Self-adaptive brightness adjusting backlight source

Abstract

The utility model discloses a self-adaptive brightness adjusting backlight source, which belongs to the technical field of backlight sources and comprises a backlight source body, a protective shell, a display window and a shell cover, an air inlet is arranged at the bottom of the shell cover, and two groups of air outlets are arranged on two sides of the air inlet and at two ends of the bottom of the shell cover. Dustproof assemblies are arranged between the air inlet and the shell cover and between the two sets of air outlets and the shell cover. A small silent fan is arranged in the air inlet. The protective shell, the display window, the shell cover, the air inlet, the air outlet, the small silent fan and the dustproof assembly are used in cooperation, the backlight source body can be protected, the problems that the backlight source is not protected, and the backlight source is prone to being eroded by dust and water vapor are solved, and the service life of the backlight source is prolonged. The safety of an internal circuit of the backlight source and the photosensitive sensor in a dust environment is improved, false triggering or failure is avoided, and the adaptability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of backlight source, concretely is a kind of adaptive brightness regulation backlight source. BACKGROUND

[0002] LED backlight is a kind of backlight panel using LED as light source, commonly used in liquid crystal display screen, television, electronic billboard etc. LED backlight panel takes LED as light source, and the light emitted by LED is evenly irradiated to display panel through reflecting plate, light guide plate and other structures, so as to improve the brightness and color reproduction of display screen.

[0003] The Chinese patent with disclosure (publication) No. CN220208050U discloses a kind of LED backlight source device with brightness self-adaptive function, it is related to LED backlight source technical field, it includes: frame, the upper surface of the frame is provided with backlight panel, the upper surface of the frame is close to the corner position and is uniformly provided with notch, the bottom of multiple notches is provided with socket, the inner surface of multiple sockets is provided with photosensitive sensor, the outer surface of the both sides of the frame is uniformly fixedly connected with multiple dampers.

[0004] The LED backlight source device with brightness self-adaptive function related in the above-mentioned patent still has some obvious deficiencies in actual use process, the device lacks the structure for protecting backlight source, so that it is easily eroded by dust and water vapor, affect service life, therefore we need to propose a kind of adaptive brightness regulation backlight source. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of adaptive brightness regulation backlight source, with the advantage of protecting backlight source, to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of adaptive brightness regulation backlight source, including backlight source body, the outside of the backlight source body is provided with protective shell, the top of the protective shell is provided with display window, the lower end of the protective shell is adaptively provided with shell cover, the bottom of the shell cover is provided with air inlet, the both sides of the air inlet and the both ends of the bottom of the shell cover are provided with two groups of air outlet, and the bottom of the shell cover between the side of the air inlet and the side of two groups of air outlet is provided with dustproof assembly for dustproof to backlight source body, the inside of the air inlet is provided with small silent fan.

[0007] Preferably, the surface of the backlight source body is provided with mounting frame, the four corners of the top of the mounting frame are provided with mounting slot, the inside of the mounting slot is provided with photosensitive sensor, the inner wall between the mounting frame and the protective shell is provided with dismounting assembly for mounting or dismounting mounting frame.

[0008] Preferably, the disassembling assembly comprises four groups of mounting blocks arranged at four ends of the mounting frame, one side of the mounting block is inserted with the mounting frame, and two ends of the other side of the mounting block are fixedly provided with two groups of mounting pipes.

[0009] Preferably, one end of the mounting pipe is fixedly provided with a mounting rod corresponding to the inner wall of one side of the protective shell, the surface of the mounting rod is slidably connected with the inner cavity of the mounting pipe, and an elastic spring is arranged between one end of the mounting rod and the inner wall of one end of the mounting pipe.

[0010] Preferably, the dustproof assembly comprises a protective grid fixedly arranged at the bottom of the shell cover and located at one side of the air inlet, a filter plate is arranged in a cavity formed between the inner side of the protective grid and the bottom of the shell cover, one end of the filter plate is provided with a blocking plate corresponding to one end of the protective grid, and one side of the blocking plate is clamped with one end of the protective grid.

