LED backlight dotting device for uniform light source detection

Abstract

The present invention discloses a dotting device for LED backlight source with uniform light source detection, which relates to the technical field of dotting device, and comprises a body and a filtering component, wherein a dotting mechanism is arranged in the body, and a revolving door is rotatably connected to the left side of the body, a locking component is arranged above the revolving door, an air pump is arranged above the body, and a vent pipe is arranged in the body, a partition is arranged in the middle of the body, and a shunt pipe is arranged above the partition, the filtering component is arranged at the upper part of the partition, and suction ports are symmetrically opened on the left and right sides of the lower part of the partition, a material placing component is arranged in the lower part of the body, and a light source component is arranged on the right part of the rear wall of the body. When the present invention is used, the smoke generated during laser engraving can be extracted and filtered to prevent the smoke from spreading to the outside, and the device can be assisted to dissipate heat to ensure the temperature of the device is stable, smoke can be prevented from escaping from the body during processing, and the light guide plate can be detected after the dotting is completed.

Description

Technical Field

[0001] The invention relates to the technical field of dotting devices, in particular to an LED backlight source dotting device for uniform light source detection. Background Art

[0002] When producing LED backlight sources, a laser dotting machine is usually used to process the light guide plate, thereby forming reflective diffusion grooves on the surface of the light guide plate. Compared with the light guide plate produced by screen printing, the laser dotted light guide plate has the distinctive characteristics of ultra-thin, ultra-bright, uniform light guide, energy saving, environmental protection, no dark areas, durability, not easy to yellow, simple and quick installation and maintenance, etc.

[0003] When existing laser dotting machines process light guide plates, smoke may be generated during the laser engraving process. If a large amount of smoke accumulates, it may affect the accuracy of laser engraving. In addition, after the smoke generated during engraving is dissipated into the outside air, if it is inhaled into the human body, it will cause certain damage to the human body.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and an LED backlight dotting device with uniform light source detection is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide an LED backlight source dotting device for uniform light source detection to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dotting device for LED backlight source with uniform light source detection, comprising a body and a filtering assembly, a dotting mechanism is arranged in the body, and a revolving door is rotatably connected to the left side of the body, a locking assembly is arranged above the revolving door, an air pump is arranged above the body, and a ventilation pipe is arranged in the body, a partition is arranged in the middle part of the body, and a shunt pipe is arranged above the partition, the filtering assembly is arranged on the upper part of the partition, and suction ports are symmetrically opened on the left and right sides of the lower part of the partition, a material placing assembly is arranged in the lower part of the body, and a light source assembly is arranged on the right part of the rear wall of the body, a telescopic rod is fixedly connected to the right part of the upper wall of the body, and a detection plate is fixedly connected to the lower end of the telescopic rod.

[0007] Furthermore, the air pump is connected to the ventilation pipe, and the partition is connected to the ventilation pipe through a shunt pipe.

[0008] Furthermore, the locking assembly includes a slot, a through hole, a cavity and a retaining spring. The slots are symmetrically provided on the front and rear sides of the upper end of the revolving door, and a through hole is provided at the lower end of the slot. The cavity is symmetrically provided on the front and rear sides of the upper left end of the body, and a retaining spring is fixedly connected in the cavity. The positions of the cavity and the slot correspond to each other.

[0009] Furthermore, the locking assembly also includes a card block and a card rod, the card block is fixedly connected to the lower end of the retaining spring, and a card rod is provided on the inner side of the retaining spring, the card rod is fixedly connected to the card block, and the card block is engaged with the revolving door through a card slot, and the card block is elastically connected to the card cavity through the retaining spring.

[0010] Furthermore, the filter assembly includes an embedding groove, a concave frame and a sealing plate. The embedding grooves are symmetrically opened on the left and right sides of the upper part of the partition, and the concave frame is snap-connected in the embedding groove. The sealing plate is fixedly connected to the rear end of the concave frame. The concave frame is slidably connected to the partition through the embedding groove, and the sealing plate is embeddably connected to the body through the embedding groove.

