A lifting type LED lamp

Abstract

The application discloses a lifting type LED lamp and belongs to the technical field of lamps, which comprises a mounting frame mounted in a ceiling, a lifting LED lamp is inserted into the bottom of the ceiling, a winding unit is rotationally connected in the mounting frame through a first bearing seat, the winding unit comprises a shaft pipe mounted in the bearing seat, a winding wheel is sleeved on the shaft pipe, the lifting LED lamp is realized up and down telescopic through a pull rope wound on the winding wheel; the lifting LED lamp, the winding unit and the hierarchical pushing unit are arranged, multi-stage independent adjustment function is realized, the hierarchical pushing unit and three groups of winding wheels are cooperatively designed, independent lifting control of the lamp holder, the lower inner conical cover and the whole lamp is realized, the diversified lighting demand from fan-shaped light to columnar light is met, meanwhile, in the non-working state, the toughness sheet automatically closes the outlet of the straight cylinder cover through elastic recovery, dust is prevented from entering the inside of the straight cylinder cover, light efficiency reduction and component aging caused by dust on the LED lamp are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lamps, in particular to a lifting type LED lamp. BACKGROUND

[0002] As energy-saving and environment-friendly lighting equipment, LED lamps have been widely used in daily life. However, there are two technical bottlenecks in traditional lamps: first, the adjustment mechanism is single, and only the overall displacement can change the lighting height, which cannot realize the independent control of the local components of the lamp body (such as the reflector and the light source module), limiting the diversification of light form; second, the exposed structure design causes the lamp to be continuously exposed to environmental dust in the non-working state, especially the surface dust problem of the precision optical components and the light-emitting unit, which not only reduces the light efficiency output efficiency, but also accelerates the aging of the components due to long-term static adsorption, directly affecting the service life and lighting quality of the equipment. SUMMARY

[0003] The purpose of the present application is to solve the problem of single adjustment mechanism of traditional lamps, and a lifting type LED lamp is proposed.

[0004] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0005] A lifting type LED lamp, comprising a mounting frame mounted in a ceiling, a lifting LED lamp being inserted into the ceiling, and a winding unit being rotatably connected in the mounting frame through a first bearing seat;

[0006] The winding unit comprises a shaft pipe mounted in the bearing seat, a winding wheel being sleeved on the shaft pipe, and the lifting LED lamp being realized up and down telescopic through a pull rope wound on the winding wheel;

[0007] The lifting LED lamp comprises a straight cylinder cover inserted into the ceiling, a lower inner cone cover being inserted into the straight cylinder cover, a middle inner cone cover being slidably connected in the lower inner cone cover, a lamp holder being slidably connected in the middle inner cone cover, an LED lamp body being threadedly connected in the lamp holder, and the pull rope being equally divided into three groups, and the three groups of pull ropes being connected with the straight cylinder cover, the lower inner cone cover and the lamp holder respectively.

[0008] Further description of the above technical scheme:

[0009] The winding unit further comprises a friction block corresponding to the winding wheel, an insertion slot being formed on the outer wall of the shaft pipe and matched with the friction block, the two ends of the friction block penetrating through the insertion slot and penetrating into the shaft pipe are fixed with an extension seat, and a first spring with one end fixed to the inner wall of the shaft pipe is fixed on the extension seat.

[0010] Further description of the above technical scheme:

[0011] The winding unit further comprises a hierarchical pushing unit slidingly installed in the shaft tube;

[0012] The hierarchical pushing unit comprises a shaft rod, axial sliding blocks fixed at both ends of the shaft rod, axial sliding grooves with the axial sliding blocks matched and formed on the outer walls of both ends of the shaft tube, and a guide ring with the shaft tube matched and fixed at one end of the axial sliding grooves penetrated by the two axial sliding blocks.

[0013] One side surface of one of the first bearing seats is assembled with a second motor, the output end of the second motor and one end of the shaft tube penetrating the first bearing seat are fixed with a second gear, and the two second gears are engaged.

[0014] Further description of the above technical solution:

[0015] The outer surface of the guide ring is installed with a second bearing seat, the two side walls of the mounting frame are fixed with sliding channels, the two ends of the second bearing seat are slidingly connected in the two sliding channels, the middle part of the inner wall of the shaft tube is fixed with a support rod through bolts, and one end of the shaft rod penetrating into the shaft tube is slidingly sleeved on the support rod.

[0016] Further description of the above technical solution:

[0017] A group of left abutting blocks, three groups of continuously arranged middle abutting blocks and three groups of intermittently arranged right abutting blocks are assembled on the outer wall of the shaft rod from left to right, and the left abutting blocks, the middle abutting blocks and the right abutting blocks can be moved to the lower side of the friction blocks and then moved upward to abut against the inner wall of the winding wheel.

