WO2022259603A1

WO2022259603A1 - Heating cooking device

Info

Publication number: WO2022259603A1
Application number: PCT/JP2022/004105
Authority: WO
Inventors: 康之上甲; 賢治森田; 篤彦漆原; 佳朗三上; 泰章逸見; 紀之大都
Original assignee: 日立グローバルライフソリューションズ株式会社
Priority date: 2021-06-07
Filing date: 2022-02-02
Publication date: 2022-12-15
Also published as: JP2022187423A; CN117157487A

Abstract

This heating cooking device (10) is provided with: a heating chamber (12); an openable/closable door (20) having transparent glass (inside door glass (31)) though which light from the outside is transmitted to the heating chamber; and a camera (50) capable of imaging, through the glass, a region on the interior side of the glass. An electromagnetic wave shielding glass having a higher aperture ratio than a punched metal is used in the glass (inside door glass (31)). The camera (50) is arranged in the interior of the door and facing the heating chamber (12) with the electromagnetic wave shielding glass therebetween.

Description

heating cooker

The present invention relates to a heating cooker.

Conventionally, in heating cookers such as microwave ovens, ovens, and microwave ovens, the food in the heating chamber is photographed in order to heat the food (to be heated) well. As a conventional technique of this kind, a camera fixed in a through hole of an electromagnetic wave shielding plate generally called "punching metal" provided inside the door is used to view at least through the inner door glass provided in the door. A technique has been proposed for photographing the interior of a heating chamber such that one through hole exists within the field of view of a camera (see, for example, Patent Document 1). Here, the "punching metal" is a mesh-like metal plate in which a plurality of through holes are formed. In addition, as a conventional technology of this kind, a through hole is formed in the inner door glass provided in the door, heat-resistant glass is fitted, and a camera provided inside the door photographs the inside of the heating chamber through the heat-resistant glass. A technique for doing so has been proposed (see Patent Document 2, for example).

Japanese Patent Publication No. 2017-527763 JP 2018-109453 A

However, the conventional technology described in Patent Document 1 has a problem in that the field of view of the camera includes a through hole in the punching metal (electromagnetic wave shielding plate), resulting in defects in the field of view of the camera.

In addition, in the prior art described in Patent Document 2, the inner door glass and the heat-resistant lens are separate bodies, so when dirt accumulates on the boundary between the inner door glass and the heat-resistant lens, the field of view of the camera is lost. There was a problem that arises.

In order to achieve the above object, the present invention provides a heating cooker comprising a heating chamber, an openable and closable door having a transparent glass that allows external light to pass through the heating chamber, and the glass through the glass. and a camera capable of photographing an area on the far side.
Other means will be described later.

1 is a perspective view (1) of a heating cooker according to Embodiment 1. FIG. 2 is a perspective view (2) of the heating cooker according to Embodiment 1. FIG. Fig. 2 is a schematic cross-sectional view of the main part of the heating cooker according to Embodiment 1; FIG. 4 is an explanatory diagram (1) of the photographing operation of the heating cooker according to Embodiment 1; FIG. 11 is an explanatory diagram (2) of the photographing operation of the heating cooker according to Embodiment 1; 4 is a flowchart showing a white balance setting operation of the heating cooker according to Embodiment 1. FIG. FIG. 10 is a schematic cross-sectional view of the main part of the heating cooker according to Embodiment 2; FIG. 11 is a schematic cross-sectional view of the main part of the heating cooker according to Embodiment 3; It is explanatory drawing (1) of the imaging|photography operation|movement of the cooking-by-heating appliance which concerns on Embodiment 3. FIG. FIG. 12 is an explanatory diagram (2) of the photographing operation of the heating cooker according to Embodiment 3;

Hereinafter, embodiments of the present invention (hereinafter referred to as "present embodiments") will be described in detail with reference to the drawings. In addition, each figure is only shown roughly to such an extent that the present invention can be fully understood. Accordingly, the present invention is not limited to the illustrated examples only. Moreover, in each figure, the same code|symbol is attached|subjected about a common component and a similar component, and those overlapping description is abbreviate|omitted.

[Embodiment 1]
The prior art described in Patent Document 1 (hereinafter sometimes referred to as "first prior art") and the prior art described in Patent Document 2 (hereinafter referred to as "second prior art") ) has the following problems. Embodiment 1 also intends to provide a heating cooker that solves the following problems.

