Liquid crystal screen with side mounting and fixing and local dimming functions
The design of the hinge and locking components solves the problem of unstable LCD screen installation, achieving stable fixation and local dimming functions, thus improving display effect and driving safety.
Patent Information
- Application Number
- CN202511302293.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-12
- Publication Date
- 2025-10-31
AI Technical Summary
In the traditional LCD screen installation process, foam tape is not stable and is greatly affected by environmental factors. After long-term use, it is easy to loosen or fall off, affecting the display effect and driving safety.
The design employs a rotating shaft, locking blocks, and clamping components. The locking blocks and clamping components are used to snap onto the instrument panel housing, simplifying the installation and disassembly process. Combined with the backlight circuit, it enables local dimming functionality.
This achieves stable fixation of the LCD screen, reduces maintenance costs and time, facilitates mass production and automated assembly, and improves driving safety and display clarity.
Smart Images
Figure CN120871487A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of liquid crystal display technology, and in particular to a liquid crystal display with side mounting and local dimming functions. Background Technology
[0002] The LCD screen on the dashboard of a light truck is an important component of modern commercial vehicles. It not only enhances the vehicle's technological feel but also provides the driver with more intuitive and comprehensive information. This LCD screen is typically located where traditional mechanical gauges are, or it may be embedded as a separate information display area within the dashboard. It clearly displays basic information such as vehicle speed, engine RPM, fuel level, and coolant temperature, while also providing auxiliary information such as mileage, fuel consumption statistics, and driving behavior assessments. Some advanced models even support navigation guidance, reversing camera display, and smartphone connectivity, greatly enhancing the driving experience and safety.
[0003] Traditional LCD screens are typically installed by attaching them to the back of the module using foam tape or double-sided foam adhesive. This requires leaving enough space on the back panel to accommodate the thickness of the foam, and then manually bonding the screen firmly to the dashboard housing. However, because the foam is bulky and occupies valuable interior space, and the stability of the foam bonding is greatly affected by factors such as ambient temperature and humidity, it is prone to loosening or even falling off after prolonged use, affecting display quality and driving safety. Summary of the Invention
[0004] In order to overcome the shortcomings of the prior art, the technical problem of the present invention is to provide a liquid crystal screen with side mounting and local dimming functions.
[0005] Technical solution: A liquid crystal screen with side mounting and local dimming functions includes a housing, a display screen, a rotating shaft, a locking block, and a clamping assembly. The display screen is installed inside the housing and has a backlight circuit. Two through slots are symmetrically and rotatably opened on the left and right sides of the housing. A rotating shaft is rotatably connected to each through slot. A semi-circular locking block is connected to the bottom of each rotating shaft. The locking blocks are located in the through slots. Sliding grooves are symmetrically opened on the front and rear sides of the housing. The locking assembly is connected to each sliding groove. The instrument panel housing is adapted to the locking block and the clamping assembly.
[0006] In a preferred embodiment of the present invention, the clamping assembly includes a wedge block and a spring. The wedge blocks are slidably connected in the groove. The bottom of each wedge block is provided with an inclined surface. The area of the side of the front and rear wedge blocks that are far apart from each other is smaller than the area of the side that is close to each other. The wedge blocks are connected to the outer shell.
[0007] In a preferred embodiment of the present invention, the clamping assembly further includes a push block, and push blocks are slidably connected in the slide groove. The push blocks are fixedly connected to the wedge blocks and pass through the upper surface of the outer shell.
[0008] In a preferred embodiment of the present invention, the clamping assembly further includes a first insert plate and insert rods. The first insert plate is slidably connected to both the front and rear sides of the housing. At least four insert rods are connected to the bottom of each first insert plate. Each wedge block has a slot adapted to the insert rods, and the insert rods are inserted into the wedge blocks through the slots.
[0009] In a preferred embodiment of the present invention, threaded holes are provided on both the left and right sides of the first insert plate.
[0010] In a preferred embodiment of the present invention, a second insert plate and insert blocks are further included. A square groove is opened on the rotating shaft. The second insert plate is slidably connected to the left and right sides of the outer shell. At least two insert blocks adapted to the square groove are connected to the bottom of the second insert plate.
