JP2568246B2 - Plug adapter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention intervenes between a plug of an electric product such as a ventilation fan and an outlet in a home, and automatically operates in accordance with temperature and humidity. It relates to a plug adapter for controlling.

[Conventional technology]

Conventionally, for example, a ventilation fan for home use has a plug inserted in an outlet, and is manually turned on when cooking or the like and manually turned off again when unnecessary.

[Problems to be Solved by the Invention]

In the case of the above-mentioned conventional technology, the switch has to be turned on manually each time, so forget to turn on the switch when cooking, or if you cook without having to put it in trouble, steam fills the kitchen with smoke, and a bad smell There was a case that oil and smoke were attached.

It is also possible to incorporate a sensor inside the electric product such as a ventilation fan to automatically control the electric product according to temperature and humidity, but in this case, it cannot be used for existing products and the ventilation fan should be replaced. However, there is a problem that the burden is heavy for the user.

The present invention has been made in view of the above-mentioned problems of the conventional technology, and provides a plug adapter that can automatically control electric products according to temperature and humidity, is inexpensive, and is easy to handle. The purpose is to do.

[Means for solving the problem]

According to the invention, a plug and a socket are provided on a side surface of a case, and a through hole is formed on an outer surface of the case. At least one of a temperature sensor and a humidity sensor is printed at a position communicating with the through hole. A plug adapter in which the formed substrate is fixed and a relay is operated by the output of a comparator that compares the output of a sensor formed on the substrate with a predetermined reference value, and the relay connects the plug and the contact of the socket. A plug portion having a plug on one side surface may be swingably provided with respect to the case, or the through holes may be provided so as to be biased to one side of the case.

[Action]

The plug adapter of the present invention controls power supply to an electric product having a plug inserted in a socket according to temperature and humidity.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

1 to 4 show a first embodiment of the present invention. In the plug adapter of this embodiment, a plug 2 is projectingly provided on an upper and lower case 1 made of synthetic resin, and further, a case 1 The socket 3 is formed on the other side surface. Case 1
Inside the socket, a spring member 4a forming the contact 4 of the socket 3 is formed.
Are provided corresponding to the respective holes of the socket 3. The plug 2 and the contact 4 are connected to the terminal portion of the board 5 in the case 1, and the thermistor 6 which is a temperature sensor, the control IC 7 and other circuit elements (not shown) are attached to the front surface of the board 5, and the back surface thereof. The humidity sensor 8 is formed by printing the electrode 8a in a comb shape. Further, a through hole 9 is formed on the outer surface of the case 1 so that air inside and outside the case 1 can flow.

The control circuit of this plug adapter will be described with reference to FIG.

The plug 2 is connected to the transformer 10, and the transformer 2
The secondary output is connected to the rectifier circuit 11 and the power supply circuit 12, and the output of the power supply circuit 12 is connected to each IC and electronic element.
Further, the output of the predetermined voltage of the power supply circuit 12 is the thermistor 6
And the potential of the thermistor 6 is connected to the non-inverting input of the comparator 13. Further, a predetermined reference voltage is input to the inverting input section of the comparator 13. And this comparator
The output of 13 is input to the base of the transistor 14. A relay 15 is connected to the collector side of the transistor 14, and a contact 15a of the relay 15 is provided in series between the plug 2 and the contact 4 of the socket 3.

Further, in the circuit including the humidity sensor 8, the output of the oscillation circuit 16 is connected to the buffer 17, and the output of the buffer 17 is adjusted to a predetermined potential and input to the humidity sensor 8.
The humidity sensor 8 is connected to a thermistor 18 for temperature compensation in series with the humidity sensor 8, and the potential of the humidity sensor 8 is connected to an amplifier 19 and a rectifying / smoothing circuit 20. The voltage is input to the non-inverting input section of the comparator 21. Further, a predetermined reference voltage is input to the inverting input section of the comparator 21. And the comparator 21
The output of is input to the base of the transistor 14.

