Backlight source anti-bright line structure

Abstract

The utility model discloses a backlight source prevents bright line structure, it includes the vice frame, the vice frame is fixedly connected with the main frame, the square groove is opened on the side surface of vice frame, the inside slide coupling of vice frame has the push board, the push board is fixedly connected with the slide bar, the outer cylindrical surface of slide bar is surrounded with spring, the slide bar is slidably connected with the sliding block, the both sides of sliding block are fixedly connected with the buckle, the protruding of vice frame is fixedly connected with the loose buckle ware. Through above -mentioned structure, through setting slide block, slide bar, push board, buckle, loose buckle ware can realize pressing loose buckle ware, buckle and the square groove on the vice frame separate, and promote the sliding block can take down the compression mechanism, then take out LED module and replace LED lamp, and the installation position of LED lamp pearl is more accurate through the mode of buckle and recess installation, and the installation process is more stable, avoids the installation when LED lamp pearl damage or position deviation causes the light distribution uneven to cause partial bright line.

Description

Technical Field

[0001] This utility model relates to the field of liquid crystal display technology, specifically to a backlight anti-brightness line structure. Background Technology

[0002] A liquid crystal display (LCD) is a display device that uses liquid crystals to control light transmission and achieve color display. It has advantages such as small size, light weight, energy saving, and low radiation. It is widely used in televisions, monitors, laptops and other fields. LCD displays images by controlling the light transmittance through the deflection of liquid crystal molecules. Since liquid crystals themselves do not emit light, a backlight is required to provide them with light. Without a backlight, the screen cannot display images.

[0003] Backlights are classified into three types according to their light source: EL, CCFL, and LED. Among them, LED is the most commonly used light source. However, existing backlights often have the problem of being difficult to disassemble. This may lead to LEDs being damaged due to overheating or other reasons, making them difficult to replace. Even if they are successfully replaced, the uneven light distribution may cause local bright lines due to inaccurate installation of the LED beads or LEDs falling off or being damaged due to vibration during installation. Utility Model Content

[0004] This utility model provides a backlight anti-bright-line structure. By setting a slider, slide rod, push plate, buckle, and release device, pressing the release device separates the buckle from the square groove on the sub-frame. Pushing the slider removes the clamping mechanism, and then the LED module can be taken out to replace the LED. At the same time, the installation of the LED beads by means of buckles and grooves can make the installation position of the LED beads more precise and the installation process more stable, avoiding uneven light distribution and local bright lines caused by damage to the LED beads or misalignment during installation.

[0005] To achieve the above objectives, a backlight anti-brightness line structure is provided, including a sub-frame, a main frame fixedly connected to the sub-frame, a square groove on the side of the sub-frame, a push plate slidably connected inside the sub-frame, a slide rod fixedly connected to the push plate, a spring surrounding the outer cylindrical surface of the slide rod, a slider slidably connected to the slide rod, and clips fixedly connected to both sides of the slider. A protrusion is provided on the outer side of the sub-frame, and a release device is fixedly connected to the protrusion on the sub-frame. The clips engage with the square groove on the side of the sub-frame. A heat sink is provided on the push plate. The spring is used to press the LED module firmly during installation via the push plate; the slider facilitates the pressing operation by pushing the spring; the clips fix the slider; the release device facilitates the release of the clips; and the heat sink dissipates heat from the LED chips.

[0006] According to the backlight anti-brightness line structure, the protrusion on the sub-frame is fixedly connected to the sub-frame, and the surface of the square groove near the sub-frame of the release device is provided with a protrusion, which is fixedly connected to the release device. A limit ring is fixedly connected to the end face of the slide rod. The limit ring is set to restrict the sliding of the slider and prevent it from sliding off the slide rod.

[0007] According to the backlight anti-brightness line structure, one end of the spring is fixedly connected to the push plate, and the end of the spring away from the push plate is fixedly connected to the slider. The sliding rods are evenly distributed on the push plate, and the slider has through holes. The inner surface of the through holes on the slider is slidably connected to the sliding rods. The sliding rods are provided to allow the slider to slide along them, and the through holes on the slider are provided to cooperate with the sliding rods.

[0008] According to the backlight anti-brightness line structure, the heat sink has protrusions, which are fixedly connected to the heat sink. An aluminum substrate is fixedly connected to the surface of the protrusions away from the push plate. The heat sink is used to dissipate heat from the LEDs, the aluminum substrate is used to fix the LED chips, and the protrusions on the heat sink are used to fix the aluminum substrate.

[0009] According to the aforementioned backlight anti-brightness line structure, LED beads are soldered onto the aluminum substrate, and fins are provided on the heat sink, with the fins fixedly connected to the heat sink. The LED beads are used to provide light for the backlight, and the fins are used to enhance heat dissipation.

