A telescoping adjustable lamp stand

Abstract

The utility model relates to a telescopic regulation's lamp stand, including base subassembly, support pipe subassembly, drive subassembly and transmission component, support pipe subassembly and base subassembly fixed connection, still be equipped with the lamp holder for connecting lamps and lanterns on support pipe subassembly, transmission component sets up in support pipe subassembly, transmission component sets up on base subassembly, support pipe subassembly includes support outer tube and support inner tube, support inner tube sets up in support outer tube, support outer tube and base subassembly fixed connection, the lamp holder sets up on support inner tube, transmission component and support inner tube are connected, and drive subassembly is used for driving transmission component rotation. The utility model discloses the design, can drive support inner tube realizes telescopic movement on support outer tube, effectively solves the problem that lamp stand often needs manual disassembly and reassembles multiple pipe sections in the adjustment process, and the operation is complicated and time -consuming.

Description

Technical Field

[0001] This utility model relates to the field of lighting device technology, and in particular to a telescopic and adjustable lamp holder. Background Technology

[0002] Lighting stands, as devices for supporting and fixing lighting fixtures, are widely used in various fields such as photography, videography, stage lighting, and everyday home lighting. Existing lighting stand products typically have a fixed length or employ a simple segmented plug-in design to achieve limited height adjustment.

[0003] However, such light stands often require manual disassembly and reassembly of multiple tube sections during adjustment, which is cumbersome and time-consuming. Furthermore, the segmented, plug-in structure is prone to loosening after frequent use, leading to decreased overall stability and potential safety hazards. Additionally, fixed-length light stands or those with limited adjustment ranges struggle to meet the precise height requirements of complex and ever-changing shooting or lighting scenarios. Therefore, existing light stand products suffer from structural problems such as inconvenient adjustment, insufficient stability, and poor adaptability. Utility Model Content

[0004] The purpose of this utility model is to provide a telescopic and adjustable lamp holder to solve the problems of cumbersome adjustment operation, insufficient connection stability and poor height adaptability caused by the fixed structure or segmented plug-in design of existing lamp holder products.

[0005] This utility model provides the following technical solution: a telescopic and adjustable lamp holder, including a base assembly, a support tube assembly, a drive assembly, and a transmission assembly. The support tube assembly and the base assembly are fixedly connected. The support tube assembly is also provided with a lamp holder for connecting a lamp. The transmission assembly is disposed inside the support tube assembly and on the base assembly. The support tube assembly includes an outer support tube and an inner support tube. The inner support tube is disposed inside the outer support tube. The outer support tube and the base assembly are fixedly connected. The lamp holder is disposed on the inner support tube. The transmission assembly is connected to the inner support tube. The drive assembly is used to drive the transmission assembly to rotate.

[0006] Preferably, the transmission assembly includes a lead screw, a transmission sleeve, and a bearing. The lead screw is rotatably connected to the outer support tube via the bearing. The transmission sleeve is fixedly connected to the inner support tube. The lead screw is connected to the transmission sleeve. The bottom end of the lead screw is fixedly connected to the drive assembly.

[0007] Preferably, the drive assembly includes an adjustment knob, a drive gear, and a driven gear. The adjustment knob is rotatably connected to the base assembly, the adjustment knob is fixedly connected to the drive gear, the drive gear and the driven gear are meshed together, and the driven gear and the lead screw are fixedly connected.

[0008] Preferably, a guide structure is further provided between the outer support tube and the inner support tube. The guide structure includes a guide protrusion and a guide groove, the guide protrusion and the guide groove are matched, the guide protrusion is disposed on the inner sidewall of the outer support tube, and the guide groove is disposed on the outer sidewall of the inner support tube, or the guide groove is disposed on the inner sidewall of the outer support tube and the guide protrusion is disposed on the outer sidewall of the inner support tube.

[0009] Preferably, the drive assembly is provided with a limiting structure, the limiting structure including a ratchet, a pawl, a pawl fixing block and an elastic element, the ratchet and the adjustment knob are fixedly connected, the pawl and the ratchet are matched, the pawl fixing block and the base assembly are fixedly connected, the pawl is disposed on the pawl fixing block, one end of the elastic element is fixedly connected to the pawl, and the other end of the elastic element is fixedly connected to the pawl fixing block.

