Panel lamp

Abstract

The utility model belongs to the technical field of lighting equipment, and particularly relates to a panel lamp which comprises a diffusion plate, a light source assembly and a back plate assembly which are sequentially arranged in a stacked mode. The enclosure frame structure comprises a side frame, a first traction piece, a second traction piece and a plurality of mounting pieces, the side frame is formed by shaping and bending a slender single profile, the side frame is provided with a first end and a second end which are adjacent but not connected when the side frame is in a loose state, the first traction piece is fixedly connected with the first end through the mounting pieces, and the second traction piece is fixedly connected with the second end through the mounting pieces. The second traction piece is fixedly connected with the second end through other mounting pieces, the first traction piece is provided with a first traction part, the second traction piece is provided with a second traction part, the first traction part and the second traction part are detachably connected so as to be in butt joint and spliced, and the edge areas of the diffusion plate and the back plate assembly are both mounted on the side frame. According to the technical scheme, the problem that in the prior art, a seam exists between the two ends of the side frame of the panel lamp, and consequently a light leakage position appears at the seam is solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of lighting devices, and particularly relates to a panel lamp. BACKGROUND

[0002] In the related art, a shell-free assembled panel lamp is assembled by a side frame to assemble components such as a diffusion plate, a light source assembly and a back plate assembly together, so as to form a panel lamp product. Before the assembling operation, the two end heads of the side frame are opened, and during the assembling operation, the two end heads are connected to each other by a connecting piece to form a surrounding space, so that the side frame assembles the components such as the diffusion plate, the light source assembly and the back plate assembly together. Since each component of the panel lamp has a tolerance during manufacturing, the two end heads of the side frame always have a joint when the two end heads are connected to each other to form the surrounding space, that is, the two end heads of the side frame cannot be butted against each other. Since the two end heads of the side frame have a joint, the panel lamp has a light leakage position at the joint of the side frame. CONTENT OF THE UTILITY MODEL

[0003] The application aims to provide a panel lamp, and aims to solve the problem that the two end heads of the side frame of the panel lamp have a joint in the related art, resulting in a light leakage position at the joint.

[0004] To achieve the above-mentioned purpose, the application adopts the technical scheme of a panel lamp, which comprises a diffusion plate, a light source assembly and a back plate assembly, and the three are sequentially stacked; the panel lamp further comprises:

[0005] a surrounding frame structure, which comprises a side frame, a first pulling piece, a second pulling piece and a plurality of mounting pieces, the side frame is formed by shaping and bending a single profile material, the side frame has a first end head and a second end head which are adjacent but not connected in a relaxed state of the side frame, the first pulling piece is fixedly connected with the first end head through a plurality of mounting pieces, the second pulling piece is fixedly connected with the second end head through the remaining mounting pieces, the first pulling piece is provided with a first pulling part, the second pulling piece is provided with a second pulling part, the first pulling part and the second pulling part are detachably connected, so that the first end head and the second end head are butted against each other and spliced, and the edge regions of the diffusion plate and the back plate assembly are mounted on the side frame.

[0006] In some embodiments of this application, the first pulling part includes a first elastic arm and a second elastic arm spaced apart. Both the first elastic arm and the second elastic arm are provided with barbed hooks, and the hooks of the first elastic arm and the second elastic arm are arranged opposite to each other. The second pulling part includes an insertion groove and a buckle groove provided on the inner wall of the insertion groove. The first elastic arm and the second elastic arm are inserted into the insertion groove. Under the elastic force of the first elastic arm and the second elastic arm, the hooks of the first elastic arm and the second elastic arm are hooked into the corresponding buckle grooves. Furthermore, the first elastic arm and the second elastic arm elastically deform in opposite directions to disengage the hooks of the first elastic arm and the second elastic arm from the corresponding buckle grooves.

[0007] In some embodiments of this application, both the first elastic arm and the second elastic arm are provided with multiple hooks. The multiple hooks of the first elastic arm are arranged at intervals along the extension direction of the first elastic arm to form a rack-like structure, and the multiple hooks of the second elastic arm are arranged at intervals along the extension direction of the second elastic arm to form a rack-like structure; and / or, the second pulling part includes multiple buckle grooves, and the multiple buckle grooves are provided in a one-to-one correspondence with the multiple hooks of the first elastic arm and the multiple hooks of the second elastic arm.

