Thin edge face light source

Abstract

The utility model relates to the technical fields of light source disclose a kind of thin edge face light source, including bottom plate, lamp plate, diffusion plate and light shield cloth;The lamp plate is fixed on the bottom plate, the diffusion plate includes diffusion main body and multiple are bent and are collectively surrounded in the diffusion main body periphery relative to the bending part of diffusion main body, the diffusion main body is set to the side of the lamp plate away from the bottom plate, the light emitting path of the lamp plate is towards the diffusion main body, multiple the bending part is surrounded in the periphery of the lamp plate, and at least two the bending part of opposite position is fixedly connected with the side surface on the bottom plate, the light shield cloth is annular while being attached on the surface of all the bending part;The face light source designed in the application can reduce the weight of face light source while increasing the light emitting surface of light source.

Description

Technical Field

[0001] This utility model relates to the technical field of light sources, and in particular to a thin-edge surface light source. Background Technology

[0002] Most current surface light sources are designed with a base, a light panel, and a diffuser. The base has a mounting slot, which results in a thick, annular frame along the outer edge of the base. During installation, the light panel is fixed into the mounting slot, and then the diffuser and annular frame are secured to cover the opening of the mounting slot. In operation, the light panel emits light towards the diffuser, and the light emitted is diffused outwards evenly. However, due to the thick annular frame on the base, existing surface light sources suffer from a relatively small luminous area for a given light source size. In other words, current surface light sources cannot meet the requirements of both compact installation and a large luminous area. Furthermore, the base is usually made of a metal with good thermal conductivity, resulting in a heavier base and consequently, a heavier surface light source. Therefore, improvements to existing backlights are necessary.

[0003] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0004] This utility model provides a thin-edge surface light source, which mainly solves the technical problem of how to increase the light-emitting area of ​​the surface light source while reducing its weight when the external dimensions of the surface light source are fixed.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A thin-edge surface light source includes a base plate, a lamp plate, a diffuser plate, and a light-shielding cloth;

[0007] The lamp panel is fixed to the base plate. The diffuser plate includes a diffuser body and a plurality of bent portions that are bent relative to the diffuser body and together surround the diffuser body. The diffuser body is located on the side of the lamp panel facing away from the base plate. The light emission path of the lamp panel faces the diffuser body. The plurality of bent portions surround the periphery of the lamp panel, and at least two bent portions in relative positions are fixedly connected to the side of the base plate. The light-shielding cloth is in a ring shape and simultaneously adheres to the surface of all the bent portions.

[0008] In one of the technical solutions, the light-blocking cloth is a light-blocking adhesive cloth, and the first and last ends of the light-blocking cloth are bonded together to make the light-blocking cloth form a ring structure.

[0009] In one of the technical solutions, the light-blocking cloth is a black light-blocking adhesive cloth.

[0010] In one of the technical solutions, the thin-edge surface light source further includes a power supply line electrically connected to the lamp board, a first through hole is provided on one of the bent portions, and a second through hole communicating with the first through hole is provided at the position corresponding to the first through hole, and the power supply line passes outward from the first through hole and the second through hole in sequence.

[0011] In one of the technical solutions, the first through hole penetrates the bend in a direction away from the diffuser body, and the second through hole penetrates the light-shielding cloth in a direction away from the diffuser body.

[0012] In one of the technical solutions, all the bent portions are fixedly connected to multiple sides of the base plate in a one-to-one correspondence.

[0013] In one of the technical solutions, the base plate is square in shape, and the diffuser plate includes four bent portions, which are fixedly connected to the four sides of the base plate one by one.

[0014] In one of the technical solutions, each of the bending portions is provided with multiple countersunk screw holes, and each side of the base plate is provided with threaded holes at the positions corresponding to the screw holes, and the light-blocking cloth covers all the screw holes.

[0015] In one of the technical solutions, the base plate is an aluminum plate structure, and the vertical distance from the side of the base plate facing away from the diffusion body to the diffusion body is 20mm-25mm.

[0016] In one of the technical solutions, the thickness of the diffusion body and the thickness of the bending portion are both 1 mm.

[0017] Compared with the prior art, the thin-edge surface light source provided by this utility model has at least the following beneficial effects:

[0018] This solution redesigns the traditional sheet-like diffuser plate into a design comprising a diffuser body and multiple bends, with the bends fixed to the side of the base plate. This eliminates the need for mounting grooves for the lamp panel on the base plate, meaning a thick annular frame is no longer required. Therefore, this solution addresses side light leakage by using a ring-shaped light-shielding cloth attached to the surface of all the bends. The thickness of the side edge of the surface light source in this solution is actually the combined thickness of the bends of the diffuser plate and the light-shielding cloth. Since both the diffuser plate and the light-shielding cloth are relatively thin, the edges of the surface light source can be made very thin. This means that when the surface light source's dimensions are limited, the thin edges allow for a larger luminous area, meeting the needs of applications requiring both compact installation and a large luminous area. Furthermore, since the bends and light-shielding cloth are primarily made of plastic, this solution offers the advantage of being lighter compared to traditional surface light sources with metal annular frames. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This application provides a schematic diagram of the structure of a thin-edge surface light source according to an embodiment of the present application.

