Panel lamp and processing method therefor

Abstract

The present invention relates to the technical field of lamps. Disclosed are a panel lamp and a processing method therefor. The panel lamp comprises a prismatic panel, a frame, a diffuser plate and a housing, wherein the frame is of an annular structure and is made of plastic; the prismatic panel and the housing are arranged on two opposite sides of the frame, respectively, and contact faces of the prismatic panel and the frame are melted, solidified and connected; the diffuser plate is arranged on an inner side of the frame and located between the prismatic panel and the housing, the diffuser plate and the prismatic panel are arranged in parallel, and thermal melting columns protrude from the surface of the frame that is close to the housing; and fixing holes are provided in the housing, the thermal melting columns pass through the fixing holes, and after the thermal melting columns are thermally melted, the frame can be fixedly connected to the housing. In the panel lamp of the present invention, connection reliability between parts is higher, mounting is facilitated, the production cost is low, and the impression and the use experience of a user are greatly improved.

Description

Panel lamp and processing method thereof Technical Field

[0001] The present invention relates to the technical field of lighting fixtures, and in particular to a panel lamp and a processing method thereof. Background Art

[0002] Panel lights are indoor lighting fixtures that, with their elegant and simple design, provide excellent lighting while also creating a sense of beauty. Their unique design allows light to pass through a high-transmittance diffuser, creating a uniform, planar light effect. This provides excellent illumination uniformity, a soft, comfortable, yet bright light, and effectively relieves eye fatigue.

[0003] Panel lights typically consist of a chassis and a panel, connected by bolts, snaps, or glue. All of these connection methods have gaps at the joints, which can easily allow moisture, dust, and insects to enter the panel, affecting the uniformity of the panel light. Furthermore, the stability of the connection between the two is difficult to ensure. Furthermore, bolted or snap-fit ​​connections require corresponding through-holes, snaps, and slots in the panel, which not only affects the integrity of the panel but also degrades the appearance of the panel light. Some manufacturers also incorporate a frame between the chassis and panel. However, most frames are made of aluminum alloy, which is expensive and difficult to manufacture. Furthermore, they are often connected to the chassis and panel through snaps or bolts, making assembly of the panel light extremely inconvenient and reducing processing efficiency.

[0004] Summary of the Invention

[0005] The technical problem to be solved by the present invention is that in the prior art, the connection stability between the components of panel lights is poor, which makes assembly inconvenient and the production cost high. Based on this, the present invention provides a panel light with a strong connection structure, easy assembly and low production cost.

[0006] With respect to the above panel lamp, the present invention further provides a method for processing the panel lamp.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a panel lamp, including a prism panel, a frame, a diffuser plate and a shell, the frame is annular and made of plastic, the prism panel and the shell are respectively arranged on opposite sides of the frame, the contact surfaces of the prism panel and the frame are melted and solidified, the diffuser plate is arranged on the inner side of the frame and is located between the prism panel and the shell, the diffuser plate and the prism panel are parallel to each other, a hot melt column is convexly provided on the surface of the frame close to the shell, a fixing hole is opened on the shell, the hot melt column passes through the fixing hole, and the hot melt column can fix the frame and the shell after hot melting, a receiving groove is provided on the surface of the frame close to the prism panel, the hot melt column corresponds to the receiving groove, the diffuser plate is arranged in the receiving groove and is squeezed and fixed between the frame and the prism panel.

[0008] Furthermore, a ridge is provided on the surface of the frame close to the prismatic panel, and a surface of the ridge away from the housing is fused and solidified with the prismatic panel. The space enclosed by the ridge constitutes a receiving groove for mounting the diffuser plate.

[0009] Furthermore, a portion of the projection of the heat-melting column toward the prismatic panel falls on the ridge, and another portion falls on the diffusion plate. A notch is provided on the upper surface of the frame at the inner side of the heat-melting column.

