JP6508625B2 - Cooker - Google Patents

Description

  The present invention relates to a cooker for cooking food and the like.

  In a heating cooker, in order to be able to confirm the condition etc. of the food in a heating chamber, there are some which provided the imaging part which images a heating chamber (for example, refer patent document 1). In Patent Document 1, in order to prevent the imaging unit from being broken due to high temperature in the heating chamber, the imaging unit is disposed outside the heating chamber, in particular, outside the door.

JP 2008-286466 A

  In the heating chamber in which the heating cooker is prepared, the environment is greatly changed including the conditions such as temperature and humidity. In particular, when the food or the like is heated, the water in the food evaporates to generate steam, which often fills the heating chamber.

  Nowadays, various functions are added to the heating cooker. For example, various devices and the like have been developed that can be used for steaming and cooking by using a steam generator that generates steam, and to improve the efficiency of a heater and a microwave supply unit. Such a configuration tends to generate more steam from food. As the amount of vapor in the heating chamber increases, the permeability in the heating chamber deteriorates.

  If this is applied to the configuration provided with the imaging unit as described in Document 1, the permeability in the heating chamber may be reduced by the steam, and the visibility by the imaging unit may be deteriorated.

  That is, in the heating cooker provided with the imaging unit, it can be said that there is still room for improvement from the viewpoint of improving the visibility by the imaging unit.

  Therefore, an object of the present invention is to provide a heating cooker capable of improving the visibility of an imaging unit in a configuration including the imaging unit.

  In order to achieve the above object, the present invention is configured as follows.

According to one aspect of the invention, a heating chamber for storing food,
Through holes formed in the side wall surface of the heating chamber,
An imaging unit for imaging the heating chamber via the through hole;
A heating cooker is provided, which is provided on a side wall surface side in which a through hole is formed or on an upper wall side of a heating chamber, and which emits a light to the heating chamber.

  ADVANTAGE OF THE INVENTION The heating cooker of this invention can improve the visibility by an imaging part.

Front view of the heating cooker according to the first embodiment Side cross-sectional view of the heating cooker according to the first embodiment Front sectional view of the heating cooker according to the first embodiment Front enlarged sectional view of the heating cooker according to the first embodiment Front enlarged sectional view of a heating cooker according to a modification of the first embodiment Front enlarged sectional view of a heating cooker according to a modification of the first embodiment Front sectional view of a heating cooker according to a modification of the first embodiment

  According to a first aspect of the present invention, there is provided a heating chamber for storing food, a through hole formed in a side wall surface of the heating chamber, an imaging unit for imaging the heating chamber through the through hole, and a side wall surface side where the through hole is formed. Or it is a cooking-by-heating machine provided with the 1st lighting part provided in the upper wall side of a heating chamber and irradiating light to a heating chamber. Thereby, in the configuration provided with the imaging unit, by further including the first illumination unit that illuminates the heating chamber, the visibility by the imaging unit can be obtained even when the permeability in the heating chamber is reduced by the vapor in the heating chamber. It can be improved. Moreover, since the first illumination unit is provided on the side wall surface side where the through hole is formed or the upper wall side of the heating chamber, the imaging unit and the first illumination unit do not have a backlit relationship, and the imaging unit Can further improve the visibility.

  In a second aspect based on the first aspect, the first illumination unit is provided on the side wall surface side of the heating chamber in which the through hole is formed. Here, the mist in which the vapor is condensed has a particle diameter of 1 to 100 μm, which is geometrically scattered from Mie scattering, and the forward scattering is large. For this reason, by providing the first illumination unit and the imaging unit on the side wall surface side of the same heating chamber, it is possible to obtain a relationship of forward light, prevent scattering, and further improve the visibility by the imaging unit. it can.

  In a third invention according to the second invention, the difference between the irradiation angle of the first illumination unit and the imaging angle of the imaging unit is set within the range of 0 ° -25 °. By setting the angles of the first illumination unit and the imaging unit to be substantially the same, it is possible to obtain a more accurate relationship of the forward light, and therefore, the visibility of the imaging unit can be further improved.

  According to a fourth aspect of the present invention, in the second or third aspect, the second illumination section provided on the side wall surface side of the heating chamber facing the first illumination section, the first illumination section, and the second illumination A control unit configured to control light emission by the unit, and the control unit controls the imaging unit and the second illumination unit not to emit light by the second illumination unit when performing imaging by the imaging unit . Accordingly, by stopping the second illumination unit disposed on the side facing the wall surface on the side where the imaging unit is disposed and performing imaging, it is possible to prevent backlighting of the imaging unit. The visibility by the imaging unit can be further improved.

  According to a fifth invention, in any one of the first to fourth inventions, a blocking unit for blocking light emitted by the first lighting unit is further provided between the first lighting unit and the imaging unit. Thereby, it is possible to prevent the light of the first illumination unit from being directly irradiated to the imaging unit, and thus the visibility of the imaging unit can be further improved.

