Backlight module of liquid crystal display screen

Abstract

The utility model discloses a backlight module of a liquid crystal display screen, belongs to the technical field of backlight modules, and solves the problems that a first spring and a second spring of an existing device can rebound to continue to impact a backlight source after absorbing external impact through compression, and the protection effect is poor. The protection assembly comprises a first protection frame fixedly installed on the inner wall of the shell, rhombic grooves which are evenly distributed are formed in the side wall of the first protection frame in a penetrating mode, an aluminum plate is fixedly installed on the side wall of the first protection frame, and the backlight source is fixedly installed on the surface of the aluminum plate. A second protection frame with the L-shaped section is arranged on the face, away from the first protection frame, of the aluminum plate, impact force generated by collision can be absorbed through the second protection frame and the first protection frame, due to the fact that a rhombic groove is formed in the side wall of the first protection frame, the side wall of the first protection frame can deform, then the impact force is buffered, and the service life of the aluminum plate is prolonged. And the situation that the backlight source connecting line falls off due to overlarge impact force is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of backlight modules, in particular to a backlight module for a liquid crystal display screen. Background Art

[0002] The display screen is mainly composed of a screen and a backlight module. The main function of the backlight module is to supply sufficient and evenly distributed light so that the display screen can display images normally.

[0003] After searching, the application with patent application number CN202222574369.6 discloses a backlight module for a liquid crystal display screen, including a rectangular mounting plate and a reflective sheet, a light guide plate and an optical film that can be installed inside the rectangular mounting plate, the reflective sheet, the light guide plate and the optical film are arranged in sequence from bottom to top, light bars are arranged on both sides of the light guide plate, a transverse positioning groove is provided on the top of the rectangular mounting plate, a deep positioning bayonet is provided at the center of the bottom of the inner wall of the transverse positioning groove, shallow positioning bayonet are provided at the bottom of the inner wall of the transverse positioning groove and on both sides of the deep positioning bayonet, first positioning blocks are fixedly connected to both sides of the reflective sheet, three second positioning blocks are fixedly connected to both sides of the light guide plate, and positioning plates are fixedly connected to both sides of the optical film;

[0004] Although the liquid crystal display backlight module uses spring 1 and spring 2 in cooperation to buffer the impact force on the backlight source and ensure that the connection parts of the backlight source will not be detached, the spring 1 and spring 2 used in the liquid crystal display backlight module will rebound and continue to impact the backlight source after absorbing the external impact through compression, and the protection effect is poor.

[0005] Therefore, we propose a liquid crystal display backlight module. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a backlight module for a liquid crystal display screen, which solves the problem that the springs 1 and 2 of the prior device will rebound and continue to impact the backlight source after absorbing external impact through compression, resulting in poor protection effect.

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a liquid crystal display backlight module, including a shell, a backlight source is arranged inside the shell, and an outer frame is arranged on the side of the shell;

[0008] A protective component is disposed inside the housing;

[0009] The protection component includes a first protection frame fixedly mounted on the inner wall of the outer shell, the side wall of the first protection frame is penetrated with evenly distributed diamond grooves, the side wall of the first protection frame is fixedly mounted with an aluminum plate, the backlight source is fixedly mounted on the surface of the aluminum plate, and a second protection frame with an "L"-shaped cross-section is provided on a side of the aluminum plate away from the first protection frame, the surface of the second protection frame is in contact with the inner wall of the outer shell, and the aluminum plate is movably mounted inside the second protection frame.

[0010] Preferably, a glass sheet is fixedly mounted on the inner wall of the outer frame, and the second protective frame is fixedly mounted on the back of the glass sheet, wherein the glass sheet is fixed by the outer frame, and then the second protective frame is conveniently installed through the glass sheet, and the impact force received by the aluminum plate and the front of the backlight source is absorbed by the second protective frame.

[0011] Preferably, the first protective frame and the second protective frame are both made of rubber material, wherein the rubber material is resistant to high temperatures and can be insulated, and can absorb external impact forces, thereby protecting the backlight source.

