A lighting device

Abstract

The application provides a kind of lighting device, belongs to lighting and smart home technical field.It includes: outer pole, cavity is formed in outer pole inside and the first opening is formed in outer pole one end and is communicated with cavity;Inner pole, inner pole is at least partially through the first opening and is set in the cavity of outer pole and inner pole can be driven relative to outer pole sliding;Light source, light source is arranged at the end of inner pole and the position of light source can be changed when inner pole is driven relative to outer pole sliding;Cable, one end is connected on power output part, the other end is arranged in outer pole and inner pole and is connected with light source for power supply to light source;Tensioning assembly, it is used to pull cable to make cable in outer pole and inner pole always in tension state, wherein the tension of tensioning assembly acting on cable is less than the maximum static friction force between outer pole and inner pole.In the application, inner pole can slide in outer pole, which can realize the adjustment of light source illumination area, and wire can be hidden in the pole, wire is not exposed, and the appearance effect is better.

Description

Technical Field

[0001] This invention relates to the fields of lighting and smart home technology, and in particular to a lighting device. Background Technology

[0002] Currently, lighting equipment on the market is usually designed with multiple joints to adjust the lighting area. The joints are connected by pivots to allow rotation between them.

[0003] When lighting equipment with multiple joints rotates, the wires passing through the joints may become twisted. In addition, due to the limited space on the pivot, the wires often go around the pivot and protrude from the lamp post, resulting in a poor appearance. Summary of the Invention

[0004] To overcome the problems existing in related technologies, the present invention proposes a lighting device, comprising:

[0005] The outer rod has a cavity inside and a first opening at one end of the outer rod that communicates with the cavity.

[0006] The inner rod is at least partially fitted into the cavity of the outer rod through a first opening and is drivable to slide relative to the outer rod.

[0007] The light source is located at the end of the inner rod and its position can be changed when the inner rod is driven to slide relative to the outer rod.

[0008] The cable has one end connected to the power output unit and the other end passed through the outer and inner poles to connect to the light source for supplying power to the light source.

[0009] The tensioning assembly is used to pull the cable to keep the cable in the outer and inner rods under tension at all times, wherein the tensioning force exerted on the cable by the tensioning assembly is less than the maximum static friction between the outer and inner rods.

[0010] In the above technical solution, the tensioning component includes a sliding member that is slidably disposed in the cavity of the outer rod, one end of the cable is connected to the power output part, and the other end passes around the sliding member and is connected to the light source;

[0011] The tensioning assembly also includes an elastic element disposed in the cavity of the outer rod. The elastic element and the light source are disposed on both sides of the sliding element, wherein one end of the elastic element is connected to the outer rod and the other end is connected to the sliding element.

[0012] The elastic force of the elastic component is applied to the cable through the sliding component.

[0013] In any of the above embodiments, a wheel-shaped component is provided on the surface of the sliding member, and one end of the elastic member is connected to the wheel-shaped component and the other end is connected to the outer rod;

[0014] Two sets of wheel-shaped components are provided, and the two sets of wheel-shaped components are arranged opposite each other on both sides of the elastic member, wherein:

[0015] Each set of wheel-shaped components is connected to a corresponding elastic element;

[0016] The wheel-shaped component is also provided with a first boss, and the end of the elastic component near the sliding component is fixed on the first boss;

[0017] The tensioning assembly also includes a fixing bracket on the outer rod, with the end of the elastic element away from the sliding element fixed to the fixing bracket.

[0018] In any of the above embodiments, the sliding member includes a pulley slidably disposed in the cavity of the outer rod, the pulley including a central shaft, and two sets of wheel-shaped components disposed at both ends of the central shaft;

[0019] One end of the cable is connected to the power output unit, and the other end is routed around the central shaft and connected to the light source.

[0020] The elastic component includes a tension spring, one end of which is fixedly connected to the outer rod and the other end is fixedly connected to the wheel-shaped component;

[0021] The fixing frame includes a tension spring bracket. The outer rod has a second opening at the end away from the first opening. The tension spring bracket is located at the end of the outer rod away from the first opening and at the second opening. The end of the tension spring away from the pulley is fixed to the tension spring bracket.

[0022] In any of the above embodiments, a second boss is formed at the bottom of the cavity of the outer rod, and a groove is formed between the side of the second boss and the side of the cavity of the outer rod. Two sets of wheel-shaped components on the sliding member are respectively disposed in the grooves on both sides of the second boss.

[0023] In any of the above embodiments, the lighting device further includes a first fixing component and a second fixing component;

[0024] The cable has a first fixed position and a second fixed position;

[0025] The first fixing component is used to fix the cable at a first fixed position, and the second fixing component is used to fix the cable at a second fixed position.

[0026] The cable segment located between the first fixed position and the second fixed position serves as the cable tensioning segment, wherein the tensioning component acts on the cable tensioning segment to keep the cable in the outer rod and inner rod always under tension.

[0027] In any of the above embodiments, a sliding mechanism is further provided inside the outer rod. The sliding mechanism includes a sliding bracket disposed in the cavity of the outer rod. The sliding bracket is provided with a plurality of bearings. The bearings are configured to reduce the friction between the sliding bracket and the outer rod when the sliding bracket slides in the cavity of the outer rod.

[0028] The end of the sliding bracket is fixedly connected to the end of the inner rod. The cable passes through the sliding bracket and the inner rod in sequence and is connected to the light source. When the inner rod is driven to slide relative to the outer rod, the inner rod can drive the sliding bracket to slide in the cavity of the outer rod.

