LED backlight module with good sealing performance

Abstract

The utility model relates to the technical field of light-emitting diode (LED) backlight modules, in particular to an LED backlight module with good sealing performance, which comprises a backlight module casing, a backlight module body is fixedly connected on the surface of the backlight module casing, an installation casing is fixedly installed on the surface of the backlight module casing, a display screen is fixedly connected on the surface of the installation casing, and a light source is arranged on the display screen. A rubber sealing strip is inserted into the surface of the backlight module shell, a connecting frame is fixedly connected to the surface of the mounting shell, a movable rod is slidably connected to the surface of the backlight module shell, and a limiting rod is fixedly connected to one end of the movable rod. According to the backlight module shell, the installation positions of the backlight module body and the display screen are sealed, so that the adaptive capacity of the backlight module shell in a severe environment is greatly improved, the failure rate of the backlight module shell is reduced, and the service life of the backlight module shell is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of LED backlight modules, in particular to an LED backlight module with good sealing performance. Background Art

[0002] The backlight module is a key component of a liquid crystal display (LCD) panel. Its function is to provide sufficient brightness and evenly distributed light to properly display images. LCDs are passive light-emitting devices; the display itself does not emit light, but is illuminated by the backlight module underneath. The backlight and LCD together constitute the LCD module.

[0003] To facilitate installation between the backlight module and the display screen, the connection between the backlight module and the display screen usually does not need to be sealed. However, in some harsh operating environments, dust and water may cause the backlight module to malfunction, greatly reducing the service life of the backlight module. Utility Model Content

[0004] The purpose of the present invention is to provide an LED backlight module with good sealing performance, so as to solve the problem raised in the above background technology that dust and water may cause the backlight module to malfunction in some harsh usage environments, thereby greatly reducing the service life of the backlight module.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an LED backlight module with good sealing performance: comprising a backlight module shell, a backlight module body fixedly connected to the surface of the backlight module shell, a mounting shell fixedly installed on the surface of the backlight module shell, a display screen fixedly connected to the surface of the mounting shell, a rubber sealing strip inserted on the surface of the backlight module shell, a connecting frame fixedly connected to the surface of the mounting shell, a movable rod slidably connected to the surface of the backlight module shell, one end of the movable rod fixedly connected to a limiting rod, the other end of the movable rod fixedly connected to a connecting plate, a spring fixedly connected to the surface of the backlight module shell, and a sealing gasket fixedly connected to the surface of the connecting plate.

[0006] Preferably, a slot is provided on the surface of the backlight module housing, the rubber sealing strip is plugged into the bottom of the slot of the backlight module housing, and the connecting frame is snap-connected to the slot of the backlight module housing.

[0007] Preferably, a groove is provided on one side of the backlight module housing slot, a guide hole is provided on the surface of the backlight module housing, and the guide hole of the backlight module housing is connected to the groove of the backlight module housing.

[0008] Preferably, the movable rod slides on the guide hole of the backlight module housing, the limiting rod slides on the groove of the backlight module housing, and the limiting rod and the connecting plate slide on the surface of the backlight module housing through the movable rod.

[0009] Preferably, the limiting rod is trapezoidal in shape, the top of the limiting rod is an inclined surface, a limiting groove is provided on the surface of the connecting frame, and the limiting rod is engaged and connected to the limiting groove of the connecting frame.

[0010] Preferably, the spring is fixedly connected to the surface of the limiting rod, and the elastic force of the sealing gasket acts on the limiting rod.

[0011] Preferably, the sealing gasket is arranged on a side of the connecting plate close to the movable rod, and the sealing gasket is connected to the connection between the backlight module housing and the mounting shell through the connecting plate.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The LED backlight module squeezes the rubber sealing strip through the connecting frame, and the rubber sealing strip forms a first layer of sealing between the backlight module housing and the installation shell. At the same time, the movable rod drives the connecting plate to move toward the backlight module housing under the elastic force of the spring. The connecting plate drives the sealing gasket to fit firmly at the connection between the backlight module housing and the installation shell, forming a second layer of sealing for the backlight module housing and the installation shell. By performing two sealing treatments on the backlight module body and the installation position of the display screen, the adaptability of the backlight module housing in harsh environments is greatly improved, the failure rate of the backlight module housing is reduced, and the service life of the backlight module housing is increased.

