A child seat with air blowing and sucking temperature adjusting device and vehicle

Abstract

The present application belongs to the field of child safety seats, and solves the technical problem that the child seat in the prior art does not consider the physical condition of children and cannot provide stable and comfortable temperature regulation effect, and provides a child seat with a blowing and sucking air temperature regulation device and a vehicle. The child seat comprises a blowing and sucking air temperature regulation device, a seat body and a headrest, the seat body comprises a seat inner shell and a seat outer shell, the seat inner shell comprises a backrest and a seat cushion from top to bottom in sequence, and left and right side wings are arranged on both sides of the backrest and the seat cushion, a plurality of first ventilation openings arranged on the seat inner shell are communicated, and a plurality of second ventilation openings are arranged on the seat outer shell; the blowing and sucking air temperature regulation device comprises a plurality of blowing and sucking air temperature regulation units arranged on the seat body. The present application avoids the discomfort brought to young children by direct blowing, and still can effectively regulate the temperature of the child seat to provide a comfortable and stable riding environment for them.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of child safety seats, in particular to a child seat with a blowing and sucking air temperature adjusting device and a vehicle. BACKGROUND

[0002] A child safety seat is a seat designed for children of different ages, installed in a car, and can effectively improve the safety of children during car travel. During car travel, the cooling and heating functions of the child seat are crucial to improve the comfort and safety of children. In recent years, some child seats on the market have these functions. These seats usually rely on built-in fan systems to regulate air flow to achieve cooling or heating purposes.

[0003] In the prior art, the main working principle of the fan system of the child seat is to push air flow through the rotation of the fan to achieve the purpose of ventilation. In the cooling mode, the fan inhales external cold air and discharges it into the seat through the ventilation port of the seat to reduce the temperature of the part of the seat in contact with the child. In the heating mode, the fan inhales warmer air and pushes it into the seat to increase the temperature of the seat.

[0004] However, this design ignores the fact that children's thermoregulatory systems are not fully developed when they are young, making them more sensitive to environmental temperature. In this situation, directly blowing air on children can cause them to feel uncomfortable, especially when the wind is directly blown on them, which can cause children to have an adverse reaction, such as a cold or other related illnesses. SUMMARY

[0005] Therefore, the embodiments of the present application provide a child seat with a blowing and sucking air temperature adjusting device and a vehicle to solve the technical problem that the prior art does not consider the physical condition of children and cannot provide stable and comfortable temperature adjustment.

[0006] In a first aspect, the embodiments of the present application provide a child seat with a blowing and sucking air temperature adjusting device, which includes a blowing and sucking air temperature adjusting device, a seat body, and a headrest. The seat body includes a seat inner shell and a seat outer shell. The seat inner shell includes a backrest and a seat cushion from top to bottom, and left and right side wings are arranged on both sides of the backrest and the seat cushion. A plurality of first ventilation ports arranged on the seat inner shell are connected. A plurality of second ventilation ports are arranged on the seat outer shell.

[0007] The blowing and sucking air temperature adjusting device comprises a plurality of blowing and sucking air temperature adjusting units arranged on the seat body, the blowing and sucking air temperature adjusting unit comprises a fan and a refrigerating and heating unit, the refrigerating and heating unit is used for heating or refrigerating the airflow flowing through the refrigerating and heating unit, the fan comprises a bidirectional suction and exhaust fan, the bidirectional suction and exhaust fan has a suction working mode in a forward rotation mode and a blowing working mode in a reverse rotation mode, so that the blowing and sucking air temperature adjusting device has a suction mode, a heating blowing mode and a refrigerating blowing mode, when in the heating blowing mode or the refrigerating blowing mode, the fan transports the airflow from the second air vent to the first air vent, when in the suction mode, the fan transports the airflow from the first air vent to the second air vent.

[0008] Preferably, a plurality of cavities are arranged between the seat inner shell and the seat outer shell, the cavities are communicated with a plurality of first air vents arranged on the seat inner shell, the blowing and sucking air temperature adjusting unit further comprises a three-way joint, a first pipeline and a second pipeline, wherein the exhaust port of the fan is communicated with a second air vent arranged on the seat outer shell, the air outlet of the fan is connected with one end of the three-way joint, the other end of the three-way joint has an upper air outlet and a lower air outlet, the lower air outlet is connected with one end of the second pipeline, the other end of the second pipeline is connected with the cavity, the upper air outlet is connected with one end of the first pipeline, the other end of the first pipeline is connected with the second air vent, the refrigerating and heating unit is arranged on the inner wall of the three-way joint, and the first pipeline is provided with a movable blade, when the fan is in the blowing working mode, the movable blade is in an open state, and when the fan is in the suction working mode or the shutdown mode, the movable blade is in a closed state.

[0009] Preferably, the refrigerating and heating unit comprises a semiconductor refrigerating sheet;

[0010] When the refrigerating and heating device is in the heating blowing mode, the direction of the current flowing through the semiconductor refrigerating sheet is a first direction, so that the refrigerating end of the semiconductor refrigerating sheet corresponds to the upper air outlet, and the heating end corresponds to the lower air outlet, and the fan is in the blowing working mode;

[0011] When the refrigerating and heating device is in the refrigerating blowing mode, the direction of the current flowing through the semiconductor refrigerating sheet is a second direction, so that the refrigerating end of the semiconductor refrigerating sheet corresponds to the lower air outlet, and the heating end corresponds to the upper air outlet, and the fan is in the blowing working mode;

[0012] Wherein, the first direction and the second direction are opposite.

[0013] Preferably, the blowing and sucking air temperature adjusting device further comprises a temperature sensor arranged on the seat inner shell, used for acquiring the real-time temperature of the inside of the child seat;

[0014] when the real-time temperature is less than a first temperature threshold, controlling the fan to operate in the blowing mode and applying a first direction current on the semiconductor refrigeration sheet, so that the air flow cooled at the refrigeration end flows through the upper air outlet and the second air outlet to the outside of the child seat in sequence, and the air flow heated at the heating end flows through the lower air outlet, the second duct and the cavity to the inside of the child seat in sequence;

[0015] when the real-time temperature is greater than a second temperature threshold, controlling the fan to operate in the blowing mode and applying a second direction current on the semiconductor refrigeration sheet, so that the air flow heated at the heating end flows through the upper air outlet and the second air outlet to the outside of the child seat in sequence, and the air flow cooled at the refrigeration end flows through the lower air outlet, the second duct and the cavity to the inside of the child seat in sequence;

[0016] wherein the first temperature threshold is less than the second temperature threshold.

[0017] Preferably, the blowing and sucking temperature adjusting device further comprises a humidity sensor arranged in the seat inner shell, for acquiring the real-time humidity inside the child seat.

[0018] when the real-time temperature is between the first temperature threshold and the second temperature threshold and the real-time humidity is between a first humidity threshold and a second humidity threshold, controlling the fan to operate in the blowing mode and stopping applying current on the semiconductor refrigeration sheet, and the air flow flows from the fan to the upper air outlet and the second air outlet to the outside of the child seat in sequence, and flows through the lower air outlet, the second duct and the cavity to the first air outlet to the inside of the child seat to achieve air circulation;

[0019] when the real-time temperature is between the first temperature threshold and the second temperature threshold and the real-time humidity is greater than the second humidity threshold, controlling the fan to operate in the sucking mode and stopping applying current on the semiconductor refrigeration sheet, and the air flow enters from the first air outlet and flows through the cavity, the second duct, the lower air outlet, the first duct and the second air outlet to the outside of the child seat through the fan in sequence;

[0020] wherein the first humidity threshold is less than the second humidity threshold.