[0029] The first fixing component is disposed on the surface of the sliding bracket and is configured to fix the cable passing through the sliding bracket at a first fixing position;

[0030] The first fixing component includes a first pressure block disposed on the surface of the sliding bracket, and the first fixing position of the cable is fixed on the sliding bracket by the first pressure block.

[0031] In any of the above embodiments, the lighting device further includes a friction plate disposed in the cavity of the outer rod, the friction plate being configured to provide frictional force when the inner rod slides relative to the outer rod;

[0032] The friction plate is located on the surface of the sliding bracket and forms friction with the inner wall of the outer rod.

[0033] The friction plate has protrusions;

[0034] A limiting element is provided inside the cavity of the outer rod, and the limiting element is located near the first opening of the outer rod;

[0035] The limiting component is configured to limit the sliding bracket when the sliding bracket slides to the position of the limiting component;

[0036] The cable is a flexible circuit board.

[0037] In any of the above embodiments, the outer rod and the inner rod are straight or curved rods that are nested together. There are multiple inner rods, and the multiple inner rods are nested together in order of decreasing diameter.

[0038] The cable is sequentially threaded between the outer rod and the inner rod and connected to the light source;

[0039] The tension force exerted on the cable by the tensioning component is less than the maximum static friction force between two adjacent inner rods.

[0040] In any of the above embodiments, a sliding mechanism is further provided inside the outer rod. The sliding mechanism includes a sliding bracket disposed in the cavity of the outer rod. The sliding bracket is provided with a plurality of bearings. The bearings are configured to reduce the friction between the sliding bracket and the outer rod when the sliding bracket slides in the cavity of the outer rod.

[0041] Among them, the multiple inner rods include the end inner rod connected to the light source and the beginning inner rod fixedly connected to the end of the sliding bracket. The cable passes through the sliding bracket and the multiple inner rods in sequence and is connected to the light source. When the inner rods are driven to slide relative to the outer rods, the inner rods can drive the sliding bracket to slide in the cavity of the outer rod.

[0042] The first fixing component is disposed on the surface of the inner rod connected to the light source or on the surface of the light source, and is configured to fix the cable at the first fixing position;

[0043] The first fixing component includes a first pressure block disposed on the surface of the inner rod or the surface of the light source, and the first fixing position of the cable is fixed on the surface of the inner rod or the surface of the light source by the first pressure block.

[0044] In any of the above embodiments, the lighting device is a lamp, and the lamp is a table lamp;

[0045] The tabletop lighting fixture includes a vertical pole, with an outer pole connected to the top and a lamp holder connected to the bottom;

[0046] The lamp holder has a power output section. One end of the cable is connected to the power output section of the lamp holder, and the other end passes through the vertical rod, outer rod and inner rod in sequence to connect to the light source.

[0047] In any of the above embodiments, the top of the vertical rod and the bottom of the outer rod are connected by a connector;

[0048] The cable passes through the connector, and the second fixing component is disposed on the surface of the connector. The second fixing component is configured to fix the cable passing through the connector at a second fixed position.

[0049] The second fixing component includes a second pressure block disposed on the surface of the connector.

[0050] In any of the above embodiments, the bottom of the outer rod is provided with a through groove that communicates with the cavity of the outer rod, the connector is installed in the through groove, and the corner of the through groove wall is rounded.

[0051] In any of the above embodiments, the cavity inside the outer rod includes a first cavity and a second cavity disposed on both sides of the through groove, the first cavity being close to the first opening of the outer rod and the second cavity being far away from the first opening of the outer rod;

[0052] The slider is configured to always be in the second cavity when the inner rod slides relative to the outer rod.

[0053] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0054] I. This invention provides a light source whose illumination area can be adjusted via a sliding device on the lamp post. This allows for adjustable illumination area of ​​the lighting equipment, and also enables the inner pole to retract within the outer pole, reducing packaging size. The wiring can be hidden and stored inside the pole, with no exposed wiring. The lighting equipment has a simple shape and a good appearance. Attached Figure Description

[0055] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0056] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the lighting device of the present invention;

[0057] Figure 2 This is a schematic cross-sectional view of an embodiment of the lighting device of the present invention;

[0058] Figure 3 for Figure 2 An enlarged structural diagram at point A in the embodiment;

[0059] Figure 4 This is an exploded structural diagram of an embodiment of the lighting device of the present invention;

[0060] Figure 5 for Figure 4 Enlarged structural diagram at point B in the embodiment;

[0061] Figure 6 This is a cross-sectional view of the sliding member installed in the outer rod in an embodiment of the lighting device of the present invention;

[0062] Figure 7 for Figure 4 An enlarged structural diagram at point C in the embodiment;

[0063] Figure 8 This is a partial cross-sectional structural schematic diagram of an embodiment of the lighting device of the present invention;

[0064] Figure 9 for Figure 8 An enlarged structural diagram at point D in the embodiment;

[0065] Figure 10 This is a cross-sectional view of the junction of the outer rod and the inner rod in an embodiment of the lighting device of the present invention;

[0066] Figure 11 This is a cross-sectional view of the friction plate in an embodiment of the lighting device of the present invention;

[0067] Wherein: 1-Outer rod; 2-Inner rod; 3-Light source; 4-Cable; 5-Tensioning assembly; 51-Sliding component; 511-Central shaft; 512-Wheel-shaped component; 5121-First boss; 52-Elastic component; 6-First fixing assembly; 61-Sliding bracket; 62-Bearing; 63-Friction pad; 631-Protrusion; 632-Adjusting screw; 7-Second fixing assembly; 8-Vertical rod; 9-Lamp holder; 10-Connector. Detailed Implementation

[0068] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the invention as detailed in the appended claims.