[0010] Preferably, the pawl is provided with an actuating lever, and the base assembly is provided with an actuating groove, wherein the actuating lever and the actuating groove are matched.

[0011] Preferably, an additional tube is provided inside the inner support tube, and a locking component is also provided on the inner support tube. The lamp holder and the additional tube are fixedly connected or integrally formed.

[0012] Preferably, the locking assembly includes a contraction joint and a locking ring, the contraction joint being disposed on the inner support tube, the locking ring being matched with the inner support tube, and the inner side of the locking ring being provided with a slope.

[0013] Preferably, a connecting seat is further provided between the base assembly and the supporting outer tube, and the supporting outer tube is fixedly connected to the base assembly through the connecting seat.

[0014] Preferably, the base assembly has leveling feet at the bottom, with at least three sets of leveling feet. Each leveling foot also has an adjusting screw, and the bottom of the adjusting screw has a support block. The support block and the adjusting screw are fixedly connected or integrally formed.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model discloses a telescopic and adjustable lamp holder, comprising a base assembly, a support tube assembly, a drive assembly, and a transmission assembly. The support tube assembly and the base assembly are fixedly connected. The support tube assembly is also provided with a lamp holder for connecting the lamp. The transmission assembly is disposed inside the support tube assembly and on the base assembly. The support tube assembly includes an outer support tube and an inner support tube, with the inner support tube disposed inside the outer support tube. The outer support tube and the base assembly are fixedly connected. The lamp holder is disposed on the inner support tube. The transmission assembly is connected to the inner support tube. The drive assembly drives the transmission assembly to achieve telescopic movement of the inner support tube on the outer support tube, effectively solving the problem that lamp holders often require manual disassembly and reassembly of multiple tube sections during adjustment, which is cumbersome and time-consuming.

[0016] 2. The telescopic adjustable lamp holder of this utility model includes a transmission component comprising a lead screw, a transmission sleeve, and a bearing. The lead screw is rotatably connected to the outer support tube via the bearing, and the transmission sleeve is fixedly connected to the inner support tube. The lead screw and the transmission sleeve are connected, and the bottom end of the lead screw is fixedly connected to the drive component. The drive component drives the lead screw to rotate, and the lead screw drives the transmission sleeve to move up and down on the lead screw. Since the transmission sleeve is fixedly connected to the inner support tube, it drives the inner support tube to move up and down within the outer support tube.

[0017] 3. The telescopic adjustable lamp holder of this utility model includes a drive assembly comprising an adjustment knob, a driving gear, and a driven gear. The adjustment knob is rotatably connected to the base assembly, the adjustment knob is fixedly connected to the driving gear, the driving gear and the driven gear are meshed together, and the driven gear is fixedly connected to a lead screw. The user rotates the adjustment knob, which drives the driving gear to rotate, which in turn drives the driven gear to rotate, and the driven gear drives the lead screw to rotate.

[0018] 4. The telescopic adjustable lamp holder of this utility model also includes a guide structure between the outer supporting tube and the inner supporting tube. The guide structure includes a guide protrusion and a guide groove, which are matched. The guide protrusion is located on the inner side wall of the outer supporting tube, and the guide groove is located on the outer side wall of the inner supporting tube, or the guide groove is located on the inner side wall of the outer supporting tube, and the guide protrusion is located on the outer side wall of the inner supporting tube. The mutual cooperation of the guide protrusion and the guide groove forms a sliding guide pair, which strictly limits the movement of the inner supporting tube only along the axial direction of the outer supporting tube, effectively preventing any axial rotation of the inner supporting tube during telescopic adjustment, thereby ensuring the stability and directionality of the lamp holder height adjustment.

[0019] 5. The telescopic adjustable lamp holder of this utility model has a limiting structure on the drive assembly. The limiting structure includes a ratchet, a pawl, a pawl fixing block, and an elastic element. The ratchet is fixedly connected to the adjustment knob, the pawl matches the ratchet, the pawl fixing block is fixedly connected to the base assembly, the pawl is mounted on the pawl fixing block, one end of the elastic element is fixedly connected to the pawl, and the other end of the elastic element is fixedly connected to the pawl fixing block. When the user rotates the adjustment knob, it drives the ratchet to rotate as well. Through the interaction of the ratchet and pawl, when the adjustment knob stops rotating or attempts to rotate in the opposite direction, the pawl is caught by the ratchet teeth of the ratchet, thereby preventing the adjustment knob from rotating in the opposite direction. This structure effectively prevents the inner support tube from accidentally retracting or sliding due to its own weight under heavy load or external force. The function of the elastic element is to allow the pawl to reset and catch the ratchet in time.

