CN113514395A

CN113514395A - Detection apparatus for LED display screen luminance uniformity proportion

Info

Publication number: CN113514395A
Application number: CN202110466531.XA
Authority: CN
Inventors: 方怀舟
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2021-10-19

Abstract

The invention discloses a device for detecting the brightness uniformity ratio of an LED display screen, which comprises a base, wherein a lifting adjusting device is arranged in the base, vertical columns are symmetrically and slidably connected in the base, four vertical columns are all connected with the lifting adjusting device through threads, the surface of the base is fixedly connected with a detecting mechanism, one ends of the four vertical columns, far away from the base, are fixedly connected with a lifting plate, a clamping device is slidably connected in the lifting plate, a turntable is rotatably arranged at the center of the inner part of the lifting plate, an angle adjusting device is fixedly connected to the lower surface of the base and is matched with the clamping device for installation, the device for detecting the brightness uniformity ratio of the LED display screen can avoid errors caused by manual operation, has adaptability and can be suitable for detecting different types of LED display screens within a certain range, simple structure, the practicality is strong.

Description

Detection apparatus for LED display screen luminance uniformity proportion

Technical Field

The invention relates to the technical field of LED display screens, in particular to a device for detecting the brightness uniformity proportion of an LED display screen.

Background

The LED display screen is an electronic display screen formed by LED lattices, the display content forms of the screen, such as characters, animations, pictures and videos, are changed in time by the red and green lamp beads which are turned on and off, and the display control of the components is carried out through a modular structure. Mainly comprises a display module, a control system and a power supply system.

The existing detection method for the brightness uniformity proportion of the LED display screen is to fix the LED display screen at a certain position and face a tester, so that the LED display screen is electrified to be in a working state, then the tester holds a brightness tester to move around the arc direction of the brightness tester, and a certain error is easily caused due to manual operation.

Disclosure of Invention

The invention aims to provide a device for detecting the brightness uniformity proportion of an LED display screen, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a detection apparatus for LED display screen luminance homogeneity proportion, includes the base, the internally mounted of base has lift adjustment device, the inside symmetrical sliding connection of base has the upstand, four the upstand all passes through threaded connection with lift adjustment device, base fixed surface is connected with detection mechanism, four the one end fixedly connected with lifter plate of base is kept away from to the upstand, the inside sliding connection of lifter plate has clamping device, the inside center department of lifter plate rotates installs the carousel, the lower fixed surface of base is connected with angle adjusting device, angle adjusting device and clamping device cooperation installation, angle adjusting device and carousel fixed connection, angle adjusting device and detection mechanism cooperation installation.

Preferably, the lifting adjusting device comprises a mounting groove, a first motor seat, a servo motor, a first bevel gear, a second bevel gear, a third bevel gear, connecting columns, square grooves and a screw rod, the mounting groove is formed in the center of the bottom of the base, the first motor seat is fixedly connected to the surface of the mounting groove, the servo motor is fixedly connected to the surface of the first motor seat, the first bevel gear is fixedly connected to the output end of the servo motor, the connecting columns are symmetrically and rotatably connected to the inside of the base, the number of the connecting columns is four, the surfaces of the connecting columns and one end, close to the mounting groove, of the connecting column are fixedly connected with the second bevel gear, the four second bevel gears are meshed with the first bevel gear, the third bevel gear is meshed with the tops of the other four second bevel gears, the square grooves are symmetrically formed in the surface of the base, and the number of the square grooves is four, the third bevel gear is positioned in the square grooves, a screw rod is fixedly connected above the third bevel gear, and the screw rod is connected with the vertical column through threads.

