Backlight module and remote controller comprising same

Abstract

The utility model provides a backlight module and a remote controller comprising the same, relates to the technical field of remote controllers, and solves the technical problems of incapability of automatic assembly and light leakage. The backlight module comprises a light guide plate, a circuit board, LED lamp beads, a shading device and a light blocking assembly. The LED lamp beads are reversely attached to the circuit board in a patch mode and transmit light downwards through the light holes. Light inlet holes are formed in the positions, corresponding to the LED lamp beads, of the light guide plate; the shading device is arranged on the light guide plate; the light blocking assembly is arranged among the light guide plate, the circuit board and the LED lamp beads. According to the utility model, the assembly efficiency of the remote controller backlight source is improved in a manner of realizing automation by separating the SMD LED lamp beads from the light guide plate, and meanwhile, the aim of preventing light leakage of the remote controller backlight source is fulfilled by adopting the light blocking component and the light shading component.

Description

Technical Field

[0001] This utility model relates to the field of remote control technology, and in particular to a backlight module and a remote control containing the same. Background Technology

[0002] Most backlight modules in commercially available remote controls integrate the backlight's light guide plate with the LED light source, directly soldering it onto the circuit board via an insertion method to achieve the backlight effect. This method, due to technological limitations, cannot be installed using automated insertion equipment, resulting in low production efficiency and high costs. Furthermore, if the backlight malfunctions, the entire integrated light guide plate must be replaced, increasing after-sales maintenance costs. Additionally, because remote controls are small and have gaps in their structure, the backlight may leak light near the edges of the structure.

[0003] To address the issue that traditional light guide plate backlights cannot be assembled using automated equipment, existing technologies employ a method of reverse-mounting LED beads through holes in the circuit board. However, this structure results in unreasonable light leakage from the bottom of the remote control, leading to a poor user experience with the backlight.

[0004] The applicant has discovered that the prior art has at least the following technical problems: the traditional light guide plate backlight of the remote control in the prior art cannot be assembled using automated equipment, and there is a light leakage problem.

[0005] Therefore, it is necessary to develop a remote control backlight module that is easy to automate production and after-sales service, while also providing a uniform backlight effect without light leakage or other poor user experience. Utility Model Content

[0006] The purpose of this utility model is to provide a backlight module and a remote control containing the same, so as to solve the technical problems of non-automatic assembly and light leakage in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] This utility model provides a backlight module, including a light guide plate, a circuit board, LED beads, a light-shielding device, and a light-blocking assembly; wherein:

[0009] The LED beads are attached to the circuit board in a patch form and transmit light downwards through the light-transmitting holes.

[0010] The light guide plate has light-entry holes corresponding to the positions of the LED beads; the;

[0011] The light-shielding device is disposed on the light guide plate;

[0012] The light-blocking component is disposed between the light guide plate, the circuit board, and the LED beads.

[0013] The backlight module provided by this utility model improves the assembly efficiency of the remote control backlight by separating the surface-mount LED beads from the light guide plate to achieve automation. At the same time, it uses light-blocking components and light-shielding parts to prevent light leakage from the remote control backlight, thus solving the problems of the inability to automate the assembly of traditional remote control backlights and the poor user experience caused by light leakage.

[0014] As a further improvement of this utility model, the light-shielding device includes a white reflective film and a silver reflective film; the white reflective film is disposed on the side of the light guide plate facing the circuit board; the silver reflective film is disposed on the side of the light guide plate.

[0015] By setting a white reflective film on the side of the light guide plate facing the circuit board and a silver reflective film on the side edge of the light guide plate, the light-blocking effect is achieved, reducing the leakage of light source from one side and the side edge of the light guide plate.

[0016] As a further improvement of this utility model, the light-blocking component includes a white reflective film adhesive. One end of the white reflective film adhesive is fixed to the side of the light guide plate, and the other end is folded over and pressed onto the LED beads and connected to the circuit board.

