KR20130027987A - Refrigerator - Google Patents

Abstract

PURPOSE: A refrigerator equipped with a display unit is provided to easily set up the threshold value of an 'ON' determination by increasing the amount of change for an electrostatic capacity which is expanded by an electrode area using both sides of a substrate as the electrode area. CONSTITUTION: A refrigerator comprises a main control unit and a sub-controller(68). The main controller controls a blower blowing the cool air inside of the refrigerator and a compressor comprising a refrigeration cycle. The sub-controller is arranged on the door surface of the front side comprises an input unit having an electrostatic touch sensor and a display unit(56) indicating a manipulating result from multiple switch electrodes of the electrostatic touch sensor. At least one from the multiple switch electrodes has an electrode on the front side and the rear side of the substrate installed with the switch electrodes and the switches on the front and the rear side are electrically connected.

Description

Refrigerator {REFRIGERATOR}

TECHNICAL FIELD This invention relates to a refrigerator. Specifically, It is related with the refrigerator provided with the display means which displays the operation content from a touch sensor.

Patent Literature 1 and Patent Literature 2 describe examples of a refrigerator provided with a conventional touch sensor. In the refrigerator of patent document 1, in order to arrange | position a board | substrate to a limited installation space efficiently and to prevent misoperation, a plurality of capacitive-type operation switches are arrange | positioned and it is L around the operation switch located in both ends. A magnet-shaped misoperation prevention electrode is arrange | positioned.

Moreover, in the refrigerator of patent document 2, the operation state corresponding to the actual use situation is displayed and the operability is improved. Specifically, the operation result of the capacitive operation switch is displayed on the display unit, and the LED unit illuminates the display unit. And if an operation switch is operated and illumination is not lighted and the door of a storage chamber is open, operation of an operation switch is invalidated.

Patent Document 3 describes another example of a refrigerator provided with a conventional touch sensor. In the refrigerator described in this publication, a capacitive switch is used as a control switch of a display panel portion, and the switch is disposed between a display device such as a liquid crystal panel and a display panel covering the upper surface of the display device. This prevents water from entering the switch unit and removes restrictions on the installation location of the panel.

Patent Document 4 describes an example of a home appliance using a conventional touch sensor. In the induction heating cooker described in this publication, a dummy key is disposed adjacent to the off / start key so that the induction heating cooker does not malfunction even if the touch sensor is accidentally touched during mopping or the like. If the dummy key and the off / start key are operated at the same time during heating, the heating is not stopped.

Japanese Patent Application Laid-Open No. 2011-58696 Japanese Patent Application Laid-Open No. 2011-58662 Japanese Patent Application Laid-Open No. 2007-298242 JP 2009-93849 A

With high functionality of the refrigerator, it is possible to frequently adjust the temperature of each part of the refrigerator. For this reason, attempts have been made to provide display means or adjustment means for displaying the adjustment contents in the front door of the refrigerator, making the refrigerator user easy to operate. In the refrigerators described in Patent Documents 1 and 2 above, a plurality of touch sensors are arranged in a horizontal line on the front door of the large-sized refrigerator from this viewpoint, thereby preventing malfunction and improving operability.

By the way, in a capacitive touch sensor, an electrode detects a contact by the change of the capacitance of the switch detection electrode (switch electrode). The capacitance of the switch electrode changes when the switch electrode contacts, but in addition, the capacitance of the switch electrode may change due to environmental changes such as noise or temperature changes from the outside even when the switch electrode does not contact. Therefore, when the capacitance changes due to this unintended phenomenon, a threshold value is provided so that the switch does not determine ON. In general, since the amount of change in capacitance due to environmental changes is small and the amount of change in capacitance due to contact is large, it is preferable that a threshold value can be set large to prevent malfunction.