Preferably, the clamping device comprises a photoelectric sensor, a first electric telescopic rod, a movable column, a clamping plate, a trapezoidal groove, an arc-shaped through hole, an arc-shaped groove, a second electric telescopic rod, a movable plate, a circular hole and a rack, the upper surface of the lifting plate is symmetrically provided with the arc-shaped through hole, the surface of the arc-shaped through hole is provided with the arc-shaped groove, the surface of the arc-shaped groove is slidably provided with the movable column, the movable column is slidably mounted with the surface of the arc-shaped through hole, the first electric telescopic rod is mounted inside the movable column, one end of the first electric telescopic rod, far away from the movable column, is fixedly connected with the clamping plate, the surface of the clamping plate is provided with the trapezoidal groove, one ends of the two movable columns, near the base, are fixedly connected with the second electric telescopic rod, one ends of the two second electric telescopic rods, far away from the movable column, are fixedly connected with the movable plate, the center of the movable plate is provided with the circular hole, and the surface of the round hole is fixedly connected with a rack.

Preferably, the surface of the trapezoid groove is fixedly connected with a sponge pad.

Preferably, angle adjusting device includes second motor cabinet, step motor, drive gear, square, quad slit, disc and third electric telescopic handle, the lateral wall fixedly connected with second motor cabinet of lifter plate, the fixed surface of second motor cabinet is connected with step motor, step motor's output fixedly connected with drive gear, drive gear's top fixedly connected with square, the inside symmetry fixedly connected with third electric telescopic handle of carousel, two the one end fixedly connected with disc of carousel is kept away from to third electric telescopic handle, the quad slit has been seted up to disc surface center department, square and the cooperation installation of quad slit.

Preferably, the inside of carousel has the connecting rod along centrosymmetric sliding connection, three the one end that the carousel was kept away from to the connecting rod all with disc fixed connection.

Preferably, detection mechanism includes arc, slide rail, drive block, rotation post and detection module, base fixed surface is connected with the arc, the surface mounting of arc has the slide rail, slide rail surface slidable mounting has the drive block, the top fixedly connected with rotation post of drive block, the one end that the drive block was kept away from on the surface of rotation post installs detection module.

Preferably, both ends of the slide rail are fixedly connected with limit blocks.

Compared with the prior art, the invention has the beneficial effects that:

the invention arranges the LED display screen on the surface of the turntable to adjust the angle, and the LED display screen is clamped by the clamping device, thereby ensuring the stability of the arrangement and facilitating the subsequent detection work, the lifting adjusting device adjusts the height of the lifting plate and facilitates the adjustment of the upper and lower positions of the LED display screen, the LED display screen has adaptability and can be suitable for the detection of the display screens with different specifications within a certain range, the driving block slides on the surface of the slide rail, the surface of the slide rail can be marked with scales for convenient observation, the rotating column and the detection module are driven to detect the LED display screen with different angles, after the clamping, the transmission gear is driven to rotate by the stepping motor, under the condition that the second electric telescopic rod is contracted, the third electric telescopic rod is contracted, the square block is separated from the square hole, the transmission gear is matched with the rack, the two movable columns and the clamping plate can be driven to rotate the angle within a certain range, and then drive the LED display screen and rotate certain angle, carry out the angle modulation, be convenient for cooperate with detection module, avoid manual operation to bring the error.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a second schematic view of the overall structure of the present invention;

FIG. 3 is a third schematic view of the overall structure of the present invention;

FIG. 4 is a fourth schematic view of the overall structure of the present invention;

FIG. 5 is a schematic diagram of the square hole structure of the present invention.

In the figure: 1. a base; 2. a lift adjustment device; 3. a vertical post; 4. a lifting plate; 5. a detection mechanism; 6. a clamping device; 7. a turntable; 8. an angle adjusting device; 9. mounting grooves; 10. a first motor mount; 11. a servo motor; 12. a first bevel gear; 13. a second bevel gear; 14. a third bevel gear; 15. connecting columns; 16. a square groove; 17. a screw rod; 18. a photosensor; 19. a first electric telescopic rod; 20. a movable post; 21. a splint; 22. a trapezoidal groove; 23. an arc-shaped through hole; 24. an arc-shaped slot; 25. a second electric telescopic rod; 26. a movable plate; 27. a circular hole; 28. a rack; 29. a sponge cushion; 30. a second motor mount; 31. a stepping motor; 32. a transmission gear; 33. a square block; 34. a square hole; 35. a disc; 36. a third electric telescopic rod; 37. a limiting block; 38. a connecting rod; 39. an arc-shaped plate; 40. a slide rail; 41. a drive block; 42. rotating the column; 43. and a detection module.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, fig. 2, fig. 3 and fig. 4, the present invention provides a technical solution: the utility model provides a detection apparatus for LED display screen luminance homogeneity proportion, includes base 1, the internally mounted of base 1 has lift adjustment device 2, the inside symmetry sliding connection of base 1 has upstand 3, four upstand 3 all passes through threaded connection with

