Sleep Quality-Improving Grounded Sleep-Inducing Thermal-Based Temperature Control System

Abstract

The present invention relates to a grounded sleep-inducing thermal-based temperature control system comprising: an electric heating pad unit placed on a user's bed; a grounded shielding unit provided on the electric heating pad unit for shielding electromagnetic waves or inducing leakage current to the ground side; an environmental sensor unit for detecting temperature, humidity, and surface temperature of the electric heating pad unit within the bed; a sleep state detection unit for determining a sleep state based on at least one of the user's body movement, pressure distribution, heart rate, and respiration; a portable controller; and an integrated control unit for controlling the heating operation of the electric heating pad unit according to the detected values, determined values, and set values ​​thereof. The integrated control unit automatically corrects at least one of the target temperature, heating output, current duty cycle, remaining operating time, and safety cutoff conditions of the electric heating pad unit depending on whether the user's sleep state is determined to be a state before falling asleep, a state of falling asleep, a state of deep sleep, a state of increased tossing and turning, a state before waking up, or a state after waking up. In addition, the integrated control unit calculates the dew point or condensation risk level within the bed and determines whether to execute or the priority of overheating prevention control, condensation prevention control, electromagnetic wave attenuation control, grounding status / leakage current safety control, and deep sleep thermal pattern control. Accordingly, the present invention can improve thermal comfort at each sleep stage, ensure safety regarding electromagnetic waves and leakage current, and improve the quality of sleep by suppressing condensation and local overheating within the bed.

Description

Technology Field

[0001] The present invention relates to a grounded, sleep-inducing thermal-based temperature control system for improving sleep quality, and more specifically, to a sleep-inducing thermal control technology comprising: an electric heating pad unit placed on a user's bed; a grounded shielding unit provided on the electric heating pad unit to shield electromagnetic waves or induce leakage current to the ground side; an environmental sensor unit that detects the temperature and humidity inside the bed and the surface temperature of the electric heating pad unit; a sleep state detection unit that determines a sleep state based on at least one of the user's body movement, pressure distribution, heart rate, and respiration; and an integrated control unit that controls the target temperature, heating output, current duty cycle, operating time, and safety cutoff conditions of the electric heating pad unit according to the detection values ​​or determination values ​​of the environmental sensor unit and the sleep state detection unit.

[0002] In addition, the present invention relates to a smart heating and temperature control system for a bed that stably controls the thermal environment within the bed in response to the user's falling asleep, deep sleep, increased tossing and turning, and pre-awakening state by mutually performing contact heating operation, grounding safety operation, electromagnetic wave attenuation operation, condensation prevention operation, and sleep state-linked heating operation of an electric heating pad. Background Technology

[0004] Recently, electric heating pads, heated mats, and bed heating pads are widely used to maintain body temperature, alleviate cold sensations, and aid in deep sleep. While these heated bedding products offer the advantage of providing contact heat to the lower body using electric heating methods, there is a possibility of electromagnetic waves, leakage current, or static electricity generation during the current flow process of the heating element. Furthermore, given the nature of these products, which users come into contact with for extended periods while sleeping, ensuring electrical safety and perceived comfort is critical. Accordingly, conventional earthing heating mat technologies have been proposed, which involve placing a shielding fabric above the heating wires or connecting a grounding terminal to the shielding fabric or heating wires to guide electromagnetic waves or static electricity toward the ground. However, these conventional technologies primarily focus on the grounding structure or electromagnetic shielding structure of the heating mat itself, and have not sufficiently presented a control structure that comprehensively detects environmental conditions such as the temperature and humidity inside the bed, the surface temperature of the electric heating pad, and indoor temperature and humidity, determines the sleep state based on the user's body movement, pressure distribution, heart rate, or respiration, and then actively corrects the target temperature, heating output, current duty cycle, remaining operating time, and safety cutoff conditions of the electric heating pad according to the determined value. Furthermore, while a combination of factors may occur during sleep, such as increased humidity inside the bedding, reduced difference between the surface temperature of the heating pad and the dew point, localized overheating, increased tossing and turning, and changes in body temperature before waking up, existing heating mats have limitations in that they cannot integrally perform overheating prevention control, condensation prevention control, electromagnetic wave attenuation control, and deep sleep thermal pattern control by linking these biological responses at each sleep stage with the risk of condensation. Therefore, there is a need to develop a new sleep-inducing thermal and temperature control system that can improve sleep quality by precisely controlling thermal operation according to the bed environment and the user's sleep condition while ensuring electrical safety through a grounded shielding structure. Prior art literature

[0006] 1. Patent Registration No. 10-2850112 (Application No. 10-2024-0182207) The problem to be solved

[0007] The present invention has as its main objective the problem that conventional electric heating pads, heating mats, or earthing heating bedding merely regulate the amount of heat generated by heating wires or ground a shielding fabric, and thus fail to integrate into a single control logic the issues of changes in the user's biological state during actual sleep, changes in temperature and humidity inside the bed, changes in the surface temperature of the electric heating pad, the risk of condensation, localized overheating, electromagnetic wave attenuation, and leakage current safety.

[0008] In particular, while the user is in a sleep state, the need for preheating before falling asleep, the decrease in body temperature after falling asleep, the need to suppress excessive heat generation during deep sleep, the imbalance in perceived temperature when tossing and turning increases, and the need for a gradual increase in temperature before waking up change continuously over time. However, conventional heating mats often generate heat simply and repeatedly according to the temperature or timer conditions initially set by the user, making it difficult to actively form a thermal environment suitable for the sleep stage. Accordingly, the present invention aims to provide a deep sleep-inducing control structure capable of automatically correcting the target temperature, heating output, current duty cycle, remaining operating time, and safety cutoff conditions of the electric heating pad according to the sleep stage by having the integrated control unit interpret together the detection values ​​of the temperature inside the bed, humidity inside the bed, surface temperature of the electric heating pad, and indoor temperature and humidity of the environment sensor unit, and the sleep state determination values ​​based on body movement, pressure distribution, heart rate, or respiration of the sleep state detection unit.

[0009] In addition, the present invention has another objective of securing electrical safety suitable for prolonged contact by a user by placing a grounded shielding part on the upper or lower side of a heating part and electrically connecting a copper outer tube or aluminum foil capable of functioning as a first shielding electrode, a second shielding electrode, a grounding wire, and an auxiliary shielding layer, thereby shielding electromagnetic waves that may be generated during the current flow of the heating part and inducing leakage current or electrostatic components to the ground side, while maintaining insulation between the heating part and the shielding electrode. In addition, the present invention aims not merely to simply stack an upper cover layer, a temperature distribution control layer, a first shielding electrode, a heating element, a condensation-blocking insulation layer, a heat storage layer, a second shielding electrode, and a lower insulation layer, but to distribute the functions of each layer so that planar heat diffusion, electrical insulation heat conduction, heat storage and complete heat dissipation, moisture protection and insulation, reduction of downward heat loss, and grounding shielding functions do not interfere with each other, thereby mitigating local overheating, suppressing a rapid rise or fall in surface temperature, and improving durability against repeated loading, folding, moisture penetration, and degradation of insulation.

[0010] In addition, the present invention aims to solve the problem in which condensation may occur on the surface of the electric heating pad, the inner insulation layer, or the outer surface of the outer sheath tube due to a decrease in the difference between the surface temperature of the heating pad and the dew point inside the bed during the process of cooling and dehumidifying the air inside the bed during cooling or dehumidification operation. To achieve this, the integrated control unit applies a fine current to the heating element without completely shutting it off based on the humidity inside the bed, the surface temperature of the heating pad, the indoor temperature and humidity, and the dew point, while simultaneously correcting the compressor rotation speed, expansion valve opening, cold air supply fan airflow volume, and fine current application duty ratio. This is achieved by simultaneously achieving a dehumidification effect and suppressing condensation.

[0011] In addition, the present invention aims to prevent problems such as overheating of the central contact heating and the outer air conditioning or condensation inside the bedding by partitioning the contact heating area of ​​the electric heating pad section placed in the center of the bed and the air control area of ​​the outer discharge section that supplies warm air, cold air, dehumidified air, or dry air through the outer or lower part of the bed, and by having the integrated control unit control them in conjunction. Furthermore, the present invention aims to increase energy utilization efficiency compared to the conventional method relying on simple electric resistance heating, and to reduce the compression ratio burden of the compressor by raising the evaporation temperature or evaporation pressure, by supplying the condensation heat of the heat pump device to the bed or the internal space of the bedding through a water circulation cycle, a heating section, a radiator, an air passage under the bed, and an outer discharge section, and by supplying solar heat, geothermal energy, residual heat of the electric heating pad section, heat storage of the heat storage layer, or waste heat within the bed through a composite heat source supply section to the heat source side of the outdoor unit that functions as an evaporator during heating operation.

[0012] Thus, the present invention aims to provide a complex and organic thermal temperature control system for inducing deep sleep, which is difficult to easily derive from conventional simple thermal mats or simple grounded electric blankets, by combining grounding safety, electromagnetic wave attenuation, heating linked to sleep state, dew point-based condensation prevention, separate control of central contact heating and perimeter air conditioning, utilization of heat pump condensation heat, and complex heat source recovery control into a single integrated control system. means of solving the problem

[0014] To solve the above problem, the present invention is configured to include an electric heating pad unit placed on a user's bed, a grounding shielding unit provided on the electric heating pad unit to shield electromagnetic waves or induce leakage current to the ground side, an environment sensor unit that detects at least one of the temperature inside the bed, humidity inside the bed, surface temperature of the electric heating pad unit, and indoor temperature and humidity, a sleep state detection unit that determines the user's sleep state based on at least one of the user's body movement, pressure distribution, heart rate, and respiration, a portable controller in which the user can input a set temperature or operating time, and an integrated control unit that controls the heating operation of the electric heating pad unit based on the set value of the portable controller, the detection value of the environment sensor unit, and the determination value of the sleep state detection unit.

[0015] The integrated control unit described above is configured not merely to control the electric heating pad unit on and off according to a set temperature, but to determine whether the user's sleep state corresponds to a state before falling asleep, a state of falling asleep, a state of deep sleep, a state of light sleep, a state of increased tossing and turning, a state before waking up, or a state after waking up, and to automatically correct at least one of the target temperature, heating output, current duty ratio, remaining operating time, and safety cutoff condition of the electric heating pad unit based on the determination result.

[0016] Accordingly, the present invention can preheat the bed surface to an appropriate level before the user falls asleep, mitigate excessive heat generation after the onset of sleep is estimated, maintain low power or perform slow heat dissipation control during deep sleep, correct the heat generation pattern by determining whether there is a perceived temperature imbalance or local overheating during increased tossing and turning, and perform gradual temperature increase control before waking up.

[0017] In addition, the present invention calculates the dew point or condensation risk level within the bed from the detection value of the environment sensor unit, and calculates the estimated time of falling asleep, the time of increased tossing and turning, or the time before waking up from the judgment value of the sleep state detection unit, and based on this, determines whether to execute or the priority of at least one of overheating prevention control, condensation prevention control, electromagnetic wave attenuation control, grounding state / leakage current safety control, and deep sleep thermal pattern control. According to such a configuration, the heating control of the electric heating pad unit is not limited to simple temperature control, but can be performed in a complex control method that simultaneously considers the bed environment, user biological response, grounding safety state, and condensation risk. In addition, the electric heating pad of the present invention has a functionally laminated structure comprising an upper cover layer that contacts the user's body or bedding, a temperature distribution control layer that diffuses heat generated from a heating element in a planar direction including the length and width directions of the electric heating pad, a grounding shielding part for electromagnetic shielding and leakage current induction, a heating element that performs electrical heating, a condensation-blocking insulation layer that suppresses moisture penetration and condensation, a heat storage layer that temporarily stores or gradually releases heat from the heating element, and a lower insulation layer that reduces downward heat loss.

[0018] The above-mentioned temperature distribution control layer is configured to include a planar heat diffusion layer, an insulating heat conduction layer, and a heat storage and heat dissipation layer, thereby dispersing local heat generation in a planar direction, ensuring heat transfer efficiency while maintaining electrical insulation, and mitigating a rapid rise or fall in surface temperature.

[0019] The above-described grounding shield is connected to a grounding terminal while being electrically insulated from the heating element, and is configured to guide electromagnetic waves, electrostatic components, or leakage current generated during the current flow of the heating element to the ground side. Additionally, the heating element may be formed with a multilayer covering structure including a heating core, an insulating core tube, reinforcing yarn, an inner covering tube, a metal outer tube, a metal foil, and an outer covering tube, and the metal outer tube or metal foil may function as an auxiliary shielding layer while being insulated from the heating core.

[0020] Accordingly, the present invention can simultaneously secure heating efficiency, electrical safety, shielding performance, flexibility, wear resistance, and moisture penetration inhibition performance. Furthermore, the present invention is not limited to controlling the bed environment solely through central contact heating of the electric heating pad; it may further include a bed auxiliary air conditioning unit positioned at the bottom or side of the bed to supply warm air, cold air, dehumidified air, or dry air to the interior space of the bed, the lower space, or the interior space of the bedding.

[0021] The above-described bed auxiliary air conditioning unit includes an air conditioning heat source unit, an air passage under the bed, an outer discharge unit, an outer distribution duct, and an outer air volume control damper, and is configured to partition the central contact heating area of ​​the electric heating unit and the air conditioning area of ​​the outer discharge unit from each other. Accordingly, the electric heating unit provides contact heat to the central lower part of the user's body, and the bed auxiliary air conditioning unit supplies warm, cold, or dehumidified air to the inside of the bedding or the outer area of ​​the bed, thereby ensuring that contact heat and air conditioning work complementarily. In addition, the integrated control unit controls the heating operation of the electric heating unit in conjunction with the supply of warm, cold, or dehumidified air or the drying operation of the bed auxiliary air conditioning unit, thereby preventing overlapping overheating or condensation between the central heating and the outer air conditioning. Furthermore, the bed auxiliary air conditioning unit of the present invention may include a heat pump device as an air conditioning heat source unit, and the heat pump device is configured to include a compressor, a condenser, an evaporator, an outdoor heat exchanger, an expansion valve, an accumulator, an internal heat exchanger, a refrigerant flow path changing unit, and a water circulation cycle. During heating operation, the condensation heat of the high-temperature and high-pressure refrigerant discharged from the compressor is transferred to the water circulation cycle, and the heat medium passing through the water circulation cycle is supplied to the air passage under the bed or the outer discharge unit through a radiator to auxiliaryly heat the bed or the interior space of the bedding. During cooling or dehumidification operation, the air inside the bed or the air inside the bedding is cooled or dehumidified through the evaporator, and at this time, the integrated control unit finely energizes the heating unit without completely shutting it off so that a safe temperature difference between the floor mat surface temperature and the dew point inside the bed is maintained, and simultaneously corrects the compressor rotation speed, expansion valve opening, airflow volume, and fine energization duty ratio.

[0022] Through such control, the present invention can suppress the occurrence of condensation on the surface of the heating pad, the inner insulation layer, or the outer surface of the outer sheathing tube even during dehumidification operation. Furthermore, the present invention may include a composite heat source supply unit that supplies at least one of solar heat, geothermal energy, residual heat from the electric heating pad section, heat storage from the heat storage layer, or waste heat within the bed as an auxiliary heat source to the heat pump device. The composite heat source supply unit includes a solar heat supply unit, a geothermal heat supply unit, and an electric heating pad recovery heat supply unit, and is configured to supply the heat supplied from these directly to the heating section of the water circulation cycle or to the heat source side of an outdoor heat exchanger that functions as an evaporator during heating operation. In this case, the integrated control unit controls the opening / closing state or flow rate of the auxiliary heat source path based on at least one of the solar heat storage temperature, the underground heat source temperature, the electric heating pad recovery heat temperature, the outdoor temperature, the evaporation pressure, the compressor suction superheat, and the heat medium temperature at the condenser outlet. Accordingly, the evaporation temperature or pressure of the heat pump device can be increased and the compression ratio of the compressor reduced, thereby improving energy efficiency compared to simple electric resistance heating. Ultimately, by providing a solution that organically links contact heating of the electric heating pad section, electromagnetic wave attenuation and leakage current induction of the grounded shielding section, deep sleep thermal control based on the environment sensor section and sleep state detection section, dew point-based condensation prevention control, external air conditioning by the bed auxiliary air conditioning section, and the utilization of heat pump condensation heat and complex heat source recovery control through a single integrated control unit, the present invention simultaneously achieves electrical safety, sleep comfort, condensation suppression, and energy efficiency that are difficult to achieve with conventional simple heating mats or simple grounded electric heating pads. Effects of the invention

[0025] According to the present invention, the heating control of the electric heating pad is not limited to simple heating control of the electric heating pad; it can automatically correct the target temperature, heating output, current duty cycle, remaining operating time, and safety cutoff conditions of the electric heating pad by comprehensively reflecting the temperature inside the bed, humidity inside the bed, surface temperature of the electric heating pad, indoor temperature and humidity, user's body movement, pressure distribution, heart rate, and respiratory state. This provides the effect of enabling precise deep sleep thermal control corresponding to the user's actual sleep state. In particular, the present invention can control the user's sleep state by classifying it into pre-sleep state, sleep state, deep sleep state, light sleep state, increased tossing and turning state, pre-awakening state, and post-waking state. Therefore, the bed surface can be appropriately preheated before sleep, excessive heating can be suppressed after sleep, the body temperature can be gradually lowered using low output or slow heat dissipation methods during deep sleep, local overheating or perceived temperature imbalance can be alleviated during the increased tossing and turning state, and a gradual increase in temperature can be provided without sudden temperature changes before waking.

[0026] Accordingly, compared to conventional simple timer-type or temperature-maintaining electric heating pads, this invention has the effect of increasing thermal comfort during sleep, reducing the sensation of overheating, stuffiness, coldness, and tossing and turning, and improving the user's sleep continuity and perceived deep sleep. In addition, since the present invention can shield electromagnetic waves that may be generated from the heating element through a grounded shielding part and induce leakage current or electrostatic components to the ground side, it can increase electrical stability in a bed heating device that is in contact with the user's body for a long time.

[0027] In particular, since the shielding electrode is connected to the grounding terminal while being electrically insulated from the heating element, and the metal outer tube or metal foil of the heating element can function as an auxiliary shielding layer, it is possible to simultaneously perform electromagnetic wave attenuation, leakage current induction, and electrostatic reduction functions while maintaining the heating performance of the heating core. Therefore, unlike a heating mat with a simple grounding wire connection, the present invention structurally separates the heating element, shielding electrode, insulation layer, and grounding path, thereby providing the effect of simultaneously ensuring electrical safety and heating efficiency. Furthermore, since the upper cover layer, temperature distribution control layer, grounding shielding element, heating element, condensation-blocking insulation layer, heat storage layer, and lower insulation layer are stacked to share their respective functions, the heat generated from the heating element is prevented from concentrating at a specific point and can be uniformly diffused along the length and width directions of the electric heating mat.

[0028] Accordingly, localized overheating of the floor mat surface is alleviated, and the phenomenon of high temperatures concentrating on only parts of the user's body can be suppressed, while maintaining a stable surface temperature distribution even during prolonged use. Furthermore, since the temperature distribution control layer performs planar heat diffusion, electrical insulation heat conduction, and heat storage and gradual heat dissipation functions, the instantaneous temperature rise of the heating element is mitigated, and the stored heat is released gradually even after the current flow is reduced, thereby reducing the range of temperature fluctuations during sleep. This structure ensures that the user does not feel a sudden sensation of cold even when the current duty cycle of the heating element is lowered after falling asleep or during deep sleep, and provides the effect of maintaining a perceived warmth while reducing power consumption.

[0029] Furthermore, by applying a condensation-blocking insulation layer together with dew point-based control, the present invention can effectively suppress the problem of condensation occurring when the surface temperature of the heating pad approaches the dew point within the bed during cooling or dehumidification operation. In particular, the integrated control unit applies a fine current to the heating element without completely blocking it, based on the humidity within the bed, the surface temperature of the heating pad, indoor temperature and humidity, and the dew point. By simultaneously correcting the compressor rotation speed, expansion valve opening, airflow volume, and fine current duty cycle, it is possible to prevent moisture from condensing on the surface of the electric heating pad, the internal insulation layer, or the outer surface of the outer sheath tube while maintaining the dehumidification effect within the bed. As a result, the present invention has the effect of reducing problems such as condensation, reduced insulation performance, odor generation, bacterial proliferation, and reduced durability that may occur when the cooling / dehumidification air conditioning and the heating of the electric heating pad conflict with each other.

[0030] Furthermore, the present invention controls the central contact heating area of ​​the electric heating pad and the outer air control area of ​​the bed auxiliary air conditioning unit by partitioning them, thereby providing direct and stable contact heating to the central lower part of the user's body, while dispersing and supplying warm, cold, dehumidified, or dry air to the outer or lower part of the bed. Accordingly, unlike methods where the entire bed is excessively heated by the electric heating pad alone, the central contact heating and the outer air conditioning work complementarily to reduce temperature variations within the bedding and improve the thermal comfort of the entire bed. In particular, since the integrated control unit controls the airflow, discharge direction, and operating timing of the central heating and the outer discharge air in conjunction, it is possible to prevent problems such as overheating caused by the central heating and outer air conditioning or condensation inside the bedding. Additionally, since the present invention can supply the condensation heat of the heat pump device to the bed or the internal space of the bedding through a water circulation cycle, a heating unit, a radiator, an air passage under the bed, and an outer discharge unit, it can improve energy utilization efficiency compared to conventional electric heating pads that rely solely on electric resistance heating. In heating operation, the condensation heat of the high-temperature, high-pressure refrigerant discharged from the compressor can be utilized for auxiliary heating of the bed, and in cooling or dehumidification operation, the cooling or dehumidifying air that has passed through the evaporator can be supplied to the inside of the bed or bedding, so that heating, cooling, dehumidification, and bedding drying functions can be selectively performed depending on the season or indoor environment. In addition, since the present invention can recover solar heat, geothermal energy, residual heat from the electric heating pad, heat storage in the heat storage layer, or waste heat within the bed as a composite heat source and use it as an auxiliary heat source for the heat pump device, the evaporation temperature or evaporation pressure can be increased and the compression ratio burden of the compressor can be reduced even under conditions where the outside temperature is low.

[0031] Accordingly, the heating efficiency of the heat pump device is improved, and even if the direct heating output of the electric heating pad is reduced, the warmth of the entire bed can be maintained, and power consumption and the risk of overheating can be reduced simultaneously. In addition, since the residual heat of the electric heating pad, the heat storage of the heat storage layer, and waste heat within the bed can be recovered and reused as a heat source instead of simply being released to the outside, the present invention has excellent energy circulation and the effect of improving economic efficiency during long-term sleep operation.

[0032] Furthermore, the present invention allows the user to intuitively check or operate the set temperature, operating time, sleep mode, and electromagnetic wave attenuation status through a portable controller comprising a sleep mode button, an electromagnetic wave attenuation button, a temperature display window, a time display window, and an indicator lamp, thereby ensuring that user convenience is not compromised despite being a complex control system. In particular, if a grounding abnormality, leakage current abnormality, or a decrease in insulation resistance is detected, the indicator lamp may flash a warning or the output of the heating element may be limited, allowing the user to easily recognize electrical abnormalities and enabling the system to actively switch to safe operation in abnormal conditions.

[0033] Consequently, by combining grounding safety, electromagnetic wave attenuation, heating linked to sleep conditions, dew point-based condensation prevention, compartmental control of central contact heating and perimeter air conditioning, heat pump condensation heat utilization, and combined heat source recovery control into a single integrated control system, the present invention has the effect of simultaneously improving electrical safety, sleep comfort, condensation suppression, energy efficiency, and ease of use, which conventional simple electric heating pads, simple earthing mats, or simple bed air conditioning systems could not individually provide. Brief explanation of the drawing

[0035] FIG. 1 is a system configuration diagram schematically showing the overall configuration of a grounded sleep-inducing thermal-based temperature control system according to the present invention. FIG. 2 is a cross-sectional view of the lamination of the electric heating pad portion according to the present invention. FIG. 3 is a schematic diagram of a heating means according to the present invention. FIG. 4 is a front view of the portable controller of the present invention. FIG. 5 is a diagram showing a sleep state-linked multi-stage thermal control profile according to the present invention. FIG. 6 is a schematic diagram showing the air supply structure of a bed auxiliary air conditioning unit according to the present invention. FIG. 7 is a diagram showing the refrigerant flow path and heat transfer structure for heating operation of a heat pump device according to the present invention. FIG. 8 is a diagram showing the refrigerant flow path for cooling or dehumidification operation of a heat pump device according to the present invention. FIG. 9 is a diagram showing the configuration of a combined heat source supply unit that utilizes solar heat, geothermal heat, and residual heat from an electric heating pad according to the present invention. FIG. 10 schematically illustrates the configuration of a heat pump device according to the present invention. FIG. 11 is a flowchart of the condensation prevention, electromagnetic wave attenuation, and safety blocking cooperative control according to the present invention. FIG. 12 illustrates an electric heating wire according to another embodiment of the present invention. Specific details for implementing the invention

[0036] The grounded sleep-inducing thermal-based temperature control system of the present invention for improving sleep quality to solve the above problems is,

[0037] An electric heating pad unit (100) placed on the user's bed; a grounding shielding unit (120) provided on the electric heating pad unit (100) to shield electromagnetic waves or induce leakage current to the ground side; a portable controller (360) for setting the heating temperature and operating time of the electric heating pad unit (100); an environment sensor unit (200) for detecting at least one of the temperature inside the bed, humidity inside the bed, surface temperature of the electric heating pad unit, and indoor temperature and humidity; and a sleep state detection unit (300) for determining the user's sleep state based on at least one of the user's body movement, pressure distribution, heart rate, and respiration. The apparatus includes an integrated control unit (700) that controls the heating operation of the electric heating pad unit (100) based on the setting value of the portable controller (360), the detection value of the environment sensor unit (200), and the determination value of the sleep state detection unit (300), and the bed includes a bed (B), and the electric heating pad unit (100) is positioned in the center of the bed corresponding to the lower central part of the user's body on the upper surface of the bed (B).

[0038] The integrated control unit (700) is configured to perform contact heating operation, grounding safety operation, and sleep state-linked heating operation of the electric heating pad unit (100) independently or in conjunction with each other. The integrated control unit (700) automatically corrects at least one of the target temperature, heating output, power supply duty ratio, remaining operating time, and safety cutoff condition of the electric heating pad unit (100) depending on whether the user's sleep state is determined to be a state before falling asleep, a state of falling asleep, a deep sleep state, a light sleep state, a state of increased tossing and turning, a state before waking up, or a state after waking up. It also controls the grounding state or electromagnetic wave attenuation state of the grounding type shielding unit (120) in conjunction with the operation state of the portable controller (360). Furthermore, the integrated control unit (700) calculates the dew point or condensation risk level within the bed from the detection value of the environment sensor unit (200), and calculates the user's estimated time of falling asleep, the time of increased tossing and turning, or the time before waking up from the determination value of the sleep state detection unit (300). It is characterized by determining whether to execute or the priority of at least one of a plurality of electric heating pad control modes, including overheating prevention control, condensation prevention control, electromagnetic wave attenuation control, grounding status / leakage current safety control, and deep sleep thermal pattern control.