[0017] By setting a white reflective film adhesive, which is fixed to the side of the light guide plate, the white reflective film adhesive can be folded. During assembly, the circuit board of the remote control is placed on the light guide plate. After the white reflective film adhesive is folded, it completely covers the LED beads on the circuit board. The reflective film adhesive can also be pasted on the circuit board to prevent the reflective film from lifting or falling off. The light-blocking component formed by the reflective film adhesive can not only prevent light transmission, but also maximize the introduction of LED light source into the light guide plate, realize the maximum utilization of the backlight source of the remote control, and solve the problem of light transmission in the bottom shell or light leakage in the edge gaps of the structural assembly.

[0018] As another improvement of this utility model, the light-blocking component includes a light-blocking sponge, one end of which is located above the side of the light guide plate and the other end is located above the circuit board, so that it can cover the edge of the light guide plate and the LED beads when pressed.

[0019] The light-blocking component of this utility model can also use light-blocking sponge. Black sponge has the function of absorbing light and is soft. When the remote control is assembled, the black light-blocking sponge can tightly wrap the LED beads and the sides of the circuit board. Therefore, it can solve the problem of light transmission in the bottom shell of the remote control backlight or light leakage in the edge gaps of the structural assembly, which greatly improves the user experience. Since the black light-blocking sponge can be pre-installed in the bottom shell of the remote control, the automated installation of the remote control backlight can be guaranteed in actual production.

[0020] As a further improvement of this utility model, the light-blocking sponge is made of black sponge.

[0021] As a further improvement of this utility model, the length of the white reflective film adhesive is greater than the length between the two ends of the light inlet hole.

[0022] As a further improvement of this utility model, a diffusion film is provided on the other side of the light guide plate.

[0023] As a further improvement of this utility model, the LED beads are fixed on the circuit board by reflow soldering.

[0024] The present invention provides a remote control comprising a front shell, a bottom shell, and a backlight module disposed within the front shell and the bottom shell, which are interlocked together.

[0025] As a further improvement of this utility model, the inner side of the bottom shell near the LED bead is made of a dark material, or the entire bottom shell is made of a dark material.

[0026] As a further improvement of this utility model, the thickness of the bottom shell near the LED bead is greater than the thickness of the bottom shell at other locations; or, the overall thickness of the bottom shell is greater than the thickness of the top shell.

[0027] The remote control of this utility model achieves automated installation of the backlight through surface-mount LED beads and a peelable light guide plate, effectively improving production efficiency. The assembly method is flexible and simple, improving after-sales maintenance efficiency. The light guide through the light blocking component and the light shielding component effectively avoids backlight leakage and improves backlight uniformity. Attached Figure Description

[0028] 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.

[0029] Figure 1 This is a three-dimensional structural diagram of the light guide plate in the backlight module of this utility model;

[0030] Figure 2 This is a bottom view of the light guide plate in the backlight module of this utility model;

[0031] Figure 3 This is a top view of the remote control of this utility model when the front cover and backlight module are installed together;

[0032] Figure 4This is a schematic diagram of the structure of the bottom shell of one embodiment of the remote control of this utility model;

[0033] Figure 5 This is a schematic diagram of the circuit board structure in the backlight module of this utility model.

[0034] In the diagram: 1. Light guide plate; 11. White reflective film; 12. Diffuser film; 13. Silver reflective film; 14. Light inlet hole; 2. Circuit board; 21. Light transmission hole; 3. White reflective film adhesive; 4. LED beads; 5. Front shell; 51. Rib; 52. Liquid crystal conductive adhesive strip; 6. Bottom shell; 7. Light blocking sponge. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0036] Example 1:

[0037] like Figure 1 and Figure 2 As shown, this utility model provides a backlight module for embedding in a remote control; specifically, the backlight module includes a light guide plate 1 and a circuit board 2 (attached). Figure 1 and Figure 2 (not shown in the image), 4 LED beads, 4 light-shielding devices, and 4 light-blocking components; wherein:

[0038] The LED beads 4 are mounted face-up on the circuit board 2 and transmit light downwards through the light-transmitting holes 21; during installation, the circuit board 2 is attached above the light guide plate 1; it should be noted that the up and down direction referred to here means as... Figure 1 From a mid-range perspective, such as... Figure 1 The upper surface of the light guide plate 1 is attached to the circuit board 2; light-transmitting holes are opened on the circuit board 2 corresponding to the positions of the LED beads 4, such as... Figure 5 As shown, it should be noted that the size of the light-transmitting hole should be larger than that of the LED lamp bead 4 to avoid blocking the light.

