A lamp holder and a multi-head floor lamp having the same

Abstract

The application discloses a lamp holder and a multi-head floor lamp with the same. The lamp holder comprises a bottom shell, a cover, a light source plate, a reflecting cup and a connecting rod. The bottom shell has a containing cavity with an open upper end. The light source plate and the reflecting cup are accommodated in the containing cavity. The cover is covered on the open end of the bottom shell. The buckle of the cover is connected with the clamping groove of the bottom shell to press and tightly limit the reflecting cup between the bottom shell and the cover. The cover is provided with a first limiting protrusion, and the buckle is provided with a second limiting protrusion. The two protrusions abut against each other to limit the stroke of the buckle. The inner side wall of the containing cavity is provided with a threaded mounting seat. The locking opening of the threaded mounting seat faces upwards and is provided with a connecting opening. One end of the connecting rod extends into the threaded mounting seat, and the other end of the connecting rod is connected with an external support. The locking screw is arranged in the locking opening and is screwed. The end of the locking screw abuts against the connecting rod to lock. The application realizes quick assembly through the buckle and the clamping groove. The limiting protrusions prevent the reflecting cup from being excessively pressed. The locking opening faces upwards, which is convenient for locking by using an electric screwdriver. The assembly efficiency and the connection reliability are improved.

Description

Technical Field

[0001] This utility model belongs to the field of lighting technology, and in particular relates to a lamp holder and a multi-head floor lamp having the lamp holder. Background Technology

[0002] Floor lamps, as commonly used indoor lighting fixtures, are widely used in homes, offices, and commercial spaces. Multi-head floor lamps, in particular, are favored because they can illuminate multiple areas simultaneously. Existing multi-head floor lamps typically include a base, a pole, and multiple lamp heads spaced along the pole's axis. Each lamp head mainly consists of a base shell, a cover, a light source plate, a reflector, and a connecting rod. However, existing lamp heads still have several shortcomings in their structural assembly and connection methods. Firstly, the cover and base shell of the lamp head are generally sealed using a threaded connection. This connection method is prone to stripping and jamming during repeated tightening, reducing assembly efficiency and making disassembly and maintenance extremely inconvenient. More importantly, when the cover is tightened to press the reflector, if threaded fastening is used, the locking force is difficult to control precisely, easily leading to deformation or displacement of the reflector due to excessive pressure, thus affecting the uniformity of light output and optical effects of the lamp. Secondly, in the connection structure between the lamp head and the pole, existing technologies typically use adhesive bonding or welding to fix the connecting rod to the side wall of the base shell, or to integrally mold the connecting rod with the base shell. Among them, the adhesive bonding method requires waiting for the adhesive to cure, which takes a long time and cannot meet the needs of rapid assembly on the production line. In addition, the bonding strength is easily affected by factors such as changes in ambient temperature and aging of adhesive. After long-term use, the connection may become loose or even fall off. The welding method requires specialized welding equipment and skilled operators. The process is complicated and costly. Once the welding is completed, it cannot be disassembled, making it impossible to disassemble and repair the lamp head separately. Utility Model Content

[0003] (a) Purpose of the utility model In order to overcome the above shortcomings, the purpose of this utility model is to provide a lamp head and a multi-head floor lamp with the lamp head, so as to solve the technical problems of existing multi-head floor lamps where the threaded connection between the lamp head and the bottom shell is prone to stripping and jamming and excessive compression of the reflector cup, and the use of adhesive or welding between the lamp head and the pole has the problems of time-consuming curing, non-removability and low assembly efficiency.

