JP2000320848A - Warming tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To further warm during warming and to suppress useless power consumption during no-warming. SOLUTION: A given distance is provided between a heat generating means 10, and a temperature detecting means 11 and a sheet-form heat conduction means 13. A base material 14 having heat insulation ability and compression deformation properties is provided. Based on an output signal from a pressure- sensitive means 12 disposed at the base material 14, energization of a heat generating means 10 is controlled. This constitution further warms when a user warms himself, suppresses useless power consumption when he does not warm himself, and produces an energy saving effect.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric carpet, an electric blanket, an electric cushion, a floor heater and the like.

[0002]

2. Description of the Related Art Conventionally, a heating device of this kind includes a heating wire 1 composed of a cord-shaped tubing heater and a temperature detecting wire 2 arranged along the heating wire 1 as shown in FIG. The heat bonding sheet 4 and the surface material 5 are sequentially arranged thereon, and the heat bonding sheet 4 is melted and pressed by a hot press from above to bond with the heat insulating material 3. After bonding the surface material 5 and fixing the heating wire 1 and the temperature detection wire 2 between the heat insulating material 3 and the surface material 5, the main body 6 is formed by overlocking the outer peripheral portion with a thread. Further, a control circuit 7 for controlling the energization of the heating device is connected to the main body 6. We use dirt prevention and cover as interior on warming equipment. Note that the heat bonding sheet 4 may be formed by laminating an aluminum soaking plate 8.

[0003]

However, in the above-described conventional warming device, when the user sits on the warming device, the temperature of the seating surface is maintained by the user himself and the temperature rises. The temperature detection line 2 arranged on the seating surface detects a rise in the temperature of the seating surface, and controls the temperature of the warming implement through the control circuit 7 by an electric signal so as to lower the temperature. Originally, it is ideal for a warming device to be warmer when the user warms up, and to suppress power supply to prevent wasteful power consumption when not warming up. There was a contradiction that the power was increased when the temperature was not warmed up.

[0004] Further, there is a conventional configuration having an aluminum soaking plate 8, but the purpose of using the aluminum soaking plate 8 is to expect a soaking effect as its name implies. It has been. However, with this configuration, although a soaking effect is obtained, a heat dissipation effect is also added, so that there is a problem that power consumption increases.

An object of the present invention is to solve such a conventional problem, and an object of the present invention is to provide a warming device that is warmer when warming and suppresses unnecessary power consumption when not warming.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is provided with a predetermined distance between a heat generating means and a temperature detecting means and a heat conducting means and has heat insulating and compressive deformability. The apparatus comprises a base material, and control means for detecting loading / non-loading of a user on the upper surface of the main body based on an output signal of the pressure-sensitive means, and controlling energization to the heating means. When a user loads the upper surface of the main body by the base material and the heat conducting means, the base material is compressed and the thermal conductivity increases, and the heat of the main body below and around the user loading surface is used through the heat conducting means. Move to the person.
As described above, the heat of the main body is transferred to the user over a wide range, so that the temperature of the main body is reduced. When the temperature of the main unit decreases,
The temperature detecting means detects the temperature drop and controls the heating value to be increased by means such as increasing the duty ratio to the heating means via the control means. If no user is loaded on the upper surface of the main body, the base material acts as a heat insulating material. In addition, since the loading / non-loading of the user on the upper surface of the main body is detected based on the output signal of the pressure sensing means and the energization to the heating means is controlled, if the user is not loaded on the upper surface of the main body, the heating means is energized. Is not performed. According to the above-described operation, it is possible to provide an ideal warming device that is warmer when the user warms up and suppresses wasteful power consumption when not warming up.

[0007]

In order to solve the above-mentioned problems, the present invention is directed to a heat insulating means and a heat insulating means which are provided with a predetermined distance between the heat detecting means and the heat conducting means. And a control means for detecting loading / non-loading of the user on the upper surface of the main body based on an output signal of the pressure sensing means and controlling the energization of the heating means. When a user loads the upper surface of the main body by the base material and the heat conducting means, the base material is compressed and the thermal conductivity increases, and the heat of the main body below and around the user loading surface is used through the heat conducting means. Move to the person. As described above, the heat of the main body is transferred to the user over a wide range, so that the temperature of the main body is reduced. When the temperature of the main body decreases, the temperature detecting means detects the temperature decrease and controls the heating value to be increased by means such as increasing the duty ratio to the heating means via the control means. If no user is loaded on the upper surface of the main body, the base material acts as a heat insulating material. In addition, since the loading / non-loading of the user on the upper surface of the main body is detected based on the output signal of the pressure sensing means and the energization to the heating means is controlled, if the user is not loaded on the upper surface of the main body, the heating means is energized. Is not performed.
By the above action, when the user takes warmth, it is warmer,
When not heating, you can reduce unnecessary power consumption and save power.
An ideal warming tool can be provided.

According to a second aspect of the present invention, there is provided a piezoelectric sensor in which the pressure-sensitive means is formed by mixing a rubber-elastic organic base material with a sintered powder of a piezoelectric ceramic, molding the mixture, and performing polarization processing. High-temperature durability is improved as compared with a piezoelectric sensor made of an organic polymer material such as polyvinylidene fluoride.

According to a third aspect of the present invention, the deformation amount of the pressure-sensitive means is amplified when the user is loaded on the upper surface of the main body under the heat conducting means, and the heat-transfer means is mounted on the floor on which the main body is installed. A heat insulating layer having a compressive deformation property capable of suppressing the heat transfer of the pressure-sensitive element can improve the sensitivity of the pressure-sensitive means and can realize a warming tool with good heat insulating property.