[0041] And, the electric heating pad (100) comprises an upper cover layer (111) in contact with the user's body, a temperature distribution control layer (140) disposed below the upper cover layer (111) and diffusing heat generated from a heating element (130) provided in the electric heating pad (100) in a planar direction including the length direction and width direction of the electric heating pad (100) to alleviate local overheating, a first shielding electrode (121) of a grounding type shielding part (120) disposed below the temperature distribution control layer (140), a heating element (130) disposed below the first shielding electrode (121), a condensation blocking insulation layer (160) disposed below the heating element (130), a heat storage layer (150) disposed below the condensation blocking insulation layer (160) and temporarily storing or gradually releasing heat from the heating element (130), and the heat storage layer (150). A second shielding electrode (122) of a grounding type shielding part (120) positioned on the lower side, a lower insulation layer (112) positioned on the lower side of the second shielding electrode (122) to reduce downward heat loss, and a grounding wire electrically connecting at least one of the first shielding electrode (121) and the second shielding electrode (122) to a grounding terminal,

[0043] The upper cover layer (111) is formed as a skin-contact fiber layer that comes into direct contact with the user's body or bedding, and the skin-contact fiber layer is formed as an upper cover layer composition based on 100% by weight of the total fiber layer, comprising 40 to 44% by weight of a first component lyocell fiber, 26 to 30% by weight of a second component recycled polyester fiber, 12 to 15% by weight of a third component nylon-based abrasion-resistant fiber, 5 to 7% by weight of a fourth component polyurethane-based elastic fiber, 3 to 5% by weight of a fifth component ceramic-based far-infrared radiation particles, 1 to 2% by weight of a sixth component silver-zinc-based antibacterial particles, and 3 to 5% by weight of a seventh component silica-based moisture-absorbing particles, wherein the sum of the first to seventh components is 100% by weight;

[0045] The temperature distribution control layer (140) is formed as a triple functional layer in which a planar heat diffusion layer comprising a graphite sheet or a carbon fiber nonwoven fabric to diffuse heat generated from the heating element (130) in a planar direction, an insulating heat conductive layer comprising at least one electrical insulating ceramic filler among boron nitride, alumina, and magnesium oxide to provide thermal conductivity and electrical insulation, and a heat storage / heat dissipation layer comprising a microencapsulated phase change material to mitigate a rapid rise or fall in surface temperature are sequentially stacked;

[0048] The grounded shielding part (120) comprises a first shielding electrode (121) disposed between the temperature distribution control layer (140) and the heating part (130), wherein, based on 100 weight% of the total composition, the first shielding electrode (121) comprises 30 to 40 weight% of a first component, which is copper powder or copper flakes; 5 to 10 weight% of a second component, which is silver-coated copper powder; 5 to 12 weight% of a third component, which is nickel powder or nickel-coated carbon fiber; 4 to 10 weight% of a fourth component, which is graphite powder or graphene nanoplatelets; 1 to 5 weight% of a fifth component, which is conductive carbon black or carbon nanotubes; 25 to 38 weight% of a sixth component, which is a polyurethane-based or silicone-based elastic binder; and 3 to 8 weight% of a seventh component, which is a halogen-free phosphorus-based flame retardant or nitrogen-based flame retardant, wherein the sum of the first to seventh components is It is formed of a conductive shielding composition composed to be 100 weight%, and

[0049] The first shielding electrode (121) is electrically connected to a grounding terminal via a grounding wire while being electrically insulated from the heating element (130), thereby shielding electromagnetic waves generated from the heating element (130) and inducing leakage current to the ground side;

[0051] The above condensation-blocking insulating layer (160) is characterized by being formed of a moisture-proof and insulating composition based on 100% by weight of the total composition, comprising 45 to 60% by weight of a first component, which is a silicone-based or polyurethane-based insulating elastic resin; 10 to 20% by weight of a second component, which is an insulating thermal conductive filler of at least one of alumina, boron nitride, or magnesium oxide; 5 to 12% by weight of a third component, which is a silica or zeolite-based moisture-absorbing filler; 3 to 8% by weight of a fourth component, which is a fluorine-based or silane-based water-repellent additive; 8 to 15% by weight of a fifth component, which is a halogen-free flame retardant; and 1 to 5% by weight of a sixth component, which is a dispersant or coupling agent, wherein the sum of the first to sixth components is 100% by weight.

[0054] And, the heat storage layer (150) is formed from a heat storage composition comprising, based on 100% by weight of the total composition, 35 to 50% by weight of a first component, a silicone-based or polyurethane-based elastic resin; 15 to 30% by weight of a second component, a microencapsulated phase change material; 10 to 20% by weight of a third component, a ceramic heat storage particle selected from at least one of alumina, magnesium oxide, or boron nitride; 3 to 8% by weight of a fourth component, a graphite powder or carbon-based thermal conductive filler; 5 to 10% by weight of a fifth component, a halogen-free flame retardant; and 1 to 4% by weight of a sixth component, a dispersant or silane-based coupling agent;

[0056] The heating element (130) includes a heating means (70), and the heating means (70) is;

[0057] A heating core (71) made of multiple strands of carbon fiber strands;

[0058] A fluoropolymer-based core tube (72) that wraps around and insulates the outer circumference of the heating core (71), and

[0059] A carbon fiber reinforcing yarn (73) wound around the outer circumference of the core tube (72) to increase the durability of the core tube;

[0060] A PVC inner covering tube (74) that accommodates the carbon fiber reinforcing yarn (73) above;

[0061] A copper outer tube (75) that accommodates the inner tube (74) above;

[0062] Aluminum foil (76) wound around the outer circumference of the copper outer tube (75);

[0064] The copper outer tube (75) and aluminum foil (76) are electrically insulated from the heating core (71) and are selectively electrically connected to at least one of the ground wire, the first shielding electrode (121), or the second shielding electrode (122) of the grounded shielding part (120) to function as an auxiliary shielding layer;

[0066] It is provided with an outer covering tube (77) formed of an antibacterial and eco-friendly durable covering composition that accommodates the above aluminum foil (76) inside;

[0067] The above outer covering tube (77) serves as the outermost covering layer of the heating means (70) and suppresses wear caused by repeated loading by the user, folding, moisture penetration, and degradation of insulation.

[0068] The above outer covering tube (77) is formed of an antibacterial and eco-friendly durable coating composition having antibacterial properties, eco-friendliness, durability, flexibility, low odor, skin contact safety, and flame retardancy, and the coating composition comprises, based on 100% by weight of the total composition, 33 to 36% by weight of a first component bio-based thermoplastic polyurethane elastomer, 15 to 18% by weight of a second component low-volatility silicone elastomer, 7 to 10% by weight of a third component halogen-free phosphorus-based flame retardant, 5 to 8% by weight of a fourth component halogen-free nitrogen-based flame retardant, 5 to 8% by weight of a fifth component magnesium hydroxide, 4 to 7% by weight of a sixth component aluminum hydroxide, 4 to 7% by weight of an epoxidized vegetable oil or bio-based polyester plasticizer, 2 to 4% by weight of an eighth component silver-zinc antibacterial glass powder or zinc-based antibacterial ceramic powder, and It is characterized by comprising 2 to 5 weight percent of an abrasion-resistant and reinforcing filler comprising at least one of silica, kaolin, montmorillonite, and cellulose nanofibers, which are the ninth components.

[0071] And, the portable controller (360) comprises a temperature display window (361) positioned on the upper front side to display a set temperature or current control temperature as a number, a time display window (362) positioned spaced apart from the temperature display window (361) to display a set operating time or remaining operating time as a number, a deep sleep mode button (363) positioned below the temperature display window (361) or the time display window (362), an electromagnetic wave attenuation button (364) positioned spaced apart from the deep sleep mode button (363), a temperature increase button (365) to increase the set temperature displayed on the temperature display window (361), a temperature decrease button (366) to decrease the set temperature, a time increase button (367) to increase the set operating time displayed on the time display window (362), a time decrease button (368) to decrease the set operating time, a deep sleep mode indicator lamp (369) to indicate whether the deep sleep mode button (363) is input or whether the deep sleep mode is executed, and whether the electromagnetic wave attenuation button (364) is input. or includes an electromagnetic wave attenuation indicator lamp (370) that indicates whether the grounded shielding part (120) is activated, and

[0072] The above integrated control unit (700) keeps the sleep mode indicator lamp (369) in an off state before the sleep mode button (363) is input, and

[0073] When the above-mentioned deep sleep mode button (363) is input, the above-mentioned deep sleep mode indicator lamp (369) is turned on or flashed, and the set temperature of the above-mentioned temperature display window (361) and the set operating time of the above-mentioned time display window (362) are converted into a temperature and time profile for deep sleep mode, and the above-mentioned deep sleep mode temperature and time profile is composed of a multi-stage thermal control profile including at least one of a preheating section before falling asleep, a cooling section after falling asleep, a deep sleep maintenance section, a section corresponding to increased tossing and turning, and a gradual heating section before waking up.

[0074] The integrated control unit (700) corrects at least one of the central heating amount, current duty ratio, target surface temperature, and remaining operating time of the electric heating unit (100) in each section of the multi-stage heating control profile, thereby controlling the contact heating of the electric heating unit (100) to correspond to the user's sleep stage, and when the electromagnetic wave attenuation button (364) is input, it connects the shielding electrode of the grounding type shielding unit (120) to the grounding terminal or switches at least one of the current waveform, current phase, current duty ratio, or zero-crossing switching timing of the heating unit (130) to an electromagnetic wave reduction condition, and if a grounding abnormality, leakage current abnormality, or insulation resistance decrease of the grounding type shielding unit (120) is detected, it displays the electromagnetic wave attenuation indicator lamp (370) in a warning flashing state distinct from the normal lighting state and limits the output of the heating unit (130).

[0077] And, the system further includes a bed auxiliary air conditioning unit positioned at the bottom or side of the bed to supply warm or cold air to the interior space of the bed, the lower space, or the interior space of the bedding, and the bed auxiliary air conditioning unit includes an air conditioning heat source unit positioned at any one of the bottom of the bed (B), the side of the bed, the headboard, the bedroom floor, or a movable case; a bed under air passage (910) that guides warm or cold air generated or recovered from the air conditioning heat source unit to the bottom of the bed (B); an outer discharge unit (920) positioned in the outer area of ​​the electric heating pad unit (100) to discharge warm or cold air delivered through the bed under air passage (910) toward the upper surface of the bed or toward the interior of the bedding; an outer distribution duct connecting the bed under air passage (910) and the outer discharge unit (920); and an outer air volume control damper that controls the air volume or discharge direction of the air supplied to the outer discharge unit (920).

[0078] The electric heating pad (100) is positioned in the center of the upper surface of the bed (B), and the outer discharge unit (920) is positioned in at least one of the left outer, right outer, upper outer, or lower outer of the electric heating pad (100), so that the central contact heating area of ​​the electric heating pad (100) and the air control area of ​​the outer discharge unit (920) are separated from each other. The integrated control unit (700) controls the heating operation of the electric heating pad (100) and at least one of the warm air supply, cold air supply, dehumidification supply, or bedding drying operation of the bed auxiliary air conditioning unit in conjunction, and is characterized by controlling the central contact heating of the electric heating pad (100) and the air control of the outer discharge unit (920) so that they do not cause overlapping overheating or condensation based on the temperature inside the bed, humidity inside the bed, surface temperature of the heating pad, the user's sleep state, and whether the deep sleep mode is input of the portable controller (360).

[0081] And, the air conditioning heat source unit of the above-mentioned bed auxiliary air conditioning unit includes a heat pump device (400), and the heat pump device (400) includes a compressor (13) that compresses and discharges refrigerant, a condenser (14) that functions as a bed air conditioning condensation heat exchanger that transfers the condensation heat of the refrigerant discharged from the compressor (13) to a water circulation cycle (50), a cooling / dehumidification evaporator (15) that evaporates the refrigerant during cooling or dehumidification operation to cool or dehumidify the air inside the bed or the air inside the bedding, an outdoor unit (16) as an outdoor heat exchanger that functions as an evaporator during heating operation and functions as a condenser during cooling or dehumidification operation, a heating expansion valve (17) that reduces the pressure of the refrigerant during heating operation, a cooling expansion valve (18) that reduces the pressure of the refrigerant during cooling or dehumidification operation, an accumulator (19) that separates the refrigerant into gaseous refrigerant and liquid refrigerant, a high-pressure flow path (20a) through which high-pressure refrigerant flows, and a low-pressure refrigerant flow path The device includes an internal heat exchanger (20) that exchanges heat between the high-pressure refrigerant and the low-pressure refrigerant by providing a low-pressure path (20b), a refrigerant path changing unit that changes the refrigerant flow path between cooling operation and heating operation, a water circulation cycle (50) that exchanges heat with the condenser (14), and a control device that controls the refrigerant flow path of the heat pump device (400) and the air supply path of the bed auxiliary air conditioning unit, wherein the refrigerant path changing unit includes at least one of a high-pressure control valve (21) for cooling, a high-pressure control valve (22) for heating, a low-pressure control valve (23) for heating, a flow rate adjustment unit (24) that regulates the refrigerant flow rate, and a check valve (25) that prevents refrigerant backflow.

[0082] The above water circulation cycle (50) includes a liquid passage (51) that receives condensation heat from the condenser (14), a heating unit (52) that heats water or a heat medium circulating through the liquid passage (51), and a heat exchanger (53) that exchanges heat between the heat medium passing through the heating unit (52) or the liquid passage (51) and air.

[0084] The above radiator (53) is configured to be placed in an air passage communicating with the lower air passage (910) or the outer discharge part (920) to supply warmth to the bed or bedding interior space.

[0085] During heating operation, the heat pump device (400) forms a heating refrigerant flow path that sequentially includes the compressor (13), the condenser (14), the high-pressure path (20a) of the internal heat exchanger (20), the heating expansion valve (17), the outdoor unit (16) which functions as an evaporator during heating operation, the accumulator (19), the low-pressure path (20b) of the internal heat exchanger (20), and the compressor (13).

[0086] The condensation heat recovered from the condenser (14) is supplied to the lower space of the bed or the internal space of the bedding through the water circulation cycle (50), the heating unit (52), the radiator (53), the lower air passage (910) and the outer discharge unit (920).

[0090] And, the heat pump device (400) further includes a composite heat source supply unit (800) for supplying at least one of solar heat, geothermal energy, residual heat of the electric heating pad unit (100), heat storage of the heat storage layer (150), or waste heat within the bed to the heat source side of the heating unit (52) or the outdoor unit (16) which functions as an evaporator during heating operation;

[0092] The above combined heat source supply unit (800) is a solar heat supply unit comprising a solar heat collector (481), a solar heat storage tank (482), a solar heat circulation pump (483), and a solar heat side heat exchanger (484);

[0094] It includes a geothermal supply unit comprising a ground heat exchange pipe (471), a geothermal circulation pump (472), a geothermal heat exchanger (473), and a geothermal flow control valve (474), and an electric heating pad recovery heat supply unit (495) that supplies heat recovered from the lower area of ​​the electric heating pad unit (100), the heat storage layer (150), the air passage under the bed (910), or the air inside the bed to the heat source side of the heating unit (52) or the outdoor unit (16);

[0095] The above electric heating pad heat recovery supply unit (495) includes at least one of a heat recovery suction duct (496), a heat recovery opening / closing damper (497), a heat recovery temperature sensor (498), a heat recovery heat exchanger, and a heat recovery circulation fan or a heat recovery circulation pump.

[0096] The above combined heat source supply unit (800) includes a first auxiliary heat source path that directly supplies heat supplied from the solar heat supply unit, geothermal heat supply unit and electric heating pad recovery heat supply unit (495) to the heating unit (52), and a second auxiliary heat source path that supplies heat to the outside air intake side, outside air passage side, or area adjacent to the outdoor unit heat exchange fin of the outdoor unit (16) during heating operation.

[0097] The above integrated control unit (700) controls the opening and closing state or flow rate of the first auxiliary heat source path and the second auxiliary heat source path based on at least one of the solar heat storage temperature, the underground heat source temperature, the electric heating pad recovery heat temperature, the outdoor temperature, the air temperature at the inlet side of the outdoor unit (16), the evaporation pressure, the compressor suction superheat, and the heat medium temperature at the outlet side of the condenser, thereby performing auxiliary heating of the heating unit (52) or the water circulation cycle (50) by the heat supplied through the first auxiliary heat source path, and during heating operation, increases the evaporation temperature or evaporation pressure of the outdoor unit (16) and reduces the compression ratio of the compressor (13) to improve the heating efficiency of the heat pump device (400) by the heat supplied through the second auxiliary heat source path.

[0100] And, the heat pump device (400) forms a cooling / dehumidifying refrigerant flow path that sequentially includes the compressor (13), the outdoor unit (16), the high-pressure path (20a) of the internal heat exchanger (20), the cooling expansion valve (18), the evaporator (15), the accumulator (19), the low-pressure path (20b) of the internal heat exchanger (20), and the compressor (13) during cooling or dehumidifying operation, and the evaporator (15) is configured to be placed in an air passage that sucks in air inside the bed or bedroom air to cool or dehumidify the air inside the bed or bedroom air, and the bed auxiliary air conditioning unit comprises a cold air supply fan that supplies the cooling or dehumidifying air passing through the evaporator (15) to the bed under air passage (910) and the outer discharge unit (920), a dehumidifying water discharge unit that discharges condensate generated in the evaporator (15), and the outer It includes an outer airflow control damper that controls the airflow or discharge direction of the discharge unit (920), and the integrated control unit (700) finely energizes the heating unit (130) so that the difference between the surface temperature of the floor mat and the dew point inside the bed is greater than or equal to a safe temperature difference of 1°C to 5°C without completely cutting off the heating unit (130) of the electric floor mat unit (100) during the cooling and dehumidification operation based on at least one of the humidity inside the bed, the floor mat surface temperature, the indoor temperature and humidity, and the dew point inside the bed, and by correcting together at least one of the rotational speed of the compressor (13), the opening degree of the cooling expansion valve (18), the opening degree of the flow rate adjustment unit (24), the airflow volume of the cold air supply fan, and the fine energization duty ratio of the heating unit (130), thereby preventing condensation from occurring on the surface of the electric floor mat unit (100), the inner insulation layer, or the outer surface of the outer sheathing tube (77) while performing dehumidification inside the bed. It is characterized by inhibiting.

[0102] And, the heat pump device (400) is configured to transfer the condensation heat generated in the condenser (14) during heating operation to the liquid flow path (51) of the water circulation cycle (50), and the water or heat medium passing through the liquid flow path (51) is configured to supply heat to at least one of the bed under air passage (910), the outer discharge section (920), the heat storage layer heat exchange path, or the bedding drying path while circulating the heating section (52) and the radiator (53). The heat storage layer heat exchange path is configured as an indirect heat exchange path that circulates water, an auxiliary heat medium, or air of the water circulation cycle (50) without directly supplying refrigerant to the heat storage layer (150) of the electric heating pad section (100).

[0103] When the user's sleep state is determined to be a state before entering sleep, the integrated control unit (700) preheats the electric heating pad unit (100), the heat storage layer (150), the air passage under the bed (910), or the outer discharge unit (920) using at least one of the condensation heat of the condenser (14), the heat storage of the solar heat supply unit, the underground heat of the geothermal heat supply unit, or the recovered heat of the electric heating pad recovery heat supply unit (495); when the user's sleep state is determined to be a state of deep sleep, it maintains the supply of low-airflow warm air through the radiator (53) while reducing the resistance heating output of the heating unit (130); and when the user's sleep state is determined to be a state after waking up, it supplies air for drying bedding using the condensation heat of the condenser (14) while suppressing the high-temperature heating operation of the electric heating pad unit (100).

[0104] The integrated control unit (700) is characterized by controlling the heat pump condensation heat and electric heating pad heating heat so that if the amount of heat recovered by the condenser (14) or the amount of heat supplied by the composite heat source supply unit (800) is greater than or equal to the reference amount of heat, the duty cycle or target temperature of the heating unit (130) is lowered to prevent overheating.

[0106] Hereinafter, the overall mechanism and preferred embodiments of a grounded, sleep-inducing thermal-based temperature control system for improving sleep quality according to the present invention will be described in detail with reference to the attached drawings.

[0108] However, the embodiments described below are examples for specifically explaining the technical concept of the present invention, and the scope of the present invention is not limited thereto, but is determined by the configurations and equivalents described in the claims.

[0109] As illustrated in FIG. 1, the present invention comprises an electric heating pad (100) positioned in the center of the bed corresponding to the lower central part of the user's body on the upper surface of the bed (B), particularly the bed; a grounding shielding part (120) provided in the electric heating pad (100) to shield electromagnetic waves or induce leakage current to the ground side; a portable controller (360) for setting the heating temperature and operating time of the electric heating pad (100); an environment sensor part (200) for detecting at least one of the temperature inside the bed, humidity inside the bed, surface temperature of the electric heating pad, and indoor temperature and humidity; a sleep state detection part (300) for determining the user's sleep state based on at least one of the user's body movement, pressure distribution, heart rate, and respiration; and an integrated control part (700) for controlling the heating operation of the electric heating pad (100) based on the setting value of the portable controller (360), the detection value of the environment sensor part (200), and the determination value of the sleep state detection part (300).

[0111] The core of the present invention is that the electric heating pad (100) is not used as a simple resistance heating device, but rather the electrical safety control by the grounding shielding unit (120), the detection of the bed environment by the environment sensor unit (200), the determination of the user state by the sleep state detection unit (300), the user input by the portable controller (360), and the determination of the control priority by the integrated control unit (700) are combined into a single closed-loop control system.

[0112] That is, in the present invention, the heating of the electric heating pad (100) is not mechanically controlled by only following the temperature or time input by the user, but is also controlled by considering whether the user has actually fallen asleep, entered deep sleep, increased tossing and turning, increased risk of condensation due to high humidity in the bed, and whether the grounding condition or leakage current condition is normal.

[0113] Accordingly, unlike conventional simple heating mats, simple earthing mats, or simple bed air conditioning devices, the present invention can simultaneously achieve thermal comfort, electrical safety, condensation suppression, and energy efficiency with a single control logic.

[0114] Referring to FIG. 1, the electric heating pad (100) does not need to be configured to heat the entire upper surface of the bed (B), but can be positioned in the center of the bed corresponding to the lower central part of the user's body, such as the back, waist, pelvis, and thighs. This positioning concentrates the heating area in the central part where the user's body weight load and contact heat transfer occur most significantly, thereby increasing heating efficiency, while also allowing it to be functionally separated from the outer air control areas formed on the left outer, right outer, upper outer, or lower outer part of the bed (B).

[0115] The integrated control unit (700) may independently perform contact heating operation, grounding safety operation, and sleep state-linked heating operation of the electric heating pad unit (100), or may perform them in conjunction with each other as needed. For example, when a user inputs a set temperature and operating time through a portable controller (360), the integrated control unit (700) uses the input values ​​as basic target values, but automatically corrects at least one of the target temperature, heating output, power supply duty ratio, remaining operating time, and safety cutoff conditions by considering together the temperature inside the bed, humidity inside the bed, surface temperature of the electric heating pad unit, and indoor temperature and humidity detected by the environment sensor unit (200), and any one of the states determined by the sleep state detection unit (300): pre-sleep state, sleep state, deep sleep state, light sleep state, increased tossing and turning state, pre-awakening state, and post-waking state. This control reflects the actual usage environment in which a user cannot repeatedly operate the temperature button while sleeping, and has technical significance in that the system interprets changes in biosignals and bed environment occurring in the user's unconscious state and actively changes the heating conditions.

[0117] Referring to FIG. 2, the electric heating pad (100) has a structure in which an upper cover layer (111), a temperature distribution control layer (140), a first shielding electrode (121) of a grounded shielding part (120), a heating part (130), a condensation blocking insulation layer (160), a heat storage layer (150), a second shielding electrode (122) of a grounded shielding part (120), and a lower insulation layer (112) are functionally stacked.

[0119] The upper cover layer (111) may be formed as a skin-contact fiber layer that comes into direct contact with the user's body or bedding, and may be formed as an upper cover layer composition comprising lyocell fibers, regenerated polyester fibers, nylon-based abrasion-resistant fibers, polyurethane-based elastic fibers, ceramic-based far-infrared radiation particles, silver-zinc-based antibacterial particles, and silica-based moisture-absorbing particles.

[0120] This upper cover layer (111) is not merely an outer layer, but is the top layer that comes into contact with the skin or bedding for a long time during sleep, and is responsible for tactile sensation, moisture absorption, abrasion resistance, antibacterial properties, and perceived thermal properties.

[0121] The temperature distribution control layer (140) performs the function of diffusing heat generated from the heating element (130) in a planar direction including the length and width directions of the electric heating element (100). In particular, the temperature distribution control layer (140) may be formed as a triple functional layer in which a planar heat diffusion layer comprising a graphite sheet or a carbon fiber nonwoven fabric, an insulating heat conductive layer comprising at least one electrically insulating ceramic filler among boron nitride, alumina, and magnesium oxide, and a heat storage and heat dissipation layer comprising a microencapsulated phase change material are sequentially stacked.

[0122] Accordingly, local heat generated at a specific point of the heating element (130) is dispersed in a planar direction, electrical insulation is maintained, and a rapid rise or fall in surface temperature is mitigated. This layer structure is distinguished from conventional single heat-conducting sheets or single cushion layers in that it does not merely add a “layer that conducts heat well,” but rather divides different physical functions such as heat diffusion, insulating heat conduction, and heat storage / complete heat dissipation.

[0123] The grounding type shielding part (120) may include a first shielding electrode (121), a second shielding electrode (122), and a grounding wire. The first shielding electrode (121) is positioned between the temperature distribution control layer (140) and the heating part (130) to shield electromagnetic waves or electric field components that may be transmitted from the heating part (130) toward the user's body, and to guide leakage current or electrostatic components toward the ground. The second shielding electrode (122) is positioned below the heat storage layer (150) to additionally shield electrical components that may leak toward the lower direction of the heating part (130) or to guide them toward the ground. It is preferable that the first shielding electrode (121) and the second shielding electrode (122) are not directly conductive with the heating part (130), but are connected to a grounding terminal through a grounding wire while being electrically insulated from the heating part (130).

[0124] This structure separates the current path of the heating core and the ground path of the shielding electrode, so that the heating function and the shielding function do not interfere with each other. The first shielding electrode (121) may be formed from a conductive shielding composition comprising copper powder or copper flakes, silver-coated copper powder, nickel powder or nickel-coated carbon fiber, graphite powder or graphene nanoplatelets, conductive carbon black or carbon nanotubes, a polyurethane-based or silicone-based elastic binder, and a halogen-free flame retardant.

[0125] In this case, the metal-based conductive component provides electromagnetic shielding and grounding induction performance, the carbon-based conductive component suppresses the rapid disconnection of the conductive network even during repeated bending, and the elastic binder ensures durability against folding and repeated loading of the electric heating pad (100). Therefore, the grounding shielding part (120) can be understood not merely as a structure with a metal thin film inserted, but as a long-term contact safety structure for beds that considers flexibility, shielding, grounding, and flame retardancy together.

[0126] Referring to FIG. 3, the heating unit (130) includes a heating means (70), and the heating means (70) may include a heating core (71) made of a plurality of carbon fiber strands, a fluoropolymer core tube (72) that wraps around the outer circumference of the heating core (71) to insulate it, a carbon fiber reinforcing yarn (73) that is wound around the outer circumference of the core tube (72) to increase durability, an inner covering tube (74) made of PVC material that accommodates the carbon fiber reinforcing yarn (73) inside, a copper outer covering tube (75) that accommodates the inner covering tube (74) inside, an aluminum foil (76) that is wound around the outer circumference of the copper outer covering tube (75), and an outer covering tube (77) that accommodates the aluminum foil (76) inside.

[0127] The heating core (71) is a practical heating element that generates Joule heat when current is applied, and the core tube (72) ensures the insulation of the heating core (71). The carbon fiber reinforcing yarn (73) prevents the core tube (72) from being damaged by repeated bending or weight load, and the inner cladding tube (74) performs mechanical buffering and insulation auxiliary functions between the heating core (71) and the outer metal layer. The copper outer tube (75) and the aluminum foil (76) can be selectively electrically connected to at least one of the ground wire, the first shielding electrode (121), or the second shielding electrode (122) of the grounded shielding part (120) while being electrically insulated from the heating core (71), and in this case, they function as an auxiliary shielding layer. That is, the heating means (70) may not only place a metal outer tube and a metal foil on the outside of the heating core (71) as a simple protective layer, but may also form an auxiliary shielding path that is selectively linked with the grounded shielding part (120). The outer tube (77) serves as the outermost coating layer of the heating means (70) and suppresses wear caused by repeated loading and folding, moisture penetration, and degradation of insulation. In particular, the outer tube (77) may be formed from an antibacterial and eco-friendly durable coating composition comprising a bio-based thermoplastic polyurethane elastomer, a low-volatility silicone elastomer, a halogen-free phosphorus-based flame retardant, a halogen-free nitrogen-based flame retardant, magnesium hydroxide, aluminum hydroxide, epoxidized vegetable oil or a bio-based polyester plasticizer, silver-zinc-based antibacterial glass powder or zinc-based antibacterial ceramic powder, and an anti-wear and reinforcing filler. This outer covering tube (77) is structured to simultaneously address issues such as odor, hardening of the covering, repeated folding, moisture penetration, reduced antibacterial properties, and flame retardancy, which are particularly problematic in bed products, and provides durability and safety that are distinguished from simple PVC-covered heating wires.

[0128] The condensation-blocking insulating layer (160) is positioned below the heating element (130) to suppress moisture penetration and condensation, while simultaneously maintaining insulation. The condensation-blocking insulating layer (160) may be formed from a moisture-proof and insulating composition comprising a silicone-based or polyurethane-based insulating elastic resin, at least one insulating thermal conductive filler selected from alumina, boron nitride, or magnesium oxide, a silica or zeolite-based moisture-absorbing filler, a fluorine-based or silane-based water-repellent additive, a halogen-free flame retardant, and a dispersant or coupling agent.

[0129] This layer performs a particularly important function not only when the electric heating pad (100) performs only simple heating, but also when combined with the cooling and dehumidification operation described later. In cooling or dehumidification operation, the temperature of the air inside the bed may decrease and the relative humidity may increase, and if the difference between the surface temperature of the heating pad and the dew point inside the bed decreases, there is a possibility that condensation may occur on the surface of the electric heating pad (100), the inner insulation layer, or the outer surface of the outer covering tube (77).

