Lamp body and lighting device

Abstract

The utility model discloses a lamp body and a lighting device, and the lamp body comprises a frame which is of an annular structure; the isolation layer is arranged in the frame and divides the frame into a first space and a second space which are independent from each other, and the first space and the second space are distributed in the axial direction of the frame; the light guide plate is arranged in the first space, and the light guide plate and the isolation layer are arranged in a stacked mode; the first light source is located in the first space, and the first light source is arranged on the inner peripheral wall of the frame and corresponds to the side face of the light guide plate; the back plate covers the second space, and a light hole is formed in the back plate; and the second light source is arranged in the second space, and the second light source is arranged corresponding to the light hole and emits light towards the light hole. In this way, the lamp body can provide a large illumination range through double-face light emitting, and shadows are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lighting, in particular to a lamp body and a lighting device. BACKGROUND

[0002] With the progress of society and the improvement of living quality, people have higher and higher requirements for lighting devices. Traditional lighting devices such as table lamps and floor lamps have a single lighting mode and can only illuminate a small range of space, which is difficult to meet the diversified needs of users. CONTENT

[0003] The main purpose of the present application is to provide a lamp body and a lighting device, which can provide a larger lighting range through double-sided light emission and avoid the generation of shadows.

[0004] To achieve the above purpose, the present application provides a lamp body, which comprises:

[0005] a frame in a ring structure;

[0006] a separation layer arranged in the frame and separating the frame into a first space and a second space independent of each other, the first space and the second space being distributed along the axial direction of the frame;

[0007] a light guide plate arranged in the first space and stacked with the separation layer;

[0008] a first light source located in the first space, the first light source being arranged on the inner circumferential wall of the frame and corresponding to the side surface of the light guide plate;

[0009] a back plate covering the second space, the back plate being provided with a light transmission hole; and

[0010] a second light source arranged in the second space, the second light source being arranged corresponding to the light transmission hole and emitting light towards the light transmission hole.

[0011] Optionally, the lamp body further comprises a diffusion plate, a fixing plate and a circuit board, the fixing plate being arranged in the second space and stacked with the separation layer, the fixing plate being fixed with the frame, the diffusion plate and the circuit board being arranged on the side of the fixing plate away from the separation layer, the diffusion plate being fixed with the fixing plate and clamping the circuit board together, the second light source being fixed on the circuit board and covered by the diffusion plate.

[0012] Optionally, one side of the fixing plate is recessed to form a recessed area, the diffusion plate and the circuit board being arranged in the recessed area; the other side of the fixing plate forms a protruding area corresponding to the recessed area, the protruding area abutting against the separation layer.

[0013] Optionally, the recessed area comprises a first recess and a second recess recessed from a bottom of the first recess, the diffusion plate is accommodated in the first recess, and the circuit board is accommodated in the second recess.

[0014] Optionally, the diffusion plate is clamped with the fixing plate.

[0015] Optionally, the lamp body further comprises a light-transmitting cover, the light-transmitting cover covers the light-transmitting hole, and the diffusion plate is located on a side of the back plate facing the second space and covers the light-transmitting hole.

[0016] Optionally, the light-transmitting cover comprises a light-transmitting main body and a fixing ring, the fixing ring is arranged on a side of the back plate away from the second space, the fixing ring is arranged around the light-transmitting hole, the light-transmitting main body is fixed on the fixing ring, and the light-transmitting main body is arranged in a spaced manner with the back plate; an end of the fixing ring away from the back plate is provided with a positioning groove, an edge of the light-transmitting main body is provided with a positioning protrusion, and the positioning protrusion is inserted and matched with the positioning groove; and / or,

[0017] The light-transmitting cover is provided with a first magnetic attraction element, the diffusion plate is provided with a second magnetic attraction element, and the first magnetic attraction element and the second magnetic attraction element are magnetically attracted and matched.

[0018] Optionally, the diffusion plate comprises a diffusion plate support and a diffusion plate main body which are integrally formed or sleeved, a middle region of the diffusion plate support is provided with a light-emitting hole corresponding to the second light source, the diffusion plate main body covers the light-emitting hole, and the diffusion plate support is fixed with the fixing plate.