According to a fourth aspect of the present invention, an output signal based on an operation of a user on the upper surface of the main body is detected from an output signal of the pressure sensing means to control the energization of the heating means. Since the power supply to the heat generating means is controlled by performing the human body detection while distinguishing from the other object, there is no erroneous detection and no unnecessary power supply.

According to a fifth aspect of the present invention, there is provided a high-temperature control mode for controlling the heating means at a high temperature for a predetermined time when the control means detects the loading of the user based on the output signal of the pressure-sensitive means. Is improved. The invention according to claim 6 is configured such that if the room temperature is equal to or lower than the predetermined temperature, the control is performed in the high-temperature control mode, and the usability is good.

According to the seventh aspect of the present invention, since the main body is divided into a plurality of heating sections and the loading / non-loading of the user is detected for each heating section to control the energization, the power saving is further finely adjusted according to the usage. Can be.

The invention according to an eighth aspect of the present invention has a configuration in which a heating selection section is provided so that the heating section can be controlled with only one pressure sensing means even if the main body is divided into a plurality of heating sections. Therefore, it is not necessary to provide pressure sensing means for each, and rationalization can be achieved.

Further, the invention according to claim 9 is configured such that the control means detects a body motion component based on the heartbeat and breathing of the user on the upper surface of the main body from the output signal of the pressure sensing means, and controls the energization to the heating means. Thus, the accuracy of detecting the loading / unloading of the user is improved.

[0015]

1 to 1 show an embodiment of the present invention.
This will be described with reference to FIG.

(Embodiment 1) The invention of Embodiment 1 will be described with reference to FIGS.

FIG. 1 is an external view of a warming device according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional configuration diagram at a position XX 'in FIG. On the back side of the front surface material 9, a linear heating means 10 and a temperature detecting means 11 are arranged in a plane in a predetermined pattern.
The temperature detecting means 11 is provided so as to be close to the heat generating means 10. Reference numeral 12 denotes a pressure-sensitive means, which comprises a cable-shaped piezoelectric sensor. The pressure sensing means 12 also has a predetermined pattern on the surface material 9.
Are arranged in a plane on the back side of the. The arrangement pattern of the pressure sensing means 12 is desirably arranged so as not to intersect with the heat generation means 10 and the temperature detection means 11 so as not to be affected by heat or unnecessary deformation. 13 is a sheet-like heat conducting means. Heat conducting means 13, heat generating means 10, temperature detecting means 11
A base material 14 made of a soft foamed resin such as polyurethane is provided between the pressure-sensitive device 12 and the pressure-sensitive device 12.
A heat insulating layer 15 having a predetermined thickness and made of a soft foamed resin such as polyurethane is also provided at a lower portion of 3 to form a main body 16. Reference numeral 17 denotes control means for controlling the temperature of the main body 16, which controls energization of the heat generating means 10 by signals from the temperature detecting means 11 and the pressure sensing means 12. Reference numeral 18 denotes a room temperature detecting unit for detecting a room temperature. The heat generating means 10, the temperature detecting means 11, the pressure sensing means 12, and the heat conducting means 13 are arranged at a predetermined distance.

The heat conducting means 13 is constituted by using an aluminum sheet. Aluminum sheet thickness from 5μm to 100
μm configuration. A reinforcing sheet such as polyethylene, polyester, or polypropylene is laminated on both sides or one side of the aluminum sheet. By using an aluminum sheet as the heat conducting means 13, high heat conductivity can be realized at low cost. However, in order to ensure performance, it is necessary to secure a thickness of at least 5 μm or more. On the other hand, in order to secure flexibility as a constituent material, it is desirable that the thickness be conversely within 100 μm. Further, in order to ensure bending durability, by forming a reinforcing sheet on both sides or one side of the aluminum sheet, it is possible to prevent the aluminum sheet from being divided by repeated loads.

The same material may be used for the base material 14 and the heat insulating layer 15. However, the thickness of the heat insulating layer 15 may be made larger than the base material 14, or a material having a higher heat insulating property than the base material 14 may be used. 1
5 may be used. In addition, the base material 14 is better than the heat insulating layer 15.
May be made more compressible.

FIG. 3 is a sectional view of the pressure sensing means 12.
As shown in FIG. 3, the pressure sensing means 12 comprises a piezoelectric material 20, an outer electrode 21, and a protective coating layer 2 coaxially around a center electrode 19.
2 is a piezoelectric sensor formed by laminating and molding and polarizing. The piezoelectric material 20 is a mixture of a rubber elastic organic base material and a sintered powder of piezoelectric ceramic. For example, chlorinated polyethylene is used as the rubber elastic body, and a sintered powder of lead zirconate titanate is used as the piezoelectric ceramic.
The particle size of the sintered powder is 10 to 300 μm. The sintered powder of lead zirconate titanate (1500 parts by weight) is sufficiently mixed with a roll so as to be uniformly dispersed with respect to the chlorinated polyethylene 100, and formed into a predetermined thickness by a press machine.
The pellet is formed, tubing-processed with an extruder, formed coaxially with the center electrode 19, the outer electrode 21, and the coating layer 22, and subjected to a polarization treatment at a predetermined voltage. The outer electrode 21 is a ground electrode for signal derivation and also has a role of an electric shield. Since it is a coaxial cable-shaped piezoelectric sensor, it can be easily arranged in a meandering manner when it is disposed on the main body 16 as shown in FIG. 1, and does not need to be bent. There is more freedom of arrangement than a sensor in the shape of a circle. In addition, since the pressure sensing means 12 is configured such that both ends thereof are disposed to the control means 17 and the central electrodes 19 and the outside electrodes 21 at both ends are electrically connected to each other in the control means 17, signal processing is performed. Even if the pressure means 12 is disconnected in the middle, redundancy is provided so that a signal can be derived from at least one of both ends. Further, a configuration may be provided in which the control means 17 detects conduction of the center electrode 19 or the outer electrode 21 of the pressure sensing means 12 to determine disconnection.

