Low-power-consumption LED backlight source

Abstract

The utility model relates to the technical field of LED backlight sources, and discloses a low-power-consumption LED backlight source which comprises a shell, a cover plate is detachably installed on the inner surface of the shell, and a dismounting mechanism is arranged on the inner wall of the bottom of the shell. The dismounting mechanism comprises a rotating plate rotationally connected to the inner wall of the bottom of the shell, a handheld plate is fixedly connected to the inner surface of the rotating plate, a rotating plate is rotationally connected to the outer wall of the handheld plate, a fastener is arranged on the inner wall of the rotating plate, and a positioning plate is fixedly connected to the outer arc surface of the rotating plate. A connecting plate is rotatably connected to the inner wall of the positioning plate, a movable plate is hinged to the side, away from the positioning plate, of the connecting plate, and an adjusting mechanism is arranged on the left side of the shell. When the cover plate is installed, the cover plate is firstly placed in the shell, then the handheld plate is rotated to enable the two sets of movable plates to move inwards, then the cover plate is installed through the limiting plate, fixing is completed through the bolts, and operation is easy and convenient.

Description

Technical Field

[0001] This utility model relates to the field of LED backlight technology, and in particular to a low-power LED backlight. Background Technology

[0002] A backlight is a light source located behind a liquid crystal display (LCD). Its function is to provide uniform backlighting to the LCD, enabling it to display clear images. Because LCDs themselves do not emit light, they need the light emitted by a backlight to illuminate the LCD panel so that users can see the content on the screen. To achieve low power consumption, LEDs are generally used as the light source.

[0003] When installing a backlight, a cover plate needs to be placed inside the housing, and then multiple bolts or screws on the cover plate need to be tightened to complete the installation. However, tightening multiple bolts or screws is a tedious process that requires individual operation, which is time-consuming and labor-intensive. This is especially true in large-scale production or scenarios that require rapid installation, as it can affect overall work efficiency. Therefore, a low-power LED backlight is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a low-power LED backlight, which aims to improve the problem of the cumbersome installation and splicing of the shell and cover plate by screwing in multiple sets of screws in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a low-power LED backlight, including a housing, a cover plate detachably installed on the inner surface of the housing, and a disassembly mechanism provided on the bottom inner wall of the housing;

[0006] The disassembly mechanism includes a rotating plate rotatably connected to the inner wall of the bottom of the outer casing. A hand-held plate is fixedly connected to the inner surface of the rotating plate. The rotating plate is rotatably connected to the outer wall of the hand-held plate. Fasteners are provided on the inner wall of the rotating plate. A positioning plate is fixedly connected to the outer arc surface of the rotating plate. A connecting plate is rotatably connected to the inner wall of the positioning plate. A movable plate is hinged to the side of the connecting plate away from the positioning plate. A limit plate is fixedly connected to the top of the movable plate. An adjustment mechanism is provided on the left side of the outer casing.

[0007] As a further description of the above technical solution:

[0008] The fasteners include bolts threaded to the inner wall of the rotating plate, with the top of the bolts threaded to the bottom inner wall of the housing.

[0009] As a further description of the above technical solution:

[0010] Both the outer shell and the bottom of the rotating plate have square grooves, and the outer wall of the rotating plate matches the inner surface of the square grooves.

[0011] As a further description of the above technical solution:

[0012] A connecting groove is formed on the outer wall of the cover plate, and the top of the limiting plate is inserted into the inner wall of the connecting groove.

[0013] As a further description of the above technical solution:

[0014] The cover plate has protrusions on both the front and rear sides, and the inner walls of the front and rear sides of the outer shell have connecting grooves that match the protrusions.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the limiting plate is slidably connected to the inner wall of the outer shell.

[0017] As a further description of the above technical solution:

[0018] A circular groove is formed at the bottom of the rotating plate, and a through groove is formed at the bottom of the outer shell. The outer wall of the movable plate is slidably connected to the inside of the through groove.

[0019] As a further description of the above technical solution:

[0020] The movable plate is provided in two sets, and the two sets of movable plates are symmetrically arranged about the axis of the outer shell.