lift adjustment device

2, 1 fixed surface of base is connected with detection mechanism 5, four upstand 3 keeps away from base 1's one end fixedly connected with lifter plate 4, the inside sliding connection of lifter plate 4 has clamping device 6, 4 inside centers department of lifter plate rotates installs carousel 7, the lower fixed surface of base 1 is connected with angle adjusting device 8,

angle adjusting device

8 and 6 cooperation installations of clamping device,

angle adjusting device

8 and 7 fixed connection of carousel,

angle adjusting device

8 and 5 cooperation installations of detection mechanism.

Referring to fig. 2, 3 and 4, the lifting adjusting device 2 includes a mounting groove 9, a first motor base 10, a servo motor 11, a first bevel gear 12, a second bevel gear 13, a third bevel gear 14, a connecting column 15, a square groove 16 and a screw rod 17, the mounting groove 9 is formed in the center of the bottom of the base 1, the first motor base 10 is fixedly connected to the surface of the mounting groove 9, the servo motor 11 is fixedly connected to the surface of the first motor base 10, the first bevel gear 12 is fixedly connected to the output end of the servo motor 11, the connecting columns 15 are symmetrically and rotatably connected to the inside of the base 1, the number of the connecting columns 15 is four, second bevel gears 13 are fixedly connected to the surfaces of the connecting columns 15 and one ends of the connecting columns 15 close to the mounting groove 9, the four second bevel gears 13 are engaged with the first bevel gear 12, the third bevel gears 14 are engaged with the tops of the other four second bevel gears 13, the surface of the base 1 is symmetrically provided with four square grooves 16, the number of the square grooves 16 is four, the third bevel gear 14 is located in the square grooves 16, a screw rod 17 is fixedly connected above the third bevel gear 14, the screw rod 17 is in threaded connection with the vertical column 3, and before detection, the screw rod 17 is controlled by a controller, the servo motor 11 is started to drive the first bevel gear 12 to rotate, the first bevel gear 12 is meshed with four second bevel gears 13, and is driven by a connecting column 15 and the third bevel gear 14 to drive the screw rod 17 to rotate, so that the vertical column 3 is driven to ascend or descend within a certain distance in a certain range to adjust the heights of the lifting plate 4 and the LED display screen, and the detection is performed by matching with the detection module 43, so that the whole body further has adaptability.

Referring to fig. 1, 2 and 3, the clamping device 6 includes a photoelectric sensor 18, a first electric telescopic rod 19, a movable column 20, a clamping plate 21, a trapezoidal groove 22, an arc-shaped through hole 23, an arc-shaped groove 24, a second electric telescopic rod 25, a movable plate 26, a circular hole 27 and a rack 28, the upper surface of the lifting plate 4 is symmetrically provided with the arc-shaped through hole 23, the surface of the arc-shaped through hole 23 is provided with the arc-shaped groove 24, the surface of the arc-shaped groove 24 is slidably provided with the movable column 20, the movable column 20 is slidably mounted with the surface of the arc-shaped through hole 23, the first electric telescopic rod 19 is mounted inside the movable column 20, one end of the first electric telescopic rod 19, which is far away from the movable column 20, is fixedly connected with the clamping plate 21, the surface of the clamping plate 21 is provided with the trapezoidal groove 22, and one ends of the two movable columns 20, which are close to the base 1, are fixedly connected with the second electric telescopic rod 25, one end of each of the two second electric telescopic links 25, which is far away from the movable column 20, is fixedly connected to a movable plate 26, a circular hole 27 is formed in the center of the movable plate 26, a rack 28 is fixedly connected to the surface of the circular hole 27, the controller controls the third electric telescopic link 36 to extend to drive the disc 35 to move downwards, relative sliding is generated between the three connecting rods 38 and the rotary disc 7, when the third electric telescopic link 36 extends to the longest length, the three connecting rods 38 are not separated from the rotary disc 7, the square blocks 33 are matched with the square holes 34, and the stepping motor 31 is started to drive the transmission gear 32 to rotate, further drive the disc 35 to rotate, further drive the rotary disc 7 to rotate for a certain angle, further drive the LED display to rotate for a certain angle until the distance between the photoelectric sensor 18 and the LED display is smaller than a preset value, and the controller controls the third electric telescopic link 36 to retract, so as to drive the disc 35 to be far away from the transmission gear 32, square 33 and the separation of quad slit 34, first electric telescopic handle 19 extension simultaneously drives two splint 21 and is close to towards the LED display screen, until LED display screen surface and foam-rubber cushion 29 in close contact with, and then accomplish the centre gripping to the LED display screen.

