WO2019139331A1

WO2019139331A1 - Portable heated seat cushion

Info

Publication number: WO2019139331A1
Application number: PCT/KR2019/000269
Authority: WO
Inventors: 오영택; 최애희
Original assignee: 주식회사 어썸리드; 한국기술교육대학교 산학협력단
Priority date: 2018-01-10
Filing date: 2019-01-08
Publication date: 2019-07-18
Also published as: KR20190085428A

Abstract

The present invention relates to a heated seat cushion and, more specifically, to a portable heated seat cushion of which power usage is saved through a current supply control according to the temperature. The portable heated seat cushion of the present invention: compares the temperature measured by means of a temperature detecting sensor and the temperature set by a user; stops current supply when the set temperature is higher than the measured temperature so as to save the power usage; and can be used for a long time as the power usage is reduced. Also, a highly portable heated seat cushion can be provided as current is supplied through a USB.

Description

Portable thermal cushion

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a warm cushion, and more particularly, to a portable warm cushion in which power consumption is reduced through current supply control according to temperature.

In winter, electric mats and electric cushions are used for easy and fast heating. 2. Description of the Related Art Generally, a conventional mat or cushion using electricity generally has a resistance element such as a copper wire or a nichrome wire arranged in a zigzag shape as a heat generating element.

However, the conventional electric mat or cushion tends to be short-circuited to the copper wire or the nichrome wire when used for a long period of time, and there is a risk of burning or fire due to overheating. In addition, since electromagnetic waves are generated, it may have a bad influence on the user.

In addition, since 220V or 110V is used, current can not be supplied in a place where no outlet is provided, which is not suitable for carrying.

In order to solve the above problems, a mat or a cushion using carbon fiber as a heating element is used. The heating element using carbon fiber is advantageous in that the heating capacity is small, the rising and falling temperature characteristics are excellent, and the electromagnetic wave is not emitted, as compared with the heating element using copper wire or nichrome wire.

The carbon constituting the carbon fiber is mainly composed of an inorganic or organic graphite structure. The carbon fiber is composed of a carbon fiber made of yarn, a powder made of powder, a carbon felt made like a cotton, and a solidified carbon rod. Which is disclosed in Korean Utility Model Registration No. 20-0425335 (Portable thermal insulation cushion using carbon fiber, Aug. 28, 2006).

However, the prior art thermal cushion has a problem in that power consumption is large because the current is continuously supplied to the heating element during use, and the use time is not long because of high power consumption.

[Prior Art Literature]

1. Korean Utility Model Registration No. 20-0425335 (Portable thermal cushion using carbon fiber, Aug. 28, 2006)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a portable heating cushion in which electric power used for heat generation of a cushion is reduced by controlling a current supply according to a temperature using a temperature sensing sensor have. It also provides a portable thermal cushion that can be used wherever power can be supplied from the USB terminal.

In addition, by providing the cushion pouch and the auxiliary battery pouch together, it is possible to provide a portable thermal cushion that is easy to store and carry.

A portable heating cushion according to an embodiment of the present invention includes a cushion 100 having a heating element 120 built therein; A temperature sensor 122 attached to the heating element 120; And a control unit for automatically controlling the supply of current to the heating element 120 based on the temperature measured by the temperature sensor 122. The heating element 120 is an elastic body mixed with a conductive material, Change Materials).

When the temperature of the heating body 120 measured by the temperature sensing sensor 122 is lower than a predetermined temperature, the controller continuously supplies current to the heating body 120. When the temperature sensing sensor 122 measures The current is not supplied to the heating element 120 when the temperature of the heating element 120 is equal to or higher than a predetermined temperature.

In addition, the heating element 120 is characterized in that when the current is not supplied by the controller, the temperature set by the user is maintained by using heat generated from the latent heat material built in the heating element 120 .

The conductive material of the heating element 120 may be selected from at least one of carbon fiber, carbon black, carbon felt, carbon fiber, carbon nanotube, and carbon heating material including graphene, and is added to the elastic material.

