A lighting fixture

Abstract

A lighting fixture includes a frame assembled from several profiled edge strips and a back plate stamped from sheet metal. A light source plate is installed on the inner side of the back plate. The upper end face of each profiled edge strip has a connecting groove, and the inner end face of each profiled edge strip extends inward to form a base plate. The back plate extends downward to form a surrounding edge, the outer side of the surrounding edge extends outward to form a pressing ring, the outer side of the pressing ring extends upward to form a connecting part, and the connecting part extends outward to form a pressing edge, which covers the connecting groove. Several fixing screws pass through the pressing edge and are screwed into the connecting groove. The beneficial effects of this invention are: this invention uses a frame assembled from several profiled edge strips as the main frame of the lighting fixture. Compared to the large-area stamped and perforated sheet metal covers in the prior art, the profiled edge strips themselves have a stronger section modulus and greater bending and torsional resistance.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, specifically a lighting fixture. Background Technology

[0002] In existing lighting fixtures, a typical assembly consists of an interlocking faceplate and a backplate, both mostly made of sheet metal using a stamping process. To accommodate the light source (such as LED chips or LED panels), a large mounting cavity or opening is usually stamped out in the center of the faceplate. This design results in low material utilization; a large amount of sheet metal is removed during the stamping process, creating waste and increasing production costs.

[0003] Secondly, due to the removal of a large area of ​​mounting cavity material, the structural strength of the existing luminaire's cover is significantly reduced. During transportation, installation, and daily use, especially under external pressure or its own weight, the cover is prone to deformation, affecting its overall aesthetics and lifespan. For example, during installation, workers may inadvertently apply uneven force to the cover, causing it to bend and deform, thus affecting the installation accuracy of optical components and the lighting effect. Even under normal operating conditions, prolonged exposure to heat or gravity can cause slow deformation of the luminaire structure, resulting in gaps between the luminaire and the ceiling or mounting surface, affecting the product's sealing and visual appearance.

[0004] Furthermore, in existing technologies, the connection methods between the various components of the luminaire can be quite complex, leading to low assembly efficiency and inconvenient maintenance. Some connection methods may also fail to provide sufficient structural stability, further exacerbating the deformation problem of the luminaire under stress. Therefore, further improvements are necessary. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of existing technologies and provide a lighting fixture with a simple structure, low manufacturing cost, and the ability to improve material utilization, simplify production process, and effectively avoid deformation problems during use, while ensuring sufficient structural strength.

[0006] The purpose of this utility model is achieved in the following way: a lighting fixture, which includes a frame made of several profile strips spliced ​​together, and a back plate made of metal sheet stamped into shape, wherein a light source plate is installed on the inner side of the back plate;

[0007] The upper end face of the profile edge strip is provided with a connecting groove, and the inner end face of the profile edge strip extends inward to form a bottom plate;

[0008] The back plate extends downward to form a surrounding edge, the outer side of the surrounding edge extends outward to form a pressing ring, the outer side of the pressing ring extends upward to form a connecting part, the connecting part extends outward to form a pressing edge part, the pressing edge part covers the connecting groove, and several fixing screws pass through the pressing edge part and are screwed into the connecting groove.

[0009] Furthermore, a light-diffusing cover is clamped and installed between the pressure ring and the base plate.

[0010] Furthermore, the surrounding edge is a trapezoidal open shape that is wider at the top and narrower at the bottom.

[0011] Furthermore, the end face of the connecting groove is lower than the upper end face of the profile edge strip, and the connecting groove is provided with anti-slip teeth.

[0012] Furthermore: the inner side of the pressing ring is connected to the surrounding edge through an inner arc transition edge, and the outer side of the pressing ring is connected to the connecting part through an outer arc transition edge.

[0013] Furthermore, the back plate is stamped with several reinforcing ribs, and the light source plate is an LED light plate, which is installed on the inner bottom of the back plate.

[0014] The beneficial effects of this utility model are: 1. Simple structure, low manufacturing cost, and improved market competitiveness.