[0010] According to the backlight anti-brightness line structure, a back plate is fixedly connected inside the main frame, and a square groove is formed on the inner surface of the main frame near the LED beads, through which the LED beads pass. The square groove on the main frame is used to allow the light emitted by the LED beads to enter the light guide plate.

[0011] According to the backlight anti-brightness line structure, a reflective film is attached to the back plate, a light guide plate is attached to the surface of the reflective film away from the back plate, a diffusion film is attached to the surface of the light guide plate away from the back plate, a display panel is attached to the surface of the diffusion film away from the back plate, and the surface of the back plate away from the reflective film is slidably connected to the heat sink.

[0012] According to the backlight anti-brightness line structure, the light guide plate, diffusion film, and display panel are all fixedly connected to the main frame.

[0013] The beneficial effects of this utility model are as follows: By setting up a slider, slide rod, push plate, buckle, and release device, pressing the release device separates the buckle from the square groove on the sub-frame. Pushing the slider removes the clamping mechanism, and then the LED module can be taken out to replace the LED light. At the same time, the installation method of buckle and groove can make the installation position of the LED light bead more accurate and the installation process more stable, avoiding damage to the LED light bead or positional displacement during installation, which would lead to uneven light distribution and local bright lines.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a three-dimensional structural diagram of a backlight anti-brightness line structure according to the present invention; Figure 2 This is a three-dimensional structural view of a backlight anti-brightness line structure according to this utility model from another perspective; Figure 3 This is a three-dimensional structural diagram of the frame portion of a backlight anti-brightness line structure according to the present invention. Figure 4 This is a three-dimensional structural view of the frame portion of a backlight anti-brightness line structure according to this utility model from another perspective. Figure 5 This is a three-dimensional structural diagram of the pressing mechanism of the backlight anti-brightness line structure of this utility model. Figure 6 This is a three-dimensional structural diagram of the light-averaging portion of a backlight anti-brightness line structure according to this utility model.

[0016] Legend: 1. Sub-frame; 2. Release device; 3. Main frame; 4. Display panel; 5. Slider; 6. Limiting ring; 7. Slide rod; 8. Spring; 9. Buckle; 10. Push plate; 11. Heat sink; 12. Diffuser film; 13. Light guide plate; 14. Reflective film; 15. Aluminum substrate; 16. LED beads; 17. Back plate. Detailed Implementation

[0017] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0018] Reference Figures 1 to 6This utility model discloses a backlight anti-brightness line structure, which includes a sub-frame 1, a main frame 3 fixedly connected to the sub-frame 1, a square groove on the side of the sub-frame 1, a push plate 10 slidably connected inside the sub-frame 1, a slide rod 7 fixedly connected to the push plate 10, a spring 8 surrounding the outer cylindrical surface of the slide rod 7, a slider 5 slidably connected to the slide rod 7, and buckles 9 fixedly connected to both sides of the slider 5. A protrusion is provided on the outer side of the sub-frame 1, and a release device 2 is fixedly connected to the protrusion on the sub-frame 1. The buckles 9 engage with the square groove on the side of the sub-frame 1. A heat sink 11 is provided on the push plate 10. The connecting rod between the release device 2 and the protrusion on the sub-frame 1 is an elastic rod, and the connecting rod between the buckles 9 and the slider 5 is an elastic rod.

[0019] The protrusion on the sub-frame 1 is fixedly connected to the sub-frame 1. The surface of the square groove of the release device 2 near the sub-frame 1 is provided with a protrusion. The protrusion on the release device 2 is fixedly connected to the release device 2. The limit ring 6 is fixedly connected to the end face of the slide rod 7.

[0020] One end of the spring 8 is fixedly connected to the push plate 10, and the end of the spring 8 away from the push plate 10 is fixedly connected to the slider 5. The slider 7 is evenly distributed on the push plate 10. The slider 5 has a through hole, and the inner surface of the through hole on the slider 5 is slidably connected to the slider 7.

[0021] The heat sink 11 has a protrusion, which is fixedly connected to the heat sink 11. An aluminum substrate 15 is fixedly connected to the surface of the protrusion away from the push plate 10. The aluminum substrate 15 is provided with a power supply circuit and LED lamp bead 16 pads.

[0022] LED beads 16 are soldered onto the aluminum substrate 15. Fins are provided on the heat sink 11 and are fixedly connected to the heat sink 11. The LED beads 16 are surface mount components.

[0023] The main frame 3 is fixedly connected to the back plate 17. The inner surface of the main frame 3 near the LED lamp bead 16 has a square groove, through which the LED lamp bead 16 passes.

