JPH06300253A - Safety device for warm-air heater - Google Patents

Abstract

PURPOSE:To improve handling convenience without spoiling the property of safety during child-lock mode. CONSTITUTION:A safety device is provided with a plurality of switches 3A, 3B, 3C,... for commanding the control of various functions incorporated into instruments, a child-lock switch, prohibiting the commands from the plurality of switches, a fire extinguishing timer means 10, stopping the combustion in the instruments for a given period of time, and an extension switch 11, commanding the extension of combustion time to the fire extinguishing timer means 10. The extension switch 11 is constituted so as to be capable of sending a command to the fire extinguishing timer means 10 even during child-lock mode. Accordingly, the combustion time can be extended as it is without releasing the child-lock mode even when child-lock function is being functioned.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for a hot air heater such as an oil fan heater.

[0002]

2. Description of the Related Art In recent years, with regard to household heating appliances such as oil fan heaters, awareness of usability and safety has increased,
Product improvements have been made.

In particular, an oil fan heater and the like are provided with various timer functions and functions for setting a set temperature, a warming degree, etc., and a switch for operating each function is provided.

Further, recent hot air heaters are equipped with a child lock function, for example, Japanese Patent Application No. 1-50.
As shown in No. 419, when a predetermined switch operation is performed, a child lock is set (this state will be referred to as a child lock mode hereinafter). The child lock mode is configured so that the switch operation for setting various functions does not work unless the child lock mode is released again by a predetermined switch operation.

However, as shown in FIG. 3, a hot-air heater such as an oil fan heater has a switch 51 for continuation within a predetermined time (for example, 3 hours) in order to avoid long-term use without ventilation. Is called an extension switch), the combustion is stopped in 3 hours after the start of combustion. This extension switch 51 also has a switch processing unit 52 that performs a child lock process.
Since it is connected to the control unit 53, the switch operation does not work during the above-mentioned child lock mode.

[0006]

However, in the above-mentioned conventional configuration, from the user's point of view, the combustion time extending function is different from other various functions only in changing the combustion time. It does not affect the condition. Even so, even during the child lock mode, acceptance of an extension switch for instructing extension of the combustion time is also prohibited. Therefore, even if you want to extend the combustion time, you can only extend the combustion time after releasing the child lock mode once,
There was a problem that it was very inconvenient.

The present invention has been made in view of the above circumstances, and is designed to be able to perform the extension processing of the combustion time by accepting the extension switch operation as an exception even in the child lock mode.

[0008]

In order to achieve the above object, the present invention instructs a fire extinguishing timer means for stopping the combustion of a warm air heater at a predetermined time, and an extension of the combustion time measured by the fire extinguishing timer means. An extension switch and a plurality of switches for instructing control of various functions incorporated in the warm air heater are provided, and a child lock switch for prohibiting an instruction by the plurality of switches other than the extension switch is provided. .

[0009]

According to the present invention, the combustion time can be easily extended in the child lock mode without causing any inconvenience caused by mischief of a child or the like.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a block diagram of a control part of an oil warm air fan heater for explaining the present embodiment.
Is an operation switch for starting or stopping the operation of the device, 3A to 3E are switches used for setting respective functions of the device, and the switches 3A and 3B also serve as child lock switches. Reference numeral 4 is a child lock display means such as an LED indicating the child lock mode is in progress, and 5 is a control unit for controlling the operation of the device.

Reference numeral 6 denotes the operation switch 2 and the switches 3A to 3A.
A switch input processing unit for confirming acceptance of 3E and sending an instruction to the control unit 6, and 7 for turning on / off the child lock display means 4.
Child lock display control means 8 for sending an instruction to switch off / blink, 8 confirms that the switches 3A and 3B are simultaneously turned on, and switches the child lock mode "ON / OFF", and child lock display control means 7 And a child lock determining section for sending a child lock instruction to the switch input processing section 6, and a switch input from the switch input processing section 6 when the child lock determining section 8 instructs the child lock mode. It is a child lock display switching means for sending an instruction for switching the lighting display instruction in the child lock display control means 7 to a blinking display when reception information is entered.