FIG. 4 is a block diagram of a warming tool according to the first embodiment of the present invention. As shown in FIG. 4, the control unit 17 includes a filter unit 23 that filters a signal in a predetermined frequency region from an output signal of the pressure sensing unit 12, an amplitude calculation unit 24 that calculates the amplitude of the output signal of the filter unit 23 in a unit time. If the output signal of the power-on and amplitude calculation section 24 is equal to or greater than a preset value, a timer section 25 for starting timekeeping is provided.
5 is provided with an energization control unit 26 for stopping energization of the heat generating means 10 when the time is up, a temperature setting unit 27 for setting and storing a set temperature of the heat generating means 10, and a room temperature detecting unit 18. In order to detect an output signal based on the operation of the user on the upper surface of the main body 16 and reduce the influence of unnecessary electrical noise, the filter unit 23 is configured to filter a signal of, for example, 10 Hz or less. The control means 17 may be configured to electrically shield the whole.

Next, the operation will be described. FIG. 5 shows a cross-sectional configuration diagram when the warming device of the first embodiment is used. If the user sits on the upper surface of the main body 16 or lays down during warming, the base material 14 made of the soft foamed resin is compressed and deformed by the weight of the user. As the base material 14 is compressed and deformed, the heat generating means 1
0 and the temperature detecting means 11 are close to the heat conducting means 13.
The fact that the user takes heat on the main body 16 means that the heat of the main body transfers to the user. According to the embodiment, not only the seating surface but also heat of a wide range of the main body around the seating surface is transferred to the user via the heat conducting means 13. The temperature of the main body 16 is lowered by transferring a wide range of heat of the main body 16 to the user. Body 16
When the temperature decreases, the temperature detecting means 11 detects the temperature decrease and controls the heating means 10 via the control means 17 so as to increase the duty ratio.

When the user gets off the main body 16, the base material 14
Is restored to the initial shape, so that the heat generating means 10 and the temperature detecting means 11 have a certain distance from the heat conducting means 13. By forming the heat generating means 10 and the temperature detecting means 11 at a predetermined distance from the heat conductive means 13, the heat conductive means 13 can be prevented from functioning as a heat sink when not in use, and unnecessary energy consumption can be prevented. . In addition, heat obtained by increasing the duty ratio during use is supplied to the user and stored in the main body at the same time. When the user descends from the main body, the heat stored in the main body causes the heat generating means 1 to generate heat.
The duty ratio of 0 is suppressed below the duty ratio before use.

Since the heat insulating layer 15 is provided below the heat conducting means 13, heat dissipation to the floor is suppressed.

Also, based on the output signal of the pressure sensing means 12, whether or not the user is loaded or unloaded on the upper surface of the main body is detected, and the heating means 1 is detected.
Since the power supply to the heating unit 10 is controlled, the power supply to the heat generating means 10 is not performed if the user is not loaded on the upper surface of the main body 16. Body 16
Even if the user forgets to turn off the power, the power supply to the heating means 10 is stopped by detecting non-loading, and unnecessary power supply is not performed.

FIG. 6 shows, from the top, the output V of the filter unit 23, the output D of the amplitude calculator 24, and the on / off state of energization to the heating means 10 when the warming device of the first embodiment is used and not used. Is a characteristic diagram showing the duty ratio P to the heating means 10, in which the vertical axis represents the above-described characteristic amounts and the horizontal axis represents time t. As shown in FIG. 6, when the power to the main body 16 is turned on at time t1, the timer unit 25 for keeping the power supply to the heat generating means 10 starts counting time. During the time counting operation of the timer unit 25, the heat generation unit 1 is controlled by the power supply control unit 26.
The energization to 0 is turned on. It is assumed that the time-up time of the timer unit 25 is T0. After the power is turned on at time t1, P rises, and then stabilizes at the duty ratio P0 corresponding to the set temperature set by the temperature setting unit 27.

When the user mounts on the main body 16 at time t2, the substrate 14 is compressed by the loading operation, the pressure-sensitive means 12 is deformed, and a voltage signal corresponding to the acceleration due to the deformation is output. At this time, since the base material 14 made of a soft foamed resin such as polyurethane has a higher compressive deformation property than the heat insulating material 3 of the needle punch felt used in the conventional warming device, the base material is loaded by the user. Since the pressure-sensitive means 12 undergoes greater deformation when the pressure is compressed, a large voltage signal can be output from the pressure-sensitive means 12. Further, since the heat insulating layer 15 also has a compressive deformation property, the heat insulating layer 15 is also compressed by the loading of the user, and further amplifies the deformation amount of the pressure-sensitive means 12 as compared with a configuration in which only the base material 14 is provided. be able to. Therefore, a larger voltage signal can be output from the pressure sensing means 12, and the sensitivity of the pressure sensing means 12 is improved. This makes it possible to suppress the amplification factor at the time of signal processing by the control means 17 and reduce the influence of unnecessary electrical noise.