(1) In the first prior art described in Patent Document 1, since the field of view of the camera includes the through holes of the punching metal (electromagnetic wave shielding plate), when dirt accumulates in the through holes of the punching metal (electromagnetic wave shielding plate) Also, there is a problem that the field of view of the camera is lost. In addition, in the first prior art, since the through holes of the punching metal (electromagnetic wave shielding plate) are reflected in the photographed image, the color tone of the photographed image changes, so that the food stored in the heating chamber can be photographed satisfactorily. The problem was that it could be blocked.

(2) In addition, according to the second prior art described in Patent Document 2, if the area of the heat-resistant lens is increased, the area of the inner door glass becomes narrower, and the visibility of the inside of the heating chamber from the user decreases. I had a problem. In addition, the second prior art has a problem that, when the through hole provided in the inner door glass is made larger, the through hole reduces the electromagnetic wave shielding performance. In addition, in the second conventional technology, ambient light (external light) that enters through the outer door glass provided on the door is reflected by the heat-resistant lens, and the reflected light can impair the visibility of the inside of the heating chamber for the user. There was a problem that there was a nature. In addition, in the second prior art, the ambient light (external light) coming through the outer door glass is reflected on the heat-resistant glass, causing a change in the color tone of the photographed image, which makes the food stored in the heating chamber look good. There was a problem that shooting could be hindered.

<Composition of the heating cooker>
Hereinafter, the configuration of the heating cooker 10 according to the first embodiment will be described with reference to FIGS. 1 to 3. FIG. 1 and 2 are perspective views of a heating cooker 10 according to Embodiment 1, respectively. FIG. 1 shows the configuration of the heating cooker 10 with the door closed, and FIG. 2 shows the configuration of the heating cooker 10 with the door open. FIG. 3 is a schematic cross-sectional view of the main part of the heating cooker 10. As shown in FIG. Here, the heating cooker 10 is described as being a microwave oven, but the heating cooker 10 may be in the form of an oven, an oven range, or the like.

As shown in FIGS. 1 and 2, the heating cooker 10 according to the first embodiment includes a heating chamber 12 provided inside a housing 11 and an opening provided on the front side of the heating chamber 12. a door 20 for opening and closing.

The heating chamber 12 is a component that heats the food material (to-be-heated material) housed inside with a heat source 13 provided around it. In this embodiment, the heating source 13 is configured as an electromagnetic wave irradiation means for irradiating the food (object to be heated) with electromagnetic waves. As shown in FIG. 2, the heating chamber 12 is surrounded by a top surface 16a, a left surface 16b, a right surface 16c, a rear surface 16d (back wall surface), and a bottom surface 16e, and the front side is an opening. .

The door 20 is supported so that it can be opened and closed by a rotation support 15 provided at the bottom of the front side of the housing 11 . The door 20 opens the heating chamber 12 by falling forward (see FIG. 2), and closes the heating chamber 12 by standing up (see FIG. 1). A handle 25 that is gripped by the user is provided on the upper portion of the door 20 . Further, the door 20 is provided with a door glass 30 for allowing the user to visually recognize the interior of the heating chamber 12 .

As shown in FIG. 3 , the door glass 30 has an inner door glass 31 (glass) arranged inside the door 20 and an outer door glass 32 arranged outside the door 20 . The inner door glass 31 is arranged such that the inside surface 31 a faces the heating chamber 12 and the outside surface 31 b faces the interior space of the door 20 . The outside door glass 32 is arranged so that the inside surface 32a faces the interior space of the door 20 and the outside surface 32b faces the outside.

The inner door glass 31 is fixed to the door base 21 arranged inside the door 20 . The door base 21 has a choke structure so that the electromagnetic waves generated by the heating source 13 can be efficiently attenuated.

The heating cooker 10 uses electromagnetic wave shielding glass as the inner door glass 31 so that the electromagnetic waves generated by the heating source 13 can be efficiently attenuated. The electromagnetic wave shielding glass is glass in which a metal mesh 42 is integrated with tempered glass 41 . The metal mesh 42 is a metal material for attenuating electromagnetic waves, and is formed in a mesh shape. The metal mesh 42 is integrated with the tempered glass 41 by bonding to the tempered glass 41 with an adhesive (not shown) or by plating.

The opening ratio of the metal mesh 42 is higher than the opening ratio of the punching metal used in the first prior art (approximately 50% or less), for example, about 78%. Such a metal mesh 42 looks transparent (almost transparent) because the lines forming the mesh are thin. The inner door glass 31 (glass) provided with such a metal mesh 42 also appears transparent (almost transparent).

In the illustrated example, the inner door glass 31 has a configuration in which a metal mesh 42 is arranged between a tempered glass 41 and a restraining glass 43, that is, has a configuration with multiple layers of glass. The tempered glass 41 and the restraining glass 43 have the same thickness, or the tempered glass 41 is thicker than the restraining glass 43 .