[0069] Current lighting equipment with multiple joints suffers from wire twisting issues during rotation. Combined with the limited space at the pivot point, the wires often protrude from the lamp post, resulting in a poor appearance. This invention addresses this problem by providing a light source whose illumination area can be adjusted via a sliding device on the lamp post. This allows for adjustable illumination, and also enables the inner pole to retract within the outer pole, reducing packaging size. The wires can be hidden and stored inside the pole, preventing exposure and resulting in a streamlined and aesthetically pleasing lighting device.

[0070] The following is in conjunction with the appendix Figure 1-11 The technical solution of this embodiment is described in detail. Unless otherwise specified, the following implementation methods and embodiments can be combined with each other.

[0071] Example

[0072] like Figure 1 and Figure 8 As shown, this embodiment proposes a lighting device, including:

[0073] Outer rod 1, the inner cavity of outer rod 1 is formed and one end of outer rod 1 (i.e. Figure 1 The opening at the right end of the outer rod 1 forms a first opening that communicates with the cavity;

[0074] The inner rod 2 is at least partially sleeved in the cavity of the outer rod 1 through the first opening and can be driven to slide relative to the outer rod 1. Specifically, when the inner rod 2 slides relative to the outer rod 1, it can be completely retracted into the outer rod 1, or only a portion of the inner rod 2 can be retracted into the outer rod 1. The specific configuration can be configured according to the needs of the actual product. In this embodiment of the invention, the lengths of the outer rod 1 and the inner rod 2 are not specifically limited.

[0075] It is worth noting that when the inner rod 2 slides relative to the outer rod 1, it can be driven by a driving component or manually. When the inner rod 2 is driven to slide relative to the outer rod 1, the driving component can be any driving component with a driving effect, such as a drive motor, cylinder, or push rod. In this embodiment, the specific form of the driving component is not limited. Furthermore, when driving the inner rod 2 to slide relative to the outer rod 1, the driving component can not only drive the inner rod 2 to move linearly relative to the outer rod 1, but also drive the inner rod 2 to move in an arc relative to the outer rod 1. Specifically, the specific driving component can be selected according to the shape of the outer rod 1 and the inner rod 2. In this embodiment, the outer rod 1 and the inner rod 2 are specifically described as straight rods. The manual driving method used when driving the inner rod 2 to slide relative to the outer rod 1 involves manually applying force to the inner rod 2 to achieve the sliding of the inner rod 2 relative to the outer rod 1.

[0076] The light source 3 is located at the end of the inner rod 2, and the position of the light source 3 can be changed when the inner rod 2 is driven to slide relative to the outer rod 1, thereby realizing the adjustment of the position of the illumination area of ​​the light source 3;

[0077] Cable 4, one end of which is connected to the power output unit (not shown in the figure), and the other end is passed through the outer rod 1 and the inner rod 2 and connected to the light source 3 to supply power to the light source 3;

[0078] Tensioning component 5 is used to pull cable 4 so that cable 4 in outer rod 1 and inner rod 2 is always in a taut state. The tensioning force of tensioning component 5 on cable 4 is less than the maximum static friction between outer rod 1 and inner rod 2, so that when the driving force on inner rod 2 is removed, the position of inner rod 2 relative to outer rod 1 can be fixed.

[0079] In this embodiment of the invention, by setting a tensioning component 5, when the inner rod 2 slides relative to the outer rod 1, that is, when the illumination area of ​​the light source 3 is changed, the cable 4 placed in the outer rod 1 and the inner rod 2 is always kept in a tensioned state, thereby avoiding the cable 4 from twisting when adjusting the illumination area of ​​the light source 3. At the same time, the cable in this embodiment of the invention is passed through the outer rod 1 and the inner rod 2, which can ensure that the wires of the lighting device are not exposed, thereby achieving the effect of a simple appearance of the lighting device.

[0080] Specifically, such as Figure 2 and Figure 3 As shown, the tensioning assembly 5 mentioned above includes a sliding member 51 that is slidably disposed in the cavity of the outer rod 1. The sliding member 51 can slide along the cavity setting path inside the outer rod 1. One end of the cable 4 is connected to the power output part (not shown in the figure), and the other end passes around the sliding member 51 and is connected to the light source 3.

[0081] More specifically, the tensioning assembly 5 also includes an elastic element 52 disposed in the cavity of the outer rod 1. The elastic element 52 and the light source 3 are disposed on both sides of the sliding element 51, wherein one end of the elastic element 52 is connected to the outer rod 1 and the other end is connected to the sliding element 51.

[0082] The elastic force of the elastic element 52 is applied to the cable 4 through the sliding element 51.

[0083] When a force is applied to the inner rod 2 or the light source 3 in the first direction, the light source 3 can drive the cable 4 to move in the first direction. Since the cable 4 passes around the slider 51 and is connected to the light source 3, and the elastic force of the elastic member 52 acts on the cable 4 through the slider 51, the elastic member 52 will apply a force opposite to the first direction to ensure that the cable 4 is always in a taut state, thereby avoiding the problem of bending or twisting of the cable 4.