The output signal of the pressure sensing means 12 is supplied to a filter 23
, And the amplitude calculator 24 calculates the amplitude D of the filtered signal within a unit time. If D is equal to or greater than the preset set value D0, the timer unit 25 is reset and time measurement is started again. Thereafter, an operation due to the user's body movement or the like occurs within T0, and when D becomes D0 or more again, the timer unit 25
Resets the clock and starts a new clock. When the user gets off the main body 16 at time t3 and the time T0 elapses, the timer unit 25 times out at time t4, and the energization control unit 26
As a result, the power supply to the heating means 10 is stopped. Thereafter, when the user mounts on the main body 16 again at time t5, D becomes greater than or equal to D0 due to the operation at the time of loading, the timer unit 25 starts counting time, and the power supply to the heat generating means 10 is turned on by the power supply control unit 26.

Even if an object other than a human body such as a desk or a chair is loaded on the upper surface of the main body, there is no operation like a human body.
As described above, the power supply to the heat generating means 10 is not performed. Therefore, in the case of a generally used load detection type human body sensor, even if an object other than a person is mounted on the upper surface of the main body, erroneous detection may occur due to the weight of the object, and unnecessary energization may be performed. In the first warming device, since the loading of the user is detected based on the operation of the human body, the human body can be detected by distinguishing the person and the object, and there is no erroneous detection and unnecessary power supply is not performed.

Due to the above-described heat transfer, the duty ratio P is increased when the user is loaded, and is reduced when the user is not loaded, as shown in FIG.

When a piezoelectric sensor is used as the pressure-sensitive means 2, it is common to use a piezoelectric sensor made of an organic polymer material such as polyvinylidene fluoride. However, the crystal structure of the organic polymer material changes at a high temperature. The sensitivity becomes unstable over time. For example, if left at a high temperature of 100 ° C. for a long time, the molecular crystal of polyvinylidene fluoride oriented in the direction in which the voltage is generated is disturbed, and the crystal structure changes. For this reason, the generated voltage gradually decreases.
For this reason, in a warming tool intended to control the energization of the heat generating means by detecting a human body movement, the sensitivity of the pressure sensing means decreases over time during the generation of heat, so that the human body movement cannot be detected. On the other hand, the heat resistance of the lead zirconate titanate sintered powder in the warming implement of Example 1 is 300 ° C. to 35 ° C.
Since the temperature is 0 ° C., the polarized crystal structure does not change even when left at 100 ° C. Therefore, the detection of the human body movement can be stably maintained.

The power supply control section 26 may control the power supply to the heat generating means 10 by adding a correction amount to the set temperature set by the temperature setting section 27 based on the output signal of the room temperature detecting section 18. . That is, a reference room temperature is set, and if the detected room temperature is lower than the reference room temperature, a plus correction amount is added to the set temperature. If the detected room temperature is higher than the reference room temperature, a minus correction amount is added to the set temperature. Is added. The absolute value of the correction amount is determined so as to be proportional to the absolute value of the difference between the detected room temperature and the reference room temperature.

By the above operation, a base material having heat insulation and compressive deformation is provided at a predetermined distance between the heat generating means and the temperature detecting means and the sheet-like heat conducting means, and the base material is provided on the base material. It is designed to control the energization of the heating means based on the output signal of the pressure-sensitive means, so it is warmer when the user is warming, and suppresses wasteful power consumption when the user is not warming. Can be provided.

Further, since the pressure-sensitive means is a piezoelectric sensor formed by mixing and molding a sintered body of a piezoelectric ceramic with an organic base material of a rubber elastic body and performing a polarization treatment, a polyfluorinated material generally used is used. High-temperature durability is improved as compared with a piezoelectric sensor made of an organic polymer material such as vinylidene.

Further, when a user is loaded on the upper surface of the main body below the heat conducting means, the amount of deformation of the pressure sensitive means is amplified, and heat transfer to the floor on which the main body is installed is suppressed. Since the heat-insulating layer is provided with a compressible deformable layer, the sensitivity of the pressure-sensitive means is improved, and a warming device with good heat-insulating properties can be realized. In addition, an output signal based on the user's operation on the top surface of the main body is detected from the output signal of the pressure sensing means to control the energization of the heating means, so that a human body can be detected by distinguishing a person from an object other than a person. To control the energization of the heating means,
There is no false detection and there is no unnecessary energization.

The means for controlling the amount of heat generated by the heating means is not limited to the control of the duty ratio, but may be another means.

In the first embodiment, the sintered powder of lead zirconate titanate is used. However, it has a high heat resistance and the property of generating a voltage with respect to a pressure load due to the orientation of the crystal structure due to polarization ( The same result as described above can be obtained even when a sintered powder of lead titanate having (piezoelectric properties) is used.

In the first embodiment, the heat conducting means 13 is constituted by using an aluminum sheet. However, the heat conducting means 13 may be constituted by using a carbon sheet. It is possible to improve the feeling of use by having durability and flexibility. Also,
Lightening can also be achieved.

The loading of the user by the pressure sensing means 12
An automatic warming mode in which non-loading is detected to control the energization of the heat generating means 10;
The control unit 17 may be provided with a heating mode selection unit that allows the user to select a manual heating mode in which the energization to 0 is turned on / off, thereby improving usability.

In the first embodiment, the pressure sensing means 12 is disposed on the base material 14 on the back side of the surface material 1.
May be provided on the heat conducting means 13 or the heat insulating layer 15.