  In a sixth invention according to any one of the first to fifth inventions, the first illumination unit emits light having a wavelength of 380 nm to 780 nm. Thus, by setting the light from the first illumination unit to a wavelength in the visible light range, the heating chamber can be more clearly illuminated, and the visibility of the imaging unit can be improved.

  In a seventh aspect according to the sixth aspect, the first illumination unit emits substantially parallel light. Thereby, scattering can be prevented and the visibility of the imaging unit can be improved by making the collimated light substantially parallel light with an LED or the like having a directivity characteristic θ1 / 2 of 60 ° or less.

  In an eighth aspect according to the sixth or seventh aspect, the first illumination unit emits light having a wavelength of 550 nm to 780 nm. Thus, by setting the wavelength of light by the first illumination unit to a long wavelength, the red light is emitted, and in the case of setting the light wavelength to a low wavelength and irradiating blue light. In comparison, the heating chamber can be illuminated more clearly, and the visibility of the imaging unit can be improved.

  In a ninth invention according to any one of the sixth to eighth inventions, the surface of the wall in the heating chamber is formed of a material having a reflectance of 20% or less at the wavelength of light irradiated by the first illumination unit. Ru. By setting the reflectance as described above, it is possible to suppress that the light irradiated by the first illumination unit is reflected by the wall surface in the heating chamber, and the visibility by the imaging unit can be further improved.

  In a tenth invention according to any one of the first to ninth inventions, the steam supply hole is disposed on the wall surface in the heating chamber not facing the side wall surface on the side where the imaging unit is disposed. Such an arrangement of the steam supply holes can reduce the amount of steam supplied from the steam supply holes directly to the imaging unit, and can reduce the adverse effect of the steam on the visibility of the imaging unit.

  Hereinafter, Embodiment 1 according to the heating cooker of the present invention will be described with reference to the attached drawings. In addition, the heating cooker of this invention is not limited to the structure of the heating cooker described in the following Embodiment 1. FIG.

Embodiment 1
FIG. 1 shows a front view of a heating cooker 1 according to a first embodiment of the present invention. FIG. 2 shows a side cross-sectional view of the heating cooker 1 according to the first embodiment. The heating cooker 1 of Embodiment 1 is an apparatus for cooking food etc. (not shown) in the heating chamber 2.

  As shown in FIGS. 1 and 2, the heating cooker 1 includes a main body 3 forming a heating chamber 2 therein, and a door 4.

  The main body 3 is formed as a casing outside the heating cooker 1 while forming the heating chamber 2 inside. As shown in FIG. 1, a display unit 5 and an operation unit 6 are provided above the front surface of the main body 3. The display unit 5 is a portion for displaying an operation state of the heating cooker 1 and the like. The display unit 5 in the first embodiment is configured of a liquid crystal screen. The operation unit 6 is a portion for the user to operate the heating cooker 1. The operation unit 6 in the first embodiment is configured of a plurality of buttons operable by the user. The user can control various operations of the heating cooker 1 by pressing the button of the operation unit 6. The contents such as the operation of the heating cooker 1 selected by the operation unit 6 are displayed on the display unit 5.

  In the first embodiment, the wall surface forming the heating chamber 2 of the main body 3 is made of, for example, a material such as a enameled steel plate, a stainless steel plate, or a painted steel plate.

  The door 4 is a door attached to the main body 3 so as to be openable and closable. The door 4 in the first embodiment is rotatably mounted in the front-rear direction below the front surface of the main body 3 and has a handle (not shown) that can be gripped by the user. The user can open and close the door 4 by operating the handle of the door 4. 1 shows the door 4 in a closed state (inaccessible to the heating chamber 2), and FIG. 2 shows the door 4 in an opened state (accessible to the heating chamber 2).

  As shown in FIG. 2, the heating cooker 1 further includes a steam supply unit 7, a heater unit 8, and a microwave supply unit 9 inside the main body 3.

  The steam supply unit 7 is a mechanism for supplying steam for heating and cooking food and the like to the heating chamber 2. The steam supply unit 7 in the first embodiment is disposed above the upper wall surface 2 a of the heating chamber 2 and includes a water tank 10 and a steam heater 11.

  The water tank 10 is a tank for storing water for steam generation. The steam heater 11 is a heater for heating the water of the water tank 10. As shown in FIG. 2, a steam heater 11 is provided adjacent to the water tank 10. When the water of the water tank 10 is heated to a predetermined temperature or higher by the steam heater 11, the water evaporates and becomes steam. The steam is supplied to the heating chamber 2 through a steam supply hole 12 provided on the upper wall surface 2a of the heating chamber 2 shown in FIG. The water in the water tank 10 is configured to be refillable by the user.

  The heater unit 8 is a mechanism for heating the heating chamber 2 by convective heat or radiant heat. The heater unit 8 in the first embodiment is disposed at the rear (rear side) of the back wall surface 2 b of the heating chamber 2 and includes a convection heater 13 such as a sheathed heater and a centrifugal fan 14. The back wall 2b of the heating chamber 2 is provided with a plurality of holes (not shown) for communicating the heating chamber 2 with the space on the back side where the heater 8 is disposed. In such a configuration, air heated by the convection heater 13 is blown toward the inside of the heating chamber 2 by the centrifugal fan 14 so that food etc. disposed in the heating chamber 2 and the heating chamber 2 are convective heat or radiant heat Heat by.