[0015] 2. This utility model uses a frame made of several profile edge strips as the main frame of the lamp. Compared with the metal sheet mask with large-area stamped openings in the prior art, the profile edge strips themselves have a stronger section modulus and stronger bending and torsional resistance.

[0016] 3. This frame, constructed from spliced ​​profiles, has significantly enhanced overall structural strength, effectively resisting external stress and the weight of the lamp's own components. This avoids the common problem of lampshade deformation during transportation, installation, and long-term use.

[0017] 4. This utility model uses profile edge strips spliced ​​together to form the frame. These profile edge strips can be extruded or cut from standard profiles according to design requirements, eliminating the need for large-area stamping and removal operations on large plates, thereby greatly reducing material waste. This production method significantly improves the utilization rate of raw materials, reduces the material cost of individual lamps, and thus achieves effective control of overall production costs.

[0018] 5. The design of clamping and fixing the light diffuser between the base plate and the pressure ring not only ensures a secure fixation but also simplifies the installation process of the light diffuser, while ensuring the flatness of the installed light diffuser and optimizing the lighting effect. Attached Figure Description

[0019] Figure 1, 2 This is a rendering of the overall assembly of the present utility model.

[0020] Figure 3 This is a cross-sectional view of the structure of this utility model.

[0021] Figure 4 This is an exploded view of the structure of this utility model.

[0022] Figure 5 This is a schematic diagram of the profile edge strip structure in this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1. Profile edge strip; 10. Screw; 11. Light diffuser; 12. Inner arc transition edge; 13. Outer arc transition edge; 14. Reinforcing rib; 2. Back plate; 3. Light source plate; 4. Connecting groove; 5. Base plate; 6. Surrounding part; 7. Pressure ring; 8. Connecting part; 9. Pressing edge part. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings. A lighting fixture includes a frame assembled from several profile strips 1, and a back plate 2 formed by stamping metal sheet. A light source plate 3 is installed on the inner side of the back plate 2. A connecting groove 4 is provided on the upper end face of the profile strips 1, and the inner end face of the profile strips 1 extends inward to form a bottom plate 5. The back plate 2 extends downward to form a surrounding edge 6, and the outer side of the surrounding edge 6 extends outward to form a pressing ring 7. The outer side of the pressing ring 7 extends upward to form a connecting part 8, and the connecting part 8 extends outward to form a pressing edge part 9. The pressing edge part 9 covers the connecting groove 4, and several fixing screws 10 pass through the pressing edge part 9 and are screwed into the connecting groove 4.

[0025] In this embodiment, the main structure of the lighting fixture is composed of a frame made of several profile strips 1 and a back plate 2 formed by stamping metal sheets. The profile strips 1 serve as the four-sided frame of the lighting fixture, providing basic structural support. The back plate 2 serves as the bottom surface of the lighting fixture, supporting and mounting the light source plate 3. The light source plate 3 is installed inside the back plate 2 and is the core of the lighting fixture.

[0026] Among them, the upper end face of the profile edge strip 1 is provided with a connecting groove 4, which is a key structure for connecting with the back plate 2. The inner end face extends inward to form a base plate 5, which provides a support surface for subsequent installation of internal optical components such as diffusers.

[0027] The back panel 2 is connected to the frame through a series of stamped structures. First, it extends downward to form a surrounding edge 6, providing a certain height and structural stability. Then, the outer edge 6 extends outward to form a pressure ring 7, which protrudes outward and serves as a pressure-bearing surface for fixing components such as the light-diffusing mask. Next, the outer edge of the pressure ring 7 extends upward to form a connecting part 8, which extends upward to fit with the profile edge strip 1. The connecting part 8 extends outward to form a pressing edge 9, which is the part that finally connects to the profile edge strip 1 and is designed to cover the connecting groove 4 of the profile edge strip 1.