Further, as shown in FIG. 6, since the duty ratio P changes depending on the operation of the human body, the configuration may be such that the loading / non-loading of the user is detected based on the change in the duty ratio and the heating means 10 is controlled.

(Embodiment 2) The invention of Embodiment 2 will be described with reference to FIG. FIG. 7 shows the output V and the amplitude calculator 2 of the filter unit 23 when the warming device according to the second embodiment of the present invention is used and not used.
4, an output D of 4, an on / off state of energization to the heat generating means 10,
In the characteristic diagram showing the duty ratio P to the heat generating means 10, the vertical axis represents the above-described characteristic amounts and the horizontal axis represents time t. The difference from the first embodiment is that the timer unit 25 does not start timing even when the power is turned on, and the timer unit 25 starts timing only when the user is on the main body and the amplitude D becomes equal to or greater than D0. Heating means 10
And that the control means 17 is turned on.
Has a high-temperature control mode in which the heating means 10 is controlled at a high temperature for a predetermined time when the loading of the user is detected based on the output signal of the pressure-sensitive means 12.

The operation of the above configuration will be described below. As shown in FIG. 7, even when the power is turned on at time t6, the timer unit 25
Does not start timing, and when the user is on the upper surface of the main body 16 at time t7 and the amplitude D becomes equal to or greater than D0, the timer unit 25 starts counting time and the power supply control unit 26 turns on the power supply to the heat generating means 10. You. At this time, when the power supply to the heating means 10 is turned on from off, the heating means 10 is controlled at a temperature higher than the set temperature set by the temperature setting section 27 for the time T1 thereafter. By this high temperature control mode, P increases at time t7,
Thereafter, the duty ratio stabilizes at P1 corresponding to the high-temperature set temperature. Thereafter, the high temperature control mode ends at time t8, and P
Stabilizes to P0 of the duty ratio corresponding to the set temperature.
When the user gets off the main body 16 at time t9, a predetermined time T
At time t10 after 0, the power supply to the heating means 10 is turned off.
Thereafter, when the user mounts on the main body 16 again at time t11, power is supplied again in the high-temperature control mode until time t12, and then normal power supply is performed.

By the above operation, unnecessary power supply from turning on the power until the user is put on the upper surface of the main body is eliminated, and a further power saving effect is obtained.

Further, since the control means 17 has a high temperature control mode for controlling the heating means 10 at a high temperature for a predetermined time when the loading of the user is detected based on the output signal of the pressure sensing means 12,
Quick warming is improved.

If the room temperature detected by the room temperature detecting unit 18 is equal to or lower than a predetermined temperature, the control may be performed in a high temperature control mode. When the room temperature is low, quick control is performed, and when the room temperature is warm, power can be saved. A good warming tool can be realized.

(Embodiment 3) The invention of Embodiment 3 will be described with reference to FIG. FIG. 8 is a cross-sectional configuration diagram of the warming tool of the third embodiment. As shown in FIG. 8, the heating device according to the third embodiment has a one-wire heater wire 2 having two functions of a heat generation function and a temperature detection function.
8 is used. By integrating the heat generating function and the temperature detecting function, the temperature of the main body temperature can be controlled more quickly by directly detecting the temperature of the heat generating means in which the temperature of the main body is apt to significantly decrease.

Also, by increasing the temperature detection capability,
In addition to simply controlling the duty ratio in response to temperature changes using the temperature detection function, the system detects the presence or absence of a user by actively detecting the change in duty ratio, controls the temperature setting, and turns on or off the power supply. It is also possible to plan.

(Embodiment 4) The invention of Embodiment 4 will be described with reference to FIG. FIG. 9 is a configuration diagram of the warming tool of the fourth embodiment. As shown in FIG. 9, in the fourth embodiment, the main body 16 is divided into a plurality of heating sections 16a and 16b, and the respective heating sections 16a and 16b are divided.
b has both functions of heat generation and temperature detection
Wire heater wires 28a, 20b, pressure-sensitive means 12a, 12
b, heat conducting means 13a, 13b (not shown), substrate 14
a, 14b (not shown), and the control means 17 controls each of the warming sections 16a, 16a based on the output signals of the pressure sensing means 12a, 12b.
The configuration is such that the loading / non-loading of the user on the upper surface of each of the 16b is detected and the energization to the one-wire heater wires 28a and 28b is controlled for each heating section. Note that the number of heating sections is not limited to two as described above, and three or more sections may be provided.

According to the above configuration, the main body 16 is divided into a plurality of heating sections 16a and 16b, and the loading / non-loading of the user is detected for each heating section to control the energization, so that the power can be saved more finely according to the usage. Can be.

(Embodiment 5) The invention of Embodiment 5 will be described with reference to FIG. FIG. 10 is a configuration diagram of the warming tool of the fifth embodiment. As shown in FIG. 10, in the fifth embodiment, the main body 16 is divided into a plurality of warming sections 16a and 16b.
a and 16b, one-wire heater wires 28a and 28b having both a heat generation function and a temperature detection function, and heat conducting means 13a;
13b (not shown), base materials 14a and 14b (not shown)
The pressure sensing means 12 is disposed over the entire surface of the main body 16, and the control means 17 includes a heating / sampling selection unit 29 for selecting the heating / sampling units 16 a and 16 b, and is selected by the heating / sampling selection unit 29 based on the output signal of the pressure sensing means 12. 1 of the heating parts 16a and 16b
The configuration is such that the energization of the linear heater wires 28a and 28b is controlled. The warming section 16 is used as a warming surface by the warming selecting section 29.
a and 16b can be selected.
Note that the number of heating sections is not limited to two as described above, and three or more sections may be provided.

