JP2013148273A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating cooker that can increase the visibility of an object to be cooked placed in a heating chamber irrespective of a cooking method and a state of the heating chamber during and after cooking.SOLUTION: An illuminator 6 emits light having characteristics equivalent to the outside when a radio wave generator 3 is in operation and heating/cooking is not carried out, and emits light that can have characteristics equivalent to the outside by balancing out the light emitted from the heater 4 when a heater 4 is in operation.

Description

  The present invention relates to a cooking device that heats an article accommodated in a heating chamber.

  The heating cooker includes a plurality of methods (functions) for heating an article housed in a heating chamber (referred to as an article to be heated). For example, the heating cooker heats an article to be heated using a heater that generates heat when energized, a so-called oven function, or a so-called microwave oven function that irradiates and heats an article to be heated. It has a so-called steam heating function or the like for spraying steam onto the article to be heated to heat the article to be heated.

  The cooking device is provided with a door that can be opened and closed on the front, and the door is provided with a window through which the inside can be observed. When using the heating cooker, the cooking state (baked color, burnt color, etc.) of the article to be heated in the heating chamber may be confirmed by opening the door and directly viewing the article to be heated. When the door is opened, the temperature in the heating chamber rapidly decreases, so it may be difficult to open the door depending on the article to be heated or the contents of cooking, and the cooking condition is determined by observing the article to be heated from the outside. It is carried out.

  When the article to be heated is viewed from the outside of the heating cooker, it often looks different from the color of the article to be heated seen in the kitchen or a table (under the daylight white fluorescent lamp). This is because the color temperature of incandescent bulbs conventionally used as interior lighting is low. In other words, the color temperature of sunlight during the day is about 6500K (blue white) and the color temperature of daylight type fluorescent lamps is about 4000K (white), whereas the color temperature of incandescent bulbs is about 2800K (orange). This is because. When an incandescent light bulb is used as interior lighting as in a conventional cooking device, the article to be heated in the heating chamber is irradiated with orange light, and the article to be heated looks reddish as a whole. Therefore, it is often difficult to determine the cooking state (baked color, burnt color, etc.) of the article to be heated.

In view of this, Japanese Patent Application Laid-Open No. 2005-299977 describes a cooking device provided with interior lighting that emits light having a color temperature of 3000K to 5000K. As a result, the article to be heated inside the heating cooker can be observed in an illumination state close to observing under daylight sunlight or under a daylight fluorescent lamp, and it is easy to discriminate between baked and burned colors. Become. That is, the visibility inside the heating chamber Hr of the heating cooker in a state where the door is closed is improved.

Japanese Patent Laying-Open No. 2005-299977

  When cooking with the said heating cooker, settings, such as heating temperature and a heating time, may be adjusted, confirming the state of an internal heated article during cooking. Above all, when cooking with the heater, it is easy to be burnt or burnt, so the heated article inside the heating chamber is observed from the outside to check the cooking state (burned color, burnt color) of the heated article, and the heater Often adjust the output of. Most heaters used in the cooking device emit light when heated, and the color temperature of the emitted light is about 2000K to 3000K.

  When such a heater that emits light at a color temperature of 2000 K to 3000 K is used to illuminate the article to be heated with a light source that emits light at 3000 K to 5000 K as described in JP-A-2005-299977, the heater is used during cooking. Therefore, the article to be heated in the heating chamber Hr looks reddish and is difficult to adjust compared to the actual article to be heated on the kitchen or table.

  Moreover, in the case of the thing equipped with the above-mentioned interior lighting, when heating cooking with the said range function and when cooking with the said oven function, the way of seeing a to-be-heated article differs, It is difficult to check the state, that is, the visibility becomes low.

  Then, this invention aims at providing the cooking device which can improve the visibility of the to-be-heated article arrange | positioned irrespective of the state of a heating chamber, such as a cooking method, during cooking, and after cooking. To do.

  In order to achieve the above object, the present invention comprises a heating chamber that houses a heated article, a radio wave generator that radiates and heats the heated article, and a heater that radiates and heats the heated article. Illuminating means for irradiating light inside the heating chamber, and the illuminating means cancels the light emitted from the heater when the heater is driven, and the heater is not driven Provided is a heating cooker that irradiates light that has the same characteristics as the time.

  According to this structure, when using a heater that emits visible light for cooking, the characteristics of the illumination in the heating chamber are the same between when the heater is not used and the difference in the appearance of the article to be heated is suppressed. be able to. That is, the visibility of the article to be heated can be improved. Thereby, during cooking, the state of the article to be heated in the heating chamber can be accurately grasped from the window provided in the cooking device.

