JPH0645794Y2 - Electric kotatsu - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to an electric kotatsu, and more particularly to an electric kotatsu provided with one column at a substantially central portion of a top plate.

2. Description of the Related Art Conventionally, electric kotatsu has legs arranged at each of the four corners of the top plate, and a fan and a heating element are provided in the heater unit to increase the space used and make it easier for warmers to move their feet. By forcibly discharging the hot air inside the unit to the outside and lowering the temperature of each component, the space distance between the heating element and the protective net or the reflector is reduced, and the heater unit itself has been made thinner.

However, the shape of the electric kotatsu itself is generally one with legs attached to the four corners of the wooden frame, and when lying sideways in the kotatsu or when used by a large number of people, the legs become an obstacle and cause inconvenience. Was there. Therefore, electric kotatsu as shown in Japanese Utility Model Publication No. 55-150957 is considered. The electric kotatsu has a hollow leg (hereinafter referred to as a strut), in which a motor having a heating element and a fan is disposed, is fixed at a position substantially in the center below the top plate. A suction hole is formed in the side wall, and an outlet hole is formed in the side wall below the suction hole. With the above configuration, when the fan rotates, the air above the kotatsu is sucked through the suction hole and heated by the heating element. Then, the heated air is blown out from the blowout holes to warm the inside of the kotatsu.

Problems to be Solved by the Invention However, in the electric kotatsu having the above-described configuration, since the heating element is housed in the supporting column, the supporting column is heated more than necessary by the heating element itself and the air heated by the heating element. When the above-mentioned support touched the support, the warmer had an unpleasant sensation. In addition, since the heating element is housed inside the strut so that the light from the heating element does not easily leak to the outside of the strut, the warmer obtains the visual effect of feeling that he is using an electric kotatsu by looking at the heating element. I couldn't.

The present invention solves the above-mentioned conventional problems and provides an electric kotatsu having a simple structure and a large heating space.

Means for Solving the Problems The electric kotatsu of the present invention has a cylindrical support having a cavity inside, which is fixed to the lower surface of a top plate so as to hang down through a reflector, and the cavity is provided on the side wall of the support. A suction hole for sucking air into the cavity is formed by rotational driving of a fan provided inside,
A pair of blow-out holes for blowing out the sucked air from the inside of the cavity are formed so as to be located above the suction holes and on the side walls of the columns facing each other through the cavity of the columns, respectively. It is configured by providing a pair of rod-shaped heating elements that are located outside each of the outlet holes and are parallel to each other, and the heating elements are shifted in different directions in the longitudinal direction thereof from the side wall of the column. They are arranged so as to protrude from the width.

The electric kotatsu of the present invention is provided with a pair of heating elements which are located outside of a pair of blow-out holes formed in the side walls of the pillar so as to face each other around the pillar and are parallel to each other. At the same time, since the respective heat generating elements are arranged so as to be displaced in mutually different longitudinal directions so as to project from the lateral width of the side wall of the supporting column, it is possible to reduce the radiant heat of the heating element being blocked by the supporting column, Warmth becomes more uniform on the side with and without the heating element. Further, since the radiant heat of the heating element is less likely to be applied to the support, the support does not become too hot, and the warmer does not feel uncomfortable when the warmer touches the support.

Embodiment An electric kotatsu according to an embodiment of the present invention will now be described with reference to FIGS.
Description will be given with reference to the drawing of FIG.

2 and 3, 1 is a top plate, 2 is a column,
The top plate 1 is fixed by bolts 3 to a substantially central portion of the lower surface of the top plate 1 via a reflector plate 10 of a heater unit 5 having a structure described later. A decorative plate 18 is placed on the top surface of the top plate 1. When using as a kotatsu, a futon is put between the top plate 1 and the decorative plate 18.

The pillar 2 has a rectangular tubular shape and is hollow inside, and an outlet hole 19 through which a flow of air by the fan 14 is blown out is provided above each side wall of the pillar 2, and an inlet hole 20 is provided below the pillar 2. The support column 2 is made of a lightweight alloy such as aluminum having good thermal conductivity. Reference numeral 4 denotes a metal bottom plate, which is fixed to the lower end of the column 2 with bolts 21.
A mat 7 made of cloth is provided on the surface of the bottom plate 4 so as to cover the entire surface.