With the above configuration, even if the main body 16 is divided into a plurality of heating sections 16a and 16b, the heating sections 16a and 16b are controlled so that only one pressure sensing means 12 can control the one-wire heater wires 28a and 28b. The selection of the warming / heating selecting unit 29 eliminates the need to provide pressure sensing means in each of the plurality of warming units, thereby achieving rationalization.

(Embodiment 6) The invention of Embodiment 6 will be described with reference to FIG. FIG. 11 is a cross-sectional configuration diagram of the warming tool of the sixth embodiment. As shown in FIG. 11, the warming device of the sixth embodiment has a configuration in which a heat insulating material 30 having excellent compressive deformation properties is disposed on the upper surface of the main body 16.

With the above configuration, when the user is not on the warming implement, a high heat retaining effect can prevent unnecessary energy consumption. On the other hand, when the user is placed on the warming device, the heat insulating material 30 having excellent compressive deformation is compressed and deformed by the weight of the user, and the base material 14 in the main body is also compressed and deformed. The same operation and effect as described above can be obtained.

(Embodiment 7) The invention of Embodiment 7 will be described with reference to FIG. FIG. 12 is a cross-sectional configuration diagram of the warming tool of the seventh embodiment. As shown in FIG. 12, the warming device of the sixth embodiment is configured such that an overlay 33 having a heat insulating material 31 having excellent compressive deformability and a raised portion 32 is placed on the upper surface of the main body 16.

According to the above-described configuration, it is possible to reduce power consumption when not in use due to the heat insulating property of the overlay 33. At the time of use, the heat insulating material 31 and the raised portion 32 are compressed and deformed by the user's own weight. The thermal conductivity from the main body at the seating surface of the vehicle can be ensured. Further, the heat insulating material 30 on the upper surface of the main body 16 as described in the sixth embodiment is attached to the main body 1.
6 which is separated from 6 and used on the upper surface of the main body 16
With the configuration on the third side, the configuration can be performed without greatly increasing the thickness of the main body. (Eighth Embodiment) The invention of an eighth embodiment will be described with reference to FIGS. FIG. 13 is a block diagram of a warming device according to the eighth embodiment. The difference from the first embodiment is that the control unit 17 filters a body motion component based on the heartbeat or respiration of the human body from the output signal of the pressure sensing unit 12. Part 34
And a smoothing unit 3 for smoothing the output signal of the filter unit 34
5, the smoothing unit 35, the temperature detecting unit 11, and the temperature setting unit 2.
7 and an energization control section 36 for controlling energization of the heating means 10 based on an output signal of the room temperature detecting section 18, and a heart rate and respiration calculation section for calculating at least one of the heart rate and the respiration rate based on the output signal of the smoothing section 35. 37, and a display unit 38 for displaying the calculation result of the heartbeat respiration calculation unit 37. The filtering characteristic of the filter unit 34 is 1 to 10 Hz when heart rate is detected.
If the respiration is detected, the
The bandpass characteristic is 1 Hz. Here, for the sake of simplicity, the filter unit 34 has a band-pass characteristic for detecting a heartbeat.

The operation of the above configuration will be described below. FIG. 14 is a characteristic diagram illustrating an output signal of the filter unit 34 according to the eighth embodiment. In FIG. 14A, the vertical axis indicates the output V of the filter unit 34, and the horizontal axis indicates time t. Further, FIG.
It is an enlarged view of S part of (a). FIG. 15 shows, in order from the top, the output signal Vs of the smoothing unit 35 and the heating means 10 of the eighth embodiment.
Is a characteristic diagram showing the on / off state of energization of the power supply, where the vertical axis represents each characteristic amount and the horizontal axis represents time. When the user rests on the main body 16 as shown in FIG.
, An output signal V of the signal appears as a periodic fine signal. This signal is based on a body motion component based on the heartbeat of the human body as shown in FIG. The output V of the filter unit 34 is smoothed by the smoothing unit 35. Then, as shown in FIG. 15, when the user is put on the main body 16 and the output Vs of the smoothing unit 35 is equal to or greater than the preset set value Vs0, the power supply to the heat generating means 10 is turned on by the power supply control unit 36. If the user is not loaded on the main body 16, Vs is less than Vs0, and the power supply to the heating means 10 is turned off by the power supply control unit 36. Even if objects such as desks and chairs other than the human body are loaded on the top surface of the main body, Vs does not become Vs0 or more because there is no heartbeat like the human body,
No power is supplied to the heating means 10. In this way, a human body can be detected by distinguishing a person from an object, and there is no erroneous detection and unnecessary power supply is not performed.

In the first embodiment, the heat is supplied to the heating means 10 even after the user gets off the main body 16 until the timer unit 25 times out. However, in the eighth embodiment, FIG. As shown in FIG. 5, the power supply to the heating means 10 can be turned off as soon as the user gets off the main body 16,
There is no unnecessary power supply after the user gets off the main body 16.

The heart rate is calculated by the heart rate and breathing calculator 37 based on the output signal of the smoothing unit 35, and the calculation result is displayed on the display unit 38. The heart rate may be determined by, for example, calculating an autocorrelation coefficient or performing frequency analysis. Display 3
In FIG. 8, not only the calculation result is displayed, but also a configuration may be adopted in which, for example, if the calculation result deviates from a predetermined range, a warning is issued assuming that an abnormality has occurred in the user.