  Moreover, since the door is opened during cooking and it is not necessary to check the article to be heated, it is possible to prevent the temperature of the article to be heated from dropping rapidly during cooking. Thereby, it can suppress that the quality of the to-be-heated article falls by the rapid change of temperature.

  In the above configuration, the illuminating unit adjusts the emitted light with the color temperature, and when the radio wave generator is driven, the illumination unit emits light having a color temperature of about 4000 K to about 5000 K, and the heater is driven. When the color temperature is set, light having a color temperature of about 8000K to about 12000K may be emitted. By illuminating in this way, the light having a color temperature of about 2800K emitted from the heater is offset by the light having a color temperature of about 8000K to about 12000K, and the light having a color temperature of about 4000K to 5000K is totally heated. Can be irradiated. As a result, when using either a radio wave generator or a heater, or when it is not heated, the appearance of the article to be heated is placed under the daytime kitchen or table or under a daylight fluorescent lamp. It will be the same or almost the same as the time. That is, the visibility inside the heating chamber can be enhanced.

  In the above configuration, the apparatus further includes a steam generator that generates steam for heating the article to be heated, and the illumination unit has a color temperature of about 3500 K to about 4000 K when the steam generator is driven. You may make it irradiate light.

  The said structure WHEREIN: The said illumination means may be provided with the several light source from which the color temperature of the emitted light differs. At this time, the light sources themselves may emit different color temperatures, or a plurality of light sources that emit light of the same color temperature may be provided with filters that modulate the color temperatures to correspond to each other. .

  In the above-described configuration, the illumination unit includes one light source and a plurality of filters that modulate the color temperature of light from the light source, and emits light having different color temperatures by switching the filters. It may be a thing.

  In the above configuration, the illuminating unit includes a light source having a light emitting unit capable of independently emitting red, green, and blue light, and is emitted from the heater when the heater is driven. The intensities of red, green, and blue light may be adjusted so as to cancel out visible light in the visible light range and have a spectral distribution equivalent to that when the radio wave generator is driven.

  According to this configuration, since it is possible to adjust green, which is difficult to adjust at the color temperature, it is possible to bring the light state in the heating chamber closer to the daytime kitchen or table or under the daylight white fluorescent lamp.

  In the above-described configuration, the apparatus further includes a steam generator that generates steam for heating the article to be heated, and the illumination unit emits light having a wavelength that is difficult to diffusely reflect in the heating chamber when the steam generator is driven. The light emission part which performs may be provided.

  In the above configuration, the illuminating means may reduce the luminance of the irradiation light when the heater is driven as compared to when the radio wave generator is driven. The illuminating means may adjust the luminance of the light to be irradiated according to the output of the radio wave generator.

  Since the light is emitted from the heater when the heater is driven, the luminance is higher than when the other heat sources are driven. Therefore, by limiting the luminance of the illumination means, the appearance of the article to be heated in the heating chamber is the same or substantially the same. The radio wave generator is driven with a high output when “warming” is performed and with a weak output when performing “decompression”. When performing “thawing”, it is better not to heat the article to be heated more than necessary, and it is preferable that the article is clearly visible. For this reason, when the output of the radio wave generator is low, the visibility of the inside of the heating chamber can be increased by increasing the luminance of the light emitted from the illumination means.

  The said structure WHEREIN: The said illumination means may use LED as a light source. In addition, when using white LED, you may use any LED, such as pseudo white LED, high color rendering white LED, and RGB white LED.

  ADVANTAGE OF THE INVENTION According to this invention, the cooking device which can improve the visibility of the to-be-heated article arrange | positioned inside irrespective of the state of a heating chamber, such as a cooking method, during cooking, after cooking, can be provided.

It is a perspective view of an example of the cooking-by-heating machine concerning the present invention. It is a block diagram which shows the electrical connection of the heating cooker concerning this invention. It is a table | surface which shows the color temperature and the brightness | luminance of the illumination state of the interior lighting in each heating state. It is a block diagram which shows the electrical connection of the other example of the heating cooker concerning this invention. It is a block diagram which shows the electrical connection of the further another example of the heating cooker concerning this invention.

(First embodiment)
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of an example of a heating cooker according to the present invention, and FIG. 2 is a block diagram showing an electrical connection of the heating cooker according to the present invention.