[0011] Preferably, a fixing assembly for fixing the shell cover is arranged between the protective shell and the shell cover.

[0012] The fixing assembly comprises four groups of fixing pipes arranged at four corners of the inner wall of the protective shell and four groups of fixing rods arranged at corresponding positions below the shell cover, one end of the fixing rod penetrates through the shell cover and extends to one side of the shell cover and is screw-connected with the inner cavity of the fixing pipe.

[0013] Preferably, the fixing assembly further comprises four groups of fixing holes penetrating through four corners of the bottom of the shell cover, the inner part of the fixing hole is arranged in a matching manner with the bottom end of the fixing rod, and the bottom end of the fixing rod is inserted with the inner cavity of the fixing hole.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] The utility model discloses a protective shell, display window, shell cover, air inlet, air outlet, small -size mute fan and dustproof assembly cooperate using, the protective shell and shell cover adopt aluminum alloy material, can realize light weight and convenient heat dissipation, the display window is toughened glass, improves the impact resistance, utilizes the air inlet and two groups of air outlet and forms the directional air duct, then utilizes small -size mute fan drive airflow and forms the circulation, can ventilate and dehumidify and heat dissipation to the back light source body, then utilize dustproof assembly can carry out dust filtration to the air of entering the air inlet, thereby can protect the back light source body, solved the lack of protection to the back light source, and lead to its easy to be subjected to the problem of dust and moisture erosion, improved the safety of the internal circuit and photosensitive sensor of back light source in the dust environment, avoided the misfire or failure, improved the adaptability of device.

[0016] Other features and advantages of the present application will be set forth in the following description of the application, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the application. The objects and other advantages of the application can be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the present application;

[0018] Figure 2 It is a structural schematic view of the shell cover of the present application;

[0019] Figure 3 It is a structural schematic view of the backlight source body of the present application;

[0020] Figure 4 It is a structural schematic view of the telescopic spring of the present application;

[0021] Figure 5 It is a structural schematic view of the filter plate of the present application.

[0022] In the drawing: 1, backlight source body; 2, protective shell; 3, display window; 4, shell cover; 5, air inlet; 6, air outlet; 7, small silent fan; 8, mounting frame; 9, mounting groove; 10, photosensitive sensor; 11, mounting block; 12, mounting pipe; 13, mounting rod; 14, telescopic spring; 15, protective grid; 16, filter plate; 17, plugging plate; 18, fixed pipe; 19, fixed rod; 20, fixed hole. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] Please refer to Figures 1-5 The present application provides a technical solution: a self-adaptive brightness adjusting backlight source, comprising a backlight source body 1, a protective shell 2 is arranged on the outer side of the backlight source body 1, a display window 3 is arranged on the top of the protective shell 2, a shell cover 4 is adaptively arranged on the lower end of the protective shell 2, an air inlet 5 is formed on the bottom of the shell cover 4, two groups of air outlets 6 are formed on both sides of the air inlet 5 and at both ends of the bottom of the shell cover 4, and a dustproof assembly for preventing dust from entering the backlight source body 1 is arranged between the bottom of the shell cover 4 and one side of the air inlet 5 and one side of the two groups of air outlets 6, and a small silent fan 7 is arranged in the air inlet 5.

[0025] Specifically, by the cooperation of the protective shell 2, the display window 3, the shell cover 4, the air inlet 5, the air outlet 6, the small silent fan 7 and the dustproof assembly, the protective shell 2 and the shell cover 4 are made of aluminum alloy material, which can realize light weight and facilitate heat dissipation, the display window 3 is made of tempered glass, which improves the impact resistance, the air inlet 5 and the two groups of air outlets 6 form a directional air duct, and then the small silent fan 7 drives the airflow to form a circulation, which can ventilate, dehumidify and dissipate heat for the backlight source body 1, and then the dustproof assembly can filter the dust in the air entering the air inlet 5, thereby protecting the backlight source body 1, solving the problem that the backlight source is not protected and is easily eroded by dust and water vapor, improving the safety of the internal circuit and the photosensitive sensor 10 of the backlight source in a dusty environment, avoiding false triggering or failure, and improving the adaptability of the device.

