LCD backlight module with adjustable brightness

Abstract

The utility model discloses an LCD (liquid crystal display) backlight module with adjustable brightness, which comprises a backlight module body and a substrate, the backlight module body is arranged on one side of the substrate, a limiting piece is arranged between the backlight module body and the substrate, and a positioning piece and a blocking piece are arranged on the other side of the substrate; two groups of limiting pieces and two groups of positioning pieces are arranged up and down, and two limiting pieces and two positioning pieces are arranged in each group left and right; through cooperative use of the limiting piece and the positioning piece, rapid assembly operation of the backlight module body and the substrate is achieved, movement of the positioning piece can be limited through the stopping piece, and the assembly firmness of the backlight module body can be improved; by rotating the knob, the lifting part moves upwards or downwards, so that the positioning part can be blocked or released, the subsequent disassembly or assembly operation on the substrate can be facilitated, the disassembly and assembly operation of the backlight module body can be completed by one person, the manpower is effectively saved, and the disassembly and assembly efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to backlight module technical field, especially a kind of adjustable brightness's LCD backlight module. BACKGROUND

[0002] Backlight module is one of the key components of liquid crystal display panel. The function is to supply sufficient brightness and uniform light distribution, so that it can display image normally. The so-called backlight is a light source located behind the liquid crystal display (LCD), and its lighting effect will directly affect the visual effect of liquid crystal display module (LCM).

[0003] The utility model with publication number CN221175207U discloses a backlight module convenient to disassemble, which comprises a backlight module body, a substrate and a connecting assembly. The connecting assembly comprises a connecting column fixed at the bottom corner of the backlight module body. The top side of the substrate is provided with a hole slot for inserting the connecting column. The bottom outer wall of the connecting column is provided with a limiting hole. The connecting and mounting process between the backlight module body and the substrate is more convenient through the cooperation of the connecting assembly, which facilitates the subsequent maintenance of the backlight module body and improves the maintenance efficiency of the backlight module body.

[0004] Although the above-mentioned backlight module convenient to disassemble can solve the corresponding technical problems, when disassembling the backlight module body and the substrate, the mounting bracket needs to be rotated first, and then the connecting column needs to be inserted or removed from the hole slot. However, during the disassembly process, the mounting bracket needs to be held by hand to prevent it from resetting and affecting the insertion or movement of the connecting column. Therefore, at least two people are needed to cooperate during the disassembly process, and one person cannot complete the operation, which wastes manpower to some extent and reduces the disassembly efficiency.

[0005] Therefore, an adjustable brightness LCD backlight module is proposed. UTILITY MODEL CONTENTS

[0006] The purpose of the utility model is to provide an adjustable brightness LCD backlight module to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model adopts the main technical scheme as follows:

[0008] An adjustable brightness LCD backlight module comprises:

[0009] A backlight module body and a substrate, the backlight module body is arranged on one side of the substrate, a limiting piece is arranged between the backlight module body and the substrate, and a positioning piece and a blocking piece are arranged on the other side of the substrate.

[0010] The limiting member and the positioning member are arranged in two groups, one vertically and one horizontally. Each group has two limiting members and two positioning members arranged horizontally and one horizontally. The two positioning members in each group are located between the two limiting members in the corresponding group. The limiting member and the positioning member are arranged in a one-to-one correspondence.

[0011] The blocking component includes two protruding plates fixedly connected to the side of the substrate away from the backlight module body. A bidirectional screw is rotatably connected between the two protruding plates. A lifting component is provided at the upper part and the bottom of the surface of the bidirectional screw. The two lifting components are respectively located between each set of two positioning components.

[0012] As a preferred technical solution, the limiting member includes a post fixedly connected to a corner on one side of the backlight module body, and the substrate has a hole for the post to pass through. The end of the post away from the backlight module body moves through the hole to one side of the substrate.

[0013] As a preferred technical solution, the positioning component includes a rod located on one side of the insertion post, the insertion post having a slot adapted to the rod, one end of the rod being inserted into the corresponding slot, and a guide component being provided between the rod and the substrate.

[0014] As a preferred technical solution, the guide includes a T-shaped strip fixedly connected to the insertion rod, and a T-shaped groove adapted to the T-shaped strip is opened on the side of the substrate facing the insertion rod. The inner wall surface of the T-shaped groove is slidably connected to the surface of the corresponding T-shaped strip.

[0015] As a preferred technical solution, the lifting component includes a threaded tube that is threaded onto the end of the surface of the bidirectional screw. A stop block is fixedly connected to the end of the threaded tube away from the convex plate. The stop block is located between two insert rods in each group, and one side of the stop block contacts the end of the corresponding insert rod away from the insert post.

[0016] As a preferred technical solution, the side of the stop block away from the spiral tube is provided with two symmetrical inclined surfaces.

[0017] As a preferred technical solution, a limiting sleeve is fixedly connected to the surface of the spiral tube, and one side of the limiting sleeve is slidably connected to the substrate.

[0018] As a preferred technical solution, a knob is fixedly connected to the middle of the surface of the bidirectional screw, and the knob is located between two protruding plates.