[0020] 6. The telescopic adjustable lamp holder of this utility model has a toggle lever on the pawl and a toggle groove on the base assembly, with the toggle lever and the toggle groove matching. By toggling the toggle lever, the pawl can be moved away from the ratchet, preventing it from getting stuck when the inner support tube needs to retract into the outer support tube.

[0021] 7. The telescopic adjustable lamp holder of this utility model has an additional tube inside the inner supporting tube, and a locking component on the inner supporting tube. The lamp holder and the additional tube are fixedly connected or integrally formed. The additional tube further increases the telescopic length of the lamp holder, and the locking component is used to lock the additional tube after the telescopic length is determined to prevent the additional tube from retracting.

[0022] 8. The telescopic adjustable lamp holder of this utility model includes a locking assembly comprising a contraction joint and a locking ring. The contraction joint is disposed on the inner supporting tube, and the locking ring matches the inner supporting tube. A ramp is provided on the inner side of the locking ring. The locking ring and the inner supporting tube are fixed by threads. The ramp provided on the inner side of the locking ring presses against the contraction joint, thereby pressing against the additional tube and thus locking the additional tube.

[0023] 9. The telescopic and adjustable lamp holder of this utility model is further provided with a connecting seat between the base assembly and the supporting outer tube, and the supporting outer tube is fixedly connected to the base assembly through the connecting seat. The connecting seat makes it convenient for users to replace different supporting outer tubes.

[0024] 10. The telescopic adjustable lamp holder of this utility model has leveling feet at the bottom of the base assembly. At least three sets of leveling feet are provided, and each leveling foot also contains an adjusting screw. The bottom of the adjusting screw has a support block, and the support block and adjusting screw are fixedly connected or integrally formed. By adjusting the extension length of the adjusting screw within the adjusting feet, the entire lamp holder can be leveled on uneven ground, ensuring stable support for the lamp holder. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a three-dimensional schematic diagram of the telescopic and adjustable lamp holder of this utility model; Figure 2 This is a cross-sectional view of the telescopic adjustable lamp holder of this utility model; Figure 3 This is a partial enlargement of the telescopic adjustable lamp holder of this utility model. Figure 1 ; Figure 4 This is a top view of the telescopic and adjustable lamp holder of this utility model; Figure 5 This is an exploded view of the telescopic and adjustable lamp holder of this utility model; Figure 6 This is a partial enlargement of the telescopic adjustable lamp holder of this utility model. Figure 2 ; Figure 7 This is a three-dimensional schematic diagram of the locking ring of the telescopic adjustable lamp holder of this utility model.

[0027] In each of the attached drawings: 1. Base assembly, 11. Actuating groove, 12. Connecting seat, 13. Leveling support foot, 14. Adjusting screw, 15. Support block; 2. Support tube assembly, 21. Support outer tube, 22. Support inner tube, 221. Additional tube, 23. Guide structure, 231. Guide protrusion, 232. Guide groove; 3. Drive assembly, 31. Adjusting knob, 32. Drive gear, 33. Driven gear; 4. Transmission assembly, 41. Lead screw, 42. Transmission sleeve, 43. Bearing; 5. Lamp holder; 6. Limiting structure, 61. Ratchet, 62. Pad, 621. Actuating rod, 63. Pad fixing block, 64. Elastic element; 7. Locking assembly, 71. Shrinkage joint, 72. Locking ring. Detailed Implementation

[0028] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0029] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] In the description of this application, it should be understood that the terms "upper", "lower", "side", "front", "rear", etc., indicate the orientation or positional relationship based on the installation orientation or positional relationship, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] In the description of this application, it should be noted that the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0033] It should also be noted that in the embodiments of this application, the same reference numerals are used to represent the same component or part. For the same part in the embodiments of this application, the reference numerals may only be used to mark one part or component as an example in the figure. It should be understood that the reference numerals are also applicable to other identical parts or components.

[0034] Furthermore, in this application, the technical features described in an open-ended manner include both closed technical solutions composed of the listed features and open technical solutions that include the listed features.