[0014] 2. The LED backlight module inserts the connecting frame into the card slot of the backlight module shell, and then engages the connecting frame into the card slot of the backlight module shell through the installation shell. At this time, the connecting frame will squeeze the inclined surface of the limit rod, so that the limit rod drives the movable rod to slide on the backlight module shell. When the limit rod slides to the groove of the backlight module shell, the connecting frame can be completely engaged and connected to the card slot of the backlight module shell. At this time, under the elastic force of the spring, the limit rod will slide back to its original position on the backlight module shell and engage and connect to the limit slot of the limit rod. The limit rod limits the position of the connecting frame on the backlight module shell, thereby completing the connection between the backlight module shell and the installation shell. There is no need to use tools such as bolts and glue for installation, which saves time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a frontal perspective schematic diagram of the structure of the present utility model;

[0016] Figure 2 This is a schematic front cross-sectional view of the structure of the present utility model;

[0017] Figure 3 For this utility model Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0018] Figure 4 For this utility model Figure 3 Schematic diagram of the enlarged structure at B in the middle;

[0019] Figure 5 It is a front view and a cross-sectional perspective diagram of the movable rod connection structure of the utility model.

[0020] In the figure: 1. Backlight module housing; 2. Backlight module body; 3. Mounting shell; 4. Display screen; 5. Rubber sealing strip; 6. Connecting frame; 7. Movable rod; 8. Limit rod; 9. Connecting plate; 10. Spring; 11. Sealing gasket. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-5 , an embodiment provided by the utility model:

[0023] The LED backlight module of the present invention has good sealing performance, comprises a backlight module shell 1, a backlight module body 2 is fixedly connected to the surface of the backlight module shell 1, a mounting shell 3 is fixedly installed on the surface of the backlight module shell 1, a display screen 4 is fixedly connected to the surface of the mounting shell 3, a rubber sealing strip 5 is inserted on the surface of the backlight module shell 1, a connecting frame 6 is fixedly connected to the surface of the mounting shell 3, a movable rod 7 is slidably connected to the surface of the backlight module shell 1, one end of the movable rod 7 is fixedly connected to the limiting rod 8, and the other end of the movable rod 7 is fixedly connected to the connecting plate 9, a spring 10 is fixedly connected to the surface of the backlight module shell 1, and a sealing gasket 11 is fixedly connected to the surface of the connecting plate 9. The backlight module shell 1 and the display screen 4 are installed without using bolts and glue, which makes the installation simpler and more convenient, saving time and effort. At the same time, the installation docking between the backlight module shell 1 and the display screen 4 adopts a double-layer sealing treatment, which greatly improves the adaptability of the backlight module shell 1 in harsh environments, reduces the failure rate of the backlight module shell 1, and increases the service life of the backlight module shell 1.

[0024] Furthermore, a card slot is opened on the surface of the backlight module housing 1, the rubber sealing strip 5 is inserted into the bottom of the card slot of the backlight module housing 1, and the connecting frame 6 is connected to the card slot of the backlight module housing 1. The rubber sealing strip 5 and the connecting frame 6 are both rectangular frame shapes. The connecting frame 6 will squeeze the rubber sealing strip 5 on the card slot of the backlight module housing 1, causing the rubber sealing strip 5 to deform, thereby achieving a sealing effect.

[0025] Furthermore, a groove is provided on one side of the card slot of the backlight module housing 1, a guide hole is provided on the surface of the backlight module housing 1, the guide hole of the backlight module housing 1 is connected to the groove of the backlight module housing 1, and the guide hole of the backlight module housing 1 is connected to the card slot of the backlight module housing 1 through the groove of the backlight module housing 1.

[0026] Furthermore, the movable rod 7 slides on the guide hole of the backlight module housing 1, the limit rod 8 slides on the groove of the backlight module housing 1, and the limit rod 8 and the connecting plate 9 slide on the surface of the backlight module housing 1 through the movable rod 7. By operating the connecting plate 9 on the outer surface of the backlight module housing 1, the connecting plate 9 can drive the limit rod 8 to slide on the groove of the backlight module housing 1 through the movable rod 7.

[0027] Furthermore, the limiting rod 8 is trapezoidal in shape, and the top of the limiting rod 8 is a slope. When the connecting frame 6 contacts the slope of the limiting rod 8, the limiting rod 8 will slide on the backlight module housing 1 to the groove of the backlight module housing 1. A limiting groove is opened on the surface of the connecting frame 6, and the limiting rod 8 is engaged and connected to the limiting groove of the connecting frame 6. The limiting rod 8 slides from the groove of the backlight module housing 1 to the slot of the backlight module housing 1 of the connecting frame 6. The limiting rod 8 is engaged and connected to the slot on the backlight module housing 1 and the limiting groove of the connecting frame 6.

[0028] Furthermore, the spring 10 is fixedly connected to the surface of the limiting rod 8 , the elastic force of the sealing gasket 11 acts on the limiting rod 8 , and the elastic force of the spring 10 acts on the movable rod 7 and the limiting rod 8 through the limiting rod 8 .

