A light uniformity plate unit and a light uniformity plate combined by the same and an outer decorative lamp
By setting a variable wall thickness structure at the end of the light homogenizing plate unit and combining them, the problems of high production cost and optical dark area of large-size light homogenizing plates are solved, and efficient optical effect and uniformity are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- YANFENG PLASTIC OMNIUM AUTOMOTIVE EXTERIOR SYST CO LTD
- Filing Date
- 2024-12-04
- Publication Date
- 2026-06-05
AI Technical Summary
Existing technologies have high production costs for large-size light-diffusing plates, poor dimensional stability, and difficulty in controlling deformation. Furthermore, optical dark areas and uniformity issues are prone to occur when light-diffusing plate units are assembled.
Adjacent light-diffusing plate units are designed with variable wall thickness at their ends and can be combined by overlapping or non-overlapping methods. Various overlapping forms, such as complementary, embedded, contour-following interlocking, nesting, and superimposed overlapping structures, are designed to ensure the continuity and uniformity of optical effects.
It reduces production costs, improves the dimensional stability and assembly convenience of the light-diffusing plate, reduces optical dark areas, and achieves uniformity and optical effect of the large light-diffusing plate.
Smart Images
Figure CN122148927A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of optical component structure design for lighting products, specifically relating to a light-diffusing plate unit and the light-diffusing plate and exterior lamps formed by combining them. Background Technology
[0002] A light-diffusing plate is an optical element that can evenly scatter light from a light source, making the light emitted from a point source more uniform. With the rise of automotive exterior lights such as continuous lights, grille lights, and ambient lights, illuminated designs have gradually evolved from small logos to larger continuous lights, illuminated grilles, and illuminated front bumpers, in which light-diffusing plates are extremely common. Illuminated designs are also gradually shifting from partially broken sections to seamless, continuous illumination or extremely small breaks, which poses a challenge for the design and size control of larger interior components.
[0003] Larger internal lenses, such as light-diffusing plates, can achieve continuous light emission within the luminous area without optical dark zones through integral injection molding. However, this approach faces challenges including high costs of large optical molds, poor product dimensional stability, difficulty in controlling deformation, assembly difficulties, and low yield rates, all of which negatively impact product performance. Furthermore, existing technologies typically increase wall thickness to control deformation, which is detrimental to light transmission, increasing material costs and requiring more LEDs to compensate for the loss of material optical performance. Figure 1 As shown, due to dimensional tolerances and assembly tolerances of the light-diffusing plates, a safety clearance b needs to be controlled between the two light-diffusing plates to ensure a safe assembly clearance. However, since the distance a between the light-emitting surfaces is small, if two adjacent light-diffusing plates have the same wall thickness and no wall thickness matching design is made, dark areas will appear.
[0004] For large-sized light-emitting products requiring internal lenses, the cost of large molds is higher than that of small molds. Furthermore, the integrated injection molding of the internal light-diffusing plate leads to poor dimensional stability and uncontrollable deformation, resulting in assembly difficulties. Optical components in light-emitting products, unlike ordinary non-optical parts, require consideration of not only material cost and performance but also optical performance. For example, how can different light-diffusing plates, under continuous light-emitting shapes, be structurally designed to equivalently replace the optical effect of a single, integrated light-diffusing plate? Therefore, a solution is urgently needed that can reduce production costs while optimizing mold costs and dimensional stability, and address the optical dark areas and uniformity issues arising from the combination of two or more light-diffusing plate units. Summary of the Invention
[0005] The purpose of this invention is to solve at least one of the above-mentioned problems by providing a light-diffusing plate unit and a light-diffusing plate and exterior lights composed thereof. By setting the ends of adjacent light-diffusing plate units to be mutually cooperating variable wall thickness structures, the light-diffusing plate units cooperate to achieve the effect of a large light-diffusing plate. This solves the problem that the cost of large light-diffusing plates is high in the prior art, and that large light-diffusing plates assembled without cooperating light-diffusing plate units will have dark areas at the edges. This invention reduces the manufacturing cost of large light-diffusing plates that have not been disassembled, while improving the uniformity of light-diffusing plate units that are directly assembled without wall thickness matching, reducing dark areas, and making the uniformity of light-diffusing plate units close to that of a large light-diffusing plate.