[0011] Furthermore, the filter assembly also includes a contact and a compression spring. The contact is fixedly connected to the upper wall of the inner surface of the concave frame, and the compression spring is fixedly connected to the lower wall of the inner surface of the concave frame.

[0012] Furthermore, the filter assembly also includes a pad and an activated carbon filter plate. The pad is fixedly connected above the compression spring, and the activated carbon filter plate is fixedly connected between the pads. The pad is elastically connected to the concave frame through the compression spring, and the pad is electrically connected to the contact.

[0013] Furthermore, the material placement assembly includes a bottom frame and a through slot. The bottom frame is fitted on the lower inner portion of the body, and a through slot is provided on the lower surface of the bottom frame. The diverter pipe is slidably connected to the through slot, and the bottom frame is connected to the partition by snap-fitting.

[0014] Furthermore, the material placing assembly also includes a suction cup, a pull rod and a pull plate. The suction cup is fixedly connected inside the bottom frame, and the pull rod is fixedly connected to the right side of the bottom frame. The right end of the pull rod is fixedly connected to the pull plate. The suction cup is connected to the diversion pipe through a through groove.

[0015] Furthermore, the light source assembly includes a mounting card, a spring, a baffle and a lamp bead. The mounting card is detachably installed on the right part of the rear wall of the body, and the spring is fixedly connected inside the mounting card. The other end of the spring is fixedly connected to the baffle, and the lower part of the baffle is fixedly connected to the lamp bead. The baffle is L-shaped, and inclined surfaces are provided at the front and rear ends of the baffle. The baffle is elastically connected to the mounting card through a spring.

[0016] The present invention provides an LED backlight dotting device with uniform light source detection, which has the following beneficial effects: when in use, the smoke generated during laser engraving can be extracted and filtered to prevent the smoke from spreading to the outside, and at the same time, the device can be assisted in heat dissipation to ensure the temperature of the device is stable, and smoke can be prevented from escaping from the machine body during the processing, and the light guide plate can be detected after the dotting is completed.

[0017] 1. When the present invention is in use, the air pump can circulate air on the housing through the ventilation pipe, thereby assisting the heat dissipation of the body and ensuring the temperature stability of the body. At the same time, when the dotting mechanism performs laser engraving on the light guide plate, the smoke generated can enter the partition through the suction port from the body, and after being filtered by the activated carbon filter plate, the clean airflow enters the ventilation pipe from the shunt pipe and is then sent out of the body by the air pump. As the smoke adsorbed by the activated carbon filter plate increases, the mass of the activated carbon filter plate increases. When the activated carbon filter plate overcomes the elastic force of the compression spring and the suction force generated by the air pump when pumping air and descends in the concave frame, the contact is separated from the pad, thereby notifying the operator to replace the activated carbon filter plate. The arrangement of the two activated carbon filter plates allows the replacement to be completed without interrupting the processing during the replacement process while ensuring the filtering effect. The sealing plate can prevent the smoke from escaping from the embedded groove. In summary, when in use, the smoke generated during laser engraving can be extracted and filtered to prevent the smoke from spreading to the outside. At the same time, the device can be assisted to dissipate heat and ensure the temperature stability of the device.

[0018] 2. During processing, the present invention rotates the revolving door to close the left end of the machine body. During the rotation process, the revolving door can be pressed into the card cavity through the inclined surface of the card block. After the revolving door closes the machine body, the card block can rebound under the action of the retaining spring and engage with the revolving door through the card slot, thereby fixing the revolving door, preventing the revolving door from rotating under the action of gravity during the processing, opening the machine body and causing smoke to escape. During processing, as the air pump runs, the air in the machine body is drawn out, thereby forming a negative pressure at the through hole, and the card block is adsorbed in the card slot. At this time, even if the card rod is pulled, the card block cannot be drawn out of the card slot, thereby ensuring that the closed environment in the machine body is not destroyed. After the processing is completed, the air pump is stopped, the negative pressure disappears, and the card rod is pulled to draw the card block from the card slot into the card cavity and compress the retaining spring, thereby releasing the fixation of the revolving door, thereby taking the processed light guide plate out of the machine body. In summary, during the processing, the closed environment inside the machine body can be kept from being destroyed, thereby ensuring the accuracy of the processing.