[0019] Optionally, the middle region of the diffusion plate support is arranged in a grid shape to form a plurality of light-emitting holes, the second light source comprises a plurality of light-emitting elements, the light-emitting elements are located in the light-emitting holes, and a plurality of the light-emitting elements and a plurality of the light-emitting holes are arranged in one-to-one correspondence.

[0020] Optionally, a side of the light guide plate away from the isolation layer is silk-screen printed with a ring-shaped reflecting layer, the reflecting layer is adjacent to an edge of the light guide plate and extends along a circumferential direction of the light guide plate.

[0021] Embodiments of the present application further provide a lighting device, comprising:

[0022] a lamp body;

[0023] a base; and

[0024] a support rod, a lower end of the support rod is connected with the base, and an upper end of the support rod is connected with the lamp body.

[0025] The technical scheme in the embodiment of the application, through the simultaneous setting of the first light source and the second light source, makes the whole lamp body emit light from two sides, the front side emits light by the first light source as working illumination light, and the back side emits light by the second light source as environmental backlight. The light emitting mode of the front and back sides can illuminate a larger range, avoid the generation of back side shadow, and meanwhile, the illumination mode is diversified, which can meet the diversified needs of users.

[0026] In addition, the setting of the isolation layer blocks the mutual influence of the light emitted by the first light source and the second light source, and avoids the generation of the light leakage phenomenon. Thus, the softness of the light emission of the front and back sides of the lamp body is ensured. Meanwhile, the isolation layer also plays a role in isolating the mutual conduction of the heat generated by the circuit boards of the first light source and the second light source. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme in the embodiment of the application, the drawings needed to be used in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0028] Figure 1 The structure schematic diagram of the lighting device in the embodiment of the application is shown in FIG. 1.

[0029] Figure 2 The structure schematic diagram of the lamp body of the lighting device in the embodiment of the application is shown in FIG. 2. Figure 1

[0030] Figure 3 The exploded schematic diagram of the lamp body of the lighting device in the embodiment of the application is shown in FIG. 3. Figure 1

[0031] Figure 4 The exploded schematic diagram of part of the structure of the lamp body in the embodiment of the application is shown in FIG. 4. Figure 3

[0032] Figure 5 The plane schematic diagram of part of the structure of the lamp body in the embodiment of the application is shown in FIG. 5. Figure 2

[0033] Figure 6 The sectional view along the A-A line in the embodiment of the application is shown in FIG. 6. Figure 5

[0034] Figure 7 The enlarged view of the C in the embodiment of the application is shown in FIG. 7. Figure 6

[0035] Figure 8 The sectional view of the lamp body in the embodiment of the application is shown in FIG. 8, wherein the sectional position is along the B-B line in FIG. 2. Figure 1 Figure 5

[0036] ​​​​​​​​Figure 9 is Figure 8 enlarged view of the middle D;

[0037] Figure 10 is Figure 2 structure diagram of the fixed plate in the middle;

[0038] Figure 11 is Figure 10 structure diagram of the fixed plate in the middle from another angle.

[0039] BRIEF DESCRIPTION OF DRAWINGS

[0040]

[0041] DETAILED DESCRIPTION

[0042] 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 of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0043] It should be noted that, in the description of the present application, if the terms "first", "second", etc. appear, "first", "second" are only used for convenient description of different components or names, and cannot be understood as indicating or implying the order relationship, relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first", "second" can explicitly or implicitly include at least one of the features. In addition, if "and / or" appears throughout the text, it means that it includes three parallel schemes. For example, "A and / or B" includes A scheme, or B scheme, or A and B schemes that satisfy at the same time.

[0044] Please refer to Figures 1 to 9The embodiment of the present application provides a lamp body 10, which comprises a frame 11, a separation layer 12, a light reflection layer 13, a first light source 14, a light guide plate 15 and a second light source 16. The frame 11 is in a ring structure. The separation layer 12 is arranged in the frame 11 and separates the frame 11 into a first space 111 and a second space 112 which are independent of each other. The first space 111 and the second space 112 are distributed along the axial direction of the frame 11. The light reflection layer 13 is arranged in the first space 111 and is stacked with the separation layer 12. The first light source 14 is arranged on the inner circumferential wall of the frame 11 and is located in the first space 111. The light guide plate 15 is arranged in the first space 111, and the side of the light guide plate 15 corresponds to the first light source 14. Thus, the first light source 14 emits light to the side of the light guide plate 15, and the first light source 14 is a side light source. The light emitted by the first light source 14 is reflected by the light guide plate 15 and then irradiated, and the light is soft and the illumination range is wide. The second light source 16 is arranged in the second space 112, and the second light source 16 is a direct light source.