[0011] Compared with the prior art, the present invention has the following advantages: The present invention is provided with a rotating shaft, a locking block and a locking assembly, which are locked onto the instrument panel housing by the locking block and the locking assembly. The operation is simple, reducing manual operation time and facilitating mass production and automated assembly. When disassembling and maintaining, the LCD screen can be quickly disassembled and replaced without damaging the overall instrument panel, reducing maintenance costs and time. Attached Figure Description
[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0013] Figure 2 This is a schematic diagram of the structure of the wedge block, the pressing block, and the first insert plate of the present invention.
[0014] Figure 3 This is a schematic diagram showing the separation of the insert block and the square groove structure of the present invention.
[0015] Figure 4 This is a schematic diagram showing the separation of the insertion rod and slot structure of the present invention.
[0016] The components in the attached diagram are labeled as follows: 1. Housing, 101. Through groove, 102. Slide groove, 2. Display screen, 3. Shaft, 31. Square groove, 4. Locking block, 5. Wedge block, 51. Slot, 6. Spring, 7. Press block, 8. First insert plate, 81. Threaded hole, 9. Insert rod, 10. Second insert plate, 11. Insert block. Detailed Implementation
[0017] Although the invention may be described with respect to specific applications or industries, those skilled in the art will recognize its broader applicability. Those skilled in the art will understand that terms such as "above," "below," "upward," "downward," etc., are used to describe the drawings and not to indicate a limitation on the scope of the invention as defined by the appended claims. Any numerical designations such as "first" or "second" are merely illustrative and not intended to limit the scope of the invention in any way.
[0018] A liquid crystal screen with side mounting and local dimming functions, such as Figures 1-4 As shown, the device includes a housing 1, a display screen 2, a rotating shaft 3, a locking block 4, a clamping assembly, a second insert plate 10, and insert blocks 11. The display screen 2 is installed inside the housing 1, and the display screen 2 is equipped with a backlight circuit. The housing 1 has two symmetrically rotatably opened through slots 101 on both the left and right sides. The rotating shaft 3 is rotatably connected to each through slot 101. The bottom of the rotating shaft 3 is connected to a semi-circular locking block 4, which is located in the through slot 101. The housing 1 has symmetrically opened sliding grooves 102 on both the front and rear sides. The locking assembly is connected to each sliding groove 102. The instrument panel housing is adapted to the locking block 4 and the clamping assembly. The rotating shaft 3 has a square groove 31. The housing 1 has a slidably connected second insert plate 10 on both the left and right sides. The bottom of the second insert plate 10 is connected to at least two insert blocks 11 that are adapted to the square grooves.
[0019] like Figures 1-4 As shown, the clamping assembly includes a wedge block 5, a spring 6, a push block 7, a first insert plate 8, and insert rods 9. The wedge blocks 5 are slidably connected in the slide groove 102. The bottom of each wedge block 5 is provided with a slope. The area of the side of the front and rear wedge blocks 5 that is far apart from each other is smaller than the area of the side that is close to each other. The spring 6 is connected between each wedge block 5 and the outer shell 1. The push block 7 is slidably connected in the slide groove 102. The push block 7 is fixedly connected to the wedge block 5. The push block 7 passes through the upper surface of the outer shell 1. The first insert plate 8 is slidably connected on both the front and rear sides of the outer shell 1. At least four insert rods 9 are connected to the bottom of each first insert plate 8. Each wedge block 5 has a slot 51 that matches the insert rod 9. The insert rod 9 is inserted into the wedge block 5 through the slot 51. Threaded holes 81 are opened on both the left and right sides of the first insert plate 8.