[0006] The objective of this invention is achieved through the following technical solution:
[0007] The first aspect of the present invention discloses a light-diffusing plate unit, wherein the end of the light-diffusing plate unit is a variable wall thickness structure, and the variable wall thickness structures between the light-diffusing plate units cooperate with each other.
[0008] When the light-diffusing plate units overlap each other, the variable wall thickness structure between the light-diffusing plate units is an overlapping structure, and the overlapping structures between the light-diffusing plate units overlap each other.
[0009] When the light-diffusing plate units are spaced apart, the variable wall thickness structure between the light-diffusing plate units is a non-overlapping structure, and there are gaps between the non-overlapping structures between the light-diffusing plate units.
[0010] Furthermore, the overlapping structure includes any one of the following: complementary overlapping structure, embedded overlapping structure, conformal interlocking overlapping structure, nested overlapping structure, and superimposed overlapping structure.
[0011] Furthermore, the complementary overlapping structure is a stepped complementary structure of two light-diffusing plate units at the variable wall thickness structure, and the complementary overlapping structure is formed by the mutual cooperation of the connecting ends of the two light-diffusing plate units.
[0012] Furthermore, the embedded overlapping structure consists of two light-diffusing plate units connected at male and female ends, respectively, forming a mutually cooperating embedded overlapping structure through a single trapezoidal concave-convex surface or a circular arc concave surface variable wall thickness structure.
[0013] Furthermore, the contour-following interlocking structure consists of two light-diffusing plate units whose connecting ends are interlocking oblique sawtooth surfaces, vertical sawtooth surfaces, or regular rectangular tenon and mortise surfaces, forming a mutually cooperating contour-following interlocking structure through the cooperation of sawtooth-like surfaces.
[0014] Furthermore, the nested lap structure includes any one of the following: a hot-riveted rib, a welded rib, and a snap-fit nested lap structure.
[0015] Furthermore, the hot riveting nested overlapping structure is formed by connecting two light-diffusing plate units into a large light-diffusing plate through a hot riveting process.
[0016] Furthermore, the nested lapped structure of the welded ribs is formed by laser welding, ultrasonic welding, or other welding methods to connect and combine two adjacent light-diffusing plate units into a large light-diffusing plate.
[0017] Furthermore, the snap-fit nesting and overlapping structure is applicable to various forms of snap-fit connections that connect and combine two adjacent light-diffusing plate units into a large light-diffusing plate.
[0018] Furthermore, when multiple uniform light plate units are connected together in the superimposed overlapping structure, their connecting ends form a variable wall thickness structure through wall thickness reduction and complementarity.
[0019] Furthermore, when the light-diffusing plate units overlap each other, the variable wall thickness structural area of two adjacent light-diffusing plates is the overlapping area, and the thickness of the light-diffusing plate in the overlapping area is less than or equal to the thickness of the light-diffusing plate unit itself.
[0020] Furthermore, the sum of the thicknesses of the edges of the light-diffusing plates in the overlapping area is similar to the thickness of the light-diffusing plate unit itself.
[0021] Furthermore, when the variable wall thickness structure between the light-diffusing plate units is an overlapping structure, in the front view, adjacent light-diffusing plate units overlap, the matching light-emitting surfaces are continuous in the front view, and the combined large light-diffusing plate has no gaps and no obvious optical dark areas in the front view.
[0022] Furthermore, when the variable wall thickness structure between the light-diffusing plate units is an overlapping structure, the wall thickness of the light-diffusing plate unit gradually decreases at the edge of the overlapping area.
[0023] Since different wall thicknesses can affect uniformity and brightness consistency, this invention designs several schemes for combining wall thicknesses by gradually changing the wall thickness and then thinning it in the overlapping area, thereby solving the problem of inconsistent uniformity in the overlapping area.
[0024] Furthermore, a light-diffusing plate can be disassembled into multiple light-diffusing plate units, with two light-diffusing plate units overlapping, thereby achieving cost reduction and size control, while simultaneously achieving the optical effect of a single light-diffusing plate.