[0035] To further understand the utility model content, features, and effects of this application, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings: like Figure 1-7As shown, the telescopic and adjustable lamp holder includes a base assembly 1, a support tube assembly 2, a drive assembly 3, and a transmission assembly 4. The support tube assembly 2 and the base assembly 1 are fixedly connected. The support tube assembly 2 is also provided with a lamp holder 5 for connecting the lamp. The transmission assembly 4 is disposed inside the support tube assembly 2 and on the base assembly 1. The support tube assembly 2 includes an outer support tube 21 and an inner support tube 22. The inner support tube 22 is disposed inside the outer support tube 21. The outer support tube 21 and the base assembly 1 are fixedly connected. The lamp holder 5 is disposed on the inner support tube 22. The transmission assembly 4 is connected to the inner support tube 22. The drive assembly 3 is used to drive the transmission assembly 4 to rotate. In this embodiment, the drive assembly drives the transmission assembly to achieve telescopic movement of the inner support tube on the outer support tube, effectively solving the problem that the lamp holder often needs to be manually disassembled and reassembled during adjustment, which is cumbersome and time-consuming. Of course, it is not limited to this; any other device that can drive the inner support tube to achieve telescopic movement on the outer support tube can be used.

[0036] Specifically, the transmission assembly 4 includes a lead screw 41, a transmission sleeve 42, and a bearing 43. The lead screw 41 is rotatably connected to the outer support tube 21 via the bearing 43, and the transmission sleeve 42 is fixedly connected to the inner support tube 22. The lead screw 41 and the transmission sleeve 42 are connected, and the bottom end of the lead screw 41 is fixedly connected to the drive assembly 3. In this embodiment, the transmission sleeve and the inner support tube are interference-fitted or snap-fitted. The drive assembly drives the lead screw to rotate, and the lead screw drives the transmission sleeve to move up and down on the lead screw. Since the transmission sleeve and the inner support tube are fixedly connected, the inner support tube is driven to extend and retract within the outer support tube. Of course, this is not limited to this; any other component capable of driving the inner support tube to extend and retract within the outer support tube can be used.

[0037] Specifically, the drive assembly 3 includes an adjustment knob 31, a driving gear 32, and a driven gear 33. The adjustment knob 31 is rotatably connected to the base assembly 1, the adjustment knob 31 is fixedly connected to the driving gear 32, the driving gear 32 and the driven gear 33 are meshed together, and the driven gear 33 is fixedly connected to the lead screw 41. In this embodiment, the user rotates the adjustment knob, which drives the driving gear to rotate, which in turn drives the driven gear to rotate, and the driven gear drives the lead screw to rotate. Of course, this is not limited to this; any other mechanism capable of driving the lead screw to rotate can be used.

[0038] Specifically, such as Figure 3As shown, a guide structure 23 is also provided between the outer support tube 21 and the inner support tube 22. The guide structure 23 includes a guide protrusion 231 and a guide groove 232. The guide protrusion 231 and the guide groove 232 are matched. The guide protrusion 231 is disposed on the inner sidewall of the outer support tube 21, and the guide groove 232 is disposed on the outer sidewall of the inner support tube 22, or the guide groove 232 is disposed on the inner sidewall of the outer support tube 21, and the guide protrusion 231 is disposed on the outer sidewall of the inner support tube 22. In this embodiment, the guide protrusion is disposed on the inner sidewall of the outer support tube, and the guide groove is disposed on the outer sidewall of the inner support tube. The mutual cooperation of the guide protrusion and the guide groove forms a sliding guide pair, which strictly restricts the inner support tube to move only along the axial direction of the outer support tube, effectively preventing any axial rotation of the inner support tube during the extension and retraction process, thereby ensuring the stability and directionality of the lamp holder height adjustment. Of course, it is not limited to this; any other structure that can prevent any axial rotation of the inner support tube during the extension and retraction process can be used.