Next, the heater unit 5 will be described with reference to FIGS. 1, 2, and 4.

The reflection plate 10 has a flat plate shape and its four side edges are inclined downward, and a through hole 11 through which the bolt 3 penetrates is provided. At the center of the reflector 10, the reflector
A motor mounting member 12 is provided so as to hang down below 10, and a motor 13 is disposed on the upper surface thereof. And reflector
A flat plate fan 14 driven by the motor 13 is provided between the motor 10 and the motor 13. Further, a pair of rod-shaped heating elements 17 fixed to the reflection plate below the reflection plate 10 and outside the fan 14 and facing each other in parallel via the fan 14 are arranged. The protective net 8 includes the heating element 17 and the reflector 10.
It is arranged below and is fixed to the reflection plate 10. The pillar 2 is provided at a position avoiding the heating element 17 in the substantially central portion of the protective net 8.
Is provided with an opening 9 into which the
When the pillar 2 is inserted into the
14 and the motor 13 are located, and the heating element 17 is located outside the column 2. The pair of rod-shaped heating elements 17 are opposed to each other in the blow-out holes 19 formed in the side walls of the pillar 2 so as to face each other through the cavity of the pillar 2 like the heater unit 5 shown in FIG. Located on the outer side of the blowout hole 19 of
The heating elements 17 are provided so as to be parallel to each other, and the respective heating elements 17 are arranged so as to project from the lateral width of the side wall of the column by shifting their longitudinal directions in mutually different directions.

Here, the flow of warm air will be described with reference to FIG. 2. The cool air sucked from the suction holes 20 by the rotation of the fan 14 rises while taking heat from the support columns 2 and passes through the blowout holes 19 to generate heat. It is blown directly or in the vicinity of 17 to absorb heat and become warm air, which flows obliquely downward along the reflector 10 to warm the user. Then, the warm air is cooled and becomes cold air, and the process of being sucked in the suction hole 20 again is repeated.

Effects of the Invention As described above, the electric kotatsu of the present invention is arranged so that a single strut hangs down in the approximate center of the lower surface of the top plate, and the side walls of the strut are opposed to each other through the cavity of the strut. A pair of heating elements parallel to each other are provided on the outer sides of the pair of blow-out holes formed, respectively, and the heating elements are arranged so as to be displaced in mutually different directions in the longitudinal direction so as to project from the lateral width of the side wall of the column. Since it is provided, the radiant heat of the heating element is less likely to be blocked by the support, and the warmth can be made more uniform on the side with the heating element and on the side without the heating element. Further, since the radiant heat of the heating element is less likely to be applied to the support, the support does not become too hot, and the warmer does not feel uncomfortable when touching the support. Further, since the warmer can see the light of the heating element, the visual effect can be obtained.

[Brief description of drawings]

FIG. 1 is a bottom view of a main part of a heater unit used for an electric kotatsu according to an embodiment of the present invention, FIG. 2 is a sectional side view of the electric kotatsu, and FIG. 3 is an exploded perspective view of the electric kotatsu.
FIG. 4 is a perspective view of a heater unit used in the electric kotatsu. 1 ... Top plate, 2 ... Post, 5 ... Heater unit, 8
...... Protective net, 10 ...... Reflector, 13 ...... Motor, 14 ...... Fan, 17 ...... Heating element.

Claims (1)

[Scope of utility model registration request] 1. A reflecting plate provided substantially in the center of the lower surface of the top plate, and a cylindrical support having a hollow inside, which is fixed to the lower surface of the top plate so as to hang down through the reflecting plate. , A fan provided in the cavity, a suction hole formed in a side wall of the column so as to suck air into the cavity by rotationally driving the fan, and the suction hole is located above the suction hole.
And, a pair of blowout holes for blowing out the sucked air from the inside of the cavity formed in the side walls of the pole so as to face each other through the cavity of the pole, and positioned outside the respective blowout holes. And a pair of rod-shaped heating elements that are parallel to each other and are arranged so as to protrude from the lateral width of the side wall of the support column while being shifted in different directions in the longitudinal direction. An electric kotatsu featuring