[0045] In the embodiment of the present application, the first light source 14 and the second light source 16 are arranged at the same time, so that the lamp body 10 emits light on both sides. The first light source 14 emits light on the front side as working light, and the second light source 16 emits light on the back side as environmental backlight. The light emitting mode on both sides can illuminate a larger range and avoid the generation of back shadow. Meanwhile, the illumination mode is diversified, which can meet the diversified needs of users.

[0046] Part of the light emitted by the first light source 14 directly passes through the light guide plate 15 and is emitted, and the other part of the light is reflected by the light reflection layer 13 and then passes through the light guide plate 15 and is emitted. The light guide plate 15 has the effect of uniform light, so that the light emitted from the light guide plate 15 is uniform and soft. The first light source 14 can be used as a main light source to directly illuminate the to-be-illuminated area. The second light source 16 can be used as an auxiliary light source by increasing the second light source 16. The illumination direction of the second light source 16 is opposite to that of the first light source 14, so that the second light source 16 can supplement light on the back side.

[0047] In addition, the separation layer 12 blocks the mutual influence of the light emitted by the first light source 14 and the second light source 16, and avoids the generation of light leakage. Thus, the softness of the light emitted on both sides of the lamp body 10 is ensured. Meanwhile, the separation layer 12 also has the effect of heat insulation, which isolates the heat generated by the circuit board of the first light source 14 and the circuit board of the second light source 16 from each other to avoid heat conduction.

[0048] The first light source 14 and the second light source 16 are distributed along the axial direction of the frame 11, which means that the first light source 14 and the second light source 16 are distributed along the thickness direction of the lamp body 10. The structure characteristics of the frame 11 are utilized, and the frame 11 does not need to additionally open a light transmission hole according to the first light source 14 and the second light source 16.

[0049] The insulating layer 12 can be a rigid structure, such as a black light-shielding plate. Alternatively, the insulating layer 12 can be a flexible structure, such as foam or sponge, to fill the gap between the frame 11 and the reflective layer 13, preventing light leakage and heat transfer.

[0050] Furthermore, the lamp body 10 also includes a diffuser plate (hereinafter referred to as the second diffuser plate 17), a fixing plate 18, and a circuit board 19. The fixing plate 18 is located in the second space 112 and is stacked with the isolation layer 12. The fixing plate 18 is fixed to the frame 11. The second diffuser plate 17 and the circuit board 19 are located on the side of the fixing plate 18 facing away from the isolation layer 12. The second diffuser plate 17 is fixed to the fixing plate 18 and together clamps the circuit board 19. The second light source 16 is fixed to the circuit board 19 and covered by the second diffuser plate 17. In this embodiment, the second diffuser plate 17 has multiple functions: First, it diffuses the light emitted by the second light source 16; second, by fixing the second diffuser plate 17 to the fixing plate 18, it simultaneously fixes the circuit board 19 and the second light source 16, eliminating the need for the circuit board 19 to be additionally fixed to the fixing plate 18 or other structures, thus simplifying the installation of the circuit board 19. The fixing plate 18 provides support for the circuit board 19.

[0051] In some embodiments, the second diffuser plate 17 is snapped into the fixing plate 18. Optionally, the fixing plate 18 has a locking hole, and the second diffuser plate 17 is provided with a buckle to engage with the locking hole. Of course, the second diffuser plate 17 and the fixing plate 18 can also be secured with screws.

[0052] In some embodiments, the fixing plate 18 and the frame 11 may be fixed by means of snap-fit, screw connection or welding.

[0053] Please refer to the reference. Figure 10 and Figure 11 In some embodiments, one side of the fixing plate 18 is recessed to form a recessed area, where the second diffuser plate 17 and the circuit board 19 are disposed; the other side of the fixing plate 18 forms a protruding area 183 corresponding to the recessed area, which abuts against the isolation layer 12. In this embodiment, the formation of the recessed area and the protruding area 183 of the fixing plate 18 helps to strengthen the structural strength of the fixing plate 18. The second diffuser plate 17 and the circuit board 19 utilize this structural feature to be accommodated within the recessed area, making the overall structure more compact and also facilitating the installation and positioning of the second diffuser plate 17 and the circuit board 19. Furthermore, the protruding area 183 abuts against the isolation layer 12, preventing the isolation layer 12 from moving arbitrarily. Further, the position of the fixing plate 18 where the protruding area 183 is not formed is spaced apart from the isolation layer 12, and this gap effectively forms a heat dissipation space, which is beneficial for the overall heat dissipation of the device.

