rice cooker

Abstract

To provide a rice cooker that prevents an intake hole from being blocked with a rug or the like while securing the area of the intake hole in a constant degree.SOLUTION: In a rice cooker of the present invention, an air intake part 34 for taking an ambient air into a body 1 is formed in the bottom face part 12 of the body 1. The air intake part 34 is provided with a dome part 37 projecting in a dome shape in the lower side. In the dome part 37, there are formed a plurality of intake holes 45A, 45B, 45C, 45D, 45E, so that an area for forming the intake holes 45A-45E is secured in a constant degree. In addition, even if a rug or the like placed under the rice cooker is sucked to the dome part 37 side, the rug is abutted on an apex part 38 to make the intake holes 45A-45E hard to be blocked.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a rice cooker in which an intake section for taking in outside air into the main body is formed at the bottom of the main body. [Background technology]

[0002] A conventional rice cooker of this type is the rice cooker (S) described in Patent Document 1. The rice cooker (S) of Patent Document 1 comprises a container body (40) capable of accommodating an inner pot (50) therein, and a lid (20) that can open and close the top opening of the container body (40). A bottom member (44) constituting the container body (40) forms the bottom of the rice cooker (S), and an air intake hole (59) is opened in the bottom member (44).

[0003] The rice cooker (S) is also provided with a cooling fan (58) near the bottom of the container body (40), which introduces outside air through an air intake hole (59). The air intake hole (59) is covered with a cover member (65). An air intake opening (67) having a generally rectangular shape and elongated in the left-right direction is formed between the bottom member (44) and the cover member (65). A plurality of small openings (68) are formed in an arc-shaped region (65e) of the cover member (65). Outside air is introduced into the cover member (65) through the air intake opening (67) and the small openings (68). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-38401 Summary of the Invention [Problem to be solved by the invention]

[0005] On the other hand, in recent years, there has been an increase in demand for rice cookers that can cook at high output (high heat). In order to ensure cooling performance that can match high output, large cooling fans with greater cooling effect are sometimes used, but when using large cooling fans, there is a problem that the size of the rice cooker as a whole product increases in order to secure the opening area of ​​the intake holes for taking in air.

[0006] It is also necessary to prevent a rug or other item placed on the counter or table on which the rice cooker is placed from being sucked in by the suction force of the cooling fan and blocking the air intake holes.

[0007] Therefore, an object of the present invention is to provide a rice cooker that prevents the air intake holes from being blocked by a rug or the like while ensuring a certain area for the air intake holes. [Means for solving the problem]

[0008] In the rice cooker of the present invention, an intake section for taking in outside air into the main body is formed on the bottom surface of the main body, and the intake section has a dome-shaped protruding portion on the lower side, and the dome section has , the lowest part, the top; Multiple air intakes an outermost annular portion connected to the bottom surface portion; is formed The dome portion is gently curved from the apex to the outermost annular portion. It is characterized by the fact that

[0009] In addition, the rice cooker of the present invention is an intake section for taking in outside air into the main body is formed on the bottom surface of the main body, the intake section having a dome-shaped protruding portion on the lower side, and a plurality of intake holes formed in the dome portion; An exhaust section for discharging air from inside the main body to the outside is formed on the bottom surface, the exhaust section has a concave shape on the upper side, and the exhaust section is formed with a plurality of exhaust holes. It is characterized by do.

[0010] In the rice cooker of the present invention, the air intake hole may not be formed at the top, which is the lowest part of the dome portion.