However, the inner door glass 31 can also have a configuration in which the metal mesh 42 is joined to the tempered glass 41 and the restraining glass 43 is eliminated, that is, it has only one layer (single-phase) glass.

Note that the cooking device 10 may use electromagnetic wave shielding glass not only for the inner door glass 31 but also for the outer door glass 32 .

The inner door glass 31 and the outer door glass 32 are transparent so that the inside of the heating chamber 12 can be seen from the outside. Therefore, the user can clearly see the inside of the heating chamber 12 through the inner door glass 31 and the outer door glass 32 during cooking or the like.

The heating cooker 10 is equipped with a camera 50 inside the door 20 for photographing food (object to be heated). The camera 50 is fixed to the frame 24 arranged on the upper edge of the door frame 23 of the door 20 with the lens optical axis 51 inclined downward from the horizontal. Camera 50 is surrounded by door base 21 , frame 24 of door frame 23 , shielding plate 61 for shielding ambient light (outside light), and inner door glass 31 . The door base 21 , the frame 24 of the door frame 23 , the shielding plate 61 and the inner door glass 31 shield ambient light (outside light) to prevent ambient light (outside light) from entering the field of view of the camera 50 . An ambient light shielding portion 60 is formed to block the light.

The shielding plate 61 is arranged parallel to the lens optical axis 51 of the camera 50 or inclined downward from the lens optical axis 51 of the camera 50 . Thereby, the cooker 10 secures the field of view of the camera 50 .

A photographing hole 22 is provided between the door base 21 and the shielding plate 61 for viewing (photographing) the heating chamber 12 from the inner door glass 31 . The camera 50 photographs the interior of the heating chamber 12 through the transparent electromagnetic shielding glass used as the inner door glass 31 . A portion of the inner door glass 31 facing the camera 50 functions as a camera protection portion 31 c that protects the camera 50 . The camera protection portion 31c also functions as a viewing window for the user to look inside the heating chamber 12 . Since the camera protection portion 31c is a portion of the inner door glass 31, even if the camera protection portion 31c is stained with oil, steam, or other deposits, the deposits can be easily wiped off. Thereby, the cooker 10 can easily secure a good field of view of the camera 50 . The inner door glass 31 has approximately the same dimensions as the outer door glass 32, except for the support structure.

The ambient light shielding part 60 prevents ambient light (external light) coming through the outer door glass 32 from reflecting off the outside surface 31b of the inner door glass 31, entering the photographing part of the camera 50, and being reflected in the photographed image. To prevent. The ambient light shielding part 60 also serves as an air passage for cooling the camera 50 . The shielding plate 61 of the ambient light shielding portion 60 is configured such that the end facing the refrigerator outer surface 31b of the inner door glass 31 is arranged inside the refrigerator relative to the camera 50 . A gap 62 is formed between the shielding plate 61 and the outer surface 31b of the inner door glass 31 to prevent ambient light (outside light) from entering. The gap 62 prevents the shielding plate 61 from hitting the outer surface 31b of the inner door glass 31 and damaging the outer surface 31b of the inner door glass 31. - 特許庁Instead of forming a gap 62 between the shielding plate 61 and the outside surface 31b of the inner door glass 31, the heating cooker 10 separates the shielding plate 61 from the inner door glass 31 via an elastically deformable sealing material. You may make it contact|abut on the chamber|chamber outside surface 31b. It is preferable to prevent internal reflection and stray light by painting the surface of the ambient light shielding portion 60 facing the camera 50 matte black.

The heating cooker 10 has an operation board 28 under the door 20 . The operation board 28 is a board in which an operation unit for receiving user's operations is integrated. The operation board 28 is electrically connected to a control board 29 arranged inside the housing 11 (see FIG. 1). The control board 29 is a board that controls the operation of the heat source 13, the camera 50, and the like. The control board 29 is electrically connected to the heat source 13 and the camera 50 . The control board 29 has a control section 29 a that controls the overall operation of the heating cooker 10 and an ambient light correction section 29 b that performs color correction of the image captured by the camera 50 . The control unit 29a and the environmental term correction unit 29b can be configured by ASIC (Application Specific Integrated Circuit) or FPGA (Field Programmable Gate Array).

<Operation of heating cooker>
The operation of the heating cooker 10 will be described below with reference to FIGS. 4A, 4B, and 5. FIG. 4A and 4B are explanatory diagrams of the photographing operation of the cooking device 10, respectively. 4A shows the operation of the heating cooker 10 when acquiring (shooting) ambient light (light of the outside world 99), and FIG. 4B shows the operation of the heating cooker 10 when shooting the inside of the heating chamber 12. shows the action. FIG. 5 is a flowchart showing the white balance setting operation of the heating cooker 10. As shown in FIG.

