Large area light source device

Abstract

The utility model relates to the technical fields of light source disclose a big area light source device, including base, lamp plate, diffusion plate, a plurality of adapter seat and a plurality of tensioning piece, the lamp plate is fixed on the base, the diffusion plate is set up in the lamp plate one side of back to the base, the light emitting path of lamp plate is towards the diffusion plate, each edge of diffusion plate all is fixed with adapter seat, the base is provided with limit groove on at least two opposite inner sides, and at least two opposite adapter seat is embedded to two limit groove one to one, and the width of limit groove and the thickness of adapter seat are adapted, each outer side of base all is connected with tensioning piece, and the tensioning piece is connected with corresponding one adapter seat and exerts the force of pointing to the outside to adapter seat, the application solves the technical problem that the diffusion plate of appearance bigger light source device collapses and leads to the poor light emitting uniformity.

Description

Technical Field

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

[0002] Currently, most light source devices include a diffuser plate along the light path of the lamp panel to ensure uniform illumination. However, typically only the edges of the diffuser plate are fixed during installation, with no central support. As the size of the light source device increases, the diffuser plate may sag in the middle due to its own weight, resulting in uneven light emission. This makes it unsuitable for machine vision inspection applications requiring a large illumination range and high uniformity. Therefore, improvements to existing light source devices are necessary. Utility Model Content

[0003] This utility model provides a large-area light source device, which mainly solves the technical problem of how to prevent the diffuser plate of a large light source device from collapsing, resulting in poor light emission uniformity.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A large-area light source device includes a base, a lamp plate, a diffuser plate, multiple adapter seats, and multiple tensioning members. The lamp plate is fixed to the base, and the diffuser plate is disposed on the side of the lamp plate facing away from the base, with the light emission path of the lamp plate facing the diffuser plate. Each edge of the diffuser plate is fixed with an adapter seat. The base has limiting grooves on at least two opposite inner surfaces, and at least two opposite adapter seats are embedded into the two limiting grooves in a one-to-one correspondence. The width of the limiting groove is adapted to the thickness of the adapter seat. Each outer surface of the base is connected to a tensioning member, and the tensioning member is connected to a corresponding adapter seat and applies an outward force to the adapter seat.

[0006] In one of the technical solutions, the adapter includes a separate first clamping block and a second clamping block, the first clamping block and the second clamping block together clamp the edge of the diffuser plate, the tensioning member is connected to the first clamping block or the second clamping block, and applies an outward force to the first clamping block or the second clamping block.

[0007] In one technical solution, the first clamping block and the second clamping block clamp the edge of the diffuser plate by connecting the first screw.

[0008] In one of the technical solutions, each edge of the diffuser plate is provided with a through first hole, the first clamping block is provided with a second through hole communicating with a corresponding first through hole, the second clamping block is provided with a first threaded hole communicating with a corresponding first through hole, and the first screw passes through the second through hole and the first through hole in sequence and is connected to the first threaded hole.

[0009] In one of the technical solutions, the tensioning member is a tensioning screw, and each outer side of the base is provided with a screw hole. The adapter is provided with a second threaded hole, and the tensioning member passes through the screw hole and is connected to the second threaded hole.

[0010] In one of the technical solutions, the base plate and the plurality of side plates are all aluminum plate structures, and the base plate is locked together with the side plates from a first direction, the first direction being the direction in which the base plate points to the diffuser plate.

[0011] In one technical solution, the base includes a base plate and multiple side plates. The lamp plate is fixed to the base plate, and the multiple side plates are fixed to the base plate and together surround the periphery of the lamp plate. Each side plate has a limiting groove on its inner side, and all the limiting grooves together form a ring structure. All the adapters on the periphery are embedded into the corresponding limiting grooves, and each side plate has a tensioning member connected to its outer side.

[0012] In one of the technical solutions, a cable is connected to the lamp panel, and at least one of the side panels is provided with a through clearance hole, through which the cable extends outward.

[0013] Compared with the prior art, the large-area light source device provided by this utility model has at least the following beneficial effects:

[0014] This solution pre-fixes an adapter at each edge of the diffuser plate. It also utilizes tensioning components connected to the outer surface of the base to connect the corresponding adapters and apply an outward force to them. This causes each edge of the diffuser plate to have an outward tendency to move, ensuring the entire diffuser plate is taut. This solves the problem of the central area sagging due to the large size of the diffuser plate, thereby improving the uniformity of light emission from larger light sources. Furthermore, this solution includes at least two limiting grooves, with the width of the grooves designed to match the thickness of the adapters. Two corresponding adapters are embedded into the two limiting grooves, thus restricting the position of the diffuser plate. This ensures that the diffuser plate has good flatness after its edges are pulled outward, allowing for more uniform outward illumination from the light source. In summary, this solution is beneficial for meeting the needs of machine vision inspection applications requiring a large illumination range and high uniformity of illumination. Attached Figure Description

[0015] 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.

