Blowing device of lamp testing machine and lamp testing machine

Abstract

The application provides a blowing device of a lighting platform and the lighting platform. The blowing device is installed on the lighting platform and is used for blowing the bottom of a display panel installed on the lighting platform. The blowing device comprises a fixed plate installed on the side of the lighting platform and corresponding to the bottom of the display panel. The inside of the fixed plate is formed with a blowing space. The blowing space is connected with a gas source through the fixed plate. A plurality of blowing holes are formed on the side of the fixed plate close to the display panel. The blowing holes are communicated with the blowing space. The blowing device of the lighting platform blows the bottom of the display panel, so that the display panel is prevented from being bent during detection.

Description

Technical Field

[0001] This application relates to the field of liquid crystal display panel testing devices, and more particularly to an air blowing device and a lighting machine for a lighting machine. Background Technology

[0002] After the display panel is manufactured, it usually needs to be transported to a lighting machine for lighting test to confirm whether there are problems such as uneven brightness, edge light leakage, color difference, etc.

[0003] Existing display panel testing methods include flat-lay lighting design and vertical lighting design. Among them, the flat-lay lighting design is widely popular due to its high utilization of factory space and fast lighting speed. In use, it is only necessary to fix the four sides of the display panel to the lighting machine, while the middle of the display panel is suspended in the lighting machine and set opposite to the plain glass on the bottom of the lighting machine. After the display panel is powered on, different colors and patterns can be displayed in the middle of the display panel under the reflection of the plain glass.

[0004] However, in actual testing, due to the large size of the display panel, when the middle of the display panel is suspended above the lighting machine, it will bend downwards due to gravity and come into contact with the plain glass, resulting in water ripple marks (mura), which affects the yield of the display panel. Utility Model Content

[0005] The purpose of this application is to overcome the shortcomings of the prior art and design an air blowing device that is installed on the lighting machine platform and can prevent the display panel from bending downwards.

[0006] This application provides an air blowing device, installed on a lighting machine base and used to blow air onto the bottom of a display panel installed on the lighting machine base, including: A fixing plate is installed on the side of the lighting machine and corresponds to the bottom of the display panel. An air blowing space is formed inside the fixed plate. The air blowing space can be connected to an air source through the fixed plate. At the same time, multiple air blowing holes are opened on the side of the fixed plate near the display panel, and the multiple air blowing holes are connected to the air blowing space.

[0007] In one embodiment, the gas source is a gas storage mechanism connected to the fixed plate. The gas storage mechanism blows gas through the blowing space and the plurality of blowing holes toward the bottom of the display panel. The fixed plate has a plurality of air holes arranged in an array and connected to the air outlet of the air storage mechanism to form a plurality of air channels, which are formed within the air blowing space.

[0008] In one embodiment, the fixing plate includes a main board and two mounting plates, the two mounting plates being located on both sides of the main board and detachably mounted between the lighting machine and the main board. The air blowing space and the air blowing hole are formed on the main board, and the air storage mechanism is connected to the main board.

[0009] In one embodiment, the motherboard has a strip-shaped hole. The mounting plate has mounting holes corresponding to the positions of the strip holes. The mounting holes and the strip holes can be used to insert fasteners, thereby connecting the motherboard and the mounting plate.

[0010] In one embodiment, the motherboard is slidably mounted on the side of the mounting plate away from the lighting machine.

[0011] In one embodiment, the strip-shaped hole extends away from the lighting machine and includes a first end and a second end disposed opposite to each other. When the mounting hole of the mounting plate corresponds to the first end, the main board is disposed away from the display panel. When the mounting hole of the mounting plate corresponds to the second end, the main board is disposed close to the display panel.

[0012] In one embodiment, a connecting hole is provided on the side of the main board away from the plurality of air holes, and the air outlet of the air storage mechanism passes through the connecting hole and is connected to the air blowing space of the main board.

[0013] In one embodiment, the motherboard includes an integrally formed receiving portion and two protrusions, the receiving portion being located between the two mounting plates. The two protrusions extend from the top sides of the receiving portion. The air inlet and the air space are formed in the receiving portion. The two protrusions are provided with the strip-shaped holes and are detachably connected to the mounting holes of the corresponding two mounting plates.

[0014] In one embodiment, the blowing device further includes a control device installed on the lighting machine, the control device being electrically connected to the gas storage mechanism and controlling the flow rate and volume of the gas entering the fixed plate from the gas storage mechanism.

[0015] In one embodiment, the fixing plate is a sheet metal structure, and the diameter of the air blowing hole is 0.5-2mm.