However, even when switching by the same contact, the amount of change in capacitance varies depending on the size of the switch electrode. If the area of the switch electrode is small and the capacity of the pattern is small, the amount of change in capacitance becomes small even in intentional contact, making it difficult to distinguish it from those caused by environmental changes. On the other hand, in order to facilitate setting the threshold value, the switch electrode may be made larger. However, when the switch electrode is enlarged, the board area must be enlarged. do. Moreover, in the refrigerator, the arrangement position of the main control board | substrate and the switching control board | substrate differs, and in order to communicate between these two board | substrates, a switching board must mount a communication circuit, and the area of a switch electrode It can not be reduced.

In addition, when the number of switches is increased in order to adjust the high internal temperature with higher accuracy, the area of the switch electrodes is forced to be lowered further. That is, when sufficient board | substrate area cannot be secured and only a part of a plurality of switch electrodes are changed and coped with, the setting of the threshold for distinguishing from a disturbance becomes difficult.

In the refrigerator of the said patent document 1, although miniaturization of a board | substrate is considered, it is still inadequate, and in the refrigerator of patent documents 2 and 3, the limitation of the area of such a switch electrode is not fully considered. Moreover, in the electromagnetic cooker of patent document 4, there is a margin in a front operation part, and it does not consider until the area of a switch electrode.

This invention is made | formed in view of the said trouble of the said prior art, The objective is to ensure wider electrode area even if the area of the switch electrode in the contact surface of a touch sensor becomes small in the refrigerator which has a touch sensor, The amount of change in capacitance at the time of non-contact and at the time of contact is made large, and setting of a threshold value is made easy.

Features of the present invention for achieving the above object, the main control unit for controlling the compressor constituting the blower and the refrigeration cycle for blowing cold air in the interior, the input unit disposed on the front door surface and having a capacitive touch sensor and In the refrigerator having a sub-control unit having a display unit for displaying the operation results from the plurality of switch electrodes of the touch sensor, and communicates between the main control unit and the sub-control unit, at least any of the plurality of switch electrodes One is that the electrode is provided on the front side and the back side of the substrate on which the switch electrode is provided, and the switch electrode on the front side and the switch electrode on the back side are electrically connected.

Further, the switch electrode on the front side electrically connected to the switch electrode on the rear side of the plurality of switch electrodes is characterized in that it is narrower than the area of the switch electrode on the other front side without the switch electrode on the rear side. .

Further, display means for displaying the operation contents of the plurality of switch electrodes is provided, and both ends of the plurality of switch electrodes connected to the touch sensor are for preventing misoperation, and at least one electrode of the switch electrodes disposed at both ends thereof. It is provided in the front side and the back side of this said board | substrate, It is characterized by the above-mentioned.

Moreover, the said front door is a pair of rotary type, and the said sub control part is arrange | positioned in the width direction length shorter side among the said front doors, It is characterized by the above-mentioned.

In addition, a hinge portion for rotatably holding the front door is provided at an upper end of the refrigerator, a hole is formed in the upper portion of the front door to insert the hinge portion, and the main controller and the sub-control unit communicate with each other through the hinge portion. Characterized in that.

Moreover, the switch area of the said back side is provided in the projection range of the switch electrode of the front side, and an electrode area is enlarged.

According to the present invention, in the refrigerator having a touch sensor, even if the area of the switch electrode on the contact surface of the substrate on which the touch sensor is mounted is restricted, the electrode area is used by using both front and rear surfaces of the substrate as electrode surfaces. Since the amount of change in capacitance increases, the threshold value for ON determination can be easily set.

1 is a front view and a cross-sectional side view of an embodiment of a refrigerator according to the present invention.
2 is a partially exploded perspective view of the refrigerator shown in FIG. 1.
FIG. 3 is a detailed sectional view of the operation and display unit mounted in the refrigerator shown in FIG. 1. FIG.
4 is an exploded perspective view of the operation and display unit illustrated in FIG. 3.
5 is a front view and a rear view of the substrate section provided with the operation and display section shown in FIG. 4.
6 is a block diagram of a main controller and a sub-control unit disposed in the refrigerator.