As shown in FIG. 4A, the cooker 10 acquires (photographs) ambient light (light of the outside world 99) with the camera 50 with the door 20 open when setting the white balance. At this time, the ambient light correction unit 29b of the heating cooker 10 calculates a white balance setting value based on the acquired (photographed) ambient light (light of the outside world 99), and sets the calculated white balance setting value to Stored in a storage unit (not shown).

Next, as shown in FIG. 4B, the cooker 10 captures an image of the interior of the heating chamber 12 with the camera 50 with the door 20 closed. At this time, the heating cooker 10 adjusts the white balance of the photographed image inside the heating chamber 12 based on the set value of the white balance stored in the storage unit (not shown).

FIG. 5 shows the white balance setting operation of such a heating cooker 10. FIG. Here, as shown in FIG. 4A, it is assumed that the door 20 is closed at the initial stage.

As shown in FIG. 5, first, the ambient light correction unit 29b of the heating cooker 10 performs white balance initial setting (step S105). Next, the ambient light correction unit 29b of the heating cooker 10 determines whether or not to automatically set the white balance (whether to set manually) (step S110).

When it is determined in step S110 that the automatic setting is to be performed ("Yes"), the control unit 29a of the heating cooker 10 waits until it is determined that the door 20 is opened (step S115), When it is determined that the door 20 is opened (see FIG. 4B) (step S120), the camera 50 takes an image of the outside world 99 (see FIG. 4B). Thereby, the cooking device 10 acquires (photographs) ambient light (light of the outside world 99) (step S125). After step S125, the ambient light correction unit 29b of the cooker 10 automatically sets the white balance based on the acquired (photographed) ambient light (light of the outside world 99) (step S130). In this case, the ambient light correction unit 29b of the heating cooker 10 calculates the white balance setting value based on the acquired (photographed) ambient light (light of the outside world 99), and calculates the calculated white balance setting value. is stored in a storage unit (not shown).

On the other hand, if it is determined in step S110 that the automatic setting is not to be performed ("No"), the controller 29a of the heating cooker 10 manually sets the white balance (step S135). In this case, the ambient light correction unit 29b of the heating cooker 10 receives the white balance set value input by the user through the operation unit provided on the operation board 28, and stores the white balance set value in a storage unit (not shown). memorize to

After step S130 or step S135, the controller 29a of the heating cooker 10 takes an image of the inside of the heating chamber 12 with the camera 50 when the user instructs to cook the food (object to be heated) stored in the heating chamber 12. (Step S140).

After step S140, the ambient light correction unit 29b of the heating cooker 10 performs image processing on the photographed image inside the heating chamber 12, and stores the processed image in a storage unit (not shown) (step S140). At this time, the ambient light correction unit 29b of the heating cooker 10 performs image processing on the photographed image inside the heating chamber 12, and adjusts the set value of the white balance stored in the storage unit (not shown) in step S130 or step S135. The white balance is adjusted for the photographed image inside the heating chamber 12 based on .

With such a configuration, the heating cooker 10 is configured so that the camera 50 can rotate with respect to the heating chamber 12 . Specifically, the cooker 10 is configured such that when the door 20 is rotated around the rotation support portion 15 when the door 20 is opened, the camera 50 rotates together with the door 20. there is In such a heating cooker 10, when the door 20 is opened, the lens optical axis 51 of the camera 50 passes through the outside (outside world), so ambient light (light of the outside world 99) can be directly acquired (photographed). can be done. Then, the heating cooker 10 adjusts the white balance of the image inside the heating chamber 12 captured by the camera 50 based on the acquired (captured) ambient light (light of the outside world 99). , the color correction of the photographed image can be reliably performed.

<Main features of the heating cooker>
(1) As shown in FIG. 3, the heating cooker 10 according to the first embodiment includes a heating chamber 12 and a transparent glass (inner door glass 31) that transmits ambient light (external light) to the heating chamber 12. and a camera 50 capable of photographing an area behind the glass through the glass.

Unlike the above-described first prior art, the heat cooker 10 according to the first embodiment does not include a through hole of the punching metal (electromagnetic wave shielding plate) in the field of view of the camera, so that the field of view of the camera 50 is not defective. The occurrence can be suppressed. In addition, unlike the first conventional technology, the heating cooker 10 according to the first embodiment does not accumulate dirt in the through holes of the punching metal (electromagnetic wave shielding plate). can suppress the occurrence of defects. In addition, unlike the above-described first prior art, the heating cooker 10 according to the first embodiment does not reflect the through holes of the punching metal (electromagnetic wave shielding plate) in the captured image, so that the captured image changes in color tone. As a result, it is possible to suppress the impediment of good photographing of the foodstuffs stored in the heating chamber.