[0054] In some embodiments, a portion of the recessed area includes a first groove 181 and a second groove 182 recessed from the bottom of the first groove 181, thus the first groove 181 and the second groove 182 effectively form a stepped groove. A second diffuser plate 17 is housed in the first groove 181, and a circuit board 19 is housed in the second groove 182. The second diffuser plate 17 and the circuit board 19 are separately disposed in different grooves. The bottom wall of the first groove 181 supports the second diffuser plate 17, reducing the pressure exerted by the second diffuser plate 17 on the circuit board 19, thereby providing better protection for the circuit board 19. Other recessed areas are formed only in a single recess without forming a stepped groove.

[0055] The second diffuser plate 17 can be a smooth plate, or it can be a perforated plate. When light passes through the perforated part of the second diffuser plate 17, it is diffused by reflection and refraction through the side wall of the perforated part.

[0056] Please refer to the reference again. Figure 3 , Figure 4 and Figure 9 Furthermore, the lamp body 10 also includes a back plate 20, which covers the second space 112. The back plate 20 has a light-transmitting hole 21 corresponding to the second light source 16. The second light source 16 emits light facing the light-transmitting hole 21, and the light shines directly out from the light-transmitting hole 21, which can provide a brighter and more focused lighting effect. In this embodiment, the second light source 16 is a direct-lit light source or a direct-emitting light source, and the second light source 16 is located directly at the bottom of the table lamp.

[0057] Furthermore, the lamp body 10 also includes a light-transmitting cover 50, which covers the light-transmitting hole 21. The second diffuser plate 17 is located on the side of the back plate 20 facing the second space 112 and covers the light-transmitting hole 21. The light-transmitting cover 50 can be a common light-transmitting protective cover, which serves a protective function.

[0058] In some embodiments, the light-transmitting cover 50 includes a light-transmitting body 22 and a fixing ring 23. The fixing ring 23 is disposed on the side of the back plate 20 facing away from the second space 112, and surrounds the light-transmitting hole 21. The light-transmitting body 22 is fixed to the fixing ring 23, and there is a gap between the light-transmitting body 22 and the back plate 20. In this embodiment, the light-transmitting body 22 can provide waterproof and dustproof protection for internal structures such as the light source and the second diffuser plate 17. The light-transmitting body 22 can be made of a material with light-guiding effect, such as a light guide plate. Alternatively, the light-transmitting body 22 can be a common light-transmitting protective cover. Optionally, the light-transmitting body 22 can be a prism plate to prevent glare. The fixing ring 23 protrudes from the outside of the back plate 20, so that there is a gap G between the light-transmitting body 22 and the back plate 20. Figure 7 The space G at this location forms a heat dissipation space and a light uniformity space.

[0059] In some embodiments, the retaining ring 23 is racetrack shaped.

[0060] In some embodiments, the end of the fixing ring 23 facing away from the back plate 20 is provided with a positioning groove 231, and the edge of the light-transmitting body 22 is provided with a positioning protrusion 221, which is inserted into the positioning groove 231. Optionally, both the positioning groove 231 and the positioning protrusion 221 are annular. By the insertion and engagement of the positioning protrusion 221 and the positioning groove 231, the light-transmitting body 22 can be positioned, preventing lateral movement of the light-transmitting body 22. Optionally, the light-transmitting body 22 and the fixing ring 23 can be fixed by means of adhesive bonding or magnetic connection.

[0061] Please refer to the reference again. Figure 7 In some embodiments, the light-transmitting cover 50 is provided with a first magnetic 232. Specifically, the fixing ring 23 is provided with the first magnetic 232, and the second diffuser plate 17 is provided with a second magnetic 171. The first magnetic 232 and the second magnetic 171 are magnetically attracted to each other. Thus, the fixing ring 23 and the second diffuser plate 17 are magnetically connected, making it convenient to remove the entire assembly formed by the fixing ring 23 and the light-transmitting body 22 from the back plate 20.