Hereinafter, an embodiment of a refrigerator according to the present invention will be described with reference to the drawings. 1: is a figure of the refrigerator main body 100, FIG. 1 (a) is a front view, FIG. 1 (b) is a cross-sectional side view. The refrigerator 100 of this embodiment is a refrigerator with a relatively large capacity, and the refrigerating chamber 22 is covered by two left and right doors (left refrigerating chamber door 22a and right refrigerating chamber door 22b). Each door (left refrigerating chamber door 22a, right refrigerating chamber door 22b) is a French type door which can be rotated about the width direction edge part.

The refrigerator 100 according to the present embodiment has a plurality of storage chambers, and a refrigerating chamber 22 is formed at the top of the refrigerator, an ice making chamber 23 is formed at the left side of the refrigerating chamber, and an upper freezing chamber 24 is formed at the right side. It is. Directly below the ice making chamber 23 and the upper freezing chamber 24, a lower freezing chamber 25 is directly below the lower freezing chamber 25, and a vegetable chamber 26 is formed at the bottom of the refrigerator 100.

Each storage compartment is hermetically covered by a door and a packing 11 attached thereto. As described above, the refrigerating compartment 22 located at the top is covered by the left refrigerating compartment door 22a and the right refrigerating compartment door 22b which are narrowly formed, and these two doors (left refrigerating compartment door 22a, right refrigerating compartment) The door 22b is rotatably supported by the hinge 3 (left hinge 3a, right hinge 3b), etc. provided in the upper part of the refrigerator main body 100, etc. That is, the French door is constituted by the left-right opening type. Opening / closing of both doors (left refrigerating chamber door 22a and right refrigerating chamber door 22b) is detected by the refrigerating chamber door opening / closing detection means 22c disposed near the upper end near the shaft support.

The ice-making chamber 23 and the upper freezing chamber 24 arrange | positioned at the left and right are hermetically covered by the ice-making chamber door 23a and the upper-freezing chamber door 24a which are drawer-type doors, respectively. The opening and closing of these ice making room doors 23a and the upper freezing compartment door 24a are detected by the ice making room door opening and closing detecting means 23b and the upper freezing compartment door opening and closing detecting means 24b which are arranged in close proximity to each other.

The lower freezer compartment 25 is also hermetically covered by the lower freezer compartment door 25a, which is a drawer type door, and its opening and closing is detected by the lower freezer compartment door opening / closing detecting means 25b. The vegetable chamber 26 arrange | positioned at the bottom is also covered by the vegetable chamber door 26a which is a drawer type | mold door, and opening / closing of this vegetable chamber door 26a is detected by the vegetable chamber door opening / closing detection means 26b. Lower freezer compartment door open / close detection means 25b and vegetable compartment door open / close detection means 26b are each width direction intermediate part, and are arrange | positioned at the upper part.

Here, the operation | movement display part 50 mentioned later is provided in the up-down direction middle part of the left refrigerator compartment door 22a which covers the refrigerator compartment 22. As shown in FIG. Installing the operation / display unit 50 on the left side refrigerator compartment door 22a standardizes the left side refrigerator compartment door 22a, and the right side refrigerator compartment when the model of the inside of the refrigerator main body 100 differs. This is for changing and using the width direction length of the door 22b. In addition, since the length of the left refrigerating compartment door 22a is short in the left-right direction, in order to reduce that the heat insulation area of the refrigerator door is reduced by providing this operation / display section 50, thereby reducing the heat insulation performance. It is also.

The side view of the refrigerator main body 100 is shown by partial cross-sectional state in FIG.1 (b). The refrigerator main body 100 forms a storage chamber by the heat insulation box 19 formed by filling a heat insulating material between the outer side box 21 and the inner side box 20. The outer side box 21 has the top plate 21a in the ceiling part, and the back plate 21b in the back side. The storage compartment is partitioned in the up and down direction by the partition members 12 to 14 provided in a plurality of stages in the up and down direction, and in this embodiment in three stages, and the refrigerating chamber 22, the ice making chamber 23, or the upper end in order from the top. The freezing chamber 24, the lower freezing chamber 25, and the vegetable chamber 26 are formed. In order to supply cold air to each of these storage chambers, the cooling channel | path 18 is formed in the inner part of the inside of the high | heat insulation box 19 inside. In this cooling passage 18, a blower 27 and a cooler 28 are disposed in addition to a damper (not shown) for changing a cold air supply destination. In the lower part of the back side of the refrigerator main body 100, the compressor 30 and the condenser 31 which comprise the refrigeration cycle which generate cold air are arrange | positioned.