[0024] A reflective film 14 is attached to the back panel 17. A light guide plate 13 is attached to the surface of the reflective film 14 away from the back panel 17. A diffusion film 12 is attached to the surface of the light guide plate 13 away from the back panel 17. A display panel 4 is attached to the surface of the diffusion film 12 away from the back panel 17. The surface of the back panel 17 away from the reflective film 14 is slidably connected to the heat sink 11. A black PET film is provided on the outer edge of the diffusion film 12, and its bottom end is attached to the top edge of the light guide plate 13. Its cross-section is vertically located between the display panel 4 and the diffusion film 12. At the same time, black ink is provided on the top edge of the display panel 4 to avoid bright lines and improve the stability of the black PET film.

[0025] The light guide plate 13, the diffusion film 12, and the display panel 4 are all fixedly connected to the main frame 3. The side of the light guide plate 13 near the LED beads 16 is in close contact with the LED beads 16 to prevent light leakage.

[0026] Working principle: When the LED bead 16 needs to be repaired, press the release device 2. The protrusion on the release device 2 pushes the latch 9, and the latch 9 separates from the square groove on the sub-frame 1. Since the spring 8 is in a compressed state, the slider 5 slides away from the heat sink 11. At this time, push the slider 5 away from the heat sink 11 by hand to remove the clamping mechanism. Push the heat sink 11 and take out the LED module to replace the LED bead 16 on the heat sink 11. After the replacement is completed, put the LED module back into the corresponding groove and make sure that the LED bead 16 is facing the square groove on the main frame 3. After the LED module is installed in place, put the clamping mechanism into the groove and push the slider 5. When you feel resistance, it means that the push plate 10 is in contact with the heat sink 11. Continue to push the slider 5. At this time, the spring 8 is compressed until you hear a "click" sound, which means that the latch 9 has been locked in place.

[0027] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A backlight anti-brightness line structure, characterized in that, The system includes a sub-frame (1), on which a main frame (3) is fixedly connected. A square groove is opened on the side of the sub-frame (1). A push plate (10) is slidably connected inside the sub-frame (1). A slide rod (7) is fixedly connected on the push plate (10). A spring (8) is wrapped around the outer cylindrical surface of the slide rod (7). A slider (5) is slidably connected on the slide rod (7). Buckles (9) are fixedly connected to both sides of the slider (5). A protrusion is provided on the outer side of the sub-frame (1). A release device (2) is fixedly connected to the protrusion on the sub-frame (1). The buckle (9) engages with the square groove on the side of the sub-frame (1). A radiator (11) is provided on the push plate (10).

2. The backlight anti-brightness line structure according to claim 1, characterized in that, The protrusion on the sub-frame (1) is fixedly connected to the sub-frame (1). The surface of the square groove of the release device (2) near the sub-frame (1) is provided with a protrusion. The protrusion on the release device (2) is fixedly connected to the release device (2). A limit ring (6) is fixedly connected to the end face of the slide rod (7).

3. The backlight anti-brightness line structure according to claim 1, characterized in that, One end of the spring (8) is fixedly connected to the push plate (10), and the end of the spring (8) away from the push plate (10) is fixedly connected to the slider (5). The sliding rod (7) is evenly distributed on the push plate (10). The slider (5) has a through hole, and the inner surface of the through hole on the slider (5) is slidably connected to the sliding rod (7).

4. The backlight anti-brightness line structure according to claim 1, characterized in that, A heat sink (11) is provided on the push plate (10), and a protrusion is provided on the heat sink (11). The protrusion on the heat sink (11) is fixedly connected to the heat sink (11), and an aluminum substrate (15) is fixedly connected to the surface of the protrusion on the heat sink (11) away from the push plate (10).

5. The backlight anti-brightness line structure according to claim 4, characterized in that, LED beads (16) are fixed on the aluminum substrate (15) by soldering, and fins are provided on the heat sink (11), and the fins are fixedly connected to the heat sink (11).

6. The backlight anti-brightness line structure according to claim 1, characterized in that, The main frame (3) is fixedly connected to a back plate (17). A square groove is opened on the inner surface of the main frame (3) near the LED lamp bead (16). The LED lamp bead (16) passes through the square groove on the main frame (3).

7. A backlight anti-brightness line structure according to claim 6, characterized in that, A reflective film (14) is attached to the back plate (17). A light guide plate (13) is attached to the surface of the reflective film (14) away from the back plate (17). A diffusion film (12) is attached to the surface of the light guide plate (13) away from the back plate (17). A display panel (4) is attached to the surface of the diffusion film (12) away from the back plate (17). The surface of the back plate (17) away from the reflective film (14) is slidably connected to the heat sink (11).

8. A backlight anti-brightness line structure according to claim 7, characterized in that, The light guide plate (13), diffusion film (12), and display panel (4) are all fixedly connected to the main frame (3).

Images