JP2005322511A - Cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To further improve appearance by providing an easy-to-see display, and hiding unnecessary portions. <P>SOLUTION: A top plate 15 is translucent, and a fluorescent character display tube 23 is provided below the top plate 15 as a display means. In the fluorescent character display tube 23, an anode itself emits light, and since an angle of visibility is wider and luminance is higher in comparison with a liquid crystal display, display is easy to see even from a line of sight of a user which will be from obliquely upward with respect to the cooker 2. Since the top plate 15 is translucent, a lit display part of the fluorescent character display tube 23 can be visually confirmed, but an unlit part will be hard to visually confirm. By this, since only a necessary portion can be displayed and unnecessary portions can be hidden, it is superior in design quality, and display contents can be made more clearer. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a heating cooker configured to heat an object to be heated placed on a top plate by heating means provided below the top plate.

In this type of heating cooker, for example, an induction heating cooker, a liquid crystal display is provided below the top plate, a backlight is provided on the back of the liquid crystal display, heating coils that are heating means are turned on / off, input power Is known to display the level of the display by the liquid crystal display (see, for example, Patent Document 1). In this case, the portion of the top plate corresponding to the liquid crystal display is transparent so that the display on the liquid crystal display can be seen from above the top plate.
JP-A-7-94267

  The liquid crystal display using the above liquid crystal display has the following drawbacks. First, when a user views the display of the liquid crystal display, there is a situation that the liquid crystal display is often viewed from obliquely above. However, although the liquid crystal display is illuminated with a backlight, the viewing angle (the angle at which the display can be viewed) is narrow, and the display state is often difficult to see from an oblique direction. In addition, the liquid crystal display has a defect that it is not only a display state portion but also a non-display state portion, and the appearance is deteriorated.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a heating cooker that can make the display easy to see and can make unnecessary portions difficult to see and can have a better appearance.

  In order to achieve the above object, a heating cooker according to the present invention is configured to heat an object to be heated placed on a top plate by a heating means provided below the top plate. The top plate is translucent and a fluorescent display tube is provided below the top plate.

  According to the present invention, the fluorescent display tube is used as the display means provided below the top plate. The fluorescent display tube emits light from the anode itself, and has a wider viewing angle and higher brightness than a liquid crystal display. Therefore, the display is possible even from the user's line of sight obliquely above the cooking device. Easy to see. Moreover, since the top plate is translucent, the lighting display portion of the fluorescent display tube can be visually recognized, but the non-lighting portion is difficult to be visually recognized. For this reason, only necessary portions can be displayed and unnecessary portions can be made difficult to see. Therefore, the design is excellent and the display contents can be easily understood.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
First, FIG. 1 shows an external perspective view of a state where a cooking device 2 is incorporated in a kitchen cabinet 1. In FIG. 1, the main body 3 of the heating cooker 2 is stored in a storage portion 4 provided in the cabinet 1. A roaster portion 5 is provided on the left portion of the main body 3, and an operation portion 6 is provided on the right portion. The operation unit 6 is provided with a plurality of switches 7.

  An upper heating unit 10 as shown in FIG. 2 is provided on the upper portion of the main body 3. The upper heating unit 10 has a left heating coil 12 and a right heating coil 13 for induction heating arranged in the left and right sides in a rectangular box-shaped upper case 11 whose upper surface is open, and is positioned on the rear side of the central portion. For example, a central heater 14 made of a radiant heater is arranged, and a top plate 15 made of heat-resistant glass is provided on the upper surface opening so as to cover the coils 12 and 13 and the heater 14 from above.

  On the top plate 15, circular heating units 16, 17, and 18 are respectively displayed above the left and right heating coils 12 and 13 and the central heater 14. The left and right heating coils 12 and 13 are induction-heated based on being energized and controlled with the cooking container placed on the heating parts 16 and 17, and the central heater 14 is heated. The cooking container is heated based on being energized and controlled while the cooking container is placed on the portion 18. The left and right heating coils 12 and 13 and the central heater 14 constitute heating means.