[0010] Furthermore, a fixed edge is circumferentially protruded on the inner wall of the frame, the diffuser plate is melt-solidified connected to the surface of the fixed edge close to the shell, and the prism panel is melt-solidified connected to the surface of the fixed edge away from the diffuser plate.

[0011] Furthermore, the prismatic panel completely covers the lower end surface of the frame, a fixed edge is formed on the inner wall of the frame extending inward, and the diffuser is fixedly arranged on the end surface of the fixed edge away from / close to the prismatic panel.

[0012] Furthermore, the frame is made of transparent plastic or translucent plastic.

[0013] Furthermore, the frame has a horizontal plane away from the prism panel and an inclined plane connected to the outside of the horizontal plane, the hot melt column is protruded on the horizontal plane, the open side of the shell has a horizontal plate and an inclined plate connected to the outside of the horizontal plate, the fixing hole is opened on the horizontal plate, the horizontal plate is in contact with the horizontal plane, and the inclined plate is in contact with the inclined plane.

[0014] Furthermore, the shell is made of iron sheet.

[0015] The present invention further provides a processing method applicable to any of the aforementioned panel lights, comprising the following steps:

[0016] Step S1: Fixing the diffuser plate to the inner side of the frame, then placing the prismatic panel on the end face of the frame away from the outer shell, and melting and solidifying the contact surfaces of the two, thereby welding the edge of the prismatic panel to the frame;

[0017] Step S2, flip the frame so that the prism panel faces downward, place the shell on the frame, and pass the hot melt column through the fixing hole. After the hot melt column is hot-melted, the hot melt column fixes the frame on the shell.

[0018] Compared with the prior art, the panel light of the present invention has the following advantages:

[0019] 1. The prismatic panel and the frame are fused and solidified. Compared with traditional bolt connection, snap connection or glue connection, this achieves a full-circle fusion and sealed connection between the connecting surfaces of the prismatic panel and the frame. The sealing degree is high and it is not easy to disengage. It prevents dust, mosquitoes, water vapor and other substances from entering the panel light while also improving the connection stability between the two. At the same time, the plastic frame and the prismatic panel are better sealed after hot melting, which can make the panel light meet IP40 anti-mosquito and dust resistance.

[0020] 2. When the prismatic panel and the frame are stably connected, the diffuser plate is squeezed and fixed in the receiving groove by the prismatic panel and the frame. No additional fasteners are required to fix the diffuser plate. The structure is ingenious, easy to assemble, and saves production costs.

[0021] 3. The hot melt column can be fixed to the shell after hot riveting or ultrasonic riveting and then re-molding, avoiding the stress generated in the traditional connection method and ensuring the reliability of assembly;

[0022] 4. The frame is made of transparent or translucent plastic, which makes it have good light transmission performance. When the panel light is lit, the light diffused from the side of the panel light can pass through the side of the frame, increasing the luminous area. The plastic frame is molded in one step, which is easier to process and lower in cost than the aluminum frame.

[0023] 5. The diffuser plate evenly spreads the light in the panel light. The uniform light emitted from the prism panel can eliminate the difference in the light at the hot melt column on the user's perception, making the light on the prism panel purer and greatly improving the user's perception. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and examples.

[0025] FIG1 is a perspective view of a panel light according to a first embodiment of the present invention;

[0026] FIG2 is a perspective view of the panel light shown in FIG1 from another perspective;

[0027] FIG3 is a top view of the panel light shown in FIG1 ;

[0028] FIG4 is a cross-sectional view of the panel light shown in FIG3 along AA;

[0029] FIG5 is a partial enlarged view of point B in FIG4 (when the hot melt column is not hot melted);

[0030] FIG6 is a partial enlarged view of point C in the panel light shown in FIG1;

[0031] FIG7 is a flow chart of a processing method applicable to the panel light shown in FIG1 ;

[0032] FIG8 is a schematic diagram of the structure of FIG5 in another state (after the hot melt column is hot-melt formed);

[0033] 9 is a schematic structural diagram of a panel light according to a second embodiment of the present invention (the hot melt column is not hot melted);

[0034] 10 is a schematic structural diagram of a panel light according to a third embodiment of the present invention (the hot melt column is not hot melted);

[0035] 11 is a schematic structural diagram of a panel light according to a fourth embodiment of the present invention (the hot melt column is not hot melted);

[0036] FIG12 is a schematic structural diagram of a panel light according to a fifth embodiment of the present invention (the heat-melting column is not heat-melted).

