Screw-off-prevention structure and lamp

Abstract

The present invention provides a structure to prevent screws from falling off and a lamp. The structure to prevent screws from falling off of the present invention comprises a threaded fastener, a first mounting member and a second mounting member, the threaded fastener comprises a nut portion, a bare rod portion and a threaded portion connected in sequence, the threaded portion has a first thread; the first mounting member is provided with a first connecting hole, the wall surface of the first connecting hole is provided with a second thread, and the aperture of the first connecting hole is smaller than the diameter of the nut portion; the second mounting member is provided with a second connecting hole, the wall surface of the second connecting hole is provided with a third thread. The lamp of the present invention comprises the above-mentioned structure to prevent screws from falling off. The structure to prevent screws from falling off of the present invention can prevent screws from falling off, improve the convenience and efficiency of maintenance; the lamp provided by the present invention is easy to maintain.

Description

Technical Field

[0001] The present invention relates to the technical field of lighting fixtures, and in particular to a screw-fall-off prevention structure and a lighting fixture. Background Art

[0002] During the routine maintenance of lamps, maintenance personnel often need to disassemble the housing or box of the lamp. The housing of the lamp is usually fixed with screws. During the maintenance process, the loosened screws are easy to fall from the housing and other parts to the ground and be lost, which brings great inconvenience to maintenance personnel and affects maintenance efficiency. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a screw-off prevention structure, which can effectively prevent the screws from falling off from the parts and components, thereby improving the convenience of the maintenance process.

[0004] The present invention also provides a lamp having the above-mentioned screw-falling-off preventing structure.

[0005] According to the first aspect of the present invention, the anti-screw falling-off structure of the embodiment includes: a threaded fastener, the threaded fastener includes a nut part, a smooth rod part and a threaded part connected in sequence, the smooth rod part is smooth, and the threaded part has a first thread; a first mounting member, the first mounting member is provided with a first connecting hole, the wall surface of the first connecting hole is provided with a second thread, and the aperture of the first connecting hole is smaller than the diameter of the nut part; a second mounting member, the second mounting member is provided with a second connecting hole, and the wall surface of the second connecting hole is provided with a third thread; wherein the first thread can be respectively screwed with the second thread and the third thread, the smooth rod part can be inserted into the first connecting hole, and the threaded part passing through the first connecting hole can enter the second connecting hole and be connected to the second mounting member.

[0006] The anti-screw falling structure according to the embodiment of the present invention has at least the following beneficial effects: when it is necessary to separate the first mounting member and the second mounting member, the threaded fastener can be rotated in a specific direction until the threaded portion of the threaded fastener is disengaged from the second connecting hole, and then the first mounting member and the second mounting member can be separated. The diameter of the nut portion is larger than the diameter of the first connecting hole, and the first thread of the threaded portion and the second thread in the first connecting hole can be screwed together. Therefore, without rotating the threaded fastener, the threaded fastener cannot be disengaged from the first mounting member. During the maintenance process, the threaded fastener stays in the first mounting member and is not easy to fall off or lose, which reduces the trouble of finding lost screws for maintenance personnel and improves the convenience and efficiency of the maintenance process.

[0007] According to some embodiments of the present invention, the second mounting member further includes a transition groove, one end of the transition groove has an opening, the opening is arranged on the end surface of the second mounting member, the other end of the transition groove is connected to the second connecting hole, and the side wall of the transition groove is smooth.

[0008] According to some embodiments of the present invention, along the direction in which the threaded fastener enters the second connecting hole, the side wall of the transition groove gradually approaches the axis of the second connecting hole.

[0009] According to some embodiments of the present invention, the side wall of the transition groove is a conical surface.

[0010] The lamp according to the second aspect of the embodiment of the present invention includes the screw-falling-off preventing structure as described above.

[0011] The lamp according to the embodiment of the present invention has at least the following beneficial effects: the screws of the lamp are not easy to fall off, and maintenance is convenient.

