Automatic cleaning device for cooling fins of LCD projector

Abstract

The utility model relates to the technical field of cleaning tools, in particular to an LCD projector cooling fin automatic cleaning device which comprises a machine body, a connecting pipe and an auxiliary assembly, the connecting pipe is fixedly connected with the upper surface of the machine body, the connecting pipe is communicated with the inner wall of the machine body, the upper surface of the connecting pipe is fixedly connected with a guide shell, and the guide shell is communicated with the inner wall of the machine body. The guide shell is communicated with the inner wall of the connecting pipe, the inner wall of the guide shell is rotatably connected with a cleaning brush, the inner wall of the guide shell is provided with a driving mechanism, the cleaning brush is in bolted connection with the driving end of the driving mechanism, the driving mechanism is electrically connected with the machine body, and the auxiliary assembly is arranged on the inner wall of the machine body. According to the cleaning device, the auxiliary assembly is arranged, so that the storage capacity of the cleaning device is increased, the problems that the capacity is small when a dust collecting plate is adopted in the cleaning device, and part of dust easily falls into the cleaning device in the dismounting process are solved, and the practicability and stability of the cleaning device are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning tools, in particular to an automatic cleaning device for a heat sink of an LCD projector. Background Art

[0002] LCD projectors are high-tech products brought about by the development of liquid crystal technology, lighting technology and integrated circuits. LCD projectors use the photoelectric effect of liquid crystal, that is, the arrangement of liquid crystal molecules changes under the action of an electric field, affecting the transmittance or reflectivity of its liquid crystal unit, thereby affecting its optical properties and producing images with different gray levels and colors; with the development of the times, existing users will use automatic cleaning devices to clean the heat sink of LCD projectors to clean the auxiliary dust on the surface of the heat sink, thereby ensuring the cleaning effect of the heat sink.

[0003] Prior art includes a utility model with publication number CN220361642U, which discloses an automatic cleaning device for a heat sink of an LCD projector. The patent adopts a shell, and the shell includes a negative pressure cylinder, an ash guide pipe, an ash collection component and a cleaning cylinder. When cleaning the heat sink of the projector, the utility model only needs to remove the cover on the outside of the heat sink of the projector, and then the shell is held by hand, and the fan and the drive motor are started by a switch, so that the drive motor drives the cleaning brush head to rotate. The operator holds the shell and puts the cleaning brush head against the heat sink to rotate and brush it, so that the heat sink of the projector does not need to be disassembled for cleaning, thereby avoiding the situation where the heat sink of the projector is damaged due to disassembly, and improving the cleaning efficiency. The cleaning efficiency is improved; and the fan is set so that negative pressure is generated in the negative pressure cylinder when the fan rotates, so that the cleaned dust moves along the dust guide pipe, and the dust is collected by the No. 1 dust collecting plate and the No. 2 dust collecting plate engaged on the dust guide pipe. The cleaning is convenient and practical, and the cleaning of the heat sink of the LCD projector is usually solved by manually disassembling the back plate, taking out the heat sink for cleaning, and then installing it after drying. Many people inadvertently cause damage to the equipment when cleaning and maintaining the projector because of their unfamiliarity with the equipment. When putting the heat sink back into the groove after cleaning, they may not be clear about the matters that need to be paid attention to when placing the heat sink, which may lead to unreasonable placement of the heat sink and affect the heat dissipation problem.

[0004] The inventor discovered in his daily work that in the process of cleaning the projector heat sink with the help of an automatic cleaning device, there are existing automatic cleaning devices such as the above-mentioned ones, which rely on two dust collecting plates installed inside the pipe to collect dust generated during work. When there is a lot of dust accumulated on the surface of the heat sink, the dust collecting plate located inside the pipe will be blocked in the process of collecting dust, thereby interfering with the normal use of the device. At the same time, when the dust is collected by the dust collecting plate, some dust will fall into the device during the subsequent disassembly process, thereby contaminating the parts and mechanisms inside the device, causing the device's circuit to short-circuit and malfunction under the influence of dust. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that when dust is collected by a dust collecting plate, part of the dust will fall into the interior of the device during the subsequent disassembly process, and then contaminate the parts and mechanisms inside the device, causing the circuit of the device to short-circuit and malfunction under the influence of the dust, and to propose an automatic cleaning device for the heat sink of an LCD projector.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an automatic cleaning device for a heat sink of an LCD projector, comprising a body, a connecting pipe and an auxiliary component, wherein the connecting pipe is fixedly connected to the upper surface of the body, the connecting pipe is communicated with the inner wall of the body, a guide shell is fixedly connected to the upper surface of the connecting pipe, the guide shell is communicated with the inner wall of the connecting pipe, a cleaning brush is rotatably connected to the inner wall of the guide shell, a driving mechanism is provided on the inner wall of the guide shell, the cleaning brush is bolted to the driving end of the driving mechanism, the driving mechanism is electrically connected to the body, and the auxiliary component is arranged on the inner wall of the body;

