Vehicle seat with ventilation function and fire truck

Abstract

The utility model provides a vehicle seat with ventilation function and fire engine belongs to vehicle seat technical field, including seat body, seat body has cushion and initiative ventilation system, initiative ventilation system includes control unit and ventilation fan, ventilation fan sets up inside the cushion, and the top of cushion is distributed with ventilation, and ventilation fan is controlled by control unit, the air inlet of ventilation fan is linked together with ventilation and sets up, and the air outlet of ventilation fan is linked to the outside of seat body. After starting ventilation fan, the air of cushion top inhales from top to bottom, and the passenger basically feels not the violent flow of air after sitting, but still can guarantee the air circulation at the cushion, ensures the air circulation at the cushion under the condition that air does not blow the human body directly, improves the comfort of riding, avoids the hot of hip, and avoids the situation that the human body chills because of air blowing directly.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle seat technology, and more specifically, it relates to a vehicle seat with ventilation function and a fire truck. Background Technology

[0002] Firefighters often wear protective suits and breathing apparatus during missions. Considering the complexity of the on-site environment and the unpredictability of the weather, a suitable interior temperature is needed in the fire truck to help firefighters maintain and recover their energy. However, even though the truck is equipped with air conditioning, when people are seated, the seat cushions are in contact with the buttocks, making it difficult for the area in contact with the seat to circulate air. In summer, sitting for extended periods can cause the buttocks to feel stuffy and damp, leading to discomfort.

[0003] In the prior art, Chinese utility model patent CN223407817U discloses a ventilation and airflow guiding structure for a car seat. In this design, a fan is installed inside the seat cushion, and multiple ventilation vents are provided on the cushion. The fan's airflow direction is directed towards the seat cushion, meaning the fan blows air upwards through the ventilation vents onto the body, improving seating comfort and preventing stuffiness in the buttocks. However, for individuals such as firefighters who sweat profusely after duty, direct fan airflow could easily lead to catching a cold or other health problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a vehicle seat, fire truck seat, and fire truck with ventilation function. By using a fan inside the seat cushion that blows air downwards in the opposite direction, it ensures air circulation in the seat cushion while reducing direct airflow to the human body, thus avoiding harm to human health.

[0005] To achieve the above objectives, the present invention provides a vehicle seat with ventilation function, including a seat body, a seat cushion, and an active ventilation system. The active ventilation system includes a control unit and a ventilation fan. The ventilation fan is located inside the seat cushion, and ventilation openings are distributed on the top of the seat cushion. The ventilation fan is controlled by the control unit. The air inlet of the ventilation fan is connected to the ventilation openings, and the air outlet of the ventilation fan is connected to the outside of the seat body. After the ventilation fan is activated, compared with the prior art, the air at the top of the seat cushion changes from being blown out from bottom to top to being drawn in from top to bottom. After the occupant sits down, they basically do not feel a strong airflow, but air circulation in the seat cushion is still guaranteed. This ensures that air circulation in the seat cushion is achieved without directly blowing air onto the body, improving riding comfort, preventing stuffiness in the buttocks, and avoiding the situation of catching a cold due to direct airflow.

[0006] Optionally, the cushion has a base, a three-dimensional ventilation mesh, and a surface layer. The base has a mounting cavity with an opening at the top. A ventilation fan is fixedly installed inside the mounting cavity, with its air inlet facing upwards. The three-dimensional ventilation mesh is located on top of the base, and the surface layer is located on top of the three-dimensional ventilation mesh, with ventilation openings on the surface layer. The three-dimensional ventilation mesh is a mesh structure of a certain thickness. Air entering from the ventilation openings flows along the bottom of the entire surface layer within the three-dimensional ventilation mesh, ensuring effective air circulation throughout.

[0007] Optionally, the mounting cavity is vertically integrated through the base, and the air outlet of the ventilation fan faces downwards. The air blown by the ventilation fan is exhausted from the bottom of the base, and will not blow onto adjacent seats, thus not affecting passengers in adjacent seats.

[0008] Optionally, the base includes a base plate, a sponge layer, a heat insulation layer, a heating layer, and a cushioning layer stacked sequentially from bottom to top. The heating layer is controlled by a control unit, and the mounting cavity extends vertically through the base plate, sponge layer, heat insulation layer, heating layer, and cushioning layer. In this case, the seat cushion also has a heating function, which helps to raise the seat temperature in cold environments and improve comfort.