[0011] In addition, in the rice cooker of the present invention, the main body may include legs that support the rice cooker, and the top may be located above the ground contact portions of the legs. [Effects of the Invention]

[0012] According to the rice cooker of the present invention, the necessary area of ​​the air intake hole can be secured, and the air intake hole can be prevented from being blocked by a rug or the like. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is an external perspective view of a rice cooker according to an embodiment of the present invention; [Figure 2] FIG. 2 is a perspective view showing an outer case of one embodiment of the present invention in a see-through state. [Figure 3] FIG. 2 is a perspective view of an outer case of the embodiment of the present invention in an upside-down state. [Figure 4] FIG. 2 is a plan view of an outer case according to an embodiment of the present invention. [Figure 5] FIG. 2 is a side view of an outer case according to an embodiment of the present invention. [Figure 6] 1 is a perspective view showing an intake section and its surrounding area in a state where an outer case according to an embodiment of the present invention is turned upside down. FIG. [Figure 7] 7 is a cross-sectional view taken along the line AA in FIG. 6. [Figure 8] 7 is a cross-sectional view of FIG. 6 taken along line B-B. DETAILED DESCRIPTION OF THE INVENTION

[0014] Preferred embodiments of the rice cooker of the present invention will be described below with reference to the accompanying drawings. The embodiments described below do not limit the content of the present invention as set forth in the claims. Furthermore, not all of the configurations described below are necessarily essential requirements of the present invention. In the following embodiments, the directions of the arrows (up, down, front, rear, left, right) shown in FIG. 1 will be described as the upper, lower, front, rear, left, and right sides of the rice cooker, respectively.

[0015] As shown in Fig. 1, the rice cooker of this embodiment is composed of a main body 1 that is stably placed on a placement location, and a lid 2 that can be opened and closed to cover the upper opening of the main body 1. The main body 1 detachably houses a pot (not shown) as an inner pot, and the pot can be removed when the lid 2 is opened.

[0016] The lid 2 has an operating unit 3, a display unit 4, and a steam vent 5 arranged on its top surface 2A. In this embodiment, the operating unit 3 is a so-called touch panel, which the user can touch to start or stop rice cooking and select various cooking courses, but push-buttons or other devices may also be used. The display 4 in this embodiment is a liquid crystal display (LCD) that displays various information related to rice cooking. The steam vent 5 is used to release steam generated by heating the food in the pot to the outside of the rice cooker. In addition, an exposed lid-opening button 6 is arranged on the top surface 2A of the lid 2, which is pressed to open the lid 2 from the main body 1. When the user presses the lid-opening button 6, the engagement between the main body 1 and the lid 2 is released, and the lid 2 automatically opens from the main body 1.

[0017] As shown in Figures 1 and 2, main body 1 has outer case 13, in which side wall portion 11 and bottom portion 12 (see Figure 3, etc.) are integrally formed, frame 14 attached to the top of outer case 13, and pot accommodating portion 15 formed in a recessed shape downward from the inner end of frame 14. In addition, a rear cover 16 is provided on the upper rear side of outer case 13 to cover a hinge mechanism (not shown) connecting main body 1 and lid 2, etc. An internal space S is formed inside main body 1, surrounded by outer case 13, frame 14, pot accommodating portion 15, and rear cover 16.

[0018] The pot is used to store food to be cooked, such as rice and water, and is placed and suspended on frame 14 of main body 1 and stored in pot storage section 15. A gap is formed between the pot and pot storage section 15, allowing the pot to be suspended from frame 14.

[0019] 3 to 5, outer case 13 has a bottom surface 12 and a side wall 11 extending from the entire periphery of bottom surface 12, and is open at the top. A portion of a rear plate 17 of side wall 11 is formed to be low in height so that a rear cover 16 can be disposed thereon.

[0020] An exhaust section 21 is formed on the front side of the bottom surface section 12, which releases air inside the main body 1 to the outside. The exhaust section 21 has a concave shape on the upper side, and multiple slits 22, which serve as exhaust holes, are formed in parallel. Air passes through these slits 22. By making the exhaust section 21 concave, the area in which the slits 22 are formed can be increased, and the required amount of exhaust can be secured. In this embodiment, the slits 22 are available in different lengths, and the length and width of the slits 22 can be selected taking into consideration the shape and durability of the exhaust section 21, the amount of exhaust that needs to be secured, and the like.

