JPH09201271A - Planar warmer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the diffusion of heat on surface cloth at the time of non-warming by constituting a surface cloth part in double layer structure composed of the warmth retaining member of prescribed thickness having warmth retaining property and elasticity and the surface cloth overlapped on this member. SOLUTION: A surface cloth part 5 is constituted in double layer structure from a warmth retaining member 11 composed of comparatively thick urethane rich in warmth retaining property and elasticity and surface cloth 12 composed of a needle punch carpet overlapped on this member 11 and bonded with an adhesive agent, etc. When a person wanting to be warmed rides on this instrument, takes warmth and leaves, the warmth retaining member 11 is elastically recovered into prescribed thickness and the surface cloth 12 and a carpet cover 13 are recovered flat as well. When the warmth retaining member 11 is recovered into prescribed thickness, the propagation of heat from a heating cord 7 to the surface side of the warmth retaining member 11 is suppressed by the above thickness. Therefore, the heat of the heating cord 7 is stored inside the warmth retaining member 11, thus, the diffusion of heat to the surface side of the warmth retaining member 11 is suppressed, corresponding to this effect, the quantity of electrification to the heating cord 7 is lowered, and power is prevented from being wasted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface warming tool such as a hot carpet which is spread on a floor in a room for use.

[0002]

2. Description of the Related Art In this type of sheet heating device, a heat generating unit is arranged on a heat insulating material, and the heat generating unit is sandwiched between the heat insulating material and the surface cloth portion to be integrated with each other. A controller for controlling the temperature by controlling the energization of the heat generating cord of the heat generating unit is attached to one side edge of the planar heating tool. The front cloth portion is made of a relatively thin fiber material such as a needle punched carpet, and a warmer rides on the front cloth portion to keep warm.

[0003]

However, in this conventional sheet heating device, the heat of the heat-generating unit is transmitted to the front cloth portion even when the warmer is not on the front cloth portion. Actively dissipates from the surface to the outside air, which wastes power and wastes economic efficiency.

The present invention has been made in view of such a point, and an object thereof is to suppress the dissipation of heat from the surface of the surface cloth portion during non-heating and improve the economical efficiency. An object is to provide a sheet-shaped warming tool.

[0005]

In order to achieve such an object, the present invention arranges a heat generating unit on a heat insulating material, and sandwiches the heat generating unit, and superimposes a front cloth portion on the heat insulating material. In a surface heating tool that is integrated together,
It is characterized in that the surface cloth portion is constituted by a two-layer structure of a heat insulating material having a predetermined thickness having heat insulating properties and elasticity, and a surface cloth overlapping the heat insulating material.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 shows the overall configuration of the planar heating tool, in which 1 is the heating tool body, and the controller 2 is attached to one side edge of the heating tool body 1.

A cross-sectional structure of the main body 1 of the warming implement is shown in FIG. 1, 3 is a heat insulating material made of felt or the like, on which the heat generating unit 4 is arranged, and the heat generating unit 4 is sandwiched. Further, the front cloth portion 5 is superposed on the heat insulating material 3.

The heat generating unit 4 is formed by wiring, for example, a heat generating cord 7 and a heat sensitive cord 8 on a non-woven fabric 6 in a meandering shape, and the heat generating unit 4 is arranged between a pair of heat-sealing sheets 9 and 10 which are vertically stacked. It is sandwiched between. Then, the heat insulating material 3, the heat generating unit 4, and the surface material portion 5 are bonded to each other by heat fusion by the heat fusion sheets 9 and 10 to be assembled as an integral warming tool body 1. In this case, using only one heat-sealing sheet 10, the heat insulating material 3,
The heat generating unit 4 and the front cloth portion 5 may be integrally bonded.

The front cloth portion 5 is a heat insulating material 11 made of urethane or the like having a relatively large thickness which is excellent in heat insulating property and elasticity,
A two-layer structure is formed by superposing on the heat insulating material 11 and a surface material 12 made of a needle punched carpet or the like joined by an adhesive or the like. A carpet cover 13 is removably laid on the front fabric 12.