[0008] In some embodiments of this application, the first end is provided with an overlap notch, and the second end is provided with an overlap flange adapted to the overlap notch. When the first end and the second end are joined together by the first tension member and the second tension member, the overlap flange overlaps within the overlap notch.

[0009] In some embodiments of this application, the panel light is disc-shaped, the side frame forms the side wall of the panel light, and the side frame is a component made by bending an extruded aluminum profile.

[0010] In some embodiments of this application, the inner wall of the side frame near the first end is provided with a first protrusion, and a first traction member is fixedly connected to the first protrusion; the inner wall of the side frame near the second end is provided with a second protrusion, and a second traction member is fixedly connected to the second protrusion.

[0011] In some embodiments of this application, the inner sidewall of the side frame is further provided with a third protrusion and at least a fourth protrusion. The fourth protrusion is located between the first protrusion and the second protrusion. The arrangement direction of the fourth protrusion and the third protrusion is along the axial direction of the assembled side frame. Furthermore, a locking space is formed between the third protrusion and the fourth protrusion, between the third protrusion and the first protrusion, and between the third protrusion and the second protrusion. The circumferential edge region of the light source assembly is installed in the locking space.

[0012] In some embodiments of this application, the inner sidewall of the side frame is also provided with a snap-fit ​​protrusion. The snap-fit ​​protrusion is located on the side of the third protrusion away from the fourth protrusion. The circumferential sidewall of the diffuser plate is provided with a snap-fit ​​groove, and the snap-fit ​​protrusion is snapped into the snap-fit ​​groove.

[0013] In some embodiments of the present application, the circumferential edge region of the back plate assembly is locked to the side frame by screws.

[0014] In some embodiments of the present application, the panel lamp further comprises a buffer layer, which is arranged between the back plate assembly and the light source assembly, and the two sides of the buffer layer abut against the light source assembly and the back plate assembly, respectively.

[0015] The present application has at least the following beneficial effects:

[0016] In the panel lamp of the present application, the diffusion plate, the light source assembly, the back plate assembly and other components are assembled together by the frame structure. In the frame structure of the panel lamp, the first end and the second end of the side frame are mutually butted and form a seamless joint state by the connection of the first pulling member and the second pulling member, wherein the first pulling member is fixedly connected with the first end of the side frame by a plurality of mounting members, and the second pulling member is fixedly connected with the second end of the side frame by the remaining mounting members. Moreover, the first pulling member is provided with a first pulling part, and the second pulling member is provided with a second pulling part, the first pulling part and the second pulling part are detachably connected, and the first end and the second end of the side frame are mutually butted and form a seamless joint state. In this way, the first end and the second end of the side frame of the frame structure no longer have a joint, thereby eliminating the situation that the panel lamp has a light leakage position at the side frame, and improving the product quality of the panel lamp. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0018] Figure 1 The assembly structure of the panel lamp of the present application is shown in the figure;

[0019] Figure 2 The assembly structure of the panel lamp of the present application is shown in the figure; Figure 1 The exploded view of the panel lamp is shown in the figure;

[0020] Figure 3 The assembly structure of the panel lamp of the present application is shown in the figure; Figure 2 The enlarged view of position A in the figure;

[0021] Figure 4 The exploded view of the frame structure of the panel lamp of the present application is shown in the figure;

[0022] Figure 5 The assembly structure of the panel lamp of the present application is shown in the figure; Figure 4 The enlarged view of position B in the figure;

[0023] Figure 6A sectional view of a panel lamp according to an embodiment of the present application;

[0024] Figure 7 A sectional view of a panel lamp according to an embodiment of the present application; Figure 6 An enlarged view of part C;

[0025] Figure 8 A front view of a side frame of a panel lamp according to an embodiment of the present application;

[0026] Figure 9 An enlarged view of part D; Figure 8 An enlarged view of part D;

[0027] Figure 10 A structural view of a first pulling member of a panel lamp according to an embodiment of the present application;

[0028] Figure 11 A structural view of a second pulling member of a panel lamp according to an embodiment of the present application.

