Projector with automatic focusing structure

Abstract

The utility model provides a projector with an automatic focusing structure, which relates to the technical field of focusing projectors and comprises a projector shell, a dustproof module is arranged at the front end of the projector shell and comprises a dustproof front cover, a circular groove is arranged in the dustproof front cover, a cylindrical pin is rotatably connected in the circular groove, and a water drop rotating tooth penetrates through the middle of the cylindrical pin. A round rotating disc is rotationally connected into the dustproof front cover, a sliding groove is formed in the surface of the round rotating disc, the inner wall of the sliding groove is in sliding connection with the cylindrical pin, tooth grooves are formed in the backs of the water drop rotating teeth, clamping teeth are arranged on the inner wall of the dustproof front cover and are in meshed connection with the tooth grooves, and a dustproof circular ring is fixed to the back of the dustproof front cover. And dust is prevented from being adsorbed or entering the interior of the device when the focusing lens is placed down after the focusing lens is used, so that the automatic focusing projector has a dustproof function in daily use, and the daily maintenance requirement of a user is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of a focus-adjusting projector, in particular to a projector with an automatic focus-adjusting structure. Background Art

[0002] With the improvement of living standards and the continuous development of video technology, projection video products are attracting more and more attention from the market. At present, whether it is mobile small business presentations, multimedia conference rooms, classrooms, stadiums, churches, commercial places, large auditoriums, etc., video projection is required, so corresponding projectors are needed.

[0003] In the prior art, with the development of science and technology, projectors are becoming more and more popular, and even projectors with automatic focus are produced. However, the projection lens of the existing automatic focus projector is exposed to the air. Based on the imaging principle of the projector, the dust in the environment should be very small when the projector is working. Otherwise, when the lens is cooled, the dust in the air will continue to be adsorbed in front of the lens, affecting the imaging effect. At the same time, the dust will also enter the inside of the device. The accumulation of dust will also cause the temperature of the internal electronic components to rise, resulting in malfunctions and even burning of components. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a projector with an automatic focusing structure.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: it includes a projector shell, a dustproof assembly block is provided at the front end of the projector shell, the dustproof assembly block includes a dustproof front cover, a circular groove is provided inside the dustproof front cover, a cylindrical pin is rotatably connected inside the circular groove, a water drop rotating tooth penetrates the middle of the cylindrical pin, a circular turntable is rotatably connected inside the dustproof front cover, a slide groove is provided on the surface of the circular turntable, the inner wall of the slide groove is slidably connected to the cylindrical pin, a tooth groove is provided on the back of the water drop rotating tooth, a latch tooth is provided on the inner wall of the dustproof front cover, the latch tooth is meshed with the tooth groove, and a dustproof ring is fixed on the back of the dustproof front cover. In the prior art, with the development of science and technology, projectors are becoming more and more popular, and even projectors with automatic focus are produced. The dust in the lens will not get stuck in the air and may even get into the device if the lens is not in the air and the dust is not absorbed by the lens.

[0006] Preferably, a heat dissipation guide is fixed inside the projector housing, a heat dissipation fan is arranged inside the heat dissipation guide, fixing plates are fixed on both sides of the heat dissipation fan, fixing bolts are fixed on the surface of the fixing plates, the fixing plates are threadedly connected to the heat dissipation guide plates through the fixing bolts, a heat sink is fixed to the bottom of the projector housing, and the back of the heat sink is fixedly connected to the heat dissipation guide plates. In the prior art, existing projectors generally use high-power light sources to meet the requirements of high brightness, and the resulting problem is that the high-power light source will generate extremely high heat during operation, and the heat accumulation will cause the projector to burn due to high temperature. The utility model conducts heat with the help of a heat conduction plate and strengthens airflow exchange with the help of a heat dissipation fan to send out the heat, thereby avoiding self-destruction of the projector due to high temperature.

[0007] Preferably, a support block is provided at the bottom of the projector housing, and the support block includes a support column, the top of the support column is fixedly connected to the projector housing, a circular shaft is fixed to the bottom of the support column, an axis groove is rotatably connected to the surface of the circular shaft, a fixed suction cup is fixed to the bottom of the axis groove, and an auxiliary support foot is fixed to the bottom of the projector housing. By installing a fixed suction cup on the bottom of the projector and adsorbing it on the support surface, the projector can be tilted and rotated in multiple directions with the help of the circular shaft, thereby achieving an automatic focusing projector that is more stable and not easy to slide off the support surface when something needs to be placed under it.