[0084] In any of the above embodiments, such as Figures 3-5 As shown, a wheel-shaped member 512 is provided on the surface of the sliding member 51, wherein one end of the elastic member 52 is connected to the wheel-shaped member 512 and the other end is connected to the outer rod 1;

[0085] Two sets of wheel-shaped components 512 are provided, and the two sets of wheel-shaped components 512 are arranged opposite to each other on both sides of the elastic member 52, wherein:

[0086] Each set of wheel-shaped components 512 is connected to a corresponding elastic component 52;

[0087] The wheel-shaped component 512 is also provided with a first boss 5121, and one end of the elastic component 52 near the sliding component 51 is fixed on the first boss 5121;

[0088] Specifically, the tensioning assembly 5 also includes a fixing frame 53 on the outer rod 1, and the end of the elastic member 52 away from the sliding member 51 is fixed on the fixing frame 53.

[0089] In any of the above embodiments, such as Figure 5 As shown, the aforementioned sliding member 51 includes a pulley slidably disposed in the cavity of the outer rod 1, wherein the pulley includes a central shaft 511, and the aforementioned two sets of wheel-shaped members 512 are respectively disposed at both ends of the central shaft 511;

[0090] One end of cable 4 is connected to the power output unit, and the other end passes around the central shaft 511 and is connected to the light source 3.

[0091] like Figure 5 As shown, the elastic element 52 mentioned above includes a tension spring, wherein one end of the tension spring is fixedly connected to the outer rod 1 and the other end is fixedly connected to the wheel-shaped member 512;

[0092] like Figure 4 and Figure 8As shown, the aforementioned fixing bracket 53 includes a tension spring bracket. The end of the outer rod 1 away from the first opening (i.e., the right end opening of the outer rod 1) forms a second opening (i.e., the left end of the outer rod 1 also forms an opening). The tension spring bracket is located at the end of the outer rod 1 away from the first opening and at the second opening (i.e., the tension spring bracket is located at the left end opening of the outer rod 1). The end of the tension spring away from the pulley is fixed to the tension spring bracket to fix the left end of the tension spring.

[0093] In any of the above embodiments, such as Figure 6 As shown, a second boss 11 is formed at the bottom of the cavity of the outer rod 1, and a groove is formed between the side of the second boss 11 and the side of the cavity of the outer rod 1. Two sets of wheel-shaped members 512 located on the sliding member 51 are respectively disposed in the grooves on both sides of the second boss 11. The second boss plays a guiding role during the sliding of the pulley, increasing the stability of the pulley sliding in the outer rod 1 and preventing the pulley from tilting or getting stuck during the sliding process.

[0094] In any of the above embodiments, such as Figure 4 and Figure 7 As shown, the lighting device in this embodiment of the invention further includes a first fixing component 6 and a second fixing component 7;

[0095] The cable 4 in this embodiment of the invention has a first fixed position and a second fixed position;

[0096] The first fixing component 6 is used to fix the cable 4 at the first fixing position, and the second fixing component 7 is used to fix the cable 4 at the second fixing position.

[0097] The cable segment located between the first fixed position and the second fixed position serves as the tensioning segment of the cable 4, wherein the tensioning component 5 acts on the tensioning segment of the cable 4 to keep the cable 4, which is located in the outer rod 1 and the inner rod 2, always in a tensioned state.

[0098] In this embodiment of the invention, by setting a first fixing component 6 and a second fixing component 7 to fix two positions (i.e., the first fixed position and the second fixed position) of the cable 4, the tensioning section of the cable 4 can be limited, preventing the tensioning force of the tensioning component 5 from acting on the non-tensioning sections of the cable 4 (e.g., the section connecting the cable 4 to the light source 3, the section connecting the cable 4 to the power output unit), thus preventing unstable connection between the cable 4 and the light source 3 or the power output unit, or even disconnection, and improving connection stability. At the same time, by limiting the tensioning position of the cable by the first and second fixing components, the cable 4 can also be prevented from being repeatedly pulled and stretched under the action of the tensioning component 5, resulting in redundant length, affecting the tensioning effect of the tensioning component, and causing the cable 4 to fail to be effectively tensioned.

[0099] In any of the above embodiments, such as Figure 4 , Figure 7, Figure 9 and Figure 10 As shown, in this embodiment of the invention, the outer rod 1 is also provided with a sliding mechanism, wherein the sliding mechanism includes a sliding bracket 61 disposed in the cavity of the outer rod 1, and a plurality of bearings 62 are provided on the sliding bracket 61. The bearings 62 are configured to reduce the friction between the sliding bracket 61 and the outer rod 1 when the sliding bracket 61 slides in the cavity of the outer rod 1, so as to drive the sliding bracket 61 to slide smoothly. Preferably, the bearings 62 mentioned above are rollers.

[0100] The end of the sliding bracket 61 is fixedly connected to the end of the inner rod 2. The cable 4 passes through the sliding bracket 61 and the inner rod 2 in sequence and is connected to the light source 3. When the inner rod 2 is driven to slide relative to the outer rod 1, the inner rod 2 can drive the sliding bracket 61 to slide in the cavity of the outer rod 2.

[0101] The aforementioned first fixing component 6 is disposed on the surface of the sliding bracket 61 and is configured to fix the cable 4 passing through the sliding bracket 61 at the first fixing position;

[0102] The first fixing component 6 includes a first pressure block disposed on the surface of the sliding bracket 61. The first fixing position of the cable 4 is fixed on the sliding bracket 61 by the first pressure block, and the first pressure block is fixed to the surface of the sliding bracket by screws.