Referring to fig. 1, a sponge pad 29 is fixedly connected to the surface of the trapezoidal groove 22 to prevent the LED display screen from being worn due to contact with the surface of the trapezoidal groove 22.

Referring to fig. 2, 3 and 5, the angle adjusting device 8 includes a second motor base 30, a stepping motor 31, a transmission gear 32, a square block 33, a square hole 34, a circular disc 35 and third electric telescopic rods 36, the side wall of the lifting plate 4 is fixedly connected with the second motor base 30, the surface of the second motor base 30 is fixedly connected with the stepping motor 31, the output end of the stepping motor 31 is fixedly connected with the transmission gear 32, the square block 33 is fixedly connected above the transmission gear 32, the third electric telescopic rods 36 are symmetrically and fixedly connected inside the rotary disc 7, one ends of the two third electric telescopic rods 36 far away from the rotary disc 7 are fixedly connected with the circular disc 35, the center of the surface of the circular disc 35 is provided with the square hole 34, the square block 33 and the square hole 34 are installed in a matching manner, so as to adjust the angle of the LED display screen, the controller controls the second electric telescopic rod 25 to contract to drive the movable plate 26 to ascend for a certain distance, and then the transmission gear 32 is matched with the rack 28 to drive the movable plate 26 and the movable column 20 to rotate for a certain angle, and the LED display screen can be driven to rotate for a certain angle due to the fact that the LED display screen is clamped by the two clamping plates 21 at the moment, so that the LED display screen can be conveniently matched with the detection module 43, and the overall adaptability is further improved.

Referring to fig. 2 and 3, the inside of the turntable 7 is connected with connecting rods 38 symmetrically along the center, and one ends of the three connecting rods 38 away from the turntable 7 are all fixedly connected with the disc 35 to play a role in connection and transmission, so that the rotation of the disc 35 can drive the turntable 7 to rotate.

Referring to fig. 1 and 3, the detection mechanism 5 includes an arc plate 39, a slide rail 40, a driving block 41, a rotating column 42 and a detection module 43, the arc plate 39 is fixedly connected to the surface of the base 1, the slide rail 40 is installed on the surface of the arc plate 39, the driving block 41 is installed on the surface of the slide rail 40 in a sliding manner, the rotating column 42 is fixedly connected to the upper side of the driving block 41, the detection module 43 is installed at one end, far away from the driving block 41, of the surface of the rotating column 42, the driving block 41 is controlled by the controller to slide on the surface of the slide rail 40, and the rotating column 42 and the detection module 43 are further driven to perform detection on the LED display screen at multiple angles, so that the detection mechanism has adaptability.

Referring to fig. 1 and 4, both ends of the slide rail 40 are fixedly connected with a limiting block 37 to prevent the driving block 41 from separating from the slide rail 40.