In the eighth embodiment, the filter section 34 has a band-pass characteristic for detecting a heartbeat. However, the filter section 34 has a band-pass characteristic for detecting a respiration, and the heat generating means depends on the presence or absence of a body motion signal due to the respiration. It is good also as a structure which controls energization to 10.

By the above operation, the control means is configured to detect a body motion component based on the user's heartbeat and respiration on the upper surface of the main body from the output signal of the pressure sensing means and control the energization to the heating means. The accuracy of detecting loading and non-loading of a person is improved.

Further, since the heart rate and respiration rate are calculated and displayed from the body motion component based on the detected heart rate and respiration, it is useful for health management.

In order to distinguish between a large body motion component due to a change in the posture of the user or movement of the limbs and a fine body motion component based on heartbeat and breathing, the energization control unit 36 shown in FIG.
And a set value Vs1 larger than Vs0 shown in FIG.
If s0 or more and less than Vs1, the user may be in a resting state, if Vs is equal to or more than Vs1, it may be determined that a large body motion has occurred, and if Vs is less than Vs0, it may be determined that the user is absent. In the case of this configuration, the power supply control unit 36 turns on the power supply to the heating means 10 when it is determined that the user is in a resting state, and the power supply state to the heat generation means 10 until immediately before when it is determined that a large body movement has occurred. Is held, and if it is determined that the user is absent, the power supply to the heating means 10 is turned off. If the determination that the user is in the resting state continues for a predetermined time or more, the user may be determined to be in a dozing state, and the power may be supplied to the heat generating unit 10 at a low temperature or the power may be turned off.

Further, in the warming implements of the first to eighth embodiments, an air conditioner, a video and audio equipment, etc., are detected by using a detection signal of loading / unloading of the user by the warming implement via a wired or wireless communication means. It may be configured to control another device, and energy saving of the entire device including the warming tool can be achieved.

[0065]

As described above, the warming tool according to the first aspect of the present invention has a heat insulating and compressible structure having a predetermined distance between the heat generating means and the temperature detecting means and the sheet-like heat conducting means. Since a base material having deformability is provided and the energization of the heating means is controlled based on the output signal of the pressure-sensitive means provided on the base material, the user is warmer and warmer when warming up. When there is no power consumption, wasteful power consumption can be suppressed, and there is an energy saving effect.

In the heating device according to the second aspect of the present invention, the pressure sensing means is a piezoelectric sensor which is formed by mixing and molding a sintered powder of a piezoelectric ceramic with an organic base material of a rubber elastic body and performing a polarization treatment. There is an effect that the high-temperature durability is improved as compared with a piezoelectric sensor made of an organic polymer material such as polyvinylidene fluoride which is generally used.

According to a third aspect of the present invention, there is provided a warming tool, wherein a lower portion of the heat conducting means amplifies the deformation of the pressure-sensitive means when the user is loaded on the upper surface of the main body, and the floor on which the main body is installed. Since the heat-insulating layer having a compressive deformation property capable of suppressing heat transfer to the surface is provided, there is an effect that the sensitivity of the pressure-sensitive means is improved and a warming device having good heat-insulating properties can be realized.

According to a fourth aspect of the present invention, there is provided a warming device configured to detect an output signal based on an operation of a user on the upper surface of the main body from an output signal of the pressure sensing means to control energization of the heating means. Since the power supply to the heat generating means is controlled by performing the human body detection while distinguishing the object other than the person, there is an effect that there is no erroneous detection and there is no unnecessary power supply.

The warming device according to claim 5 has a high temperature control mode in which the heating means is controlled at a high temperature for a predetermined time when the control means detects the loading of the user based on the output signal of the pressure sensing means. This has the effect of improving the performance.

The warming device according to claim 6 is configured to perform control in the high-temperature control mode when the room temperature is equal to or lower than the predetermined temperature, so that the device has quick warming when the room temperature is low and saves power when the room temperature is warm. A good warming tool can be realized.

In the warming device according to the seventh aspect, the main body is divided into a plurality of warming portions, and the energization is controlled by detecting the loading / non-loading of the user for each warming portion. There is an effect that power can be finely saved.

Further, the warming device according to the eighth aspect has a structure in which the heating unit is selected so that the heating unit can be controlled with only one pressure sensing unit even if the main body is divided into a plurality of heating units. There is an effect that it is not necessary to provide a pressure sensing means in each of the plurality of heating sections, and rationalization can be achieved.

According to a ninth aspect of the present invention, the control means detects the body movement component based on the user's heartbeat and breathing on the upper surface of the main body from the output signal of the pressure sensing means, and controls the energization to the heating means. With such a configuration, there is an effect that the accuracy of detecting the loading / non-loading of the user is improved.

[Brief description of the drawings]

FIG. 1 is an external view of a warming tool according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional configuration diagram of the heating device.

FIG. 3 is a cross-sectional configuration diagram of a pressure sensing means of the warming device.

FIG. 4 is a block diagram of the heating device.

FIG. 5 is a cross-sectional configuration diagram when the warming device is used.

FIG. 6 shows the output V of the filter unit, the output D of the amplitude calculation unit, and the energization of the heating means when the warming device is used or not used.
Characteristic diagram showing the OFF state and the duty ratio P to the heating means

FIG. 7 shows the output V of the filter unit, the output D of the amplitude calculation unit, the ON / OFF state of energization of the heating unit, and the energization of the heating unit when the warming device according to the second embodiment of the present invention is used or not used. Characteristic diagram showing the rate P

FIG. 8 is a sectional configuration diagram of a warming tool according to a third embodiment of the present invention.