[0021] The exhaust section 21 has a front side surface portion 23 formed long in the left-right direction, a first left side surface portion 24A extending rearward from the left end of the front side surface portion 23, a left lateral surface portion 25A extending leftward from the rear end of the first left side surface portion 24A, a second left side surface portion 26A extending rearward from the left end of the left lateral surface portion 25A, a left rear lateral surface portion 27A extending rightward from the rear end of the second left side surface portion 26A, a first right side surface portion 24B extending rearward from the right end of the front side surface portion 23, a right lateral surface portion 25B extending rightward from the rear end of the first right side surface portion 24B, a second right side surface portion 26B extending rearward from the right end of the right lateral surface portion 25B, a right rear lateral surface portion 27B extending leftward from the rear end of the second right side surface portion 26B, and an arc-shaped rear surface portion 28 extending between the left rear lateral surface portion 27A and the right rear lateral surface portion 27B.

[0022] The front side surface portion 23, the first left side surface portion 24A, the first right side surface portion 24B, the left lateral surface portion 25A, the right lateral surface portion 25B, the second left side surface portion 26A, the second right side surface portion 26B, the left rear lateral surface portion 27A, and the right rear lateral surface portion 27B are formed in a substantially linear shape and are formed substantially perpendicular to the bottom surface portion 12. On the other hand, the arc-shaped rear surface portion 28 is formed in a substantially arc shape along the outer shape of the large circular bottom portion 29A (described later) and is formed to be inclined forward rather than perpendicular to the bottom surface portion 12. Therefore, the surface area is larger than when perpendicular to the bottom surface portion 12, and the area of ​​the slit 22 is also secured to be large.

[0023] The slits 22 are formed in all of the front side surface portion 23, first left side surface portion 24A, first right side surface portion 24B, left lateral surface portion 25A, right lateral surface portion 25B, second left side surface portion 26A, second right side surface portion 26B, left rear lateral surface portion 27A, right rear lateral surface portion 27B, and arcuate rear surface portion 28. In this way, the slits 22 are formed over a long range in the width direction (left-right direction) of the bottom surface portion 12, so that air within the internal space S can be widely released.

[0024] A circular bottom portion 29 is formed behind exhaust section 21, below pot accommodating section 15, and protrudes in a circular shape. Circular bottom portion 29 has a large circular bottom portion 29A with a larger diameter and a small circular bottom portion 29B with a diameter approximately half that of large circular bottom portion 29A. Small circular bottom portion 29B is located in the center of large circular bottom portion 29A. Small circular bottom portion 29B protrudes more than large circular bottom portion 29A. Small circular bottom portion 29B has eight semicircular drain holes 30 formed in small circular bottom portion 29B to drain water or the like that drips onto inner surface 12A of bottom portion 12 of outer case 13 to the outside of outer case 13. The number and shape of drain holes 30 can be changed as needed.

[0025] Two exhaust holes 31A and 31B are formed in parallel on the left side of the circular bottom 29, which release air from the internal space S to the outside. Exhaust holes 31A and 31B have a generally arc-shaped configuration that follows the outer shape of the large circular bottom 29A. Furthermore, two exhaust holes 32A and 32B are formed in parallel on the right side of the circular bottom 29, which release air from the internal space S to the outside. Exhaust holes 32A and 32B have a generally arc-shaped configuration that follows the outer shape of the large circular bottom 29A.

[0026] To the left of exhaust holes 31A, 31B, there is formed a handle 33A for use when lifting the rice cooker. To the right of exhaust holes 32A, 32B, there is formed a handle 33B for use when lifting the rice cooker. Handles 33A, 33B have a shape such that side wall 11 and bottom surface 12 are recessed inward. Handles 33A, 33B are long in the front-to-rear direction, making it easy to place the thumbs of both hands on them.

[0027] An intake section 34 is formed on the rear side of the bottom surface portion 12 to draw air from the outside into the main body 1. As shown in FIG. 4, a fan contact section 36 is formed on the inner surface portion 12A of the bottom surface portion 12 of the outer case 13. The fan contact section 36 is abutted against a cooling fan 35 (see FIGS. 2 and 6), which is a blower for drawing air through the intake section 34. The fan contact section 36 is erected upward from the inner surface portion 12A in a rectangular frame shape. In this embodiment, the area surrounded by the fan contact section 36 is the intake section 34. As shown in FIGS. 3 and 4, the intake section 34 is formed to the right of the center in the left-right direction and is close to the right rear leg 48B and the left shock absorbing leg 49B, which will be described later. The intake section 34 is also close to the rear center leg 50.

