CN113960821B - Direct type backlight source detection device of LED liquid crystal display screen and detection method thereof - Google Patents
Direct type backlight source detection device of LED liquid crystal display screen and detection method thereof Download PDFInfo
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- CN113960821B CN113960821B CN202111131377.7A CN202111131377A CN113960821B CN 113960821 B CN113960821 B CN 113960821B CN 202111131377 A CN202111131377 A CN 202111131377A CN 113960821 B CN113960821 B CN 113960821B
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- 238000001514 detection method Methods 0.000 title claims abstract description 95
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 25
- 230000002457 bidirectional effect Effects 0.000 claims description 15
- 230000000712 assembly Effects 0.000 claims description 11
- 238000000429 assembly Methods 0.000 claims description 11
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0425—Test clips, e.g. for IC's
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/44—Testing lamps
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a direct type backlight source detection device and a detection method of an LED liquid crystal display screen, and relates to the technical field of backlight source detection. Including detecting the platform, be provided with the interface of being connected with the backlight on the detecting the bench, the recess has been seted up at the top of detecting the platform, the inboard of detecting platform top recess is placed the board and runs through and with place board sliding connection, place the bottom of board and spring A's one end is fixed, spring A's the other end is fixed at the top of detecting the platform, the inside of detecting the platform is provided with the fixed subassembly that fixes the backlight and the driven assembly of control fixed subassembly, be fixed with the horizontal pole on the inner wall of detecting the platform. Through the fixed subassembly of driven component cooperation that sets up, can place the backlight on placing the board, will place the board and push down, can control splint and fix the backlight, avoided the conventional problem that uses bolt fastening backlight comparatively troublesome and reduce detection efficiency.
Description
Technical Field
The invention relates to the technical field of backlight detection, in particular to a direct type backlight detection device of an LED liquid crystal display screen and a detection method thereof.
Background
A backlight is a light source located behind a liquid crystal display, and its luminous effect directly affects the visual effect of the liquid crystal display module. The liquid crystal display itself does not emit light, it displays graphics or it is the result of modulating light. In the design of backlights, the choice of the light source used is important. The light source used determines the power consumption, brightness, color and other photoelectric parameters of the backlight source and also determines the service conditions, service life and other characteristics of the backlight source.
In the structural design of the liquid crystal display, the selection of the backlight source is very critical, and the selected backlight source determines the power consumption, brightness, color and other photoelectric parameters of the liquid crystal display and also determines the service conditions, service life and other characteristics of the liquid crystal display. Currently commonly used backlights for liquid crystal displays include electroluminescent light sources, linear light sources such as cold cathode fluorescent tubes (CCFL) and LEDs, and the like.
When the existing LED liquid crystal display screen direct type backlight source is detected, the backlight source needs to be fixed, the existing detection device is troublesome in fixing the backlight source, the backlight source needs to be fixed on a detection table through bolts, the operation is inconvenient, the detection efficiency of the backlight source is reduced, and in view of the above, the LED liquid crystal display screen direct type backlight source detection device and the detection method are provided.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a direct type backlight source detection device and a detection method for an LED liquid crystal display screen, and solves the problems in the background art.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a straight following formula backlight detection device of LED liquid crystal display, includes the detection platform, be provided with the interface of being connected with the backlight on the detection platform, the recess has been seted up at the top of detection platform, the inboard of detection platform top recess is placed the board and is run through and with place board sliding connection, the bottom of placing the board is fixed with spring A's one end, spring A's the other end is fixed at the top of detection platform, the inside of detection platform is provided with the fixed subassembly that carries out fixed subassembly and the driven assembly of control fixed subassembly to the backlight, be fixed with the horizontal pole on the inner wall of detection platform, the top of detection platform is fixed with the montant.
Preferably, the fixed subassembly includes the slider, the slider runs through the left side of detecting the platform and with detect platform sliding connection, the right side of slider is fixed with the one end of branch, the other end of branch runs through splint and with splint sliding connection, the left side of splint is fixed with spring B's one end, spring B's the other end is fixed on the right side of slider, the bottom of splint is fixed with the rubber pad, the recess has been seted up at the top of splint, the top of splint is provided with the control assembly of control splint.
