JP2007123075A - Heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating cooker allowing a heating condition to be recognized from a cooker body as well as a top plate by a display device having a simple structure. <P>SOLUTION: This heating cooker is equipped with a display device 4 having a light emitting element 18 and a light guide body 16 for displaying a heating condition; and the light guide body 16 of the display device 4 is formed into a nearly L-shaped form by a translucent member and is structured such that its corner part is formed into an inclined surface 19, and a light emitting surface 20 of the light guide body 16 on the side opposite to the light emitting element and the inclined surface 19 of the corner part are arranged oppositely to display parts 1a and 2c formed on the cooker body 2 and its top plate 1. Thereby, light can be simultaneously emitted through the light emitting surface 20 of the light guide body 16 on the side opposite to the light emitting element and the inclined surface 19 of the corner part by the display device 4 having a simple structure, the heating condition can be recognized from each of the display parts 1a and 2c, and cooking can easily be carried out. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cooking device that heats a cooking container such as a pan placed on a top plate.

Conventionally, this type of cooking device is provided with a display device that displays a heating state, and this is generally composed of a light source and a light guide, and optically displays through a top plate (for example, patents). Reference 1).
Japanese Patent Laid-Open No. 2003-197357

  However, in the conventional configuration, since the display of the heating state is performed only through the top plate, it may be difficult to recognize the heating state from the operation position depending on the user's eyes. For this reason, it is necessary to look into the display unit so as to approach the heating unit while operating. In particular, in an induction heating cooker, the cooking container directly generates heat, so there is no flame like a gas stove and the heater does not red heat like a sheathed heater. It is likely to be difficult to do. Moreover, depending on the size of the cooking container placed on the top plate, the display unit is covered and the heating state cannot be grasped. Therefore, if a display unit is provided on the operation unit on the front side of the device in addition to the top plate, it is easy to check the heating state, but a separate display device is required at each display unit position, which is expensive. It is.

  This invention solves the said conventional subject, and it aims at providing the cooking device which can recognize a heating state also from a cooking device main body other than a top plate with the display apparatus of a simple structure.

  In order to solve the above-mentioned conventional problems, a heating cooker according to the present invention includes a cooker body with a heating source, a top plate mounted on the cooker body and on which a cooking container is placed, a light emitting element, and a light guide. And a light guide of the display device, the light guide of the display device is formed in a substantially L shape from the translucent member and has a corner portion as an inclined surface. The light emitting surface on the non-light emitting element side and the inclined surface of the corner portion are disposed opposite to the display portion provided on the cooker body and the top plate.

  Thereby, it is possible to emit light simultaneously through the light emitting surface on the non-light emitting element side of the light guide and the inclined surface of the corner portion by a display device with a simple configuration, respectively from the display portion provided on the cooker body and the top plate. The heating state can be recognized, and cooking can be easily performed.

  The heating cooker of this invention can recognize a heating state from the display part provided in the cooker main body and the top plate with the display apparatus of simple structure, respectively.

  1st invention has a cooking device main body which equipped the heating source, the top plate which is equipped on this cooking device main body, and mounts a cooking container, and has a light emitting element and a light guide, and displays a heating state. The light guide of the display device is formed in a substantially L shape from the translucent member and has a corner portion as an inclined surface, and the light emitting surface on the non-light emitting element side of the light guide and the corner portion By using a heating cooker with the inclined surface opposed to the display unit provided on the cooker body and the top plate, the light emitting surface on the non-light emitting element side of the light guide and the corner portion are inclined by a display device with a simple configuration. Light can be emitted simultaneously through the surface. In other words, the heating state can be recognized from the display unit provided on the cooker body and the top plate, respectively, and cooking can be easily performed.

  In particular, according to the second invention, in the first invention, at least one of the light emitting surface on the non-light emitting element side of the light guide and the inclined surface of the corner portion is an irregular reflection surface, so that the light emitting surface is more uniform. Can be made to emit light.