[0025] Furthermore, when the variable wall thickness structure between the light-diffusing plate units is a non-overlapping structure, the variable wall thickness structure area of two adjacent light-diffusing plates is a non-overlapping area, and the wall thickness of the light-diffusing plate unit at the end of the non-overlapping area gradually becomes thinner.
[0026] Furthermore, the two adjacent light-diffusing plate units are designed with variable wall thickness in the non-overlapping area, which can achieve light-diffusing plate area coverage of the light-emitting surface, improve the dark area, and enhance uniformity.
[0027] Furthermore, the light-diffusing plate unit is designed to mimic the overall light-emitting shape of the light-diffusing plate and adapt to the shape of the light-emitting surface.
[0028] The second aspect of the present invention discloses a light-diffusing plate, which is formed by assembling any of the light-diffusing plate units described above.
[0029] Furthermore, the light-diffusing plate is composed of several light-diffusing plate units, and the light-diffusing plate can be disassembled into several light-diffusing plate units.
[0030] The third aspect of the present invention discloses an exterior lamp, comprising a light-emitting surface and any of the above-described light-diffusing plates, wherein the light-emitting light path of the light-emitting surface passes through the light-diffusing plate.
[0031] Furthermore, when the light-emitting surface has a continuous structure, it is a light-diffusing plate composed of overlapping light-diffusing plate units.
[0032] Furthermore, when the light-emitting surface is a disconnected structure, the light-diffusing plate units are spaced apart or overlapped to form a light-diffusing plate.
[0033] Furthermore, when the light-emitting surface is a broken structure, the minimum safety gap between the spaced light-diffusing plate units is less than the distance of the break in the light-emitting surface.
[0034] Compared with the prior art, the present invention has the following advantages:
[0035] 1. This invention designs different light-diffusing plate units to overlap in adjacent areas, so that in the front view, the two light-diffusing plate units can be approximated as a complete large light-diffusing plate. In this view, the light-emitting surface of the large light-diffusing plate is continuous, without gaps or optical dark areas, thus meeting the light-emitting requirements of the light-emitting surface being disconnected or not disconnected.
[0036] 2. According to the design concept provided by the present invention, the two uniform light plate units are combined with variable wall thickness in adjacent areas when they are not overlapped. This can ensure a safe distance and achieve uniform light plate area coverage of the light-emitting surface in the light-emitting surface area, thereby improving the dark area formed when the uniform light plate units are combined into a large uniform light plate in conventional designs and improving the light emission uniformity of the large uniform light plate.
[0037] 3. By designing different light-diffusing plate units to overlap and combine, the present invention enables multiple light-diffusing plate units to be combined into approximately one large light-diffusing plate, thereby reducing the large errors in the production process of large-size light-diffusing plates and reducing production and transportation costs.
[0038] 4. The present invention designs the structure of adjacent areas of different light-diffusing plate units. By gradually changing the wall thickness and then thinning it in the overlapping area, the sum of the wall thickness of the light-diffusing plate in the overlapping area is made to be close to the wall thickness of the light-diffusing plate unit body, which effectively solves the problem of inconsistent uniformity in the overlapping area. Attached Figure Description
[0039] Figure 1 This is a schematic diagram of an exterior lamp structure in the prior art where the light-diffusing plate units are not overlapped and the light-emitting surface is partially disconnected; where a is the distance of the disconnection of the light-emitting surface and b is the minimum gap between the two light-diffusing plate units.
[0040] Figure 2 A schematic diagram of the cross-section of two uniformly smooth plate units with a complementary overlapping structure for a variable wall thickness structure.
[0041] Figure 3 A schematic diagram of the cross-section of two uniform light plate units with an embedded overlapping structure for a variable wall thickness structure.
[0042] Figure 4 A schematic diagram of the cross-section of two uniformly smooth plate units with a contour-following interlocking structure for variable wall thickness.
[0043] Figure 5 A schematic diagram of the cross-section of two uniformly smooth plate units, which are nested and overlapping structures with varying wall thickness.
[0044] Figure 6 This is a schematic diagram of the overall shape of the light-emitting surface adapted to the light-diffusing plate of the present invention.
