Lamp chassis and panel lamp

Abstract

The embodiment of the utility model provides a lamp base plate and a panel light, and the lamp base plate comprises a bottom plate used for installing a light bar; the frame is arranged along the periphery of the bottom plate in a surrounding mode, an included angle is formed between the plane where the frame is located and the plane where the bottom plate is located, and the frame and the bottom plate jointly define a lamp cavity; the reflection increasing coating is arranged on the cavity wall of the lamp cavity, and the reflection increasing coating is used for increasing the reflectivity of the base plate; wherein the reflection increasing coating comprises a titanium dioxide containing coating. According to the lamp base plate and the panel lamp provided by the embodiment of the invention, the titanium dioxide-containing coating is adopted as the reflection increasing coating, so that the reflectivity of the base plate can be effectively improved, the defects of adding reflection paper and a film-coated base plate are effectively avoided, and the obtained lamp base plate is high in reflectivity, simple in process, not prone to falling off of the coating and high in reliability.

Description

Technical Field

[0001] This application belongs to the field of lighting technology, and in particular relates to a lighting chassis and panel light. Background Technology

[0002] With increasing market demand for high-brightness, high-efficiency direct-lit panel lights, the requirements for chassis reflectivity are also rising. As one of the most crucial optical / structural components of direct-lit panel lights, the chassis currently exhibits a reflectivity of only 90%–93%, which is insufficient to meet the current lighting parameter requirements for high-brightness, high-efficiency overall lights. Common methods to improve chassis reflectivity include adding reflective paper inside the chassis, or using a lamination method where reflective paper is directly glued to a metal sheet before stamping to form the chassis.

[0003] However, the above methods have the following drawbacks: adding reflective paper increases material costs and the assembly process is complex and inefficient; the coating method has low reliability, the coating layer is easy to fall off, and the strength is insufficient. Under the same stress conditions, compared with the painted chassis, the coating layer is more easily punctured and scratched, eventually leading to chassis rust and coating layer falling off.

[0004] In summary, the current chassis still suffer from complex assembly processes and low reliability. Utility Model Content

[0005] In view of this, the present application provides a lighting chassis and panel light to solve the technical problems of complex assembly process and low reliability of existing chassis.

[0006] In a first aspect, embodiments of this application provide a lamp chassis, including:

[0007] Base plate;

[0008] A frame is provided around the four sides of the base plate, and the plane of the frame forms an angle with the plane of the base plate. The frame and the base plate together enclose a lamp cavity, which is used to install a light strip; and

[0009] An anti-reflective coating is applied to the cavity wall of the lamp cavity, and the anti-reflective coating is used to enhance the reflectivity of the chassis;

[0010] The anti-reflective coating includes a titanium dioxide-containing coating.

[0011] In some embodiments, the anti-reflective coating is disposed on the side of the base plate near the lamp cavity, and the anti-reflective coating is disposed on the side of the frame near the lamp cavity.

[0012] In some embodiments, the anti-reflective coating is disposed on the side of the frame near the lamp cavity.

[0013] In some embodiments, the anti-reflective coating is disposed on the side of the base plate near the lamp cavity.

[0014] In some embodiments, the plane containing the frame and the plane containing the base plate form an angle α on the side outside the lamp cavity.

[0015] The value of α ranges from 80° to 90°.

[0016] In some embodiments, the plane containing the frame and the plane containing the base plate form an angle α on the side outside the lamp cavity.

[0017] The value of α ranges from 50° to 65°.

[0018] In some embodiments, the base plate has a groove on the side facing the lamp cavity, the groove being distributed laterally, longitudinally, and obliquely, and the groove is used to install a lamp strip.

[0019] In some embodiments, the lamp base is a painted base, and the paint surface of the painted base is the anti-reflective coating.

[0020] Secondly, embodiments of this application provide a panel light, including:

[0021] The lighting chassis described in the first aspect;

[0022] The light strip is located on one side of the base plate in the lamp cavity.

[0023] In some embodiments, the light strips are arranged in a staggered pattern, both horizontally and vertically.

[0024] Alternatively, the light strips may be arranged in an oblique, staggered pattern.

[0025] In some embodiments, the light strips are provided in multiple groups, and the spacing between two adjacent groups of light strips arranged in the same direction is 85mm to 100mm.

[0026] In some embodiments, the spacing between two adjacent LED beads on the LED strip is 50mm to 55mm.