[0039] A light inlet hole 14 is provided on the light guide plate 1 corresponding to the position of the LED lamp bead 4; the light of the LED lamp bead 4 enters the light guide plate 1 through the light inlet hole 14 and is then diffused by the light guide plate 1 to form a uniform backlight state.

[0040] A light-shielding device is disposed on the light guide plate 1 to block the light from the LED beads 4;

[0041] A light-blocking component is placed between the light guide plate 1, the circuit board 2, and the LED beads 4 to prevent light leakage from gaps and other areas.

[0042] The backlight module provided by this utility model improves the assembly efficiency of the remote control backlight by separating the surface-mount LED beads 4 from the light guide plate 1 in an automated manner. At the same time, it uses light-blocking components and light-shielding parts to prevent light leakage from the remote control backlight, thus solving the problems of the inability to automate the assembly of traditional remote control backlights and the poor user experience caused by light leakage.

[0043] As an optional embodiment of this utility model, such as Figure 1 As shown, the light-shielding device includes a white reflective film 11 and a silver reflective film 13; the white reflective film 11 is disposed on the side of the light guide plate 1 facing the circuit board 2; the silver reflective film 13 is disposed on the side of the light guide plate 1.

[0044] It should be noted that both the white reflective film 11 and the silver reflective film 13 are made using existing technology materials. This utility model does not improve the film raw materials, so it will not be described in detail.

[0045] In addition, to ensure good light-blocking effect, the silver reflective film 13 is set on all sides of the light guide plate 1, and is set on the entire side; the white reflective film 11 is set on the entire top surface of the light guide plate 1.

[0046] By setting a white reflective film 11 on the side of the light guide plate 1 facing the circuit board 2 and setting a silver reflective film 13 on the side of the light guide plate 1, the light blocking effect is achieved, reducing the leakage of light source from one side and the side of the light guide plate 1.

[0047] As an optional embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the light-blocking component includes a white reflective film adhesive 3. One end of the white reflective film adhesive 3 is fixed to the side of the light guide plate 1, and the other end is folded over and pressed onto the LED bead 4 and connected to the circuit board 2.

[0048] Specifically, to facilitate automated assembly and installation efficiency, the white reflective film adhesive 3 has adhesive on the side facing the LED bead 4, which can wrap the LED bead 4 after folding and then stick it to the surface of the circuit board 2.

[0049] By setting a white reflective film adhesive 3, which is fixed to the side of the light guide plate 1, the white reflective film adhesive 3 can be folded. During assembly, the circuit board 2 of the remote control is placed on the light guide plate 1. After the white reflective film adhesive 3 is folded, it completely covers the LED beads 4 on the circuit board 2. The reflective film adhesive can also be pasted on the circuit board 2 to prevent the reflective film from lifting or falling off. The light-blocking component formed by the reflective film adhesive can not only prevent light transmission, but also maximize the introduction of the light source of the LED beads 4 into the light guide plate 1, thereby maximizing the utilization of the backlight source of the remote control and solving the problem of light transmission in the bottom shell 6 or light leakage in the edge gaps of the structural assembly.

[0050] As another optional embodiment of this utility model, such as Figure 4 As shown, the light-blocking component includes a light-blocking sponge 7. During installation, one end of the light-blocking sponge 7 is located above the side of the light guide plate 1, which is above the side of the circuit board 2. The other end of the light-blocking sponge 7 is located directly above the circuit board 2 and inside the LED bead 4. During installation, the light-blocking sponge 7 can cover the edge of the light guide plate 1 and the LED bead 4 when it is pressed, thereby forming a light-blocking effect and preventing light leakage from the gaps.

