JPH11173554A - Panel heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use both radiation heat and convection heat to heating to improve a heating efficiency, and eliminate the effect of heat onto a desk by a method wherein a plurality of sheets of heat generating bodies are arranged side by side in about a U-shape and a cover, formed of a fabric, is fixed detachably so as to cover the upper surface opening of the heat generating body. SOLUTION: A heat generating element 1 is buried in a heat generating body 2 and a heat radiating plate and a surface fabric are formed on the surface side while a heat insulating member 7 is formed on the rear surface side to provide three surfaces side by side and the connecting units of them are constituted so as to be bendable. a rim fabric 8 is sewn to the outer periphery of three surfaces of the heat generating body 2 while a power supply switch 11 is provided at the corner of the rim fabric 8. A cover 12, formed of a fabric so as to cover the opening unit of upper surface, formed in a U-shape by bending the connecting unit, is provided and is connected detachably to the rim fabric 8 at the upper part of the front and rear surfaces. In case of heating, feet are inserted into the central part of the U-shaped three surfaces heat generating body 2. When the cover is not necessary, the cover can be removed and the heater can be used as a panel heater having no cover.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in the heating efficiency of a panel heater, particularly a panel heater which is arranged in a U-shape under a desk or the like so as to heat feet or the like.

[0002]

2. Description of the Related Art A conventional panel heater of this type is generally as shown in Japanese Patent Publication No. 3-73782. As shown in FIGS. 6 and 7, this panel heater is formed by arranging a plurality of heating elements 2 in each of which a heating element 1 is buried therein, forming a U-shape, and installing the heater under a desk or the like. The heating element 2 is configured to be heated by energizing the heating element 1 and the radiation from each surface of the heating element 2 formed in a U-shape. The legs were heated by heat.

[0003]

However, in the conventional panel heater, since the upper surface portion 3 of the heating element 2 formed in a U-shape is in an open state, the convective heat passing through the surface of the heating element 2 is not increased. 3, there is a problem that the heat is naturally dissipated and does not contribute to the warming of the legs, resulting in poor heating efficiency.

Further, when the desk 4 is installed under the desk 4, the convective heat naturally radiated from the upper surface 3 heats the lower part of the desk 4 in a concentrated manner, and there is a problem that the desk 4 may be damaged. .

[0005]

According to the present invention, in order to solve the above-mentioned problems, a plurality of heating elements are juxtaposed in a substantially U-shape, and the opening is covered by a top opening of the heating element. A cover made of cloth is provided, and the cover is detachably fixed on one side to the upper portion of the back surface of the heating element in the front portion.

According to the above invention, since the upper opening of the heating element is covered by the cover, the convective heat passing through the surface of the heating element is not radiated upward but is radiated from the opening on the leg side. Convection heat, in addition to radiant heat, also contributes to warming, increasing heating efficiency and eliminating the need for the convection heat to directly heat the lower part of the desk, thereby eliminating thermal effects on the desk.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention, a plurality of heating elements formed in a thin plate shape with a heating element embedded therein are arranged in a substantially U-shape, and a substantially U-shaped opening is formed on the upper surface of the heating element. It has a cover that covers the part.

Since the cover covers the upper opening of the heating element arranged side by side in a substantially U-shape, convective heat passing through the surface of the heating element is prevented from radiating upward and is radiated from the opening on the leg side. Convection heat in addition to radiant heat from the heating element also contributes to warming of the feet, thereby increasing heating efficiency and eliminating the influence of convection heat directly on the desk lower portion, thereby eliminating heat influence on the desk.

The cover is made of cloth and held at the upper end of the substantially U-shaped heating element. Since the cover is held at the upper end of the heating element with a fabric, even if the cover is hung on the leg, the leg can be freely moved without feeling heavy and the leg can be kept warm by the fabric cover. Also, when the cover is not needed during heating, the cover can be hung on the back of the heating element, so the heat insulation effect on the back of the heating element increases, the radiant heat from the heating element increases, and the cover is on the back even during non-heating, so it is in the way. No.

Further, one side of the cover is detachably fixed to the upper portion of the rear surface of the substantially U-shaped heating element.

Since the cover is detachable from the back surface of the heating element, when the cover is unnecessary, it can be easily removed and used as a panel heater without the cover.

[0012] Further, it has a plurality of heating elements that can be freely bent at the connecting portion, a rim cloth sewn around the outer circumference of the heating element, and a cloth bonding material sewn simultaneously with the rim cloth on the upper part of the back surface of the heating element. Since one side of the formed cover is detachable with the cloth bonding material, the cloth bonding part can be formed at the same time as the edge cloth sewing without separately providing a cloth bonding part for attaching and detaching the cover. Since it is bendable, it can be folded down and made smaller.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

1 is an external view of a panel heater according to an embodiment of the present invention, FIG. 2 is a rear view of the panel heater, FIG. 3 is an exploded front view of the panel heater, FIG. 4 is a partial sectional view of the panel heater, and FIG. It is a use state figure of a panel heater.