[0045] Figure 7 A schematic diagram of a large light-diffusing plate composed of four complementary overlapping small light-diffusing plate units.
[0046] Figure 8 for Figure 7 A front view of the complementary overlapping area of light-diffusing plate unit I and light-diffusing plate unit II in the large light-diffusing plate, where AA and CC are both section lines.
[0047] Figure 9 This is a cross-sectional view along line AA of the complementary overlapping area of the light-diffusing plate unit I and light-diffusing plate unit II, which are disassembled components.
[0048] Figure 10 This is a cross-sectional view along line CC of the complementary overlapping area of light-diffusing plate unit I and light-diffusing plate unit II, which are disassembled components.
[0049] Figure 11 The diagram shows the structure of an exterior lamp where the light-diffusing plate units of the present invention are not overlapped and the light-emitting surface is partially disconnected. Figure I is a schematic diagram of the overall structure of the light-emitting surface and the light-diffusing plate. In Figure I, BB is a cutting line, and Figure II is a cross-sectional view along line BB.
[0050] Figure 12 Figure 1 is a schematic diagram of three light-diffusing plate units with a variable wall thickness and an overlapping structure. Figure 2 is a schematic diagram of the overall structure of the light-emitting surface and the light-diffusing plate. In the figure, DD is the cutting line and Figure 3 is a cross-sectional view along the DD line.
[0051] In the figure, 1-Light-diffusing plate unit I; 2-Light-diffusing plate unit II; 3-Light-diffusing plate unit III; 4-Light-diffusing plate unit IV; 5-Variable wall thickness structure region of the two light-diffusing plate units; 6-Light-emitting surface. Detailed Implementation
[0052] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.
[0053] In the description of this invention, 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," and "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 invention 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 this invention.
[0054] This invention provides a method for designing a light-diffusing plate by disassembling it into two or more smaller light-diffusing plate units, with the connection ends connecting these units featuring a variable wall thickness structure. This improves the optical performance of the light-diffusing plate, achieving uniformity close to that of a single light-diffusing plate. This invention is also applicable to products where the emitting surface is discontinuous but the break area is narrow, and the break distance is less than the minimum safe clearance of the light-diffusing plate. Furthermore, the lack of wall thickness in the fit between the light-diffusing plates leads to dark areas and poor uniformity. This invention not only reduces costs but also improves assembly convenience and performance stability.
[0055] This invention discloses a light-diffusing plate unit, which achieves the optical effect of a whole light-diffusing plate by setting the ends of the light-diffusing plate unit as mutually cooperating variable wall thickness structures.
[0056] When the light-diffusing plate units overlap each other, the variable wall thickness structure between the light-diffusing plate units is an overlapping structure, and the overlapping structures between the light-diffusing plate units overlap each other.
[0057] When the light-diffusing plate units are spaced apart, the variable wall thickness structure between the light-diffusing plate units is a non-overlapping structure, and there are gaps between the non-overlapping structures between the light-diffusing plate units.
[0058] like Figures 2-5 As shown, the overlapping structure includes any one of the following: complementary overlapping structure, embedded overlapping structure, conformal interlocking overlapping structure, nested overlapping structure, and superimposed overlapping structure.
[0059] like Figure 2As shown, the complementary overlapping structure is a stepped complementary structure of two light-diffusing plate units at the variable wall thickness structure, and the complementary overlapping structure is formed by the mutual cooperation of the connection ends of the two light-diffusing plate units.
[0060] like Figure 3 As shown, the embedded overlapping structure consists of two light-diffusing plate units connected at male and female ends, respectively. Through a variable wall thickness structure with a single trapezoidal concave-convex surface or a circular arc concave surface, an embedded overlapping structure is formed that fits each other.
[0061] like Figure 4 As shown, the contour interlocking structure consists of two light-diffusing plate units whose connecting ends are interlocking oblique sawtooth surfaces, vertical sawtooth surfaces, or regular rectangular tenon and mortise surfaces. The interlocking structure is formed by the cooperation of the sawtooth-like surfaces.
[0062] like Figure 5 As shown, the nested lap structure includes any one of the following: nested lap by hot riveting, by welding, and by snap fasteners.