[0012] According to some embodiments of the present invention, the lamp further includes a power box, which includes the first mounting member and the second mounting member, the second mounting member having an electrical control mounting cavity, and the first mounting member can cover the open side of the electrical control mounting cavity to close the electrical control mounting cavity.

[0013] According to some embodiments of the present invention, the lamp also includes an angle adjustment mechanism, which includes a base, a rotating frame, a pressing piece and an adjusting piece, the base is connected to the power box, the rotating frame is rotatably connected to the base, at least a portion of the base is located between the rotating frame and the pressing piece, the adjusting piece is connected to the rotating frame, and the adjusting piece is connected to the pressing piece, and the adjusting piece is capable of changing the distance between the pressing piece and the rotating frame so that the pressing piece and the rotating frame can jointly clamp the base.

[0014] According to some embodiments of the present invention, the adjusting member includes a first connecting portion and a supporting portion, the pressing member includes a second connecting portion, the rotating frame is provided with a first mounting hole, and the first connecting portion and the supporting portion are connected; the first connecting portion can pass through the first mounting hole, the supporting portion can be supported by the side wall of the rotating frame, and the supporting portion and the pressing member are located on different sides of the rotating frame, and the first connecting portion and the second connecting portion are threadedly connected; the adjusting member can rotate relative to the pressing member to change the distance between the pressing member and the rotating frame.

[0015] According to some embodiments of the present invention, the clamping member further includes a main body portion and a holding portion, the main body portion is connected to the second connecting portion, the holding portion is connected to the main body portion, the holding portion protrudes relative to the main body portion in a direction close to the rotating frame, and the holding portion can clamp the base together with the rotating frame.

[0016] According to some embodiments of the present invention, the clamping member also includes an insertion portion, the end of the main body away from the base is bent toward the direction close to the rotating frame, the insertion portion is connected to the end of the main body away from the base, the rotating frame includes a second mounting hole, and the insertion portion can be inserted into the second mounting hole.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 Schematic diagram of the connection relationship of the screw-proof structure in the embodiment of the present invention;

[0020] Figure 2 for Figure 1 Schematic diagram of the exploded view of the anti-screw falling structure;

[0021] Figure 3 is an overall schematic diagram of a lamp in an embodiment of the present invention;

[0022] Figure 4 for Figure 3 An exploded schematic diagram of the lamp shown;

[0023] Figure 5 is a cross-sectional view of the lamp body module;

[0024] Figure 6 This is a schematic diagram of the power box;

[0025] Figure 7 It is a schematic diagram of the connection relationship between the sealing compression member and the power supply sealing member;

[0026] Figure 8 is an overall schematic diagram of the angle adjustment mechanism;

[0027] Fig. 9 for Figure 8 A top view of the angle adjustment mechanism shown;

[0028] Fig.10 for Figure 8 An exploded schematic diagram of the angle adjustment mechanism shown;

[0029] Fig.11 for Fig.10 A schematic diagram of the pressing member shown from another angle.