  As shown in FIG. 1, the heating cooker A includes an exterior casing Bd, a turntable TT, and a door Dr. The heating cooker A is provided with a door Dr provided at an opening on the front surface of the exterior casing Bd, and stores an article to be heated by opening the door Dr (an article to be heated) in the heating chamber Hr. In the heating cooker A, the article to be heated is placed on the turntable TT disposed inside the heating chamber Hr, the door Dr is closed, and the article to be heated is cooked while rotating the turntable TT. A window Wd is formed in the door Dr so that the inside can be confirmed even when the door is closed. The window Wd is fitted with a transparent material such as glass so that heat and vapor, which will be described later, do not escape, and a shield member (for example, a metal mesh, punching metal) for preventing radio waves from leaking. Etc.) are attached.

  The cooking device A has a microwave function for heating the article to be heated using radio waves (microwaves) from a radio wave generator, an oven function for heating the article to be heated using infrared rays from the heater, It has a steam heating function that heats the article to be heated using steam from the steam generator. In addition to these, a heating function for heating the article to be heated may be provided.

  As shown in FIG. 2, the cooking device A includes an operation unit 1, a door opening / closing detection sensor 2, a radio wave generator 3, a heater 4, a steam generator 5, an interior lighting 6, and a control unit 7.

  The operation unit 1 is usually arranged on the front side of the heating cooker A, for example, next to the door Dr. The operation unit includes an input unit 11 for a user to input an operation, and a display unit 12 for displaying information. The input unit 11 includes a switch for selecting the heating function described above. In addition to the selection of the heating function, a switch for determining the heating time and the heating temperature is provided. The display unit 12 includes a liquid crystal panel, for example, and is a display device for notifying the user of information such as a heating function, a heating time, and a heating temperature during operation in the heating cooker A. It is to be noted that a touch panel function for inputting is provided by contacting the display unit 12 with the image display unit, the input unit 11 is displayed on the display unit 12, and the input unit 11 displayed on the display unit 12 is contacted. Thus, an operation input may be performed.

  The input unit 11 of the cooking device A often does not include a power switch for turning on the main power. In the cooking device A, the door is almost always opened when cooking is performed. Therefore, the power is turned on or off by using the door opening / closing detection sensor 2 that detects opening / closing of the door Dr. For example, in the cooking device A, when the door open / close detection sensor 2 detects that the door Dr is opened, the power is turned on, and after the door Dr is closed, there is no input to the operation unit 1 for a certain period of time. Turn off the power. The power-on and power-off operations are performed by the control unit 7.

  The radio wave generator 3 includes an antenna (not shown) that irradiates the article to be heated with microwaves. When the article to be heated is irradiated with microwaves, the internal water molecules vibrate and are heated by the frictional heat between the water molecules. Since the microwaves emitted from the radio wave generator 3 may cause radio interference and adversely affect a living body such as a human body, the heating cooker A normally uses radio waves for partitioning the space for heating the article to be heated. In many cases, a shield (not shown) is formed.

  The heater 4 is a heat source for emitting infrared rays. The heater 4 generates infrared rays when energized. Infrared light emitted from the heater 4 is irradiated to the article to be heated, and the article to be heated is heated. When the heater 4 generates infrared rays, it simultaneously emits light having a color temperature of about 2000 K to 3000 K (red to orange), and this light is irradiated to the article to be heated. Since the infrared rays from the heater 4 are irradiated, the above-described radio wave shield has heat resistance.

  The steam generator 5 is a steam generator for generating steam to be sprayed on the article to be heated. The steam generator 5 includes a tank containing water and a heating unit (both not shown) for heating the water in the tank. Steam from the steam generator 5 fills the heating chamber Hr during cooking. When the inside of the heating chamber Hr is cooled after the cooking is completed, dew condensation occurs on the surface of the above-described radio wave shield. The radio wave shield is made of a metal that is not corroded by steam and dew condensation, or an inner surface is subjected to corrosion resistance processing.

  The interior lighting 6 is an illumination member for illuminating the heating chamber Hr of the heating cooker A. Here, an LED is used as the light source of the interior lighting 6. The interior lighting 6 is arranged so that the visibility of the article to be heated placed on the turntable TT is high when the interior is viewed from the window Wd of the door Dr. As such an attachment method, for example, the interior lighting 6 is arranged in the vicinity of the upper part of the opening of the heating cooker A when the door Dr is opened so as to irradiate light to the turntable TT (see FIG. 1).

  The interior lighting 6 is configured such that when the cooking device A uses the above-described functions of the microwave oven function, the oven function, and the steam heating function, each of them emits light having a different color temperature. Yes. The interior lighting 6 includes a microwave LED 61, an oven LED 62, and a steam heating LED 63. The LEDs 61, 62, and 63 will be described in detail later.