  The microwave supply unit 9 is a mechanism for supplying a microwave for heating food or the like in the heating chamber 2 to the heating chamber 2. The microwave supply unit 9 according to the first embodiment is provided below the bottom wall surface 2c of the heating chamber 2 and includes a magnetron 15, a waveguide 16a, and an antenna 16b, and is a crystallized glass that transmits microwaves. Etc is covered with a cover 2f. The bottom wall 2c of the heating chamber 2 is constituted by the upper surface of the cover 2f. The magnetron 15 is an example of a microwave generation unit that generates microwaves. The microwaves generated by the magnetron 15 are directed to the antenna 16 b. The antenna 16 b is an antenna for diffusing the microwaves from the magnetron 15 into the heating chamber 2. In such a configuration, the microwaves generated by the magnetron 15 are diffused by the antenna 16 b and supplied to the heating chamber 2 through the cover 2 f.

  The heating cooker 1 in Embodiment 1 further includes an inverter 17. The inverter 17 is a circuit mechanism for driving the magnetron 15.

  The heating cooker 1 in Embodiment 1 further includes a control unit 36 (FIG. 1). The control unit 36 performs overall control with respect to driving of various components included in the heating cooker 1. The control unit 36 controls the drive of the inverter 17 or the like so as to implement a predetermined cooking course according to a program incorporated in advance, based on the content input by the operation unit 6, for example.

  By providing the above-described configuration, the heating cooker 1 according to the first embodiment can perform steam heating by the steam supply unit 7, convection and radiation heating by the heater unit 8, and food and the like in the heating chamber 2. The micro heating by the wave supply part 9 can be implemented. These heating methods can be implemented alone or in combination as appropriate.

  Next, the imaging unit 18 provided in the heating cooker 1 will be described with reference to FIGS. FIG. 3 is a front cross-sectional view of the heating cooker 1 according to the first embodiment, and FIG. 4 is a front enlarged cross-sectional view of the heating cooker 1.

  The imaging unit 18 is a unit for imaging the inside of the heating chamber 2 to acquire an image in the heating chamber 2. As shown in FIG. 3, the imaging unit 18 in the first embodiment is provided at a position adjacent to the side wall surface 2 d on one side of the heating chamber 2 (left side in FIG. 3). The image in the heating chamber 2 captured by the imaging unit 18 is displayed on the display unit 5 so that the user can check, for example.

  The figure which expanded the peripheral part of the side wall surface 2d of the heating cooker 1 centering on the imaging unit 18 shown by FIG. 3 by FIG. 4 is shown. As shown in FIG. 4, the imaging unit 18 according to the first embodiment includes a camera 19, a blower fan 20, a blower guide 21, and illumination units 22 and 23.

  The camera 19 is an example of an imaging unit that images the inside of the heating chamber 2. The camera 19 in the first embodiment includes a lens 24 and an imaging sensor (not shown). The inside of the heating chamber 2 is imaged by detecting light acquired through the lens 24 provided at the tip of the camera 19 with an imaging sensor, and an image in the heating chamber 2 is acquired. A through hole 25 is formed on the side wall surface 2 d of the heating chamber 2 so that imaging through the lens 24 of the camera 19 is possible. As shown in FIG. 4, the camera 19 is fixed to the main body 3 at a position deviated from the side wall 2 d of the heating chamber 2 in the direction away from the heating chamber 2. The lens 24 positioned at the tip of the camera 19 is disposed toward the inside of the heating chamber 2 so that the food or the like in the heating chamber 2 can be contained in the field of view through the through hole 25. In the example shown in FIG. 4, it is disposed so as to generally face the center of the heating chamber 2. In FIG. 4, the direction in which the camera 19 captures an image is taken as an imaging direction A.

  An angle (that is, an angle formed with respect to the horizontal direction) formed by the imaging direction A in which the camera 19 faces the heating chamber 2 with respect to the bottom wall surface 2c (FIG. 3) of the heating chamber 2 extending horizontally In the example shown in FIG. 4, the angle is set to 25 ° downward. Note that this angle may be below 0 ° -50 ° depending on the angle of view of the camera.

  The blower fan 20 is a fan fixed to the main body 3 below the camera 19 and is disposed to blow air upward.

  The blower guide 21 is a member for guiding the wind blown by the blower fan 20. The blower guide 21 according to the first embodiment is attached to the upper side of the blower fan 20 and is guided upward so that the wind blown by the blower fan 20 passes through the space 27 between the lens 24 of the camera 19 and the through hole 25. Do.

  Thus, the air curtain for the camera 19 is formed by guiding the wind blown by the blower fan 20 by the blower guide 21 and passing the space 27 between the lens 24 of the camera 19 and the through hole 25. Details of this air curtain will be described later.