[0018] Further description of the above technical solution:

[0019] Both ends of the winding wheel are fixed with extension pieces, the outer surface of the extension piece is sleeved with a retaining frame with both ends fixed with the two side walls of the mounting frame, the inner wall of the retaining frame is provided with a mounting hole, a hemispherical clamping column is connected in the mounting hole through a second spring, and a plurality of limiting holes with the hemispherical clamping column matched and arranged in a circumferential array are formed on the outer wall of the extension piece.

[0020] Further description of the above technical solution:

[0021] Both sides of the side surface of the second bearing seat on the left side are fixed with left side linkage rods, both sides of the middle part of the side surface of the second bearing seat on the right side are fixed with right side linkage rods, one end of the left side linkage rod penetrates the first bearing seat, the retaining frame and the second bearing seat on the right side and extends to the outside of the second bearing seat on the right side, and one end of the right side linkage rod penetrates the first bearing seat, the retaining frame and the second bearing seat on the left side and extends to the outside of the second bearing seat on the left side.

[0022] As a further description of the above technical solution:

[0023] The side of the mounting frame close to the first bearing seat on the left side is provided with a cross frame, two first gears are rotatably connected to the cross frame through bearings, the inner sides of the left linkage rod and the right linkage rod are both provided with a rack engaged with the first gears, and the lower surface of the cross frame is provided with a first motor with an output end connected to one of the first gears.

[0024] As a further description of the above technical solution:

[0025] The lifting LED lamp further comprises a flexible sheet mounted on the top of the inner wall of the straight cylinder cover, and the flexible sheet is arranged in a circumferential array.

[0026] As a further description of the above technical solution:

[0027] A lower guide sliding groove is formed in the inner wall of the annular cavity of the lower inner conical cover, a lower guide magnet is fixed to the outer wall of the middle inner conical cover and matched with the lower guide sliding groove, an iron sheet is embedded in the top of the inner wall of the lower guide sliding groove, a middle guide sliding groove is formed in the inner wall of the annular cavity of the middle inner conical cover, a middle guide sliding block is fixed to the outer wall of the lamp holder and matched with the middle guide sliding groove, the lamp holder is slidably connected to the middle inner conical cover through the middle guide sliding block, and the middle inner conical cover is slidably connected to the lower inner conical cover through the lower guide magnet.

[0028] As described above, due to the adoption of the above technical solution, the present application has the following beneficial effects:

[0029] The lifting LED lamp, the winding unit and the hierarchical pushing unit are provided, so that the multi-stage independent adjustment function is realized, the hierarchical pushing unit and the three groups of winding wheels are cooperatively designed, the independent lifting control of the lamp holder, the lower inner conical cover and the whole lamp is realized, and the diversified lighting requirements from the fan-shaped light to the columnar light are met.

[0030] Meanwhile, in the non-working state, the flexible sheet is automatically closed to the outlet of the straight cylinder cover through elastic recovery, dust is prevented from entering the inside of the straight cylinder cover, and the light efficiency reduction and component aging caused by dust are avoided.

[0031] Further, the clamping design of the retainer, the hemispherical clamping column and the limiting hole is adopted, the second spring is automatically locked after the winding wheel stops rotating, the accidental rotation of the winding wheel caused by the weight of the lamp is prevented, and the safety is improved. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 A structure position schematic view of the inside of the mounting frame is shown.

[0033] Figure 2A structural schematic diagram of the inside of the shaft tube is shown according to an embodiment of the present application;

[0034] Figure 3 A structural schematic diagram of the inside of the shaft tube is shown according to an embodiment of the present application; Figure 2 An enlarged view of A in FIG. 4;

[0035] Figure 4 A structural schematic diagram of the inside of the shaft tube is shown according to an embodiment of the present application;

[0036] Figure 5 A structural schematic diagram of the inside of the shaft tube is shown according to an embodiment of the present application;

[0037] Figure 6 A structural schematic diagram of the inside of the shaft tube is shown according to an embodiment of the present application;

[0038] Figure 7 A structural schematic diagram of the inside of the shaft tube is shown according to an embodiment of the present application;

[0039] Figure 8 A structural schematic diagram of the inside of the shaft tube is shown according to an embodiment of the present application;

[0040] Figure 9 A structural schematic diagram of the inside of the shaft tube is shown according to an embodiment of the present application;

[0041] Figure 10 A structural schematic diagram of the inside of the shaft tube is shown according to an embodiment of the present application;

