JP2014095495A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating cooker using an operation display module which is disposed between the lower surface of a top plate and the top surface of a chassis outer ward part and comprises a self-luminous display device and a capacitance-type touch key.SOLUTION: A heating cooker is provided with an operation display module 4 comprising a self-luminous display device where a plurality of displays can be exchanged on the same display surface. The operation display module 4 is disposed between the lower surface of a top plate 1 and the top surface of a chassis outer ward part 9 to improve operability without spoiling good appearance as a heating cooker.

Description

  The present invention relates to an induction heating apparatus used for a general kitchen or business use that heats an object to be heated by using induction heating by a high frequency magnetic field.

  Conventionally, this type of heating device is provided with an operation unit using a capacitive touch key on which a user inputs operation information on a top plate and a display unit using a liquid crystal display element for displaying an operation state. The liquid crystal display element is arranged on the same line as the unit and between the operation units (see Patent Document 1). In addition, there is a configuration in which light is guided by a light guide plate and a symbol display that prompts an operation formed of a conductive film is raised by light (see Patent Document 2).

  FIG. 6 is a cross-sectional view of a conventional cooking device described in Patent Document 1. A top plate 101 on which the object to be heated 105 is placed, a heating unit 106 for heating the object to be heated 105, an operation unit 102 having a capacitive touch key for a user to input operation information, and a heating unit 106 The display unit 104 includes a liquid crystal display element 103 for displaying the operation state.

  FIG. 7 is a cross-sectional view of a conventional cooking device described in Patent Document 2. As shown in FIG. A top plate 201 of a plate-like member having electrical insulation provided on the top surface of the housing, a symbol display 202 that operates on the back surface of the top plate 201, a light emitting unit 204 connected to the control circuit 205, It comprises a light guide plate 203 that guides light and a cabinet 206 that fixes the housing.

  In the above configuration, by arranging the display unit 104 on the same line from the center of the heating unit 106 between the operation unit 102 and the heating unit 106, the operation unit 102 corresponding to the heating unit 106 and the display unit 104 can be associated with each other. It is. In addition, it is easy to place an operation between the top plate 201 and the cabinet 206 by arranging a configuration in which the light of the light emitting unit 204 is guided by the light guide plate 203 and the symbol display 202 is raised on the top surface of the top plate 201. It becomes possible to make it possible to discriminate between.

JP 2005-302632 A JP 2008-091193 A

However, in the conventional configuration, as the number of cooking menus and functions increases, the number of switches on the operation unit increases when the user selects a cooking mode or the like, and the operation hierarchy becomes deep. For this reason, since the number of times of pressing the operation unit increases, there is a problem that operability is lacking. In addition, the operability can be improved if the key display is displayed graphically using a liquid crystal display element on the operation unit. However, the height of the operation unit is high, so it is necessary to keep the operation unit within the upper opening of the cabinet. Therefore, it is difficult to dispose near the front that is easy for the user to operate. In addition, when considering placing a key display using a liquid crystal display element between the top surface of the cabinet and the bottom surface of the top plate, the height from the cabinet to the top plate is kept low, and the design is high and the usability is good. In the above configuration, the height of the gap between the lower surface of the top plate and the upper surface of the outer casing is low, and it is difficult to arrange the operation unit using the liquid crystal display element there. Furthermore, since it is difficult to see the display in a dark kitchen or the like with only a liquid crystal display element in a heating cooker, it is required to provide a configuration that emits light such as a backlight under the liquid crystal display element. The height becomes higher. In addition, if the space height of the display unit is widened so that the liquid crystal display element and the backlight can be arranged in the gap between the bottom surface of the top plate and the top surface of the housing, the top plate becomes considerably higher than the top surface of the cabinet. It had the subject that the aesthetics as a heating cooker were spoiled, and a user's usability became bad.
This invention solves the said conventional subject, and it aims at providing the heating cooker which can aim at the improvement of operativity, without impairing aesthetics.

  In order to solve the conventional problems, a heating cooker according to the present invention includes a top plate on which an object to be heated is placed, a casing inserted into an upper surface opening of a cabinet, and the casing below the top plate. Projecting in the outer peripheral direction, and at least a part of the casing is placed on the upper surface of the cabinet, a heating unit provided in the casing for heating an object to be heated, and provided corresponding to the heating unit An operation display module having a capacitance type touch key, wherein the operation display module displays a key display corresponding to each key of the touch key by a self-luminous display device, and the key corresponding to the touch key. The display content can be changed according to the cooking state, and the operation display module is arranged between the lower surface of the top plate and the casing outer portion.