[0012] Preferably, plug-in rods are fixedly installed on the four corners of the back side of the outer frame, and the surface of the plug-in rods is provided with threads. The four corners of the side wall of the outer shell are provided with plug-in holes corresponding to the positions of the plug-in rods. The end of the plug-in rod away from the outer frame passes through the plug-in hole and is located outside the plug-in hole, wherein the plug-in rod is used to facilitate the installation of the outer frame and the outer shell together, and the plug-in rod can be fixed to the inside of the plug-in hole by the threaded sleeve to prevent the plug-in rod from detaching from the inside of the plug-in hole and causing the outer frame to fall off.

[0013] Preferably, the end of the plug-in rod located outside the plug-in hole is threadedly sleeved with a threaded sleeve, wherein the plug-in rod can be fixed inside the plug-in hole through the threaded sleeve to prevent the plug-in rod from slipping out of the plug-in hole and causing the outer frame to separate from the outer shell.

[0014] Preferably, evenly distributed heat dissipation holes are formed through the back side of the housing, and the heat generated by the backlight source can be easily dissipated through the heat dissipation holes.

[0015] The utility model provides a liquid crystal display backlight module, which has the following beneficial effects:

[0016] 1. The backlight module of the liquid crystal display screen can protect the backlight source through the protection component. When the shell or the outer frame is hit by the external impact, the second protection frame and the first protection frame can absorb the impact force generated by the collision. If the impact force is large, since the side wall of the first protection frame is provided with a diamond groove, the side wall of the first protection frame can be deformed, and then the impact force is buffered, effectively reducing the impact force on the backlight source. The first protection frame and the second protection frame will not cause impact to the backlight source under the action of external force, avoiding the situation that the backlight source connecting line falls off due to excessive impact force, and can ensure the normal use of the backlight source. It solves the problem that the springs 1 and 2 of the existing device will rebound and continue to impact the backlight source after absorbing the external impact through compression, resulting in poor protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a rear view structural schematic diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the split structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the first protective frame structure of the utility model.

[0021] In the figure: 1. outer shell; 11. heat dissipation hole; 12. plug-in hole; 2. outer frame; 21. glass sheet; 22. plug-in rod; 23. threaded sleeve; 3. aluminum plate; 31. backlight source; 4. protective component; 41. first protective frame; 42. diamond groove; 43. second protective frame. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1:

[0024] like Figure 1-4As shown: it includes a shell 1, a backlight source 31 is arranged inside the shell 1, an outer frame 2 is arranged on the side of the shell 1, a protective component 4 is arranged inside the shell 1, the protective component 4 includes a first protective frame 41 fixedly installed on the inner wall of the shell 1, the side wall of the first protective frame 41 is penetrated with evenly distributed diamond grooves 42, an aluminum plate 3 is fixedly installed on the side wall of the first protective frame 41, the backlight source 31 is fixedly installed on the surface of the aluminum plate 3, a second protective frame 43 with an "L"-shaped cross-section is arranged on the side of the aluminum plate 3 away from the first protective frame 41, the surface of the second protective frame 43 is fitted with the inner wall of the shell 1, the aluminum plate 3 is movably mounted inside the second protective frame 43, the inner wall of the outer frame 2 is fixedly mounted with a glass sheet 21, and the second protective frame 43 is fixedly mounted on the glass On the back of the sheet 21, the first protective frame 41 and the second protective frame 43 are both made of rubber material. The backlight source 31 can be protected by the protective component 4. When the housing 1 or the outer frame 2 is impacted by the outside, the second protective frame 43 and the first protective frame 41 can absorb the impact force generated by the collision. If the impact force is large, since the side wall of the first protective frame 41 is provided with a diamond groove 42, the side wall of the first protective frame 41 can be deformed, and then the impact force is buffered, effectively reducing the impact force on the backlight source 31. The first protective frame 41 and the second protective frame 43 will not cause impact to the backlight source 31 under the action of external force, thereby avoiding the situation where the connecting line of the backlight source 31 falls off due to excessive impact force, and the normal use of the backlight source 31 can be ensured.