Further, in the heating cooker 10 according to the first embodiment, unlike the above-described second prior art, dirt does not accumulate on the boundary between the inner door glass and the heat-resistant lens. can be suppressed. In addition, unlike the second conventional technology, the heating cooker 10 according to the first embodiment does not have a heat-resistant lens area. , it is possible to eliminate the deterioration of the visibility from the user. Further, unlike the second conventional technology, the heating cooker 10 according to the first embodiment does not have a through hole in the inner door glass. be able to. In addition, unlike the above-described second prior art, the heating cooker 10 according to the first embodiment does not reflect ambient light (external light) coming through the outer door glass from the heat-resistant lens. Impairment of the visibility of the inside of the heating chamber from the user can be eliminated. In addition, unlike the above-described second prior art, the heating cooker 10 according to the first embodiment reflects the ambient light (external light) that enters through the outer door glass and is reflected in the heat-resistant glass, resulting in a change in the color tone of the captured image. It is possible to eliminate the occurrence of .

In addition, the heating cooker 10 according to the first embodiment is a simple heating device in which the glass (inner door glass 31) does not have the punching metal (electromagnetic wave shielding plate) of the first prior art or the heat-resistant lens of the second prior art. configuration. In the heating cooker 10 according to the first embodiment, even if the glass (inner door glass 31) is stained with oil, steam, or other deposits, the deposits can be easily wiped off. can be done. Thereby, the heating cooker 10 according to the first embodiment can easily secure a good field of view of the camera 50 even in a use environment with a lot of dirt such as oil and steam.

(2) As shown in FIG. 3, the heating cooker 10 according to the first embodiment has a heating source 13 that irradiates and heats the food (object to be heated) housed in the heating chamber 12 with electromagnetic waves, As the glass (inner door glass 31), transparent electromagnetic wave shielding glass having a higher opening ratio than punching metal is used, and the camera 50 is positioned inside the door 20 facing the heating chamber 12 with the electromagnetic wave shielding glass interposed therebetween. are placed. Note that the aperture ratio of the punching metal is approximately 50% or less. The electromagnetic wave shielding glass used in the heating cooker 10 according to the first embodiment preferably has an aperture ratio of 70% or more, more preferably 70% or more, so that the lines of the metal mesh 42 are thinned and the entire glass looks transparent. should have an aperture ratio of about 78% or more.

The heating cooker 10 according to the first embodiment can achieve both improved visibility of the foodstuffs (objects to be heated) stored inside the heating chamber 12 and improved electromagnetic wave shielding properties.

(3) As shown in FIG. 3, the camera 50 of the heating cooker 10 according to Embodiment 1 is fixed to the frame at the upper edge of the door 20 with the lens optical axis 51 inclined downward from the horizontal. It is

Such a heating cooker 10 according to Embodiment 1 can satisfactorily photograph the foodstuffs (objects to be heated) housed inside the heating chamber 12 .

(4) As shown in FIG. 3, the camera 50 of the heating cooker 10 according to the first embodiment is surrounded by a shielding plate 61 that shields ambient light (outside light) and glass (inner door glass 31). ing.

Such a heating cooker 10 according to Embodiment 1 can prevent ambient light (external light) from being reflected in a captured image.

(5) As shown in FIG. 3, the shielding plate 61 of the heating cooker 10 according to Embodiment 1 is parallel to the lens optical axis 51 of the camera 50, or downward from the lens optical axis 51 of the camera 50. A gap 62 is provided between the shielding plate 61 and the glass (inner door glass 31).

In the heating cooker 10 according to the first embodiment, the gap 62 can prevent the shielding plate 61 from colliding with the glass (inner door glass 31). It can prevent scratches.

(6) As shown in FIG. 3, the heating cooker 10 according to the first embodiment includes an environmental light correction unit 29b that suppresses the influence of environmental light (external light) on the image captured by the camera 50. Prepare.

The heating cooker 10 according to the present embodiment 1 as described above does not cause changes in the color tone of a photographed image due to the influence of ambient light (external light) and unintended reflection of ambient light (external light) in the captured image. etc. can be suppressed.

(7) As shown in FIG. 5, the ambient light correcting unit 29b of the heating cooker 10 according to the first embodiment is configured so that the heating chamber 12 photographed by the camera 50 with the door 20 opened (see FIG. 4B). Based on the image of the exterior of the heating chamber 12, the white balance is adjusted for the image of the interior of the heating chamber 12 captured by the camera 50 with the door 20 closed (see FIG. 4A).