[0021] Preferably, the first air vents are arranged on the seat cushion, the backrest, the left wing and the right wing respectively, and the first air vents arranged on the left wing and the right wing are symmetrically arranged, and the seat inner shell further comprises a plurality of porous plates arranged outside the first air vents.

[0022] Preferably, the child seat further comprises a wind pressure detection device, the wind pressure detection device comprising a wind pressure value processing unit and a plurality of wind pressure detection units arranged at the first air vents of the seat cushion and the backrest, the wind pressure detection units being configured to obtain the wind pressure values of the corresponding first air vents, and the wind pressure value processing unit being connected with each of the wind pressure detection units and configured to obtain the sitting posture of the seated child according to the wind pressure values obtained by each of the wind pressure detection units.

[0023] If the difference between the wind pressure value obtained by the wind pressure detection unit arranged at the first air vent of the backrest and the first preset wind pressure threshold is less than or equal to the first preset difference, the sitting posture of the seated child is a reclining posture, and the power of the fans of all the blowing and sucking air units is set to the first preset power.

[0024] If the difference between the wind pressure value obtained by the wind pressure detection unit arranged at the first air vent of the backrest and the first preset wind pressure threshold is greater than the first preset difference, the wind pressure value obtained by the wind pressure detection unit arranged at the first air vent of the seat cushion is obtained.

[0025] If the difference between the wind pressure value obtained by the wind pressure detection unit arranged at the first air vent of the seat cushion and the second preset wind pressure threshold is greater than or equal to the second preset difference, the sitting posture of the seated child is a forward leaning posture, and the power of the fans of all the blowing and sucking air units is set to the second preset power, otherwise, the sitting posture of the seated child is a reclining posture, and the power of the fans of all the blowing and sucking air units is set to the first preset power.

[0026] Preferably, the first preset power is less than the second preset power.

[0027] Preferably, the blowing and sucking air temperature adjusting device comprises blowing and sucking air temperature adjusting units for blowing or sucking air at the first air vents arranged on the seat cushion, the backrest, the left wing and the right wing respectively, and the wind pressure detection device further comprises wind pressure detection units arranged at the first air vents of the seat cushion and the backrest respectively.

[0028] If the difference between the wind pressure value obtained by the wind pressure detection unit arranged at the first air vent of the backrest and the first preset wind pressure threshold is less than or equal to the first preset difference, the power of the fans of all the blowing and sucking air units is set to the first preset power, and the wind pressure values obtained by the wind pressure detection units arranged at the first air vents of the left wing and the right wing are obtained and recorded as the first left wind pressure value and the first right wind pressure value respectively.

[0029] when the difference between the first left side air pressure value and the first right side air pressure value is greater than or equal to a third preset difference value, a power adjustment value is obtained according to the difference between the first left side air pressure value and the first right side air pressure value and a preset power adjustment function, and the power of a fan of a blowing and sucking temperature adjustment unit that blows or sucks air to a first air vent provided in the left side wing and the right side wing is adjusted according to the power adjustment value;

[0030] wherein the preset power adjustment function is constructed based on a linear function or a nonlinear function.

[0031] Preferably, the preset power adjustment function is constructed based on a sigmoid function, and the preset power adjustment function is as follows:

[0032]

[0033] wherein a is a preset slope parameter, b is a preset center parameter, and ΔP is the difference between the first left side air pressure value and the first right side air pressure value.

[0034] The power adjustment value is calculated by the following formula:

[0035] P adjust =P max *(σ(ΔP)-0.5)*2;

[0036] wherein P adjust is the power adjustment value, P max is the maximum power of the fan, and σ(ΔP) is the preset power adjustment function.

[0037] In a second aspect, an embodiment of the present application provides a vehicle, which comprises the child seat with the blowing and sucking temperature adjustment device according to the first aspect.

[0038] In summary, the beneficial effects of the present application are as follows:

[0039] The child seat with the blowing and sucking air temperature adjusting device provided by the embodiment of the present application can quickly and effectively adjust the temperature according to the ambient temperature and the needs of the child, thereby providing higher comfort, the air is sucked away from the first air vent and discharged from the second air vent, thereby avoiding the discomfort possibly caused by directly blowing air to the child, and the seat can effectively keep dry and comfortable, the cooling and heating unit can not only provide appropriate ventilation function, but also provide the required cooling or heating effect for the child, the seat is adapted to various weather conditions, the design of the first air vent on the inner shell of the seat and the second air vent on the outer shell of the seat ensures the effective circulation of air between the inside and outside of the seat, which helps to provide better temperature and humidity control, the bidirectional air suction and discharge fan and the seat structure specially designed for children, including the backrest, the cushion and the wing, ensure that the air flow can be uniformly distributed in different modes, and the discomfort caused by uneven temperature is avoided.

[0040] In summary, the present application not only provides a comfortable sitting environment with adjustable temperature for children, but also effectively solves the temperature adjustment problem in the conventional child seat through the unique blowing and sucking air temperature adjusting device, thereby providing higher comfort and safety. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly introduced as follows, and other drawings can also be obtained by those skilled in the art without creative labor on the premise that these drawings are within the protection scope of the present application.

[0042] Figure 1 The structure schematic diagram of the child seat with the blowing and sucking air temperature adjusting device of the embodiment of the present application is shown in FIG. 1.

[0043] Figure 2 The structure schematic diagram of the child seat with the blowing and sucking air temperature adjusting device of the embodiment of the present application is shown in FIG. 1.

[0044] Figure 3 The structure schematic diagram of the child seat with the blowing and sucking air temperature adjusting device of the embodiment of the present application is shown in FIG. 1.

[0045] Figure 4 The structure schematic diagram of the blowing and sucking air temperature adjusting unit of the embodiment of the present application is shown in FIG. 4.

[0046] Figure 5 The structure schematic diagram of the blowing and sucking air temperature adjusting unit of the embodiment of the present application is shown in FIG. 4.

[0047] Figure 6a The air suction flow direction schematic diagram of the blowing and sucking air temperature adjusting unit of the embodiment of the present application is shown in FIG. 5.

[0048] Figure 6b Fig. 1 is a schematic diagram of the air suction flow direction of the air blowing and sucking temperature adjusting unit according to an embodiment of the present application;

[0049] Figure 7 Fig. 2 is a flowchart of adjusting the fan power through the child sitting posture according to an embodiment of the present application.

[0050] Parts and components in the figure:

[0051] 1, seat body; 2, headrest; 3, air blowing and sucking temperature adjusting unit; 4, seat cushion;

[0052] 11, seat inner shell; 12, seat outer shell; 13, cavity; 31, three-way interface;

[0053] 111, first air vent; 121, second air vent; 311, first pipeline; 312, second pipeline; 313, semiconductor refrigerating sheet; 314, movable blade. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. It should be noted that, in this text, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or sequence between the entities or operations. In the description of the present application, it should be understood that the orientations or position relationships indicated by the terms “center”, “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer” and the like are based on the orientations or position relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. Moreover, the terms “include”, “contain” or any other variants thereof are intended to cover non-exclusive inclusion, so that the processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed or inherent to such processes, methods, articles or devices. Without more limitations, the elements defined by the statement “include” do not exclude the presence of other identical elements in the processes, methods, articles or devices including the elements. If not conflicting, various features in the embodiments and examples of the present application can be combined with each other, and are all within the protection scope of the present application.

[0055] Please refer to Figures 1-5The embodiment of the present application provides a child seat with a blowing and sucking air temperature adjusting device, which comprises the blowing and sucking air temperature adjusting device, a seat body 1 and a headrest 2. The seat body comprises a seat inner shell 11 and a seat outer shell 12. The seat inner shell 11 comprises a backrest, a cushion and left and right side wings arranged on both sides of the backrest and the cushion from top to bottom. A plurality of first air vents 111 are arranged on the seat inner shell 11, and a plurality of second air vents 121 are arranged on the seat outer shell.

