JPS5975021A - Temperature control apparatus of toilet seat heating - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a temperature control device for heating a toilet seat.

Conventional Structure and Problems Conventional toilet seat heating temperature control devices heat the toilet seat to a constant temperature in advance to eliminate discomfort when starting to use the toilet seat in winter or the like. However, the temperature of the toilet seat at which the human body feels comfortable at the beginning of use is different from the temperature at which the human body feels comfortable during use, and there is a problem that if the toilet seat is set to the optimum temperature at the beginning of use, the user will feel hot during use.

OBJECTS OF THE INVENTION An object of the present invention is to provide a temperature control device for heating a toilet seat that can provide a comfortable sense of warmth to the human body both at the beginning of use and during use.

Structure of the Invention The temperature control device for heating a toilet seat of the present invention includes: a heater for heating the toilet seat; a temperature detection element for detecting the temperature in a room in which the toilet seat is installed; a switch that switches to one side and switches to the other side when in use; and when this switch is switched to one side, the amount of electricity applied to the heater is determined based on the output of the temperature detection element so that the temperature of the toilet seat is optimal at the start of use. and a control circuit that energizes the heater at a preset energization amount so that the amount of heat supplied to the toilet seat is optimal when the switch is switched to the other side while the toilet seat is in use. Yes, it accomplishes the above purpose.

DESCRIPTION OF THE EMBODIMENTS FIG. 1 shows a plan view of a toilet equipped with a temperature control device for heating the toilet seat according to an embodiment of the present invention, FIG. 2 shows a side view of the same, and FIG. 1 shows a circuit diagram of a control device.

In Figure 3, 1 is a thermistor that detects the room temperature, 2 is a variable resistor that adjusts the set temperature, 3 is a controller, 4 is a toilet seat, 5 is a heater that heats the toilet seat 4, 6 is a
is a power plug, 7 is a microswitch that automatically detects when a person sits on the toilet seat 4, and 8 is a toilet bowl.

9 is an AC power supply; 10 is a semiconductor control element for controlling the supply of electricity to the heater 5; 11 and t714 are diodes, which perform full-wave rectification of the voltage of the AC power supply 9.

15 is a Zener diode, which clips the full-wave rectified voltage. 16 and 17 are resistors, 18 is a capacitor, 19 is a transistor, 20 and 21 are resistors, 22 is a unijunction transistor, 23 is a pulse transformer, and 24 is a diode.

When not in use, the microswitch 7 switches to the A side, charges the capacitor 18 with a current corresponding to the voltage across the thermistor 1 and the variable resistor 2, and charges the capacitor 18.
When the voltage of 8 reaches the breakover voltage of the unijunction transistor 22, a voltage is applied to the coil of the pulse transformer 23, and the semiconductor control element 1
0 is made conductive and the heater 5 is energized.

A diode 25 absorbs the back electromotive force of the pulse transformer 23. The micro switch 7 is
When in use, it is switched to the B side, the capacitor 18 is charged with a current corresponding to the voltage across the resistor 16, and when the voltage of the capacitor 18 reaches the breakover voltage of the unijunction transistor 22, the heater 5 is energized in the same way as above. let

In the above configuration, when the toilet seat 4 is not in use, the microswitch 7 is switched to the A side. When the room temperature is lower than the set temperature, the resistance value of the thermistor 1 is large and the voltage across it is also large, so that the capacitor 18 is rapidly charged and the trigger phase of the semiconductor control element 10 advances.
The amount of electricity supplied to the heater 5 is increased to raise the toilet seat temperature to the set temperature. If the room temperature is higher than the set temperature, the amount of electricity supplied to the heater 5 is reduced by the reverse operation to lower the toilet seat temperature to the set temperature. In this way, the surface temperature of the toilet seat 4 is maintained at the set temperature by changing the amount of electricity applied in conjunction with the room temperature.

The temperature at which you feel comfortable the moment you sit down needs to change slightly depending on the room temperature. When sitting in a cold room, I find it more comfortable to sit at a slightly higher temperature. Therefore, temperature correction is performed so that the temperature of the toilet seat 4 becomes slightly lower or higher depending on the level of the room temperature.

On the other hand, when the toilet seat 4 is used, the microswitch 7 is switched to the B side. Since the current flowing through the transistor 19 is determined in advance by the voltage division ratio between the resistor 16 and the resistor 17, the time for charging the capacitor 18 is constant, and therefore the trigger phase of the semiconductor control element 10 is also constant, and the amount of current is also constant. This is because the amount of heat supplied to the toilet seat 4 that makes the human body feel comfortable while sitting is generally constant, but varies greatly depending on the room temperature and individual differences. Therefore, the amount of electricity applied to the heater 5 corresponds to the amount of electricity supplied to the toilet seat 4 in order to keep the surface comfort level of the toilet seat 4 constant during standby and the amount of heat supplied to the toilet seat 4 in order to give a comfortable warm sensation to the human body after sitting down. They are different.

In this way, this embodiment uses a microswitch to control the toilet seat 4.
Detects whether the toilet seat 4 is in use or not, and controls the amount of electricity to the heater 5 so that the temperature of the toilet seat 4 is optimal at the start of use based on the output of the thermistor 1 which detects the room temperature when the toilet seat 4 is not in use, When the toilet seat 4 is in use, the heater 5 is energized at a predetermined amount of electricity so that the heat l supplied to the toilet seat 4 is optimal during use, so that the heater 5 is energized at a predetermined amount of electricity when the toilet seat 4 is in use. The product provides an optimal sense of warmth, and during use, it can supply a constant amount of heat that the human body feels comfortable with, allowing the user to maintain a comfortable feeling.In addition, since unnecessary heating is not performed, energy savings are achieved. be able to.

In addition, although the microswitch 7 is used in the embodiment as the automatic toilet seat use detection switch, other operating methods such as a switch that is activated by changes in the reflection of ultrasonic waves or a switch that is activated by infrared rays emitted from the human body may also be used. However, the present invention is not limited to this example.

Effects of the Invention According to the present invention, it is possible to comfortably heat the toilet seat both at the beginning of use and during use, and it is also possible to save energy.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a toilet bowl equipped with a temperature control device for heating a toilet seat according to an embodiment of the present invention, FIG. 2 is a side view of the same, and FIG.
The figure is a circuit diagram of an embodiment. Engineering: Thermistor, 2: Variable resistor, 4: Toilet seat, 5: Heater, 7: Micro switch, 10
...Semiconductor control element, 16.17...Resistance, 18.
...Capacitor, 19...Transistor, 22...
Unijunction transistor, 23... Pulse transformer Figure 2 Figure 3

Claims (1)

[Claims] a toilet seat, a heater that heats the toilet seat, a temperature detection element that detects the temperature of the room in which the toilet seat is installed, and a switch that switches to one side when the toilet seat is not in use and switches to the other side when in use; When this switch is switched to one side, the amount of electricity supplied to the heater is controlled based on the output of the temperature detection element so that the temperature of the toilet seat is optimal at the start of use, and when the switch is switched to the other side, the A temperature control device for heating a toilet seat, comprising: a control circuit that energizes the heater at a preset amount of energization so that the amount of heat supplied to the toilet seat is optimal while the toilet seat is in use.