[0063] The hot riveting nested lap structure is a combination of two light-diffusing plate units into a large light-diffusing plate through a hot riveting process.
[0064] The nested lapped structure of the welded ribs is formed by laser welding, ultrasonic welding, or other welding methods to connect and combine two adjacent light-diffusing plate units into a large light-diffusing plate.
[0065] The buckle nesting and overlapping structure is applicable to various types of buckles that connect and combine two adjacent light-diffusing plate units into a large light-diffusing plate.
[0066] The superimposed overlapping structure consists of multiple uniform light plate units connected together to form a connection end. At the connection end, through the reduction and complementarity of wall thickness, they jointly form a variable wall thickness structure that cooperates with each other.
[0067] When light-diffusing plate units overlap each other, the variable wall thickness structural area of two adjacent light-diffusing plates is the overlapping area, and the thickness of the light-diffusing plate in the overlapping area is less than or equal to the thickness of the light-diffusing plate unit itself.
[0068] The sum of the edge thicknesses of the light-diffusing plate units in the overlapping area is similar to the thickness of the light-diffusing plate unit itself.
[0069] When the variable wall thickness structure between the light-diffusing plate units is an overlapping structure, in the front view, adjacent light-diffusing plate units overlap, the matching light-emitting surfaces are continuous in the front view, and the combined large light-diffusing plate has no gaps and no optical dark areas in the front view.
[0070] like Figure 10 As shown, when the variable wall thickness structure between the light-diffusing plate units is an overlapping structure, the wall thickness of the light-diffusing plate unit gradually decreases at the edge of the overlapping area.
[0071] Since different wall thicknesses can affect uniformity and brightness consistency, this invention proposes to break down a large light-diffusing plate into light-diffusing plate units, and to design variable wall thicknesses at the ends of adjacent light-diffusing plate units and then combine them together. Several overlapping schemes with variable wall thicknesses are proposed for the overlapping area, and an example of one type of wall thickness combination is disclosed to solve the problem of inconsistent uniformity in the overlapping area.
[0072] A light-diffusing plate is disassembled into multiple light-diffusing plate units, and two light-diffusing plate units are overlapped to reduce costs and control size, while achieving the optical effect of a whole light-diffusing plate.
[0073] When the variable wall thickness structure between the light-diffusing plate units is a non-overlapping structure, the variable wall thickness structure area of two adjacent light-diffusing plates is a non-overlapping area, and the wall thickness of the light-diffusing plate unit at the end of the non-overlapping area gradually becomes thinner.
[0074] Two adjacent light-diffusing plate units are designed with variable wall thickness in the non-overlapping area. This ensures a safe distance while achieving light-diffusing plate area coverage of the light-emitting surface, improving dark areas and enhancing uniformity.
[0075] Considering the possibility of broken light-emitting surfaces, when the light-emitting surfaces are broken and the gap between them is smaller than the safe gap between the light-diffusing plate units, the light-diffusing plates can be set at intervals. By matching the wall thickness of adjacent areas, better uniformity can be achieved.
[0076] like Figure 7 As shown, the light-diffusing plate unit is designed to mimic the overall light-emitting shape of the light-diffusing plate and adapt to the shape of the light-emitting surface.
[0077] The present invention provides a light-diffusing plate, which is formed by combining any of the light-diffusing plate units described above.
[0078] The light-diffusing plate is composed of several light-diffusing plate units, and the light-diffusing plate can be disassembled into several light-diffusing plate units.
[0079] The present invention provides an exterior lamp, comprising a light-emitting surface and any of the above-described light-diffusing plates, wherein the light-emitting light path of the light-emitting surface passes through the light-diffusing plate.
[0080] When the light-emitting surface is a continuous structure, it is a light-diffusing plate formed by overlapping light-diffusing plate units.
[0081] When the light-emitting surface is a disconnected structure, the light-diffusing plate units are spaced apart or overlapped to form a light-diffusing plate.
[0082] When the light-emitting surface is a broken structure, the minimum safety gap between the spaced light-diffusing plate units is less than the distance between the broken light-emitting surfaces.