[0039] Specifically, a limiting structure 6 is provided on the drive assembly 3. The limiting structure 6 includes a ratchet 61, a pawl 62, a pawl fixing block 63, and an elastic element 64. The ratchet 61 is fixedly connected to the adjustment knob 31, the pawl 62 matches the ratchet 61, the pawl fixing block 63 is fixedly connected to the base assembly 1, the pawl 62 is mounted on the pawl fixing block 63, one end of the elastic element 64 is fixedly connected to the pawl 62, and the other end of the elastic element 64 is fixedly connected to the pawl fixing block 63. In this embodiment, when the user rotates the adjustment knob, it drives the ratchet to rotate as well. Through the cooperation of the ratchet and pawl, when the adjustment knob stops rotating or attempts to rotate in the opposite direction, the pawl is caught by the ratchet teeth of the ratchet, thereby preventing the adjustment knob from rotating in the opposite direction. This structure effectively prevents the inner support tube from accidentally retracting or sliding due to its own weight under heavy load or external force. The function of the elastic element is to allow the pawl to reset and catch the ratchet in time. Of course, it is not limited to this; other elements that can play a limiting role can also be used.

[0040] Specifically, a lever 621 is provided on the pawl 62, and a lever groove 11 is provided on the base assembly 1. The lever 621 and the lever groove 11 are matched. In this embodiment, the user can move the pawl away from the ratchet by moving the lever, so that the inner support tube will not be stuck when it needs to retract into the outer support tube. Of course, it is not limited to this; other mechanisms that can release the limit can be used.

[0041] Specifically, such as Figure 5-7As shown, an auxiliary tube 221 is provided inside the inner supporting tube 22, and a locking assembly 7 is also provided on the inner supporting tube 22. The lamp holder 5 and the auxiliary tube 221 are fixedly connected or integrally formed. In this embodiment, the addition of the auxiliary tube further increases the telescopic length of the lamp holder. The locking assembly is used to lock the auxiliary tube after the telescopic length is determined, preventing the auxiliary tube from retracting. Of course, it is not limited to this; other components capable of locking the auxiliary tube can be used.

[0042] Specifically, the locking assembly 7 includes a contraction joint 71 and a locking ring 72. The contraction joint 71 is disposed on the supporting inner tube 22, and the locking ring 72 matches the supporting inner tube 22. The inner side of the locking ring 72 is provided with a ramp. In this embodiment, an external thread is provided on the outer wall of the supporting inner tube, and a matching internal thread is provided on the inner wall of the locking ring. The locking ring and the supporting inner tube are fixed by the thread. The ramp provided on the inner side of the locking ring presses against the contraction joint, thereby pressing against the additional tube and thus locking the additional tube. Of course, it is not limited to this; other components capable of locking the additional tube can be used.

[0043] Specifically, a connecting seat 12 is provided between the base assembly 1 and the supporting outer tube 21, and the supporting outer tube 21 is fixedly connected to the base assembly 1 through the connecting seat 12. In this embodiment, the outer wall of the connecting seat is provided with external threads, the base assembly is provided with through holes and internal threads are provided in the through holes, and the connecting seat and the base assembly are fixedly connected by threads.

[0044] Specifically, the base assembly 1 has leveling feet 13 at its bottom, with at least three sets of leveling feet 13. Each leveling foot 13 also contains an adjusting screw 14, and the bottom of the adjusting screw 14 has a support block 15. The support block 15 and the adjusting screw 14 are fixedly connected or integrally formed. In this embodiment, the top of the adjusting screw has a hexagonal groove for easy turning with a hex wrench. By adjusting the extension length of the adjusting screw within the adjusting feet, the entire lamp holder can be leveled on uneven ground, ensuring stable support for the lamp holder. Of course, this is not a limitation; other methods capable of achieving leveling of the base assembly can be used.

[0045] Working principle: During use, the entire lamp holder is leveled on uneven ground by adjusting the extension length of the adjusting screw within the adjusting feet. When extension is needed, the adjusting knob is turned, which drives the drive gear, which in turn drives the driven gear, which in turn drives the lead screw, causing the transmission sleeve to move upward. The transmission sleeve causes the inner support tube to extend out of the outer support tube. When the adjusting knob is turned, it also drives the ratchet to rotate. The pawl engages the ratchet to achieve a limit and prevent retraction. The user manually pulls the additional tube out of the support tube and then tightens the locking ring. The slope on the inner side of the locking ring presses against the contraction joint on the inner support tube to lock the additional tube. When retraction is needed, the lever is moved to move the pawl away from the ratchet. The adjusting knob is then turned in the opposite direction, causing the lead screw to drive the transmission sleeve downward. The transmission sleeve causes the inner support tube to move downward and retract into the outer support tube. The locking ring is then released, allowing the additional tube to retract into the inner support tube.