When the plug adapter of this embodiment is used for a ventilation fan, for example, the plug of the ventilation fan is inserted into the socket 3 of this plug adapter, and the plug 2 of the plug adapter is inserted into a household outlet. Then, when the ventilation fan is switched on and cooking is performed under the ventilation fan, the potential of the thermistor 6 and the humidity sensor 8 of the plug adapter changes due to the heat or steam generated by the heating and the comparison is made when the predetermined reference value is exceeded. The output of the device 13 or 19 changes from LOW to HIGH, and the transistor 14 turns on. This activates relay 15 to activate contact 15
Socket 3 with a closed fan vent plug
The power from the commercial power supply is supplied to the contact 4 of the. here,
Since the outputs of the comparators 13 and 19 are input to the base of the transistor 14 in the form of OR, the ventilation fan operates when either the temperature or the humidity exceeds a predetermined value.

According to the plug adapter of this embodiment, by simply leaving the ventilation fan switched on, it automatically detects heat and humidity and activates or deactivates the ventilation fan. Disappears.

Next, a second embodiment of the plug adapter of the present invention will be described with reference to FIGS. 5 and 6. Here, the same members as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

In this embodiment, a plug portion 25 having a plug 2 on one side surface of the case 1 is provided so as to be swingable with respect to the case 1 about a swing shaft 26. Further, the socket 3 is formed on a plurality of other side surfaces of the case 1, slit-shaped through holes 9 are provided on a part of the side surfaces, and the LED or L
A display unit 27 such as a CD is provided.

As shown in FIG. 6, a substrate 5 is housed inside the plug adapter of this embodiment, and a thermistor 6, a control IC 7, a humidity sensor 8 and other electronic elements such as resistors and capacitors are mounted on the surface thereof. There is. This board 5
Is connected to the base end of the plug 2 by a flexible lead wire 28 so that no force is applied to the connection terminal even when the case 1 swings. Further, a spring member 4a of a contact 4 is attached to the inside of the socket 3 (contacts on both side surfaces in the figure are omitted) and is connected to a circuit on the substrate 5.

The control circuit of this embodiment is also the same as that of FIG. 4, except that the number of sockets is 3, and the LC of the display unit 27 is
A drive IC (not shown) for driving D and the like is further provided.

This plug adapter digitizes the outputs of the thermistor 6 and the humidity sensor 8 and displays them on the display unit 27, and also controls the power supply to the plug inserted in the socket 3 according to a predetermined temperature or humidity, and turns on the ventilation fan or the like. , OFF
To do.

According to this plug adapter, the temperature and humidity can be displayed on the display unit 27.
Is convenient for the user, and since the case 1 can be swung with respect to the plug 2, the display unit 27 can be adjusted to an angle that is easy to see. Moreover, since a plurality of sockets 3 are provided, it is possible to simultaneously control a plurality of electric products by temperature or humidity. In this case, it is also possible to separately provide comparators and independently set reference values for supplying power to the respective sockets.

Note that either the humidity sensor or the temperature sensor may be formed on the substrate by printing, or may be separately attached to the substrate.

〔The invention's effect〕

Since the plug adapter of the present invention controls the power supply to the contacts of the socket by the sensor provided in the case, the plug adapter is plugged into a household outlet and a plug such as a ventilation fan is inserted into the socket of the plug adapter. The automatic control of the ventilation fan by the temperature etc. is possible by simply plugging it in, and it can also be used by simply plugging this plug adapter into an outlet for existing electric products. In addition, by incorporating the sensor in the case, it has the effect of preventing the sensor cable from breaking due to physical load and the sensor itself from being destroyed, and because the sensor is printed and formed on the substrate fixed inside the case, The angle at which sunlight can enter the inside of the main body case from the through hole having a size is reduced, and direct sunlight to the sensor can be avoided.

Further, if the plug portion is swingably provided to the main body case as described in claim 2, by inserting the plug portion into the plug insertion opening and then bending the plug portion downward, the main body case is brought into close contact with the wall surface. The amount of protrusion from the wall surface is reduced, and as a result, the moment of the force that attempts to drop the plug adapter is reduced, making it difficult to drop it. In addition, by making the case swingable with respect to the plug portion, the orientation of the socket, the display portion, and the through hole can be easily changed, so that the range of application is extremely wide.