  The control unit 7 is an electronic circuit including an arithmetic device such as a microcomputer. The control unit 7 acquires an input signal from the input unit 11. The control unit 7 drives the radio wave generator 3, the heater 4, and the steam generator 5 based on the input signal. Moreover, the control part 7 has acquired the signal regarding opening / closing from the door opening / closing sensor 2, and when the door opening signal is received, the power source of the heating cooker A is turned on. When the period during which the door opening signal or the input signal from the input unit 1 is not acquired reaches a certain period, the heating cooker A is turned off. Furthermore, the control part 7 rotates the turntable TT with the start of heating by each heating function described above. Note that the rotation of the turntable TT ends with the end of heating. Further, the control unit 7 may rotate the turntable TT based on an input signal from the input unit 11. By comprising in this way, it is possible to confirm the cooking state (baked color, dark color, thawed state, etc.) of the whole article to be heated without opening the door Dr.

  The interior lighting, which is the main part of the present invention, will be described in detail, and then the lighting when each heating function is used will be described with reference to the drawings. The interior lighting 6 includes a microwave oven LED 61, an oven LED 62, and a steam heating LED 63 that are turned on when heating using the respective functions of the microwave oven function, the oven function, and the steam heating function.

  The microwave oven LED 61, the oven LED 62, and the steam heating LED 63 emit light having different color temperatures. When heating cooking is performed in the heating cooker A, the control unit 7 sends an instruction for lighting any one of the LED 61 for microwave oven, the LED 62 for oven, and the LED 63 for steam heating to the interior lighting 6. In addition, when controlling the brightness | luminance of LED61, 62, 63 with the control part 7, a brightness | luminance can be raised by enlarging an electric current. In some cases, PWM control is performed, and the luminance can be increased by increasing the PWM control ON ratio (on duty).

  When cooking with the microwave function, the article to be heated is cooked by irradiating the article to be heated with microwaves from the radio wave generator 3. At this time, only the light from microwave oven LED 61 is irradiated to the article to be heated. When viewing the heated article in the daytime kitchen or table to more accurately determine the state of the heated article when viewed from the window Wd provided on the door Dr during cooking with the microwave function The same appearance is preferable. Therefore, the LED 61 for microwave ovens that emits light having a color temperature similar to that of a daylight fluorescent lamp, that is, light having a color temperature of about 4000K to 5000K is used.

  The microwave oven function is used for a “warming” operation for warming the article to be heated and a “thawing” operation for thawing the frozen article. When performing the “warming” operation, it is generally sufficient to confirm that the article to be heated is swollen or deformed. Therefore, it is only necessary to visually recognize the article to be heated to a certain degree during the “warming” operation. On the other hand, when thawing a frozen article, if the article is heated too much, the quality of the article may deteriorate. Therefore, it is necessary to accurately visually check whether the frozen article has been thawed. Therefore, when the microwave oven function is used, the luminance of the microwave oven LED 61 is changed between the “thawing” operation and the “warming” operation. That is, the control unit 7 controls the microwave oven LED 61 so that the luminance is higher in the “thaw” operation than in the “warm” operation.

  When cooking by the oven function, the article to be heated is cooked by irradiating the article to be heated with infrared rays from the heater 4. As described above, the heater 4 emits light having a color temperature of about 2800 K (light that looks red to orange) at the same time when irradiating infrared rays. When cooking with the oven function, the article to be heated during cooking is reddish under the influence of such red to orange light. The oven LED 62 is an LED that emits light that cancels the influence of such red to orange light.

  Specifically, the oven LED 62 is an LED that can emit light having a color temperature of 8000K to 12000K. In the heating cooker A, when cooking by the oven function, light having a color temperature of about 2800 K from the heater 4 and light having a color temperature of 8000 K to 12000 K from the oven LED 62 are mixed. In such a state, when the article to be heated is observed through the window Wd of the door Dr, it is the same as when the article to be heated is irradiated with light having a color temperature of 4000 K to 5000 K, that is, to be heated in a kitchen or a table in the daytime. Looks like an article.

  Thus, when cooking with the oven function, the cooking state (baked color, burnt color, etc.) of the article to be heated can be accurately performed from the window Wd without opening the door Dr by irradiating light from the LED 62 for the oven. It is possible to visually recognize. Accordingly, it is not necessary to open and close the door Dr during cooking by the oven function, a rapid decrease in the temperature inside the heating chamber Hr can be suppressed, and a decrease in the accuracy of cooking can be suppressed.