[0029] In the drawings, the same or similar reference numerals refer to the same or similar elements throughout the drawings.

[0030] 10, diffusion plate; 11, clamping groove;

[0031] 20, light source assembly; 21, LED light source; 22, light guide plate; 23, reflecting plate; 24, gasket;

[0032] 30, back plate assembly; 31, back plate; 32, cover; 33, top cover; 34, buckling structure;

[0033] 40, frame structure; 41, side frame; 411, first end; 412, second end; 413, first protrusion; 414, second protrusion; 415, fourth protrusion; 416, third protrusion; 417, clamping space; 418, clamping protrusion; 419, overlapping notch; 419', overlapping flange; 42, first pulling member; 421, first pulling portion; 422, first elastic arm; 423, second elastic arm; 424, hook; 43, second pulling member; 431, second pulling portion; 432, insertion slot portion; 433, buckling slot; 44, mounting member;

[0034] 50, buffer layer;

[0035] 60, electrical element. DETAILED DESCRIPTION

[0036] Embodiments of the present application are described in detail below with reference to the attached drawings, which show by way of example, embodiments in which like numerals indicate like elements throughout the several figures. The embodiments described below are examples for the purposes of explanation and are not to be construed as limiting of the present application.

[0037] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0038] In addition, the terms "first", "second", and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0039] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] As shown in Figures 1 to 7 The panel lamp provided by the embodiment of the present application includes a diffusion plate 10, a light source assembly 20 and a back plate assembly 30, which are sequentially stacked, and the panel lamp further includes a surrounding frame structure 40, which includes a side frame 41, a first pulling member 42, a second pulling member 43 and a plurality of mounting members 44. The side frame 41 is formed by shaping and bending an elongated single profile. The side frame 41 has a first end head 411 and a second end head 412 which are adjacent but not connected in a relaxed state of the side frame 41. The first pulling member 42 is fixedly connected with the first end head 411 through a plurality of mounting members 44, and the second pulling member 43 is fixedly connected with the second end head 412 through the remaining mounting members 44. The first pulling member 42 is provided with a first pulling part 421, and the second pulling member 43 is provided with a second pulling part 431. The first pulling part 421 and the second pulling part 431 are detachably connected to make the first end head 411 and the second end head 412 abut and splice together. In addition, the edge regions of the diffusion plate 10 and the back plate assembly 30 are mounted on the side frame 41.

[0041] In the panel lamp of the present application, the assembling components such as the diffusion plate 10, the light source assembly 20 and the back plate assembly 30 are assembled together by the frame structure 40. In the frame structure 40 of the panel lamp, the first end head 411 and the second end head 412 of the side frame 41 are mutually butted and form a seamless joint state by the first pulling member 42 and the second pulling member 43. The first pulling member 42 is fixedly connected with the first end head 411 of the side frame 41 by the several mounting members 44, and the second pulling member 43 is fixedly connected with the second end head 412 of the side frame 41 by the remaining mounting members 44. The first pulling member 42 is provided with a first pulling part 421, and the second pulling member 43 is provided with a second pulling part 431. The first pulling part 421 and the second pulling part 431 are detachably connected, and the first end head 411 and the second end head 412 of the side frame 41 are mutually butted and form a seamless joint state. In this way, the first end head 411 and the second end head 412 of the side frame 41 of the frame structure 40 no longer have a joint, so that the panel lamp does not have a light leakage position at the side frame 41, light leakage during illumination is prevented, and the product quality of the panel lamp is improved.