The working principle is as follows: a controller can be installed on the side wall of the base 1, the first electric telescopic rod 19, the second electric telescopic rod 25, the third electric telescopic rod 36, the photoelectric sensor 18, the servo motor 11, the driving block 41, the stepping motor 31 and the detection module 43 are all connected with the controller through wires, the controller is precisely controlled by a computer program, the detection module 43 has a structure similar to that of the existing brightness tester, the working principle is the same, the LED display screen is placed on the surface of the turntable 7 and is electrified to operate, the two photoelectric sensors 18 sense the distance between the LED display screen and the surface of the LED display screen exceeds a preset value, a signal is transmitted to the controller, the controller controls the third electric telescopic rod 36 to extend to drive the disc 35 to move downwards, relative sliding is generated between the three connecting rods 38 and the turntable 7, when the third electric telescopic rod 36 extends to the longest, the three connecting rods 38 are not separated from the turntable 7, the square block 33 is matched with the square hole 34, and simultaneously the stepping motor 31 is started to drive the transmission gear 32 to rotate, and further drive the disc 35 to rotate, and further drive the turntable 7 to rotate for a certain angle, and further drive the LED display screen to rotate for a certain angle until the photoelectric sensor 18 senses that the distance between the photoelectric sensor and the LED display screen is smaller than a preset value, the controller controls the third electric telescopic rod 36 to contract, and drives the disc 35 to be away from the transmission gear 32, the square block 33 is separated from the square hole 34, and simultaneously the first electric telescopic rod 19 extends to drive the two clamping plates 21 to approach towards the LED display screen until the surface of the LED display screen is in close contact with the sponge pad 29, so as to clamp the LED display screen, and ensure the placing stability of the LED display screen, the controller controls the driving block 41 to slide on the surface of the sliding rail 40, and further drives the rotating column 42 and the detection module 43 to detect a plurality of angles of the LED display screen, the adaptability is provided, before detection, the controller controls the servo motor 11 to start to drive the first bevel gear 12 to rotate, the first bevel gear 12 is meshed with four second bevel gears 13 and is driven by the connecting column 15 and the third bevel gear 14 to drive the screw rod 17 to rotate, further the vertical column 3 is driven to ascend or descend for a certain distance within a certain range to adjust the heights of the lifting plate 4 and the LED display screen to be matched with the detection module 43 for detection, so that the whole body further has the adaptability, in the detection process, the controller controls the second electric telescopic rod 25 to contract to drive the movable plate 26 to ascend for a certain distance, further the transmission gear 32 is matched with the rack 28 to drive the movable plate 26 and the movable column 20 to rotate for a certain angle, and at the moment, the LED display screen is clamped by the two clamping plates 21 to further drive the LED display screen to rotate for a certain angle, the matching with the detection module 43 is facilitated, and the overall adaptability is further increased.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a detection apparatus for LED display screen luminance uniformity proportion, includes base (1), its characterized in that: the lifting adjusting device (2) is arranged in the base (1), the inner part of the base (1) is symmetrically and slidably connected with vertical columns (3), the four vertical columns (3) are all connected with the lifting adjusting device (2) through threads, the surface of the base (1) is fixedly connected with a detection mechanism (5), one ends of the four upright posts (3) far away from the base (1) are fixedly connected with a lifting plate (4), the interior of the lifting plate (4) is connected with a clamping device (6) in a sliding way, the center of the interior of the lifting plate (4) is rotatably provided with a turntable (7), the lower surface of the base (1) is fixedly connected with an angle adjusting device (8), the angle adjusting device (8) is matched with the clamping device (6) and is fixedly connected with the turntable (7), the angle adjusting device (8) is installed with the detecting mechanism (5) in a matched mode.