Reference numeral 10 is a fire extinguishing timer means for measuring the combustion time in order to stop the combustion at a predetermined time. When the measured combustion time reaches a predetermined time, the control unit 5 is instructed to stop the combustion and the extension switch 11 is also provided. When is turned on, in order to extend the combustion time, the combustion time is newly measured from that time to a predetermined time.

Further, the extension switch 11 does not have to go through the switch input processing section 6 which performs child lock mode processing by the output from the child lock judging section 8,
A signal is sent to the fire extinguishing timer means 10,
Even in the child lock mode, the fire extinguishing timer means 10 can be operated by the instruction. Further, the signal of the extension switch 11 is also input to the child lock display switching means 9, and when the extension switch 11 is pressed, the switches 3A to 3E.
The child lock display means 4 blinks in the same manner as when is pressed.

Next, the operation of the device configured as described above will be described with reference to the flow chart of FIG. When the device is powered on and the control part is started, the device control is started according to the procedure of the control program shown in the flowchart of FIG.

First, in step 21, the child lock determination section 8 simultaneously turns on the switches 3A and 3B.
It is checked whether or not they are turned on. If they are turned on at the same time, the process proceeds to step 22, and if they are not turned on at the same time, the process proceeds to step 23. Similarly, in step 22, the child lock determination unit 8 switches the child lock mode “ON / OFF”.

In step 23, if the child lock mode switched in step 22 is "ON", the process proceeds to step 24, and if "OFF", the process proceeds to step 28 to turn off the display means 4.

In steps 24 and 25, the switch input processing unit 6 determines whether any of the switches 3A to 3E has been operated or the operation switch 2 has been operated. Proceeding to step 26, the display means 4 blinks. If it is not operated, the process proceeds to step 27 and the display means 4 is turned on.

At step 29, the extension switch 11 is turned on.
Whether or not it is turned on, the process proceeds to step 30, and if not turned on, the process returns to step 21.
In step 30, the fire extinguishing timer means newly measures a predetermined time in order to extend the combustion time.

In step 31, it is confirmed whether or not the child lock mode is in effect. If the child lock mode is not in effect, the display means 4 is turned off in step 32, and if in the child lock mode, the display means 4 is in effect in step 33.
Blink to inform the user of that fact.

The above steps 21 to 33 are repeated to perform control. As described above, according to this configuration, even in the child lock mode, the extension switch can perform the acceptance process independently of the other switches regardless of the child mode.

The above embodiment is shown as an example of the present invention, and may have any structure as long as the objects and effects of the present invention are achieved. For example, a microcomputer is used as the control means. However, even if you do not use a microcomputer,
It may have a circuit configuration capable of performing similar control.

Further, although LEDs are used as the display means, it is shown that the user is in the child lock mode, and if there is a switch operation, it is possible to make it more exaggerated. May be displayed or an alarm may be given by a buzzer.

[0023]

As is apparent from the description of the embodiment, the present invention can be easily performed without impairing the safety of the child lock function which is a safety device of the apparatus and without performing the child lock mode release processing. The burning time can be extended and the usability can be improved.

[Brief description of drawings]

FIG. 1 is a block diagram of a safety device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the same embodiment.

FIG. 3 is a block diagram of a conventional safety device.

[Explanation of symbols]

 3A switch (child lock switch) 3B switch (child lock switch) 3C switch 3D switch 3E switch 4 child lock display means 5 control unit 6 switch input processing unit 7 child lock display control unit 8 child lock determination unit 9 child lock display switching unit 10 Fire extinguishing timer means 11 Extension switch

Claims (2)

[Claims] 1. A fire extinguishing timer means for stopping the combustion of the warm air heater at a predetermined time, an extension switch for instructing extension of the combustion time measured by the fire extinguishing timer means, and various functions incorporated in the hot air heater. A safety device for a hot air heater, comprising: a plurality of switches for instructing the control of 1. and a child lock switch for prohibiting an instruction by the plurality of switches other than the extension switch. 2. The warm air heating system according to claim 1, further comprising a child lock display means for displaying that the child lock mode is in operation when a plurality of switches instructing control of various functions are pressed in the child lock mode. Machine safety device.