[0019] 3. During processing, the present invention first places the light guide plate in the bottom frame, and then starts the air pump. The air pump can extract the air in the through groove through the shunt pipe, thereby forming a negative pressure between the suction cup and the light guide plate, so that the suction cup fixes the light guide plate in the bottom frame, and avoids the light guide plate moving during processing and causing processing failure. After the processing is completed, the pull plate is pulled, and the bottom frame can be driven to move in the machine body through the pull rod, so that the bottom frame carries the light guide plate to the right part of the machine body. When the bottom frame moves, the inclined surface of the baffle plate can press it into the installation card and compress the spring. After the baffle plate is located in the center of the bottom frame, the baffle plate can rebound under the action of the spring, driving the lamp beads close to the light guide plate, and then the telescopic rod lowers the detection plate, so that the light guide plate can be detected to ensure that the light guide plate can evenly distribute the light. When the bottom frame moves, the bottom frame can slide over the through groove shunt pipe to keep the suction cup on the light guide plate. In summary, during processing, the light guide plate can be stably clamped, and the light guide plate can be detected after the processing is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall cross-sectional front view structure of an LED backlight source dotting device for uniform light source detection of the present invention;

[0021] Figure 2 The present invention is a LED backlight source dotting device for uniform light source detection Figure 1 The enlarged structural diagram at A in the middle;

[0022] Figure 3 It is a cross-sectional right side structural schematic diagram of an LED backlight source dotting device for uniform light source detection of the present invention;

[0023] Figure 4 The present invention is a LED backlight source dotting device for uniform light source detection Figure 1 The enlarged structural diagram at B in the middle;

[0024] Figure 5 It is a schematic diagram of the cross-sectional left side structure of an LED backlight source dotting device for uniform light source detection of the present invention;

[0025] Figure 6 It is a schematic diagram of the main structure of a concave character frame of an LED backlight source dotting device for uniform light source detection of the present invention;

[0026] Figure 7 It is a schematic diagram of the cross-sectional view and top view of the structure of the installation card of the LED backlight source dotting device for uniform light source detection of the present invention;

[0027] Figure 8 The present invention is a schematic diagram of the three-dimensional structure of the bottom frame of an LED backlight source dotting device for uniform light source detection.

[0028] In the figure: 1, machine body; 2, dotting mechanism; 3, revolving door; 4, locking assembly; 401, card slot; 402, through hole; 403, card cavity; 404, card spring; 405, card block; 406, card rod; 5, air pump; 6, vent pipe; 7, partition; 8, shunt pipe; 9, filter assembly; 901, embedded groove; 902, concave frame; 903, sealing plate; 904, contact; 905 , compression spring; 906, pad; 907, activated carbon filter plate; 10, suction port; 11, material placement assembly; 1101, bottom frame; 1102, through slot; 1103, suction cup; 1104, pull rod; 1105, pull plate; 12, light source assembly; 1201, installation card; 1202, spring; 1203, baffle; 1204, lamp bead; 13, telescopic rod; 14, detection board. DETAILED DESCRIPTION

[0029] See also Figures 1 to 8 The present invention provides a technical solution: a LED backlight dotting device for uniform light source detection, comprising a body 1 and a filtering component 9, a dotting mechanism 2 is arranged in the body 1, and a revolving door 3 is rotatably connected to the left side of the body 1, a locking component 4 is arranged above the revolving door 3, an air pump 5 is arranged above the body 1, and a ventilation pipe 6 is arranged in the body 1, a partition 7 is arranged in the middle of the body 1, and a shunt pipe 8 is arranged above the partition 7, the filtering component 9 is arranged on the upper part of the partition 7, and suction ports 10 are symmetrically opened on the left and right sides of the lower part of the partition 7, a material placing component 11 is arranged in the lower part of the body 1, and a light source component 12 is arranged on the right part of the rear wall of the body 1, a telescopic rod 13 is fixedly connected to the right part of the upper wall of the body 1, and a detection plate 14 is fixedly connected to the lower end of the telescopic rod 13.