[0008] Preferably, a knob is fixed on the peripheral wall of the circular turntable, and by adding a raised knob, it is more convenient to rotate the circular turntable.

[0009] Preferably, the dustproof ring is made of rubber material, and the durability and softness of the rubber material itself can further improve the dustproof ability of the dustproof assembly.

[0010] Preferably, the heat sink slot is located at the bottom of the projector housing. By placing the heat exhaust hole of the projector at the bottom, the projector can be carried after use to avoid scalding the user.

[0011] Preferably, the bottom of the auxiliary support foot is provided with anti-skid grooves, which provide high anti-skid properties, thereby preventing slipping when using the device.

[0012] Beneficial Effects

[0013] 1. In the prior art, with the development of science and technology, projectors are becoming more and more popular, and even projectors with automatic focus are produced. The dust in the lens will not get stuck in the air and may even get into the device if the lens is not in the air and the dust is not absorbed by the lens.

[0014] 2. In the prior art, existing projectors generally use high-power light sources to meet the requirements of high brightness. The resulting problem is that the high-power light source will generate extremely high heat during operation. The heat accumulation will cause the projector to burn due to high temperature. The utility model uses a heat conduction plate to conduct heat and a heat dissipation fan to enhance airflow exchange to send out heat, thereby preventing the projector from self-destructing due to high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the dustproof assembly of the utility model;

[0017] Figure 3 This is a schematic diagram of the heat dissipation structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the support structure of the utility model.

[0019] Legend:

[0020] 1. Projector housing; 2. Dustproof assembly; 3. Dustproof front cover; 4. Water drop gear; 5. Cylindrical pin; 6. Round turntable; 7. Gear; 8. Dustproof ring; 9. Tooth groove; 10. Slide groove; 11. Heat dissipation guide plate; 12. Cooling fan; 13. Fixing bolt; 14. Fixing plate; 15. Heat dissipation plate; 16. Support assembly; 17. Support column; 18. Round shaft; 19. Shaft groove; 20. Fixed suction cup. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0022] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings. Specific embodiment:

[0024] Reference Figure 1-4A projector with an automatic focusing structure comprises a projector housing 1, a dustproof assembly 2 is arranged at the front end of the projector housing 1, the dustproof assembly 2 comprises a dustproof front cover 3, a circular groove is arranged inside the dustproof front cover 3, a cylindrical pin 5 is rotatably connected inside the circular groove, a water drop rotating gear 4 is penetrated in the middle of the cylindrical pin 5, a circular turntable 6 is rotatably connected inside the dustproof front cover 3, a slide groove 10 is arranged on the surface of the circular turntable 6, the inner wall of the slide groove 10 is slidably connected with the cylindrical pin 5, a tooth groove 9 is arranged on the back of the water drop rotating gear 4, a latch tooth 7 is arranged on the inner wall of the dustproof front cover 3, the latch tooth 7 is meshed with the tooth groove 9, a dustproof ring 8 is fixed on the back of the dustproof front cover 3, a knob is fixed on the peripheral wall of the circular turntable 6, and the material of the dustproof ring 8 is rubber.

[0025] A heat dissipation guide plate 11 is fixed inside the projector housing 1, a heat dissipation fan 12 is arranged inside the heat dissipation guide plate 11, fixing plates 14 are fixed on both sides of the heat dissipation fan 12, fixing bolts 13 are fixed on the surface of the fixing plate 14, and the fixing plate 14 is threadedly connected to the heat dissipation guide plate 11 through the fixing bolts 13. A heat dissipation plate 15 is fixed at the bottom of the projector housing 1, and the back of the heat dissipation plate 15 is fixedly connected to the heat dissipation guide plate 11. A support assembly 16 is arranged at the bottom of the projector housing 1, and the support assembly 16 includes a support column 17, and the top of the support column 17 is fixedly connected to the projector housing 1, and a circular shaft 18 is fixed at the bottom of the support column 17, and an axis groove 19 is rotatably connected on the surface of the circular shaft 18, and a fixed suction cup 20 is fixed at the bottom of the axis groove 19. An auxiliary support foot is fixed at the bottom of the projector housing 1, and the heat dissipation plate 15 card slot is located at the bottom of the projector housing 1, and the bottom of the auxiliary support foot is provided with anti-slip grooves.