An in-room lamp 45 is attached to the ceiling surface of the refrigerator main body 100, and that the refrigerating chamber door (left refrigerating chamber door 22a, right refrigerating chamber door 22b) is opened. Lights up when 22c is detected. The recessed part 40 is formed in the upper side of the heat insulation box 19, and the rear part side of the refrigerator main body 100, and the main control part 41 is arrange | positioned. The outer side of the main control part 41 is covered by the cover 42. The main control part 41 controls the compressor 30 etc. which form a refrigeration cycle.

2, the ceiling part of the refrigerator main body 100 is shown in exploded perspective view. Hinge 3 (left hinge 3a, right hinge 3b) is provided in the ceiling left and right front ends of the refrigerator main body 100, and the cylindrical projection 15a is provided in the lower end side of the hinge 3 at the front-end | tip side. ) Extends downward. Although only the left refrigerator compartment door 22a is shown in FIG. 2, the right refrigerator compartment door 22b is also caught by the right hinge 3b. On the right end side of the left refrigerating compartment door 22a, a sealing means 16 incorporating a heater (not shown) is attached. Electric power is supplied to a heater through the lead wire 41a shown below.

As shown in FIG. 2, the hole 15b is formed in the width direction edge part of the left refrigerating chamber door 22a, and the cylindrical protrusion 15a of the left hinge 3a is fitted in this hole 15b, The left refrigerating compartment door 22a is made rotatable. In the hole 15b, the main controller 41 and the operation / display unit 50 arranged on the left refrigerating chamber door 22a are electrically connected to each other, and the sub-control unit 68 which the operation / display unit 50 has ( 4 and 5), a plurality of lead wires 41a for wired communication are inserted.

3, the aspect which arrange | positions the operation and display part 50 to the left refrigerator compartment door 22a is shown by sectional drawing. 4, the operation and display part 50 is shown in an exploded perspective view. The operation and display unit 50 is disposed behind the sheet 7, which is a transparent film in which operation contents are described, and the film 8, and a substrate 8 provided with a plurality of touch electrodes for input under the substrate 8, and a substrate 8. The LED light emitting part 76 arranged further at the back, and the case 9 holding each of these member sheets 7, the board | substrate 8, and the LED light emitting part 76 are laminated | stacked. And each member sheet | seat 7, the board | substrate 8, and the LED light-emitting part 76 are hold | maintained integrally in the case 9, and slide to the left-right direction in the left refrigerator compartment door 22a, and the left refrigerator compartment door ( It is positioned at the predetermined position of 22a).

The front surface of the film 7 and the surface of the left side refrigerator compartment door 22a are covered by the refrigerator compartment door cover member 6 which consists of the glass plate 6a. Therefore, the refrigerator user inputs and operates the refrigerator main body 100 over this glass plate 6a.

Here, various functions of the refrigerator can be performed by the refrigerator user by the multifunctionalization of the refrigerator. For example, when the ice is urgently needed to produce ice rapidly, or when the product to be stored in the refrigerator is meat or the like and so-called vacuum chilled is required, the upper freezer 24 is put into the vacuum chilled mode. In addition, the temperature control for avoiding the cooling more than necessary can be changed according to the user's preference.

Therefore, the convenience of a refrigerator user is improved by enabling operation from the front surface of a refrigerator and displaying it on the front surface. However, as a result of the operation contents being diversified, the number of operation buttons (input sensors) is increased. In the case of this embodiment shown in Fig. 4, six switch electrodes for input operation are provided, and each is displayed in three stages of, for example, steel, medium, and weak. These operations are described in the sheet 7. In order to correspond to the base material of the sheet | seat 7, the LED light-emitting part 77b is arrange | positioned at the LED light-emitting part 76. FIG. The LED light-transmitting part 77b changes the direction of the light which generate | occur | produced in LED by approximately 90 degree, and irradiates the operation content described in the sheet | seat 7. As for the case 9, the unevenness | corrugation is formed corresponding to the shape of LED and the LED light-emitting part 77b, and the unevenness | corrugation corresponding to the shape of the electronic component arrange | positioned at the board | substrate 8 is formed in the right end side.