[0130] The condensation-blocking insulation layer (160) prevents such moisture condensation from lowering the electrical stability of the heating element (130) or the grounded shielding element (120). The heat storage layer (150) is a layer that temporarily stores or gradually releases heat from the heating element (130) and may be formed from a heat storage composition including a silicone-based or polyurethane-based elastic resin, a microencapsulated phase change material, ceramic heat storage particles, a carbon-based thermal conductive filler, a flame retardant, and a coupling agent. Even if the integrated control unit (700) lowers the power supply duty ratio of the heating element (130) while in a deep sleep state, the heat storage layer (150) gradually releases the stored heat so that the user does not feel a sudden cold sensation. Therefore, the heat storage layer (150) functions not as a simple energy storage layer, but as a buffer element that balances power saving and maintaining perceived warmth in sleep state-linked control. The lower insulation layer (112) is positioned below the second shielding electrode (122) to reduce downward heat loss and to efficiently transfer heat from the heating element (130) toward the user's body or toward the inside of the bed.

[0132] Referring to FIG. 4, the portable controller (360) may include a temperature display window (361), a time display window (362), a sleep mode button (363), an electromagnetic wave attenuation button (364), a temperature increase button (365), a temperature decrease button (366), a time increase button (367), a time decrease button (368), a sleep mode indicator lamp (369), and an electromagnetic wave attenuation indicator lamp (370).

[0133] The temperature display window (361) displays the set temperature or the current control temperature as a number, and the time display window (362) displays the set operating time or the remaining operating time as a number. When the user inputs the deep sleep mode button (363), the integrated control unit (700) lights up or flashes the deep sleep mode indicator lamp (369) and converts the set temperature of the temperature display window (361) and the set operating time of the time display window (362) into a deep sleep mode temperature and time profile. At this time, the deep sleep mode temperature and time profile may be composed of a multi-stage thermal control profile including at least one of a preheating section before entering sleep, a cooling section after estimating entry into sleep, a deep sleep maintenance section, a section responding to increased tossing and turning, and a gradual heating section before waking up, as shown in FIG. 5. In the preheating section before entering sleep, the surface temperature of the electric heating pad (100) is raised to a certain level while the user is judged to be in a state before entering the bed or before entering sleep, thereby alleviating the initial cold sensation.

[0134] In the temperature reduction section after sleep onset estimation, if sleep onset is estimated by the reduction in body movement, stabilization of pressure distribution, change in heart rate, or change in respiration of the sleep state detection unit (300), the integrated control unit (700) lowers the target temperature or power duty ratio of the heating unit (130) to suppress excessive heat and stuffiness. In the deep sleep maintenance section, the temperature fluctuation range is reduced by utilizing the low-output operation of the heating unit (130) or the heat dissipation characteristics of the heat storage layer (150). In the section responding to increased tossing and turning, if the sleep state detection unit (300) detects increased tossing and turning, the integrated control unit (700) determines the floor mat surface temperature, the temperature inside the bed, and the humidity inside the bed together, and corrects the heat output, the air volume of the outer discharge unit (920), or the dehumidification operation according to whether the cause of the tossing and turning is local overheating, a perceived temperature imbalance, or an increase in humidity.

[0135] In the gradual temperature rise section before waking up, when the scheduled time to wake up or the user's state before waking up is detected, the target temperature of the electric heating pad (100) is gradually raised without a rapid temperature rise to reduce the cold sensation and increase the perceived comfort just before waking up.

[0136] When the electromagnetic wave attenuation button (364) is input, the integrated control unit (700) may connect the shielding electrode of the grounded shielding unit (120) to the grounding terminal, or switch at least one of the current waveform, current phase, current duty ratio, or zero-crossing switching timing of the heating unit (130) to an electromagnetic wave reduction condition. At this time, the electromagnetic wave attenuation indicator lamp (370) indicates whether the electromagnetic wave attenuation button (364) is input or whether the grounded shielding unit (120) is activated. In addition, if a grounding abnormality, leakage current abnormality, or insulation resistance decrease is detected, the integrated control unit (700) may display the electromagnetic wave attenuation indicator lamp (370) in a warning flashing state distinct from the normal lighting state, and limit the output of the heating unit (130) or execute a safety cutoff condition. This control is related to the condensation prevention, electromagnetic wave attenuation, and safety cutoff cooperative control flow illustrated in FIG. 11. That is, in the present invention, the grounding state or electromagnetic wave attenuation state of the grounding type shielding part (120) is not simply left in a manual connection state, but is linked to the operation state of the portable controller (360), the detection value of the environment sensor part (200), and the safety judgment result of the integrated control part (700). Therefore, the user can intuitively recognize the current operating state and abnormal state through the lighting or flashing state of the sleep mode indicator lamp (369) and the electromagnetic wave attenuation indicator lamp (370) without having to directly judge the complex electrical state.

[0138] Referring to FIG. 6, the present invention may further include a bed auxiliary air conditioning unit positioned at the bottom or side of the bed to supply warm or cold air to the interior space of the bed, the lower space, or the interior space of the bedding. The bed auxiliary air conditioning unit may include an air conditioning heat source unit, a bed under air passage (910), an outer discharge unit (920), an outer distribution duct, and an outer air volume control damper. The air conditioning heat source unit may be positioned at any one of the bottom of the bed (B), the side of the bed, the headboard, the bedroom floor, or a movable case, and guides the generated or recovered warm or cold air to the bottom of the bed (B) through the bed under air passage (910).

[0139] The outer discharge unit (920) is positioned on at least one of the left outer, right outer, upper outer, or lower outer of the electric heating unit (100) to discharge warm air, cold air, dehumidified air, or dry air transmitted through the air passage (910) under the bed toward the upper surface of the bed or toward the interior of the bedding. An important point in the present invention is that the central contact heating area of ​​the electric heating unit (100) and the air control area of ​​the outer discharge unit (920) are separated from each other. The electric heating unit (100) provides direct contact heat to the lower central part of the user's body, and the outer discharge unit (920) distributes warm air, cold air, or dehumidified air to the outer part of the bed or the interior space of the bedding. Accordingly, it is not necessary to excessively heat the entire bed with a single electric heating unit (100), and complex comfort control is possible by providing stable contact heat to the central part and air control to the outer part. The integrated control unit (700) controls the heating operation of the electric heating pad unit (100) and at least one of the warm air supply, cold air supply, dehumidification supply, or bedding drying operation of the bed auxiliary air conditioning unit in conjunction. For example, if the temperature inside the bed is low and the user is in a state before entering sleep, the integrated control unit (700) can simultaneously preheat the electric heating pad unit (100) and supply low-airflow warm air from the outer discharge unit (920). Conversely, if the humidity inside the bed is high and the surface temperature of the heating pad approaches the dew point, the integrated control unit (700) can suppress condensation by increasing the supply of dehumidifying air through the outer discharge unit (920) while simultaneously micro-conducting the heating unit (130).

[0141] Referring to FIGS. 7 and FIGS. 10, the air conditioning heat source of the bed auxiliary air conditioning unit may include a heat pump device (400).

[0142] The heat pump device (400) comprises a compressor (13) that compresses and discharges refrigerant, a condenser (14) that functions as a condensation heat exchanger for bed air conditioning that transfers the condensation heat of the refrigerant discharged from the compressor (13) to a water circulation cycle (50), a cooling / dehumidification evaporator (15) that evaporates the refrigerant during cooling or dehumidification operation to cool or dehumidify the air inside the bed or the air inside the bedding, an outdoor unit (16) that functions as an evaporator during heating operation and as a condenser during cooling or dehumidification operation as an outdoor heat exchanger, a heating expansion valve (17) that reduces the pressure of the refrigerant during heating operation, a cooling expansion valve (18) that reduces the pressure of the refrigerant during cooling or dehumidification operation, an accumulator (19) that separates the refrigerant into gaseous refrigerant and liquid refrigerant, an internal heat exchanger (20) that has a high-pressure path (20a) through which high-pressure refrigerant flows and a low-pressure path (20b) through which low-pressure refrigerant flows, and a refrigerant between cooling operation and heating operation. It may include a refrigerant flow path changing section that changes the flow path, a water circulation cycle (50) that exchanges heat with a condenser (14), and a control device that controls the refrigerant flow path of the heat pump device (400) and the air supply path of the bed auxiliary air conditioning section.

[0143] The refrigerant flow path changing section may include at least one of a high-pressure control valve (21) for cooling, a high-pressure control valve (22) for heating, a low-pressure control valve (23) for heating, a flow rate adjustment section (24) for controlling the refrigerant flow rate, and a check valve (25) for preventing refrigerant backflow.

[0144] The water circulation cycle (50) may include a liquid passage (51) that receives condensation heat from a condenser (14), a heating section (52) that heats water or a heat medium circulating through the liquid passage (51), and a heat exchanger (53) that exchanges heat between the heat medium and air that has passed through the heating section (52) or the liquid passage (51).

[0145] The radiator (53) is placed in an air passage connected to the lower air passage (910) or the outer discharge part (920) to supply warmth to the bed or the interior space of the bedding.

[0146] During heating operation, the heat pump device (400) can form a heating refrigerant flow path that sequentially includes a compressor (13), a condenser (14), a high-pressure path (20a) of an internal heat exchanger (20), a heating expansion valve (17), an outdoor unit (16) that functions as an evaporator during heating operation, an accumulator (19), a low-pressure path (20b) of an internal heat exchanger (20), and a compressor (13). At this time, the condensation heat recovered from the condenser (14) is supplied to the lower space of the bed or the internal space of the bedding through a water circulation cycle (50), a heating unit (52), a radiator (53), an air passage under the bed (910), and an outer discharge unit (920). This structure allows for the simultaneous use of direct resistance heating by the heating element (130) of the electric heating pad (100) and condensation heat of the heat pump device (400), thereby providing the same perceived warmth while reducing the duty cycle of the heating element (130).

[0147] Referring to FIG. 8 and FIG. 10, during cooling or dehumidification operation, the heat pump device (400) can form a cooling / dehumidification refrigerant flow path that sequentially includes a compressor (13), an outdoor unit (16), a high-pressure path (20a) of an internal heat exchanger (20), a cooling expansion valve (18), an evaporator (15), an accumulator (19), a low-pressure path (20b) of an internal heat exchanger (20), and a compressor (13).

[0148] In this case, the evaporator (15) is positioned in an air passage that draws in air inside the bed or bedroom air to cool or dehumidify the air inside the bed or bedding. The bed auxiliary air conditioning unit may include a cold air supply fan that supplies the cooled or dehumidified air passing through the evaporator (15) to the lower bed air passage (910) and the outer discharge unit (920), a dehumidifying water discharge unit that discharges condensate generated in the evaporator (15), and an outer air volume control damper that controls the air volume or discharge direction of the outer discharge unit (920). The progressive feature of the present invention in the cooling and dehumidification operation is that it does not completely block the heating element (130) of the electric heating pad unit (100) while cooling the air inside the bed for dehumidification. The integrated control unit (700) can finely power the heating unit (130) based on at least one of humidity inside the bed, floor mat surface temperature, indoor temperature and humidity, and dew point inside the bed, such that the difference between the floor mat surface temperature and the dew point inside the bed is greater than or equal to a safe temperature difference. In one embodiment of the claim, the safe temperature difference may be set to 1°C to 5°C. At this time, the integrated control unit (700) corrects at least one of the rotational speed of the compressor (13), the opening degree of the cooling expansion valve (18), the opening degree of the flow rate adjustment unit (24), the airflow volume of the cold air supply fan, and the fine power duty ratio of the heating unit (130). Accordingly, the present invention does not view cooling / dehumidification operation and electric floor mat heating as contradictory to each other, and utilizes fine heating to suppress condensation during dehumidification as a control variable. This is a practical safety mechanism that suppresses condensation from occurring on the surface of the electric heating pad (100), the inner insulation layer, or the outer surface of the outer covering tube (77) while maintaining the dehumidification effect within the bed.

[0150] Referring to FIG. 9 and FIG. 10, the heat pump device (400) may further include a composite heat source supply unit (800) for supplying at least one of solar heat, geothermal energy, residual heat of the electric heating pad unit (100), heat storage of the heat storage layer (150), or waste heat within the bed to the heat source side of the heating unit (52) or the outdoor unit (16) which functions as an evaporator during heating operation. The combined heat source supply unit (800) may include a solar heat supply unit comprising a solar heat collector (481), a solar heat storage tank (482), a solar heat circulation pump (483), and a solar heat side heat exchanger (484); a geothermal heat supply unit comprising a ground heat exchange pipe (471), a geothermal heat circulation pump (472), a geothermal heat exchanger (473), and a geothermal flow control valve (474); and an electric heating pad recovery heat supply unit (495) that supplies heat recovered from the lower area of ​​the electric heating pad unit (100), the heat storage layer (150), the air passage under the bed (910), or the air inside the bed to the heat source side of the heating unit (52) or the outdoor unit (16).

[0151] The electric heating pad heat recovery supply unit (495) may include at least one of a heat recovery suction duct (496), a heat recovery opening / closing damper (497), a heat recovery temperature sensor (498), a heat recovery heat exchanger, and a heat recovery circulation fan or a heat recovery circulation pump.

[0152] The combined heat source supply unit (800) may include a first auxiliary heat source path that directly supplies heat supplied from the solar heat supply unit, the geothermal heat supply unit, and the electric heating pad recovery heat supply unit (495) to the heating unit (52), and a second auxiliary heat source path that supplies heat to the outdoor air intake side, the outdoor air passage side, or the area adjacent to the outdoor unit heat exchange fins of the outdoor unit (16) during heating operation. The integrated control unit (700) controls the opening / closing state or flow rate of the first auxiliary heat source path and the second auxiliary heat source path based on at least one of the solar heat storage temperature, the underground heat source temperature, the electric heating pad recovery heat temperature, the outdoor temperature, the air temperature at the inlet side of the outdoor unit (16), the evaporation pressure, the compressor intake superheat, and the heat medium temperature at the outlet side of the condenser. The first auxiliary heat source path is used for auxiliary heating of the heating unit (52) or the water circulation cycle (50), and the second auxiliary heat source path is used to increase the evaporation temperature or evaporation pressure of the outdoor unit (16) during heating operation.

[0153] Accordingly, the compression ratio of the compressor (13) is reduced, and the heating efficiency of the heat pump device (400) can be improved. This combined heat source control is not merely a structure that adds external auxiliary heat sources in parallel, but has systemic integration in that it recovers residual heat generated or accumulated in the bed and selectively supplies it to the heat source side of the heat pump cycle or the heating side of the water circulation cycle (50).

[0154] In addition, the condensation heat of the heat pump device (400) shown in FIGS. 7 to 10 is combined with the bed under air passage (910) and outer discharge part (920) of FIG. 6 to mutually complementarily operate the contact heating of the electric heating pad part (100) and the air control of the bed auxiliary air conditioning part.

[0155] During heating operation, the condensation heat generated in the condenser (14) is transferred to the liquid passage (51) of the water circulation cycle (50), and the water or heat medium passing through the liquid passage (51) can supply heat to at least one of the bed under air passage (910), outer discharge section (920), heat storage layer heat exchange passage, or bedding drying passage while circulating through the heating section (52) and the radiator (53). At this time, it is preferable that the heat storage layer heat exchange passage be composed of an indirect heat exchange passage that circulates water, an auxiliary heat medium, or air of the water circulation cycle (50) without directly supplying refrigerant to the heat storage layer (150) of the electric heating pad section (100). This allows the heat storage layer (150) to be preheated or the heat dissipation characteristics to be assisted without directly transferring the risk of refrigerant leakage to the bed contact area. When the user's sleep state is determined to be a state prior to entering sleep, the integrated control unit (700) can preheat the electric heating pad unit (100), the heat storage layer (150), the air passage under the bed (910), or the outer discharge unit (920) using at least one of the condensation heat of the condenser (14), the heat storage of the solar heat supply unit, the underground heat of the geothermal heat supply unit, or the heat recovery of the electric heating pad recovery heat supply unit (495).

[0156] When the user's sleep state is determined to be a deep sleep state, the integrated control unit (700) can reduce the resistance heating output of the heating unit (130) while maintaining low-airflow warm air supply through the radiator (53). When the user's sleep state is determined to be a wake-up state, the integrated control unit (700) can supply air for drying bedding using the condensation heat of the condenser (14) while suppressing high-temperature heating operation of the electric heating pad unit (100). In addition, if the amount of heat recovered by the condenser (14) or the amount of heat supplied by the composite heat source supply unit (800) is greater than or equal to the reference amount of heat, the integrated control unit (700) lowers the power supply duty ratio or target temperature of the heating unit (130) so that the heat pump condensation heat and the electric heating pad heat do not cause overlapping overheating.

[0157] Referring to FIG. 11, the integrated control unit (700) calculates the dew point or condensation risk level within the bed from the detection value of the environment sensor unit (200), and calculates the time of the user's estimation of falling asleep, the time of increased tossing and turning, or the time before waking up from the judgment value of the sleep state detection unit (300), and based on this, determines whether to execute or the priority of control of at least one of a plurality of electric floor mat control modes including overheating prevention control, condensation prevention control, electromagnetic wave attenuation control, grounding state / leakage current safety control, and deep sleep thermal pattern control. For example, when the humidity within the bed is high and the difference between the floor mat surface temperature and the dew point within the bed decreases, the integrated control unit (700) can increase the priority of the condensation prevention control to perform micro-conduction of the heating unit (130), supply of dehumidifying air from the outer discharge unit (920), control of the airflow volume of the cold air supply fan, and correction of the opening degree of the cooling expansion valve (18). On the other hand, if a grounding abnormality, leakage current abnormality, or a decrease in insulation resistance is detected, regardless of whether the sleeping state is a pre-sleep state or a deep sleep state, the priority of the grounding state and leakage current safety control can be increased to limit the output of the heating unit (130) or execute safety cutoff conditions. In addition, if the sleeping state detection unit (300) determines an increased tossing and turning state and simultaneously the environment sensor unit (200) detects a local increase in the surface temperature of the floor mat or an increase in humidity inside the bed, the integrated control unit (700) can interpret the cause of the increased tossing and turning as overheating or humid heat discomfort and lower the heating output and current duty cycle or increase air circulation through the outer discharge unit (920).

[0158] As such, the present invention does not simply switch the operating mode based on a single sensor value or a single switch input, but dynamically determines the priority of the control mode by interpreting environmental detection values, biological or body movement-based sleep determination values, grounding safety status, and user setting values ​​together.

[0159] The operation of the present invention can be summarized as follows. When a user inputs a set temperature and a set operating time by operating the temperature increase button (365), temperature decrease button (366), time increase button (367), or time decrease button (368) of the portable controller (360) before going to sleep, the integrated control unit (700) displays the corresponding set values ​​on the temperature display window (361) and the time display window (362). When the user inputs the deep sleep mode button (363), the integrated control unit (700) turns on or flashes the deep sleep mode indicator lamp (369) and converts the basic set temperature and the set operating time into the multi-stage heat control profile of FIG. 5. In the preheating section before entering the bed, the heating element (130) is energized at a relatively high duty cycle to preheat the electric heating pad (100), and if necessary, the condensation heat of the heat pump device (400) or the auxiliary heat source of the composite heat source supply unit (800) preheats the internal space of the bedding through the air passage (910) under the bed and the outer discharge unit (920). When the entry into the bed is estimated, the integrated control unit (700) lowers the target temperature or the energization duty cycle of the heating element (130) according to the judgment value of the sleep state detection unit (300), and prevents a rapid drop in perceived temperature by utilizing the heat dissipation characteristics of the heat storage layer (150). In a deep sleep state, while reducing the direct heat output of the heating element (130), a stable thermal sensation is maintained through the supply of low-airflow warm air via the radiator (53) or the heat dissipation of the heat storage layer (150). When a state of increased tossing and turning occurs, the integrated control unit (700) does not simply raise the temperature, but rather determines which factor—overheating, humidity increase, or temperature imbalance—is greater by comprehensively considering the floor surface temperature, humidity inside the bed, dew point inside the bed, and the airflow of the outer discharge unit (920), and accordingly adjusts the operating conditions of the heating unit (130), cold air supply fan, outer airflow control damper, and heat pump device (400). In the pre-awakening state, rather than rapid high-temperature heating, a gradual increase in temperature is performed to increase the user's perceived comfort just before waking up.In the wake-up state, high-temperature heat generation is suppressed, and if necessary, moisture inside the bedding is removed by supplying air for drying the bedding using the condensation heat of the condenser (14) or the recovered heat of the combined heat source supply unit (800).

[0160] With this overall configuration and operation, the present invention has the electric heating pad section (100), grounded shielding section (120), portable controller (360), environment sensor section (200), sleep state detection section (300), and integrated control section (700) as the basic framework, and the multi-layer electric heating pad section structure of claim 2, the heating means (70) and outer covering tube (77) of claim 3, the portable controller (360) and deep sleep mode / electromagnetic wave attenuation operation structure of claim 4, the bed auxiliary air conditioning section of claim 5, and other inventions such as the heat pump device (400), water circulation cycle (50), composite heat source supply section (800), cooling / dehumidification operation and condensation suppression control, and condensation heat utilization preheating / low airflow warm air supply / bedding drying control are organically connected to each other.

[0161] Therefore, the present invention is not a simple set in which each component is independently combined in parallel, but rather a system in which multiple functions such as sleep state determination, bed environment detection, grounding safety monitoring, thermal control, condensation prevention, external air conditioning, utilization of heat pump condensation heat, and recovery of a composite heat source are mutually fed back to each other centered around an integrated control unit (700). Due to this interaction, the heat output of the electric heating pad unit (100) can be lowered to suit the sleep state and bed environment, and the lowered heat output is compensated by the heat storage layer (150), the condensation heat of the heat pump device (400), and the external air control of the bed auxiliary air conditioning unit. The risk of condensation that may occur during cooling and dehumidification operation is suppressed by a condensation-blocking insulation layer (160) and fine current control, and electromagnetic waves or leakage current that may occur during the current flow process of the heating unit (130) are guided to the ground side by a grounding shielding unit (120), a copper outer tube (75), an aluminum foil (76), and a grounding wire.

[0162] As a result, the present invention can provide a thermal environment suitable for the user's sleep stages while simultaneously ensuring electrical safety, bed hygiene, and energy efficiency.

[0163] Furthermore, the present invention combines the overall system configuration of FIG. 1, the laminated cross-sectional structure of the electric heating pad unit (100) of FIG. 2, the multilayer covering structure of the heating means (70) of FIG. 3, the user operation structure of the portable controller (360) of FIG. 4, the multi-stage thermal control profile of FIG. 5, the air supply structure of the bed auxiliary air conditioning unit of FIG. 6, the heating operation refrigerant flow path and heat transfer structure of the heat pump device (400) of FIG. 7, the cooling or dehumidification operation refrigerant flow path of the heat pump device (400) of FIG. 8, the solar, geothermal, and electric heating pad residual heat recovery structure of the composite heat source supply unit (800) of FIG. 9, the detailed configuration of the heat pump device (400) of FIG. 10, and the condensation prevention, electromagnetic wave attenuation, and safety cutoff cooperative control flow of FIG. 11 under a single inventive concept.

[0164] Even if there are electric heating pads, grounding wires, temperature sensors, sleep sensors, heat pumps, or dehumidification devices that can be individually known in the prior art, a structure in which these are divided into a central contact heating area and an outer air conditioning area of ​​the bed (B) as in the present invention, functionally stacking the heating layer, shielding layer, condensation blocking layer, and heat storage layer of the electric heating pad section (100), and the integrated control section (700) together interprets the judgment value of the sleep state detection section (300) and the dew point-based detection value of the environment sensor section (200), and links with the display and heating limit control of the portable controller (360) up to the electromagnetic wave attenuation state and leakage current safety state of the grounding type shielding section (120), and inputs the condensation heat of the heat pump device (400) and the solar heat, geothermal heat, and residual heat of the composite heat source supply section (800) into the heat control for each sleep stage, is difficult to derive through a simple design change.

[0165] The present invention functionally combines each component to reflect usage situations where the user cannot actively operate the device during sleep, problems with humidity and condensation occurring inside the bedding, electrical safety issues due to prolonged physical contact, problems with overheating and power consumption of electrical resistance heating, and the specific characteristics of a bed environment where both thermal sensation and air comfort are required simultaneously. Accordingly, the present invention provides a practical and organic thermal temperature control system for inducing deep sleep that can simultaneously achieve precise thermal control for each sleep stage, grounding safety, electromagnetic wave attenuation, condensation suppression, external air conditioning interoperability, and energy recovery efficiency, which conventional thermal mats have failed to solve.

[0167] Specific embodiments for each invention of this application are described below.

[0169] The first invention of the present invention relates to a basic invention of a grounded type sleep-inducing thermal temperature control system for improving the quality of sleep, and as shown in FIG. 1, it includes an electric heating pad (100) placed on a user's bed, a grounded shielding part (120) provided on the electric heating pad (100) to shield electromagnetic waves or induce leakage current to the ground side, a portable controller (360) for setting the heating temperature and operating time of the electric heating pad (100), an environment sensor part (200) for detecting at least one of the temperature inside the bed, humidity inside the bed, surface temperature of the electric heating pad, and indoor temperature and humidity, a sleep state detection part (300) for determining the user's sleep state based on at least one of the user's body movement, pressure distribution, heart rate, and respiration, and an integrated control part (700) for controlling the heating operation of the electric heating pad (100) based on the setting value of the portable controller (360), the detection value of the environment sensor part (200), and the determination value of the sleep state detection part (300).

[0170] In the first invention of the present invention, the bed includes a bed (B), and the electric heating pad (100) is positioned in the central part of the bed corresponding to the lower central part of the user's body on the upper surface of the bed (B). Positioning the electric heating pad (100) in the central part of the bed (B) in this manner is not merely a selection of an installation location, but has the technical significance of establishing the area where body weight load and contact heat transfer are concentrated, such as the user's back, waist, pelvis, and thighs during sleep, as the central control area.

[0171] That is, unlike the conventional simple electric heating pad method that uniformly heats the entire bed, the first invention is a sleep-specialized closed-loop thermal control system that provides heat centered on the user's actual contact area and continuously corrects the thermal state by an environment sensor unit (200), a sleep state detection unit (300), and an integrated control unit (700).

[0172] FIG. 1 is a schematic diagram showing the overall system configuration of the first invention of the present invention, showing that the electric heating pad unit (100), grounding shielding unit (120), environment sensor unit (200), sleep state detection unit (300), portable controller (360), and integrated control unit (700) are not simply arranged in parallel as independent components, but are configured to exchange information with each other within a single deep sleep induction control flow.

[0173] The portable controller (360) provides the integrated control unit (700) with the set temperature and operating time corresponding to the user's intention, the environment sensor unit (200) provides the integrated control unit (700) with physical environment values ​​such as the temperature inside the bed, humidity inside the bed, the surface temperature of the electric heating pad, and indoor temperature and humidity, and the sleep state detection unit (300) provides the integrated control unit (700) with sleep state determination values ​​based on the user's body movement, pressure distribution, heart rate, or respiration.

[0174] The integrated control unit (700) does not determine each of these input values ​​separately, but uses them as an integrated judgment element to determine together whether to execute and the control intensity of the contact heating operation of the electric heating pad unit (100), the grounding safety operation of the grounding shielding unit (120), and the heating operation linked to the sleep state.

[0175] Therefore, the first invention of the present invention is not merely a combination of an electric heating pad equipped with a temperature sensor, an earthing mat equipped with a grounding wire, or a bedding device with an added sleep sensor, but is a structure that mutually corrects the user's sleep state, bed environment, grounding safety status, and user setting value within a single control algorithm.

[0176] FIG. 2 is an example showing a laminated structure of an electric heating pad (100), and is a drawing to explain that the electric heating pad (100) of the first invention of the present invention may include a composite functional layer capable of performing contact heating, heat diffusion, electromagnetic shielding, condensation prevention, heat storage, and thermal insulation functions in stages, rather than being a simple heating sheet. Although the first invention of the present invention describes the electric heating pad (100) as a higher concept, according to the specific embodiment shown in FIG. 2, the electric heating pad (100) provides a comfortable contact sensation in the upper area that comes into contact with the user's body or bedding, performs stable heating in the internal heating area, and can induce electromagnetic waves or leakage current to the ground side in conjunction with a grounding shielding part (120).

[0177] At this time, the surface temperature of the electric heating pad (100) is detected by the environment sensor (200), and the integrated control unit (700) does not merely compare the surface temperature with the set temperature, but also analyzes it together with the temperature inside the bed, the humidity inside the bed, and the indoor temperature and humidity to determine the risk of overheating or condensation. Accordingly, the structure of the electric heating pad (100) of FIG. 2 supports the fact that the electric heating pad (100) of claim 1 is the control target that comes into closest contact with the user's body during sleep, and is the central configuration where the control of the grounded shielding unit (120), the environment sensor (200), and the integrated control unit (700) is concentrated.