Preferably, the driven component comprises a loop bar, one end of the loop bar is hinged to the left side of the placing plate, the other end of the loop bar is penetrated by a fixing bar and is in sliding connection with the fixing bar, the bottom of the fixing bar is fixed with one end of a spring C, the other end of the spring C is fixed on the inner wall of the loop bar, the top of the fixing bar is hinged to the bottom of the clamping plate, a limiting component for limiting the fixing bar is arranged on the loop bar, and a clamping groove is formed in the fixing bar.
Preferably, the control assembly comprises a rectangular frame, the rectangular frame is slidably mounted at the top of the detection table, a connecting rod is fixed on the inner wall of the rectangular frame, the connecting rod penetrates through a T-shaped push plate and is slidably connected with the T-shaped push plate, the top of the T-shaped push plate is fixed with one end of a spring D, the other end of the spring D is fixed on the inner wall of the rectangular frame, the T-shaped push plate penetrates through the bottom of the rectangular frame and the top of the detection table and is slidably connected with the rectangular frame and the detection table, and a clamping groove is formed in the right side of the T-shaped push plate.
Preferably, the control assembly further comprises a clamping rod, the right side of the clamping rod is penetrated by the connecting rod and is in sliding connection with the connecting rod, the right side of the connecting rod is fixed on the inner wall of the rectangular frame, the right side of the clamping rod is fixed with one end of a spring E, the other end of the spring E is fixed on the inner wall of the rectangular frame, the top of the clamping rod is hinged with one end of a bidirectional telescopic rod, the middle position of the bidirectional telescopic rod is hinged with the inner wall of the rectangular frame, the other end of the bidirectional telescopic rod is hinged with the bottom of a push rod, and the push rod penetrates the right side of the rectangular frame and is in sliding connection with the rectangular frame.
Preferably, the limiting component comprises an L-shaped inserted bar, the L-shaped inserted bar penetrates through the sleeve bar and is in sliding connection with the sleeve bar, the L-shaped inserted bar is fixed with one end of the spring F, and the other end of the spring F is fixed on the sleeve bar.
Preferably, the control assembly is provided with two groups, and the two groups of control assemblies are symmetrically arranged by taking the central line of the detection table as a symmetrical axis.
Preferably, the fixed component and the driven component are both provided with two groups, and the two groups of driven components and the driven component are both symmetrically arranged by taking the central line of the detection table as a symmetrical axis.
Preferably, the limiting assemblies are provided with two groups, and the two groups of limiting assemblies are symmetrically arranged by taking the central line of the detection table as a symmetrical axis.
The direct type backlight source detection method of the LED liquid crystal display screen comprises the following steps:
s1, placing a backlight source, placing the backlight source on a placing plate, inserting a backlight source connector into an interface on a detection table, pressing the placing plate downwards, and pulling a clamping plate to extend out of the inner side of a groove of the detection table through a sleeve rod and a fixing rod by the placing plate.
S2, releasing the limit, enabling the loop bar to rotate clockwise with the fixed bar and the position hinged with the clamping plate as the circle center, enabling the cross bar to abut against the L-shaped inserting bar, enabling the L-shaped inserting bar to move leftwards and withdraw from the clamping groove on the fixed bar, and further releasing the limit on the fixed bar.
S3, fixing the backlight source, enabling the clamping plate to move rightwards along with the rectangular frame, enabling the ejector rod to abut against the vertical rod, enabling the ejector rod to move leftwards, enabling the ejector rod to pull the clamping rod to move rightwards through the bidirectional telescopic rod, enabling the clamping rod to withdraw from the clamping groove in the T-shaped pushing plate, releasing the limit of the T-shaped pushing plate, enabling the T-shaped pushing plate to push the clamping plate to move downwards under the action of the spring D, and clamping the backlight source.
S4, the detection is finished, after the backlight source detection is finished, the sliding block is pulled upwards, the sliding block drives the clamping plate to move upwards through the supporting rod, the fixation of the backlight source is relieved, the backlight source is taken down, the placing plate is sprung upwards under the action of the spring A, the placing plate props the sleeve rod to slightly rotate by a certain angle, the fixing rod moves upwards to enable the L-shaped inserting rod to be reinserted into the clamping groove on the fixing rod, the placing plate moves upwards to push the clamping plate to move leftwards through the fixing rod and the sleeve rod to reset and retract into the detection table, and when the clamping plate moves upwards, the clamping rod is reinserted into the clamping groove on the right side of the T-shaped pushing plate, the T-shaped pushing plate is reset, and the whole device resets.
