Double-layer optical light-transmitting plate illumination structure

Abstract

The invention relates to the field of LED lamps, in particular to a double-layer optical light-transmitting plate lighting structure. A double-layer optical light-transmitting plate lighting structure comprises a mounting frame, a main lighting assembly, two upper light supplementing assemblies and two side light supplementing assemblies. The main lighting assembly comprises a lower light-transmitting plate used for transmitting light outwards and a lower LED lamp strip serving as a light-emitting source. The upper light supplementing assembly comprises an upper light-transmitting plate used for supplementing light to the lower light-transmitting plate and an upper LED lamp strip serving as a light-emitting source. Light emitted by the upper LED lamp strip is transmitted outwards through the upper light-transmitting plate and irradiates the lower light-transmitting plate. Light rays emitted by the lower LED lamp strip and light rays transmitted from the upper light-transmitting plate jointly pass through the lower light-transmitting plate and are transmitted outwards; the side light supplementing assembly comprises a side LED lamp strip. The LED lamp has the advantage of being good in lighting effect. And good brightness uniformity is achieved in a reasonable use area. And particularly, the problem that the edge brightness is reduced can be solved.

Description

Technical Field

[0001] The present invention relates to the field of LED lamps, and in particular to a double-layer optical light-transmitting plate lighting structure. Background Art

[0002] The core of a lamp is a light-emitting element and a light-guiding or light-transmitting element. A reasonable arrangement of the light-emitting element and the light-transmitting element can enable the lamp to have a better lighting effect.

[0003] A table lamp is a lamp used on a desk, enabling a user to obtain sufficient light when reading data or processing documents, so as to avoid eye fatigue caused by insufficient light. A table lamp particularly emphasizes the lighting effect. It is necessary to optimize the core of the lamp to improve the problem of uneven lighting brightness. Summary of the Invention

[0004] The purpose of the present invention is to provide a double-layer optical light-transmitting plate lighting structure to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A double-layer optical light-transmitting plate lighting structure, comprising: a mounting frame, a main lighting assembly, two upper supplementary lighting assemblies, and two side supplementary lighting assemblies; the main lighting assembly includes: a lower light-transmitting plate for transmitting light outwards and a lower LED light strip as a light-emitting light source; the upper supplementary lighting assembly includes: an upper light-transmitting plate for supplementing light to the lower light-transmitting plate and an upper LED light strip as a light-emitting light source; the light emitted by the upper LED light strip passes through the upper light-transmitting plate and is transmitted outwards and irradiates the lower light-transmitting plate; the light emitted by the lower LED light strip and the light transmitted from the upper light-transmitting plate jointly pass through the lower light-transmitting plate and are transmitted outwards; the side supplementary lighting assembly includes: a side LED light strip; the lower LED light strip, the upper LED light strip, and the side LED light strip are all provided with a plurality of LED lights; the lower light-transmitting plate, the lower LED light strip, the upper light-transmitting plate, the upper LED light strip, and the side LED light strip are all mounted on the mounting frame; a length direction, a width direction, and a thickness direction are defined based on the lower light-transmitting plate; the size of the lower light-transmitting plate in the length direction is greater than the size in the thickness direction; the lower light-transmitting plate transmits light outwards along the thickness direction; the two upper supplementary lighting assemblies are located on the side of the lower light-transmitting plate away from the side where light is transmitted outwards in the thickness direction and the two upper supplementary lighting assemblies are respectively located at both ends of the lower light-transmitting plate in the length direction; the plurality of LED lights of the lower LED light strip are arranged along the length direction of the lower light-transmitting plate and the LED lights of the lower LED light strip face the side surface of the lower light-transmitting plate; the plurality of LED lights of the side LED light strip are arranged along the width direction of the lower light-transmitting plate, the two side LED light strips are respectively located on both sides of the lower light-transmitting plate in the length direction and the LED lights of the side LED light strip face the end surface of the lower light-transmitting plate; the plurality of LED lights of the upper LED light strip are arranged along the side surface of the upper light-transmitting plate and face the upper light-transmitting plate.