Such a heating cooker 10 according to the first embodiment directly receives environmental light (external light) with the door 20 opened (see FIG. 4B), and the food stored inside the heating chamber 12 It can be used to adjust the white balance of an image captured when heating (the object to be heated).

As described above, according to the heating cooker 10 according to Embodiment 1, it is possible to suppress the occurrence of defects in the field of view of the camera 50 .

[Embodiment 2]
The heating cooker 10 (see FIG. 3) according to Embodiment 1 includes a mechanism for cooling the camera 50 in the ambient light shielding portion 60 . On the other hand, in Embodiment 2, a heating cooker 10</b>A having an air passage for cooling the camera 50 between the inner door glass 31 and the outer door glass 32 is provided.

The configuration of the heating cooker 10A according to Embodiment 2 will be described below with reference to FIG. FIG. 6 is a schematic cross-sectional view of the main part of the heating cooker 10A according to the second embodiment.

As shown in FIG. 6, the heating cooker 10A according to Embodiment 2 differs from the heating cooker 10 (see FIG. 3) according to Embodiment 1 in the following points.
(1) The heating cooker 10A includes a cooling air passage 26 inside the door 20 through which cooling air for cooling the operation board 28 passes.
(2) In the cooking device 10A, instead of the ambient light shielding portion 60 (see FIG. 3), a shielding plate 61a shorter than the shielding plate 61 (see FIG. 3) is arranged below the camera 50. The point that it has the environmental light shielding part 60a which exposed the back surface of this to the outside.
(3) The rear surface of the camera 50 faces the cooling air passage 26 .

The camera 50 blocks part of the ambient light shielding part 60a (the part facing the cooling air passage 26). In other words, the ambient light shielding portion 60 a has a space on the side of the cooling air passage 26 that is blocked by the camera 50 .

The cooling air passage 26 is provided between the inner door glass 31 and the outer door glass 32, communicates with the space in which the operation board 28 is provided through the air intake hole 27a, and is provided near the camera 50. It communicates with the space (outside world) outside the cooling air passage 26 through the exhaust hole 27b.

After cooling the operation board 28 with the cooling air, the heating cooker 10A directs the cooling air to the cooling air passage 26 to cool the camera 50 . 10 A of such heating cookers can cool the camera 50 efficiently, Therefore The stability of the operation|movement of the camera 50 can be improved. Moreover, since the cooker 10A cools the camera 50 with the cooling air that cools the operation board 28, there is no need to provide a mechanism for generating a dedicated cooling air for cooling the camera 50. FIG. Such a cooking device 10A can efficiently cool the camera 50 without increasing its size.

As described above, according to the heating cooker 10A according to the second embodiment, like the heating cooker 10 according to the first embodiment, it is possible to suppress the loss of the field of view of the camera 50 from occurring.
Moreover, according to the heating cooker 10A according to the second embodiment, compared to the heating cooker 10 according to the first embodiment, the camera 50 can be efficiently cooled with the cooling air for cooling the operation board 28. The operational stability of the camera 50 can be improved.

[Embodiment 3]
The

cookers

10 and 10A (see FIGS. 3 and 6) according to Embodiments 1 and 2 are provided with a camera 50 inside the door 20. As shown in FIG. In contrast, in Embodiment 3, a heating cooker 10B having a camera 50 inside the heating chamber 12 is provided.

In addition, the heating cooker 10B according to the third embodiment solves the problem of the first conventional technology described in Patent Document 1 and the problem of the second conventional technology described in Patent Document 2 described in the first embodiment. is also intended.

The configuration of the heating cooker 10B according to Embodiment 3 will be described below with reference to FIG. FIG. 7 is a schematic cross-sectional view of the main part of the heating cooker 10B according to the third embodiment.

As shown in FIG. 7, the heating cooker 10B according to the third embodiment is not inside the door 20, compared with the

heating cookers

10 and 10A (see FIGS. 3 and 6) according to other embodiments. The difference is that the camera 50 is arranged inside the heating chamber 12 .

The heating cooker 10B according to the present embodiment uses, as the glass (inner door glass 31), transparent electromagnetic shielding glass with a higher aperture ratio than punching metal (approximately 50% or less). The camera 50 is arranged on one or more of the top surface 16a, the left surface 16b, the right surface 16c, the rear surface 16d, and the bottom surface 16e of the heating chamber 12. In this embodiment, the camera 50 is arranged on the top surface 16a of the heating chamber 12 with the lens optical axis 51 inclined downward from the horizontal. In addition to the inside of the heating chamber 12, it is possible to photograph the outside of the heating cooker 10 through the glass (inner door glass 31).