[0042] As shown in Figure 5 and Figure 10 , in the first pulling member 42 of the panel lamp of the embodiment of the present application, the first pulling part 421 includes the spaced first elastic arm 422 and the second elastic arm 423. The first elastic arm 422 and the second elastic arm 423 are both provided with the barb-shaped clasp 424. The clasp 424 of the first elastic arm 422 is arranged opposite to the clasp 424 of the second elastic arm 423. Figure 5 and Figure 11As shown, in the second pulling piece 43 of the panel lamp in the embodiments of the present application, the second pulling part 431 comprises a plug-in groove part 432 and a buckle groove 433 arranged on the inner wall of the plug-in groove part 432. When the first end head 411 and the second end head 412 of the opposite frame 41 are connected, the first elastic arm 422 and the second elastic arm 423 are inserted into the plug-in groove part 432, and under the elastic force of the first elastic arm 422 and the second elastic arm 423, the buckles 424 of the first elastic arm 422 and the buckles 424 of the second elastic arm 423 are hooked on the corresponding buckle grooves 433. And when it is necessary to disassemble the panel lamp to maintain or replace the internal components, the first elastic arm 422 and the second elastic arm 423 are elastically deformed in the opposite direction between them to make the buckles 424 of the first elastic arm 422 and the buckles 424 of the second elastic arm 423 disengage from the corresponding buckle grooves 433, and then the first elastic arm 422 and the second elastic arm 423 are pulled out of the plug-in groove part 432, that is, the first end head 411 and the second end head 412 of the opposite frame 41 are separated, so that the internal components of the panel lamp can be disassembled, maintained or replaced. The detachable connection mode of the buckles 424 of the first elastic arm 422 and the second elastic arm 423 and the buckle grooves 433 of the plug-in groove part 432 assembles the first end head 411 and the second end head 412 of the opposite frame 41, which not only simplifies and speeds up the assembly process, but also simplifies and speeds up the disassembly process, which is beneficial to improve the disassembly efficiency.

[0043] In some embodiments of the present application, the first elastic arm 422 and the second elastic arm 423 are each provided with a plurality of buckles 424, and the plurality of buckles 424 of the first elastic arm 422 are arranged in a rack-like structure along the extension direction of the first elastic arm 422, and the plurality of buckles 424 of the second elastic arm 423 are arranged in a rack-like structure along the extension direction of the second elastic arm 423. And in this embodiment, on the inner wall of the plug-in groove part 432, only one buckle groove 433 is arranged corresponding to the buckles 424 of the first elastic arm 422, and only one buckle groove 433 is arranged corresponding to the buckles 424 of the second elastic arm 423. In this way, when the first end head 411 and the second end head 412 of the opposite frame 41 are connected, the first elastic arm 422 and the second elastic arm 423 are inserted into the plug-in groove part 432 until the first end head 411 and the second end head 412 are mutually butted and form a seamless splicing state, at this time, one of the buckles 424 on the first elastic arm 422 and one of the buckles 424 on the second elastic arm 423 are hooked on the corresponding buckle grooves 433, thereby maintaining the seamless splicing state of the first end head 411 and the second end head 412.

[0044] In some embodiments of the present application, the second pulling portion 431 comprises a plurality of buckling grooves 433, which are arranged one-to-one corresponding to the plurality of buckling hooks 424 of the first elastic arm 422 and the plurality of buckling hooks 424 of the second elastic arm 423. In the present embodiment, only one buckling hook 424 is arranged on the first elastic arm 422, and only one buckling hook 424 is arranged on the second elastic arm 423. Thus, when the first end head 411 and the second end head 412 of the opposite side frame 41 are connected, the first elastic arm 422 and the second elastic arm 423 are inserted into the plug-in groove portion 432 until the first end head 411 and the second end head 412 are mutually butted and form a seamless splicing state. At this time, the one buckling hook 424 on the first elastic arm 422 is hooked on the corresponding one of the plurality of buckling grooves 433, and the one buckling hook 424 on the second elastic arm 423 is hooked on the corresponding one of the plurality of buckling grooves 433, thereby maintaining the seamless splicing state of the first end head 411 and the second end head 412.