[0042] Figure 11 A structural schematic diagram of the inside of the shaft tube is shown according to an embodiment of the present application;

[0043] Figure 12 A structural schematic diagram of the inside of the shaft tube is shown according to an embodiment of the present application;

[0044] Figure 13 A structural schematic diagram of the inside of the shaft tube is shown according to an embodiment of the present application;

[0045] Figure 14 A structural schematic diagram of the inside of the shaft tube is shown according to an embodiment of the present application;

[0046] Figure 15 A structural schematic diagram of the inside of the shaft tube is shown according to an embodiment of the present application;

[0047] Figure 16The schematic diagram of the planar structure state of the LED lamp body when not in use is shown;

[0048] Figure 17 The schematic diagram of the three-dimensional structure state of the LED lamp body when not in use is shown;

[0049] Figure 18 The schematic diagram of the installation position of the support rod is shown;

[0050] Figure 19 The schematic diagram of the structure of the lifting LED lamp after installation is shown.

[0051] Legend:

[0052] 10, mounting bracket; 11, first bearing seat; 12, cross frame;

[0053] 20, lifting LED lamp; 21, straight cylinder cover; 22, lower inner conical cover; 23, middle inner conical cover; 24, lamp holder; 25, LED lamp body; 26, flexible sheet; 27, lower guide magnet;

[0054] 30, winding unit; 31, shaft tube; 32, winding wheel; 33, pull rope; 34, friction block; 35, first spring; 36, extension piece; 37, retaining frame; 38, second spring; 39, hemispherical clamping column; 310, second motor; 311, second gear; 312, support rod;

[0055] 40, hierarchical pushing unit; 41, shaft rod; 42, guide ring; 43, second bearing seat; 44, slide; 45, left abutting block; 46, middle abutting block; 47, right abutting block; 48, left side linkage rod; 49, right side linkage rod; 410, first gear; 411, first motor. DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0057] As shown in Figure 1 - Figure 19 provided by the present application:

[0058] A lifting LED lamp, comprising a mounting bracket 10 mounted in a ceiling, a lifting LED lamp 20 inserted into the bottom of the ceiling in engagement, and a winding unit 30 rotatably connected in the mounting bracket 10 in engagement through a first bearing seat 11.

[0059] The meshing winding unit 30 comprises a shaft tube 31 installed in a bearing seat, a winding wheel 32 sleeved on the meshing shaft tube 31, and the meshing lifting LED lamp 20 is realized up and down telescopic through the pull rope 33 wound on the winding wheel 32.

[0060] The meshing lifting LED lamp 20 comprises a straight cylinder cover 21 plugged in a ceiling, a lower inner cone cover 22 plugged in the meshing straight cylinder cover 21, a middle inner cone cover 23 slidingly connected in the meshing lower inner cone cover 22, a lamp holder 24 slidingly connected in the meshing middle inner cone cover 23, an LED lamp body 25 threadedly connected in the meshing lamp holder 24, and the meshing pull rope 33 is averagely divided into three groups, and the three groups of meshing pull ropes 33 are connected with the straight cylinder cover 21, the lower inner cone cover 22 and the lamp holder 24 respectively.

[0061] Preferably, the mounting frame 10 is fixed with a guide rope tube together with the middle part of the inner side wall, the guide rope tube is sleeved on the surface of the pull rope 33, and is used for guiding the pull rope 33, so that the end part of the pull rope 33 can ensure that the straight cylinder cover 21, the lower inner cone cover 22 and the lamp holder 24 connected therewith maintain a vertical state.

[0062] The meshing winding unit 30 further comprises a friction block 34 corresponding to the winding wheel 32, a plug groove adapted to the friction block 34 is formed on the outer wall of the meshing shaft tube 31, the meshing friction block 34 penetrates the plug groove and is fixed with an extension seat at both ends penetrating into the shaft tube 31, and the meshing extension seat is fixed with a first spring 35 with one end fixed to the inner wall of the shaft tube 31.

[0063] In particular, in the initial state, the plane where the outer wall of the friction block 34 is located is lower than the plane where the outer wall of the shaft tube 31 is located, that is, the friction block 34 is completely in the plug groove and does not contact the inner wall of the winding wheel 32, at the same time, the center of the outer wall of the friction block 34 and the center of the inner wall of the winding wheel 32 are on the same axis, and when the friction block 34 moves upward to contact the inner wall of the winding wheel 32, it can completely fit the inner wall of the winding wheel 32 to ensure that enough friction force can be generated between them.

[0064] As shown in Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figures 11-17 , the meshing winding unit 30 further comprises a hierarchical pushing unit 40 slidingly installed in the shaft tube 31.