[0026] As preferred, the surface of the backlight source body 1 is provided with a mounting frame 8, four corners of the top of the mounting frame 8 are provided with mounting grooves 9, and the inside of the mounting grooves 9 is provided with a photosensitive sensor 10. The mounting frame 8 and the inner wall of the protective shell 2 are provided with a dismounting assembly for mounting or dismounting the mounting frame 8.

[0027] Among them, the model of the photosensitive sensor 10 is Vishay VEML7700, and its core characteristics are:

[0028] Ultra-high sensitivity: the detection lower limit reaches 0.004 lux, suitable for extremely low illumination environment (such as mine emergency lighting);

[0029] Automatic range switching: built-in 16-bit ADC, no external circuit is needed to cover 0-120klux;

[0030] Filtron TM Technology: close to the spectral response of human eye (similar to CIE curve), brightness adjustment is more consistent with visual perception;

[0031] Low power consumption: working current is only 2μA (standby mode), prolonging the battery device endurance;

[0032] Accurate low light detection: in dark light scenes such as mines and underground pipelines, the backlight brightness can still be accurately triggered to increase;

[0033] Human eye adaptation: the spectral response matches the human eye, avoiding the misjudgment of traditional sensors in low blue light eye protection mode;

[0034] Energy-saving optimization: low power consumption is suitable for the mechanical energy recovery module in the patent. The sensor is suitable for scenes such as medical devices and mine emergency lighting, which have high requirements for low light detection accuracy.

[0035] As preferred, the disassembly and assembly component comprises the mounting block 11, the mounting pipe 12, the mounting rod 13 and the expansion spring 14, four groups of mounting blocks 11 are arranged at four ends of the mounting frame 8, one side of the mounting block 11 is inserted with the mounting frame 8, two groups of mounting pipes 12 are fixedly arranged at two ends of the other side of the mounting block 11, the mounting rod 13 is fixedly arranged at one end of the mounting pipe 12 corresponding to the inner wall of one side of the protective shell 2, the surface of the mounting rod 13 is slidably connected with the inner cavity of the mounting pipe 12, the expansion spring 14 is arranged between one end of the mounting rod 13 and the inner wall of one end of the mounting pipe 12, the mounting frame 8 is fixed through the four groups of mounting blocks 11, the mounting pipes 12 and the mounting rods 13, and the elastic pre-tightening force is provided by the expansion spring 14, so that the backlight source body 1 or the photosensitive sensor 10 can be quickly replaced, the industrial scene which needs frequent maintenance can be applied, the disassembly is not needed with tools, and the operation and maintenance cost is reduced.

[0036] As preferred, the dustproof component comprises the protective grid 15, the filter plate 16 and the blocking plate 17, the protective grid 15 is fixedly arranged at the bottom of the shell cover 4 and located at one side of the air inlet 5, the filter plate 16 is arranged in the cavity formed between the inner side of the protective grid 15 and the bottom of the shell cover 4, the blocking plate 17 is arranged at one end of the protective grid 15 corresponding to one end of the filter plate 16, and one side of the blocking plate 17 is clamped with one end of the protective grid 15.

[0037] Specifically, through the cooperation of the protective grid 15, the filter plate 16 and the blocking plate 17, the protective grid 15 can coarsely filter large-particle foreign matters, the filter plate 16 can finely filter dust and oil mist, and the blocking plate 17 is designed in a clamping mode to facilitate regular disassembly, cleaning or replacement of the filter plate 16, so that the device can protect the internal circuit and the photosensitive sensor 10 in a dusty environment (such as a factory or a mine), avoid false triggering or failure, reduce the maintenance frequency, and reduce the problem of reduced heat dissipation efficiency caused by dust accumulation.