[0027] The lamp chassis and panel lamp provided in this application embodiment can effectively improve the reflectivity of the chassis by using a titanium dioxide-containing coating as an anti-reflective coating; the reflectivity can be achieved at the same level without adding reflective paper or using a film; it avoids the high cost of adding reflective paper and the undesirable phenomenon of yellowing and wrinkling of reflective paper; the strength is higher than that of film, it is resistant to high temperature and humidity, is not prone to yellowing, and there is no peeling of the reflective layer within the same lifespan. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a three-dimensional structural diagram of the lamp chassis provided in the embodiments of this application;

[0030] Figure 2 This is a side view of the lighting chassis provided in an embodiment of this application;

[0031] Figure 3 This is a schematic diagram of the structure of the lamp chassis provided in the first embodiment of this application;

[0032] Figure 4 This is a schematic diagram of the structure of the lamp chassis provided in the second embodiment of this application;

[0033] Figure 5 This is a schematic diagram of the structure of the lamp chassis provided in the third embodiment of this application;

[0034] Figure 6 This is a schematic diagram of the structure of the lamp chassis provided in the fourth embodiment of this application;

[0035] Figure 7 This is a schematic diagram of the structure of the panel light provided in the embodiment of this application;

[0036] Figure 8 This is an exploded view of the panel light provided in the embodiment of this application.

[0037] The attached icon numbers are as follows:

[0038] 10. Base plate; 100. Lamp cavity; 101. Groove;

[0039] 20. Border;

[0040] 30. LED strip; 300. LED bulb;

[0041] 40. Diffuser plate;

[0042] 50. Outer frame. Detailed Implementation

[0043] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that the embodiments of this application can also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the embodiments of this application with unnecessary detail.

[0044] It should also be understood that the term "and / or" as used in the specification of embodiments of this application and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0045] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0046] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element 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 the embodiments of this application.

[0047] Furthermore, in the description of the embodiments and the appended claims of this application, the terms "first," "second," "third," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0048] In the description of embodiments in this application, references to "some embodiments" or "some embodiments" mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in some embodiments," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiments, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized. "A plurality" refers to two or more.

[0049] The chassis (also known as the backplate) is one of the most important optical / structural components in panel lights. Currently, the reflectivity of chassis is generally between 90% and 93%, which is no longer sufficient to meet the requirements of high luminous flux and high luminous efficacy for current overall lighting parameters. Common methods for improving chassis reflectivity include:

[0050] 1. Add reflective paper inside the chassis to improve reflectivity. The reflective paper is made of polyethylene terephthalate or polypropylene.

[0051] 2. By coating the chassis with a film, the reflective paper is directly glued to the metal sheet and then stamped into shape.

[0052] The above methods have the following drawbacks:

[0053] The disadvantages of adding reflective paper inside the chassis include:

[0054] 1. It greatly increases material costs, as reflective paper requires punching, pre-folding, and adhesive backing.

[0055] 2. Furthermore, the assembly process is complex and inefficient. Generally, the number of holes punched in the reflective paper corresponds to the number of LED beads to maximize the internal reflectivity. Therefore, the reflective paper needs to be aligned with each LED bead, reducing assembly efficiency and making automation difficult.

[0056] 3. Reduced reliability of the entire lamp: The reflective paper is usually fixed by silicone glue, 3M adhesive or mechanical locking / pressing. During sea transport, high temperature and humidity, thermal expansion and contraction may cause it to fall off or wrinkle. It is also prone to softening and yellowing, resulting in uneven light output, rapid luminous efficacy decay, and short lifespan.

[0057] The disadvantages of a laminated chassis include:

[0058] 1. Low reliability: The reflective paper is adhered to the metal plate with adhesive. Under high temperature and high humidity, it is prone to wrinkling, bubbling, and yellowing, which reduces the service life of the entire lamp.

[0059] 2. The coating layer is easy to fall off. After the coated chassis is stamped and formed, the edges are cut off. Without the protection of the coating layer, the exposed metal is prone to rust, which causes the coating layer to gradually separate from the metal and fall off.

[0060] 3. Insufficient strength: Under the same stress conditions, the coating layer is more easily punctured or scratched compared to the painted chassis.