[0065] The meshing stepped pushing unit 40 comprises a shaft rod 41, axial sliding blocks are fixed at both ends of the meshing shaft rod 41, axial sliding grooves which are matched with the axial sliding blocks are formed in the outer walls of both ends of the meshing shaft tube 31, and a guide ring 42 matched with the shaft tube 31 is fixed at one end of the two meshing axial sliding blocks penetrating the axial sliding grooves; the meshing shaft rod 41 is slid in the shaft tube 31 through cooperation of the axial sliding blocks and the guide ring 42;

[0066] A second bearing seat 43 is mounted on the outer surface of the meshing guide ring 42, sliding channels 44 are fixed on the two side walls of the meshing mounting frame 10, the two ends of the meshing second bearing seat 43 are respectively connected in the two sliding channels 44 in a sliding mode, a support rod 312 is fixed on the inner wall of the meshing shaft tube 31 through bolts, and one end of the meshing shaft rod 41 penetrating the shaft tube 31 is slidably sleeved on the support rod 312;

[0067] A group of left abutting blocks 45, three groups of continuously arranged middle abutting blocks 46 and three groups of intermittently arranged right abutting blocks 47 are sequentially assembled on the outer wall of the meshing shaft rod 41 from left to right, and the meshing left abutting blocks 45, middle abutting blocks 46 and right abutting blocks 47 can be moved to the upper wall of the friction block 34 after being moved to the lower side of the friction block 34, so as to be moved upward to abut against the inner wall of the winding wheel 32;

[0068] Specifically, the spacing between two winding wheels 32 can accommodate four groups of abutting blocks, assuming that the four groups are A, B, C and D from left to right, the left abutting blocks 45 are provided with only one group corresponding to group A, the middle abutting blocks 46 are provided with three groups corresponding to groups A, B and C, the right abutting blocks 47 are provided with three groups and are distributed at intervals corresponding to groups A, B and D, and three winding wheels 32 are arranged on the left and right sides above the lifting LED lamp 20, that is, the shaft rod 41 is also provided with two left and right shaft rods, and the structures on the left and right sides are mirror images, and it is worth noting that the moving directions of the left and right shaft rods 41 are opposite;

[0069] In actual use, S1: if the lamp holder 24 needs to be adjusted alone, move the left shaft rod 41 to the right by a group of distances, at which time the left abutting block 45, the middle abutting block 46 and the right abutting block 47 move a group of distances together, at which time only the right abutting block 47 in the D group abuts against the friction block 34 corresponding to the right winding wheel 32, so that the friction block 34 abuts against the right winding wheel 32, in this state, when the shaft pipe 31 rotates clockwise or counterclockwise, only the right winding wheel 32 can rotate together, correspondingly, the moving direction of the right shaft rod 41 is opposite but the distance is the same, and after moving, the two mirror image winding wheels 32 can rotate together, thereby winding or unwinding the pull rope 33 on the surface, thereby making the lamp holder 24 rise or fall alone, so that the illumination range of the LED lamp body 25 can be adjusted (a fan-shaped light of different range sizes can be illuminated, and when the bottom of the LED lamp body 25 on the lamp holder 24 is flush with the outlet end of the straight cylinder cover 21, a light of the largest range will be illuminated at this time);

[0070] S2: when the lower inner cone cover 22 needs to be adjusted alone, move the left shaft rod 41 to the right by a group of distances on the basis of the moving distance in S1, at which time the left abutting block 45, the middle abutting block 46 and the right abutting block 47 move two groups of distances respectively, at which time only the middle abutting block 46 in the C group abuts against the friction block 34 corresponding to the middle winding wheel 32, so that the friction block 34 abuts against the middle winding wheel 32, in this state, when the shaft pipe 31 rotates counterclockwise, only the middle winding wheel 32 can rotate together, correspondingly, the moving direction of the right shaft rod 41 is opposite but the distance is the same, and after moving, the two mirror image winding wheels 32 can rotate counterclockwise together, thereby winding the pull rope 33 on the surface, thereby making the lower inner cone cover 22 rise alone, so that the illumination shape of the LED lamp body 25 can be adjusted (from fan-shaped light to columnar light, the lower inner cone cover 22 gradually rises and is gradually collected with the middle inner cone cover 23 and the lamp holder 24, when the three are collected together, in this state, the light emitted by the LED lamp body 25 will be columnar due to the effect of the straight cylinder cover 21);