  The front case in the upper case 11 is provided with thermal display units 20 and 21 each having a large number of LEDs (light emitting diodes) 19 positioned in front of the left and right heating coils 12 and 13. A high temperature caution display unit 22 having an LED 19 and a fluorescent display tube 23 are provided between the heating coils 12 and 13. Therefore, the thermal power display units 20 and 21, the high temperature display unit 22, and the fluorescent display tube 23 are disposed below the top plate 15. Each thermal power display part 20 and 21 is arrange | positioned so that the outer periphery of the corresponding heating part 16 and 17 may be followed substantially. In this case, the top plate 15 has a translucent configuration by forming a thin film of metal, such as titanium, by sputtering on the back surface (lower surface) of the substantially transparent crystallized glass. It has spectral transmission characteristics in the visible light region.

  FIG. 4 shows a specific display example of the fluorescent display tube 23. FIG. 4 shows a state where all the display parts are lit. The display contents of the fluorescent display tube 23 include a use state display unit 24 indicating the use state of the left and right heating coils 12 and 13 and the central heater 14, a hot water display unit 25, a stir-fry display unit 26, a tempura display unit 27, and a rice cooking display. The unit 28, the roaster display unit 29, and the thermal power display unit 30 (shared with the roaster and the central heater) are provided. In this case, red and blue are used as display colors of the display units 24 to 30.

  In addition, although not shown in figure, it is located in the lower surface side of the said heating parts 16 and 17 in the top plate 15, and the temperature sensor is provided. In addition, although not shown, a control device including a microcomputer is provided inside the operation unit 6. This control device is based on the operation signal of the switch 7 of the operation unit 6, the detection signal of the temperature sensor, and the control program prepared in advance, the left and right heating coils 12, 13, the central heater 14, and the heater of the roaster 5. While controlling the heating means (not shown) etc., it has the function to control the said thermal-power display parts 20 and 21, the high temperature caution display part 22, and the fluorescent display tube 23. FIG.

In the above configuration, the thermal power display units 20 and 21 display the degree of thermal power of the corresponding heating coils 12 and 13 according to the number of the LEDs 19 that are turned on. The high temperature caution display unit 22 is turned on when the temperature detected by the temperature sensor is higher than the set temperature. The fluorescent display tube 23 displays various display contents by lighting.
Here, FIG. 5 shows the transmittance characteristics of the top plate. In FIG. 5, a characteristic line A relates to the top plate 15 (titanium sputtered) of the embodiment of the present invention. In the visible light region (about 400 to 700 nm) of the light, the spectral transmittance of about 700 nm corresponding to red is larger than the spectral transmittance of about 500 nm corresponding to blue and green.

  In the embodiment described above, the fluorescent display tube 23 is used as the display means provided below the top plate 15. The fluorescent display tube 23 emits light from the anode itself, and has a wider viewing angle and higher luminance than a liquid crystal display. Therefore, even from obliquely above, while watching the cooking state and the operation unit 6. However, there is an advantage that the display is easy to see. Moreover, since the top plate 15 is translucent, the lighting display portion of the fluorescent display tube 23 can be visually recognized, but the non-lighting portion is hardly visually recognized. For this reason, only necessary portions can be displayed and unnecessary portions can be made difficult to see. Therefore, the design is excellent and the display contents can be easily understood.

  As shown in FIG. 5, the top plate 15 has a spectral transmittance of approximately 700 nm corresponding to red in the visible light region, which is larger than a spectral transmittance of approximately 500 nm corresponding to blue or green. It has the following features. That is, in the fluorescent display tube, the blue and green luminances are several times larger than the red luminance because of the luminous efficiency of the phosphor. Accordingly, as described above, the luminance of the top plate 15 is reduced by making the spectral transmittance of about 700 nm corresponding to red in the visible light region larger than the spectral transmittance of about 500 nm corresponding to blue or green. It is possible to make the brightness of red and blue or green, which have high brightness, substantially the same (the brightness of each color is substantially uniform), and it is easier to see and has better design.