  The illumination units 22 and 23 are members for irradiating the inside of the heating chamber 2 with light to illuminate the inside of the heating chamber 2. In the first embodiment, the illumination units 22 and 23 are provided one each in the upper side and the lower side of the camera 19. The illumination units 22 and 23 in the first embodiment are both configured by LEDs.

  As shown in FIG. 4, the illumination units 22 and 23 are provided on the side wall 2 d of the heating chamber 2. The light emitted from the illumination units 22 and 23 emits substantially parallel light toward the side wall surface 2 e (FIG. 3) opposed to the side wall surface 2 d. Parallel light is light traveling in parallel, and "generally parallel light" in the present specification means light obtained by converging a point light source with a lens like an LED with a lens. In FIG. 4, the direction in which the illumination units 22 and 23 emit light is referred to as an irradiation direction B. In the first embodiment, the illumination units 22 and 23 emit substantially parallel light which travels in the horizontal direction.

  The irradiation angle of the illumination units 22 and 23 is the angle that the irradiation direction B of the illumination units 22 and 23 forms with the bottom wall surface 2c (FIG. 3) of the heating chamber 2 extending horizontally (that is, the angle formed with respect to the horizontal direction). Then, in the example shown in FIG. 4, it is set to 0 °.

  The imaging direction A of the camera 19 described above and the irradiation direction B of the illumination units 22 and 23 are set to be, for example, a difference within a range of 0 ° -25 °. In other words, the irradiation angles of the illumination units 22 and 23 and the imaging angle of the camera 19 are set so as to be, for example, a difference within the range of 0 ° -25 °.

  Here, it is preferable that the wavelength of the light which illumination part 22 and 23 irradiates shall be in the range of 380 nm-780 nm. If it is such a range, since it corresponds to the wavelength of a visible light range, the camera 19 of the heating cooker 1 and a user can recognize the light of the illumination parts 22 and 23. Furthermore, it is more preferable to make the wavelength which shows the largest luminous intensity of the light which the illumination parts 22 and 23 irradiate make into the range of 550 nm-780 nm. If it is such a range, since it is the range of what is called a long wavelength, the light which illumination part 22 and 23 irradiates becomes reddish. In the first embodiment, for example, the visible light range and the long wavelength range are set to 580 nm. In this manner, the reddish illumination by the illumination units 22 and 23 can be clearly recognized in the heating chamber 2 by the camera 19 and the user.

  In the first embodiment, the material constituting the wall surface of the heating chamber 2 is, for example, a enameled steel plate, and the wavelength corresponding to the maximum emission intensity of the light emitted by the illumination units 22 and 23 is 580 nm. The reflectance is about 18%. Thus, the wavelength of light or the material of the inner wall is selected so that the reflectance of the inner wall of the heating chamber 2 is 20% or less with respect to the wavelength of light irradiated by the illumination units 22 and 23.

  As shown in FIG. 4, in the vicinity of each component of the imaging unit 18 described above, a first air passage 26, a second air passage (described later), and a third air passage 28 are provided. There is.

  The first air passage 26 is an air passage for passing air from the outside of the heating cooker 1 to the blower fan 20. The first air passage 26 is in communication with the intake port 29 provided on the outer side wall surface 32 of the main body 3 and the upstream open end of the blower fan 20. The wind of the first air passage 26 is sent to the blower fan 20. The blower fan 20 blows off the wind from the first air passage 26, and the blower guide 21 guides the wind. The air guide 21 guides the air in the direction of passing through the space 27 between the lens 24 of the camera 19 and the through hole 25. That is, a second air passage is formed by the blower fan 20 and the blower guide 21. The third air passage 28 is an air passage for exhausting the air having passed through the space 27 between the lens 24 of the camera 19 and the through hole 25 to the outside of the heating cooker 1. The third air passage 28 is in communication between the space 27 between the lens 24 and the through hole 25 of the camera 19 and the exhaust port 30 provided on the outer side wall surface 32 of the heating cooker 1.

  According to such a configuration, the air blowing fan 20 blows out the air taken in from the air intake port 29, and the air is guided by the air blowing guide 21 (and the second air passage 27) while the lens 24 of the camera 19 The space 27 between the through holes 25 is allowed to pass. Thereby, an air curtain for the camera 19 with respect to the space in the heating chamber 2 is formed. The wind forming the air curtain is then exhausted to the outside through the exhaust port 30.

  As shown in FIG. 4, an extension 31 is provided on the side wall 2d of the heating chamber 2 in which the through hole 25 is formed. The extension portion 31 is a portion extending from the inner periphery of the through hole 25 toward the outside of the heating chamber 2 (left direction in FIG. 4). In the first embodiment, the extension 31 is formed to rise vertically (that is, extend in the horizontal direction) from the side wall 2 d of the heating chamber 2.

  Next, operations and effects of the above-described imaging unit 18 and components around the imaging unit 18 will be described.