[0071] S3: When it is needed to adjust the lower inner cone cover 22 and the lamp holder 24 at the same time, the left shaft rod 41 is moved to the right by a distance on the basis of the moving distance in S2, at this time, the left abutting block 45, the middle abutting block 46 and the right abutting block 47 are moved by three groups of distances respectively, at this time, only the B group of right abutting blocks 47 and the B group of middle abutting blocks 46 abut against the friction blocks 34 corresponding to the right winding wheel 32 and the middle winding wheel 32 respectively, so that the two groups of friction blocks 34 abut against the right winding wheel 32 and the middle winding wheel 32 respectively, in this state, when the shaft pipe 31 rotates clockwise or counterclockwise, the right winding wheel 32 and the winding wheel 32 at the middle position can rotate together, correspondingly, the moving direction of the right shaft rod 41 is opposite but the distance is the same, and after moving, the four winding wheels 32 in mirror image can rotate clockwise or counterclockwise together, thereby the pull rope 33 on the surface is unwound or wound, thereby the lower inner cone cover 22 and the lamp holder 24 can rise or fall together;

[0072] S4: When it is needed to maintain the lamp, at this time, the lifting LED lamp 20 needs to be lowered as a whole or reset, at this time, the left shaft rod 41 is moved to the right by a distance on the basis of the moving distance in S3, at this time, the left abutting block 45, the middle abutting block 46 and the right abutting block 47 are moved by four groups of distances respectively, at this time, the A group of left abutting blocks 45, the A group of middle abutting blocks 46 and the A group of right abutting blocks 47 abut against the friction blocks 34 corresponding to the left winding wheel 32, the middle winding wheel 32 and the right winding wheel 32 respectively, so that the three groups of friction blocks 34 abut against the right winding wheel 32, the middle winding wheel 32 and the left winding wheel 32 respectively, in this state, when the shaft pipe 31 rotates clockwise or counterclockwise, the right winding wheel 32 and the winding wheel 32 at the middle position can rotate together, correspondingly, the moving direction of the right shaft rod 41 is opposite but the distance is the same, and after moving, the six winding wheels 32 in mirror image can rotate clockwise or counterclockwise together, thereby the pull rope 33 on the surface is unwound or wound, thereby the lifting LED lamp 20 can be lowered as a whole or reset upward, which is convenient for maintenance;

[0073] S5: Specifically, when the shaft rod 41 is moved to the required position, so that the abutting block at the required position drives the friction block 34 at the corresponding position to abut against the inner wall of the winding wheel 32, the second motor 310 is started to rotate the second gear 311, thereby the shaft pipe 31 can rotate together with the shaft rod 41 and the winding wheel 32 which is abutted, so that different parts or the whole of the lifting LED lamp 20 can be lifted.

[0074] Further in detail, as shown in Figure 2 and Figure 4 one side of the first bearing seat 11 engaged with one another is equipped with the second motor 310, the output end of the second motor 310 and the shaft pipe 31 are fixed with the second gear 311 at one end of the first bearing seat 11, and the two second gears 311 engaged with each other.

[0075] The left side linkage rods 48 are fixed on both sides of the side surface of the left side engaging second bearing seat 43, and the right side linkage rods 49 are fixed on both sides of the middle part of the side surface of the right side engaging second bearing seat 43. One end of the left side linkage rod 48 penetrates through the first bearing seat 11, the retainer 37, and the right side second bearing seat 43 and extends to the outside of the right side second bearing seat 43. One end of the right side linkage rod 49 penetrates through the first bearing seat 11, the retainer 37, and the left side second bearing seat 43 and extends to the outside of the left side second bearing seat 43.

[0076] The cross frame 12 is installed on the side of the engaging installation frame 10 close to the left side first bearing seat 11. Two first gears 410 are rotatably connected to the cross frame 12 through bearings. The inner sides of the left side linkage rod 48 and the right side linkage rod 49 are provided with racks engaged with the first gears 410. The lower surface of the cross frame 12 is provided with a first motor 411 with an output end connected to one of the first gears 410.

[0077] Specifically, during the actual adjustment of the position of the shaft rod 41, the first motor 411 is started to drive the first gear 410 connected thereto to rotate, and the rack is matched to enable the left side linkage rod 48 and the right side linkage rod 49 to move in a mirror image, so that the left and right second bearing seats 43 gradually approach or move away from each other, and then the left and right shaft rods 41 can move relatively, so that the left abutting block 45, the middle abutting block 46, and the right abutting block 47 on the shaft rod 41 are displaced to the desired position, and then the friction blocks 34 at different positions are simultaneously or respectively abutted against the inner wall of the corresponding position of the winding wheel 32.