[0103] In any of the above embodiments, such as Figure 7 and Figure 9 As shown, the lighting device in this embodiment of the invention also includes a friction plate 63 disposed in the cavity of the outer rod 1. The friction plate 63 is configured to provide friction force when the inner rod 2 slides relative to the outer rod 1.

[0104] The friction force of the friction plate 63 can be adjusted to change the friction force when the inner rod 2 slides relative to the outer rod 1.

[0105] Of course, in some embodiments not shown, the friction plate 63 can be omitted, and the problem to be solved in the embodiments of the present invention can be solved by the friction force formed between the outer rod 1 and the inner rod 2 alone.

[0106] In a preferred embodiment of the invention, in order to make the friction force of the friction plate 63 adjustable, the friction plate 63 is provided to provide the friction force when the inner rod 2 slides relative to the outer rod 1.

[0107] In any of the above embodiments, such as Figure 7 and Figure 9 As shown, the aforementioned friction plate 63 is disposed on the surface of the sliding bracket 61 and forms friction with the inner wall of the outer rod 1;

[0108] like Figure 11As shown, the friction plate 63 has a protrusion 631 on its top, which is used to contact the inner wall of the outer rod 1. The friction plate 63 has an adjusting screw 632 at its bottom. The position of the protrusion 631 can be adjusted by the adjusting screw 632 to change the friction between the friction plate 3 and the outer rod 1.

[0109] It is worth noting that the "adjustable protrusion" mentioned in the embodiments of the present invention refers to the fact that the height of the rib can be adjusted as needed during the factory production stage or the design stage, thereby changing the preload of the friction plate 63 and the outer lamp post 1, and thus achieving the purpose of changing the friction force.

[0110] In any of the above embodiments, in order to prevent the inner rod 2 from sliding out of the outer rod 1, a limiting member is also provided in the cavity of the outer rod 1 in this embodiment of the invention, and the limiting member is located close to the first opening of the outer rod 1.

[0111] The limiting component is configured to limit the sliding bracket 61 when it slides to the position of the limiting component. Specifically, the limiting component is a stop screw located at the bottom right end of the outer rod 1. At least one stop screw is provided, and the sliding bracket 61 can no longer slide when it slides to the right to the position of the stop screw.

[0112] In any of the above embodiments, the cable 4 mentioned above is a flexible printed circuit board (i.e., FPC wire). As those skilled in the art know, FPC wire has good toughness and bendability. By setting the material of the cable 4 to FPC wire, the service life of the lighting equipment can be improved. In the embodiments of the present invention, the FPC material cable 4 can be used as both a power supply conductor and a pull strap when the inner rod 2 is pulled to slide.

[0113] It should be noted that the outer rod 1 and inner rod 2 mentioned above are straight rods that are nested together, and the sliding of the inner rod 2 relative to the outer rod 1 is described with respect to one outer rod 1 and one inner rod 2. Of course, in some embodiments not shown, there may be multiple inner rods 2 mentioned above.

[0114] Specifically, when there are multiple inner rods 2, the multiple inner rods 2 are nested together in order of decreasing diameter; the cable 4 is sequentially threaded between the outer rod 1 and the multiple inner rods 2 and connected to the light source 3;

[0115] The tensioning component 5 exerts a pulling force on the cable 4 that is less than the maximum static friction between the two adjacent inner rods 2. This allows for multi-level telescopic adjustment of the lighting equipment, increasing the adjustable lighting area without increasing the size of the lighting equipment.

[0116] More specifically, when there are multiple inner rods 2, a sliding mechanism is also provided inside the outer rod 1. The sliding mechanism includes a sliding bracket 61 provided in the cavity of the outer rod 1. The sliding bracket 61 is provided with multiple bearings 62. The bearings 62 are configured to reduce the friction between the sliding bracket 61 and the outer rod 1 when the sliding bracket 61 slides in the cavity of the outer rod 1.

[0117] When there are two inner rods 2, the inner rod 2 includes an end inner rod and a beginning inner rod. The end inner rod is fixedly connected to the light source 3, and the beginning inner rod is fixedly connected to the end of the sliding bracket. The cable 4 passes through the sliding bracket 61 and multiple inner rods 2 in sequence and is connected to the light source 3. When the inner rod 2 is driven to slide relative to the outer rod 1, the inner rod 2 can drive the sliding bracket 61 to slide in the cavity of the outer rod 1.

[0118] When there are two or more inner rods 2, the inner rod 2 includes not only the end inner rod and the beginning inner rod, but also an intermediate connecting rod disposed between the end inner rod and the beginning inner rod. There can be multiple intermediate connecting rods. When there are multiple intermediate connecting rods, the multiple intermediate connecting rods are nested together, and the intermediate connecting rod closer to the end inner rod can slide relative to the end inner rod, and the intermediate connecting rod closer to the beginning inner rod can slide relative to the beginning inner rod.

[0119] The first fixing component 6 is disposed on the surface of the inner rod connected to the light source or on the surface of the light source, and is configured to fix the cable 4 at the first fixing position;

[0120] The first fixing component 6 includes a first pressure block disposed on the surface of the inner rod or the surface of the light source, and the first fixing position of the cable 4 is fixed to the surface of the inner rod or the surface of the light source by the first pressure block.