[0178] FIG. 3 is a drawing showing a specific embodiment of a heating means that may be included in an electric heating pad (100), showing that the heating operation of the first invention of the present invention is not achieved solely by simple heating wire current flow, but can be linked to the safe operation of a grounded shielding part (120). The heating means illustrated in FIG. 3 may include a heating core, an insulating covering, a reinforcing layer, a metal shielding layer, or an outer covering layer, and such a structure can be understood as an embodiment that enhances the heating stability, durability against repeated bending, and electrical safety of the electric heating pad (100). In the first invention of the present invention, the integrated control unit (700) not only controls the heating output and current flow duty ratio of the electric heating pad (100), but also controls the grounding state or electromagnetic wave attenuation state of the grounded shielding part (120) in conjunction with the operation state of the portable controller (360). Accordingly, the heating means of FIG. 3 provides a structural basis in which the heating function and the shielding function can be physically separated yet functionally linked, and explains that the contact heating operation and grounding safety operation of the first invention of the present invention can be simultaneously implemented within a single device.

[0179] FIG. 4 is an example showing the front configuration of a portable controller (360), which demonstrates that a user can intuitively input a set temperature, operating time, sleep mode, or electromagnetic wave attenuation conditions. In the first invention, the portable controller (360) is not a simple temperature control switch, but an input interface that provides user intent to the integrated control unit (700). When a user sets the heating temperature and operating time through the portable controller (360), the integrated control unit (700) stores this as a basic control value. However, in the first invention, the setting value of the portable controller (360) is not an absolutely fixed value, but a reference value that can be automatically corrected by the detection value of the environment sensor unit (200) and the judgment value of the sleep state detection unit (300). For example, even if the user has set a high temperature, if the sleep state detection unit (300) determines the sleep state or deep sleep state and the environment sensor unit (200) detects an increase in the surface temperature of the electric heating pad or an excessive increase in the temperature inside the bed, the integrated control unit (700) lowers the target temperature, heating output, or power supply duty ratio to prevent overheating. Conversely, if the temperature inside the bed is low in the state before entering sleep, the integrated control unit (700) can control the electric heating pad (100) to actively preheat for a certain period of time. As such, the portable controller (360) of FIG. 4 is a starting point for inputting the user's intent, but the first invention of the present invention is distinguished from a conventional manual controller in that its setting value is actively reinterpreted based on the sleep state and bed environment.

[0180] FIG. 5 illustrates an example showing a multi-stage thermal control profile linked to a sleep state, and explains the operation of the integrated control unit (700) of the first invention of the present invention to automatically correct at least one of the target temperature, heating output, power supply duty ratio, remaining operating time, and safety cutoff condition of the electric heating pad unit (100) depending on whether the user's sleep state is determined to be a state before falling asleep, a state of falling asleep, a deep sleep state, a light sleep state, a state of increased tossing and turning, a state before waking up, and a state after waking up.

[0181] In the pre-sleep state, the heating output or target temperature of the electric heating pad (100) can be set relatively high so that the user does not feel an initial cold sensation when entering the bed. When the sleep state is determined, the integrated control unit (700) lowers the heating output or power supply duty ratio so that the user does not feel an overheating sensation or stuffiness after falling asleep.

[0182] In a deep sleep state, rapid temperature fluctuations can impede sleep continuity, so low power maintenance or gradual heat control may be performed. In a light sleep state or a state of increased tossing and turning, the integrated control unit (700) does not simply conclude that the cause of tossing and turning is a lack of temperature, but interprets the detection value of the environment sensor unit (200) together to determine whether there is overheating, increased humidity, or an imbalance in perceived temperature. In the pre-waking state, gradual temperature increase control may be performed so that the user does not feel a cold sensation immediately before waking up, and in the post-waking state, unnecessary high-temperature heat generation may be limited to reduce energy waste and safety risks. Therefore, the control profile of FIG. 5 shows that the first invention of the present invention is not a simple timer-type heat control, but a deep sleep-inducing heat control that actively reconfigures control values ​​according to changes in sleep stages.

[0183] FIG. 6 is an embodiment showing the air supply structure of the bed auxiliary air conditioning unit, and is useful for explaining the reason why the electric heating unit (100) of the first invention is placed in the central part of the bed (B) and the significance of the control thereof. Claim 1 has as a component that the electric heating unit (100) is placed in the central part of the bed corresponding to the lower central part of the user's body on the upper surface of the bed (B). In the embodiment shown in FIG. 6, this central contact heating area and the air control area on the outer edge or lower part of the bed may be partitioned from each other.

[0184] In this case, the electric heating pad (100) provides direct contact heat to the lower central part of the user's body, and the bed auxiliary air conditioning unit can perform a complementary function by supplying warm, cold, or dehumidified air to the underside or outer part of the bed. Claim 1 of the first invention of the present invention does not limit the bed auxiliary air conditioning unit to an essential component, but FIG. 6 shows that the central placement of the electric heating pad (100) is not a simple positional limitation, but a central design that clearly defines a contact heat area and enables the expansion of thermal comfort control for the entire bed.

[0185] The integrated control unit (700) interprets the temperature and humidity detection values ​​within the bed of the environment sensor unit (200) based on the central heating state, and corrects the intensity of the central contact heat according to the judgment value of the sleep state detection unit (300).

[0186] FIGS. 7 and 8 are examples illustrating the refrigerant flow paths for heating operation and cooling / dehumidification operation of a heat pump device, and are auxiliary drawings explaining that the integrated control unit (700) of the first invention of the present invention can determine the control priority by considering not only the heating operation of the electric heating pad unit (100) but also changes in the bed environment and the risk of condensation. In claim 1 of the first invention of the present invention, the integrated control unit (700) calculates the dew point or condensation risk level within the bed from the detection value of the environment sensor unit (200), and based on this, determines whether to execute or the control priority of at least one of overheat prevention control, condensation prevention control, electromagnetic wave attenuation control, grounding state / leakage current safety control, and deep sleep thermal pattern control. In the heating operation example of FIG. 7, contact heating of the electric heating pad unit (100) and auxiliary heating may be performed in parallel when the bed environment is in a low temperature state, and in the cooling or dehumidification operation example of FIG. 8, the relationship between the humidity within the bed and the surface temperature of the heating pad may cause a risk of condensation. At this time, the integrated control unit (700) of the first invention of the present invention does not simply turn the electric heating pad unit (100) on or off, but calculates the dew point or condensation risk level using the detection value of the environment sensor unit (200), and determines the priority of condensation prevention control or overheating prevention control by considering the surface temperature of the electric heating pad unit (100), humidity inside the bed, and the user's sleep state together. Accordingly, FIGS. 7 and 8 show that the control logic of the first invention of the present invention is not limited to thermal control, but can predictively control even the dangerous state of the heat and humidity environment inside the bed.

[0187] FIG. 9 is a diagram showing an embodiment of a composite heat source supply unit utilizing solar heat, geothermal heat, and residual heat from an electric heating pad, and FIG. 10 is a diagram schematically showing the specific configuration of a heat pump device. Claim 1 of the first invention of the present invention does not directly limit the composite heat source supply unit or the heat pump device to essential components, but FIG. 9 and FIG. 10 explain that the heating operation of the electric heating pad unit (100) may be linked with an external heat source, recovered heat, or air conditioning heat source in future embodiments. In particular, the integrated control unit (700) of the first invention of the present invention does not determine heating solely by the setting value of the portable controller (360), but rather corrects the heating output, energizing duty ratio, and remaining operating time by considering together the detection value of the environment sensor unit (200) and the judgment value of the sleep state detection unit (300). Accordingly, when combined with the embodiments of FIGS. 9 and FIG. 10, the integrated control unit (700) can maintain an appropriate bed environment while lowering the direct heat output of the electric heating pad unit (100), or, when there is sufficient auxiliary heat source, lower the target temperature of the electric heating pad unit (100) to suppress redundant overheating. This description supports the fact that the integrated control unit (700) of claim 1 is not a simple temperature controller, but a higher-level control unit that reconfigures the heat conditions of the electric heating pad unit (100) to match the surrounding thermal environment and sleep state.

[0188] FIG. 11 is an example illustrating the coordinated control flow for condensation prevention, electromagnetic wave attenuation, and safety cutoff, and most clearly explains the advanced control structure of the first invention. In the first invention, the integrated control unit (700) calculates the dew point or condensation risk level within the bed from the detection value of the environment sensor unit (200), and calculates the estimated time of the user's descent, the time of increased tossing and turning, or the time before waking up from the judgment value of the sleep state detection unit (300). Based on these calculated values, the integrated control unit (700) determines whether to execute or the control priority of at least one of a plurality of electric blanket control modes, including overheating prevention control, condensation prevention control, electromagnetic wave attenuation control, grounding state / leakage current safety control, and deep sleep thermal pattern control. For example, if the humidity inside the bed is high and the surface temperature of the electric heating pad approaches the dew point, the priority of condensation prevention control may be increased, and if the surface temperature of the heating pad is high and the sleep state detection unit (300) determines an increased state of tossing and turning, the priority of overheating prevention control may be increased. In addition, if safety abnormalities such as grounding abnormalities, leakage current abnormalities, or a decrease in insulation resistance are detected, grounding status and leakage current safety control may be applied first over the user's set temperature or deep sleep thermal pattern. As such, the control flow of FIG. 11 shows that the first invention of the present invention is a system that dynamically determines the control priority according to the actual risk level and the user's sleep state, rather than performing sleep comfort control and electrical safety control separately.

[0189] The operating mechanism of the first invention of the present invention is described in chronological order as follows. When a user operates a portable controller (360) before going to sleep to set the heating temperature and operating time of the electric heating pad unit (100), the integrated control unit (700) stores the corresponding setting value as a basic operating condition. Subsequently, the integrated control unit (700) starts the heating operation of the electric heating pad unit (100), and the environment sensor unit (200) detects at least one of the temperature inside the bed, the humidity inside the bed, the surface temperature of the electric heating pad unit, and the indoor temperature and humidity. At the same time, the sleep state detection unit (300) detects at least one of the user's body movement, pressure distribution, heart rate, and respiration to determine the user's sleep state. If it is determined that the user is still in a state before falling asleep, the integrated control unit (700) may maintain or increase the heating output of the electric heating pad unit (100) within a set range to preheat the bed. When the user's body movement decreases, the pressure distribution stabilizes, and the heart rate or breathing pattern changes to a state corresponding to falling asleep, the integrated control unit (700) calculates the time of estimation of falling asleep and subsequently lowers the target temperature or power duty ratio of the electric heating pad unit (100) to prevent excessive heat generation. In a deep sleep state, low-power maintenance control is performed to suppress rapid temperature changes, and in a light sleep state or a state of increased tossing and turning, control is performed to respond to overheating, increased humidity, or perceived temperature imbalance by determining the surface temperature of the heating pad, the temperature inside the bed, and the humidity inside the bed together. When a state before waking is calculated, gradual temperature increase control can be performed instead of rapid high-temperature heat generation, and in a state after waking up, unnecessary heat generation is limited or the remaining operating time is shortened to increase safety and energy efficiency.

[0190] The inventive step of the first invention of the present invention lies not in the existence of individual components, but in the fact that each component is organically combined to solve the specific problem of long-term unsupervised contact use during sleep. The electric heating pad unit (100) provides contact heating, the grounding shielding unit (120) performs electromagnetic shielding and leakage current induction functions, the portable controller (360) inputs the user's setting intent, the environment sensor unit (200) detects physical danger conditions of the bed environment, the sleep state detection unit (300) determines the user's sleep stage and biological response, and the integrated control unit (700) synthesizes these information to perform contact heating operation, grounding safety operation, and sleep state-linked heating operation independently or in conjunction with each other. Even if a temperature sensor, timer, grounding wire, or sleep sensor is known individually in the prior art, it is difficult to easily reach the control structure of the first invention of the present invention, which calculates the dew point or condensation risk level within the bed, calculates the time of estimation of sleep onset, the time of increased tossing and turning, or the time before waking up, and determines whether to execute or the priority of control for overheating prevention control, condensation prevention control, electromagnetic wave attenuation control, grounding status / leakage current safety control, and deep sleep thermal pattern control, by simply combining them in parallel.

[0191] In particular, the first invention of the present invention technically solves the practical problem that a user cannot actively operate during sleep. Although the user can set the temperature and time via a portable controller (360) before going to sleep, during actual sleep, the user cannot directly perceive or operate changes in their sleep stage, increases in humidity within the bed, changes in the surface temperature of the electric heating pad, the risk of condensation, grounding status, or leakage current abnormalities.

[0192] The first invention of the present invention is based on the premise of such a non-operation state, and the integrated control unit (700) interprets the detection and judgment results of the environment sensor unit (200) and the sleep state detection unit (300), and automatically corrects the heating operation of the electric heating pad unit (100) and the safety operation of the grounded shielding unit (120). Therefore, the first invention of the present invention is not a simple convenience function, but an automatic safety and comfort control technology that compensates for the absence of human operation during sleep. In addition, as shown in FIGS. 1 to 11, the first invention of the present invention demonstrates that the central contact heating of the electric heating pad unit (100), the electrical safety of the grounded shielding unit (120), the user input of the portable controller (360), the detection of the bed environment by the environment sensor unit (200), the judgment of the sleep state by the sleep state detection unit (300), the determination of the control priority by the integrated control unit (700), and the bed auxiliary air conditioning and condensation, electromagnetic wave, and safety blocking cooperative control can be connected under a single inventive concept.

[0193] Consequently, the first invention of the present invention places an electric heating pad (100) in the center of a bed (B) to provide contact heat to the lower central part of the user's body, and induces electromagnetic waves or leakage current to the ground side by means of a grounding shielding part (120), and the integrated control unit (700) comprehensively interprets the setting value of a portable controller (360), the detection value of an environment sensor part (200), and the judgment value of a sleep state detection part (300) to automatically correct the heating operation of the electric heating pad (100). In addition, the integrated control unit (700) adjusts at least one of the target temperature, heating output, power supply duty ratio, remaining operating time, and safety cutoff condition according to the user's sleep state, and determines whether to execute or the priority of control for overheating prevention control, condensation prevention control, electromagnetic wave attenuation control, grounding state / leakage current safety control, and deep sleep heat pattern control based on the dew point or condensation risk level in the bed, the time of estimation of falling asleep, the time of increased tossing and turning, or the time before waking up. With this configuration and operation, the first invention of the present invention can simultaneously achieve thermal control at different sleep stages, electrical safety, condensation suppression, and automatic comfort control in a state of no user operation, which conventional simple electric heating pads, simple earthing mats, simple timer-type heating devices, or simple sleep sensor-linked devices could not individually solve. Therefore, it possesses sufficient technical significance and inventive step in terms of the organic combination of its configuration, operating mechanism, and effects.

[0196] The second invention of the present invention relates to a grounded type sleep-inducing thermal-based temperature control system according to the first invention of the present invention, wherein the electric heating pad portion (100) is not a simple heating sheet, but is embodied as a multi-layer functional laminate that performs contact comfort, planar heat diffusion, electromagnetic shielding, leakage current induction, condensation prevention, heat storage, and downward thermal insulation in stages.

[0197] The second invention of the present invention is an advanced internal structure of the electric heating pad (100) that comes into most direct contact with the user's body among the overall system configuration shown in FIG. 1, and as shown in FIG. 2, the electric heating pad (100) is configured to include an upper cover layer (111), a temperature distribution control layer (140), a first shielding electrode (121) of a grounded shielding part (120), a heating part (130), a condensation blocking insulation layer (160), a heat storage layer (150), a second shielding electrode (122) of a grounded shielding part (120), a lower insulation layer (112), and a grounding wire.

[0198] This stacked structure is not a simple stack in which each layer functions independently, but is functionally arranged to simultaneously solve the problems of physical contact during the user's sleep, the electrical conduction state of the heating element (130), changes in temperature and humidity within the bed, the possibility of electromagnetic waves or leakage current generation, the possibility of condensation generation, and downward heat loss within a single electric heating element (100).

[0199] Referring to FIG. 1, the electric heating pad (100) is positioned in the central part of the bed corresponding to the lower central part of the user's body on the upper surface of the bed (B), and is subject to control by the integrated control unit (700) for contact heating operation, grounding safety operation, and sleep state-linked heating operation. The second invention of the present invention concretizes the internal structure of the electric heating pad (100) as the multi-layer stacked structure of FIG. 2, thereby enabling the control logic of the first invention of the present invention to be stably implemented in the actual physical structure.

[0200] That is, even if the integrated control unit (700) corrects the target temperature, heating output, power supply duty ratio, remaining operating time, or safety cutoff conditions of the electric heating pad unit (100) according to the detection value of the environment sensor unit (200) and the judgment value of the sleep state detection unit (300), if the electric heating pad unit (100) itself is vulnerable to local overheating, insulation degradation, condensation, electromagnetic wave exposure, or downward heat loss, it is difficult to sufficiently achieve the sleep-inducing effect and safety.

[0201] Accordingly, the second invention of the present invention comprises an electric heating pad (100) composed of a functional laminate of an upper cover layer (111), a temperature distribution control layer (140), a first shielding electrode (121), a heating element (130), a condensation blocking insulation layer (160), a heat storage layer (150), a second shielding electrode (122), and a lower insulation layer (112), so that the control of the integrated control unit (700) appears uniformly and safely on the actual bed contact surface.

[0202] The upper cover layer (111) is formed as a skin-contact fiber layer that comes into direct contact with the user's body or bedding. In the second invention of the present invention, the upper cover layer (111) is not merely a covering material that forms the exterior of the electric heating pad (100), but is a functional layer that simultaneously provides tactile sensation, moisture absorption, wear resistance, antibacterial properties, and perceived thermal properties while coming into contact with the user's skin or bedding for a long time during sleep. The upper cover layer (111) may be formed with an upper cover layer composition based on 100% by weight of the total fiber layer, comprising 40 to 44% by weight of lyocell fiber as a first component, 26 to 30% by weight of recycled polyester fiber as a second component, 12 to 15% by weight of nylon-based abrasion-resistant fiber as a third component, 5 to 7% by weight of polyurethane-based elastic fiber as a fourth component, 3 to 5% by weight of ceramic-based far-infrared radiation particles as a fifth component, 1 to 2% by weight of silver-zinc-based antibacterial particles as a sixth component, and 3 to 5% by weight of silica-based moisture-absorbing particles as a seventh component, wherein the sum of the first to seventh components is 100% by weight.

[0203] Lyocell fibers provide a soft touch and moisture absorption upon contact with the skin, recycled polyester fibers provide dimensional stability and durability, and nylon-based abrasion-resistant fibers suppress surface wear caused by the user's repeated load and friction with the bedding. Polyurethane-based elastic fibers absorb deformation caused by the user's weight shift and tossing and turning, ceramic-based far-infrared radiation particles assist in perceived warmth, silver-zinc-based antimicrobial particles inhibit the growth of microorganisms in a long-term contact environment with the bedding, and silica-based moisture-absorbing particles alleviate stickiness or discomfort caused by increased humidity in the bed. Therefore, the upper cover layer (111) is a layer that directly forms the user's sleep comfort at the top layer of the second invention.

[0204] The temperature distribution control layer (140) is positioned below the upper cover layer (111) and is configured to diffuse the heat generated from the heating element (130) in a planar direction including the length and width directions of the electric heating element (100) to alleviate local overheating.

[0205] In the second invention of the present invention, the temperature distribution control layer (140) may be formed as a triple functional layer in which a planar heat diffusion layer comprising a graphite sheet or a carbon fiber nonwoven fabric that diffuses heat generated from a heating element (130) in a planar direction, an insulating heat conductive layer comprising at least one electrically insulating ceramic filler among boron nitride, alumina, and magnesium oxide that provides thermal conductivity and electrical insulation, and a heat storage / heat dissipation layer comprising a microencapsulated phase change material that mitigates a rapid rise or fall in surface temperature are sequentially stacked.

[0206] This temperature distribution control layer (140) is not merely a layer that transmits heat, but performs the function of mitigating and dispersing linear or localized heat from the heating element (130) to the entire contact surface of the user's body. In particular, since the electric heating element (100) for bed is pressed in a specific area by the user's body weight and the contact pressure changes according to the user's posture, there is a possibility that a locally high temperature may be formed in a specific area of ​​the heating element (130).

[0207] The temperature distribution control layer (140) spreads this local overheating in a planar direction to suppress the concentration of heat on specific parts of the user's body, and assists in ensuring that the target temperature or power duty ratio set by the integrated control unit (700) is uniformly implemented in the actual surface temperature distribution.

[0208] The planar heat diffusion layer of the temperature distribution control layer (140) serves to rapidly diffuse the heat of the heating element (130) in the longitudinal and width directions, the insulating heat conductive layer serves to reinforce electrical insulation between the heating element (130) and the user's body direction while maintaining thermal conductivity, and the heat storage and slow heat dissipation layer serves to buffer so that the surface temperature does not drop rapidly even if the current flow of the heating element (130) is reduced or temporarily stopped. Although these triple functional layers each have independent effects, in the second invention of the present invention, they are arranged sequentially so that the heat of the heating element (130) first diffuses in the planar direction and is transferred to the user's contact surface while maintaining electrical insulation, and then the rapid change in the perceived temperature during sleep is suppressed by the heat storage and slow heat dissipation action. This structure is also organically combined with the sleep state-linked multi-stage thermal control profile of FIG. 5. That is, even if the integrated control unit (700) lowers the power supply duty ratio of the heating unit (130) after entering sleep or while in deep sleep, the heat storage and heat dissipation layer of the temperature distribution control layer (140) releases residual heat gradually so that the user does not feel a sudden cold sensation.

[0209] The first shielding electrode (121) is positioned below the temperature distribution control layer (140), that is, between the temperature distribution control layer (140) and the heating element (130). The first shielding electrode (121) is part of the grounded shielding element (120) and performs the function of shielding electromagnetic waves generated from the heating element (130) and inducing leakage current to the ground side.

[0210] In the second invention of the present invention, the first shielding electrode (121) is electrically connected to a grounding terminal via a grounding wire while being electrically insulated from the heating unit (130). This arrangement has significant technical implications. Since the first shielding electrode (121) is located above the heating unit (130), it can prioritize shielding electric field components or electromagnetic wave components that may be transmitted from the heating unit (130) toward the user's body. Furthermore, since the first shielding electrode (121) is connected to a grounding terminal while being electrically insulated and not directly conductive to the heating unit (130), the normal current path of the heating unit (130) and the leakage current or electrostatic induction path are structurally separated. Therefore, the second invention of the present invention can ensure electromagnetic shielding and leakage current safety while maintaining heating performance.

[0211] The first shielding electrode (121) may be formed as a conductive shielding composition based on 100% by weight of the total composition, comprising 30 to 40% by weight of copper powder or copper flakes as the first component, 5 to 10% by weight of silver-coated copper powder as the second component, 5 to 12% by weight of nickel powder or nickel-coated carbon fiber as the third component, 4 to 10% by weight of graphite powder or graphene nanoplatelets as the fourth component, 1 to 5% by weight of conductive carbon black or carbon nanotubes as the fifth component, 25 to 38% by weight of a polyurethane-based or silicone-based elastic binder as the sixth component, and 3 to 8% by weight of a halogen-free phosphorus-based flame retardant or nitrogen-based flame retardant as the seventh component, wherein the sum of the first to seventh components is 100% by weight. Copper powder or copper flakes provide high conductivity and electromagnetic shielding, silver-coated copper powder can reduce contact resistance and mitigate the degradation of conductivity due to oxidation, and nickel powder or nickel-coated carbon fibers reinforce shielding stability and durability. Graphite powder or graphene nanoplatelets and conductive carbon black or carbon nanotubes assist to prevent the conductive network from being easily severed during repeated bending, and polyurethane-based or silicone-based elastic binders absorb deformation caused by repeated folding and weight load of the electric heating pad (100). Halogen-free flame retardants provide the flame retardancy required for electric products for beds. Therefore, the first shielding electrode (121) is not a simple metal thin film or a simple conductive layer, but a bed-use grounding shielding layer that considers flexibility, shielding, grounding, bending resistance, and flame retardancy together.

[0212] The heating element (130) is positioned below the first shielding electrode (121) to form a substantial heat source for the electric heating element (100). In the second invention of the present invention, the heating element (130) is functionally connected to the first shielding electrode (121) and the temperature distribution control layer (140) on the upper side, and functionally connected to the condensation blocking insulation layer (160), the heat storage layer (150), the second shielding electrode (122), and the lower insulation layer (112) on the lower side.

[0213] Heat generated from the heating element (130) diffuses in a planar direction through the temperature distribution control layer (140) and is transferred to the user's body or bedding via the upper cover layer (111), and some of the heat is stored in the heat storage layer (150) and can be released gradually. Additionally, electromagnetic waves or leakage current components that may be generated from the heating element (130) are shielded by the first shielding electrode (121) and the second shielding electrode (122) or guided to the ground side. Therefore, the heating element (130) does not remain merely a component that converts electricity into heat, but functions as a core component located at the center of the entire multilayer functional structure of the second invention of the present invention, where heat, electricity, moisture, and safety control intersect.

[0214] The condensation-blocking insulation layer (160) is positioned below the heating element (130) to suppress moisture penetration and condensation, and at the same time, ensures electrical insulation between the heating element (130) and the lower component. The condensation-blocking insulating layer (160) may be formed as a moisture-proof and insulating composition based on 100% by weight of the total composition, comprising 45 to 60% by weight of a first component, which is a silicone-based or polyurethane-based insulating elastic resin; 10 to 20% by weight of a second component, which is an insulating thermal conductive filler of at least one of alumina, boron nitride, or magnesium oxide; 5 to 12% by weight of a third component, which is a silica or zeolite-based moisture-absorbing filler; 3 to 8% by weight of a fourth component, which is a fluorine-based or silane-based water-repellent additive; 8 to 15% by weight of a fifth component, which is a halogen-free flame retardant; and 1 to 5% by weight of a sixth component, which is a dispersant or coupling agent, wherein the sum of the first to sixth components is 100% by weight.

[0215] A silicone-based or polyurethane-based insulating elastic resin provides insulation while maintaining flexibility against repeated loading and folding, an insulating thermal conductive filler assists in ensuring that heat from the heating element (130) is transferred consistently to the lower heat storage layer (150), and a moisture-absorbing filler absorbs moisture or fine water inside the bed to reduce the possibility of condensation. A water-repellent additive inhibits water from penetrating into the heating element (130) or the shielding electrode, and a flame retardant enhances the safety of the electric heating element (100). Therefore, the condensation-blocking insulating layer (160) is an intermediate safety layer that simultaneously performs electrical insulation and moisture resistance in the second invention of the present invention.

[0216] Referring to FIGS. 8 and FIGS. 11, the integrated control unit (700) of the first invention of the present invention can calculate the dew point or condensation risk level within the bed from the detection value of the environmental sensor unit (200) and determine whether to execute or prioritize condensation prevention control. The condensation-blocking insulation layer (160) of the second invention of the present invention is a physical basis that enables such condensation prevention control to operate effectively in actual structure. That is, even if the integrated control unit (700) determines the condensation risk based on the humidity within the bed and the surface temperature of the electric heating pad unit, it is difficult to sufficiently guarantee safety during long-term use if there is no layer inside the electric heating pad unit (100) that suppresses moisture penetration and maintains insulation.

[0218] The second invention of the present invention structurally suppresses the risk of internal condensation, reduced insulation resistance, and leakage current that may occur during cooling or dehumidification operation by placing a condensation-blocking insulating layer (160) on the lower side of the heating element (130) and forming it with a moisture-proof and insulating composition. Accordingly, the second invention of the present invention provides a condensation-safe structure in which the control algorithm and the physical structure complement each other.

[0219] The heat storage layer (150) is positioned below the condensation-blocking insulation layer (160) to temporarily store or gradually release heat from the heating element (130). Although Claim 2 does not limit the specific composition of the heat storage layer (150), in the present invention, the heat storage layer (150) is an important layer that performs a thermal buffering function for the electric heating element (100). During sleep, the power supply duty ratio of the heating element (130) may change according to the user's sleep stage, and in particular, after falling asleep or in a deep sleep state, the heat output may be reduced to prevent overheating. In this case, if the heat storage layer (150) is not present, the surface temperature of the electric heating element (100) may drop rapidly, causing the user to feel cold or disrupt sleep. By storing the heat from the heating element (130) for a certain period of time and then gradually releasing it, the heat control linked to the sleep state of the integrated control unit (700) is performed without a sudden change in the perceived temperature. Accordingly, the heat storage layer (150) performs the function of mitigating the fluctuation range of the surface temperature of the electric heating pad (100) in the temperature reduction section after the elevation estimation of FIG. 5, the deep water level maintenance section, and the gradual temperature increase section before waking up.