  As a result, it is not necessary to use a backlight, which is an essential configuration when using a liquid crystal display element, so that the operation display module can be made thin, and the cooking device that does not impair the beauty as a cooking device. Can be provided. In addition, since it is possible to switch the key display displayed on the operation display module to a different key display at the same display position, it is possible to arrange only the available key displays in a balanced manner so that they can be easily understood and operated. The number of times the user presses the operation unit when selecting a cooking mode or the like can be reduced, and a cooking device that can improve operability can be provided.

  The heating cooker of this invention can provide the heating cooker which implement | achieves the improvement of operativity, without impairing the beauty | look as a heating cooker.

Sectional drawing of the heating cooker in Embodiment 1 of this invention The top view of the heating cooker in Embodiment 1 of this invention The top view at the time of the heating mode of the heating cooker in Embodiment 1 of this invention Top view of heating cooker in Embodiment 2 of the present invention The top view of the heating cooker in Embodiment 3 of this invention Sectional view of a conventional cooking device Sectional view of a conventional cooking device

According to a first aspect of the present invention, there is provided a top plate on which an object to be heated is placed, a housing that is inserted into an upper surface opening of the cabinet, a projecting toward the outer periphery of the housing below the top plate, and at least a part of the cabinet. An operation display module having a casing outer portion placed on the upper surface, a heating section provided in the casing for heating an object to be heated, and a capacitance type touch key provided corresponding to the heating section. The operation display module displays a key display corresponding to each key of the touch key by a self-luminous display device, and the display content of the key display corresponding to the touch key is changed according to a cooking state. The operation display module is configured to be disposed between the lower surface of the top plate and the casing outer portion, so that the backlight that is essential in the liquid crystal display element is provided. Can be eliminated with the use of the display device of the self light emission, and can be thinned in the operation display module, it is possible to provide a heating cooker that does not impair the aesthetics of the cooking device. In addition, since a plurality of displays can be switched on the same display surface, the number of times the user presses the operation unit when selecting a cooking mode or the like can be reduced, and operability can be improved. be able to.

  According to a second aspect of the present invention, in particular, in the cooking device of the first aspect, the operation display module displays a detailed description of an error code generated when heating of the heating unit cannot be continued instead of the key display. By adopting the configuration, it is possible to display a cancellation method or the like when an error occurs, and visually transmit information to the user.

  In a third aspect of the invention, in particular, in the cooking device of the first or second aspect of the invention, the display device is configured to use an organic EL, thereby suppressing the thickness as compared with a liquid crystal panel or a plasma panel. Therefore, the operation display module can be thinned, and further, light can be emitted at a low voltage, so that power consumption can be reduced.

  According to a fourth aspect of the invention, in particular, in the heating cooker according to any one of the first to third aspects of the invention, the operation display module includes a case portion made of an insulator and is insulated from the casing outer portion. This ensures insulation from the upper surface of the outer casing that is connected to the chassis ground, prevents damage to the operation display module, and fixes the operation display module in the gap between the lower surface of the top plate and the upper surface of the outer casing. Alternatively, since it can also serve as a fixing tool for positioning, the structure is excellent in insulation and positional stability.

  According to a fifth aspect of the present invention, in particular, in the heating cooker according to any one of the first to fourth aspects of the invention, disposed on the lower surface of the top plate and between the operation display module and the heating unit. The display unit displays the operating state of the heating unit, and the display unit is installed below the operation display module so that the temperature rise is high in consideration of the case where the object to be heated is shifted. By adopting a configuration in which the display portion is away from the object to be heated, heat resistance can be given structurally, so that a cooking device capable of alleviating the influence of temperature rise can be provided.

  In a sixth aspect of the present invention, in particular, in the cooking device according to any one of the first to fifth aspects, when the operation display module detects that the object to be heated has approached due to a change in capacitance, the object to be heated is detected. Heating that can mitigate the temperature rise of the operation display module by making a notification before the high temperature object is approaching directly above the operation display module. A cooker can be provided.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings, taking a heating cooker as an example. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 shows a cross-sectional view of a heating cooker according to the first embodiment of the present invention.