[0016] Figure 1 This is a schematic diagram of a large-area light source device provided in an embodiment of this application;

[0017] Figure 2 A cross-sectional view of a large-area light source device provided in an embodiment of this application;

[0018] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0019] Figure 4 This is an exploded view of a large-area light source device provided in an embodiment of this application.

[0020] Figure label:

[0021] 1. Base; 11. Base plate; 12. Side plate; 121. Limiting groove; 122. Screw hole; 123. Clearance hole; 2. Light board; 21. Cable; 3. Diffuser plate; 31. First through hole; 4. Adapter; 41. First clamping block; 411. Second through hole; 42. Second clamping block; 421. First threaded hole; 422. Second threaded hole; 5. Tensioner; 6. First screw. Detailed Implementation

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] Please refer to the following: Figures 1 to 4 This utility model embodiment provides a large-area light source device, mainly including a base 1, a lamp plate 2, a diffuser plate 3, multiple adapter seats 4, and multiple tensioning members 5. The lamp plate 2 is fixed on the base 1, which is preferably an aluminum plate with good heat dissipation performance. The diffuser plate 3 is set on the side of the lamp plate 2 facing away from the base 1, and the light emission path of the lamp plate 2 faces the diffuser plate 3, so that after the lamp plate 2 emits light, it can be evenly illuminated to the outside after diffuse reflection by the diffuser plate 3. Each edge of the diffuser plate 3 is fixed with the aforementioned adapter seat 4. In this embodiment, the diffuser plate 3 is preferably square, so each of the four edges of the diffuser plate 3 is fixed with an adapter seat 4. The base 1 is provided with limiting grooves 121 on at least two opposite inner sides. At least two opposite adapter seats 4 are embedded into the two limiting grooves 121 one by one, and the width T of the limiting groove 121 is adapted to the thickness of the adapter seat 4. Each outer side of the base 1 is connected with a tensioning member 5, which is connected to a corresponding adapter seat 4 and applies an outward force to the adapter seat 4.

[0028] Specifically, this solution pre-fixes an adapter 4 to each edge of the diffuser plate 3. It also utilizes a tensioning member 5 connected to the outer surface of the base 1 to connect the corresponding adapter 4 and apply an outward force to the adapter 4, causing each edge of the diffuser plate 3 to have an outward movement tendency. This ensures the entire diffuser plate 3 is kept taut, thus solving the problem of the central area collapsing due to the large size of the diffuser plate 3, thereby improving the uniformity of light emission from the larger light source device. Furthermore, this solution includes at least two limiting grooves 121, with the width of the limiting grooves 121 designed to match the thickness of the adapter 4. Two corresponding adapters 4 are embedded into the two limiting grooves 121, thus restricting the position of the diffuser plate 3. This ensures that the diffuser plate 3 has better flatness after each edge is pulled outward, thereby ensuring that the light source device can emit light more uniformly. In summary, this solution is beneficial for meeting the needs of machine vision inspection applications with a large supplementary lighting range and high requirements for supplementary lighting uniformity.

[0029] Please refer to the following: Figures 2 to 4 The adapter 4 specifically includes a first clamping block 41 and a second clamping block 42 that are separately connected. The first clamping block 41 and the second clamping block 42 together clamp the edge of the diffuser plate 3. In fact, both the first clamping block 41 and the second clamping block 42 are embedded in the aforementioned limiting groove 121. The aforementioned tensioning member 5 is actually connected to the first clamping block 41 or the second clamping block 42, and actually applies an outward force to the first clamping block 41 or the second clamping block 42. By designing the adapter 4 as two separate components, it is convenient to realize the function of fixing the adapter 4 to the edge of the diffuser plate 3 by clamping.

[0030] Preferably, please refer to the following again. Figures 2 to 4 The first clamping block 41 and the second clamping block 42 clamp the edge of the diffuser plate 3 by connecting the first screw 6. Specifically, each edge of the diffuser plate 3 is provided with a through hole 31. The first clamping block 41 is provided with a second through hole 411 that communicates with a corresponding first through hole 31. The second clamping block 42 is provided with a first threaded hole 421 that communicates with a corresponding first through hole 31. During installation, the first screw 6 is passed through the second through hole 411 and the first through hole 31 in sequence and then screwed into the first threaded hole 421, so that the first clamping block 41 and the second clamping block 42 can jointly clamp the diffuser plate 3.