[0029] Furthermore, a sealing gasket 11 is arranged on one side of the connecting plate 9 close to the movable rod 7. The sealing gasket 11 is connected to the connection between the backlight module housing 1 and the mounting housing 3 through the connecting plate 9. The sealing gasket 11 seals the connection between the backlight module housing 1 and the mounting housing 3 again.

[0030] Working principle: Insert the connecting frame 6 into the card slot of the backlight module housing 1, and then engage the connecting frame 6 into the card slot of the backlight module housing 1 through the installation shell 3. At this time, the connecting frame 6 will squeeze the inclined surface of the limiting rod 8, so that the limiting rod 8 drives the movable rod 7 to slide on the backlight module housing 1. When the limiting rod 8 slides to the groove of the backlight module housing 1, the connecting frame 6 can be completely engaged and connected to the card slot of the backlight module housing 1. The connecting frame 6 squeezes the rubber sealing strip 5, and the rubber sealing strip 5 forms a first layer of sealing between the backlight module housing 1 and the installation shell 3. Under the elastic force of the spring 10, the limiting rod 8 will slide back to its original position on the backlight module housing 1, and The card-engaged connection is on the limiting groove of the limiting rod 8, and the limiting rod 8 limits the position of the connecting frame 6 on the backlight module housing 1, thereby completing the connection between the backlight module housing 1 and the mounting housing 3, and ensuring the stability of the first layer of sealing. At the same time, the movable rod 7 drives the connecting plate 9 to move toward the backlight module housing 1 under the elastic force of the spring 10, and the connecting plate 9 drives the sealing gasket 11 to fit firmly on the connection between the backlight module housing 1 and the mounting housing 3, forming a second layer of sealing for the backlight module housing 1 and the mounting housing 3, thereby greatly improving the adaptability of the backlight module housing 1 in harsh environments, reducing the failure rate of the backlight module housing 1, and increasing the service life of the backlight module housing 1.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A LED backlight module with good sealing performance, characterized by: The invention comprises a backlight module housing (1), a backlight module body (2) is fixedly connected to the surface of the backlight module housing (1), a mounting shell (3) is fixedly installed on the surface of the backlight module housing (1), a display screen (4) is fixedly connected to the surface of the mounting shell (3), a rubber sealing strip (5) is inserted on the surface of the backlight module housing (1), a connecting frame (6) is fixedly connected to the surface of the mounting shell (3), a movable rod (7) is slidably connected to the surface of the backlight module housing (1), one end of the movable rod (7) is fixedly connected to a limiting rod (8), the other end of the movable rod (7) is fixedly connected to a connecting plate (9), a spring (10) is fixedly connected to the surface of the backlight module housing (1), and a sealing gasket (11) is fixedly connected to the surface of the connecting plate (9).

2. The LED backlight module with good sealing performance according to claim 1, characterized in that: A card slot is provided on the surface of the backlight module housing (1); the rubber sealing strip (5) is plugged into the bottom of the card slot of the backlight module housing (1); and the connecting frame (6) is snap-connected to the card slot of the backlight module housing (1).

3. The LED backlight module with good sealing performance according to claim 1, characterized in that: A groove is provided on one side of the backlight module housing (1) slot, a guide hole is provided on the surface of the backlight module housing (1), and the guide hole of the backlight module housing (1) is connected to the groove of the backlight module housing (1).

4. The LED backlight module with good sealing performance according to claim 3, characterized in that: The movable rod (7) slides on the guide hole of the backlight module housing (1), the limiting rod (8) slides on the groove of the backlight module housing (1), and the limiting rod (8) and the connecting plate (9) slide on the surface of the backlight module housing (1) through the movable rod (7).

5. The LED backlight module with good sealing performance according to claim 4, characterized in that: The limiting rod (8) is in a trapezoidal shape, the top of the limiting rod (8) is an inclined surface, a limiting groove is provided on the surface of the connecting frame (6), and the limiting rod (8) is snap-connected to the limiting groove of the connecting frame (6).

6. The LED backlight module with good sealing performance according to claim 1, characterized in that: The spring (10) is fixedly connected to the surface of the limiting rod (8), and the elastic force of the sealing gasket (11) acts on the limiting rod (8).

7. The LED backlight module with good sealing performance according to claim 6, characterized in that: The sealing gasket (11) is arranged on a side of the connecting plate (9) close to the movable rod (7), and the sealing gasket (11) is connected to the connection between the backlight module housing (1) and the mounting shell (3) through the connecting plate (9).

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