In FIG. 1, a heating cooker according to a first embodiment of the present invention includes a housing 12 that forms an outline of a product, and a top plate 1 that is an electrically insulating plate member provided on the upper surface of the housing 12. A heating unit 2 that heats an object to be heated that is provided in the housing 12 and placed on the top plate 1; and the housing 12 is inserted into the upper surface opening of the cabinet 5 and fixed to the kitchen; The housing outer shell 9 is located in the region of the top plate 1 and protrudes from the housing 12 toward the outer periphery of the housing 12, and is placed so that at least a part thereof overlaps the upper surface of the cabinet 5. An operation display that is disposed between the lower surface and the upper surface of the cabinet 5 and has an operation function using a capacitive touch key for a user to input operation information and a display function using a self-luminous display device. Mo A display unit 3 configured by a light emitting diode or the like that is arranged below the rule 4 and between the operation display module 4 and the heating unit 2 and displays an operation state of the heating unit 2 according to operation information; A control board 6 that electrically controls the operation display module 4, a flat cable 8 that is inserted into a connector of the control board 6 that transmits an electrical signal to the operation display module 4, and the operation display module 4 from the casing outer portion 9. An insulating case portion 7 made of an electrically insulating insulator, and a frame sandwiching the top plate 1 and the casing outer portion 9 in a substantially U-shape at the periphery of the top plate 1 and the casing outer portion 9 together. 11.

  FIG. 2 shows a top view of the cooking device according to the first embodiment of the present invention.

  In FIG. 2, the heating cooker according to the first embodiment of the present invention includes an operation state of the cabinet 5 that fixes the casing and the kitchen, and the heating unit 2 disposed between the heating unit 2 and the operation display module 4. It is comprised from the display part 3 which displays. The operation display module 4 has a plurality of input switches. Each input switch displays a key display by a self-luminous display device. When the user touches each key display, the switch input by the touch key is performed. It has come to be. When the user puts a pan or the like on the heating unit 2 and touches the menu key 4b, the cooking menu can be selected, and when the heating on / off key 4a is touched, heating is started in the selected cooking menu, and the specified heating power When the up key 4c is touched in the heating mode in which heating is performed, the heating power is increased, and when the down key 4d is touched, the heating power is decreased. In the standby mode and heating mode before heating, the timer up key 4e or the timer down key 4f is touched. The timer time can be set. At that time, when the timer up key 4e is touched, the timer time increases, and when the timer down key 4f is touched, the timer time decreases.

  Moreover, FIG. 3 has shown the top view at the time of the heating mode of the heating cooker in this Embodiment.

  In FIG. 3, an object to be heated 10 such as a cooking pot is placed on a top plate 1 directly above the left heating unit 2 out of two heating units 2. When the heating mode is started by touching the heating on / off key 4a in FIG. 2, the heating on / off key 4a and the menu key 4b disappear and the heating off key 4g is newly displayed. At the same time, the size of the key display of the up key 4c and the up key 4d is widened so that the touch input range follows the key display.

  About the cooking-by-heating machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, the object to be heated 10, which is a cooking pot containing food, is placed in the left area of the heating unit 2, and when the user touches the heating on / off key 4 a, the object to be heated is heated by the left heating unit 2. 10 heating is started. In the area on the left side of the display unit 3, the heating power that the heating unit 2 is heating the object to be heated 10 is displayed, the initial heating power immediately after touching the heating on / off key 4a is medium, and the display unit 3 is weak. The middle lamp is turned on, and the strong lamp is turned off, indicating that the heating power is medium.

When the heating mode is started by touching the heating on / off key 4a, the heating on / off key 4a in the operation display module 4 disappears and the heating off key 4g is newly displayed, and the heating off key 4g is heated. Change the background color of the on / off key 4a to a conspicuous color such as red, and surround the key display frame with double lines so that you can easily see the location compared to other key displays. In addition, since there is no key display of a conspicuous color in the right region of the operation display module 4 corresponding to the heating unit 2 on the right side that is not heated, the heating unit 2 that is being heated only by looking at the region of the operation display module. I understand, and can operate without hesitation when I want to stop heating immediately.

  The menu key 4b, which is a key display that is not used in the heating mode, eliminates the key display in the heating mode to prevent an erroneous operation, and secures a space that can be used when another key display is enlarged or its shape is changed. Yes.

  The tracking of the touch input range by changing the size of the key display can be achieved by reducing the electrostatic touch key input unit and providing a plurality of electrostatic touch key inputs corresponding to one key display. Can be realized by changing the correspondence of the corresponding electrostatic touch key input when the height is changed, but as another method, the key display position can be input by the touch position input device and the key display position. It is also possible to determine whether or not a key input is made by detecting whether or not a touch position corresponding to is input. Of course, without changing the size of each key display, only the display contents and function assignment of the key display are changed or the position is exchanged, or the center position of the key display is not moved and the touch input is not affected. When the size of the key display is changed within the range, the key input method can be a fixed position input method as in the prior art.