  In the heating chamber 2, particularly during cooking, the temperature is high (for example, 200 ° C.) including food and air around the food. Not only the temperature is high, but the steam supplied from the steam supply unit 7 and the steam generated by heating the food by the heater unit 8 and the microwave supply unit 9 are often full. Under such an environment, the heating cooker 1 according to the first embodiment has a structure in which the through holes 25 for the camera 19 are provided in the side wall surface 2 d of the heating chamber 2. There is a possibility that the contained air may come out of the heating chamber 2 through the through holes 25. When such air goes out of the heating chamber 2, the air may reach the camera 19 (especially the lens 24) in the vicinity of the through hole 25.

  Therefore, the heating cooker 1 according to the first embodiment is provided with the blower fan 20 and the blower guide 21 as the imaging unit 18, and the blower guide 21 allows the wind from the blower fan 20 to be between the camera 19 and the through hole 25. An air curtain is formed to cross the space. Thereby, air in the heating chamber 2 can be prevented from reaching the camera 19 (particularly, the lens 24). That is, since the bad effect (thermal damage to the camera 19, the fogging of the lens 24, etc.) to the camera 19 by a hot air, steam, etc. is reduced, the reliability of the camera 19 can be improved. In addition, by forming the air curtain, it is also possible to reduce the attraction of the wind guided by the air blowing guide 21 to move into the heating chamber 2 through the through hole 25. Further, when the imaging angle of the camera 19 is upward, the wind of the air curtain colliding with the lens 24 of the camera 19 is likely to escape to the third air passage 28 side, while in the first embodiment, The imaging angle of the camera 19 is set to be downward. In such a case, the wind of the air curtain colliding with the lens 24 of the camera 19 is likely to be discharged into the heating chamber 2 through the through hole 25 instead of the third air passage 28. As described above, by setting the imaging angle of the camera 19 downward, it is possible to prevent the heat and vapor from diffusing from the through hole 25.

  Furthermore, in the first embodiment, since the steam supply unit 7 for supplying steam is provided in the heating chamber 2, the amount of steam filling in the heating chamber 2 tends to be large, while the air curtain described above is used. By forming the vapor, it is possible to suppress the vapor from reaching the camera 19 through the through hole 25. Thereby, the reliability of the camera 19 and the visibility by the camera 19 can be improved.

  In the first embodiment, the air guide 21 guides the wind along or against the surface of the lens 24, and guides the wind only in the direction in which the air curtain is formed (the upper direction in the drawing of FIG. 4). ing. In other words, the air guide 21 guides the air flow in one direction across the lens 24 and the through hole 25. As a result, a more reliable air curtain is formed, and the function of blocking the space in the heating chamber 2 is improved.

  When such an air curtain is formed, it is preferable to more reliably prevent the wind forming the air curtain from being drawn into the heating chamber 2 through the through holes 25. So, in Embodiment 1, as shown in FIG. 4, the extension part 31 extended outside from the through-hole 25 is provided. By providing the extension 31, the wind forming the air curtain is further suppressed from moving into the heating chamber 2 through the through hole 25 than when only the through hole 25 is provided without providing the extension 31. can do. Thus, the air curtain can be formed more reliably, and the reliability of the camera 19 can be improved.

  Further, in the first embodiment, since the microwave supply unit 9 for supplying the microwaves is provided, it is preferable to prevent the microwaves in the heating chamber 2 from leaking to the outside through the through holes 25. On the other hand, the microwave in the heating chamber 2 can also be suppressed from leaking from the through hole 25 to the outside by providing the above-described extension 31. Thereby, the microwaves can be prevented from reaching the camera 19 susceptible to the microwaves, and the camera 19 can obtain a stable image.

  Further, in the first embodiment, the blower guide 21 is provided to guide the wind upward. In the general heating cooker 1, in the main body 3 forming the heating chamber 2, the temperature tends to be higher in the upper part than the lower part. On the other hand, if it arrange | positions so that the air flow guide may be guided upwards as in the first embodiment, the main body of the heating cooker 1 compared to the case of guiding the air downward. Among the three, it is possible to cool relatively high temperature points. Thereby, it can suppress that the temperature of the main body 3 becomes high too much.

  In addition to the formation of the air curtain described above, in the first embodiment, the illumination units 22 and 23 are used to illuminate the inside of the heating chamber 2. From this, the visibility by the camera 19 can be improved.

  Particularly in the first embodiment, the illumination units 22 and 23 are disposed on the same side as the side wall surface 2 d on the side where the camera 19 is disposed, that is, on the side wall surface 2 d side of the heating chamber 2 in which the through hole 25 is formed. ing. According to such an arrangement, since the illumination units 22 and 23 are at positions not facing the camera 19, they do not have a backlit relationship in positional relationship with the camera 19. Thereby, the visibility by the camera 19 can be improved. In addition, in order not to be in a backlit relationship, the illumination units 22 and 23 may be disposed on the top wall 2a and the bottom wall 2c in addition to the side wall 2d of the heating chamber 2. That is, when the illumination units 22 and 23 are disposed on the wall surface (side wall surface 2 e) other than the wall surface (side wall surface 2 d) on which the camera 19 is disposed, it is possible to prevent backlighting.