(III) beneficial effects
The invention provides a direct type backlight source detection device and a detection method for an LED liquid crystal display screen. The beneficial effects are as follows:
(1) According to the direct type backlight source detection device and the direct type backlight source detection method of the LED liquid crystal display screen, the arranged driven component is matched with the fixed component, so that when the backlight source is placed on the placing plate, the placing plate is pressed downwards, the clamping plate can be controlled to fix the backlight source, and the problems that the conventional use of bolts to fix the backlight source is troublesome and the detection efficiency is reduced are solved.
(2) According to the direct type backlight source detection device and the direct type backlight source detection method of the LED liquid crystal display screen, the rubber pad arranged at the bottom of the clamping plate can ensure that the backlight source is not damaged when the clamping plate is used for fixing the backlight source.
(3) According to the direct type backlight source detection device of the LED liquid crystal display screen and the detection method thereof, through the driven component and the limiting component, when the placing plate is pushed to move downwards, the placing plate can move rightwards to extend out through the fixing rod and the loop bar pulling clamping plate, at the moment, the limiting component releases the limitation on the fixing rod, and then the clamping plate can move downwards normally.
Drawings
FIG. 1 is a schematic diagram of the overall device of the present invention in elevation;
FIG. 2 is a schematic cross-sectional elevation view of the present invention;
FIG. 3 is a schematic view of the enlarged structure of FIG. 2A according to the present invention;
FIG. 4 is an enlarged schematic view of the structure B of FIG. 2 according to the present invention;
FIG. 5 is an enlarged schematic view of the structure of FIG. 4C according to the present invention;
FIG. 6 is a schematic diagram of the rear view of the loop bar, securing bar and spacing assembly of the present invention;
fig. 7 is a schematic view of a structure of the splint of the present invention.
In the figure: 1. a detection table; 2. a driven assembly; 21. a loop bar; 22. a fixed rod; 23. a spring C; 3. a control assembly; 31. a rectangular frame; 32. a connecting rod; 33. a T-shaped push plate; 34. a spring D; 35. a clamping rod; 36. a connecting rod; 37. a spring E; 38. a bidirectional telescopic rod; 39. a push rod; 4. a fixing assembly; 41. a slide block; 42. a support rod; 43. a clamping plate; 44. a spring B; 45. a rubber pad; 5. placing a plate; 6. a limit component; 61. an L-shaped inserted link; 62. a spring F; 7. a spring A; 9. a cross bar; 10. and a vertical rod.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 7, the present invention provides a technical solution: the utility model provides a straight following formula backlight detection device of LED liquid crystal display, includes detection platform 1, is provided with the interface of being connected with the backlight on the detection platform 1, and the recess has been seted up at the top of detection platform 1, and spout and through-hole have been seted up to the inboard of detection platform 1 top recess, can supply splint 43 to stretch out the back right, can slide from top to bottom in the spout of detection platform 1 top recess inboard, and the spout has all been seted up to detection platform 1 left and right sides, can supply slider 41 to reciprocate. The inboard of detection platform 1 top recess is run through by placing the board 5 and with place board 5 sliding connection, place the bottom of board 5 and the one end of spring A7 fixed, and the other end of spring A7 is fixed at the top of detection platform 1, and the inside of detection platform 1 is provided with fixed subassembly 4 and the driven subassembly 2 of control fixed subassembly 4 that fix the backlight, is fixed with horizontal pole 9 on the inner wall of detection platform 1, and the top of detection platform 1 is fixed with montant 10.
In this embodiment, the fixing component 4 includes a slider 41, the slider 41 penetrates through the left side of the detection platform 1 and is slidably connected with the detection platform 1, the right side of the slider 41 is fixed with one end of a supporting rod 42, the other end of the supporting rod 42 penetrates through a clamping plate 43 and is slidably connected with the clamping plate 43, the left side of the clamping plate 43 is fixed with one end of a spring B44, the other end of the spring B44 is fixed on the right side of the slider 41, a rubber pad 45 is fixed at the bottom of the clamping plate 43, and the rubber pad 45 can ensure that the backlight is not damaged when the clamping plate 43 moves downwards to clamp the backlight. The top of the clamping plate 43 is provided with a groove, and the top of the clamping plate 43 is provided with a control assembly 3 for controlling the clamping plate 43.
