JPS6331697B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is such that a control circuit for controlling the power supply to the heating element of the main body of the Yagura Kotatsu can be operated wirelessly by an operation section provided on a table board placed on the main body of the Yagura Kotatsu. It's about Gurakotatsu.

Conventional Yagura Kotatsu, for example, Yagura Kotatsu, in which the control circuit that controls the power supply to the heating element of the Yagura Kotatsu body is operated by an operation part provided on a table board placed on the Yagura Kotatsu body, is operated by an operation section provided on the table board. It is constructed by connecting the control circuit that controls the power supply to the heating element of the Yagura Kotatsu main body with a lead wire (cord), so when using the Yagura Kotatsu with a kotatsu futon placed on the Yagura Kotatsu main body. The lead wires were in the way, and the table board could not be placed in any direction because the lead wires were in the way.

The present invention relates to a yagura kotatsu that eliminates the above-mentioned drawbacks.

An embodiment of the tower kotatsu of the present invention will be described below with reference to the drawings.

The Yagura Kotatsu of the present invention is constructed as shown in the drawings. In the drawing, 1 is an operating section provided on a table board 4 placed on the Yagura Kotatsu main body 5, and 2 is an operating section provided on the operating section 1. The variable resistors provided, 3A and 3B are electrode plates provided on the table plate 4, and 6A and 6B are electrode plates provided on the Yagura Kotatsu main body 5, and the floating between the electrode plate 6A and the electrode plate 3A is The capacitance C _A and the stray capacitance C _B between the electrode plate 6B and the electrode plate 3B serve as capacitor components, and the circuit section of the yagura kotatsu main body 5 and the operation section 1 of the table board 4 are connected wirelessly (jointly) as a capacitor. Telephone). 7 is an oscillator, 8 is a resistor, 9 is an amplifier, 10 is a control unit, 1
1 is a heating element (load) controlled by the control section 10.

Next, the operating state of the tower kotatsu of the present invention constructed as described above will be explained.

When the variable resistor 2 of the operating unit 1 is set to a certain value, the signal oscillated by the oscillator 7 is caused by the stray capacitance C _A between the electrode plate 3A and the electrode plate 6A, the variable resistor 2, and the electrode plate 3B. The voltage is divided by the stray capacitance C _B between the electrode plate 6B and the resistor 8. However, since the oscillation frequency of the oscillator 7 is high, the voltage drop due to the capacitance components C _A and C _B is very small and can be ignored.
The output voltage of the oscillator 7 is divided by a variable resistor 2 and a resistor 8, and the potential across the resistor 8 is changed in accordance with the resistance value of the variable resistor 2.
The potential across the resistor 8 is amplified by the amplifier 9 and input to the control section 10.
energization of the heating element 11 is controlled by the potential across the resistor 8, that is, the output voltage of the amplifier 9.

Since the yagura kotatsu of the present invention has the above-described configuration, the kotatsu futon can be placed on the yagura kotatsu body very easily, the table board can be placed in any direction, and the operation is easy. The control circuit can be easily and reliably operated using a variable resistor, and since only the variable resistor that variably operates the control circuit is provided as an operating section on the table board placed on the main body of the Yagura Kotatsu, the operating section on the table board can be easily and reliably operated. The space required for this is extremely small compared to the case where the table board is equipped with a variable resistor, a monostable multivibrator, and a temperature control signal generating means formed by a battery that powers them. There is no need to secure a special space for installing a variable resistor, the variable resistor as an operating unit can be easily installed at a desired position on the table board, and the battery used as a power source for the table board can be eliminated. This eliminates the need for maintenance and inspection of the battery, and since the variable resistor on the table plate and the control circuit of the Yagura Kotatsu body are connected wirelessly via capacitor coupling, temperature control signals for the electric kotatsu table can be generated. The temperature control signal generated by the kotatsu is transmitted to the temperature control signal detection means provided on the frame of the electric kotatsu via a medium consisting of a coil and an iron core. It is less affected by the noise that occurs when controlling the temperature of an electric carpet, and the control circuit of the main body of the Yagura Kotatsu can be controlled by a variable resistor as a more reliable operation part of the table board. The space on the table plate where the electrode plate is provided is also small, and it can be easily provided at a desired position on the table plate.

[Brief explanation of the drawing]

The drawing is a block diagram showing one embodiment of the tower kotatsu of the present invention. In the drawings, 1 is an operating section, 2 is a variable resistor, 4 is a table board, 5 is a kotatsu main body, and 11 is a heating element.

Claims (1)

[Claims] 1 A heating element and a control circuit for controlling the energization of the heating element are provided in the main body of the Yagura Kotatsu, and a variable resistor for variable operation of the control circuit is provided as an operating part on a table board placed on the main body of the Yagura Kotatsu, A tower kotatsu characterized in that the variable resistor of the table board and the control circuit of the tower kotatsu body are wirelessly connected by capacitor coupling.