[0004] (II) Technical Solution To achieve the above objectives, this application provides the following technical solution: A lamp holder includes: a base shell, a cover, a light source plate, a reflector, and a connecting rod. The base shell has a receiving cavity with an opening at the top. The light source plate and the reflector are sequentially housed within the receiving cavity from bottom to top. The cover closes onto the opening of the base shell. The inner wall of the opening of the base shell has a slot, and the outer periphery of the cover has a corresponding buckle. The buckle engages with the slot to press and confine the reflector between the base shell and the cover. The outer wall of the cover has a first limiting protrusion at the corresponding buckle, and the buckle has a corresponding second limiting protrusion. The point abuts against the second limiting protrusion to limit the movement of the buckle after it is engaged in the slot; a threaded mounting seat is provided on the inner wall of the receiving cavity, the locking opening of the threaded mounting seat faces upward, the threaded mounting seat has a connecting opening through the outer wall of the bottom shell, one end of the connecting rod extends into the threaded mounting seat through the connecting opening, and the other end is used to connect to the external bracket; the lamp holder also includes: a set screw, the set screw passes through the locking opening and is threadedly engaged with the threaded mounting seat, and its end abuts against the connecting rod to lock the connecting rod.

[0005] The top cover and bottom shell are connected by a snap-fit ​​mechanism that enables threadless, quick assembly. During operation, simply press the top cover into place to secure it; there's no need to tighten screws individually, significantly improving assembly efficiency. Simultaneously, the snap-fit ​​mechanism also makes disassembly convenient, facilitating future maintenance and replacement of internal components such as the light source board. The snap-fit ​​on the top cover engages with the slots on the inner wall of the bottom shell. When the top cover is closed, the snap-fit ​​engages with the slots to form a locking mechanism, replacing traditional threaded connections and effectively avoiding problems such as stripping and jamming caused by repeated tightening of threaded connections. More importantly, the outer wall of the cover has a first limiting protrusion at the corresponding buckle, and the buckle has a corresponding second limiting protrusion. During the closing process of the cover, the buckle undergoes elastic deformation towards the center of the cover under the pressure of the bottom shell wall. At this time, the second limiting protrusion on the buckle moves with the buckle until it abuts against the first limiting protrusion on the outer wall of the cover, thereby forming a limiting block on the movement path of the buckle. This restricts the buckle from continuing to deform towards the center, preventing the buckle from being pressed too deeply due to excessive deformation, and preventing the reflector cup from being deformed or displaced due to excessive pressure. This effectively ensures the uniformity of light output and the stability of the optical effect of the lamp. Furthermore, the threaded mounting seat on the inner wall of the cavity has its locking opening facing upwards. Operators only need to insert a screwdriver vertically into the upper opening of the bottom shell to tighten the set screw. This opening direction design allows the electric screwdriver to quickly intervene, realizing the automation of the connecting rod locking process and significantly improving production and assembly efficiency. The set screw passes through the locking opening and engages with the threaded mounting seat, with its end abutting against the connecting rod to achieve locking. The structure is simple and reliable, ensuring the stability of the connection between the lamp holder and the external bracket.

[0006] In some embodiments, the bottom wall of the receiving cavity is integrally formed with a heat dissipation structure.

[0007] In the above solution, the heat dissipation structure is integrally formed with the bottom shell, eliminating the need for additional heat sink installation. This reduces the number of parts and assembly steps, which helps to reduce material costs and simplify the production process. At the same time, the integrally formed structure eliminates contact thermal resistance between the heat dissipation structure and the bottom shell, allowing the heat generated by the light source board during operation to be transferred to the heat dissipation structure more efficiently and dissipated into the surrounding environment. This effectively reduces the operating temperature of the light source board, extends the lifespan of the light source, and ensures the stability of its luminous efficiency.

[0008] In some embodiments, the heat dissipation structure consists of multiple radially arranged heat dissipation ribs extending from the bottom center of the bottom shell towards the side wall.

[0009] In the above scheme, multiple heat dissipation fins extend radially from the center of the bottom of the shell to the side wall. This layout allows the heat at the bottom of the shell to be evenly conducted and diffused to the surrounding area along each heat dissipation fin, avoiding excessive heat concentration in the central area, thereby improving the overall heat dissipation efficiency and the uniformity of temperature distribution.

[0010] In some embodiments, the heat dissipation structure includes multiple concentric annular heat sinks, with gaps formed between adjacent concentric annular heat sinks.

