenient table lamp according to claim 1, characterized in that: The lamp arm structure (2) comprises a first rotating joint (22) rotatable in a vertical plane, a second lamp arm (23) mounted on the upper end of the first rotating joint (22) in an axially rotatable manner, a second rotating joint (24) mounted on the upper end of the second lamp arm (23) in an axially rotatable manner and rotatable in a vertical plane, a third lamp arm (25) mounted on the upper end of the second rotating joint (24) in an axially rotatable manner and rotatable in a vertical plane, a third rotating joint (26) mounted on the upper end of the third lamp arm (25) in an axially rotatable manner and rotatable in a vertical plane, and the first lamp arm (21) mounted on the upper end of the third rotating joint (26) in an axially rotatable manner and rotatable in a vertical plane.

3. The convenient table lamp according to claim 2, characterized in that: The third rotating joint (26) and the first lamp arm (21) form an axially rotatable assembly via a second axial rotating structure (28); the first lamp arm (21) and the lamp holder (3) form an axially rotatable assembly via a first axial rotating structure (27), so that the first lamp arm (21) can independently axially rotate relative to the third rotating joint (26) and the lamp holder (3).

4. The convenient table lamp according to claim 3, characterized in that: The first axial rotation structure (27) comprises a first bolt (271), a first connecting piece (272) and a second connecting piece (273) which are sleeved on the first bolt (271) and fit together, and a nut (274) which is screwed on the first bolt (271) to fasten the first connecting piece (272) and the second connecting piece (273) together, and a plurality of first gaskets (275) are arranged between the nut (274) and the second connecting piece (273), wherein the second connecting piece (273) is fixed to the upper end of the first lamp arm (21) by a first screw, and the first connecting piece (272) is fixed to the lower end of the lamp holder (3) by a second screw.

5. The convenient table lamp according to claim 4, characterized in that: The lower end of the lamp holder (3) is provided with a first receiving groove (31) for receiving the first connecting piece (272), and the bottom of the first receiving groove (31) is provided with a first thread groove for screw-fixing with the second screw, and the first connecting piece (272) is provided with a first through hole (2721) for the second screw to pass through; the first connecting piece (272) is embedded in the first receiving groove (31), the first through hole (2721) corresponds to the first thread groove, and the second screw passes through the first through hole (2721) and is screwed into the first thread groove. Screw-fixed; a second receiving groove for receiving the second connecting piece (273) is provided at the end of the first lamp arm (21), and a second thread groove for screw-fixing with the first screw is provided at the bottom of the second receiving groove, and the second connecting piece (273) is provided with a second through-hole (2731) for the first screw to pass through; the second connecting piece (273) is embedded in the second receiving groove, the second through-hole (2731) corresponds to the second thread groove, and the first screw passes through the second through-hole (2731) and is screw-fixed with the second thread groove.

6. The user-friendly desk lamp according to claim 5, characterized in that: The lower end of the lamp holder (3) is flat, the first lamp arm (21) is flat, the outer surface of the first lamp arm (21) is smoothly butted against the outer surface of the lower end of the lamp holder (3), and the first screw and the second screw are blocked by the first lamp arm (21) or the lower end of the lamp holder (3); when the first lamp arm (21) is rotated 90 degrees relative to the lower end of the lamp holder (3), the first screw and the second screw are exposed and are not blocked by the first lamp arm (21) or the lower end of the lamp holder (3).

7. The user-friendly desk lamp according to claim 5, characterized in that: An axially rotatable assembly is formed between the first rotating joint (22) and the second lamp arm (23) via a third axial rotating structure; an axially rotatable assembly is formed between the second lamp arm (23) and the second rotating joint (24) via a fourth axial rotating structure; an axially rotatable assembly is formed between the second rotating joint (24) and the third lamp arm (25) via a fifth axial rotating structure; an axially rotatable assembly is formed between the third lamp arm (25) and the third rotating joint (26) via a sixth axial rotating structure (204); the second axial rotating structure (28), the third axial rotating structure, the fourth axial rotating structure, the fifth axial rotating structure and the sixth axial rotating structure (204) all have the same assembly structure as the first axial rotating structure (27).

8. A convenient table lamp according to any one of claims 1 to 7, characterized in that: The first lamp arm (21) is also provided with a human body sensor (210) for detecting or sensing a human body. The human body sensor (210) is electrically connected to a control circuit board (211). When the human body sensor (210) leaves the sensing area, the human body sensor (210) and the control circuit board (211) cooperate to control the lamp head (3) to turn off the light.

9. A convenient table lamp according to any one of claims 1 to 7, characterized in that: The clamping seat (1) comprises a frame (11) in the shape of a semi-square frame, a first screw (12) spirally inserted into the frame (11), a handle (13) arranged at the lower end of the first screw (12) and vertically distributed with the first screw (12), and a pressure plate (14) fixed to the upper end of the first screw (12) and placed in the frame (11), wherein a clamping space is formed between the upper end surface of the pressure plate (14) and the upper inner wall of the frame (11); wherein a screw hole is arranged at the lower part of the frame (11), and the upper end of the first screw (12) spirally passes through the screw hole to extend into the frame (11); and a rubber pad (16) is also arranged on the upper inner wall of the frame (11).

10. A convenient table lamp according to any one of claims 1 to 7, characterized in that: An axial rotation joint (5) is also provided behind the upper end of the clamping seat (1) and the lower end of the lamp arm structure (2). The axial rotation joint (5) comprises an outer gear ring (51) provided on the clamping seat (1), a rotating seat (52) sleeved on the outer periphery of the outer gear ring (51) and placed on the upper surface of the clamping seat (1), a convex tooth (54) movably mounted in the rotating seat (52) through a spring (53) and capable of meshing with the outer teeth of the outer gear ring (51), a cover plate (55) provided on the upper end of the rotating seat (52) and embedded in the outer gear ring (51) for positioning, and a fixing member (56) for fixing the cover plate (55) to the rotating seat (52). The convex tooth (54) meshes with the outer teeth of the outer gear ring (51) under the elastic force of the spring (53). The rotating seat (52) is fixedly connected to the lower end of the lamp arm structure (2).

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