[0006] As a further embodiment of the present invention, the end faces of the two upper light-transmitting plates close to each other are arranged as arc surfaces; the arc surfaces form a long side surface and a short side surface on both sides of the upper light-transmitting plate in the width direction; the length of the long side surface is greater than the length of the short side surface; one end of the arc surface is smoothly connected to the short side surface, and the other end of the arc surface is connected to the long side surface.

[0007] As a further embodiment of the present invention, a plurality of LED lights of the upper LED light strip are arranged along the short side surface and the arc surface.

[0008] As a further embodiment of the present invention, the short side surface and the lower LED light strip are located on the same side of the upper light-transmitting plate in the width direction.

[0009] As a further embodiment of the present invention, a plurality of lateral refraction teeth for guiding light to refract to the side away from the arc surface are formed on the short side surface of the upper light-transmitting plate; each lateral refraction tooth corresponds to an LED light of the upper LED light strip; the lateral refraction teeth form a lateral refraction tooth front surface and a lateral refraction tooth back surface; the LED light corresponding to the lateral refraction tooth is aligned with the lateral refraction tooth front surface; the lateral refraction tooth front surface guides light to refract to the left; the light brightness passing through the lateral refraction tooth front surface is greater than the light brightness passing through the lateral refraction tooth back surface.

[0010] As a further embodiment of the present invention, the density of a plurality of LED lights of the upper LED light strip corresponding to the arc surface is greater than the density of a plurality of LED lights of the upper LED light strip corresponding to the short side surface.

[0011] As a further embodiment of the present invention, a left refraction area and a right refraction area are formed on the side of the lower light-transmitting plate facing the lower LED light strip; in the length direction, the left refraction area is located at the left end, and the right refraction area is located at the right end; the left refraction area is provided with a plurality of left refraction teeth; each left refraction tooth corresponds to an LED light of the lower LED light strip; the left refraction teeth form a left tooth refraction front surface and a left tooth refraction back surface; the center of the LED light corresponding to the left refraction area is aligned with the left tooth refraction front surface; the left tooth refraction front surface guides light to refract to the left; the light brightness passing through the left tooth refraction front surface is greater than the light brightness passing through the left tooth refraction back surface; the right refraction area is provided with a plurality of right refraction teeth; each right refraction tooth corresponds to an LED light of the lower LED light strip; the right refraction teeth form a right tooth refraction front surface and a right tooth refraction back surface; the center of the LED light corresponding to the right refraction area is aligned with the right tooth refraction front surface; the right tooth refraction front surface guides light to refract to the right; the light brightness passing through the right tooth refraction front surface is greater than the light brightness passing through the right tooth refraction back surface.

[0012] As a further embodiment of the present invention, the slope of the left tooth refraction front surface is gentler than that of the left tooth refraction back surface; the slope of the right tooth refraction front surface is gentler than that of the right tooth refraction back surface.

[0013] As a further embodiment of the present invention, a middle refraction area is further formed on the side of the lower light-transmitting plate facing the lower LED light strip; the middle refraction area is located between the left refraction area and the right refraction area; a plurality of middle refraction teeth are provided in the middle refraction area; the tooth shapes of the middle refraction teeth are symmetric about the left and right; the tooth gaps between two adjacent middle refraction teeth are aligned with one LED lamp of the lower LED light strip.

[0014] As a further embodiment of the present invention, the upper supplementary light assembly further includes: a partition frame; the lower light-transmitting plate is arranged parallel to the lower light-transmitting plate; the partition frame is arranged between the lower light-transmitting plate and the upper light-transmitting plate, so that a space gap is formed between the lower light-transmitting plate and the upper light-transmitting plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are: it has a better lighting effect. It has better brightness uniformity within a reasonable use area. In particular, it can solve the problem of reduced edge brightness. For a table lamp, better uniformity provides more eye protection and a better experience for users.

[0016] Due to the arrangement of the LED structure and the existence of the LED divergence angle, the brightness in the middle of the light converged in the lower light-transmitting plate is higher, and the brightness on both sides is relatively lower than that in the middle, resulting in a problem of poor brightness uniformity. By setting the upper supplementary light assembly and the side supplementary light assembly, the brightness uniformity of the lamp in the irradiation area is improved.