[0061] In view of the above situation, this application provides a lamp chassis and a panel lamp. The lamp chassis uses a titanium dioxide-containing coating as an anti-reflective coating, which can effectively improve the reflectivity of the chassis. The reflectivity can be achieved at the same level without adding reflective paper or using a film. This avoids the high cost of adding reflective paper and the undesirable phenomenon of yellowing and wrinkling of reflective paper. Moreover, the coating has higher strength than the film, is resistant to high temperature and humidity, is not prone to yellowing, and there is no coating peeling within the same lifespan.

[0062] The first aspect of this application provides a lamp chassis, such as... Figure 1 and Figure 2 As shown, the lamp chassis includes a base plate 10, a frame 20, and an anti-reflective coating;

[0063] The frame 20 is arranged around the four sides of the base plate 10, and the plane where the frame 20 is located forms an angle with the plane where the base plate 10 is located. The frame 20 and the base plate 10 together form the lamp cavity 100, which is used to install the lamp strip.

[0064] An anti-reflective coating is applied to the cavity wall of the lamp cavity 100. The anti-reflective coating is used to improve the reflectivity of the chassis.

[0065] Among them, anti-reactive coatings include coatings containing titanium dioxide.

[0066] The lamp chassis provided in this application includes a base plate for mounting LED strips, primarily serving a supporting and heat-dissipating function. A frame surrounds the base plate, forming a lamp cavity that helps reflect and concentrate light. An anti-reflective coating is applied to the cavity walls to increase reflectivity, allowing for more efficient light utilization and reduced light loss. The titanium dioxide used in this chassis is a high-refractive-index material with strong light-reflecting capabilities. Particle size affects scattering; uniform distribution creates specular reflection, resulting in multiple reflections before the light exits the lamp, improving overall efficiency. Therefore, the lamp chassis provided in this application exhibits high reflectivity, a coating that is resistant to peeling, high reliability, and expanded application scenarios (it can be applied to waterproof lamps).

[0067] In applications, the base plate serves as the base for the luminaire, used to fix the light strips (LED modules or LED bead arrays) and ensure precise positioning of the light source. In this embodiment, the base plate can be made of metal. A metal base plate (such as aluminum alloy) can quickly dissipate the heat generated by the LEDs, preventing luminous efficacy degradation. It can also improve overall rigidity, preventing the luminaire from deforming or vibrating, which could cause components to loosen.

[0068] In applications, the core function of the frame is to work with the base plate to enclose and form the lamp cavity. Specifically, it can form a closed or semi-closed cavity (lamp cavity) with the base plate, constraining the direction of light propagation and reducing lateral light leakage. Furthermore, the angle design between the frame and the base plate (such as tilted or perpendicular) adjusts the light reflection path and optimizes light uniformity. It also prevents external impacts from directly affecting the internal components of the lamp cavity (such as LED strips and reflective coatings).

[0069] In applications, anti-reflective coatings can improve luminous efficiency. Specifically, high-reflectivity coatings reduce light absorption loss, directing more light to the light-emitting surface of the lamp. Through diffuse or specular reflection, they eliminate the difference in brightness between LED beads (i.e., "graininess"). Some coatings also have anti-oxidation and moisture-proof functions, extending the service life of the chassis. The anti-reflective coating in this embodiment is a titanium dioxide coating, where the main component of titanium dioxide is titanium dioxide, with a refractive index as high as 2.5–2.7 (visible light band), far exceeding that of common resin substrates (refractive index approximately 1.4–1.6). According to the Fresnel reflection formula, the reflectivity at the interface of two media is positively correlated with the difference in refractive index. When light enters high-refractive-index titanium dioxide particles from low-refractive-index air (n≈1) or resin (n≈1.5), strong reflection occurs on the particle surface. The diameter of the titanium dioxide particles is typically controlled at 0.2–0.3 μm (close to the visible light wavelength of 400–700 nm), satisfying the Mie scattering condition and maximizing the scattering efficiency of visible light. The light from the titanium dioxide particles undergoes multiple reflections, refractions, and scatterings on their surface, forming a uniform diffuse reflection light field and avoiding glare problems caused by specular reflection.

[0070] In applications, anti-reflective coatings consist of 60-75% resin, 25-35% filler, approximately 4% leveling agent, and 1% titanium dioxide. Different reflectivities are achieved by adjusting the proportions of these four raw materials; the increase in reflectivity mainly depends on increasing the proportion of titanium dioxide. The titanium dioxide is uniformly distributed within the resin matrix, forming a dense reflective layer that reduces the probability of light being absorbed by the metal substrate after penetrating the coating. Through a baking process, a micron-level uneven structure can be formed on the coating surface, further increasing the light path length and the number of reflections (similar to the "light trap" effect).