Next, the detail of the board | substrate 8 which this operation display part 50 has is demonstrated using FIG. 5 is a front view (FIG. 5A) and a rear view (FIG. 5B) of the substrate, and an enlarged perspective view (FIG. 5C) of the touch sensor unit. In the upper part of the board | substrate 8, many holes 63 of the horizontally long rectangular shape for fitting LED and LED light-transmitting part 77b are provided, and the display part 56 is formed. In the lower part of the board | substrate 8, switch electrodes 70 (touch sensors 70a-70h) of several touch sensors which comprise a touch panel are arrange | positioned in a horizontal line. Each of the switch electrodes 70a to 70h, which are switch electrodes, has a horizontally long rectangular shape, and is connected to the touch sensor IC 64 and the wiring patterns 67a to 67h disposed further to the right of the switch electrode 70h disposed at the right end. It is electrically connected by. In order to avoid interference by noise, the wiring patterns 67a to 67h are positioned differently as far as possible with respect to the touch sensors 70a to 70h adjacent to each other.

In the sub-control unit 68 disposed at the right end, the microcomputer 72 for mainly controlling the light emission of the LEDs and the communication is disposed on the rear surface. The communication microcomputer 72 is for processing the signal input from the operation part 60, and transmitting it to the main control part 41. FIG. The connector 73 is disposed in the communication unit, and functions as a terminal when performing wired communication with the main control unit 41. The alarm buzzer 74 is also arranged in the sub-control unit 68.

As mentioned above, since the board | substrate 8 is attached to the left refrigerator compartment door 22a of the French door type (rotary) of the refrigerator main body 100, the length of the board | substrate 8 is left and right of this left refrigerator compartment door 22a. Constrained to below width dimensions. Moreover, practically, it is restrict | limited also by the point of the design of an operation surface, and the efficiency of the area which pulls out the board | substrate 8 from a raw material.

Since the left refrigerator compartment door 22a of the refrigerator main body 100 is filled with a heat insulating material, when assembling the operation / display part 50 to the left refrigerator compartment door 22a, a board is inserted from the side of the left refrigerator compartment door 22a. Doing. Therefore, since an operation part cannot be arrange | positioned in the part which is necessary in design, such as a logo display, the sub-control part 68 is formed by gathering and arrange | positioning the electronic component mounting part in this part. In the present embodiment, since the sub-control unit 68 and the main controller 41 disposed on the ceiling of the refrigerator main body 100 are wired in communication, the sub-control unit 68 includes a communication control unit 75 necessary for this communication. I'm making it. As a result, the touch sensor switch electrodes 70c to 70h necessary for the input operation are arranged in a horizontal line on the left side of the sub-control unit 68. And the wiring patterns 67a-67h with respect to this switch electrode 70c-70h are wired from the touch sensor IC 64 arrange | positioned near the sub control part 68. As shown in FIG. The communication method with the main control unit may be optical communication as well as wired communication as in the present embodiment.

In addition, in the board | substrate 8 shown in the present Example, the function which does not accept operation | movement when a some switch is operated simultaneously as a malfunction prevention function is employ | adopted. For example, incorrect operation switch electrodes 70a and 70b are provided at both ends of the switch electrodes 70c to 70h for input operation so that the switches at both ends are not determined to be ON even when the surface is mopped.

Parts necessary for communication control and the like are arranged at the right end of the substrate 8 as the sub-control section 68. In order to prevent interference in the input operation, the width direction length and the interval required for each switch electrode 70c to 70h are determined. When the number of switches increases, the width direction length allocated to the misoperation preventing switch electrodes 70a and 70b cannot be sufficiently secured.