[0030] Figure markings: 101-threaded fastener, 102-first mounting member, 103-second mounting member, 201-nut portion, 202-light rod portion, 203-threaded portion, 204-first connecting hole, 205-second connecting hole, 206-transition groove, 301-power box, 302-base plate, 303-rotating frame, 304-lamp body mounting frame, 305-lamp body module, 401-power seal, 402-power supply, 403-heat sink, 404-lamp board, 405-light source waterproof member, 406-lens, 407-pressing plate, 501-heat sink rib, 601-electric control Mounting cavity, 602-sealing accommodating groove, 603-fifth mounting hole, 604-rotation limiting protrusion, 701-sealing pressing portion, 801-pressing piece, 802-adjusting piece, 803-base shaft screw, 1001-first connecting portion, 1002-holding portion, 1003-holding portion, 1004-first mounting hole, 1005-second mounting hole, 1006-main body, 1007-insertion portion, 1008-holding portion, 1009-angle scale, 1010-indicator mark, 1011-third mounting hole, 1012-fourth mounting hole, 1013-rotation limiting hole. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In the description of the present invention, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0036] Reference Figure 1 and Figure 2 The screw-dropping prevention structure of the present invention comprises a first mounting member 102, a second mounting member 103 and a threaded fastener 101. The first mounting member 102 and the second mounting member 103 are connected by the threaded fastener 101. Specifically, the first mounting member 102 and the second mounting member 103 can be connected by screwing the threaded fastener 101. The threaded fastener 101 comprises a nut portion 201, a bare rod portion 202 and a threaded portion 203. The bare rod portion 202 is smooth (the "smooth" here means that the side wall of the bare rod portion 202 is not provided with threads), and the outer wall of the threaded portion 203 has a first thread. The threaded portion 203 is located at one end of the threaded fastener 101, and the bare rod portion 202 is connected to the threaded portion 203. The first mounting member 102 is provided with a first connection hole 204, the wall of the first connection hole 204 is provided with a second thread (not specifically shown), the second mounting member 103 is provided with a second connection hole 205, the wall of the second connection hole 205 is provided with a third thread (not specifically shown), and the first thread can be screwed with the second thread and the third thread respectively. Figure 1 and Figure 2 , the first connection hole 204 is a through threaded hole, and the second connection hole 205 can be set as a blind threaded hole. The diameter of the first connection hole 204 is smaller than the diameter of the nut portion 201; if the first connection hole 204 is not a circular hole, the diameter of the inscribed circle of the first connection hole 204 is used as the diameter of the first connection hole 204; if the nut portion 201 is not a circular hole, the diameter of the circumscribed circle of the nut portion 201 is used as the diameter of the nut portion 201. The bare rod portion 202 can be inserted into the first connection hole 204, and the threaded portion 203 passing through the first connection hole 204 can enter the second connection hole 205 and connect with the second mounting member 103.

[0037] When it is necessary to separate the first mounting member 102 from the second mounting member 103, the threaded fastener 101 can be rotated in a specific direction until the threaded portion 203 of the threaded fastener 101 is disengaged from the second connection hole 205, and then the first mounting member 102 and the second mounting member 103 can be separated. After the threaded fastener 101 is separated from the second connection hole 205, it is no longer necessary to rotate the threaded fastener 101, and the threaded fastener 101 will not be disengaged from the first mounting member 102. Specifically, Figure 1 For example, the diameter of the nut portion 201 is larger than the diameter of the first connection hole 204, and the nut portion 201 cannot pass through the first connection hole 204 from top to bottom, that is, the threaded fastener 101 as a whole cannot be separated from the first mounting member 102 from top to bottom; while the first thread of the threaded portion 203 and the second thread in the first connection hole 204 can be screwed together, and the threaded portion 203 cannot pass through the first connection hole 204 from bottom to top without rotating the threaded fastener 101, that is, the threaded fastener 101 as a whole cannot be separated from the first mounting member 102 from bottom to top. Therefore, the threaded fastener 101 cannot be separated from the first mounting member 102 without rotating the threaded fastener 101. During the maintenance process, the threaded fastener 101 stays in the first mounting member 102 and is not easy to fall off or lose, which reduces the trouble of finding lost screws for maintenance personnel and improves the convenience and efficiency of the maintenance process.

[0038] Reference Figure 1 and Figure 2 In some embodiments, the second mounting member 103 is further provided with a transition groove 206, the upper end opening of the transition groove 206 is arranged on the end surface of the second mounting member 103, and the lower end of the transition groove 206 is connected with the second connection hole 205. When the threaded fastener 101 is connected with the second mounting member 103, the threaded portion 203 will first pass through the transition groove 206 and then enter the second connection hole 205. The side wall of the transition groove 206 is smooth (here, it means that the side wall of the transition groove 206 is not provided with threads), which can reduce the number of turns of the threaded fastener 101 required to be rotated when the first mounting member 102 and the second mounting member 103 are connected or separated from each other, thereby improving the disassembly efficiency.