[0071] In some embodiments, the anti-reflective coating is applied to the side of the base plate near the lamp cavity and also to the side of the frame near the lamp cavity, meaning the anti-reflective coating covers the entire inner wall of the lamp cavity. This improves the reflectivity of the base plate and effectively prevents light leakage from the sides, thereby enhancing luminous efficiency. In other embodiments, the anti-reflective coating is applied only to the side of the base plate near the lamp cavity, specifically enhancing the reflectivity of the base plate. In still other embodiments, the anti-reflective coating is applied to the side of the frame near the lamp cavity, effectively increasing the reflection of light by the frame and preventing light from escaping from the sides.

[0072] In some embodiments, such as Figure 2 As shown, the plane containing the frame 20 and the plane containing the base plate 10 form an angle α on the side outside the lamp cavity 100.

[0073] The value of α ranges from 80° to 90°. This contributes to improved structural stability, as right-angled or near-right-angle connections are generally more robust. Simultaneously, this angle may affect light reflection, guiding light more effectively outwards from the light-emitting surface, reducing lateral light leakage, and improving luminous efficiency. Furthermore, it simplifies manufacturing; bending processes are easier to control when near right angles, reducing stress concentration in the material and lowering the risk of cracking.

[0074] In specific embodiments, the specific value of α can be any value within the range of 80° to 90°, such as 80°, 82°, 85°, 88°, or 90°. This setting can reduce lateral light leakage. The near-vertical frame (α≈90°) can form an approximate "light trap" structure, redirecting lateral light back to the light surface through multiple reflections. The slight tilt angle (e.g., 80°~85°) combined with the anti-reflective coating (titanium dioxide) forms a light path dominated by diffuse reflection, eliminating the grainy appearance of the LED beads. It can also suppress glare. When the angle α>80°, the frame's obstruction of the observer's line of sight is enhanced, reducing the probability of directly seeing the LED beads or high-brightness reflective surfaces. High space utilization. When α≥80°, the frame's outward expansion is minimized, and the overall thickness of the luminaire is thinner (especially suitable for recessed installation). The near-right-angle frame design makes it easy to match with universal mounting brackets or hangers, reducing customization requirements. It can seamlessly adapt to common installation systems such as standard plasterboard ceilings and T-shaped keel.

[0075] In applications, the angle α between the frame and the base plate has a synergistic effect on the reflectivity-enhancing coating. When α = 80° to 90°, the number of reflections of light within the lamp cavity is reduced, thus decreasing the absorption loss of the titanium dioxide coating. Vertical or slightly inclined cavity walls facilitate uniform coverage by spraying, roller coating, or baking paint, avoiding dead corners that lead to a decrease in local reflectivity.

[0076] In some embodiments, the plane containing the frame 20 and the plane containing the base plate 10 form an angle α on the side outside the lamp cavity 100.

[0077] The value of α ranges from 50° to 65°. This setting expands the light emission angle, enhances light mixing uniformity, and softens edge shadows. In specific embodiments, the value of α can be any value within the range of 50° to 65°, such as 50°, 52°, 55°, 57°, 60°, 62°, or 65°. The inclined frame forms a funnel-shaped lamp cavity, allowing light to cover a wider area after multiple reflections. Smaller angles (such as 50° to 60°) increase the number of light reflections within the lamp cavity, and combined with the diffuse reflection characteristics of the titanium dioxide coating, further eliminate the grainy appearance of the LED beads. The inclined frame reduces the guiding effect of light, resulting in a gentler light intensity gradient at the edge of the lamp, reducing the light-dark boundary on walls or floors. The inclined frame forms a triangular support structure, dispersing impact forces from the sides (such as collisions with people or scratches from equipment). The surface area of ​​the inclined frame is approximately 15% to 25% larger than that of the vertical frame, which aids in heat dissipation. The coating utilization rate is optimized, and the tilt angle allows light to irradiate the coating surface at a smaller incident angle (close to the normal direction), so that the high reflectivity characteristics of titanium dioxide (≥92%) can be fully utilized.