[0011] In the above solution, multiple concentric annular heat sinks are integrally formed with the bottom shell, which significantly increases the heat dissipation surface area within the limited installation space of the cavity bottom wall. The heat generated by the light source board can be quickly conducted to each heat sink and dissipated to the surrounding environment through the outer surface of the bottom shell. The gaps formed between adjacent heat sinks separate them from each other, avoiding the local heat accumulation caused by direct heat transfer between adjacent heat sinks. This allows the heat to be more evenly distributed on each heat sink and quickly dissipated, thereby effectively reducing the thermal resistance between the light source board and the bottom shell. This prevents heat from accumulating locally on the light source board, which would lead to accelerated light decay, and helps to extend the overall service life of the lamp and ensure the stability of long-term lighting.

[0012] In some embodiments, the connecting opening is provided with an internal thread for engaging with the external thread at the end of the connecting rod, and the connecting opening is connected to the locking opening.

[0013] The connecting rod and the connecting opening are connected by internal and external threads, allowing for initial axial positioning of the connecting rod upon insertion into the threaded mounting base. This position is fixed without the need for additional tools, facilitating subsequent tightening of the set screw. Simultaneously, the threaded engagement itself provides tensile strength, creating a double-locking effect with the set screw, further enhancing the connection strength and vibration resistance between the connecting rod and the threaded mounting base. Even under prolonged use or external shaking, the connecting rod is unlikely to loosen from the connecting opening, effectively improving the reliability of the connection between the lamp holder and the external bracket. Furthermore, the connecting rod end is directly machined with external threads, and the connecting opening is directly machined with internal threads, eliminating the need for separate threaded connectors. This reduces the number of parts, lowering material costs and simplifying the assembly process.

[0014] Another aspect of this application provides a multi-head floor lamp, comprising: a base, a vertical pole, a horizontal bar, and at least two sets of the above-mentioned lamp heads. The bottom end of the vertical pole is fixedly connected to the base, the horizontal bar is horizontally connected to the vertical pole and arranged at intervals along the axial direction of the vertical pole, and multiple sets of lamp heads; the end of the connecting rod of each lamp head away from the bottom shell is respectively connected to the horizontal bar.

[0015] In the above solution, the multi-head floor lamp integrates at least two sets of lamp heads, enabling each lamp head to have the advantages of threadless quick assembly, limiting and preventing crushing, and quick locking of the connecting rod, thereby achieving a comprehensive improvement in production and assembly efficiency at the lamp level; at the same time, the lamp heads are arranged at intervals along the axial direction of the pole, which can provide lighting for multiple different areas at the same time, meeting the user's needs for multi-directional and multi-angle lighting.

[0016] In some embodiments, the pole has a wiring channel inside, and the power supply wires of each lamp head pass through the wiring channel inside the pole via the connecting rod.

[0017] In the above solution, the power supply wires are passed through the wiring channel of the pole through the inside of the connecting rod, completely hiding the wires inside the lamp head and the pole, avoiding the safety hazards caused by exposed wires, and making the overall appearance of the lamp more concise and beautiful; the wires of each lamp head converge inside the pole, and the wiring is neat and orderly, avoiding the problem of multiple wires being tangled and messy, and also facilitating the later line inspection and maintenance.

[0018] In some embodiments, the connecting rod and the crossbar are connected by a universal joint.

[0019] In the above solution, the universal joint allows the lamp head to rotate freely in multiple directions relative to the crossbar. Users can flexibly adjust the illumination angle of each lamp head according to actual usage needs, thus achieving free adjustment of the lighting direction. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the lamp holder structure of this utility model; Figure 2 This is an exploded view of the lamp holder of this utility model; Figure 3 This is a top view of the lamp holder of this utility model; Figure 4 yes Figure 3 A cross-sectional view along the AA direction; Figure 5 This is a first-view structural schematic diagram of the lamp holder cover of this utility model; Figure 6 This is a second-view structural schematic diagram of the lamp holder cover of this utility model; Figure 7 yes Figure 6 A magnified view of part A in the middle; Figure 8 This is a first-view structural schematic diagram of the bottom shell of the lamp holder of this utility model; Figure 9 This is a second-view structural schematic diagram of the bottom shell of the lamp holder of this utility model; Figure 10 yes Figure 9 Cross-sectional view along the BB direction; Figure 11 This is a structural schematic diagram of the multi-head floor lamp of this utility model.