Further, since the display of the fluorescent display tube 23 is also displayed as an illustration, the display contents can be made easier to understand.
Further, since the fluorescent display tube 23 is disposed between the two left and right heating coils 12 and 13 adjacent to each other on the left and right, the display for both the left and right heating coils 12 and 13 is displayed at one place. It can be performed.

  Further, the heating power display units 20 and 21 and the high temperature caution display unit 22 of the heating coils 12 and 13 are not displayed on the fluorescent display tube 23 but displayed on the LED 19. In particular, as the high-temperature caution display section 22 that displays safety-related information, the use of the LED 19 that is a light source that has a longer life and lower power than a fluorescent display tube can improve safety and save power during display. It becomes. Incidentally, a fluorescent display tube has a service life of about 8000 hours and a power consumption of about 3 W, whereas an LED has a service life of 50000 to 100,000 hours, and the power consumption is about 100 mW.

  In the above-described embodiment, the top plate 15 is configured to form a thin film of titanium on the back surface of the crystallized glass. Instead, a translucent film is formed by forming a thin film of metal such as silicon. It is good also as a structure. Furthermore, it is good also as a structure which uses colored crystallized glass, for example, brown crystallized glass. A characteristic line B in FIG. 5 shows a characteristic line in the case of colored crystallized glass. Also in the characteristic line B, in the visible light region, the spectral transmittance of about 700 nm corresponding to red is larger than the spectral transmittance of about 500 nm corresponding to blue and green. Similar effects can be obtained.

  Moreover, about making a top plate into a translucent structure, it is good also as a structure which provides a filter in the lower surface of a transparent top plate. In this case, in the state where the filter is provided, as described above, in the visible light region, the spectral transmittance of about 700 nm corresponding to red is larger than the spectral transmittance of about 500 nm corresponding to blue or green. It is preferable that

The present invention is not limited to the above-described embodiment, and can be modified or expanded as follows.
The cooking device is not limited to the built-in type incorporated in the kitchen cabinet 1, and can be applied to a device used by placing it on a worktop or tabletop.
The heating means provided below the top plate 15 is not limited to the heating coils 12 and 13 and the central heater 14 for induction heating, and may be gas.

The perspective view which shows one Embodiment of this invention Plan view of the main part shown with the top plate removed Front view showing partly broken Diagram showing the display contents of the fluorescent display tube Characteristic chart showing light transmission characteristics of top plate

Explanation of symbols

In the drawings, 1 is a cabinet, 2 is a cooking device, 6 is an operation unit, 12 is a left heating coil (heating means), 13 is a right heating coil (heating means), 14 is a central heater (heating means), and 15 is a top. Reference numeral 19 denotes an LED (light source), 20 and 21 denote a thermal power display unit, 22 denotes a high-temperature caution display unit, and 23 denotes a fluorescent display tube.

Claims (8)

In a heating cooker configured to heat an object to be heated placed on a top plate by heating means provided below the top plate,
A heating cooker characterized in that the top plate is translucent and a fluorescent display tube is provided below the top plate.   The cooking device according to claim 1, wherein the top plate has a spectral transmission characteristic in a visible light region.   The cooking device according to claim 2, wherein the top plate has a spectral transmittance of approximately 700 nm corresponding to red in a visible light region larger than a spectral transmittance of approximately 500 nm corresponding to blue or green.   The cooking device according to any one of claims 1 to 3, wherein the top plate has a configuration in which a metal thin film is formed on the back surface of a substantially transparent crystallized glass.   The cooking device according to any one of claims 1 to 3, wherein the top plate is made of colored crystallized glass.   The cooking device according to any one of claims 1 to 5, wherein an illustration is displayed by a fluorescent display tube.   The heating cooker according to any one of claims 1 to 6, wherein two heating means are provided, and the fluorescent display tube is disposed between the two heating means. The cooker according to any one of claims 1 to 7, wherein a light source other than a fluorescent display tube is used for the high temperature warning display.

Images