[0037] In the figure: 1. Prism panel, 2. Frame, 21. Accommodation groove, 22. Hot melt column, 23. Avoidance groove, 24. Protective part, 241. Protective plane, 25. Keel mounting plate, 26. Horizontal plane, 27. Inclined plane, 28. Raised ridge, 29. Notch, 3. Diffuser, 30. Fixed edge, 4. Shell, 41. Fixing hole, 42. Horizontal plate, 43. Inclined plate. DETAILED DESCRIPTION

[0038] The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, which only illustrates the basic structure of the present invention in a schematic manner, and therefore only shows the components related to the present invention.

[0039] Example 1

[0040] Referring to Figures 1-6 and 8, a first embodiment of the present invention provides a panel light, comprising a prismatic panel 1, a frame 2, a diffuser 3, and a housing 4. In a preferred embodiment, the frame 2 is annular and made of transparent or translucent plastic. The prismatic panel 1 and the housing 4 are respectively disposed on opposite sides of the frame 2. The contact surfaces of the prismatic panel 1 and the frame 2 are fused and solidified. The diffuser 3 is fixedly disposed on the inner side of the frame 2 and is located between the prismatic panel 1 and the housing 4. The diffuser 3 and the prismatic panel 1 are parallel to each other. Specifically, a receiving groove 21 is formed on the surface of the frame 2 near the prismatic panel 1. The diffuser plate 3 is disposed within the receiving groove 21 and is squeezed and fixed between the frame 2 and the prismatic panel 1. A heat-seal post 22 is protruding from the surface of the frame 2 near the outer shell 4. The heat-seal post 22 corresponds to the receiving groove 21, so that the projection of the heat-seal post 22 toward the prismatic panel 1 completely falls on the diffuser plate 3. The outer shell 4 has a fixing hole 41, through which the heat-seal post 22 passes. After heat staking, the heat-seal post 22 secures the frame 2 and the outer shell 4. The heat-seal method can be heat riveting or ultrasonic riveting, which is not limited here.

[0041] The panel light of the present invention features a fused, solidified connection between the prismatic panel 1 and the frame 2. Compared to traditional bolted, snap-fit, or glue-dispensing connections, this achieves a fully fused, sealed connection between the connecting surfaces of the prismatic panel 1 and the frame 2. This provides a high degree of sealing and resists disengagement, achieving an IP40 protection rating. This prevents dust, insects, and moisture from entering the panel light while also enhancing the stability of the connection. Once the prismatic panel 1 and frame 2 are securely connected, the diffuser plate 3 is squeezed and fixed within the receiving groove 21 by the prismatic panel 1 and frame 2. This secures the diffuser plate 3 without the need for additional fasteners, resulting in a clever structure that facilitates assembly and reduces production costs. Furthermore, after the heat-melt posts 22 passing through the fixing holes 41 are reshaped by heat riveting or ultrasonic riveting (the structure of the heat-melt posts 22 after heat-melting and reshaping can be seen in FIG8 ), the frame 2 can be fixed to the housing 4. This design achieves the assembly function by simply utilizing the inherent properties of the plastic. Heat-softening the plastic also avoids the stress problems associated with the various connection methods listed above, ensuring assembly reliability. More importantly, the plastic frame 2 provides feasible conditions for heat-melting curing and riveting.