Here, when the capacitive touch sensor is used, the contact with a switch electrode is detected from the change of the capacitance of a switch electrode. In addition to the case where the capacitance of the switch electrode changes in contact with the switch electrode, there may be a case where the capacitance of the switch electrode changes due to environmental changes such as noise or temperature change from the outside even if it is not in contact. This latter unintended change in capacitance is handled by setting a threshold so that the switch is not determined to be ON. In general, since the amount of change in capacitance due to environmental changes is small and the amount of change due to contact is large, the threshold value is set so that the switch is turned on as the intended operation is performed when the capacitance changes significantly to prevent malfunction. .

By the way, when the area of the switch electrode is small, the difference in capacitance between non-contact and contact becomes small, and when setting the threshold value for measuring the presence or absence of input, it becomes difficult to distinguish it from the change due to environmental change or noise. The touch sensor is likely to cause malfunction. Therefore, in order to make it hard to cause malfunction even if the area of a switch electrode becomes small, in this embodiment, even if it is a narrow switch electrode, an electrode area is made to be substantially the same as another switch electrode.

Specifically, as shown in Fig. 5C, in order to increase the amount of change in the capacitance of the switch electrode even when only the surface side has a short width direction length of the touch sensor 70b and only a small electrode area can be obtained. The back switch electrode 70j is also disposed on the back surface side, and a metal coating 62 film covering the through hole 61 formed in the substrate 8 between the touch sensor 70b and the back switch electrode 70j. You are connected via

In addition, although it is set as the connection by the wiring 59 of a lead wire in an Example, the wiring pattern formed continuously with the metal film 62 of the through-hole 61 may be natural. In addition, the through hole 61 may be formed integrally with the touch sensor 70b and the back switch electrode 70j. Alternatively, the electrode terminals may be integrally formed in the touch sensor 70b and the back switch electrode 70j instead of the through holes 61, and the terminals may be inserted into and soldered to the substrate.

Here, the capacitive touch sensor is restricted in the wiring patterns 67a to 67h from the touch sensor IC 64 to the touch sensors 70a to 70h so that a plurality of switches do not interfere with each other. The distance between the wiring patterns 67a to 67h and the other touch sensors 70a to 70h and the touch sensors 70a to 70h need to be arranged to be separated by a predetermined distance or more. However, according to the present embodiment, since the back switch electrode 70j for enlarging the area of the switch for preventing misoperation 70b is disposed on the immediately back side where the switch for preventing misoperation 70b is disposed, the same switch is used. Because of this, there is no fear of interference. That is, if it is in the range of the projection surface of the misoperation prevention switch electrode 70b provided in the surface, the back (expansion) switch electrode 70j may be arrange | positioned without changing the positional relationship with the other touch sensors 70a, 70c-70h. Can be.

In this embodiment, when one switch electrode is small, the switch electrode which enlarges is arrange | positioned on the back surface, Needless to say, you may arrange | position the switch electrode which enlarges with respect to each of a some switch electrode. However, in the case where the capacitive touch sensor has a plurality of switch electrodes, since the change in capacitance of the switch electrodes adjacent to each other is detected as noise, the size between the switch electrodes and the wiring pattern from the switch electrode to the sensor IC are detected. The dimension of is constrained. Therefore, when providing a switch electrode in the back surface and enlarging an electrode area, if a back side switch electrode is provided in the range of the projection part of the switch electrode provided in the surface side, a board | substrate area can be utilized effectively.

Next, with reference to FIG. 6, the operation | movement of the control part of the refrigerator main body 100 which concerns on this embodiment which consists of the main control part 41 and the sub control part 68 is demonstrated. 6 is a control block diagram. The user of the refrigerator 100 operates each operation switch of the operation unit 60 to set the temperature of each storage compartment. The operation unit 60 is a touch panel composed of a plurality of touch switches. The display unit 56 displays the current operating state of the refrigerator 100 by LED. In addition, the brightness of LED is individually controlled by the dimming means 51.