[0030] See also Figures 1 to 3 , the locking assembly 4 includes a card slot 401, a through hole 402, a card cavity 403 and a spring 404. The card slots 401 are symmetrically opened on the front and rear sides of the upper end of the rotating door 3, and the through hole 402 is opened at the lower end of the card slot 401. The card cavity 403 is symmetrically opened on the front and rear sides of the upper left end of the body 1, and the spring 404 is fixedly connected in the card cavity 403. The positions of the card cavity 403 and the card slot 401 correspond to each other. The locking assembly 4 also includes a card block 405 and a card rod 406. The card block 405 is fixedly connected to the lower end of the spring 404, and the card rod 406 is arranged on the inner side of the spring 404. The card rod 406 is fixedly connected to the card block 405, and the card block 405 is connected to the rotating door 3 through the card slot 401. The card block 405 is elastically connected to the card cavity 403 through the spring 404;

[0031] The specific operation is as follows. During processing, the light guide plate is first placed in the bottom frame 1101, and then the air pump 5 is started. The air pump 5 can extract the air in the through groove 1102 through the shunt pipe 8, thereby forming a negative pressure between the suction cup 1103 and the light guide plate, so that the suction cup 1103 fixes the light guide plate in the bottom frame 1101, and avoids the light guide plate from moving during the processing and causing the processing failure. After the processing is completed, the pull plate 1105 is pulled, and the bottom frame 1101 can be driven to move in the body 1 through the pull rod 1104, so that the bottom frame 1101 carries the light guide plate to the right part of the body 1. When the bottom frame 1101 moves, the inclined baffle 1203 can be used to move the light guide plate. The baffle 1203 is pressed into the mounting card 1201 and the spring 1202 is compressed. When the baffle 1203 is located in the center of the bottom frame 1101, the baffle 1203 can rebound under the action of the spring 1202, driving the lamp beads 1204 close to the light guide plate, and then the telescopic rod 13 lowers the detection plate 14 to detect the light guide plate to ensure that the light guide plate can distribute the light evenly. When the bottom frame 1101 moves, the bottom frame 1101 can slide above the diverter tube 8 through the through groove 1102 to keep the suction cup 1103 on the light guide plate. In summary, the light guide plate can be stably clamped during processing and can be detected after the processing is completed.

[0032] See also Figure 1 and Figures 4 to 8The air pump 5 is connected to the vent pipe 6, and the partition 7 is connected to the vent pipe 6 through the shunt pipe 8. The filter assembly 9 includes an embedding groove 901, a concave frame 902 and a sealing plate 903. The upper left and right sides of the partition 7 are symmetrically provided with embedding grooves 901, and the embedding grooves 901 are connected with the concave frame 902 in a snap-fitting manner. The rear end of the concave frame 902 is fixedly connected with the sealing plate 903. The concave frame 902 is slidably connected to the partition 7 through the embedding groove 901, and the sealing plate 903 is embedded and connected to the body 1 through the embedding groove 901. The filter assembly 9 also includes a contact 904 and a compression spring 905 The inner surface of the concave frame 902 is fixedly connected to a contact 904 on the wall, and the inner surface of the concave frame 902 is fixedly connected to a compression spring 905 on the lower wall. The filter assembly 9 also includes a pad 906 and an activated carbon filter plate 907. The pad 906 is fixedly connected above the compression spring 905, and the activated carbon filter plate 907 is fixedly connected between the pads 906. The pad 906 is elastically connected to the concave frame 902 through the compression spring 905, and the pad 906 is electrically connected to the contact 904. The material placement assembly 11 includes a bottom frame 1101 and a through slot 1102. The lower inner surface of the body 1 The bottom frame 1101 is fitted with a bottom frame, and a through groove 1102 is opened on the lower surface of the bottom frame 1101. The shunt pipe 8 is slidably connected with the through groove 1102. The bottom frame 1101 is connected with the partition 7. The material placement component 11 also includes a suction cup 1103, a pull rod 1104 and a pull plate 1105. The suction cup 1103 is fixedly connected inside the bottom frame 1101, and the pull rod 1104 is fixedly connected to the right side of the bottom frame 1101. The pull plate 1105 is fixedly connected to the right end of the pull rod 1104. The suction cup 1103 is connected to the shunt pipe 8 through the through groove 1102. The light source assembly 12 includes a mounting card 1201, a spring 1202, a baffle 1203 and a lamp bead 1204. The mounting card 1201 is detachably mounted on the right part of the rear wall of the body 1, and the spring 1202 is fixedly connected inside the mounting card 1201. The other end of the spring 1202 is fixedly connected to the baffle 1203, and the lower part of the baffle 1203 is fixedly connected to the lamp bead 1204. The baffle 1203 is L-shaped, and the front and rear ends of the baffle 1203 are provided with inclined surfaces. The baffle 1203 is elastically connected to the mounting card 1201 through the spring 1202;