[0042] During use, the prismatic panel 1 distributes light evenly and effectively mitigates glare, maintaining an UGR (glare index) of ≤19 even at high brightness, enhancing eye comfort. The frame 2 is made of transparent or translucent plastic, making it light-transmissive. When the panel light is on, light diffused from the sides of the panel light can pass through the sides of the frame 2, increasing the illuminated area and achieving a "full-screen illumination" effect. Of course, in actual production, manufacturers can also adjust the material of the frame 2 to opaque plastic or color the plastic frame 2 to create the effect of a light strip around the panel light, depending on user needs. Furthermore, when the panel light is off, the transparent plastic frame 2 visually blends seamlessly with the prismatic panel 1, creating a highly consistent appearance and enhancing the user experience. In particular, when the panel light of the present invention is installed on a white ceiling, the edges of the panel light can be unified in color with the ceiling, resulting in a more visually appealing experience. The function of the diffuser plate 3 is to diffuse light, dispersing it evenly over a wide area from its underside, thus preventing eye damage from the bright light emitted by the panel light's light-emitting components. More importantly, since the heat-seal pins 22 are also made of plastic, some of the light will diffuse from them when the panel light is turned on. Without the diffuser plate 3 installed, a user looking up at the panel light would notice a distinct "bright spot" of uneven brightness on the prismatic panel 1 corresponding to the heat-seal pins 22, creating a poor visual experience. However, with the diffuser plate 3 installed, it evenly distributes the bright light from the panel light. The uniform light emitted from the prismatic panel 1 eliminates the perceived difference in light from the heat-seal pins 22, resulting in a purer light on the prismatic panel 1 and a significantly improved viewing experience.

[0043] The frame 2 is rectangular in structure, with a ridge 28 protruding from the surface of the frame 2 proximal to the prismatic panel 1. Ribs 28 are generally rectangular in structure. The surface of ridge 28 distal from the housing 4 is fused and solidified to the surface of the prismatic panel 1. The space enclosed by ridge 28 forms a receiving slot 21 for mounting the diffuser plate 3. During assembly, ridge 28 is secured to the prismatic panel 1 via ultrasonic welding, achieving a fully sealed connection and a more reliable connection. Fusion solidification refers to the process where the two contacting surfaces first melt, then fuse and solidify to form a single unit. Fusion solidification can be achieved by laser welding, ultrasonic welding, or vibration friction welding, though this is not limited here.

[0044] In a preferred embodiment, a relief groove 23 is formed on the frame 2 on the side of the rib 28 facing away from the diffuser plate 3. The edge of the prismatic panel 1 partially obscures the notch of the relief groove 23. That is, the prismatic panel 1 is larger than the rib 28, and the edge of the prismatic panel 1 extends beyond the rib 28 to the location of the relief groove 23. This design allows the rib 28 to be slightly thinned at the interface with the prismatic panel 1 during ultrasonic welding, allowing the prismatic panel 1 to gradually approach the rib 28. The relief groove 23 clears the path of the prismatic panel 1 during movement, thereby ensuring a tight fusion of the rib 28 and the prismatic panel 1. Furthermore, during production, the prismatic panel 1 does not need to be exactly the same size as the rib 28; ultrasonic welding can be performed as long as the prismatic panel 1 is slightly larger than the rib 28. This provides a high assembly tolerance, significantly reduces processing difficulty, and improves processing efficiency. It can be understood that the length and width dimensions of the prismatic panel 1 can be 600*600mm, 595*595mm, 300*600mm or 300*300mm. During implementation, the length and width dimensions of the prismatic panel 1 can be set according to usage needs.

[0045] As a preferred embodiment, a protective portion 24 is provided on the prismatic panel 1, located on the side of the rib 28 facing away from the diffuser plate 3 and away from the thermal melt column 22. The surface of the protective portion 24 facing away from the thermal melt column 22 forms a protective plane 241. The protective plane 241 is parallel to the prismatic panel 1 and further away from the thermal melt column 22 than the prismatic panel 1 itself. In other words, as shown in FIG7 , the protective plane 241 is located below the lower surface of the prismatic panel 1. This further distances the thermal melt column 22. When the panel light is placed face-down on the ground with the prismatic panel 1 facing downward, the protective plane 241 first contacts the ground, preventing the prismatic panel 1 from contacting the ground and the risk of wear and tear, greatly facilitating transportation. Furthermore, the protective portion 24 is located on the outside of the prismatic panel 1. When the side of the panel light is subjected to an impact, the protective portion 24 protects the prismatic panel 1 from direct impact.