[0062] Specifically, the fixing ring 23 has a groove on the side facing the back plate 20, and the first magnetic member 232 is accommodated in the groove. Similarly, the second diffuser plate 17 has a receiving groove on the side facing the back plate 20, and the second magnetic member 171 is accommodated in the receiving groove. Optionally, a plurality of first magnetic members 232 are arranged circumferentially on the fixing ring 23, and correspondingly, a plurality of second magnetic members 171 are arranged on the second diffuser plate 17.

[0063] In this embodiment, the light-transmitting main body 22 and the fixing ring 23 are combined to form a whole, which together play the role of anti-glare.

[0064] Please refer to the reference again. Figure 4 and Figure 7 Furthermore, the second diffuser plate 17 includes a diffuser plate bracket 173 and a diffuser plate body 24, which are integrally formed or die-cast. A light-emitting hole 172 is provided in the middle region of the diffuser plate bracket 173 corresponding to the second light source 16. The diffuser plate body 24 covers the light-emitting hole 172, and the diffuser plate bracket 173 is fixed to the fixing plate 18. The diffuser plate body 24 is located between the diffuser plate bracket 173 and the light-transmitting body 22. The light emitted by the second light source 16 passes sequentially through the diffuser plate bracket 173, the diffuser plate body 24, and the light-transmitting body 22 before exiting. The diffuser plate bracket 173 provides a platform for the diffuser plate body 24 to be fixed on the lamp body 10, while the diffuser plate body 24 diffuses the light. Thus, all the light emitted by the second light source 16 is directed upwards through the light-emitting hole 172, resulting in a more concentrated upward light emission.

[0065] In some embodiments, the middle region of the diffuser plate support 173 is arranged in a grid shape to form a plurality of light-emitting holes 172. Each light-emitting hole 172 is essentially independently arranged, which can reduce interference between adjacent light sources and reduce glare. Optionally, the light-emitting hole 172 is a rectangular hole.

[0066] The second light source 16 includes multiple light-emitting elements, each of which can refer to a single LED. The light-emitting elements are located within light-emitting holes 172, and each set of multiple light-emitting elements corresponds one-to-one with a set of multiple light-emitting holes 172. Therefore, the light emitted by the light-emitting elements can be concentrated and emitted upwards from the light-emitting holes 172, reducing interference between adjacent light-emitting elements and thus reducing glare. In this embodiment, the one-to-one correspondence between multiple light-emitting elements and multiple light-emitting holes 172 means that each light-emitting element is located within one light-emitting hole 172, and a maximum of one light-emitting element is located within one light-emitting hole 172. For all light-emitting holes 172, either all light-emitting holes 172 may contain light-emitting elements, or only some of the light-emitting holes 172 may contain light-emitting elements.

[0067] A reflective layer (not shown) is silkscreened on the side of the light guide plate 15 opposite to the reflective layer 13, and the reflective layer is disposed near the edge of the light guide plate 15. Optionally, the reflective layer can have a white edge, such as white paint. When the light emitted by the first light source 14 shines on the edge of the light guide plate 15, the reflective layer can reflect the light back, so that the light is concentrated in the central area enclosed by the reflective layer, supplementing the light in the central area and preventing lamp shadows from appearing at the edge. The reflective layer has a reflective function, which can reflect light to the central area.

[0068] Please refer to the reference again. Figure 3 Furthermore, a first diffuser plate 25 is also stacked on the outer side of the light guide plate 15.

[0069] In some embodiments, the lamp body 10 is a flat, elongated strip, and the lamp body 10 is provided with two second light sources 16, which are spaced apart along the length direction of the lamp body 10. The first space 111 and the second space 112 are distributed along the thickness direction of the lamp body 10. Further, the lamp body 10 includes two circuit boards 19, which are spaced apart along the length direction of the lamp body 10. Each second light source 16 includes multiple light-emitting elements disposed on the same circuit board 19.

[0070] This application also provides a lighting device, which can be a floor lamp, table lamp, or ceiling lamp, etc., and is not specifically limited thereto. Please refer to the references. Figure 1 and Figure 11 The lighting device includes a lamp body 10, a base 30, and a support rod 40. The lower end of the support rod 40 is connected to the base 30, and the upper end of the support rod 40 is connected to the lamp body 10. The specific structure of the lamp body 10 is described in the above embodiment and will not be repeated here.