Also, the resistance of the heating element 120 is between 1 and 10.

The portable heating cushion of the present invention constructed as described above compares the temperature measured by the temperature sensor with the temperature set by the user and when the temperature set by the user is higher than or equal to the measured temperature, Therefore, power consumption can be reduced.

Since the power consumption is reduced, the portable thermal cushion of the present invention can be used for a longer time than the conventional thermal cushion.

In addition, since it can be used anywhere if current can be supplied through USB, it is easy to carry.

1 is a perspective view of a portable warm cushion according to an embodiment of the present invention;

2 is an exploded perspective view of a portable heating cushion according to an embodiment of the present invention.

3 is a perspective view of a power supply unit of a portable thermal cushion according to an embodiment of the present invention.

4 is a view illustrating a method of storing a portable thermal cushion according to an embodiment of the present invention

FIG. 5 is a view illustrating a method of storing a portable thermal cushion according to an embodiment of the present invention

6 is a flowchart of a method of using a portable thermal cushion according to an embodiment of the present invention

FIG. 7 is a table showing the temperature, power, and operating time of a conventional thermal cushion and a portable thermal cushion according to an embodiment of the present invention

FIG. 8 is a graph showing a comparison of the use time of a conventional warming cushion and a portable warming cushion according to an embodiment of the present invention

9 is a plan view of a portable heating cushion according to another embodiment of the present invention

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

1 is a perspective view of a portable heating cushion according to an embodiment of the present invention. As shown in FIG. 1, a power unit 200 is attached to the upper surface of the cushion 100 and the cushion 100. 3 and 230 for receiving a current are provided in the power supply unit 200. The power supply unit 200 receives current from the USB cable to receive the current from the USB cable, It has an advantage that it can be carried easily because it can generate heat at a temperature.

In recent years, as the use of a single-type battery or a tablet PC increases, many people carry a secondary battery. The secondary battery also charges the battery of the terminal or the tablet PC by supplying current to the terminal or the tablet PC using a USB cable. .

Therefore, the auxiliary battery means that it can be used as a current supplying body for the heat generation of the cushion 100. Therefore, a hook may be formed at the corner of the cushion 100, and may be used in combination with the auxiliary battery pouch 300 capable of storing the auxiliary battery in the loop.

At this time, the loop may be formed at any position desired by the user of the cushion 100. However, when the loop is formed on the upper surface of the cushion 100, it is hard to feel comfort when the user seated. It is preferable that the auxiliary battery is formed at the edge of the cushion 100 because the auxiliary battery may be broken when the loop is formed and it is preferable that the loop is formed in the vicinity of the power source unit 200 so that the length of the USB cable is not affected .

2 is an exploded perspective view of a portable heating cushion according to an embodiment of the present invention. 2, the cushion 100 is divided into a cushion upper portion 110 and a cushion lower portion 130. A heating body 120 is formed between the upper cushion portion 110 and the lower cushion portion 130 have.

The heating element 120 is formed by adding at least one of carbon heating elements 121 including carbon fibers, carbon black, carbon felt, carbon rods, carbon nanotubes and graphene to a rubber base material such as urethane or silicone, .

The heating element 120 further includes a temperature sensor 122 for measuring the temperature of the heating element 120.

When the current is supplied from the power supply unit 200, the heating element 120 generates heat and provides a heating cushion. When the temperature of the heating element 120 is higher than or equal to a predetermined temperature from the power source 200, the controller 122 (not shown) controls the temperature of the heating element 120, Thereby stopping the supply.

A phase change material (not shown) is embedded in the heating element 120 to maintain the temperature of the heating cushion when the current supply is stopped by the controller.

Latent heat is the heat absorbed or released when the state of a substance changes between a gas and a liquid or between a liquid and a solid. Therefore, since the latent heat material is embedded in the heat emitting body 120, the temperature of the heat emitting body 120 can be maintained without the current being supplied to the heat emitting body 120.