[0046] As a preferred embodiment, a keel mounting plate 25 is vertically provided on the outermost side of the frame 2. The keel mounting plate 25 is used to connect to the keel frame on the ceiling to securely mount the panel light on the ceiling. In addition, the frame 2 of the present invention is an integrally formed structure, which is easy to process and helps companies control production costs.

[0047] In this embodiment, there are multiple heat-melt columns 22, and the multiple heat-melt columns 22 are evenly arranged on the frame 2. The outer shell 4 is a shell structure with an opening at one end, and the frame 2 is arranged at the edge of the opening of the outer shell 4. There are multiple fixing holes 41 and they are evenly arranged at the edge of the outer shell 4, and one fixing hole 41 is correspondingly connected to one heat-melt column 22. The present invention fixes the frame 2 at the edge of the outer shell 4, ensuring that there is a large enough installation space for installing the light-emitting element in the outer shell 4, which will not hinder the installation of the light-emitting element and the dispersion of light, and lays the foundation for large-area and uniform light emission. In this embodiment, the fixing hole 41 is a circular hole. In other embodiments not shown, the fixing hole 41 can also be an elliptical hole, a regular polygonal hole, or an irregular-shaped hole, etc., which is not limited here.

[0048] Please refer to FIG. 6 , as a preferred embodiment, heat-melting posts 22 are provided on the corners of the frame 2 and the shell 4 to ensure a tight connection between the frame 2 and the shell 4 and reduce the generation of gaps.

[0049] In a preferred embodiment, the frame 2 has a horizontal surface 26 facing away from the prismatic panel 1 and an inclined surface 27 connected to the outside of the horizontal surface 26. The heat-seal post 22 protrudes from the horizontal surface 26. The open side of the housing 4 has a horizontal plate 42 and an inclined plate 43 connected to the outside of the horizontal plate 42. Fixing holes 41 are provided in the horizontal plate 42. The horizontal plate 42 aligns with the horizontal surface 26, and the inclined plate 43 aligns with the inclined surface 27. This ensures a tight connection between the frame 2 and the housing 4, ensuring a reliable connection and minimizing the gap between the connecting surfaces, further preventing moisture, insects, dust, and the like from entering the panel light. Furthermore, during installation, the fit between the inclined surface 27 and the inclined plate 43, as well as the fit between the heat-seal post 22 and the fixing hole 41, facilitates assembly by positioning the two together. More importantly, the housing 4 is made of a non-transparent metal material. This ensures that light from the panel light is concentrated and emitted only from one side of the prismatic panel 1, which helps control the illumination direction of the panel light.

[0050] In a preferred embodiment, the housing 4 can be made of sheet iron, and a reflective layer can be provided on the inner wall of the housing 4 to focus light downward. The reflective layer can be a reflective film, such as aluminum foil, attached to the inner wall of the housing 4, or a reflective powder coated on the inner wall of the housing 4, without limitation. Compared to plastic housings, iron housings 4 offer greater structural strength and thermal conductivity, ensuring that heat is dissipated promptly during operation of the panel light. Furthermore, in other embodiments, the housing 4 can also be made of plastic.

[0051] Referring to FIG. 7 , with respect to the above-mentioned panel light, the present invention further provides a panel light processing method, comprising the following steps:

[0052] Step S1: First, the diffuser plate 3 is fixedly connected to the inner side of the frame 2, and then the prismatic panel 1 is welded to the frame 2. Specifically, in the first embodiment, the frame 2 is first positioned with the surface on which the prismatic panel 1 is mounted facing upward, and then the diffuser plate 3 is placed flat on the frame 2. Next, the prismatic panel 1 is laid flat on the frame 2, and the contact surfaces are fused and solidified, thereby welding the edge of the prismatic panel 1 to the frame 2.

