A bezel-less panel light

Abstract

The utility model discloses to the problem of the existing frameless panel lamp hidden frame residual, assembly maintenance inconvenience, low -efficiency heat dissipation, unstable structure, discloses a novel frameless panel lamp. The existing hidden frame formula and the splicing formula of sticking, all have the defect such as the appearance shortage, the dismounting is complicated, the poor heat dissipation, the easy loosening dust accumulation. The panel lamp is composed of the aluminum profile frame edge, double connection code and so on spare and has no exposed frame integration structure, and 4mm thick light diffusion board concave type groove clamping frame edge realizes no edge effect, and the light guide plate adopts PS / PMMA material, and the surface is equipped with microstructure net point. The heat is conducted to 0.4mm iron heat dissipation backplate through the aluminum profile frame edge, and 2mm reserved gap optimizes luminous uniformity, and double connection code strengthens the stability. The whole can be disassembled and assembled, and has dustproof and shockproof functions, and is suitable for multiple scene indoor illumination.

Description

Technical Field

[0001] This utility model belongs to the field of indoor lighting fixture technology, specifically referring to a frameless LED panel light, and its core involves the improvement of the lighting fixture's frame structure, component connection method, and heat dissipation system. Background Technology

[0002] As interior decoration demands increasing aesthetics and spatial integration, frameless panel lights, with their outstanding advantages of visual transparency and strong environmental adaptability, have been widely used in various scenarios such as home decoration, office layout, and commercial display spaces, becoming one of the mainstream lighting types in the current indoor lighting field.

[0003] The core structure of a frameless panel light typically consists of a light-transmitting panel, a light-emitting component, a lamp frame, and a driver. Existing technologies for frameless design optimization focus on reducing the frame size or hiding the frame structure to weaken its visual presence. Currently, the mainstream technical solutions fall into two main categories. One is the hidden frame solution, which embeds the frame structure into a mounting groove or uses a frame material the same color as the ceiling to visually minimize its presence. Its light-emitting component often uses a combination of LED light strips and a light guide plate. The light strip is positioned around the edge of the light guide plate, and a simple heat sink is provided on the back of the lamp body. The panel is initially fixed to the frame with clips, and then the frame is locked to the mounting surface with screws. For example, Chinese utility model patent CN215675498U discloses an embedded frameless panel light, which is fixed to the ceiling joists through a mounting frame, with the panel edge overlapping the inner step of the mounting frame for positioning. Another type is the frameless splicing solution. This solution eliminates the traditional rigid frame and uses adhesive to directly attach the light-transmitting panel to the back panel of the lamp body. The light-emitting components are fixed in the mounting groove of the back panel, and the driving power supply is integrated into the receiving cavity on one side of the back panel. For example, the patent with publication number CN214406935U uses a silicone layer to bond the panel and the back panel, and sets heat dissipation holes on the back panel to achieve basic heat dissipation, thereby achieving a frameless appearance effect.

[0004] However, the aforementioned existing technical solutions still have many shortcomings that urgently need to be addressed. In terms of aesthetics, the hidden frame design essentially retains the frame structure, and the frame outline remains clearly visible from certain viewing angles, failing to achieve a truly borderless visual experience. Furthermore, the adhesive-based design is prone to adhesive aging after long-term use, causing the panel edges to peel up, severely affecting the neatness of the lamp's appearance. Regarding assembly and maintenance, the hidden frame design requires multiple alignments of clips and screw holes, making the assembly process cumbersome and time-consuming. For the adhesive-based design, forcibly separating the panel from the back panel during disassembly can easily cause panel cracking and damage to the light guide plate, significantly increasing maintenance costs. In terms of heat dissipation, existing solutions mostly use a single heat sink or simple ventilation holes, resulting in a long heat transfer path. The heat generated by the LED strip tends to accumulate at the edges of the light guide plate, causing the edge temperature to be higher than the central area. This not only accelerates the aging of the LED chips but may also cause thermal deformation of the light guide plate, affecting light uniformity. In terms of structural stability, snap-fit ​​connections are prone to elastic fatigue after long-term use, causing the panel to loosen; adhesive connections are significantly affected by temperature changes, and the bonding strength will decrease significantly in high-temperature environments, posing a risk of panel detachment. At the same time, gaps can easily allow dust to enter the lamp body and adhere to the surface of the light guide plate, affecting the light emission effect.

[0005] These problems severely restrict the user experience and lifespan of frameless panel lights. Therefore, developing a frameless panel light that excels in appearance, assembly, heat dissipation, and stability is of great practical significance. Utility Model Content

[0006] The technical problem to be solved by this application is to provide a frameless panel light that achieves the effects of no exposed frame, convenient assembly, efficient heat dissipation and stable structure.