[0021] Figure label: 1. Bottom shell; 11. Receiving cavity; 111. Slot; 12. Heat dissipation structure; 121. Concentric ring heat sink; 2. Top cover; 21. Buckle; 22. First limiting protrusion; 23. Second limiting protrusion; 3. Light source board; 4. Reflector cup; 5. Connecting rod; 6. Threaded mounting base; 61. Connecting opening; 62. Locking opening; 7. Set screw; 8. Base; 9. Upright pole; 10. Lamp head; 13. Crossbar. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0023] This utility model provides a lamp head 10, which mainly comprises: a base shell 1, a cover 2, a light source plate 3, a reflector 4, and a connecting rod 5. The lamp head 10 can be used as an independent lighting component mounted on various lamp holders, or it can be assembled as a lighting unit in a multi-head floor lamp.

[0024] The bottom shell 1 is roughly disc-shaped with an open top, creating a cavity 11 inside. This cavity 11 primarily houses the light source plate 3 and the reflector cup 4, which are placed sequentially from bottom to top within the cavity 11. Specifically, the light source plate 3 is placed at the bottom of the cavity 11, and the reflector cup 4 is then stacked on top of it. The cover 2 closes the top opening of the bottom shell 1 to seal the cavity 11. An annular groove 111 extends continuously along the circumference of the inner wall of the bottom shell 1, forming a complete annular groove structure. When the cover 2 is pressed down from above, the corresponding buckles 21 on the outer periphery of the cover 2 engage with the annular groove 111, securing the cover 2 to the opening of the bottom shell 1. In this closed state, the lower surface of the cover 2 abuts against the upper edge of the reflector cup 4, so that the reflector cup 4 is pressed and limited between the bottom shell 1 and the cover 2, ensuring that the reflector cup 4 will not loosen or shift during the use of the lamp head 10.

[0025] It is worth noting that the outer wall of the cover 2 has a first limiting protrusion 22 at the position corresponding to the buckle 21, which protrudes outward from the outer wall of the cover 2; the buckle 21 has a corresponding second limiting protrusion 23, which protrudes from the surface of the buckle 21 toward the direction of the first limiting protrusion 22. When the cover 2 is closed, the buckle 21 will elastically deform toward the center of the cover 2 under the pressure of the wall of the bottom shell 1. At this time, the second limiting protrusion 23 on the buckle 21 moves together with the buckle 21 until it abuts against the first limiting protrusion 22 on the outer wall of the cover 2, thereby forming a limiting block on the movement path of the buckle 21, restricting the travel of the buckle 21 to continue deforming toward the center, and preventing the buckle 21 from being pressed too deeply due to excessive deformation. In this way, the clip 21 will not exert excessive pressure on the reflector cup 4, effectively preventing the reflector cup 4 from deforming or shifting due to pressure, thus ensuring the uniformity of light output and the stability of the optical effect of the lamp. Both the clip 21 and the slot 111 can be made of plastic materials with a certain degree of elasticity, such as polycarbonate or acrylonitrile-butadiene-styrene copolymer. The elastic deformation of the material allows the clip 21 to be smoothly engaged and disengaged, while also facilitating the subsequent disassembly of the cover 2 for maintenance.