[0017] The brightness uniformity can be achieved within 1.1 in the 700mm * 500mm area. The smaller the uniformity value of the illumination area, the more effective it is to protect the human eye health and delay fatigue.

[0018] Other features and advantages of the present invention will be disclosed in detail in the following specific embodiments and the drawings. Brief Description of the Drawings

[0019] Figure 1 is a perspective view of the double-layer optical light-transmitting plate lighting structure of the embodiment of the present invention installed in a lamp housing; Figure 2 is Figure 1 the plan view of the structure in Figure 3 is a perspective view of the double-layer optical light-transmitting plate lighting structure of the embodiment of the present invention; Figure 4 Figure 3 the schematic diagram after removing the mounting bracket from the structure in Figure 5 is Figure 4 the exploded view of the structure in Figure 6 is Figure 5 the schematic diagram of the lower light-transmitting plate, side LED light strip and lower LED light strip in Figure 7 is Figure 5Schematic diagram of the upper light-transmitting plate and the upper LED light strip therein; Figure 8 is Figure 6 Partial enlarged view of location A in Figure 9 is Figure 6 Partial enlarged view of location B in Figure 10 is Figure 6 Partial enlarged view of location C in Figure 11 is Figure 7 Partial enlarged view of location D in Figure 12 Schematic diagram of the left refraction teeth and the middle refraction teeth of the present invention refracting light.

[0020] List of reference numerals: Double-layer optical light-transmitting plate lighting structure 100, mounting bracket 10, lamp housing 11, main lighting assembly 20, lower light-transmitting plate 21, left refraction teeth 212, left tooth refraction front surface 2121, left tooth refraction back surface 2122, right refraction teeth 213, right tooth refraction front surface 2131, right tooth refraction back surface 2132, middle refraction teeth 214, lower LED light strip 22, front light-shielding strip 23, back light-shielding plate 24, upper supplementary lighting assembly 30, upper light-transmitting plate 31, arc surface 311, long side surface 312, short side surface 313, lateral refraction teeth 314, side refraction tooth front surface 315, side refraction tooth back surface 316, upper LED light strip 32, partition frame 33, upper light-shielding back plate 34, upper light-shielding strip 35, side supplementary lighting assembly 40, side LED light strip 41. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] The double-layer optical light-transmitting plate lighting structure 100 is the core component for lighting. For example, in Figure 1 and Figure 2 the double-layer optical light-transmitting plate lighting structure 100 is installed in the lamp housing 11 and used as a lamp head.

[0023] Such as Figures 1 to 12As shown in the figure, the double-layer optical light-transmitting plate lighting structure 100 includes a main lighting component 20 and two upper supplementary lighting components 30. The main lighting component 20 includes a lower light-transmitting plate 21 for transmitting light outward and a lower LED light strip 22 as a light-emitting source. The upper supplementary lighting component 30 includes an upper light-transmitting plate 31 for supplementing light to the lower light-transmitting plate 21 and an upper LED light strip 32 as a light-emitting source. The light emitted by the upper LED light strip 32 is transmitted outward through the upper light-transmitting plate 31 and irradiates the lower light-transmitting plate 21. The light emitted by the lower LED light strip 22 and the light transmitted from the upper light-transmitting plate 31 are jointly transmitted outward through the lower light-transmitting plate 21.

[0024] As a preferred embodiment, the double-layer optical light-transmitting plate lighting structure 100 further includes a mounting frame 10 and two side supplementary lighting components 40. The side supplementary lighting component 40 includes a side LED light strip 41. The side supplementary lighting component 40 supplements light to the lower light-transmitting plate 21 from both sides. The lower LED light strip 22, the upper LED light strip 32, and the side LED light strip 41 are all provided with a plurality of LED lights. The lower light-transmitting plate 21, the lower LED light strip 22, the upper light-transmitting plate 31, the upper LED light strip 32, and the side LED light strip 41 are all mounted on the mounting frame 10.