[0078] Further, as shown in Figure 10 and Figure 17 , a lower guide sliding groove is formed in the inner wall of the annular cavity of the lower inner conical cover 22. A lower guide magnet 27 is fixed to the outer wall of the middle inner conical cover 23 and is matched with the lower guide sliding groove. An iron sheet is embedded in the top of the inner wall of the lower guide sliding groove. A middle guide sliding groove is formed in the inner wall of the annular cavity of the middle inner conical cover 23. A middle guide sliding block is fixed to the outer wall of the lamp holder 24 and is matched with the middle guide sliding groove. The lamp holder 24 is slidably connected to the middle inner conical cover 23 through the middle guide sliding block. The middle inner conical cover 23 is slidably connected to the lower inner conical cover 22 through the lower guide magnet 27.

[0079] Notably, when the lamp holder 24 moves downward alone, when the lamp holder 24 moves to the middle inner cone cover 23 and cannot continue to move, at this time, under the superposition of the gravity of the lamp holder 24 and the middle inner cone cover 23, it will be greater than the adsorption force between the iron sheets of the lower guide magnet 27, so that the middle inner cone cover 23 will move downward with the lamp holder 24 to be overlapped together in the lower inner cone cover 22, and when the lamp holder 24 is reset upward, the lamp holder 24 moves upward first, when the middle guide slider moves to the top of the middle guide sliding groove, the lamp holder 24 pulls the middle inner cone cover 23 together upward during the movement, and when the lower guide magnet 27 is re-magnetically attracted together with the iron sheet, the reset is completed.

[0080] In particular, when multiple lifting LED lamps 20 need to be installed, the shaft rods 41 equipped are connected together through the shaft couplings, and the corresponding left linkage rods 48 and right linkage rods 49 are also connected respectively, for example, the free end of the left linkage rod 48 in the middle position needs to be connected and fixed with the second bearing seat 43 connected with the fixed end of the left linkage rod 48 in the left position, and the rest of the rod bodies are connected in the same way. In this state, only one first motor 411 and one second motor 310 need to be equipped in the middle position.

[0081] Further in detail, as shown in Figure 4 and Figure 6 , in order to ensure that the winding wheel 32 will not rotate by gravity after stopping rotating, the two ends of the winding wheel 32 are fixed with extension pieces 36, the outer surfaces of the extension pieces 36 are sleeved with retaining frames 37 fixed with the two side walls of the mounting frame 10, mounting holes are formed in the inner walls of the retaining frames 37, hemispherical clamping columns 39 are connected in the mounting holes through second springs 38, and a plurality of limiting holes compatible with the hemispherical clamping columns 39 and arranged in a circumferential array are formed in the outer walls of the extension pieces 36.

[0082] Specifically, the friction force generated after the friction block 34 abuts against the inner wall of the winding wheel 32 is greater than the abutting force of the second spring 38 on the hemispherical clamping column 39, that is, when the friction block 34 abuts against the inner wall of the winding wheel 32, the shaft tube 31 rotates to drive the winding wheel 32 to rotate, which is not hindered by the hemispherical clamping column 39, and when the rotation is completed, the hemispherical clamping column 39 is re-clamped in the limiting hole in the corresponding position under the driving of the second spring 38, so that the position of the winding wheel 32 is fixed, thereby preventing the winding wheel 32 from rotating by itself due to the weight of the lifting LED lamp 20.

[0083] As shown in Figure 9 , Figure 10 and Figure 17As shown, in order to protect the LED lamp body 25 in non-use state, the meshing lifting LED lamp 20 further comprises a flexible sheet 26 mounted on the top inner wall of the straight cylinder cover 21, the meshing flexible sheet 26 is distributed in a circumferential array, preferably, the flexible sheet 26 is composed of a dust cloth and elastic rods arranged on both sides of the dust cloth, the flexible sheet 26 can restore to a horizontal state under the action of the elastic rods;

[0084] Specifically, in non-use state, the lower inner cone cover 22 and the lamp holder 24 are simultaneously driven to move upward, in the process, the middle inner cone cover 23 also moves together, when moving beyond the connection between the flexible sheet 26 and the inner wall of the straight cylinder cover 21, the flexible sheet 26 restores to a horizontal state from a vertical state under the action of its own flexibility, and then the straight cylinder cover 21 is closed under the action of the plurality of flexible sheets 26 to protect the LED lamp body 25, avoiding dust attachment during non-use process, and ensuring normal lighting use;

[0085] It is worth noting that even if the flexible sheet 26 is pushed to be folded upward, when the folded flexible sheet 26 is no longer resisted, the flexible sheet 26 returns to a horizontal state, when restoring use, the lower inner cone cover 22 and the lamp holder 24 are simultaneously controlled to descend, after the lower inner cone cover 22 contacts the flexible sheet 26 in a horizontal state, in the process of continuous downward movement, the flexible sheet 26 gradually folds to be vertical under the action of the gravity of the lower inner cone cover 22 itself, and is attached to the gap between the outer wall of the lower inner cone cover 22 and the inner wall of the straight cylinder cover 21, when continuously moving to be separated from the straight cylinder cover 21 and gradually moving away, moving to different positions can provide different lighting conditions.