[0026] Based on this, a threaded mounting seat 6 is provided on the inner wall of the receiving cavity 11. This threaded mounting seat 6 is a seat structure with internal threads, which can be integrally formed with the bottom shell 1, or fixed to the inner wall of the receiving cavity 11 by means of inlay or other methods. The locking opening 62 of the threaded mounting seat 6 faces upwards, meaning that when viewed or operated from above the bottom shell 1, the internal threaded hole of the threaded mounting seat 6 can be directly seen. A connecting opening 61, penetrating the side wall of the bottom shell 1, is provided on the threaded mounting seat 6, corresponding to the side of the bottom shell 1. This connecting opening 61 communicates with the internal channel of the threaded mounting seat 6. One end of the connecting rod 5 extends from the outside of the bottom shell 1 through the connecting opening 61 into the interior of the threaded mounting seat 6, while the other end of the connecting rod 5 extends out of the bottom shell 1 for connection with external supports (such as the upright 9 and crossbar 13 of a floor lamp). The lamp holder 10 also includes a set screw 7, which extends from the upper opening of the base 1, passes through the locking opening 62 of the threaded mounting base 6, and forms a threaded engagement with the internal thread of the threaded mounting base 6. When the set screw 7 is tightened, the end of the set screw 7 gradually moves towards the connecting rod 5, and finally abuts against the outer peripheral wall of the end of the connecting rod 5 that extends into the threaded mounting base 6, locking the connecting rod 5 in the threaded mounting base 6 and preventing the connecting rod 5 from coming out of the connecting opening 61. This structural design allows the operator to simply insert a screwdriver vertically into the upper opening of the base 1 to tighten the set screw 7, and an electric screwdriver can also be easily used, greatly improving the assembly efficiency of the connecting rod 5 locking process.

[0027] Specifically, the connecting rod 5 is a hollow tubular structure with an internal channel for wires to pass through. The power supply wires on the light source board 3 can pass through the inside of the connecting rod 5 and extend from the end of the connecting rod 5 outside the bottom shell 1 for electrical connection with an external power source or other lamp holders 10. This hollow design achieves concealed wiring and avoids the structural complexity caused by additional wire holes. Preferably, both the bottom shell 1 and the cover 2 can be integrally formed from aluminum alloy using a die-casting process, ensuring structural strength and good thermal conductivity. The connecting rod 5 can be cut from stainless steel tubing, and its end extending into the threaded mounting base 6 can be machined into a flat shape to increase the contact area with the end of the set screw 7, improving the reliability of locking.

[0028] In some embodiments, the bottom wall of the receiving cavity 11 is integrally formed with a heat dissipation structure 12. That is, the heat dissipation structure 12 and the bottom shell 1 are formed as a single component during manufacturing, eliminating the need for an additional independent heat sink. This integral molding method reduces the number of parts and subsequent assembly processes, which helps to reduce material costs and production complexity. At the same time, since the heat dissipation structure 12 and the bottom shell 1 are integrally constructed, there is no contact interface or contact thermal resistance between them. The heat generated by the light source board 3 during operation can be transferred more efficiently and directly to the heat dissipation structure 12, and then the heat dissipation structure 12 dissipates the heat to the surrounding environment, thereby effectively reducing the operating temperature of the light source board 3, extending the lifespan of the light source, and ensuring the stability of its luminous efficiency. The bottom shell 1 is preferably made of a metal material with good thermal conductivity, such as aluminum alloy or copper alloy. Of course, in cost-sensitive applications, thermally conductive plastics can also be used as alternative materials.

[0029] Specifically, in some embodiments, the heat dissipation structure 12 consists of multiple radially arranged heat dissipation ribs. These ribs extend radially from the central area of ​​the bottom of the bottom shell 1 towards the side wall of the bottom shell 1, and the multiple heat dissipation ribs are evenly distributed circumferentially along the bottom of the bottom shell 1. This radial layout allows heat in the central area of ​​the bottom of the bottom shell 1 to be evenly conducted and diffused to the surrounding areas along the extension direction of each heat dissipation rib, avoiding excessive heat concentration in the central area of ​​the bottom shell 1 and the formation of local hot spots, thereby improving the overall heat dissipation efficiency. At the same time, it also makes the temperature distribution at the bottom of the bottom shell 1 more uniform, which is beneficial to extending the overall service life of the light source board 3.