In this embodiment, the driven component 2 includes a loop bar 21, one end of the loop bar 21 is hinged to the left side of the placement board 5, the other end of the loop bar 21 is penetrated by a fixing bar 22 and is slidably connected with the fixing bar 22, the bottom of the fixing bar 22 is fixed to one end of a spring C23, the other end of the spring C23 is fixed to the inner wall of the loop bar 21, the top of the fixing bar 22 is hinged to the bottom of the clamping board 43, a limiting component 6 for limiting the fixing bar 22 is arranged on the loop bar 21, and a clamping groove is formed in the fixing bar 22.
In this embodiment, the control assembly 3 includes a rectangular frame 31, the rectangular frame 31 is slidably mounted at the top of the detection platform 1, a connecting rod 32 is fixed on the inner wall of the rectangular frame 31, the connecting rod 32 penetrates through a T-shaped push plate 33 and is slidably connected with the T-shaped push plate 33, the top of the T-shaped push plate 33 is fixed with one end of a spring D34, the other end of the spring D34 is fixed on the inner wall of the rectangular frame 31, the T-shaped push plate 33 penetrates through the bottom of the rectangular frame 31 and the top of the detection platform 1 and is slidably connected with the rectangular frame 31 and the detection platform 1, a clamping groove is formed in the right side of the T-shaped push plate 33, limiting or releasing limiting of the T-shaped push plate 33 can be achieved through matching a clamping rod 35, the right side of the clamping rod 35 is penetrated by a connecting rod 36 and is slidably connected with the connecting rod 36, the right side of the connecting rod 36 is fixed on the inner wall of the rectangular frame 31, the right side of the clamping rod 35 is fixed with one end of a spring E37, the other end of the spring E37 is fixed on the inner wall of the rectangular frame 31, the top of the clamping rod 35 is hinged with one end of a bidirectional telescopic rod 38, the middle position of the bidirectional telescopic rod 38 is hinged with the inner wall of the rectangular frame 31, the other end of the bidirectional telescopic rod 38 is hinged with the inner wall of the rectangular frame 31, and the right side of the rectangular frame 39 is hinged with the bottom of the bidirectional push rod 39.
In this embodiment, the limiting component 6 includes an L-shaped inserting rod 61, the L-shaped inserting rod 61 penetrates through the sleeve rod 21 and is slidably connected with the sleeve rod 21, the L-shaped inserting rod 61 is fixed with one end of a spring F62, the other end of the spring F62 is fixed on the sleeve rod 21, the L-shaped inserting rod 61 can limit the fixing rod 22 by matching with a clamping groove on the fixing rod 22, and therefore when the placing plate 5 moves downwards, the placing plate 5 can move rightwards and stretch out by pulling the clamping plate 43 through the fixing rod 22 and the sleeve rod 21. The control component 3, the fixing component 4, the driven component 2 and the limiting component 6 are respectively provided with two groups of control components 3, the fixing component 4, the driven component 2 and the limiting component 6 which are symmetrically arranged by taking the central line of the detection table 1 as a symmetrical axis, so that the backlight source can be better fixed.
The direct type backlight source detection method of the LED liquid crystal display screen comprises the following steps:
s1, placing a backlight source, placing the backlight source on the placing plate 5, inserting a backlight source connector into an interface on the detection table 1, pressing the placing plate 5 downwards, and pulling the clamping plate 43 to extend out of the inner side of the groove of the detection table 1 through the sleeve rod 21 and the fixing rod 22 by the placing plate 5.
S2, releasing the limit, the loop bar 21 rotates clockwise with the fixed bar 22 taking the position hinged with the clamping plate 43 as the circle center, the cross bar 9 abuts against the L-shaped inserting bar 61, so that the L-shaped inserting bar 61 moves leftwards to be withdrawn from the clamping groove on the fixed bar 22, and the limit on the fixed bar 22 is released.
S3, fixing the backlight source, wherein the clamping plate 43 moves rightwards with the rectangular frame 31, the ejector rod 39 abuts against the vertical rod 10, the ejector rod 39 moves leftwards, the ejector rod 39 pulls the clamping rod 35 to move rightwards through the bidirectional telescopic rod 38, the clamping rod 35 is enabled to withdraw from the clamping groove on the T-shaped push plate 33, limiting on the T-shaped push plate 33 is relieved, and under the action of the spring D34, the T-shaped push plate 33 pushes the clamping plate 43 to move downwards, so that the backlight source is clamped.
