An outdoor mosquito-proof painting board

Abstract

The present invention discloses an outdoor mosquito-proof drawing board. Its technical key points are as follows: It includes a main bracket and a secondary bracket that are connected to each other. A drawing board is provided on the main bracket, and a mosquito-proof device is provided at the bottom of the drawing board. The mosquito-proof device includes: a liquid storage tank, a housing, and an inlet and an outlet are provided on the housing; an atomization unit, a fan, and a diffusion cover. The diffusion cover is arranged on the lower side of the atomization unit and is connected to the housing, and the position of the diffusion cover corresponds to the position of the outlet; a diffusion pipe is connected to the fan and the diffusion cover; the diffusion cover includes an outer cover and an inner cover, and a diffusion groove is formed between the outer cover and the inner cover. The diffusion groove is communicated with the diffusion pipe, and mosquito-proof holes are formed on the inner side of the inner cover. The mosquito-proof holes are located between the atomization unit and the outlet; a mosquito-proof switch is provided on the main bracket, and the mosquito-proof switch is connected to the fan and the atomization unit. The present invention can prevent users from being bitten by mosquitoes when sketching outdoors.

Description

Technical Field

[0001] The present invention relates to the field of drawing boards, and more particularly to an outdoor mosquito-proof drawing board. Background Art

[0002] A drawing board refers to a flat board used to pad drawing paper during painting. It is usually installed on a bracket for people to use. It is commonly used for sketching, watercolor, and oil painting. When painting outdoors, people often sit for several hours and are easily bitten by mosquitoes. Currently, the way for art students to deal with this is to apply mosquito repellent liquid. However, due to the long painting time outdoors, the mosquito repellent liquid will become ineffective, and they also need to carry the mosquito repellent liquid additionally during the painting process, increasing the burden of carrying. Summary of the Invention

[0003] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide an outdoor mosquito-proof drawing board that can prevent users from being bitten by mosquitoes when painting outdoors.

[0004] To achieve the above purpose, the present invention provides the following technical solution: An outdoor mosquito-proof drawing board, including a main bracket and a sub-bracket connected to each other. A drawing board is provided on the main bracket, and a mosquito-proof device is provided at the bottom of the drawing board. The mosquito-proof device includes:

[0005] A liquid storage tank, fixedly arranged on the back of the drawing board;

[0006] A housing, arranged on the liquid storage tank, and an inlet and an outlet are provided on the housing;

[0007] An atomization unit, arranged on the liquid storage tank and located inside the housing, and the atomization unit is internally connected to the liquid storage tank;

[0008] A fan, arranged on the housing, adjacent to the atomization unit, and the air inlet of the fan is connected to the inlet;

[0009] A diffusion cover, the diffusion cover is arranged on the lower side of the atomization unit and connected to the housing, and the position of the diffusion cover corresponds to the position of the outlet;

[0010] A diffusion pipe, connecting the fan and the diffusion cover;

[0011] The diffusion cover includes an outer cover and an inner cover. A diffusion groove is formed between the outer cover and the inner cover, and the diffusion groove is connected to the diffusion pipe. The inner side of the inner cover is provided with mosquito-proof holes, and the mosquito-proof holes are located between the atomization unit and the outlet;

[0012] A mosquito-proof switch is provided on the main bracket, and the mosquito-proof switch is connected to the fan and the atomization unit.

[0013] As a further improvement of the present invention, the diffusion pipe gradually narrows from the fan to the diffusion cover.

[0014] As a further improvement of the present invention, a ring-shaped first protrusion is provided at one end of the diffusion duct connected to the fan, and a first card slot is provided at the air outlet of the fan. The shape and size of the first protrusion correspond to those of the first card slot.

[0015] As a further improvement of the present invention, the connection between the diffusion duct and the outer cover is tangentially arranged, and diffusion blades are sleeved on the inner cover.

[0016] As a further improvement of the present invention, the outlet is arc-shaped and inclined.