[0045] In some other embodiments of the present application, the first elastic arm 422 and the second elastic arm 423 are each provided with a plurality of buckling hooks 424. The plurality of buckling hooks 424 of the first elastic arm 422 are arranged in a rack-like structure along the extension direction of the first elastic arm 422, and the plurality of buckling hooks 424 of the second elastic arm 423 are arranged in a rack-like structure along the extension direction of the second elastic arm 423. The second pulling portion 431 comprises a plurality of buckling grooves 433, which are arranged one-to-one corresponding to the plurality of buckling hooks 424 of the first elastic arm 422 and the plurality of buckling hooks 424 of the second elastic arm 423. Thus, when the first end head 411 and the second end head 412 of the opposite side frame 41 are connected, the first elastic arm 422 and the second elastic arm 423 are inserted into the plug-in groove portion 432 until the first end head 411 and the second end head 412 are mutually butted and form a seamless splicing state. At this time, the plurality of buckling hooks 424 on the first elastic arm 422 are one-to-one hooked on the corresponding buckling grooves 433, and the plurality of buckling hooks 424 on the second elastic arm 423 are one-to-one hooked on the corresponding buckling grooves 433, thereby maintaining the seamless splicing state of the first end head 411 and the second end head 412.

[0046] In order to ensure that the first end head 411 and the second end head 412 of the side frame 41 are butted to form a seamless splicing state, Figure 8 and Figure 9As shown, the first end 411 is provided with a lap notch 419, and the second end 412 is provided with a lap flange 419' matched with the lap notch 419. When the first end 411 and the second end 412 are spliced by the first pulling member 42 and the second pulling member 43, the lap flange 419' is lapped in the lap notch 419. In this way, after the first end 411 and the second end 412 of the side frame 41 are butted, the joint between the first end 411 and the second end 412 of the side frame 41 is in a form of a turn in the radial direction of the annular side frame 41, so as to ensure that the first end 411 and the second end 412 of the side frame 41 are butted to form a seamless splicing state, i.e., the joint between the first end 411 and the second end 412 no longer has a light leakage problem.

[0047] In the embodiment of the present application, the panel lamp is disc-shaped, and the side frame 41 constitutes the side wall of the panel lamp. In addition, the side frame 41 is a component made by bending an aluminum extruded profile. The aluminum profile is light in weight and high in strength, which is beneficial to the light weight of the panel lamp.

[0048] As shown in Figures 3 to 5 , Figure 7 and Figure 9 , in the panel lamp of the embodiment of the present application, the side frame 41 is provided with a first protrusion 413 on the inner side wall close to the first end 411, and the first pulling member 42 is fixedly connected to the first protrusion 413. The side frame 41 is provided with a second protrusion 414 on the inner side wall close to the second end 412, and the second pulling member 43 is fixedly connected to the second protrusion 414. Specifically, the mounting member 44 is a screw, and the first pulling member 42 and the second pulling member 43 are locked by the screw, i.e., the first pulling member 42 is locked to the first protrusion 413 by the screw, and the second pulling member 43 is locked to the second protrusion 414 by the screw.

[0049] Further, in the panel lamp of the embodiment of the present application, as shown in Figure 3 , Figure 5 and Figure 7As shown, the inner side wall of the side frame 41 is further provided with a third protrusion 416 and at least one fourth protrusion 415, the fourth protrusion 415 is located between the first protrusion 413 and the second protrusion 414, the arrangement direction of the fourth protrusion 415 and the third protrusion 416 is along the axis direction of the spliced side frame 41, and the third protrusion 416, the fourth protrusion 415, the first protrusion 413 and the second protrusion 414 together form a clamping space 417, and the circumferential edge region of the light source assembly 20 is mounted in the clamping space 417. The light source assembly 20 is assembled by clamping assembly, the circumferential edge region of the light source assembly 20 is inserted into the clamping space 417 when the first end 411 and the second end 412 of the side frame 41 are in a relaxed state, and then the first end 411 and the second end 412 are connected by the first pulling piece 42 and the second pulling piece 43 to form a seamless butt joint state, so as to fix the light source assembly 20 and improve the assembly efficiency of the light source assembly 20 to the side frame 41.