[0021] As a further description of the above technical solution:

[0022] The adjustment mechanism includes a fixed block fixedly connected to the left side of the housing, a threaded rod rotatably connected to the inner wall of the fixed block, a movable block threadedly connected to the outer wall of the threaded rod, a Fresnel lens fixedly connected to the top of the movable block, and a guide rod fixedly connected to the right side of the housing.

[0023] As a further description of the above technical solution:

[0024] The movable blocks are provided in two sets, with the inner wall of the other set of movable blocks slidably connected to the outer arc surface of the guide rod.

[0025] This utility model has the following beneficial effects:

[0026] 1. In this utility model, through the mutual cooperation between the outer shell, cover plate and its disassembly mechanism, when the cover plate needs to be installed, the cover plate is first placed inside the outer shell, then the hand-held plate is rotated to move the two sets of movable plates inward, and then the cover plate is installed by the limiting plate, and then fixed by bolts. The operation is simple and convenient.

[0027] 2. In this invention, through the coordinated operation of the adjustment mechanism and other structures, the rotating threaded rod causes the Fresnel lens to move. This allows for flexible adjustment of the relative position of the Fresnel lens and the LED light source according to actual lighting needs. When only localized lighting is required, the Fresnel lens is moved away from the LED light source, changing the light diffusion angle and concentrating the light on the area requiring illumination, thus reducing energy waste in areas of ineffective lighting. This means that while achieving the same localized lighting effect, the energy consumption of the LED backlight is significantly reduced, effectively improving energy efficiency. Attached Figure Description

[0028] Figure 1 This is a three-dimensional schematic diagram of a low-power LED backlight proposed in this utility model.

[0029] Figure 2 This is a three-dimensional schematic diagram of the guide rod of a low-power LED backlight proposed in this utility model.

[0030] Figure 3 This is a cross-sectional internal view of the housing of a low-power LED backlight proposed in this utility model.

[0031] Figure 4 A three-dimensional schematic diagram of the connection plate of a low-power LED backlight proposed in this utility model.

[0032] Figure 5 This is an enlarged structural diagram of point A of a low-power LED backlight proposed in this utility model.

[0033] Figure 6 This is a schematic diagram showing the disassembled cover plate and outer shell of a low-power LED backlight proposed in this utility model.

[0034] Legend:

[0035] 1. Outer shell; 2. Cover plate; 3. Adjustment mechanism; 301. Threaded rod; 302. Moving block; 303. Fresnel lens; 304. Fixing block; 305. Guide rod; 4. Disassembly mechanism; 401. Rotating plate; 402. Hand-held plate; 403. Positioning plate; 404. Connecting plate; 405. Movable plate; 406. Limiting plate; 407. Rotating plate; 408. Bolt. Detailed Implementation

[0036] 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.

[0037] Reference Figures 1-3 The present invention provides an embodiment of a low-power LED backlight, including a housing 1, with a cover plate 2 detachably mounted on the inner surface of the housing 1. The housing 1 and the cover plate 2 are configured to protect the internal components of the LED backlight. A disassembly mechanism 4 is provided on the bottom inner wall of the housing 1. The disassembly mechanism 4 facilitates the connection and fixation of the housing 1 and the cover plate 2.

[0038] Reference Figures 3-5 The disassembly mechanism 4 includes a rotating plate 401 rotatably connected to the inner wall of the bottom of the outer casing 1. A hand-held plate 402 is fixedly connected to the inner surface of the rotating plate 401. The hand-held plate 402 has an L-shaped cross-section, and the rotation of the hand-held plate 402 drives the rotating plate 401 to move synchronously. A rotating plate 407 is rotatably connected to the outer wall of the hand-held plate 402. Fasteners are provided on the inner wall of the rotating plate 407. The rotating plate 407 can rotate, thereby driving the fasteners to move synchronously. A positioning plate 403 is fixedly connected to the outer arc surface of the rotating plate 401, and a connecting plate 403 is rotatably connected to the inner wall of the positioning plate 403. 4. Two sets of positioning plates 403 are provided on both sides of the rotating plate 401. The connecting plate 404 is located between the two sets of positioning plates 403. A movable plate 405 is hinged to the side of the connecting plate 404 away from the positioning plate 403. The movable plate 405 is moved by rotating the connecting plate 404. A limit plate 406 is fixedly connected to the top of the movable plate 405. One set of movable plates 405 corresponds to two sets of limit plates 406. The limit plates 406 can stably support the cover plate 2. An adjustment mechanism 3 is provided on the left side of the outer shell 1. The purpose of low power consumption can be achieved by adjusting the mechanism 3.