[0051] The light-blocking component of this utility model can also use a light-blocking sponge 7. The black sponge has the function of absorbing light and is soft. When the remote control is assembled, the black light-blocking sponge 7 can tightly wrap the LED beads 4 and the side of the circuit board 2. Therefore, it can solve the problem of light transmission in the bottom shell 6 of the remote control backlight or light leakage in the edge gaps of the structural assembly, which greatly improves the user experience. Since the black light-blocking sponge 7 can be pre-installed in the bottom shell 6 of the remote control, the automated installation of the remote control backlight can be guaranteed in actual production.

[0052] As a further improvement of this utility model, the light-blocking sponge 7 is made of black sponge.

[0053] It should be noted that either the light-blocking sponge 7 or the white reflective film adhesive 3 can be used alone or simultaneously.

[0054] To further improve the light leakage prevention effect, such as Figure 1 and Figure 3 As shown, the length of the white reflective film adhesive 3 is greater than the length between the two ends of the light inlet aperture 14. It should be noted that the length referred to here is... Figure 3 Specifications in the top and bottom directions.

[0055] like Figure 2 As shown, as a further improvement of this utility model, in order to improve the light diffusion effect, a diffusion film 12 is provided on the other side of the light guide plate 1.

[0056] It should be noted that, as Figure 2As shown, the diffusion film 12 is only set in the middle position where the cross-section lines are drawn on both sides. Since this side position is a light-transmitting area, the diffusion film 12 is set there. The positions where the cross-section lines are drawn on both sides are the light-blocking areas of the light plate 1. The light-blocking areas can be made of light-blocking materials or coated with light-blocking materials. Considering that the two sides are light-blocking, the diffusion film 12 is not set in the light-blocking areas.

[0057] It should be noted that since the light guide plate 1 is separate from the LED beads 4, there is no need to consider the problem that the light guide plate 1 is not resistant to high temperature. Therefore, in this embodiment, the LED beads 4 are fixed on the circuit board 2 by reflow soldering.

[0058] Example 2:

[0059] like Figures 1-5 As shown, the present invention provides a remote control including a front shell 5, a bottom shell 6 that are interlocked together, and a backlight module disposed in the front shell 5 and the bottom shell 6.

[0060] Specifically, the backlight module includes a light guide plate 1 and a circuit board 2 (attached). Figure 1 and Figure 2 (not shown in the image), 4 LED beads, 4 light-shielding devices, and 4 light-blocking components; wherein:

[0061] The LED beads 4 are mounted face-up on the circuit board 2 and transmit light downwards through the light-transmitting holes 21; during installation, the circuit board 2 is attached above the light guide plate 1; it should be noted that the up and down direction referred to here means as... Figure 1 From a mid-range perspective, such as... Figure 1 The upper surface of the light guide plate 1 is attached to the circuit board 2; light-transmitting holes are opened on the circuit board 2 corresponding to the positions of the LED beads 4, such as... Figure 5 As shown, it should be noted that the size of the light-transmitting hole should be larger than that of the LED lamp bead 4 to avoid blocking the light.

[0062] The light generated by LED bead 4 serves as the light source for the remote control; the light source passes through... Figure 1 The light inlet 14 with a textured surface evenly enters the interior of the light guide plate 1. The white reflective film 11 on the upper surface of the light guide plate 1 and the silver reflective film 13 on the side wall both have the effect of blocking light, so the light source will not leak out from these places. The lower surface is a diffuser film 12, which can evenly scatter the light source to the remote control LCD, forming a uniformly distributed backlight effect.

[0063] A light inlet hole 14 is provided on the light guide plate 1 corresponding to the position of the LED lamp bead 4; the light of the LED lamp bead 4 enters the light guide plate 1 through the light inlet hole 14 and is then diffused by the light guide plate 1 to form a uniform backlight state.

[0064] A light-shielding device is disposed on the light guide plate 1 to block the light from the LED beads 4;

[0065] A light-blocking component is placed between the light guide plate 1, the circuit board 2, and the LED beads 4 to prevent light leakage from gaps and other areas.

[0066] The backlight module provided by this utility model improves the assembly efficiency of the remote control backlight by separating the surface-mount LED beads 4 from the light guide plate 1 in an automated manner. At the same time, it uses light-blocking components and light-shielding parts to prevent light leakage from the remote control backlight, thus solving the problems of the inability to automate the assembly of traditional remote control backlights and the poor user experience caused by light leakage.