[0007] The auxiliary component includes a storage unit, which includes a limit plate, which is arranged on the lower surface of the fuselage, a circular hole is opened on the surface of the limit plate, an air-permeable net is fixedly connected to the inner wall of the limit plate located at the circular hole, a storage box is fixedly connected to the upper surface of the limit plate, an air pump is arranged on the upper surface of the limit plate, the air pump is electrically connected to the fuselage, an output end of the air pump is connected to the air-permeable net, a filter element is installed on the upper surface of the limit plate, the filter element is sleeved with the surface of the air pump, an isolation funnel is fixedly connected to the inner wall of the fuselage, and the isolation funnel is connected to the inner wall of the connecting pipe;

[0008] The auxiliary component also includes an assembly unit, which includes a square pin. A slot is provided on the lower surface of the fuselage. The square pin is fixedly connected to the upper surface of the limit plate, and the square pin is plugged into the inner wall of the slot. A sliding cavity is provided at the connection between the square pin and the limit plate. A buckle frame is slidably connected to the inner wall of the sliding cavity where the square pin and the limit plate are located. A limiting spring is fixedly connected to the side surface of the buckle frame, and the limiting spring is fixedly connected to the inner wall of the sliding cavity. A shift block is fixedly connected to the lower surface of the buckle frame. A positioning groove is provided on the inner wall of the fuselage located in the slot, and the buckle frame is plugged into the inner wall of the positioning groove.

[0009] Preferably, the storage box is plugged into the inner wall of the body, and the storage box is communicated with the inner wall of the body. The storage box installed inside the body can store dust sucked in when the device is working, so as to increase the storage capacity of the device.

[0010] Preferably, the input end of the vacuum pump is connected to the inner wall of the storage box, and the filter element is located on the inner wall of the storage box. By installing the filter element on the surface of the vacuum pump, the gas passing through the vacuum pump can be filtered when the vacuum pump is working, so that dust in the gas can be isolated.

[0011] Preferably, the isolation funnel is located inside the storage box, and the isolation funnel is connected to the inside of the storage box. By installing the isolation funnel inside the fuselage and utilizing the structural feature of the isolation funnel being larger at the top and smaller at the bottom, the reverse flow of dust into the connecting pipe can be reduced.

[0012] Preferably, there are two square pins, which are symmetrically arranged front and back about the limit plate. The square pins installed on both sides of the limit plate can be used to determine the installation position of the limit plate in cooperation with the card slot to improve the accuracy and stability of the limit plate in the installed state.

[0013] Preferably, the number of the buckle frames is four, and the four buckle frames are arranged diagonally with respect to the fuselage. The buckle frames penetrate the side surface of the square pin. The buckle frames installed inside the sliding cavity can limit the position of the square pin in cooperation with the positioning groove with the assistance of the limit spring, so that the limit plate can be restricted below the fuselage.

[0014] Preferably, the shift block is slidably connected to the inner wall of the sliding cavity, and the shift block abuts against the lower surface of the limit plate. Through the shift block fixedly connected to the buckle frame, the buckle frame can be pulled to move under the operation of the user, so that the user can operate the buckle frame for disassembly operations.

