Heating cooker

Abstract

A heating cooker comprises: a heating chamber (5); a side wall (5c) defining the inner surface of the heating chamber (5); a first hole (5ca) formed in the side wall (5c); and a cover (27) having second holes (27e, 27f) on the outside of the first hole (5ca) and facing the first hole (5ca), and a flat portion formed around the second holes (27e, 27f). The heating cooker comprises: a light-transmitting component (25) disposed on the cover (27) so as to face the first hole (5ca) and the second hole (27e, 27f) and contact the flat portion; and an optical device (21) disposed outside the cover (27). Furthermore, the side wall (5c) has a curved portion (5cb) around the first hole (5ca) that is cut outward and then folded. Thus, a heating cooker capable of preventing steam from leaking through the holes is provided.

Description

[0001] This application is a divisional application based on the invention patent application with the invention name “Heating cooker”, the application date is February 7, 2019, and the application number is 201980015027.9 (the international application number is PCT / JP2019 / 004326). Technical Field

[0002] The present invention relates to a heating cooker for heating food in a heating chamber. Background Art

[0003] Conventionally, a cooking device has been proposed in which a lighting device is arranged next to a heating chamber to brighten the interior of the heating chamber and the cooking device includes a steam generator for supplying steam into the heating chamber to perform heating and cooking (see, for example, Patent Document 1).

[0004] The cooking device described in Patent Document 1 includes two internal lamps as irradiation units for illuminating the heating chamber. Each internal lamp includes a light source, and a hole formed in the side wall is covered by a light-transmitting member. The light source is positioned further outward from the light-transmitting member. Furthermore, the light emitted from the light source passes through the light-transmitting member and the hole to illuminate the heating chamber.

[0005] However, in the structure of the conventional heating cooker, there is a possibility that steam may leak from the gap between the edge of the light-transmitting hole formed in the side wall of the heating chamber and the light-transmitting member.

[0006] Prior art literature

[0007] Patent Literature

[0008] Patent Document 1: Japanese Patent Application Laid-Open No. 2017-211120 Summary of the Invention

[0009] The present invention provides a heating cooker capable of preventing steam from leaking into a heating chamber through a light-transmitting hole.

[0010] One embodiment of the present invention is a cooking device having a heating chamber. The cooking device comprises: a side wall defining one side of the inner surface of the heating chamber; a first hole formed in the side wall; and a cover portion having a second hole arranged outside the first hole and formed at a position opposite the first hole, and a flat portion formed along the periphery of the second hole. Furthermore, the cooking device comprises: a light-transmitting component arranged on the cover portion so as to be opposite to the first hole and the second hole and in contact with the flat portion; and an optical device arranged outside the cover portion and configured to at least one of emit light into the heating chamber and receive light from the heating chamber through the first hole, the second hole, and the light-transmitting component. Furthermore, the side wall has a curved portion cut outward around the first hole.

[0011] Thus, a cooking device capable of preventing steam from leaking into the heating chamber through the light transmission holes (the first hole and the second hole) is provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view of the heating cooker according to the embodiment.

[0013] Figure 2 This is a front perspective view of the cooking device with its door open.

[0014] Figure 3 This is a front perspective view of the heating chamber of the heating cooker.

[0015] Figure 4 It is a partially enlarged view of the periphery of the front upper portion of the side wall on the other side in the longitudinal direction of the heating chamber.

[0016] Figure 5 It is an exploded perspective view of the periphery of the side wall on the other side in the longitudinal direction of the heating chamber.

[0017] Figure 6 This is an outside view of the other side in the longitudinal direction of the heating chamber.

[0018] Figure 7 This is a front perspective view of a cover portion in which a light-transmitting member is mounted on the heating chamber.

[0019] Figure 8 It is a front perspective view of the cover portion with the light-transmitting component removed.

[0020] Figure 9 This is a cross-sectional view of the periphery of the lighting device of the heating cooker.