[0033] The specific operation is as follows. When in use, the air pump 5 can circulate air on the outer shell of the body 1 through the ventilation pipe 6, thereby assisting the heat dissipation of the body 1 and ensuring the temperature inside the body 1 is stable. At the same time, when the dotting mechanism 2 is laser engraving the light guide plate, the smoke generated can enter the partition 7 from the body 1 through the suction port 10, and after being filtered by the activated carbon filter plate 907, the clean air flow enters the ventilation pipe 6 from the diversion pipe 8, and is then sent out of the body 1 by the air pump 5. As the smoke adsorbed by the activated carbon filter plate 907 increases, the mass of the activated carbon filter plate 907 increases. When the activated carbon filter plate 907 is 100 grams, the smoke generated can enter the partition 7 from the body 1 through the suction port 10, and after being filtered by the activated carbon filter plate 907, the clean air flow enters the ventilation pipe 6 from the diversion pipe 8, and is then sent out of the body 1 by the air pump 5. As the smoke adsorbed by the activated carbon filter plate 907 increases, the mass of the activated carbon filter plate 907 increases. After the filter 907 drops in the concave frame 902 due to the elastic force of the compression spring 905 and the suction force generated by the air pump 5 when the air is exhausted, the contact 904 is out of contact with the pad 906, thereby notifying the operator to replace the activated carbon filter plate 907. The arrangement of the two activated carbon filter plates 907 allows the replacement to be completed without interrupting the processing during the replacement process, while ensuring the filtering effect. The sealing plate 903 can prevent the smoke from escaping from the embedded groove 901. In summary, when in use, the smoke generated during laser engraving can be extracted and filtered to prevent the smoke from spreading to the outside, and at the same time, the device can be assisted in Heat dissipation is performed to ensure the temperature of the device is stable. During processing, the revolving door 3 is rotated to close the left end of the body 1. During the rotation process, the revolving door 3 can be pressed into the card cavity 403 through the inclined surface of the clamping block 405. After the revolving door 3 closes the body 1, the clamping block 405 can rebound under the action of the clamping spring 404 and engage with the revolving door 3 through the clamping groove 401, thereby fixing the revolving door 3 to prevent the revolving door 3 from rotating under the action of gravity during the processing, opening the body 1 and causing smoke to escape. During processing, as the air pump 5 is running, the air in the body 1 is extracted, thereby forming a negative pressure at the through hole 402. The card block 405 is adsorbed in the card slot 401. At this time, even if the card rod 406 is pulled, the card block 405 cannot be drawn out from the card slot 401, which ensures that the closed environment inside the body 1 will not be destroyed. After the processing is completed, the air pump 5 is stopped, the negative pressure disappears, and the card rod 406 is pulled to draw the card block 405 from the card slot 401 into the card cavity 403 and compress the retaining spring 404 to release the fixation of the revolving door 3, thereby taking the processed light guide plate out of the body 1. In summary, during the processing, the closed environment inside the body 1 can be kept from being destroyed, ensuring the accuracy of the processing.