[0031] In this embodiment, the tensioning member 5 is preferably a tension screw; in other embodiments, the tensioning member 5 can also be a tension spring. For details, please refer again. Figures 2 to 4Each outer surface of the base 1 is provided with a through screw hole 122, and the side of the second clamping block 42 of the adapter 4 is provided with a second threaded hole 422. During installation, the tensioning member 5 passes through the screw hole 122 and connects to the second threaded hole 422. At this time, the tensioning member 5 can pull the adapter 4 outward to make the edge of the diffuser plate 3 pull outward.

[0032] Please refer to them again. Figures 1 to 4 The base 1 specifically includes a base plate 11 and multiple side plates 12. The aforementioned lamp plate 2 is fixed to the base plate 11, and the multiple side plates 12 are fixed to the base plate 11 and together surround the periphery of the lamp plate 2. The inner surface of each side plate 12 is provided with the aforementioned limiting groove 121, and all the limiting grooves 121 together form a ring structure. In fact, the outer surface of each side plate 12 is connected to the aforementioned tensioning member 5. By designing the base 1 as multiple separate components, it is easier to process and reduce processing costs, especially to facilitate the processing of each limiting groove 121 on the inner surface. All the peripheral adapters 4 are embedded into a corresponding limiting groove 121. Taking this embodiment as an example, the base 1 is a square structure including four side plates 12. Correspondingly, there are also four adapters 4. The four adapters 4 are embedded into the limiting grooves 121 on the inner side of each side plate 12. Through this design, the diffuser plate 3 can maintain a good flatness under the restriction of each limiting groove 121 during the process of being pulled outward, further improving the uniformity of the light emitted by the lamp plate 2 after being diffused by the diffuser plate 3. Preferably, the base plate 11 and all the side plates 12 are aluminum plate structures with good heat dissipation performance. The base plate 11 is preferably flexible. Figure 3 The first direction Z shown is locked together with the side plate 12, wherein the first direction Z is the direction from the bottom plate 11 to the diffuser plate 3. Preferably, the side plate 12 is provided with a through clearance hole 123, which is used to allow the cable 21 on the lamp board 2 to pass outward. The cable 21 can be a power line or a signal line.

[0033] 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 large-area light source device, characterized in that, The device includes a base, a light panel, a diffuser plate, multiple adapter seats, and multiple tensioning members. The light panel is fixed to the base, and the diffuser plate is located on the side of the light panel facing away from the base, with the light emission path of the light panel facing the diffuser plate. Each edge of the diffuser plate is fixed with an adapter seat. The base has limiting grooves on at least two opposite inner surfaces, and at least two opposite adapter seats are embedded into the two limiting grooves in a one-to-one correspondence. The width of the limiting groove is adapted to the thickness of the adapter seat. Each outer surface of the base is connected to a tensioning member, which is connected to a corresponding adapter seat and applies an outward force to the adapter seat.

2. The large-area light source device as described in claim 1, characterized in that, The adapter includes a separate first clamping block and a second clamping block. The first clamping block and the second clamping block together clamp the edge of the diffuser plate. The tensioning member is connected to the first clamping block or the second clamping block, and applies an outward force to the first clamping block or the second clamping block.

3. The large-area light source device as described in claim 2, characterized in that, The first clamping block and the second clamping block clamp the edge of the diffuser plate by connecting the first screw.

4. The large-area light source device as described in claim 3, characterized in that, Each edge of the diffuser plate is provided with a through first hole, the first clamping block is provided with a second through hole communicating with a corresponding first through hole, the second clamping block is provided with a first threaded hole communicating with a corresponding first through hole, and the first screw passes through the second through hole and the first through hole in sequence and is connected to the first threaded hole.

5. The large-area light source device as described in claim 1, characterized in that, The tensioning component is a tensioning screw. Each outer side of the base is provided with a screw hole. The adapter is provided with a second threaded hole. The tensioning component passes through the screw hole and is connected to the second threaded hole.

6. The large-area light source device as described in claim 1, characterized in that, The base includes a base plate and multiple side plates. The lamp plate is fixed to the base plate, and the multiple side plates are fixed to the base plate and together surround the periphery of the lamp plate. Each side plate has a limiting groove on its inner side, and all the limiting grooves together form a ring structure. All the adapters on the periphery are embedded into the corresponding limiting grooves, and each side plate has a tensioning member connected to its outer side.

7. The large-area light source device as described in claim 6, characterized in that, The base plate and the multiple side plates are all aluminum plate structures. The base plate is locked together with the side plates in a first direction, which is the direction from the base plate to the diffuser plate.

8. The large-area light source device as described in claim 6, characterized in that, The light panel is connected to a cable, and at least one of the side panels is provided with a through clearance hole, through which the cable extends outward.

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