[0039] In some embodiments, along the direction in which the threaded fastener 101 enters the second connection hole 205, the side of the transition groove 206 gradually approaches the axis of the second connection hole 205. In the process of the threaded fastener 101 entering the second connection hole 205, the end of the threaded fastener 101 is usually unable to fully align with the second connection hole 205. When the end of the threaded fastener 101 abuts against the wall of the transition groove 206, the wall of the transition groove 206 can guide the threaded fastener 101 to the second connection hole 205, thereby improving the maintenance efficiency of the maintenance personnel. Specifically, the side wall of the transition groove 206 can be set to a cone surface that is easier to process.

[0040] The present invention also provides a lamp, which includes the above-mentioned screw-falling prevention structure, and the screws of the lamp are not easy to fall off, and maintenance is convenient. Figure 6 The power box 301 is a component that needs to be frequently disassembled and repaired. The screw drop prevention structure can be set on the power box 301 of the lamp. The first mounting member 102 can be used as the upper shell of the power box 301, and the second mounting member 103 can be used as the lower shell of the power box 301. The second mounting member 103 has an electric control installation cavity 601. The power supply 402 and related electric control components can be installed in the electric control installation cavity 601. The first mounting member 102 can cover the open side of the electric control installation cavity 601 to close the electric control installation cavity 601.

[0041] Reference Figure 6 and Figure 7 The power box 301 also includes a power seal 401. The second mounting member 103 is also provided with a sealing groove 602. The sealing groove 602 is used to accommodate the power seal 401. The power seal 401 can also be set to a silicone or rubber material. After the power seal 401 is clamped by the first mounting member 102 and the second mounting member 103, the power seal 401 can prevent water from entering the interior of the power box 301 from the gap between the first mounting member 102 and the second mounting member 103, thereby avoiding short circuit of the power supply or other electronic control components.

[0042] Reference Figure 7 In some embodiments, the first mounting member 102 includes a sealing pressing portion 701, which protrudes toward the direction close to the second mounting member 103 and can be inserted into the sealing accommodating groove 602. The sealing pressing portion 701 can clamp the power seal 401 together with the bottom wall of the sealing accommodating groove 602. In this arrangement, the power seal 401 does not need to protrude outside the sealing accommodating groove 602, and the power seal 401 is not easily deformed or damaged due to frequent contact with other objects, that is, this arrangement is conducive to improving the waterproof stability and service life of the power seal 401.

[0043] Reference Figure 3 and Figure 4 The lamp further includes a rotating frame 303, a lamp body mounting frame 304 and a plurality of lamp body modules 305. The lamp body modules 305 can emit light. The lamp body modules 305 are all connected to the lamp body mounting frame 304, and the lamp body mounting frame 304 is connected to the power supply box 301. In addition, the lamp body modules 305 are electrically connected to the power supply 402 in the power supply box 301 through a cable. The rotating frame 303 is rotatably connected to the power supply box 301.

[0044] Reference Figure 4 and Figure 5, the lamp body module 305 includes a heat sink 403, a lamp board 404, a lens 406, a pressure plate 407 and a light source waterproof part 405. The heat sink 403 includes a plurality of heat dissipation ribs 501 to enhance the heat dissipation capacity of the lamp body module 305. The lamp board 404 is installed in the heat sink 403, and the lamp board 404 includes a plurality of LED lamp beads that can emit light; the lens 406 covers the light emitting side of the lamp board 404, and the lens 406 can change the light emission angle of the lamp board 404. The pressure plate 407 and the light source waterproof part 405 are both ring-shaped, and the edge of the lamp board 404 can be inserted into the light source waterproof part 405. The pressure plate 407 is connected to the heat sink 403 by screws, and the pressure plate 407 and the heat sink 403 jointly clamp the light source waterproof part 405 and the edge of the lamp board 404. The light source waterproof member 405 is made of rubber or silicone and can prevent water from entering the lamp body module 305 from the gap between the pressure plate 407 and the lamp board 404 or the gap between the heat sink 403 and the lamp board 404, thereby preventing the lamp board 404 from short-circuiting.