[0078] It should be noted that the frame has an flared structure, meaning that the frame is inclined from the side closest to the base plate towards the side of the principle base plate towards the principle lamp cavity, or the frame is directly perpendicular to the base plate; that is, the acute angle or right angle formed by the frame and the base plate is the included angle α.

[0079] In some embodiments, such as Figures 3 to 6 As shown, the base plate 10 has a groove 101 on the side facing the lamp cavity 100. The groove 101 is distributed horizontally, vertically, and diagonally, and is used to install light strips. This allows for precise positioning of the light strips. The geometric contour of the groove matches the size of the light strip, ensuring that the light strips are arranged in the preset direction and spacing, avoiding manual installation deviations. The sidewall of the groove is in close contact with the light strip substrate, forming an additional heat conduction path. Grooves in different directions guide the light strips to be arranged at multiple angles, and combined with a reflective coating, achieve three-dimensional light control. Horizontal arrangement of light strips is suitable for wide and uniform lighting (such as classrooms and offices). Vertical arrangement of light strips enhances the light gradient in the depth direction (such as corridors and passageways). Interlaced light paths reduce moiré patterns or interference fringes (high-definition display backlight). The grooves form a reinforcing rib structure, improving the bending stiffness of the base plate (especially for thin designs). The grooves form directional air channels, promoting airflow along the groove, improving heat dissipation efficiency by 10% to 15%. If used with a fan, the grooves can guide airflow to concentrate and flush the hot areas of the light strips. In other embodiments, both transverse and longitudinal grooves 101 may be provided simultaneously, such as... Figure 3 As shown, this is to facilitate the formation of a matrix-type light strip structure.

[0080] In some embodiments, the lamp base is a painted base, and the paint finish of the painted base is an anti-reflective coating. Applying a titanium dioxide coating to the base plate and frame via painting is a simple process, and the coating is not easily peeled off. Furthermore, the painted base undergoes spraying and high-temperature curing, resulting in a harder surface that is wear-resistant and corrosion-resistant, making it suitable for high-humidity or corrosive environments, such as kitchens, bathrooms, or industrial sites.

[0081] This application also provides a panel light, such as... Figure 7 and Figure 8 As shown, the panel light includes:

[0082] The lamp chassis and lamp strip 30 described in the first aspect;

[0083] The light strip 30 is located on one side of the base plate 10 and the lamp cavity 100.

[0084] The panel light provided in this application embodiment has all the beneficial effects described in the first aspect because it has the lighting chassis described in the first aspect. In addition, the application scenarios of the panel light provided in this application are expanded, and it can be used in some outdoor application scenarios.

[0085] In some embodiments, such as Figure 7 As shown, the light strips 30 are arranged in a staggered pattern both horizontally and vertically; in other embodiments, the light strips 30 are arranged in a diagonally staggered pattern. This arrangement is beneficial for improving the uniformity of light mixing. The staggered arrangement of the light strips causes the light to cross and reflect multiple times within the lamp cavity, eliminating local dark areas. It can be adapted to straight strip, ring, or matrix light strip layouts to meet customized needs (such as artistic lighting, medical shadowless lamps).

[0086] In some embodiments, as shown in the figure, multiple sets of light strips 30 are provided, and the spacing between two adjacent sets of light strips 30 arranged in the same direction is 85mm to 100mm. In specific embodiments, the spacing between light strips can be any value within the range of 85mm to 100mm, such as 85mm, 88mm, 90mm, 95mm, or 100mm.

[0087] In applications, when the spacing is ≤100mm, the light fields of adjacent LED strips can fully overlap, eliminating the light-dark boundary line through the diffuse reflection of the titanium dioxide coating. Matching the LED strip spacing with the lamp cavity height ensures that light is uniformly emitted after 2-3 reflections. When the spacing is ≥85mm, the luminous field coverage of a single LED partially overlaps, reducing the probability of localized high-brightness areas. Combined with the frame tilt angle (e.g., 80°-90°), this creates shielding, reducing the directly visible light source area. A spacing of 85-100mm provides sufficient airflow for natural convection heat dissipation, preventing heat buildup. The grooved structure of the base plate forms a directional airflow path, improving heat dissipation efficiency. Larger spacing reduces thermal interference between LED strips, preventing uneven material expansion caused by localized high-temperature areas.

