JPS6220187Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement of a foot warmer that is installed under a desk or the like and used while sitting on a chair.

Conventionally, this type of foot warmer uses heat generated from a heater 21 provided inside a housing 20 as shown in FIG. 1 or FIG. The hot air generated by the wind generator heats the back of the foot directly by conduction or hot air, and since it can only heat the area below the ankle, it cannot sufficiently heat the upper leg, such as the shins and knees. This drawback was compensated for by using blankets, etc., or by wearing special winter pants or skirts as shown in Figure 3. However, it has drawbacks such as being troublesome to put on and take off, and it also limits the range of physical activity.

This idea attempts to eliminate these drawbacks, and is made of a flexible, breathable, and airtight material that utilizes hot air and air pressure from a hot air generator installed inside the housing. By inflating the bag and blowing out hot air from around it, the pressure loss in the bag warms the inside of the housing, and the warm air is circulated between the housing and the bag, effectively heating the feet from the back to the top. be.

An embodiment of this invention will be described below based on FIG. 4. In the figure, 1 is a housing with a footrest 2 made of a material with good heat conduction on the top surface, a hot air outlet 3,
3', a wind suction port 4 provided on the footrest 2, and a wind suction port 4' provided on the outside of the main body. 5
is a hot air generator, which is installed to form a hot air discharge space 6 in a housing 1, and is equipped with a blower 7, a wind tunnel 8, and a heating element 9 consisting of a positive temperature coefficient thermistor.
The hot air discharge space 6 in the housing 1 and the air intake port 4 are communicated with each other, and an opening 11 is provided between the heating element 9 and the blower 7 to disperse and exhaust the air volume to the heating element 9 by adjusting the opening and closing of the damper 10. is configured to communicate with the hot air discharge space 6.

12 is joined to the hot air outlets 3 and 3', and the inner surface 12a, which communicates with each other around the periphery, has flexibility and air permeability. For example, it is a hot air bag made of nylon woven fabric, and the outer surface 12b is made of a synthetic resin material having flexibility and airtightness, and expands under the air pressure of the blower 7 to cover the area around the feet and blow hot air only to the inside. Discharge into.

In the above configuration, when the hot air foot warmer of this invention is operated, the blower 7 blows the air into the air inlets 4, 4'.
The outside air introduced from the wind tunnel 8 passes through the heating element 9
The heated air is heated by the hot air outlet 3, 3', and is discharged into the hot air discharge space 6 in the housing 1, warming the footrest 2. Warm air is discharged from an inner surface 12a that is formed to cover the surrounding area and has breathability.

In addition to preventing outside air from entering the foot side, the warm air bag 12 is flexible so that it is easy to put the foot in and take it out. can be stored in.

Further, since a positive temperature coefficient thermistor is used for the heating element 9, the temperature can be adjusted by adjusting the air volume and temperature supplied to the heating element 9. That is, by operating the damper 10, one side of the air from the blower 7 is distributed in the direction of the heating element 9, and the other side is dispersed into the opening 11 and discharged into the hot air discharge space 6, so that the air volume and pressure of the blower 7 are not affected. The output of the heating element 9 can be controlled without any problem, the temperature of the hot air can be easily adjusted, the hot tare bag 12 can always be maintained in an inflated state, and the air suction port 4 is provided on the side of the footrest 2. Therefore, only a small amount of reheating is performed due to the automatic compensation function of the temperature of the air sent out by the heating element 9, and this small amount of reheating can be sufficient for heating, resulting in high efficiency and a great effect on energy saving.

As described above, according to this invention, the hot air generator 5
The hot air bag 12, which has flexibility and breathability, is inflated by warm air and pressure from the air bag 12 to heat a wide area from the back of the foot to the upper part of the foot, and the warm air blown from the hot air bag 12 can be reused, resulting in less heat loss and energy saving. is also large.

In this embodiment, the hot air bag 12 is configured only on the periphery, but even greater effects can be obtained by configuring it also on the top surface.

[Brief explanation of the drawing]

Figure 1 shows a conventional heater-type foot warmer;
The figure shows a conventional hot air type foot warmer, Figure 3 is an example of the use of the foot warmer in Figure 1 using pants, and Figure 4
The figure is a sectional view showing a hot air foot warmer according to an embodiment of the present invention. In the figure, 1 is a housing, 2 is a footrest, 3, 3' are hot air outlets, 4 is an air intake port, 5 is a hot air generator, 7 is a blower, 9 is a heating element, 12 is a hot tare bag, 12a is the inner surface.

Claims (1)

[Scope of utility model registration request] A hot air generator consisting of a blower and a heating element, a casing that houses the hot air generator and has a footrest on the top surface, and a case that is provided to surround the footrest of the casing and has at least an inner surface. a hot air bag made of a flexible material having breathability; the inlet of the hot air generating device is opened in the footrest of the housing, and the air outlet is communicated with the hot air bag. Features a warm air foot warmer.