Sheet type light guide medium and digital display device

Abstract

The utility model discloses a sheet-type light guide medium and a digital display device, which comprise a sheet-type medium with a light-transmitting characteristic and a fence main body with a light-proof characteristic, and the sheet-type medium and the fence main body are configured to form an integrated structure through bijection injection molding. According to the utility model, the light-transmitting sheet-type medium and the light-proof fence main body are integrally formed by the bijection injection molding process, so that no joint gap is formed between the sheet-type medium and the fence main body.

Description

Technical Field

[0001] This utility model relates to the field of digital display device technology, specifically to a thin-film light guide medium and a digital display device. Background Technology

[0002] As attached Figure 4 As shown, an existing digital display device has a thin-film light guide medium composed of a barrier body 1' and a light-transmitting sheet medium 2'. The barrier body 1' is made of black foam, making it opaque. Several embedding slots 11' are sequentially formed on the barrier body 1', and each sheet medium 2' is embedded and fixed in its corresponding embedding slot 11'. However, the barrier body 1' and the sheet medium 2' are separate components. During assembly, due to processing precision issues, the embedding slots 11' of the barrier body 1' and the sheet medium 2' may not fit tightly together, resulting in noticeable gaps at the joints and light leakage defects. Furthermore, each sheet medium 2' needs to be assembled into its corresponding embedding slot 11' individually, making the assembly process cumbersome and inefficient. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a thin-film light-guiding medium, in which the light-transmitting film medium and the opaque enclosure body are integrally formed by a double-shot injection molding process, achieving seamless connection between the film medium and the enclosure body.

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

[0005] A sheet-type light guide medium includes a sheet medium with light-transmitting properties and a barrier body with light-blocking properties, wherein the sheet medium and the barrier body are configured to form an integral structure by double injection molding.

[0006] Furthermore, the sheet medium is a sheet medium made of transparent PC material.

[0007] Furthermore, the main body of the fence is made of opaque PC material.

[0008] Based on the same inventive concept, this utility model also provides a digital display device, including a diaphragm, a printed circuit board, and any of the above-described thin-film light guide media, wherein the diaphragm and the printed circuit board are respectively fixed on the upper and lower sides of the thin-film light guide media, and the printed circuit board is provided with a plurality of LED light sources and driving circuits / touch circuits, and each LED light source is respectively arranged corresponding to each sheet of media on the thin-film light guide media.

[0009] Furthermore, the printed circuit board and the main body of the thin-film light guide medium are fixedly connected by mechanical riveting or screw locking.

[0010] Further, the sheet type light guide medium has a thickness of 1mm-3mm, the film sheet has a thickness of 0.1mm-0.3mm, and the printed board has a thickness of 0.8mm-1.6mm.

[0011] The above technical solution has the following advantages or beneficial effects:

[0012] In the sheet type light guide medium and the digital display device, the sheet type medium and the enclosure main body are integrally formed through a double-shot injection molding process. On the one hand, the complicated assembly process of the existing split type structure can be omitted to improve the production efficiency, and the product structure is uniform, the positioning is accurate, the display position accuracy is high, the inter-board connection design is not needed, and the electrical design is simplified. On the other hand, the sheet type medium and the enclosure main body are integrally formed, which can effectively avoid the joint gap problem caused by the split type assembly, reduce the light loss as much as possible to ensure the light efficiency, and the sealing performance is good because of the absence of the joint gap. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a schematic diagram of the digital display device of the embodiment of the utility model.

[0014] Figure 2 is a schematic diagram of the digital display device of the embodiment of the utility model.

[0015] Figure 3 is a schematic diagram of the digital display device of the embodiment of the utility model.

[0016] Figure 4 is a schematic diagram of the digital display device of the embodiment of the utility model.

[0017] Label explanation:

[0018] 1, sheet type light guide medium, 11, sheet type medium, 12, enclosure main body, 2, film sheet, 3, printed board. DETAILED DESCRIPTION

[0019] The utility model will be further described below in combination with the drawings and embodiments.

[0020] In the description of the utility model, it is understood that the terms "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0021] Please refer to the drawingsFigure 1 To the attached Figure 3 In an embodiment of the utility model, a sheet type light guide medium is provided, comprising sheet type medium 11 with light transmission characteristics and surrounding body 12 with non-light transmission characteristics, sheet type medium 11 and surrounding body 12 are configured to form integrated structure by double-shot injection molding. It can be understood that in the embodiment, sheet type medium 11 and surrounding body 12 are integrally formed by double-shot injection molding process, on the one hand, the cumbersome process of assembling each sheet type medium 11 to surrounding body 12 in multiple times can be saved to improve production efficiency, and the product structure is uniform, the positioning is accurate, the display position precision is high, the interboard connection design is not needed, and the electrical design is simplified, on the other hand, sheet type medium 11 and surrounding body 12 are integrally formed, the joint gap problem caused by split assembly can be effectively avoided, the light output loss is reduced as far as possible to ensure the light output efficiency, and the sealing performance is good because of no joint gap. In addition, since sheet type medium 11 and surrounding body 12 are integrally formed by double-shot injection molding process, sheet type medium 11 can be used for curved surface design, the shape and structure have greater self-defined space, and special-shaped light guide medium structures such as curved surface and spherical surface can be realized, which are not restricted by planar sheet type material.