[0056] The blowing and sucking air temperature adjusting device comprises a plurality of blowing and sucking air temperature adjusting units arranged on the seat body. Each unit comprises a fan 3 and a refrigerating and heating unit. The refrigerating and heating unit is used for heating or cooling the airflow passing through the refrigerating and heating unit. The fan 3 comprises a bidirectional suction and exhaust fan which has a sucking working mode in a forward rotation mode and a blowing working mode in a reverse rotation mode, so that the blowing and sucking air temperature adjusting device has a sucking mode, a heating blowing mode and a cooling blowing mode. When in the heating blowing mode or the cooling blowing mode, the fan transports the airflow from the second air vent to the first air vent. When in the sucking mode, the fan transports the airflow from the first air vent to the second air vent.

[0057] The embodiment of the present application provides a unique child seat, which is characterized in that the core is provided with a blowing and sucking air temperature adjusting device. The child seat comprises main components: a seat body 1, a headrest 2 and a blowing and sucking air temperature adjusting device. The seat body is composed of a seat inner shell 11 and an outer shell 12. The seat inner shell 11 not only provides a basic cushion and backrest, but also has left and right wings on both sides to increase the safety of children. In order to realize the temperature adjusting function, a plurality of first air vents 111 are arranged on the seat inner shell 11, and a plurality of second air vents 121 are arranged on the outer shell 12. The design of these air vents is to enable air to flow between the inside and outside of the seat;

[0058] In order to realize the temperature adjusting function, a plurality of first air vents 111 are arranged on the seat inner shell 11, and a plurality of second air vents 121 are arranged on the outer shell 12. The design of these air vents is to enable air to flow between the inside and outside of the seat.

[0059] The core blowing and sucking air temperature adjusting device comprises a plurality of blowing and sucking air temperature adjusting units, each unit comprising a fan 3 and a refrigerating and heating unit. The task of the refrigerating and heating unit is to adjust the temperature of the passing airflow to make it rise or fall. The bidirectional suction and exhaust fan in the fan 3 is responsible for controlling the direction of the airflow.

[0060] By way of example and not limitation, in winter, children have relatively poor thermoregulation, especially for young infants. If they sit in the seat for a long time, their back and buttocks are prone to sweating due to the insulation between the body heat and the clothes. The humid environment not only makes the children feel uncomfortable, but also can cause skin rash or other skin problems.

[0061] In this case, if the heating or cooling blowing mode is used, it can cause excessive dryness to the child's skin, or make the humid clothes continuously irritate the child's skin. For particularly young infants, their skin is relatively delicate and more vulnerable, and long-time direct blowing can also cause respiratory discomfort to the infants.

[0062] Therefore, in order to avoid these problems, the suction mode can be selected. In this mode, the fan 3 will suck the hot and humid air caused by the child's body temperature and clothes from the first air vent 111 of the seat inner shell 11, and then discharge it from the second air vent 121 of the seat outer shell 12. In this way, the humidity inside the seat can be effectively reduced, thereby providing a dry and comfortable sitting environment for the child, while avoiding the adverse effects that direct blowing to the child's skin can cause.

[0063] In an embodiment, the seat inner shell and the seat outer shell comprise a plurality of cavities 3, which are in communication with a plurality of first air vents 111 provided on the seat inner shell 11, and the blowing and suction temperature adjustment unit further comprises a three-way interface 31, a first duct 311 and a second duct 312, wherein the exhaust port of the fan is in communication with the second air vent 121 provided on the seat outer shell, the air outlet of the fan is connected to one end of the three-way interface 31, the other end of the three-way interface 31 has an upper air outlet and a lower air outlet, the lower air outlet is connected to one end of the second duct 311, the other end of the second duct 312 is connected to the cavity, the upper air outlet is connected to one end of the first duct, the other end of the first duct is connected to the second air vent, the refrigeration and heating unit 313 is provided on the inner wall of the three-way interface, and the first duct is provided with a movable blade. When the fan is in the blowing mode, the movable blade is in the open state, and when the fan is in the suction mode or the stop mode, the movable blade is in the closed state.

[0064] In this embodiment, the cavity structure between the seat inner shell and the seat outer shell is added, and the three-way interface, the first duct and the second duct, and the refrigeration and heating unit are added. The working principle is as follows:

[0065] The cavity is connected with the fan, and the cavity 3 is a region between the inner and outer shells of the seat and is communicated with the first air vent 111 arranged on the inner shell of the seat, so that the air sucked or blown from the surroundings of the child's body can be more evenly distributed. The air outlet of the fan is directly connected with the three-way interface 31, and the three-way interface 31 has upper and lower air outlets. The refrigeration and heating unit 313 is arranged on the inner wall of the three-way interface, so that the airflow entering the three-way interface can be quickly heated or cooled. When the fan is in the blowing mode, the airflow enters the cavity from the lower air outlet of the three-way interface through the second pipeline 312, and then is blown to the child from the first air vent 111. At the same time, the airflow of the upper air outlet is directly blown out of the seat through the first pipeline. When the fan is in the air suction mode, the airflow enters the cavity from the first air vent 111 around the child's body, then enters the three-way interface 31 through the second pipeline 312, and finally is discharged by the fan. The movable blade is arranged in the first pipeline and is used for controlling the direction of the airflow. When the fan is in the blowing mode, the blade is opened to allow the airflow to pass through; when the fan is in the air suction mode or is stopped, the blade is closed to prevent the airflow.

[0066] Specifically, the fan includes a bidirectional air suction and blowing fan, which has a positive rotation air suction mode and a reverse rotation air blowing mode. In the air suction mode, the fan works in the positive rotation mode. At this time, referring to Figure 6a , the fan sucks air from the inside of the seat through the first air vent. In this process, the air enters the cavity through the first air vent and flows to the lower air outlet of the three-way interface through the second pipeline, and is finally discharged from the second air outlet of the three-way interface, so as to realize the circulation of the air. In this process, the movable blade is in the closed state.

[0067] In the heating blowing mode, the fan works in the reverse rotation mode. Referring to Figure 6b , air is sucked from the second air vent outside the seat, passes through the refrigeration and heating unit of the three-way interface and the second pipeline. At this time, the refrigeration and heating unit works in the heating mode to heat the passing air. The heated air enters the cavity through the upper and lower air outlets of the first pipeline, and then is transported to the inside and outside of the seat through the first and second air vents, so as to provide warmth for the child.

[0068] The working principle of the refrigeration blowing mode is similar to that of the heating blowing mode, and the difference lies in that the refrigeration and heating unit works in the refrigeration mode to cool the passing air. The cooled air is also transported to the inside and outside of the seat through the cavity, so as to provide a cool riding environment for the child.

[0069] Through the design of the cavities, distributed ventilation is realized, even if a part is locally blocked, other parts can still work normally, the overall ventilation effect is maintained, thereby ensuring the efficiency of refrigeration and heating, the cavities are arranged, air circulation of each part of the seat can be realized, heat in the seat is uniformly distributed, more uniform refrigeration and heating effects are realized, and the comfort of riding is improved.

[0070] As an optional embodiment of the application, the refrigeration and heating unit comprises a semiconductor refrigeration sheet;

[0071] When the refrigeration and heating device is in the heating and blowing mode, the direction of the current flowing through the semiconductor refrigeration sheet is a first direction, so that the refrigeration end of the semiconductor refrigeration sheet corresponds to the upper air outlet, and the heating end corresponds to the lower air outlet, and the fan is in the blowing working mode;

[0072] When the refrigeration and heating device is in the refrigeration and blowing mode, the direction of the current flowing through the semiconductor refrigeration sheet is a second direction, so that the refrigeration end of the semiconductor refrigeration sheet corresponds to the lower air outlet, and the heating end corresponds to the upper air outlet, and the fan is in the blowing working mode;

[0073] The first direction and the second direction are opposite.