[0025] Based on the lower light-transmitting plate 21, a length direction, a width direction, and a thickness direction are defined. The length direction, the width direction, and the thickness direction are perpendicular to each other. The dimension of the lower light-transmitting plate 21 in the length direction is greater than the dimension in the thickness direction. The lower light-transmitting plate 21 transmits light outward along the thickness direction. The two upper supplementary lighting components 30 are located on the side of the lower light-transmitting plate 21 away from the side where light is transmitted outward in the thickness direction, and the two upper supplementary lighting components 30 are respectively located at both ends of the lower light-transmitting plate 21 in the length direction.

[0026] The multiple LED lights of the lower LED light strip 22 are arranged along the length direction of the lower light-transmitting plate 21, and the LED lights of the lower LED light strip 22 face the side surface of the lower light-transmitting plate 21.

[0027] The multiple LED lights of the side LED light strip 41 are arranged along the width direction of the lower light-transmitting plate 21. The two side LED light strips 41 are respectively located on both sides of the lower light-transmitting plate 21 in the length direction, and the LED lights of the side LED light strip 41 face the end surface of the lower light-transmitting plate 21.

[0028] The multiple LED lights of the upper LED light strip 32 are arranged along the side surface of the upper light-transmitting plate 31 and face the upper light-transmitting plate 31.

[0029] Due to the divergence angle of the LED lamp, the light rays emitted by the LED lamp converge with each other within the lower light-transmitting plate 21 of the strip-shaped structure, resulting in a higher brightness in the middle and lower brightness at both ends of the lower light-transmitting plate 21. By providing the upper supplementary light assembly 30, the upper light-transmitting plate 31 can be used to achieve uniform supplementary light to both ends of the lower light-transmitting plate 21 as much as possible, reducing the problem of high brightness in the middle and low brightness at both ends when the lower light-transmitting plate 21 emits light alone. The provision of the side supplementary light assembly 40 also achieves the effect of supplementing light to both ends of the lower light-transmitting plate 21.

[0030] As a preferred embodiment, the end faces of the two upper light-transmitting plates 31 close to each other are provided with arc surfaces 311. The arc surface 311 forms long side faces 312 and short side faces 313 on both sides of the upper light-transmitting plate 31 in the width direction. The length of the long side face 312 is greater than the length of the short side face 313. One end of the arc surface 311 is smoothly connected to the short side face 313, and the other end of the arc surface 311 is connected to the long side face 312. Multiple LED lamps of the upper LED light strip 32 are arranged along the short side face 313 and the arc surface 311. This helps to improve the light-emitting effect of the upper light-transmitting plate 31, adapt to the lower light-transmitting plate 21, and solve the problem of low brightness at both ends of the lower light-transmitting plate 21. The density of multiple LED lamps of the upper LED light strip 32 corresponding to the arc surface 311 is greater than the density of multiple LED lamps of the upper LED light strip 32 corresponding to the short side face 313, making the ends of the upper light-transmitting plate 31 have higher brightness, further improving the light-emitting effect of the upper light-transmitting plate 31, adapting to the lower light-transmitting plate 21, and solving the problem of low brightness at both ends of the lower light-transmitting plate 21.

[0031] The ratio of the length to the width of the lower light-transmitting plate 21 is greater than or equal to 8:1 and less than or equal to 12:1.

[0032] As a preferred embodiment, the short side face 313 and the lower LED light strip 22 are located on the same side of the upper light-transmitting plate 31 in the width direction. Multiple lateral refraction teeth 314 for guiding light to refract away from the arc surface 311 are formed on the short side face 313 of the light-transmitting plate 31.

[0033] Each lateral refraction tooth 314 corresponds to an LED lamp of the upper LED light strip 32. The lateral refraction tooth 314 forms a lateral refraction tooth front face 315 and a lateral refraction tooth back face 316. The LED lamp corresponding to the lateral refraction tooth 314 is aligned with the lateral refraction tooth front face 315. The lateral refraction tooth front face 315 guides light to refract to the left. The light brightness passing through the lateral refraction tooth front face 315 is greater than the light brightness passing through the lateral refraction tooth back face 316. The setting of the lateral refraction tooth front face 315 enables more light to refract towards the ends, enhancing the brightness at the ends.