[0071] The base 30 can be a flat structure in the shape of a disc or a square, serving a supporting function. The lower end of the support rod 40 is fixed to the base 30, and the upper end of the support rod 40 is fixed to the lamp body 10. The support rod 40 can be a telescopic rod, thereby adjusting the height of the lamp body 10. Specifically, the support rod 40 can be a vertical rod, or it can be an L-shaped rod structure.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A lamp body, characterized in that, include: The border has a ring-shaped structure. An isolation layer is disposed within the frame and divides the frame into a first space and a second space that are independent of each other, the first space and the second space being distributed along the axial direction of the frame; A light guide plate is disposed in the first space and is stacked with the isolation layer; A first light source is located in the first space. The first light source is disposed on the inner peripheral wall of the frame and is disposed on the side of the light guide plate. A back panel, covering the second space, wherein the back panel has light-transmitting holes; and... A second light source is disposed within the second space, and the second light source is disposed corresponding to the light-transmitting hole and emits light facing the light-transmitting hole.

2. The lamp body as described in claim 1, characterized in that, The lamp body also includes a diffuser plate, a fixing plate, and a circuit board. The fixing plate is located in the second space and is stacked with the isolation layer. The fixing plate is fixed to the frame. The diffuser plate and the circuit board are located on the side of the fixing plate away from the isolation layer. The diffuser plate is fixed to the fixing plate and together clamps the circuit board. The second light source is fixed to the circuit board and covered by the diffuser plate.

3. The lamp body as described in claim 2, characterized in that, One side of the fixing plate is recessed to form a recessed area, and the diffusion plate and the circuit board are disposed in the recessed area; the other side of the fixing plate forms a raised area corresponding to the recessed area, and the raised area abuts against the isolation layer.

4. The lamp body as described in claim 3, characterized in that, The recessed area includes a first groove and a second groove recessed from the bottom of the first groove, the diffuser plate is housed in the first groove, and the circuit board is housed in the second groove.

5. The lamp body as described in claim 2, characterized in that, The diffuser plate is snapped into the fixing plate.

6. The lamp body as described in any one of claims 2 to 5, characterized in that, The lamp body also includes a light-transmitting cover, which covers the light-transmitting hole, and the diffuser plate is located on the side of the back plate facing the second space and covers the light-transmitting hole.

7. The lamp body as described in claim 6, characterized in that, The light-transmitting cover includes a light-transmitting body and a fixing ring. The fixing ring is disposed on the side of the back plate opposite to the second space and surrounds the light-transmitting hole. The light-transmitting body is fixed to the fixing ring and is spaced apart from the back plate. A positioning groove is provided at the end of the fixing ring opposite to the back plate, and a positioning protrusion is provided on the edge of the light-transmitting body. The positioning protrusion engages with the positioning groove. And / or The light-transmitting cover is provided with a first magnetic attraction element, and the diffuser plate is provided with a second magnetic attraction element. The first magnetic attraction element and the second magnetic attraction element are magnetically attracted to each other.

8. The lamp body as described in claim 2, characterized in that, The diffuser plate includes an integrally formed or die-cast diffuser plate bracket and a diffuser plate body. The middle area of ​​the diffuser plate bracket is provided with a light emission hole corresponding to the second light source. The diffuser plate body covers the light emission hole. The diffuser plate bracket is fixed to the fixing plate.

9. The lamp body as described in claim 8, characterized in that, The middle area of ​​the diffuser plate support is arranged in a grid shape to form a plurality of light-emitting holes. The second light source includes a plurality of light-emitting elements, which are located inside the light-emitting holes, and the plurality of light-emitting elements are arranged in a one-to-one correspondence with the plurality of light-emitting holes.

10. The lamp body as described in claim 1, characterized in that, A reflective layer is screen-printed on the side of the light guide plate opposite to the isolation layer. The reflective layer is adjacent to the edge of the light guide plate and extends circumferentially along the light guide plate.

11. A lighting device, characterized in that, include: The lamp body as described in any one of claims 1 to 10; Base; as well as, A support rod, the lower end of which is connected to the base, and the upper end of which is connected to the lamp body.

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