S4, after the detection of the backlight source is finished, the sliding block 41 is pulled upwards, the sliding block 41 drives the clamping plate 43 to move upwards through the supporting rod 42 to remove the fixation of the backlight source, the backlight source is taken down, the placing plate 5 is sprung upwards under the action of the spring A7, the placing plate 5 pushes the sleeve rod 21 to slightly rotate a certain angle, the fixing rod 22 moves upwards to enable the L-shaped inserting rod 61 to be reinserted into a clamping groove on the fixing rod 22, the placing plate 5 moves upwards to push the clamping plate 43 to move leftwards through the fixing rod 22 and the sleeve rod 21 to reset and retract into the detection table 1, and when the clamping plate 43 moves upwards, the clamping rod 35 is reinserted into a clamping groove on the right side of the T-shaped pushing plate 33 to realize the re-limiting of the T-shaped pushing plate 33, and then the device is reset integrally.
Although embodiments of the present invention 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 therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a straight following formula backlight detection device of LED liquid crystal display, includes detection platform (1), be provided with the interface of being connected with backlight on detection platform (1), its characterized in that: the top of detecting platform (1) is provided with a groove, the inner side of the groove at the top of detecting platform (1) is penetrated by a placing plate (5) and is in sliding connection with the placing plate (5), the bottom of the placing plate (5) is fixed with one end of a spring A (7), the other end of the spring A (7) is fixed at the top of detecting platform (1), the inside of detecting platform (1) is provided with a fixing component (4) for fixing a backlight source and a driven component (2) for controlling the fixing component (4), a cross rod (9) is fixed on the inner wall of detecting platform (1), and a vertical rod (10) is fixed at the top of detecting platform (1);
the fixing assembly (4) comprises a sliding block (41), the sliding block (41) penetrates through the left side of the detection table (1) and is in sliding connection with the detection table (1), the right side of the sliding block (41) is fixed with one end of a supporting rod (42), the other end of the supporting rod (42) penetrates through a clamping plate (43) and is in sliding connection with the clamping plate (43), the left side of the clamping plate (43) is fixed with one end of a spring B (44), the other end of the spring B (44) is fixed on the right side of the sliding block (41), a rubber pad (45) is fixed at the bottom of the clamping plate (43), a groove is formed in the top of the clamping plate (43), and the top of the clamping plate (43) is provided with a control assembly (3) for controlling the clamping plate (43);
the driven component (2) comprises a loop bar (21), one end of the loop bar (21) is hinged to the left side of the placing plate (5), the other end of the loop bar (21) is penetrated by a fixing bar (22) and is in sliding connection with the fixing bar (22), the bottom of the fixing bar (22) is fixed with one end of a spring C (23), the other end of the spring C (23) is fixed on the inner wall of the loop bar (21), the top of the fixing bar (22) is hinged to the bottom of a clamping plate (43), a limiting component (6) for limiting the fixing bar (22) is arranged on the loop bar (21), and a clamping groove is formed in the fixing bar (22);
the control assembly (3) comprises a rectangular frame (31), the rectangular frame (31) is slidably mounted at the top of the detection table (1), a connecting rod (32) is fixed on the inner wall of the rectangular frame (31), the connecting rod (32) penetrates through a T-shaped push plate (33) and is slidably connected with the T-shaped push plate (33), the top of the T-shaped push plate (33) is fixed with one end of a spring D (34), the other end of the spring D (34) is fixed on the inner wall of the rectangular frame (31), the T-shaped push plate (33) penetrates through the bottom of the rectangular frame (31) and the top of the detection table (1) and is slidably connected with the rectangular frame (31) and the detection table (1), and a clamping groove is formed in the right side of the T-shaped push plate (33);
the control assembly (3) further comprises a clamping rod (35), the right side of the clamping rod (35) is penetrated by a connecting rod (36) and is in sliding connection with the connecting rod (36), the right side of the connecting rod (36) is fixed on the inner wall of the rectangular frame (31), the right side of the clamping rod (35) is fixed with one end of a spring E (37), the other end of the spring E (37) is fixed on the inner wall of the rectangular frame (31), the top of the clamping rod (35) is hinged with one end of a bidirectional telescopic rod (38), the middle position of the bidirectional telescopic rod (38) is hinged with the inner wall of the rectangular frame (31), the other end of the bidirectional telescopic rod (38) is hinged with the bottom of a push rod (39), and the push rod (39) penetrates through the right side of the rectangular frame (31) and is in sliding connection with the rectangular frame (31);