[0045] Reference Figures 8 to 11 The lamp also includes an angle adjustment mechanism, which includes a base plate 302, a rotating frame 303, a pressing member 801 and an adjusting member 802. The base plate 302 is rotatably connected to the rotating frame 303, and the rotating frame 303 can rotate relative to the base plate 302; the adjusting member 802 is connected to the rotating frame 303, and the adjusting member 802 is connected to the pressing member 801, and the adjusting member 802 can change the distance between the pressing member 801 and the rotating frame 303, so that the pressing member 801 and the rotating frame 303 clamp the base plate 302 together. Two objects that need to adjust the relative angle can be connected to the rotating frame 303 and the base plate 302 respectively.

[0046] After the rotating frame 303 rotates to a certain angle relative to the base plate 302, the adjusting member 802 can be used to make the pressing member 801 move toward the rotating frame 303 until the pressing member 801 and the rotating frame 303 clamp the base plate 302 together, and the clamped base plate 302 is difficult to rotate relative to the rotating frame 303, and the relative angle between the rotating frame 303 and the base plate 302 is fixed. The angle adjustment mechanism provided by the present invention has a simple structure and a convenient adjustment method.

[0047] The following is a detailed introduction to the various components in the angle adjustment mechanism.

[0048] Reference Figure 3 and Figure 4The adjusting member 802 includes a first connecting portion 1001 and a supporting portion 1002, the first connecting portion 1001 is connected to the supporting portion 1002, the pressing member 801 includes a second connecting portion 1101, the first connecting portion 1001 and the second connecting portion 1101 are threadedly matched with each other (the threads of the first connecting portion 1001 and the second connecting portion 1101 are not shown in detail), the supporting portion 1002 can be abutted against the side wall of the rotating frame 303, and the supporting portion 1002 and the pressing member 801 are located on different sides of the rotating frame 303. A first mounting hole 1004 is provided on the rotating frame 303 (the first mounting hole 1004 can be a bare hole, that is, the wall of the first mounting hole 1004 is not provided with threads), the first connecting portion 1001 is rod-shaped, the supporting portion 1002 is nut-shaped, and the first connecting portion 1001 can pass through the first mounting hole 1004 and be connected to the second connecting portion 1101. Refer to Figure 2 and Figure 3 , while the abutting portion 1002 and the rotating frame 303 are in a state of abutting each other, the adjusting member 802 can be rotated in a specific direction, so that the pressing member 801 gradually approaches the rotating frame 303 until the pressing member 801 and the rotating frame 303 clamp the base plate 302, thereby fixing the relative angle between the rotating frame 303 and the base plate 302. Similarly, when it is necessary to adjust the angle again, the adjusting member 802 is rotated in another direction, so that the pressing member 801 gradually moves away from the rotating frame 303. When the pressing member 801 and the rotating frame 303 release the clamping between the pressing member 801, the rotating frame 303 can be rotated relative to the base plate 302 to adjust the angle. The distance between the pressing member 801 and the rotating frame 303 is adjusted by the threaded fit between the adjusting member 802 and the pressing member 801, and the adjustment is relatively smooth, and the base plate 302 can be effectively clamped.