[0067] As an optional embodiment of this utility model, such as Figure 1 As shown, the light-shielding device includes a white reflective film 11 and a silver reflective film 13; the white reflective film 11 is disposed on the side of the light guide plate 1 facing the circuit board 2; the silver reflective film 13 is disposed on the side of the light guide plate 1.

[0068] It should be noted that both the white reflective film 11 and the silver reflective film 13 are made using existing technology materials. This utility model does not improve the film raw materials, so it will not be described in detail.

[0069] In addition, to ensure good light-blocking effect, the silver reflective film 13 is set on all sides of the light guide plate 1, and is set on the entire side; the white reflective film 11 is set on the entire top surface of the light guide plate 1.

[0070] By setting a white reflective film 11 on the side of the light guide plate 1 facing the circuit board 2 and setting a silver reflective film 13 on the side of the light guide plate 1, the light blocking effect is achieved, reducing the leakage of light source from one side and the side of the light guide plate 1.

[0071] As an optional embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the light-blocking component includes a white reflective film adhesive 3. One end of the white reflective film adhesive 3 is fixed to the side of the light guide plate 1, and the other end is folded over and pressed onto the LED bead 4 and connected to the circuit board 2.

[0072] Specifically, to facilitate automated assembly and installation efficiency, the white reflective film adhesive 3 has adhesive on the side facing the LED bead 4, which can wrap the LED bead 4 after folding and then stick it to the surface of the circuit board 2.

[0073] By setting a white reflective film adhesive 3, which is fixed to the side of the light guide plate 1, the white reflective film adhesive 3 can be folded. During assembly, the circuit board 2 of the remote control is placed on the light guide plate 1. After the white reflective film adhesive 3 is folded, it completely covers the LED beads 4 on the circuit board 2. The reflective film adhesive can also be pasted on the circuit board 2 to prevent the reflective film from lifting or falling off. The light-blocking component formed by the reflective film adhesive can not only prevent light transmission, but also maximize the introduction of the light source of the LED beads 4 into the light guide plate 1, thereby maximizing the utilization of the backlight source of the remote control and solving the problem of light transmission in the bottom shell 6 or light leakage in the edge gaps of the structural assembly.

[0074] As another optional embodiment of this utility model, such as Figure 4 As shown, the light-blocking component includes a light-blocking sponge 7. During installation, one end of the light-blocking sponge 7 is located above the side of the light guide plate 1, which is above the side of the circuit board 2. The other end of the light-blocking sponge 7 is located directly above the circuit board 2 and inside the LED bead 4. During installation, the light-blocking sponge 7 can cover the edge of the light guide plate 1 and the LED bead 4 when it is pressed, thereby forming a light-blocking effect and preventing light leakage from the gaps.

[0075] The light-blocking component of this utility model can also use a light-blocking sponge 7. The black sponge has the function of absorbing light and is soft. When the remote control is assembled, the black light-blocking sponge 7 can tightly wrap the LED beads 4 and the side of the circuit board 2. Therefore, it can solve the problem of light transmission in the bottom shell 6 of the remote control backlight or light leakage in the edge gaps of the structural assembly, which greatly improves the user experience. Since the black light-blocking sponge 7 can be pre-installed in the bottom shell 6 of the remote control, the automated installation of the remote control backlight can be guaranteed in actual production.

[0076] As a further improvement of this utility model, the light-blocking sponge 7 is made of black sponge.

[0077] It should be noted that either the light-blocking sponge 7 or the white reflective film adhesive 3 can be used alone or simultaneously.

[0078] To further improve the light leakage prevention effect, such as Figure 1 and Figure 3 As shown, the length of the white reflective film adhesive 3 is greater than the length between the two ends of the light inlet aperture 14. It should be noted that the length referred to here is... Figure 3 Specifications in the top and bottom directions.

[0079] like Figure 2 As shown, as a further improvement of this utility model, in order to improve the light diffusion effect, a diffusion film 12 is provided on the other side of the light guide plate 1.