Therefore, since the power consumption for maintaining the temperature of the heating element 120 is reduced, the battery can be used for a longer time than a conventional thermal cushion even if a battery of the same capacity is used. This will be described later in more detail with reference to FIGS.

Since the cushion upper part 110 of the cushion 100 is a portion of the user's body, it is desirable to provide a comfort to the user by incorporating a cotton or a sponge. The lower cushion 120 includes a heat insulating material, It is desirable to make it possible to reduce it. In addition, the outer surface of the cushion 100 is waterproof and anti-fouling, and the thermal cushion can be cleanly used without washing.

3 is a perspective view of a power supply unit of a portable heating cushion according to an embodiment of the present invention. 3, the power supply unit 200 includes a power switch 210, a temperature indicator 220 that can be checked when the temperature of the heating element 120 is selected to be strong, medium, or weak, and the USB terminal 230 ).

When the power switch 210 of the portable heating cushion according to an embodiment of the present invention is pressed for 3 seconds, the thermal cushion is turned on. After the power cushion is similarly used, the power switch 210 is turned on for 3 seconds The thermal cushion is turned OFF. Since the user can set the temperature of the heating cushion to a desired temperature among the steel, the middle, and the medicines, the user can set the desired temperature of the steel, the middle, and the medicament by pressing the power switch 210 and releasing it immediately. At this time, when the heating element 120 is set to the steel, the temperature indicator 220 is red, and when the heating element 120 is set medium, the temperature indicator 220 is green, The blue lamp is turned on in the temperature indicator 220 so that the user can easily confirm the set temperature with the naked eye.

The power ON / OFF and temperature setting method of the power source unit 200 are merely examples, and can be easily changed by a person skilled in the art.

Also, the USB terminal 230 to which current is supplied may be formed of 5pin, 8pin, C type, or the like, and may further include a conversion gender.

4 and 5 illustrate a method of storing a portable heating cushion according to an embodiment of the present invention. The cushion 100 may be folded or folded as shown in FIG. 4, and the cushion 100, which is folded or folded on the cushion pouch 400 as shown in FIG. 5, There is an effect that it is easy.

FIG. 6 is a flowchart illustrating a method of using a portable thermal cushion according to an exemplary embodiment of the present invention. At this time, it is assumed that the heating cushion of the present invention receives current from the portable auxiliary battery.

A thermal cushion ON step S100 of turning on the thermal cushion by pressing the power switch 210 for about 3 seconds by inserting a USB cable into the USB terminal 230 of the power unit 200, A temperature setting step S200 for setting the temperature to a desired temperature by the user, a current supplying step for supplying a current to the heating element 200 to generate the heating element 200 at a temperature set by the user in the temperature setting step S200, A temperature measurement step S400 of measuring the temperature of the heating element 200 by the temperature sensing sensor 122 attached to the heating element 200 and a temperature measurement step S400 of measuring the temperature of the heating element 200, The temperature of the heating element 200 is equal to or higher than a temperature set by the user in the determining step S500 and the determining step S500 or the determining step S500, If it is judged that the pre- Proceed with the supply stop step (S600) for stopping the feed, and is characterized in that the temperature of the heating element 200 is conducted to the current supply step (S300) again if it is determined lower than the user set temperature.

As described above, even if the current is not supplied to the heating element 120 by the controller in the current supply stop step S600, the temperature of the temperature set by the user without entering or exiting the heat by the latent heat material built in the heating element 120 If all the heat is released from the latent heat material and the temperature of the heating element 120 is lower than the set temperature, the current returns to the current supplying step S300 and the current can be supplied from the power source 200 .

FIG. 7 shows a table comparing the temperature, power, and service time of a conventional thermal cushion and a portable thermal cushion according to an embodiment of the present invention. At this time, the cushion without the control part is a conventional warm cushion, and the cushion with the control part is the thermal cushion of the present invention. The specifications of the battery used for comparison are 5000mAh, 5V, 2.1A.

As shown in the table, when comparing the conventional warm cushion and the thermal cushion of the present invention, the power W does not show a large difference. However, when comparing the power amount Wh, it can be seen that the conventional thermal cushion without a control unit uses about twice as much power as the thermal cushion according to the present invention having the control unit.