[0121] In any of the above embodiments, the lighting device mentioned above is a lighting lamp, wherein the outer rod 1 mentioned above serves as the outer lamp post of the lighting lamp, the inner rod 2 mentioned above serves as the inner lamp post of the lighting lamp, and the light source 3 mentioned above serves as the lamp head of the lighting lamp, and the lamp head and the inner lamp post are fixed with screws.

[0122] More specifically, the lighting mentioned above refers to table lamps. When the lighting is a table lamp, such as... Figure 1 As shown, the table lamp includes a vertical rod 8, with an outer rod 1 connected to the top of the vertical rod 8 and a lamp holder 9 connected to the bottom;

[0123] The lamp holder 9 is equipped with components such as a power output section, a main control board, and an interactive platform. One end of the cable 4 is connected to the power output section of the lamp holder 9, and the other end passes through the vertical rod 8, the outer rod 1, and the inner rod 2 in sequence to connect to the light source 3.

[0124] In any of the above embodiments, such as Figures 1-4As shown, the top of the vertical rod 8 and the bottom of the outer rod 1 are connected by a connector 10. It is worth noting that the vertical rod 8 and the outer rod 1 can be fixedly connected or rotatably connected by the connector 10. When the vertical rod 8 and the outer rod 1 are rotatably connected by the connector 10, the adjustable lighting area of ​​the lamp head can be further increased.

[0125] The cable 4 passes through the connector 10, and the second fixing component 7 is disposed on the surface of the connector 10 and configured to fix the second fixing position of the cable 4 passing through the connector 10.

[0126] Specifically, the second fixing component 7 includes a second pressure block disposed on the surface of the connector 10. The second pressure block is fixed to the connector 10 by screws for fixing the second fixing position of the cable 4.

[0127] In any of the above embodiments, such as Figure 3 As shown, the bottom of the outer rod 1 is provided with a through groove that communicates with the cavity of the outer rod 1. The connector 10 is installed in the through groove, and the corners of the groove wall are rounded. By making the corners of the groove wall rounded, the cable 4 can avoid greater wear when passing through the corners of the groove, thus improving the service life of the cable 4.

[0128] In any of the above embodiments, such as Figure 3 As shown, the cavity inside the outer rod 1 includes a first cavity and a second cavity located on both sides of the through groove. The first cavity is close to the first opening of the outer rod 1, and the second cavity is far away from the first opening of the outer rod 1.

[0129] The slider 51 is configured to always be in the second cavity when the inner rod 2 slides relative to the outer rod 1.

[0130] To better understand the working principle of the lighting device in the embodiments of the present invention, the following is a detailed explanation. Figure 1-10 The following is a detailed explanation using a table lamp as an example:

[0131] like Figure 1-10 As shown, the table lamp of the present invention includes a base (i.e., lamp holder 9), a vertical lamp post (i.e., vertical rod 8), an outer lamp post (i.e., outer rod 1), an inner lamp post (i.e., outer rod 2), and a lamp head (i.e., light source 3). The lamp head is fixed on the inner lamp post, the outer lamp post has a hollow structure, and the inner lamp post can slide inside the inner cavity of the outer lamp post to realize the adjustment of the position of the lamp head illumination area.

[0132] The vertical light pole and the outer light pole can be fixed together by the connector 10. Additionally, a tension spring bracket, tension springs, pulleys, a sliding bracket 61, and an inner light pole are installed inside the outer light pole. The FPC cable (i.e., cable 4) originates from the base, passes through the vertical light pole, connector 10, around the central axis of the pulley, through the outer light pole, sliding bracket 61, and inner light pole, and finally reaches the lamp head to supply power. Two specific length positions in the middle of the FPC are fixed to the connector 10 and sliding bracket 61 by the first pressure block, second pressure block, and screws. The tension spring bracket contains two tension springs, which are fixed to both sides of the pulley by screws. The tension springs can pull the pulley to slide towards the tension spring bracket.

[0133] Multiple bearings 62 are installed on the sliding bracket 61. The sliding bracket 61 and one end of the inner light pole are fixedly connected by screws. The sliding bracket 61 can drive the inner light pole to slide smoothly inside the outer light pole. A friction plate 63 is also provided on the top of the sliding bracket 61. Ribs are provided on the friction plate 63. The friction force between the friction plate 63 and the inner wall of the outer light pole can be adjusted by adjusting the height of the ribs. The FPC wire is fixed at two positions on the connector 10 and the sliding bracket 61, respectively.

[0134] like Figure 1 and Figure 8 As shown, when the tension spring pulls the pulley towards the tension spring bracket, the FPC wire passing over the pulley is also pulled to the left. Simultaneously, the FPC wire pulls the sliding bracket 61, the inner lamp post, and the lamp head to the left, achieving the effect of the inner lamp post retracting inside the outer lamp post, and also achieving the effect of adjusting the lamp head's illumination area to the left. At the same time, when the tension spring drives the pulley and FPC to slide to the left, the friction between the friction plate 63 and the inner wall of the outer lamp post provides damping, preventing the FPC from driving the inner lamp post to slide too quickly. Correspondingly, when the inner lamp post is pulled out towards the lamp head, the sliding bracket 61 drives the FPC to move to the right, the FPC drives the pulley to slide to the right, the tension spring is stretched, and the damping provided by the friction plate 63 and the inner wall of the outer lamp post allows the inner lamp post to stop at any position.

[0135] like Figure 6 The cross-sectional view shown illustrates the positional relationship between the various components. The tension spring bracket, pulley, sliding bracket 61, and inner lamp post are located inside the outer lamp post. The FPC wire passes through the vertical lamp post, enters the inner cavity of the outer lamp post to the left, and is fixed to the sliding bracket after passing around the central axis of the slide.