[0015] Compared with the prior art, the advantages and positive effects of the utility model are:

[0016] The utility model provides an auxiliary component. When the cleaning device is used to clean the heat sink, the switch on the body is turned on, and then the driving mechanism and the air extraction pump in the guide shell are powered on. The driving mechanism is powered on to drive the cleaning brush to rotate, and the air extraction pump works to cooperate with the connecting pipe to extract air at the guide shell. Then the cleaning brush is placed on the surface of the heat sink. The cleaning brush rotates to clean the dust on the surface of the heat sink. The cleaned dust is sucked into the connecting pipe through the suction force generated by the guide shell. The connecting pipe guides the dust-laden air to pass through the isolation funnel and enter the storage box. At the same time, the dust-laden air continues to be extracted by the air extraction pump. The extracted air gradually passes through the filter element. The filter element filters the dust in the air. The filtered air is filtered out by the air extraction pump and the filter element. The dust in the storage box is discharged under the guidance of the air network, thereby reducing the air pressure in the storage area. When the cleaning operation is completed and the dust inside the storage box needs to be processed, the shift blocks on all sides are simultaneously moved, and the shift blocks cooperate with the buckle frame to squeeze the limit spring. The limit spring is squeezed and deformed to lose the constraint on the buckle frame, and the buckle frame loses the constraint and separates from the positioning groove. When the buckle frame moves to the maximum spacing, the limit plate can be pulled downward, and the limit plate pulls the storage box under force. When the storage box is completely separated from the body, the dust in the storage box can be processed. By arranging auxiliary components, the storage capacity of the cleaning device is increased, thereby reducing the problem that the cleaning device has a small capacity when using a dust collecting plate, and some dust is easy to fall into the inside of the device during disassembly, and further improves the practicability and stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model provides a three-dimensional structural schematic diagram of an automatic cleaning device for a heat sink of an LCD projector;

[0018] Figure 2 The utility model provides a schematic diagram of the structure of an automatic cleaning device for a heat sink of an LCD projector from a bottom view;

[0019] Figure 3 The utility model provides a partial structural schematic diagram of an automatic cleaning device for a heat sink of an LCD projector;

[0020] Figure 4 The utility model proposes an automatic cleaning device for LCD projector heat sink Figure 3 Schematic diagram of the structure at A in the middle;

[0021] Figure 5 The utility model provides a partial structural schematic diagram of an automatic cleaning device for a heat sink of an LCD projector.

[0022] Legend:

[0023] 1. Body; 2. Connecting pipe; 3. Guide shell; 4. Cleaning brush; 5. Auxiliary components; 51. Storage unit; 511. Limiting plate; 512. Breathable net; 513. Storage box; 514. Vacuum pump; 515. Filter element; 516. Isolation funnel; 52. Assembly unit; 521. Card slot; 522. Square pin; 523. Buckle bracket; 524. Limiting spring; 525. Dial block; 526. Positioning slot. DETAILED DESCRIPTION

[0024] See also Figure 1-5 The utility model provides a technical solution: an automatic cleaning device for a heat sink of an LCD projector, comprising a body 1, a connecting pipe 2 and an auxiliary component 5, the connecting pipe 2 is fixedly connected to the upper surface of the body 1, the connecting pipe 2 is communicated with the inner wall of the body 1, a guide shell 3 is fixedly connected to the upper surface of the connecting pipe 2, the guide shell 3 is communicated with the inner wall of the connecting pipe 2, a cleaning brush 4 is rotatably connected to the inner wall of the guide shell 3, a driving mechanism is provided on the inner wall of the guide shell 3, the cleaning brush 4 is bolted to the driving end of the driving mechanism, the driving mechanism is electrically connected to the body 1, and the auxiliary component 5 is arranged on the inner wall of the body 1.

[0025] In this embodiment: the auxiliary component 5 includes a storage unit 51, and the storage unit 51 includes a limit plate 511, which is arranged on the lower surface of the fuselage 1, and a circular hole is opened on the surface of the limit plate 511, and an air-permeable net 512 is fixedly connected to the inner wall of the limit plate 511 located at the circular hole, and a storage box 513 is fixedly connected to the upper surface of the limit plate 511, and an air pump 514 is arranged on the upper surface of the limit plate 511, and the air pump 514 is electrically connected to the fuselage 1, and the output end of the air pump 514 is connected to the air-permeable net 512, and a filter element 515 is installed on the upper surface of the limit plate 511, and the filter element 515 is sleeved with the surface of the air pump 514, and an isolation funnel 516 is fixedly connected to the inner wall of the fuselage 1, and the isolation funnel 516 is connected to the inner wall of the connecting pipe 2;