[0017] As a further improvement of the present invention, a positioning slot is provided at the opening of the outer cover, and the shape and position of the positioning slot correspond to those of the opening.

[0018] As a further improvement of the present invention, an auxiliary duct is provided on the diffusion duct. The input end of the auxiliary duct is communicated with the side of the diffusion duct close to the fan, and the output end of the auxiliary duct is connected to the outer cover, so that the auxiliary duct is communicated with the diffusion slot. The auxiliary duct is arc-shaped and bent, and the auxiliary duct gradually narrows from the fan to the diffusion cover. The connection between the auxiliary duct and the outer cover is tangentially arranged.

[0019] As a further improvement of the present invention, a second card slot is provided on the side of the atomization unit facing away from the fan, a support rod is provided on the auxiliary duct, and a clamping block is provided at one end of the support rod away from the auxiliary duct.

[0020] As a further improvement of the present invention, a switch rod is provided on the main bracket. The switch rod is rotatably arranged on the main bracket. The switch rod is connected to the mosquito prevention switch. A torsion spring is provided between the switch rod and the main bracket. A first magnet is provided on the switch rod, and a second magnet is provided on the sub-bracket. The first magnet and the second magnet repel each other.

[0021] As a further improvement of the present invention, a receiving groove is provided on the main bracket. The receiving groove is arranged adjacent to the switch rod, and the switch rod can be embedded in the receiving groove.

[0022] The beneficial effect of the present invention is to prevent users from being bitten by mosquitoes when painting outdoors. Description of the Drawings

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the drawing board;

[0024] Figure 2 It is a structural schematic diagram of the liquid storage tank and the housing;

[0025] Figure 3 It is a schematic diagram of the internal structure of the housing;

[0026] Figure 4It is a schematic structural diagram of a fan and a diffusion duct;

[0027] Figure 5 It is a schematic structural diagram of a switch rod, a first magnet, a second magnet, and a receiving groove.

[0028] Marking description: 1. Main bracket; 11. Mosquito prevention switch; 2. Sub-bracket; 3. Drawing board; 4. Mosquito prevention device; 41. Liquid storage tank; 42. Housing; 421. Inlet; 422. Outlet; 43. Atomization unit; 431. Second card slot; 432. Support rod; 4321. Card block; 44. Fan; 441. First card slot; 45. Diffusion cover; 451. Outer cover; 4511. Positioning groove; 452. Inner cover; 453. Diffusion groove; 454. Mosquito prevention hole; 455. Diffusion leaf; 46. Diffusion duct; 461. First protrusion; 47. Auxiliary duct; 51. Switch rod; 511. First magnet; 52. Second magnet; 53. Receiving groove. Detailed implementation mode

[0029] Next, the present invention will be further described in detail with reference to the embodiments given in the drawings.

[0030] Refer to Figures 1-5 As shown, an outdoor mosquito prevention drawing board 3 of this embodiment includes a main bracket 1 and a sub-bracket 2 that are connected to each other. The main bracket 1 is provided with a drawing board 3, and the bottom of the drawing board 3 is provided with a mosquito prevention device 4. The mosquito prevention device 4 includes:

[0031] A liquid storage tank 41, fixedly arranged on the back of the drawing board 3;

[0032] A housing 42, arranged on the liquid storage tank 41, and the housing 42 is provided with an inlet 421 and an outlet 422;

[0033] An atomization unit 43, arranged on the liquid storage tank 41 and located inside the housing 42, and the atomization unit 43 is in internal communication with the liquid storage tank 41;

[0034] A fan 44, arranged on the housing 42, adjacent to the atomization unit 43, and the air inlet of the fan 44 is in communication with the inlet 421;

[0035] A diffusion cover 45, the diffusion cover 45 is arranged on the lower side of the atomization unit 43 and is connected to the housing 42, and the position of the diffusion cover 45 corresponds to the position of the outlet 422;

[0036] A diffusion duct 46, connecting the fan 44 and the diffusion cover 45;

[0037] The diffusion cover 45 includes an outer cover 451 and an inner cover 452. There is a diffusion groove 453 between the outer cover 451 and the inner cover 452. The diffusion groove 453 is communicated with a diffusion pipeline 46. The inner side of the inner cover 452 is provided with mosquito-proof holes 454, and the mosquito-proof holes 454 are located between the atomizing unit 43 and the outlet 422.