[0034] As a preferred embodiment, on the side of the lower light-transmitting plate 21 facing the lower LED light strip 22, a left refraction area and a right refraction area are formed. In the length direction, the left refraction area is located at the left end, and the right refraction area is located at the right end. The left refraction area guides the light to refract more towards the left end, and the right refraction area guides the light to refract more towards the right end.

[0035] The left refraction area is provided with a plurality of left refraction teeth 212. Each left refraction tooth 212 corresponds to an LED lamp of the lower LED light strip 22. The left refraction tooth 212 forms a left tooth refraction front surface 2121 and a left tooth refraction back surface 2122. The center of the LED lamp corresponding to the left refraction area is aligned with the front surface of the left refraction tooth 212. The front surface of the left refraction tooth 212 guides the light to refract towards the left side. The brightness of the light passing through the left tooth refraction front surface 2121 is greater than the brightness of the light passing through the left tooth refraction back surface 2122. The left tooth refraction front surface 2121 guides the light to refract more towards the left.

[0036] The right refraction area is provided with a plurality of right refraction teeth 213. Each right refraction tooth 213 corresponds to an LED lamp of the lower LED light strip 22. The right refraction tooth 213 forms a right tooth refraction front surface 2131 and a right tooth refraction back surface 2132. The center of the LED lamp corresponding to the right refraction area is aligned with the front surface of the right refraction tooth 213. The front surface of the right refraction tooth 213 guides the light to refract towards the right side. The brightness of the light passing through the right tooth refraction front surface 2131 is greater than the brightness of the light passing through the right tooth refraction back surface 2132. The right tooth refraction front surface 2131 guides the light to refract more towards the right.

[0037] Specifically, the slope of the front surface of the left refraction tooth 212 is gentler than that of the back surface of the left refraction tooth 212. The slope of the front surface of the right refraction tooth 213 is gentler than that of the back surface of the right refraction tooth 213.

[0038] As a preferred embodiment, on the side of the lower light-transmitting plate 21 facing the lower LED light strip 22, a middle refraction area is further formed. The middle refraction area is located between the left refraction area and the right refraction area. The middle refraction area is provided with a plurality of middle refraction teeth 214. The tooth shape of the middle refraction teeth 214 is symmetric left and right. The tooth gap between two adjacent middle refraction teeth 214 is aligned with an LED lamp of the lower LED light strip 22. The middle refraction teeth 214 guide the light to refract symmetrically to both sides.

[0039] As a preferred embodiment. The upper supplementary light assembly 30 further includes: a partition frame 33. The lower light-transmitting plate 21 is arranged parallel to the lower light-transmitting plate 21. The partition frame 33 is arranged between the lower light-transmitting plate 21 and the upper light-transmitting plate 31, so as to form a spatial gap between the lower light-transmitting plate 21 and the upper light-transmitting plate 31. In an interspersed manner, the light emission interference between the upper light-transmitting plate 31 and the lower light-transmitting plate 21 is reduced, so that the upper light-transmitting plate 31 can better emit light downward to the lower light-transmitting plate 21.

[0040] As a preferred embodiment, the main lighting assembly 20 further includes a front light-shielding strip 23. The front light-shielding strip 23 is located on the side of the lower light-transmitting plate 21 that emits light outward in the thickness direction. The front light-shielding strip 23 is located on the side of the lower light-transmitting plate 21 away from the upper light-transmitting plate 31. The front light-shielding strip 23 shields the middle refraction teeth 214, the left refraction teeth 212, and the right refraction teeth 213 of the lower light-transmitting plate 21. The front light-shielding strip 23 prevents light leakage from the tooth gaps between the middle refraction teeth 214, the left refraction teeth 212, and the right refraction teeth 213.

[0041] As a preferred embodiment, an upper light-shielding back plate 34 is provided on the side of the upper light-transmitting plate 31 away from the lower light-transmitting plate 21. The upper light-shielding back plate 34 covers the upper light-transmitting plate 31. The upper light-shielding back plate 34 can prevent backside light leakage, and a reflective structure can be provided to reflect light.

[0042] As a preferred embodiment, an upper light-shielding strip 35 is provided on the side of the upper light-transmitting plate 31 close to the lower light-transmitting plate 21. The upper light-shielding strip 35 covers the lateral refraction teeth 314. The upper light-shielding strip 35 prevents light leakage from the tooth gaps between the lateral refraction teeth 314.

