JPH06229597A - Mode switchover device for ventilator - Google Patents

Abstract

PURPOSE:To provide a simple operation by the use of a simple and inexpensive pull string switch in controlling various elements such as a timer, a lamp and the like. CONSTITUTION:A mode switchover device comprises a pull string switch 2, in which manipulation of a pull string causes a contact having been opened to be opened after making contact for a fixed period of time, time measuring means 3 for measuring a specific period of time from a point of time when the pull string switch 2 is opened, mode judging means 4 for judging whether the pull string switch 2 is again operated within the specific period of time, and drive determining means 6 for determining controlling of a ventilator body 1 and a lamp 5 on the basis of a signal from the mode judging means 4. The ventilator body 1 and the lamp 5 are discriminated from each other and controlled by a manner, in which the pull string switch 2 is operated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mode switching device for a ventilation fan for ventilating a kitchen.

[0002]

2. Description of the Related Art In recent years, with the spread of ventilation fans, there is an increasing demand for a mode switching device having a simple structure that can be controlled together with lighting. Conventionally, this type of ventilation fan mode switching device is generally as shown in FIGS. 4 and 5. That is, the ventilation fan main body 103 has a motor control switch 101 in which “ON” and “OFF” are inverted each time the drawstring is operated and an illumination control switch 102 in which “ON” and “OFF” is inverted each time the drawstring is operated. The motor control switch 101 is connected to the ventilation fan main body 103, and
The lighting control switch 102 is connected to the lighting 104 and controls each of them.

[0003]

When such a conventional ventilation fan is used to control many things such as a timer and lighting, a dedicated switch is added or a rotary having a contact that can also perform other control with one switch. Since switches had to be prepared, the structure was complicated and the cost was high, and the number of combinations of rotary switches was large, which made it difficult to operate.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a ventilation fan mode switching device capable of controlling a large number of switches without increasing the number of switches and using simple and inexpensive switches. It is what

[0005]

In order to achieve the above object, a mode switching device for a ventilating fan according to the present invention includes a drawstring switch that opens a contact after the contact is open for a certain time when the drawstring is operated. A time measuring means for measuring a predetermined time from the time when the drawstring switch is opened, a mode judging means for judging whether the drawstring switch is operated again within a predetermined time of the time measuring means, and a mode judging means. And a drive determining means for determining control of the ventilation fan and control of the illumination by the signal of 1., and a drive circuit for driving the ventilation fan and the illumination by the signal of the drive determining means.

[0006]

With the above-described structure, the present invention can be easily operated with a simple and inexpensive switch even when many controls such as a timer and lighting are performed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

As shown in the figure, a ventilating fan body 1 is attached to the wall surface of the kitchen, and the contact point that has been opened when the drawstring is operated is opened to the ventilating fan body 1 after being contacted for a certain period of time. Switch 2 and this drawstring switch 2
By the time measuring means 3 for measuring a predetermined time from the time when the cord is released, the mode judging means 4 for judging whether the drawstring switch 2 has been operated again within the predetermined time, and the signal of the mode judging means 4. Control of the ventilation fan body 1 and
A drive determining means 6 for determining control of the illumination 5 and a drive circuit 7 for driving the ventilation fan main body 1 and the illumination 5 according to the signal thereof are built in.

The time measuring means 3, the mode determining means 4, and the drive determining means 6 are the microcomputer 8
It is realized in.

The operation of the mode switching device for the ventilation fan having the above structure will be described.
Confirm the input, and if there is no input, repeat step 21 until there is input. Pull string switch 2 in step 21
If the input is confirmed, the process proceeds to step 22, the timer is started, and the process proceeds to step 23. In step 23, the timer started in step 22 is checked, and if the predetermined time (for example, 1 second) has not elapsed, the process proceeds to step 24. In step 24, the input of the drawstring switch 2 is confirmed, and if there is no input, the process returns to step 23. If there is an input from the drawstring switch 2 in step 24,
Proceed to step 25, stop the timer started in step 22, and proceed to step 26. Step 26
Then, it is confirmed whether or not the illumination 5 is on, and if it is off, the process proceeds to step 28, the illumination 5 is turned on, and the process returns to step 21. Then, in step 26, if the illumination 5 is turned on, the process proceeds to step 27, the illumination 5 is turned off, and the process returns to step 21.

If the predetermined time has elapsed in step 23, the process proceeds to step 29, the timer started in step 22 is stopped, and the process proceeds to step 30. In step 30, it is confirmed whether or not the ventilation fan main body 1 is in operation, and if it is in operation, the process proceeds to step 31, the ventilation fan main body 1 is stopped, and the process returns to step 21. In step 30, if the ventilation fan main body 1 is stopped, the process proceeds to step 32, and the ventilation fan main body 1
Drive and return to step 21.

It should be noted that, as an example, the ventilation fan and lighting are turned on.
It is "off", but it goes without saying that it does not matter if the ventilation fan is switched to timer operation.

[0013]

As is apparent from the above embodiments, according to the present invention, after the contact point for operating the drawstring is contacted for a predetermined time, the time for measuring the predetermined time from the time when the drawstring switch is opened is measured. A configuration is provided in which a measuring unit and a drive determining unit that determines the control of the ventilation fan and the lighting based on the signal of the mode determining unit that determines the operation of the drawstring switch are provided, and the ventilation fan and the illumination are distinguished and controlled by the operation method of the drawstring switch. Therefore, it is possible to provide a ventilation fan mode switching device that can be easily operated with a simple and inexpensive switch even when many controls such as a timer and lighting are performed.

[Brief description of drawings]

FIG. 1 is a block diagram of a mode switching device for a ventilation fan according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation program of a mode switching device of the ventilation fan.

FIG. 3 is a timing chart showing the switch operation of the mode switching device of the ventilation fan.

FIG. 4 is a block diagram of a conventional ventilation fan mode switching device.

FIG. 5 is a timing chart showing a switch operation of the mode switching device of the ventilation fan.

[Explanation of symbols]

 1 Ventilation Fan Main Body 2 Drawstring Switch 3 Hours Measuring Means 4 Mode Judging Means 5 Illumination 6 Drive Decision Means 7 Drive Circuit

Claims (1)

[Claims] 1. A drawstring switch which opens when the drawstring is operated after being contacted for a certain period of time,
A time measuring means for measuring a predetermined time from the time when the drawstring switch is opened, a mode determining means for determining whether the drawstring switch has been operated again within the predetermined time, and a signal of the mode determining means, A mode switching device for a ventilation fan, comprising: a drive determining means for determining control of the ventilation fan and control of illumination; and a drive circuit for driving the ventilation fan and the illumination according to a signal from the drive determining means.