[0038] A mosquito-proof switch 11 is arranged on the main bracket 1, and the mosquito-proof switch 11 is connected to the fan 44 and the atomizing unit 43.

[0039] Through the above technical solution, a storage battery is arranged on the main bracket 1 for supplying power to the atomizing unit 43 and the fan 44. The atomizing unit 43 is of an existing structure, which extracts the mosquito-proof liquid in the liquid storage tank 41 and atomizes it. A solar charging panel is arranged on the auxiliary bracket 2 or the main bracket 1, and the solar charging panel is connected to the storage battery, which can charge the storage battery when sketching outdoors, avoiding the situation of power exhaustion during use.

[0040] When using the outdoor mosquito-proof drawing board 3, the main bracket 1 and the auxiliary bracket 2 are opened. At this time, the mosquito-proof switch 11 is turned on, and the atomizing unit 43 and the fan 44 operate. The atomizing unit 43 extracts the mosquito-proof liquid in the liquid storage tank 41 and atomizes it. The atomized mosquito-proof liquid is located in the mosquito-proof holes 454. When the fan 44 operates, the air outside the housing 42 is sucked in from the inlet 421, then enters the air inlet of the fan 44, then leaves from the air outlet of the fan 44, enters the diffusion pipeline 46, then passes through the outer cover 451 and enters the diffusion groove 453, and then is output from the diffusion groove 453. According to Bernoulli's principle, when flowing at the same height, the greater the flow rate, the smaller the pressure. After the air flow is output from the diffusion groove 453, it leaves from the outlet 422. The pressure at the position of the outlet 422 is small, so that the atomized mosquito-proof liquid located in the mosquito-proof holes 454 moves towards the outlet 422 side. Furthermore, the atomized mosquito-proof liquid moving towards the outlet 422 will be mixed with the air flow and output from the outlet 422, and then diffuse, so that the mosquito-proof liquid can be atomized and diffused, providing a good mosquito-proof effect near the drawing board 3 (drawing position) and avoiding the user being bitten by mosquitoes when sketching outdoors.. The atomized mosquito-proof liquid and the diffusion groove 453 are isolated by the inner cover 452, avoiding the accumulation of mosquito-proof liquid in the diffusion groove 453, avoiding waste, and ensuring stable mosquito repellent during use. The housing 42 is arranged on the outside to protect the internal atomizing unit 43, fan 44, and diffusion cover 45.

[0041] As a specific improvement embodiment, the diffusion pipeline 46 gradually narrows from the fan 44 to the diffusion cover 45.

[0042] Through the above technical solution, the diffusion duct 46 gradually narrows from the fan 44 towards the diffusion hood 45, causing the wind speed flowing towards the diffusion hood 45 to gradually increase. This in turn increases the flow rate of the air entering the diffusion tank 453, and further increases the flow rate of the air leaving the diffusion tank 453, thereby enhancing the diffusion effect. It can better atomize and output the mosquito repellent liquid, improving the mosquito repellent effect.

[0043] As a specific improvement embodiment, a circular first protrusion 461 is provided at one end of the diffusion duct 46 connected to the fan 44. The air outlet of the fan 44 has a first card slot 441, and the shape and size of the first protrusion 461 correspond to those of the first card slot 441.

[0044] Through the above technical solution, after installing the fan 44 on the atomization unit 43, when installing the diffusion duct 46, insert the first protrusion 461 into the first card slot 441 to complete the preliminary positioning of the diffusion duct 46. Then install the housing 42 to complete the installation. After preliminary positioning, there is no need to hold the housing 42 by hand during installation, which is convenient for installation and simple to disassemble. At the same time, the connection part has good sealing performance and no leakage.