[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A telescopic and adjustable lamp holder, characterized in that: The assembly includes a base assembly (1), a support tube assembly (2), a drive assembly (3), and a transmission assembly (4). The support tube assembly (2) and the base assembly (1) are fixedly connected. The support tube assembly (2) is also provided with a lamp holder (5) for connecting a lamp. The transmission assembly (4) is disposed inside the support tube assembly (2) and on the base assembly (1). The support tube assembly (2) includes an outer support tube (21) and an inner support tube (22). The inner support tube (22) is disposed inside the outer support tube (21). The outer support tube (21) and the base assembly (1) are fixedly connected. The lamp holder (5) is disposed on the inner support tube (22). The transmission assembly (4) is connected to the inner support tube (22). The drive assembly (3) is used to drive the transmission assembly (4) to rotate.

2. The telescopic and adjustable lamp holder according to claim 1, characterized in that: The transmission assembly (4) includes a lead screw (41), a transmission sleeve (42) and a bearing (43). The lead screw (41) is rotatably connected to the outer support tube (21) through the bearing (43). The transmission sleeve (42) is fixedly connected to the inner support tube (22). The lead screw (41) is connected to the transmission sleeve (42). The bottom end of the lead screw (41) is fixedly connected to the drive assembly (3).

3. The telescopic and adjustable lamp holder according to claim 2, characterized in that: The drive assembly (3) includes an adjustment knob (31), a drive gear (32), and a driven gear (33). The adjustment knob (31) is rotatably connected to the base assembly (1), the adjustment knob (31) is fixedly connected to the drive gear (32), the drive gear (32) and the driven gear (33) are meshed, and the driven gear (33) and the lead screw (41) are fixedly connected.

4. The telescopic and adjustable lamp holder according to claim 3, characterized in that: A guide structure (23) is also provided between the outer support tube (21) and the inner support tube (22). The guide structure (23) includes a guide protrusion (231) and a guide groove (232). The guide protrusion (231) and the guide groove (232) are matched. The guide protrusion (231) is disposed on the inner wall of the outer support tube (21), and the guide groove (232) is disposed on the outer wall of the inner support tube (22). Alternatively, the guide groove (232) is disposed on the inner wall of the outer support tube (21), and the guide protrusion (231) is disposed on the outer wall of the inner support tube (22).

5. The telescopic and adjustable lamp holder according to claim 4, characterized in that: A limiting structure (6) is provided on the drive assembly (3). The limiting structure (6) includes a ratchet (61), a pawl (62), a pawl fixing block (63), and an elastic element (64). The ratchet (61) is fixedly connected to the adjustment knob (31). The pawl (62) matches the ratchet (61). The pawl fixing block (63) is fixedly connected to the base assembly (1). The pawl (62) is disposed on the pawl fixing block (63). One end of the elastic element (64) is fixedly connected to the pawl (62), and the other end of the elastic element (64) is fixedly connected to the pawl fixing block (63).

6. The telescopic and adjustable lamp holder according to claim 5, characterized in that: A lever (621) is provided on the pawl (62), and a lever groove (11) is provided on the base assembly (1). The lever (621) and the lever groove (11) are matched.

7. The telescopic adjustable lamp holder according to claim 5 or 6, characterized in that: An additional tube (221) is provided inside the inner support tube (22), and a locking component (7) is also provided on the inner support tube (22). The lamp holder (5) and the additional tube (221) are fixedly connected or integrally formed.

8. The telescopic and adjustable lamp holder according to claim 7, characterized in that: The locking assembly (7) includes a contraction joint (71) and a locking ring (72). The contraction joint (71) is disposed on the inner support tube (22). The locking ring (72) is matched with the inner support tube (22). The inner side of the locking ring (72) is provided with a slope.

9. The telescopic adjustable lamp holder according to claim 8, characterized in that: A connecting seat (12) is also provided between the base assembly (1) and the supporting outer tube (21), and the supporting outer tube (21) is fixedly connected to the base assembly (1) through the connecting seat (12).

10. The telescopic adjustable lamp holder according to claim 8 or 9, characterized in that: The base assembly (1) is provided with leveling feet (13) at the bottom. At least three sets of leveling feet (13) are provided. The leveling feet (13) are also provided with adjusting screws (14). The bottom of the adjusting screws (14) is provided with support blocks (15). The support blocks (15) and the adjusting screws (14) are fixedly connected or integrally formed.

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