  Further, by arranging the illumination units 22 and 23 not only on the side of the camera 19 but also on the same side as the side wall 2 d of the heating chamber 2 in which the camera 19 is provided, the positional relationship with the camera 19 can be reduced. Relationship. Since the mist in which the vapor in the heating chamber 2 is condensed has a particle diameter of 1 to 100 μm, it becomes geometric scattering from Mie scattering, and the forward scattering is large (scattering in the traveling direction of light). Therefore, by providing the illumination units 22 and 23 on the same side wall surface 2 d side as the camera 19, it is possible to reduce the influence of the forward scattering as the relationship of the forward light. Thereby, the visibility by the camera 19 can be further improved.

  In the first embodiment, as shown in FIG. 4, the difference between the irradiation angle of the illumination units 22 and 23 and the imaging angle of the camera 19 is set within a predetermined range (for example, a range of 0 ° -25 °). Therefore, it is possible to make the relationship of the more accurate forward light. Thereby, the visibility by the camera 19 can be further improved.

  Moreover, the wavelength of the light which the illumination parts 22 and 23 in Embodiment 1 irradiate sets the wavelength which shows largest luminous intensity to 550 nm-780 nm. Such a range falls within the range of 380 to 780 nm which is the wavelength of the visible light range, so that the inside of the heating chamber 2 can be more clearly illuminated, and the visibility by the camera 19 can be improved. Moreover, since 550 nm-780 nm are also a long wavelength range, the color of the light irradiated from the irradiation parts 22 and 23 becomes reddish. As a result, the inside of the heating chamber 2 can be clearly illuminated as compared with the blue light emitted when the wavelength showing the maximum emission intensity is set to a low wavelength (for example, 380 nm to 550 nm), and the camera 19 Visibility can be further improved. In addition, in the illumination which combined the several emission spectrum with white LED etc., the same effect can be acquired by setting the spectrum whose emission energy is the largest to 580-780 nm. Furthermore, in the first embodiment, the illumination units 22 and 23 emit substantially parallel light that travels in the horizontal direction in the visible light range having a wavelength of 380 to 780 nm. As described above, scattering can be prevented and visibility by the camera 19 can be improved by making the collimated light approximately parallel light with an LED or the like having a directivity characteristic θ1 / 2 of 60 ° or less.

  The light emitted from the illumination units 22 and 23 reaches the wall surface of the heating chamber 2. In the first embodiment, in particular, the light emitted by the illumination units 22 and 23 is substantially parallel light along the horizontal direction, so most of the light reaches the side wall 2e (FIG. 3) opposed to the side wall 2d. Here, in the first embodiment, the surface of the wall surface in the heating chamber 2 is a material having a reflectance of 20% or less at the wavelength (for example, 580 nm) of the light irradiated by the illumination units 22 and 23 (specifically, It is formed of a enameled steel plate etc.). By setting the reflectance as described above, it is possible to suppress that the light irradiated by the illumination units 22 and 23 is reflected by the wall surface in the heating chamber 2 (in particular, the side wall surface 2 e facing the side wall surface 2 d). , And the visibility by the camera 19 can be further improved.

  In the configuration described above, the steam supply holes 12 for supplying steam are provided on the upper wall 2 a of the heating chamber 2. That is, the steam supply hole 12 is arranged on the wall surface in the heating chamber 2 which does not face the side wall surface 2 d on which the camera 19 as the imaging unit is arranged. Such an arrangement of the steam supply holes 12 can reduce the amount of steam supplied from the steam supply holes 12 directly to the camera 19, thereby reducing the adverse effect of the steam on the visibility of the camera 19 .

  As described above, the heating cooker 1 according to the first embodiment includes the heating chamber 2 for storing food, the through holes 25 formed in the side wall surface 2 d of the heating chamber 2, and the inside of the heating chamber 2 through the through holes 25. A camera 19 (imaging unit) for imaging, a blower fan 20 (blowing unit) for blowing air outside the heating chamber 2, and a blower guide 21 for guiding the wind by the blower fan 20 are provided. In addition, the air guide 21 is arranged such that the air from the air fan 20 crosses the space between the camera 19 and the through hole 25 to form an air curtain. According to such a configuration, since an air curtain is formed between the camera 19 and the through hole 25, air including hot air or steam in the heating chamber 2 reaches the camera 19 from the through hole 25. You can prevent that. Thereby, in the structure provided with the camera 19, the bad influence which the air in the heating chamber 2 reaches the camera 19 and gives to the camera 19 can be suppressed, and the reliability and visibility of the camera 19 can be improved. .

  In the heating cooker 1 of the first embodiment, the inside of the heating chamber 2 is photographed through the heating chamber 2 for storing food, the through hole 25 formed in the side wall surface 2 d of the heating chamber 2, and the through hole 25. The camera 19 (imaging unit), and illumination units 22 and 23 (first illumination units) provided on the side wall surface 2 d side where the through holes 25 are formed and which emits light into the heating chamber 2 are provided. As described above, in the configuration provided with the camera 19, by further providing the illumination units 22 and 23 for illuminating the inside of the heating chamber 2, the vapor in the heating chamber 2 is reduced even by the vapor in the heating chamber 2. , And the visibility by the camera 19 can be improved. Moreover, since the illumination units 22 and 23 are provided on the side wall surface 2 d side where the through holes 25 are formed, the camera 19 and the first illumination unit do not have a backlit relationship, and the visibility by the camera 19 is further enhanced. It can be improved.

  As mentioned above, although the present invention was described with the above-mentioned Embodiment 1 mentioned above, the present invention is not limited to the above-mentioned Embodiment 1. For example, although Embodiment 1 shows a configuration example in which the steam supply unit 7 is provided, it is needless to say that the same effect can be obtained by cooking in which steam is generated by heating with a heater or a microwave. Although Embodiment 1 demonstrated the case where the heating cooker 1 was equipped with the steam supply part 7, the heater part 8, and the microwave supply part 9, it does not restrict to such a case, For example, the steam supply part 7, the heater part 8 Alternatively, at least one of the microwave supply units 9 may be provided. That is, if it is the heating cooker 1 which has at least any one of a steam heating function, a heater heating function, and a microwave heating function, the invention of Embodiment 1 can be applied and the same effect can be produced.

  Further, in the first embodiment, as illustrated in FIG. 4, the case where the illumination units 22 and 23 are embedded in contact with the side wall surface 2 d has been described. However, the present invention is not limited thereto. For example, similarly to the camera 19 shown in FIG. 4, the illumination units 22 and 23 may be fixed at a position away from the side wall surface 2 d. As described above, the illumination units 22 and 23 may be provided on the side surface 2 d “side” of the heating chamber 2. As described above, the illumination units 22 and 23 may be provided on the upper wall surface 2a and the bottom wall surface 2c which do not face the side wall surface 2d.

  In the first embodiment, although the case where the through hole 25 for the camera 19 is provided only in the side wall surface 2d has been described, the present invention is not limited to such a case. For example, it may be provided at a position which spans not only the side wall surface 2d but also the upper wall surface 2a (a position which spans both the side wall surface 2d and the upper wall surface 2a). That is, the through holes 25 may be provided "at least partially" in the side wall 2d.

  Further, in the first embodiment, the case where the light emitted from the illumination units 22 and 23 does not reach the lens 24 of the camera 19 directly is described, but the present invention is not limited to such a case. For example, the arrangement may be such that the light emitted from the illumination units 22 and 23 reaches the lens 24 of the camera 19 directly. In such a case, a blocking unit may be provided between the illumination units 22 and 23 and the lens 24 of the camera 19 for blocking light by the illumination units 22 and 23. Thereby, the visibility by the camera 19 can be improved. In addition, as a form of this interruption | blocking part, it is good also as a protrusion part 37 which protrudes from the side wall surface 2d of the heating chamber 2 as shown in FIG. 6, for example.

  In the first embodiment, the wall surface of the heating chamber 2 is formed of a material (for example, a enameled steel plate) having a low reflectance with respect to light from the illumination units 22 and 23. Not limited to For example, while the wall surface itself of the heating chamber 2 is formed of any material (for example, zinc, aluminum-plated steel plate, stainless steel plate) different from the material with low reflectance, the material with low reflectance (eg, fluorine) It may be formed (paint etc.) so that the said wall surface may be covered using resin. Even in such a case, the effect of suppressing the reflection of light by the illumination units 22 and 23 can be similarly exhibited. Moreover, when using a material with a low reflectance, you may apply not to the whole wall surface of the heating chamber 2, but only to the side wall surface 2e which opposes the side wall surface 2d in which the illumination parts 22 and 23 are provided. Thereby, even if the said material is not applied to all the wall surfaces, the effect which suppresses reflection of the light by the illumination parts 22 and 23 can be exhibited efficiently.

  Moreover, in Embodiment 1, although the camera 24 provided with the lens 24 and the imaging sensor was demonstrated as an example of an imaging part, it does not restrict to such a case. For example, any configuration may be used as long as it performs imaging, such as a camera having no lens.

  Moreover, in Embodiment 1, although the case where the extension part 31 stood up perpendicularly | vertically and extended from the side wall surface 2d was demonstrated, it is not restricted to such a case. For example, as shown in FIG. 5, the extension 33 may be formed to be curved. Specifically, as shown in FIG. 5, the boundary between the extension portion 33 and the wall surface of the heating chamber 2 is formed so as to rise while curving in a curved shape. With such a shape of the extending portion 33, generation of turbulent flow is suppressed in a region opposed to the wind from the blower fan 20, as compared with the case where the extending portion 33 stands vertically from the side wall surface 2d of the heating chamber 2 It can adjust the flow of air flow. Thereby, it is possible to suppress the wind (air curtain) by the blower fan 20 from entering the heating chamber 2.