On the other hand, the main control part is provided in the upper part of the refrigerator 100 as mentioned above, The display part 56, the operation part 60, the light control means 51, the door opening / closing detection means of each storage compartment, and the compressor 30 for cooling the inside of a refrigerator are shown. ) And a control target device 10, such as a blower 27 (cooling fan), are connected.

The main controller 41 starts / stops the compressor 30 or the cooling fan 27 on the basis of the set temperature information of each storage compartment input and set from the operation unit 60 or information such as a temperature sensor (not shown). Or rotational speed control. The main control unit 41 further displays information indicating the current control state and the opening / closing state of each door detected by the door opening / closing detection means of each storage compartment on the display unit 56 or displays information operated from the operation unit 60. Invalidate it. By transmitting the information from the sub-control unit 68 to the main control unit 41 in this way, it is possible to operate the refrigerator that is optimal for the user.

3: hinge 3a: left hinge
3b: Right hinge 6: Refrigerator door cover member
6a: glass plate 7: sheet
8: substrate 9: case
10: control target device 11: packing
12 to 14: partition member 15a: tubular projection
15b: hole 16: sealing means
19: heat insulation box 20: inner box
21: outer box 21a: top plate
21b: thick plate 22: refrigerating chamber
22a: Left fridge door 22b: Right fridge door
22c: refrigerating chamber door open and close detection means 23: ice making room
23a: ice-making room door 23b: ice-making room door opening and closing detection means
24: upper freezer 24a: upper freezer door
24b: upper freezer door open and close detection means
25: lower freezer compartment 25a: lower freezer door
25b: lower freezer door open and close detection means
26: Vegetable Room 26a: Vegetable Room Door
26b: vegetable chamber door opening and closing detection means 27: blower
28: cooler 30: compressor
31 condenser 40 concave
41: main controller 41a: lead wire
42: cover 45: high
50: operation / display section 51: dimming means
56 display unit 59 wiring
60: operation unit (input unit) 61: through hole
62: metal sheath 63: (marking) hole
67, 67a ~ 67h: wiring pattern 68: sub-control unit
70, 70c ~ 70h: switch electrode (touch sensor)
70a, 70b: switch electrode (touch sensor) for preventing misoperation
70j: backside switch electrode 71: touch sensor IC
72: communication microcomputer 73: connector
74: buzzer 75: communication control unit
76: LED light emitting portion 77a: LED
77b: LED floodlight portion 78: flange portion
100: refrigerator (body)

Claims (6)

A main control unit for controlling a blower that blows cold air in the refrigerator and a compressor constituting a refrigeration cycle, an input unit having a capacitive touch sensor disposed on a front door surface, and the touch sensor. In the refrigerator having a sub-control unit having a display unit for displaying the operation results from a plurality of switch electrodes, and communicating between the main control unit and the sub-control unit,
At least one of the said plurality of switch electrodes has an electrode in the front side and the back side of the board | substrate with which the said switch electrode was provided, The refrigerator characterized by electrically connecting the switch electrode of the front side, and the switch electrode of the back side. The method of claim 1,
The said switch electrode of the front side electrically connected with the switch electrode of the said back side among the said switch electrodes is narrower than the area of the switch electrode of the other front side which does not have a switch electrode in the back side. The method of claim 1,
Display means for displaying the operation contents of the plurality of switch electrodes is provided, and both ends of the plurality of switch electrodes connected to the touch sensor are for preventing misoperation, and at least one electrode of the switch electrodes disposed at both ends is A refrigerator provided on the front side and the back side of a board | substrate, and is electrically connected. The method according to any one of claims 1 to 3,
The said front door is a pair of rotary type, and the said sub control part is arrange | positioned in the width direction length shorter side of the said front door, The refrigerator characterized by the above-mentioned. The method of claim 4, wherein
A hinge portion for rotatably holding the front door at an upper end of the refrigerator, forming a hole into which the hinge portion is inserted in an upper portion of the front door, and communicating the main control portion and the sub-control unit through the hinge portion; Featured refrigerator. 3. The method according to claim 1 or 2,
A refrigerator, characterized in that the electrode area is enlarged by providing a switch electrode on the back side within the projection range of the switch electrode on the front side.

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