[0045] As a specific improvement embodiment, the connection between the diffusion duct 46 and the outer cover 451 is tangentially arranged, and a diffusion blade 455 is sleeved on the inner cover 452.

[0046] Through the above technical solution, the diffusion blade 455 is rotatably arranged on the inner cover 452, and the connection between the diffusion duct 46 and the outer cover 451 is tangentially arranged, causing the air flow entering the diffusion tank 453 to flow along the extension direction of the diffusion tank 453 and drive the diffusion blade 455 to rotate. The rotation of the diffusion blade 455 causes the air flow entering the diffusion tank 453 to rotate and leave the outlet 422, thereby better diffusing the atomized mosquito repellent liquid in the mosquito repellent holes 454 and further improving the mosquito repellent effect.

[0047] Specifically, the diameter of the inner cover 452 is set to be larger at the top and smaller at the bottom; this causes the air flow input into the diffusion tank 453 by the diffusion duct 46 and the auxiliary duct 47 to be guided by the inclined surface and then act on the diffusion blade 455, further increasing the rotation speed of the diffusion blade 455 and thus enhancing the diffusion effect of the atomized mosquito repellent liquid. At the same time, the change in the diameter of the inner cover 452 results in a larger area of the diffusion blade 455 from the atomization unit 43 towards the opening side of the inner cover 452, further increasing the air flow rate and the intensity of rotation, and thus enhancing the diffusion effect of the mosquito repellent liquid. Also, the area at the opening of the inner cover 452 is reduced, causing a small amount of atomized mosquito repellent liquid to be carried and diffused by more air flow, improving the diffusion effect of the mosquito repellent liquid and thus enhancing the mosquito repellent effect.

[0048] As a specific improvement embodiment, the outlet 422 is arranged in an arc and inclined.

[0049] Through the above technical solution, the outlet 422 is arranged in an arc and inclined, and cooperates with the diffusion blade 455, which can make the atomized mosquito repellent liquid diffuse better, and further improve the mosquito repellent effect.

[0050] As a specific implementation of the improvement, a positioning groove 4511 is provided at the opening of the outer cover 451, and the shape and position of the positioning groove 4511 correspond to the shape and position of the opening.

[0051] Through the above technical solution, after the diffusion pipeline 46 is gradually installed on the fan 44, the diffusion pipeline 46 is initially positioned, and then the housing 42 is installed. At this time, the opening is aligned with the positioning groove 4511, and then the housing 42 is sleeved on the liquid storage tank 41 to complete the fixation. The opening is inserted into the positioning groove 4511 to complete the connection. Through the diffusion pipeline 46 and the diffusion cover 45 fixed integrally from both ends, the position is stable after installation, the structure is simple, and the installation and disassembly are convenient.

[0052] As a specific implementation of the improvement, an auxiliary pipeline 47 is provided on the diffusion pipeline 46. The input end of the auxiliary pipeline 47 is communicated with the side of the diffusion pipeline 46 close to the fan 44, the output end of the auxiliary pipeline 47 is connected with the outer cover 451, so that the auxiliary pipeline 47 is communicated with the diffusion groove 453. The auxiliary pipeline 47 is arranged in an arc and bent, and the auxiliary pipeline 47 gradually shrinks from the fan 44 to the diffusion cover 45, and the connection part of the auxiliary pipeline 47 and the outer cover 451 is tangent.

[0053] Through the above technical solution, the air flow blown by the fan 44 is divided into two parts. One part is transmitted upward through the diffusion pipeline 46 and then enters the diffusion groove 453, and the other part is transmitted through the auxiliary pipeline 47 and enters the diffusion groove 453. The cooperation from two directions can better drive the diffusion blade 455 to rotate, thereby improving the diffusion effect of the mosquito repellent liquid and further improving the mosquito repellent effect.

[0054] The auxiliary pipeline 47 gradually shrinks from the fan 44 to the diffusion cover 45, increasing the flow rate of the gas flowing into the diffusion groove 453, and thus increasing the rotation speed of the diffusion blade 455.