[0136] At the bottom right end of the outer light pole, a stop screw is also installed. When the sliding bracket 61 slides to the right to the position of the stop screw, it can no longer slide, which can prevent the inner light pole from sliding out of the outer light pole.

[0137] like Figure 2The cross-sectional view shown further illustrates the positional relationships and structural features of the various components. A tension spring bracket is located at one end of the outer light pole, with the tension spring extending and fixed to both sides of the pulley. A groove is provided at the bottom of the outer light pole and the location where the connector 10 is fixed, allowing the FPC wire to enter the outer light pole from the vertical light pole through this hole. The sliding bracket 61 is fixedly connected by multiple screws located on the left and right sides of the inner light pole.

[0138] Figure 6 The diagram shows a cross-sectional view of the external light pole of the present invention. A second protrusion is provided at the bottom of the inner cavity of the external light pole. Two circular wheels of the pulley are provided on both sides of the second protrusion. The second protrusion plays a guiding role during the sliding of the pulley, increasing the stability of the pulley sliding on the external light pole and preventing the pulley from tilting or getting stuck during the sliding process.

[0139] The pulley has cylindrical wheel-shaped components on both sides for easy sliding along the inner cavity of the inner lamp post. A central shaft is located in the middle, allowing the FPC to bypass the central shaft and pull the sliding bracket along the pulley's central shaft. Each side of the pulley also has a first boss with screw holes, where two tension springs are fixed with screws.

[0140] Figure 10 This is a cross-sectional view of the junction of the outer and inner light poles according to the present invention. The inner light pole is disposed inside the outer light pole and has a certain sliding gap with the inner wall of the outer light pole. The sliding bracket 61 is at least partially disposed inside the inner light pole, and is fixed to the inner light pole by multiple screws disposed on both sides of the inner light pole.

[0141] The base is equipped with a main control board and an interactive platform, and the lamp head is equipped with a lamp panel. The lamp head and the inner lamp pole are fixed with screws.

[0142] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0143] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

[0144] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0145] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A lighting device, characterized in that, include: An outer rod (1) has a cavity inside and a first opening connected to the cavity at one end. The inner rod (2) is at least partially sleeved in the cavity of the outer rod (1) through the first opening and the inner rod (2) can be driven to slide relative to the outer rod (1); Light source (3), the position of which can be changed when the inner rod is driven to slide relative to the outer rod; A cable (4) has one end connected to the power output unit and the other end passing through the outer rod (1) and the inner rod (2) to connect to the light source (3) for supplying power to the light source (3); Tensioning assembly (5) is used to pull the cable (4) so ​​that the cable (4) in the outer rod (1) and the inner rod (2) is always in a taut state, wherein the tensioning assembly (5) exerts a pulling force on the cable (4) less than the maximum static friction between the outer rod (1) and the inner rod (2).

2. The lighting device according to claim 1, characterized in that, The tensioning assembly (5) includes a sliding member (51) that is slidably disposed in the cavity of the outer rod (1). One end of the cable (4) is connected to the power output section, and the other end passes around the sliding member (51) and is connected to the light source (3). The tensioning assembly (5) further includes an elastic element (52) disposed in the cavity of the outer rod (1), the elastic element (52) and the light source (3) are disposed on both sides of the sliding element (51), wherein one end of the elastic element (52) is connected to the outer rod (1) and the other end is connected to the sliding element (51); The elastic force of the elastic element (52) is applied to the cable (4) through the sliding element (51).

3. The lighting device according to claim 2, characterized in that, The surface of the sliding member (51) is provided with a wheel-shaped component (512), one end of the elastic member (52) is connected to the wheel-shaped component (512), and the other end is connected to the outer rod (1); The wheel-shaped component (512) is provided in two sets, and the two sets of wheel-shaped components (512) are arranged opposite to each other on both sides of the elastic member (52), wherein: Each set of wheel-shaped components (512) is connected to one elastic component (52); The wheel-shaped member (512) is also provided with a first boss (5121), and one end of the elastic member (52) near the sliding member (51) is fixed on the first boss (5121); The tensioning assembly (5) also includes a fixing frame (53) disposed on the outer rod (1), and one end of the elastic member (52) away from the sliding member (51) is fixed on the fixing frame (53).

4. The lighting device according to claim 3, characterized in that, The sliding member (51) includes a pulley that is slidably disposed in the cavity of the outer rod (1). The pulley includes a central shaft (511), and two sets of wheel-shaped components (512) are disposed at both ends of the central shaft (511). One end of the cable (4) is connected to the power output unit, and the other end passes around the central shaft (511) and is connected to the light source (3); The elastic element (52) includes a tension spring, one end of which is fixedly connected to the outer rod (1) and the other end is fixedly connected to the wheel-shaped component (512); The fixing frame (53) includes a tension spring bracket. The outer rod (1) has a second opening at one end away from the first opening. The tension spring bracket is located at the end of the outer rod (1) away from the first opening and at the second opening. The end of the tension spring away from the pulley is fixed to the tension spring bracket.

5. The lighting device according to claim 4, characterized in that, A second boss (11) is formed at the bottom of the cavity of the outer rod (1). A groove is formed between the side of the second boss (11) and the side of the cavity of the outer rod (1). Two sets of wheel-shaped members (512) located on the sliding member (51) are respectively disposed in the grooves on both sides of the second boss (11).