[0086] Specifically, the lifting LED lamp in working / use state:

[0087] 1. Adjusting the lamp holder 24 (adjusting the illumination range) alone

[0088] Starting the first motor 411, driving the left shaft rod 41 to move rightward by a distance, so that the friction block 34 of the right winding wheel 32 abuts against the inner wall of the winding wheel 32;

[0089] Starting the second motor 310, driving the right winding wheel 32 to rotate through the shaft pipe 31, winding or unwinding the pull rope 33 connected with the lamp holder 24, to realize the independent lifting of the lamp holder 24;

[0090] When the lamp holder 24 descends to the bottom and is flush with the outlet end of the straight cylinder cover 21, the illumination range of the LED lamp body 25 is the largest.

[0091] 2. Adjusting the lower inner cone cover 22 (adjusting the illumination shape) alone

[0092] On the basis of step 1, continuously driving the left shaft rod 41 to move rightward by a distance, so that the friction block 34 of the middle winding wheel 32 abuts against the inner wall of the winding wheel 32;

[0093] Start the second motor 310, through the shaft tube 31 drive the intermediate winding wheel 32 rotation, to the lower inner cone cover 22 connected to the pull rope 33 winding, make it alone rise;

[0094] Lower inner cone cover 22 in the process of rising with the middle inner cone cover 23, lamp holder 24 superposition, LED lamp body 25 irradiation shape from fan-shaped light gradually adjusted for columnar light.

[0095] 3、Adjust the lower inner cone cover 22 and lamp holder 24

[0096] On the basis of step 2, continue to drive the left shaft rod 41 to move right a group of distance, make the right side and the intermediate winding wheel 32 friction block 34 top simultaneously;

[0097] Start the second motor 310, through the shaft tube 31 drive the right side and the intermediate winding wheel 32 synchronous rotation, to the lower inner cone cover 22 and lamp holder 24 pull rope 33 linkage winding, realize synchronous lifting of both;

[0098] 4、Overall lifting lamp (repair or reset)

[0099] On the basis of step 3, continue to drive the left shaft rod 41 to move right a group of distance, make the left side, intermediate and right winding wheel 32 friction block 34 all top;

[0100] Start the second motor 310, through the shaft tube 31 drive all winding wheel 32 synchronous rotation, to the three groups of pull rope 33 linkage winding, realize the overall descent of the lamp or upward reset.

[0101] 5、Dustproof operation

[0102] Non-use state, drive the lower inner cone cover 22 and lamp holder 24 to rise to the straight cylinder cover 21 simultaneously, the toughness piece 26 through the elastic recovery automatic sealing straight cylinder cover 21 export;

[0103] When the use is restored, drive the lower inner cone cover 22 and lamp holder 24 to descend simultaneously, the toughness piece 26 gradually under the gravity of the lower inner cone cover 22 down fold for vertical, restore the lighting function.

[0104] The above, only for the preferred specific embodiments of the present application, but the protection scope of the present application is not limited to this, any skilled in the art of the technical personnel in the technical range disclosed by the present application, according to the technical scheme of the present application and the invention concept of equivalent replacement or change, should be covered in the protection scope of the present application.