[0049] In some embodiments, the adjusting member 802 further includes a gripping portion 1003, the gripping portion 1003 is connected to the abutting portion 1002, and the gripping portion 1003 extends in a direction away from the axis of the first connecting portion 1001. When the adjusting member 802 needs to be rotated, the user holds or grabs the gripping portion 1003 and directly rotates the adjusting member 802, without using tools such as a screwdriver or a wrench, and the user's adjustment operation is more convenient. In addition, for the rotation of the adjusting member 802, the provision of the gripping portion 1003 can increase the force arm of the force applied by the user, that is, the provision of the gripping portion 1003 is conducive to labor saving.

[0050] Reference Figure 3In some embodiments, the pressing member 801 further includes a main body 1006 and a holding portion 1008, the main body 1006 is connected to the second connecting portion 1101 (the second connecting portion 1101 can be configured as a nut welded on the main body 1006), the holding portion 1008 is connected to the main body 1006, and the holding portion 1008 protrudes relative to the main body 1006 toward the direction close to the rotating frame 303, and the holding portion 1008 can clamp the base plate 302 together with the rotating frame 303. Figure 3 The pressing portion 1008 can be specifically configured as a small columnar protrusion. The configuration of the pressing portion 1008 can increase the friction between the pressing member 801 and the base plate 302, thereby improving the pressing stability of the pressing member 801 on the base plate 302.

[0051] In some embodiments, the pressing member 801 further includes an inserting portion 1007, which is connected to one end of the main body 1006, and the end of the main body 1006 connected to the inserting portion 1007 is bent toward the direction close to the rotating frame 303; the rotating frame 303 is also provided with a second mounting hole 1005, and the inserting portion 1007 can be inserted into the second mounting hole 1005. Along the length direction of the pressing member 801, the second connecting portion 1101 can be located between the holding portion 1008 and the inserting portion 1007. Figure 2 and Figure 3 For example, the left end of the main body 1006 is connected to the insertion part 1007. In the process of clamping the base plate 302, the pressing member 801 gradually approaches the rotating frame 303. Compared with the right end of the main body 1006, the left end of the main body 1006 will first abut against the rotating frame 303, and at the same time, the insertion part 1007 will be inserted into the second mounting hole 1005. After the pressing member 801 presses the base plate 302, the middle part of the pressing member 801 is subjected to a forward pulling force, and the two ends of the pressing member 801 are subjected to a backward abutting force, and the pressing member 801 is in a balanced state. If the end of the main body 1006 connected to the insertion part 1007 is bent toward the direction close to the rotating frame 303, when the right end of the pressing member 801 presses the base plate 302, the left end of the pressing member 801 is in a suspended state (not against the rotating frame 303), and due to the uneven force and the action of the torque, the pressing member 801 may tilt or deflect, thereby causing the pressing member 801 to loosen the pressing of the base plate 302 and fail to effectively fix the angle. The plug-in cooperation between the second mounting hole 1005 and the insertion part 1007 is mainly used to position the end of the pressing member 801 away from the base plate 302.

[0052] In some embodiments, the base 302 is provided with an angle scale 1009, and an indicator mark 1010 is provided at one end of the rotating frame 303 connected to the base 302. The indicator mark 1010 can be specifically set to a pattern such as an arrow or a triangle. The user can know the relative angle between the rotating frame 303 and the base 302 according to the scale line pointed by the indicator mark 1010. The setting of the angle scale 1009 and the indicator mark 1010 is conducive to achieving precise adjustment of the relative angle between the rotating frame 303 and the base 302.

[0053] The base plate 302 in the angle adjustment mechanism is installed on the power box 301, and the rotating frame 303 can be installed on the indoor wall, ceiling or some external mounting bracket. Figure 3 and Figure 8 The angle adjustment mechanism also includes a base shaft screw 803, a third mounting hole 1011 is provided on the rotating frame 303, a fourth mounting hole 1012 is provided on the base plate 302, and a fifth mounting hole 603 is provided on the power box 301, wherein the third mounting hole 1011 and the fourth mounting hole 1012 are light holes, and the fifth mounting hole 603 is a threaded hole, the base shaft screw 803 passes through the third mounting hole 1011 and the fourth mounting hole 1012 in sequence and enters the fifth mounting hole 603, the base shaft screw 803 is threadedly connected to the power box 301, and the rotating frame 303 can rotate around the base shaft screw 803. A rotation limit hole 1013 is also provided on the base plate 302, and the power box 301 also includes a rotation limit protrusion 604, which can be inserted into the rotation limit hole 1013. The rotation limit protrusion 604 can prevent the base plate 302 from rotating relative to the power box 301, that is, the base plate 302 and the power box 301 are relatively fixed.