[0050] As shown in Figure 3 , Figure 5 and Figure 7 , in the panel lamp of the embodiment of the present application, the inner side wall of the side frame 41 is further provided with a clamping protrusion 418, the clamping protrusion 418 is located on the side of the third protrusion 416 away from the fourth protrusion 415, the circumferential side wall of the diffusion plate 10 is provided with a clamping groove 11, and the clamping protrusion 418 is clamped in the clamping groove 11. In this way, the diffusion plate 10 is clamped and stabilized by the side frame 41, the assembly structure is simple, and the assembly efficiency is high.

[0051] In the panel lamp of the embodiment of the present application, as shown in Figure 1 and Figure 6 , the circumferential edge region of the back plate assembly 30 is locked to the side frame 41 by screws. As shown in Figure 1 , Figure 2 , Figure 6 and Figure 7 , the back plate assembly 30 includes a back plate 31, a cover 32 and a top cover 33, the circumferential edge region of the back plate 31 is locked to the side frame 41 by screws, then the screws are covered and hidden by clamping or bonding the cover 32 to the back plate 31, the side of the back plate 31 away from the LED light source assembly 20 is provided with electrical elements 60, the electrical elements 60 are electrically connected with the LED light source 21 of the light source assembly 20, and then the top cover 33 is covered on the back plate 31, and the back plate 31 is provided with a buckling structure 34, and the top cover 33 is locked by the buckling structure 34.

[0052] As shown in Figure 2 , Figure 6 and Figure 7As shown in the panel light of the embodiment of the present application, the panel light further comprises a buffer layer 50, which is arranged between the back plate assembly 30 and the light source assembly 20, and the two sides of the buffer layer 50 abut against the light source assembly 20 and the back plate assembly 30 respectively. In this way, when the back plate assembly 30 and the light source assembly 20 are assembled in a stacked manner, the buffer layer 50 forms a buffer between the back plate assembly 30 and the light source assembly 20, and the buffer layer 50 is made of an insulating material, which can form insulation between the back plate assembly 30 and the light source assembly 20.

[0053] As shown in the panel light of the embodiment of the present application, the panel light further comprises a buffer layer 50, which is arranged between the back plate assembly 30 and the light source assembly 20, and the two sides of the buffer layer 50 abut against the light source assembly 20 and the back plate assembly 30 respectively. In this way, when the back plate assembly 30 and the light source assembly 20 are assembled in a stacked manner, the buffer layer 50 forms a buffer between the back plate assembly 30 and the light source assembly 20, and the buffer layer 50 is made of an insulating material, which can form insulation between the back plate assembly 30 and the light source assembly 20. Figure 2 、 Figure 6 and Figure 7 As shown in the panel light of the embodiment of the present application, the panel light further comprises a buffer layer 50, which is arranged between the back plate assembly 30 and the light source assembly 20, and the two sides of the buffer layer 50 abut against the light source assembly 20 and the back plate assembly 30 respectively. In this way, when the back plate assembly 30 and the light source assembly 20 are assembled in a stacked manner, the buffer layer 50 forms a buffer between the back plate assembly 30 and the light source assembly 20, and the buffer layer 50 is made of an insulating material, which can form insulation between the back plate assembly 30 and the light source assembly 20.

[0054] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A panel light comprising a diffusion plate (10), a light source assembly (20) and a back plate assembly (30) which are sequentially stacked; characterized in that, The panel lamp further comprises: The frame structure (40) comprises a side frame (41), a first pulling member (42), a second pulling member (43) and a plurality of mounting members (44), the side frame (41) is formed by shaping and bending an elongated single profile, the side frame (41) has a first end (411) and a second end (412) adjacent but not connected in a relaxed state of the side frame (41), the first pulling member (42) is fixedly connected with the first end (411) through a plurality of mounting members (44), the second pulling member (43) is fixedly connected with the second end (412) through the remaining mounting members (44), the first pulling member (42) is provided with a first pulling part (421), the second pulling member (43) is provided with a second pulling part (431), the first pulling part (421) and the second pulling part (431) are detachably connected, so that the first end (411) and the second end (412) are butted and spliced, and the edge regions of the diffusion plate (10) and the back plate assembly (30) are mounted on the side frame (41).

