LED display plastic shell structure with waterproof performance

Abstract

This utility model discloses a waterproof LED display housing structure, including a housing with a sealing ring injection groove and a molded sealing ring fitted into the groove. This utility model replaces a separately installed sealing ring with a soft rubber sealing ring formed by two-stage injection molding, reducing assembly time and labor costs, ensuring the structural stability of the soft rubber sealing ring, eliminating the limitations imposed by irregularly shaped housings on the sealing ring, and improving the structural connection strength and inherent strength of the sealing ring.

Description

Technical Field

[0001] This utility model belongs to the field of LED displays and relates to LED display plastic shell structures, specifically to an LED display plastic shell structure with waterproof performance. Background Technology

[0002] With the development of intelligent technology, LED displays are being used more and more widely. For example, they are widely used in automobiles, home appliances, medical devices, and consumer electronics. The plastic shell is an important component of LED displays. It is mounted on the circuit board of the LED display and displays the information through the display window on the plastic shell.

[0003] In some usage scenarios, such as bathrooms, kitchens, and outdoors, a large amount of moisture often accumulates on the plastic casing. To prevent this moisture from contacting the circuit board and causing internal components to become damp, resulting in short circuits, a good waterproof seal is required between the plastic casing and the circuit board. The existing method involves adding a sealing ring at the joint between the plastic casing and the circuit board to prevent moisture ingress. However, this method has several drawbacks in practice, as follows:

[0004] 1. The sealing ring needs to be installed separately later, which is time-consuming and labor-intensive, increasing assembly time and labor costs;

[0005] 2. The sealing performance is not stable because the sealing ring is installed independently and its bonding strength with the plastic shell is not ideal. The sealing ring is prone to leakage due to misalignment or compression, which affects the waterproof performance.

[0006] 3. For irregularly shaped plastic shells, it is difficult to find matching sealing rings, which greatly limits the use of irregularly shaped plastic shells;

[0007] 4. Sealing rings are easily affected by the external environment and external forces, which can cause deformation and damage. This results in a shorter service life for the sealing rings, requiring timely replacement and increasing costs. Summary of the Invention

[0008] Purpose of the invention: In order to overcome the many shortcomings of the existing independent sealing ring method, a waterproof LED display plastic shell structure is provided.

[0009] Technical solution: To achieve the above objectives, this utility model provides a waterproof LED display plastic shell structure, including a plastic shell, on which a sealing ring injection groove and an injection-molded sealing ring fitted in the sealing ring injection groove are provided.

[0010] Furthermore, the injection-molded sealing ring is a soft rubber sealing ring.

[0011] Furthermore, the soft rubber sealing ring is a sealing ring formed by secondary injection molding.

[0012] Furthermore, the soft rubber sealing ring is injection molded and bonded to the sealing ring injection groove.

[0013] Beneficial effects: Compared with the prior art, this utility model replaces the independently installed sealing ring with a soft rubber sealing ring formed by secondary injection molding, which has the following advantages:

[0014] 1. It can directly complete the injection molding of soft rubber sealing rings during the injection molding of plastic shells, eliminating the need for subsequent sealing ring installation, thus reducing assembly time and labor costs.

[0015] 2. Because the soft rubber sealing ring is formed by secondary injection molding, the bonding strength between the soft rubber sealing ring and the plastic shell is very high, which ensures the structural stability of the soft rubber sealing ring and prevents leakage due to misalignment or compression, thus ensuring the continuity of waterproof performance.

[0016] 3. Since the soft rubber sealing ring is formed by secondary injection molding, the limitation of irregularly shaped plastic shells on the sealing ring is eliminated, thereby expanding the application range of irregularly shaped plastic shells.

[0017] 4. The soft rubber sealing ring can maintain a tight connection with the injection molding groove of the sealing ring, which greatly improves the structural connection strength and its own strength. It is not easy to deform or be damaged, thus greatly extending the service life of the sealing ring and reducing cost. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the back of the plastic casing;

[0019] Figure 2 This is a side view of the plastic housing.

[0020] Figure 3 This is a three-dimensional structural diagram of the plastic shell;

[0021] Figure 4 A side view of the plastic shell after secondary injection molding;

[0022] Figure 5 This is a three-dimensional structural diagram of the plastic shell after secondary injection molding. Detailed Implementation

[0023] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0024] like Figures 1-5 As shown, this utility model provides a waterproof LED display plastic shell structure, including a plastic shell 1, a sealing ring injection groove 2 and an injection-molded sealing ring 3 that fits on the sealing ring injection groove 2. The injection-molded sealing ring 3 is a soft rubber sealing ring, which is formed by secondary injection molding. The soft rubber sealing ring is injection-molded and bonded to the sealing ring injection groove 2.

[0025] In this embodiment, the LED display shell structure is formed through two injection molding processes, namely, primary injection molding and secondary injection molding, as detailed below:

[0026] One-time injection molding: The plastic shell 1 is formed in the mold cavity through the injection molding process, as shown in the figure. Figures 1-3 The plastic housing 1 is provided with a sealing ring injection groove 2, which is pre-designed according to the structure of the plastic housing 1;

[0027] Secondary injection molding: Based on the primary injection molding, a secondary injection molding process is performed, injecting the soft plastic (TPE) into the sealing ring injection groove 2 to form the injection sealing ring 3. The final LED display shell structure is as follows. Figure 4 and Figure 5 As shown.

[0028] Compared with the existing independently sealed plastic shell structure, the LED display shell structure obtained in this embodiment has the following advantages:

[0029] 1. It can directly complete the injection molding of soft rubber sealing rings during the injection molding of plastic shells, eliminating the need for subsequent sealing ring installation, thus reducing assembly time and labor costs.

[0030] 2. Because the soft rubber sealing ring is formed by secondary injection molding, the bonding strength between the soft rubber sealing ring and the plastic shell 1 is very high, which ensures the structural stability of the soft rubber sealing ring and prevents leakage due to misalignment or compression of the soft rubber sealing ring, thus ensuring the continuity of waterproof performance.

[0031] 3. Since the soft rubber sealing ring is formed by secondary injection molding, the limitation of irregularly shaped plastic shells on the sealing ring is eliminated, thereby expanding the application range of irregularly shaped plastic shells.

[0032] 4. The soft rubber sealing ring can maintain a tight connection with the sealing ring injection groove 2, which greatly improves the structural connection strength and self-strength of the sealing ring, making it less prone to deformation and damage, thus significantly extending the service life of the sealing ring and reducing cost.

Claims

1. A plastic housing structure of LED display with waterproof performance, comprising a plastic housing body, characterized in that, The plastic shell is provided with a sealing ring injection groove and an injection sealing ring matched in the sealing ring injection groove.

2. The LED display plastic shell structure with waterproof performance according to claim 1, characterized in that, The injection sealing ring is a soft glue sealing ring.

3. The LED display plastic shell structure with waterproof performance according to claim 2, characterized in that, The soft glue sealing ring is a sealing ring formed by secondary injection.

4. The LED display plastic shell structure with waterproof performance according to claim 3, characterized in that, The soft glue sealing ring is injection bonded and fixed on the sealing ring injection groove.

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