[0088] In some embodiments, such as Figure 7 As shown, the spacing between two adjacent LED beads 300 on the LED strip 30 is 50mm to 55mm. This effectively optimizes the optical performance of the panel light. Specifically, it ensures the continuity of the light spot. The LED bead emission angle is typically 120°. When the spacing is ≤55mm, the light fields of adjacent LED beads can completely overlap within a distance of 1m. Combined with the diffuse reflection of the titanium dioxide coating, the "graininess" between LED beads is eliminated. The dense arrangement (compared to a 70mm spacing) reduces the brightness requirement of a single LED bead. By using multiple LED beads to emit light at low brightness in synergy, direct glare is reduced.

[0089] In some embodiments, such as Figure 8 As shown, the panel light also includes a diffuser plate 40 and an outer frame 50. The diffuser plate 40 is located at the opening of the chassis. Specifically, the diffuser plate 40 is connected to the frame 20 of the chassis to enclose the lamp cavity of the chassis. The outer frame 50 is located on the side of the diffuser plate 40 away from the chassis and cooperates with the frame 20 of the chassis to fix the diffuser plate 40.

[0090] In applications, the diffuser plate 40 serves to evenly distribute light. LED chips, as point light sources, are directly mounted on the chassis. Without processing, the emitted light would create noticeable bright and dark spots on the lamp surface. The diffuser plate, through its special microstructure, scatters the light, transforming the point light source into a softer surface light source, ensuring uniform light output and avoiding areas of excessive brightness or darkness. The diffuser plate reduces the intensity of direct light, softening strong glare and preventing eye strain from direct viewing of the LED light source. This characteristic is particularly crucial for visual comfort in office or home environments. As part of the outer or middle layer of the lamp, the diffuser plate prevents dust and moisture from entering the interior, extending the lifespan of the LED chips and circuitry. Simultaneously, its physical strength also provides some protection for the internal structure. By adjusting the material of the diffuser plate (such as PC (Polycarbonate) or PMMA (Polymethyl Methacrylate)) and the haze (the balance between light transmittance and scattering ability), an ideal light diffusion effect can be achieved while ensuring minimal brightness loss, resulting in a pure light effect without graininess on the surface of the lamp and enhancing the overall aesthetics.

[0091] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0092] The above-described embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them. Although the embodiments of this application have 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, and should all be included within the protection scope of the embodiments of this application.

Claims

1. A luminaire chassis, characterized by, The lamp base comprises: a bottom plate; a frame, which is arranged around the periphery of the bottom plate and forms an angle with the plane of the bottom plate, and which, together with the bottom plate, forms a lamp cavity for mounting a lamp strip; and a reflection-increasing coating, which is arranged on the cavity wall of the lamp cavity and is used to improve the reflectivity of the bottom plate; wherein the reflection-increasing coating comprises a titanium-containing white paint coating.

2. The luminaire chassis of claim 1, wherein, The reflection-increasing coating is arranged on the side of the bottom plate close to the lamp cavity. And / or, the reflection-increasing coating is arranged on the side of the frame close to the lamp cavity.

3. The luminaire chassis of claim 1, wherein, The plane of the frame forms an angle α with the plane of the bottom plate on the side outside the lamp cavity, and the value of the angle α is in the range of 80°-90°.

4. The luminaire chassis of claim 1, wherein, The plane of the frame forms an angle α with the plane of the bottom plate on the side outside the lamp cavity, and the value of the angle α is in the range of 50°-65°.

5. The luminaire chassis of claim 1, wherein, The side of the bottom plate facing the lamp cavity is provided with a groove, and the groove is distributed in at least one of the horizontal, vertical, and diagonal directions, and is used to mount a lamp strip.

6. The luminaire chassis of any of claims 1 to 5, wherein, The lamp base is a baking paint base, and the paint surface of the baking paint base is the reflection-increasing coating.

7. A panel light characterised by The lamp base comprises: the lamp base of any one of claims 1-6; a lamp strip, which is arranged on the side of the bottom plate facing the lamp cavity.

8. The panel light of claim 7, wherein The lamp strip is arranged in a staggered manner in the horizontal and vertical directions. Or, the lamp strip is arranged in a staggered manner in the diagonal direction.

9. The panel light of claim 7, wherein, The lamp strip is provided in multiple groups, and the distance between two adjacent groups of lamp strips arranged in the same direction is 85-100 mm.

10. Panel light according to any of claims 7 to 9, characterized in that The distance between two adjacent lamp beads on the lamp strip is 50-55 mm.

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