[0021] Explanation of symbols

[0022] 1: Cooker; 3: Housing; 3a: Front frame; 3b: Opening; 5: Heating chamber; 5a: Upper wall; 5b, 5c: Side walls; 5ca: Hole (first hole); 5cb: Bend; 5cc, 12cc: Flange; 5e: Bottom wall; 7: Door; 7a: Handle; 9: Display; 11: Operation unit; 12: Insulating metal plate; 12c: Side metal plate (first metal plate); 12ca, 23a, 23b: Holes; 12cb: Hook; 13: First tray; 15: Second tray; 16: Steam generator; 21: Illuminator (optical device); 21a: First illuminator; 21aa, 21ba: LED elements; 21b: Second illuminator; 2 3: Heat-insulating metal plate (second metal plate); 23c: First flange; 23d: Second flange; 23e, 23f: Metal plate; 25: Light-transmitting component; 27: Cover; 27a: First recess; 27b: Second recess; 27c: First flat portion; 27d: Second flat portion; 27e, 27f: Hole (second hole); 27g: First stopper (front-rear direction limiting portion); 27ga, 27ma: Protrusion; 27h: Protrusion (front-rear direction limiting portion); 27k: Second stopper (height direction limiting portion); 27m: Third stopper (height direction limiting portion); 27n: Fourth stopper (height direction limiting portion); 27p: Recess; 49: Lower frame. DETAILED DESCRIPTION

[0023] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to these embodiments.

[0024] (Implementation Method)

[0025] Below, refer to Figure 1 and Figure 2 A heating cooker according to an embodiment of the present invention will be described.

[0026] Figure 1 It is a front view of the heating cooker 1 of embodiment. Figure 2 It is a front perspective view of the cooking device 1 with the door 7 opened.

[0027] In the following description, the X direction is the longitudinal direction (width direction or left-right direction) of the cooking device 1, the Y direction is the front-back direction, and the Z direction is the height direction.

[0028] like Figure 1 and Figure 2 As shown, the cooking device 1 of the embodiment includes a housing 3 , a heating chamber 5 disposed in the housing 3 , and a door 7 that openably and closably covers an opening 3 b formed in a front frame 3 a serving as the front surface of the housing 3 .

[0029] The heating chamber 5 is composed of a space surrounded by an upper wall 5a arranged at the top, side walls 5b and side walls 5c arranged at both sides, a rear wall (not shown) arranged at the rear, and a bottom wall 5e arranged at the bottom. The heating chamber 5 is provided with a microwave radiation port (not shown) for radiating microwaves. Moreover, the heating chamber 5 is configured so that the object to be heated (food) placed in the heating chamber 5 is inductively heated by the microwaves radiated from the microwave radiation port. In addition, the heating chamber 5 is provided with a steam blowing port (not shown) at the top. Thus, the steam generator 16 (refer to Figure 3 )The steam generated is supplied to the heating chamber 5.

[0030] Door 7 has a horizontal rotation center below opening 3b. Thus, door 7 is mounted to housing 3 so that it can be opened and closed, with the rotation center serving as its pivot axis. Door 7 includes a handle 7a mounted on its upper portion. The user pulls handle 7a forward and downward to rotate door 7 to a horizontal position, thereby opening heating chamber 5. Alternatively, the user can rotate door 7 to a vertical position to close heating chamber 5.

[0031] The door 7 includes a display unit 9 and an operating unit 11, etc., located near the other side (right side) in the longitudinal direction (X direction) when viewed from the front. The display unit 9 is composed of, for example, a liquid crystal display, and displays menu screens, etc. The operating unit 11 includes, for example, buttons or knobs. The user can use the operating unit 11 to set various cooking instructions for the cooking device 1.