[0030] In other embodiments, the heat dissipation structure 12 may also adopt another construction form, namely, including multiple concentric annular heat sinks 121. These concentric annular heat sinks 121 are arranged sequentially from the inside to the outside with the bottom center of the base shell 1 as the center, and a certain gap is formed between adjacent concentric annular heat sinks 121. The multiple concentric annular heat sinks 121 are integrally formed with the base shell 1, which significantly increases the heat dissipation area within the limited installation space of the bottom wall of the receiving cavity 11. The heat generated by the light source plate 3 can be quickly conducted to each heat sink and then dissipated to the surrounding environment through the outer surface of the base shell 1. The gap between adjacent heat sinks separates each heat sink from each other, avoiding the phenomenon of local heat accumulation caused by direct heat transfer between adjacent heat sinks. This allows the heat to be more evenly distributed on each heat sink and quickly dissipated, effectively reducing the thermal resistance between the light source plate 3 and the base shell 1, avoiding the accumulation of heat in the local area of ​​the light source plate 3 that leads to accelerated light decay, and helping to extend the overall service life of the lamp and ensure the stability of long-term lighting.

[0031] In some embodiments, the connecting opening 61 is provided with an internal thread for engaging with the external thread at the end of the connecting rod 5. Through the engagement of the internal and external threads, the connecting rod 5 achieves initial axial positioning after being inserted into the threaded mounting seat 6, maintaining its position without the need for additional tools, facilitating subsequent tightening of the set screw 7. Simultaneously, the thread engagement itself possesses a certain degree of pull-out resistance, forming a double fixation with the locking action of the set screw 7, further enhancing the connection strength and vibration resistance between the connecting rod 5 and the base shell 1. Even under prolonged use or external shaking, the connecting rod 5 is not easily dislodged from the connecting opening 61, effectively improving the connection reliability between the lamp holder 10 and the external bracket. Furthermore, the external thread is directly machined at the end of the connecting rod 5, and the internal thread is directly machined in the connecting opening 61, eliminating the need for additional independent threaded connectors, reducing the number of parts, and helping to lower material costs and simplify the assembly process.

[0032] Another aspect of this utility model provides a multi-head floor lamp, which includes: a base 8, a vertical pole 9, a horizontal bar 13, and at least two sets of the aforementioned lamp heads 10. The bottom end of the vertical pole 9 is fixedly connected to the base 8, and the vertical pole 9 extends vertically. The horizontal bar 13 extends laterally on the vertical pole 9 and is spaced apart along the axial direction of the vertical pole 9. Specifically, the horizontal bar 13 is connected to the vertical pole 9 via a threaded head. Each set of lamp heads 10 is connected to a horizontal bar 13, meaning that each lamp head 10 is installed at different heights on the vertical pole 9. The connecting rod 5 of each lamp head 10 is connected to the horizontal bar 13, thereby fixing each lamp head 10 at different heights on the vertical pole 9, achieving a multi-layer lighting effect. By integrating multiple sets of the aforementioned lamp heads 10, each lamp head 10 has the advantages of threadless quick assembly, limiting and preventing crushing, and quick locking of the connecting rod 5, thus achieving a comprehensive improvement in production and assembly efficiency at the overall lamp level. Meanwhile, multiple sets of lamp heads 10 are arranged at intervals along the axis of the pole 9, which can provide lighting for multiple different areas at the same time, meeting the user's needs for multi-directional and multi-angle lighting.

[0033] Based on this, the pole 9 has a wiring channel extending along its axial direction. The crossbar 13 and the connecting rod 5 of the lamp holder 10 are also hollow structures. The power supply wires of each lamp holder 10 are led out from inside the lamp holder 10, pass through the connecting rod 5 and the crossbar 13, enter the wiring channel of the pole 9, and then extend along the wiring channel to the bottom of the pole 9 to connect with an external power source. This wiring method completely hides the wires inside the lamp holder 10 and the pole 9, avoiding the safety hazards caused by exposed wires on the lamp surface, while also making the overall appearance of the lamp more concise and aesthetically pleasing. The wires of each lamp holder 10 converge in the same wiring channel inside the pole 9, resulting in neat and orderly wiring and avoiding the problem of multiple wires tangled and messy on the outside of the pole 9.