The heat generating cord 7 and the heat sensitive cord 8 of the heat generating unit 4 are connected to the controller 2, and the heat generating cord 7 is energized through the controller 2, and the heat generating cord 7 generates heat by this energization, and the heat is displayed. It is transmitted to the heat insulating material 11 of the cloth part 5.

The heat-sensitive cord 8 senses the heat of the heat-generating cord 7 and changes the electric resistance according to the sensed temperature. The controller 2 controls the energization of the heat generating cord 7 based on the resistance change of the heat sensitive cord 8, and the heat generation amount of the heat generating cord 7 is maintained at the set value by this control.

Here, when the warming person is not on the warming tool body 1 and the warming person is not warming up, each part of the heat insulating material 11 is shown in FIG.
As shown in FIG. 5, the thickness is maintained constant, so that the heat released from the heat generating cord 7 is retained inside the heat insulating material 11, and the heat radiation from the surface of the heat insulating material 11 is suppressed.

In this state, when a warmer rides on the warming tool body 1 and sits down, for example, on the carpet cover 13 as shown in FIG. 2, a load by the human body is applied to the seated local area A. The heat insulating material 11 is elastically deformed and compressed by this load, so that the outer cloth 1 at the local location A is
2 and the carpet cover 13 approach the heat generating cord 7. Therefore, the heat-generating code 7 is applied to the warmer above the local location A
It conducts heat well and can comfortably and effectively collect heat.

On the other hand, when the warmer leaves the warming tool body 1, the heat retaining material 11 at the local portion A elastically restores to a predetermined thickness, and the front cloth 12 and the carpet cover 13 are also flat. Return to.

When the heat insulating material 11 returns to a predetermined thickness, the heat conduction from the heat generating cord 7 to the surface side of the heat insulating material 11 is suppressed by the thickness, and therefore the heat of the heat generating cord 7 is kept.
Therefore, heat is prevented from being dissipated to the surface side of the heat insulating material 11, and accordingly, the amount of electricity supplied to the heat generating cord 7 is reduced, and unnecessary power consumption is avoided.

In this way, when the warmer is on the warming tool body 1, the heat of the heat generating cord 7 can be effectively transmitted to the warmer and the warmer body can be comfortably warmed. During non-warming when the warmer has left from above 1, heat of the heat-generating cord 7 is retained in the heat insulating material 11 and is suppressed from being dissipated to the surface side thereof, so that useless power consumption during non-warming is avoided. Economical efficiency is improved.

Note that the carpet cover 13 laid on the front cloth portion 5 is used as needed, and the front cloth 12 of the front cloth portion 5 is used without using the carpet cover 13.
May be exposed as it is and used as the surface of the surface heating tool.

The outer cloth 12 of the outer cloth part 5 has a function of maintaining the decorative appearance of the sheet-like warming tool and providing a comfortable feeling of use, and protects the lower heat insulating material 11 from deterioration over time and scratches. In addition to the needle punched carpet, for example, tufted carpet or non-woven fabric can be used as the material of the surface fabric 12 as a material for preventing the above.

[0019]

As described above, according to the present invention,
With a relatively thick heat insulating material that can elastically deform the front fabric part,
Since it has a two-layer structure with the surface material that overlaps this heat insulating material, it is possible to store the heat of the heat generating unit during non-heating in the heat insulating material and suppress the dissipation from the surface thereof, and thus useless power. It is possible to improve the economic efficiency by avoiding the consumption of.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a part of a sheet heating device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the state of the surface heating tool during heating.

FIG. 3 is a perspective view showing an overall appearance of the planar heating tool.

[Explanation of symbols]

 3 ... Insulating material 4 ... Heating unit 5 ... Outer fabric part 11 ... Insulating material 12 ... Outer fabric

Claims (1)

[Claims] 1. A planar warming tool in which a heat generating unit is disposed on a heat insulating material, and a heat generating unit is sandwiched between the heat insulating material and a surface material portion is superposed on the heat insulating material to be integrated with each other. A planar warming tool having a two-layer structure comprising a heat insulating material having a predetermined thickness having heat insulating properties and elasticity, and a surface fabric laminated on the heat insulating material.