[0053] Step S2: Flip the frame 2 so that the prism panel 1 faces downward, place the shell 4 on the frame 2, and pass the hot melt column 22 through the fixing hole 41. After the hot melt column 22 is hot-melted by hot riveting or ultrasonic riveting, a stop protrusion is formed (see Figure 8), which can fix the frame 2 on the shell 4.

[0054] Furthermore, hot riveting can be performed using hot press riveting equipment, and ultrasonic riveting can be performed using ultrasonic riveting equipment. The specific selection can be made according to the heating and softening method. Both methods are existing technologies and will not be described in detail here.

[0055] Example 2

[0056] Referring to Figure 9 , the main difference between the panel light of Example 2 of the present invention and that of Example 1 lies in that, in this embodiment, the thermal paste 22 corresponds to the ridge 28 . By omitting the portion of the frame 2 between the ridge 28 and the thermal paste 22 , the projection of the thermal paste 22 toward the prismatic panel 1 partially falls on the ridge 28 , while the remaining portion falls on the diffuser 3 . This increases the thickness of the portion of the frame 2 located near the prismatic panel 1 on the thermal paste 22 , thereby enhancing the structural strength of the frame 2 at the location of the thermal paste 22 and effectively preventing deformation of the frame 2 . Furthermore, although only a portion of the thermal paste 22 corresponds to the accommodating groove 21 , the color difference at the location of the thermal paste 22 is significantly reduced during user use, improving the visual experience to a certain extent.

[0057] Furthermore, a notch 29 is provided on the upper surface of the frame 2 on the inner side of the hot melt column 22. The provision of the notch 29 reduces the thickness of the portion of the frame 2 above the diffuser plate 3, thereby enhancing the light transmittance of the portion of the frame 2 corresponding to the diffuser plate 3, and further enhancing the brightness at the edge of the diffuser plate 3, compensating as much as possible for the defect of insufficient light transmittance at the edge connection portion, thereby reducing the brightness difference at different positions on the diffuser plate.

[0058] In addition, the keel mounting plate 25 can be omitted according to usage requirements. Other unmentioned components are the same as those in the first embodiment and are not limited here.

[0059] Example 3

[0060] Referring to Figure 10 , the difference between the third embodiment of the present invention and the first embodiment lies in that, in this embodiment, a fixed edge 30 is circumferentially protruded from the inner wall of the frame 2. The diffuser plate 3 is fused and solidified to the surface of the fixed edge 30 that is closest to the housing 4, and the prismatic panel 1 is fused and solidified to the surface of the fixed edge 30 that is farther from the diffuser plate 3. In this embodiment, the top wall of the accommodating groove 21 is flush with the lower surface of the fixed edge 30. That is, the accommodating groove 21 is formed below the fixed edge 30, and the prismatic panel 1 is fused and solidified within the accommodating groove 21.

[0061] In this embodiment, a fixing edge 30 is fixedly provided on the inner wall of the frame 2. During assembly, the diffuser plate 3 is fixedly mounted on the upper surface of the fixing edge 30, and the prismatic panel 1 is mounted on the lower surface of the fixing edge 30. The fixing edge 30 blocks the diffuser plate 3 and the prismatic panel 1 from contact and is independent of each other. This prevents the diffuser plate 3 and the prismatic panel 1 from being squeezed against each other, thus avoiding the risk of deformation or even rupture caused by interaction. Furthermore, the prismatic panel 1 and the diffuser plate 3 are all connected to the fixing edge 30 through a phase-melting solidification process, ensuring stable installation and sealing between the prismatic panel 1 and the diffuser plate 3, effectively preventing impurities from entering the space between the prismatic panel 1 and the diffuser plate 3.