[0016] This application also provides a lighting machine, which includes an air blowing device.

[0017] The air blowing device of the lamp lighting machine of this application can blow air onto the bottom of the display panel, so that the display panel will not bend when it is tested on the lamp lighting machine. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the lighting machine according to Embodiment 1 of this utility model.

[0019] Figure 2 yes Figure 1 The diagram shows the blowing effect on the display panel after the receiving plate and blowing device on the lighting machine platform are installed.

[0020] Figure 3 yes Figure 2 A schematic diagram of the specific structure of the air blowing device.

[0021] Figure 4 yes Figure 3 A schematic diagram of the specific structure of the fixing plate of the air blowing device.

[0022] Figure 5 yes Figure 4 A structural schematic diagram of the fixing plate of the air blowing device from another perspective.

[0023] Figure 6 yes Figure 5 A cross-sectional schematic diagram of the main board of the air blowing device.

[0024] Figure 7 yes Figure 1 Diagram of the air blowing device and signal transmission of the lighting machine.

[0025] Explanation of main component symbols 1000 Lighting machine; 100 Air blowing device; 300 Frame; 500 Sensing device; 700 Receiving plate; 710 Positioning component; 900 Shooting mechanism; 200 Display panel; 800 Plain glass; 10 Fixing plate; 50 Main board; 51 Receiving part; 511 Air blowing space; 513 Connecting hole; 515 Air blowing channel; 517 Air blowing hole; 53 Protrusion; 531 Strip hole; 531a First end; 531b Second end; 70 Mounting plate; 71 Mounting hole; 30 Air storage mechanism; 31 Regulating valve; 33 Air pipe; 50 Control device; 90 Fastener. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] The following is a reference to the appendix. Figures 1 to 7 The specific embodiments of this application will be described in further detail below.

[0028] Reference Figure 1 and Figure 2 This application provides an air blowing device 100 for a lighting machine 1000 and a lighting machine 1000. The air blowing device 100 is installed on the lighting machine 1000 and can blow air onto the bottom of the display panel 200 placed on the lighting machine 1000, so that the display panel 200 is supported by an upward air film force, preventing the display panel 200 from bending downward due to gravity.

[0029] Reference Figure 1 and Figure 2 The lighting machine 1000 includes an air blowing device 100, a frame 300, a sensing device 500, a receiving plate 700, and a shooting mechanism 900. The receiving plate 700 is horizontally fixed on the frame 300 and maintains a certain distance from the ground. The middle of the receiving plate 700 is hollow, forming a chamber with open top and bottom that communicates with the external environment and is positioned opposite to the plain glass 800 on the ground. Positioning members 710 are installed on the four sides of the receiving plate 700 to position it around the display panel 200, so that the display panel 200 is stably placed on the receiving plate 700. The air blowing device 100 is installed on at least one side of the positioning member 710 and corresponds to the bottom of the display panel 200. The shooting mechanism 900 is fixed to the top of the frame 300 for taking pictures of the display panel 200. The sensing device 500 is installed on the frame 300 and is electrically connected to the shooting mechanism 900 and the air blowing device 100. When the display panel 200 is placed on the receiving plate 700 and powered on, the sensing device 500 senses the display panel 200 and transmits a signal to the air blowing device 100 and the shooting mechanism 900, causing the air blowing device 100 to activate and blow air onto the bottom of the display panel 200, and the shooting mechanism 900 to activate and capture an image of the display panel 200. It is understood that the air blowing device 100 can be installed at any position on the receiving plate 700 or the frame 300, as long as the air blowing device 100 can blow air onto the bottom of the display panel 200.

[0030] Reference Figures 1 to 3 The air blowing device 100 includes a fixed plate 10, an air storage mechanism 30, and a control device 50 (see reference). Figure 1 The fixing plate 10 is a sheet metal part and is installed on the side of the receiving plate 700 of the lighting machine 1000 near the chamber, and is also installed on one side of the positioning member 710. Multiple air holes 517 are provided on the side of the fixing plate 10 facing the middle of the receiving plate 700, and the multiple air holes 517 correspond to the bottom of the display panel 200. The air storage mechanism 30 is connected to the side of the fixing plate 10 away from the display panel 200 and communicates with the multiple air holes 517 (see reference). Figure 2 The gas storage mechanism 30 is electrically connected to the sensing device 500. The control device 50 is mounted on the frame 300 of the lighting machine 1000 and electrically connected to the gas storage mechanism 30. The control device 50 controls the flow rate and velocity of the gas from the gas storage mechanism 30 to the multiple air blowing holes 517. When the display panel 200 is placed on the lighting machine 1000, the sensing device 500 transmits a signal to the gas storage mechanism 30. Under the control of the control device 50, the gas storage mechanism 30 transmits the gas to the multiple air blowing holes 517. The multiple air blowing holes 517 blow the gas to the bottom of the display panel 200, so that the display panel 200 is supported by an upward air film force and remains straight on the lighting machine 1000 without bending downward.