[0043] As a preferred embodiment, the main lighting assembly 20 further includes a back light-shielding plate 24. The back light-shielding plate 24 is located on the side of the lower light-transmitting plate 21 close to the upper light-transmitting plate 31. The back light-shielding plate 24 covers the area of the lower light-transmitting plate 21 that is not covered by the upper light-transmitting plate 31. The back light-shielding plate 24 can prevent backside light leakage, and a reflective structure can be provided to reflect light.

[0044] As a preferred embodiment, the partition frame 33 forms a light-transmitting window for the upper light-transmitting plate 31 to transmit light to the lower light-transmitting plate 21. The partition frame 33 is a closed ring. The partition frame 33 encloses an area for the upper light-transmitting plate 31 to transmit light to the lower light-transmitting plate 21. The partition frame 33 spaces the upper light-transmitting plate 31 and the lower light-transmitting plate 21 apart, reducing the light-emitting interference between the upper light-transmitting plate 31 and the lower light-transmitting plate 21, and enabling the upper light-transmitting plate 31 to better emit light downward to the lower light-transmitting plate 21. The partition frame 33 can also block light leakage to the periphery.

[0045] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0046] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A double-layer optical light-transmitting plate lighting structure (100), characterized in that, Comprising: A mounting bracket (10), a main lighting component (20), two upper supplementary lighting components (30), and two side supplementary lighting components (40); The main lighting component (20) includes: a lower light-transmitting plate (21) for transmitting light outward and a lower LED light strip (22) as a light-emitting light source; The upper supplementary lighting component (30) includes: an upper light-transmitting plate (31) for supplementing light to the lower light-transmitting plate (21) and an upper LED light strip (32) as a light-emitting light source; the light emitted by the upper LED light strip (32) is transmitted outward through the upper light-transmitting plate (31) and irradiates the lower light-transmitting plate (21); the light emitted by the lower LED light strip (22) and the light transmitted from the upper light-transmitting plate (31) are jointly transmitted outward through the lower light-transmitting plate (21); The side supplementary lighting component (40) includes: a side LED light strip (41); a plurality of LED lights are provided on the lower LED light strip (22), the upper LED light strip (32), and the side LED light strip (41); the lower light-transmitting plate (21), the lower LED light strip (22), the upper light-transmitting plate (31), the upper LED light strip (32), and the side LED light strip (41) are all mounted on the mounting bracket (10); Based on the lower light-transmitting plate (21), a length direction, a width direction, and a thickness direction are defined; the size of the lower light-transmitting plate (21) in the length direction is greater than the size in the thickness direction; the lower light-transmitting plate (21) transmits light outward along the thickness direction; the two upper supplementary lighting components (30) are located on the side of the lower light-transmitting plate (21) away from the side where light is transmitted outward in the thickness direction, and the two upper supplementary lighting components (30) are respectively located at both ends of the lower light-transmitting plate (21) in the length direction; The plurality of LED lights of the lower LED light strip (22) are arranged along the length direction of the lower light-transmitting plate (21), and the LED lights of the lower LED light strip (22) face the side surface of the lower light-transmitting plate (21); The plurality of LED lights of the side LED light strip (41) are arranged along the width direction of the lower light-transmitting plate (21), the two side LED light strips (41) are respectively located on both sides of the lower light-transmitting plate (21) in the length direction, and the LED lights of the side LED light strip (41) face the end surface of the lower light-transmitting plate (21); The plurality of LED lights of the upper LED light strip (32) are arranged along the side surface of the upper light-transmitting plate (31) and face the upper light-transmitting plate (31).

2. The double-layer optical light-transmitting plate lighting structure (100) according to claim 1, wherein The end faces of the two upper light-transmitting plates (31) close to each other are arranged as arc surfaces (311); the arc surfaces (311) form long side faces (312) and short side faces (313) on both sides of the upper light-transmitting plates (31) in the width direction; the length of the long side faces (312) is greater than the length of the short side faces (313); one end of the arc surface (311) is smoothly connected to the short side face (313), and the other end of the arc surface (311) is connected to the long side face (312).

