JPH04110305U - electric heater - Google Patents

Abstract

(57) [Summary] [Purpose] The electric heater of the present invention determines that the lighting equipment has been turned off when the light detection unit installed in the control box detects light for a predetermined period of time, and turns off the power to the heating element. By shutting off the heating element, the purpose is to prevent unnecessary interruption of electricity to the heating element and to ensure that the user forgets to turn off the heater only when the user is absent. [Structure] A heating element 1 is provided in the main body of the kotatsu, and a control box 4 equipped with a control circuit 3 is provided to the heating element 1 via a cord. The control circuit 3 connects the heating element 1 and the relay contact 8a to the power source 5, connects the CdS cell 10 to the power source 5, connects the timer 12 to the CdS cell 10, and connects the timer 12 to the power source 5.
Transistor 13 is connected to the output terminal of transistor 1.
3 is connected to a relay coil 8b.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention has a heating element installed in the main body of the heater, and a control circuit that controls the power supply to the heating element. This invention relates to an electric heater equipped with a control box equipped with a control box.

0002

[Conventional technology]

Conventional electric heaters have a heating element in the heater body, and control the supply of electricity to this heating element. A control box is provided with a control circuit to A light-receiving element is provided, and when the light-receiving element stops receiving light, electricity to the heating element is cut off. The above control circuit was provided.

0003

[Problem that the idea aims to solve]

The electric heater with the above configuration can be used with the lighting equipment in the room turned on and the cushion or user When the light-receiving area is covered by Electricity is frequently cut off to the body, making it difficult to control the heating temperature of the heater to the desired heating temperature. The actual heating temperature becomes lower than the desired heating temperature. There was a problem.

0004 The electric heater of the present invention was developed in view of the above problems, and has a When the light detection section installed in the light box detects light for a predetermined period of time, the illumination By cutting off power to the heating element when the appliance is turned off, unnecessary heating elements can be removed. The purpose is to prevent people from forgetting to turn off the heater by preventing power to the heater from being cut off. Ru.

[0005]

[Means to solve the problem]

In order to achieve the above purpose, the electric heater of the present invention has a heating element installed in the heater body. Therefore, a control box equipped with a control circuit that controls the power supply to this heating element is installed. hair, A light detection section is installed in the control box above, A timer is provided to measure when the light detection section stops detecting light, If the light detection section does not continuously detect light while the timer measures a predetermined time, the above occurs. The above-mentioned control circuit is provided to cut off power supply to the heating element.

[0006]

[Function] The electric heater with the above configuration will shut down when the light detection section stops detecting light. The light detector continues to detect light while the timer measures the predetermined time. If you do not turn off the lights in your room, the control circuit will cause the user to turn off the lights in the room, and remove electricity from going out or sleeping. Prevents forgetting to turn off the heater.

[0007]

【Example】

An example of the electric heater of the present invention is shown in a yagura kotatsu together with Figures 1 and 2. explain. The Yagura Kotatsu of the present invention is provided with a heating element 1 in the Yagura Kotatsu main body (not shown), The heating element 1 is equipped with a control circuit 3 that controls energization to the heating element 1 via a cord 2. A controlled control box 4 is provided. The control circuit 3 of this control box 4 includes a power supply 5, a power switch 6, and a server. Mostat 7, heating element 1, and relay contact 8a are connected in series, and DC stabilization is applied to the power supply 5. power source 9 is connected.

[0008] Then, a CdS cell 10 and a variable resistor 11 as a photodetector are connected to the DC stabilized power supply 9. Connect the timer 12 to the connection point between the CdS cell 10 and the variable resistor 11, and A transistor 13 is connected to the output terminal of the timer 12, and a relay is connected to the transistor 13. Coil 8b is connected.

[0009] The operation of the tower kotatsu with the above configuration will be explained. First, the power switch 6 is turned on to energize the heating element 1 to perform heating. When the user turns off the lighting equipment in the room by going out or going to bed, the CdS cell 10 is no longer exposed to light, the resistance value of the CdS cell 10 changes, and the timer 12 When the signal is input, the timer 12 starts counting time.

0010 While this timer 12 measures a predetermined time (for example, 5 minutes), the CdS cell 1 When no light is applied to the timer 12, the output of the timer 12 stops and the transistor 13 turns on. The relay coil 8b is then deenergized, the relay contact 8a is turned off, and the heating element is turned off. To prevent forgetting to turn off the power by cutting off the power to the In addition, the CdS cell 10 of the control box 4 can be used as a kotatsu futon or cushion. When the CdS cell 10 is covered with light, the timer 12 starts measuring time. Even if the control box 4 is turned off by the user before the predetermined time elapses, I noticed that it was covered with a futon, etc., and when I removed the kotatsu futon, etc., timer 12 started. The time measurement is interrupted, and the output to the transistor 13 is continued, and the heating element 1 is energized. Do it without interruption.

[0011]

[Effect of the idea]

Since the electric heater of the present invention has the above-mentioned configuration, it can be used frequently while the user is in the room. Prevents electricity from being cut off to the heating element, ensuring that users do not forget to turn off the heater only when the user is not in the seat. to prevent.

[Brief explanation of drawings]

FIG. 1 is an electric circuit diagram showing a control circuit of an embodiment of an electric heater of the present invention.

FIG. 2 is a schematic plan view showing a control box of an embodiment of the electric heater of the present invention.

[Explanation of symbols]

1 Heating element 3 Control circuit 4 Control box 10 CdS cell 12 Timer

Claims (1)

[Scope of utility model registration request] 1. An electric heater in which a heating element is provided in the main body of the heater, and a control box is provided with a control circuit for controlling energization of the heating element, wherein the control box is provided with a light detection section, and the control box is provided with a light detection section, The control circuit is provided with a timer that measures when the detection section stops detecting light, and cuts off the power to the heating element if the light detection section does not continuously detect light while the timer measures a predetermined time. An electric heater characterized by being provided with.