[0080] It should be noted that, as Figure 2As shown, the diffusion film 12 is only set in the middle position where the cross-section lines are drawn on both sides. Since this side position is a light-transmitting area, the diffusion film 12 is set there. The positions where the cross-section lines are drawn on both sides are the light-blocking areas of the light plate 1. The light-blocking areas can be made of light-blocking materials or coated with light-blocking materials. Considering that the two sides are light-blocking, the diffusion film 12 is not set in the light-blocking areas.

[0081] It should be noted that since the light guide plate 1 is separate from the LED beads 4, there is no need to consider the problem that the light guide plate 1 is not resistant to high temperature. Therefore, in this embodiment, the LED beads 4 are fixed on the circuit board 2 by reflow soldering.

[0082] Although the white reflective film 11 and the silver reflective film 13 can block the light and emit as much backlight as possible to the remote control's LCD, at the light inlet 14, because the backlight LED bead 4 is mounted backwards (i.e., after mounting, the bead faces downwards and emits light downwards), light transmission and leakage still occur around the circuit board 2. Therefore, a light-blocking component is needed; such as Figure 3 White reflective film adhesive sticker 3 and Figure 4 The black light-blocking sponge 7 in the picture are all light-blocking components. It should be emphasized that in actual applications, only one of the white reflective film adhesive 3 and black light-blocking sponge 7 needs to be used.

[0083] The white reflective film adhesive 3 is fixed to the side of the light guide plate 1, such as Figure 3 As shown; the white reflective film 11 is foldable, during assembly. Figure 5 The remote control circuit board 2 shown is placed in Figure 1 Above the light guide plate 1, a light-transmitting hole is opened in the middle of the LED bead 4 placement position on the circuit board 2 so that the LED bead 4 can be aligned downward through the light-transmitting hole with the light inlet hole 14 of the light guide plate 1. Then, the white reflective film adhesive 3 is folded and completely wrapped around the LED bead 4 attached to the circuit board 2. The inner surface of the white reflective film adhesive 3 after folding is adhesive, so it can be pasted on the circuit board 2 to prevent the white reflective film from lifting or falling off. The light-blocking component formed by the white reflective film adhesive 3 can not only prevent light transmission, but also maximize the introduction of the light source of the LED bead 4 into the light guide plate 1, realize the maximum utilization rate of the remote control backlight light source, and solve the problem of light transmission in the bottom shell 6 or light leakage in the edge gaps of the structural assembly.

[0084] Because the light guide plate 1 is separate from the LED beads 4, the LED beads 4 are soldered onto the circuit board 2 by reflow soldering. The light guide plate 1 is limited by the liquid crystal conductive adhesive strip 52 and the plate rib 51 in the face shell 5. The entire remote control backlight can be automatically installed. The reflective film adhesive is fixed to the side of the light guide plate 1 and is designed as an integral part of the light guide plate 1, which does not affect the automatic installation method of the backlight.

[0085] Furthermore, such as Figure 3As shown, the backlight module is fixed on the housing 5 by a rib 51 and a liquid crystal conductive adhesive strip 52. The rib 51 is positioned opposite each other to form a retaining plate portion inside, in which the light guide plate 1 is secured. The liquid crystal conductive adhesive strip 52 is positioned opposite each other and forms a rectangular retaining plate portion with the rib 51, in which the light guide plate 1 and the circuit board 2 are secured. It should be noted that... Figure 3 The white reflective film 3 is a structural diagram when it is not folded. The left end of the white reflective film 3 is attached to the side of the light guide plate 1. When the circuit board 2 and the light guide plate 1 are attached and stacked together, the white reflective film 3 can be folded upwards, and then wrapped around the LED lamp bead 4, the light inlet hole 14 and the light transmission hole before being pasted on the surface of the circuit board 2 to prevent light leakage.