Also, when the heating temperature is compared, the temperature is 54 deg. C when the conventional heating cushion without the control section is set to weak, which is similar to 53 deg. C when the heating cushion of the present invention is set to the steel. In addition, when the conventional thermal cushion is set to steel, there is a risk of burning to the user at about 95 캜.

Since the conventional heating cushion does not include the control unit, if the power supply unit is connected, power is continuously supplied to the heating cushion so that the heating body is continuously heated to provide a thermal cushion having a temperature higher than that of the heating cushion of the present invention, This may cause a risk of burns to the user and may cause a fire.

However, since the heating cushion of the present invention is not supplied with current by the control unit when the temperature is higher than a predetermined temperature, there is no danger that the heating body 120 is overheated, so that the user can use the heating cushion without worrying about burns or fire.

FIG. 8 is a graph showing a comparison of the use time of a conventional warming cushion and a portable warming cushion according to an embodiment of the present invention. When the temperature of the warming cushion is set at about 3.9 hours, Can be used for 13.1 hours. When set to medium, the conventional warm cushion can be used for 2.4 hours, and the thermal cushion of the present invention can be used for 10.7 hours. When the temperature is set to the steady state, the conventional warm cushion can be used for 1.4 hours, and the thermal cushion of the present invention can be used for 4.9 hours.

The time when the heating cushion can be used when the heating cushion is set to be about 3.5 times longer than that of the conventional heating cushion of the present invention.

9 is a plan view of a portable warm cushion according to another embodiment of the present invention. As shown in FIG. 9, the cushion 100 is provided with an auxiliary battery storage part 310 in the form of a bag which is opened at only one side of a corner and can receive the auxiliary battery. The cushion 100 is provided with the cushion 100 and the auxiliary battery storage part 310 serving as the auxiliary battery pouch 300 without requiring the auxiliary battery pouch 300 separately, So that there is an effect that the portability is further facilitated.

At this time, the auxiliary battery storage unit 310 is preferably disposed at an edge of the cushion 100, which is not touching the user's body, and is provided at an edge near the power source unit 200 .

In addition, the portable thermal cushion according to another embodiment of the present invention can be stored and carried in the cushion pouch 400 in a folded or folded state, similar to the portable thermal cushion according to the embodiment of the present invention.

The technical idea should not be construed as being limited to the above-described embodiment of the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Accordingly, such modifications and changes are within the scope of protection of the present invention as long as it is obvious to those skilled in the art.

[Description of Symbols]

100 cushion

110 Cushion top

120 heating element

121 Carbon heating element

122 Temperature sensor

130 cushion bottom

200 power supply unit

210 Power switch

220 temperature indicator

230 USB terminal

300 auxiliary battery pouch

310 auxiliary battery storage unit

400 Cushion Pouch

Claims

A cushion (100) having a built-in heating element (120);

A temperature sensor 122 attached to the heating element 120;

And a controller for automatically controlling the current supply to the heating element 120 based on the temperature measured by the temperature sensor 122,

Wherein the heating element (120) is an elastic body in which a conductive material is mixed, and a phase change material is embedded therein.
The apparatus of claim 1,

When the temperature of the heating element 120 measured by the temperature sensor 122 is lower than the predetermined temperature, the current is continuously supplied to the heating element 120,

And does not supply current to the heating element (120) when the temperature of the heating element (120) measured by the temperature sensing sensor (122) is equal to or higher than a predetermined temperature.
The heat generating element according to claim 2,

Wherein a temperature set by a user is maintained by using heat generated from the latent heat material built in the heating element (120) when no current is supplied by the controller.
The method of claim 1, wherein the conductive material of the heating element (120)

Wherein at least one of carbon fibers, carbon black, carbon felt, carbon rods, carbon nanotubes, and carbon heating elements including graphene is selected and added to the elastic body.
The method according to claim 1,

And the resistance of the heating body (120) is between 1 and 10. [