JPS598154Y2 - Refrigerator temperature display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a temperature display device for a refrigerator-freezer having multiple doors.

Conventionally, in a refrigerator-freezer having a plurality of doors, as shown in FIGS. 1 and 2, a display means 1 for displaying the temperature of the freezer compartment or refrigerator compartment in a digital or analog format is mounted on the front upper part of the main body 2. A freezer compartment changeover switch 3 and a refrigerator compartment changeover switch 4 are installed in parallel near this, and a freezer compartment indicator light 5 and a refrigerator compartment indicator light 6 are installed above these.
When the freezer compartment selector switch 3 is closed, the freezer compartment indicator light 5 is turned on to indicate that the temperature displayed on the display means 1 is the temperature inside the freezer compartment, and the freezer compartment When the changeover switch 4 is closed, a refrigerating compartment indicator light 6 is turned on to indicate that the temperature displayed on the display means 1 is the temperature inside the refrigerating compartment.

However, with this type of device, in order to know the desired temperature inside the refrigerator, it is necessary to operate either the freezer compartment changeover switch 3 or the refrigerator compartment changeover switch 4, which is not only cumbersome to operate, but also requires a display means. Indicator lights 5 and 6 are required to determine whether the display shown in 1 is the temperature inside the freezer compartment or the temperature inside the refrigerator compartment, which requires a large number of parts and ultimately increases costs. There was a drawback that it occurred.

The present invention has been devised to eliminate the above-mentioned drawbacks and will be explained in detail below with reference to an embodiment shown in the drawings.

11 is a main body having a freezer compartment 12 and a refrigerator compartment 13;
The front openings of the freezer compartment 12 and the refrigerator compartment 13 are provided with doors 14 and 15 for opening and closing, respectively.

Reference numeral 16 and 17 are door switches for controlling the interior lights or the blower fans (none of which are shown) for forcedly circulating cold air provided in the freezer compartment 12 and the refrigerator compartment 13. Or provided in each of the refrigerator compartments 13,
ON and OFF in conjunction with opening/closing operations of doors 14 and 15
The structure is such that

That is, when the door 14 is opened, the door switch 1
6 is turned on, the interior light installed in the freezer compartment 12 lights up, the power to the ventilation fan is cut off, and the door 15 is turned on.
When the door is opened, the door switch 17 is turned on, an internal light provided in the refrigerator compartment 13 is turned on, and power to the blower fan is cut off.

Reference numeral 18 denotes a display means provided on the upper front surface of the main body 11, and in this embodiment, a digital liquid crystal display device is used.

This display means 18 is a temperature sensing element 19 provided in the freezing compartment 12 or a temperature sensing element 20 provided in the refrigerator compartment 13.
The structure is such that the temperature inside the freezer compartment 12 or the refrigerator compartment 13 is displayed through the control circuit 21 in response to a signal from the
The temperature sensing element 19 is connected to the door switch 16 on the freezer compartment 12 side.
Furthermore, another temperature sensing element 20 is connected in series to the door switch 17 on the refrigerator compartment 13 side.

Therefore, the door 14 on the freezer compartment 12 side or the refrigerator compartment 13
When the side door 15 is opened and the door switch 16 or 17 is turned on, a signal from the temperature sensing element 19 or 20 on the side that is turned on is input into the control circuit 11, and the freezing compartment 12 or the refrigerator compartment 13 is The temperature inside the display means 18
is now displayed.

Incidentally, when the temperature inside the refrigerator changes due to opening of the door, the temperature at the time when the door is opened may be stored in a storage device and this may be displayed on the display 18.

As described above, the present invention is designed to display the temperature inside each compartment of a refrigerator-freezer having a plurality of doors using a single display means installed outside the refrigerator, and the temperature can be turned on and off by opening and closing each door. This system is characterized in that only the internal temperature of the side of the refrigerator whose door is opened is displayed on the display means in conjunction with the door switch that opens the door. There is no need to install a changeover switch to change the temperature display or an indicator light to show which temperature inside the refrigerator is currently being displayed, reducing the number of parts and reducing costs, and the operation is as simple as opening the door. This has the remarkable effect of being able to display any temperature inside the refrigerator using one display means.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a refrigerator-freezer equipped with a conventional device, Fig. 2 is an enlarged view of the main parts of Fig. 1, and Fig. 3 is an external perspective view of a refrigerator-freezer equipped with the device of the present invention when the door is opened. , FIG. 4 shows a block circuit diagram of the device of the present invention. 11: Main unit, 12: Freezer compartment, 13: Refrigerator compartment, 14.15
: Door, 16, 17 : Door switch, 18: Display means.

Claims (1)

[Scope of utility model registration request] In a refrigerator-freezer having multiple doors, in which the temperature inside each compartment is displayed by a single display means installed outside the refrigerator, the doors are opened in conjunction with a door switch that is turned ON and OFF by opening and closing each door. A temperature display device for a refrigerator-freezer, characterized in that only the temperature inside the refrigerator is displayed by the display means.