  Thereby, the thickness of the operation display module 4 can be reduced, the appearance as a cooking device is not impaired, and a plurality of displays can be switched on the same display surface, so that the operability can be improved. Moreover, short circuit destruction with the operation display module 4 or the cabinet 5 can be prevented.

  As described above, in the present embodiment, the backlight unit is indispensable in the display configuration using the conventional liquid crystal display element, but the backlight unit can be deleted by using a self-luminous display device. By realizing the thickness reduction, the operation display module 4 having both the operation function and the display function can be arranged on the lower surface of the top plate 1 and the upper surface of the casing outer portion 9, so that the beauty as a cooking device can be obtained. There is no loss.

  Further, by using a self-luminous display device, it is possible to freely switch the screen of the display surface, and a conventional operation display button for guiding and floating the conventional light as shown in FIG. 1 is displayed. Although it is possible to achieve the same operability as usual, when the user, for example, an elderly person operates, instead of reducing the number of conventional operation display buttons, the size of the operation display buttons is increased and the displayed symbols It is possible to improve the operability by making it easy to see. In addition, when the power switch is turned on, the operation display buttons are lined up in five modes, such as heating mode, boiling mode, fried food mode, grilled mode, and automatic water heater mode, so that the user can check the mode that the user wants to cook at a glance. Therefore, operability can be improved.

  The operation display module 4 achieves thinning by using an organic EL that can be thinner than a liquid crystal element or a plasma element, and the organic EL has lower image quality and lower power consumption than other display devices. There is also an advantage.

  Further, by covering at least the lower surface of the operation display module 4 with an insulator constituting the insulating case portion 7, it is possible to avoid short circuit destruction with the casing outer portion 9 or the cabinet 5 connected to the ground, and to display the operation display. The module 4 can also serve as a fixture for fixing or positioning the module 4 in a limited gap between the lower surface of the top plate 1 and the upper surface of the casing outer portion 9, and the strength of the structure is increased. It is possible to provide a heating cooker with improved display position accuracy.

  In general, electronic parts such as the display unit 3 and the operation display module 4 have a heat resistance specification of about 85 ° C. Therefore, when a high-temperature object to be heated is shifted to the top of the display unit 3 or the operation display module 4, the strict display unit 3 is installed below the operation display module 4 from the viewpoint of heat resistance, and the control board 6 is cooled. Considering not to exceed the heat resistance specifications by taking the configuration, and because there is an effective space above the control board 6, it is also possible to arrange tall radial parts such as electrolytic capacitors, It also has a structure that can alleviate the height constraints of the board design.

  In addition, since the operation display module 4 is provided near the front end of the top plate 1, even if an object to be heated is placed immediately above the operation display module 4, Since the object to be heated 10 rides on a frame 11 that is one step higher than the top plate 1 and surrounds the end of the top plate 1, it does not contact the top plate 1 on the surface and passes through the top plate 1. The heat conduction to the operation display module 4 is suppressed. On the other hand, when the object to be heated 10 is placed on the frame 11 at a position where the object to be heated 10 does not ride, generally, the bottom of the pan may be circular and the bottom corner may be rounded. Since there are many, only the part where the corner of the round end of the bottom of the pan which is the object to be heated 10 is rounded is positioned on the upper part of the operation display module 4 arranged at the end of the top plate 1. Heat conduction is difficult to occur suddenly.

  In the case of an induction heating cooking appliance in which the heating unit 2 generates high frequency noise, there is an advantage that the influence of the high frequency noise is reduced by increasing the distance of the operation display module 4 from the heating unit 2. Further, the connection portion of the flat cable 8 that connects the operation display module 4 to the control board 6 is provided in the vicinity of the casing outer portion 9 so that the connection distance to the operation display module 4 is as short as possible. It is also possible to reduce high frequency noise.

  In the embodiment of the present invention, not only the characters and designs to be displayed are enlarged or reduced, but also the characters and designs are displayed in color, not monochrome, according to the operating state. Since it is the best state to change the display in accordance with the environment, it is not limited to this.

(Embodiment 2)
FIG. 4 shows a top view of a heating cooker according to the second embodiment of the present invention.

  In FIG. 4, since it is the same structure as FIG. 2, it abbreviate | omits.

  About the cooking-by-heating machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, since the operation display module 4 can display a detailed description of an error code generated due to misuse, it can visually transmit information to the user.

  As described above, in the present embodiment, it is possible to display text on the same display surface by using a display device that self-lumines the configuration of the operation display module 4, so that the user can misuse it. In addition to displaying the error code that occurs, the detailed explanation of the error code and the cancellation method can be displayed side by side on one screen, so that information can be visually transmitted to the user. it can.