  The control unit 7 cancels the influence of light having a color temperature of about 2800 K emitted from the heater 4 in accordance with the luminance of the light emitted from the heater 4, and irradiates the article to be heated with light having a color temperature of about 4000 K to 5000 K. The brightness of the oven LED 62 is adjusted so that it looks the same as the above. In addition, the LED 62 for ovens may be performed with an electric current similarly to the brightness adjustment of the LED 61 for microwave ovens, and may be performed by PWM dimming.

  When cooking with the steam heating function, steam is generated by the steam generator 5, and the steam is injected into the heating chamber Hr. Cooking is performed by spraying steam on the article to be heated. At this time, the inside of the heating chamber Hr of the cooking device A is in a state filled with steam, and it is difficult to visually recognize the article to be heated disposed inside the window Wd of the door Dr. When light with a high color temperature is irradiated to a place where the steam is filled, the light is diffusely reflected by the steam, so visibility is deteriorated. Therefore, the steam heating LED 63 is an LED that emits yellow to orange light that easily transmits light even in a space where steam is trapped, that is, light having a color temperature of about 3500K to 4000K.

  Thus, when cooking with the steam heating function, the article to be heated in the heating chamber Hr filled with steam is made visible by irradiating light from the steam heating LED 63. That is, it is possible to visually recognize the cooking state of the article to be heated from the window Wd without opening the door Dr. This eliminates the need to open and close the door Dr during cooking by the steam heating function, suppresses the leakage of steam filling the heating chamber Hr to the outside, and reduces the internal temperature of the heating chamber Hr rapidly. Condensation due to steam can be suppressed. And the fall of the precision of the heat cooking by the rapid change of the internal temperature of the heating chamber Hr in the middle of heat cooking can be suppressed. In addition, when cooking by the steam heating function, the irradiation light from the steam heating LED 63 irradiates strong light because there is no other light.

  Furthermore, if the control part 7 acquires the information to the effect that the door Dr was opened (when the door Dr is opened), the inside illumination 6 will be lighted and the inside of the heating cooker A will be irradiated with light. At this time, the control unit 7 controls the lighting of the microwave oven LED 61 so that the inside of the heating cooker A looks the same as the underside of the white fluorescent lamp. That is, in the heating cooker A, when the door Dr is opened, light of 4000K to 5000K is irradiated from the microwave oven LED 61 of the interior lighting 6. By doing in this way, the illumination state inside the heating chamber Hr of the heating cooker A when the door Dr is opened can be made the same as the daytime kitchen or dining table (under the daylight white fluorescent lamp).

  The color temperature of the interior lighting 6 does not necessarily have to be the same color temperature as that under the daylight white fluorescent lamp. When the radio wave generator 3 and / or the heater 4 is operating, It is possible to employ a wide range of color temperatures so that the machine 3 and the heater 4 can be seen in the same manner when the machine 3 and the heater 4 are not operating, and the cooking state (baked color, burnt color) can be easily visually recognized.

  In the following, the interior lighting in the heating cooker A is summarized as shown in FIG. FIG. 3 is a diagram showing the color temperature and brightness of the illumination state of the interior illumination in each heating state. FIG. 3 shows the heating device to be used (radio wave generator 3, heater 4, steam generator 5) for each cooking mode, and the color temperature and brightness of light emitted from the interior lighting 6 in the cooking mode. Yes. In addition, the LED currently used is also described in the part of color temperature, and the brightness | luminance is represented with weak, medium, and strong. As shown in FIG. 3, the heating cooker A includes “warming”, “thawing”, “oven”, “steam heating”, and “dual heating” as cooking modes.

  When the cooking mode is “warming” or “thawing”, the radio wave generator 3 is driven, and the output during “warming” is higher than the output during “defrosting”. The interior lighting 6 uses a microwave oven LED 61 to irradiate the heating chamber Hr with light having a color temperature of about 4000K to about 5000K. Further, the brightness of the irradiation light is “medium” during “warm” and “strong” during “decompression”.

  As shown in FIG. 3, when the cooking mode is “oven” or “dual heating”, the heater 4 is driven. The interior lighting 6 uses an oven LED 62 and irradiates the heating chamber Hr with light having a color temperature of about 8000K to about 12000K. Further, since light is emitted from the heater 4, the luminance when the cooking mode is “oven” and “dual heating” is “weak” to “medium” (varies depending on the intensity of the heater 4). Yes. As shown in FIG. 3, “dual heating” is a cooking mode in which the radio wave generator 3 and the heater 4 are driven at the same time to cook the article to be heated.

  When “warm”, “thaw”, “oven”, and “dual heating”, the color of the article to be heated when the inside of the heating chamber Hr is viewed from the window Wd (the brightness is different because the luminance is different, ) It looks the same or almost the same as when viewed under a daytime kitchen or dining table or a white fluorescent lamp.