[0009] Optionally, the ventilation fan is located at the bottom of the mounting cavity. Because the seat cushion is soft, it will compress and deform downwards when an occupant sits on it. A ventilation fan located at the bottom of the mounting cavity allows sufficient distance between the fan and the top opening of the cavity, preventing the occupant from pressing against the fan while seated.

[0010] Optionally, there are multiple ventilation fans, which are evenly distributed along the plane of the seat cushion to make the ventilation effect more uniform throughout the seat cushion.

[0011] Optionally, the control unit is mounted on the bottom front of the seat for easy manual control.

[0012] A fire truck employs a vehicle seat with ventilation function as described above. Because air is drawn in from the top of the seat cushion downwards, firefighters can hardly feel any strong airflow after sitting down, especially when they are sweating profusely after performing a mission, thus avoiding the risk of catching a cold due to direct airflow.

[0013] The advantages of the technical solution of this utility model compared with the prior art are as follows: After the ventilation fan is turned on, compared with the existing technology, the air at the top of the seat cushion changes from blowing out from bottom to top to being drawn in from top to bottom. After the passenger sits down, they can hardly feel the strong air flow, but the air circulation in the seat cushion can still be guaranteed. This ensures that the air in the seat cushion can circulate without blowing directly on the human body, thereby improving the comfort of riding, avoiding stuffiness in the buttocks, and avoiding the situation of the human body catching a cold due to direct air blowing. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A schematic diagram of the overall structure of a vehicle seat with ventilation function; Figure 2 A top view of the overall structure of a vehicle seat with ventilation function; Figure 3 This is a cross-sectional view of the seat cushion structure.

[0016] Icons: 1. Seat body; 2. Seat cushion; 21. Ventilation vent; 22. Base; 221. Base plate; 222. Sponge layer; 223. Heat insulation layer; 224. Heating layer; 225. Buffer layer; 23. Three-dimensional ventilation mesh; 24. Surface layer; 25. Mounting cavity; 31. Control unit; 32. Ventilation fan; 4. Backrest; 41. Receiving cavity; 42. Gas cylinder fixing device; 5. Three-point seat belt; 6. Airbag. Detailed Implementation

[0017] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] Example 1: This embodiment provides a vehicle seat with ventilation function, based on Figures 1 to 3 As shown, the system includes a seat body 1, which has a seat cushion 2 and an active ventilation system. The active ventilation system includes a control unit 31 and a ventilation fan 32. The ventilation fan 32 is disposed inside the seat cushion 2, and ventilation openings 21 are distributed on the top of the seat cushion 2. The ventilation openings 21 can be several openings distributed on the top surface of the seat cushion 2, or the top layer of the seat cushion 2 itself can be a woven structure with micropores that allow air to pass through. In other words, any structure that allows air to pass through can serve as the ventilation openings 21 in this embodiment. The ventilation fan 32 is controlled by the control unit 31, and its air inlet is connected to the ventilation openings 21, while its air outlet is connected to the outside of the seat body 1. The active ventilation system is powered by the vehicle's electrical system.

[0019] When an occupant is seated, part of the ventilation openings 21 at the top of the seat cushion 2 are blocked by the body, while the other part of the ventilation openings 21 are not blocked. For example Figure 3 As shown, the side vents 21 are not blocked by the human body, while the central vent 21 is blocked. After the ventilation fan 32 is activated, air from the top of the seat cushion 2 enters the interior of the seat cushion 2 through the unblocked vents 21. Since each vent 21 is connected to the air inlet of the ventilation fan 32, meaning each vent 21 is also interconnected, air passively flows through the blocked vents 21, ensuring airflow at the contact points between the occupant and the seat cushion 2. Because the air is not directly blown onto the human body by the ventilation fan 32, the occupant does not feel a strong airflow after sitting down, improving seating comfort, preventing stuffiness in the buttocks, and avoiding the possibility of catching a cold due to direct airflow. When the vehicle's air conditioning is turned on, the air passing through the vents 21 is cooler, further enhancing the effect of relieving stuffiness.