[0083] Example 1
[0084] The following is in accordance with Figures 6-10 The content shown, through the description of the embodiments, further illustrates the specific implementation of the present invention in detail. Embodiment 1 includes a light-diffusing plate composed of overlapping light-diffusing plate units and a suitable exterior lamp.
[0085] Figure 6 This is a structural schematic diagram of the overall shape of the light-emitting surface adapted to the overlapping structure uniform light plate unit of the present invention. Figure 6 and Figure 10 As can be seen, in this embodiment, the four light-diffusing plate units are designed to mimic the shape of the light-emitting surface 6.
[0086] Figure 7 A schematic diagram of a large light-diffusing plate composed of four small light-diffusing plate units is shown. A light-diffusing plate can be disassembled into four light-diffusing plate units. Light-diffusing plate unit I1, light-diffusing plate unit II2, light-diffusing plate unit III3, and light-diffusing plate unit IV4 are interconnected, thereby achieving cost reduction and size control, while realizing the optical effect of a whole light-diffusing plate.
[0087] Figure 8 for Figure 7 A front view of the complementary overlapping area between homogenizing plate unit I1 and homogenizing plate unit II2 in a large homogenizing plate assembly, where AA and CC are section lines. Figure 9 This is a cross-sectional view along line AA of the complementary overlapping area of light-diffusing plate unit I1 and light-diffusing plate unit II2 in a large light-diffusing plate. The connection end of the two light-diffusing plate units forms a variable wall thickness structure. In the front view, the overlapping combination has an overlapping area, which can approximate the visual effect of the two light-diffusing plate units as a complete large light-diffusing plate. In the front view, the light-emitting surface of the exterior lamp obtained by the large light-diffusing plate and the light-emitting surface is continuous, without gaps or optical dark areas, thus meeting the light-emitting requirement of the light-emitting shaped surface without any breaks.
[0088] Figure 9 This is a cross-sectional view along line CC of the complementary overlapping area of light-diffusing plate unit I1 and light-diffusing plate unit II2 in a large light-diffusing plate. It can be seen that the wall thickness of the variable wall thickness structural region 5 of the two light-diffusing plate units gradually decreases. This invention proposes a method of disassembling the large light-diffusing plate into light-diffusing plate units, designing variable wall thicknesses at the ends of adjacent light-diffusing plate units, and then combining them. Several overlapping schemes with varying wall thicknesses are proposed for the overlapping area, and an example of one type of wall thickness combination is disclosed, solving the problem of inconsistent uniformity in the overlapping area.
[0089] Example 2
[0090] The following is in accordance with Figure 11 The content shown, through the description of the embodiments, further illustrates the specific implementation of the present invention in detail. Embodiment 2 includes a light-diffusing plate composed of non-overlapping light-diffusing plate units.
[0091] This invention is also applicable to situations where the light-emitting surface is disconnected and the light-diffusing plate does not need to be overlapped.
[0092] Figure 1 This is a schematic diagram of a structure in the prior art where the light-diffusing plate units are not overlapped and the light-emitting surface is partially broken. Figure 11 The diagram shows the structure of an exterior lamp using the combined scheme of the present invention, where the light-diffusing plate units are not overlapped and the light-emitting surface is partially disconnected. Figure I is a schematic diagram of the overall structure of the light-emitting surface and the light-diffusing plate, where BB is a cutting line, and Figure II is a cross-sectional view along line BB. In the figures, a is the distance of the disconnection of the light-emitting surface, and b is the minimum gap between the two light-diffusing plate units.
[0093] Due to dimensional tolerances and assembly tolerances of the light-diffusing plate, a safety clearance b needs to be controlled between the two light-diffusing plate units to ensure a safe assembly clearance. However, because the distance a between the light-emitting surfaces is small, the existing technology does not design wall thickness matching between adjacent light-diffusing plate units, which can lead to issues such as... Figure 1 The dark area shown is the distance a (disconnection between the luminous surface and the dark area). Following the design concept provided by this invention, according to... Figure 11 The connection end of the two uniform light plate units is set as a variable wall thickness area. The edge thickness of the two uniform light plate units gradually decreases and they cooperate with each other. This can ensure the safety distance b and make the uniform light plate completely cover the light-emitting area of the light-emitting surface 6, improve the dark area of the exterior lamp and enhance the uniformity of light emission.