[0074] In the embodiment, the refrigeration and heating unit comprises a semiconductor refrigeration sheet, the semiconductor refrigeration sheet is based on the Peltier effect, and the refrigeration end and the heating end can be switched by changing the direction of the current flowing through the semiconductor refrigeration sheet. When the current flows, one end absorbs heat and becomes cold, and the other end discharges heat and becomes hot;

[0075] Specifically, in the heating and blowing mode, the direction of the current is a first direction, the refrigeration end of the semiconductor refrigeration sheet corresponds to the upper air outlet, and the heating end corresponds to the lower air outlet. The fan is in the blowing working mode, and hot air generated by the heating end is transported into the seat;

[0076] In the refrigeration and blowing mode, the direction of the current is a second direction, which is opposite to the first direction, the refrigeration end of the semiconductor refrigeration sheet corresponds to the lower air outlet, and the heating end corresponds to the upper air outlet. The fan is in the blowing working mode, and cold air generated by the refrigeration end is transported into the seat;

[0077] In an embodiment, the semiconductor refrigeration sheet is further provided with fins on both sides, the fins are arranged on both sides of the semiconductor refrigeration sheet, and are used for assisting the refrigeration end and the heating end of the semiconductor refrigeration sheet to exchange heat, thereby improving the efficiency of refrigeration and heating;

[0078] By changing the current direction flowing through the semiconductor refrigeration sheet, the flexible switching of the refrigeration and heating modes is realized, meeting the demand for temperature adjustment of the child seat in different environments and seasons. The addition of the heat dissipation fin makes the heat exchange of the semiconductor refrigeration sheet more efficient, improves the efficiency of refrigeration and heating, and enables the child seat to reach the set temperature more quickly, thereby improving the use experience. The semiconductor refrigeration technology does not require the use of refrigerant, is environmentally friendly and safe, and reduces the potential risk to the health of children. The operation of the semiconductor refrigeration sheet is more energy-saving than that of traditional refrigeration and heating equipment, meets the environmental protection demand, and reduces energy consumption.

[0079] As an optional embodiment of the present application, the air blowing and sucking temperature adjusting device further comprises a temperature sensor arranged in the seat inner shell, for obtaining the real-time temperature of the inside of the child seat.

[0080] When the real-time temperature is less than a first temperature threshold, the fan is controlled to operate in the air blowing mode and the semiconductor refrigeration sheet is applied with a current in a first direction, so that the air flow cooled at the refrigeration end flows through the upper air outlet and the second air outlet in turn and is discharged to the outside of the child seat, and the air flow heated at the heating end flows through the lower air outlet, the second pipeline and the cavity in turn and is discharged to the inside of the child seat through the first air outlet.

[0081] When the real-time temperature is greater than a second temperature threshold, the fan is controlled to operate in the air blowing mode and the semiconductor refrigeration sheet is applied with a current in a second direction, so that the air flow heated at the heating end flows through the upper air outlet and the second air outlet in turn and is discharged to the outside of the child seat, and the air flow cooled at the refrigeration end flows through the lower air outlet, the second pipeline and the cavity in turn and is discharged to the inside of the child seat through the first air outlet.

[0082] Wherein, the first temperature threshold is less than the second temperature threshold.

[0083] In this embodiment, by arranging a temperature sensor in the seat inner shell and controlling the working mode of the fan and the current direction of the semiconductor refrigeration sheet according to the detected real-time temperature, intelligent refrigeration and heating of the child seat is realized. The first temperature threshold is the temperature at which the heating mode is started. For example, if the comfortable temperature of children in a cold environment is 20℃, the first temperature threshold can be set to 18℃ or 19℃, so that when the temperature of the seat is lower than this threshold, the heating mode is automatically started. The second temperature threshold is the temperature at which the refrigeration mode is started. For example, if the comfortable temperature of children in a hot environment is 28℃, the second temperature threshold can be set to 30℃ or 31℃, so that when the temperature of the seat is higher than this threshold, the refrigeration mode is automatically started. The specific setting of the threshold should be adjusted according to the actual user demand and test results to ensure the best comfortable experience.

[0084] Specifically, the temperature sensor is located in the seat inner shell, which can obtain the real-time temperature of the seat inner side. When the real-time temperature is less than the first temperature threshold, the system will switch to the heating mode. In this mode, the fan operates in the blowing mode, the semiconductor refrigeration piece applies a current in the first direction, the airflow of the refrigeration end is cooled and flows through the upper air outlet to the seat outer side, while the airflow of the heating end is heated and flows through the lower air outlet, the second pipeline and the cavity, and finally flows from the first ventilation port to the seat inner side, so as to achieve the effect of heating the seat.

[0085] When the real-time temperature is greater than the second temperature threshold, the system will switch to the cooling mode. In this mode, the fan also operates in the blowing mode, but the semiconductor refrigeration piece applies a current in the second direction, the airflow of the heating end flows through the upper air outlet to the seat outer side, while the airflow of the refrigeration end is cooled and flows through the lower air outlet, the second pipeline and the cavity, and finally flows from the first ventilation port to the seat inner side, so as to achieve the effect of cooling the seat.

[0086] In a specific embodiment, the temperature sensor can be arranged in the middle of the backrest, close to the position of the child's back, which can accurately sense the body temperature of the user, so as to adjust the temperature of the seat; or the temperature sensor can be arranged in the middle of the cushion; or the edge of the seat: a sensor is arranged at the edge of the seat, which can sense the ambient temperature, which is helpful to adjust the temperature of the seat; the installation position of the temperature sensor can be adjusted according to the actual situation and design requirements, and even multiple sensors can be arranged to more comprehensively sense the temperature.

[0087] As an optional embodiment of the application, the blowing and sucking air temperature adjusting device further comprises a humidity sensor arranged in the seat inner shell, which is used to obtain the real-time humidity of the child seat inner side.

[0088] When the real-time temperature is between the first temperature threshold and the second temperature threshold and the real-time humidity is between the first humidity threshold and the second humidity threshold, the fan is controlled to operate in the blowing mode and the current applied on the semiconductor refrigeration piece is stopped, the airflow flows from the fan to the upper air outlet and the second ventilation port to the child seat outer side in sequence, and flows through the lower air outlet, the second pipeline and the cavity and from the first ventilation port to the child seat inner side to realize air circulation.

[0089] When the real-time temperature is between the first temperature threshold and the second temperature threshold and the real-time humidity is greater than the second humidity threshold, the fan is controlled to operate in the sucking mode and the current applied on the semiconductor refrigeration piece is stopped, the airflow enters from the first ventilation port and flows through the cavity, the second pipeline, the lower air outlet, the first pipeline and the second ventilation port of the fan to the outer side of the child seat.

[0090] wherein the first humidity threshold is less than the second humidity threshold.

[0091] In this embodiment, the air blowing and sucking temperature adjustment device increases a humidity sensor, which is used to obtain the real-time humidity inside the child seat, so that the working mode of the seat can be adjusted according to the real-time data of temperature and humidity, ensuring the comfort of the child;

[0092] Specifically, the humidity sensor should be placed in a position that can accurately reflect the comfort of the child. Generally, the humidity sensor can be installed near the seat cushion or the backrest position of the seat, because these areas are in direct contact with the child's body and can accurately detect the humidity inside the seat.