[0007] The technical solution of this utility model is: a frameless panel light, including an aluminum profile frame, double connecting brackets, LED light strips, a light diffusion plate, a light guide plate assembly, a heat dissipation back plate, a driving power supply, and dustproof seals. The components work together to form an integrated structure without exposed frame. The light diffusion plate has a concave groove around its perimeter, and the aluminum profile frame is adapted to fit into the concave groove. The LED light strip is fixed in the light groove of the aluminum profile frame, the light guide plate assembly is disposed on the inner side of the aluminum profile frame, the heat dissipation back plate covers the back of the light body, and the double connecting brackets are installed at the corners of the aluminum profile frame for fixing the spliced ​​aluminum profile frame.

[0008] The thickness of the light diffusion plate is 4mm.

[0009] The light guide plate assembly is made of PS or PMMA material, and the surface of the light guide plate assembly is provided with microstructure dots.

[0010] The heat dissipation backplate is a 0.4mm thick iron backplate, the drive power supply is fixed on the heat dissipation backplate, and the four corners of the heat dissipation backplate are provided with through mounting holes.

[0011] A 2mm gap is reserved between the light diffusion plate and the light guide plate assembly.

[0012] The double connecting brackets are made of stainless steel, and two double connecting brackets are configured at the corner of each aluminum profile frame. The double connecting brackets are provided with threaded holes for locking and fixing.

[0013] The length of the LED light strip is customized according to the perimeter of the aluminum profile frame, and the back of the LED light strip is provided with an adhesive layer for pasting and fixing.

[0014] An EVA buffer pad is provided between the light guide plate assembly and the heat dissipation back plate. The EVA buffer pad is used to fill the gap and play a role in shockproof and dustproof.

[0015] The heat dissipation backplate has reserved holes at the positions corresponding to the LED light strip wires, and the LED light strip wires pass through the reserved holes to connect with the driving power supply.

[0016] The aluminum profile frame is shaped like a quadrilateral, pentagon, hexagon, or ellipse.

[0017] This frameless panel light, through structural innovation, connection optimization, and improved heat dissipation design, addresses many shortcomings of existing technologies, achieving significant and comprehensive technical benefits, as detailed below: 1. Achieve a truly borderless visual effect and enhance decorative adaptability: By milling concave grooves around the 4mm thick light diffuser plate, the aluminum profile frame edge is precisely fitted into the groove and completely invisible from the front, completely abandoning the traditional hidden narrow frame structure and achieving a truly full-width borderless visual experience. The visual transparency of the lamp is greatly improved, seamlessly adapting to different decorative styles in home, office, and commercial displays, effectively ensuring the unity of the decorative style and overall aesthetics of the installation environment.

[0018] 2. Simplified assembly process and reduced maintenance costs: The aluminum profile frame is secured with double connecting brackets, along with detachable component connections, replacing the traditional cumbersome methods of snap-fit ​​alignment, multiple screw tightening, and adhesive fixing. No complex alignment operations are required during assembly, and no forced separation of components is needed during disassembly. This not only shortens assembly time but also avoids problems such as panel cracking and light guide plate damage during maintenance, reducing component wear and significantly improving maintenance efficiency and lowering maintenance costs.

[0019] 3. Optimized heat dissipation performance and extended lamp life: A highly efficient heat dissipation path is constructed, consisting of "LED light strip - aluminum profile frame - heat dissipation backplate". The high thermal conductivity of aluminum alloy can quickly conduct the heat generated by the LED light strip, and then the heat is quickly dissipated through the 0.4mm thick iron heat dissipation backplate. At the same time, the heat from the driver power supply can also be dissipated through the heat dissipation backplate. This design effectively solves the problem of heat accumulation, delays the light decay of LED beads, and avoids the light guide plate from deforming due to high temperature. This not only extends the life of the lamp but also ensures the stability of luminous performance during long-term use.

[0020] 4. Enhanced structural stability with dust and shock protection: The double-connecting bracket design at the corners of the aluminum profile frame significantly improves the overall rigidity and stability of the lamp frame, preventing panel wobbling and noise caused by loose connections during transportation or long-term use. Simultaneously, the tight fit between the light diffuser plate and the aluminum profile frame, combined with the EVA cushioning pad and dustproof seals, completely seals the internal gaps of the lamp. This not only prevents dust from entering and adhering to the light guide plate surface but also provides excellent shock protection, maintaining the lamp's long-term cleanliness and stable lighting effect.

[0021] 5. Improved light emission uniformity and enhanced lighting experience: The light guide plate is made of PS / PMMA material with microstructured dots on the surface. Combined with the reasonable layout of LED light strips, and with a 2mm gap reserved between the light diffusion plate and the light guide plate assembly, it effectively solves the problem of uneven light emission caused by traditional single-sided light strips, where the edges are bright and the center is dark. This achieves uniform brightness across the entire luminaire, significantly improving the comfort and aesthetics of lighting. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the first embodiment of the frameless panel light of this application.