[0039] Reference Figures 4-6The fasteners include bolts 408 threaded to the inner wall of the rotating plate 407. The top of the bolts 408 is threaded to the bottom inner wall of the outer casing 1. The rotating plate 401 can be fixed by the bolts 408. Square grooves are opened at the bottom of both the outer casing 1 and the rotating plate 401. The outer wall of the rotating plate 407 matches the inner surface of the square grooves. There are two pairs of square grooves, one set for the opening state of the limiting plate 406 and the other set for the retracted state of the limiting plate 406. A connecting groove is opened on the outer wall of the cover plate 2. The top of the limiting plate 406 is inserted into the inner wall of the connecting groove. The limiting plate 406 is L-shaped. The insertion of the top of the limiting plate 406 into the connecting groove completes the installation of the cover plate 2. The front and rear sides of the cover plate 2 are provided with protrusions. Both the front and rear inner walls of the cover plate 2 have connecting grooves that match the protrusions. The matching of the protrusions and connecting grooves allows the cover plate 2 to be positioned during installation. The outer wall of the limiting plate 406 is slidably connected to the inner wall of the outer shell 1. The limiting plate 406 can move horizontally. The through-hole setting facilitates the fixing of the cover plate 2. The bottom of the rotating plate 401 has a circular groove. The circular groove facilitates the installation of the hand-held plate 402. The bottom of the outer shell 1 has a through groove. The outer wall of the movable plate 405 is slidably connected to the inside of the through groove. The through groove facilitates the movement of the movable plate 405. There are two sets of movable plates 405. The two sets of movable plates 405 are symmetrically arranged about the axis of the outer shell 1. This arrangement allows the cover plate 2 to be evenly stressed after installation, thereby achieving stability.

[0040] Reference Figures 1-3 The adjustment mechanism 3 includes a fixed block 304 fixedly connected to the left side of the outer casing 1. Threaded rods 301 are rotatably connected to the inner walls of both sets of fixed blocks 304. The two sets of fixed blocks 304 provide stable support for the threaded rods 301. A movable block 302 is threadedly connected to the outer wall of the threaded rod 301. A Fresnel lens 303 is fixedly connected to the top of the movable block 302. The movement of the movable block 302 drives the Fresnel lens 303 to move, thereby achieving low power consumption. The Fresnel lens 303 is used in the lighting field. A guide rod 305 is fixedly connected to the right side of the outer casing 1. Two sets of movable blocks 302 are provided. The inner wall of the other set of movable blocks 302 is slidably connected to the outer arc surface of the guide rod 305. The guide rod 305 prevents the movable block 302 from flipping when it moves.

[0041] Working principle: The operator first tightens bolt 408 to release the bolt 408 from its limiting position on rotating plate 407. Then, the operator rotates rotating plate 407 and holds hand plate 402, rotating the rotating plate 401 around the rotational connection point between rotating plate 401 and the bottom inner wall of housing 1. Since hand plate 402 is fixedly connected to rotating plate 401, it drives rotating plate 401 to rotate synchronously. At this time, positioning plate 403 on the outer arc surface of rotating plate 401 rotates accordingly. Through the hinge structure between connecting plate 404 and movable plate 405, movable plate 405 is pulled outward along the through groove at the bottom of housing 1. At this time, the corresponding limiting plate 406 also moves outward, disengaging from the connecting groove on the outer wall of cover plate 2. Cover plate 2 can then be directly removed to inspect or replace internal components of the backlight.