  In the third invention, in particular, in the first or second invention, the light guide has a plurality of inclined surfaces, so that the light emitting surface can be provided at an arbitrary position regardless of the position of the light emitting element. .

  In particular, in the fourth invention, in any one of the first to third inventions, a plurality of light guides having different inclined surfaces are arranged side by side, so that the strength of the thermal power depends on the size of the light emitting surface. Can be used as a level meter.

  In a fifth aspect of the invention, in particular, in any one of the first to fourth aspects of the invention, the light guide is divided into a fixed portion that is fixed to the display portion of the cooker body and a light guide portion that faces the fixed portion. Thus, even when the outer shell of the cooker body is divided into upper and lower parts, the light guide is divided into the fixed part and the light guide part, so that the light guide can be brought into close contact with the outer parts. , Prevents intrusion of water and dust, and can be assembled easily.

  In the sixth aspect of the invention, in particular, in the fifth aspect of the invention, the light splitting surface of the light guide is constituted by a divided inclined surface, so that a light emitting surface can be provided in addition to the inclined surface of the corner portion. A display device having a width of can be configured.

  In the seventh invention, in particular, in the sixth invention, the length of the light emitting surface is obtained by changing the angle of the divided inclined surface of the adjacent light guides and changing the projected area of the divided inclined surface stepwise. Therefore, it can be used as a level meter indicating the strength of firepower.

  The eighth invention can be used as a level meter that shows the strength of the thermal power according to the number of the light emitting surfaces, in particular, by configuring a plurality of divided inclined surfaces of the light guide in the sixth invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 and 2 show a table-type induction heating cooker as a representative example of the heating cooker according to Embodiment 1 of the present invention.

  As shown in FIG. 1, the cooking device includes a top plate 1 on which a cooking container such as a pan is placed, and a cooking device body 2 having a heating source. The top plate 1 is made of tempered glass or ceramics and is provided on the cooker body 2. The main body 2 of the cooking device 2 is configured by combining the upper case 2a and the lower case 2b vertically. And the display parts 1a and 2c of a heating state are provided in the upper surface of the top plate 1 and the operation part surface of the cooking appliance main body 2, respectively. The display units 1a and 2c are simply holes or light-transmitting portions, and the configuration is not particularly limited. An operation knob 3 is provided in the vicinity of the display unit 2c which is the operation unit surface of the cooker body 2. In consideration of design and operability, the operation knob 3 can be a button type or a touch type without any problem.

  FIG. 2 shows the internal configuration of the cooker main body 2. A heating coil 5 as a heating source is provided in the approximate center of the lower case 2 b, and a substrate 7 of the inverter unit is placed under the heating coil 5. A substrate 9 of the operation unit is arranged in the front, and a substrate 8 of the power supply unit is arranged in the right rear. A plug receiver for attaching a capacitor or a magnet plug for DC conversion of commercial AC power is attached to the substrate 8 of the power supply unit. A substrate 9 of the operation unit is provided with an operation device for adjusting heating power and selecting a menu, and a display device 4 for displaying a heating state.

  In addition, a fan motor 10 is provided on the left front side of the heating coil 5 to cool the heat sink, other components on the board, and the heating coil 5 to which the heat generating parts attached to the board 7 of the inverter unit are fixed. For this reason, the lower case 2b has a circular intake port below the fan motor 10, and an exhaust port 12 is provided on the side and bottom surfaces away from the intake port. In the present embodiment, since it is a quadrangular product, the exhaust port 12 is also provided on the rear surface.

  The heating coil 5 is formed by winding a bundle of thin copper wires so as to form a disk shape. The heating coil 5 is placed on a coil base 6 made of an insulator containing ferrite, and is sandwiched and fixed by a coil holder 11. ing. A sensor 14 for detecting temperature is provided at the center of the heating coil 5.