[0023] Figure 2 This is a schematic diagram of a second embodiment of the frameless panel light of this application.

[0024] Figure 3 This is a schematic diagram of the third embodiment of the frameless panel light of this application.

[0025] Figure 4 This is a schematic diagram of the fourth embodiment of the frameless panel light of this application. Detailed Implementation

[0026] The following is combined Figures 1-4 This invention provides a more detailed description of the technical solution of a frameless panel light. This embodiment is only used to illustrate the technical solution and is not intended to limit the scope of protection of this invention.

[0027] The core of this frameless panel light is the coordinated use of an aluminum profile frame and double connecting brackets, combined with customized optical components and a heat dissipation structure, to achieve a frameless, easy-to-assemble, highly efficient heat dissipation, and structurally stable performance. Specific implementation details are as follows: I. Component Preparation and Selection 1. Aluminum profile frame 10: Made of lightweight, high-strength aluminum alloy extrusion molding, with a pre-reserved light groove on the inner side to accommodate LED light strips. The width of the light groove is determined according to the thickness of the selected LED light strip, generally set to 5-8mm. The corners of the frame are machined with slots that are compatible with the double connecting brackets to ensure that the connecting brackets can be tightly embedded and fixed.

[0028] 2. Double connecting bracket 20: Made of stainless steel in one piece by stamping, it has good rigidity and corrosion resistance. Two connecting brackets are configured at each corner. The brackets are provided with threaded holes and are locked to the aluminum profile frame edge by screws to achieve seamless splicing of the frame edge.

[0029] 3. LED light strip: The length is customized according to the perimeter of the aluminum profile frame. The LED beads adopt SMD packaging type, and the spacing between the LED beads is uniformly set to 10-15mm. The back of the light strip comes with 3M adhesive for easy pasting and fixing. The length of the light strip wire is reserved at 20-30mm to meet the requirements of the driver power supply.

[0030] 4. Light Diffuser Plate: A 4mm thick PC material light diffuser plate with a light transmittance of ≥85% is selected. A concave groove is machined around its perimeter using a CNC milling machine. The depth and width of the concave groove are perfectly matched with the front thickness of the aluminum profile frame, ensuring that the aluminum profile frame can be accurately inserted into the groove, and that there are no exposed edges on the front of the diffuser plate after it is engaged.

[0031] 5. Light guide plate assembly: The light guide plate is made of high light transmittance PMMA material with a thickness of 3mm. The surface is laser-engraved with micro-structure dots. The dot density is gradient from the edge to the center, with high dot density at the edge and low density at the center, thus offsetting the defect of traditional lamps where the edges are bright and the center is dark. A reflective film is attached to the outside of the light guide plate and is attached to the back of the light guide plate to improve light utilization.

[0032] 6. Heat dissipation backplate and other components: The heat dissipation backplate is made of 0.4mm thick cold-rolled iron plate with anti-rust paint treatment. The backplate has a reserved mounting position corresponding to the position of the driver power supply, and the four corners are opened with through mounting holes with a diameter of 6mm for fixing the lamp to the mounting surface; at the same time, a driver power supply with appropriate power, EVA buffer pad and dustproof seal are prepared. The EVA buffer pad is 1mm thick and is used to fill the gap between the light guide plate assembly and the heat dissipation backplate.

[0033] II. Assembly Process 1. LED strip fixing: First, solder the LED strip wires, peel off the 3M adhesive protective film on the back of the strip, and stick it tightly to the light groove on the side of the aluminum profile frame, ensuring that the strip fits the inner wall of the light groove without any lifting. Then, arrange the strip wires to the reserved wire hole position on the side of the frame to avoid wire tangling.

[0034] 2. Light Diffuser Plate Installation: Gently peel off the protective film on the back of the light diffuser plate, leaving the protective film on the front intact. Slowly align the edge of the aluminum profile frame with the concave groove around the light diffuser plate and insert it smoothly, ensuring that the frame edge and the groove are completely fitted without any looseness or gaps. Next, insert the double connecting brackets into the corner slots of the aluminum profile frame and tighten them with Phillips head screws through the threaded holes of the brackets, so that the entire frame edge forms a stable rectangular frame.

[0035] 3. Placement of light guide plate assembly: Remove the protective film on the front of the light guide plate. Operators should wear dust-free gloves to avoid touching the surface of the light guide plate with their fingers, which may cause dirt or scratches. Place the light guide plate assembly with reflective film smoothly into the inner side of the aluminum profile frame, so that the edge of the light guide plate is precisely aligned with the LED light strip to ensure that the light can enter the light guide plate evenly.