[0220] The second shielding electrode (122) is a lower shielding configuration of the grounded shielding section (120) positioned on the lower side of the heat storage layer (150). While the first shielding electrode (121) focuses on shielding electromagnetic waves or leakage current components that may be transmitted in the upper direction of the heating section (130), i.e., in the direction of the user's body, the second shielding electrode (122) performs the function of auxiliaryly shielding or guiding electrical components that may be transmitted in the lower direction of the heating section (130) or in the direction of the bed (B) structure to the ground side. At least one of the first shielding electrode (121) and the second shielding electrode (122) is electrically connected to a grounding terminal through a grounding wire. A structure in which shielding electrodes can be positioned on the upper and lower sides relative to the heating section (130) in this manner enables the electrical influence of the heating section (130) to be suppressed not only in the direction of the user's body but also in the direction of the bed (B) or bed structure. In addition, since the second shielding electrode (122) is positioned above the lower insulation layer (112), it is possible to stably form an electrostatic influence or leakage current induction path toward the ground side that may occur in the lower structure of the electric heating pad (100).

[0221] The lower insulation layer (112) is positioned below the second shielding electrode (122) to reduce downward heat loss. When the electric heating pad (100) is positioned in the center of the upper surface of the bed (B), some of the heat generated from the heating element (130) is transferred toward the user's body, and some may be lost toward the mattress or lower structure of the bed (B). The lower insulation layer (112) suppresses this downward heat loss so that the heat from the electric heating pad (100) is efficiently transferred toward the user's body or bedding. The presence of the lower insulation layer (112) contributes not only to simple energy saving but also to reducing the risk of overheating and reducing power consumption, as it enables the integrated control unit (700) to provide sufficient perceived heat even with a low power duty ratio. In addition, the lower insulation layer (112) supports the lower side of the second shielding electrode (122) and the heat storage layer (150) to increase the stacking stability of the electric heating pad part (100).

[0222] Each layer of the second invention of the present invention is not positioned arbitrarily, but is arranged considering the movement path of heat, electricity, and moisture from the direction of the user's body to the direction of the bed (B). An upper cover layer (111) is placed on the uppermost layer that contacts the user's body to provide tactile sensation, moisture absorption, and antibacterial properties, and a temperature distribution control layer (140) is placed below it to disperse local heat from the heating element (130) in a planar direction. A first shielding electrode (121) is placed below the temperature distribution control layer (140) to shield electromagnetic waves or leakage current components directed toward the user's body, and a heating element (130) is placed below it to form a substantial heat source. A condensation-blocking insulation layer (160) is placed below the heating element (130) to suppress moisture penetration and insulation degradation, and a heat storage layer (150) is placed below it to temporarily store heat or release it gradually. A second shielding electrode (122) is disposed on the lower side of the heat storage layer (150) to additionally shield against electrical influences in the downward direction, and a lower insulation layer (112) is disposed on the lowest side to reduce downward heat loss. Accordingly, the stacking sequence of the second invention of the present invention is designed according to a functional flow of contact comfort, heat diffusion, upper shielding, heat generation, moisture-proof insulation, heat storage, lower shielding, and insulation.

[0223] FIG. 3 illustrates an example of a heating means that may be included in a heating unit (130), FIG. 4 illustrates a front view configuration of a portable controller (360), and FIG. 5 illustrates a multi-stage thermal control profile linked to a sleep state. The second invention of the present invention may also be functionally combined with the configurations of FIG. 3 to FIG. 5. For example, when the heating unit (130) of FIG. 3 is energized to generate heat, the temperature distribution control layer (140) of FIG. 2 diffuses the heat in a planar direction, the heat storage layer (150) stores some of the heat, and the first shielding electrode (121) and the second shielding electrode (122) induce electromagnetic waves or leakage current to the ground side. When a user inputs a deep sleep mode or an electromagnetic wave attenuation state through the portable controller (360) of FIG. 4, the integrated control unit (700) can correct the power supply duty ratio or target temperature of the heating unit (130) according to the multi-stage thermal control profile of FIG. 5, and the result of this correction is uniformly and safely transmitted to the user's body contact surface through the multi-layer electric heating pad unit (100) of the second invention of the present invention. That is, the second invention of the present invention is a core hardware structure in which the control logic of the first invention of the present invention is physically implemented.

[0224] Referring to FIG. 6, the electric heating pad (100) is positioned in the center of the bed (B), and, if necessary, an auxiliary air conditioning unit for the bed that supplies warm, cold, or dehumidifying air may be positioned in the outer or lower area of ​​the bed (B). In this case, the electric heating pad (100) of the second invention of the present invention is responsible for the central contact heating area, and the auxiliary air conditioning unit for the bed is responsible for the outer air control area. Since the electric heating pad (100) has a multi-layer structure like that of the second invention of the present invention, even if the temperature and humidity inside the bed change due to the outer air conditioning, the condensation-blocking insulation layer (160) suppresses internal moisture penetration, the temperature distribution control layer (140) reduces local deviations in surface temperature, and the first shielding electrode (121) and the second shielding electrode (122) of the grounding type shielding part (120) can maintain electrical safety. Accordingly, the second invention of the present invention provides a structural basis that can maintain the safety and comfort of the electric heating pad (100) even in an embodiment where central contact heating and outer air conditioning are combined.

[0225] FIGS. 7 to 10 are embodiments illustrating a heat pump device (400), a water circulation cycle (50), a composite heat source supply unit (800), or an auxiliary heat source structure. Although Claim 2 of the present invention itself does not limit the heat pump device (400) to an essential component, the effect of the present invention becomes clearer when combined with the embodiments of FIGS. 7 to 10. When the temperature and humidity inside the bed change due to the heating operation or cooling / dehumidification operation of the heat pump device (400), the electric heating pad unit (100) is directly exposed to such environmental changes. At this time, the upper cover layer (111) maintains the user's contact comfort, the temperature distribution control layer (140) mitigates the heat deviation caused by the heat pump auxiliary heating or electric heating, and the condensation blocking insulation layer (160) suppresses the risk of moisture condensation that may occur during cooling or dehumidification operation. Additionally, the heat storage layer (150) temporarily stores heat from the heat pump condensation or residual heat from the heating unit (130) to prevent a sudden change in surface temperature, and the first shielding electrode (121) and the second shielding electrode (122) maintain electrical safety of the electric heating pad unit (100). Therefore, the second invention of the present invention functions as a stable bed contact heating structure even in an extended embodiment combined with a heat pump device (400) or a composite heat source supply unit (800).

[0226] FIG. 11 illustrates a coordinated control flow for preventing condensation, attenuating electromagnetic waves, and safety cutoff. The second invention of the present invention is closely linked to the control flow of FIG. 11. When the integrated control unit (700) calculates the dew point or condensation risk level within the bed from the detection value of the environment sensor unit (200) and determines the grounding state or leakage current abnormality of the grounding type shielding unit (120), the internal structure of the electric heating pad unit (100) must be able to respond to the result of the determination so that it leads to actual safety. The second invention of the present invention performs electromagnetic wave shielding and leakage current induction through the first shielding electrode (121), the second shielding electrode (122), and the grounding wire, suppresses moisture penetration and insulation degradation through the condensation-blocking insulation layer (160), and mitigates the risk of overheating through the temperature distribution control layer (140). Accordingly, in the control flow of FIG. 11, when overheating prevention control is selected, the temperature distribution control layer (140) physically mitigates local overheating, and when condensation prevention control is selected, the condensation blocking insulation layer (160) performs moisture-proof and insulation functions, and when electromagnetic wave attenuation control or grounding state / leakage current safety control is selected, the first shielding electrode (121), the second shielding electrode (122), and the grounding wire provide an electrical safety path. In this way, the second invention of the present invention provides a physical corresponding structure that enables the control judgment of the integrated control unit (700) to be effectively implemented in the actual device structure.

[0227] The operating mechanism of the second invention of the present invention is described in general as follows. When a user operates the electric heating pad (100), the heating element (130) is energized to generate heat. The heat from the heating element (130) is transferred upward, diffused in the longitudinal and width directions by the temperature distribution control layer (140), and transferred to the user's body or bedding through the upper cover layer (111). In this process, the temperature distribution control layer (140) alleviates localized heat generation of the heating element (130), and the upper cover layer (111) improves the user's contact sensation and performs moisture absorption and antibacterial functions. At the same time, the first shielding electrode (121) guides electromagnetic waves or leakage current components that may be transmitted in the upward direction of the heating element (130) toward the ground side, and the second shielding electrode (122) additionally shields electrical influences in the downward direction. At the lower side of the heating element (130), a condensation-blocking insulation layer (160) suppresses moisture penetration and insulation degradation, and a heat storage layer (150) stores some heat to maintain a gentle warmth even after the current flow of the heating element (130) decreases. The lower insulation layer (112) suppresses downward heat loss, thereby increasing the thermal efficiency of the electric heating element (100). Through these actions, the electric heating element (100) of the second invention of the present invention stably provides contact heat to the user while sleeping, while simultaneously performing electromagnetic shielding, leakage current induction, condensation suppression, local overheating mitigation, and downward heat loss reduction.

[0228] The inventive step of the second invention of the present invention lies in the fact that the electric heating pad (100) is not viewed as a simple combination of a heating layer and an outer layer, but rather the complex problems that occur in a long-term physical contact environment during sleep are solved through functional division by layer and organic combination between layers. Even if conventional electric heating pads include heating wires, an insulating layer, and an outer layer, it is difficult to systematically solve problems within a single laminated structure, such as the problem of uniformly spreading heat generated from the heating part in a planar direction, the problem of inducing electromagnetic waves or leakage current directed toward the user's body to the ground side, the problem of condensation that may occur inside or on the surface of the pad in a cooling or dehumidifying environment, the problem of rapid change in surface temperature due to changes in the current flow rate of the heating part, and the problem of downward heat loss.

[0229] The second invention of the present invention arranges an upper cover layer (111), a temperature distribution control layer (140), a first shielding electrode (121), a heating element (130), a condensation blocking insulation layer (160), a heat storage layer (150), a second shielding electrode (122), and a lower insulation layer (112) in a specific functional order, thereby uniformly transferring heat from the heating element (130) toward the user's body, guiding electrical hazardous components toward the ground side, suppressing moisture from penetrating the heating element (130) and the shielding electrode, and allowing residual heat to be gradually released by the heat storage layer (150).

[0230] In particular, the second invention of the present invention exhibits a significant effect when combined with the integrated control unit (700), environmental sensor unit (200), sleep state detection unit (300), and portable controller (360) of the first invention of the present invention. Even if the integrated control unit (700) lowers the power supply duty ratio of the heating unit (130) according to the sleep state, the sudden change in perceived temperature is suppressed by the heat storage layer (150) and the temperature distribution control layer (140); when the environmental sensor unit (200) calculates the dew point or condensation risk level within the bed, the condensation blocking insulation layer (160) structurally reduces the risk of condensation; and when electromagnetic wave attenuation control or grounding state / leakage current safety control is performed, the first shielding electrode (121), the second shielding electrode (122), and the grounding wire provide an actual electrical induction path.

[0231] Therefore, the second invention of the present invention has great technical significance in that it implements physical safety and comfort, which cannot be achieved solely through the judgment of the control unit, in the stacked structure of the electric heating pad (100) itself.

[0232] Consequently, the second invention of the present invention provides a specific hardware structure of the electric heating pad unit (100) in the overall system configuration of FIG. 1, and integrates contact comfort, heat diffusion, electromagnetic shielding, leakage current induction, condensation prevention, heat storage, and thermal insulation into a single electric heating pad unit (100) through the laminated cross-sectional structure of FIG. 2. In addition, it can be combined with the heating unit embodiment of FIG. 3, the portable controller (360) of FIG. 4, the sleep state interlocking control profile of FIG. 5, the bed auxiliary air conditioning structure of FIG. 6, the heat pump and composite heat source embodiment of FIG. 7 to 10, and the condensation, electromagnetic, and safety blocking cooperative control flow of FIG. 11, thereby safely and uniformly implementing the control concept of the first invention of the present invention at the actual bed contact surface. Since this configuration can simultaneously achieve complex effects that conventional simple electric heating pads, simple shielding mats, or simple temperature control mats cannot individually provide—namely, alleviation of localized overheating during sleep, improvement of electrical safety, suppression of condensation, stabilization of surface temperature, reduction of downward heat loss, and improvement of perceived thermal warmth for deep sleep—the second invention of the present invention has sufficient technical significance and inventive step in terms of the organic combination relationship of the configuration, the mechanism of operation, and the effects.

[0235] The third invention of the present invention is described below.

[0236] The third invention of the present invention relates to a grounded type sleep-inducing thermal-based temperature control system according to the second invention of the present invention, wherein the heat storage layer (150) of the electric heating pad (100) is formed with a heat storage composition having a specific composition ratio, the heating part (130) is embodied as a heating means (70) having a multi-layer coating structure, and an outer covering tube (77) made of an antibacterial and eco-friendly durable coating composition is formed on the outermost part of the heating means (70).

[0237] The third invention of the present invention is a hardware invention that specifically implements the heat generation stability, heat storage stability, electromagnetic shielding assistance, repeated bending durability, moisture penetration inhibition, and long-term skin contact stability of the electric heating pad (100) in the overall grounded sleep-inducing thermal-based temperature control system shown in FIG. 1.

[0238] In particular, the third invention of the present invention provides a highly stable sleep-inducing thermal structure that considers the user's body weight load during sleep, repeated tossing and turning, moisture inside bedding, the possibility of electromagnetic waves or leakage current during power supply, local overheating of the heating part, and a long-term skin contact environment, by organically combining a heat storage layer (150) disposed below the condensation-blocking insulation layer (160) in the laminated structure of the electric heating part (100) shown in FIG. 2, a heating means (70) included in the heating part (130), and an outer covering tube (77) which is the outermost covering layer of the heating means (70), rather than simply an electric heating pad that generates heat. Claim 3 of the third invention of the present invention defines together the composition of the heat storage layer (150), the multilayer structure of the heating means (70), the auxiliary shielding layer function of the copper outer tube (75) and aluminum foil (76), and the antibacterial and eco-friendly durable composition of the outer covering tube (77).

[0239] Referring to FIGS. 2 and FIGS. 3, the heat storage layer (150) of the third invention of the present invention is positioned below the condensation-blocking insulation layer (160) and performs the function of temporarily storing or gradually releasing heat from the heat-generating part (130).

[0240] The above heat storage layer (150) is formed from a heat storage composition comprising, based on 100% by weight of the total composition, 35 to 50% by weight of a first component, a silicone-based or polyurethane-based elastic resin; 15 to 30% by weight of a second component, a microencapsulated phase change material; 10 to 20% by weight of a third component, a ceramic heat storage particle selected from at least one of alumina, magnesium oxide, or boron nitride; 3 to 8% by weight of a fourth component, a graphite powder or carbon-based thermal conductive filler; 5 to 10% by weight of a fifth component, a halogen-free flame retardant; and 1 to 4% by weight of a sixth component, a dispersant or silane-based coupling agent.

[0242] This heat storage layer (150) is not merely a thick buffer layer that stores heat, but a thermal buffer layer that prevents the user from feeling a sudden cold sensation even when the power supply duty ratio of the heating element (130) decreases, prevents instantaneous heat from the heating element (130) from being rapidly transferred to the user's body contact surface, and mitigates sudden changes in surface temperature when the integrated control unit (700) lowers or raises the heat output according to the sleep state-linked multi-stage thermal control profile of FIG. 5. In other words, the heat storage layer (150) of the third invention is a core structure that enables the sleep state-linked control of the first and second inventions to be smoothly implemented at the actual user's perceived temperature.

[0243] The silicone-based or polyurethane-based elastic resin, which is the first component of the heat storage layer (150), serves as the base resin of the heat storage composition and performs the function of stably fixing microencapsulated phase change material, ceramic heat storage particles, graphite powder or carbon-based heat conductive filler, flame retardant, dispersant, or coupling agent within an elastic matrix capable of withstanding repeated bending and body weight load of the electric heating pad (100). If this component is less than 35% by weight, the content of inorganic particles and phase change material in the heat storage composition becomes relatively excessive, which may reduce the flexibility, adhesion, and durability of repeated bending of the layer, and there is a risk that cracks or particle detachment may occur in the heat storage layer (150) due to the user's tossing and turning or folding of the bedding. Conversely, if it exceeds 50% by weight, the ratio of the base resin becomes excessively high, which reduces the relative content of microencapsulated phase change material and ceramic heat storage particles, and the heat storage capacity and heat dissipation of the heat storage layer (150) may become insufficient. Therefore, the range of 35 to 50 weight percent is a critical range for simultaneously securing elasticity, durability, particle fixation, and heat storage function of the heat storage layer (150).

[0244] The second component, a microencapsulated phase change material, absorbs latent heat in a certain temperature range due to the heat generated by the heating element (130), and mitigates a rapid rise or fall in surface temperature by gradually releasing the stored latent heat when the power supply duty ratio decreases or the output of the heating element (130) decreases. If this component is less than 15% by weight, the amount of latent heat stored is insufficient, so the effect of mitigating the drop in perceived temperature during the cooling phase after falling asleep or during the deep sleep maintenance phase may not be sufficient. Conversely, if it exceeds 30% by weight, the content of microcapsules becomes excessive, which may reduce the mechanical strength and bending durability of the heat storage layer (150), increase the possibility of capsule breakage due to repeated compression or bending, and reduce the bonding stability with the base resin. Therefore, the range of 15 to 30% by weight is a critical range for maintaining the flexibility and durability required for the bed electric heating pad (100) while securing the amount of latent heat storage necessary for deep sleep thermal control.

[0245] At least one ceramic heat storage particle among alumina, magnesium oxide, or boron nitride, which is the third component, assists in the heat capacity, dimensional stability, and heat transfer uniformity of the heat storage layer (150). Unlike the latent heat storage function of microencapsulated phase change materials, this component provides sensible heat storage and thermal diffusion stability, thereby suppressing the excessive localized concentration of heat from the heating element (130) within the heat storage layer (150). If the ceramic heat storage particle is less than 10 weight%, the sensible heat storage and thermal stability of the heat storage layer (150) may be insufficient, and if it exceeds 20 weight%, the hardness of the heat storage layer (150) increases, which may reduce the cushioning and flexibility required for the product for use as a bed, and there is a risk of interlayer delamination or microcracks occurring in areas where the user's body pressure is concentrated during prolonged use. Therefore, the range of 10 to 20 weight% is a critical range for balancing thermal stability and flexibility for use as a bed.

[0246] The fourth component, graphite powder or carbon-based thermal conductive filler, forms a heat transfer path within the heat storage layer (150) so that the heat from the heating part (130) is distributed relatively uniformly throughout the heat storage layer (150). If this component is less than 3 weight percent, a heat conduction network is not sufficiently formed, so heat may be stored only in some areas of the heat storage layer (150) or local temperature differences may occur. Conversely, if it exceeds 8 weight percent, the viscosity of the composition may become excessively high due to the increased content of the carbon-based filler, which may reduce moldability and have an adverse effect on the insulation stability or flexibility of the electric heating pad part (100), and the thermal conductivity may become excessively high, resulting in rapid heat dissipation characteristics rather than slow heat dissipation. Therefore, the range of 3 to 8 weight percent is a critical range for simultaneously securing uniform heat distribution and slow heat dissipation characteristics of the heat storage layer (150).

[0247] The fifth component, a halogen-free flame retardant, provides flame retardancy in consideration of the fact that the heat storage layer (150) is used as an inner layer of the electric heating pad (100) adjacent to the heating part (130). If this component is less than 5 weight%, it is difficult to expect a sufficient flame retardant effect in the case of prolonged power supply or abnormal heating of the heating part (130), and if it exceeds 10 weight%, the elasticity, adhesion, heat storage, and moldability of the heat storage layer (150) may be reduced due to the excessive addition of the flame retardant. Therefore, the range of 5 to 10 weight% is a critical range for maintaining a balance between the flame retardant stability required for the electric product for bed use and the mechanical and thermal performance of the heat storage layer (150). The sixth component, a dispersant or silane-based coupling agent, ensures that the microencapsulated phase change material, ceramic heat storage particles, and carbon-based thermal conductive filler are uniformly dispersed within the base resin and increases the interfacial bonding strength between the inorganic particles and the resin. If this component is less than 1 weight%, particle aggregation may occur, which may reduce the thermal uniformity and mechanical stability of the heat storage layer (150), and if it exceeds 4 weight%, excess additives may migrate to the surface of the layer or reduce the long-term stability of the composition. Therefore, the range of 1 to 4 weight% is a critical range for ensuring dispersion stability, interfacial adhesion, and long-term durability of the heat storage composition.

[0248] In the third invention of the present invention, the heating unit (130) includes a heating means (70), and the heating means (70) includes a heating core (71) made of a plurality of carbon fiber strands, a fluoropolymer core tube (72) that wraps around the outer circumference of the heating core (71) to insulate it, a carbon fiber reinforcing yarn (73) that is wound around the outer circumference of the core tube (72) to increase the durability of the core tube, an inner covering tube (74) made of PVC material that accommodates the carbon fiber reinforcing yarn (73) inside, a copper outer covering tube (75) that accommodates the inner covering tube (74) inside, an aluminum foil (76) that is wound around the outer circumference of the copper outer covering tube (75), and an outer covering tube (77) that accommodates the aluminum foil (76) inside. Unlike a simple heating wire, such a heating means (70) performs uniform and stable heating in the center by means of a carbon fiber heating core (71), and on the outside, a core tube (72), carbon fiber reinforcing yarn (73), inner covering tube (74), copper outer covering tube (75), aluminum foil (76), and outer covering tube (77) are sequentially arranged to perform insulation, reinforcement, shielding, moisture resistance, wear resistance, and skin contact safety functions in stages. In particular, the heating core (71), which is made of multiple strands of carbon fiber, can mitigate the risk of local breakage or sudden local heating compared to a metal single-strand heating wire, and has the advantage of dispersing stress when bent due to the multiple-strand structure. The fluoropolymer core tube (72) ensures electrical insulation and heat resistance of the heating core (71), and the carbon fiber reinforcing yarn (73) reinforces the outer circumference of the core tube (72) to suppress damage to the covering caused by repeated bending or body weight load.

[0249] The inner cladding tube (74) made of PVC material accommodates carbon fiber reinforcing yarn (73) inside and functions as an intermediate cladding layer of the heating means (70), and the copper outer cladding tube (75) provides mechanical protection and auxiliary electromagnetic shielding functions on the outside of the inner cladding tube (74). The aluminum foil (76) is wound around the outer circumference of the copper outer cladding tube (75) to expand the shielding area and to auxiliaryly attenuate electrical effects that may occur in the direction of the outer circumference of the heating means (70). An important point in the third invention is that the copper outer cladding tube (75) and the aluminum foil (76) are electrically insulated from the heating core (71) and are selectively electrically connected to at least one of the ground wire of the grounded shielding part (120), the first shielding electrode (121), or the second shielding electrode (122) to function as an auxiliary shielding layer. With this configuration, the heating means (70) can separate the current path of the heating core (71) from the shielding and grounding path, while also inducing electromagnetic waves or leakage current components from the outer periphery of the heating part (130) itself to the ground side. That is, if the first shielding electrode (121) and the second shielding electrode (122) of FIG. 2 form a layered shielding structure of the electric heating pad part (100), the copper outer tube (75) and the aluminum foil (76) of FIG. 3 form a linear or local shielding structure of the heating means (70). These two do not overlap with each other, but rather have an organic relationship that combines planar shielding and linear shielding to gradually reduce the electrical effects that may be transmitted toward the user's body while sleeping.

[0250] The outer covering tube (77) is the outermost covering layer of the heating means (70) that contains an aluminum foil (76) inside, and suppresses wear caused by repeated loading by the user, folding, moisture penetration, and degradation of insulation. The outer covering tube (77) is formed from an antibacterial and eco-friendly durable covering composition having antibacterial properties, eco-friendliness, durability, flexibility, low odor, skin contact safety, and flame retardancy. Specifically, the coating composition of the outer covering tube (77) comprises, based on 100% by weight of the total composition, 33 to 36% by weight of a bio-based thermoplastic polyurethane elastomer as a first component, 15 to 18% by weight of a low-volatility silicone elastomer as a second component, 7 to 10% by weight of a halogen-free phosphorus-based flame retardant as a third component, 5 to 8% by weight of a halogen-free nitrogen-based flame retardant as a fourth component, 5 to 8% by weight of magnesium hydroxide as a fifth component, 4 to 7% by weight of aluminum hydroxide as a sixth component, 4 to 7% by weight of an epoxidized vegetable oil or bio-based polyester plasticizer as a seventh component, 2 to 4% by weight of silver-zinc antibacterial glass powder or zinc antibacterial ceramic powder as an eighth component, and at least one of silica, kaolin, montmorillonite, and cellulose nanofiber as a ninth component, and a wear-resistant and reinforcing filler 2 to It contains 5% by weight. In the third invention of the present invention, the outer covering tube (77) is not a simple insulating covering material, but a functional protective layer designed to withstand an environment in which the heating element (130) for the bed is exposed to the user's body weight, sweat, moisture, friction with bedding, and repeated folding for a long time.

[0251] The bio-based thermoplastic polyurethane elastomer, which is the first component of the outer covering tube (77), forms the main mechanical framework of the covering composition and provides flexural resistance, elastic recovery, and covering adhesion. If this component is less than 33% by weight, the tensile strength, elasticity, and wear resistance of the covering layer may be insufficient, and if it exceeds 36% by weight, the relative content of other flame-retardant components, antibacterial components, and reinforcing components may decrease, thereby reducing the composite functionality required for electric heating wires for beds. The low-volatility silicone elastomer, which is the second component, complements the flexibility, low odor, heat resistance, and skin contact stability of the covering layer. If this component is less than 15% by weight, low odor and soft flexibility may be insufficient, and if it exceeds 18% by weight, increased surface adhesion, reduced adhesion stability, or reduced mechanical strength may occur. Therefore, the range of the first and second components is a critical range that allows the outer covering tube (77) to withstand repeated bending and weight loads without being too hard or too soft.

[0252] The third component, a halogen-free phosphorus-based flame retardant, in an amount of 7 to 10 weight percent, and the fourth component, a halogen-free nitrogen-based flame retardant, in an amount of 5 to 8 weight percent, impart composite flame retardancy to the outer covering tube (77). The phosphorus-based flame retardant contributes to the formation of a carbonized layer and suppression of combustion, while the nitrogen-based flame retardant can assist in the generation of non-combustible gas or expandable flame retardant action. If the third component is less than 7 weight percent or the fourth component is less than 5 weight percent, the flame retardancy required around the heating element (130) of the electric heating element (100) may not be sufficient. Conversely, if the third component exceeds 10 weight percent or the fourth component exceeds 8 weight percent, the elasticity, extrudability, surface stability, and flexural strength of the covering composition may be reduced. The fifth component, magnesium hydroxide, in an amount of 5 to 8 weight percent, and the sixth component, aluminum hydroxide, in an amount of 4 to 7 weight percent, perform endothermic decomposition and inorganic flame retardant auxiliary functions. If each of these components is below the lower limit, the heat absorption and flame retardant auxiliary effects are insufficient in the event of heat generation, and if they exceed the upper limit, the outer covering tube (77) becomes hardened, which may reduce durability against repeated folding. Therefore, the combination range of phosphorus-based flame retardants, nitrogen-based flame retardants, magnesium hydroxide, and aluminum hydroxide is a critical composition range for simultaneously securing flame retardancy, flexibility, and low odor without using halogen-based flame retardants.

[0253] The seventh component, an epoxidized vegetable oil or bio-based polyester plasticizer, complements the flexibility, low-temperature flexibility, and eco-friendliness of the covering composition. If this component is less than 4 weight percent, the outer covering tube (77) is not sufficiently flexible, and cracks may occur during folding or repeated loading of the electric heating pad (100); if it exceeds 7 weight percent, migration to the surface of the covering layer, stickiness, reduced heat resistance, or reduced long-term stability may occur. The eighth component, a silver-zinc antibacterial glass powder or a zinc antibacterial ceramic powder, performs the function of suppressing bacteria or odor generation in a high-humidity environment inside the bedding. If this component is less than 2 weight percent, the antibacterial function may not be sufficient, and if it exceeds 4 weight percent, the flexibility and surface uniformity of the covering layer may be reduced. The ninth component, an abrasion-resistant and reinforcing filler, includes at least one of silica, kaolin, montmorillonite, and cellulose nanofibers to reinforce the abrasion resistance, scratch resistance, dimensional stability, and repeated bending durability of the outer sheathing tube (77). If this component is less than 2 weight percent, the reinforcing effect is insufficient, and if it exceeds 5 weight percent, the coating layer may become hardened or the extrusion moldability may be reduced. Therefore, the range of the seventh to ninth components is a critical range for simultaneously achieving flexibility, antibacterial properties, abrasion resistance, and long-term use stability of the outer sheathing tube (77).