[0028] As shown primarily in FIG. 6 , the intake section 34 has a dome portion 37 that protrudes downward in a dome shape. The dome portion 37 has a disk-shaped top portion 38, a first annular portion 39 formed on the outside of the top portion 38, a second annular portion 40 formed on the outside of the first annular portion 39, a third annular portion 41 formed on the outside of the second annular portion 40, a fourth annular portion 42 formed on the outside of the third annular portion 41, and a fifth annular portion 43 formed on the outside of the fourth annular portion 42. Therefore, the dome portion 37 is formed in a circular shape in a plan view. Furthermore, as shown in FIGS. 7 and 8 , the dome portion 37 is gently curved from the top portion 38 to the fifth annular portion 43 in a vertical cross-sectional view, with no straight portions.

[0029] The top portion 38 and the first annular portion 39, the first annular portion 39 and the second annular portion 40, the second annular portion 40 and the third annular portion 41, the third annular portion 41 and the fourth annular portion 42, and the fourth annular portion 42 and the fifth annular portion 43 are connected by a plurality of connecting pieces 44A, 44B, 44C, 44D, and 44E, respectively.

[0030] The top portion 38 and the first annular portion 39 are connected at four locations by connecting pieces 44A. The connecting pieces 44A are arranged at approximately equal intervals (approximately 90° intervals) on the front, rear, left, and right sides of the top portion 38.

[0031] The first annular portion 39 and the second annular portion 40 are connected at eight locations by connecting pieces 44B. Four connecting pieces 44B are arranged at positions (front, rear, left, and right) that extend away from the top 38 of the connecting piece 44B that connects the top 38 and the first annular portion 39, and four connecting pieces 44B are arranged at approximately equal intervals (approximately 45° intervals) between them.

[0032] The second annular portion 40 and the third annular portion 41 are connected at ten locations by connecting pieces 44C. Two connecting pieces 44C are disposed at positions extending away from the top 38 to the left and right of the connecting piece 44C connecting the top 38 and the first annular portion 39, and four connecting pieces 44C are disposed in front of the two connecting pieces 44C and four connecting pieces 44C are disposed at approximately equal intervals (approximately 36° intervals) behind the two connecting pieces 44C.

[0033] The third annular portion 41 and the fourth annular portion 42 are connected at 14 locations by connecting pieces 44D. The connecting pieces 44D are all arranged at approximately equal intervals (approximately 25.7° intervals). Furthermore, the connecting pieces 44D do not extend perpendicular to the third annular portion 41 and the fourth annular portion 42. In other words, when the outer case 13 is viewed from below, the fourth annular portion 42 is positioned counterclockwise around the top 38.

[0034] The fourth annular portion 42 and the fifth annular portion 43 are connected at 16 locations by connecting pieces 44E. The connecting pieces 44E are all disposed at equal intervals (approximately 22.5° intervals). Furthermore, the connecting pieces 44E do not extend perpendicular to the fourth annular portion 42 and the fifth annular portion 43. In other words, when the outer case 13 is viewed from below, the fifth annular portion 43 is positioned counterclockwise around the top 38.

[0035] 4, in a plan view, connecting pieces 44A, 44B, and 44C extend radially from the center of top portion 38. On the other hand, connecting pieces 44D and 44E extend in a different direction from connecting pieces 44A, 44B, and 44C. This is to allow air to be efficiently drawn in by cooling fan 35, which rotates counterclockwise when viewed from below.

[0036] Four air intake holes 45A are formed between the top 38 and the first annular portion 39, eight air intake holes 45B are formed between the first annular portion 39 and the second annular portion 40, ten air intake holes 45B are formed between the second annular portion 40 and the third annular portion 41, fourteen air intake holes 45B are formed between the third annular portion 41 and the fourth annular portion 42, and sixteen air intake holes 45B are formed between the fourth annular portion 42 and the fifth annular portion 43.