[0093] The setting of the first humidity threshold and the second humidity threshold needs to consider the comfort range of the human body and the working performance of the seat. Generally speaking, the relative humidity between 40%-60% is considered comfortable for the human body, so the first humidity threshold can be set at the lower limit of this range, and the second humidity threshold can be set at the upper limit, such as the first humidity threshold is 40%, and the second humidity threshold is 60%;

[0094] However, these values are not fixed and should be adjusted according to the actual application environment, individual differences of users and actual performance of the seat. It may be necessary to optimize through experiments and user feedback to ensure that the set threshold can bring the best comfortable experience;

[0095] In addition, the setting of the humidity threshold should also consider the differences in different geographical environments, seasons and weather conditions, and it may be necessary to provide certain adjustment range or preset different modes to adapt to different use conditions;

[0096] When the real-time temperature is between the first temperature threshold and the second temperature threshold, and the real-time humidity is between the first humidity threshold and the second humidity threshold, the fan is adjusted to the blowing mode, and the current applied to the semiconductor refrigeration sheet is stopped, so that the fan blows fresh air into the seat while expelling the air inside the seat, forming an air circulation, which helps to maintain the air quality and comfort inside the seat;

[0097] When the real-time temperature is still between the first temperature threshold and the second temperature threshold, but the real-time humidity exceeds the second humidity threshold, the system will switch to the sucking mode. In this mode, the fan sucks out the air with higher humidity inside the seat, thereby reducing the humidity inside the seat and improving the comfort of the child;

[0098] By monitoring temperature and humidity simultaneously, the seat can provide more suitable comfort under different environmental conditions and is more adaptable; by automatically adjusting the working mode, the temperature and humidity in the seat can be effectively adjusted, ensuring that the child remains comfortable even in an environment with changing temperature and humidity, and the child seat can automatically adjust the working mode according to real-time environmental parameters without manual intervention, making the operation more intelligent, convenient for users to use, and only when temperature or humidity needs to be adjusted will the system work, and at other times it can only circulate air, which can effectively save energy and be more environmentally friendly.

[0099] In summary, this embodiment successfully improves the adaptability and comfort of the seat by adding a humidity sensor in the seat and intelligently adjusting the working mode according to real-time data of humidity and temperature, while achieving a more environmentally friendly operation mode.

[0100] As an optional embodiment of the present application, the first air vents are respectively arranged in the seat cushion, the backrest, the left side wing, and the right side wing, and the first air vents arranged in the left side wing and the first air vents arranged in the right side wing are symmetrically arranged.

[0101] Specifically, the first air vents are distributed in various parts of the child seat, including the seat cushion, the backrest, the left side wing, and the right side wing. This distribution ensures that air can circulate in all parts of the seat, providing more uniform and comprehensive cooling or heating effect. At the same time, the air vents on the left and right side wings are symmetrically arranged, which helps to maintain the balance of air flow on both sides of the seat and avoid overheating or overcooling on one side.

[0102] The working principle is as follows:

[0103] When the fan is working, air can enter the seat cushion, backrest, and both side wings through the first air vents, which helps to achieve air exchange between the inside and outside of the seat, ensuring that the temperature and humidity of the seat cushion, backrest, and both side wings can be effectively controlled. The symmetric arrangement of the air vents on the left and right side wings helps to maintain uniform air flow and temperature distribution on both sides of the seat. In this way, the child can enjoy a consistent comfortable experience regardless of how the child moves or changes posture;

[0104] Further, the left side wing and the right side wing each include four first ventilation openings arranged in order from top to bottom, the headrest, the backrest and the seat cushion each include a first ventilation opening, and the cavities below the first ventilation openings are interconnected. Since the cavities below the first ventilation openings are interconnected, a high-power fan can provide uniform air flow distribution to each ventilation opening, ensuring that each area receives appropriate air flow. Therefore, the air blowing and sucking temperature adjusting device can only include a fan with a first preset rated power. A high-power fan means that the system is simpler to design, manufacture and maintain, with fewer excess wires, controllers and connection parts, thereby reducing manufacturing and maintenance costs. In another embodiment, the air blowing and sucking temperature adjusting unit includes a plurality of fans with a second preset rated power, which is less than the first preset rated power. Each fan can be independently controlled, which means that different wind speeds or temperatures can be provided for different parts of the seat. For example, if stronger cooling is required in the seat cushion part and warmth is required in the backrest part, the fans can be adjusted independently.

[0105] As an optional embodiment of the present application, the seat inner shell further includes a porous plate arranged outside each first ventilation hole.

[0106] In this embodiment, each first ventilation opening is equipped with a porous plate. Such a design can further optimize air circulation and temperature distribution, improve the use experience and efficiency of the seat. The presence of the porous plate can effectively disperse the air flow through the first ventilation opening, allowing the air to enter the seat interior in a more detailed and uniform manner. This helps to prevent the air flow from directly impacting the child's body, providing a more comfortable and natural experience. Since the surface area of the porous plate is larger than that of a single ventilation opening, it can provide more air exchange area, thereby improving the efficiency of air circulation and accelerating the speed of refrigeration and heating.

[0107] As an optional embodiment of the present application, the material of the semiconductor refrigeration sheet includes one or more of bismuth telluride, bismuth antimony compound, bismuth gallium compound, bismuth sulfide and silicon germanium compound.

[0108] In this embodiment, the material of the semiconductor refrigeration sheet is composed of one or more of bismuth telluride, bismuth antimony compound, bismuth gallium compound, bismuth sulfide and silicon germanium compound. These materials are thermoelectric materials commonly used to manufacture thermocouples and refrigeration sheets, and have good thermoelectric properties. The working principle of these semiconductor materials is based on the thermoelectric effect (Seebeck effect). When an electric current passes through these materials, one end will absorb heat (the refrigeration end), and the other end will release heat (the heating end), thereby achieving the effects of refrigeration and heating. By changing the direction of the electric current flowing through the semiconductor refrigeration sheet, the refrigeration end and the heating end can be switched, achieving the refrigeration and heating functions of the seat.

[0109] The aforementioned materials have high thermoelectric conversion efficiency, enabling them to achieve significant temperature differences in a short time, thereby quickly providing cooling or heating for the seat. Since cooling and heating can be switched by changing the direction of the current, these semiconductor materials offer high operational flexibility, allowing the seat temperature to be adjusted quickly as needed.

[0110] As an optional embodiment of the present invention, the headrest is slidably connected to the seat body;

[0111] The headrest is slidably connected to the seat body, allowing for height adjustment. This adjustable headrest height means the seat can accommodate children of different heights, from toddlers to older children, increasing its suitability for a wider range of users. Users can adjust the headrest height according to their individual comfort and needs, making the child more comfortable, especially during long journeys. A properly positioned headrest better protects the child's head and neck, particularly during travel, helping to reduce injuries caused by bumps and sudden braking.

[0112] As an optional embodiment of the present invention, the child seat further includes a wind pressure detection device, which includes a wind pressure value processing unit and a plurality of wind pressure detection units disposed at the first ventilation openings of the seat cushion and the backrest. The wind pressure detection units are used to obtain the wind pressure value of the corresponding first ventilation opening. The wind pressure value processing unit is connected to each of the wind pressure detection units and is used to obtain the sitting posture of the child based on the wind pressure value obtained by each of the wind pressure detection units.

[0113] If the difference between the wind pressure value obtained by the wind pressure detection unit at the first ventilation opening on the backrest and the first preset wind pressure threshold is less than or equal to the first preset difference, the child sitting in the seat is in a reclining posture, and the power of the fan of all the blowing and suction units is set to the first preset power.

[0114] If the difference between the wind pressure value obtained by the wind pressure detection unit at the first ventilation opening on the backrest and the first preset wind pressure threshold is greater than the first preset difference, the wind pressure value obtained by the wind pressure detection unit at the first ventilation opening on the seat cushion is obtained.