[0254] Referring to FIGS. 4 and 5, the heat storage layer (150), heating means (70), and outer covering tube (77) of the third invention of the present invention are directly coupled with sleep state linkage control of a portable controller (360) and an integrated control unit (700). When a user selects a deep sleep mode through the portable controller (360), the integrated control unit (700) can adjust the power supply duty ratio and target temperature of the heating unit (130) according to a multi-stage thermal control profile that includes at least one of a preheating section before entering sleep, a cooling section after estimating entry into sleep, a deep sleep maintenance section, a section corresponding to increased tossing and turning, and a gradual heating section before waking up. At this time, the heating core (71) of the heating means (70) generates the necessary heat according to the control of the integrated control unit (700), the heat storage layer (150) temporarily stores the heat of the heating core (71) or releases it gradually to suppress sudden changes in surface temperature, and the outer covering tube (77) maintains the durability of the heating means (70) against repeated bending, moisture contact, and wear. Accordingly, the third invention of the present invention supports the perceived temperature stability and long-term safety, which are difficult to achieve with control algorithms alone, through the physical structure and composition range.

[0255] Referring to FIGS. 6 to 10, the third invention of the present invention also performs an important function in an embodiment combined with a bed auxiliary air conditioning unit, a heat pump device (400), a water circulation cycle (50), and a composite heat source supply unit (800). During heating operation, the condensation heat of the heat pump device (400) or the auxiliary heat of the composite heat source supply unit (800) can be supplied to the area around the bed through the air passage (910) under the bed or the outer discharge unit (920), and at this time, the heat storage layer (150) of the electric heating pad unit (100) gradually stores and releases the heat formed by electric heating and auxiliary heating, thereby reducing surface temperature fluctuations in the central contact heating area. When operating in cooling or dehumidification mode, a risk of condensation may occur depending on the relationship between the humidity inside the bed and the surface temperature of the electric heating pad. The outer covering tube (77) suppresses moisture penetration at the outermost edge of the heating means (70), and the heat storage layer (150) gently releases the minute current or residual heat of the heating part (130), thereby mitigating local cooling of the electric heating pad (100). Thus, the third invention of the present invention is combined with the condensation prevention, electromagnetic wave attenuation, and safety cutoff cooperative control flow of FIG. 11 to provide a structure capable of physically responding to the risk of condensation or electrical risk calculated in the control.

[0256] The inventive step of the third invention of the present invention lies in the fact that the heat storage layer (150), the heating means (70), and the outer covering tube (77) are not arranged independently in parallel, but are combined to handle different risks in stages in a special environment of long-term contact use while sleeping. The heat storage layer (150) suppresses sudden changes in perceived temperature even when the output of the heating unit (130) is lowered according to the sleep state-linked heating control of the integrated control unit (700), and the heating means (70) provides heat stability, insulation, reinforcement, and auxiliary shielding through a multi-layer structure of a carbon fiber heating core (71), a core tube (72), a carbon fiber reinforcing yarn (73), an inner covering tube (74), a copper outer tube (75), an aluminum foil (76), and an outer covering tube (77), and the outer covering tube (77) simultaneously satisfies the requirements for long-term skin contact, moisture exposure, repeated bending, and flame retardancy through an antibacterial and eco-friendly durable coating composition. In particular, the composition ratio of the heat storage layer (150) and the composition ratio of the outer covering tube (77) are not merely a range of arbitrary selection, but a critical range for controlling the trade-off between flexibility, heat storage, thermal conductivity, flame retardancy, antibacterial properties, low odor, and wear resistance.

[0257] Consequently, the third invention of the present invention can be organically combined with the overall system configuration of FIG. 1, the stacked structure of the electric heating pad part (100) of FIG. 2, the multilayer covering structure of the heating means (70) of FIG. 3, the portable controller (360) of FIG. 4, the multi-stage thermal control profile linked to the sleep state of FIG. 5, the bed auxiliary air conditioning structure of FIG. 6, the heat pump heating, cooling, and dehumidification operation of FIG. 7 and FIG. 8, the composite heat source and heat pump configuration of FIG. 9 and FIG. 10, and the condensation prevention, electromagnetic wave attenuation, and safety cutoff cooperative control flow of FIG. 11. The third invention of the present invention ensures that the heating element (130) does not merely generate heat, but also mitigates temperature fluctuations during sleep stages through the heat storage layer (150), forms an auxiliary shielding path linked to the grounded shielding element (120) through the copper outer tube (75) and aluminum foil (76), and secures antibacterial properties, eco-friendliness, durability, flexibility, low odor, skin contact safety, and flame retardancy suitable for long-term bed use through the outer covering tube (77). Therefore, unlike conventional simple heating wire covering structures or simple heat storage layer addition structures, the third invention of the present invention is an invention that simultaneously achieves thermal stability, electrical safety, moisture stability, long-term durability, and user contact safety required in a deep sleep induction thermal control system through the organic combination of the critical range of the composition and the multilayer structure, and possesses sufficient technical significance and inventive step in terms of the combination relationship of the composition, the mechanism of operation, and the effect.

[0259] The fourth invention of the present invention is described below.

[0260] The fourth invention of the present invention relates to a grounded type sleep-inducing thermal-based temperature control system according to the third invention of the present invention, wherein the invention specifies a specific operation structure of a portable controller (360) so that a user can intuitively operate the heating temperature, operating time, sleep mode, and electromagnetic wave attenuation state of the electric heating pad (100), and a control mechanism in which the integrated control unit (700) converts the operation value into sleep state-linked thermal control and grounded type shielding control.

[0261] The fourth invention of the present invention embodies a portable controller (360) corresponding to the user input section of the overall system configuration of FIG. 1, and as shown in FIG. 4, the portable controller (360) comprises a temperature display window (361) positioned on the upper front side to display a set temperature or current control temperature as a number, a time display window (362) positioned spaced apart from the temperature display window (361) to display a set operating time or remaining operating time as a number, a deep sleep mode button (363) positioned below the temperature display window (361) or the time display window (362), an electromagnetic wave attenuation button (364) positioned spaced apart from the deep sleep mode button (363), a temperature increase button (365) to increase the set temperature displayed on the temperature display window (361), a temperature decrease button (366) to decrease the set temperature, a time increase button (367) to increase the set operating time displayed on the time display window (362), a time decrease button (368) to decrease the set operating time, and whether the deep sleep mode button (363) is input or It includes a sleep mode indicator lamp (369) indicating whether the sleep mode is running, and an electromagnetic wave attenuation indicator lamp (370) indicating whether the electromagnetic wave attenuation button (364) is input or whether the grounding shield (120) is activated. This configuration is not merely an operation panel with buttons and a display window arranged, but a user-system interlocking structure that allows the user to check and control the user's intention to set the sleep mode, the automatic control state during sleep, the activation state of the grounding shield (120), and the electrical abnormal state through a single portable interface.

[0262] Referring to FIG. 4, the temperature display window (361) and the time display window (362) clearly display the size variable and the time variable of the heat control, respectively, to the user. The user can adjust the set temperature of the electric heating pad (100) through the temperature increase button (365) and the temperature decrease button (366), and can adjust the operating time through the time increase button (367) and the time decrease button (368). However, in the fourth invention of the present invention, the temperature displayed in the temperature display window (361) and the time displayed in the time display window (362) are not simple fixed input values, but are default values ​​that can be converted into a temperature and time profile for deep sleep mode by the integrated control unit (700). That is, the temperature and time initially set by the user are interpreted by the integrated control unit (700) together with the detection value of the environment sensor unit (200) and the judgment value of the sleep state detection unit (300), and as the sleep state changes to a pre-sleep state, sleep state, deep sleep state, increased tossing and turning state, or pre-awakening state, at least one of the target surface temperature, power supply duty ratio, central heat generation amount, and remaining operating time is automatically corrected. Accordingly, the portable controller (360) functions not as a simple manual controller, but as a control input terminal that transmits the user's set value to the intelligent sleep control algorithm of the integrated control unit (700).

[0263] The deep sleep mode button (363) has particularly important technical significance in the fourth invention of the present invention. The integrated control unit (700) keeps the deep sleep mode indicator lamp (369) in an off state before the deep sleep mode button (363) is input, and when the deep sleep mode button (363) is input, it turns on or flashes the deep sleep mode indicator lamp (369) and converts the set temperature of the temperature display window (361) and the set operating time of the time display window (362) into a temperature and time profile for deep sleep mode. This temperature and time profile for deep sleep mode may be composed of a multi-stage thermal control profile including at least one of a preheating section before falling asleep, a cooling section after falling asleep, a deep sleep maintenance section, a section corresponding to increased tossing and turning, and a gradual heating section before waking up, as shown in FIG. 5. In the preheating section before entering the bed, the amount of heat generated in the central part of the electric heating pad (100) can be controlled to be relatively high so that the user does not feel cold when entering the bed, and in the cooling section after estimating entry into the bed, the power duty ratio or target surface temperature can be lowered so that sweating, stuffiness, or tossing and turning does not increase due to excessive heat stimulation after the user falls asleep. In the deep sleep maintenance section, control centered on low power or slow heat dissipation is performed to maintain sleep continuity, and in the section responding to increased tossing and turning, the temperature inside the bed, humidity inside the bed, and the surface temperature of the electric heating pad are detected by the environment sensor section (200) together to perform corrections to respond to overheating or humid heat discomfort. In the gradual heating section before waking up, the cold sensation immediately before waking up can be reduced through gradual heating rather than rapid high-temperature heating.

[0264] In the fourth invention of the present invention, the integrated control unit (700) corrects at least one of the central heating amount of the electric heating pad unit (100), the power supply duty ratio, the target surface temperature, and the remaining operating time in each section of the multi-stage heat control profile. This control is performed based on the interoperability of the electric heating pad unit (100), the environment sensor unit (200), the sleep state detection unit (300), and the integrated control unit (700) of FIG. 1, and is implemented as actual heat by the stacked structure of the electric heating pad unit (100) of FIG. 2 and the heating structure of the heating means (70) of FIG. 3. For example, when the integrated control unit (700) lowers the power supply duty ratio in a deep sleep state, the temperature distribution control layer (140) and the heat storage layer (150) of FIG. 2 mitigate the rapid drop in surface temperature, and the heating means (70) of FIG. 3 generates heat stably even under low power supply conditions. Therefore, the deep sleep mode control of the fourth invention of the present invention is not merely a program that lowers the temperature over time, but a practical deep sleep induction control that combines the user's sleep stage with the physical structure of the electric heating pad (100). In this respect, the fourth invention of the present invention is distinguished from conventional “sleep mode” or “timer mode.” Conventional methods often stop at lowering the temperature or cutting off the power after a certain period of time, but the fourth invention of the present invention reconstructs the set temperature and set operating time into a sleep stage temperature and time profile based on the input of the deep sleep mode button (363), and the integrated control unit (700) dynamically corrects the heating conditions of each section by using the information from the environment sensor unit (200) and the sleep state detection unit (300) together.

[0265] The electromagnetic wave attenuation button (364) is configured to link the electromagnetic wave attenuation or grounding safety control of the grounded shielding unit (120) with user operation. When the electromagnetic wave attenuation button (364) is input, the integrated control unit (700) can connect the shielding electrode of the grounded shielding unit (120) to a grounding terminal, or switch at least one of the current waveform, current phase, current duty ratio, or zero-crossing switching timing of the heating unit (130) to an electromagnetic wave reduction condition. Here, the electromagnetic wave attenuation control is not limited to a physical connection of simply connecting the shielding electrode to a grounding wire, but can also include control that corrects the electrical driving conditions of the heating unit (130) itself to a condition where electromagnetic waves are generated less. For example, by adjusting the current phase or zero-crossing switching timing, electromagnetic wave components that may be generated by rapid current changes in the heating unit (130) can be reduced, and by correcting the current duty ratio, unnecessary high-output current can be reduced while maintaining the necessary warmth sensation during deep sleep. In addition, when the copper outer tube (75) and aluminum foil (76) of FIG. 3, and the first shielding electrode (121) and second shielding electrode (122) of FIG. 2 are linked with the grounded shielding part (120), the operation of the electromagnetic wave attenuation button (364) can function as a control trigger to activate or monitor both surface shielding and line shielding.

[0266] The electromagnetic wave attenuation indicator lamp (370) is configured to indicate whether the electromagnetic wave attenuation button (364) is input or whether the grounding shielding unit (120) is activated. In the fourth invention of the present invention, the electromagnetic wave attenuation indicator lamp (370) is not a simple operation indicator, but a safety indicator that can distinguish between the normal active state and the abnormal state of the grounding shielding unit (120) and provide this information to the user. That is, if a grounding abnormality, leakage current abnormality, or a decrease in insulation resistance of the grounding shielding unit (120) is detected, the integrated control unit (700) can display the electromagnetic wave attenuation indicator lamp (370) in a warning flashing state that is distinct from the normal lighting state, and limit the output of the heating unit (130). This control corresponds to the condensation prevention, electromagnetic wave attenuation, and safety cutoff coordinate control flow illustrated in FIG. 11. Since the electric heating pad for beds is a device used with the user in contact with the body for a long time while sleeping, it is difficult for the user to immediately recognize the occurrence of a grounding abnormality or leakage current abnormality. The fourth invention of the present invention performs user recognition and device safety control simultaneously by linking the warning flashing of the electromagnetic wave attenuation indicator lamp (370) with the output limiting of the heating unit (130). Therefore, the fourth invention of the present invention provides substantial effects not only in terms of ease of use but also in terms of electrical safety.

[0267] Referring to FIG. 11, the integrated control unit (700) does not treat deep sleep mode control, electromagnetic wave attenuation control, and safety cutoff control as separate functions, but can perform cooperative control by determining the control priority as needed. For example, even if deep sleep mode is running, if a grounding abnormality, leakage current abnormality, or a decrease in insulation resistance is detected, the integrated control unit (700) can limit the output of the heating unit (130) by prioritizing the grounding condition and leakage current safety control over the deep sleep heating pattern. In addition, if an increase in humidity or an increased risk of condensation is detected in the bed, the surface temperature and current duty cycle of the electric heating pad (100) can be adjusted while applying condensation prevention control first. In this control structure, the portable controller (360) is not limited to a terminal where the user inputs setting values, but also functions as a status notification device that indicates whether the current system is operating in deep sleep mode, whether the electromagnetic wave attenuation function is activated, or whether an electrical abnormality has occurred. Therefore, the fourth invention of the present invention enables the user to intuitively understand the system state before falling asleep or after waking up, even if the user cannot directly check the detailed control process during sleep.

[0268] The inventive step of the fourth invention of the present invention lies not in the buttons and display window of the portable controller (360) itself, but in the organic combination relationship in which the operation value of the portable controller (360) is converted by the integrated control unit (700) into a temperature and time profile for deep sleep mode and electromagnetic wave attenuation and grounding safety control. Conventional electric heating pad controllers generally remain at the level of providing temperature rise, temperature fall, time setting, and power on / off functions. Even if some products have a sleep mode or timer function, it is difficult to present a structure that dynamically corrects the current conduction conditions and safety cutoff conditions of the heating element by considering the user's sleep stage, temperature and humidity inside the bed, the active state of the grounded shielding part, leakage current abnormalities, and insulation resistance reduction together. The fourth invention of the present invention uses the input of the deep sleep mode button (363) not as a simple mode selection but as a condition for switching to a multi-stage thermal control profile for each sleep stage, and links the input of the electromagnetic wave attenuation button (364) not as a simple display function but with the connection of the shielding electrode of the grounded shielding part (120), correction of the current waveform, phase, duty ratio, and zero-crossing switching timing of the heating part (130), and abnormal state display and output limit control. Such a configuration combines the user operation interface, thermal control linked to the sleep state, electromagnetic wave attenuation control, and electrical safety control within the control system of a single portable controller (360) and an integrated control unit (700), which is difficult to easily derive from a conventional simple temperature control type controller.

[0269] Consequently, the fourth invention of the present invention is organically combined with the integrated control unit (700), environment sensor unit (200), sleep state detection unit (300), electric heating pad unit (100), and grounded shielding unit (120) of FIG. 1, the sleep state-linked multi-stage thermal control profile of FIG. 5, and the condensation prevention, electromagnetic wave attenuation, and safety blocking cooperative control flow of FIG. 11, centered around the portable controller (360). The user can simply set the temperature and time through the portable controller (360), execute thermal control for each sleep stage through the deep sleep mode button (363), and activate the electromagnetic wave attenuation function of the grounded shielding unit (120) through the electromagnetic wave attenuation button (364). The integrated control unit (700) corrects the central heating amount, current duty ratio, target surface temperature, and remaining operating time of the electric heating pad unit (100) based on this input, and if a grounding abnormality, leakage current abnormality, or insulation resistance decrease is detected, it limits the output of the heating unit (130) while displaying the electromagnetic wave attenuation indicator lamp (370) in a warning flashing state. Accordingly, the fourth invention of the present invention is an invention that significantly improves the safety, comfort, and reliability of the electric heating pad unit (100) used for a long time without monitoring during sleep by integrating sleep-inducing thermal control and electrical safety control into an intuitive operation and display structure while increasing user convenience of operation.

[0272] The fifth invention of the present invention is described below.

[0273] The fifth invention of the present invention relates to a grounded type sleep-inducing thermal-based temperature control system according to the fourth invention of the present invention, which goes beyond the method of controlling the bed environment solely by the central contact heat of the electric heating pad (100) and adds a bed auxiliary air conditioning unit positioned at the bottom or side of the bed to supply warmth or cold air to the interior space of the bed, the lower space, or the interior space of the bedding, and controls the central contact heat of the electric heating pad (100) and the air control of the outer discharge unit (920) in conjunction with each other while partitioning them from one another by an integrated control unit (700).

[0274] The fifth invention of the present invention is an invention that is organically combined with the overall system configuration of FIG. 1, the portable controller (360) of FIG. 4, the sleep state-linked multi-stage thermal control profile of FIG. 5, the air supply structure of the bed auxiliary air conditioning unit of FIG. 6, and the condensation prevention, electromagnetic wave attenuation, and safety cutoff cooperative control flow of FIG. 11. According to claim 5, the fifth invention of the present invention is characterized in that the bed auxiliary air conditioning unit includes an air conditioning heat source unit, an air passage under the bed (910), an outer discharge unit (920), an outer distribution duct, and an outer air volume control damper, and the central contact heating area of ​​the electric heating unit (100) and the air control area of ​​the outer discharge unit (920) are partitioned from each other, and the integrated control unit (700) controls at least one of the heating operation of the electric heating unit (100) and the warm air supply, cold air supply, dehumidification supply, or bedding drying operation of the bed auxiliary air conditioning unit in conjunction.

[0276] Referring to FIG. 6, the bed auxiliary air conditioning unit may include an air conditioning heat source unit positioned at any one of the lower part of the bed (B), the side of the bed, the headboard, the bedroom floor, or a movable case. The air conditioning heat source unit may be understood as a configuration that generates warm air, cold air, dehumidified air, or dry air, or receives air conditioning energy from an external heat source or recovered heat. The warm air or cold air generated or recovered from the air conditioning heat source unit is guided to the lower part of the bed (B) through the lower bed air passage (910) and distributed to the outer discharge unit (920) via the outer distribution duct. The outer discharge unit (920) is positioned at least one of the left outer, right outer, upper outer, or lower outer of the electric heating pad unit (100) to discharge the air delivered through the lower bed air passage (910) toward the upper surface of the bed or toward the interior of the bedding. The outer airflow control damper controls the airflow or discharge direction of the air supplied to the outer discharge section (920), thereby preventing the airflow within the bed from being excessively concentrated in a specific area or forming a strong airflow directly in the center of the user's body.

[0277] The core of the fifth invention of the present invention lies in the fact that the central contact heating area of ​​the electric heating pad (100) and the air control area of ​​the outer discharge part (920) are separated from each other. The electric heating pad (100) is positioned in the center of the upper surface of the bed (B) to provide contact heat to the lower central part of the user's body. This central part is in the closest contact with the user's back, waist, pelvis, thighs, etc., during sleep, and is an area where body pressure and heat transfer are concentrated. Therefore, the electric heating pad (100) is suitable for providing precise and stable heat in this central contact area. On the other hand, the temperature and humidity of the entire bed are difficult to control uniformly solely through central contact heating, and heat stagnation, moisture accumulation, or cold air penetration may occur in the outer part of the bedding, the space under the bed, the edge area inside the duvet, or the air layer between the mattress and the bedding.

[0278] Accordingly, the fifth invention of the present invention adopts a dual bed environment control structure in which an outer discharge unit (920) is placed in the outer region of the electric heating pad unit (100), so that the central part is controlled by contact heat and the outer part is controlled by air flow.

[0279] This compartmentalized structure is not merely a design that adds air vents next to the electric heating pad. Conventional electric heating pads focus on directly heating the lower part of the user's body, making it difficult to actively control the air layer inside the bed, moisture on the outer edge of the bedding, cold air beneath the bed, or the dryness inside the bedding. Conversely, while simple bed air conditioning systems can supply air, they struggle to provide stable contact heat to the lower part of the user's body, and the air supply can cause instability in the user's perceived temperature or lead to discomfort from airflow during sleep.

[0280] The fifth invention of the present invention separates the central contact heating of the electric heating pad (100) and the air control of the outer discharge part (920) from each other, and by having the integrated control part (700) control the two in conjunction, it simultaneously secures the stability of contact heating and the expandability of air conditioning control. That is, the fifth invention of the present invention is a composite bed control technology that performs precise heat transfer in the central part and distributes warm air, cold air, dehumidified air, or dry air in the outer part.

[0281] The integrated control unit (700) controls the central contact heating of the electric heating pad unit (100) and the air control of the outer discharge unit (920) so that overheating or condensation does not occur between them, based on the temperature inside the bed, humidity inside the bed, surface temperature of the heating pad, the user's sleep state, and whether the portable controller (360) inputs a deep sleep mode. For example, when the user selects a deep sleep mode and the sleep state detection unit (300) determines the state before entering sleep, the integrated control unit (700) can preheat the lower central part of the user's body through the heating of the central part of the electric heating pad unit (100), while supplying low-airflow warmth to the inside of the bedding or the outer area of ​​the bed through the outer discharge unit (920). In this case, contact heating in the central part and heat supply in the outer part are performed simultaneously, but the integrated control unit (700) monitors the surface temperature of the heating pad and the temperature inside the bed and adjusts the power duty of the electric heating pad unit (100) or the air volume of the outer discharge unit (920) so that an excessive temperature rise does not occur.

[0282] Conversely, if it is determined that the user has already entered a sleep state or a deep sleep state, the integrated control unit (700) can reduce the heat output of the electric heating pad unit (100) and, if necessary, maintain low-airflow warm air supply or air circulation through the outer discharge unit (920). In this case, even if the direct heat output of the electric heating pad unit (100) is reduced, the air layer inside the bedding is not rapidly cooled, so the user does not feel a sudden cold sensation. In addition, since the air control of the outer discharge unit (920) is distributed to the outer edge of the bed or the inner space of the bedding without directly and strongly stimulating the central part of the user's body, it can reduce airflow discomfort during sleep and increase the temperature uniformity of the entire bed. This control is connected to the temperature reduction section and the deep sleep maintenance section after sleep estimation in FIG. 5, and the bed auxiliary air conditioning unit of the fifth invention of the present invention performs the role of compensating for the decrease in perceived temperature due to the reduction in heat output of the electric heating pad unit (100).

[0283] The fifth invention of the present invention has significant technical importance in terms of preventing condensation. The interior of the bed is prone to becoming high in humidity due to the user's body temperature, sweating, the thermal insulation of the bedding, and indoor humidity. Additionally, when cold air supply or dehumidification operation is performed in parallel, the difference between the surface temperature of the electric heating pad unit (100) and the dew point inside the bed is reduced, which may lead to the occurrence of condensation. In the fifth invention of the present invention, the integrated control unit (700) identifies the temperature inside the bed, the humidity inside the bed, and the surface temperature of the heating pad through the detection value of the environment sensor unit (200), and links the dehumidification supply or bedding drying operation through the outer discharge unit (920) with the heating operation of the electric heating pad unit (100). For example, when the humidity inside the bed is high and the risk of condensation increases, the integrated control unit (700) can supply dehumidified air or drying air through the outer discharge unit (920) and finely adjust the heating output or current duty cycle so that the surface temperature of the electric heating pad unit (100) does not approach the dew point excessively. Accordingly, the central contact heating and the perimeter dehumidifying air conditioning do not conflict with each other and operate cooperatively toward the same objective of suppressing condensation.

[0284] In addition, the fifth invention of the present invention is also effective in responding to increased tossing and turning. The causes of increased tossing and turning during sleep by a user are not limited to a simple sensation of low temperature. A sensation of overheating, increased humidity inside the bedding, heat concentration in specific areas, penetration of cold air from the outer edges, or air stagnation can all be causes of increased tossing and turning. In the fifth invention of the present invention, when the sleep state detection unit (300) determines an increased tossing and turning state, the integrated control unit (700) can estimate the cause by interpreting the detection value of the environment sensor unit (200) together. If the surface temperature of the floor mat is high and the temperature inside the bed is high, the heat generation in the central part of the electric floor mat unit (100) can be lowered and air circulation through the outer discharge unit (920) can be increased. If the humidity inside the bed is high, dehumidification supply through the outer discharge unit (920) can be prioritized. If the temperature in the center of the bed is appropriate but cold air inflow from the outer edges is estimated, the supply of warm air through the outer discharge unit (920) can be increased. As such, the fifth invention of the present invention is progressive in that it does not simply resolve increased tossing and turning by raising the temperature, but rather responds according to the cause by distinguishing between central contact heating and external air conditioning.

[0285] The fifth invention of the present invention may have a greater effect when combined with a heat pump device (400), a water circulation cycle (50), and a composite heat source supply unit (800) as illustrated in FIGS. 7 to 10. When the air conditioning heat source unit includes a heat pump device (400), the heat generated from the condenser or the cooling / dehumidifying air formed from the evaporator may be supplied to the outside of the bed or inside the bedding through the lower air passage (910) and the outer discharge unit (920). At this time, the electric heating pad unit (100) is responsible for direct heat to the lower central part of the user's body, and the heat pump device (400) and the bed auxiliary air conditioning unit are responsible for the air temperature, humidity, and dryness of the entire bed. In addition, when solar heat, geothermal heat, residual heat of the electric heating pad unit (100), or waste heat within the bed is utilized through the combined heat source supply unit (800), the integrated control unit (700) can reduce the heat output of the electric heating pad unit (100) by considering the supply amount of the auxiliary heat source. Accordingly, energy efficiency can be increased while preventing overheating.

[0286] Referring to FIG. 11, the integrated control unit (700) of the fifth invention of the present invention can determine the priority of overheat prevention control, condensation prevention control, electromagnetic wave attenuation control, grounding state / leakage current safety control and deep sleep thermal pattern control. When a bed auxiliary air conditioning unit is added, the integrated control unit (700) can not only control the amount of heat generated by the electric heating pad unit (100), but also determine the airflow of the outer discharge unit (920), the discharge direction, whether to supply warm air, whether to supply cold air, whether to supply dehumidification, or whether to operate the bedding drying operation. For example, if the risk of overheating is high, the heat output of the electric heating pad unit (100) can be lowered and the external air circulation can be increased; if the risk of condensation is high, the supply of dehumidifying or dry air through the external discharge unit (920) can be prioritized; and if a grounding abnormality or leakage current abnormality is detected, the output of the electric heating pad unit (100) can be limited, while maintaining minimal comfort by using non-contact air conditioning of the bed auxiliary air conditioning unit as needed. Such cooperative control implies that the fifth invention of the present invention is not a simple blower unit structure, but a structure that expands control resources to maintain both safety and comfort during sleep.

[0287] The inventive step of the fifth invention of the present invention lies in the combination of a spatial division in which an electric heating pad section (100) is placed in the central part of the bed and an outer discharge section (920) is placed in the outer part, and a functional division in which an integrated control unit (700) controls this in conjunction according to the sleeping state and bed environment. Conventional electric heating pads generally heat the entire pad without distinguishing between the central and outer parts, or perform simple heating according to the user's set temperature. Conventional bed air conditioning devices can supply air, but they have limitations in stably providing direct contact heat to the lower central part of the user's body. The fifth invention of the present invention compensates for the disadvantages of these two methods by ensuring that the central part is precisely contact-heated by the electric heating pad part (100), and the outer part is supplied with warm air, cold air, dehumidified air, or dry air by the outer discharge part (920), and the integrated control part (700) dynamically adjusts the operating conditions of both based on the detection value of the environment sensor part (200), the judgment value of the sleep state detection part (300), and whether the portable controller (360) inputs a deep sleep mode. This configuration simultaneously provides effects such as prevention of redundant overheating, suppression of condensation, uniformization of bed temperature, maintenance of perceived temperature for each sleep stage, and drying of bedding, which are difficult to achieve with a simple parallel combination.