In addition, in the plug adapter according to the third and fourth aspects, the through hole is provided on one side of the main body case, so that the through hole is inserted in a state where the through hole is away from the direct sunlight, and the direct sunlight of the sensor is avoided. Can

[Brief description of drawings]

FIG. 1 is a plan view of the plug adapter according to the first embodiment of the present invention with the upper case removed, FIG. 2 is a perspective view of a substrate provided inside the plug adapter of this embodiment, and FIG. FIG. 4 is a perspective view of the plug adapter of FIG. 4, FIG. 4 is a circuit diagram of a control circuit of this embodiment, FIG. 5 is a perspective view of a second embodiment of the plug adapter of the present invention, and FIG. 6 is a plug adapter of this embodiment. It is a top view which removed the upper case. 1 ... Case, 2 ... Plug, 3 ... Socket, 4 ...
Contact points, 5 ... Board, 6 ... Thermistor (temperature sensor), 8 ... Humidity sensor, 9 ... Through hole, 13,21 ... Comparator, 15 ... Relay

Front page continuation (72) Inventor Yoshihiro Furukawa 3158 Shimookubo, Osawano-cho, Kamishinkawa-gun, Toyama Prefecture Hokuriku Electric Industry Co., Ltd. (72) Inventor Kiyotaka Mizuoka 3158 Shimookubo, Osawano-cho, Toyama Prefecture Hokuriku Electric Industrial Co., Ltd. (72) Inventor Toyoji Asano 3158 Shimookubo, Osawano-cho, Kamishinagawa-gun, Toyama Prefecture Hokuriku Electric Industry Co., Ltd. (72) Inventor Kazuo Nomura 3158 Shimookubo, Osawano-cho, Kamishinagawa-gun, Toyama Prefecture Hokuriku Electric Industry Co., Ltd. (72) Inventor Shigeru Bando 3158 Shimo-Okubo Osawano-cho, Kamishinagawa-gun, Toyama Prefecture Hokuriku Electric Industry Co., Ltd. (72) Kenji Miyao 3158 Shimo-Okubo, Osawano-cho, Kamishinagawa-gun, Toyama Prefecture Hokuriku Electric Industry Co., Ltd. 72) Inventor Go Nakata 3158 Shimookubo, Osawano-cho, Kamishinagawa-gun, Toyama Prefecture Hokuriku Electric Industry Co., Ltd. (72) Inventor Yozo 3158 Shimookubo, Osawano-cho, Kamishinkawa-gun, Toyama Prefecture Hokuriku Electric Industry Co., Ltd. (56) References Akira 63-3137 (JP, A) JP Akira 52-92378 (JP, A) JitsuHiraku Akira 63-74038 (JP, U)

Claims (4)

(57) [Claims] 1. A plug adapter having a socket provided on a side surface of a case and a plug projectingly provided on another side surface of the case, the plug being insertable into a commercial power outlet in a household. Form a through hole in the case,
A substrate on which at least one of a temperature sensor and a humidity sensor is formed by printing is fixed at a predetermined position in the case where the outside air flows through the through hole, and the output of the sensor is compared with a predetermined reference value. A plug adapter incorporating a comparator and a board on which a relay that is controlled by an output of the comparator and opens and closes a contact between the plug and the socket is mounted. 2. A plug adapter having a socket provided on a side surface of a case and a plug protrudingly provided on the other side surface of the case, the plug being insertable into a commercial power outlet in a home. Form a through hole in the case,
A substrate on which at least one of a temperature sensor and a humidity sensor is formed by printing is fixed at a predetermined position in the case where the outside air flows through the through hole, and the output of the sensor is compared with a predetermined reference value. A board on which a comparator and a relay controlled by the output of the comparator to open and close the contact between the plug and the socket are mounted is built-in, and a plug portion having a plug on one side is swingably provided with respect to the case. Plug adapter characterized by 3. The plug adapter according to claim 1 or 2, wherein the through hole is provided in the case so as to be close to one end in a direction in which a pair of terminals forming the plug are arranged. 4. The plug adapter according to claim 1, wherein the through hole is provided only on one surface of the case.