[0021] Figure 2 An exploded view of the structure of a thin-edge surface light source provided in an embodiment of this application;

[0022] Figure 3 An exploded view of a thin-edge surface light source provided in this application embodiment;

[0023] Figure 4 for Figure 3 The diagram shows an exploded view of a thin-edge surface light source from another angle.

[0024] Figure label:

[0025] 1. Base plate; 11. Side; 2. Lamp panel; 3. Diffuser plate; 31. Diffuser body; 32. Bending part; 321. First through hole; 322. Screw hole; 4. Light-shielding cloth; 41. First end; 42. End; 43. Second through hole; 5. Power supply line. Detailed Implementation

[0026] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0027] 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.

[0028] It should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0031] Please refer to the following: Figures 1 to 4This utility model embodiment provides a thin-edge surface light source, which mainly includes a base plate 1, a lamp plate 2, a diffuser plate 3, and a light-shielding cloth 4. The lamp plate 2 is fixed to the top surface of the base plate 1 and can be understood as a circuit board integrating multiple LED beads. The diffuser plate 3 is specifically designed to include a diffuser body 31 and multiple bent portions 32 that are bent relative to the diffuser body 31. In fact, the diffuser body 31 is formed into multiple bent portions 32 through hot pressing. These multiple bent portions 32 actually surround the periphery of the diffuser body 31. After the diffuser plate 3 is installed, the diffuser body 31 is located on the side of the lamp plate 2 facing away from the base plate 1, and the light emission path of the lamp plate 2 faces... The diffuser body 31 (i.e., the lamp panel 2 emits light with its back to the base plate 1) emits light that is diffused outwards by the diffuser plate 3. Multiple bends 32 are actually arranged around the lamp panel 2, and at least two bends 32 in opposite positions are fixedly connected to the side surface 11 of the base plate 1 to ensure that the diffuser plate 3 is fixed to the base plate 1. Preferably, all bends 32 are fixedly connected one-to-one to multiple side surfaces 11 of the base plate 1 to further improve the stability of the diffuser plate 3 on the base plate 1. This also helps prevent foreign objects or dust from entering the surface light source from the bends 32 and the side surfaces 11 of the base plate 1, improving the stability of the surface light source during long-term use. The light-shielding cloth 4 is ring-shaped and simultaneously attached to the surface of all bends 32 to shield the sides, allowing the light to be more concentrated and emitted outwards from the diffuser body 31.

[0032] Specifically, this solution redesigns the traditional sheet-like diffuser plate into one comprising a diffuser body 31 and multiple bent portions 32. The bent portions 32 are fixed to the side 11 of the base plate 1. This eliminates the need for mounting grooves for the lamp plate 2 on the base plate 1. In other words, the base plate 1 does not require a thick annular frame. Therefore, this solution addresses side light leakage by using a light-shielding cloth 4 that is annularly attached to the surface of all bent portions 32. The thickness of the side edge of the surface light source in this solution is actually the sum of the bent portions 32 of the diffuser plate 3 and the light-shielding cloth 4. The combined thickness of the diffuser plate 3 and the light-shielding cloth 4 is relatively thin. Therefore, the edges of the surface light source in this solution can be made very thin. That is, when the size of the surface light source is limited, the thin edges of this solution can free up more light-emitting area, which can meet the application scenarios that require installation in a compact space and a large light-emitting area. In addition, since the bending part 32 and the light-shielding cloth 4 of this solution are mostly made of plastic, the surface light source of this solution is also lighter than traditional surface light sources with metal ring frames.

[0033] Please see Figure 1In this embodiment, the vertical distance T from the side of the base plate 1 facing away from the diffuser body 31 (which can be understood as the bottom surface of the base plate 1) to the diffuser body 31 is preferably 20mm-25mm, giving the surface light source of this embodiment the advantage of being thin and light. In addition, the thickness of the diffuser plate 3 in this embodiment is preferably 1mm. In other words, after the diffuser plate 3 is hot-pressed to form the diffuser body 31 and multiple bends 32, the thickness of the diffuser body 31 and the thickness of the multiple bends 32 are actually both 1mm. The thickness of the light-shielding cloth 4 is negligible due to its small size. At this time, the thickness of each edge of the surface light source in this embodiment is approximately 1mm. Compared with the traditional thick annular frame, the edge thickness of the surface light source in this embodiment has the advantage of being extremely thin.

[0034] Please refer to the following: Figures 1 to 4 In this embodiment, the light-shielding cloth 4 is specifically designed as a light-shielding adhesive tape. During installation, simply glue the first end 41 and the last end 42 of the light-shielding adhesive tape together to form a ring-shaped light-shielding cloth 4. Thus, using light-shielding adhesive tape as the light-shielding cloth 4 has the advantages of simple structure and low cost. In addition, the light-shielding cloth 4 is preferably made of black light-shielding adhesive tape with excellent light-shielding effect.