[0031] Reference Figure 3 , Figure 4 and Figure 5 The fixing plate 10 includes a main plate 50 and two mounting plates 70, each mounting plate 70 being located on one side of the main plate 50 and sandwiched between the main plate 50 and the receiving plate 700. The main plate 50 is located on the side of the mounting plate 70 away from the receiving plate 700, and a plurality of air holes 517 are formed on the main plate 50.

[0032] Specifically, two mounting plates 70 are arranged side-by-side with a gap between them and located on one side of the positioning member 710. The distance between the two mounting plates 70 can be used to accommodate part of the main board 50. Each mounting plate 70 is U-shaped, with mounting holes 71 formed at both ends. Fasteners 90 can be inserted into the two mounting holes 71, and the mounting plates 70 and the main board 50 are detachably connected. In some other embodiments, an adhesive is installed on the bottom of the mounting plate 70, and the mounting plate 70 can be detachably connected to the receiving plate 700 through the adhesive. Alternatively, a magnetic chuck is installed inside the mounting plate 70, and the mounting plate 70 can be detachably connected to the receiving plate 700 through the magnetic chuck. In short, the specific installation position of the mounting plate 70 can be adjusted according to the size of the display panel 200 or other actual needs.

[0033] The main board 50 is mounted on the receiving plate 700 and corresponds to the bottom of the display panel 200, while also being connected to the gas storage mechanism 30. The main board 50 includes an integrally formed receiving portion 51 and two protrusions 53. The receiving portion 51 is mounted between the two mounting plates 70, and each protrusion 53 protrudes from one side of the receiving portion 51 and is located on the top of the mounting plate 70, while being detachably connected to the mounting plate 70.

[0034] Reference Figure 5 and Figure 6 The receiving section 51 is plate-shaped and is positioned at the bottom of the display panel 200, and is connected to the gas storage mechanism 30. The receiving section 51 is hollow, forming an air blowing space 511. Multiple air blowing holes 517 are provided on the side of the receiving section 51 near the center of the receiving plate 700, and these holes and the air blowing space 511 are interconnected. The air blowing holes 517 face the bottom surface of the display panel 200 or are located below the display panel 200. The gas flow direction of the air blowing holes 517 is parallel to the bottom surface of the display panel 200 and partially faces the bottom surface of the display panel 200, thereby supporting the display panel 200.

[0035] Reference Figure 3 and Figure 4 A connecting hole 513 is provided on the side of the receiving part 51 opposite to the air blowing hole 517. The receiving part 51 is connected to the air storage mechanism 30 through the connecting hole 513. The connecting hole 513, the air blowing space 511 and the multiple air blowing holes 517 are interconnected, so that the gas of the air storage mechanism 30 is blown towards the bottom of the display panel 200 through the connecting hole 513, the air blowing space 511 and the multiple air blowing holes 517.

[0036] Reference Figure 6 Multiple air holes 517 are arranged in an array. Specifically, multiple air holes 517 are arranged side by side with intervals, and the distance between two adjacent air holes 517 is consistent. Each air hole 517 and the connecting hole 513 form an air blowing channel 515. Thus, multiple air blowing channels 515 are formed within the air blowing space 511. The multiple air blowing channels 515 are interconnected, and the gas is blown evenly to the bottom of the display panel 200 through the air holes 517. Specifically, refer to... Figure 2 Gas flows from multiple air blowing channels 515 to their respective air blowing holes 517 and flows out from the corresponding air blowing holes 517. The airflow flowing out of the air blowing holes 517 is evenly formed between the display panel 200 and the plain glass 800 on the ground. Thus, an air film is formed between the display panel 200 and the plain glass 800. The pressure of this air film supports the weight of the middle part of the display panel 200, so that the display panel 200 is subjected to an upward air film support force opposite to the direction of gravity. This support force works together with the support force of the receiving plate 700 to support the display panel 200 flatly on the receiving plate 700.