[0037] The fifth annular portion 43 is connected to the bottom surface 12 of the outer case 13 at its front, rear, left, and right sides. An air intake hole 45F, which is a long hole, and an air intake hole 45G, which is a short hole, are formed on the front left side of the dome portion 37. An air intake hole 45H, which is a long hole, and an air intake hole 45I, which is a short hole, are formed on the front right side of the dome portion 37. An air intake hole 45J, which is a long hole, and an air intake hole 45K, which is a short hole, are formed on the rear left side of the dome portion 37. An air intake hole 45L, which is a long hole, and an air intake hole 45M, which is a short hole, are formed on the rear right side of the dome portion 37. The air intake holes 45F, 45G, 45H, 45I, 45J, 45K, 45L, and 45M are formed at the four corners of the air intake portion 34 and have a generally arc shape corresponding to the shape of the dome portion 37. The length of the intake holes 45G, 45I, 45K, and 45M is about half the length of the intake holes 45F, 45H, 45J, and 45L.

[0038] A partition wall 46 extending in the left-right direction is erected downward on the outer surface 12B of the bottom surface portion 12 between the circular bottom 29 and the intake section 34. This partition wall 46 cools the inside of the main body 1, causing the temperature to rise, and prevents the air discharged from the exhaust section 21 from being taken directly into the main body 1 through the intake section 34. In other words, it restricts the air discharged from the exhaust section 21 from flowing linearly toward the intake section 34.

[0039] Seven legs supporting the rice cooker, namely, left front leg 47A, right front leg 47B, left rear leg 48A, right rear leg 48B, left shock absorbing leg 49A, right shock absorbing leg 49B, and rear center leg 50, protrude downward from bottom surface 12B of bottom surface 12. Left front leg 47A is disposed to the left of first left side surface 24A and in front of left lateral surface 25A, and right front leg 47B is disposed to the right of first right side surface 24B and in front of right lateral surface 25B. Left rear leg 48A is disposed to the left of intake 34, and right rear leg 48B is disposed to the right of intake 34. Left shock absorbing leg 49A is disposed behind left rear leg 48A, and right shock absorbing leg 49B is disposed behind right rear leg 48B.

[0040] The left front leg 47A, the right front leg 47B, the left hind leg 48A, and the right hind leg 48B are each roughly frustoconical in shape, with flat ground contact portions 51A, 51B, 52A, and 52B formed at their lowest ends to abut against the placement location where the rice cooker is placed. Furthermore, drainage holes 53A, 53B, 54A, and 54B are formed in the left front leg 47A, the right front leg 47B, the left hind leg 48A, and the right hind leg 48B to drain water or the like that accumulates in the left front leg 47A, the right front leg 47B, the left hind leg 48A, and the right hind leg 48B.

[0041] The left shock absorbing leg 49A and the right shock absorbing leg 49B have a generally cylindrical shape and have openings 55A and 55B on their lower sides. Shock absorbers (not shown) made of an elastic material such as rubber are disposed inside the left shock absorbing leg 49A and the right shock absorbing leg 49B, with parts of the shock absorbers protruding from the openings 55A and 55B. The shock absorbers are intended to absorb the shock when the lid 2 is opened and to prevent the rice cooker from moving due to the reaction caused by the movement of the lid 2.

[0042] The rear central leg 50 stands downward from the rear of the outer case 13. The rear central leg 50 is formed in a plate shape, and a ground contact portion 50A, which is the lowest end portion of the rear central leg 50, has a substantially U-shape.

[0043] As shown in FIG. 6 , when the placement surface is flat, the contact portions 51A, 51B, 52A, and 52B, the lowermost portions of the shock absorbers, and the contact portion 50A of the rear center leg 50 abut against the placement surface when the rice cooker is placed on it, stably supporting the rice cooker so that it does not tilt. Furthermore, when the rice cooker is placed on it, the top 38 of the air intake portion 34 does not abut against the placement surface. In other words, the protrusion amount of the air intake portion 34 is smaller than the protrusion amounts of the left front leg 47A, the right front leg 47B, the left rear leg 48A, the right rear leg 48B, the left shock absorbing leg 49A, the right shock absorbing leg 49B, and the rear center leg 50. In this embodiment, the distance between the top 38 and the placement surface is approximately 1 mm, but this distance can be adjusted as needed.