[0054] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present invention. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. A lamp, characterized in that The invention comprises a screw-preventing structure, wherein the screw-preventing structure comprises: A threaded fastener, the threaded fastener comprising a nut portion, a polished rod portion and a threaded portion connected in sequence, the polished rod portion is smooth, and the threaded portion has a first thread; A first mounting member, wherein the first mounting member is provided with a first connecting hole, a wall surface of the first connecting hole is provided with a second thread, and a diameter of the first connecting hole is smaller than a diameter of the nut portion; A second mounting member, wherein the second mounting member is provided with a second connecting hole, and a wall surface of the second connecting hole is provided with a third thread; The first thread can be screwed with the second thread and the third thread respectively, the bare rod can be inserted into the first connecting hole, and the threaded portion passing through the first connecting hole can enter the second connecting hole and be connected to the second mounting member; The lamp also includes a power supply box, which includes the first mounting member and the second mounting member, the second mounting member having an electric control mounting cavity, the first mounting member being able to cover the open side of the electric control mounting cavity to close the electric control mounting cavity, the first mounting member serving as an upper shell of the power supply box, the second mounting member serving as a lower shell of the power supply box, the power supply box also including a power supply seal, the second mounting member also providing a seal accommodating groove, the seal accommodating groove being used to accommodate the power supply seal; The lamp further comprises an angle adjustment mechanism, which comprises a base plate, a rotating frame, a pressing member and an adjusting member, wherein the base plate is connected to the power supply box, the rotating frame is rotatably connected to the base plate, at least a portion of the base plate is located between the rotating frame and the pressing member, the adjusting member is connected to the rotating frame, and the adjusting member is connected to the pressing member, and the adjusting member can change the distance between the pressing member and the rotating frame so that the pressing member and the rotating frame jointly clamp the base plate; The adjusting member includes a first connecting portion and a holding portion, the pressing member includes a second connecting portion, the rotating frame is provided with a first mounting hole, the first connecting portion and the holding portion are connected; the first connecting portion can pass through the first mounting hole, the holding portion can hold against the side wall of the rotating frame, and the holding portion and the pressing member are located on different sides of the rotating frame, and the first connecting portion and the second connecting portion are threadedly connected; the adjusting member can rotate relative to the holding member to change the distance between the holding member and the rotating frame; The pressing member further comprises a main body and a holding portion, wherein the main body is connected to the second connecting portion, the holding portion is connected to the main body, the holding portion protrudes relative to the main body in a direction close to the rotating frame, and the holding portion can clamp the base plate together with the rotating frame; The clamping member also includes an insertion portion, and the end of the main body away from the base is bent toward the direction close to the rotating frame. The insertion portion is connected to the end of the main body away from the base. The rotating frame includes a second mounting hole, and the insertion portion can be inserted into the second mounting hole.

2. The lamp according to claim 1, characterized in that: The second mounting member further comprises a transition groove, one end of which has an opening, the opening being arranged on the end surface of the second mounting member, the other end of the transition groove being in communication with the second connecting hole, and the side wall of the transition groove being smooth.

3. The lamp according to claim 2, characterized in that: Along the direction in which the threaded fastener enters the second connecting hole, the side wall of the transition groove gradually approaches the axis of the second connecting hole.

4. The lamp according to claim 3, characterized in that: The side wall of the transition groove is a conical surface.

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