JP2007178021A - Planar heating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a planar heating device capable of preventing surface temperature of a surface material on a case from rising beyond predetermined temperature irrespective of a configuration constituted by attaching a part of a heat radiation plate between the case and the surface material through an opening part of the case to radiate heat to the outside of the case. <P>SOLUTION: This planar heating device is provided with a heat generating body 1, a main body 2, a controller 3, the case 4, the surface material 5, an electronic control element 6, a control board 7, the heat radiation plate 7, and a temperature sensor 9 to stop current carrying to the electronic control element 6 when temperature of the heat radiation plate 8 exceeds temperature of threshold value fixed in advance by detecting temperature of the heat radiation plate 8 so that surface temperature of the surface material 5 on the case 4 does not exceed predetermined temperature. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a planar warming tool.

Conventionally, this type of planar warming tool has a main body with a built-in heating element and a controller for controlling the temperature of the heating element, and is used for local heating using heat generated from the heating element. (For example, see Patent Document 1)
FIG. 3 shows a conventional planar warmer. As shown in FIG. 2, the heating element 11, the main body 12, a controller 13, a case 14, a surface material 15, a power control element 16, a control board 17, and a radiator plate 18 are included.
JP-A-8-233298

  However, in the conventional configuration, a part of the heat radiating plate 18 connected to the power control element 16 is placed through the opening of the case 14 so that heat generated from the power control element 16 is not trapped inside the case 14. 14 and the surface material 15, and the heat is released to the outside of the case 14, so that the heat radiating plate 18 becomes very hot depending on the energizing time of the power control element 18 and the condition of the heat generation amount. In addition, there is a problem that the surface temperature of the surface material 15 on the case 14 may rise above an appropriate temperature.

  The present invention solves the above-mentioned conventional problems, and a part of the heat radiating plate 18 is attached between the case 14 and the surface material 15 through the opening of the case 14 to release heat to the outside of the case 14. An object of the present invention is to provide a planar warming tool in which the surface temperature of the surface material 15 on the case 14 does not rise above a predetermined temperature.

  In order to solve the above-described conventional problems, the planar warming device of the present invention is configured to include a temperature sensor for detecting the temperature of the heat sink.

  As a result, the temperature of the heat sink can be detected and the power control element can be de-energized when the temperature exceeds a predetermined threshold temperature. It is possible to prevent it from rising.

  The surface warmer of the present invention is provided with a temperature sensor that detects the temperature of the heat sink, thereby detecting the temperature of the heat sink and energizing the power control element when the temperature exceeds a predetermined threshold temperature. By stopping, it is possible to prevent the surface temperature of the surface material on the case from rising above a predetermined temperature.

According to a first aspect of the present invention, there is provided a heating element, a main body incorporating the heating element, a controller that controls the temperature of the heating element, a case that forms an outline of the controller, and is attached to the main body, A surface material that covers a part of the upper surface, a power control element that is built in the case and supplies and controls power to the heating element, a control board that mounts and controls the power control element, and the power control element And a temperature at which another part is attached between the case and the surface material on the outside of the case via the opening of the case, and detects the temperature of the heat sink By providing a sensor, it is possible to detect the temperature of the heat sink and stop energization of the power control element when the temperature exceeds a predetermined threshold temperature. The table of Can be the surface temperature of the wood is so as not to rise above a predetermined temperature.

  Embodiments of the present invention will be described below with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
FIG. 1 is a configuration diagram of a planar warming tool according to the first embodiment of the present invention.

  In FIG. 1, 1 is a heating element, 2 is a main body containing the heating element 1, 3 is a controller for controlling the temperature of the heating element 1, 4 is an outer case of the controller 3, and a case attached to the main body 2, 5 Is a surface material that covers a part of the upper surface of the case 4, 6 is a power control element that is built in the case 4 and supplies power to the heating element 1, 7 is a control board that mounts and controls the power control element 6, 8 Is partly connected to the power control element 6, and another part is a heat sink attached between the case 4 and the surface material 5 outside the case 4 through the opening of the case 4, and 9 is a heat sink It is a temperature sensor that detects the temperature of the plate 8.

  The operation and action of the planar warming tool configured as described above will be described below.

  First, the temperature sensor 9 detects the temperature of the heat radiating plate 8 that releases heat generated from the power control element 6. The control board 7 compares the temperature detected by the temperature sensor 9 with a predetermined threshold temperature. If the temperature is equal to or lower than the threshold temperature, the power control element 6 is continuously energized. If it is above, electricity supply of the power control element 6 is stopped, and the surface temperature of the surface material 5 on the case 4 can be prevented from rising above a predetermined temperature.

  As described above, in the present embodiment, the heating element 1, the main body 2 including the heating element 1, the controller 3 that controls the temperature of the heating element 1, and the controller 3 are formed. It is equipped with an attached case 4, a surface material 5 that covers a part of the upper surface of the case 4, a power control element 6 that is built in the case 4 and supplies power to the heating element 1, and a power control element 6. A part of the control board 7 to be controlled and the power control element 6 are connected, and another part is attached between the case 4 and the surface material 5 outside the case 4 through the opening of the case 4. By adopting a configuration including the heat radiating plate 8 and the temperature sensor 9 for detecting the temperature of the heat radiating plate 8, the temperature of the heat radiating plate 8 is detected, and power control is performed when the temperature exceeds a predetermined threshold temperature. Since energization of the element 6 can be stopped, the case Can be the surface temperature of the surface material 5 above is that it is not planar Todan tool rises above a predetermined temperature.

  In the present embodiment, the surface material 5 is integrated with the main body 2 and the number of the control boards 7 is one. However, when the surface material 5 and the main body 2 are independent, and the number of the control boards 7 The same applies to the case where is divided into two or more.

  As described above, the surface heating device according to the present invention detects the temperature of the heat sink and stops energization of the power control element when the temperature exceeds a predetermined threshold temperature. Since it is possible to prevent the surface temperature of the surface material from rising above a predetermined temperature, a heat radiating plate is configured to release heat to the outside of the case by providing a part of the surface. It can also be applied to uses such as improving the comfort of other devices having the above.

The block diagram of the planar warming tool of Embodiment 1 of this invention Configuration diagram of a conventional surface heating device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heat generating body 2 Main body 3 Controller 4 Case 5 Surface material 6 Power control element 7 Control board 8 Heat sink 9 Temperature sensor

Claims (1)

A heating element, a main body containing the heating element, a controller for controlling the temperature of the heating element, an outer case of the controller, a case attached to the main body, and a part of an upper surface of the case A surface material, a power control element built in the case, for supplying and controlling power to the heating element, a control board for mounting and controlling the power control element, and a part connected to the power control element; Another part is a surface provided with a heat sink attached between the case and the surface material outside the case through the opening of the case, and a temperature sensor for detecting the temperature of the heat sink Shaped warmer.

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