[0055] Both the auxiliary pipeline 47 and the diffusion pipeline 46 are in contact with the housing 42, supporting the inside of the housing 42, thereby improving the structural strength. At the same time, the stability during use is improved, and resonance between the auxiliary pipeline 47 and the diffusion pipeline 46 is avoided.

[0056] At the same time, both the diffusion pipeline 46 and the auxiliary pipeline 47 gradually shrink from the fan 44 to the diffusion cover 45, which can effectively suppress vibration, and then the gas flow rate into the diffusion groove 453, ensuring the diffusion effect.

[0057] As a specific embodiment of the improvement, a second card slot 431 is provided on the side of the atomizing unit 43 facing away from the blower 44. A support rod 432 is provided on the auxiliary pipe 47, and a clamping block 4321 is provided at one end of the support rod 432 away from the auxiliary pipe 47.

[0058] Through the above technical solution, when the diffusion pipe 46 and the auxiliary pipe 47 are installed on the blower 44, the clamping block 4321 on the support rod 432 is aligned with the second card slot 431. After installation, the clamping block 4321 is inserted into the second card slot 431, fixing the auxiliary pipe 47 from multiple angles, improving the stability of the auxiliary pipe 47 during use, avoiding vibration, and having a simple structure and convenient disassembly.

[0059] As a specific embodiment of the improvement, a switch rod 51 is provided on the main bracket 1. The switch rod 51 is rotatably arranged on the main bracket 1. The switch rod 51 is connected to the mosquito-proof switch 11. A torsion spring is provided between the switch rod 51 and the main bracket 1. A first magnet 511 is provided on the switch rod 51, and a second magnet 52 is provided on the sub-bracket 2. The first magnet 511 and the second magnet 52 repel each other.

[0060] Through the above technical solution, when the main bracket 1 and the sub-bracket 2 of the drawing board 3 are opened, the second magnet 52 moves away from the switch rod 51. At this time, the second magnet 52 moves away from the first magnet 511, and the torsion spring resets, driving the switch rod 51 to rotate and turning on the mosquito-proof switch 11. After completing outdoor sketching, when the drawing board 3 is folded up, as the main bracket 1 and the sub-bracket 2 are folded, during this process, the second magnet 52 moves towards the switch rod 51, and the second magnet 52 approaches the first magnet 511 until the repulsive force between the second magnet 52 and the first magnet 511 is greater than the elastic force of the torsion spring, and then the switch rod 51 is pushed to rotate, thereby turning off the mosquito-proof switch 11. When the drawing board 3 is folded up, the switch rod 51 is driven to rotate by the first magnet 511 and the second magnet 52, and the mosquito-proof switch 11 can be turned off. This structure can turn off the mosquito-proof switch 11 without completely folding up the main bracket 1 and the sub-bracket 2, can stably turn off the switch, avoid waste, and does not require additional operations. Just fold and unfold normally, which is convenient to use.

[0061] Specifically, when the switch rod 51 rotates downward and the main bracket 1 and the sub-bracket 2 are opened and unfolded, it cooperates with the torsion spring to unfold under the action of gravity, unfolding more stably and prolonging the service life of the torsion spring.

[0062] As a specific embodiment of the improvement, a receiving groove 53 is provided on the main bracket 1. The receiving groove 53 is arranged adjacent to the switch rod 51, and the switch rod 51 can be embedded in the receiving groove 53.

[0063] Through the above technical solution, after the drawing board 3 is folded, the switch rod 51 rotates into the receiving groove 53, further reducing the volume after folding, making it more portable, and effectively avoiding the situation that the switch rod 51 is broken during the carrying process.