[0034] In summary, when using the LED backlight dotting device for uniform light source detection, first place the light guide plate in the bottom frame 1101, then rotate the revolving door 3 to close the left end of the body 1. During the rotation, the revolving door 3 can be pressed into the card cavity 403 through the inclined surface of the card block 405. After the revolving door 3 closes the body 1, the card block 405 can rebound under the action of the retaining spring 404 and engage with the revolving door 3 through the card slot 401, thereby fixing the revolving door 3 to prevent the revolving door 3 from rotating under the action of gravity during the processing, and opening the body 1 to cause smoke to escape. Start the air pump 5, and the air pump 5 can extract the air in the through slot 1102 through the shunt pipe 8, thereby forming a negative pressure between the suction cup 1103 and the light guide plate, so that the suction cup 1103 fixes the light guide plate to the bottom frame 11 01, in order to avoid the movement of the light guide plate during the processing and cause the processing failure, the air pump 5 can circulate the air on the outer shell of the body 1 through the ventilation pipe 6, so as to assist the heat dissipation of the body 1 and ensure the temperature stability in the body 1. At the same time, when the dotting mechanism 2 is laser engraving the light guide plate, the smoke generated can enter the partition 7 from the body 1 through the suction port 10, and after being filtered by the activated carbon filter plate 907, the clean air flow enters the ventilation pipe 6 from the diversion pipe 8, and is then sent out of the body 1 by the air pump 5. As the smoke adsorbed by the activated carbon filter plate 907 increases, the mass of the activated carbon filter plate 907 increases. When the activated carbon filter plate 907 overcomes the elastic force of the compression spring 905 and the suction force generated by the air pump 5 when exhausting air and descends in the concave frame 902, the contact 904 is disconnected from the pad 906. The activated carbon filter plate 907 is touched, thereby notifying the operator to replace the activated carbon filter plate 907. The arrangement of the two activated carbon filter plates 907 allows the replacement to be completed without interrupting the processing during the replacement process, while ensuring the filtering effect. The sealing plate 903 can prevent smoke from escaping from the embedded groove 901. During processing, as the air pump 5 runs, the air in the body 1 is extracted, thereby forming a negative pressure at the through hole 402, and the card block 405 is adsorbed in the card groove 401. At this time, even if the card rod 406 is pulled, the card block 405 cannot be extracted from the card groove 401, thereby ensuring that the closed environment in the body 1 will not be destroyed. After the processing is completed, the pull plate 1105 is pulled, and the bottom frame 1101 can be driven to move in the body 1 through the pull rod 1104, so that the bottom frame 1101 carries the light guide plate to move Move to the right part of the machine body 1. When the bottom frame 1101 moves, the inclined surface of the baffle 1203 can be used to press it into the installation card 1201 and compress the spring 1202. When the baffle 1203 is located in the center of the bottom frame 1101, the baffle 1203 can rebound under the action of the spring 1202, driving the lamp beads 1204 close to the light guide plate. Then the telescopic rod 13 lowers the detection plate 14, and the light guide plate can be tested to ensure that the light guide plate can evenly distribute the light. When the bottom frame 1101 moves, the bottom frame 1101 can slide over the shunt pipe 8 through the through groove 1102 to keep the suction cup 1103 adsorbing the light guide plate. After the detection is completed, push the pull plate 1105, move the bottom frame 1101 back to its original position through the pull rod 1104, stop the air pump 5, and the negative pressure disappears.By pulling the clamping rod 406, the clamping block 405 can be drawn from the clamping slot 401 into the clamping cavity 403 and the clamping spring 404 can be compressed to release the fixing of the rotary door 3, thereby taking the processed light guide plate out of the machine body 1.