[0038] As preferred, the protective shell 2 and the shell cover 4 are provided with a fixing component for fixing the shell cover 4; the fixing component comprises four groups of fixing pipes 18 arranged at four corners of the inner wall of the protective shell 2 and four groups of fixing rods 19 arranged at the corresponding positions below the shell cover 4, one end of the fixing rod 19 penetrates through the shell cover 4 and extends to one side of the shell cover 4 to be threadedly connected with the inner cavity of the fixing pipe 18, the fixing component further comprises four groups of fixing holes 20 penetrating through the four corners of the bottom of the shell cover 4, the inside of the fixing hole 20 is arranged in a matched manner with the bottom end of the fixing rod 19, and the bottom end of the fixing rod 19 is inserted with the inner cavity of the fixing hole 20, which can be applied in a vibration scene such as vehicle-mounted or mine use, to avoid accidental falling of the shell cover 4, and meanwhile, the shell cover 4 and the protective shell 2 are provided with a sealing gasket, so that the waterproof and dustproof sealing property is improved.

[0039] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adaptive brightness adjustment backlight, characterized by: The utility model provides a back light source body (1) is provided with protective housing (2) outside, the top of protective housing (2) is provided with display window (3), the lower end of protective housing (2) is provided with shell cover (4) in adaptation, the bottom of shell cover (4) is provided with air inlet (5), both sides of air inlet (5) and the both ends of bottom of shell cover (4) are provided with two groups of air outlet (6), and one side of air inlet (5) and one side of two groups of air outlet (6) are provided with dustproof assembly for dustproof back light source body (1) between the bottom of shell cover (4), the inside of air inlet (5) is provided with small mute fan (7).

2. The self-adapting brightness adjusting backlight source according to claim 1, wherein: The surface of the back light source body (1) is provided with a mounting frame (8), the mounting frame (8) is provided with a mounting slot (9) at the four corners of the top, and the inside of the mounting slot (9) is provided with a photosensitive sensor (10). The mounting frame (8) and the inner wall of the protective housing (2) are provided with a dismounting assembly for mounting or dismounting the mounting frame (8).

3. The self-adapting brightness adjusting backlight source according to claim 2, wherein: The dismounting assembly includes four groups of mounting blocks (11) arranged at the four ends of the mounting frame (8). One side of the mounting block (11) is inserted into the mounting frame (8), and the other side of the mounting block (11) is fixedly provided with two groups of mounting pipes (12) at both ends.

4. The self-adapting brightness adjusting backlight source according to claim 3, wherein: One end of the mounting pipe (12) is fixedly provided with a mounting rod (13) corresponding to the inner wall of one side of the protective housing (2). The surface of the mounting rod (13) is slidably connected with the inner cavity of the mounting pipe (12). The mounting rod (13) and the inner wall of one end of the mounting pipe (12) are provided with a telescopic spring (14).

5. The self-adapting brightness adjusting backlight source according to claim 1, wherein: The dustproof assembly includes a protective grid (15) fixedly installed at the bottom of the shell cover (4) and located at one side of the air inlet (5). The inner side of the protective grid (15) is provided with a filter plate (16) corresponding to the cavity formed between the bottom of the shell cover (4). One end of the filter plate (16) is provided with a blocking plate (17) corresponding to one end of the protective grid (15), and one side of the blocking plate (17) is clamped with one end of the protective grid (15).

6. The self-adapting brightness adjusting backlight source according to claim 1, wherein: A fixing assembly is arranged between the protective housing (2) and the shell cover (4) for fixing the shell cover (4). The fixing assembly includes four groups of fixing pipes (18) installed at the four corners of the inner wall of the protective housing (2) and four groups of fixing rods (19) arranged below the shell cover (4) corresponding to the positions. One end of the fixing rod (19) penetrates through the shell cover (4) and extends to the inner cavity of the fixing pipe (18) on one side of the shell cover (4).

7. The self-adapting brightness adjusting backlight source according to claim 6, wherein: The fixing assembly further includes four groups of fixing holes (20) penetrating through the four corners of the bottom of the shell cover (4). The inside of the fixing hole (20) is provided with the bottom end of the fixing rod (19) in adaptation, and the bottom end of the fixing rod (19) is inserted into the inner cavity of the fixing hole (20).

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