Dust cleaning device for projector

Abstract

The utility model provides a dust cleaning device for a projector, which comprises a shell, a liquid crystal screen arranged on the shell, a liquid crystal board protection board arranged on one side of the liquid crystal screen, a reflecting board arranged on one side of the liquid crystal board protection board, an included angle formed between the liquid crystal board protection board and the reflecting board, and a dust cleaning mechanism arranged between the liquid crystal board protection board and the reflecting board, a rotating device is arranged at the bottom of the support, and a brush roller is arranged on the dust cleaning mechanism. According to the whole structure, dust on the surface of the liquid crystal board protection board or the reflecting board can be cleaned, and the phenomena of blurring, spots or uneven colors of a projection picture are avoided. And meanwhile, the dust is prevented from absorbing and reflecting part of light to reduce the brightness of the projector. The phenomena that the surface is abraded or scratched and the aging of parts is accelerated due to friction between tiny particles in dust and a liquid crystal panel protection plate or a reflecting plate are avoided, and the dust collection device has a relatively high popularization value.

Description

TECHNICAL FIELD

[0001] The utility model relates to teaching equipment field especially is related to the cleaning dust device for projector. BACKGROUND

[0002] In the modern intelligent teaching environment, the projector will be used in multimedia teaching and distance teaching, and teachers can use the projector to project the content such as courseware, video and picture on the computer to the large screen for students to learn. The projector inhales air through the fan and then blows out from the heat dissipation port or the air hole to dissipate heat. Dust, sand particles or other small particles in the air will flow into the projector along with the air flow. These particles will gradually accumulate inside the projector.

[0003] If the dust in the projector is not cleaned in time, the dust accumulated on the liquid crystal panel protection plate or the reflecting plate will block or scatter part of the light, resulting in problems such as blur, spots or uneven color of the projected image. This reduces the clarity and contrast of the image and affects the viewing experience. Dust can absorb and reflect part of the light, resulting in a decrease in the brightness of the projector. The small particles in the dust may rub against the liquid crystal panel protection plate or the reflecting plate, causing surface wear or scratches and accelerating the aging of the components. Therefore, the cleaning dust device for projector is proposed to solve the above problems. SUMMARY

[0004] The utility model provides a cleaning dust device for projector, solves the projector dust accumulation on the liquid crystal panel protection plate or the reflecting plate, will block or scatter part of the light, has reduced the clarity and contrast of the image, dust can absorb and reflect part of the light, result in the decrease in the brightness of the projector, dust and liquid crystal panel protection plate or the friction of reflecting plate, accelerates the aging of the component problem.

[0005] To solve the above technical problems, the technical scheme adopted by the utility model is: a cleaning dust device for projector, including the casing, the casing is equipped with the liquid crystal screen, one side of liquid crystal screen is equipped with the liquid crystal panel protection plate, one side of liquid crystal panel protection plate is equipped with the reflecting plate, and there is an included angle between the liquid crystal panel protection plate and the reflecting plate. A dust cleaning mechanism is arranged between the liquid crystal panel protection plate and the reflecting plate, the dust cleaning mechanism includes a bracket, a rotating device is arranged at the bottom of the bracket, and a fur roller is arranged on the dust cleaning mechanism.

[0006] In the preferred scheme, the casing is provided with a projection port on one side, the casing is provided with a first clamping groove and a second clamping groove, the first clamping groove and the second clamping groove have an included angle, and an arc-shaped groove is arranged between the first clamping groove and the second clamping groove.

[0007] In the preferred scheme, the liquid crystal panel protection plate is installed on the first clamping groove, and the reflecting plate is installed on the second clamping groove.

[0008] In the preferred scheme, the casing is provided with a rotating lens on one side.

[0009] In the preferred solution, the support has guide cylinders at both ends, the guide cylinders have side grooves on one side, the guide cylinders have rotating shafts at the bottom, and the guide cylinders have rotatingly connected lead screws.

[0010] In the preferred solution, one of the rotating shafts is rotatingly connected to the shell, the other rotating shaft slides against the arc-shaped groove, and the lead screw has a first bevel gear at one end.

[0011] In the preferred solution, the connecting cylinder has a bidirectional motor, the bidirectional motor has rotating shafts at both ends, the rotating shafts have second bevel gears at one end, and the second bevel gears mesh with the first bevel gears.

[0012] In the preferred solution, the rotating device includes a gear ring, the gear ring has a meshing gear on one side, the gear has a first motor, and the gear is installed on the shell.