Claims

1. A retractable LED light fixture, comprising a mounting bracket (10) installed in a suspended ceiling, characterized in that, A lifting LED light (20) is inserted into the bottom of the ceiling, and a winding unit (30) is rotatably connected inside the mounting frame (10) through the first bearing seat (11). The winding unit (30) includes a shaft tube (31) installed in a bearing seat, and a winding wheel (32) is fitted on the shaft tube (31). The lifting LED light (20) is extended and retracted up and down by a pull rope (33) wound on the winding wheel (32). The lifting LED light (20) includes a straight cylindrical cover (21) inserted into the ceiling, a lower inner cone cover (22) inserted into the straight cylindrical cover (21), a middle inner cone cover (23) slidably connected inside the lower inner cone cover (22), a lamp holder (24) slidably connected inside the middle inner cone cover (23), and an LED light body (25) threadedly connected inside the lamp holder (24). The pull rope (33) is divided into three groups, and the three groups of pull ropes (33) are respectively connected to the straight cylindrical cover (21), the lower inner cone cover (22), and the lamp holder (24). The winding unit (30) also includes a friction block (34) corresponding to the winding wheel (32). The outer wall of the shaft tube (31) is provided with a slot that is compatible with the friction block (34). Both ends of the friction block (34) that pass through the slot and enter the shaft tube (31) are fixed with extension seats. A first spring (35) with one end fixed to the inner wall of the shaft tube (31) is fixed on the extension seat. The winding unit (30) also includes a graded pushing unit (40) that is slidably installed in the shaft tube (31). The graded pushing unit (40) includes a shaft (41), both ends of which are fixed with axial sliders. Both ends of the shaft tube (31) are provided with axial grooves that are adapted to the axial sliders. The two axial sliders are fixed with a guide ring (42) adapted to the shaft tube (31) at one end through the axial groove. The shaft (41) slides in the shaft tube (31) through the cooperation of the axial sliders and the guide ring (42). A second motor (310) is mounted on one side of one of the first bearing housings (11). A second gear (311) is fixed to the output end of the second motor (310) and the end of the shaft tube (31) that passes through the first bearing housing (11). The two second gears (311) mesh with each other. The outer surface of the guide ring (42) is fitted with a second bearing seat (43). Slide rails (44) are fixed on both sides of the mounting bracket (10). The two ends of the second bearing seat (43) are slidably connected to the two slide rails (44). A support rod (312) is fixed to the middle of the inner wall of the shaft tube (31) by bolts. One end of the shaft rod (41) that passes through the shaft tube (31) is slidably sleeved on the support rod (312).

2. The lifting LED lamp according to claim 1, characterized in that, The outer wall of the shaft (41) is equipped with a set of left abutting blocks (45), three sets of continuously arranged middle abutting blocks (46), and three sets of intermittently arranged right abutting blocks (47) in sequence from left to right. After the left abutting blocks (45), middle abutting blocks (46) and right abutting blocks (47) move to below the friction block (34), they can move upward to abut against the inner wall of the roller (32).

3. A lifting LED lighting fixture according to claim 1, characterized in that, Both ends of the reel (32) are fixed with extensions (36). The outer surface of the extension (36) is fitted with a retainer (37) whose two ends are respectively fixed to the two side walls of the mounting frame (10). The inner wall of the retainer (37) is provided with a mounting hole. A hemispherical locking post (39) is connected to the mounting hole through a second spring (38). The outer wall of the extension (36) is provided with a plurality of limiting holes that are adapted to the hemispherical locking post (39) and are distributed in a circumferential array.

4. A lifting LED lamp according to claim 2, characterized in that, Left linkage rods (48) are fixed on both sides of one side of the second bearing housing (43) on the left side, and right linkage rods (49) are fixed on both sides of the middle part of one side of the second bearing housing (43) on the right side. One end of the left linkage rod (48) passes through the first bearing housing (11), the cage (37) and the second bearing housing (43) on the right side and extends to the outside of the second bearing housing (43) on the right side. One end of the right linkage rod (49) passes through the first bearing housing (11), the cage (37) and the second bearing housing (43) on the left side and extends to the outside of the second bearing housing (43) on the left side.

5. A lifting LED lighting fixture according to claim 4, characterized in that, The mounting bracket (10) has a crossbeam (12) mounted on the side of the first bearing seat (11) on the left side. Two first gears (410) are rotatably connected to the crossbeam (12) via bearings. The inner sides of the left linkage rod (48) and the right linkage rod (49) are provided with racks that mesh with the first gears (410). The lower surface of the crossbeam (12) is equipped with a first motor (411) whose output end is connected to one of the first gears (410).

6. A lifting LED lamp according to claim 1, characterized in that, The lifting LED light (20) also includes a flexible sheet (26) installed on the top of the inner wall of the straight cover (21), and the flexible sheet (26) is distributed in a circumferential array.

7. A lifting LED lamp according to claim 6, characterized in that, The lower inner cone cover (22) has a lower guide groove on the inner wall of the annular cavity. The middle inner cone cover (23) has a lower guide magnet (27) that matches the lower guide groove on the outer wall. The top of the inner wall of the lower guide groove is embedded with an iron sheet. The middle inner cone cover (23) has a middle guide groove on the inner wall of the annular cavity. The lamp holder (24) has a middle guide slider that matches the middle guide groove on the outer wall. The lamp holder (24) is slidably connected to the middle inner cone cover (23) through the middle guide slider. The middle inner cone cover (23) is slidably connected to the lower inner cone cover (22) through the lower guide magnet (27).

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