FIG. 4 shows a U04 error code indicating that a cloth or the like is placed on the exhaust panel of the heating unit 2 on the left side and exhaust cannot be performed. A detailed explanation of the error code is displayed on the upper side of U04, and the release method is displayed on the lower side. Is shown. In addition, the U14 error code indicating that the object to be heated in the right heating unit 2 is baked and the temperature of the heating unit 2 is rising is displayed. A detailed explanation of the error code is displayed in the upper horizontal section of U14. Shows the release method.

  When an error code occurs, it becomes impossible to operate, so switching from the screen displayed in normal state and displaying the error code and detailed explanation on the entire display means that operation is not possible during the error It is possible to communicate indirectly to the person.

  In the embodiment of the present invention, the detailed description and the cancellation method are displayed at the same time. However, in order to enlarge the text of the displayed text, the cancellation method is displayed after the detailed description is displayed. There are also means for displaying and a means for displaying with a telop flowing from the right side to the left side, and the present invention is not limited to this.

(Embodiment 3)
FIG. 5 shows a top view of a heating cooker according to the third embodiment of the present invention.

  In FIG. 5, since it is the same structure as FIG. 2, it abbreviate | omits.

  About the cooking-by-heating machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, since the operation display module 4 can detect that the object to be heated 10 is shifted due to a change in capacitance and approaches the object, the object to be heated 10 is shifted to the user before the heat resistance specification is exceeded. The fact that it is arranged can be notified and the temperature rise of the operation display module 4 can be mitigated.

  As described above, in the present embodiment, by using the operation display module 4 having a capacitive touch key, a change in capacitance when the heated object 10 comes close to the operation display module 4 is detected. It is possible, and before the high-temperature object to be heated 10 is shifted and arranged right above the operation display module 4, the object to be heated 10 is arranged out of the heating area of the heating unit 2. By notifying the fact, it is possible to mitigate the temperature rise of the operation display module 4 and prevent destruction in advance.

  FIG. 5 shows an error code when the heated object 10 of the heating unit 2 on the right side is shifted downward and is close to the operation display module 4, and a detailed explanation of the error code is shown in the horizontal upper row of U70. The lower part shows the release method.

  In the embodiment of the present invention, the detailed description and the release method are displayed at the same time. However, at the same time as the display, the means for audibly alerting the user with the voice and the display are displayed at the same time. In order to cool the operation display module 4, there is a means for lowering the temperature of the operation display module 4 by performing control that maximizes the fan speed, but the present invention is not limited to this.

  As described above, the cooking device according to the present invention has a capacitive touch key displayed by a self-luminous display device between the lower surface of the top plate and the upper surface of the cabinet, and corresponds to the touch key. By arranging the operation display module that can change the display, it is possible to improve operability without impairing the beauty as a cooking device, such as built-in type or stationary type used on a table, It is effective for cooking appliances for home use or business use.

DESCRIPTION OF SYMBOLS 1 Top plate 2 Heating part 3 Display part 4 Operation display module 5 Cabinet 6 Control board 7 Insulation case part 9 Case outer part 10 Object to be heated 12 Case

Claims (6)

A top plate on which an object to be heated is placed, a housing inserted into the upper surface opening of the cabinet, and projects outward in the outer periphery of the housing below the top plate, and at least a portion is placed on the upper surface of the cabinet An operation display module having a casing outer part, a heating unit provided in the casing for heating an object to be heated, and a capacitance type touch key provided corresponding to the heating unit, The display module displays a key display corresponding to each key of the touch key by a self-luminous display device, the display content of the key display corresponding to the touch key can be changed according to the cooking state, and the operation display The module is a heating cooker disposed between the lower surface of the top plate and the outer casing portion. The cooking device according to claim 1, wherein the operation display module is configured to display a detailed description of an error code generated when heating of the heating unit cannot be continued instead of the key display. The cooking device according to claim 1, wherein the display device uses an organic EL. The cooking device according to any one of claims 1 to 3, wherein the operation display module includes a case part made of an insulator and is insulated from the casing outer part. A display unit disposed on a lower surface of the top plate and disposed between the operation display module and the heating unit and displaying an operation state of the heating unit according to operation information, the display unit including the operation display The cooking device according to any one of claims 1 to 4, wherein the cooking device is installed below the module. The heating according to any one of claims 1 to 5, wherein the operation display module is configured to display that the object to be heated has approached when detecting that the object to be heated has approached due to a change in capacitance. Cooking device.