[0035] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A LED backlight dotting device for uniform light source detection, characterized in that: The invention comprises a machine body (1) and a filter assembly (9), wherein a dotting mechanism (2) is arranged in the machine body (1), and a revolving door (3) is rotatably connected to the left side of the machine body (1), a locking assembly (4) is arranged above the revolving door (3), an air pump (5) is arranged above the machine body (1), and a ventilation pipe (6) is arranged in the machine body (1), a partition (7) is arranged in the middle of the machine body (1), and a diversion pipe (8) is arranged above the partition (7), the filter assembly (9) is arranged on the upper part of the partition (7), and suction ports (10) are symmetrically opened on the left and right sides of the lower part of the partition (7), a material placing assembly (11) is arranged in the lower part of the machine body (1), and a light source assembly (12) is arranged on the right part of the rear wall of the machine body (1), and the upper wall of the machine body (1) is provided with a light source assembly (12). The right part is fixedly connected to a telescopic rod (13), and the lower end of the telescopic rod (13) is fixedly connected to a detection plate (14). The filter assembly (9) comprises an embedding groove (901), a concave frame (902) and a sealing plate (903). The embedding grooves (901) are symmetrically opened on the left and right sides of the upper part of the partition (7), and the concave frame (902) is snap-connected in the embedding groove (901). The sealing plate (903) is fixedly connected to the rear end of the concave frame (902). The concave frame (902) is slidably connected to the partition (7) through the embedding groove (901), and the sealing plate (903) is snap-connected to the body (1) through the embedding groove (901). The filter assembly (9) also comprises a contact (904) and a compression spring (905). The concave frame (902) A contact point (904) is fixedly connected to the upper wall of the inner surface, and a compression spring (905) is fixedly connected to the lower wall of the inner surface of the concave frame (902). The filter assembly (9) further comprises a pad (906) and an activated carbon filter plate (907). The pad (906) is fixedly connected above the compression spring (905), and the activated carbon filter plate (907) is fixedly connected between the pads (906). The pad (906) is elastically connected to the concave frame (902) through the compression spring (905), and the pad (906) is electrically connected to the contact point (904). The material placement assembly (11) comprises a bottom frame (1101) and a through groove (1102). The bottom frame (1101) is fitted on the lower inner portion of the body (1), and the lower surface of the bottom frame (1101) is fixedly connected to the lower inner portion of the body (1). A through groove (1102) is provided on the surface, the shunt pipe (8) is slidably connected to the through groove (1102), the bottom frame (1101) is slidably connected to the partition (7), the material placement assembly (11) further comprises a suction cup (1103), a pull rod (1104) and a pull plate (1105), the suction cup (1103) is fixedly connected inside the bottom frame (1101), and the pull rod (1104) is fixedly connected to the right side of the bottom frame (1101), and the pull plate (1105) is fixedly connected to the right end of the pull rod (1104), the suction cup (1103) is connected to the shunt pipe (8) through the through groove (1102), the air pump (5) is connected to the ventilation pipe (6), and the partition (7) is connected to the ventilation pipe (6) through the shunt pipe (8),The locking assembly (4) comprises a card slot (401), a through hole (402), a card cavity (403) and a spring (404); the card slot (401) is symmetrically provided on the front and rear sides of the upper end of the rotating door (3); and the through hole (402) is provided at the lower end of the card slot (401); the card cavity (403) is symmetrically provided on the front and rear sides of the upper left end of the body (1); and the spring (404) is fixedly connected to the card cavity (403); the card cavity (403) and the card slot (401) correspond to each other in position; the locking assembly (4) further comprises a card block (405) and a card rod (406) ), a clamping block (405) is fixedly connected to the lower end of the clamping spring (404), and a clamping rod (406) is provided inside the clamping spring (404), the clamping rod (406) is fixedly connected to the clamping block (405), and the clamping block (405) is clamped and connected to the rotating door (3) through the clamping groove (401), and the clamping block (405) is elastically connected to the clamping cavity (403) through the clamping spring (404). During processing, the air in the running body (1) of the air pump (5) is extracted, thereby forming a negative pressure at the through hole (402), and the clamping block (405) is adsorbed in the clamping groove (401). , 2. The LED backlight dotting device for uniform light source detection according to claim 1, characterized in that: The light source assembly (12) comprises a mounting card (1201), a spring (1202), a baffle (1203) and a lamp bead (1204); the mounting card (1201) is detachably mounted on the right portion of the rear wall of the body (1), and the mounting card (1201) is fixedly connected to the spring (1202); the other end of the spring (1202) is fixedly connected to the baffle (1203), and the lower portion of the baffle (1203) is fixedly connected to the lamp bead (1204); the baffle (1203) is L-shaped, and inclined surfaces are provided at the front and rear ends of the baffle (1203); the baffle (1203) is elastically connected to the mounting card (1201) via the spring (1202).

Images