[0062] As a preferred embodiment, the fixing edge 30 includes parallel upper and lower surfaces. The upper and lower surfaces of the fixing edge 30 are parallel to each other. The upper surface is aligned with and fixedly connected to the diffuser plate 3, while the lower surface is parallel to and fixedly connected to the prismatic panel 1. This increases the contact area and ensures connection stability. Furthermore, the thickness of the fixing edge 30 (i.e., the vertical distance between the upper and lower surfaces) is greater than the thickness of the diffuser plate 3 and greater than the thickness of the prismatic panel 1. The relatively thick fixing edge 30 enhances the structural strength of the frame 2 and provides a reliable guarantee for securing the diffuser plate 3 and the prismatic panel 1.

[0063] Example 4

[0064] Please refer to Figure 11. The difference between this fourth embodiment and the first embodiment is that a fixed edge 30 is formed on the inner wall of the frame 2 extending inward, and the diffuser 3 is fixed on the end face of the fixed edge 30 close to the prism panel 1. The prism panel 1 completely covers the lower surface of the frame 2 and is fixedly connected to the frame 2 by melting and solidifying.

[0065] In this embodiment, the prismatic panel 1 is a flat, uniformly thick, integrally formed structure. No protruding structures such as hooks are required during processing, ensuring the overall consistency of the prismatic panel 1. Furthermore, the prismatic panel 1 is attached to the frame 2 via a phase-melting solidification process, forming an inseparable unit. This seal effectively prevents moisture, dust, insects, and the like from entering the panel light. Furthermore, the frame 2 is made of transparent or translucent plastic, imparting a certain degree of light transmittance. Thus, when a light-emitting element (e.g., an LED light strip) mounted within the housing 4 is operating, light emitted by the element can pass through the frame 2 and be emitted downward. The prismatic panel 1 completely covers the lower end surface of the frame 2, providing an anti-glare effect on the light that passes through it. Combined with the diffuser 3 above the prismatic panel 1, the emitted light is more uniform, with a larger luminous area, a lower UGR value, and a softer, eye-friendly light. Furthermore, the brightness difference between the luminous areas of the frame 2 and the prismatic panel 1 is reduced, visually achieving a "full screen" lighting function. In the prior art, the prism panel is installed in a groove provided on the lower end surface of the frame. This will result in an obvious narrow gap between the prism panel and the lower surface of the frame, thereby affecting the appearance. In the present invention, the prism panel 1 completely covers the lower end surface of the frame 2, avoiding the generation of the narrow gap and providing a better appearance.

[0066] In addition, the fixed edge 30 on the inner wall of the frame 2 is used to limit the position of the diffuser plate 3 on the one hand, and on the other hand it can also improve the structural strength of the frame 2 itself, ensuring that even if the metal frame is replaced with a plastic frame, the frame 2 can still have good strength and a long service life.

[0067] In a preferred embodiment, the space below the fixed edge 30 forms a receiving groove 21. The diffuser plate 3 is a flat plate of uniform thickness. The diffuser plate 3 is positioned within the receiving groove 21 and is clamped between the prismatic panel 1 and the fixed edge 30. During assembly, the diffuser plate 3 is first placed within the receiving groove 21, and then the prismatic panel 1 is fused and solidified to connect to the frame 2. Once the prismatic panel 1 is in place, the diffuser plate 3 is clamped between the fixed edge 30 and the prismatic panel 1, securing the diffuser plate 3. This eliminates the need for additional fixing structures to secure the diffuser plate 3, facilitating processing and assembly, and reducing production costs.