  Further, “steam heating” may be used as the cooking mode. During the “steam heating”, the steam generator 5 is driven. At this time, since the inside of the heating chamber Hr is filled with steam, it is preferable to irradiate light that is difficult to diffuse. Therefore, the interior lighting 6 uses the LED 63 for steam heating, and irradiates the heating chamber Hr with light having a color temperature of about 3500K to 4000K. At this time, the luminance is “medium” to “strong”. The luminance is adjusted so that the article to be heated can be easily visually recognized based on the amount of steam generated from the steam generator 5, that is, the heating chamber Hr is filled.

  As described above, in the cooking device A, the interior lighting 6 includes the LEDs 61, 62, and 63 that emit light having different color temperatures for each heating function. Then, the control unit 7 selects the LED corresponding to the heating function (microwave oven LED 61 for the microwave function, oven LED 62 for the oven function, and evaporation heating LED 63 for the evaporation heating function), and is appropriately lit. The Accordingly, the appearance of the article to be heated from the window Wd of the door Dr when cooking with at least the microwave function and the oven function and the appearance of the inside of the heating chamber Hr when the door Dr is opened are made the same. be able to. In addition, when the steam heating function is used, unlike the other heating functions, the heating chamber Hr is filled with steam, so that the appearance is different. The irregular reflection of light can be suppressed and the visibility of the article to be heated can be increased.

  In the interior lighting 6, the microwave oven LED 61 emits light having a color temperature of about 4000K to 5000K, and the oven LED 62 emits light having a color temperature of about 8000K to 12000K. These lights are white lights, and the microwave oven LED 61 and the oven LED 62 are white LEDs. Examples of the white LED include a pseudo white LED, a high color rendering white LED, and an RGB white LED that emits three lights of RGB.

  Also, three white LEDs that emit the same light are provided, a filter is attached to the white LED to emit light of 4000K to 5000K, and a microwave oven LED 61 is attached, and a filter is attached to the white LED of 8000K to 12000K. A device that emits light may be an LED for steam heating 63 that is configured to emit light of 3500K to 4000K by attaching a filter to the LED 62 for oven and the white LED.

(Second Embodiment)
Another example of the heating cooker according to the present invention will be described with reference to the drawings. FIG. 4 is a block diagram showing electrical connection of another example of the heating cooker according to the present invention. In the heating cooker B shown in FIG. 4, the interior lighting 6 is replaced with the interior lighting 6 b and the control section 7 is replaced with the control section 7 b. Except this, it is the same structure as the heating cooker A, and while the substantially same part is attached | subjected the same code | symbol, detailed description of the same part is abbreviate | omitted.

  The interior lighting 6 b includes a white LED 60 that is a light source and a filter 64 that changes the color temperature of light from the light source 60. In addition, as white LED60, pseudo white LED, high color rendering white LED, and RGB white LED can be mentioned as above-mentioned.

  And when the light radiate | emitted from white LED60 permeate | transmits the filter 64, the color temperature of the permeate | transmitted light is changed. The color temperature is as described above. That is, when cooking with the microwave function, light with a color temperature of 4000K to 5000K is irradiated inside the heating chamber Hr of the cooking device B, and when cooking with the oven function, the color temperature is 8000K to 12000K. When light is irradiated and cooking is performed with the steam heating function, light with a color temperature of 3500K to 4000K is irradiated.

  The interior lighting 6b uses the filter 64 to change the white light emitted from the white LED 60 to the color temperature as described above. Therefore, the filter 64 includes a microwave filter 641, an oven filter 642, a steam heating filter 643, and a filter switching unit 644.

  And the control part 7b drives any one of the electromagnetic wave generator 3, the heater 4, and the steam generator 5 based on the input information from the input part 11. FIG. The control unit 7b controls the filter switching unit 644. Based on the instruction from the control unit 7b, the filter switching unit 644 switches the filter 64 so that the color temperature of the light from the white LED 60 corresponds to the heating function being used. In other words, when the microwave function is selected as the heating function, the filter switching unit 644 switches the filter 64 so that light emitted from the white LED 60 passes through the microwave filter 641. Similarly, the filter 64 is switched so that the light from the white LED 60 is transmitted through the oven filter 642 when the oven function is selected, and the steam heating filter 643 when the steam heating function is selected.