[0042] When installing cover plate 2, align cover plate 2 with outer shell 1 and use the protrusions on the front and rear sides of cover plate 2 to insert into the connecting groove on the inner wall of outer shell 1 for positioning. Then, reverse the operation: rotate the hand plate 402 to make the rotating plate 401 rotate and reset. The positioning plate 403 and the connecting plate 404 push the movable plate 405 to extend inward. The L-shaped limiting plate 406 is inserted into the connecting groove of cover plate 2 to form a horizontal limiting support. Then, reset the rotating plate 407 and tighten the bolts 408 to complete the installation operation.

[0043] The light intensity is dynamically adjusted via the adjustment mechanism 3 to reduce power consumption: the operator rotates the threaded rod 301 (which is supported by the fixed blocks 304 on both sides). Since the threaded rod 301 is threadedly connected to the moving block 302, the rotating threaded rod 301 drives the moving block 302 to move axially. The Fresnel lens 303 fixed at the top of the moving block 302 moves synchronously. When power consumption needs to be reduced, the Fresnel lens 303 can be moved away from the LED light source. By changing the light diffusion angle through its optical properties, the ineffective light area is reduced, thus reducing overall power consumption while meeting local lighting needs. Conversely, moving it closer to the light source can increase the light intensity.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low power consumption LED backlight comprising a housing (1), characterised in that: The inner surface of the shell (1) is detachably mounted with a cover plate (2), and the bottom inner wall of the shell (1) is provided with a dismounting mechanism (4). The dismounting mechanism (4) comprises a rotating plate (401) rotatably connected to the bottom inner wall of the shell (1), the inner surface of the rotating plate (401) is fixedly connected with a hand-held plate (402), the outer wall of the hand-held plate (402) is rotatably connected with a rotating plate (407), the inner wall of the rotating plate (407) is provided with a fastener, the outer arc surface of the rotating plate (401) is fixedly connected with a positioning plate (403), the inner wall of the positioning plate (403) is rotatably connected with a connecting plate (404), the side away from the positioning plate (403) of the connecting plate (404) is hingedly connected with a movable plate (405), the top end of the movable plate (405) is fixedly connected with a limiting plate (406), and the left side of the shell (1) is provided with an adjusting mechanism (3).

2. The low power consumption LED backlight source according to claim 1, characterized in that: The fastener comprises a bolt (408) threadedly connected to the inner wall of the rotating plate (407), and the top end of the bolt (408) is threadedly connected to the bottom inner wall of the shell (1).

3. The low power consumption LED backlight of claim 1, wherein: The bottom of the shell (1) and the rotating plate (401) is provided with a square groove, and the outer wall of the rotating plate (407) is matched with the inner surface of the square groove.

4. The low power consumption LED backlight of claim 1, wherein: The outer wall of the cover plate (2) is provided with a connecting groove, and the top of the limiting plate (406) is inserted into the inner wall of the connecting groove.

5. The low power consumption LED backlight of claim 1, wherein: The front and rear sides of the cover plate (2) are provided with protrusions, and the inner walls of the front and rear sides of the shell (1) are provided with engagement grooves matched with the protrusions.

6. The low power consumption LED backlight of claim 1, wherein: The outer wall of the limiting plate (406) penetrates and is slidingly connected to the inner wall of the shell (1).

7. The low power consumption LED backlight of claim 1, wherein: The bottom of the rotating plate (401) is provided with a circular groove, the bottom of the shell (1) is provided with a through groove, and the outer wall of the movable plate (405) is slidingly connected to the inside of the through groove.

8. The low power consumption LED backlight of claim 1, wherein: The movable plate (405) is provided with two groups, and the two groups of movable plates (405) are symmetrically arranged about the axis of the shell (1).

9. The low power consumption LED backlight of claim 1, wherein: The adjusting mechanism (3) comprises a fixed block (304) fixedly connected to the left side of the shell (1), the inner wall of the fixed block (304) is rotatably connected with a threaded rod (301), the outer wall of the threaded rod (301) is threadedly connected with a moving block (302), the top end of the moving block (302) is fixedly connected with a Fresnel lens (303), and the right side of the shell (1) is fixedly connected with a guide rod (305).

10. The low power consumption LED backlight according to claim 9, wherein: The moving block (302) is provided with two groups, and the inner wall of the other moving block (302) is slidingly connected to the outer arc surface of the guide rod (305).

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