In the figure, reference numeral 2 denotes a heating element, which has a heating element 1 embedded therein, and a radiator plate 5 and a cover cloth 6 on the surface side.
A heat insulating material 7 is formed on the back surface side, three surfaces are arranged side by side, and it is configured to be freely bendable at a connecting portion 9, and an edge cloth 8 is sewn around the outer periphery of the three surfaces of the heating element 2. doing. The heating element 1 is arranged on almost the entire surface of the heat radiating plate 5 on each surface. A switch for turning on / off the power to the end of the heating element 2 is provided near the heating element 1 with an overheat prevention device 10 for detecting an abnormal temperature. The unit 11 is constituted. The heating element 2 is bent at the connecting portion 9 so as to have a U-shape, and the cover 1 is formed of cloth so as to cover the opening of the upper surface portion 3.
2 is provided, and one side of the back of the cover 12 is detachably connected to a cloth bonding material 13 sewn simultaneously with the edge cloth 8 on the front and back of the heating element 2. Perform in the center of body 2.

Next, the operation of the heating element 2 will be described.
When the heater element 1 is energized by operating the toe switch section 11, the heating element 1 generates heat, the radiator plate 5 is heated, and the back surface is insulated by the heat insulating material 7, so that radiant heat is radiated from the surface cloth 6. Convection heat passing through the surface cloth 6 is covered only on the upper surface of the heating element 2 by the cover 12 so that the opening at the time of warming is limited to the front with the legs inserted, and convective heat generated from the heating element 2 is used for heating at the foot to be heated. Radiated heat and convective heat both contribute to heating, and when used inside the desk 4, the convective heat is blocked by the cover 12 and does not pass directly below the desk 4. In addition, since the cover 12 rotates about the cloth bonding material 13 on the front and back of the heating element 2 as a fulcrum, the cover 12 can be easily turned upward and dropped on the back of the heating element 2.

[0017]

As is clear from the above embodiments, according to the panel heater of the present invention, since the cover is formed so as to cover the upper opening of the heating elements arranged in a substantially U-shape, the convection Prevents heat from radiating upward and radiates heat from the opening on the leg side, so convection heat in addition to radiant heat also contributes to heating of the leg, increasing heating efficiency and direct convection heat Has the advantageous effect of eliminating the effect of heat on the desk.

Further, since the cover is made of cloth and held at the upper end of the heating element, even if the cover is hung on the leg, the leg can be freely moved without feeling heavy and the leg can be kept warm by the cover. By hanging the cover, the cover is not in the way of improving the radiant heat and moving after the warming ends, so that the cover is easy to use.

Further, since the cover is detachable from the back surface of the heating element, when the cover is unnecessary, it can be easily removed and used as a panel heater without the cover.

In addition, the edge cloth sewn around the outer periphery of the heating element, the cloth bonding material sewn simultaneously, and one side of the cover are made detachable.
The cloth joint can be formed at the same time as the sewn edge cloth without separately providing a cloth joint for attaching and detaching the cover. This is rational, and the connecting part is freely bendable.

[Brief description of the drawings]

FIG. 1 is an external view of a panel heater according to an embodiment of the present invention.

FIG. 2 is a rear view of the panel heater.

FIG. 3 is a front development view of the panel heater.

FIG. 4 is a partial cross-sectional view of the panel heater.

FIG. 5 is a view showing a use state of the panel heater.

FIG. 6 is an external view of a conventional panel heater.

FIG. 7 is a diagram showing a state of using a conventional panel heater.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heating element 2 Heating element 3 Top surface part 8 Edge cloth 9 Connecting part 12 Cover 13 Cloth bonding material

Claims (4)

[Claims] 1. A cover for covering a substantially U-shaped opening on an upper surface portion of a plurality of heating elements formed in a thin plate shape with a heating element embedded therein and having a substantially U-shape. Having a panel heater. 2. The panel heater according to claim 1, wherein the cover is formed of cloth and held at an upper end of a substantially U-shaped heating element. 3. The panel heater according to claim 1, wherein the cover is formed of a cloth, and one side thereof is detachably fixed to an upper portion of a back surface of the substantially U-shaped heating element. 4. A heating element having a plurality of heating elements that can be freely bent at a connecting portion, an edge cloth sewn around the outer periphery of the heating element, and a cloth bonding material sewn simultaneously with the edge cloth on an upper part of the back surface of the heating element. 2. The panel heater according to claim 1, wherein one side of the cover formed of the cloth is detachable from the cloth bonding material.