  3 and 4 show details of the display device 4 of the heating cooker according to the present embodiment. The display device 4 includes a plurality of light emitting elements 18 arranged on the substrate 9 of the operation unit, and a plurality of light guides 16 made of a translucent member such as polycarbonate having one light emitting surface opposed to each light emitting element 18. The light-emitting element 18 and the light guide 16 have a resin cover 17 that surrounds the periphery of the light guide body 16 and is open only upward. The light guide 16 is formed in a substantially L shape and has a corner portion as an inclined surface 19. The light emitting surface 20 on the non-light emitting element side and the inclined surface 19 at the corner portion are formed on the cooker body 2 and the top plate 1. The display units 1a and 2c provided are arranged to face each other.

  In addition, when the display part 2c of the cooking appliance main body 2 is a hole, the light emitting surface 20 of the light guide 16 can directly face the display part 2c, and the inclined surface 19 is located below the top plate 1. It is positioned and opposed to the display unit 1a. Further, when a plurality of light guides 16 are connected to the cover 17, the light emission surface 20 of the light guide 16 shines even though the adjacent light leaks and the corresponding light emitting element 18 does not shine, so that the visibility is improved. This is to prevent the problem from getting worse. A non-transparent sheet on which characters and figures are printed can be attached to the upper surface of the cover 17 so that the letters and figures can emit light. Similarly, characters and figures can be emitted in the same manner by the printing configuration of the top plate 1.

  In addition, a cooking container is placed on the top plate 1 and may become a high temperature of 200 ° C. or higher, but the general heat-resistant temperature of the light-emitting element 18 is about 85 ° C., and sufficient cooling and heat insulation are provided. Necessary. Therefore, the position of the light emitting element 18, that is, the position of the substrate 9 needs to be set as low as possible, and the light guide 16 is made of a material having high heat resistance such as polycarbonate, and a heat insulating material for the light emitting element 18. By adopting such a structure that the lid is formed, it is possible to keep the light emitting element 18 at a low temperature and to reduce failure.

  The operation and action of the cooking device configured as described above will be described below.

  When heating is started, a high frequency current flows through the heating coil 5 by the control circuit, and the cooking vessel on the top plate 1 is induction heated. At this time, a part of the light from the light emitting element 18 is refracted in the lateral direction by the inclined surface 19 with respect to the traveling direction in the light guide 16, reaches the light emitting surface 20, and is close to the operation knob 3 of the cooker body 2. The display unit 2c emits light. Further, a part of the light passes through the inclined surface 19 as it is and is emitted, and can be seen through the top plate 1 on the display unit 1a. Although the heating state is displayed on the operation unit and the display units 1a and 2c on the top plate 1, it is displayed in an easy-to-understand manner which setting is the strength of the heating power. For example, a plurality of light emitting elements 18 are provided on the substrate 9, and the heating state is displayed by the number of lighting thereof.

  With such a configuration, in addition to the display unit 1a on the top plate 1, the display unit 2c can be provided near the operation unit, and the operation amount and the thermal power can be easily recognized. In addition, even when a large cooking container that hides the display unit 1a is placed on the top plate 1, it is possible to know the thermal power with the display unit 2c on the operation unit side, The risk of lowering firepower can be reduced. In addition, since a plurality of surfaces can emit light with a single light-emitting element, the number of light-emitting elements, the number of substrates, and the size can be reduced, which leads to rationalization of material costs.

  As described above, the heating cooker according to the present embodiment is configured such that the light emitting surface 20 on the non-light emitting element side of the light guide 16 and the corner portion are inclined by the display device 4 having a simple configuration in consideration of the configuration of the light guide 16. Light can be emitted in two places simultaneously through the surface 19. That is, the heating state can be recognized from the display units 1a and 2c provided on the cooker body 2 and the top plate 1, respectively, and cooking can be easily performed.

  In the present embodiment, the display device has a configuration in which a plurality of light guides 16 are provided. However, if only the state of whether or not heating is performed is recognized, it is necessary to provide a plurality of light guides 16. There may be no single use.

  In addition, the light incident portion 21 of the light guide 16 is transparent so that light does not reflect and easily enters. On the other hand, by applying at least one of the light emitting surface 20 on the non-light emitting element side of the light guide 16 and the inclined surface 19 of the corner portion to make a diffuse reflection surface, light is irregularly reflected uniformly, and there is no unevenness. It can emit light neatly.

  Further, by providing a plurality of inclined surfaces 19 on the light guide 16, the light emitting surface can be provided at an arbitrary position regardless of the position of the light emitting element 18.

  Furthermore, by changing the direction of the light guide 16 formed in a substantially L shape, the light emitting surface 20 is made to face the display portion 1a of the top plate 1, and the inclined surface 19 is made to face the display portion 2c of the cooker body 2. It is also possible.

(Embodiment 2)
FIG. 5 shows the display device portion of the cooking device according to the second embodiment of the present invention. The same elements as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in the drawing, in the present embodiment, the light guide 16 is divided into a fixing portion 16a that is fixed to the display portion 2c of the cooking device body 2 and a light guide portion 16b that faces the fixing portion 16a. In addition, in order to ensure visibility, it is desirable for the light emission surface 20 of the fixing | fixed part 16a to be flush with the display part 2c of the cooking appliance body 2. In addition, it is desirable that the divided opposing surface of the light guide 16 be transparent so that the distance is as short as possible and that the light is dispersed as much as possible.

  Thereby, even when the outer shell of the cooker body 2 is divided into the upper case 2a and the lower case 2b, the light guide 16 is divided into the fixed portion 16a and the light guide portion 16b, so that the fixed portion is fixed. The part 16a can be fixed in close contact with an outer part, that is, a hole in the display part 2c of the case upper 2a in this embodiment. Thereafter, by combining the lower case 2b, the light guide portion 16b on the substrate 9 is disposed to face the fixed portion 16a.

  If the light guide 16 is configured as an integral type without being divided, the light guide 16 is inserted into a hole provided in the case upper 2a at the time of assembly. Considering workability at the time of assembling and variations in parts, a gap is inevitably formed between the case 2a and the light guide 16, and water and dust enter the cooker body 2 through the gap and the substrate 9 The light guide 16 is divided into a configuration, so that the fixing portion 16a can be fixed to the outer part without any gaps in advance, preventing water and dust from entering, And it can be assembled easily. The same applies to the structure in which the light guide 16 is sandwiched between the upper case 2a and the lower case 2b having cutout holes.

  As described above, the cooking device in the present embodiment can be brought into close contact with the outer parts of the cooking device main body by dividing the light guide body, prevents intrusion of water and dust, and is easily assembled. be able to.

(Embodiment 3)
FIG. 6 shows a display device portion of the heating cooker according to the third embodiment of the present invention. The same elements as those in the first and second embodiments are denoted by the same reference numerals, and the description thereof is omitted.

  In the present embodiment, a plurality of light guides 16 having different sizes (for example, lengths) of the inclined surfaces 19 are arranged side by side. Thereby, it can utilize as a level meter which shows the strength of a thermal power with the magnitude | size of the inclined surface 19 which is a light emission surface.

  That is, when the display unit 1 a is viewed from the top plate 1 side, the light emitting surface is a projected area portion of the inclined surface 19 of the light guide 16. Therefore, when a plurality of light-emitting elements 18 are arranged side by side to display a thermal power or display a large character or figure, the light-emitting elements 18 of the same size can emit light uniformly by increasing the inclined surface 19. In the case of thermal power display, as shown in the figure, the size of the light incident portion 21 of the adjacent light guide 16 is gradually changed, and the size of the inclined surface 19 is changed to change the light emitting surface visible from the top surface of the top plate 1. Since the length seems to gradually increase with each light-emitting element 18, everyone can visually recognize the magnitude of the thermal power visually.

  Thus, the heating cooker in this Embodiment arranges the several light guide 16 from which the magnitude | size (for example, length) of the inclined surface 19 differs in parallel, and is a thermal power by the magnitude | size of a light emission surface. It can be used as a level meter that shows strength.

(Embodiment 4)
FIGS. 7-9 shows the display apparatus part of the heating cooker in Embodiment 4 of this invention. The same elements as those in the first and second embodiments are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 7, in the present embodiment, the light guide 16 is divided and the divided surface is constituted by divided inclined surfaces 16c. Thereby, it becomes possible to provide the light emission surface of the division | segmentation inclined surface 16c besides the inclined surface 19 of a corner part, and can comprise the display apparatus with the width | variety of design more.

  Further, as shown in FIG. 8, the angle of the divided inclined surface 16c of the adjacent light guides 16 is changed, and the projected area of the divided inclined surface 16c is changed stepwise to gradually widen. Thereby, it can utilize as a level meter which shows the strength of a thermal power with the length of the light emission surface of the division | segmentation inclined surface 16c.

  Furthermore, as shown in FIG. 9, the divided inclined surfaces 16 c of the adjacent light guides 16 are configured by changing a plurality of numbers. In this case, the angles of the divided inclined surfaces 16c are the same, and a plurality of them are connected. Thereby, it can utilize as a level meter which shows the strength of a thermal power with the number of the light emission surfaces by a division | segmentation inclined surface.

  As described above, the cooking device according to the present embodiment gives a wide range of design by considering the divided inclined surface 16c, its angle, and the number, for example, “strong / medium / weak” characters. By providing a level meter near the display, it is possible to prevent a user's operation mistake and use it safely.

  As described above, the cooking device according to the present invention can recognize the heating state from the display unit provided on the cooking device main body and the top plate by the display device with a simple configuration, not limited to the induction heating cooking device, Regardless of the heating method and type, such as a sheathed heater, a radiant heater, or a halogen heater, it can be used for all cooking devices.

The perspective view of the heating cooker in Embodiment 1 of this invention The top view which shows the internal structure of the heating cooker The perspective view of the display apparatus in the heating cooker An exploded perspective view of a display device in the cooking device Sectional drawing of the display apparatus part of the heating cooker in Embodiment 2 of this invention The related figure of the plane and side which show the light-guide body structure of the display apparatus of the heating cooker in Embodiment 3 of this invention. Sectional drawing of the display apparatus part of the heating cooker in Embodiment 4 of this invention The related figure of the plane which shows the other light guide body structure of the display apparatus in the same heating cooker, and a side The related figure of the plane and side which shows the further another light guide structure of the display apparatus in the same heating cooker

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Top plate 1a, 2c Display part 2 Cooker main body 3 Operation knob 4 Display apparatus 16 Light guide 16a Fixing part 16b Light guide part 16c Division | segmentation inclined surface 18 Light emitting element 19 Inclined surface 20 Light emitting surface 21 Light incident part

Claims (8)

A cooker body equipped with a heating source, a top plate mounted on the cooker body and on which a cooking container is placed, a light emitting element and a light guide, and a display device for displaying the heating state. The light guide of the display device is formed in a substantially L shape from a translucent member and has a corner portion as an inclined surface, and the light emitting surface on the non-light emitting element side of the light guide and the inclined surface of the corner portion are cooker bodies. And a cooking device disposed opposite to the display provided on the top plate. The cooking device according to claim 1, wherein at least one of the light emitting surface of the light guide on the non-light emitting element side and the inclined surface of the corner portion is an irregular reflection surface. The cooking device according to claim 1 or 2, wherein the light guide has a plurality of inclined surfaces. The cooking device according to any one of claims 1 to 3, wherein a plurality of light guides having different inclined surface sizes are arranged side by side. The heating cooker according to any one of claims 1 to 4, wherein the light guide is divided into a fixing part that is fixed to the display part of the cooker body and a light guide part that faces the fixing part. The cooking device according to claim 5, wherein the divided surface of the light guide is configured by a divided inclined surface. The cooking device according to claim 6, wherein the angle of the divided inclined surfaces of adjacent light guides is changed to change the projected area of the divided inclined surfaces stepwise. The cooking device according to claim 6, wherein a plurality of divided inclined surfaces of the light guide are configured.