2. The panel lamp according to claim 1, wherein The first pulling part (421) comprises a first elastic arm (422) and a second elastic arm (423) spaced apart, the first elastic arm (422) and the second elastic arm (423) are provided with barb-shaped buckles (424), and the buckles (424) of the first elastic arm (422) and the second elastic arm (423) are arranged oppositely; The second pulling part (431) comprises a plug-in groove part (432) and a buckle groove (433) arranged on the inner wall of the plug-in groove part (432); The first elastic arm (422) and the second elastic arm (423) are inserted into the plug-in groove part (432), under the elastic force of the first elastic arm (422) and the second elastic arm (423), the buckles (424) of the first elastic arm (422) and the second elastic arm (423) are hooked on the corresponding buckle grooves (433), and the first elastic arm (422) and the second elastic arm (423) are elastically deformed in the opposite direction to make the buckles (424) of the first elastic arm (422) and the second elastic arm (423) disengage from the corresponding buckle grooves (433).

3. The panel lamp according to claim 2, wherein The first elastic arm (422) and the second elastic arm (423) are each provided with a plurality of buckles (424), the plurality of buckles (424) of the first elastic arm (422) are arranged in a rack-like structure along the extension direction of the first elastic arm (422), the plurality of buckles (424) of the second elastic arm (423) are arranged in a rack-like structure along the extension direction of the second elastic arm (423); and / or, The second pulling part (431) comprises a plurality of the buckle grooves (433), and the plurality of the buckle grooves (433) are arranged one by one in correspondence with the plurality of the buckle hooks (424) of the first elastic arm (422) and the plurality of the buckle hooks (424) of the second elastic arm (423).

4. The panel lamp according to claim 1, characterized in that, The first end (411) is provided with a lap joint notch (419), and the second end (412) is provided with a lap joint flange (419') matched with the lap joint notch (419), when the first end (411) and the second end (412) are spliced by the first pulling piece (42) and the second pulling piece (43), the lap joint flange (419') is lapped in the lap joint notch (419).

5. The panel lamp according to any one of claims 1-4, characterized in that, The panel lamp is disc-shaped, the side frame (41) constitutes the side wall of the panel lamp, and the side frame (41) is a component made by bending a circular aluminum extrusion profile.

6. The panel lamp according to claim 5, characterized in that, The side frame (41) is provided with a first protrusion (413) on the inner side wall close to the first end (411), the first pulling piece (42) is fixedly connected to the first protrusion (413), the side frame (41) is provided with a second protrusion (414) on the inner side wall close to the second end (412), and the second pulling piece (43) is fixedly connected to the second protrusion (414).

7. The panel lamp according to claim 6, characterized in that: The inner side wall of the side frame (41) is further provided with a third protrusion (416) and at least one fourth protrusion (415), the fourth protrusion (415) is located between the first protrusion (413) and the second protrusion (414), the arrangement direction of the fourth protrusion (415) and the third protrusion (416) is along the axis direction of the spliced side frame (41), and the third protrusion (416), the fourth protrusion (415), the first protrusion (413) and the second protrusion (414) together form a clamping space (417) between the third protrusion (416) and the fourth protrusion (415), between the third protrusion (416) and the first protrusion (413), and between the third protrusion (416) and the second protrusion (414), and the circumferential edge region of the light source assembly (20) is installed in the clamping space (417).

8. The panel lamp according to claim 7, characterized in that: The inner side wall of the side frame (41) is further provided with a clamping protrusion (418), the clamping protrusion (418) is located on the side away from the fourth protrusion (415) of the third protrusion (416), the circumferential side wall of the diffusion plate (10) is provided with a clamping groove (11), and the clamping protrusion (418) is clamped in the clamping groove (11).

9. The panel lamp according to claim 5, characterized in that: The circumferential edge region of the back plate assembly (30) is locked to the side frame (41) by screws.

10. The panel lamp according to claim 9, characterized in that: The panel lamp further comprises a buffer layer (50) arranged between the back plate assembly (30) and the light source assembly (20), and two sides of the buffer layer (50) abut against the light source assembly (20) and the back plate assembly (30) respectively.

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