3. The double-layer optical light-transmitting plate lighting structure (100) according to claim 2, characterized in that The multiple LED lights of the upper LED light strip (32) are arranged along the short side face (313) and the arc surface (311).

4. The double-layer optical light-transmitting plate lighting structure (100) according to claim 3, characterized in that The short side face (313) and the lower LED light strip (22) are located on the same side of the upper light-transmitting plate (31) in the width direction.

5. The double-layer optical light-transmitting plate lighting structure (100) according to claim 3, characterized in that A plurality of lateral refraction teeth (314) for guiding light to refract to the side away from the arc surface (311) are formed on the short side face (313) of the upper light-transmitting plate (31); each lateral refraction tooth (314) corresponds to an LED light of the upper LED light strip (32); the lateral refraction teeth (314) form a front side of the lateral refraction teeth (315) and a back side of the lateral refraction teeth (316); the LED light corresponding to the lateral refraction tooth (314) is aligned with the front side of the lateral refraction tooth (315); the front side of the lateral refraction tooth (315) guides light to refract to the left; the light brightness passing through the front side of the lateral refraction tooth (315) is greater than the light brightness passing through the back side of the lateral refraction tooth (316).

6. The double-layer optical light-transmitting plate lighting structure (100) according to claim 5, characterized in that The density of the multiple LED lights of the upper LED light strip (32) corresponding to the arc surface (311) is greater than the density of the multiple LED lights of the upper LED light strip (32) corresponding to the short side face (313).

7. The double-layer optical light-transmitting plate lighting structure (100) according to claim 1, characterized in that A left refraction area and a right refraction area are formed on the side of the lower light-transmitting plate (21) facing the lower LED light strip (22). In the length direction, the left refraction area is located at the left end, and the right refraction area is located at the right end; the left refraction area is provided with a plurality of left refraction teeth (212); each left refraction tooth (212) corresponds to an LED lamp of the lower LED light strip (22); the left refraction tooth (212) forms a left tooth refraction front surface (2121) and a left tooth refraction back surface (2122); the center of the LED lamp corresponding to the left refraction area is aligned with the front surface of the left refraction tooth (212); the front surface of the left refraction tooth (212) guides the light to refract to the left; the light brightness passing through the left tooth refraction front surface (2121) is greater than the light brightness passing through the left tooth refraction back surface (2122). The right refraction area is provided with a plurality of right refraction teeth (213); each right refraction tooth (213) corresponds to an LED lamp of the lower LED light strip (22); the right refraction tooth (213) forms a right tooth refraction front surface (2131) and a right tooth refraction back surface (2132); the center of the LED lamp corresponding to the right refraction area is aligned with the front surface of the right refraction tooth (213); the front surface of the right refraction tooth (213) guides the light to refract to the right; the light brightness passing through the right tooth refraction front surface (2131) is greater than the light brightness passing through the right tooth refraction back surface (2132).

8. A double-layer optical light-transmitting plate lighting structure (100) according to claim 7, wherein the slope of the front surface of the left refraction tooth (212) is gentler than that of the back surface of the left refraction tooth (212); the slope of the front surface of the right refraction tooth (213) is gentler than that of the back surface of the right refraction tooth (213).

9. A double-layer optical light-transmitting plate lighting structure (100) according to claim 7, wherein a middle refraction area is further formed on the side of the lower light-transmitting plate (21) facing the lower LED light strip (22); the middle refraction area is located between the left refraction area and the right refraction area; the middle refraction area is provided with a plurality of middle refraction teeth (214); the tooth shapes of the middle refraction teeth (214) are symmetric about the left and right; the tooth gaps between two adjacent middle refraction teeth (214) are aligned with an LED lamp of the lower LED light strip (22).

10. A double-layer optical light-transmitting plate lighting structure (100) according to claim 1, wherein the upper supplementary light assembly (30) further includes: a partition frame (33); the partition frame (33) is arranged parallel to the lower light-transmitting plate (21); the partition frame (33) is arranged between the lower light-transmitting plate (21) and the upper light-transmitting plate (31) to form a space gap between the lower light-transmitting plate (21) and the upper light-transmitting plate (31).

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