[0036] 4. Backplate Assembly and Inspection: Place an EVA buffer pad between the light guide plate assembly and the heat dissipation backplate. The buffer pad must completely cover the edge of the back of the light guide plate to provide shock and dust protection. Then, cover the backplate with the heat dissipation backplate and pass the LED strip wires through the reserved holes in the backplate to connect to the corresponding interface of the driver power supply, ensuring that the wiring is secure and the positive and negative terminals are not reversed. Connect the power supply for lighting test. After confirming that the lamp emits light evenly across the entire surface without dark areas or flickering, use screws to lock and fix the heat dissipation backplate to the aluminum profile frame around the perimeter. Finally, remove the protective film on the front of the light diffusion plate.

[0037] III. Beneficial Technical Effects 1. Heat dissipation implementation: The heat generated by the LED light strip during operation is directly conducted to the aluminum profile frame edge that is tightly attached to it. The high thermal conductivity of the aluminum alloy material allows the heat to spread quickly throughout the frame. Then, through the tight connection between the frame edge and the heat dissipation backplate, the heat is conducted to the heat dissipation backplate. The heat generated by the driver power supply is also transferred to the heat dissipation backplate through the mounting surface. Finally, the heat is quickly dissipated to the external environment by the heat dissipation backplate, achieving efficient heat dissipation of the whole machine.

[0038] 2. Optimization of light emission: The microstructure dots distributed in a gradient on the surface of the light guide plate are used to uniformly refract and diffuse the light emitted by the LED strip. At the same time, the structural design of the aluminum profile frame creates a fixed gap of 2mm between the light diffusion plate and the light guide plate assembly. This gap provides sufficient space for the propagation of light and avoids light refraction disorder, ultimately achieving a consistent light emission effect across the entire surface.

[0039] 3. Stability and Dustproof Implementation: The double connecting brackets at each corner of the frame form a double fixation, effectively avoiding the problem of loosening caused by a single connecting structure, improving the overall impact resistance and stability of the lamp, and adapting to transportation and long-term use requirements; at the same time, the tight fit between the light diffusion plate and the aluminum profile frame, the filling of the EVA buffer pad, and the dustproof sealant seal all gaps inside the lamp, effectively preventing dust from entering, maintaining the cleanliness of the lamp's interior, and ensuring stable long-term lighting performance.

Claims

1. A frameless panel light, characterized in that, The device includes an aluminum profile frame, dual connecting brackets, LED light strips, a light diffusion plate, a light guide plate assembly, a heat dissipation backplate, a driver power supply, and dustproof seals. These components work together to form an integrated structure without exposed frames. The light diffusion plate has a concave groove around its perimeter, and the aluminum profile frame is fitted into the concave groove. The LED light strip is fixed in the light groove of the aluminum profile frame, the light guide plate assembly is located inside the aluminum profile frame, the heat dissipation backplate covers the back of the lamp body, and the dual connecting brackets are installed at the corners of the aluminum profile frame to fix and splice the aluminum profile frame.

2. A frameless panel light according to claim 1, characterized in that, The thickness of the light diffusion plate is 4mm.

3. A frameless panel light according to claim 1, characterized in that, The light guide plate assembly is made of PS or PMMA material, and the surface of the light guide plate assembly is provided with microstructure dots.

4. A frameless panel light according to claim 1, characterized in that, The heat dissipation backplate is a 0.4mm thick iron backplate, the drive power supply is fixed on the heat dissipation backplate, and the four corners of the heat dissipation backplate are provided with through mounting holes.

5. A frameless panel light according to claim 1, characterized in that, A 2mm gap is reserved between the light diffusion plate and the light guide plate assembly.

6. A frameless panel light according to claim 1, characterized in that, The double connecting brackets are made of stainless steel, and two double connecting brackets are configured at the corner of each aluminum profile frame. The double connecting brackets are provided with threaded holes for locking and fixing.

7. A frameless panel light according to claim 1, characterized in that, The length of the LED light strip is customized according to the perimeter of the aluminum profile frame, and the back of the LED light strip is provided with an adhesive layer for pasting and fixing.

8. A frameless panel light according to claim 1, characterized in that, An EVA buffer pad is provided between the light guide plate assembly and the heat dissipation back plate. The EVA buffer pad is used to fill the gap and play a role in shockproof and dustproof.

9. A frameless panel light according to claim 1, characterized in that, The heat dissipation backplate has reserved holes at the positions corresponding to the LED light strip wires, and the LED light strip wires pass through the reserved holes to connect with the driving power supply.

10. A frameless panel light according to any one of claims 1 to 9, characterized in that, The aluminum profile frame is shaped like a quadrilateral, pentagon, hexagon, or ellipse.

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