[0032] The housing 3 is connected to the lower frame 49 at the lower end. On the lower frame 49, the first tray 13 and the second tray 15 are detachably arranged in the front-to-back direction. The first tray 13 and the second tray 15 are arranged side by side in the longitudinal direction (X direction). For example, the first tray 13 is arranged on one side (left side) in the longitudinal direction, and the second tray 15 is arranged on the other side (right side) in the longitudinal direction. The first tray 13 is, for example, a tray for accumulating water droplets condensed in the heating cooker 1. The second tray 15 accommodates the steam generator 16 (see FIG. 1 ) arranged on the outside of the side wall 5b of the heating chamber 5. Figure 3 ) A water supply tank (not shown) for supplying water. In addition, the following description will be made with one side in the longitudinal direction being the left side and the other side being the right side when the heating cooker 1 is viewed from the front.

[0033] Next, refer to Figure 3 The structure around the heating chamber 5 will be described. Figure 3 It is a front perspective view of the heating chamber 5.

[0034] like Figure 3 As shown in FIG. 1 , heat insulating metal plates 12 are provided on the outer surfaces of the upper wall 5a, the side wall 5b and the side wall 5c of the heating chamber 5. Figure 3In the figure, a side metal plate 12c attached to the outer side surface of the side wall 5c is shown as the heat insulating metal plate 12. The side metal plate 12c covers the outer side surface of the side wall 5c.

[0035] The side metal plate 12c is provided with an illuminator 21 installed near the upper front portion. The illuminator 21 includes, for example, a first illuminator 21a and a second illuminator 21b, etc., which constitute the optical device of the present application. The first illuminator 21a and the second illuminator 21b are arranged side by side at a predetermined interval (for example, about 68 mm) in the vertical direction. The first illuminator 21a and the second illuminator 21b are composed of, for example, LED (light emitting diode) lighting devices. The first illuminator 21a and the second illuminator 21b respectively have an LED element 21aa and an LED element 21ba as a light emitting element (see Figure 9 ).

[0036] Next, refer to Figure 4 The structure of the periphery of the other side in the longitudinal direction of the heating chamber 5 will be described. Figure 4 It is a partially enlarged view of the periphery of the front upper portion of the side wall 5c on the other side (right side) in the longitudinal direction (X direction) of the heating chamber.

[0037] like Figure 4 As shown, the illuminator 21 is mounted on the side metal plate 12c with the heat insulating metal plate 23 between it and the side metal plate 12c. Specifically, the first illuminator 21a and the second illuminator 21b are mounted on the side metal plate 12c of the heat insulating metal plate 12 with the heat insulating metal plate 23 between them. The heat insulating metal plate 23 has a size (area) that slightly protrudes from the outer periphery of the first illuminator 21a and the second illuminator 21b. The heat insulating metal plate 23 includes a first flange 23c and a second flange 23d. The first flange 23c is formed by bending from the upper edge of the heat insulating metal plate 23 toward the outside (X direction). The second flange 23d is formed by bending from the front edge of the heat insulating metal plate 23 toward the outside (X direction).

[0038] Next, refer to Figure 5 , further details are given of the structure around the other side of the longitudinal direction of the heating chamber 5. Figure 5 It is an exploded perspective view of the periphery of the side wall 5 c on the other side (right side) in the longitudinal direction (X direction) of the heating chamber 5 .

[0039] like Figure 5 As shown, the side wall 5c of the heating chamber 5 is provided with a cover 27, a light-transmitting member 25, a side metal plate 12c of the heat-insulating metal plate 12, a heat-insulating metal plate 23, and an illuminator 21 in this order from the side wall 5c side. Furthermore, the heat-insulating metal plate 23 constitutes a second metal plate and includes a metal plate 23e and a metal plate 23f.

[0040] The side metal plate 12c includes a pair of holes 12ca spaced apart in the vertical direction, and a pair of hooks 12cb disposed on each hole 12ca. Each hole 12ca allows light emitted from the illuminator 21 to pass through. The pair of hooks 12cb are formed by bending outward (in the X direction) from the front and rear ends of each hole 12ca. Furthermore, the side metal plate 12c includes flanges 12cc bent inward (in the -X direction) from the upper and lower edges.

[0041] The heating chamber 5 has flanges 5cc formed by bending outward (in the X direction) from the upper and lower edges of the side wall 5c. Furthermore, the corresponding flanges 12cc of the side metal plate 12c are joined to the flanges 5cc of the side wall 5c. Thus, the side metal plate 12c is connected to the side wall 5c of the heating chamber 5. At this point, a space is formed between the flanges 5cc of the side wall 5c of the heating chamber 5 and the flanges 12cc of the side metal plate 12c. The cover 27 and light-transmitting member 25, etc., described later, are arranged in this formed space.

[0042] In addition, the metal plates 23e and 23f, which serve as the heat-insulating metal plates 23, are arranged at predetermined positions separated in the vertical direction (for example, a gap of about 38 mm). The metal plates 23e and 23f each have a hole 23a and a pair of holes 23b formed near the center. The hole 23a allows light emitted from the illuminator 21 to pass through. The pair of holes 23b are formed in the front-to-back direction (Y direction) of the hole 23a. The pair of hooks 12cb of the side metal plates 12c arranged opposite each other are inserted into the pair of holes 23b. As a result, the metal plates 23e and 23f, which serve as the heat-insulating metal plates 23, are engaged with the side metal plates 12c.

[0043] The light-transmitting member 25 is formed of a plate-shaped member that transmits light emitted from the illuminator 21. The light-transmitting member 25 is formed, for example, from a glass plate. Furthermore, the light-transmitting member 25 may be formed from a thermosetting resin plate such as silicone, or a resin film such as polyimide, in addition to a glass plate. The light-transmitting member 25 is positioned opposite the pair of holes 12ca formed in the side metal plate 12c of the heat-insulating metal plate 12.

[0044] Next, refer to Figure 6 The structure of the outer side surface on the other side in the longitudinal direction of the heating chamber 5 will be described. Figure 6 This is an outside view of the other side (right side) in the longitudinal direction of the heating chamber 5. In detail, Figure 6 Yes, remove Figure 3 An outside view of the side wall 5c of the heating chamber 5 with the side metal plate 12c shown.

[0045] like Figure 6As shown, the cover 27 is mounted, for example, by press-fitting, near the upper front portion of the other side wall 5c of the heating chamber 5. Here, the light-transmitting member 25 is formed into a rectangular shape, for example, longer in the vertical direction (Z direction) than in the front-back direction (Y direction) when viewed from the side.

[0046] Next, refer to Figure 7 and Figure 8 The structure around the cover portion 27 will be described. Figure 7 It is a front perspective view of the cover portion 27 in a state where the light-transmitting member 25 is attached. Figure 8 It is a front perspective view of the cover portion 27 in a state where the light-transmitting member 25 is removed.

[0047] like Figure 7 and Figure 8 As shown, the cover portion 27 has a first stopper 27g cut outward from the center of the height direction of the outer side surface of the cover portion 27 at the rear side relative to the center in the front-to-back direction. The first stopper 27g has an L-shaped cross-section in the X direction, for example, and extends in the up-down direction. It has two protrusions 27ga protruding inward (-X direction) near the end side in the up-down direction. In addition, the cover portion 27 has a recessed portion 27p protruding outward (X direction) at a position relative to the center in the front-to-back direction and opposite to the first stopper 27g. In addition, the cover portion 27 has a protrusion 27h, for example, in the shape of a semicircle, protruding outward (X direction) when viewed from the side. The protrusion 27h is formed so as to protrude outward (X direction) from the recessed portion 27p of the cover portion 27.

[0048] When the light-transmitting member 25 is inserted into the cover 27 having the above-described structure, a portion of the rear side surface of the light-transmitting member 25 abuts the first stopper 27g, while a portion of the front side surface of the light-transmitting member 25 abuts the protrusion 27h. As a result, the light-transmitting member 25 engages with the first stopper 27g and the protrusion 27h of the cover 27. As a result, this engagement restricts the front-to-back movement of the light-transmitting member 25. Specifically, the protrusion 27h and the first stopper 27g serve as lateral restraints for the light-transmitting member 25.

[0049] like Figure 8 As shown, the cover portion 27 has two second stoppers 27k that are bent outward (in the X direction) from the upper end into a claw-like shape. Furthermore, the cover portion 27 has a third stopper 27m near the lower portion of the front of the outer side surface, which is cut and raised outward (in the X direction). The third stopper 27m has an L-shaped cross-section in the Z direction, extending in the front-to-back direction (in the Y direction), and has a protrusion 27ma that protrudes inward (in the -X direction). Furthermore, the cover portion 27 has a fourth stopper 27n in the center near the lower end, which is bent outward (in the X direction) into a claw-like shape.

[0050] When the light-transmitting member 25 is inserted into the cover 27 of the above structure, the upper side surface of the light-transmitting member 25 abuts the two second stoppers 27k, while the lower side surface of the light-transmitting member 25 abuts the third stopper 27m and the fourth stopper 27n. This restricts the vertical movement of the light-transmitting member 25. Specifically, the second stopper 27k, the third stopper 27m, and the fourth stopper 27n constitute height-limiting portions for the light-transmitting member 25.

[0051] Furthermore, by pulling the light-transmitting member 25 attached to the cover 27 outward (in the X direction), the light-transmitting member 25 and the protrusion 27h can be released. This allows the light-transmitting member 25 to slide forward, making it easy to remove the light-transmitting member 25 from the cover 27.

[0052] On the other hand, when attaching the light-transmitting member 25 to the cover 27, the rear end of the light-transmitting member 25 is pressed against the first stopper 27g. Then, the front end of the light-transmitting member 25 is pushed inward. This causes the protrusion 27h of the cover 27 to engage with the light-transmitting member 25. At this time, the two protrusions 27ga of the first stopper 27g, which protrude inward (in the -X direction), and the protrusion 27ma of the third stopper 27m press the light-transmitting member 25 against the first flat portion 27c and the second flat portion 27d of the cover 27. This secures the light-transmitting member 25 to the cover 27. That is, as described above, the cover 27 functions as a metal plate for attaching the light-transmitting member 25. The first flat portion 27c and the second flat portion 27d are examples or a general term for flat portions.

[0053] In addition, the cover portion 27 has a first recessed portion 27a and a second recessed portion 27b that protrude outward (in the X direction). The first recessed portion 27a and the second recessed portion 27b are arranged at a predetermined interval (e.g., approximately 68 mm) in the vertical direction (in the Z direction). The first recessed portion 27a has the first flat portion 27c described above at its bottom (outer portion). A hole 27e, which constitutes the second hole of the present application, is formed in the first flat portion 27c. In other words, a flat area is formed around the hole 27e by the first flat portion 27c. The hole 27e allows light emitted from the first illuminator 21a to pass through.

[0054] Furthermore, the second recess 27b has the aforementioned second flat portion 27d at its bottom (outer portion). A hole 27f, which constitutes the second aperture of the present invention, is formed in the second flat portion 27d. In other words, the second flat portion 27d forms a flat area around the hole 27f. The hole 27f allows light emitted from the second illuminator 21b to pass through.

[0055] Next, refer to Figure 9 The structure around the lighting device 21 will be described. Specifically, Figure 9 It is a cross-sectional view of the periphery of the first illuminator 21 a and the second illuminator 21 b constituting the illuminator 21 .

[0056] like Figure 9 As shown, the heating chamber 5 has a pair of holes 5ca on the side wall 5c, which constitute the first hole of the present application. The pair of holes 5ca are used to irradiate the heating chamber 5 with the respective lights emitted from the first illuminator 21a and the second illuminator 21b. In addition, the side wall 5c has a curved portion 5cb around each hole 5ca, which is formed by cutting the side wall 5c toward the outside (X direction) of the hole 5ca. The curved portion 5cb reduces the leakage of radio waves from the heating chamber 5 through each hole 5ca to the outside through the respective holes 5ca by an effect generally known as the choke effect. At this time, the curved height of the curved portion 5cb in the X direction is formed to be smaller than the X-direction depth of the first recess 27a and the second recess 27b of the cover portion 27.

[0057] Therefore, the first flat portion 27c and the second flat portion 27d of the cover portion 27 are in close contact with the light-transmitting member 25 at a position further outward (in the X direction) than the end of the curved portion 5cb of the side wall 5c. That is, the curved portion 5cb of the side wall 5c and the light-transmitting member 25 are configured so as not to be in direct contact. In addition, the first flat portion 27c and the second flat portion 27d of the cover portion 27 are in face-to-face contact with the light-transmitting member 25. Therefore, even if the light-transmitting member 25 vibrates, for example, damage or breakage caused by contact with the curved portion 5cb can be reliably prevented. Furthermore, due to the face-to-face contact, leakage of steam from between the first flat portion 27c and the second flat portion 27d and the light-transmitting member 25 can be significantly reduced. In addition, due to the above-mentioned structure, no damage or the like is generated on the light-transmitting member 25, so the steam in the heating chamber 5 will not leak out through the hole 5ca from the damaged gap.

[0058] In addition, the heating chamber 5 has a machine room (not shown) at the bottom. A cooling fan (not shown) is arranged in the machine room. Thus, on the side metal plate 12c, the cooling air generated by the cooling fan (not shown) flows from the bottom to the top. At this time, the cooling air flows on the back side of the substrate of the first illuminator 21a and the second illuminator 21b. Therefore, the LED elements 21aa and 21ba are cooled from the back side of the substrate. Thus, the influence of the heat generated by the heating of the heated object in the heating chamber 5 on the first illuminator 21a and the second illuminator 21b can be reduced.

[0059] In addition, if Figure 9 As shown, the light-transmitting member 25 and the cover 27 are arranged in a non-contact manner with the side metal plate 12c. That is, a gap is provided between the light-transmitting member 25 and the cover 27 and the side metal plate 12c. This reduces the amount of heat transferred from the side wall 5c of the heating chamber 5 to the light-transmitting member 25 and the cover 27 and then to the side metal plate 12c through the gap. This reduces the effect of heat on the LED elements 21aa and 21ba.

[0060] As described above, the cooking device 1 of the above embodiment includes: a heating chamber 5; a side wall 5c defining one inner surface on the right side of the heating chamber 5; and a pair of holes 5ca formed in the side wall 5c, forming a first hole. Furthermore, the cooking device 1 includes a cover portion 27 having holes 27e and 27f forming a second hole, which are arranged outside the pair of holes 5ca and overlap with the holes 5ca; and a first flat portion 27c and a second flat portion 27d forming a flat portion formed along the periphery of the holes 27e and 27f. The cooking device 1 further includes a light-transmitting member 25 disposed on the cover 27 so as to face the pair of holes 5ca, 27e, and 27f and abut against a first flat portion 27c and a second flat portion 27d. The light-transmitting member 25 also includes a first light-emitting device 21a and a second light-emitting device 21b, which are disposed outside the cover 27 and comprise an optical device. The side wall 5c includes an outwardly raised curved portion 5cb around each of the pair of holes 5ca.

[0061] According to the structure of the above-mentioned heating cooker 1, the following effects can be obtained.

[0062] First, curved portions 5cb are formed around a pair of holes 5ca formed in the side wall 5c of the heating chamber 5. This prevents electromagnetic waves such as microwaves radiated into the heating chamber 5 from leaking out of the heating chamber 5 through the holes 5ca.

[0063] Furthermore, the light-transmitting member 25 is not in direct contact with the pair of holes 5ca formed in the side wall 5c of the heating chamber 5, but is arranged via the cover portion 27. Thus, even if the curved portion 5cb of the side wall 5c vibrates due to vibrations within the heating chamber 5, the curved portion 5cb does not damage the light-transmitting member 25.

[0064] Furthermore, the first flat portion 27c and the second flat portion 27d constituting the flat portion of the cover portion 27 are in close surface-to-surface contact with the light-transmitting member 25. Therefore, even if the flat portion and the light-transmitting member 25 move relative to each other due to vibration or the like, the surface of the light-transmitting member 25 is less likely to be damaged. Furthermore, since the light-transmitting member 25 is arranged in contact with the cover portion 27, the generated steam can be more reliably prevented from leaking out of the heating chamber 5 through the holes 5ca.

[0065] Furthermore, the cooking device 1 of the above-described embodiment includes a side metal plate 12c of the heat-insulating metal plate 12, which constitutes the first metal plate, and is disposed outside the light-transmitting member 25. The illuminator 21, which constitutes the optical device, is mounted on the side metal plate 12c. The side metal plate 12c provides a heat-insulating effect that prevents heat generated in the heating chamber 5 from being dissipated to the outside. This allows the ambient temperature of the illuminator 21 to be lower than the temperature within the heating chamber 5. Consequently, the effect of heat from within the heating chamber 5 on the illuminator 21 can be reduced.

[0066] Furthermore, the cooking device 1 of the above embodiment includes a heat-insulating metal plate 23, constituting a second metal plate, disposed between the illuminator 21 and the side metal plate 12c. The illuminator 21 is attached to the side metal plate 12c via the heat-insulating metal plate 23. In other words, the heat-insulating metal plate 23 is separate from the side metal plate 12c. This provides a high heat-insulating effect on the illuminator 21. Consequently, the effects of heat on the illuminator 21 can be further reduced.

[0067] Furthermore, the cooking device 1 of the above embodiment has a pair of holes 5ca in the side wall 5c, and the cover 27 has holes 27e and 27f, which correspond to the pair of holes 5ca and constitute the second hole, as well as a first flat portion 27c and a second flat portion 27d. The light-transmitting member 25 is positioned so as to oppose the pair of holes 5ca constituting the first hole and the pair of holes 27e and 27f constituting the second hole, and to abut against the pair of first flat portions 27c and the second flat portion 27d constituting the flat portion. Thus, a single light-transmitting member 25 is positioned relative to the pair of holes 27e and 27f in the cover 27. Therefore, the light-transmitting member 25 can be sized larger than the pair of holes 27e and 27f, making it easier to fit within the cover 27.

[0068] Furthermore, in the cooking device 1 of the above-described embodiment, the cover 27 includes a first stopper 27g and a protrusion 27h that constitute a front-to-back direction restricting portion, restricting movement of the light-transmitting member 25 in the front-to-back direction (Y direction); and a second stopper 27k and a third stopper 27m that constitute a height direction restricting portion, restricting movement of the light-transmitting member 25 in the height direction (Z direction). These structures allow the light-transmitting member 25 to be stably mounted in an appropriate position on the cover 27. Furthermore, positional displacement of the light-transmitting member 25 caused by vibrations and the like can be more reliably suppressed.

[0069] The present invention is not limited to the heating cooker of the above-mentioned embodiment, and may also have the structure of the heating cooker of the embodiment shown in the following modified examples.

[0070] That is, in the above embodiment, an optical device comprising an illuminator 21 having an LED element as a light-emitting element is used as an example, but the present invention is not limited to this. For example, an imaging element or a light-receiving element may be provided as the optical device. Furthermore, a combination of these elements may be provided as the optical device. Specifically, an imaging element may include a CMOS image sensor or a CCD image sensor. Furthermore, an infrared temperature sensor may be provided as the light-receiving element.