[0019] This utility model has at least the following beneficial effects:

[0020] This application achieves rapid assembly of the backlight module body and the substrate through the combined use of limiting and positioning components. The blocking component restricts the movement of the positioning component, which helps to improve the firmness of the backlight module body assembly. By rotating the knob, the lifting component can be moved up or down to block or release the positioning component, thereby facilitating the subsequent disassembly or installation of the substrate. One person can complete the disassembly and assembly of the backlight module body, effectively saving manpower and improving disassembly and assembly efficiency. Attached Figure Description

[0021] Fig. 1 This is a schematic diagram of the adjustable brightness LCD backlight module of this utility model;

[0022] Fig. 2 This is a three-dimensional structural diagram of the adjustable brightness LCD backlight module of this utility model in its disassembled state.

[0023] Fig. 3 This is a cross-sectional view of the insert, substrate, and guide of the adjustable brightness LCD backlight module of this utility model.

[0024] In the diagram: 100, backlight module body; 200, substrate; 300, limiting component; 310, insertion post; 320, insertion hole; 400, positioning component; 410, insertion rod; 420, slot; 430, guide component; 431, T-shaped strip; 432, T-shaped groove; 500, blocking component; 510, protruding plate; 520, bidirectional screw; 530, screw tube; 540, stop block; 550, limiting sleeve; 560, knob. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figs. 1-3This utility model provides an adjustable brightness LCD backlight module, including: a backlight module body 100 and a substrate 200. The backlight module body 100 is disposed on one side of the substrate 200. A limiting member 300 is provided between the backlight module body 100 and the substrate 200. A positioning member 400 and a blocking member 500 are provided on the other side of the substrate 200. The limiting member 300 and the positioning member 400 are each arranged in two sets vertically, and each set of limiting members 300 and positioning members 400 has two sets arranged horizontally. The two positioning members in each set... Each 400 is located between two limiting members 300 in the corresponding group, and the limiting members 300 and the positioning members 400 are arranged in a one-to-one correspondence; the blocking member 500 includes two protruding plates 510 fixedly connected to the side of the substrate 200 away from the backlight module body 100 and arranged vertically, and the two protruding plates 510 are rotatably connected to a bidirectional screw 520 through a bearing, and a lifting member is provided at the upper part and the bottom of the surface of the bidirectional screw 520, and the two lifting members are respectively located between the two positioning members 400 in each group to achieve the blocking effect on the positioning members 400.

[0027] It should be noted that the structure and working principle of the aforementioned backlight module body 100 are consistent with the backlight module structure in the backlight module and display device disclosed in the existing utility model patent document with publication number CN215526298U. It adopts a direct-lit light source with a first light-emitting area and a second light-emitting area in combination with a light guide plate with a first light-incident area and a second light-incident area. The first light-emitting area and the second light-emitting area are separately controlled by a driving circuit, and the light emitted by the first light-emitting area and the light emitted by the second light-emitting area are uniformly discharged through the light guide plate, so that the brightness of the backlight module can be adjusted according to the requirements of various application scenarios, thereby achieving an adjustable brightness effect, which is conducive to meeting the user's usage needs in different scenarios and improving the user experience.

[0028] The limiting member 300 includes a post 310 fixedly connected to a corner on one side of the backlight module body 100. The substrate 200 has an insertion hole 320 for the post 310 to pass through. One end of the post 310 away from the backlight module body 100 passes through the insertion hole 320 to one side of the substrate 200. The limiting member 300 can realize the initial limiting operation between the backlight module body 100 and the substrate 200, effectively preventing the backlight module body 100 from moving vertically on the substrate 200.

[0029] The positioning component 400 includes a rod 410 located on one side of the insertion post 310. The insertion post 310 has a slot 420 adapted to the rod 410. One end of the rod 410 is inserted into the corresponding slot 420. A guide 430 is provided between the rod 410 and the substrate 200. The positioning component 400 enables secondary positioning of the backlight module body 100 and the substrate 200, effectively preventing the backlight module body 100 from moving horizontally on the substrate 200, thereby completing the fixing operation of the substrate 200.

[0030] The guide member 430 includes a T-shaped strip 431 fixedly connected to the insertion rod 410. The substrate 200 has a T-shaped groove 432 adapted to the T-shaped strip 431 on the side facing the insertion rod 410. The inner wall surface of the T-shaped groove 432 is slidably connected to the surface of the corresponding T-shaped strip 431. The guide member 430 can guide the insertion rod 410, so that the insertion rod 410 can move horizontally stably, and can also prevent the insertion rod 410 from slipping off the substrate 200.

[0031] The lifting component includes a threaded tube 530 that is threaded onto the end of the surface of the bidirectional screw 520. A stop block 540 is fixedly connected to the end of the threaded tube 530 away from the protrusion plate 510. The stop block 540 is located between the two insertion rods 410 in each group, and one side of the stop block 540 contacts the end of the corresponding insertion rod 410 away from the insertion post 310. By rotating the bidirectional screw 520, the lifting component can be driven to move up or down, thereby enabling the synchronous blocking or release of the two insertion rods 410 in each group.