[0028] During final assembly and connection: After the pressing edge 9 covers the connecting groove 4, "several fixing screws 10 pass through the pressing edge 9 and are screwed into the connecting groove 4" to achieve a tight and firm connection between the back plate 2 and the frame of the profile edge strip 1. The screws 10 provide mechanical fixing force, integrating the two into one unit.

[0029] In one embodiment, the light-diffusing mask 11 is clamped and fixed between the pressure ring 7 and the base plate 5. Through this upper and lower cooperation, the light-diffusing mask 11 is precisely clamped and fixed between the base plate 5 and the pressure ring 7, ensuring its stable position and preventing it from shaking or falling off.

[0030] In one embodiment, the perimeter portion 6 is a trapezoidal opening that is wider at the top and narrower at the bottom. Therefore, the perimeter portion 6 formed by the downward extension of the back plate 2 is no longer a simple vertical wall, but is stamped into a trapezoidal opening that is wider at the top and narrower at the bottom. This shape of perimeter portion is wider at the connection with the back plate body and gradually narrows downwards, forming an outwardly open sloping structure. Compared to a straight-wall structure, the trapezoidal structure has better resistance to compression and deformation in the vertical direction, further enhancing the structural stability of the back plate edge. In addition, stamping the trapezoidal opening structure is relatively easy and facilitates the smooth transition forming of subsequent structures such as the pressure ring.

[0031] In one embodiment, the end face of the connecting groove 4 is lower than the upper end face of the profile edge strip 1, and the connecting groove 4 is provided with anti-slip teeth. When the pressing edge 9 of the back plate 2 covers the connecting groove 4 and is screwed on, since the end face of the connecting groove 4 is lower than the upper end face of the profile edge strip 1, the pressing edge 9 can be completely embedded in or flush with the top surface of the profile edge strip 1, so that the top surface of the entire lamp remains flat. When the screw 10 passes through the pressing edge 9 and is screwed on the connecting groove 4, the anti-slip teeth inside the connecting groove 4 form a tighter engagement with the screw, increasing the friction of the threaded connection. The anti-slip teeth can effectively prevent the screw from loosening due to vibration or long-term use, greatly enhancing the stability and reliability of the threaded connection, and avoiding structural deformation or safety hazards caused by loose connection.

[0032] In one embodiment: the inner side of the pressing ring 7 is connected to the surrounding edge 6 by an inner arc transition edge 12, and the outer side of the pressing ring 7 is connected to the connecting part 8 by an outer arc transition edge 13.

[0033] In this embodiment, during the stamping process of the back plate 2, the transition from the edge portion 6 to the pressure ring 7, and from the pressure ring 7 to the connecting portion 8, is no longer an acute angle or right angle connection, but rather a smooth transition via an inner arc transition edge 12 and an outer arc transition edge 13, respectively. This arc transition edge effectively avoids stress concentration at acute angle structures, thereby improving the overall strength and fatigue resistance of the back plate structure and extending its service life. Simultaneously, the arc transition makes the internal structure of the lamp more gentle, eliminating sharpness and enhancing the aesthetic appeal of the product's industrial design.

[0034] In one embodiment, the back plate 2 is stamped with a plurality of reinforcing ribs 14, and the light source plate 3 is an LED light plate, which is installed on the inner bottom of the back plate 2. The presence of the reinforcing ribs 14 significantly improves the planar rigidity and deformation resistance of the back plate 2, and can maintain good flatness even if the back plate material is thin, avoiding warping caused by stress or thermal expansion and contraction.

[0035] In summary, this utility model provides a lighting fixture with innovative structure and optimized function. Its core working principle lies in the ingenious combination and synergistic operation of a modular frame and a functional back panel.

[0036] First, the external frame of the lamp is a frame made of high-strength profile strips 1, which provides strong support and resistance to deformation for the overall structure, solving the problem of insufficient strength of traditional thin plate covers.