[0288] Consequently, the fifth invention of the present invention combines the bed auxiliary air conditioning unit of Fig. 6 with the basic system of Fig. 1 to partition the central contact heating area of ​​the electric heating pad unit (100) and the air control area of ​​the outer discharge unit (920) from each other, and the integrated control unit (700) controls both in conjunction based on the temperature inside the bed, humidity inside the bed, surface temperature of the heating pad, the user's sleep state, and whether a deep sleep mode is input. Thus, the fifth invention of the present invention supplements the problems of internal humidity, outer cold air, temperature deviation of the entire bed, and drying of the bedding, which are difficult to solve with only the direct heating of the electric heating pad unit (100), through outer air conditioning, and conversely, secures stable contact heat for the central lower body area, which is insufficient with only air control, through the electric heating pad unit (100). Therefore, the fifth invention of the present invention is a composite thermal and air conditioning control system for a bed that improves user comfort, safety, condensation suppression, and energy efficiency in a long-term unmonitored state during sleep, and possesses sufficient technical significance and inventive step in terms of the organic combination relationship of its configuration, operating mechanism, and effect.

[0291] The sixth invention of the present invention is described below.

[0292] The sixth invention of the present invention relates to a grounded type sleep-inducing thermal-based temperature control system according to the fifth invention of the present invention, wherein the air conditioning heat source of the bed auxiliary air conditioning unit is concretized as a heat pump device (400), and the condensation heat of the heat pump device (400) is supplied to the bed under air passage (910) and outer discharge unit (920) through a water circulation cycle (50), thereby organically combining the central contact heat of the electric heating pad unit (100) with the bed under or outer air heat. The sixth invention of the present invention concretizes the heat source structure of the bed auxiliary air conditioning unit among the overall system configuration of FIG. 1, and is closely related to the bed under air passage (910) and outer discharge unit (920) of FIG. 6, the heating operation refrigerant flow path and heat transfer structure of FIG. 7, and the specific configuration of the heat pump device (400) of FIG. 10. The sixth invention of the present invention is centered on a configuration in which a heat pump device (400) comprises a compressor (13), a condenser (14), an evaporator (15), an outdoor unit (16), a heating expansion valve (17), a cooling expansion valve (18), an accumulator (19), an internal heat exchanger (20), a refrigerant flow path changing section, a water circulation cycle (50), and a control device, wherein during heating operation, the condensation heat of the condenser (14) is supplied to the lower space of the bed or the internal space of the bedding through the water circulation cycle (50), a heating section (52), a radiator (53), an air passage under the bed (910), and an outer discharge section (920).

[0294] Referring to FIG. 10, the heat pump device (400) of the sixth invention of the present invention includes a compressor (13) that compresses and discharges a refrigerant. The compressor (13) sucks in a low-temperature, low-pressure gaseous refrigerant and compresses it into a high-temperature, high-pressure refrigerant, and the compressed refrigerant is supplied to a condenser (14) which functions as a condensation heat exchanger for bed air conditioning. The condenser (14) transfers the condensation heat of the high-temperature, high-pressure refrigerant discharged from the compressor (13) to a water circulation cycle (50). Here, the important technical significance of the sixth invention of the present invention is that the condensation heat of the heat pump device (400) is not supplied directly to the bed space as a high-temperature refrigerant, but is transferred to water or a heat medium via a water circulation cycle (50), then exchanges heat with air through a radiator (53), and supplies that air to the bed under air passage (910) and the outer discharge section (920). This indirect heat transfer structure simultaneously ensures safety, temperature buffering, and perceived comfort required for a bed device. That is, since a water circulation cycle (50) and a radiator (53) are interposed between the refrigerant path and the user's bed space, the high-temperature refrigerant is prevented from acting directly on the inside of the bed or the electric heating pad (100), and the supply of warmth can be more gradual and uniform.

[0295] In the sixth invention of the present invention, the heat pump device (400) includes a cooling / dehumidifying evaporator (15) that evaporates a refrigerant during cooling or dehumidifying operation to cool or dehumidify the air inside the bed or the air inside the bedding, and includes an outdoor unit (16) which functions as an outdoor heat exchanger that functions as an evaporator during heating operation and as a condenser during cooling or dehumidifying operation. Additionally, it includes a heating expansion valve (17) that reduces the pressure of the refrigerant during heating operation, a cooling expansion valve (18) that reduces the pressure of the refrigerant during cooling or dehumidifying operation, an accumulator (19) that separates the refrigerant into gaseous refrigerant and liquid refrigerant, and an internal heat exchanger (20) that exchanges heat between the high-pressure refrigerant and the low-pressure refrigerant by having a high-pressure path (20a) through which the high-pressure refrigerant flows and a low-pressure path (20b) through which the low-pressure refrigerant flows. The internal heat exchanger (20) is not a simple auxiliary heat exchanger, but is configured to stabilize the refrigerant state during heating operation through heat exchange between the high-pressure side refrigerant and the low-pressure side refrigerant, and to improve the operational stability of the heat pump device (400) by correcting the thermal conditions of the high-pressure refrigerant before expansion and the low-pressure refrigerant before suction of the compressor. In particular, unlike the overall indoor air conditioning system, the bed air conditioning system targets a space very close to the user's body, so excessive temperature fluctuations, rapid changes in discharge temperature, and refrigerant cycle instability can lead to direct sleep discomfort. The internal heat exchanger (20) alleviates these problems so that the bed auxiliary air conditioning unit can supply more stable warm or cold air.

[0296] Referring to FIGS. 7 and 10, during heating operation, the heat pump device (400) forms a heating refrigerant flow path that sequentially includes a compressor (13), a condenser (14), a high-pressure path (20a) of an internal heat exchanger (20), a heating expansion valve (17), an outdoor unit (16) that functions as an evaporator during heating operation, an accumulator (19), a low-pressure path (20b) of an internal heat exchanger (20), and a compressor (13). In this path, the refrigerant discharged from the compressor (13) condenses in the condenser (14) and transfers heat to the water or heat medium of the water circulation cycle (50), and the refrigerant that has released heat passes through the high-pressure path (20a) of the internal heat exchanger (20) and is depressurized at the heating expansion valve (17). The depressurized refrigerant absorbs heat from the outside air or auxiliary heat source in the outdoor unit (16) and evaporates, and after the liquid refrigerant is separated in the accumulator (19), it returns to the compressor (13) via the low-pressure path (20b) of the internal heat exchanger (20). Unlike conventional heat-generating resistance heating, this refrigerant flow path transfers the heat absorbed from the outside air or heat source side to the bed air conditioning heat through the condenser (14), thereby increasing the efficiency of the bed auxiliary heating relative to the same amount of electricity consumption.

[0297] In addition, compared to the case where the entire bed is heated solely by direct heating of the electric heating pad (100), the warmth is distributed and supplied to the outer part of the bed or the inner space of the bedding through the air passage (910) under the bed and the outer discharge part (920), thereby reducing overheating in the center and mitigating the temperature difference of the entire bed.

[0298] The water circulation cycle (50) includes a liquid passage (51) that receives condensation heat from a condenser (14), a heating section (52) that heats water or a heat medium circulating through the liquid passage (51), and a radiator (53) that exchanges heat between the heat medium and air that has passed through the heating section (52) or the liquid passage (51). The radiator (53) is positioned in an air passage communicating with the lower bed air passage (910) or the outer discharge section (920) to supply warmth to the bed or the interior space of the bedding. This configuration has a significant technical effect in that it does not simply release the condensation heat of the heat pump device (400) into the indoor air, but directs it to the lower bed space or the interior space of the bedding that the user actually experiences while sleeping. In particular, as illustrated in FIG. 6, the electric heating pad (100) provides contact heat to the lower central part of the user's body from the upper central part of the bed (B), and the outer discharge part (920) distributes the heat supplied through the lower air passage (910) of the bed toward the upper surface of the bed or toward the inside of the bedding. Accordingly, the sixth invention of the present invention is configured to separate central contact heating and lower / outer air heating while complementing each other.

[0299] The integrated control unit (700) of the sixth invention of the present invention may be linked with a control device that controls the refrigerant flow path of the heat pump device (400) and the air supply path of the bed auxiliary air conditioning unit. The refrigerant flow path changing unit may include at least one of a high-pressure control valve (21) for cooling, a high-pressure control valve (22) for heating, a low-pressure control valve (23) for heating, a flow rate adjustment unit (24) for controlling the refrigerant flow rate, and a check valve (25) for preventing refrigerant backflow, and these components perform the function of stably changing the refrigerant flow path between cooling operation and heating operation. The sixth invention of the present invention specifically details the refrigerant flow path and condensation heat supply structure during heating operation, but also possesses the possibility of switching to cooling or dehumidification operation. Therefore, the heat pump device (400) of the sixth invention of the present invention is a reversible air conditioning heat source structure that can be expanded to bed auxiliary heating, cooling, or dehumidification operation depending on the season or sleeping environment.

[0300] When explaining the operation of the sixth invention of the present invention from the perspective of sleep control, if the user selects a deep sleep mode through the portable controller (360) and the sleep state detection unit (300) determines the state before falling asleep, the integrated control unit (700) can perform heating operation of the heat pump device (400) along with central contact heating of the electric heating pad unit (100). At this time, the condensation heat of the high-temperature and high-pressure refrigerant discharged from the compressor (13) is transferred to the water circulation cycle (50) through the condenser (14), and the heat medium of the water circulation cycle (50) supplies warmth through the bed under air passage (910) and outer discharge unit (920) while passing through the heating unit (52) and the radiator (53).

[0301] The lower central part of the user's body is rapidly preheated by the electric heating pad (100), and the lower or outer space of the bed is gradually preheated by the supply of warmth using the condensation heat of the heat pump device (400). Accordingly, the user feels sufficient warmth when initially entering the bed, and the problem of overheating only in a specific central part is reduced because the entire bed is preheated uniformly.

[0302] Even if the integrated control unit (700) lowers the power duty ratio or target temperature of the electric heating pad unit (100) after falling asleep or in a deep sleep state, the supply of low-airflow warm air through the radiator (53) can suppress rapid cooling inside the bed. At this time, the advantage of the 6th invention of the present invention is that it can reduce the user's perceived coldness while lowering the direct heat generation of the electric heating pad unit (100). If the heat generation of the electric heating pad unit (100) is continuously maintained at a high level, local overheating, sweating, increased tossing and turning, and reduced sleep continuity may occur. Conversely, if the heat generation is lowered rapidly, a coldness may occur. The 6th invention of the present invention maintains the temperature of the air layer inside the bedding gradually while reducing direct heat generation by supplying the condensation heat of the heat pump device (400) through the air passage (910) under the bed and the outer discharge unit (920). Therefore, the contact heat of the central part of the electric heating pad (100) and the heat pump-based outer and lower heat supply complement each other, so that the conflicting problems of overheating and cold sensation during deep sleep can be simultaneously alleviated.

[0303] The inventive step of the 6th invention of the present invention lies not only in the fact that the heat pump device (400) is adopted as the air conditioning heat source of the bed auxiliary air conditioning unit, but also in the fact that the condensation heat of the heat pump device (400) is configured to be transferred stepwise to the bed or bedding interior space through the water circulation cycle (50), heating unit (52), radiator (53), bed under air passage (910), and outer discharge unit (920). Conventional electric heating pads generally rely on electric resistance heating to directly heat the lower part of the user's body, and conventional heat pump air conditioning units generally perform heating and cooling for the entire indoor space. However, the 6th invention of the present invention compartmentalizes and interlocks the central contact heating of the electric heating pad unit (100) and the condensation heat-based air heating of the heat pump device (400) for the limited micro-space of the bed. In addition, since the condensation heat is not supplied directly from the refrigerant to the bed but is transferred to the radiator (53) through the water circulation cycle (50) and then distributed to the air passage (910) under the bed and the outer discharge section (920), the structure is designed to take into account the prevention of low-temperature burns, temperature buffering, refrigerant safety, and perceived comfort required for a bed device.

[0304] Consequently, the 6th invention of the present invention combines the heat pump device (400) of FIG. 7 and FIG. 10 and the water circulation cycle (50) in the bed auxiliary air conditioning unit of FIG. 6, and supplies the condensation heat of the condenser (14) to the bed under space or bed internal space through the heating unit (52), radiator (53), bed under air passage (910) and outer discharge unit (920).

[0305] Accordingly, the 6th invention of the present invention overcomes the limitations of relying on direct heating of the central part of the electric heating pad (100) and improves the thermal uniformity, energy efficiency, and comfort during sleep of the entire bed by utilizing the thermal efficiency of the heat pump device (400). In addition, since the indirect heat transfer structure through the water circulation cycle (50), the refrigerant stabilization structure including the internal heat exchanger (20), the possibility of switching between heating and cooling through the refrigerant flow path changing part, and the bed warm air supply structure through the radiator (53) are organically combined, the 6th invention of the present invention has sufficient technical significance and inventive step as a bed-specialized composite thermal and air conditioning system that goes beyond the parallel combination of a simple electric heating pad or a general heat pump air conditioning device.

[0308] The seventh invention of the present invention is described below.

[0309] The seventh invention of the present invention relates to an invention in which, in a grounded type sleep-inducing thermal-based temperature control system according to the sixth invention of the present invention, at least one of solar heat, geothermal energy, residual heat of an electric heating pad (100), heat storage of a heat storage layer (150), or waste heat within a bed is recovered and supplied as an auxiliary heat source to the heat pump device (400) in order to increase the heating efficiency of the heat pump device (400).

[0310] The seventh invention of the present invention relates to the heat pump heating operation refrigerant flow path of FIG. 7, the configuration of a combined heat source supply unit utilizing solar heat, geothermal heat, and residual heat from an electric heating pad of FIG. 9, the configuration of a heat pump device of FIG. 10, and the coordinated control flow of FIG. 11. The seventh invention of the present invention is characterized in that the heat pump device (400) further includes a combined heat source supply unit (800), and the combined heat source supply unit (800) includes a solar heat supply unit, a geothermal heat supply unit, and an electric heating pad recovery heat supply unit (495), and these heat sources are selectively supplied to the heat source side of the outdoor unit (16) which functions as an evaporator during heating operation or heating operation.

[0312] Referring to FIG. 9, the combined heat source supply unit (800) includes a solar heat supply unit comprising a solar heat collector (481), a solar heat storage tank (482), a solar heat circulation pump (483), and a solar heat side heat exchanger (484). The solar heat supply unit can recover heat through the solar heat collector (481) during the day or during a time when solar radiation is secured, store it in the solar heat storage tank (482), and then supply it to the heating unit (52) of the heat pump device (400) or the heat source side of the outdoor unit (16) through the solar heat circulation pump (483) and the solar heat side heat exchanger (484). Additionally, the combined heat source supply unit (800) includes a geothermal supply unit comprising a ground heat exchange pipe (471), a geothermal circulation pump (472), a geothermal heat exchanger (473), and a geothermal flow control valve (474).

[0314] The geothermal supply unit assists the temperature of the heat source side of the heat pump device (400) by utilizing ground heat with relatively gentle temperature fluctuations, even when the outdoor unit (16) of the heat pump device (400) has difficulty securing sufficient evaporative heat due to low ambient temperature. Furthermore, the combined heat source supply unit (800) includes an electric heating pad recovery heat supply unit (495) that supplies heat recovered from the lower area of ​​the electric heating pad unit (100), the heat storage layer (150), the air passage under the bed (910), or the air inside the bed to the heat source side of the heating unit (52) or the outdoor unit (16).

[0315] The electric heating pad heat recovery supply unit (495) may include at least one of a heat recovery suction duct (496), a heat recovery opening / closing damper (497), a heat recovery temperature sensor (498), a heat recovery heat exchanger, and a heat recovery circulation fan or a heat recovery circulation pump.

[0316] An important point in the seventh invention of the present invention is that the combined heat source supply unit (800) is not simply configured to arrange multiple heat sources in parallel, but selectively supplies solar heat, geothermal heat, and electric heating pad recovery heat to different heat demand points of the heat pump device (400). The combined heat source supply unit (800) includes a first auxiliary heat source flow path that directly supplies heat supplied from the solar heat supply unit, the geothermal heat supply unit, and the electric heating pad recovery heat supply unit (495) to the heating unit (52), and a second auxiliary heat source flow path that supplies heat to the outside air intake side, the outside air passage side, or the area adjacent to the outdoor unit heat exchange fins during heating operation. The first auxiliary heat source flow path supplements the amount of auxiliary heating heat for the bed that may be insufficient with only the condensation heat of the condenser (14) by auxiliary heating the water or heat medium of the water circulation cycle (50). On the other hand, the second auxiliary heat source path supplies auxiliary heat to the heat source side of the outdoor unit (16) which functions as an evaporator during heating operation, thereby increasing the evaporation temperature or evaporation pressure of the refrigerant and, as a result, reducing the compression ratio burden of the compressor (13). That is, the first auxiliary heat source path is a path that directly assists in heat dissipation on the bed side, and the second auxiliary heat source path is a path that increases the operating efficiency of the heat pump refrigerant cycle itself.

[0317] Referring to FIGS. 7 and FIGS. 10, during heating operation, the heat pump device (400) forms a heating refrigerant flow path that sequentially includes a compressor (13), a condenser (14), a high-pressure path (20a) of an internal heat exchanger (20), a heating expansion valve (17), an outdoor unit (16), an accumulator (19), a low-pressure path (20b) of an internal heat exchanger (20), and a compressor (13). At this time, if the outside temperature is low, it is difficult for the refrigerant in the outdoor unit (16) to absorb sufficient heat, and the heating efficiency may decrease due to a decrease in evaporation pressure and an increase in compression ratio. To solve this problem, the seventh invention of the present invention supplies heat recovered from a solar heat supply unit, a geothermal heat supply unit, or an electric heating pad recovery heat supply unit (495) to the outside air intake side, the outside air passing side, or the area adjacent to the heat exchange fin of the outdoor unit (16) through a second auxiliary heat source path. Accordingly, the temperature of the air or heat source passing through the outdoor unit (16) increases, the evaporation temperature or evaporation pressure of the refrigerant increases, and the compressor (13) is reduced from needing to operate at an excessively high compression ratio to obtain the same condensation temperature. Therefore, the seventh invention of the present invention is a structure that improves heating efficiency by improving the refrigerant cycle conditions of the heat pump device (400), rather than simply supplying additional warmth to the bed.

[0318] Additionally, the first auxiliary heat source path directly supplies solar heat, geothermal heat, or recovered heat from the electric heating pad to the heating section (52) or water circulation cycle (50), thereby enabling stable maintenance of auxiliary heating of the bed through the radiator (53) even when the amount of heat recovered from the condenser (14) is insufficient. For example, in the preheating section before entering the bed, the supply of warm air through the air passage (910) under the bed and the outer discharge section (920) may be required along with central contact heating of the electric heating pad section (100). At this time, if sufficient heat is stored in the solar heat storage tank (482), if stable geothermal heat is secured through the underground heat exchange pipe (471), or if residual heat remains in the lower area of ​​the electric heating pad section (100) or the heat storage layer (150), the integrated control section (700) can open the first auxiliary heat source path to auxiliary heat the heat medium of the heating section (52) or water circulation cycle (50). Accordingly, the preheating speed and thermal uniformity of the entire bed can be increased without excessively increasing the direct heating output of the electric heating pad (100).

[0319] The integrated control unit (700) controls the opening / closing state or flow rate of the first auxiliary heat source path and the second auxiliary heat source path based on at least one of the solar heat storage temperature, the underground heat source temperature, the electric heating pad recovery heat temperature, the outdoor temperature, the air temperature at the inlet side of the outdoor unit (16), the evaporation pressure, the compressor suction superheat, and the heat medium temperature at the outlet side of the condenser. This control is a key function that supports the inventive step of the seventh invention. For example, when the solar heat storage temperature is high and the heat medium temperature at the outlet side of the condenser is low, the first auxiliary heat source path can be opened first to perform auxiliary heating of the water circulation cycle (50). Conversely, when the outdoor temperature is low and the evaporation pressure is reduced or the compressor suction superheat is unstable, the second auxiliary heat source path can be opened first to supply auxiliary heat to the heat source side of the outdoor unit (16). When the temperature of the recovered heat from the electric heating pad is above the reference temperature, the recovered heat opening / closing damper (497) of the electric heating pad recovered heat supply unit (495) is opened, and the recovered residual heat can be supplied to the heat source side of the heating unit (52) or the outdoor unit (16) through the recovered heat intake duct (496). In this way, the integrated control unit (700) does not simply handle the presence or absence of the auxiliary heat source as an on / off switch, but selects the path by considering the temperature of the auxiliary heat source, the heat pump cycle state, and the bed heating demand together.

[0320] The seventh invention of the present invention is technically significant in that it recovers residual heat from the electric heating pad section (100) or heat stored in the heat storage layer (150). In conventional electric heating pads, residual heat remaining after heating is generally released naturally into the bedding or indoors and is not utilized as a heat source. However, the seventh invention of the present invention resupplies heat recovered from the lower area of ​​the electric heating pad section (100), the heat storage layer (150), the air passage under the bed (910), or the air inside the bed to the heat source side of the heating section (52) or the outdoor unit (16) through the electric heating pad heat recovery supply section (495). With this configuration, the heat generated by the direct heating of the electric heating pad section (100) is not consumed as a one-time event but can be recirculated as an auxiliary heat source for the heat pump device (400). Therefore, the seventh invention of the present invention connects contact heating, bed air conditioning, and the supply of an auxiliary heat source for the heat pump into a single heat circulation structure.

[0321] Referring to FIG. 11, the composite heat source supply unit (800) of the seventh invention of the present invention is linked to the overheating prevention control, condensation prevention control, and deep sleep thermal pattern control of the integrated control unit (700). When there is sufficient auxiliary heat source, the integrated control unit (700) can suppress redundant overheating by lowering the power supply duty ratio or target temperature of the electric heating pad unit (100), and when the humidity inside the bed is high and the risk of condensation increases, the temperature conditions of the air inside the bed or the surface of the heating pad can be gently corrected using the auxiliary heat source. In addition, in a deep sleep state, while reducing direct heat generation of the electric heating pad unit (100), the efficiency of the heat pump device (400) is maintained through the first auxiliary heat source path or the second auxiliary heat source path, thereby preventing a cold sensation throughout the bed. Therefore, the seventh invention of the present invention is not merely a means of energy saving, but a heat source control means that enhances the stability of thermal control linked to the sleep state.

[0322] The inventive step of the seventh invention of the present invention lies not in using solar heat, geothermal heat, and waste heat as known auxiliary heat sources, but in selectively supplying these multiple heat sources to the heating section (52) of the bed heat pump device (400) or to the heat source side of the outdoor unit (16), and in the fact that the integrated control unit (700) determines the opening / closing state of the flow path or the flow rate based on the heat source temperature, outdoor temperature, evaporation pressure, compressor suction superheat, and the heat medium temperature at the condenser outlet side. Conventional heat pump auxiliary heat source systems often focus on increasing the overall cooling and heating efficiency of a building, and conventional electric heating pads rely on electric resistance heating to directly heat the center of the bed. The seventh invention of the present invention thermally closes the electric heating pad section (100), the bed auxiliary air conditioning section, and the heat pump device (400) by recovering residual heat from the electric heating pad section (100) generated in a limited microspace of the bed, heat storage from the heat storage layer (150), and waste heat within the bed as auxiliary heat sources for the heat pump device (400).

[0323] Consequently, the seventh invention of the present invention comprises a solar heat supply unit, a geothermal heat supply unit, and an electric heating pad recovery heat supply unit (495) through the composite heat source supply unit (800) of FIG. 9, and selectively performs direct auxiliary heating of the heating unit (52) and an increase in the evaporation temperature and evaporation pressure of the outdoor unit (16) through the first auxiliary heat source flow path and the second auxiliary heat source flow path. Accordingly, the heat dissipation performance of the water circulation cycle (50) is assisted, the compression ratio burden of the compressor (13) of the heat pump device (400) is reduced, and the direct heat output of the electric heating pad unit (100) can also be lowered.

[0324] Accordingly, the seventh invention of the present invention is an invention that simultaneously achieves improved energy efficiency, prevention of redundant overheating, uniformity of bed heat, heating stability under low ambient conditions, and reliability of sleep state interlocking control, and has sufficient technical significance and inventive step in terms of the organic combination relationship of its components, operating mechanism, and effects.

[0327] The eighth invention of the present invention is described below.

[0328] The eighth invention of the present invention relates to a control structure in which, in a grounded type sleep-inducing thermal-based temperature control system according to the seventh invention of the present invention, the heat pump device (400) is switched to cooling or dehumidifying operation, and at this time, while cooling and dehumidifying the air inside the bed or the air inside the bedding, the heating part (130) of the electric heating part (100) is finely energized so that condensation does not occur on the surface of the electric heating part (100), the inner insulation layer, or the outer surface of the outer covering tube (77). The eighth invention of the present invention is closely related to the cooling and dehumidifying refrigerant flow path of FIG. 8, the bed underside air passage (910) and outer discharge part (920) of FIG. 6, the refrigerant circuit configuration of the heat pump device (400) of FIG. 10, and the condensation prevention, electromagnetic wave attenuation, and safety cutoff cooperative control flow of FIG. 11.

[0329] The eighth invention of the present invention is characterized in that, when a heat pump device (400) is in cooling or dehumidifying operation, it forms a cooling / dehumidifying refrigerant flow path that sequentially includes a compressor (13), an outdoor unit (16), a high-pressure path (20a) of an internal heat exchanger (20), a cooling expansion valve (18), an evaporator (15), an accumulator (19), a low-pressure path (20b) of an internal heat exchanger (20), and a compressor (13), and an integrated control unit (700) conducts a fine current to a heating unit (130) without completely blocking it based on at least one of humidity inside the bed, floor surface temperature, indoor temperature and humidity, and dew point inside the bed.

[0331] Referring to FIGS. 8 and FIGS. 10, in the cooling and dehumidification operation of the eighth invention of the present invention, the compressor (13) compresses the low-temperature, low-pressure refrigerant and discharges it as a high-temperature, high-pressure refrigerant, and the discharged refrigerant is supplied to an outdoor unit (16) that functions as a condenser during cooling or dehumidification operation. In the outdoor unit (16), the refrigerant condenses while exchanging heat with the outside air and then passes through the high-pressure path (20a) of the internal heat exchanger (20). The high-pressure refrigerant is depressurized as it passes through the cooling expansion valve (18) to become a low-temperature, low-pressure state, and evaporates in the evaporator (15) while absorbing heat from the air inside the bed or the air inside the bedding. After passing through the evaporator (15), the refrigerant returns to the compressor (13) via the low-pressure path (20b) of the internal heat exchanger (20) after the liquid refrigerant is separated in the accumulator (19). This cooling and dehumidifying refrigerant flow path allows the air inside the bed or the air inside the bedding to be cooled or dehumidified through the evaporator (15), and the condensate generated in the evaporator (15) can be discharged to the outside through the dehumidifying water discharge part.

[0332] In the eighth invention of the present invention, the evaporator (15) is positioned in an air passage that sucks in air inside the bed or bedroom air, and the bed auxiliary air conditioning unit includes a cold air supply fan that supplies cooling or dehumidifying air that has passed through the evaporator (15) to the bed lower air passage (910) and the outer discharge unit (920). Referring to FIG. 6, the bed lower air passage (910) guides the cooling or dehumidifying air formed through the evaporator (15) to the bottom of the bed (B), and the outer discharge unit (920) discharges air from the outer area of ​​the electric heating pad (100) toward the upper surface of the bed or toward the inside of the bedding. The outer air volume control damper controls the air volume or discharge direction of the outer discharge unit (920) to prevent the cold or dehumidifying air from being excessively sprayed directly onto the center of the user's body and to distribute it to the inside of the bedding or the outer area of ​​the bed. Accordingly, the eighth invention of the present invention can stably control the temperature and humidity of the entire bed by dividing the central contact heating area of ​​the electric heating pad part (100) and the cooling / dehumidifying air control area of ​​the outer discharge part (920).

[0333] The most important technical feature of the eighth invention of the present invention is that the heating element (130) of the electric heating element (100) is not completely cut off but is subjected to a fine current during cooling or dehumidification operation. Generally, when cooling or dehumidification operation is performed, stopping the heating element may be an intuitive choice. However, in a bed environment, a simple stop may actually increase the risk of condensation. During the process in which the air inside the bed or the air inside the bedding is cooled and dehumidified by the evaporator (15), if the surface temperature of the electric heating element (100) or the outer surface temperature of the outer covering tube (77) approaches the dew point inside the bed, moisture may condense and condensation may occur. Condensation not only causes discomfort to the user but can also reduce the electrical stability of the internal insulation layer, heating element (130), grounded shielding element (120), and outer covering tube (77) of the electric heating element (100).