[0025] Embodiment 2:

[0026] like Figure 1-3 As shown: the four corners of the back side of the outer frame 2 are fixedly installed with a plug rod 22, and the surface of the plug rod 22 is provided with a thread, and the four corners of the side wall of the shell 1 are provided with a plug hole 12 opposite to the position of the plug rod 22, and the end of the plug rod 22 away from the outer frame 2 passes through the plug hole 12 and is located outside the plug hole 12, and the end of the plug rod 22 located outside the plug hole 12 is threadedly sleeved with a threaded sleeve 23, and the back side of the shell 1 is penetrated by evenly distributed heat dissipation holes 11, so that the outer frame 2 and the shell 1 can be easily installed together through the plug rod 22, and the plug rod 22 can be fixed to the inside of the plug hole 12 through the threaded sleeve 23 to prevent the plug rod 22 from detaching from the inside of the plug hole 12 and causing the outer frame 2 to fall off, and the plug rod 22 can be fixed to the inside of the plug hole 12 through the threaded sleeve 23 to prevent the plug rod 22 from slipping out of the inside of the plug hole 12 and causing the outer frame 2 to separate from the shell 1, and the heat generated by the backlight source 31 can be easily dissipated through the heat dissipation holes 11.

[0027] The working principle and use process of the utility model: when the backlight module of the liquid crystal display is used, the plug-in rod 22 is plugged into the inside of the plug-in hole 12, and then the outer frame 2 can be fixed to the side of the shell 1 by threading the threaded sleeve 23 on one end of the threaded sleeve 23, and then the surface of the second protective frame 43 is in contact with the surface of the aluminum plate 3 and the inner wall of the shell 1, so that the installation of the outer frame 2 and the shell 1 can be completed, and the backlight source 31 can be protected. When the shell 1 or the outer frame 2 is hit by the outside, the second protective frame 43 and the first protective frame 41 will absorb the impact force generated by the collision, and if the impact force is large, since the side wall of the first protective frame 41 is provided with a diamond groove 42, the side wall of the first protective frame 41 can be deformed, and then the impact force is absorbed, and then the impact force on the backlight source 31 is effectively reduced, and the situation that the connecting line of the backlight source 31 falls off due to excessive impact force is avoided, and the normal use of the backlight source 31 can be ensured.

[0028] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A liquid crystal display backlight module, comprising a housing (1), a backlight source (31) being arranged inside the housing (1), and an outer frame (2) being arranged on a side of the housing (1); Features: A protective component (4) is arranged inside the housing (1); The protective component (4) comprises a first protective frame (41) fixedly mounted on the inner wall of the outer shell (1), the side wall of the first protective frame (41) being penetrated by diamond-shaped grooves (42) evenly distributed, the side wall of the first protective frame (41) being fixedly mounted with an aluminum plate (3), the backlight source (31) being fixedly mounted on the surface of the aluminum plate (3), a second protective frame (43) having an "L"-shaped cross-section is provided on a side of the aluminum plate (3) away from the first protective frame (41), the surface of the second protective frame (43) being in contact with the inner wall of the outer shell (1), and the aluminum plate (3) being movably mounted inside the second protective frame (43).

2. The liquid crystal display backlight module according to claim 1, characterized in that: A glass sheet (21) is fixedly mounted on the inner wall of the outer frame (2), and the second protective frame (43) is fixedly mounted on the back of the glass sheet (21).

3. The liquid crystal display backlight module according to claim 1, characterized in that: The first protective frame (41) and the second protective frame (43) are both made of rubber.

4. The liquid crystal display backlight module according to claim 1, characterized in that: Connecting rods (22) are fixedly mounted at the four corners of the back side of the outer frame (2), the surface of the connecting rods (22) is provided with threads, and connecting holes (12) corresponding to the connecting rods (22) are provided at the four corners of the side wall of the outer shell (1), and one end of the connecting rod (22) away from the outer frame (2) passes through the connecting hole (12) and is located outside the connecting hole (12).

5. The liquid crystal display backlight module according to claim 4, characterized in that: One end of the plug-in rod (22) located outside the plug-in hole (12) is threadedly sleeved with a threaded sleeve (23).

6. The liquid crystal display backlight module according to claim 1, characterized in that: The back side of the housing (1) is penetrated by evenly distributed heat dissipation holes (11).

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