[0094] Example 3
[0095] The following is in accordance with Figure 12 The content shown, through the description of the embodiments, further illustrates the specific implementation of the present invention in detail. Embodiment 3 includes a light-diffusing plate composed of multiple light-diffusing plate units and a matching light-emitting surface.
[0096] Figure 12 Figure 1 shows a schematic diagram of three light-diffusing plate units with a variable wall thickness and an overlapping structure. Figure 2 shows the overall structure of the light-emitting surface and the light-diffusing plate, where DD is the cutting line and Figure 3 shows a cross-sectional view along line DD. As shown in the figure, when the three light-diffusing plate units are overlapped, the light-emitting area of the light-emitting plate is the shaded area shown in the figure. When multiple light-diffusing plates are overlapped, the design of thinning the wall thickness at the edge of the light-diffusing plate achieves a fit. Furthermore, when multiple light-diffusing plate units are used in combination, the shape of the large light-diffusing plate formed can be flexibly changed when the shape of the light-diffusing plate unit is fixed, achieving cost reduction and efficiency improvement in the manufacturing process and flexible and wide-ranging effects.
[0097] The above-described embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various variations can be made to the embodiments of the present invention. For example: adjustments to the wall thickness, overlapping form, overlapping area, range and size of the light-diffusing plate; overlapping, stacking, and varying wall thickness of two or more light-diffusing plates; any structural form adapted to the optical surface; disassembly of an independent light-diffusing plate; adjustments to the wall thickness of adjacent light-diffusing plates; and structural designs to improve uniformity, all fall within the scope of protection of this patent. That is, all simple and equivalent changes and modifications made based on the claims and description of this application fall within the scope of protection of the claims of this invention. Contents not described in detail in this invention are conventional technical content.
[0098] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.
Claims
1. A light-diffusing plate unit, characterized in that, The ends of the light-diffusing plate unit are variable wall thickness structures, and the variable wall thickness structures between the light-diffusing plate units cooperate with each other. When the light-diffusing plate units overlap each other, the variable wall thickness structure between the light-diffusing plate units is an overlapping structure, and the overlapping structures between the light-diffusing plate units overlap each other. When the light-diffusing plate units are spaced apart, the variable wall thickness structure between the light-diffusing plate units is a non-overlapping structure, and there are gaps between the non-overlapping structures between the light-diffusing plate units.
2. The light-diffusing plate unit according to claim 1, characterized in that, When light-diffusing plate units overlap each other, the variable wall thickness structural area of two adjacent light-diffusing plates is the overlapping area, and the thickness of the light-diffusing plate in the overlapping area is less than or equal to the thickness of the light-diffusing plate unit itself.
3. A light-diffusing plate unit according to claim 2, characterized in that, The overlapping structure includes any one of the following: complementary overlapping structure, embedded overlapping structure, conformal interlocking type, nested overlapping structure, and superimposed overlapping structure.
4. A light-diffusing plate unit according to claim 3, characterized in that, The nested lap structure includes any one of the following: nested lap joint by hot riveting, by welding, and by snap-fit.
5. A light-diffusing plate unit according to claim 1, characterized in that, The wall thickness of the light-diffusing plate at the end of the non-overlapping area gradually decreases.
6. A light-diffusing plate, characterized in that, It is formed by assembling the light-diffusing plate unit as described in claim 1.
7. An exterior lamp, characterized in that, It includes a light-emitting surface and a light-diffusing plate as described in claim 6, wherein the light-emitting light path of the light-emitting surface passes through the light-diffusing plate.
8. An exterior lamp according to claim 7, characterized in that, When the light-emitting surface has a continuous structure, the light-diffusing plate units are overlapped to form a light-diffusing plate.
9. An exterior lamp according to claim 7, characterized in that, When the light-emitting surface is a disconnected structure, the light-diffusing plate units are spaced apart or overlapped to form a light-diffusing plate.
10. An exterior lamp according to claim 7, characterized in that, When the light-emitting surface is a broken structure, the minimum safety gap between the spaced light-diffusing plate units is less than the distance between the broken light-emitting surfaces.