The heating cooker 10B includes an arc-shaped observation window 54 and an arc-shaped shutter 55 around the camera 50 . The camera 50 and the shutter 55 are rotated around the same center of rotation 53 by the rotation unit 52 .

The cooker 10B may have a configuration in which the camera 50 rotates (see arrow A52) so that the lens optical axis 51 switches between the inside direction of the heating chamber 12 and the outside direction of the heating chamber 12.

In this configuration, when the white balance is set, the cooker 10B obtains (photographs) ambient light (light of the outside world 99) by the camera 50 with the lens optical axis 51 of the camera 50 directed toward the outside of the heating chamber 12. )do. At this time, the ambient light correction unit 29b of the heating cooker 10B calculates a white balance setting value based on the acquired (photographed) ambient light (light of the outside world 99), and sets the calculated white balance setting value to Stored in a storage unit (not shown). Next, the cooker 10B photographs the inside of the heating chamber 12 with the camera 50 with the lens optical axis 51 of the camera 50 directed toward the interior of the heating chamber 12 . At this time, the ambient light correction unit 29b of the heating cooker 10B adjusts the white balance of the photographed image inside the heating chamber 12 based on the set value of the white balance stored in the storage unit (not shown). .

In this configuration, when the camera 50 is rotated and positioned so that the optical axis of the camera 50 intersects with one of the inner walls of the heating chamber 12, the heating chamber 12 also serves as an ambient light shielding section. Further, the camera 50 is configured to capture an image including an area behind the door glass 30 through the door glass 30 . Heating cooker 10B can acquire (image) ambient light without opening door 20, as shown in FIG. You can adjust the balance.

In addition, as shown in FIGS. 8A and 8B, the heating cooker 10B acquires (photographs) ambient light (light of the outside world 99) and photographs the inside of the heating chamber 12 by opening and closing the door 20. It may be configured to be similar. 8A and 8B are explanatory diagrams of the photographing operation of the heating cooker 10B. FIG. 8A shows the operation of the heating cooker 10B when acquiring (shooting) ambient light (light of the outside world 99), and FIG. 8B shows the operation of the heating cooker 10B when shooting the inside of the heating chamber 12. shows the action.

In this configuration, as shown in FIG. 8A, the cooker 10B obtains (photographs) ambient light (light of the outside world 99) with the camera 50 with the door 20 open when setting the white balance. At this time, the ambient light correction unit 29b of the heating cooker 10B calculates a white balance setting value based on the acquired (photographed) ambient light (light of the outside world 99), and sets the calculated white balance setting value to Stored in a storage unit (not shown).

Next, as shown in FIG. 8B, the cooker 10B captures an image of the interior of the heating chamber 12 with the camera 50 with the door 20 closed. At this time, the ambient light correction unit 29b of the heating cooker 10B adjusts the white balance of the photographed image inside the heating chamber 12 based on the set value of the white balance stored in the storage unit (not shown). .

Even with this configuration, the heating chamber 12 has a configuration that also serves as an ambient light shielding section. Further, the camera 50 is configured to capture an image including an area behind the door glass 30 through the door glass 30 . Heating cooker 10B can directly acquire (shoot) ambient light by opening door 20 even when door 20 has a low opening ratio such as perforated metal, and heating is performed based on the acquired ambient light. The white balance can be adjusted for the photographed image inside the warehouse 12 . If the opening ratio of the door 20 is high like electromagnetic shielding glass, ambient light can be directly acquired (photographed) with the door 20 closed.

Note that the heating cooker 10B, like the

heating cookers

10 and 10A (see FIGS. 3 and 6) according to Embodiments 1 and 2, has a white balance input by the user through an operation unit provided on the operation board 28. may be accepted. In this case, the heating cooker 10B stores the accepted white balance set value in a storage unit (not shown), similarly to the

heating cookers

10 and 10A according to the first and second embodiments (see FIGS. 3 and 6). Based on the set value of the white balance stored in a storage unit (not shown), the photographed image inside the heating chamber 12 is adjusted in white balance.

A heating cooker 10B according to the third embodiment is different from the first conventional technology and the second conventional technology described in the first embodiment, and a camera 50 arranged inside the heating chamber 12 detects food (to be heated). It is configured to shoot directly. With such a cooking device 10B, the visual field of the camera 50 is not lost, and the occurrence of the visual field loss of the camera 50 can be suppressed. In addition, the heating cooker 10B can prevent a change in the color tone of the photographed image from hindering good photographing of the foodstuffs stored in the heating chamber.