6. The lighting device according to claim 5, characterized in that, The lighting device also includes a first fixing component (6) and a second fixing component (7). The cable (4) has a first fixed position and a second fixed position; The first fixing component (6) is used to fix the cable (4) at a first fixed position, and the second fixing component (7) is used to fix the cable (4) at a second fixed position; The cable segment located between the first fixed position and the second fixed position serves as the tensioning segment of the cable (4), wherein the tensioning component (5) acts on the tensioning segment of the cable (4) to keep the cable (4) in the outer rod (1) and inner rod (2) always in a tensioned state.

7. The lighting device according to claim 6, characterized in that, The outer rod (1) is also provided with a sliding mechanism. The sliding mechanism includes a sliding bracket (61) provided in the cavity of the outer rod (1). The sliding bracket (61) is provided with a plurality of bearings (62). The bearings (62) are configured to reduce the friction between the sliding bracket (61) and the outer rod (1) when the sliding bracket (61) slides in the cavity of the outer rod (1). The end of the sliding bracket (61) is fixedly connected to the end of the inner rod (2). The cable (4) passes through the sliding bracket (61) and the inner rod (2) in sequence and is connected to the light source (3). When the inner rod (2) is driven to slide relative to the outer rod (1), the inner rod (2) can drive the sliding bracket (61) to slide in the cavity of the outer rod (1). The first fixing component (6) is disposed on the surface of the sliding bracket (61) and configured to fix the cable (4) passing through the sliding bracket (61) at a first fixing position; The first fixing component (6) includes a first pressure block disposed on the surface of the sliding bracket (61), and the first fixing position of the cable (4) is fixed on the sliding bracket (61) by the first pressure block.

8. The lighting device according to claim 7, characterized in that, The lighting device further includes a friction plate (63) disposed in the cavity of the outer rod (1), the friction plate (63) being configured to provide friction when the inner rod (2) slides relative to the outer rod (1); The friction plate (63) is disposed on the surface of the sliding bracket (61) and forms the friction force between it and the inner wall of the outer rod (1); The friction plate (63) is provided with protrusions; A limiting member is provided inside the cavity of the outer rod (1), and the limiting member is located close to the first opening of the outer rod (1); The limiting member is configured to limit the sliding bracket (61) when the sliding bracket (61) slides to the position of the limiting member; The cable (4) is a flexible circuit board.

9. The lighting device according to claim 6, characterized in that, The outer rod (1) and the inner rod (2) are straight or curved rods that are nested together. There are multiple inner rods, and the multiple inner rods are nested together in order of decreasing diameter. The cable is sequentially threaded between the outer rod and multiple inner rods and connected to the light source; The tension force exerted by the tensioning component (5) on the cable (4) is less than the maximum static friction force between the two adjacent inner rods.

10. The lighting device according to claim 9, characterized in that, The outer rod (1) is also provided with a sliding mechanism. The sliding mechanism includes a sliding bracket (61) provided in the cavity of the outer rod (1). The sliding bracket (61) is provided with a plurality of bearings (62). The bearings (62) are configured to reduce the friction between the sliding bracket (61) and the outer rod (1) when the sliding bracket (61) slides in the cavity of the outer rod (1). Among them, the multiple inner rods include an end inner rod connected to the light source and an beginning inner rod fixedly connected to the end of the sliding bracket (61). The cable (4) passes through the sliding bracket (61) and the multiple inner rods (2) in sequence and is connected to the light source (3). When the inner rod (2) is driven to slide relative to the outer rod (1), the inner rod (2) can drive the sliding bracket (61) to slide in the cavity of the outer rod (1). The first fixing component (6) is disposed on the surface of the inner rod connected to the light source or on the surface of the light source, and is configured to fix the cable (4) at the first fixing position; The first fixing component (6) includes a first pressure block disposed on the surface of the inner rod or the surface of the light source, and the first fixing position of the cable (4) is fixed on the surface of the inner rod or the surface of the light source by the first pressure block.

11. The lighting device according to claim 8 or 10, characterized in that, The lighting device is a lighting lamp; The lighting fixture is a tabletop lighting fixture; The table lamp includes a vertical rod (8), the top of which is connected to the outer rod (1), and the bottom of which is connected to a lamp holder (9). The lamp holder (9) is provided with a power output section. One end of the cable (4) is connected to the power output section of the lamp holder (9), and the other end passes through the vertical rod (8), the outer rod (1) and the inner rod (2) in sequence to connect to the light source (3).

12. The lighting device according to claim 11, characterized in that, The top of the vertical rod (8) is connected to the bottom of the outer rod (1) by a connector (10); The cable (4) is inserted through the connector (10), and the second fixing component (7) is disposed on the surface of the connector (10). The second fixing component (7) is configured to fix the second fixing position of the cable (4) inserted through the connector (10). The second fixing component (7) includes a second pressure block disposed on the surface of the connector (10).

13. The lighting device according to claim 12, characterized in that, The bottom of the outer rod (1) is provided with a through groove that communicates with the cavity of the outer rod (1). The connector (10) is installed in the through groove and the corner of the through groove wall is rounded.

14. The lighting device according to claim 13, characterized in that, The cavity inside the outer rod (1) includes a first cavity and a second cavity located on both sides of the through groove. The first cavity is close to the first opening of the outer rod (1), and the second cavity is far away from the first opening of the outer rod (1). The slider (51) is configured to always be in the second cavity when the inner rod (2) slides relative to the outer rod (1).

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