[0035] Please refer to the following: Figures 1 to 4 The thin-edge surface light source in this embodiment also includes a power supply line 5. The power supply line 5 is pre-connected to the lamp board 2 to lead out the positive and negative terminals or signal lines of the lamp board 2, thereby facilitating the control of the working state of the lamp board 2. Based on the provision of the power supply line 5, this embodiment provides a first through hole 321 on one of the bends 32, and the light-shielding cloth 4 provides a second through hole 43 at the position corresponding to the first through hole 321. In fact, the second through hole 43 and the first through hole 321 are interconnected. By providing the first through hole 321 and the second through hole 43, the power supply line 5 can pass out from the first through hole 321 and the second through hole 43 in sequence, thereby enabling the power supply line 5 to be connected to an external power source. Furthermore, the first through hole 321 penetrates the bent portion 32 in a direction away from the diffuser body 31 (which can be understood as downward), and the second through hole 43 penetrates the light-shielding cloth 4 in a direction away from the diffuser body 31 (which can be understood as downward). Through this design, both the first through hole 321 and the second through hole 43 present a U-shaped hole structure, which allows the power supply line 5 to be avoided when the diffuser plate 3 is upside down on the base plate 1, reducing the installation difficulty of the diffuser plate 3. Similarly, it makes it easier for the light-shielding cloth 4 to avoid the power supply line 5 when it is glued, thus also helping to reduce the installation difficulty of the light-shielding cloth 4, and thus helping to improve the assembly efficiency of the surface light source.

[0036] Please refer to the following: Figures 1 to 4In this embodiment, the base plate 1 is preferably square in shape. Correspondingly, the diffuser plate 3 includes four of the aforementioned bent portions 32, which are fixedly connected to the four side surfaces 11 of the base plate 1 in a one-to-one correspondence. More specifically, each bent portion 32 is provided with multiple countersunk screw holes 322. Correspondingly, each side surface 11 of the base plate 1 is provided with a threaded hole (not shown in the figure) at the position of the corresponding screw hole 322. During installation, a tapered flathead screw can be passed through the screw hole 322 and screwed into the threaded hole of the side surface 11 of the base plate 1 to fix each bent portion 32 to the side surface 11 of the base plate 1. In addition, the aforementioned light-shielding cloth 4 actually covers all the screw holes 322 and flathead screws, so as to achieve side light shading while improving the aesthetics of the surface light source.

[0037] The above are merely preferred embodiments of the present utility model, and only specifically describe the technical principles of the present utility model. These descriptions are only for explaining the principles of the present utility model and should not be construed as limiting the scope of protection of the present utility model in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model, as well as other specific embodiments of the present utility model that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of the present utility model.

Claims

1. A thin-edge surface light source, characterized in that, Includes base plate, light panel, diffuser plate and light-shielding cloth; The lamp panel is fixed to the base plate. The diffuser plate includes a diffuser body and a plurality of bent portions that are bent relative to the diffuser body and together surround the diffuser body. The diffuser body is located on the side of the lamp panel facing away from the base plate. The light emission path of the lamp panel faces the diffuser body. The plurality of bent portions surround the periphery of the lamp panel, and at least two bent portions in relative positions are fixedly connected to the side of the base plate. The light-shielding cloth is in a ring shape and simultaneously adheres to the surface of all the bent portions.

2. The thin edge face light source according to claim 1, wherein The light-blocking cloth is a light-blocking adhesive cloth, and the first and last ends of the light-blocking cloth are glued together to form a ring structure.

3. The thin edge face light source according to claim 2, wherein The light-blocking cloth is black light-blocking adhesive tape.

4. The thin edge surface light source according to claim 1, wherein The thin-edge surface light source also includes a power supply line electrically connected to the lamp board. A first through hole is provided on one of the bent portions, and a second through hole communicating with the first through hole is provided at the position corresponding to the first through hole. The power supply line passes outward from the first through hole and the second through hole in sequence.

5. The thin edge face light source according to claim 4, wherein The first through hole penetrates the bend in a direction away from the diffuser body, and the second through hole penetrates the light-shielding cloth in a direction away from the diffuser body.

6. The thin edge face light source according to claim 1, wherein All the aforementioned bends are fixedly connected to the multiple sides of the base plate in a one-to-one correspondence.

7. The thin edge face light source according to claim 6, wherein The base plate is square in shape, and the diffuser plate includes four bent parts, which are fixedly connected to the four sides of the base plate one by one.

8. The thin edge face light source according to claim 7, wherein Each of the bending portions is provided with multiple countersunk screw holes, and each side of the base plate is provided with threaded holes at the positions corresponding to the screw holes. The light-blocking cloth covers all the screw holes.

9. The thin-edge surface light source as described in claim 1, characterized in that, The base plate is an aluminum plate structure, and the vertical distance from the side of the base plate facing away from the diffusion body to the diffusion body is 20mm-25mm.

10. The thin-edge surface light source as described in claim 1, characterized in that, The thickness of both the diffusion body and the bending portion is 1 mm.

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