[0037] In this embodiment, each air hole 517 has a circular cross-sectional shape and a diameter between 0.5mm and 2mm. Within this range, the air flow will not generate noise, and the airflow will not blow dust from the ground onto the display panel 200. It is understood that the cross-section of the air hole 517 can be other non-circular shapes, such as polygons, to achieve directional air blowing.

[0038] Reference Figure 5 Two protrusions 53 protrude from both sides of the top end of the receiving portion 51, and a stepped structure is formed between the protrusions 53 and the receiving portion 51. Each protrusion 53 has a strip-shaped hole 531 extending away from the center of the receiving plate 700. The strip-shaped hole 531 and the mounting hole 71 are corresponding to each other and communicate with each other. The strip-shaped hole 531 and the mounting hole 71 can be connected by inserting a fastener 90. It should be noted that when the fastener 90 is inserted into the strip-shaped hole 531 and the mounting hole 71, the top end of the fastener 90 is received within the strip-shaped hole 531 and abuts against the top wall of the mounting plate 70.

[0039] The strip-shaped hole 531 includes a first end 531a and a second end 531b disposed opposite to each other. The first end 531a is located away from the center of the receiving plate 700, while the second end 531b is located near the center of the receiving plate 700. Therefore, when the mounting hole 71 is aligned with the first end 531a of the strip-shaped hole 531, the main board 50 is located away from the display panel 200, and the air blown from the multiple air holes 517 provides less air film support to the display panel 200. When the main board 50 slides relative to the mounting plate 70, aligning the mounting hole 71 with the second end 531b of the strip-shaped hole 531, the main board 50 is located near the display panel 200, and the distance between the multiple air holes 517 and the bottom of the display panel 200 decreases, resulting in greater air film support from the multiple air holes 517. When it is necessary to change the support force of the air blown from the air holes 517 on the display panel 200, the distance between the main board 50 and the display panel 200 can be changed by sliding the main board 50.

[0040] Reference Figure 3 and Figure 6 The gas storage mechanism 30, as the origin, is installed on the side of the receiving section 51 away from the receiving plate 700. The gas storage mechanism 30 includes a regulating valve 31 and an air pipe 33. One end of the regulating valve 31 is mechanically fixedly connected to the air pipe 33, and simultaneously, the regulating valve 31 is electrically connected to the control device 50 and the sensing device 500. The other end of the air pipe 33 forms an air outlet, which passes through the connection hole 513 of the receiving section 51 and is interconnected with the main plate 50. The air pipe 33 communicates with the air blowing space 511, the air blowing channel 515, and the air blowing hole 517. (See reference...) Figure 3 and Figure 7 When the sensing device 500 detects that the display panel 200 is placed on the receiving plate 700, it transmits a control signal to the regulating valve 31 of the gas storage mechanism 30. The regulating valve 31 then transmits the signal to the control device 50, which regulates the flow rate and volume of the gas within the regulating valve 31. After regulation, the gas flows out of the regulating valve 31 and sequentially passes through the air pipe 33, the connecting hole 513, the blowing channel 515, and the blowing hole 517, before being blown towards the bottom of the display panel 200. In this embodiment, the regulating valve 31 is a pneumatic regulating valve 31.

[0041] When installing the air blowing device 100 of the lighting machine 1000, first, fix the mounting plate 70 to the side of the receiving plate 700 near the chamber. Then, place the receiving part 51 of the main board 50 between the two mounting plates 70, so that the protrusion 53 of the main board 50 is located on the mounting plate 70. Insert the fastener 90 into the mounting hole 71 of the mounting plate 70 and the strip hole 531 of the protrusion 53 at the same time. Finally, insert the air outlet end of the air pipe 33 of the air storage mechanism 30 into the connection hole 513 of the main board 50.

[0042] When using the air blowing device 100, firstly, the display panel 200 is placed on the receiving plate 700, and the main board 50 slides relative to the mounting plate 70 to adjust the distance between the air blowing hole 517 of the main board 50 and the display panel 200. Next, according to the size of the display panel 200, the flow rate and velocity of the gas in the regulating valve 31 are adjusted on the control device 50. Then, the sensing device 500 is activated. After the sensing device 500 senses the display panel 200, it simultaneously transmits a control signal to the regulating valve 31 of the air storage mechanism 30 and the imaging device. After receiving the control signal, the regulating valve 31 of mechanism 900 further transmits the signal to the control device 50. The control device 50, upon receiving the signal, feeds back a signal to the gas storage mechanism 30. Based on the signals from the sensing device 500 and the control device 50, the gas storage mechanism 30 releases gas at a specific flow rate and velocity, allowing the gas to pass through the air pipe 33, connecting hole 513, blowing channel 515, and blowing hole 517, evenly blowing air onto the bottom of the display panel 200. Simultaneously, the imaging mechanism 900 captures an image of the display panel 200. When the display panel 200 has finished detection and detached from the receiving plate 700, the sensing device 500 transmits a control signal to the gas storage mechanism 30, causing the gas storage mechanism 30 to stop blowing air onto the display panel 200.

[0043] This application incorporates an air blowing device 100, which provides an upward air film support force to the display panel 200. This support force is approximately the same as the weight of the center of the display panel 200, preventing the display panel 200 from bending when placed on the receiving plate 700. Testing showed that the curvature of the display panel 200 decreased from 0.28% to almost zero, significantly improving the yield rate of the display panel.

[0044] The air storage mechanism 30 of the air blowing device 100 and the sensing device 500 of the lighting machine 1000 are combined. The air storage mechanism 30 only blows air onto the display panel 200 when the display panel 200 is placed on the lighting machine 1000, avoiding gas waste caused by continuous blowing. Experiments have shown that this embodiment saves 68% of compressed air compared to the continuous blowing solution.

[0045] The scope of this utility model is not limited to the above description, but is defined by the claims. Therefore, the embodiments described in this specification are merely illustrative and not intended to limit the scope. Thus, all modifications that do not depart from the scope and limits of the claims, as well as content equivalent to the scope and limits of the claims, are included within the scope of the claims.

Claims

1. An air blowing device for a lighting machine, installed on the lighting machine and used to blow air onto the bottom of a display panel installed on the lighting machine, characterized in that, include: A fixing plate is installed on the side of the lighting machine and corresponds to the bottom of the display panel. An air blowing space is formed inside the fixed plate. The air blowing space can be connected to an air source through the fixed plate. At the same time, multiple air blowing holes are opened on the side of the fixed plate near the display panel, and the multiple air blowing holes are connected to the air blowing space.

2. The air blowing device of the lighting machine as described in claim 1, characterized in that, The gas source is a gas storage mechanism connected to the fixed plate. The gas storage mechanism blows gas through the blowing space and multiple blowing holes toward the bottom of the display panel. The fixed plate has a plurality of air holes arranged in an array and connected to the air outlet of the air storage mechanism to form a plurality of air channels, which are formed within the air blowing space.

3. The air blowing device of the lighting machine as described in claim 2, characterized in that, The fixing plate includes a main board and two mounting plates. The two mounting plates are located on both sides of the main board and are detachably installed between the lighting machine and the main board. The air blowing space and the air blowing hole are formed on the main board, and the air storage mechanism is connected to the main board.

4. The air blowing device of the lighting machine as described in claim 3, characterized in that, The motherboard has a strip-shaped hole. The mounting plate has mounting holes corresponding to the positions of the strip holes. The mounting holes and the strip holes can be used to insert fasteners, thereby connecting the motherboard and the mounting plate.

5. The air blowing device of the lighting machine as described in claim 4, characterized in that, The motherboard is slidably mounted on the side of the mounting plate away from the lighting machine.

6. The air blowing device for the lighting machine as described in claim 5, characterized in that, The strip-shaped hole extends away from the lighting machine and includes a first end and a second end that are disposed opposite to each other. When the mounting hole of the mounting plate corresponds to the first end, the main board is disposed away from the display panel. When the mounting hole of the mounting plate corresponds to the second end, the main board is disposed close to the display panel.

7. The air blowing device for the lighting machine as described in claim 3, characterized in that, A connection hole is provided on the side of the main board away from the plurality of air holes. The air outlet of the air storage mechanism passes through the connection hole and is connected to the air blowing space of the main board.

8. The air blowing device for the lighting machine as described in claim 4, characterized in that, The motherboard includes an integrally formed receiving portion and two protrusions, the receiving portion being located between the two mounting plates. The two protrusions extend from the top sides of the receiving portion. The air inlet and the air space are formed in the receiving portion. The two protrusions are provided with the strip-shaped holes and are detachably connected to the mounting holes of the corresponding two mounting plates.

9. The air blowing device for the lighting machine as described in claim 2, characterized in that, Includes at least one of the following features, (1) The blowing device further includes a control device installed on the lighting machine, the control device being electrically connected to the gas storage mechanism and controlling the flow rate and flow of the gas from the gas storage mechanism into the fixed plate; (2) The fixing plate is a sheet metal structure; (3) The diameter of the air blowing hole is 0.5-2mm.

10. A lighting machine, characterized in that, Includes the air blowing device as described in any one of claims 1-9.

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