[0032] Among them, the side of the stop block 540 away from the screw tube 530 is provided with two symmetrical inclined surfaces, which facilitate the insertion of the stop block 540 between each group of two insert rods 410.

[0033] Among them, the surface of the solenoid 530 is fixedly connected to the limiting sleeve 550. One side of the limiting sleeve 550 is slidably connected to the base plate 200. When the solenoid 530 moves, it can drive the limiting sleeve 550 to move synchronously, which can limit the solenoid 530, so that the solenoid 530 can move up and down stably and avoid rotating synchronously with the bidirectional screw 520.

[0034] A knob 560 is fixedly connected to the middle of the surface of the bidirectional screw 520. The knob 560 is located between two protruding plates 510, and the bidirectional screw 520 can be rotated by force through the knob 560.

[0035] The working principle of this utility model is as follows: Rotating the knob 560 causes the double-ended screw 520 to rotate. Under the action of the thread, the double-ended screw 520 drives the screw tube 530 to move along its axis. The screw tube 530 drives the stop block 540 and the limiting sleeve 550 to move synchronously, causing the two stop blocks 540 to move synchronously towards each other until their maximum limit. At this point, the stop block 540 separates from the insertion rod 410, thus completing the release operation of the insertion rod 410. Pushing the insertion rod 410 causes each group... The two insert rods 410 move towards each other, causing the T-shaped strip 431 to slide within the corresponding T-shaped groove 432 until the end of the insert rod 410 disengages from the inner cavity of the slot 420, thus completing the unlocking operation of the limiting member 300; the backlight module body 100 is then removed, causing the backlight module body 100 to move synchronously with the insert post 310 and the slot 420 until the insert post 310 disengages from the inner cavity of the insertion hole 320, thus completing the disassembly operation of the backlight module body 100 (e.g., Fig. 2 (as shown); Conversely, by reversing the above steps, the installation of the backlight module body 100 can be completed. One person can complete the disassembly and assembly of the backlight module body 100, effectively saving manpower and thus improving the disassembly and assembly efficiency.

[0036] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable brightness LCD backlight module, characterized in that, include: The backlight module body (100) and the substrate (200) are provided. The backlight module body (100) is disposed on one side of the substrate (200). A limiting member (300) is provided between the backlight module body (100) and the substrate (200). A positioning member (400) and a blocking member (500) are provided on the other side of the substrate (200). The limiting member (300) and the positioning member (400) are arranged in two sets, one vertically and one horizontally, and each set has two limiting members (300) and two positioning members (400) arranged horizontally. The two positioning members (400) in each set are located between the two limiting members (300) in the corresponding set. The limiting members (300) and the positioning members (400) are arranged in a one-to-one correspondence. The blocking member (500) includes two protruding plates (510) fixedly connected to the side of the substrate (200) away from the backlight module body (100). A bidirectional screw (520) is rotatably connected between the two protruding plates (510). A lifting member is provided at the upper part and the bottom of the surface of the bidirectional screw (520). The two lifting members are located between each set of two positioning members (400).

2. The adjustable brightness LCD backlight module according to claim 1, characterized in that: The limiting member (300) includes a post (310) fixedly connected to a corner on one side of the backlight module body (100). The substrate (200) has a socket (320) through which the post (310) passes. The end of the post (310) away from the backlight module body (100) extends through the socket (320) to one side of the substrate (200).

3. The adjustable brightness LCD backlight module according to claim 2, characterized in that: The positioning member (400) includes a rod (410) located on one side of the insertion post (310). The insertion post (310) has a slot (420) adapted to the rod (410). One end of the rod (410) is inserted into the corresponding slot (420). A guide member (430) is provided between the rod (410) and the base plate (200).

4. The adjustable brightness LCD backlight module according to claim 3, characterized in that: The guide member (430) includes a T-shaped strip (431) fixedly connected to the insert rod (410). The base plate (200) has a T-shaped groove (432) adapted to the T-shaped strip (431) on the side facing the insert rod (410). The inner wall surface of the T-shaped groove (432) is slidably connected to the surface of the corresponding T-shaped strip (431).

5. The adjustable brightness LCD backlight module according to claim 3, characterized in that: The lifting component includes a threaded tube (530) threaded onto the end of the surface of the bidirectional screw (520). A stop block (540) is fixedly connected to one end of the threaded tube (530) away from the protrusion plate (510). The stop block (540) is located between each group of two insert rods (410), and one side of the stop block (540) contacts the end of the corresponding insert rod (410) away from the insert post (310).

6. The adjustable brightness LCD backlight module according to claim 5, characterized in that: The stop block (540) has two symmetrical inclined surfaces on the side away from the screw tube (530).

7. The adjustable brightness LCD backlight module according to claim 5, characterized in that: A limiting sleeve (550) is fixedly connected to the surface of the solenoid (530), and one side of the limiting sleeve (550) is slidably connected to the base plate (200).

8. The adjustable brightness LCD backlight module according to claims 1-7, characterized in that: A knob (560) is fixedly connected to the middle of the surface of the bidirectional screw (520), and the knob (560) is located between two protruding plates (510).

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