  For example, the filter 64 includes a rotatable plate-like member in which a microwave filter 641, an oven filter 642, and a steam heating filter 643 are arranged in the circumferential direction, and is rotated by rotating the plate-like member. A filter that transmits light emitted from the LED 60 may be selected. At this time, the filter switching unit 644 can include an actuator that rotates a plate-like member. Moreover, it is not limited to this structure, It is possible to employ | adopt widely the structure which can switch rapidly the filter which the light radiate | emitted from white LED60 permeate | transmits.

  The microwave oven filter 641 can be omitted from the filter 64 by setting the color temperature of the light emitted from the white LED 60 to 4000K to 5000K. Moreover, the filter 642 for ovens can be abbreviate | omitted by setting the color temperature of the light radiate | emitted from white LED60 to 8000K-12000K.

  In each of the above-described embodiments, an LED is used as a light source. However, the present invention is not limited to this, and a combination of a light source that can emit white light, such as a xenon lamp, and a filter can also be used.

(Third embodiment)
In the heating cookers A and B described above, the interior lighting is adjusted based on the color temperature. Control is facilitated by using the color temperature in this way. On the other hand, in the adjustment based on the color temperature, green cannot be expressed, and the influence of red to orange light that is light from the heater may remain. In view of this, the interior illumination for irradiating light with the same spectral distribution of light emitted from the interior illumination is provided. A cooking device having such a configuration will be described with reference to the drawings. FIG. 5 is a block diagram showing electrical connection of still another example of the heating cooker according to the present invention.

  The heating cooker C shown in FIG. 5 includes an interior illumination 8 instead of the interior illumination 6 and a control unit 7 c instead of the control unit 7. Other than that is the same structure as the heating cooker A, and substantially the same part is attached | subjected with the same code | symbol and detailed description of the substantially same part is abbreviate | omitted.

  In the heating cooker C shown in FIG. 5, the interior lighting 8 is provided with a white LED 80. The white LED 80 includes an R light emitting unit 801 that emits red light (wavelength of about 625 nm to about 740 nm), a G light emitting unit 802 that emits green light (wavelength of about 500 nm to about 565 nm), and blue light ( And a B light emitting portion 803 that emits light having a wavelength of 450 nm to 485 nm. The control unit 7c includes an LED driver circuit (not shown) that adjusts the intensity of light emitted from each of the R light emitting unit 801, the G light emitting unit 802, and the B light emitting unit 803.

  When the article to be heated is heated by the microwave function, the control unit 7c appropriately adjusts the outputs of the R light emission unit 801, the G light emission unit 802, and the B light emission unit 803, and converts it into a daylight white fluorescent lamp used for a kitchen or a table White light with a close spectral distribution is emitted. Accordingly, when the heated article inside the heating chamber Hr is viewed from the window Wd with the door Dr of the heating cooker C closed, the article to be heated in the daytime kitchen or dining table (under the daylight white fluorescent lamp) Looks the same.

  Further, when the article to be heated is heated by the oven function, the heater 4 is red to orange (wavelength is about 577 nm to 740 nm). The control unit 7 c enhances the light emitted from the G light emitting unit 802 and the B light emitting unit 803, and emits light that is a complementary color of the light emitted from the heater 4. Thereby, the influence of red to orange light emitted from the heater 4 can be eliminated or reduced. Further, the control unit 7c suppresses the influence of light from the heater 4, and at the same time, the R light emitting unit 801, the G light emitting unit 802, The light emitted from the B light emitting unit 803 is adjusted.

  Thus, even when the article to be heated is being cooked by the oven function, the article to be heated inside the heating chamber Hr can be removed from the window Dr of the door Dr in the daytime kitchen or dining table (under the white fluorescent lamp). It can be visually recognized like a heated article. Therefore, the cooking state (baked color, burnt color, etc.) can be accurately confirmed without opening the door Dr during cooking. Thereby, it can suppress that the internal temperature of the heating chamber Hr by opening the door Dr in the middle of heating cooking falls rapidly, and it can suppress that cooking fails.

  When cooking with the steam heating function, steam is generated by the steam generator 5, and the steam is injected into the heating chamber Hr of the heating control device C where the article to be heated is arranged. The article to be heated is cooked by being sprayed with steam. At this time, the inside of the heating chamber Hr of the heating cooker C is filled with steam, and it is difficult to visually recognize the article to be heated arranged inside the window Wd of the door Dr. When light with a high color temperature is irradiated to a place where the steam is filled, the light is diffusely reflected by the steam, so visibility is deteriorated. Therefore, it is preferable to irradiate yellow to orange light that easily allows light to pass through even in a space where steam is trapped. Therefore, the interior lighting 8 may include an orange LED 81 that emits orange light in addition to the white LED 80.