[0334] In order to solve the problem unique to such beds, the present invention 8 controls the heating element (130) to be finely heated without completely blocking it during cooling and dehumidification operation so that the difference between the surface temperature of the floor mat and the dew point inside the bed is greater than a safe temperature difference of 1°C to 5°C.

[0335] The above safe temperature difference of 1°C to 5°C is a technical range for balancing condensation suppression and cooling / dehumidification comfort. If the safe temperature difference is less than 1°C, the surface temperature of the floor mat or the outer surface temperature of the outer covering tube (77) is too close to the dew point, increasing the likelihood that condensation will occur due to local cooling caused by changes in humidity inside the bed or the user's body movement. Conversely, if the safe temperature difference is excessively secured to exceed 5°C, the microcurrent of the heating element (130) increases excessively, reducing the perceived effect of cooling or dehumidification operation, and the user may feel unnecessary heat or stuffiness even during cooling or dehumidification. Therefore, the range of 1°C to 5°C has critical significance as a practical control range to suppress condensation without compromising the purpose of cooling and dehumidification operation.

[0336] The integrated control unit (700) not only controls the fine power duty ratio of the heating unit (130) based on at least one of the humidity inside the bed, the surface temperature of the floor mat, the indoor temperature and humidity, and the dew point inside the bed, but also corrects at least one of the rotational speed of the compressor (13), the opening degree of the cooling expansion valve (18), the opening degree of the flow rate adjustment unit (24), and the airflow rate of the cold air supply fan. In this respect, the eighth invention of the present invention is not a structure that simply keeps the heating unit on weakly during dehumidification. If the rotational speed of the compressor (13) increases, the cooling capacity of the evaporator (15) increases, and the dehumidification effect increases, but the surface temperature of the floor mat may approach the dew point. The opening degree of the cooling expansion valve (18) and the opening degree of the flow rate adjustment unit (24) affect the evaporation temperature of the evaporator (15) and the refrigerant flow rate, and the airflow rate of the cold air supply fan affects the cooling and dehumidification speed of the air inside the bed and the heat and moisture exchange conditions around the surface of the floor mat. Accordingly, the integrated control unit (700) simultaneously corrects the refrigerant cycle variable, the air supply variable, and the fine current flow variable of the heating unit (130) to perform cooperative control that suppresses condensation while performing dehumidification within the bed.

[0337] Referring to FIG. 11, the eighth invention of the present invention can determine the control priority so that the condensation prevention control does not conflict with the overheating prevention control, electromagnetic wave attenuation control, and grounding condition / leakage current safety control. For example, if the humidity inside the bed is high and the surface temperature of the floor mat approaches the dew point, the integrated control unit (700) can increase the priority of the condensation prevention control to increase the duty cycle of the fine current flow of the heating unit (130) or adjust the airflow of the cold air supply fan. However, if the surface temperature of the floor mat is already high and the sleep state detection unit (300) determines an increased tossing and turning state, the fine current flow of the heating unit (130) can be limited by considering the overheating prevention control together, and the suppression of condensation and the prevention of overheating can be harmonized through the opening of the cooling expansion valve (18) or the adjustment of the airflow of the cold air supply fan. In addition, if a grounding abnormality, a leakage current abnormality, or a decrease in insulation resistance is detected, the safety cutoff condition may take precedence over the fine current flow of the heating unit (130).

[0338] As such, the eighth invention of the present invention is a composite control structure that considers sleep comfort and electrical safety together, rather than pursuing only the single goal of suppressing condensation during cooling and dehumidification operation.

[0339] The inventive step of the eighth invention of the present invention lies in the fact that the cooling and dehumidification operation of the heat pump device (400) and the fine heating control of the electric heating pad unit (100) are not viewed as contradictory operations, but are controlled in an integrated manner based on a physical quantity called the dew point within the bed. Conventional electric heating pads are primarily intended for heating or providing heat, while conventional cooling and dehumidification devices are intended for air cooling or humidity reduction. If these two devices are simply placed in parallel, exclusive operation is common, such as the electric heating pad being turned off during cooling and dehumidification, and the cooling and dehumidification device being turned off during heating.

[0340] However, the eighth invention of the present invention recognizes the problem that condensation may occur on the surface or internal insulation structure of the electric heating pad (100) when cooling and dehumidification are performed inside the bed, and actively utilizes the micro-conduction of the heating element (130) as a control variable for suppressing condensation. Furthermore, instead of solving the problem solely with micro-conduction, the rotational speed of the compressor (13), the opening degree of the cooling expansion valve (18), the opening degree of the flow rate adjustment unit (24), and the airflow rate of the cold air supply fan are corrected together, so that the refrigerant circuit, the air circuit, and the electric heating pad heating circuit are combined into a single condensation prevention control logic.

[0341] Consequently, the eighth invention of the present invention is an invention that cools and dehumidifies the air inside the bed or the air inside the bedding through an evaporator (15) based on the cooling and dehumidifying refrigerant flow path of FIG. 8, supplies dehumidified air or cooling air to the bed through a cold air supply fan, an air passage under the bed (910), an outer discharge part (920), a dehumidifying water discharge part, and an outer air volume control damper, while the integrated control unit (700) finely conducts a heating part (130) to maintain a safe temperature difference between the surface temperature of the floor mat and the dew point inside the bed.

[0342] Accordingly, the eighth invention of the present invention performs dehumidification within the bed while suppressing the occurrence of condensation on the surface of the electric heating pad (100), the inner insulation layer, or the outer surface of the outer covering tube (77), and simultaneously improves cooling and dehumidification comfort, electrical safety, bedding hygiene, and long-term durability. This configuration is a bed-specific cooling, dehumidification, and condensation prevention cooperative control technology that is difficult to easily derive from a parallel combination of a simple cooling device, a simple dehumidification device, or a simple electric heating pad, and has sufficient technical significance and inventiveness in terms of the organic combination relationship, operating mechanism, and effect of the configuration.

[0345] The ninth invention of the present invention is described below.

[0346] The ninth invention of the present invention relates to a grounded type sleep-inducing thermal-based temperature control system according to the eighth invention of the present invention, wherein, during the heating operation of a heat pump device (400), the condensation heat generated in the condenser (14) is not simply released to the outside, but is selectively supplied to at least one of the liquid flow path (51), heating section (52), radiator (53), bed lower air passage (910), outer discharge section (920), heat storage layer heat exchange flow path, or bedding drying flow path of a water circulation cycle (50), thereby performing preheating, low-airflow warmth maintenance, and bedding drying according to the user's sleep stage.

[0347] The ninth invention of the present invention is organically related to the bed auxiliary air conditioning unit of FIG. 6, the heating operation refrigerant flow path of the heat pump device (400) of FIG. 7, the composite heat source supply unit (800) of FIG. 9, the detailed configuration of the heat pump device (400) of FIG. 10, and the condensation prevention, electromagnetic wave attenuation, and safety cutoff cooperative control flow of FIG. 11. The ninth invention of the present invention utilizes the condensation heat of the condenser (14) for bed auxiliary heating and bedding drying through a water circulation cycle (50), configures the heat storage layer heat exchange path as an indirect heat exchange path that circulates water, an auxiliary heat medium, or air rather than a direct refrigerant supply method, and the integrated control unit (700) lowers the power duty ratio or target temperature of the heating unit (130) of the electric heating pad unit (100) according to the user's sleep state and the amount of composite heat source supply.

[0349] Referring to FIGS. 7 and FIGS. 10, during heating operation, the heat pump device (400) compresses the refrigerant in the compressor (13) to a high temperature and high pressure state, and the compressed refrigerant releases heat as it condenses in the condenser (14). The ninth invention is configured to transfer this condensation heat to the liquid flow path (51) of the water circulation cycle (50), and to supply heat to at least one of the bed lower air passage (910), outer discharge section (920), heat storage layer heat exchange passage, or bedding drying passage while the water or heat medium passing through the liquid flow path (51) circulates through the heating section (52) and the radiator (53).

[0350] This configuration is highly safe in that it directly utilizes the condensation heat of the heat pump device (400) in the bed environment, while transferring heat via water, an auxiliary heat medium, or air without directly supplying refrigerant to the bed contact area. In particular, the heat exchange path of the heat storage layer is configured as an indirect heat exchange path that circulates water, an auxiliary heat medium, or air of the water circulation cycle (50), rather than directly supplying refrigerant to the heat storage layer (150) of the electric heating pad (100). With this configuration, the heat storage layer (150) can be preheated using the heat pump condensation heat or an auxiliary heat source without the risk of refrigerant leakage, and safer and more gradual heat transfer is achieved inside the electric heating pad (100) close to the user's body.

[0351] In the ninth invention of the present invention, when the user's sleep state is determined to be a state prior to entering sleep, the integrated control unit (700) preheats the electric heating pad unit (100), the heat storage layer (150), the air passage under the bed (910), or the outer discharge unit (920) using at least one of the condensation heat of the condenser (14), the heat storage of the solar heat supply unit, the underground heat of the geothermal heat supply unit, or the heat recovery of the electric heating pad recovery heat supply unit (495). Since the user may feel a strong initial cold sensation upon entering the bed in the state prior to entering sleep, the method of operating only the heating unit (130) of the electric heating pad unit (100) at high output may cause local overheating in the central part.

[0352] Accordingly, the ninth invention of the present invention reduces the initial temperature difference of the entire bed by using the condensation heat of the condenser (14) or the auxiliary heat of the composite heat source supply unit (800) to preheat not only the central contact heating area of ​​the electric heating pad unit (100) but also the air passage under the bed (910) and the outer discharge unit (920). As a result, the user can enter the bed in a state where the central contact heating and the outer heat supply are in harmony, rather than in an unbalanced state where only the central part is hot and the outer part is cold.

[0353] When the user's sleep state is determined to be deep sleep, the integrated control unit (700) reduces the resistance heating output of the heating unit (130) while maintaining a low-airflow warm air supply through the radiator (53). Since excessive contact heating in a deep sleep state can cause sweating, increased tossing and turning, or reduced sleep continuity, it is desirable to reduce the direct heating of the heating unit (130). However, if the output of the heating unit (130) is reduced too rapidly, the user may feel a cold sensation.

[0354] To solve these conflicting problems, the ninth invention of the present invention reduces direct heat generation of the electric heating pad (100) while maintaining low-airflow warmth supply of a radiator (53) using condensation heat of a heat pump device (400). Accordingly, excessive heat stimulation is suppressed in the lower central part of the user's body, and gentle warmth is maintained in the air layer inside the bedding, preventing a rapid drop in the perceived temperature. This is a control that is combined with the deep sleep maintenance section of FIG. 5 and the outer air control structure of FIG. 6 to simultaneously achieve suppression of overheating and prevention of cold sensation during deep sleep.

[0355] When the user's sleep state is determined to be the state after waking up, the integrated control unit (700) supplies air for drying bedding using the condensation heat of the condenser (14) while suppressing the high-temperature heating operation of the electric heating pad unit (100). After sleeping, the humidity inside the bedding may increase due to the user's body temperature, sweating, and moisture accumulation within the bedding, and if left unchecked, odor generation, bacterial growth, residual condensation, or deterioration of bedding hygiene may occur.

[0356] Considering that the user no longer requires high-temperature contact heat after waking up, the ninth invention suppresses high-temperature heat generation of the electric heating pad (100) and instead supplies dry air using heat pump condensation heat through the bedding drying path, the air passage under the bed (910), or the outer discharge part (920). Accordingly, the ninth invention provides post-sleep processing control that not only provides heat during sleep but also performs bedding drying and hygiene restoration after waking up.

[0357] In addition, the integrated control unit (700) controls the heat pump condensation heat and electric heating pad heating so that overheating does not occur by lowering the duty cycle or target temperature of the heating unit (130) when the heat recovered by the condenser (14) or the heat supplied by the composite heat source supply unit (800) is greater than or equal to the reference heat. This configuration is the core supporting the inventive step of the ninth invention of the present invention. When the heat of the heating unit (130) is continuously energized according to the existing set value while the heat of the heat pump device (400), the heat stored by the solar heat supply unit, the underground heat of the geothermal heat supply unit, and the heat recovered by the electric heating pad heat supply unit (495) are sufficient, the central part and the outer part of the bed may overheat simultaneously.

[0358] The ninth invention of the present invention reduces the direct heat generation of the electric heating pad (100) when there is sufficient auxiliary heat or recovered heat to prevent such overheating. This reduces energy waste, suppresses increased sweating or tossing and turning by the user, and also alleviates the risk of overheating and condensation within the bed.

[0359] The inventive step of the ninth invention of the present invention lies not in the simple concept of utilizing condensation heat, but in classifying the purpose of using condensation heat according to sleep conditions, and in the fact that the integrated control unit (700) mutually corrects the direct heating of the electric heating pad unit (100), the heat pump condensation heat, and the composite heat source. Conventional electric heating pads rely on electric resistance heating to directly heat the lower part of the user's body, and conventional heat pump heating devices generally utilize condensation heat for the purpose of heating the entire room.

[0360] The ninth invention of the present invention sets different operating objectives in a limited microspace of a bed—preheating before entering the bed, maintaining low-airflow warmth during deep sleep, and drying the bedding after waking up—and adjusts the condensation heat of the condenser (14), the supply heat of the composite heat source supply unit (800), and the direct heat output of the heating unit (130) according to each objective. In addition, by configuring the heat storage layer heat exchange path in an indirect heat exchange manner, it also takes into account the refrigerant safety issue in the bed contact area.

[0361] Consequently, the ninth invention of the present invention selectively transfers the condensation heat generated in the heat pump device (400) of FIGS. 7 and FIGS. 10 to the bed under air passage (910), outer discharge section (920), heat storage layer heat exchange passage and bedding drying passage of FIGS. 6, and performs preheating, low-airflow warmth maintenance, and bedding drying according to the sleep stage in conjunction with the composite heat source supply section (800) of FIGS. 9.

[0362] The ninth invention of the present invention prevents redundant overheating and increases energy efficiency by adjusting the direct heat of the electric heating pad (100) in a mutually complementary manner by the integrated control unit (700), rather than using it competitively with the heat pump condensation heat and composite heat source. Accordingly, the ninth invention of the present invention is a bed-specific condensation heat utilization control technology that simultaneously improves comfort during sleep, hygiene of bedding after waking up, electrical and refrigerant safety, energy saving, and bed thermal uniformity, and possesses sufficient technical significance and inventiveness in terms of the organic combination relationship of its composition, operating mechanism, and effects.

[0364] Meanwhile, FIG. 12 discloses an electric heating wire comprising: a twisted wire (YL) positioned at the center; a winding conductor wire (SL) wound spirally around the outer circumference of the twisted wire (YL); and an insulating outer sheath layer (OP) formed to surround the outer circumference of the winding conductor wire (SL). Explanation of the symbols

[0366] 100 : Electric heating pad section 120 : Grounded shielding part 121 : First shielding electrode 122 : Second shielding electrode 130 : Heating element 140: Temperature distribution control layer 150 : Thermal storage layer 160 : Condensation-blocking insulation layer 200 : Environmental sensor unit 300 : Sleep state detection unit 360: Portable Controller 400 : Heat pump unit 700 : Integrated Control Unit 800 : Combined heat source supply unit 920 : Outer discharge section

Claims

Claim 1 An electric heating pad unit (100) placed on the user's bed; a grounding shielding unit (120) provided on the electric heating pad unit (100) to shield electromagnetic waves or induce leakage current to the ground side; a portable controller (360) for setting the heating temperature and operating time of the electric heating pad unit (100); an environment sensor unit (200) for detecting at least one of the temperature inside the bed, humidity inside the bed, surface temperature of the electric heating pad unit, and indoor temperature and humidity; and a sleep state detection unit (300) for determining the user's sleep state based on at least one of the user's body movement, pressure distribution, heart rate, and respiration. The system includes an integrated control unit (700) that controls the heating operation of the electric heating pad unit (100) based on the setting value of the portable controller (360), the detection value of the environment sensor unit (200), and the determination value of the sleep state detection unit (300). The bed includes a bed (B), and the electric heating pad unit (100) is positioned in the center of the bed corresponding to the lower central part of the user's body on the upper surface of the bed (B). The integrated control unit (700) is configured to perform contact heating operation, grounding safety operation, and sleep state-linked heating operation of the electric heating pad unit (100) independently or in conjunction with each other. Depending on whether the user's sleep state is determined to be one of the pre-sleep state, sleep state, deep sleep state, light sleep state, increased tossing and turning state, pre-awakening state, and post-waking state, the integrated control unit (700) controls at least one of the target temperature, heating output, current duty ratio, remaining operating time, and safety cutoff condition of the electric heating pad unit (100). Automatic correction is performed, and the grounding state or electromagnetic wave attenuation state of the grounding type shielding part (120) is controlled in conjunction with the operation state of the portable controller (360), and the integrated control unit (700) calculates the dew point or condensation risk level within the bed from the detection value of the environment sensor unit (200), and calculates the estimated time of the user's descent, the time of increased tossing and turning, or the time before waking up from the judgment value of the sleep state detection unit (300), thereby providing overheating prevention control, condensation prevention control, and electromagnetic wave attenuation control.Determining whether to execute or prioritize the control of at least one of a plurality of electric heating pad control modes, including grounding status, leakage current safety control, and deep sleep thermal pattern control, and the electric heating pad unit (100) comprises an upper cover layer (111) in contact with the user's body, a temperature distribution control layer (140) disposed below the upper cover layer (111) and diffusing heat generated from a heating element (130) provided in the electric heating pad unit (100) in a planar direction including the length direction and width direction of the electric heating pad unit (100) to alleviate local overheating, a first shielding electrode (121) of a grounding type shielding unit (120) disposed below the temperature distribution control layer (140), a heating element (130) disposed below the first shielding electrode (121), a condensation blocking insulation layer (160) disposed below the heating element (130), and a condensation blocking insulation layer (160) disposed below the condensation blocking insulation layer (160). The device comprises a heat storage layer (150) that temporarily stores or gradually releases heat from a heating element (130), a second shielding electrode (122) of a grounding type shielding element (120) disposed below the heat storage layer (150), a lower insulation layer (112) disposed below the second shielding electrode (122) to reduce downward heat loss, and a grounding wire that electrically connects at least one of the first shielding electrode (121) and the second shielding electrode (122) to a grounding terminal, wherein the upper cover layer (111) is formed as a skin contact fiber layer that comes into direct contact with the user's body or bedding, and the skin contact fiber layer comprises, based on 100% by weight of the total fiber layer, 40 to 44% by weight of a first component lyocell fiber, 26 to 30% by weight of a second component recycled polyester fiber, 12 to 15% by weight of a third component nylon-based abrasion-resistant fiber, and a fourth component polyurethane-based It comprises 5 to 7 weight% of elastic fibers, 3 to 5 weight% of ceramic-based far-infrared radiation particles as the fifth component, 1 to 2 weight% of silver-zinc-based antibacterial particles as the sixth component, and 3 to 5 weight% of silica-based moisture-absorbing particles as the seventh component, whereinThe upper cover layer composition is formed such that the sum of the first to seventh components is 100% by weight; the temperature distribution control layer (140) is formed as a triple functional layer in which a planar heat diffusion layer comprising a graphite sheet or carbon fiber nonwoven fabric to diffuse heat generated from the heating member (130) in a planar direction, an insulating heat conductive layer comprising at least one electrical insulating ceramic filler among boron nitride, alumina, and magnesium oxide to provide thermal conductivity and electrical insulation, and a heat storage / cooling heat dissipation layer comprising a microencapsulated phase change material to mitigate a rapid rise or fall in surface temperature are sequentially stacked; the grounding shielding member (120) includes a first shielding electrode (121) disposed between the temperature distribution control layer (140) and the heating member (130), and the first shielding electrode (121) comprises 30 to 100% by weight of the first component, copper powder or copper flakes. A conductive shielding composition is formed by comprising 40% by weight of a second component, 5 to 10% by weight of silver-coated copper powder, 5 to 12% by weight of nickel powder or nickel-coated carbon fiber as a third component, 4 to 10% by weight of graphite powder or graphene nanoplatelets as a fourth component, 1 to 5% by weight of conductive carbon black or carbon nanotubes as a fifth component, 25 to 38% by weight of a polyurethane-based or silicone-based elastic binder as a sixth component, and 3 to 8% by weight of a halogen-free phosphorus-based flame retardant or nitrogen-based flame retardant as a seventh component, wherein the total of the first to seventh components is 100% by weight; wherein the first shielding electrode (121) is electrically connected to a grounding terminal via a grounding wire while being electrically insulated from the heating element (130), thereby shielding electromagnetic waves generated from the heating element (130) and inducing leakage current to the ground side; and the condensation blocking The insulating layer (160) comprises, based on 100% by weight of the total composition, 45 to 60% by weight of a first component, a silicone-based or polyurethane-based insulating elastic resin, and 10 to 20% by weight of a second component, an insulating thermal conductive filler selected from alumina, boron nitride, or magnesium oxide.A grounded sleep-inducing thermal-based temperature control system characterized by being formed of a moisture-proof and insulating composition comprising 5 to 12 weight% of a silica or zeolite-based moisture-absorbing filler as a third component, 3 to 8 weight% of a fluorine-based or silane-based water-repellent additive as a fourth component, 8 to 15 weight% of a halogen-free flame retardant as a fifth component, and 1 to 5 weight% of a dispersant or coupling agent as a sixth component, wherein the total of the first to sixth components is 100 weight%. Claim 2 delete Claim 3 In claim 1, the heat storage layer (150) is formed of a heat storage composition comprising, based on 100 weight% of the total composition, 35 to 50 weight% of a first component, a silicone-based or polyurethane-based elastic resin; 15 to 30 weight% of a second component, a microencapsulated phase change material; 10 to 20 weight% of a third component, a ceramic heat storage particle selected from at least one of alumina, magnesium oxide, or boron nitride; 3 to 8 weight% of a fourth component, a graphite powder or carbon-based thermal conductive filler; 5 to 10 weight% of a fifth component, a halogen-free flame retardant; and 1 to 4 weight% of a sixth component, a dispersant or silane-based coupling agent; the heating member (130) comprises a heating means (70), wherein the heating means (70) comprises: a heating core (71) made of a plurality of carbon fiber strands; and insulating the outer circumference of the heating core (71). A fluoropolymer-based core tube (72), a carbon fiber reinforcing yarn (73) wound around the outer circumference of the core tube (72) to increase the durability of the core tube; an inner covering tube (74) made of PVC material that accommodates the carbon fiber reinforcing yarn (73) inside; a copper outer covering tube (75) that accommodates the inner covering tube (74) inside; an aluminum foil (76) wound around the outer circumference of the copper outer covering tube (75); the copper outer covering tube (75) and the aluminum foil (76) are electrically insulated from the heating core (71) and are selectively electrically connected to at least one of the grounding wire, the first shielding electrode (121), or the second shielding electrode (122) of the grounding type shielding part (120) to function as an auxiliary shielding layer; and an outer covering tube (77) formed of an antibacterial and eco-friendly durable covering composition that accommodates the aluminum foil (76) inside.The outer covering tube (77) serves as the outermost covering layer of the heating means (70) and suppresses wear caused by repeated loading by a user, folding, moisture penetration, and degradation of insulation performance. The outer covering tube (77) is formed from an antibacterial and eco-friendly durable covering composition having antibacterial properties, eco-friendliness, durability, flexibility, low odor, skin contact safety, and flame retardancy. Based on 100% by weight of the total composition, the covering composition comprises, in the order of: 33 to 36% by weight of a bio-based thermoplastic polyurethane elastomer as a first component; 15 to 18% by weight of a low-volatility silicone elastomer as a second component; 7 to 10% by weight of a halogen-free phosphorus-based flame retardant as a third component; 5 to 8% by weight of a halogen-free nitrogen-based flame retardant as a fourth component; 5 to 8% by weight of magnesium hydroxide as a fifth component; 4 to 7% by weight of aluminum hydroxide as a sixth component; and a seventh component A grounded sleep-inducing thermal-based temperature control system characterized by comprising 4 to 7 weight% of an epoxidized vegetable oil or bio-based polyester plasticizer, 2 to 4 weight% of an 8th component silver-zinc antimicrobial glass powder or zinc-based antimicrobial ceramic powder, and 2 to 5 weight% of an abrasion-resistant and reinforcing filler comprising at least one of silica, kaolin, montmorillonite, and cellulose nanofibers as a 9th component.; Claim 4 In claim 3, the portable controller (360) comprises: a temperature display window (361) positioned on the upper front side to display a set temperature or current control temperature as a number; a time display window (362) positioned spaced apart from the temperature display window (361) to display a set operating time or remaining operating time as a number; a deep sleep mode button (363) positioned below the temperature display window (361) or the time display window (362); an electromagnetic wave attenuation button (364) positioned spaced apart from the deep sleep mode button (363); a temperature increase button (365) to increase the set temperature displayed on the temperature display window (361); a temperature decrease button (366) to decrease the set temperature; a time increase button (367) to increase the set operating time displayed on the time display window (362); a time decrease button (368) to decrease the set operating time; a deep sleep mode indicator lamp (369) to indicate whether the deep sleep mode button (363) is input or whether the deep sleep mode is executed; and an electromagnetic wave attenuation It includes an electromagnetic wave attenuation indicator lamp (370) that indicates whether the button (364) is input or whether the grounding shielding part (120) is activated, and the integrated control unit (700) keeps the sleep mode indicator lamp (369) in an off state before the sleep mode button (363) is input, and when the sleep mode button (363) is input, it turns on or flashes the sleep mode indicator lamp (369) while converting the set temperature of the temperature display window (361) and the set operating time of the time display window (362) into a sleep mode temperature and time profile, and the sleep mode temperature and time profile is composed of a multi-stage thermal control profile including at least one of a preheating section before entering sleep, a cooling section after estimating entry into sleep, a deep sleep maintenance section, a section corresponding to increased tossing and turning, and a gradual heating section before waking up, and the integrated control unit (700) in each section of the multi-stage thermal control profile of the electric heating pad part (100) By correcting at least one of the central heat generation amount, current duty cycle, target surface temperature, and remaining operating time,A grounded sleep-inducing heat-based temperature control system characterized by controlling the contact heat of the electric heating pad (100) to correspond to the user's sleep stage, and when the electromagnetic wave attenuation button (364) is input, connecting the shielding electrode of the grounded shielding part (120) to a grounding terminal or switching at least one of the current waveform, current phase, current duty ratio, or zero-crossing switching timing of the heating part (130) to an electromagnetic wave reduction condition, and when a grounding abnormality, leakage current abnormality, or insulation resistance decrease of the grounded shielding part (120) is detected, displaying the electromagnetic wave attenuation indicator lamp (370) in a warning flashing state distinct from the normal lighting state and limiting the output of the heating part (130). Claim 5 In claim 4, the system further comprises a bed auxiliary air conditioning unit disposed at the bottom or side of the bed and supplying warm or cold air to the interior space of the bed, the lower space, or the interior space of the bedding, wherein the bed auxiliary air conditioning unit comprises an air conditioning heat source unit disposed at any one of the bottom of the bed (B), the side of the bed, the headboard, the bedroom floor, or a movable case; a bed bottom air passage (910) that guides warm or cold air generated or recovered from the air conditioning heat source unit to the bottom of the bed (B); an outer discharge unit (920) disposed in the outer area of ​​the electric heating pad unit (100) and discharges warm or cold air delivered through the bed bottom air passage (910) toward the upper surface of the bed or toward the interior of the bedding; an outer distribution duct connecting the bed bottom air passage (910) and the outer discharge unit (920); and an outer airflow control damper that controls the airflow or discharge direction of the air supplied to the outer discharge unit (920). The electric heating pad (100) is positioned in the center of the upper surface of the bed (B), and the outer discharge unit (920) is positioned on at least one of the left outer, right outer, upper outer, or lower outer of the electric heating pad (100), so that the central contact heating area of ​​the electric heating pad (100) and the air control area of ​​the outer discharge unit (920) are separated from each other. The integrated control unit (700) controls the heating operation of the electric heating pad (100) in conjunction with at least one of the warm air supply, cold air supply, dehumidification supply, or bedding drying operation of the bed auxiliary air conditioning unit, and controls the central contact heating of the electric heating pad (100) and the air control of the outer discharge unit (920) so that they do not cause overlapping overheating or condensation based on the temperature inside the bed, humidity inside the bed, surface temperature of the heating pad, the user's sleep state, and whether the deep sleep mode is input of the portable controller (360). System. Claim 6 delete

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