[0026] The auxiliary component 5 also includes an assembly unit 52, which includes a square pin 522. A card slot 521 is provided on the lower surface of the fuselage 1. The square pin 522 is fixedly connected to the upper surface of the limit plate 511. The square pin 522 is plugged into the inner wall of the card slot 521. A sliding cavity is provided at the connection between the square pin 522 and the limit plate 511. The square pin 522 and the limit plate 511 are slidably connected to a buckle frame 523 located on the inner wall of the sliding cavity. The side surface of the buckle frame 523 is fixedly connected to a limit spring 524. The limit spring 524 is fixedly connected to the inner wall of the sliding cavity. A shift block 525 is fixedly connected to the lower surface of the buckle frame 523. A positioning groove 526 is provided on the inner wall of the fuselage 1 located in the card slot 521. The buckle frame 523 is plugged into the inner wall of the positioning groove 526.

[0027] Specifically, the storage box 513 is plugged into the inner wall of the body 1, and the storage box 513 is connected to the inner wall of the body 1. The storage box 513 installed inside the body 1 can store dust sucked in when the device is working, so as to increase the storage capacity of the device.

[0028] Specifically, the input end of the vacuum pump 514 is connected to the inner wall of the storage box 513 , and the filter element 515 is located on the inner wall of the storage box 513 .

[0029] In this embodiment, by installing the filter element 515 on the surface of the vacuum pump 514, the gas passing through the vacuum pump 514 can be filtered when the vacuum pump 514 is working, so that dust in the gas can be isolated.

[0030] Specifically, the isolation funnel 516 is located inside the storage box 513, and the isolation funnel 516 is connected to the inside of the storage box 513. By installing the isolation funnel 516 inside the fuselage 1 and utilizing the structural feature of the isolation funnel 516 being larger at the top and smaller at the bottom, the reverse flow of dust into the connecting pipe 2 can be reduced.

[0031] In this embodiment, there are two square pins 522 , and the two square pins 522 are symmetrically arranged front and back about the limiting plate 511 .

[0032] In this embodiment, the square pins 522 installed on both sides of the limiting plate 511 can cooperate with the card slots 521 to determine the installation position of the limiting plate 511, so as to improve the accuracy and stability of the limiting plate 511 in the installed state.

[0033] Specifically, there are four buckle frames 523, which are diagonally arranged with respect to the fuselage 1. The buckle frames 523 penetrate the side surface of the square pin 522. By installing the buckle frames 523 inside the sliding cavity, the position of the square pin 522 can be limited with the assistance of the limit spring 524 and in cooperation with the positioning groove 526, so that the limit plate 511 can be restricted below the fuselage 1.

[0034] Specifically, the shifting block 525 is slidably connected to the inner wall of the sliding cavity, and the shifting block 525 abuts against the lower surface of the limiting plate 511 .

[0035] In this embodiment, the buckle frame 523 can be moved by pulling the shift block 525 fixedly connected to the buckle frame 523 under the operation of the user, so that the user can operate the buckle frame 523 to perform disassembly operations.

[0036] Working principle: When using the cleaning device to clean the heat sink, turn on the switch on the body 1, and then the driving mechanism and the vacuum pump 514 located in the guide shell 3 are powered on. The driving mechanism is powered on to drive the cleaning brush 4 to rotate, and the vacuum pump 514 works with the connecting pipe 2 to extract the air at the guide shell 3, and then the cleaning brush 4 is placed on the surface of the heat sink. The cleaning brush 4 rotates to clean the dust on the surface of the heat sink. The cleaned dust is sucked into the connecting pipe 2 through the suction force generated by the guide shell 3. The connecting pipe 2 guides the dust-containing air through the isolation funnel 516 and enters the storage box 513. At the same time, the dust-containing air continues to be extracted by the vacuum pump 514, and the extracted air gradually passes through the filter element 515. The filter element 5 15 filters the dust in the air, and the filtered air is discharged under the guidance of the vacuum pump 514 and the breathable net 512, thereby reducing the air pressure in the storage area. When the cleaning operation is completed and the dust inside the storage box 513 needs to be processed, the shifting blocks 525 on the four sides are simultaneously moved, and the shifting blocks 525 cooperate with the buckle frame 523 to squeeze the limit spring 524. The limit spring 524 is squeezed and deformed to lose the constraint on the buckle frame 523. The buckle frame 523 loses the constraint and breaks away from the positioning groove 526. When the buckle frame 523 moves to the maximum spacing, the limit plate 511 can be pulled downward, and the limit plate 511 pulls the storage box 513 under force. When the storage box 513 is completely separated from the fuselage 1, the dust in the storage box 513 can be processed.

