JPS5827535A - Temperature control apparatus of warmed toilet seat - 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] The present invention relates to a temperature control device for heating a toilet seat.
The purpose is to save energy.

FIG. 1 shows a circuit diagram of a conventional toilet seat heating temperature control device.

1 is an AC power supply; 2 is a heater that heats the toilet seat; 3 is a semiconductor control element that controls energization of the heater; and 4 is a sensor that detects the temperature of the toilet seat (in this conventional example, a negative temperature-sensitive resistance element is used). ), 5 is a variable resistor that sets the control temperature of the toilet seat. 6 is a resistor, and 7.8 and 9.10 are diodes, which perform full-wave rectification of the voltage of the AC power source 1. 11
is a Zener diode, which clips the full-wave rectified voltage. 12.13 is a resistor, 14 is a transistor, 16 is a capacitor, 16 is a resistor, 17 is a unijunction transistor, 18 is a pulse transformer, 19
is a diode, which charges the capacitor 15 with a current according to the voltage across the sensor 4 and the variable resistor 5;
When the voltage of the capacitor 15 reaches the breakover voltage of the unijunction transistor 17, a voltage is applied to the coil of the pulse transformer 18, turning on the semiconductor control element 3 and energizing the heater 2. be. 2o is a diode that absorbs the back electromotive voltage of the pulse transformer.

In the above configuration, when the temperature of the toilet seat is lower than the set temperature, the resistance value of the sensor 4 is large and the voltage across it is also large. Therefore, the capacitor 16 is rapidly charged, the trigger phase of the semiconductor control element advances, and the amount of current supplied to the heater 2 is increased to raise the toilet seat temperature to the set temperature. If the temperature of the toilet seat is higher than the set temperature, the operation is the opposite to the above, and the amount of electricity supplied to the heater 2 is reduced to lower the toilet seat temperature to the set temperature. In this way, the toilet seat temperature is maintained at the set temperature.

FIG. 2 shows a toilet seat temperature characteristic diagram and a heater energization diagram in the conventional example. 'The horizontal axis shows the elapsed time t, and the vertical axis shows the toilet seat temperature T. Ts is the set temperature, and A1 and A2 indicate the usage period of the toilet seat.

As shown in FIG. 2, the heater 2 is always energized from the time the AC power is turned on to maintain the toilet seat temperature at the set temperature Ts1.

In the above-mentioned conventional configuration, the heater 2 is always energized to maintain the toilet seat temperature at the set temperature even though the toilet seat can be used for only a limited time, resulting in wasted electricity. In order to avoid the above-mentioned waste, a method has been used in which the power plug of the toilet seat is plugged into an outlet only when it is in use, but if you forget to plug it in, the toilet seat will not get warm even after a long time. It was inconvenient to use, such as forgetting to pull out the power plug after use.

The present invention solves the above-mentioned drawbacks of the conventional toilet seat by providing an automatic toilet seat use detection switch that detects the use of the toilet seat and energizing the heater when the automatic toilet seat use detection switch is activated.

FIG. 3 shows a diagram of the state in which the toilet seat is used in one embodiment of the toilet seat heating temperature control device of the present invention.

21 is a human body, 22 is a toilet bowl, 23 is a toilet seat lid, 24 is a toilet seat,
25 is a power plug, 26 is an outlet, and 27 is a toilet seat use automatic detection switch. A heater and an energizing circuit for energizing the heater are built into the toilet seat 24.

For example, when the human body 21 sits on the toilet seat 24, the toilet seat use automatic detection switch 27 detects O
Consists of N microswitches.

FIG. 4 shows a circuit diagram of an embodiment of the toilet seat heating temperature control device of the present invention. The difference from FIG. 1 is that the automatic toilet seat use detection switch 27 is connected in parallel to the series circuit of the sensor 4 and variable resistor 5. In FIG. 4, the toilet seat is not in use, and the toilet seat use automatic detection switch 27
is closed, so transistor 14 is OFF.
However, the heater 2 is not energized. When the user sits on the toilet seat to use the toilet seat, the automatic toilet seat use detection switch 27 is opened, the transistor 14 is turned on, and the heater 2 is energized to raise the toilet seat temperature to the set temperature.

FIG. 5 shows a toilet seat temperature characteristic diagram and a heater energization diagram in the above embodiment. As shown in the diagram, the heater 2 has a usage period of A1.
．． Only A2 is automatically energized to raise and maintain the toilet seat temperature to Ts, but when the toilet seat is not in use, the heater 2 is de-energized to prevent wasteful electricity consumption. In this case, a delay in heating start-up time becomes a problem, but this can be solved by increasing the electric capacity of the heater 2.

1. In the example, a microswitch that is activated by body weight was used as the automatic toilet seat use detection switch, but other activation 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 are also possible. It may also be a switch, and is not limited to this example. In addition, we took as an example automatic temperature control using a closed loop using sensors.
Even in open-loop temperature control without using sensors,
The present invention is effective.

As described above, the toilet seat heating temperature control device according to the present invention is configured to link the energization of the heater that heats the toilet seat with the activation of the automatic toilet seat use detection switch. Automatically shuts off, thus saving energy.

2. The toilet seat is heated automatically, making it easy to use.

It has the following features.

[Brief Description of the Drawings] Fig. 1 is a circuit diagram of a conventional toilet seat heating temperature control device, Fig. 2 is a toilet seat temperature characteristic diagram and heater energization diagram in the above conventional example, and Fig. 3 is a toilet seat heating diagram of the present invention. FIG. 4 is a circuit diagram of the above embodiment, and FIG. 6 is a toilet seat temperature characteristic diagram and a heater energization diagram of the above embodiment. 2... Heater, 3... Semiconductor control element, 4... Sensor, 24... Toilet seat, 27
...Toilet seat use automatic detection switch. Name of agent: Patent attorney Toshio Nakao and one other person JP
H Figure 12 Figure 3 Figure 4 Figure 5 -

Claims (1)

[Scope of Claims] A toilet seat, a heater that heats the toilet seat, and an automatic toilet seat use detection switch that detects use of the toilet seat. A temperature control device for heating a toilet seat, comprising an energizing circuit that energizes the heater when the automatic toilet seat use detection switch is activated.