FIG. 9 is a configuration diagram of a warming tool according to a fourth embodiment of the present invention.

FIG. 10 is a configuration diagram of a warming tool according to a fifth embodiment of the present invention.

FIG. 11 is a cross-sectional configuration diagram of a warming tool according to a sixth embodiment of the present invention.

FIG. 12 is a cross-sectional configuration diagram of a warming tool according to a seventh embodiment of the present invention.

FIG. 13 is a block diagram of a warming tool according to an eighth embodiment of the present invention.

FIG. 14 (a) is a characteristic diagram showing an output signal of a filter section of the warming device. FIG. 14 (b) is an enlarged view of a portion S in FIG.

FIG. 15 is a characteristic diagram showing an output signal Vs of a smoothing unit of the heating device and an on / off state of energization to a heating unit.

FIG. 16 is an external view of a conventional warming device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Heat generation means 11 Temperature detection means 12 Pressure sensing means (piezoelectric sensor) 13 Heat conduction means 14 Base material 15 Heat insulation layer 16 Main body 16a, 16b Heating part 17 Control means 18 Room temperature detecting part 25 Timer part 26 Electricity control part 29 Heating selection part

Continued on the front page (72) Inventor Biao Nagai 1006 Kazuma Kadoma, Osaka Pref. Matsushita Electric Industrial Co., Ltd. (72) Inventor Masahiko Ito 1006 Oji Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. (72) Person Yuko Fujii 1006 Kadoma, Kazuma, Kazuma, Osaka, Japan Inside Matsushita Electric Industrial Co., Ltd. (72) Inventor Satoshi 1006 Kadoma, Kazuma, Kazuma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. 1006 Kadoma Matsushita Electric Industrial Co., Ltd. (72) Inventor Takahiko Yamakita 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Masaatsu Inoue 1006 Kadoma Kadoma, Kadoma City Osaka Pref. In-house F-term (reference) 3K058 AA42 AA61 AA73 AA81 BA02 BA03 CA03 CA22 CA37 CA93 CB02 CB23 CB27 CB35 CE02 CE12 CE19 CE22 CE25 CF01 3L072 AA01 AB04 AC02 AD02 AD19 AE05 AF06 AF11 AG02

Claims (9)

[Claims] 1. A heat generating means, a temperature detecting means disposed in close proximity to the heat generating means, a sheet-like heat conducting means, and a predetermined means between the heat generating means and the temperature detecting means and the heat conducting means. A base member having a heat insulating property and a compressive deformation property provided with a distance of, and a main body including pressure-sensitive means disposed on the base material, and a top surface of the main body based on an output signal of the pressure-sensitive means. Control means for detecting the loading / non-loading of the user and controlling the energization to the heating means, and when the user is loaded on the upper surface of the main body, the base material is compressed and the thermal conductivity increases. The heat of the body below the user loading surface and the surrounding body moves to the user via the heat conducting means, and the base material acts as a heat insulating material when there is no loading of the user on the upper surface of the body. Utensils. 2. The warming tool according to claim 1, wherein the pressure-sensitive means is a piezoelectric sensor formed by mixing a sintered body of a piezoelectric ceramic with an organic base material of a rubber elastic body, molding the mixture, and performing polarization processing. 3. When the user is loaded on the upper surface of the main body below the heat conducting means, the amount of deformation of the pressure sensitive means is amplified, and heat transfer to the floor on which the main body is installed is suppressed. The warming tool according to claim 1, further comprising a heat-insulating layer having a compressive deformability capable of performing the heat-treating. 4. A timer for detecting an output signal based on an operation of a user on the upper surface of the main body from an output signal of the pressure sensing means, and starting a clock if the output signal is equal to or greater than a preset value. And an energization control unit that energizes the heat generating unit while the timer unit is counting time, and stops energizing the heat generating unit when the timer unit times out. The warming tool according to claim 1. 5. The warming-up system according to claim 1, wherein the control means has a high-temperature control mode for controlling the heating means at a high temperature for a predetermined time when the loading of the user is detected based on the output signal of the pressure-sensitive means. Utensils. 6. The warming tool according to claim 5, wherein the control means has a room temperature detecting unit for detecting a room temperature, and performs control in a high temperature control mode when the room temperature is equal to or lower than a predetermined temperature. 7. A main body is divided into a plurality of heating sections, each of which has a heating means, a temperature detection means, a heat conduction means, a base material, and a pressure sensing means, and a control means receives an output signal of said pressure sensing means. 2. A power supply to said heat generating means is controlled for each heating section by detecting whether or not a user has loaded or unloaded the upper surface of each heating section based on said information.
7. The warming tool according to any one of claims 6 to 6. 8. A main body is divided into a plurality of heating sections, and each heating section is provided with a heating means, a temperature detection means, a heat conduction means, and a base material,
The pressure sensing means is provided over the entire surface of the main body, and the control means includes a heating / heating selection section for selecting a heating section, and energizes the heating means of the heating section selected by the heating / heating selection section based on the output signal of the pressure sensing means. The warming tool according to any one of claims 1 to 6, which is controlled. 9. The control unit according to claim 1, wherein the control unit detects a body motion component based on the heartbeat and breathing of the user on the upper surface of the main body from the output signal of the pressure sensing unit and controls the energization to the heating unit. The warming tool according to claim 1.