  Control part 7c stops irradiation of light from incandescent LED80, and irradiates light from orange LED81, when a steam heating function is chosen. By irradiating the light from the orange LED 81 in this manner, the article to be heated can be visually recognized even inside the heating chamber Hr filled with steam.

  The white LED 80 is configured to include the R light emitting unit 801, the G light emitting unit 802, and the B light emitting unit 803, but is not limited thereto, and may include a light emitting unit that emits a color other than these. . Moreover, the state (spectral distribution) of the illumination outside the cooking device C may be detected, and the interior lighting 8 may be controlled so that the control unit approaches the spectral distribution. By setting it as this structure, the state of the light of the exterior of a heating cooker and the inside of the heating chamber Hr can be match | combined, and it is possible to remove the uncomfortable feeling when seeing the article to be heated inside the heating chamber Hr.

  In each said embodiment, although the microwave oven function, the oven function, and the steam heating function were demonstrated as an example as a heating function of a heating cooker, it is not limited to this. In addition to these, a heating function for heating the article to be heated can be employed. When the heating function is configured to emit light, the control unit may make the internal state of the heating chamber Hr look the same regardless of the operating heating function (for example, in the daytime, under the daylight white fluorescent lamp). The interior lighting can be adjusted so that it looks the same as a kitchen or dining table.

  Furthermore, the cooking device may be provided with a sensor for detecting the external light quantity, and the control unit may adjust the brightness of the interior lighting in accordance with the light quantity detected by the sensor. Thereby, it can suppress that the inside of the heating chamber Hr becomes too dark compared with the outside, or becomes too bright, and it becomes difficult to visually recognize the state of the article to be heated.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to this content. The embodiments of the present invention can be variously modified without departing from the spirit of the invention.

  The cooking device according to the present invention can be used for cooking for heating an article to be heated, such as cooking and heating of food or reheating of cooked food.

A Heating cooker Bd Exterior casing TT Turntable Hr Heating room Dr Door Wd Window 1 Operation unit 11 Input unit 12 Display unit 2 Door open / close detection sensor 3 Radio wave generator 4 Heater 5 Steam generator 6 Interior lighting 61 For microwave oven LED
62 LED for oven
63 LED for steam heating
6b Interior lighting 60 LED
64 Filter 641 Microwave oven filter 642 Oven filter 643 Steam heating filter 7, 7b, 7c Control unit 8 Interior lighting 80 White LED (RGB type)
801 R light emitting unit 802 G light emitting unit 803 B light emitting unit

Claims (10)

A heating chamber for storing the article to be heated;
A radio wave generator for irradiating and heating the article to be heated;
A heater for irradiating and heating the article to be heated with infrared rays;
Illuminating means for irradiating light inside the heating chamber,
The illuminating means irradiates light that has the same characteristics as when the heater is not driven by canceling out the light emitted from the heater when the heater is driven. Cooking cooker.   The illumination means adjusts the emitted light with the color temperature. When the radio wave generator is driven, the illumination means emits light having a color temperature of about 4000 K to about 5000 K, and the heater is driven. The heating cooker according to claim 1, which emits light having a color temperature of about 8000K to about 12000K. A steam generator for generating steam for heating the article to be heated;
The cooking device according to claim 2, wherein the illumination means irradiates light having a color temperature of about 3500K to about 4000K when the steam generator is driven.   The cooking device according to claim 2 or 3, wherein the illumination unit includes a plurality of light sources having different color temperatures of emitted light. The illumination means includes one light source and a plurality of filters that modulate the color temperature of light from the light source,
The cooking device according to claim 2 or 3, wherein light having different color temperatures is emitted by switching the filter. The illuminating means includes a light source having a light emitting part capable of independently emitting red, green, and blue light, respectively.
When the heater is driven, the light in the visible light range emitted from the heater is canceled, and the red, green, and blue colors are distributed so that the spectrum distribution is the same as when the radio wave generator is driven. The cooking device according to claim 1, wherein the light intensity is adjusted. A steam generator for generating steam for heating the article to be heated;
The cooking device according to claim 6, wherein the illumination unit includes a light emitting unit that emits light having a wavelength that is difficult to diffusely reflect in the heating chamber when the steam generator is driven.   The heating cooker according to any one of claims 1 to 7, wherein the illumination unit lowers the luminance of irradiation light when the heater is driven, compared to when the radio wave generator is driven.   The cooking device according to claim 6, wherein the illuminating unit adjusts luminance of light to be irradiated according to an output of the radio wave generator.   The cooking device according to any one of claims 1 to 9, wherein the illumination unit uses an LED as a light source.

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