  In the first embodiment, the case where the two illumination units 22 and 23 are provided as the illumination unit for illuminating the inside of the heating chamber 2 has been described, but the number is not limited to two and, for example, one or three or more are provided. May be

  Moreover, although Embodiment 1 demonstrated the case where the illumination parts 22 and 23 (1st illumination part) were provided in the side wall surface 2d side of the heating chamber 2, it does not restrict to such a case. For example, another illumination unit (second illumination unit) may be provided on the wall surface side different from the side wall surface 2d. At this time, as shown in FIG. 7, the second illumination units 34 and 35 may be provided on the side wall surface 2 e side of the heating chamber 2 facing the first illumination units 22 and 23. In such a case, when the camera 19 captures an image, the first illumination units 22 and 23 having a relationship of forward light are operated, while the second illumination units 34 and 35 having a relationship of backlight for the camera 19. May be stopped. Specifically, when the control unit 36 that controls the irradiation of light by the first illumination units 22 and 23 and the second illumination units 34 and 35 performs imaging with the camera 19, the second illumination unit 34, The camera 19 and the second illumination units 34 and 35 may be controlled so as not to emit light by 35. By such control, the second illumination unit disposed on the side opposite to the wall surface on which the camera 19 is disposed is stopped to perform imaging, thereby preventing backlighting of the camera 19 And the visibility of the camera 19 can be further improved.

  Furthermore, in the first embodiment, the case where only two through holes 25 for the camera 19 and the steam supply holes 12 for the steam supply unit 7 are provided as the through holes in the wall surface of the heating chamber 2 has been described. Not limited to the above, other through holes may be provided. For example, a discharge hole for steam may be provided on the wall of the heating chamber 2 so that the steam in the heating chamber 2 is discharged to the outside of the heating chamber 2. Thereby, particularly in the configuration provided with the steam supply unit 7, the steam can be discharged from the discharge hole, so that the amount of steam to pass through the through hole 25 for the camera 19 can be reduced. Thus, the reliability of the camera 19 can be improved. In addition, it is preferable to arrange | position the discharge hole in this case in a 1/2 or more upper direction in the height direction also in the wall surface of the heating chamber 2, since a vapor | steam rises.

  Also, in the first embodiment, specific values regarding the wavelength and angle of light and specific examples of the material forming the wall of the heating chamber 2 have been described, but these are merely examples, and the invention is not limited to these examples. It is not limited.

  Further, in the first embodiment, the case where the display unit 5 is configured by a liquid crystal screen has been described, but the present invention is not limited to such a case, and another form having a display function may be used. Further, in the first embodiment, the case where the operation unit 6 is configured by a plurality of buttons has been described. However, the present invention is not limited to such a case, and another form in which the user can operate may be used.

  This invention is applicable if it is a heating cooker which heats and cooks a foodstuff.

DESCRIPTION OF SYMBOLS 1 heating cooker 2 heating chamber 3 main body 4 door 5 display part 6 operation part 7 steam supply part 8 heater heating part 9 microwave supply part 10 water tank 11 heater for steam 12 steam supply hole 12
13 Convection Heater 14 Centrifugal Fan 15 Magnetron 16a Waveguide 16b Antenna 17 Inverter 18 Imaging Unit 19 Camera 20 Blowing Fan 21 Blowing Guide 22, 23 Lighting Unit (First Lighting Unit)
Reference Signs List 24 lens 25 through hole 26 first air path 27 space 28 third air path 29 intake port 30 exhaust port 31 extension portion 32 outer side wall surface 33 extension portion 34, 35 illumination portion (second illumination portion)
36 Control part 37 Protrusion part (cutoff part)

Claims (6)

A heating chamber for storing food,
Through holes formed in the side wall surface of the heating chamber,
An imaging unit for imaging the heating chamber via the through hole;
And a first illumination unit provided on the side wall surface side where the through hole is formed and below the imaging unit, for irradiating the heating chamber with light .
The imaging angle of the imaging unit is set downward,
The first illumination unit is configured to emit substantially parallel light,
The heating cooker further comprising a blocking unit between the first lighting unit and the imaging unit that protrudes from the side wall surface of the heating chamber and blocks the light emitted by the first lighting unit . A second illumination unit provided on the side wall surface side of the heating chamber facing the first illumination unit;
And a control unit configured to control irradiation of light by the first lighting unit and the second lighting unit.
Control unit controls the imaging unit and the second illumination section so as not to irradiate light by the second illumination section when performing imaging by the imaging section, the heating cooker according to claim 1. The first illumination unit, the wavelength is irradiated with light of 380 nm to 780 nm, heating cooker according to claim 1 or 2. The heating cooker according to claim 3 , wherein the first illumination unit emits light having a wavelength of 550 nm to 780 nm. The heating cooker according to claim 3 or 4 , wherein the surface of the wall surface in the heating chamber is formed of a material having a reflectance of 20% or less at the wavelength of light irradiated by the first illumination unit. The heating cooker according to any one of claims 1 to 5 , wherein the steam supply hole is disposed on a wall surface in the heating chamber not facing the side wall surface on the side where the imaging unit is disposed.

Images