[0013] In the preferred solution, the shell has a bottom plate at the bottom, the bottom plate has a plurality of grommets at the bottom, the bottom plate has a detachable disassembly plate, and the disassembly plate has two dust collection grooves at the top.

[0014] The beneficial effects of the present application are as follows: when the screen is projected and the dust is cleaned, the first motor of the rotating device is driven to rotate the gear, rotate the gear ring, rotate one of the guide cylinders relative to the shell, and slide the rotating shaft on the other guide cylinder against the arc-shaped groove, so that the support is rotated to one side of the liquid crystal panel protection plate, the wool roller is abutted against the liquid crystal panel protection plate, the bidirectional motor is driven to rotate the two first bevel gears, rotate the two lead screws, and lift the wool roller relative to the support. The wool roller cleans the surface of the liquid crystal panel protection plate, and when the dust cleaning of the surface of the liquid crystal panel protection plate is completed, the rotating device is reversely driven to abut the support against the reflecting plate, the bidirectional motor is driven to clean the reflecting plate with the wool roller, and the dust is collected in the dust collection grooves of the bottom plate. After the liquid crystal panel protection plate and the reflecting plate are cleaned, the bidirectional motor is driven to move the wool roller to the top or bottom end of the support, so as to avoid the wool roller blocking the line of sight of the liquid crystal panel protection plate.

[0015] The overall structure can clean the dust on the surface of the liquid crystal panel protection plate or the reflecting plate at regular intervals, avoid the accumulation of dust on the liquid crystal panel protection plate or the reflecting plate, block or scatter part of the light, cause the projection screen to appear blurred, spotted or uneven in color, and avoid the dust absorbing and reflecting part of the light, causing the brightness of the projector to decrease. The small particles in the dust may rub against the liquid crystal panel protection plate or the reflecting plate, causing surface wear or scratches, accelerating the aging of the components, and having great popularization value. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be further described below in conjunction with the drawings and examples.

[0017] Figure 1 This is an axonometric view of the overall structure of this utility model;

[0018] Figure 2 This is an axonometric view of the overall structure of this utility model from another perspective;

[0019] Figure 3 This is an exploded view of the overall structure of this utility model;

[0020] Figure 4 This is an axonometric view of a partial structure of this utility model;

[0021] Figure 5 This is an axial view of the housing of this utility model;

[0022] Figure 6 This is an axonometric view of the dust removal mechanism of this utility model;

[0023] Figure 7 This is a cross-sectional view of the dust removal mechanism of this utility model;

[0024] Figure 8 This is a utility model Figure 7 A magnified view of A in the middle;

[0025] In the figure: housing 1; projection port 101; first slot 102; second slot 103; arc groove 104; rotating lens 2; chassis 3; disassembly plate 301; washer ring 302; LCD screen 4; LCD panel protection plate 5; reflector 6; dust removal mechanism 7; bracket 8; guide cylinder 801; side groove 802; rotating shaft 803; connecting cylinder 804; rotating device 9; gear ring 901; gear 902; first motor 903; brush roller 10; threaded seat 1001; lead screw 11; first bevel gear 12; second bevel gear 13; rotating shaft 14; bidirectional motor 15. Detailed Implementation

[0026] Example 1:

[0027] like Figures 1-8 The dust cleaning device for a projector includes a housing 1, on which an LCD screen 4 is mounted. A protective plate 5 is located on one side of the LCD screen 4, and a reflector 6 is located on the other side of the protective plate 5. The protective plate 5 and the reflector 6 form an angle. A dust cleaning mechanism 7 is located between the protective plate 5 and the reflector 6. The dust cleaning mechanism 7 includes a support 8, a rotating device 9 at its bottom, and a brush roller 10. With this structure, light from the LCD screen 4 passes through the protective plate 5 and illuminates the reflector 6, is reflected by the reflector 6, and then shines onto a rotating lens 2, which in turn illuminates the screen.

[0028] When the screen appears on the projection to clean dust, drive the first motor 903 of the rotating device 9, so that the gear 902 rotates, so that the gear ring 901 rotates, so that one of the guide cylinders 801 rotates relative to the shell 1, the other guide cylinder 801 on the rotating shaft 803 slides on the arc-shaped groove 104, so that the support 8 rotates to the side of the liquid crystal panel protection plate 5, the wool roller 10 abuts on the liquid crystal panel protection plate 5, drive the bidirectional motor 15, so that the two first bevel gears 12 rotate, so that the two lead screws 11 rotate, so that the wool roller 10 lifts relative to the support 8. So that the wool roller 10 cleans the surface of the liquid crystal panel protection plate 5, when the surface of the liquid crystal panel protection plate 5 is cleaned, reverse drive the rotating device 9, so that the support 8 abuts on the reflecting plate 6, drive the bidirectional motor 15, so that the wool roller 10 cleans the reflecting plate 6, the dust is collected on the dust collecting groove of the chassis 3. After the liquid crystal panel protection plate 5 and the reflecting plate 6 are cleaned, drive the bidirectional motor 15, so that the wool roller 10 moves to the top or bottom end of the support 8, to avoid the wool roller 10 blocking the line of sight of the liquid crystal panel protection plate 5.

[0029] The overall structure can clean the dust on the surface of the liquid crystal panel protection plate 5 or the reflecting plate 6 at regular intervals, avoid the dust accumulated on the liquid crystal panel protection plate or the reflecting plate, which will block or scatter part of the light, cause the projection picture to appear blurred, spotted or uneven color phenomenon. At the same time, avoid the dust to absorb and reflect part of the light, cause the brightness of the projector to decrease. The tiny particles in the dust may rub with the liquid crystal panel protection plate or the reflecting plate, cause the surface to wear or scratch, accelerate the phenomenon of component aging.

[0030] In the preferred scheme, the shell 1 side is provided with a projection port 101, the shell 1 is provided with a first clamping groove 102 and a second clamping groove 103, the first clamping groove 102 and the second clamping groove 103 exist angle, the first clamping groove 102 and the second clamping groove 103 are provided with an arc-shaped groove 104. By this structure, the first clamping groove 102 and the second clamping groove 103 exist angle, so that the light of the liquid crystal screen 4 passes through the liquid crystal panel protection plate 5 and irradiates on the reflecting plate 6, reflects to the rotating lens 2 through the reflecting plate 6, and then irradiates to the screen through the rotating lens 2.

[0031] In the preferred scheme, the liquid crystal panel protection plate 5 is installed on the first clamping groove 102, and the reflecting plate 6 is installed on the second clamping groove 103.

[0032] In the preferred scheme, the shell 1 side is provided with a rotating lens 2. By this structure, the light of the liquid crystal screen 4 passes through the liquid crystal panel protection plate 5 and irradiates on the reflecting plate 6, reflects to the rotating lens 2 through the reflecting plate 6, and then irradiates to the screen through the rotating lens 2.

[0033] Preferably, the support 8 is provided with guide sleeves 801 at both ends, the guide sleeves 801 are provided with side grooves 802 at one side, the guide sleeves 801 are provided with rotating shafts 803 at the bottom, the guide sleeves 801 are provided with rotatingly connected lead screws 11, and the guide sleeves 801 are provided with connecting sleeves 804. Thus, the two ends of the wool roller 10 are provided with threaded seats 1001, the threaded seats 1001 are threadedly connected with the lead screws 11. The two ends of the wool roller 10 abut against the side grooves 802.

[0034] Preferably, one of the rotating shafts 803 is rotatingly connected with the shell 1, the other rotating shaft 803 slides against the arc-shaped groove 104, and the lead screw 11 is provided with a first bevel gear 12 at one end. Thus, the rotating shaft 803 at the bottom of the guide sleeve 801 provided with the rotating device 9 is rotatingly connected with the shell 1, and the rotating shaft 803 at the bottom of the guide sleeve 801 without the rotating device 9 slides against the arc-shaped groove 104.

[0035] Preferably, the connecting sleeve 804 is provided with a bidirectional motor 15, the bidirectional motor 15 is provided with rotating shafts 14 at both ends, the rotating shafts 14 are provided with second bevel gears 13 at one end, and the second bevel gears 13 are meshed with the first bevel gears 12. Thus, the bidirectional motor 15 is driven to rotate the two second bevel gears 13, so as to rotate the two first bevel gears 12, and rotate the two lead screws 11, so as to lift or lower the wool roller 10 relative to the support 8. The wool roller 10 is used to clean the surface of the liquid crystal panel protection plate 5. After the cleaning of the surface of the liquid crystal panel protection plate 5 is completed, the rotating device 9 is reversely driven to make the support 8 abut against the reflecting plate 6, and the bidirectional motor 15 is driven to clean the reflecting plate 6, and the dust is collected in the dust collecting groove of the bottom disc 3.

[0036] Preferably, the rotating device 9 comprises a gear ring 901, the gear ring 901 is provided with a meshed gear 902 at one side, the gear 902 is provided with a first motor 903, and the gear 902 is mounted on the shell 1. Thus, the first motor 903 of the rotating device 9 is driven to rotate the gear 902, so as to rotate the gear ring 901, and rotate one of the guide sleeves 801 relative to the shell 1, and the rotating shaft 803 on the other guide sleeve 801 slides against the arc-shaped groove 104, so as to rotate the support 8 to one side of the liquid crystal panel protection plate 5, and make the wool roller 10 abut against the liquid crystal panel protection plate 5.

[0037] In the preferred scheme, the bottom of the shell 1 is provided with a bottom disc 3, the bottom of the bottom disc 3 is provided with a plurality of gaskets 302, the bottom disc 3 is provided with a detachable dismounting disc 301, the top of the dismounting disc 301 is provided with two dust collecting grooves. With the structure, the two dust collecting grooves are respectively located at the side of the first clamping groove 102 and the second clamping groove 103, when the dust cleaning mechanism 7 cleans the dust on the surface of the liquid crystal panel protection plate 5 or the reflecting plate 6, the dust falls on the dust collecting grooves, the dismounting disc 301 is connected with the bottom disc 3 through bolts, when the dust collecting grooves collect dust for a period of time, the dust in the shell 1 is cleaned by dismounting the dismounting disc 301.

[0038] The above-mentioned embodiments are only the preferred technical solutions of the present application, and should not be regarded as the limitation of the present application. The protection scope of the present application should be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features recorded in the claims. That is, the equivalent replacement improvement within the scope is also within the protection scope of the present application.

Claims

1. A dust cleaning device for a projector, characterized by: Including shell (1), shell (1) is equipped with LCD screen (4), one side of LCD screen (4) is equipped with LCD panel protection plate (5), one side of LCD panel protection plate (5) is equipped with reflector (6), and there is an angle between LCD panel protection plate (5) and reflector (6), and dust cleaning mechanism (7) is arranged between LCD panel protection plate (5) and reflector (6), dust cleaning mechanism (7) includes support (8), the bottom of support (8) is equipped with rotating device (9), and the upper of dust cleaning mechanism (7) is equipped with hair roller (10).

2. The dust cleaning device for a projector according to claim 1, wherein: One side of shell (1) is equipped with projection port (101), shell (1) is equipped with first clamping groove (102) and second clamping groove (103), and the first clamping groove (102) and the second clamping groove (103) exist angle, and the first clamping groove (102) and the second clamping groove (103) are equipped with arc slot (104).

3. The dust cleaning device for a projector according to claim 2, wherein: LCD panel protection plate (5) is installed on the first clamping groove (102), and reflector (6) is installed on the second clamping groove (103).

4. The dust cleaning device for a projector according to claim 1, wherein: One side of shell (1) is equipped with rotating lens (2).

5. The dust cleaning device for a projector according to claim 1, wherein: Both ends of support (8) are equipped with guide cylinder (801), one side of guide cylinder (801) is equipped with side groove (802), the bottom of guide cylinder (801) is equipped with rotating shaft (803), guide cylinder (801) is equipped with rotatingly connected screw rod (11), and two guide cylinders (801) are equipped with connecting cylinder (804).

6. The dust cleaning device for a projector according to claim 5, wherein the One rotating shaft (803) is rotatably connected with shell (1), and the other rotating shaft (803) is slidably arranged on arc slot (104), one end of screw rod (11) is equipped with first bevel gear (12).

7. The dust cleaning device for a projector according to claim 5, wherein: Connecting cylinder (804) is equipped with bidirectional motor (15), both ends of bidirectional motor (15) are equipped with rotating shaft (14), one end of rotating shaft (14) is equipped with second bevel gear (13), and second bevel gear (13) is engaged with first bevel gear (12).

8. The dust cleaning device for a projector according to claim 1, wherein: Rotating device (9) includes gear ring (901), one side of gear ring (901) is equipped with meshing gear (902), gear (902) is equipped with first motor (903), and gear (902) is installed on shell (1).

9. The dust cleaning device for a projector according to claim 1, wherein: The bottom of shell (1) is equipped with bottom disc (3), the bottom of bottom disc (3) is equipped with a plurality of pad rings (302), and the upper of bottom disc (3) is equipped with detachable dismounting disc (301), and the top of dismounting disc (301) is equipped with two dust collecting grooves.

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