[0037] Secondly, the back panel 2, formed by stamping metal sheet, is the core of the lamp's function, with a high-efficiency, long-life LED light source board 3 installed on its inner side. The back panel 2 itself achieves seamless connection with the frame through a series of ingenious multi-layered extension structures, including a downwardly extending perimeter 6, an outwardly extending pressure ring 7, an upwardly extending connecting part 8, and the outermost pressing edge 9.

[0038] During assembly, the pressing edge 9 of the back plate 2 precisely covers the connecting groove 4 on the upper end face of the profile edge strip 1, which is lower than its plane, and is mechanically connected by fixing screws 10 with anti-slip teeth. This connection method not only makes the top of the lamp look flat and beautiful, but more importantly, the introduction of anti-slip teeth greatly enhances the reliability of the connection, effectively prevents the screws from loosening, and ensures the structural stability of the lamp during long-term use.

[0039] Inside the lamp, the base plate 5 formed by the inward extension of the profile edge strip 1 and the pressure ring 7 extending from the back plate 2 work together to firmly clamp and fix the light dome 11 between them, ensuring the stability of the light dome and the uniform lighting effect.

[0040] Furthermore, the perimeter 6 of the back plate 2 adopts a trapezoidal open design that is larger at the top and smaller at the bottom, further enhancing the structural rigidity. The internal structure of the back plate 2, such as the inner arc transition edge 12 and outer arc transition edge 13 between the pressure ring and the perimeter, and between the pressure ring and the connecting part, effectively eliminates stress concentration and improves the fatigue strength and stamping quality of the component.

[0041] Finally, the several reinforcing ribs 14 stamped on the back plate 2 not only significantly improve the planar rigidity of the back plate and prevent its deformation, but more importantly, they increase the heat dissipation surface area of ​​the back plate. Together with the tight installation of the LED light source board 3, they form an efficient heat dissipation path, ensuring that the LED light source operates at the optimal operating temperature, thereby extending the service life and reliability of the lamp.

[0042] In summary, this utility model fundamentally solves many problems existing in the material utilization, structural strength and long-term reliability of current lighting fixtures by optimizing the frame structure, innovating the integrated back panel connection design, reliable component fixing method and efficient heat dissipation and structural reinforcement measures, and provides a new type of lighting fixture that is high-performance, highly reliable, easy to manufacture and aesthetically pleasing.

[0043] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A lighting fixture, characterized in that: It includes a frame made of several profile strips (1) spliced ​​together, and a back plate (2) formed by stamping metal sheet, wherein a light source plate (3) is installed on the inner side of the back plate (2). The upper end face of the profile edge strip (1) is provided with a connecting groove (4), and the inner end face of the profile edge strip (1) extends inward to form a bottom plate (5). The back plate (2) extends downward to form a perimeter (6), and the perimeter (6) extends outward to form a pressing ring (7). The pressing ring (7) extends upward to form a connecting part (8), and the connecting part (8) extends outward to form a pressing edge part (9). The pressing edge part (9) covers the connecting groove (4), and several fixing screws (10) pass through the pressing edge part (9) and are screwed into the connecting groove (4).

2. A lighting fixture according to claim 1, characterized in that: A light-diffusing cover (11) is clamped and fixed between the pressure ring (7) and the base plate (5).

3. A lighting fixture according to claim 1, characterized in that: The surrounding part (6) is a trapezoidal open shape that is larger at the top and smaller at the bottom.

4. A lighting fixture according to claim 1, characterized in that: The end face of the connecting groove (4) is lower than the upper end face of the profile edge strip (1), and the connecting groove (4) is provided with anti-slip teeth.

5. A lighting fixture according to claim 1, characterized in that: The inner side of the pressure ring (7) is connected to the surrounding edge (6) by an inner arc transition edge (12), and the outer side of the pressure ring (7) is connected to the connecting part (8) by an outer arc transition edge (13).

6. A lighting fixture according to claim 1, characterized in that: The back plate (2) is stamped with several reinforcing ribs (14), and the light source plate (3) is an LED light plate, which is installed on the inner bottom of the back plate (2).

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