[0068] Example 5

[0069] Referring to Figure 12 , the panel light provided in the fifth embodiment of the present invention differs from the fourth embodiment in that, in this embodiment, the diffuser plate 3 is fused and solidified to the end face of the fixed edge 30 facing away from the prismatic panel 1. During installation, the diffuser plate 3 is placed on the fixed edge 30 from one side of the housing 4 and then fixedly connected by fusion and solidification. In this embodiment, separating the diffuser plate 3 from the prismatic panel 1 prevents deformation or even rupture due to mutual compression between the two. It also enhances the stability of the connection between the diffuser plate 3 and the frame 2, effectively preventing movement of the diffuser plate 3. The fusion and solidification connection between the diffuser plate 3 and the fixed edge 30 is similar to that between the prismatic panel 1 and the frame 2 and will not be further described here.

[0070] For the above-mentioned fourth and fifth embodiments, in other implementations, the four edges of the prism panel 1 may not be flush with the four edges of the frame 2. For example, the side length of the frame 2 is greater than the side length of the prism panel 1. In this case, part of the frame 2 is exposed outside the prism panel 1.

[0071] With the above-described preferred embodiments of the present invention as inspiration, and with reference to the above description, relevant personnel may make various changes and modifications without departing from the scope of the present invention. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A panel light, characterized by: The invention comprises a prism panel, a frame, a diffuser plate and an outer shell, wherein the frame is annular and made of plastic, the prism panel and the outer shell are respectively arranged on opposite sides of the frame, the contact surfaces of the prism panel and the frame are melted and solidified, the diffuser plate is arranged on the inner side of the frame and is located between the prism panel and the outer shell, the diffuser plate and the prism panel are parallel to each other, a hot melt column is convexly provided on the surface of the frame close to the outer shell, a fixing hole is opened on the outer shell, the hot melt column passes through the fixing hole, and the hot melt column fixes the frame to the outer shell after hot melting, a receiving groove is provided on the surface of the frame close to the prism panel, the hot melt column corresponds to the receiving groove, the diffuser plate is arranged in the receiving groove and is squeezed and fixed between the frame and the prism panel.

2. The panel light according to claim 1, wherein: The frame has a ridge on its surface close to the prismatic panel, and a surface of the ridge away from the housing is fused and solidified with the prismatic panel. The space enclosed by the ridge forms a receiving groove for mounting the diffuser plate.

3. The panel light according to claim 2, wherein: A portion of the projection of the heat-melting column toward the prism panel falls on the ridge, and another portion falls on the diffusion plate. A notch is provided on the upper surface of the frame at the inner side of the heat-melting column.

4. The panel light according to claim 1, wherein: A fixed edge is circumferentially protruded on the inner wall of the frame, the diffuser plate is melt-solidified to the surface of the fixed edge close to the shell, and the prism panel is melt-solidified to the surface of the fixed edge away from the diffuser.

5. The panel light according to claim 1, wherein: The prismatic panel completely covers the lower end surface of the frame. A fixed edge is formed on the inner wall of the frame extending inward. The diffusion plate is fixed on the end surface of the fixed edge away from / close to the prismatic panel.

6. The panel light according to claim 1 or 5, characterized in that: The frame is made of transparent plastic or translucent plastic.

7. The panel light according to claim 1, wherein: The frame has a horizontal surface away from the prism panel and an inclined surface connected to the outside of the horizontal surface. The hot melt column is protruded from the horizontal surface. The open side of the shell has a horizontal plate and an inclined plate connected to the outside of the horizontal plate. The fixing hole is opened on the horizontal plate. The horizontal plate is in contact with the horizontal surface, and the inclined plate is in contact with the inclined surface.

8. The panel light according to claim 1, 4, 5 or 7, wherein: The shell is made of iron sheet.

9. A method for processing a panel light according to any one of claims 1 to 8, comprising the following steps: Step S1: Fixing the diffuser plate to the inner side of the frame, then placing the prismatic panel on the end face of the frame away from the outer shell, and melting and solidifying the contact surfaces of the two, thereby welding the edge of the prismatic panel to the frame; Step S2, flip the frame so that the prism panel faces downward, place the shell on the frame, and pass the hot melt column through the fixing hole. After the hot melt column is hot-melted, the hot melt column fixes the frame on the shell.

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