Claims

1. An automatic cleaning device for a heat sink of an LCD projector, comprising a body (1), a connecting pipe (2) and an auxiliary component (5), characterized in that: The connecting tube (2) is fixedly connected to the upper surface of the fuselage (1), the connecting tube (2) is connected to the inner wall of the fuselage (1), the upper surface of the connecting tube (2) is fixedly connected to a guide shell (3), the guide shell (3) is connected to the inner wall of the connecting tube (2), the inner wall of the guide shell (3) is rotatably connected to a cleaning brush (4), the inner wall of the guide shell (3) is provided with a driving mechanism, the cleaning brush (4) is bolted to the driving end of the driving mechanism, the driving mechanism is electrically connected to the fuselage (1), and the auxiliary component (5) is provided on the inner wall of the fuselage (1); The auxiliary component (5) comprises a storage unit (51), the storage unit (51) comprises a limiting plate (511), the limiting plate (511) is arranged on the lower surface of the body (1), a circular hole is opened on the surface of the limiting plate (511), a breathable net (512) is fixedly connected to the inner wall of the circular hole of the limiting plate (511), a storage box (513) is fixedly connected to the upper surface of the limiting plate (511), and a storage box (513) is fixedly connected to the upper surface of the limiting plate (511). An air pump (514) is provided, the air pump (514) is electrically connected to the body (1), the output end of the air pump (514) is connected to the air permeable net (512), a filter element (515) is installed on the upper surface of the limit plate (511), the filter element (515) is sleeved with the surface of the air pump (514), an isolation funnel (516) is fixedly connected to the inner wall of the body (1), and the isolation funnel (516) is connected to the inner wall of the connecting pipe (2); The auxiliary component (5) further comprises an assembly unit (52), the assembly unit (52) comprising a square pin (522), a slot (521) is provided on the lower surface of the body (1), the square pin (522) is fixedly connected to the upper surface of the limit plate (511), the square pin (522) is plugged into the inner wall of the slot (521), a sliding cavity is provided at the connection between the square pin (522) and the limit plate (511), and the square pin (522) and the limit plate (511) are fixedly connected to the upper surface of the limit plate (511). The positioning plate (511) is located on the inner wall of the sliding cavity and is slidably connected to a buckle frame (523); the side surface of the buckle frame (523) is fixedly connected to a limit spring (524); the limit spring (524) is fixedly connected to the inner wall of the sliding cavity; the lower surface of the buckle frame (523) is fixedly connected to a shift block (525); the inner wall of the body (1) located in the card slot (521) is provided with a positioning slot (526); the buckle frame (523) is plugged into the inner wall of the positioning slot (526).

2. The automatic cleaning device for heat sink of LCD projector according to claim 1, characterized in that: The storage box (513) is plugged into the inner wall of the body (1), and the storage box (513) is in communication with the inner wall of the body (1).

3. The automatic cleaning device for heat sink of LCD projector according to claim 1, characterized in that: The input end of the air extraction pump (514) is in communication with the inner wall of the storage box (513), and the filter element (515) is located on the inner wall of the storage box (513).

4. The automatic cleaning device for heat sink of LCD projector according to claim 1, characterized in that: The isolation funnel (516) is located inside the storage box (513), and the isolation funnel (516) is communicated with the inside of the storage box (513).

5. The automatic cleaning device for heat sink of LCD projector according to claim 1, characterized in that: The number of the square pins (522) is two, and the two square pins (522) are arranged front-to-back symmetrically with respect to the limiting plate (511).

6. The automatic cleaning device for heat sink of LCD projector according to claim 1, characterized in that: The number of the buckle frames (523) is four, and the four buckle frames (523) are arranged diagonally with respect to the fuselage (1), and the buckle frames (523) penetrate the side surface of the square pin (522).

7. The automatic cleaning device for heat sink of LCD projector according to claim 1, characterized in that: The shift block (525) is slidably connected to the inner wall of the sliding cavity, and the shift block (525) is in contact with the lower surface of the limiting plate (511).

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