In addition, the cooking device 10B can use the camera 50 for the purpose of detecting the putting in and out of foodstuffs (objects to be heated) in the heating chamber 12. Furthermore, when the cooker 10B acquires (photographs) ambient light outside the refrigerator (light of the outside world 99), the camera 50 is used to improve security outside the refrigerator, monitor the exterior, and prevent stains on the door glass 30. It can be used for applications such as detection. In addition, the "security outside the refrigerator" means, for example, surveillance of a person who enters the room in which the heating cooker 10B is installed, and surveillance of combustible items such as a gas stove. Also, "watching outside the refrigerator" means, for example, watching a child, pet, or the like in the room where the heating cooker 10B is installed.

As described above, according to the heating cooker 10B according to the third embodiment, it is possible to suppress the loss of the field of view of the camera 50, similarly to the

heating cookers

10 and 10A according to the other embodiments.
Moreover, according to the heating cooker 10B according to the third embodiment, the camera 50 can be used to put in and take out the food material (the object to be heated) in the heating chamber 12 compared to the

heating cookers

10 and 10A according to the other embodiments. It can also be used for detection, improvement of security outside the refrigerator, monitoring outside the refrigerator, detection of stains on the door glass 30, and the like.

The present invention is not limited to the above-described embodiments, and includes various modifications. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the described configurations. Also, part of the configuration of the embodiment can be replaced with another configuration, and it is also possible to add another configuration to the configuration of the embodiment. Moreover, it is possible to add, delete, or replace a part of each configuration with another configuration.

10, 10A, 10B heating cooker 11 housing 12 heating chamber 13 heating source 14 opening 15 rotation support 16a top surface 16b left surface 16c right surface 16d rear surface (back wall surface)
16e bottom surface 20 door 21 door base 22 photographing hole 23 door frame 24 frame 25 handle 26 cooling air passage

27a intake hole

27a exhaust hole 28 operation board 29 control board 29a control section 29b ambient light correction section 30 door glass 31 inner door glass (glass )
31a inner surface of the refrigerator 31b outer surface of the refrigerator 31c camera protection part 32 outer door glass 32a inner surface of the refrigerator 32b outer surface of the refrigerator 41 tempered glass 42 metal mesh 43 restraining glass 50 camera 51 lens optical axis 52 rotation unit 53 rotation center 54 observation window 55

shutter

60, 60a Ambient

light shielding part

61, 61a Shielding plate 62 Gap 99 Outside world

Claims

a heating chamber;
an openable and closable door having transparent glass that transmits external light to the heating chamber;
and a camera capable of photographing an area behind the glass through the glass.
In the heating cooker according to claim 1,
having a heating source that generates electromagnetic waves,
As the glass, transparent electromagnetic wave shielding glass having a higher aperture ratio than punching metal is used,
The heating cooker, wherein the camera is arranged inside the door so as to face the heating chamber with the electromagnetic wave shielding glass interposed therebetween.
In the heating cooker according to claim 1 or claim 2,
The heating cooker, wherein the camera is fixed to the frame at the upper edge of the door with the lens optical axis inclined downward from the horizontal.
In the heating cooker according to claim 1,
The heating cooker, wherein the camera is surrounded by a shielding plate that shields ambient light and the glass.
In the heating cooker according to claim 4,
The shielding plate is arranged parallel to the lens optical axis of the camera or inclined downward from the lens optical axis of the camera,
A heating cooker, wherein a gap is provided between the shielding plate and the glass.
In the heating cooker according to claim 1,
A cooling air passage through which cooling air passes is provided inside the door,
The heating cooker, wherein the rear surface of the camera faces the cooling air passage.
In the heating cooker according to claim 1,
The camera is arranged on one or more of the top surface, left surface, right surface, rear surface, and bottom surface of the heating chamber, and in addition to the inside of the heating chamber, the heating cooker through the glass A heating cooker capable of photographing the outside.
In the heating cooker according to claim 7,
The heating cooker, wherein the camera is rotatable.
In the heating cooker according to claim 8,
The heating cooker, wherein the camera rotates such that the lens optical axis is switched between an internal direction of the heating chamber and an external direction of the heating chamber.
In the heating cooker according to claim 1,
A heating cooker comprising an ambient light correction unit that performs color correction of an image captured by the camera.
In the heating cooker according to claim 10,
The ambient light correction unit adjusts the white balance of an image of the inside of the heating chamber captured by the camera with the door closed, based on the ambient light captured by the camera. A heating cooker characterized by: