JP3108624B2 - Electric carpet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric carpet, and more particularly, to an electric carpet comprising a main body containing a heating element and a temperature control section for controlling the temperature of the heating element. It is concerned with the improvement of the radiation plate that emits heat.

[0002]

2. Description of the Related Art As shown in FIGS. 3 and 4, a general structure of a conventional electric carpet includes a main body 12 having a built-in heating element 11 and a temperature control section 13 for controlling the temperature of the heating element 11. As shown in FIG. Have been.

In FIG. 1, a main body 12 is constructed by embedding a heating element 11 in a main body surface material made of wool, synthetic fiber, or a blend of these.

A case 15 made of synthetic resin constituting the temperature control section 13 is attached to a peripheral corner of the main body 12, and a part of the upper surface of the case 15 is covered with a main body surface material 14. In the case 15, a power control element 16 for supplying and controlling power to the heating element 11, control boards 17 and 18 including a control circuit including the power control element 16, and radiating heat generated from the power control element 16. A heat radiating plate 19 is provided.

Control board 17, control board 18, and control board
The plate 18 and the power control element 16 are each electrically connected by a lead wire 20. One end of the heat radiating plate 19 is fixed to the power control element 16 by a screw 21, and a substantially central portion is fixed to the lower side of the upper surface of the case 15. On the other hand, the power switch 22 and the temperature control unit 23
And so on (FIG. 3). As the power control element 16, a thyristor, a triac, or the like is used, and a temperature control method for controlling the phase of the amount of power supplied to the heating element 11 is available.

In order to use the electric carpet, the operating temperature may be set by turning on the power switch 22 and then operating the temperature control unit 23. Then, the control boards 17 and 18 control the operation of the power control element 16 based on the given set temperature, and the power control element 16 supplies power to the heating element 11 in accordance with the control of the control boards 17 and 18. , Whereby the main body 12 is heated to and maintained at the set temperature.

[0007]

In the electric carpet as described above, the temperature of the power control element 16, particularly the phase control type, becomes extremely high during energization, and the heat radiating plate 19 is built in the case 15. Heat is stored in the case 15 and the power control element 16 is overheated, which causes the performance of the power control element 16 to deteriorate or cause a failure.

Further, the temperature control unit 13 in use is desirably as small as possible in order to give a feeling of discomfort when touching the body even if it is covered with the body surface material 14. In this case, the case 15 is bulky and the temperature control unit 13 is hardly reduced in size.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-described problems, and has as its object to provide an electric carpet in which heat is not stored in a case and a temperature control unit is downsized. And

[0010]

In order to achieve the above object, an electric carpet according to the present invention comprises a main body having a built-in heating element, a temperature control element for controlling the temperature of the heating element, and the like inside a case. An electric carpet comprising a temperature control unit at least partially covered by a surface material,
On the upper surface of the case of the temperature control unit,
An opening is provided in the covered part, and power is
Part of the heat sink connected to the control element, etc.
To extend to the outer surface of the case and cover with the surface material of the main body .

According to the above configuration, a part of the radiator plate connected to the power control element is extended between the outer shell and the surface material of the main body in the outer shell of the temperature controller. Is released outside the temperature control unit via the heat radiating plate, and does not stay inside the outer shell. In addition, the heat sink connected to the power control element allows the temperature control unit to be downsized.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an electric carpet according to the present invention will be described below with reference to the drawings. The concept includes products similar to electric carpets with different names, such as an electric blanket, an electric carpet, which is a smaller electric carpet, and a foot warmer used on a floor such as a kitchen in the present embodiment. Parts having the same structure as in the conventional example are denoted by the same reference numerals.

The electric carpet shown in FIGS. 1 and 2 includes a main body 12 having a built-in heating element 11 and a temperature control unit 13 for controlling the temperature of the heating element 11.

The main body 12 has a structure in which the heating element 11 is buried in a main body surface material 14 made of wool, synthetic fiber, or a blend thereof.

A case 15 made of synthetic resin constituting the temperature control section 13 is attached to a peripheral corner of the main body 12, and a part of the upper surface of the case 15 is covered with a main body surface material 14. A power control element 16 for supplying and controlling power to the heating element 11 and control boards 17 and 18 including a control circuit including the power control element 16 are built in the case 15. The control board 18 and the power control element 16 are electrically connected to each other by lead wires 20. One end of a heat radiating plate 31 is fixed to the power control element 16 with screws 21 in order to release heat generated from the power controlling element 16 during energization. The heat radiating plate 31 extends to the outside from an opening 32 provided on the upper surface of the case 15. The other end of the heat sink 31 is fixed to the case 15 by a screw 21.
Is fixed to the case 15 with a gap from the upper surface of the case 15. On the other hand, a power switch 22, a temperature control unit 23, and the like are provided on a portion of the upper surface of the case 15 that is exposed from the body surface material 14 (FIG. 1). As a material of the case 15, a synthetic resin that can withstand a temperature rise accompanying heat radiation from the power control element 16, the heat radiating plate 31, and the like is used. As the power control element 16, a thyristor, a triac, or the like is used, and as a temperature control method, there are a type that controls ON and OFF of energization to the heating element 11 and a type that controls the phase of the supplied power amount during energization. Adopted. Control board 1
Printed wiring is formed on the upper surfaces of 7, and 18, and elements such as capacitors and resistors are provided.

In order to use this electric carpet, it is sufficient to turn on the power switch 22 and then operate the temperature control unit 23 to set the use temperature, similarly to the conventional one. Then, based on the given set temperature, the control board 17
18 controls the operation of the power control element 16, and the power control element 16 controls energization of the heating element 11 in accordance with the control of the control boards 17 and 18, whereby the main body 12 is heated to the set temperature. At the same time as the temperature. Heat generated from the power control element 16 during energization is guided to the outside of the case 15 through the heat radiating plate 31, and is released to the outside air via the body surface member 14.

In this embodiment, since a part of the heat radiating plate 31 connected to the power control element 16 in the case 15 extends between the case 15 and the body surface member 14,
The heat generated from the power control element 16 can be quickly released to the outside air without being trapped in the case 15, and the operation of the power control element 16 can be maintained in a good condition.
Further, since the heat radiating plate 31 extends from the inside of the case 15 to the outside, the temperature control unit 13 can be reduced in size accordingly.

Further, since the upper surface of the power control element 16 is covered with the main body surface member 14, the heat control plate 13 is in an ON state, so that it touches the heat radiating plate 31, which is high in temperature, to cause burns, When the control unit 13 is in the OFF state, the temperature control unit 13 does not give any discomfort by touching the cooled radiator plate 31 and does not have the heating element 11 wired.
The upper body surface member 14 can be heated by the heat sink 31.

[0019]

As is clear from the above description, in the electric carpet according to the present invention, the temperature control unit
The heat sink inside the case is
Is extended on the outer surface of the base and covered with the body surface material.
The heat generated from the power control element etc.
As well as being heated in the case
Air is also efficiently released from the opening provided on the top of the case
Therefore, the temperature inside the case can be prevented from rising,
The operation of the power control element can be kept good. I
The opening provided in the case is covered with the body surface material
Is not visible from the outside, and water and
Only the intrusion does not enter the case. In addition, since the heat radiating plate extends outside the case of the temperature control unit, the size of the temperature control unit can be reduced compared to a conventional electric carpet in which the heat radiating plate is completely built in the case. .

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of an electric carpet according to the present invention.

FIG. 2 is a cross-sectional view of the electric carpet of FIG.

FIG. 3 is a perspective view showing a conventional electric carpet.

FIG. 4 is a sectional view of the electric carpet of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Heating element 12 Main body 13 Temperature control part 14 Body surface material 15 Case (outer part of temperature control part) 16 Power control element 31 Heat sink 32 Opening

Continuation of the front page (56) References Japanese Utility Model Showa 62-189517 (JP, U) Japanese Utility Model Showa 61-142219 (JP, U) Japanese Utility Model Showa 61-48689 (JP, U) Japanese Utility Model Showa 61-192214 (JP) , U) Jikken 61-33451 (JP, Y2) (58) Field surveyed (Int. Cl. ⁷ , DB name) F24D 13/02

Claims (1)

(57) [Claims] 1. A main body having a built-in heating element, and a temperature control section including a temperature control element for controlling the temperature of the heating element and the like, which is housed in a case and at least partially covered by a body surface material of the main body. In the electric carpet, the upper surface of the case of the temperature control unit , the main body surface
An opening is provided in the part covered with the material, and in the case,
Part of the heat sink connected to the power control element, etc.
Extending to the outer surface of the case through the body surface material
An electric carpet characterized by covering .