[0071] Furthermore, by appropriately combining any of the various embodiments and modifications described above, the effects possessed by each can be achieved.

[0072] While the present invention has been fully described in connection with preferred embodiments thereof with reference to the accompanying drawings, various modifications and variations will be apparent to those skilled in the art. Such modifications and variations are to be understood as encompassed within the scope of the present invention as defined by the appended claims. Furthermore, the combination and order of elements in the various embodiments may be varied without departing from the scope and spirit of the present invention.

[0073] As described above, one embodiment of the present invention is a cooking device having a heating chamber. The cooking device comprises: a side wall defining one side of the inner surface of the heating chamber; a first hole formed in the side wall; and a cover portion having a second hole arranged outside the first hole and opposite to the first hole, and a flat portion formed around the second hole. Furthermore, the cooking device comprises: a light-transmitting component arranged on the cover portion so as to be opposite to the first hole and the second hole and in contact with the flat portion; and an optical device arranged on the outside of the cover portion and configured to at least one of emit light into the heating chamber and receive light from the heating chamber through the first hole, the second hole, and the light-transmitting component. Furthermore, the side wall has a curved portion cut outward around the first hole.

[0074] Furthermore, a first metal plate may be provided on the outer side of the light-transmitting member, and the optical device may be mounted on the first metal plate.

[0075] Furthermore, a second metal plate may be provided between the optical device and the first metal plate, and the optical device may be attached to the first metal plate via the second metal plate.

[0076] The side wall has a pair of first holes, the cover has a pair of second holes and a pair of flat portions corresponding to the pair of first holes, and the light-transmitting member may be arranged to face the pair of first holes and the pair of second holes and to abut against the pair of flat portions.

[0077] Furthermore, the cover may include a front-rear direction regulating portion regulating movement of the light-transmitting member in the front-rear direction (Y direction) and a height direction regulating portion regulating movement of the light-transmitting member in the height direction (Z direction).

[0078] Alternatively, the optical device may be an illuminator.

[0079] In addition, the illuminator may also be an LED lighting device.

[0080] Industrial applicability

[0081] The present invention is useful in heating cookers such as a high-frequency heating cooker, a high-frequency heating cooker with a steam generator, and a high-frequency heating cooker with a heater.

Claims

1. A heating cooker comprising a heating chamber, wherein: The heating cooker has: a side wall defining one side of the inner surface of the heating chamber; a first hole formed in the side wall; a cover portion having a second hole disposed outside the first hole and facing the first hole, and a flat portion formed along a periphery of the second hole; a light-transmitting member disposed on the cover portion so as to face the first hole and the second hole and abut against the flat portion; and an optical device disposed outside the cover portion, The side wall has a curved portion cut outward around the first hole. The flat portion of the cover portion is in close contact with the light-transmitting member at a position outside a terminal end of the curved portion of the side wall.

2. The heating cooker according to claim 1, wherein The heating cooker includes a first metal plate arranged outside the light-transmitting member. The optical device is mounted on the first metal plate.

3. The heating cooker according to claim 2, wherein: The heating cooker includes a second metal plate disposed between the optical device and the first metal plate. The optical device is mounted on the first metal plate via the second metal plate.

4. The heating cooker according to claim 1, wherein The side wall has a pair of the first holes, The cover portion includes a pair of the second holes corresponding to the pair of the first holes and a pair of the flat portions. The light-transmitting member is disposed so as to face the pair of first holes and the pair of second holes and to abut against the pair of flat portions. The heating cooker according to claim 1, wherein The cover portion has: a front-to-back direction restricting portion for restricting movement of the light-transmitting member in the front-to-back direction, ie, the Y direction; and The height direction restriction portion restricts the movement of the light-transmitting member in the height direction, ie, the Z direction. The heating cooker according to claim 2, wherein: The optical device is an illuminator.

7. The heating cooker according to claim 6, wherein The illuminator is an LED lighting device.

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