the limiting assembly (6) comprises an L-shaped inserting rod (61), the L-shaped inserting rod (61) penetrates through the sleeve rod (21) and is in sliding connection with the sleeve rod (21), the L-shaped inserting rod (61) is fixed with one end of a spring F (62), and the other end of the spring F (62) is fixed on the sleeve rod (21);
the inner side of the groove at the top of the detection table (1) is provided with a chute and a through hole, so that the clamping plate (43) can slide up and down in the chute at the inner side of the groove at the top of the detection table (1) after the clamping plate (43) stretches out rightwards; a sliding groove is formed in the outer side of the detection table (1) and can be used for the sliding block (41) to move up and down; the L-shaped inserted link (61) is matched with a clamping groove on the fixed link (22) to limit the fixed link (22); the cross rod (9) is used for abutting against the L-shaped inserted link (61) when the limit of the fixed link (22) is released, so that the L-shaped inserted link (61) moves leftwards and is withdrawn from the clamping groove on the fixed link (22); the clamping groove on the right side of the T-shaped push plate (33) is matched with the clamping rod (35) to limit or release the limit of the T-shaped push plate (33); when the rectangular frame (31) moves rightwards, the ejector rod (39) abuts against the vertical rod (10), the ejector rod (39) moves leftwards, the ejector rod (39) pulls the clamping rod (35) to move rightwards through the bidirectional telescopic rod (38), the clamping rod (35) is withdrawn from the clamping groove on the T-shaped push plate (33), and the limit on the T-shaped push plate (33) is released.
2. The LED liquid crystal display direct type backlight detection apparatus according to claim 1, wherein: the control assemblies (3) are provided with two groups, and the two groups of control assemblies (3) are symmetrically arranged by taking the central line of the detection table (1) as a symmetrical axis;
the two groups of fixing assemblies (4) and the two groups of driven assemblies (2) are respectively arranged, and the two groups of fixing assemblies (4) and the two groups of driven assemblies (2) are symmetrically arranged by taking the central line of the detection table (1) as a symmetrical axis;
the limiting assemblies (6) are arranged in two groups, and the two groups of limiting assemblies (6) are symmetrically arranged by taking the central line of the detection table (1) as a symmetrical axis.
3. A direct type backlight source detection method of an LED liquid crystal display screen is characterized by comprising the following steps: the detection method is applied to the detection device according to claim 1 or 2, and comprises the following steps:
s1, placing a backlight source, placing the backlight source on a placing plate (5), inserting a backlight source connector into an interface on a detection table (1), pressing the placing plate (5) downwards, and pulling a clamping plate (43) to extend out of the inner side of a groove of the detection table (1) through a loop bar (21) and a fixing bar (22) by the placing plate (5);
s2, releasing the limit, wherein the loop bar (21) drives the fixed bar (22) to rotate clockwise by taking the position hinged with the clamping plate (43) as the circle center, and the cross bar (9) is propped against the L-shaped inserting bar (61) so that the L-shaped inserting bar (61) moves leftwards to be withdrawn from a clamping groove on the fixed bar (22), and further releasing the limit on the fixed bar (22);
s3, fixing a backlight source, wherein a clamping plate (43) moves rightwards with a rectangular frame (31), a push rod (39) abuts against a vertical rod (10), the push rod (39) moves leftwards, the push rod (39) pulls a clamping rod (35) to move rightwards through a bidirectional telescopic rod (38), the clamping rod (35) is withdrawn from a clamping groove on a T-shaped push plate (33), limiting of the T-shaped push plate (33) is relieved, and the T-shaped push plate (33) pushes the clamping plate (43) to move downwards under the action of a spring D (34) to clamp the backlight source;
s4, detection is finished, after backlight detection is finished, the sliding block (41) is pulled upwards, the sliding block (41) drives the clamping plate (43) to move upwards through the supporting rod (42), fixation of the backlight is relieved, the backlight is taken down, the placing plate (5) is sprung upwards under the action of the spring A (7), the placing plate (5) abuts against the movable sleeve rod (21) to slightly rotate a certain angle, the fixing rod (22) moves upwards to enable the L-shaped inserting rod (61) to be reinserted into a clamping groove on the fixing rod (22), the placing plate (5) moves upwards to push the clamping plate (43) to move leftwards through the fixing rod (22) and the sleeve rod (21) to reset and retract into the detection table (1), and when the clamping plate (43) moves upwards, the clamping rod (35) is reinserted into a clamping groove on the right side of the T-shaped pushing plate (33), the T-shaped pushing plate (33) is limited again, and the whole device resets.
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