[0026] In the prior art, with the development of science and technology, projectors are becoming more and more popular, and even projectors with automatic focusing are produced. The dust in the projector will not enter the interior of the device, and the accumulation of dust will also cause the temperature of the internal electronic components to rise, resulting in failures and even burning of the components. By installing a dustproof assembly 2 at the front end of the focusing lens, when the user needs to use the focusing projector, the circular turntable 6 is rotated to drive the cylindrical pin 5 to slide inward in the slide groove 10, thereby driving the water drop gear 4 connected to the cylindrical pin 5 to engage and rotate with the internal tooth groove 9 of the dustproof front cover 3 by means of the latch tooth 7, so that the water drop gear 4 rotates inward and shrinks to expose the focusing lens. When use is completed, the circular turntable 6 is rotated in the opposite direction to rotate the water drop gear 4 closed and turn off the projector to prevent the focusing lens from being adsorbed or entering the interior of the device when it is put aside after use. The dustproof function of the automatic focusing projector is achieved in daily use, thereby reducing the daily maintenance requirements of the user.

[0027] The working principle of the utility model is as follows: when the user needs to use the focus projector, the circular turntable 6 is rotated to drive the cylindrical pin 5 to slide inward inside the slide groove 10, thereby driving the water drop rotary gear 4 connected to the cylindrical pin 5 to engage and rotate with the tooth groove 9 inside the dustproof front cover 3 by means of the latch tooth 7, so that the water drop rotary gear 4 rotates inward and shrinks to expose the focus lens. When use is completed, the circular turntable 6 is rotated in the opposite direction to rotate the water drop rotary gear 4 closed and turn off the projector to prevent the focus lens from being adsorbed or entering the interior of the device when it is left aside after use.

[0028] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A projector with an automatic focusing structure, comprising a projector housing (1), wherein a dustproof assembly (2) is provided at the front end of the projector housing (1), wherein: The dustproof assembly (2) comprises a dustproof front cover (3), a circular groove is provided inside the dustproof front cover (3), a cylindrical pin (5) is rotatably connected inside the circular groove, a water drop rotating tooth (4) penetrates the middle of the cylindrical pin (5), a circular turntable (6) is rotatably connected inside the dustproof front cover (3), a sliding groove (10) is provided on the surface of the circular turntable (6), the inner wall of the sliding groove (10) is slidably connected to the cylindrical pin (5), a tooth groove (9) is provided on the back of the water drop rotating tooth (4), a latch tooth (7) is provided on the inner wall of the dustproof front cover (3), the latch tooth (7) is meshedly connected to the tooth groove (9), and a dustproof ring (8) is fixed to the back of the dustproof front cover (3).

2. The projector with automatic focusing structure according to claim 1, characterized in that: A heat dissipation guide plate (11) is fixed inside the projector housing (1), a heat dissipation fan (12) is arranged inside the heat dissipation guide plate (11), fixing plates (14) are fixed on both sides of the heat dissipation fan (12), fixing bolts (13) are fixed on the surface of the fixing plates (14), the fixing plates (14) are threadedly connected to the heat dissipation guide plate (11) through the fixing bolts (13), a heat dissipation plate (15) is fixed to the bottom of the projector housing (1), and the back of the heat dissipation plate (15) is fixedly connected to the heat dissipation guide plate (11).

3. The projector with automatic focusing structure according to claim 1, characterized in that: A support assembly (16) is provided at the bottom of the projector housing (1), the support assembly (16) comprises a support column (17), the top of the support column (17) is fixedly connected to the projector housing (1), a round shaft (18) is fixed at the bottom of the support column (17), a shaft groove (19) is rotatably connected to the surface of the round shaft (18), a fixed suction cup (20) is fixed at the bottom of the shaft groove (19), and an auxiliary support foot is fixed at the bottom of the projector housing (1).

4. The projector with automatic focusing structure according to claim 1, characterized in that: A knob is fixed on the peripheral wall of the circular turntable (6).

5. The projector with automatic focusing structure according to claim 1, characterized in that: The dustproof ring (8) is made of rubber.

6. The projector with automatic focusing structure according to claim 2, characterized in that: The heat sink (15) slot is located at the bottom of the projector housing (1).

7. The projector with automatic focusing structure according to claim 3, characterized in that: The bottom of the auxiliary support foot is provided with anti-skid grooves.

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