[0115] If the difference between the wind pressure value obtained by the wind pressure detection unit at the first ventilation opening of the seat cushion and the second preset wind pressure threshold is greater than or equal to the second preset difference, the child sitting in the seat is in a forward-leaning posture, and the power of the fans of all the blowing and suction units is set to the second preset power; otherwise, the child sitting in the seat is in a backward-leaning posture, and the power of the fans of all the blowing and suction units is set to the first preset power.

[0116] Wherein, the first preset power is less than the second preset power.

[0117] Specifically, the embodiment adds a wind pressure detection device to the child seat. The device detects the wind pressure values of the first air vents on the seat to determine the sitting posture of the child and adjusts the power of the air blower accordingly. The change in wind pressure may be caused by the child's sitting posture on the seat. For example, when the child leans back, the wind pressure of the air vents in the backrest part will increase, and when the child leans forward, the wind pressure of the air vents in the seat cushion part will increase.

[0118] As shown in Figure 7 The child seat obtains the sitting posture of the seated child and adjusts the power of the air blower of the air blowing and sucking unit according to the wind pressure values obtained by each wind pressure detection unit as follows:

[0119] S1, real-time acquisition of wind pressure values of first air vents on the backrest and seat cushion;

[0120] Specifically, first, the wind pressure values of the first air vents on the backrest and seat cushion are obtained. The backrest and seat cushion are the parts of the child seat that mainly contact the child's body. Therefore, changes in wind pressure values on the backrest and seat cushion can directly reflect changes in the child's sitting posture. For example, when the child leans back, the wind pressure on the backrest will increase, and when the child leans forward, the wind pressure on the seat cushion will increase.

[0121] S2, if the difference between the wind pressure value obtained by the wind pressure detection unit arranged at the first air vent of the backrest and the first preset wind pressure threshold is less than or equal to the first preset difference, the sitting posture of the seated child is a leaning-back sitting posture, and the power of the air blower of all the air blowing and sucking units is set to the first preset power;

[0122] When the child adopts a leaning-back sitting posture, his back will more closely compress the backrest, resulting in an increase in wind pressure on the backrest. This is because the child's back hinders the flow of air, causing the airflow in the backrest to be blocked, resulting in an increase in wind pressure. In order to simplify the system and improve the response speed, a preset wind pressure threshold is set to determine the child's sitting posture. The first preset wind pressure threshold is determined through experiments and statistics. When the wind pressure on the backrest approaches or exceeds this threshold, it can be considered that the child is in a leaning-back sitting posture.

[0123] First, judging the wind pressure value of the backrest can quickly determine whether the child is in a leaning-back sitting posture. If the wind pressure value of the backrest determines that it is a leaning-back sitting posture, the corresponding adjustment can be quickly made without further detecting the wind pressure value on the seat cushion. This can simplify the control logic and improve the response speed of the system.

[0124] And, by setting the first preset difference value, the system can provide a stable response. If only relying on an accurate wind pressure threshold, the system will immediately switch states if the child slightly adjusts the sitting posture or causes slight changes in the wind pressure value due to some small movements. By setting a preset difference value, the system can ensure that it only switches states when necessary, thereby reducing unnecessary interference and power consumption.

[0125] S3, if the difference between the wind pressure value obtained by the wind pressure detection unit arranged at the first air vent of the backrest and the first preset wind pressure threshold is greater than the first preset difference value, the wind pressure value obtained by the wind pressure detection unit arranged at the first air vent of the seat cushion is obtained;

[0126] If the child is not in a reclined sitting posture, further determine whether it is in a forward leaning sitting posture. This is done by obtaining the wind pressure value on the seat cushion;

[0127] S4, if the difference between the wind pressure value obtained by the wind pressure detection unit arranged at the first air vent of the seat cushion and the second preset wind pressure threshold is greater than or equal to the second preset difference value, the sitting posture of the seated child is a forward leaning sitting posture, and the power of the fan of all the blowing and sucking wind units is set to the second preset power;

[0128] If the difference between the wind pressure value on the seat cushion and the second preset wind pressure threshold is large, it is considered that the child is in a forward leaning sitting posture, and the fan power is set to the second preset power. To ensure sufficient air volume when leaning forward, the second preset power is higher than the first preset power. The second preset wind pressure threshold is determined through experiments and statistics. When the wind pressure on the backrest approaches or exceeds this threshold, it can be considered that the child is in a forward leaning sitting posture.

[0129] S5, otherwise, the sitting posture of the seated child is a reclined sitting posture, and the power of the fan of all the blowing and sucking wind units is set to the first preset power;

[0130] Wherein, the first preset power is less than the second preset power;

[0131] If none of the above conditions are met, it is assumed that the child is in a reclined sitting posture, and the fan power is set to the first preset power.

[0132] In summary, the scheme uses the wind pressure detection device to intelligently adjust the fan power, improves the use comfort and safety of the child seat, and has the effect of energy saving. The wind pressure value is obtained in real time to ensure that the seat can respond to the sitting posture change of the child in time, so as to adjust the power of the fan in real time, improve the comfort of the child, and automatically and intelligently judge the sitting posture of the child through wind pressure detection, and adjust the power of the fan accordingly. According to the sitting posture of the child, adjusting the power of the fan can provide a more comfortable experience for the child, for example, increasing the air volume when leaning forward to better cool the child; the fan power can be adjusted according to the actual needs, which saves energy and ensures the safety and comfort of the child.

[0133] As an optional embodiment of the present application, the blowing and sucking air temperature adjusting device comprises blowing and sucking air temperature adjusting units for blowing or sucking air to the first air vents arranged on the seat cushion, the backrest, the left side wing and the right side wing respectively, and the wind pressure detection device further comprises wind pressure detection units arranged on the first air vents of the seat cushion and the backrest respectively;

[0134] If the difference between the wind pressure value obtained by the wind pressure detection unit arranged on the first air vent of the backrest and the first preset wind pressure threshold is less than or equal to the first preset difference, the power of the fan of all the blowing and sucking air units is set to the first preset power, and the wind pressure values obtained by the wind pressure detection units arranged on the first air vents of the left side wing and the right side wing are respectively recorded as the first left side wind pressure value and the first right side wind pressure value;

[0135] When the difference between the first left side wind pressure value and the first right side wind pressure value is greater than or equal to the third preset difference, a power adjustment value is obtained according to the difference between the first left side wind pressure value and the first right side wind pressure value and a preset power adjustment function, and the power of the fan of the blowing and sucking air temperature adjusting unit for blowing or sucking air to the first air vents arranged on the left side wing and the right side wing is adjusted according to the power adjustment value;

[0136] The preset power adjustment function is constructed based on a linear function or a nonlinear function.

[0137] In this embodiment, the seat cushion, backrest, left wing and right wing of the child seat are considered, and the comprehensive design ensures that the child can be properly ventilated whether leaning back, leaning forward or leaning sideways. The backrest wind pressure detection unit is used to determine the basic sitting posture of the child first. If the wind pressure difference is less than or equal to the first preset difference, it is considered that the child is in a backward leaning posture, and the fan power is adjusted to the first preset power accordingly. After determining the backward leaning posture, the system further checks the wind pressure values of the left wing and the right wing. This is to detect whether the child has a tendency to lean sideways. When the wind pressure values of the left and right sides are significantly different, it means that the child may be leaning to one side. At this time, the system will determine how to adjust the fan power of the left and right wings according to the preset power adjustment function, so as to provide more suitable ventilation for the child according to his or her sitting posture, so that the child feels that the air volume on the left and right sides is close to the same, and has a better temperature regulation experience; this function can be linear or nonlinear. Its purpose is to determine how to adjust the fan power according to the difference between the left and right wind pressure values. For example, the larger the difference, the greater the adjustment power may be to ensure that the child gets proper ventilation.

[0138] In an embodiment, the preset power adjustment function is constructed based on a linear function, and the preset power adjustment function constructed based on the linear function is as follows:

[0139] Power adjust = k x ΔP

[0140] In the formula, Power adjust is the power value adjusted according to the wind pressure difference, k is a constant that determines the speed of adjustment. Based on the above formula, when it is determined that the child's sitting posture is leaning to the right, the power adjustment of the left and right sides can be defined as:

[0141] Power left = Power preset + Power adjust

[0142] Power right = Power preset - Power adjust

[0143] In the formula, Power left is the power of the fan of the left wing, Power preset is the first preset power, and Power right is the power of the fan of the right wing.

[0144] The relationship of the linear function is direct and explicit. When the wind pressure difference value increases (or decreases), the adjusted power also increases (or decreases) linearly. This direct relationship makes the system response to input changes easy to predict. Once the wind pressure difference value is detected, the fan power can be immediately adjusted to quickly approach or reach the desired wind pressure value;

[0145] Specifically, when the child leans left, the wind pressure detection unit on the left wing will detect a higher wind pressure value (due to body obstruction), while the right side is relatively low. At this time, the wind pressure difference ΔP will be a positive value, and according to the linear function, the power of the fan will be adjusted accordingly. Specifically, the power of the right fan will increase, while the power of the left fan will decrease, in order to try to balance the wind pressure on both sides, so as to achieve the purpose of the same amount of wind on both sides. When the child leans right, the situation is the opposite of the above, but the adjustment principle is the same.

[0146] Preferably, the preset power adjustment function is constructed based on a sigmoid function, and the preset power adjustment function is as follows:

[0147]

[0148] In the formula, a is a preset slope parameter, b is a preset center parameter, and ΔP is the difference between the first left wind pressure value and the first right wind pressure value;

[0149] Specifically, a is a positive number that controls the slope of the sigmoid function, i.e. the sensitivity of the function, and b is responsible for shifting the function, indicating when the wind pressure difference is what, the power adjustment is half power. The values of a and b can be set according to specific circumstances, which are not limited here,

[0150] When using the sigmoid function for power adjustment, the principle is similar to the linear function, but the characteristics of the sigmoid function make it have smoother adjustment ability and natural response curve. When the input value, i.e. the wind pressure difference ΔP, is very small or very large, the output of the sigmoid function approaches its upper and lower limits, but when the input value approaches 0, the output of the function will have a rapid change. Using the sigmoid function for power adjustment can achieve smooth power change instead of sudden change. When the wind pressure difference is small, i.e. the child's inclination is small, the power adjustment will also be relatively small, but when the wind pressure difference increases, i.e. the child's inclination increases, the power adjustment will be more obvious.

[0151] Further, the sigmoid function has a natural saturation characteristic, which means that when the wind pressure difference is very large or very small, the power adjustment increment will gradually decrease and approach an upper limit or a lower limit. This can avoid over-adjustment.

[0152] The power adjustment value is calculated by the following formula:

[0153] P adjust = P max *(σ(ΔP)-0.5)*2;

[0154] where P adjust is the power adjustment value, P max is the maximum power of the fan, and σ(ΔP) is the pre-set power adjustment function.

[0155] With the above power adjustment value calculation formula, the value obtained based on the sigmoid function can be adjusted to make its output range meet the specific power adjustment requirements. When ΔP = 0, i.e. there is no wind pressure difference or the child is sitting exactly in the center, P adjust = 0, which means the power of the fan does not need to be adjusted. When ΔP increases, the child leans to one side, the value of P adjust will increase or decrease depending on the positive or negative of ΔP, which will cause the power of the fan to increase or decrease accordingly, ensuring that the power of the fan can be effectively, bounded and symmetrically adjusted according to the wind pressure difference value ΔP.

[0156] In this embodiment, using the sigmoid function for power adjustment has the following advantages:

[0157] The non-linear characteristic of the sigmoid function means that when the wind pressure difference value ΔP is small, the adjustment of the power is more sensitive, while when ΔP is large enough, the incremental adjustment becomes less and less sensitive. There will be significant feedback for small sitting posture changes, but when the offset is too large, the system will not overreact.

[0158] The output of the sigmoid function is limited in the range of (0, 1), and after appropriate conversion, the range of the power adjustment value P adjust is limited in (-Pmax, Pmax). This means that no matter how large the wind pressure difference value ΔP is, the power adjustment of the fan will not exceed its maximum power range, thereby ensuring the safe operation of the fan; and by adjusting the parameters of the sigmoid function, i.e. a and b, the response speed and sensitivity of the system can be easily adjusted to meet different application requirements or user preferences.

[0159] The child seat with the blowing and sucking air temperature adjusting device provided by the embodiment of the present application can quickly and effectively adjust the temperature according to the ambient temperature and the needs of the child, thereby providing higher comfort, the air is sucked away from the first air vent and discharged from the second air vent, thereby avoiding the discomfort possibly caused by directly blowing air to the child, and the seat can be effectively kept dry and comfortable, the cooling and heating unit can not only provide appropriate ventilation function, but also provide the child with the required cooling or heating effect, thereby adapting to various weather conditions, the design of the first air vent on the inner shell of the seat and the second air vent on the outer shell of the seat ensures the effective circulation of air between the inside and outside of the seat, which helps to provide better temperature and humidity control, the bidirectional air suction and discharge fan and the seat structure specially designed for children, including the backrest, the cushion and the wing, ensure that the air flow can be uniformly distributed in different modes, thereby avoiding the discomfort caused by uneven temperature.

[0160] In summary, the present application not only provides a comfortable sitting environment with adjustable temperature for children, but also effectively solves the temperature adjustment problem in traditional child seats through the unique blowing and sucking air temperature adjusting device, thereby providing higher comfort and safety.

[0161] Embodiment 2

[0162] The embodiment of the present application provides a vehicle, which comprises the child seat with the blowing and sucking air temperature adjusting device according to the embodiment 1.

[0163] In the embodiment, the vehicle comprises the child seat with the blowing and sucking air temperature adjusting device according to the embodiment 1, the blowing and sucking air temperature adjusting device can adjust the air volume according to the sitting posture of the child and the real-time needs, thereby providing a more comfortable riding environment for the child, especially in extreme temperature conditions, the seat can automatically adjust the air volume according to the real-time air pressure difference, thereby providing personalized comfort experience for the child, the blowing and sucking air temperature adjusting device can possibly reduce or replace the use of part of the traditional vehicle-mounted air conditioner or heating system, thereby achieving energy saving and reducing carbon emissions, in cold and warm alternating or humid environments, the seat can become a breeding ground for bacteria and mold, and the blowing and sucking air temperature adjusting device can help to quickly dry the seat and reduce health problems caused by humidity.

[0164] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A child seat with a blowing / suction air temperature control device, characterized in that, The child seat includes: a blowing and suction temperature control device, a seat body and a headrest. The seat body includes an inner seat shell and an outer seat shell. The inner seat shell includes a backrest and a seat cushion from top to bottom, as well as a left side wing and a right side wing disposed on both sides of the backrest and the seat cushion. A plurality of first ventilation openings are provided on the inner seat shell and a plurality of second ventilation openings are provided on the outer seat shell. The blowing and suction temperature control device includes a plurality of blowing and suction temperature control units disposed on the seat body. Each blowing and suction temperature control unit includes a fan and a cooling and heating unit. The cooling and heating unit is used to heat or cool the airflow flowing through it. The fan includes a bidirectional exhaust fan. The bidirectional exhaust fan has a forward-rotating suction mode and a reverse-rotating blowing mode, so that the blowing and suction temperature control device has a suction mode, a heating and blowing mode, and a cooling and blowing mode. When in the heating and blowing mode or the cooling and blowing mode, the fan delivers airflow from the second vent to the first vent. When in the suction mode, the fan delivers airflow from the first vent to the second vent. The first ventilation openings are respectively disposed on the seat cushion, the backrest, the left side wing and the right side wing. A plurality of first ventilation openings located on the left side wing and a plurality of first ventilation openings located on the right side wing are symmetrically arranged. The inner shell of the seat also includes a perforated plate disposed on the outside of each of the first ventilation openings. The child seat also includes a wind pressure detection device, which includes a wind pressure value processing unit and a plurality of wind pressure detection units disposed at the first ventilation openings of the seat cushion and the backrest. The wind pressure detection units are used to obtain the wind pressure value of the corresponding first ventilation opening. The wind pressure value processing unit is connected to each of the wind pressure detection units and is used to obtain the sitting posture of the child based on the wind pressure value obtained by each of the wind pressure detection units. If the difference between the wind pressure value obtained by the wind pressure detection unit at the first ventilation opening on the backrest and the first preset wind pressure threshold is less than or equal to the first preset difference, the child sitting in the seat is in a reclining posture, and the power of the fan of all the blowing and suction temperature control units is set to the first preset power. If the difference between the wind pressure value obtained by the wind pressure detection unit at the first ventilation opening on the backrest and the first preset wind pressure threshold is greater than the first preset difference, the wind pressure value obtained by the wind pressure detection unit at the first ventilation opening on the seat cushion is obtained. If the difference between the wind pressure value obtained by the wind pressure detection unit at the first vent of the seat cushion and the second preset wind pressure threshold is greater than or equal to the second preset difference, the child sitting in the seat is in a forward-leaning posture, and the power of the fans of all the blowing and suction temperature control units is set to the second preset power; otherwise, the child sitting in the seat is in a backward-leaning posture, and the power of the fans of all the blowing and suction temperature control units is set to the first preset power. Wherein, the first preset power is less than the second preset power.

2. The child seat with a blowing and suction temperature control device according to claim 1, characterized in that, The seat inner shell and seat outer shell include several cavities, which communicate with several first ventilation openings provided on the seat inner shell. The blowing and suction temperature control unit also includes a three-way interface, a first pipe and a second pipe. The exhaust port of the fan is connected to the second ventilation opening provided on the seat outer shell. The air outlet of the fan is connected to one end of the three-way interface. The other end of the three-way interface has an upper air outlet and a lower air outlet. The lower air outlet is connected to one end of the second pipe. The other end of the second pipe is connected to the cavity. The upper air outlet is connected to one end of the first pipe. The other end of the first pipe is connected to the second ventilation opening. The cooling and heating unit is provided on the inner wall of the three-way interface. The first pipe is provided with movable blades. When the fan is in the blowing mode, the movable blades are in the open state. When the fan is in the suction mode or the stop mode, the movable blades are in the closed state.

3. The child seat with a blowing and suction temperature control device according to claim 2, characterized in that, The cooling and heating unit includes a semiconductor cooling chip; When the cooling and heating unit is in the heating and blowing mode, the direction of the current flowing through the semiconductor cooling chip is the first direction, so that the cooling end of the semiconductor cooling chip corresponds to the upper air outlet and the heating end corresponds to the lower air outlet, and the fan is in the blowing mode. When the cooling and heating unit is in cooling and blowing mode, the direction of the current flowing through the semiconductor cooling chip is the second direction, so that the cooling end of the semiconductor cooling chip corresponds to the lower air outlet and the heating end corresponds to the upper air outlet, and the fan is in blowing mode. The first direction and the second direction are opposite.

4. The child seat with a blowing and suction temperature control device according to claim 3, characterized in that, The blowing and suction temperature control device also includes a temperature sensor installed in the inner shell of the seat to obtain the real-time temperature of the inside of the child seat; When the real-time temperature is less than the first temperature threshold, the fan is controlled to operate in the blowing mode and a current in the first direction is applied to the semiconductor cooling chip, so that the airflow cooled at the cooling end flows through the upper air outlet and is discharged to the outside of the child seat from the second vent, and the airflow heated at the heating end flows through the lower air outlet, the second pipe and the cavity and is discharged to the inside of the child seat from the first vent. When the real-time temperature is greater than the second temperature threshold, the fan is controlled to operate in the blowing mode and a current in the second direction is applied to the semiconductor cooling chip, so that the airflow heated at the heating end flows through the upper air outlet and is discharged to the outside of the child seat from the second vent, and the airflow cooled at the cooling end flows through the lower air outlet, the second pipe and the cavity and is discharged to the inside of the child seat from the first vent. Wherein, the first temperature threshold is less than the second temperature threshold.

5. The child seat with a blowing and suction temperature control device according to claim 4, characterized in that, The blowing and suction temperature control device also includes a humidity sensor installed in the inner shell of the seat to obtain the real-time humidity inside the child seat; When the real-time temperature is between the first temperature threshold and the second temperature threshold, and the real-time humidity is between the first humidity threshold and the second humidity threshold, the fan is controlled to operate in the blowing mode and the current applied to the semiconductor cooling chip is stopped. The airflow flows from the fan to the upper air outlet and is discharged from the second vent to the outside of the child seat. At the same time, it flows through the lower air outlet, the second pipe and the cavity and is discharged from the first vent to the inside of the child seat to achieve air circulation. When the real-time temperature is between the first temperature threshold and the second temperature threshold and the real-time humidity is greater than the second humidity threshold, the fan is controlled to operate in suction mode and the current applied to the semiconductor cooling chip is stopped. The airflow enters from the first vent and flows sequentially through the cavity, the second pipe, the lower air outlet, the first pipe, and is discharged from the second vent to the outside of the child seat through the fan. Wherein, the first humidity threshold is less than the second humidity threshold.

6. The child seat with a blowing / suction temperature control device according to claim 1, characterized in that, The blowing and suction temperature control device includes a blowing and suction temperature control unit for blowing or suctioning air to the first vents provided on the seat cushion, the backrest, the left wing and the right wing respectively. The wind pressure detection device also includes wind pressure detection units provided on the first vents of the seat cushion and the backrest respectively. If the difference between the wind pressure value obtained by the wind pressure detection unit at the first ventilation opening on the backrest and the first preset wind pressure threshold is less than or equal to the first preset difference, the power of the fans of all the blowing and suction units is set to the first preset power, and the wind pressure values ​​obtained by the wind pressure detection units at the first ventilation openings at the left and right wings are recorded as the first left wind pressure value and the first right wind pressure value, respectively. When the difference between the first left wind pressure value and the first right wind pressure value is greater than or equal to the third preset difference, a power adjustment value is obtained based on the difference between the first left wind pressure value and the first right wind pressure value and a preset power adjustment function, and the power of the blower of the blowing and suction temperature control unit that blows or sucks air to the first ventilation openings set on the left and right wings is adjusted according to the power adjustment value. The preset power adjustment function is constructed based on a linear function or a nonlinear function.

7. The child seat with a blowing / suction temperature control device according to claim 6, characterized in that, The preset power adjustment function is constructed based on the sigmoid function, and the preset power adjustment function is as follows: In the formula, a is the preset slope parameter, b is the preset center parameter, and ΔP is the difference between the first left-side wind pressure value and the first right-side wind pressure value. The power adjustment value is calculated using the following formula: In the formula, P adjust For the power adjustment value, P max σ is the maximum power of the fan, and σ(ΔP) is the preset power adjustment function.

8. A vehicle, characterized in that, The vehicle includes a child seat with a blowing and suction temperature control device as described in any one of claims 1 to 7.

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