2. The device for detecting the brightness uniformity ratio of the LED display screen according to claim 1, wherein: the lifting adjusting device (2) comprises a mounting groove (9), a first motor base (10), a servo motor (11), a first bevel gear (12), a second bevel gear (13), a third bevel gear (14), a connecting column (15), a square groove (16) and a screw rod (17), the mounting groove (9) is formed in the center of the bottom of the base (1), the first motor base (10) is fixedly connected to the surface of the mounting groove (9), the servo motor (11) is fixedly connected to the surface of the first motor base (10), the first bevel gear (12) is fixedly connected to the output end of the servo motor (11), the connecting columns (15) are symmetrically and rotatably connected to the inside of the base (1), the number of the connecting columns (15) is four, and the second bevel gear (13) is fixedly connected to the surface of the connecting column (15) and one end, close to the mounting groove (9), of the connecting column (15), the four second bevel gears (13) are meshed with the first bevel gear (12), the other four second bevel gears (13) are meshed with the third bevel gear (14), square grooves (16) are symmetrically formed in the surface of the base (1), the number of the square grooves (16) is four, the third bevel gear (14) is located in the square grooves (16), a lead screw (17) is fixedly connected to the upper portion of the third bevel gear (14), and the lead screw (17) is connected with the vertical column (3) through threads.

3. The device for detecting the brightness uniformity ratio of the LED display screen according to claim 1, wherein: the clamping device (6) comprises a photoelectric sensor (18), a first electric telescopic rod (19), a movable column (20), a clamping plate (21), a trapezoidal groove (22), an arc-shaped through hole (23), an arc-shaped groove (24), a second electric telescopic rod (25), a movable plate (26), a round hole (27) and a rack (28), wherein the arc-shaped through hole (23) is symmetrically formed in the upper surface of the lifting plate (4), the arc-shaped groove (24) is formed in the surface of the arc-shaped through hole (23), the movable column (20) is slidably mounted on the surface of the arc-shaped groove (24), the movable column (20) and the arc-shaped through hole (23) are slidably mounted, the first electric telescopic rod (19) is mounted inside the movable column (20), the clamping plate (21) is fixedly connected to one end, far away from the movable column (20), of the first electric telescopic rod (19), and the trapezoidal groove (22) is formed in the surface of the clamping plate (21), two one end fixedly connected with second electric telescopic handle (25) that activity post (20) are close to base (1), two one end fixed connection fly leaf (26) of activity post (20) are kept away from in second electric telescopic handle (25), round hole (27) have been seted up in the center department of fly leaf (26), the fixed surface of round hole (27) is connected with rack (28).

4. The device for detecting the brightness uniformity ratio of the LED display screen according to claim 3, wherein: the surface of the trapezoid groove (22) is fixedly connected with a sponge pad (29).

5. The device for detecting the brightness uniformity ratio of the LED display screen according to claim 1, wherein: the angle adjusting device (8) comprises a second motor base (30), a stepping motor (31), a transmission gear (32), a square block (33), a square hole (34), a disc (35) and a third electric telescopic rod (36), a second motor base (30) is fixedly connected with the side wall of the lifting plate (4), a stepping motor (31) is fixedly connected with the surface of the second motor base (30), the output end of the stepping motor (31) is fixedly connected with a transmission gear (32), a square block (33) is fixedly connected above the transmission gear (32), third electric telescopic rods (36) are symmetrically and fixedly connected inside the rotary table (7), a disc (35) is fixedly connected at one end of each of the two third electric telescopic rods (36) far away from the rotary table (7), a square hole (34) is formed in the center of the surface of the disc (35), and the square block (33) is installed in a matched mode with the square hole (34).

6. The device for detecting the brightness uniformity ratio of the LED display screen according to claim 5, wherein: the inside of carousel (7) is connected with connecting rod (38) along centrosymmetric sliding, and is three the one end that carousel (7) were kept away from in connecting rod (38) all with disc (35) fixed connection.

7. The device for detecting the brightness uniformity ratio of the LED display screen according to claim 1, wherein: detection mechanism (5) include arc (39), slide rail (40), drive block (41), rotation post (42) and detection module (43), base (1) fixed surface is connected with arc (39), the surface mounting of arc (39) has slide rail (40), slide rail (40) surface slidable mounting has drive block (41), the top fixedly connected with of drive block (41) rotates post (42), detection module (43) are installed to the one end of keeping away from drive block (41) on the surface of rotation post (42).

8. The device for detecting the brightness uniformity ratio of the LED display screen according to claim 7, wherein: the two ends of the sliding rail (40) are fixedly connected with limiting blocks (37).