[0044] An outlet hole 57 for leading out a power supply cord 56 from inside the main body 1 is formed on the left side of the left rear leg 48A.

[0045] A heating coil (not shown) is disposed on the outer surface of pot accommodating section 3 shown in Figure 2 as a heating means for heating the rice cooker by electromagnetic induction. High-frequency current is passed through this heating coil to heat the food inside the rice cooker. A unitized board unit 61 including a heating control means for controlling the heating means, such as the heating coil, is disposed within internal space S and behind pot accommodating section 3.

[0046] The substrate unit 61 is mainly composed of a substrate main body 62 , a protector 63 for electrically insulating and protecting the substrate main body 62 , and a heat sink 64 attached to the substrate main body 62 .

[0047] The substrate body 62 is a printed circuit board in which a conductive pattern made of copper or the like is formed on the surface of a flat insulating base material, and various electronic components 65 are mounted and fixed thereon.

[0048] The protector 63 is made of a resin member and is attached to the frame 14 while holding the substrate main body 62. In other words, the protector 63 suspends the substrate main body 62 from the frame 14. Therefore, the internal space S is partially partitioned into front and rear spaces by the substrate main body 62 and the protector 63.

[0049] The heat sink 64 is made of a metal material with good thermal conductivity, such as aluminum, and has a plurality of fins 66 extending in the up-down direction (vertical direction) and arranged in parallel in the front-rear direction to maximize its surface area. The heat sink 64 is thermally connected to the electronic component 65, and receives and dissipates heat from the electronic component 65.

[0050] A cooling fan 35 is disposed adjacent to the lower side of the heat sink 64. Therefore, by driving the cooling fan 35, external air is drawn into the internal space S through the intake section 34 and blown onto the heat sink 64. The external air removes heat from the heat sink 64, thereby cooling the electronic components 65. The air from the cooling fan 35 is blown onto the heat sink 64 mainly from below. The fins 66 of the heat sink 64 extend in the up-down direction (vertical direction) and are arranged in parallel in the front-to-back direction, so that air flows between adjacent fins 66 and efficiently contacts the entire fins 66. The air drawn in through the intake section 34 flows within the internal space S as indicated by the white arrow Y in FIG. 2 and is discharged to the outside of the internal space S through the exhaust section 21. Therefore, the flowing air also directly contacts the board unit 61 including the electronic components 65, thereby providing a cooling effect.

[0051] As described above, in the rice cooker of this embodiment, the intake section 34 that draws outside air into the main body 1 is formed on the bottom surface 12 of the main body 1. The intake section 34 has a dome-shaped protruding dome portion 37 on the downward side, and multiple intake holes 45A-45E are formed in the dome portion 37. This allows for a larger surface area than if the intake section 34 were formed flat and not protruding downward. This also allows for a larger opening area of ​​the intake holes 45A-45E, improving the intake capacity. Furthermore, because the intake section 34 is dome-shaped, even if a mat is placed on the surface where the rice cooker is placed and the mat is sucked toward the dome portion 37 by the cooling fan 35, the mat abuts against the top portion 38 in a point-like manner, making it less likely that the mat will block the intake holes 45A-45E.

[0052] Furthermore, in the rice cooker of this embodiment, an exhaust section 21 that releases air from inside the main body 1 to the outside is formed on the bottom surface 12. The exhaust section 21 has a concave shape on the upper side, and multiple slits 22 are formed in the exhaust section 21. This allows for a larger surface area to be secured compared to when the exhaust section 21 does not have a concave shape on the upper side and is formed flat. This also allows for a larger opening area of ​​the slits 22, improving the exhaust capacity.