[0020] Initially, spring 6 is in its natural state, and wedge block 5 extends from the slide groove 102. During installation of the LCD screen, the first insert plate 8 and the second insert plate 10 are moved upwards, causing the insert rod 9 to disengage from the slot 51 and the insert block 11 to disengage from the square slot. The locking block 4 is rotated via the pivot 3 to fully enter the through groove 101, and the outer casing 1 is pressed to embed it into the mounting position of the instrument panel housing. During this process, the instrument panel housing presses against the inclined surface of the wedge block 5, causing the wedge block 5 to slide into the slide groove 102, compressing spring 6. When the LCD screen is correctly positioned, spring 6 returns to its original state, engaging wedge block 5 with the instrument panel housing. Then, the locking block 4 is reversed via the pivot 3, causing it to completely disengage from the through groove 101. At this point, the locking block 4 engages with the instrument panel housing, and then slides downwards. Move the second insert plate 10 to insert the insert block 11 into the square slot, slide the first insert plate 8 downward to insert the insert rod 9 into the slot 51, thereby locking and fixing the locking block 4 and the wedge block 5 to prevent the locking block 4 and the wedge block 5 from shaking due to vibration and bumps during driving, which would cause the LCD screen to shake, thus improving driving safety and the reliability of the display system. Then fix the screw to the instrument panel housing through the threaded hole 81, thus completing the installation of the LCD screen. When it is necessary to disassemble the LCD screen, simply reverse the above steps. The operation is simple, reduces manual operation time, and is convenient for mass production and automated assembly. When disassembling and maintaining, the LCD screen can be quickly disassembled and replaced without damaging the overall instrument panel, reducing maintenance costs and time.
[0021] The backlight circuit uses a thermistor, typically with a resistance of around 10KΩ. Its main functions include temperature sensing, temperature compensation, and overheat protection. The negative terminal of the backlight circuit is designed with three channels, which are controlled by a driver IC to achieve local dimming. This allows the backlight in the darker areas of the LCD to be turned off, thereby improving the clarity of the display and reducing power consumption. Each LED in the backlight circuit is connected in parallel with a Zener diode. The Zener diode prevents the current from becoming unstable due to excessive voltage and provides overload protection for the LED.
[0022] Those skilled in the art should understand that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.
Claims
1. A liquid crystal display screen with side mounting and local dimming functions, comprising a housing (1) and a display screen (2), wherein the display screen (2) is mounted inside the housing (1), characterized in that, It also includes a rotating shaft (3), a locking block (4) and a clamping assembly. The display screen (2) is equipped with a backlight circuit. The left and right sides of the outer shell (1) are symmetrically rotated with two through slots (101). The rotating shaft (3) is rotatably connected in the through slots (101). The bottom of the rotating shaft (3) is connected with a semi-circular locking block (4). The locking block (4) is located in the through slot (101). The front and rear sides of the outer shell (1) are symmetrically opened with sliding grooves (102). The locking assembly is connected in the sliding grooves (102). The instrument panel housing is adapted to the locking block (4) and the clamping assembly.
2. A liquid crystal screen with side mounting and local dimming functions as described in claim 1, characterized in that, The clamping assembly includes a wedge block (5) and a spring (6). The wedge block (5) is slidably connected in the groove (102). The bottom of the wedge block (5) is provided with an inclined surface. The area of the side of the front and rear wedge blocks (5) that is far away from each other is smaller than the area of the side that is close to each other. The wedge block (5) and the outer shell (1) are connected by a spring (6).
3. A liquid crystal screen with side mounting and local dimming functions as described in claim 2, characterized in that, The clamping assembly also includes a push block (7), and push blocks (7) are slidably connected in the slide groove (102). The push blocks (7) are fixedly connected to the wedge block (5), and the push blocks (7) pass through the upper surface of the outer shell (1).
4. A liquid crystal screen with side mounting and local dimming functions as described in claim 3, characterized in that, The clamping assembly also includes a first insert plate (8) and insert rods (9). The first insert plate (8) is slidably connected to both the front and rear sides of the outer shell (1). At least four insert rods (9) are connected to the bottom of the first insert plate (8). The wedge block (5) has a slot (51) that matches the insert rod (9). The insert rod (9) is inserted into the wedge block (5) through the slot (51).
5. A liquid crystal screen with side mounting and local dimming functions as described in claim 4, characterized in that, The first insert plate (8) has threaded holes (81) on both the left and right sides.
6. A liquid crystal screen with side mounting and local dimming functions as described in claim 5, characterized in that, The LCD screen also includes a second insert plate (10) and insert blocks (11). A square groove (31) is opened on the rotating shaft (3). The second insert plate (10) is slidably connected to the left and right sides of the outer shell (1). At least two insert blocks (11) that are adapted to the square groove are connected to the bottom of the second insert plate (10).