[0086] As another optional embodiment of this utility model, the light-blocking component can also be adopted as follows: Figure 4 This is achieved as shown. Figure 4 The diagram shows another implementation of the light-blocking component. This component uses a black light-blocking sponge adhered to the curved surface of the remote control's bottom shell 6. When assembled on the remote control's front shell 5, the light-blocking sponge faces the light inlet of the light guide plate. The black light-blocking sponge absorbs light and is soft. After the remote control is assembled, the black light-blocking sponge 7 can tightly wrap around the LED beads 4 and the sides of the circuit board 2, thus solving the problem of light transmission in the bottom shell 6 or light leakage at the edges of the structural assembly, greatly improving the user experience. Because the black light-blocking sponge 7 can be pre-installed on the remote control's bottom shell 6, automated installation of the remote control's backlight can be ensured in actual production.

[0087] To further improve the light leakage prevention effect, in this embodiment, the inner side of the bottom shell 6 near the LED lamp bead 4 can be made of a dark material, or the entire bottom shell 6 can be made of a dark material.

[0088] To further improve the light leakage prevention effect, in this embodiment, the thickness of the bottom shell 6 near the LED bead 4 is greater than the thickness of other parts of the bottom shell 6; or, the overall thickness of the bottom shell 6 is greater than the thickness of the top shell 5.

[0089] It should be noted that either dark material or thickening can be used, or both can be set simultaneously.

[0090] The mid-light blocking component of this utility model can be made using methods other than sponge and white reflective film adhesive. For example, the bottom shell 6 of the remote control can be thickened and dark pigment can be added inside the shell. However, this method is complicated and adds extra cost to the production of the remote control. In addition, there is still a risk of light leakage from the gap between the front shell 5 and the bottom shell 6 of the remote control.

[0091] The remote control of this utility model achieves automated installation of the backlight through patch LED beads and a stripped light guide plate 1, which effectively improves production efficiency, has a flexible and simple assembly method, and improves after-sales maintenance efficiency; through the light-blocking component and the light-shielding component, it effectively avoids backlight leakage problems and improves backlight uniformity.

[0092] First, it should be noted that "inward" refers to the direction towards the center of the storage space, while "outward" refers to the direction away from the center of the storage space.

[0093] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing this utility model 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 utility model.

[0094] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0095] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0096] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0097] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0098] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A backlight module, characterized in that, Includes light guide plates, circuit boards, LED beads, light-shielding devices, and light-blocking components; among which: The LED beads are attached to the circuit board in a patch form and transmit light downwards through the light-transmitting holes. The light guide plate is provided with light-entry holes corresponding to the positions of the LED beads; The light-shielding device is disposed on the light guide plate; The light-blocking component is disposed between the light guide plate, the circuit board, and the LED beads.

2. The backlight module according to claim 1, characterized in that, The light-shielding device includes a white reflective film and a silver reflective film; the white reflective film is disposed on the side of the light guide plate facing the circuit board; the silver reflective film is disposed on the side of the light guide plate.

3. The backlight module according to claim 1, characterized in that, The light-blocking component includes a white reflective film adhesive. One end of the white reflective film adhesive is fixed to the side of the light guide plate, and the other end is folded over and pressed onto the LED beads and connected to the circuit board.

4. The backlight module according to claim 1 or 3, characterized in that, The light-blocking component includes a light-blocking sponge, one end of which is located above the side of the light guide plate and the other end is located above the circuit board, and can cover the edge of the light guide plate and the LED beads when pressed.

5. The backlight module according to claim 4, characterized in that, The light-blocking sponge is made of black sponge.

6. The backlight module according to claim 3, characterized in that, The length of the white reflective film adhesive is greater than the length between the two ends of the light inlet hole.

7. The backlight module according to claim 2, characterized in that, A diffusion film is provided on the other side of the light guide plate.

8. A remote control, characterized in that, It includes a front shell, a bottom shell, and a backlight module as described in any one of claims 1-7, which are interlocked together.

9. The remote control according to claim 8, characterized in that, The inner side of the bottom shell near the LED beads is made of a dark material, or the entire bottom shell is made of a dark material.

10. The remote control according to claim 8, characterized in that, The thickness of the bottom shell near the LED bead is greater than the thickness of the bottom shell at other locations; or, the overall thickness of the bottom shell is greater than the thickness of the top shell.

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