[0022] Please refer to the attached Figure 1 To the attached Figure 3 In a preferred embodiment, sheet type medium 11 is sheet type medium of light transmission PC (polycarbonate plastic) material. Surrounding body 12 is surrounding body of non-light transmission PC material. Preferably, sheet type medium 11 is made of light transmission PC material with light transmission rate of more than 90%. And surrounding body 12 is made of non-light transmission PC material with as low light transmission rate as possible, preferably non-light transmission PC material with zero light transmission rate.

[0023] Please refer to the attached Figure 1 To the attached Figure 3 In an embodiment of the utility model, a sheet type light guide medium is provided, comprising sheet type medium 11 with light transmission characteristics and surrounding body 12 with non-light transmission characteristics, sheet type medium 11 and surrounding body 12 are configured to form integrated structure by double-shot injection molding. It can be understood that in the embodiment, sheet type medium 11 and surrounding body 12 are integrally formed by double-shot injection molding process, on the one hand, the cumbersome process of assembling each sheet type medium 11 to surrounding body 12 in multiple times can be saved to improve production efficiency, and the product structure is uniform, the positioning is accurate, the display position precision is high, the interboard connection design is not needed, and the electrical design is simplified, on the other hand, sheet type medium 11 and surrounding body 12 are integrally formed, the joint gap problem caused by split assembly can be effectively avoided, the light output loss is reduced as far as possible to ensure the light output efficiency, and the sealing performance is good because of no joint gap. In addition, since sheet type medium 11 and surrounding body 12 are integrally formed by double-shot injection molding process, sheet type medium 11 can be used for curved surface design, the shape and structure have greater self-defined space, and special-shaped light guide medium structures such as curved surface and spherical surface can be realized, which are not restricted by planar sheet type material.

[0024] Please refer to the attached Figure 1 To the attached Figure 3In a preferred embodiment, the printed board 3 is fixedly connected with the surrounding body 12 of the sheet light guide medium 1 by mechanical riveting or screw locking. Since the surrounding body 12 of the prior art is usually made of foam material, the fixing between the surrounding body 12 of foam material and the printed board 3 is prone to delamination. In the embodiment, since the surrounding body 12 is made of PC material, it can be stably and firmly fixed with the printed board 3 by mechanical riveting or screw locking, which is beneficial to improve the assembly stability of the product.

[0025] Please refer to the accompanying drawings Figure 1 to the accompanying drawings Figure 3 In a preferred embodiment, the thickness of the sheet light guide medium 1 is 1mm-3mm, the thickness of the diaphragm 2 is 0.1mm-0.3mm, and the thickness of the printed board 3 is 0.8mm-1.6mm.

[0026] The above description is only used to illustrate the technical solutions of the present application, but not to limit it. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent ones. These modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application. Therefore, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

Claims

1. A thin-film light guiding medium, characterized in that: It includes a sheet medium (11) with light-transmitting properties and a fence body (12) with opaque properties, the sheet medium (11) and the fence body (12) being configured to form an integral structure by double injection molding.

2. The thin-film light guide medium according to claim 1, characterized in that: The sheet medium (11) is a sheet medium made of transparent PC material.

3. The thin-film light guide medium according to claim 1, characterized in that: The main body of the fence (12) is made of opaque PC material.

4. A digital display device, characterized in that: The light guide includes a diaphragm (2), a printed circuit board (3), and a thin-film light guide medium (1) as described in any one of claims 1 to 3, wherein the diaphragm (2) and the printed circuit board (3) are respectively fixed on the upper and lower sides of the thin-film light guide medium (1), and the printed circuit board (3) is provided with a plurality of LED light sources and driving circuits / touch circuits, and each LED light source is respectively provided with a corresponding sheet medium (11) on the thin-film light guide medium (1).

5. The digital display device according to claim 4, characterized in that: The printed circuit board (3) and the enclosure body (12) of the thin-film light guide medium (1) are fixedly connected by mechanical riveting or screw locking.

6. The digital display device according to claim 4, characterized in that: The thickness of the thin-film light guide medium (1) is 1mm to 3mm, the thickness of the film (2) is 0.1mm to 0.3mm, and the thickness of the printed circuit board (3) is 0.8mm to 1.6mm.

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