[0020] Specifically, in this embodiment, based on Figure 3 As shown, the cushion 2 has a base 22, a three-dimensional ventilation mesh 23, and a surface layer 24. The base 22 has a mounting cavity 25 with an opening at the top, and a ventilation fan 32 is fixedly installed inside the mounting cavity 25. The air inlet of the ventilation fan 32 faces upwards. The three-dimensional ventilation mesh 23 is located on top of the base 22, and the surface layer 24 is located on top of the three-dimensional ventilation mesh 23, with ventilation openings 21 located on the surface layer 24. The surface layer 24 is the surface of the cushion 2 that directly contacts the human body. The three-dimensional ventilation mesh 23 is a spatial mesh structure with a certain thickness, allowing air to flow through its pores. The surface layer 24 is supported by the three-dimensional ventilation mesh 23, creating a space between the base 22 and the surface layer 24 where air can circulate freely. After the ventilation fan 32 is activated, air from the top of the seat cushion 2 enters the three-dimensional ventilation mesh 23 at the bottom of the surface layer 24 through the ventilation openings 21 that are not blocked by the human body. This causes airflow within the three-dimensional ventilation mesh 23, and the air is then directed onto the human body through the ventilation openings 21 that are blocked by the human body, improving seating comfort. The design of the three-dimensional ventilation mesh 23 prevents the ventilation openings 21 on the surface layer 24 from being blocked by the pressure of the human body, ensuring that each ventilation opening 21 is connected to the airflow path driven by the ventilation fan 32.

[0021] Preferably, the mounting cavity 25 is vertically disposed through the base 22, and the air outlet of the ventilation fan 32 is oriented towards the bottom. The air blown by the ventilation fan 32 is discharged from the bottom of the base 22, and will not blow onto adjacent seats, thus not affecting passengers in adjacent seats. Of course, the outlet of the mounting cavity 25 can be located on the side of the base 22, and the air blown by the ventilation fan 32 will blow out from the side of the seat.

[0022] In this embodiment, the base 22 includes a substrate 221, a sponge layer 222, a heat insulation layer 223, a heating layer 224, and a buffer layer 225 stacked sequentially from bottom to top. The heating layer 224 is controlled by the control unit 31, and the mounting cavity 25 is vertically disposed through the substrate 221, the sponge layer 222, the heat insulation layer 223, the heating layer 224, and the buffer layer 225. The substrate 221 is a rigid plate, serving as the supporting base for the seat cushion 2. The sponge layer 222 provides sufficient softness to the seat cushion 2, enhancing comfort. The heating layer 224 contains electric heating wires, which can increase the temperature of the seat cushion 2 in low-temperature environments, improving riding comfort under low-temperature conditions. The heat insulation layer 223 can be made of materials with low thermal conductivity, such as polyurethane, silicone, or non-woven fabric, to reduce the heat transferred from the heating layer 224 to the bottom of the seat cushion 2, allowing more heat to be transferred to the surface layer 24, improving heat utilization. A temperature sensor is installed within the heating layer 224 for real-time temperature monitoring. The buffer layer 225 is a flexible pad disposed between the heating layer 224 and the three-dimensional ventilation mesh 23, used to protect the heating layer 224.

[0023] Preferably, the ventilation fan 32 is located at the bottom of the mounting cavity 25. Because the seat cushion 2 is soft, it will be compressed and deformed downwards when an occupant sits on it. The ventilation fan 32 located at the bottom of the mounting cavity 25 allows sufficient distance between the ventilation fan 32 and the top opening of the mounting cavity 25, preventing the occupant from pressing on the ventilation fan 32 while sitting.

[0024] In this embodiment, based on Figure 2 As shown, there are four sets of ventilation fans 32, which are evenly distributed along the plane of the seat cushion 2, making the ventilation effect more uniform throughout the seat cushion 2. Of course, the number of ventilation fans 32 can be set according to actual needs, depending on the size and structure of the seat, ventilation requirements, and the power of the ventilation fans 32.

[0025] Preferably, based on Figure 1 and Figure 3 As shown, the control unit 31 is installed on the bottom front side of the seat cushion 2. The control unit 31 may be equipped with a knob for controlling the speed of the ventilation fan 32, a switch for the ventilation fan 32, a knob for adjusting the heating wire speed, and a switch for the heating wire, allowing passengers to adjust the airflow or temperature according to their needs. The control unit 31, located on the bottom front side of the seat cushion 2, is easily accessible to passengers. Of course, the control unit 31 can also be placed in any easily accessible location inside the vehicle. In other embodiments, the control unit 31 can also be configured to automatically adjust the airflow of the ventilation fan 32 and the heating temperature of the heating layer 224 according to a preset program.

[0026] Example 2: A fire truck adopts the vehicle seat with ventilation function as described in Embodiment 1. Since the air at the top of the seat cushion 2 is drawn in from top to bottom, while ensuring air circulation in the seat cushion 2, firefighters can hardly feel the intense airflow after sitting down. This is especially beneficial when firefighters are sweating profusely after performing duties, as it avoids the situation of catching a cold due to direct airflow.

[0027] Among them, based on Figure 1 As shown, the main body of the seat also includes a backrest 4, which has a receiving cavity 41, and an air cylinder fixing device 42 is installed inside the receiving cavity 41. Since an air respirator is one of the essential firefighting equipment for firefighters, firefighters need to sit on the main body of the seat while carrying an air cylinder. When seated, the air cylinder on the back can be directly placed into the receiving cavity 41 and secured by the air cylinder fixing device 42.

[0028] At the same time, based on Figure 1 As shown, the seat body is equipped with a three-point seat belt 5, whose retractor integrates a multi-stage pretensioner and force limiter. In the event of a collision, the pretensioner instantly tightens the webbing, eliminating any slack between the seat and the protective suit. The ECU intelligently controls the force limiter's level based on the severity of the collision and the occupant's weight, limiting chest load. Subsequently, the force limiter, through a controllable motor rotation, reduces the chest impact load to a safe range. Simultaneously, due to the high center of gravity and speed of fire trucks turning at high speeds, this seat integrates an airbag 6 hidden within the side wings of the seat back 4 for more comprehensive protection of firefighters' lives. In a side collision, the airbag deploys rapidly to form a large-area buffer, effectively protecting the sides of the head and torso. By integrating a gas cylinder securing device 42, a three-point seat belt 5, and an airbag 6 within the seat body 1, the system not only meets the gas cylinder placement needs of firefighters but also constitutes a comprehensive collision protection system, ensuring the safety of firefighters.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vehicle seat with ventilation function, comprising a seat body having a seat cushion and an active ventilation system; the active ventilation system comprising a control unit and a ventilation fan, the ventilation fan being disposed inside the seat cushion, the top of the seat cushion having ventilation openings, and the ventilation fan being controlled by the control unit; Its features are: The air inlet of the ventilation fan is connected to the ventilation port, and the air outlet of the ventilation fan is connected to the outside of the seat body; The cushion has a base, a three-dimensional ventilation mesh, and a surface layer. The base has an installation cavity with an opening at the top. The ventilation fan is fixedly installed in the installation cavity with its air inlet facing upwards. The three-dimensional ventilation mesh is located on top of the base, the surface layer is located on top of the three-dimensional ventilation mesh, and the ventilation opening is located on the surface layer. The three-dimensional ventilation network is a spatial mesh structure, in which air can flow through the pores inside the three-dimensional ventilation network, and the surface is supported by the three-dimensional ventilation network.

2. The vehicle seat with ventilation function as described in claim 1, characterized in that: The mounting cavity is vertically connected to the base, and the air outlet of the ventilation fan faces the bottom.

3. The vehicle seat with ventilation function as described in claim 2, characterized in that: The base includes a substrate, a sponge layer, a heat insulation layer, a heating layer and a buffer layer stacked sequentially from bottom to top. The heating layer is controlled by the control unit. The mounting cavity is vertically disposed through the substrate, the sponge layer, the heat insulation layer, the heating layer and the buffer layer.

4. The vehicle seat with ventilation function as described in claim 3, characterized in that: The ventilation fan is located at the bottom of the mounting cavity.

5. The vehicle seat with ventilation function as described in any one of claims 1-4, characterized in that: The ventilation fan is multiple, and the multiple ventilation fans are evenly distributed along the plane of the seat cushion.

6. The vehicle seat with ventilation function as described in any one of claims 1-4, characterized in that: The control unit is installed on the bottom front side of the seat cushion.

7. A fire truck, characterized in that: The vehicle seat with ventilation function as described in any one of claims 1-6 is adopted.

Images