[0064] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An outdoor mosquito-proof painting board, comprising a main bracket (1) and a sub-bracket (2) which are connected to each other. A painting board (3) is provided on the main bracket (1). Characterized in that: A mosquito-proof device (4) is provided at the bottom of the painting board (3). The mosquito-proof device (4) includes: A liquid storage tank (41), fixedly arranged on the back of the painting board (3); A housing (42), arranged on the liquid storage tank (41). An inlet (421) and an outlet (422) are provided on the housing (42); An atomization unit (43), arranged on the liquid storage tank (41) and located inside the housing (42). The atomization unit (43) is internally communicated with the liquid storage tank (41); A blower (44), arranged on the housing (42), adjacent to the atomization unit (43), and the air inlet of the blower (44) is communicated with the inlet (421); A diffusion cover (45), the diffusion cover (45) is arranged on the lower side of the atomization unit (43) and connected to the housing (42). The position of the diffusion cover (45) corresponds to the position of the outlet (422); A diffusion duct (46), connecting the blower (44) and the diffusion cover (45); The diffusion cover (45) includes an outer cover (451) and an inner cover (452). A diffusion groove (453) is formed between the outer cover (451) and the inner cover (452). The diffusion groove (453) is communicated with the diffusion duct (46). The inner side of the inner cover (452) is provided with mosquito-proof holes (454), and the mosquito-proof holes (454) are located between the atomization unit (43) and the outlet (422); A mosquito-proof switch (11) is provided on the main bracket (1), and the mosquito-proof switch (11) is connected to the blower (44) and the atomization unit (43); A switch rod (51) is provided on the main bracket (1). The switch rod (51) is rotatably arranged on the main bracket (1). The switch rod (51) is connected to the mosquito-proof switch (11). A torsion spring is arranged between the switch rod (51) and the main bracket (1). A first magnet (511) is provided on the switch rod (51), and a second magnet (52) is provided on the sub-bracket (2). The first magnet (511) and the second magnet (52) repel each other.

2. The outdoor mosquito-proof painting board according to claim 1, Characterized in that: The diffusion duct (46) gradually narrows from the blower (44) to the diffusion cover (45).

3. The outdoor mosquito-proof painting board according to claim 1 or 2, Characterized in that: An annular first protrusion (461) is provided at one end of the diffusion duct (46) connected to the blower (44). The air outlet of the blower (44) has a first card slot (441). The shape and size of the first protrusion (461) correspond to the shape and size of the first card slot (441).

4. The outdoor mosquito-proof painting board according to claim 1 or 2, Characterized in that: The connection part of the diffusion duct (46) and the outer cover (451) is tangentially arranged, and a diffusion blade (455) is sleeved on the inner cover (452).

5. The outdoor mosquito-proof painting board according to claim 1 or 2, Characterized in that: The outlet (422) is arranged in an arc and inclined.

6. The outdoor mosquito-proof drawing board according to claim 1 or 2, characterized in that: a positioning groove (4511) is provided at the opening of the outer cover (451), and the shape and position of the positioning groove (4511) correspond to the shape and position of the opening.

7. The outdoor mosquito-proof drawing board according to claim 4, characterized in that: an auxiliary pipe (47) is provided on the diffusion pipe (46), the input end of the auxiliary pipe (47) is communicated with one side of the diffusion pipe (46) close to the fan (44), the output end of the auxiliary pipe (47) is connected with the outer cover (451), so that the auxiliary pipe (47) is communicated with the diffusion groove (453), the auxiliary pipe (47) is arranged in an arc shape, the auxiliary pipe (47) gradually shrinks from the fan (44) to the diffusion cover (45), and the connection part of the auxiliary pipe (47) and the outer cover (451) is tangent.

8. The outdoor mosquito-proof drawing board according to claim 7, characterized in that: a second clamping groove (431) is provided on one side of the atomization unit (43) facing away from the fan (44), a support rod (432) is provided on the auxiliary pipe (47), and a clamping block (4321) is provided at one end of the support rod (432) away from the auxiliary pipe (47).

9. The outdoor mosquito-proof drawing board according to claim 1, characterized in that: a receiving groove (53) is provided on the main bracket (1), the receiving groove (53) is arranged adjacent to the switch rod (51), and the switch rod (51) can be embedded in the receiving groove (53).

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