[0034] Preferably, the connecting rod 5 and the crossbar 13 are connected via a universal joint. One end of the universal joint is fixed to the end of the crossbar 13, and the other end is fixedly connected to the end of the connecting rod 5 away from the bottom shell 1. Through the rotation function of the universal joint, the lamp head 10 can swing and rotate freely in multiple directions relative to the crossbar 13. In this way, users can flexibly adjust the illumination angle of each lamp head 10 according to the actual usage scenario and lighting needs, realizing free adjustment of the lighting direction, further improving the convenience and applicability of the multi-head floor lamp. The universal joint can be a ball joint type or a cross-axis type, as long as it can achieve multi-directional rotation adjustment.

[0035] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A lamp holder (10), characterized in that, include: The base shell (1), cover (2), light source plate (3), reflector cup (4), and connecting rod (5) are provided. The base shell (1) has a receiving cavity (11) with an opening at the top. The light source plate (3) and the reflector cup (4) are sequentially housed in the receiving cavity (11) from bottom to top. The cover (2) covers the opening end of the base shell (1). The inner wall of the opening end of the base shell (1) is provided with a slot (111). The outer periphery of the cover (2) is provided with a buckle (21). The buckle (21) engages with the slot (111) to press and limit the reflector cup (4) between the base shell (1) and the cover (2). The outer wall of the cover (2) is provided with a first limiting protrusion (22) at the location corresponding to the buckle (21). The buckle (21) is provided with a second limiting protrusion (23). The first limiting protrusion (22) and the second limiting protrusion (23) abut against each other to limit the movement of the buckle (21) after it is inserted into the slot (111); the inner wall of the receiving cavity (11) is provided with a threaded mounting seat (6), the locking opening (62) of the threaded mounting seat (6) faces the upper end opening, the threaded mounting seat (6) passes through the outer wall of the bottom shell (1) and has a connecting opening (61), one end of the connecting rod (5) extends into the threaded mounting seat (6) through the connecting opening (61), and the other end is used to connect to the external bracket; the lamp head (10) also includes: a set screw (7), the set screw (7) passes through the locking opening (62) and is threadedly engaged with the threaded mounting seat (6), and its end abuts against the connecting rod (5) to lock the connecting rod (5).

2. The lamp holder (10) according to claim 1, characterized in that, The bottom wall of the cavity (11) is integrally formed with a heat dissipation structure (12).

3. The lamp holder (10) according to claim 2, characterized in that, The heat dissipation structure (12) consists of multiple radially arranged heat dissipation ribs that extend from the bottom center of the bottom shell (1) to the side wall.

4. The lamp holder (10) according to claim 2, characterized in that, The heat dissipation structure (12) includes multiple concentric ring-shaped heat sinks (121), with gaps formed between adjacent concentric ring-shaped heat sinks (121).

5. The lamp holder (10) according to claim 1, characterized in that, The connecting opening (61) is provided with an internal thread for engaging with the external thread at the end of the connecting rod (5), and the connecting opening (61) is connected to the locking opening (62).

6. A multi-head floor lamp, characterized in that, include: The base (8), the upright (9), the crossbar (13) and at least two sets of lamp heads (10) as described in any one of claims 1-5, wherein the bottom end of the upright (9) is fixedly connected to the base (8), and the crossbar (13) is laterally connected to the upright (9) and arranged at intervals along the axial direction of the upright (9); the connecting rod (5) of each lamp head (10) is connected to the crossbar (13) at one end away from the bottom shell (1).

7. The multi-head floor lamp according to claim 6, characterized in that, The pole (9) has a wiring channel inside, and the power supply wires of each lamp head (10) pass through the connecting rod (5) into the wiring channel of the pole (9).

8. The multi-head floor lamp according to claim 6, characterized in that, The connecting rod (5) and the crossbar (13) are connected by a universal joint.

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