[0053] Furthermore, in the rice cooker of this embodiment, no air intake holes 45A-45E are formed in top portion 38, which is the lowest part of dome portion 37. Therefore, if a mat is placed where the rice cooker is placed, even if the mat is sucked toward dome portion 37 by cooling fan 35, top portion 38 will come into point contact with the mat, preventing it from floating up any further.

[0054] Furthermore, in the rice cooker of this embodiment, the main body 1 includes left front leg 47A, right front leg 47B, left rear leg 48A, right rear leg 48B, left shock absorbing leg 49A, right shock absorbing leg 49B, and rear central leg 50 that support the rice cooker, and the top 38 is located higher than the ground contact portions 50A, 51A, 51B, 52A, and 52B of the left front leg 47A, right front leg 47B, left rear leg 48A, right rear leg 48B, left shock absorbing leg 49A, right shock absorbing leg 49B, and rear central leg 50. Therefore, if a mat is placed where the rice cooker is to be placed, the mat will not block the intake portion 34 even if the rice cooker is placed on the mat. In addition, the mat is held down by the left front leg 47A, right front leg 47B, left rear leg 48A, right rear leg 48B, left shock absorbing leg 49A, right shock absorbing leg 49B, and rear center leg 50 that support the rice cooker, so the mat is less likely to lift up even when the cooling fan 35 is driven.

[0055] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the present invention. For example, parts that do not significantly affect the flow of air taken into the main body 1 through the intake section 34 and released to the outside through the exhaust section 21, such as the shape of the lid 2, may be of other shapes. [Explanation of symbols]

[0056] 1 Main unit 12 Bottom part 21 Exhaust section 22 Slit (exhaust hole) 34 Intake section 37 Dome section 38 Top 39 First Circular Section (Circular Section) 40 Second annular section (annular section) 41 Third annular section (annular section) 42 Fourth Circular Ring (Circular Ring) 43 5th annular part (annular part, outermost annular part) 44A Connection piece 44B Connection piece 44C Connector 44D Connecting piece 44E Connection piece 45A Intake hole 45B Intake hole 45C Intake hole 45D Intake hole 45E Intake hole 47A Left front leg (leg) 47B Right front leg (leg) 48A Left rear leg (leg) 48B Right rear leg (leg) 49A Left shock absorbing leg (leg) 49B Right shock absorbing leg (leg) 50 Rear central leg (leg) 50A grounding part 51A Grounding part 51B Grounding part 52A Grounding part 52B Grounding part

Claims

1. An intake section for taking in outside air into the main body is formed on the bottom surface of the main body, The intake section has a dome-shaped protruding portion on the lower side, The dome portion has a top portion which is the lowest portion, a plurality of air intake holes, and an outermost annular portion which is connected to the bottom surface portion, The rice cooker is characterized in that the dome portion is gently curved from the apex to the outermost circular ring portion.

2. An intake section that takes in outside air into the main body is formed on the bottom surface of the main body, The intake section has a dome-shaped protruding portion on the lower side, A plurality of intake holes are formed in the dome portion, an exhaust portion for releasing air from inside the main body to the outside is formed on the bottom surface portion; The exhaust portion has a concave shape on the upper side, The rice cooker is characterized in that a plurality of exhaust holes are formed in the exhaust section.

3. 2. The rice cooker according to claim 1, wherein the top portion is not provided with the air intake holes.

4. The main body includes legs that support the rice cooker, The rice cooker according to claim 3, wherein the top is located above the ground contact portion of the leg.

5. The dome portion has a plurality of annular portions of different sizes, the annular portion includes the outermost annular portion, Adjacent annular portions are connected by connecting pieces, 5. The rice cooker according to claim 1, wherein a part of the connecting piece does not extend in a direction perpendicular to the annular portion.

6. The plurality of annular portions are arranged outside the top portion, the top and the annular portion are connected by the connecting piece, The rice cooker described in claim 5, characterized in that the connecting piece on the top side extends perpendicular to the annular portion, and the connecting piece on the outermost annular portion side does not extend perpendicular to the annular portion, and the direction in which the connecting pieces extend changes midway.

Images